Initial import

48 files changed, 12232 insertions, 0 deletions

diff --git a/src/.svn/all-wcprops b/src/.svn/all-wcprops
new file mode 100644
index 0000000..7bf56a4
--- /dev/null
+++ b/src/.svn/all-wcprops
@@ -0,0 +1,137 @@
+K 25
+svn:wc:ra_dav:version-url
+V 40
+/svnroot/libcaldav/!svn/ver/42/trunk/src
+END
+delete-caldav-object.c
+K 25
+svn:wc:ra_dav:version-url
+V 63
+/svnroot/libcaldav/!svn/ver/41/trunk/src/delete-caldav-object.c
+END
+caldav.h
+K 25
+svn:wc:ra_dav:version-url
+V 49
+/svnroot/libcaldav/!svn/ver/39/trunk/src/caldav.h
+END
+get-display-name.c
+K 25
+svn:wc:ra_dav:version-url
+V 59
+/svnroot/libcaldav/!svn/ver/41/trunk/src/get-display-name.c
+END
+Makefile.in
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/libcaldav/!svn/ver/42/trunk/src/Makefile.in
+END
+delete-caldav-object.h
+K 25
+svn:wc:ra_dav:version-url
+V 62
+/svnroot/libcaldav/!svn/ver/1/trunk/src/delete-caldav-object.h
+END
+get-display-name.h
+K 25
+svn:wc:ra_dav:version-url
+V 58
+/svnroot/libcaldav/!svn/ver/1/trunk/src/get-display-name.h
+END
+get-caldav-report.c
+K 25
+svn:wc:ra_dav:version-url
+V 60
+/svnroot/libcaldav/!svn/ver/41/trunk/src/get-caldav-report.c
+END
+modify-caldav-object.c
+K 25
+svn:wc:ra_dav:version-url
+V 63
+/svnroot/libcaldav/!svn/ver/41/trunk/src/modify-caldav-object.c
+END
+lock-caldav-object.c
+K 25
+svn:wc:ra_dav:version-url
+V 61
+/svnroot/libcaldav/!svn/ver/41/trunk/src/lock-caldav-object.c
+END
+add-caldav-object.c
+K 25
+svn:wc:ra_dav:version-url
+V 60
+/svnroot/libcaldav/!svn/ver/41/trunk/src/add-caldav-object.c
+END
+get-caldav-report.h
+K 25
+svn:wc:ra_dav:version-url
+V 60
+/svnroot/libcaldav/!svn/ver/39/trunk/src/get-caldav-report.h
+END
+md5.c
+K 25
+svn:wc:ra_dav:version-url
+V 45
+/svnroot/libcaldav/!svn/ver/1/trunk/src/md5.c
+END
+options-caldav-server.c
+K 25
+svn:wc:ra_dav:version-url
+V 64
+/svnroot/libcaldav/!svn/ver/41/trunk/src/options-caldav-server.c
+END
+caldav-utils.c
+K 25
+svn:wc:ra_dav:version-url
+V 55
+/svnroot/libcaldav/!svn/ver/42/trunk/src/caldav-utils.c
+END
+Makefile.am
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/libcaldav/!svn/ver/39/trunk/src/Makefile.am
+END
+modify-caldav-object.h
+K 25
+svn:wc:ra_dav:version-url
+V 62
+/svnroot/libcaldav/!svn/ver/1/trunk/src/modify-caldav-object.h
+END
+lock-caldav-object.h
+K 25
+svn:wc:ra_dav:version-url
+V 60
+/svnroot/libcaldav/!svn/ver/9/trunk/src/lock-caldav-object.h
+END
+add-caldav-object.h
+K 25
+svn:wc:ra_dav:version-url
+V 59
+/svnroot/libcaldav/!svn/ver/1/trunk/src/add-caldav-object.h
+END
+caldav.c
+K 25
+svn:wc:ra_dav:version-url
+V 49
+/svnroot/libcaldav/!svn/ver/39/trunk/src/caldav.c
+END
+md5.h
+K 25
+svn:wc:ra_dav:version-url
+V 45
+/svnroot/libcaldav/!svn/ver/1/trunk/src/md5.h
+END
+options-caldav-server.h
+K 25
+svn:wc:ra_dav:version-url
+V 64
+/svnroot/libcaldav/!svn/ver/10/trunk/src/options-caldav-server.h
+END
+caldav-utils.h
+K 25
+svn:wc:ra_dav:version-url
+V 55
+/svnroot/libcaldav/!svn/ver/34/trunk/src/caldav-utils.h
+END
diff --git a/src/.svn/entries b/src/.svn/entries
new file mode 100644
index 0000000..ac8f411
--- /dev/null
+++ b/src/.svn/entries
@@ -0,0 +1,776 @@
+10
+
+dir
+42
+https://libcaldav.svn.sourceforge.net/svnroot/libcaldav/trunk/src
+https://libcaldav.svn.sourceforge.net/svnroot/libcaldav
+
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diff --git a/src/.svn/text-base/Makefile.am.svn-base b/src/.svn/text-base/Makefile.am.svn-base
new file mode 100644
index 0000000..59d3126
--- /dev/null
+++ b/src/.svn/text-base/Makefile.am.svn-base
@@ -0,0 +1,53 @@
+AUTOMAKE_OPTIONS = gnu
+
+INCLUDES = @CURL_CFLAGS@ @GLIB_CFLAGS@ \
+		   -I$(top_srcdir) -I$(top_builddir)
+
+if STATIC_LINK
+noinst_LTLIBRARIES = libcaldav.la
+endif
+
+if DYNAMIC_LINK
+lib_LTLIBRARIES = libcaldav.la
+endif
+
+libcaldav_la_LDFLAGS = -version-info @LIBVERSION@
+
+libcaldav_la_SOURCES = \
+			caldav.h \
+			caldav.c \
+			add-caldav-object.c \
+			add-caldav-object.h \
+			delete-caldav-object.c \
+			delete-caldav-object.h \
+			modify-caldav-object.c \
+			modify-caldav-object.h \
+			get-caldav-report.c \
+			get-caldav-report.h \
+			get-display-name.c \
+			get-display-name.h \
+			caldav-utils.c \
+			caldav-utils.h \
+			md5.c \
+			md5.h \
+			options-caldav-server.c \
+			options-caldav-server.h \
+			lock-caldav-object.c \
+			lock-caldav-object.h \
+			get-freebusy-report.c \
+			get-freebusy-report.h
+
+libcaldav_includedir=$(includedir)/libcaldav-@VERSION@
+libcaldav_include_HEADERS = caldav.h
+
+noinst_HEADERS = \
+			add-caldav-object.h \
+			delete-caldav-object.h \
+			modify-caldav-object.h \
+			get-caldav-report.h \
+			caldav-utils.h
+
+libcaldav_la_LIBADD = \
+			@CURL_LIBS@ \
+			@GLIB_LIBS@
+
diff --git a/src/.svn/text-base/Makefile.in.svn-base b/src/.svn/text-base/Makefile.in.svn-base
new file mode 100644
index 0000000..5803fc2
--- /dev/null
+++ b/src/.svn/text-base/Makefile.in.svn-base
@@ -0,0 +1,649 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
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+pkgdatadir = $(datadir)/@PACKAGE@
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+NORMAL_INSTALL = :
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+NORMAL_UNINSTALL = :
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+build_triplet = @build@
+host_triplet = @host@
+target_triplet = @target@
+subdir = src
+DIST_COMMON = $(libcaldav_include_HEADERS) $(noinst_HEADERS) \
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+am__aclocal_m4_deps = $(top_srcdir)/m4/ax_prog_doxygen.m4 \
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+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
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+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
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+am__installdirs = "$(DESTDIR)$(libdir)" \
+	"$(DESTDIR)$(libcaldav_includedir)"
+LTLIBRARIES = $(lib_LTLIBRARIES) $(noinst_LTLIBRARIES)
+libcaldav_la_DEPENDENCIES =
+am_libcaldav_la_OBJECTS = caldav.lo add-caldav-object.lo \
+	delete-caldav-object.lo modify-caldav-object.lo \
+	get-caldav-report.lo get-display-name.lo caldav-utils.lo \
+	md5.lo options-caldav-server.lo lock-caldav-object.lo \
+	get-freebusy-report.lo
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+	$(libcaldav_la_LDFLAGS) $(LDFLAGS) -o $@
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+			caldav.c \
+			add-caldav-object.c \
+			add-caldav-object.h \
+			delete-caldav-object.c \
+			delete-caldav-object.h \
+			modify-caldav-object.c \
+			modify-caldav-object.h \
+			get-caldav-report.c \
+			get-caldav-report.h \
+			get-display-name.c \
+			get-display-name.h \
+			caldav-utils.c \
+			caldav-utils.h \
+			md5.c \
+			md5.h \
+			options-caldav-server.c \
+			options-caldav-server.h \
+			lock-caldav-object.c \
+			lock-caldav-object.h \
+			get-freebusy-report.c \
+			get-freebusy-report.h
+
+libcaldav_includedir = $(includedir)/libcaldav-@VERSION@
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+			delete-caldav-object.h \
+			modify-caldav-object.h \
+			get-caldav-report.h \
+			caldav-utils.h
+
+libcaldav_la_LIBADD = \
+			@CURL_LIBS@ \
+			@GLIB_LIBS@
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu src/Makefile
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+	  *config.status*) \
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+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
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+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
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+
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+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+
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+	@list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
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+clean-libtool:
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+install-libcaldav_includeHEADERS: $(libcaldav_include_HEADERS)
+	@$(NORMAL_INSTALL)
+	test -z "$(libcaldav_includedir)" || $(MKDIR_P) "$(DESTDIR)$(libcaldav_includedir)"
+	@list='$(libcaldav_include_HEADERS)'; test -n "$(libcaldav_includedir)" || list=; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(libcaldav_includedir)'"; \
+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(libcaldav_includedir)" || exit $$?; \
+	done
+
+uninstall-libcaldav_includeHEADERS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(libcaldav_include_HEADERS)'; test -n "$(libcaldav_includedir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	test -n "$$files" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(libcaldav_includedir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(libcaldav_includedir)" && rm -f $$files
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+		$(TAGS_FILES) $(LISP)
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+	  && gtags -i $(GTAGS_ARGS) "$$here"
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+
+distdir: $(DISTFILES)
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+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+	done
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+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES \
+	uninstall-libcaldav_includeHEADERS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libLTLIBRARIES clean-libtool clean-noinstLTLIBRARIES \
+	ctags distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-libLTLIBRARIES \
+	install-libcaldav_includeHEADERS install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags uninstall uninstall-am uninstall-libLTLIBRARIES \
+	uninstall-libcaldav_includeHEADERS
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/.svn/text-base/add-caldav-object.c.svn-base b/src/.svn/text-base/add-caldav-object.c.svn-base
new file mode 100644
index 0000000..544c069
--- /dev/null
+++ b/src/.svn/text-base/add-caldav-object.c.svn-base
@@ -0,0 +1,131 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "add-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * Function for adding a new event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_add(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* url;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: text/calendar; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "If-None-Match: *");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* tmp = random_file_name(settings->file);
+	gchar* s = rebuild_url(settings, NULL);
+	if (g_str_has_suffix(s, "/")) {
+		url = g_strdup_printf("%slibcaldav-%s.ics", s, tmp);
+	}
+	else {
+		url = g_strdup_printf("%s/libcaldav-%s.ics", s, tmp);
+	}
+	g_free(s);
+	g_free(tmp);
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	tmp = g_strdup(settings->file);
+	g_free(settings->file);
+	settings->file = verify_uid(tmp);
+	g_free(tmp);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, settings->file);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(settings->file));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 201) {
+			error->str = g_strdup(chunk.memory);
+			error->code = code;
+			result = TRUE;
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/.svn/text-base/add-caldav-object.h.svn-base b/src/.svn/text-base/add-caldav-object.h.svn-base
new file mode 100644
index 0000000..0756e74
--- /dev/null
+++ b/src/.svn/text-base/add-caldav-object.h.svn-base
@@ -0,0 +1,35 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __ADD_CALDAV_OBJECT_H__
+#define __ADD_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for adding a new event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_add(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/.svn/text-base/caldav-utils.c.svn-base b/src/.svn/text-base/caldav-utils.c.svn-base
new file mode 100644
index 0000000..50ce7ae
--- /dev/null
+++ b/src/.svn/text-base/caldav-utils.c.svn-base
@@ -0,0 +1,713 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "caldav-utils.h"
+#include "md5.h"
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <curl/curl.h>
+#include <ctype.h>
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param text
+ * @param stream
+ * @param ptr
+ * @param size
+ * @param nohex
+ */
+void dump(const char* text, FILE* stream, char* ptr, size_t size, char nohex) {
+	size_t i;
+	size_t c;
+
+	unsigned int width=0x10;
+
+	if(nohex)
+		/* without the hex output, we can fit more on screen */
+		width = 0x40;
+	fprintf(stream, "%s, %zd bytes (0x%zx)\n", text, size, size);
+	for(i=0; i<size; i+= width) {
+		fprintf(stream, "%04zx: ", i);
+		if(!nohex) {
+			/* hex not disabled, show it */
+			for(c = 0; c < width; c++) {
+				if(i+c < size)
+					fprintf(stream, "%02x ", ptr[i+c]);
+				else
+					fputs("   ", stream);
+			}
+		}
+		for(c = 0; (c < width) && (i+c < size); c++) {
+		/* check for 0D0A; if found, skip past and start a new line of output */
+			if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
+				i+=(c+2-width);
+				break;
+			}
+			fprintf(stream, "%c",(ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
+			/* check again for 0D0A, to avoid an extra \n if it's at width */
+			if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
+				i+=(c+3-width);
+				break;
+			}
+		}
+		fputc('\n', stream); /* newline */
+	}
+	fflush(stream);
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param handle
+ * @param type
+ * @param data
+ * @param size
+ * @param userp
+ * @return
+ */
+int my_trace(CURL* handle, curl_infotype type, char* data, size_t size, void* userp) {
+	struct config_data* config = (struct config_data *)userp;
+	const char* text;
+	(void)handle; /* prevent compiler warning */
+
+	switch (type) {
+		case CURLINFO_TEXT:
+			fprintf(stderr, "== Info: %s", data);
+		default: /* in case a new one is introduced to shock us */
+			return 0;
+		case CURLINFO_HEADER_OUT:
+			text = "=> Send header";
+			break;
+		case CURLINFO_DATA_OUT:
+			text = "=> Send data";
+			break;
+		case CURLINFO_SSL_DATA_OUT:
+			text = "=> Send SSL data";
+			break;
+		case CURLINFO_HEADER_IN:
+			text = "<= Recv header";
+			break;
+		case CURLINFO_DATA_IN:
+			text = "<= Recv data";
+			break;
+		case CURLINFO_SSL_DATA_IN:
+			text = "<= Recv SSL data";
+			break;
+	}
+	dump(text, stderr, data, size, config->trace_ascii);
+	return 0;
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @return void* to memory region
+ */
+static void* myrealloc(void* ptr, size_t size) {
+/* There might be a realloc() out there that doesn't like reallocing
+ * NULL pointers, so we take care of it here
+ * */
+	if(ptr)
+		return realloc(ptr, size);
+	else
+		return malloc(size);
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data) {
+	size_t realsize = size * nmemb;
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+	mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);
+	
+	if (mem->memory) {
+		memcpy(&(mem->memory[mem->size]), ptr, realsize);
+		mem->size += realsize;
+		mem->memory[mem->size] = 0;
+	}
+	return realsize;
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteHeaderCallback(void* ptr, size_t size, size_t nmemb, void* data) {
+	size_t realsize = size * nmemb;
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+	mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);
+	
+	if (mem->memory) {
+		memcpy(&(mem->memory[mem->size]), ptr, realsize);
+		mem->size += realsize;
+		mem->memory[mem->size] = 0;
+	}
+	return realsize;
+}
+
+/*
+size_t ReadMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data){
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+
+	memcpy(ptr, mem->memory, mem->size);
+	return mem->size;
+}
+*/
+
+/**
+ * Initialize caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void init_caldav_settings(caldav_settings* settings) {
+	settings->username = NULL;
+	settings->password = NULL;
+	settings->url = NULL;
+	settings->file = NULL;
+	settings->usehttps = FALSE;
+	settings->custom_cacert = NULL;
+	settings->verify_ssl_certificate = TRUE;
+	settings->debug = FALSE;
+	settings->trace_ascii = TRUE;
+	settings->ACTION = UNKNOWN;
+	settings->start = 0;
+	settings->end = 0;
+}
+
+/**
+ * Free memory assigned to caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void free_caldav_settings(caldav_settings* settings) {
+	if (settings->username) {
+		g_free(settings->username);
+		settings->username = NULL;
+	}
+	if (settings->password) {
+		g_free(settings->password);
+		settings->password = NULL;
+	}
+	if (settings->url) {
+		g_free(settings->url);
+		settings->url = NULL;
+	}
+	if (settings->file) {
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	if (settings->custom_cacert) {
+		g_free(settings->custom_cacert);
+		settings->custom_cacert = NULL;
+	}
+	settings->verify_ssl_certificate = TRUE;
+	settings->usehttps = FALSE;
+	settings->debug = FALSE;
+	settings->trace_ascii = TRUE;
+	settings->ACTION = UNKNOWN;
+	settings->start = 0;
+	settings->end = 0;
+}
+
+static gchar* place_after_hostname(const gchar* start, const gchar* stop) {
+	gchar* newpos = NULL;
+	gchar* pos = (gchar *) stop;
+	gboolean digit = TRUE;
+	
+	if (pos && stop && strcmp(start, pos) != 0) {
+		while (*pos != ':' && strcmp(start, pos) != 0)
+			--pos;
+		if (pos > start) {
+			gchar* tmp = (gchar *) pos + 1;
+			/* is pos++ a port number */
+			while (*tmp != '/' && digit) {
+				if (isdigit(*tmp) != 0) {
+					digit = TRUE;
+					tmp++;
+				}
+				else
+					digit = FALSE;
+			}
+			if (digit) {
+				/* pos was a port number */
+				while (*pos != '@' && strcmp(start, pos) != 0)
+					--pos;
+				if (strcmp(start, pos) != 0)
+					newpos = pos;
+			}
+			else {
+				while (*pos != '@' && pos != stop)
+					pos++;
+				if (pos != stop)
+					newpos = pos;
+			}
+		}
+		else {
+			/* is a username present */
+			gchar* tmp = NULL;
+			while (*pos != '/' && pos != stop) {
+				if (*pos == '@')
+					tmp = pos;
+				pos++;
+			}
+			if (tmp && pos != stop)
+				newpos = tmp;
+		}
+	}
+	return newpos;
+}
+
+/**
+ * Parse URL
+ * @param settings @see caldav_settings
+ * @param url String containing URL to collection
+ */
+void parse_url(caldav_settings* settings, const char* url) {
+	char* start;
+	char* pos;
+	char* end;
+	char* login;
+
+	login = pos = end = start = NULL;
+	if (!url)
+		return;
+	if ((pos = strstr(url, "//")) != NULL) {
+		/* Does the URL use https ?*/
+		if (!g_ascii_strncasecmp(url,"https",5) && settings->usehttps == FALSE) {
+				settings->usehttps=TRUE;
+		}
+		start = g_strdup(&(*(pos + 2)));
+		if ((pos = place_after_hostname(start, strrchr(start, '\0') - 1)) != NULL) {
+			/* username and/or password present */
+			login = g_strndup(start, pos - start);
+			end = pos;
+			if ((pos = strrchr(login, ':')) != NULL) {
+				/* both username and password is present */
+				settings->username = g_strndup(login, pos - login);
+				settings->password = g_strdup(++pos);
+			}
+			else {
+				/* only username present */
+				settings->username = g_strdup(login);
+				settings->password = NULL;
+			}
+			g_free(login);
+			settings->url = g_strdup(++end);
+		}
+		else {
+			/* no username or password present */
+			settings->url = g_strdup(start);
+			settings->username = NULL;
+			settings->password = NULL;
+		}
+		g_free(start);
+	}
+}
+
+/**
+ * Find a specific HTTP header from last request
+ * @param header HTTP header to search for
+ * @param headers String of HTTP headers from last request
+ * @param lowcase Should string be returned in all lower case.
+ * @return The header found or NULL
+ */
+#define MAX_TOKENS 2
+gchar* get_response_header(
+		const char* header, gchar* headers, gboolean lowcase) {
+	gchar* line;
+	gchar* head = NULL;
+	gchar* oldhead = NULL;
+	gchar** buf;
+	gchar* header_list;
+	gchar* saveptr;
+
+	header_list = g_strdup(headers);
+	line = strtok_r(header_list, "\r\n", &saveptr);
+	if (line != NULL) {
+		do  {
+			buf = g_strsplit(line, ":", MAX_TOKENS);
+			if (buf[1] != NULL) {
+				if (g_ascii_strcasecmp(buf[0], header) == 0) {
+					if (head) {
+						oldhead = head;
+						head = g_strconcat(head, ", ", buf[1], NULL);
+						g_free(oldhead);
+					}
+					else
+						head = g_strdup(buf[1]);
+					if (head)
+						g_strstrip(head);
+				}
+			}
+			g_strfreev(buf);
+		} while ((line = strtok_r(NULL, "\r\n", &saveptr)) != NULL);
+	}
+	g_free(header_list);
+	if (head)
+		return (lowcase) ? g_ascii_strdown(head, -1) : head;
+	else
+		return NULL;
+}
+
+static const char* VCAL_HEAD =
+"BEGIN:VCALENDAR\r\n"
+"PRODID:-//CalDAV Calendar//NONSGML libcaldav//EN\r\n"
+"VERSION:2.0\r\n";
+static const char* VCAL_FOOT = "END:VCALENDAR";
+
+/**
+ * Parse response from CalDAV server. Internal function.
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @param wrap Is this the final parsing or just a part
+ * @param recursive Stop after first match or not
+ * @return the parsed result
+ */
+static gchar* parse_caldav_report_wrap(
+		char* report, const char* element, const char* type,
+			gboolean wrap, gboolean recursive) {
+	char* pos;
+	char* start;
+	char* object;
+	char* tmp_report;
+	char* tmp;
+	gchar* response;
+	gchar* begin_type;
+	gchar* end_type;
+	gboolean keep_going = TRUE;
+
+	begin_type = g_strdup_printf("BEGIN:%s", type);
+	end_type = g_strdup_printf("END:%s", type);
+	pos = start = object = response = NULL;
+	tmp_report = g_strdup(report);
+	while ((pos = strstr(tmp_report, element)) != NULL && keep_going) {
+		pos = strchr(pos, '>');
+		if (!pos) {
+			break;
+		}
+		pos = &(*(pos + 1));
+		pos = strstr(pos, begin_type);
+		if (!pos) {
+			break;
+		}
+		object = &(*(pos + strlen(begin_type)));
+		object = g_strchug(object);
+		start = g_strdup(object);
+		if ((pos = strstr(start, end_type)) == NULL) {
+			g_free(start);
+			break;
+		}
+		object = g_strndup(start, strlen(start) - strlen(pos));
+		if (response) {
+			tmp = g_strdup(response);
+			g_free(response);
+			response = g_strdup_printf("%s%s\r\n%s%s\r\n",
+				tmp, begin_type, object, end_type);
+			g_free(tmp);
+		}
+		else {
+			if (wrap)
+				response = g_strdup_printf("%s%s\r\n%s%s\r\n",
+					VCAL_HEAD, begin_type, object, end_type);
+			else
+				response = g_strdup_printf("%s\r\n%s%s\r\n",
+					begin_type, object, end_type);
+		}
+		if (recursive) {
+			pos = strchr(pos, '>');
+			g_free(tmp_report);
+			tmp_report = g_strdup(&(*(pos + 1)));
+		}
+		else {
+			keep_going = FALSE;
+		}
+		g_free(start);
+		g_free(object);
+	}
+	g_free(tmp_report);
+	g_free(begin_type);
+	g_free(end_type);
+	if (wrap)
+		if (response) {
+			object = g_strdup(response);
+			g_free(response);
+			response = g_strdup_printf("%s%s", object, VCAL_FOOT);
+			g_free(object);
+		}
+	return response;
+}
+
+/**
+ * Parse response from CalDAV server
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @return the parsed result
+ */
+gchar* parse_caldav_report(char* report, const char* element, const char* type) {
+	gchar* response = NULL;
+	gchar* timezone = NULL;
+	gchar* temp = NULL;
+
+	if (!report || !element || !type)
+		return NULL;
+	/* test for VTIMEZONE.
+	 * Only the first found will be used and this will then
+	 * be the time zone for the entire report
+	 */
+	timezone = parse_caldav_report_wrap(
+			report, element, "VTIMEZONE", FALSE, FALSE);
+	if (timezone) {
+			response = g_strdup_printf("%s%s", VCAL_HEAD, timezone);
+			g_free(timezone);
+			temp = parse_caldav_report_wrap(report, element, type, FALSE, TRUE);
+			if (temp) {
+				gchar* tmp = g_strdup(response);
+				g_free(response);
+				response = g_strdup_printf("%s%s%s", tmp, temp, VCAL_FOOT);
+				g_free(tmp);
+				g_free(temp);
+			}
+			else {
+				g_free(response);
+				return NULL;
+			}
+	}
+	else
+		response = parse_caldav_report_wrap(report, element, type, TRUE, TRUE);
+	return response;
+}
+
+/**
+ * Convert a time_t variable to CalDAV DateTime
+ * @param time a specific date and time
+ * @return the CalDAV DateTime
+ */
+gchar* get_caldav_datetime(time_t* time) {
+	struct tm *current;
+	gchar* datetime;
+
+	current = localtime(time);
+	datetime = g_strdup_printf("%d%.2d%.2dT%.2d%.2d%.2dZ",
+		current->tm_year + 1900, current->tm_mon + 1, current->tm_mday,
+		current->tm_hour, current->tm_min, current->tm_sec);
+	return datetime;
+}
+
+/**
+ * Create a random text string, using MD5. @see caldav_md5_hex_digest()
+ * @param text some text to randomize
+ * @return MD5 hash of text
+ */
+gchar* random_file_name(gchar* text) {
+	unsigned char* name;
+	gchar md5sum[33];
+
+	name = (unsigned char *) g_strdup(text);
+	caldav_md5_hex_digest(md5sum, name);
+	g_free(name);
+	return g_strdup(md5sum);
+}
+
+/**
+ * Does the event contain a UID element or not. If not add it.
+ * @param object A specific event
+ * @return event, eventually added UID
+ */
+gchar* verify_uid(gchar* object) {
+	gchar* uid;
+	gchar* newobj;
+	gchar* pos;
+
+	newobj = g_strdup(object);
+	uid = get_response_header("uid", object, TRUE);
+	if (!uid) {
+		object = g_strdup(newobj);
+		g_free(newobj);
+		pos = strstr(object, "END:VEVENT");
+		newobj = g_strndup(object, strlen(object) - strlen(pos));
+		newobj = g_strchomp(newobj);
+		uid = random_file_name(object);
+		gchar*tmp = g_strdup(newobj);
+		g_free(newobj);
+		newobj = g_strdup_printf("%s\r\nUID:libcaldav-%s@tempuri.org\r\n%s",
+					tmp, uid, pos);
+		g_free(uid);
+		g_free(tmp);
+		g_free(object);
+	}
+	else
+		g_free(uid);
+	/*uid = g_strdup(newobj);
+	g_free(newobj);*/
+	g_strchomp(newobj);
+	/*g_free(uid);*/
+	return newobj;
+}
+
+/**
+ * Fetch a URL from a XML element
+ * @param text String
+ * @return URL
+ */
+#define ELEM_HREF "href>"
+gchar* get_url(gchar* text) {
+	gchar* pos;
+	gchar* url = NULL;
+
+	if ((pos = strstr(text, ELEM_HREF)) == NULL)
+		return url;
+	pos = &(*(pos + strlen(ELEM_HREF)));
+	url = g_strndup(pos, strlen(pos) - strlen(strchr(pos, '<')));
+	return url;
+}
+
+/**
+ * Fetch any element from XML
+ * @param text String
+ * @param tag The element to look for
+ * @return element
+ */
+gchar* get_tag(const gchar* tag, gchar* text) {
+	gchar *pos;
+	gchar* res = NULL;
+	gchar* the_tag = NULL;
+
+	/*printf("%s\n", text);*/
+	the_tag = g_strdup_printf("<%s>", tag);
+	if ((pos = strstr(text, the_tag)) == NULL) {
+		g_free(the_tag);
+		return res;
+	}
+	pos = &(*(pos + strlen(the_tag)));
+	res = g_strndup(pos, strlen(pos) - strlen(strchr(pos, '<')));
+	g_free(the_tag);
+	return res;	
+}
+
+/**
+ * Fetch the etag element from XML
+ * @param text String
+ * @return etag
+ */
+#define ELEM_ETAG "getetag"
+gchar* get_etag(gchar* text) {
+	gchar* etag = NULL;
+	
+	etag = get_tag(ELEM_ETAG, text);
+	/* Maybe namespace prefixed */
+	if (!etag) {
+		etag = get_tag("D:getetag", text);
+	}
+	return etag;
+}
+
+/**
+ * Fetch host from URL
+ * @param url URL
+ * @return host
+ */
+gchar* get_host(gchar* url) {
+	gchar** buf;
+	gchar* result = NULL;
+
+	buf = g_strsplit(url, "/", 2);
+	if (buf[0]) {
+		result = g_strdup(buf[0]);
+	}
+	g_strfreev(buf);
+	return result;
+}
+
+/**
+ * rebuild a raw URL with https if needed from the settings
+ * @param settings caldav_settings
+ * @param uri URI to use instead of base
+ * @return URL
+ */
+
+gchar* rebuild_url(caldav_settings* settings, gchar* uri){
+    gchar* url = NULL;
+    gchar* mystr = NULL;
+	if (settings->usehttps) {
+		mystr = "https://";
+	} else {
+		mystr = "http://";
+	}
+	if (uri)
+		url = g_strdup_printf("%s%s", mystr, uri);
+	else
+    	url = g_strdup_printf("%s%s", mystr,settings->url);
+
+	return url;
+}
+
+/**
+ * Prepare a curl connection
+ * @param settings caldav_settings
+ * @return CURL
+ */
+CURL* get_curl(caldav_settings* setting) {
+	CURL* curl;
+	gchar* userpwd = NULL;
+	gchar* url = NULL;
+
+	curl = curl_easy_init();
+	if (curl) {
+		if (setting->username) {
+			if (setting->password)
+				userpwd = g_strdup_printf("%s:%s",
+					setting->username, setting->password);
+			else
+				userpwd = g_strdup_printf("%s",	setting->username);
+			curl_easy_setopt(curl, CURLOPT_USERPWD, userpwd);
+			g_free(userpwd);
+		}
+		if (setting->verify_ssl_certificate)
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2);
+		else {
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
+		}
+		if (setting->custom_cacert)
+			curl_easy_setopt(curl, CURLOPT_CAINFO, setting->custom_cacert);
+		curl_easy_setopt(curl, CURLOPT_USERAGENT, __CALDAV_USERAGENT);
+		url = rebuild_url(setting, NULL);
+		curl_easy_setopt(curl, CURLOPT_URL, url);
+		g_free(url);
+	}
+	return (curl) ? curl : NULL;
+}
diff --git a/src/.svn/text-base/caldav-utils.h.svn-base b/src/.svn/text-base/caldav-utils.h.svn-base
new file mode 100644
index 0000000..02c84d7
--- /dev/null
+++ b/src/.svn/text-base/caldav-utils.h.svn-base
@@ -0,0 +1,221 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __CALDAV_UTILS_H__
+#define __CALDAV_UTILS_H__
+
+#include <glib.h>
+#include <stdlib.h>
+#include <curl/curl.h>
+#include "caldav.h"
+
+/**
+ * @typedef struct _CALDAV_SETTINGS caldav_settings
+ * A pointer to a struct _CALDAV_SETTINGS
+ */
+typedef struct _CALDAV_SETTINGS caldav_settings;
+
+/**
+ * @struct _CALDAV_SETTINGS
+ * A struct used to exchange all user input between various parts
+ * of the library
+ */
+struct _CALDAV_SETTINGS {
+	gchar* username;
+	gchar* password;
+	gchar* url;
+	gchar* file;
+	gboolean usehttps;
+	gboolean verify_ssl_certificate;
+	gchar* custom_cacert;
+	gboolean debug;
+	gboolean use_locking;
+	char trace_ascii;
+	CALDAV_ACTION ACTION;
+	time_t start;
+	time_t end;
+};
+
+/**
+ * @typedef struct MemoryStruct memory_ptr
+ * A pointer to a struct MemoryStruct
+ */
+typedef struct MemoryStruct memory_ptr;
+
+/**
+ * @struct MemoryStruct
+ * Used to hold messages between the CalDAV server and the library
+ */
+struct MemoryStruct {
+	char *memory;
+	size_t size;
+};
+
+/** @struct config_data
+ * Used to exchange user options to the library
+ */
+struct config_data {
+	char trace_ascii;
+};
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param text
+ * @param stream
+ * @param ptr
+ * @param size
+ * @param nohex
+ */
+void dump(const char* text, FILE* stream, char* ptr, size_t size, char nohex);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param handle
+ * @param type
+ * @param data
+ * @param size
+ * @param userp
+ * @return
+ */
+int my_trace(CURL* handle, curl_infotype type, char* data, size_t size, void* userp);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @return void* to memory region
+ */
+size_t WriteMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteHeaderCallback(void* ptr, size_t size, size_t nmemb, void* data);
+
+/*size_t ReadMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data);*/
+
+/**
+ * Initialize caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void init_caldav_settings(caldav_settings* settings);
+
+/**
+ * Free momory assigned to caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void free_caldav_settings(caldav_settings* settings);
+
+/**
+ * Parse URL
+ * @param settings @see caldav_settings
+ * @param url String containing URL to collection
+ */
+void parse_url(caldav_settings* settings, const char* url);
+
+/**
+ * Find a specific HTTP header from last request
+ * @param header HTTP header to search for
+ * @param headers String of HTTP headers from last request
+ * @param lowcase Should string be returned in all lower case.
+ * @return The header found or NULL
+ */
+gchar* get_response_header(
+		const char* header, gchar* headers, gboolean lowcase);
+
+/**
+ * Parse response from CalDAV server
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @return the parsed result
+ */
+gchar* parse_caldav_report(char* report, const char* element, const char* type);
+
+/**
+ * Convert a time_t variable to CalDAV DateTime
+ * @param time a specific date and time
+ * @return the CalDAV DateTime
+ */
+gchar* get_caldav_datetime(time_t* time);
+
+/**
+ * Create a random text string, using MD5. @see caldav_md5_hex_digest()
+ * @param text some text to randomize
+ * @return MD5 hash of text
+ */
+gchar* random_file_name(gchar* text);
+
+/**
+ * Does the event contain a UID element or not. If not add it.
+ * @param object A specific event
+ * @return event, eventually added UID
+ */
+gchar* verify_uid(gchar* object);
+
+/**
+ * Fetch a URL from a XML element
+ * @param text String
+ * @return URL
+ */
+gchar* get_url(gchar* text);
+
+/**
+ * Fetch host from URL
+ * @param url URL
+ * @return host
+ */
+gchar* get_host(gchar* url);
+
+/**
+ * Fetch the etag element from XML
+ * @param text String
+ * @return etag
+ */
+gchar* get_etag(gchar* text);
+
+/**
+ * Fetch any element from XML
+ * @param text String
+ * @return element
+ */
+gchar* get_tag(const gchar* tag, gchar* text);
+
+
+
+/**
+ * rebuild a raw URL with https if needed from the settings
+ * @param settings caldav_settings
+ * @return URL
+ */
+gchar* rebuild_url(caldav_settings* setting, gchar* uri);
+
+/**
+ * Prepare a curl connection
+ * @param settings caldav_settings
+ * @return CURL
+ */
+CURL* get_curl(caldav_settings* setting);
+
+#endif
diff --git a/src/.svn/text-base/caldav.c.svn-base b/src/.svn/text-base/caldav.c.svn-base
new file mode 100644
index 0000000..193429c
--- /dev/null
+++ b/src/.svn/text-base/caldav.c.svn-base
@@ -0,0 +1,745 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "caldav.h"
+#include "caldav-utils.h"
+#include "get-caldav-report.h"
+#include "add-caldav-object.h"
+#include "delete-caldav-object.h"
+#include "modify-caldav-object.h"
+#include "get-display-name.h"
+#include "options-caldav-server.h"
+#include "get-freebusy-report.h"
+#include <curl/curl.h>
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void init_runtime(runtime_info* info) {
+    if (! info)
+		return;
+    if (! info->error)
+		info->error = g_new0(caldav_error, 1);
+    if (! info->options) {
+		info->options = g_new0(debug_curl, 1);
+		info->options->trace_ascii = 1;
+		info->options->debug = 0;
+		info->options->verify_ssl_certificate = TRUE;
+		info->options->use_locking = TRUE;
+		info->options->custom_cacert = NULL;
+    }
+}
+
+/**
+ * @param curl An instance of libcurl.
+ * @param settings Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. URL is part of the structure. [http://][username:password@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return FALSE (zero) mens URL does not reference a CalDAV calendar
+ * resource. TRUE if the URL does reference a CalDAV calendar resource.
+ */
+static gboolean test_caldav_enabled(CURL* curl,
+				    caldav_settings* settings,
+				    caldav_error* error) {
+	return caldav_getoptions(curl, settings, NULL, error, TRUE);
+}
+
+/* 
+ * @param settings An instance of caldav_settings. @see caldav_settings
+ * @return TRUE if there was an error. Error can be in libcurl, in libcaldav,
+ * or an error related to the CalDAV protocol.
+ */
+static gboolean make_caldav_call(caldav_settings* settings,
+				 runtime_info* info) {
+	CURL* curl;
+	gboolean result = FALSE;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	curl = get_curl(settings);
+	if (!curl) {
+		info->error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+	if (!test_caldav_enabled(curl, settings, info->error)) {
+		g_free(settings->file);
+		settings->file = NULL;
+		curl_easy_cleanup(curl);
+		return TRUE;
+	}
+	curl_easy_cleanup(curl);
+	switch (settings->ACTION) {
+		case GETALL: result = caldav_getall(settings, info->error); break;
+		case GET: result = caldav_getrange(settings, info->error); break;
+		case ADD: result = caldav_add(settings, info->error); break;
+		case DELETE: result = caldav_delete(settings, info->error); break;
+		case MODIFY: result = caldav_modify(settings, info->error); break;
+		case GETCALNAME: result = caldav_getname(settings, info->error); break;
+		case FREEBUSY: result = caldav_freebusy(settings, info->error); break;
+		default: break;
+	}
+	return result;
+}
+
+/**
+ * Function for adding a new event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_add_object(const char* object,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = ADD;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for deleting an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = DELETE;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for modifying an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = MODIFY;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting a collection of events determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_object(response *result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GET;
+	settings.start = start;
+	settings.end = end;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting all events from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETALL;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting the stored display name for the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_displayname(response* result,
+				       const char* URL,
+				       runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETCALNAME;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function to test wether a calendar resource is CalDAV enabled or not.
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @result 0 (zero) means no CalDAV support, otherwise CalDAV support
+ * detechted.
+ */
+int caldav_enabled_resource(const char* URL, runtime_info* info) {
+	CURL* curl;
+	caldav_settings settings;
+	struct config_data data;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+
+	parse_url(&settings, URL);
+	curl = get_curl(&settings);
+	if (!curl) {
+		info->error->code = -1;
+		info->error->str = g_strdup("Could not initialize libcurl");
+		settings.file = NULL;
+		return TRUE;
+	}
+
+	if (info->options->trace_ascii)
+		data.trace_ascii = 1;
+	else
+		data.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+
+	if (info->options->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gboolean res = test_caldav_enabled(curl, &settings, info->error);
+	free_caldav_settings(&settings);
+	curl_easy_cleanup(curl);
+	return (res && (info->error->code == 0 || info->error->code == 200)) ? 1 : 0;
+}
+
+/**
+ * Function for getting free/busy information.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_freebusy(response *result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = FREEBUSY;
+	settings.start = start;
+	settings.end = end;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function which supports sending various options inside the library.
+ * @param curl_options A struct debug_curl. See debug_curl.
+ */
+void caldav_set_options(debug_curl curl_options) {
+}
+
+/** 
+ * @deprecated Function to call in case of errors.
+ * Caller provides a pointer to a local caldav_error structure.
+ * Caldav_get_error will initialize pointer if NULL.
+ * Caller is responsible for freeing returned memory.
+ * After the first call the internal error buffer is reset.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ * @return An initialized caldav_error pointer to memory where error
+ * messages can be found from the last call to the library.
+ */
+caldav_error* caldav_get_error(caldav_error* lib_error) {
+	if (!lib_error) {
+		lib_error = g_new0(caldav_error, 1);
+	}
+	return lib_error;
+}
+
+/** 
+ * Function for freeing memory for a previous initialization of a
+ * caldav_error. @see caldav_get_error()
+ * Caller provides a pointer to a local caldav_error structure.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ */
+void caldav_free_error(caldav_error* lib_error) {
+	if (lib_error->str)
+		g_free(lib_error->str);
+	g_free(lib_error);
+	lib_error = NULL;
+}
+
+/**
+ * Function to call to get a list of supported CalDAV options for a server
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @result A list of available options or NULL in case of any error.
+ */
+char** caldav_get_server_options(const char* URL, runtime_info* info) {
+	CURL* curl;
+	caldav_settings settings;
+	response server_options;
+	gchar** option_list = NULL;
+	gchar** tmp;
+	gboolean res = FALSE;
+
+	g_return_val_if_fail(info != NULL, NULL);
+
+	init_runtime(info);
+	tmp = option_list = NULL;
+	init_caldav_settings(&settings);
+
+	parse_url(&settings, URL);
+	curl = get_curl(&settings);
+	if (!curl) {
+		info->error->code = -1;
+		info->error->str = g_strdup("Could not initialize libcurl");
+		settings.file = NULL;
+		return NULL;
+	}
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+
+	res = caldav_getoptions(curl, &settings, &server_options, info->error, FALSE);
+	if (res) {
+		if (server_options.msg) {
+			option_list = g_strsplit(server_options.msg, ", ", 0);
+			tmp = &(*(option_list));
+			while (*tmp) {
+				g_strstrip(*tmp++);
+			}
+		}
+	}
+	free_caldav_settings(&settings);
+	curl_easy_cleanup(curl);
+	return (option_list) ? option_list : NULL;
+}
+
+/**
+ * Function for getting an initialized runtime_info structure
+ * @return runtime_info. @see runtime_info
+ */
+runtime_info* caldav_get_runtime_info() {
+	runtime_info* rt_info;
+	
+	rt_info = g_new0(runtime_info, 1);
+	rt_info->error = g_new0(caldav_error, 1);
+	rt_info->options = g_new0(debug_curl, 1);
+	
+	return rt_info;
+}
+
+/**
+ * Function for freeing memory for a previous initialization of an info
+ * structure
+ * @param info Address to a pointer to a runtime_info structure. @see 
+ * runtime_info
+ */
+void caldav_free_runtime_info(runtime_info** info) {
+    runtime_info* ri;
+
+    if (*info) {
+		ri = *info;
+		if (ri->error) {
+		    if (ri->error->str)
+			g_free(ri->error->str);
+		    g_free(ri->error);
+		    ri->error = NULL;
+		}
+		if (ri->options) {
+		    if (ri->options->custom_cacert)
+			g_free(ri->options->custom_cacert);
+		    g_free(ri->options);
+		    ri->options = NULL;
+		}
+		g_free(ri);
+		*info = ri = NULL;
+    }
+}
+
+/**
+ * Function for getting an initialized response structure
+ * @return response. @see _response
+ */
+response* caldav_get_response() {
+	response* r;
+	
+	r = g_new0(response, 1);
+	
+	return r;
+}
+
+/**
+ * Function for freeing memory for a previous initialization of an response
+ * structure
+ * @param info Address to a pointer to a response structure. @see 
+ * _response
+ */
+void caldav_free_response(response** resp) {
+	response* r;
+
+	if (*resp) {
+		r = *resp;
+		if (r->msg)
+			g_free(r->msg);
+		g_free(r);
+		*resp = r = NULL;
+	}
+}
diff --git a/src/.svn/text-base/caldav.h.svn-base b/src/.svn/text-base/caldav.h.svn-base
new file mode 100644
index 0000000..28cb24e
--- /dev/null
+++ b/src/.svn/text-base/caldav.h.svn-base
@@ -0,0 +1,343 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/**
+ * @file caldav.h
+ * @brief interface to the caldav library.
+ * The library conforms to RFC4791. For further information follow this
+ * link http://www.ietf.org/rfc/rfc4791.txt
+ */
+
+/** 
+ * @mainpage
+ * This document is the documentation for the public interface to libcaldav.
+ * If you want to study the implementation look for the developers API.
+ *
+ * The libray and documentation is Copyright (c) 2008 Michael Rasmussen
+ * (mir@datanom.net)
+ *
+ * License for the source code.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * License for the documentation.
+ *
+ * Permission is granted to copy, distribute and/or modify this document
+ * under the terms of the GNU Free Documentation License, Version 1.2
+ * or any later version published by the Free Software Foundation;
+ * with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
+ * Texts.
+ */
+
+#ifndef __CALDAV_H__
+#define __CALDAV_H__
+
+#include <time.h>
+
+/* For debug purposes */
+/**
+ * @typedef struct debug_curl
+ * A struct used to set internal options in the library
+ */
+typedef struct {
+  int		trace_ascii; /** @var int trace_ascii
+					 	  * 0 or 1
+					 	  */
+  int		debug;       /** @var int debug
+					 	  * 0 or 1
+					 	  */
+  int		verify_ssl_certificate;
+  int		use_locking;
+  char*		custom_cacert; 
+} debug_curl;
+
+/**
+ * @typedef struct _caldav_error caldav_error
+ * Pointer to a caldav_error structure
+ */
+typedef struct _caldav_error caldav_error;
+
+/**
+ * @struct _caldav_error
+ * A struct for storing error codes and messages
+ */
+struct _caldav_error {
+	long code; /**
+				* @var long code
+				* if < 0 internal error > 0 CalDAV protocol error.
+				*/
+	char* str; /** @var char* str
+				* For storing human readable error message
+				*/
+};
+
+/**
+ * @typedef struct runtime_info
+ * Pointer to a runtime structure holding debug and error information
+ */
+typedef struct {
+    caldav_error*   error;
+    debug_curl*	    options;
+} runtime_info;
+
+/* CalDAV is defined in RFC4791 */
+
+/* Buffer to hold response */
+/**
+ * @typedef struct _response response
+ * Pointer to a _response structure
+ */
+typedef struct _response response;
+
+/**
+ * @struct _response
+ * A struct used for returning messages from the library to users
+ */
+struct _response {
+	char* msg; /** @var char* msg
+				* String for storing response
+				*/
+};
+
+/**
+ * @enum CALDAV_ACTION specifies supported CalDAV actions.
+ * UNKNOWN. An unknown action.
+ * ADD. Add a CalDAV calendar object.
+ * DELETE. Delete a CalDAV calendar object.
+ * MODIFY. Modify a CalDAV calendar object.
+ * GET. Get one or more CalDAV calendar object(s).
+ * GETALL. Get all CalDAV calendar objects.
+ */
+typedef enum {
+	UNKNOWN,
+	ADD,
+	DELETE,
+	FREEBUSY,
+	MODIFY,
+	GET,
+	GETALL,
+	GETCALNAME,
+	ISCALDAV,
+	OPTIONS
+} CALDAV_ACTION;
+
+/**
+ * @enum CALDAV_RESPONSE specifies CalDAV error states.
+ * OK (HTTP 200). Request was satisfied.
+ * FORBIDDEN (HTTP 403). Access not allowed. Dont repeat request.
+ * CONFLICT (HTTP 409). Conflict between current state of CalDAV collection
+ * and request. Client must solve the conflict and then resend request.
+ * LOCKED (HTTP 423). Locking failed.
+ */
+typedef enum {
+	OK,
+	FORBIDDEN,
+	CONFLICT,
+	LOCKED,
+	NOTIMPLEMENTED
+} CALDAV_RESPONSE;
+
+
+#ifndef __CALDAV_USERAGENT
+#define __CALDAV_USERAGENT "libcurl-agent/0.1"
+#endif
+
+
+/**
+ * Function for adding a new event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_add_object(const char* object,
+				  const char* URL,
+				  runtime_info* info);
+
+/**
+ * Function for deleting an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for modifying an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for getting a collection of events determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start for range. Included in search.
+ * @param end time_t variable specifying end for range. Included in search.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_object(response* result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info);
+
+/**
+ * Function for getting all events from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for getting the stored display name for the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_displayname(response* result,
+				       const char* URL,
+				       runtime_info* info);
+
+/**
+ * Function to test wether a calendar resource is CalDAV enabled or not.
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @result 0 (zero) means no CalDAV support, otherwise CalDAV support
+ * detechted.
+ */
+int caldav_enabled_resource(const char* URL, runtime_info* info);
+
+/**
+ * Function for getting free/busy information.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_freebusy(response *result,
+				  					time_t start,
+				  					time_t end,
+				  					const char* URL,
+				  					runtime_info* info);
+
+/** 
+ * @deprecated Always returns an initialized empty caldav_error
+ * Function to call in case of errors.
+ * Caller provides a pointer to a local caldav_error structure.
+ * Caldav_get_error will initialize pointer if NULL.
+ * Caller is responsible for freeing returned memory.
+ * After the first call the internal error buffer is reset.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ * @return An initialized caldav_error pointer to memory where error
+ * messages can be found from the last call to the library.
+ */
+caldav_error* caldav_get_error(caldav_error* lib_error);
+
+/** 
+ * Function for freeing memory for a previous initialization of a
+ * caldav_error. @see caldav_get_error()
+ * Caller provides a pointer to a local caldav_error structure.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ */
+void caldav_free_error(caldav_error* lib_error);
+
+/* Setting various options in library */
+
+/**
+ * @deprecated Does nothing
+ * Function which supports sending various options inside the library.
+ * @param curl_options A struct debug_curl. See debug_curl.
+ */
+void caldav_set_options(debug_curl curl_options);
+
+/**
+ * Function to call to get a list of supported CalDAV options for a server
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @result A list of available options or NULL in case of any error.
+ */
+char** caldav_get_server_options(const char* URL, runtime_info* info);
+
+/**
+ * Function for getting an initialized runtime_info structure
+ * @return runtime_info. @see runtime_info
+ */
+runtime_info* caldav_get_runtime_info();
+
+/**
+ * Function for freeing memory for a previous initialization of an info
+ * structure
+ * @param info Address to a pointer to a runtime_info structure. @see 
+ * runtime_info
+ */
+void caldav_free_runtime_info(runtime_info** info);
+
+/**
+ * Function for getting an initialized response structure
+ * @return response. @see _response
+ */
+response* caldav_get_response();
+
+/**
+ * Function for freeing memory for a previous initialization of an response
+ * structure
+ * @param info Address to a pointer to a response structure. @see 
+ * _response
+ */
+void caldav_free_response(response** info);
+
+#endif
diff --git a/src/.svn/text-base/delete-caldav-object.c.svn-base b/src/.svn/text-base/delete-caldav-object.c.svn-base
new file mode 100644
index 0000000..adaa916
--- /dev/null
+++ b/src/.svn/text-base/delete-caldav-object.c.svn-base
@@ -0,0 +1,284 @@
+/* vim: set textwidth=80 tabstop=4: */
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "delete-caldav-object.h"
+#include "lock-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VEVENT\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static char* search_tail =
+"</C:prop-filter>"
+"      </C:comp-filter>"
+"    </C:comp-filter>"
+"  </C:filter>"
+"</C:calendar-query>";
+
+/**
+ * Function for deleting an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_delete(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+	gboolean result = FALSE;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: infinity");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * ICalendar server does not support collation
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	g_free(search);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+			}
+			if (url) {
+				int lock = 0;
+				caldav_error lock_error;
+
+				file = g_strdup(etag);
+				g_free(etag);
+				etag = g_strdup_printf("If-Match: %s", file);
+				g_free(file);
+				http_header = curl_slist_append(http_header, etag);
+				g_free(etag);
+				http_header = curl_slist_append(http_header,
+					"Content-Type: text/calendar; charset=\"utf-8\"");
+				http_header = curl_slist_append(http_header, "Expect:");
+				http_header = curl_slist_append(
+								http_header, "Transfer-Encoding:");
+				if (settings->use_locking)
+					LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+				else
+					LOCKSUPPORT = FALSE;
+				if (LOCKSUPPORT) {
+					lock_token = caldav_lock_object(url, settings, &lock_error);
+					if (lock_token) {
+						http_header = curl_slist_append(
+							http_header, g_strdup_printf(
+									"If: (%s)", lock_token));
+					}
+					/*
+					 * If error code is 423 (Resource is LOCKED) bail out
+					 */
+					else if (lock_error.code == 423) {
+						lock = -1;
+					}
+					/*
+					 * If error code is 501 (Not implemented) we continue
+					 * hoping for the best.
+					 */
+					else if (lock_error.code == 501) {
+						lock_token = g_strdup("");
+					}
+					else {
+						lock = -1;
+					}
+				}
+				if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+					curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+					curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+					curl_easy_setopt(curl, CURLOPT_POSTFIELDS, NULL);
+					curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 0);
+					curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "DELETE");
+					curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+					curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+					curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+					res = curl_easy_perform(curl);
+					if (LOCKSUPPORT && lock_token) {
+						caldav_unlock_object(
+								lock_token, url, settings, &lock_error);
+					}
+				}
+				g_free(url);
+				g_free(lock_token);
+				if (res != 0 || lock < 0) {
+					/* Is this a lock_error don't change error*/
+					if (lock == 0 || lock_error.code == 423) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+					}
+					else {
+						error->code = lock_error.code;
+						error->str = g_strdup(lock_error.str);
+					}
+					result = TRUE;
+					g_free(settings->file);
+					settings->file = NULL;
+				}
+				else {
+					long code;
+					res = curl_easy_getinfo(
+								curl, CURLINFO_RESPONSE_CODE, &code);
+					if (code != 204) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+						result = TRUE;
+					}
+				}
+				curl_slist_free_all(http_header);
+			}
+			else {
+				error->code = code;
+				if (chunk.memory)
+					error->str = g_strdup(chunk.memory);
+				else
+					error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
diff --git a/src/.svn/text-base/delete-caldav-object.h.svn-base b/src/.svn/text-base/delete-caldav-object.h.svn-base
new file mode 100644
index 0000000..7576a29
--- /dev/null
+++ b/src/.svn/text-base/delete-caldav-object.h.svn-base
@@ -0,0 +1,35 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __DELETE_CALDAV_OBJECT_H__
+#define __DELETE_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for deleting an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_delete(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/.svn/text-base/get-caldav-report.c.svn-base b/src/.svn/text-base/get-caldav-report.c.svn-base
new file mode 100644
index 0000000..52b4e28
--- /dev/null
+++ b/src/.svn/text-base/get-caldav-report.c.svn-base
@@ -0,0 +1,254 @@
+/* vim: set textwidth=80 tabstop=4 smarttab: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "get-caldav-report.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the calendar query for fetching
+ * all events from collection.
+ */
+static const char* getall_request =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"
+"   <D:getetag/>"
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VEVENT\"/>"
+"   </C:comp-filter>"
+" </C:filter>"
+"</C:calendar-query>\r\n";
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual VEVENT to search for is added at runtime.
+ */
+static const char* getrange_request_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+/*"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"*/
+"<C:calendar-query xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop xmlns:D=\"DAV:\">"
+/*"   <D:getetag/>"*/
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VEVENT\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static const char* getrange_request_foot =
+"     </C:comp-filter>"
+"   </C:comp-filter>"
+" </C:filter>"
+"</C:calendar-query>\r\n";
+
+/**
+ * Function for getting all events from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getall(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, getall_request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(getall_request));
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			gchar* report;
+			report = parse_caldav_report(
+						chunk.memory, "calendar-data", "VEVENT");
+			settings->file = g_strdup(report);
+			g_free(report);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for getting all events within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getrange(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE + 1];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* request = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	request = g_strdup_printf(
+		"%s\r\n<C:time-range start=\"%s\"\r\n end=\"%s\"/>\r\n%s",
+			getrange_request_head, get_caldav_datetime(&settings->start),
+			get_caldav_datetime(&settings->end), getrange_request_foot);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(request));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		gchar* report;
+		report = parse_caldav_report(chunk.memory, "calendar-data", "VEVENT");
+		settings->file = g_strdup(report);
+		g_free(report);
+	}
+	g_free(request);
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/.svn/text-base/get-caldav-report.h.svn-base b/src/.svn/text-base/get-caldav-report.h.svn-base
new file mode 100644
index 0000000..7bce7f3
--- /dev/null
+++ b/src/.svn/text-base/get-caldav-report.h.svn-base
@@ -0,0 +1,43 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GET_CALDAV_REPORT_H__
+#define __GET_CALDAV_REPORT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+#include <glib.h>
+
+/**
+ * Function for getting all events from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getall(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for getting all events within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getrange(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/.svn/text-base/get-display-name.c.svn-base b/src/.svn/text-base/get-display-name.c.svn-base
new file mode 100644
index 0000000..c776713
--- /dev/null
+++ b/src/.svn/text-base/get-display-name.c.svn-base
@@ -0,0 +1,138 @@
+/* vim: set textwidth=80 tabstop=4 smarttab: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "get-caldav-report.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the calendar query for fetching
+ * the stored display name for the collection.
+ */
+static const char* getname_request =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<D:propfind xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:displayname/>"
+"  </D:prop>"
+"</D:propfind>\r\n";
+
+/**
+ * Function for getting the display name from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getname(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 0");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, getname_request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(getname_request));
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PROPFIND");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			gchar* displayname;
+			displayname = get_tag("displayname", chunk.memory);
+			/* Maybe namespace prefixed */
+			if (!displayname) {
+				displayname = get_tag("D:displayname", chunk.memory);
+			}
+			settings->file = (displayname) ? 
+					g_strdup(displayname) : g_strdup("");
+			g_free(displayname);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/.svn/text-base/get-display-name.h.svn-base b/src/.svn/text-base/get-display-name.h.svn-base
new file mode 100644
index 0000000..5c80272
--- /dev/null
+++ b/src/.svn/text-base/get-display-name.h.svn-base
@@ -0,0 +1,34 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GET_DISPLAY_NAME_H__
+#define __GET_DISPLAY_NAME_H__
+
+#include "caldav-utils.h"
+
+/**
+ * Function for getting the display name from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getname(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/.svn/text-base/lock-caldav-object.c.svn-base b/src/.svn/text-base/lock-caldav-object.c.svn-base
new file mode 100644
index 0000000..1ddf926
--- /dev/null
+++ b/src/.svn/text-base/lock-caldav-object.c.svn-base
@@ -0,0 +1,292 @@
+/* vim: set textwidth=80 tabstop=4: */
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "lock-caldav-object.h"
+#include "options-caldav-server.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the lock query.
+ */
+static char* lock_query =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<D:lockinfo xmlns:D=\"DAV:\">"
+"  <D:lockscope><D:exclusive/></D:lockscope>"
+"  <D:locktype><D:write/></D:locktype>"
+"</D:lockinfo>";
+
+/**
+ * Function which requests a lock on a calendar resource
+ * @param URI The resource to request lock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return The Lock-Token or NULL in case of error
+ */
+gchar* caldav_lock_object(
+		gchar* URI, caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* lock_token = NULL;
+	gchar* url;
+
+	if (! caldav_lock_support(settings, error))
+		return lock_token;
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return lock_token;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Timeout: Second-300");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	if (settings->usehttps) {
+		url = g_strdup_printf("https://%s", URI);
+	} else {
+		url = g_strdup_printf("http://%s", URI);
+	}
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	g_free(url);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, lock_query);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(lock_query));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "LOCK");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 200) {
+			gchar* status = get_tag("status", chunk.memory);
+			if (status && strstr(status, "423") != NULL) {
+				error->code = 423;
+				error->str = g_strdup(status);
+			}
+			else {
+				error->code = code;
+				error->str = g_strdup(chunk.memory);
+			}
+			g_free(status);
+		}
+		else {
+			lock_token = get_response_header(
+						"Lock-Token", headers.memory, FALSE);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return lock_token;
+}
+
+/**
+ * Function which requests to have a lock removed from a calendar resource
+ * @param lock_token A privious aquired Lock-Token
+ * @param URI The resource to request unlock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return False in case the lock could not be removed. True otherwise.
+ */
+gboolean caldav_unlock_object(gchar* lock_token, gchar* URI, 
+			caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* url;
+
+	if (! caldav_lock_support(settings, error))
+		return result;
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header, 
+			g_strdup_printf("Lock-Token: %s", lock_token));
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	if (settings->usehttps) {
+		url = g_strdup_printf("https://%s", URI);
+	} else {
+		url = g_strdup_printf("http://%s", URI);
+	}
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	g_free(url);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "UNLOCK");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 204) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+		}
+		else {
+			result = TRUE;
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function to test whether the server supports locking or not. Searching
+ * for PROP LOCK. If LOCK is present then according to RFC4791 PROP UNLOCK
+ * must also be present.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return True if locking is supported by the server. False otherwise
+ */
+gboolean caldav_lock_support(caldav_settings* settings, caldav_error* error) {
+	gboolean found = FALSE;
+	gchar* url = NULL;
+	gchar* mystr = NULL;
+	runtime_info* info;
+	
+	info = caldav_get_runtime_info();
+	info->options->verify_ssl_certificate = settings->verify_ssl_certificate;
+	info->options->custom_cacert = g_strdup(settings->custom_cacert);
+	if (settings->usehttps) {
+		mystr =  g_strdup("https://");
+	} else {
+		mystr =  g_strdup("http://");
+	}
+	
+
+	if (settings->username && settings->password) {
+		url = g_strdup_printf("%s%s:%s@%s",
+				mystr, settings->username, settings->password, settings->url);
+	}
+	else if (settings->username) {
+		url = g_strdup_printf("%s%s@%s", 
+				mystr, settings->username, settings->url);
+	}
+	else {
+		url = g_strdup_printf("%s%s", mystr, settings->url);
+	}
+	gchar** options = caldav_get_server_options(url, info);
+	g_free(url);
+	gchar** tmp = options;
+	caldav_free_runtime_info(&info);
+	while (*options) {
+		if (strcmp(*options++, "LOCK") == 0) {
+			found = TRUE;
+			break;
+		}
+	}
+	g_strfreev(tmp);			
+	g_free(mystr);
+	return found;
+}
+
+
diff --git a/src/.svn/text-base/lock-caldav-object.h.svn-base b/src/.svn/text-base/lock-caldav-object.h.svn-base
new file mode 100644
index 0000000..6dd884f
--- /dev/null
+++ b/src/.svn/text-base/lock-caldav-object.h.svn-base
@@ -0,0 +1,55 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __LOCK_CALDAV_OBJECT_H__
+#define __LOCK_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function which requests a lock on a calendar resource
+ * @param URI The resource to request lock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return The Lock-Token or NULL in case of error
+ */
+gchar* caldav_lock_object(
+		gchar* URI, caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function which requests to have a lock removed from a calendar resource
+ * @param lock_token A privious aquired Lock-Token
+ * @param URI The resource to request unlock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return False in case the lock could not be removed. True otherwise.
+ */
+gboolean caldav_unlock_object(gchar* lock_token, gchar* URI, 
+		caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function to test whether the server supports locking or not
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return True if locking is supported by the server. False otherwise
+ */
+gboolean caldav_lock_support(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/.svn/text-base/md5.c.svn-base b/src/.svn/text-base/md5.c.svn-base
new file mode 100644
index 0000000..62d4b2d
--- /dev/null
+++ b/src/.svn/text-base/md5.c.svn-base
@@ -0,0 +1,442 @@
+/** md5.c - MD5 Message-Digest Algorithm
+ *	Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+ *
+ * according to the definition of MD5 in RFC 1321 from April 1992.
+ * NOTE: This is *not* the same file as the one from glibc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 3, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+ * heavily modified for GnuPG by <werner.koch@guug.de>.
+ * modified again for Sylpheed by <wk@gnupg.org> 2001-02-11.
+ */
+
+
+/* Test values:
+ * ""                  D4 1D 8C D9 8F 00 B2 04  E9 80 09 98 EC F8 42 7E
+ * "a"                 0C C1 75 B9 C0 F1 B6 A8  31 C3 99 E2 69 77 26 61
+ * "abc                90 01 50 98 3C D2 4F B0  D6 96 3F 7D 28 E1 7F 72
+ * "message digest"    F9 6B 69 7D 7C B7 93 8D  52 5A 2F 31 AA F1 61 D0
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "md5.h"
+
+/****************
+ * Rotate a 32 bit integer by n bytes
+ */
+#if defined(__GNUC__) && defined(__i386__)
+static inline u32
+rol( u32 x, int n)
+{
+	__asm__("roll %%cl,%0"
+		:"=r" (x)
+		:"0" (x),"c" (n));
+	return x;
+}
+#else
+#define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
+#endif
+
+
+static void
+md5_init(MD5_CONTEXT *ctx)
+{
+	ctx->A = 0x67452301;
+	ctx->B = 0xefcdab89;
+	ctx->C = 0x98badcfe;
+	ctx->D = 0x10325476;
+
+	ctx->nblocks = 0;
+	ctx->count = 0;
+	ctx->finalized = 0;
+}
+
+/* These are the four functions used in the four steps of the MD5 algorithm
+   and defined in the RFC 1321.  The first function is a little bit optimized
+   (as found in Colin Plumbs public domain implementation).  */
+/* #define FF(b, c, d) ((b & c) | (~b & d)) */
+#define FF(b, c, d) (d ^ (b & (c ^ d)))
+#define FG(b, c, d) FF (d, b, c)
+#define FH(b, c, d) (b ^ c ^ d)
+#define FI(b, c, d) (c ^ (b | ~d))
+
+
+/****************
+ * transform n*64 bytes
+ */
+static void
+transform(MD5_CONTEXT *ctx, const unsigned char *data)
+{
+	u32 correct_words[16];
+	u32 A = ctx->A;
+	u32 B = ctx->B;
+	u32 C = ctx->C;
+	u32 D = ctx->D;
+	u32 *cwp = correct_words;
+
+#ifdef BIG_ENDIAN_HOST
+	{
+		int i;
+		unsigned char *p2;
+		const unsigned char *p1;
+
+		for (i = 0, p1 = data, p2 = (unsigned char*)correct_words;
+		     i < 16; i++, p2 += 4) {
+			p2[3] = *p1++;
+			p2[2] = *p1++;
+			p2[1] = *p1++;
+			p2[0] = *p1++;
+		}
+	}
+#else
+	memcpy(correct_words, data, 64);
+#endif
+
+
+#define OP(a, b, c, d, s, T)				\
+	do {						\
+		a += FF (b, c, d) + (*cwp++) + T; 	\
+		a = rol(a, s);				\
+		a += b;					\
+	} while (0)
+
+	/* Before we start, one word about the strange constants.
+	   They are defined in RFC 1321 as
+
+	   T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+	 */
+
+	/* Round 1.  */
+	OP (A, B, C, D,  7, 0xd76aa478);
+	OP (D, A, B, C, 12, 0xe8c7b756);
+	OP (C, D, A, B, 17, 0x242070db);
+	OP (B, C, D, A, 22, 0xc1bdceee);
+	OP (A, B, C, D,  7, 0xf57c0faf);
+	OP (D, A, B, C, 12, 0x4787c62a);
+	OP (C, D, A, B, 17, 0xa8304613);
+	OP (B, C, D, A, 22, 0xfd469501);
+	OP (A, B, C, D,  7, 0x698098d8);
+	OP (D, A, B, C, 12, 0x8b44f7af);
+	OP (C, D, A, B, 17, 0xffff5bb1);
+	OP (B, C, D, A, 22, 0x895cd7be);
+	OP (A, B, C, D,  7, 0x6b901122);
+	OP (D, A, B, C, 12, 0xfd987193);
+	OP (C, D, A, B, 17, 0xa679438e);
+	OP (B, C, D, A, 22, 0x49b40821);
+
+#undef OP
+#define OP(f, a, b, c, d, k, s, T)  \
+	do {							\
+		a += f (b, c, d) + correct_words[k] + T;	\
+		a = rol(a, s);					\
+		a += b; 					\
+	} while (0)
+
+	/* Round 2.  */
+	OP (FG, A, B, C, D,  1,  5, 0xf61e2562);
+	OP (FG, D, A, B, C,  6,  9, 0xc040b340);
+	OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
+	OP (FG, B, C, D, A,  0, 20, 0xe9b6c7aa);
+	OP (FG, A, B, C, D,  5,  5, 0xd62f105d);
+	OP (FG, D, A, B, C, 10,  9, 0x02441453);
+	OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
+	OP (FG, B, C, D, A,  4, 20, 0xe7d3fbc8);
+	OP (FG, A, B, C, D,  9,  5, 0x21e1cde6);
+	OP (FG, D, A, B, C, 14,  9, 0xc33707d6);
+	OP (FG, C, D, A, B,  3, 14, 0xf4d50d87);
+	OP (FG, B, C, D, A,  8, 20, 0x455a14ed);
+	OP (FG, A, B, C, D, 13,  5, 0xa9e3e905);
+	OP (FG, D, A, B, C,  2,  9, 0xfcefa3f8);
+	OP (FG, C, D, A, B,  7, 14, 0x676f02d9);
+	OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
+
+	/* Round 3.  */
+	OP (FH, A, B, C, D,  5,  4, 0xfffa3942);
+	OP (FH, D, A, B, C,  8, 11, 0x8771f681);
+	OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
+	OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
+	OP (FH, A, B, C, D,  1,  4, 0xa4beea44);
+	OP (FH, D, A, B, C,  4, 11, 0x4bdecfa9);
+	OP (FH, C, D, A, B,  7, 16, 0xf6bb4b60);
+	OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
+	OP (FH, A, B, C, D, 13,  4, 0x289b7ec6);
+	OP (FH, D, A, B, C,  0, 11, 0xeaa127fa);
+	OP (FH, C, D, A, B,  3, 16, 0xd4ef3085);
+	OP (FH, B, C, D, A,  6, 23, 0x04881d05);
+	OP (FH, A, B, C, D,  9,  4, 0xd9d4d039);
+	OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
+	OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
+	OP (FH, B, C, D, A,  2, 23, 0xc4ac5665);
+
+	/* Round 4.  */
+	OP (FI, A, B, C, D,  0,  6, 0xf4292244);
+	OP (FI, D, A, B, C,  7, 10, 0x432aff97);
+	OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
+	OP (FI, B, C, D, A,  5, 21, 0xfc93a039);
+	OP (FI, A, B, C, D, 12,  6, 0x655b59c3);
+	OP (FI, D, A, B, C,  3, 10, 0x8f0ccc92);
+	OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
+	OP (FI, B, C, D, A,  1, 21, 0x85845dd1);
+	OP (FI, A, B, C, D,  8,  6, 0x6fa87e4f);
+	OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
+	OP (FI, C, D, A, B,  6, 15, 0xa3014314);
+	OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
+	OP (FI, A, B, C, D,  4,  6, 0xf7537e82);
+	OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
+	OP (FI, C, D, A, B,  2, 15, 0x2ad7d2bb);
+	OP (FI, B, C, D, A,  9, 21, 0xeb86d391);
+
+	/* Put checksum in context given as argument.  */
+	ctx->A += A;
+	ctx->B += B;
+	ctx->C += C;
+	ctx->D += D;
+}
+
+
+
+/* The routine updates the message-digest context to
+ * account for the presence of each of the characters inBuf[0..inLen-1]
+ * in the message whose digest is being computed.
+ */
+static void
+md5_update(MD5_CONTEXT *hd, const unsigned char *inbuf, size_t inlen)
+{
+	if (hd->count == 64) { /* flush the buffer */
+		transform( hd, hd->buf );
+		hd->count = 0;
+		hd->nblocks++;
+	}
+	if (!inbuf)
+		return;
+	if (hd->count) {
+		for (; inlen && hd->count < 64; inlen--)
+			hd->buf[hd->count++] = *inbuf++;
+		md5_update(hd, NULL, 0);
+		if (!inlen)
+			return;
+	}
+
+	while (inlen >= 64) {
+		transform(hd, inbuf);
+		hd->count = 0;
+		hd->nblocks++;
+		inlen -= 64;
+		inbuf += 64;
+	}
+
+	for (; inlen && hd->count < 64; inlen--)
+		hd->buf[hd->count++] = *inbuf++;
+}
+
+
+
+/* The routine final terminates the message-digest computation and
+ * ends with the desired message digest in mdContext->digest[0...15].
+ * The handle is prepared for a new MD5 cycle.
+ * Returns 16 bytes representing the digest.
+ */
+
+static void
+do_final(MD5_CONTEXT *hd)
+{
+	u32 t, msb, lsb;
+	unsigned char *p;
+
+	md5_update(hd, NULL, 0); /* flush */
+
+	msb = 0;
+	t = hd->nblocks;
+	if ((lsb = t << 6) < t) /* multiply by 64 to make a byte count */
+		msb++;
+	msb += t >> 26;
+	t = lsb;
+	if ((lsb = t + hd->count) < t) /* add the count */
+		msb++;
+	t = lsb;
+	if ((lsb = t << 3) < t) /* multiply by 8 to make a bit count */
+		msb++;
+	msb += t >> 29;
+
+	if (hd->count < 56) { /* enough room */
+		hd->buf[hd->count++] = 0x80; /* pad */
+		while(hd->count < 56)
+			hd->buf[hd->count++] = 0;  /* pad */
+	} else { /* need one extra block */
+		hd->buf[hd->count++] = 0x80; /* pad character */
+		while (hd->count < 64)
+			hd->buf[hd->count++] = 0;
+		md5_update(hd, NULL, 0);  /* flush */
+		memset(hd->buf, 0, 56); /* fill next block with zeroes */
+	}
+
+	/* append the 64 bit count */
+	hd->buf[56] = lsb      ;
+	hd->buf[57] = lsb >>  8;
+	hd->buf[58] = lsb >> 16;
+	hd->buf[59] = lsb >> 24;
+	hd->buf[60] = msb      ;
+	hd->buf[61] = msb >>  8;
+	hd->buf[62] = msb >> 16;
+	hd->buf[63] = msb >> 24;
+	transform(hd, hd->buf);
+
+	p = hd->buf;
+#ifdef BIG_ENDIAN_HOST
+#define X(a) do { *p++ = hd->a      ; *p++ = hd->a >> 8;      \
+		  *p++ = hd->a >> 16; *p++ = hd->a >> 24; } while(0)
+#else /* little endian */
+	/*#define X(a) do { *(u32*)p = hd->##a ; p += 4; } while(0)*/
+	/* Unixware's cpp doesn't like the above construct so we do it his way:
+	 * (reported by Allan Clark) */
+#define X(a) do { *(u32*)p = (*hd).a ; p += 4; } while(0)
+#endif
+	X(A);
+	X(B);
+	X(C);
+	X(D);
+#undef X
+	hd->finalized = 1;
+}
+
+static void
+md5_final(unsigned char *digest, MD5_CONTEXT *ctx)
+{
+	if (!ctx->finalized)
+		do_final(ctx);
+	memcpy(digest, ctx->buf, 16);
+}
+
+/*
+ * Creates a MD5 digest in hex fomrat (lowercase letters) from the
+ * string S.  hextdigest but be buffer of at lease 33 bytes!
+ */
+static void
+md5_hex_digest(char *hexdigest, const unsigned char *s)
+{
+	int i;
+	MD5_CONTEXT context;
+	unsigned char digest[16];
+
+	md5_init(&context);
+	md5_update(&context, s, strlen((gchar *) s));
+	md5_final(digest, &context);
+
+	for (i = 0; i < 16; i++)
+		sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+}
+
+
+/*
+** Function: md5_hmac
+** taken from the file rfc2104.txt
+** written by Martin Schaaf <mascha@ma-scha.de>
+*/
+static void
+md5_hmac(unsigned char *digest,
+	 const unsigned char* text, int text_len,
+	 const unsigned char* key, int key_len)
+{
+	MD5_CONTEXT context;
+	unsigned char k_ipad[64];    /* inner padding -
+				      * key XORd with ipad
+				      */
+	unsigned char k_opad[64];    /* outer padding -
+				      * key XORd with opad
+				      */
+	/* unsigned char tk[16]; */
+	int i;
+
+	/* start out by storing key in pads */
+	memset(k_ipad, 0, sizeof k_ipad);
+	memset(k_opad, 0, sizeof k_opad);
+	if (key_len > 64) {
+		/* if key is longer than 64 bytes reset it to key=MD5(key) */
+		MD5_CONTEXT tctx;
+
+		md5_init(&tctx);
+		md5_update(&tctx, key, key_len);
+		md5_final(k_ipad, &tctx);
+		md5_final(k_opad, &tctx);
+	} else {
+		memcpy(k_ipad, key, key_len);
+		memcpy(k_opad, key, key_len);
+	}
+
+	/*
+	 * the HMAC_MD5 transform looks like:
+	 *
+	 * MD5(K XOR opad, MD5(K XOR ipad, text))
+	 *
+	 * where K is an n byte key
+	 * ipad is the byte 0x36 repeated 64 times
+	 * opad is the byte 0x5c repeated 64 times
+	 * and text is the data being protected
+	 */
+
+
+	/* XOR key with ipad and opad values */
+	for (i = 0; i < 64; i++) {
+		k_ipad[i] ^= 0x36;
+		k_opad[i] ^= 0x5c;
+	}
+
+	/*
+	 * perform inner MD5
+	 */
+	md5_init(&context);		      /* init context for 1st
+					       * pass */
+	md5_update(&context, k_ipad, 64);     /* start with inner pad */
+	md5_update(&context, text, text_len); /* then text of datagram */
+	md5_final(digest, &context);	      /* finish up 1st pass */
+	/*
+	 * perform outer MD5
+	 */
+	md5_init(&context);		      /* init context for 2nd
+					       * pass */
+	md5_update(&context, k_opad, 64);     /* start with outer pad */
+	md5_update(&context, digest, 16);     /* then results of 1st
+					       * hash */
+	md5_final(digest, &context);	      /* finish up 2nd pass */
+}
+
+
+static void
+md5_hex_hmac(char *hexdigest,
+	     const unsigned char* text, int text_len,
+	     const unsigned char* key, int key_len)
+{
+	unsigned char digest[16];
+	int i;
+
+	md5_hmac(digest, text, text_len, key, key_len);
+	for (i = 0; i < 16; i++)
+		sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+}
+
+void caldav_md5_hex_digest(char *hexdigest, const unsigned char *s) {
+	md5_hex_digest(hexdigest, s);
+}
+
+void caldav_md5_hex_hmac(char *hexdigest,
+                  const unsigned char* text, int text_len,
+                  const unsigned char* key, int key_len) {
+	md5_hex_hmac(hexdigest, text, text_len, key, key_len);
+}
diff --git a/src/.svn/text-base/md5.h.svn-base b/src/.svn/text-base/md5.h.svn-base
new file mode 100644
index 0000000..7605214
--- /dev/null
+++ b/src/.svn/text-base/md5.h.svn-base
@@ -0,0 +1,52 @@
+/**
+ * md5.h - MD5 Message-Digest Algorithm
+ *	Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+ *
+ * according to the definition of MD5 in RFC 1321 from April 1992.
+ * NOTE: This is *not* the same file as the one from glibc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 3, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _MD5_HDR_
+#define _MD5_HDR_
+
+#include <glib.h>
+
+/**
+ * @typedef u32
+ * Kept this typedef for compatibility reasons
+ */
+#ifndef HAVE_U32_TYPEDEF
+	#undef u32
+	typedef guint32 u32;
+	#define HAVE_U32_TYPEDEF
+#endif
+
+typedef struct {  /* Hmm, should be private */
+    u32 A,B,C,D;
+    u32  nblocks;
+    unsigned char buf[64];
+    int  count;
+    int  finalized;
+} MD5_CONTEXT;
+
+void caldav_md5_hex_digest(char *hexdigest, const unsigned char *s);
+
+void caldav_md5_hex_hmac(char *hexdigest,
+                  const unsigned char* text, int text_len,
+                  const unsigned char* key, int key_len);
+
+#endif /* _MD5_HDR_ */
+
diff --git a/src/.svn/text-base/modify-caldav-object.c.svn-base b/src/.svn/text-base/modify-caldav-object.c.svn-base
new file mode 100644
index 0000000..f42f3ae
--- /dev/null
+++ b/src/.svn/text-base/modify-caldav-object.c.svn-base
@@ -0,0 +1,296 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "modify-caldav-object.h"
+#include "lock-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VEVENT\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static char* search_tail =
+"</C:prop-filter>"
+"      </C:comp-filter>"
+"    </C:comp-filter>"
+"  </C:filter>"
+"</C:calendar-query>";
+
+/**
+ * Function for modifying an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_modify(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean result = FALSE;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * collation is not supported by ICalendar.
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	g_free(search);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+				if (url) {
+					int lock = 0;
+					caldav_error lock_error;
+	
+					file = g_strdup(etag);
+					g_free(etag);
+					etag = g_strdup_printf("If-Match: %s", file);
+					g_free(file);
+					http_header = curl_slist_append(http_header, etag);
+					g_free(etag);
+					http_header = curl_slist_append(http_header,
+						"Content-Type: text/calendar; charset=\"utf-8\"");
+					http_header = curl_slist_append(http_header, "Expect:");
+					http_header = curl_slist_append(
+									http_header, "Transfer-Encoding:");
+					if (settings->use_locking)
+						LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+					else
+						LOCKSUPPORT = FALSE;
+					if (LOCKSUPPORT) {
+						lock_token = caldav_lock_object(url, settings, &lock_error);
+						if (lock_token) {
+							http_header = curl_slist_append(
+								http_header, g_strdup_printf(
+										"If: (%s)", lock_token));
+						}
+						/*
+						 * If error code is 423 (Resource is LOCKED) bail out
+						 */
+						else if (lock_error.code == 423) {
+							lock = -1;
+						}
+						/*
+						 * If error code is 501 (Not implemented) we continue
+						 * hoping for the best.
+						 */
+						else if (lock_error.code == 501) {
+							lock_token = g_strdup("");
+						}
+						else {
+							lock = -1;
+						}
+					}
+					if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+						curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+						curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+						curl_easy_setopt(curl, CURLOPT_POSTFIELDS, settings->file);
+						curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 
+									strlen(settings->file));
+						curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+						curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+						curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+						curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+						res = curl_easy_perform(curl);
+						if (LOCKSUPPORT && lock_token) {
+							caldav_unlock_object(
+									lock_token, url, settings, &lock_error);
+						}
+					}
+					g_free(url);
+					g_free(lock_token);
+					if (res != 0 || lock < 0) {
+						/* Is this a lock_error don't change error*/
+						if (lock == 0 || lock_error.code == 423) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+						}
+						else {
+							error->code = lock_error.code;
+							error->str = g_strdup(lock_error.str);
+						}
+						result = TRUE;
+						g_free(settings->file);
+						settings->file = NULL;
+					}
+					else {
+						long code;
+						res = curl_easy_getinfo(
+									curl, CURLINFO_RESPONSE_CODE, &code);
+						if (code != 204) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+							result = TRUE;
+						}
+					}
+					curl_slist_free_all(http_header);
+				}
+				else {
+					error->code = code;
+					if (chunk.memory)
+						error->str = g_strdup(chunk.memory);
+					else
+						error->str = g_strdup("No object found");
+					result = TRUE;
+				}
+			}
+			else {
+				/* 
+				 * No object found on server. Posible synchronization
+				 * problem or a server side race condition
+				 */
+				error->code = 409;
+				error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/.svn/text-base/modify-caldav-object.h.svn-base b/src/.svn/text-base/modify-caldav-object.h.svn-base
new file mode 100644
index 0000000..39ac718
--- /dev/null
+++ b/src/.svn/text-base/modify-caldav-object.h.svn-base
@@ -0,0 +1,34 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __MODIFY_CALDAV_OBJECT_H__
+#define __MODIFY_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for modifying an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_modify(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/.svn/text-base/options-caldav-server.c.svn-base b/src/.svn/text-base/options-caldav-server.c.svn-base
new file mode 100644
index 0000000..1d97d04
--- /dev/null
+++ b/src/.svn/text-base/options-caldav-server.c.svn-base
@@ -0,0 +1,135 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "options-caldav-server.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * Function for getting supported options from a server.
+ * @param curl A pointer to an initialized CURL instance
+ * @param settings struct containing the URL to the server. If authentication
+ * is required prior to making the call the credentials must be available
+ * via CURLOPT_USERPWD before calling.
+ * @param result A pointer to a struct _response. If test is true
+ * this variable can be NULL. Caller is responsible for freeing associated
+ * memory.
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @param test if this is true response will be whether the server
+ * represented by the URL is a CalDAV collection or not.
+ * @return FALSE in case of error, TRUE otherwise.
+ */
+gboolean caldav_getoptions(CURL* curl, caldav_settings* settings, response* result,
+		caldav_error* error, gboolean test) {
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	gboolean enabled = FALSE;
+
+	if (! curl)
+		return FALSE;
+
+	if (!error) {
+		error = (caldav_error *) malloc(sizeof(struct _caldav_error));
+		memset(error, '\0', sizeof(struct _caldav_error));
+	}
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "OPTIONS");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res == 0) {
+		gchar* head;
+		head = get_response_header("DAV", headers.memory, TRUE);
+		if (head && strstr(head, "calendar-access") != NULL) {
+			enabled = TRUE;
+			if (! test) {
+				result->msg = g_strdup(
+						get_response_header("Allow", headers.memory, FALSE));
+			}
+		}
+		else {
+			long code;
+			res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+			if (code == 200) {
+				error->code = -1;
+				error->str = g_strdup("URL is not a CalDAV resource");
+			}
+			else {
+				error->code = -1 * code;
+				error->str = g_strdup(headers.memory);
+			}
+		}
+		g_free(head);
+	}
+	else if (
+		(res == CURLE_SSL_CONNECT_ERROR ||
+		 CURLE_PEER_FAILED_VERIFICATION ||
+		 CURLE_SSL_ENGINE_NOTFOUND ||
+		 CURLE_SSL_ENGINE_SETFAILED ||
+		 CURLE_SSL_CERTPROBLEM ||
+		 CURLE_SSL_CIPHER ||
+		 CURLE_SSL_CACERT ||
+		 CURLE_SSL_CACERT_BADFILE ||
+		 CURLE_SSL_CRL_BADFILE ||
+		 CURLE_SSL_ISSUER_ERROR) && settings->usehttps) {
+		error->code = -2;
+		error->str = g_strdup(error_buf);
+	}
+	else if (res == CURLE_COULDNT_RESOLVE_HOST) {
+		error->code = -3;
+		error->str = g_strdup("Could not resolve host");
+	}
+	else if (res == CURLE_COULDNT_CONNECT) {
+		error->code = -4;
+		error->str = g_strdup("Unable to connect");
+	}
+	else {
+		error->code = -1;
+		error->str = g_strdup("URL is not a CalDAV resource");
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "GET");
+	return enabled;
+}
diff --git a/src/.svn/text-base/options-caldav-server.h.svn-base b/src/.svn/text-base/options-caldav-server.h.svn-base
new file mode 100644
index 0000000..d17cba2
--- /dev/null
+++ b/src/.svn/text-base/options-caldav-server.h.svn-base
@@ -0,0 +1,43 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __OPTIONS_CALDAV_SERVER_H__
+#define __OPTIONS_CALDAV_SERVER_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for getting supported options from a server.
+ * @param curl A pointer to an initialized CURL instance
+ * @param settings struct containing the URL to the server. If authentication
+ * is required prior to making the call the credentials must be available
+ * via CURLOPT_USERPWD before calling.
+ * @param result A pointer to a struct _response. If test is true
+ * this variable can be NULL. Caller is responsible for freeing associated
+ * memory.
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @param test if this is true response will be whether the server
+ * represented by the URL is a CalDAV collection or not.
+ * @return FALSE in case of error, TRUE otherwise.
+ */
+gboolean caldav_getoptions(CURL* curl, caldav_settings* settings, response* result,
+				caldav_error* error, gboolean test);
+
+#endif
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..59d3126
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,53 @@
+AUTOMAKE_OPTIONS = gnu
+
+INCLUDES = @CURL_CFLAGS@ @GLIB_CFLAGS@ \
+		   -I$(top_srcdir) -I$(top_builddir)
+
+if STATIC_LINK
+noinst_LTLIBRARIES = libcaldav.la
+endif
+
+if DYNAMIC_LINK
+lib_LTLIBRARIES = libcaldav.la
+endif
+
+libcaldav_la_LDFLAGS = -version-info @LIBVERSION@
+
+libcaldav_la_SOURCES = \
+			caldav.h \
+			caldav.c \
+			add-caldav-object.c \
+			add-caldav-object.h \
+			delete-caldav-object.c \
+			delete-caldav-object.h \
+			modify-caldav-object.c \
+			modify-caldav-object.h \
+			get-caldav-report.c \
+			get-caldav-report.h \
+			get-display-name.c \
+			get-display-name.h \
+			caldav-utils.c \
+			caldav-utils.h \
+			md5.c \
+			md5.h \
+			options-caldav-server.c \
+			options-caldav-server.h \
+			lock-caldav-object.c \
+			lock-caldav-object.h \
+			get-freebusy-report.c \
+			get-freebusy-report.h
+
+libcaldav_includedir=$(includedir)/libcaldav-@VERSION@
+libcaldav_include_HEADERS = caldav.h
+
+noinst_HEADERS = \
+			add-caldav-object.h \
+			delete-caldav-object.h \
+			modify-caldav-object.h \
+			get-caldav-report.h \
+			caldav-utils.h
+
+libcaldav_la_LIBADD = \
+			@CURL_LIBS@ \
+			@GLIB_LIBS@
+
diff --git a/src/Makefile.in b/src/Makefile.in
new file mode 100644
index 0000000..5803fc2
--- /dev/null
+++ b/src/Makefile.in
@@ -0,0 +1,649 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
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+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
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+	"$(DESTDIR)$(libcaldav_includedir)"
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+am_libcaldav_la_OBJECTS = caldav.lo add-caldav-object.lo \
+	delete-caldav-object.lo modify-caldav-object.lo \
+	get-caldav-report.lo get-display-name.lo caldav-utils.lo \
+	md5.lo options-caldav-server.lo lock-caldav-object.lo \
+	get-freebusy-report.lo
+libcaldav_la_OBJECTS = $(am_libcaldav_la_OBJECTS)
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+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
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+AUTOMAKE_OPTIONS = gnu
+INCLUDES = @CURL_CFLAGS@ @GLIB_CFLAGS@ \
+		   -I$(top_srcdir) -I$(top_builddir)
+
+@STATIC_LINK_TRUE@noinst_LTLIBRARIES = libcaldav.la
+@DYNAMIC_LINK_TRUE@lib_LTLIBRARIES = libcaldav.la
+libcaldav_la_LDFLAGS = -version-info @LIBVERSION@
+libcaldav_la_SOURCES = \
+			caldav.h \
+			caldav.c \
+			add-caldav-object.c \
+			add-caldav-object.h \
+			delete-caldav-object.c \
+			delete-caldav-object.h \
+			modify-caldav-object.c \
+			modify-caldav-object.h \
+			get-caldav-report.c \
+			get-caldav-report.h \
+			get-display-name.c \
+			get-display-name.h \
+			caldav-utils.c \
+			caldav-utils.h \
+			md5.c \
+			md5.h \
+			options-caldav-server.c \
+			options-caldav-server.h \
+			lock-caldav-object.c \
+			lock-caldav-object.h \
+			get-freebusy-report.c \
+			get-freebusy-report.h
+
+libcaldav_includedir = $(includedir)/libcaldav-@VERSION@
+libcaldav_include_HEADERS = caldav.h
+noinst_HEADERS = \
+			add-caldav-object.h \
+			delete-caldav-object.h \
+			modify-caldav-object.h \
+			get-caldav-report.h \
+			caldav-utils.h
+
+libcaldav_la_LIBADD = \
+			@CURL_LIBS@ \
+			@GLIB_LIBS@
+
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+
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+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu src/Makefile
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+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
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+	done
+
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+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+
+clean-noinstLTLIBRARIES:
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+	@list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
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+install-libcaldav_includeHEADERS: $(libcaldav_include_HEADERS)
+	@$(NORMAL_INSTALL)
+	test -z "$(libcaldav_includedir)" || $(MKDIR_P) "$(DESTDIR)$(libcaldav_includedir)"
+	@list='$(libcaldav_include_HEADERS)'; test -n "$(libcaldav_includedir)" || list=; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
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+	while read files; do \
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+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(libcaldav_includedir)" || exit $$?; \
+	done
+
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+	@list='$(libcaldav_include_HEADERS)'; test -n "$(libcaldav_includedir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	test -n "$$files" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(libcaldav_includedir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(libcaldav_includedir)" && rm -f $$files
+
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+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(libcaldav_includedir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-noinstLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-libcaldav_includeHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES \
+	uninstall-libcaldav_includeHEADERS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libLTLIBRARIES clean-libtool clean-noinstLTLIBRARIES \
+	ctags distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-libLTLIBRARIES \
+	install-libcaldav_includeHEADERS install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags uninstall uninstall-am uninstall-libLTLIBRARIES \
+	uninstall-libcaldav_includeHEADERS
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/add-caldav-object.c b/src/add-caldav-object.c
new file mode 100644
index 0000000..68a4377
--- /dev/null
+++ b/src/add-caldav-object.c
@@ -0,0 +1,132 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "add-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * Function for adding a new event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_add(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* url;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: text/calendar; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "If-None-Match: *");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* tmp = random_file_name(settings->file);
+	gchar* s = rebuild_url(settings, NULL);
+	if (g_str_has_suffix(s, "/")) {
+		url = g_strdup_printf("%slibcaldav-%s.ics", s, tmp);
+	}
+	else {
+		url = g_strdup_printf("%s/libcaldav-%s.ics", s, tmp);
+	}
+	g_free(s);
+	g_free(tmp);
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	tmp = g_strdup(settings->file);
+	g_free(settings->file);
+	settings->file = verify_uid(tmp);
+	g_free(tmp);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, settings->file);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(settings->file));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 201) {
+			error->str = g_strdup(chunk.memory);
+			error->code = code;
+			result = TRUE;
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/add-caldav-object.h b/src/add-caldav-object.h
new file mode 100644
index 0000000..0756e74
--- /dev/null
+++ b/src/add-caldav-object.h
@@ -0,0 +1,35 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __ADD_CALDAV_OBJECT_H__
+#define __ADD_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for adding a new event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_add(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/caldav-utils.c b/src/caldav-utils.c
new file mode 100644
index 0000000..aa3f02e
--- /dev/null
+++ b/src/caldav-utils.c
@@ -0,0 +1,729 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "caldav-utils.h"
+#include "md5.h"
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <curl/curl.h>
+#include <ctype.h>
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param text
+ * @param stream
+ * @param ptr
+ * @param size
+ * @param nohex
+ */
+void dump(const char* text, FILE* stream, char* ptr, size_t size, char nohex) {
+	size_t i;
+	size_t c;
+
+	unsigned int width=0x10;
+
+	if(nohex)
+		/* without the hex output, we can fit more on screen */
+		width = 0x40;
+	fprintf(stream, "%s, %zd bytes (0x%zx)\n", text, size, size);
+	for(i=0; i<size; i+= width) {
+		fprintf(stream, "%04zx: ", i);
+		if(!nohex) {
+			/* hex not disabled, show it */
+			for(c = 0; c < width; c++) {
+				if(i+c < size)
+					fprintf(stream, "%02x ", ptr[i+c]);
+				else
+					fputs("   ", stream);
+			}
+		}
+		for(c = 0; (c < width) && (i+c < size); c++) {
+		/* check for 0D0A; if found, skip past and start a new line of output */
+			if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
+				i+=(c+2-width);
+				break;
+			}
+			fprintf(stream, "%c",(ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
+			/* check again for 0D0A, to avoid an extra \n if it's at width */
+			if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
+				i+=(c+3-width);
+				break;
+			}
+		}
+		fputc('\n', stream); /* newline */
+	}
+	fflush(stream);
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param handle
+ * @param type
+ * @param data
+ * @param size
+ * @param userp
+ * @return
+ */
+int my_trace(CURL* handle, curl_infotype type, char* data, size_t size, void* userp) {
+	struct config_data* config = (struct config_data *)userp;
+	const char* text;
+	(void)handle; /* prevent compiler warning */
+
+	switch (type) {
+		case CURLINFO_TEXT:
+			fprintf(stderr, "== Info: %s", data);
+		default: /* in case a new one is introduced to shock us */
+			return 0;
+		case CURLINFO_HEADER_OUT:
+			text = "=> Send header";
+			break;
+		case CURLINFO_DATA_OUT:
+			text = "=> Send data";
+			break;
+		case CURLINFO_SSL_DATA_OUT:
+			text = "=> Send SSL data";
+			break;
+		case CURLINFO_HEADER_IN:
+			text = "<= Recv header";
+			break;
+		case CURLINFO_DATA_IN:
+			text = "<= Recv data";
+			break;
+		case CURLINFO_SSL_DATA_IN:
+			text = "<= Recv SSL data";
+			break;
+	}
+	dump(text, stderr, data, size, config->trace_ascii);
+	return 0;
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @return void* to memory region
+ */
+static void* myrealloc(void* ptr, size_t size) {
+/* There might be a realloc() out there that doesn't like reallocing
+ * NULL pointers, so we take care of it here
+ * */
+	if(ptr)
+		return realloc(ptr, size);
+	else
+		return malloc(size);
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data) {
+	size_t realsize = size * nmemb;
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+	mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);
+	
+	if (mem->memory) {
+		memcpy(&(mem->memory[mem->size]), ptr, realsize);
+		mem->size += realsize;
+		mem->memory[mem->size] = 0;
+	}
+	return realsize;
+}
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteHeaderCallback(void* ptr, size_t size, size_t nmemb, void* data) {
+	size_t realsize = size * nmemb;
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+	mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);
+	
+	if (mem->memory) {
+		memcpy(&(mem->memory[mem->size]), ptr, realsize);
+		mem->size += realsize;
+		mem->memory[mem->size] = 0;
+	}
+	return realsize;
+}
+
+/*
+size_t ReadMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data){
+	struct MemoryStruct* mem = (struct MemoryStruct *)data;
+
+	memcpy(ptr, mem->memory, mem->size);
+	return mem->size;
+}
+*/
+
+/**
+ * Initialize caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void init_caldav_settings(caldav_settings* settings) {
+	settings->username = NULL;
+	settings->password = NULL;
+	settings->url = NULL;
+	settings->file = NULL;
+	settings->usehttps = FALSE;
+	settings->custom_cacert = NULL;
+	settings->verify_ssl_certificate = TRUE;
+	settings->debug = FALSE;
+	settings->trace_ascii = TRUE;
+	settings->ACTION = UNKNOWN;
+	settings->start = 0;
+	settings->end = 0;
+}
+
+/**
+ * Free memory assigned to caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void free_caldav_settings(caldav_settings* settings) {
+	if (settings->username) {
+		g_free(settings->username);
+		settings->username = NULL;
+	}
+	if (settings->password) {
+		g_free(settings->password);
+		settings->password = NULL;
+	}
+	if (settings->url) {
+		g_free(settings->url);
+		settings->url = NULL;
+	}
+	if (settings->file) {
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	if (settings->custom_cacert) {
+		g_free(settings->custom_cacert);
+		settings->custom_cacert = NULL;
+	}
+	settings->verify_ssl_certificate = TRUE;
+	settings->usehttps = FALSE;
+	settings->debug = FALSE;
+	settings->trace_ascii = TRUE;
+	settings->ACTION = UNKNOWN;
+	settings->start = 0;
+	settings->end = 0;
+}
+
+static gchar* place_after_hostname(const gchar* start, const gchar* stop) {
+	gchar* newpos = NULL;
+	gchar* pos = (gchar *) stop;
+	gboolean digit = TRUE;
+	
+	if (pos && stop && strcmp(start, pos) != 0) {
+		while (*pos != ':' && strcmp(start, pos) != 0)
+			--pos;
+		if (pos > start) {
+			gchar* tmp = (gchar *) pos + 1;
+			/* is pos++ a port number */
+			while (*tmp != '/' && digit) {
+				if (isdigit(*tmp) != 0) {
+					digit = TRUE;
+					tmp++;
+				}
+				else
+					digit = FALSE;
+			}
+			if (digit) {
+				/* pos was a port number */
+				while (*pos != '@' && strcmp(start, pos) != 0)
+					--pos;
+				if (strcmp(start, pos) != 0)
+					newpos = pos;
+			}
+			else {
+				while (*pos != '@' && pos != stop)
+					pos++;
+				if (pos != stop)
+					newpos = pos;
+			}
+		}
+		else {
+			/* is a username present */
+			gchar* tmp = NULL;
+			while (*pos != '/' && pos != stop) {
+				if (*pos == '@')
+					tmp = pos;
+				pos++;
+			}
+			if (tmp && pos != stop)
+				newpos = tmp;
+		}
+	}
+	return newpos;
+}
+
+/**
+ * Parse URL
+ * @param settings @see caldav_settings
+ * @param url String containing URL to collection
+ */
+void parse_url(caldav_settings* settings, const char* url) {
+	char* start;
+	char* pos;
+	char* end;
+	char* login;
+
+	login = pos = end = start = NULL;
+	if (!url)
+		return;
+	if ((pos = strstr(url, "//")) != NULL) {
+		/* Does the URL use https ?*/
+		if (!g_ascii_strncasecmp(url,"https",5) && settings->usehttps == FALSE) {
+				settings->usehttps=TRUE;
+		}
+		start = g_strdup(&(*(pos + 2)));
+		if ((pos = place_after_hostname(start, strrchr(start, '\0') - 1)) != NULL) {
+			/* username and/or password present */
+			login = g_strndup(start, pos - start);
+			end = pos;
+			if ((pos = strrchr(login, ':')) != NULL) {
+				/* both username and password is present */
+				settings->username = g_strndup(login, pos - login);
+				settings->password = g_strdup(++pos);
+			}
+			else {
+				/* only username present */
+				settings->username = g_strdup(login);
+				settings->password = NULL;
+			}
+			g_free(login);
+			settings->url = g_strdup(++end);
+		}
+		else {
+			/* no username or password present */
+			settings->url = g_strdup(start);
+			settings->username = NULL;
+			settings->password = NULL;
+		}
+		g_free(start);
+	}
+}
+
+/**
+ * Find a specific HTTP header from last request
+ * @param header HTTP header to search for
+ * @param headers String of HTTP headers from last request
+ * @param lowcase Should string be returned in all lower case.
+ * @return The header found or NULL
+ */
+#define MAX_TOKENS 2
+gchar* get_response_header(
+		const char* header, gchar* headers, gboolean lowcase) {
+	gchar* line;
+	gchar* head = NULL;
+	gchar* oldhead = NULL;
+	gchar** buf;
+	gchar* header_list;
+	gchar* saveptr;
+
+	header_list = g_strdup(headers);
+	line = strtok_r(header_list, "\r\n", &saveptr);
+	if (line != NULL) {
+		do  {
+			buf = g_strsplit(line, ":", MAX_TOKENS);
+			if (buf[1] != NULL) {
+				if (g_ascii_strcasecmp(buf[0], header) == 0) {
+					if (head) {
+						if (strcmp(head, buf[1]) != 0) {
+							oldhead = head;
+							head = g_strconcat(head, ", ", buf[1], NULL);
+							g_free(oldhead);
+						}
+					}
+					else
+						head = g_strdup(buf[1]);
+					if (head)
+						g_strstrip(head);
+				}
+			}
+			g_strfreev(buf);
+		} while ((line = strtok_r(NULL, "\r\n", &saveptr)) != NULL);
+	}
+	g_free(header_list);
+	if (head)
+		return (lowcase) ? g_ascii_strdown(head, -1) : head;
+	else
+		return NULL;
+}
+
+static const char* VCAL_HEAD =
+"BEGIN:VCALENDAR\r\n"
+"PRODID:-//CalDAV Calendar//NONSGML libcaldav//EN\r\n"
+"VERSION:2.0\r\n";
+static const char* VCAL_FOOT = "END:VCALENDAR";
+
+/**
+ * Parse response from CalDAV server. Internal function.
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @param wrap Is this the final parsing or just a part
+ * @param recursive Stop after first match or not
+ * @return the parsed result
+ */
+static gchar* parse_caldav_report_wrap(
+		char* report, const char* element, const char* type,
+			gboolean wrap, gboolean recursive) {
+	char* pos;
+	char* start;
+	char* object;
+	char* tmp_report;
+	char* tmp;
+	gchar* response;
+	gchar* begin_type;
+	gchar* end_type;
+	gboolean keep_going = TRUE;
+
+	begin_type = g_strdup_printf("BEGIN:%s", type);
+	end_type = g_strdup_printf("END:%s", type);
+	pos = start = object = response = NULL;
+	tmp_report = g_strdup(report);
+	while ((pos = strstr(tmp_report, element)) != NULL && keep_going) {
+		pos = strchr(pos, '>');
+		if (!pos) {
+			break;
+		}
+		pos = &(*(pos + 1));
+		pos = strstr(pos, begin_type);
+		if (!pos) {
+			break;
+		}
+		object = &(*(pos + strlen(begin_type)));
+		object = g_strchug(object);
+		start = g_strdup(object);
+		if ((pos = strstr(start, end_type)) == NULL) {
+			g_free(start);
+			break;
+		}
+		char end_not_found = 1;
+		while (end_not_found == 1) {
+			if (strstr(pos+1, end_type) < strstr(pos+1, element)) {
+				if (strstr(pos+1, end_type) != NULL) {
+					pos = strstr(pos+1, end_type);
+				}
+				else {
+					end_not_found = 0;
+				}
+			}
+			else {
+				end_not_found = 0;
+			}
+		}
+		object = g_strndup(start, strlen(start) - strlen(pos));
+		if (response) {
+			tmp = g_strdup(response);
+			g_free(response);
+			response = g_strdup_printf("%s%s\r\n%s%s\r\n",
+				tmp, begin_type, object, end_type);
+			g_free(tmp);
+		}
+		else {
+			if (wrap)
+				response = g_strdup_printf("%s%s\r\n%s%s\r\n",
+					VCAL_HEAD, begin_type, object, end_type);
+			else
+				response = g_strdup_printf("%s\r\n%s%s\r\n",
+					begin_type, object, end_type);
+		}
+		if (recursive) {
+			pos = strchr(pos, '>');
+			g_free(tmp_report);
+			tmp_report = g_strdup(&(*(pos + 1)));
+		}
+		else {
+			keep_going = FALSE;
+		}
+		g_free(start);
+		g_free(object);
+	}
+	g_free(tmp_report);
+	g_free(begin_type);
+	g_free(end_type);
+	if (wrap)
+		if (response) {
+			object = g_strdup(response);
+			g_free(response);
+			response = g_strdup_printf("%s%s", object, VCAL_FOOT);
+			g_free(object);
+		}
+	return response;
+}
+
+/**
+ * Parse response from CalDAV server
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @return the parsed result
+ */
+gchar* parse_caldav_report(char* report, const char* element, const char* type) {
+	gchar* response = NULL;
+	gchar* timezone = NULL;
+	gchar* temp = NULL;
+
+	if (!report || !element || !type)
+		return NULL;
+	/* test for VTIMEZONE.
+	 * Only the first found will be used and this will then
+	 * be the time zone for the entire report
+	 */
+	timezone = parse_caldav_report_wrap(
+			report, element, "VTIMEZONE", FALSE, FALSE);
+	if (timezone) {
+			response = g_strdup_printf("%s%s", VCAL_HEAD, timezone);
+			g_free(timezone);
+			temp = parse_caldav_report_wrap(report, element, type, FALSE, TRUE);
+			if (temp) {
+				gchar* tmp = g_strdup(response);
+				g_free(response);
+				response = g_strdup_printf("%s%s%s", tmp, temp, VCAL_FOOT);
+				g_free(tmp);
+				g_free(temp);
+			}
+			else {
+				g_free(response);
+				return NULL;
+			}
+	}
+	else
+		response = parse_caldav_report_wrap(report, element, type, TRUE, TRUE);
+	return response;
+}
+
+/**
+ * Convert a time_t variable to CalDAV DateTime
+ * @param time a specific date and time
+ * @return the CalDAV DateTime
+ */
+gchar* get_caldav_datetime(time_t* time) {
+	struct tm *current;
+	gchar* datetime;
+
+	current = localtime(time);
+	datetime = g_strdup_printf("%d%.2d%.2dT%.2d%.2d%.2dZ",
+		current->tm_year + 1900, current->tm_mon + 1, current->tm_mday,
+		current->tm_hour, current->tm_min, current->tm_sec);
+	return datetime;
+}
+
+/**
+ * Create a random text string, using MD5. @see caldav_md5_hex_digest()
+ * @param text some text to randomize
+ * @return MD5 hash of text
+ */
+gchar* random_file_name(gchar* text) {
+	unsigned char* name;
+	gchar md5sum[33];
+
+	name = (unsigned char *) g_strdup(text);
+	caldav_md5_hex_digest(md5sum, name);
+	g_free(name);
+	return g_strdup(md5sum);
+}
+
+/**
+ * Does the event contain a UID element or not. If not add it.
+ * @param object A specific event
+ * @return event, eventually added UID
+ */
+gchar* verify_uid(gchar* object) {
+	gchar* uid;
+	gchar* newobj;
+	gchar* pos;
+
+	newobj = g_strdup(object);
+	uid = get_response_header("uid", object, TRUE);
+	if (!uid) {
+		object = g_strdup(newobj);
+		g_free(newobj);
+		pos = strstr(object, "END:VEVENT");
+		newobj = g_strndup(object, strlen(object) - strlen(pos));
+		newobj = g_strchomp(newobj);
+		uid = random_file_name(object);
+		gchar*tmp = g_strdup(newobj);
+		g_free(newobj);
+		newobj = g_strdup_printf("%s\r\nUID:libcaldav-%s@tempuri.org\r\n%s",
+					tmp, uid, pos);
+		g_free(uid);
+		g_free(tmp);
+		g_free(object);
+	}
+	else
+		g_free(uid);
+	/*uid = g_strdup(newobj);
+	g_free(newobj);*/
+	g_strchomp(newobj);
+	/*g_free(uid);*/
+	return newobj;
+}
+
+/**
+ * Fetch a URL from a XML element
+ * @param text String
+ * @return URL
+ */
+#define ELEM_HREF "href>"
+gchar* get_url(gchar* text) {
+	gchar* pos;
+	gchar* url = NULL;
+
+	if ((pos = strstr(text, ELEM_HREF)) == NULL)
+		return url;
+	pos = &(*(pos + strlen(ELEM_HREF)));
+	url = g_strndup(pos, strlen(pos) - strlen(strchr(pos, '<')));
+	return url;
+}
+
+/**
+ * Fetch any element from XML
+ * @param text String
+ * @param tag The element to look for
+ * @return element
+ */
+gchar* get_tag(const gchar* tag, gchar* text) {
+	gchar *pos;
+	gchar* res = NULL;
+	gchar* the_tag = NULL;
+
+	/*printf("%s\n", text);*/
+	the_tag = g_strdup_printf("<%s>", tag);
+	if ((pos = strstr(text, the_tag)) == NULL) {
+		g_free(the_tag);
+		return res;
+	}
+	pos = &(*(pos + strlen(the_tag)));
+	res = g_strndup(pos, strlen(pos) - strlen(strchr(pos, '<')));
+	g_free(the_tag);
+	return res;	
+}
+
+/**
+ * Fetch the etag element from XML
+ * @param text String
+ * @return etag
+ */
+#define ELEM_ETAG "getetag"
+gchar* get_etag(gchar* text) {
+	gchar* etag = NULL;
+	
+	etag = get_tag(ELEM_ETAG, text);
+	/* Maybe namespace prefixed */
+	if (!etag) {
+		etag = get_tag("D:getetag", text);
+	}
+	return etag;
+}
+
+/**
+ * Fetch host from URL
+ * @param url URL
+ * @return host
+ */
+gchar* get_host(gchar* url) {
+	gchar** buf;
+	gchar* result = NULL;
+
+	buf = g_strsplit(url, "/", 2);
+	if (buf[0]) {
+		result = g_strdup(buf[0]);
+	}
+	g_strfreev(buf);
+	return result;
+}
+
+/**
+ * rebuild a raw URL with https if needed from the settings
+ * @param settings caldav_settings
+ * @param uri URI to use instead of base
+ * @return URL
+ */
+
+gchar* rebuild_url(caldav_settings* settings, gchar* uri){
+    gchar* url = NULL;
+    gchar* mystr = NULL;
+	if (settings->usehttps) {
+		mystr = "https://";
+	} else {
+		mystr = "http://";
+	}
+	if (uri)
+		url = g_strdup_printf("%s%s", mystr, uri);
+	else
+    	url = g_strdup_printf("%s%s", mystr,settings->url);
+
+	return url;
+}
+
+/**
+ * Prepare a curl connection
+ * @param settings caldav_settings
+ * @return CURL
+ */
+CURL* get_curl(caldav_settings* setting) {
+	CURL* curl;
+	gchar* userpwd = NULL;
+	gchar* url = NULL;
+
+	curl = curl_easy_init();
+	if (curl) {
+		if (setting->username) {
+			if (setting->password)
+				userpwd = g_strdup_printf("%s:%s",
+					setting->username, setting->password);
+			else
+				userpwd = g_strdup_printf("%s",	setting->username);
+			curl_easy_setopt(curl, CURLOPT_USERPWD, userpwd);
+			g_free(userpwd);
+		}
+		if (setting->verify_ssl_certificate)
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2);
+		else {
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
+			curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
+		}
+		if (setting->custom_cacert)
+			curl_easy_setopt(curl, CURLOPT_CAINFO, setting->custom_cacert);
+		curl_easy_setopt(curl, CURLOPT_USERAGENT, __CALDAV_USERAGENT);
+		url = rebuild_url(setting, NULL);
+		curl_easy_setopt(curl, CURLOPT_URL, url);
+		g_free(url);
+	}
+	return (curl) ? curl : NULL;
+}
diff --git a/src/caldav-utils.h b/src/caldav-utils.h
new file mode 100644
index 0000000..02c84d7
--- /dev/null
+++ b/src/caldav-utils.h
@@ -0,0 +1,221 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __CALDAV_UTILS_H__
+#define __CALDAV_UTILS_H__
+
+#include <glib.h>
+#include <stdlib.h>
+#include <curl/curl.h>
+#include "caldav.h"
+
+/**
+ * @typedef struct _CALDAV_SETTINGS caldav_settings
+ * A pointer to a struct _CALDAV_SETTINGS
+ */
+typedef struct _CALDAV_SETTINGS caldav_settings;
+
+/**
+ * @struct _CALDAV_SETTINGS
+ * A struct used to exchange all user input between various parts
+ * of the library
+ */
+struct _CALDAV_SETTINGS {
+	gchar* username;
+	gchar* password;
+	gchar* url;
+	gchar* file;
+	gboolean usehttps;
+	gboolean verify_ssl_certificate;
+	gchar* custom_cacert;
+	gboolean debug;
+	gboolean use_locking;
+	char trace_ascii;
+	CALDAV_ACTION ACTION;
+	time_t start;
+	time_t end;
+};
+
+/**
+ * @typedef struct MemoryStruct memory_ptr
+ * A pointer to a struct MemoryStruct
+ */
+typedef struct MemoryStruct memory_ptr;
+
+/**
+ * @struct MemoryStruct
+ * Used to hold messages between the CalDAV server and the library
+ */
+struct MemoryStruct {
+	char *memory;
+	size_t size;
+};
+
+/** @struct config_data
+ * Used to exchange user options to the library
+ */
+struct config_data {
+	char trace_ascii;
+};
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param text
+ * @param stream
+ * @param ptr
+ * @param size
+ * @param nohex
+ */
+void dump(const char* text, FILE* stream, char* ptr, size_t size, char nohex);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param handle
+ * @param type
+ * @param data
+ * @param size
+ * @param userp
+ * @return
+ */
+int my_trace(CURL* handle, curl_infotype type, char* data, size_t size, void* userp);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @return void* to memory region
+ */
+size_t WriteMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data);
+
+/**
+ * This function is burrowed from the libcurl documentation
+ * @param ptr
+ * @param size
+ * @param nmemb
+ * @param data
+ * @return number of written bytes
+ */
+size_t WriteHeaderCallback(void* ptr, size_t size, size_t nmemb, void* data);
+
+/*size_t ReadMemoryCallback(void* ptr, size_t size, size_t nmemb, void* data);*/
+
+/**
+ * Initialize caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void init_caldav_settings(caldav_settings* settings);
+
+/**
+ * Free momory assigned to caldav settings structure.
+ * @param settings @see caldav_settings
+ */
+void free_caldav_settings(caldav_settings* settings);
+
+/**
+ * Parse URL
+ * @param settings @see caldav_settings
+ * @param url String containing URL to collection
+ */
+void parse_url(caldav_settings* settings, const char* url);
+
+/**
+ * Find a specific HTTP header from last request
+ * @param header HTTP header to search for
+ * @param headers String of HTTP headers from last request
+ * @param lowcase Should string be returned in all lower case.
+ * @return The header found or NULL
+ */
+gchar* get_response_header(
+		const char* header, gchar* headers, gboolean lowcase);
+
+/**
+ * Parse response from CalDAV server
+ * @param report Response from server
+ * @param element XML element to find
+ * @param type VCalendar element to find
+ * @return the parsed result
+ */
+gchar* parse_caldav_report(char* report, const char* element, const char* type);
+
+/**
+ * Convert a time_t variable to CalDAV DateTime
+ * @param time a specific date and time
+ * @return the CalDAV DateTime
+ */
+gchar* get_caldav_datetime(time_t* time);
+
+/**
+ * Create a random text string, using MD5. @see caldav_md5_hex_digest()
+ * @param text some text to randomize
+ * @return MD5 hash of text
+ */
+gchar* random_file_name(gchar* text);
+
+/**
+ * Does the event contain a UID element or not. If not add it.
+ * @param object A specific event
+ * @return event, eventually added UID
+ */
+gchar* verify_uid(gchar* object);
+
+/**
+ * Fetch a URL from a XML element
+ * @param text String
+ * @return URL
+ */
+gchar* get_url(gchar* text);
+
+/**
+ * Fetch host from URL
+ * @param url URL
+ * @return host
+ */
+gchar* get_host(gchar* url);
+
+/**
+ * Fetch the etag element from XML
+ * @param text String
+ * @return etag
+ */
+gchar* get_etag(gchar* text);
+
+/**
+ * Fetch any element from XML
+ * @param text String
+ * @return element
+ */
+gchar* get_tag(const gchar* tag, gchar* text);
+
+
+
+/**
+ * rebuild a raw URL with https if needed from the settings
+ * @param settings caldav_settings
+ * @return URL
+ */
+gchar* rebuild_url(caldav_settings* setting, gchar* uri);
+
+/**
+ * Prepare a curl connection
+ * @param settings caldav_settings
+ * @return CURL
+ */
+CURL* get_curl(caldav_settings* setting);
+
+#endif
diff --git a/src/caldav.c b/src/caldav.c
new file mode 100644
index 0000000..9e2b0af
--- /dev/null
+++ b/src/caldav.c
@@ -0,0 +1,995 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "caldav.h"
+#include "caldav-utils.h"
+#include "get-caldav-report.h"
+#include "add-caldav-object.h"
+#include "delete-caldav-object.h"
+#include "modify-caldav-object.h"
+#include "get-display-name.h"
+#include "options-caldav-server.h"
+#include "get-freebusy-report.h"
+#include <curl/curl.h>
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void init_runtime(runtime_info* info) {
+    if (! info)
+		return;
+    if (! info->error)
+		info->error = g_new0(caldav_error, 1);
+    if (! info->options) {
+		info->options = g_new0(debug_curl, 1);
+		info->options->trace_ascii = 1;
+		info->options->debug = 0;
+		info->options->verify_ssl_certificate = TRUE;
+		info->options->use_locking = TRUE;
+		info->options->custom_cacert = NULL;
+    }
+}
+
+/**
+ * @param curl An instance of libcurl.
+ * @param settings Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. URL is part of the structure. [http://][username:password@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return FALSE (zero) mens URL does not reference a CalDAV calendar
+ * resource. TRUE if the URL does reference a CalDAV calendar resource.
+ */
+static gboolean test_caldav_enabled(CURL* curl,
+				    caldav_settings* settings,
+				    caldav_error* error) {
+	return caldav_getoptions(curl, settings, NULL, error, TRUE);
+}
+
+/* 
+ * @param settings An instance of caldav_settings. @see caldav_settings
+ * @return TRUE if there was an error. Error can be in libcurl, in libcaldav,
+ * or an error related to the CalDAV protocol.
+ */
+static gboolean make_caldav_call(caldav_settings* settings,
+				 runtime_info* info) {
+	CURL* curl;
+	gboolean result = FALSE;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	curl = get_curl(settings);
+	if (!curl) {
+		info->error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+	if (!test_caldav_enabled(curl, settings, info->error)) {
+		g_free(settings->file);
+		settings->file = NULL;
+		curl_easy_cleanup(curl);
+		return TRUE;
+	}
+	curl_easy_cleanup(curl);
+	switch (settings->ACTION) {
+		case GETALL: result = caldav_getall(settings, info->error); break;
+		case GET: result = caldav_getrange(settings, info->error); break;
+		case GETALLTASKS: result = caldav_tasks_getall(settings, info->error); break;
+		case GETTASKS: result = caldav_tasks_getrange(settings, info->error); break;
+		case ADD: result = caldav_add(settings, info->error); break;
+		case DELETE: result = caldav_delete(settings, info->error); break;
+		case MODIFY: result = caldav_modify(settings, info->error); break;
+		case DELETETASKS: result = caldav_tasks_delete(settings, info->error); break;
+		case MODIFYTASKS: result = caldav_tasks_modify(settings, info->error); break;
+		case GETCALNAME: result = caldav_getname(settings, info->error); break;
+		case FREEBUSY: result = caldav_freebusy(settings, info->error); break;
+		default: break;
+	}
+	return result;
+}
+
+/**
+ * Function for adding a new event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_add_object(const char* object,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = ADD;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for deleting an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = DELETE;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for modifying an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = MODIFY;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting a collection of events determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_object(response *result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GET;
+	settings.start = start;
+	settings.end = end;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting all events from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETALL;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for deleting a task.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = DELETETASKS;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for modifying a task.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+	settings.file = g_strdup(object);
+	settings.ACTION = MODIFYTASKS;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting a collection of tasks determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_get_object(response *result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETTASKS;
+	settings.start = start;
+	settings.end = end;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting all tasks from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETALLTASKS;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function for getting the stored display name for the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_displayname(response* result,
+				       const char* URL,
+				       runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = GETCALNAME;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function to test wether a calendar resource is CalDAV enabled or not.
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @result 0 (zero) means no CalDAV support, otherwise CalDAV support
+ * detechted.
+ */
+int caldav_enabled_resource(const char* URL, runtime_info* info) {
+	CURL* curl;
+	caldav_settings settings;
+	struct config_data data;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	init_caldav_settings(&settings);
+
+	parse_url(&settings, URL);
+	curl = get_curl(&settings);
+	if (!curl) {
+		info->error->code = -1;
+		info->error->str = g_strdup("Could not initialize libcurl");
+		settings.file = NULL;
+		return TRUE;
+	}
+
+	if (info->options->trace_ascii)
+		data.trace_ascii = 1;
+	else
+		data.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+
+	if (info->options->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gboolean res = test_caldav_enabled(curl, &settings, info->error);
+	free_caldav_settings(&settings);
+	curl_easy_cleanup(curl);
+	return (res && (info->error->code == 0 || info->error->code == 200)) ? 1 : 0;
+}
+
+/**
+ * Function for getting free/busy information.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_freebusy(response *result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info) {
+	caldav_settings settings;
+	CALDAV_RESPONSE caldav_response;
+
+	g_return_val_if_fail(info != NULL, TRUE);
+
+	init_runtime(info);
+	if (!result) {
+		result = malloc(sizeof(response *));
+		memset(result, '\0', sizeof(response *));
+	}
+	init_caldav_settings(&settings);
+	settings.ACTION = FREEBUSY;
+	settings.start = start;
+	settings.end = end;
+	if (info->options->debug)
+		settings.debug = TRUE;
+	else
+		settings.debug = FALSE;
+	if (info->options->trace_ascii)
+		settings.trace_ascii = 1;
+	else
+		settings.trace_ascii = 0;
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+	parse_url(&settings, URL);
+	gboolean res = make_caldav_call(&settings, info);
+	if (res) {
+		result->msg = NULL;
+		if (info->error->code > 0) {
+			switch (info->error->code) {
+				case 403: caldav_response = FORBIDDEN; break;
+				case 409: caldav_response = CONFLICT; break;
+				case 423: caldav_response = LOCKED; break;
+				case 501: caldav_response = NOTIMPLEMENTED; break;
+				default: caldav_response = CONFLICT; break;
+			}
+		}
+		else {
+			/* fall-back to conflicting state */
+			caldav_response = CONFLICT;
+		}
+	}
+	else {
+		result->msg = g_strdup(settings.file);
+		caldav_response = OK;
+	}
+	free_caldav_settings(&settings);
+	return caldav_response;
+}
+
+/**
+ * Function which supports sending various options inside the library.
+ * @param curl_options A struct debug_curl. See debug_curl.
+ */
+void caldav_set_options(debug_curl curl_options) {
+}
+
+/** 
+ * @deprecated Function to call in case of errors.
+ * Caller provides a pointer to a local caldav_error structure.
+ * Caldav_get_error will initialize pointer if NULL.
+ * Caller is responsible for freeing returned memory.
+ * After the first call the internal error buffer is reset.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ * @return An initialized caldav_error pointer to memory where error
+ * messages can be found from the last call to the library.
+ */
+caldav_error* caldav_get_error(caldav_error* lib_error) {
+	if (!lib_error) {
+		lib_error = g_new0(caldav_error, 1);
+	}
+	return lib_error;
+}
+
+/** 
+ * Function for freeing memory for a previous initialization of a
+ * caldav_error. @see caldav_get_error()
+ * Caller provides a pointer to a local caldav_error structure.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ */
+void caldav_free_error(caldav_error* lib_error) {
+	if (lib_error->str)
+		g_free(lib_error->str);
+	g_free(lib_error);
+	lib_error = NULL;
+}
+
+/**
+ * Function to call to get a list of supported CalDAV options for a server
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @result A list of available options or NULL in case of any error.
+ */
+char** caldav_get_server_options(const char* URL, runtime_info* info) {
+	CURL* curl;
+	caldav_settings settings;
+	response server_options;
+	gchar** option_list = NULL;
+	gchar** tmp;
+	gboolean res = FALSE;
+
+	g_return_val_if_fail(info != NULL, NULL);
+
+	init_runtime(info);
+	tmp = option_list = NULL;
+	init_caldav_settings(&settings);
+
+	parse_url(&settings, URL);
+	curl = get_curl(&settings);
+	if (!curl) {
+		info->error->code = -1;
+		info->error->str = g_strdup("Could not initialize libcurl");
+		settings.file = NULL;
+		return NULL;
+	}
+	if (info->options->use_locking)
+		settings.use_locking = 1;
+	else
+		settings.use_locking = 0;
+
+	res = caldav_getoptions(curl, &settings, &server_options, info->error, FALSE);
+	if (res) {
+		if (server_options.msg) {
+			option_list = g_strsplit(server_options.msg, ", ", 0);
+			tmp = &(*(option_list));
+			while (*tmp) {
+				g_strstrip(*tmp++);
+			}
+		}
+	}
+	free_caldav_settings(&settings);
+	curl_easy_cleanup(curl);
+	return (option_list) ? option_list : NULL;
+}
+
+/**
+ * Function for getting an initialized runtime_info structure
+ * @return runtime_info. @see runtime_info
+ */
+runtime_info* caldav_get_runtime_info() {
+	runtime_info* rt_info;
+	
+	rt_info = g_new0(runtime_info, 1);
+	rt_info->error = g_new0(caldav_error, 1);
+	rt_info->options = g_new0(debug_curl, 1);
+	
+	return rt_info;
+}
+
+/**
+ * Function for freeing memory for a previous initialization of an info
+ * structure
+ * @param info Address to a pointer to a runtime_info structure. @see 
+ * runtime_info
+ */
+void caldav_free_runtime_info(runtime_info** info) {
+    runtime_info* ri;
+
+    if (*info) {
+		ri = *info;
+		if (ri->error) {
+		    if (ri->error->str)
+			g_free(ri->error->str);
+		    g_free(ri->error);
+		    ri->error = NULL;
+		}
+		if (ri->options) {
+		    if (ri->options->custom_cacert)
+			g_free(ri->options->custom_cacert);
+		    g_free(ri->options);
+		    ri->options = NULL;
+		}
+		g_free(ri);
+		*info = ri = NULL;
+    }
+}
+
+/**
+ * Function for getting an initialized response structure
+ * @return response. @see _response
+ */
+response* caldav_get_response() {
+	response* r;
+	
+	r = g_new0(response, 1);
+	
+	return r;
+}
+
+/**
+ * Function for freeing memory for a previous initialization of an response
+ * structure
+ * @param info Address to a pointer to a response structure. @see 
+ * _response
+ */
+void caldav_free_response(response** resp) {
+	response* r;
+
+	if (*resp) {
+		r = *resp;
+		if (r->msg)
+			g_free(r->msg);
+		g_free(r);
+		*resp = r = NULL;
+	}
+}
diff --git a/src/caldav.h b/src/caldav.h
new file mode 100644
index 0000000..5734404
--- /dev/null
+++ b/src/caldav.h
@@ -0,0 +1,407 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/**
+ * @file caldav.h
+ * @brief interface to the caldav library.
+ * The library conforms to RFC4791. For further information follow this
+ * link http://www.ietf.org/rfc/rfc4791.txt
+ */
+
+/** 
+ * @mainpage
+ * This document is the documentation for the public interface to libcaldav.
+ * If you want to study the implementation look for the developers API.
+ *
+ * The libray and documentation is Copyright (c) 2008 Michael Rasmussen
+ * (mir@datanom.net)
+ *
+ * License for the source code.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * License for the documentation.
+ *
+ * Permission is granted to copy, distribute and/or modify this document
+ * under the terms of the GNU Free Documentation License, Version 1.2
+ * or any later version published by the Free Software Foundation;
+ * with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
+ * Texts.
+ */
+
+#ifndef __CALDAV_H__
+#define __CALDAV_H__
+
+#include <time.h>
+
+/* For debug purposes */
+/**
+ * @typedef struct debug_curl
+ * A struct used to set internal options in the library
+ */
+typedef struct {
+  int		trace_ascii; /** @var int trace_ascii
+					 	  * 0 or 1
+					 	  */
+  int		debug;       /** @var int debug
+					 	  * 0 or 1
+					 	  */
+  int		verify_ssl_certificate;
+  int		use_locking;
+  char*		custom_cacert; 
+} debug_curl;
+
+/**
+ * @typedef struct _caldav_error caldav_error
+ * Pointer to a caldav_error structure
+ */
+typedef struct _caldav_error caldav_error;
+
+/**
+ * @struct _caldav_error
+ * A struct for storing error codes and messages
+ */
+struct _caldav_error {
+	long code; /**
+				* @var long code
+				* if < 0 internal error > 0 CalDAV protocol error.
+				*/
+	char* str; /** @var char* str
+				* For storing human readable error message
+				*/
+};
+
+/**
+ * @typedef struct runtime_info
+ * Pointer to a runtime structure holding debug and error information
+ */
+typedef struct {
+    caldav_error*   error;
+    debug_curl*	    options;
+} runtime_info;
+
+/* CalDAV is defined in RFC4791 */
+
+/* Buffer to hold response */
+/**
+ * @typedef struct _response response
+ * Pointer to a _response structure
+ */
+typedef struct _response response;
+
+/**
+ * @struct _response
+ * A struct used for returning messages from the library to users
+ */
+struct _response {
+	char* msg; /** @var char* msg
+				* String for storing response
+				*/
+};
+
+/**
+ * @enum CALDAV_ACTION specifies supported CalDAV actions.
+ * UNKNOWN. An unknown action.
+ * ADD. Add a CalDAV calendar object.
+ * DELETE. Delete a CalDAV calendar object.
+ * MODIFY. Modify a CalDAV calendar object.
+ * GET. Get one or more CalDAV calendar object(s).
+ * GETALL. Get all CalDAV calendar objects.
+ */
+typedef enum {
+	UNKNOWN,
+	ADD,
+	DELETE,
+	FREEBUSY,
+	MODIFY,
+	GET,
+	GETALL,
+	GETCALNAME,
+	ISCALDAV,
+	OPTIONS,
+	DELETETASKS,
+	MODIFYTASKS,
+	GETTASKS,
+	GETALLTASKS,
+} CALDAV_ACTION;
+
+/**
+ * @enum CALDAV_RESPONSE specifies CalDAV error states.
+ * OK (HTTP 200). Request was satisfied.
+ * FORBIDDEN (HTTP 403). Access not allowed. Dont repeat request.
+ * CONFLICT (HTTP 409). Conflict between current state of CalDAV collection
+ * and request. Client must solve the conflict and then resend request.
+ * LOCKED (HTTP 423). Locking failed.
+ */
+typedef enum {
+	OK,
+	FORBIDDEN,
+	CONFLICT,
+	LOCKED,
+	NOTIMPLEMENTED
+} CALDAV_RESPONSE;
+
+
+#ifndef __CALDAV_USERAGENT
+#define __CALDAV_USERAGENT "libcurl-agent/0.1"
+#endif
+
+
+/**
+ * Function for adding a new event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_add_object(const char* object,
+				  const char* URL,
+				  runtime_info* info);
+
+/**
+ * Function for deleting an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for modifying an event.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for getting a collection of events determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start for range. Included in search.
+ * @param end time_t variable specifying end for range. Included in search.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_object(response* result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info);
+
+/**
+ * Function for getting all events from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for deleting a task.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_delete_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for modifying a task.
+ * @param object Appointment following ICal format (RFC2445). Receiver is
+ * responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_modify_object(const char* object,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for getting a collection of tasks determined by time range.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start for range. Included in search.
+ * @param end time_t variable specifying end for range. Included in search.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_get_object(response* result,
+				  time_t start,
+				  time_t end,
+				  const char* URL,
+				  runtime_info* info);
+
+/**
+ * Function for getting all tasks from the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_tasks_getall_object(response* result,
+				     const char* URL,
+				     runtime_info* info);
+
+/**
+ * Function for getting the stored display name for the collection.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_displayname(response* result,
+				       const char* URL,
+				       runtime_info* info);
+
+/**
+ * Function to test wether a calendar resource is CalDAV enabled or not.
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @result 0 (zero) means no CalDAV support, otherwise CalDAV support
+ * detechted.
+ */
+int caldav_enabled_resource(const char* URL, runtime_info* info);
+
+/**
+ * Function for getting free/busy information.
+ * @param result A pointer to struct _response where the result is to stored.
+ * @see response. Caller is responsible for freeing the memory.
+ * @param start time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param end time_t variable specifying start and end for range. Both
+ * are included in range.
+ * @param URL Defines CalDAV resource. Receiver is responsible for freeing
+ * the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @return Ok, FORBIDDEN, or CONFLICT. @see CALDAV_RESPONSE
+ */
+CALDAV_RESPONSE caldav_get_freebusy(response *result,
+				  					time_t start,
+				  					time_t end,
+				  					const char* URL,
+				  					runtime_info* info);
+
+/** 
+ * @deprecated Always returns an initialized empty caldav_error
+ * Function to call in case of errors.
+ * Caller provides a pointer to a local caldav_error structure.
+ * Caldav_get_error will initialize pointer if NULL.
+ * Caller is responsible for freeing returned memory.
+ * After the first call the internal error buffer is reset.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ * @return An initialized caldav_error pointer to memory where error
+ * messages can be found from the last call to the library.
+ */
+caldav_error* caldav_get_error(caldav_error* lib_error);
+
+/** 
+ * Function for freeing memory for a previous initialization of a
+ * caldav_error. @see caldav_get_error()
+ * Caller provides a pointer to a local caldav_error structure.
+ * @param lib_error A pointer to a struct _caldav_error. @see _caldav_error
+ */
+void caldav_free_error(caldav_error* lib_error);
+
+/* Setting various options in library */
+
+/**
+ * @deprecated Does nothing
+ * Function which supports sending various options inside the library.
+ * @param curl_options A struct debug_curl. See debug_curl.
+ */
+void caldav_set_options(debug_curl curl_options);
+
+/**
+ * Function to call to get a list of supported CalDAV options for a server
+ * @param URL Defines CalDAV resource. Receiver is responsible for
+ * freeing the memory. [http://][username[:password]@]host[:port]/url-path.
+ * See (RFC1738).
+ * @param info Pointer to a runtime_info structure. @see runtime_info
+ * @result A list of available options or NULL in case of any error.
+ */
+char** caldav_get_server_options(const char* URL, runtime_info* info);
+
+/**
+ * Function for getting an initialized runtime_info structure
+ * @return runtime_info. @see runtime_info
+ */
+runtime_info* caldav_get_runtime_info();
+
+/**
+ * Function for freeing memory for a previous initialization of an info
+ * structure
+ * @param info Address to a pointer to a runtime_info structure. @see 
+ * runtime_info
+ */
+void caldav_free_runtime_info(runtime_info** info);
+
+/**
+ * Function for getting an initialized response structure
+ * @return response. @see _response
+ */
+response* caldav_get_response();
+
+/**
+ * Function for freeing memory for a previous initialization of an response
+ * structure
+ * @param info Address to a pointer to a response structure. @see 
+ * _response
+ */
+void caldav_free_response(response** info);
+
+#endif
diff --git a/src/delete-caldav-object.c b/src/delete-caldav-object.c
new file mode 100644
index 0000000..9a85168
--- /dev/null
+++ b/src/delete-caldav-object.c
@@ -0,0 +1,533 @@
+/* vim: set textwidth=80 tabstop=4: */
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "delete-caldav-object.h"
+#include "lock-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VEVENT\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_tasks_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VTODO\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static char* search_tail =
+"</C:prop-filter>"
+"      </C:comp-filter>"
+"    </C:comp-filter>"
+"  </C:filter>"
+"</C:calendar-query>";
+
+/**
+ * Function for deleting an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_delete(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+	gboolean result = FALSE;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: infinity");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * ICalendar server does not support collation
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	g_free(search);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+			}
+			if (url) {
+				int lock = 0;
+				caldav_error lock_error;
+
+				file = g_strdup(etag);
+				g_free(etag);
+				etag = g_strdup_printf("If-Match: %s", file);
+				g_free(file);
+				http_header = curl_slist_append(http_header, etag);
+				g_free(etag);
+				http_header = curl_slist_append(http_header,
+					"Content-Type: text/calendar; charset=\"utf-8\"");
+				http_header = curl_slist_append(http_header, "Expect:");
+				http_header = curl_slist_append(
+								http_header, "Transfer-Encoding:");
+				http_header = curl_slist_append(http_header, "Connection: close");
+				if (settings->use_locking)
+					LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+				else
+					LOCKSUPPORT = FALSE;
+				if (LOCKSUPPORT) {
+					lock_token = caldav_lock_object(url, settings, &lock_error);
+					if (lock_token) {
+						http_header = curl_slist_append(
+							http_header, g_strdup_printf(
+									"If: (%s)", lock_token));
+					}
+					/*
+					 * If error code is 423 (Resource is LOCKED) bail out
+					 */
+					else if (lock_error.code == 423) {
+						lock = -1;
+					}
+					/*
+					 * If error code is 501 (Not implemented) we continue
+					 * hoping for the best.
+					 */
+					else if (lock_error.code == 501) {
+						lock_token = g_strdup("");
+					}
+					else {
+						lock = -1;
+					}
+				}
+				if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+					curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+					curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+					curl_easy_setopt(curl, CURLOPT_POSTFIELDS, NULL);
+					curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 0);
+					curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "DELETE");
+					curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+					curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+					curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+					res = curl_easy_perform(curl);
+					if (LOCKSUPPORT && lock_token) {
+						caldav_unlock_object(
+								lock_token, url, settings, &lock_error);
+					}
+				}
+				g_free(url);
+				g_free(lock_token);
+				if (res != 0 || lock < 0) {
+					/* Is this a lock_error don't change error*/
+					if (lock == 0 || lock_error.code == 423) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+					}
+					else {
+						error->code = lock_error.code;
+						error->str = g_strdup(lock_error.str);
+					}
+					result = TRUE;
+					g_free(settings->file);
+					settings->file = NULL;
+				}
+				else {
+					long code;
+					res = curl_easy_getinfo(
+								curl, CURLINFO_RESPONSE_CODE, &code);
+					if (code != 204) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+						result = TRUE;
+					}
+				}
+				curl_slist_free_all(http_header);
+			}
+			else {
+				error->code = code;
+				if (chunk.memory)
+					error->str = g_strdup(chunk.memory);
+				else
+					error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for deleting a task.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_delete(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+	gboolean result = FALSE;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: infinity");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * ICalendar server does not support collation
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_tasks_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	g_free(search);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+			}
+			if (url) {
+				int lock = 0;
+				caldav_error lock_error;
+
+				file = g_strdup(etag);
+				g_free(etag);
+				etag = g_strdup_printf("If-Match: %s", file);
+				g_free(file);
+				http_header = curl_slist_append(http_header, etag);
+				g_free(etag);
+				http_header = curl_slist_append(http_header,
+					"Content-Type: text/calendar; charset=\"utf-8\"");
+				http_header = curl_slist_append(http_header, "Expect:");
+				http_header = curl_slist_append(
+								http_header, "Transfer-Encoding:");
+				http_header = curl_slist_append(http_header, "Connection: close");
+				if (settings->use_locking)
+					LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+				else
+					LOCKSUPPORT = FALSE;
+				if (LOCKSUPPORT) {
+					lock_token = caldav_lock_object(url, settings, &lock_error);
+					if (lock_token) {
+						http_header = curl_slist_append(
+							http_header, g_strdup_printf(
+									"If: (%s)", lock_token));
+					}
+					/*
+					 * If error code is 423 (Resource is LOCKED) bail out
+					 */
+					else if (lock_error.code == 423) {
+						lock = -1;
+					}
+					/*
+					 * If error code is 501 (Not implemented) we continue
+					 * hoping for the best.
+					 */
+					else if (lock_error.code == 501) {
+						lock_token = g_strdup("");
+					}
+					else {
+						lock = -1;
+					}
+				}
+				if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+					curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+					curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+					curl_easy_setopt(curl, CURLOPT_POSTFIELDS, NULL);
+					curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 0);
+					curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "DELETE");
+					curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+					curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+					curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+					res = curl_easy_perform(curl);
+					if (LOCKSUPPORT && lock_token) {
+						caldav_unlock_object(
+								lock_token, url, settings, &lock_error);
+					}
+				}
+				g_free(url);
+				g_free(lock_token);
+				if (res != 0 || lock < 0) {
+					/* Is this a lock_error don't change error*/
+					if (lock == 0 || lock_error.code == 423) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+					}
+					else {
+						error->code = lock_error.code;
+						error->str = g_strdup(lock_error.str);
+					}
+					result = TRUE;
+					g_free(settings->file);
+					settings->file = NULL;
+				}
+				else {
+					long code;
+					res = curl_easy_getinfo(
+								curl, CURLINFO_RESPONSE_CODE, &code);
+					if (code != 204) {
+						error->code = code;
+						error->str = g_strdup(chunk.memory);
+						result = TRUE;
+					}
+				}
+				curl_slist_free_all(http_header);
+			}
+			else {
+				error->code = code;
+				if (chunk.memory)
+					error->str = g_strdup(chunk.memory);
+				else
+					error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
diff --git a/src/delete-caldav-object.h b/src/delete-caldav-object.h
new file mode 100644
index 0000000..cddf711
--- /dev/null
+++ b/src/delete-caldav-object.h
@@ -0,0 +1,43 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __DELETE_CALDAV_OBJECT_H__
+#define __DELETE_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for deleting an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_delete(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for deleting a task.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_delete(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/get-caldav-report.c b/src/get-caldav-report.c
new file mode 100644
index 0000000..d916259
--- /dev/null
+++ b/src/get-caldav-report.c
@@ -0,0 +1,472 @@
+/* vim: set textwidth=80 tabstop=4 smarttab: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "get-caldav-report.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the calendar query for fetching
+ * all events from collection.
+ */
+static const char* getall_request =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"
+"   <D:getetag/>"
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VEVENT\"/>"
+"   </C:comp-filter>"
+" </C:filter>"
+"</C:calendar-query>\r\n";
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual VEVENT to search for is added at runtime.
+ */
+static const char* getrange_request_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+/*"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"*/
+"<C:calendar-query xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop xmlns:D=\"DAV:\">"
+/*"   <D:getetag/>"*/
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VEVENT\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static const char* getrange_request_foot =
+"     </C:comp-filter>"
+"   </C:comp-filter>"
+" </C:filter>"
+"</C:calendar-query>\r\n";
+
+/**
+ * A static literal string containing the calendar query for fetching
+ * all tasks from collection.
+ */
+static const char* getall_tasks_request =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"
+"   <D:getetag/>"
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VTODO\"/>"
+"   </C:comp-filter>"
+" </C:filter>"
+"</C:calendar-query>\r\n";
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual VTODO to search for is added at runtime.
+ */
+static const char* getrange_tasks_request_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+/*"<C:calendar-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop>"*/
+"<C:calendar-query xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+" <D:prop xmlns:D=\"DAV:\">"
+/*"   <D:getetag/>"*/
+"   <C:calendar-data/>"
+" </D:prop>"
+" <C:filter>"
+"   <C:comp-filter name=\"VCALENDAR\">"
+"     <C:comp-filter name=\"VTODO\">";
+
+/**
+ * Function for getting all events from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getall(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, getall_request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(getall_request));
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			gchar* report;
+			report = parse_caldav_report(
+						chunk.memory, "calendar-data", "VEVENT");
+			settings->file = g_strdup(report);
+			g_free(report);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for getting all events within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getrange(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE + 1];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* request = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	request = g_strdup_printf(
+		"%s\r\n<C:time-range start=\"%s\"\r\n end=\"%s\"/>\r\n%s",
+			getrange_request_head, get_caldav_datetime(&settings->start),
+			get_caldav_datetime(&settings->end), getrange_request_foot);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(request));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		gchar* report;
+		report = parse_caldav_report(chunk.memory, "calendar-data", "VEVENT");
+		settings->file = g_strdup(report);
+		g_free(report);
+	}
+	g_free(request);
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for getting all tasks from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_getall(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, getall_tasks_request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(getall_tasks_request));
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			gchar* report;
+			report = parse_caldav_report(
+						chunk.memory, "calendar-data", "VTODO");
+			settings->file = g_strdup(report);
+			g_free(report);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for getting all events within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_getrange(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE + 1];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* request = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	request = g_strdup_printf(
+		"%s\r\n<C:time-range start=\"%s\"\r\n end=\"%s\"/>\r\n%s",
+			getrange_tasks_request_head, get_caldav_datetime(&settings->start),
+			get_caldav_datetime(&settings->end), getrange_request_foot);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(request));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		gchar* report;
+		report = parse_caldav_report(chunk.memory, "calendar-data", "VTODO");
+		settings->file = g_strdup(report);
+		g_free(report);
+	}
+	g_free(request);
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
diff --git a/src/get-caldav-report.h b/src/get-caldav-report.h
new file mode 100644
index 0000000..f769685
--- /dev/null
+++ b/src/get-caldav-report.h
@@ -0,0 +1,59 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GET_CALDAV_REPORT_H__
+#define __GET_CALDAV_REPORT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+#include <glib.h>
+
+/**
+ * Function for getting all events from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getall(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for getting all events within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getrange(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for getting all tasks from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_getall(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for getting all tasks within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_getrange(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/get-display-name.c b/src/get-display-name.c
new file mode 100644
index 0000000..8fc0ff8
--- /dev/null
+++ b/src/get-display-name.c
@@ -0,0 +1,139 @@
+/* vim: set textwidth=80 tabstop=4 smarttab: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "get-caldav-report.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the calendar query for fetching
+ * the stored display name for the collection.
+ */
+static const char* getname_request =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<D:propfind xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:displayname/>"
+"  </D:prop>"
+"</D:propfind>\r\n";
+
+/**
+ * Function for getting the display name from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getname(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 0");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, getname_request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(getname_request));
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PROPFIND");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			gchar* displayname;
+			displayname = get_tag("displayname", chunk.memory);
+			/* Maybe namespace prefixed */
+			if (!displayname) {
+				displayname = get_tag("D:displayname", chunk.memory);
+			}
+			settings->file = (displayname) ? 
+					g_strdup(displayname) : g_strdup("");
+			g_free(displayname);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/get-display-name.h b/src/get-display-name.h
new file mode 100644
index 0000000..5c80272
--- /dev/null
+++ b/src/get-display-name.h
@@ -0,0 +1,34 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GET_DISPLAY_NAME_H__
+#define __GET_DISPLAY_NAME_H__
+
+#include "caldav-utils.h"
+
+/**
+ * Function for getting the display name from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_getname(caldav_settings* settings, caldav_error* error);
+
+#endif
+
diff --git a/src/get-freebusy-report.c b/src/get-freebusy-report.c
new file mode 100644
index 0000000..f75ab92
--- /dev/null
+++ b/src/get-freebusy-report.c
@@ -0,0 +1,140 @@
+/* vim: set textwidth=80 tabstop=4 smarttab: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "get-freebusy-report.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual VEVENT to search for is added at runtime.
+ */
+static const char* getrange_request_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:free-busy-query xmlns:D=\"DAV:\""
+"                 xmlns:C=\"urn:ietf:params:xml:ns:caldav\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static const char* getrange_request_foot =
+"</C:free-busy-query>\r\n";
+
+/**
+ * Function for getting freebusy within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_freebusy(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE + 1];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* request = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	request = g_strdup_printf(
+		"%s\r\n<C:time-range start=\"%s\"\r\n end=\"%s\"/>\r\n%s",
+			getrange_request_head, get_caldav_datetime(&settings->start),
+			get_caldav_datetime(&settings->end), getrange_request_foot);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, request);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(request));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 200) {
+			error->code = code;
+			error->str = g_strdup(headers.memory);
+			result = TRUE;
+		}
+		else {
+			/*gchar* report;
+			report = parse_caldav_report(chunk.memory, "calendar-data", "VFREEBUSY");
+			settings->file = g_strdup(report);*/
+			settings->file = g_strdup(chunk.memory);
+			/*g_free(report);*/
+		}
+	}
+	g_free(request);
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_slist_free_all(http_header);
+	curl_easy_cleanup(curl);
+	return result;
+}
diff --git a/src/get-freebusy-report.h b/src/get-freebusy-report.h
new file mode 100644
index 0000000..6c52c51
--- /dev/null
+++ b/src/get-freebusy-report.h
@@ -0,0 +1,35 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GET_FREEBUSY_REPORT_H__
+#define __GET_FREEBUSY_REPORT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+#include <glib.h>
+
+/**
+ * Function for getting freebusy within a time range from collection.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_freebusy(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/lock-caldav-object.c b/src/lock-caldav-object.c
new file mode 100644
index 0000000..1ddf926
--- /dev/null
+++ b/src/lock-caldav-object.c
@@ -0,0 +1,292 @@
+/* vim: set textwidth=80 tabstop=4: */
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "lock-caldav-object.h"
+#include "options-caldav-server.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the lock query.
+ */
+static char* lock_query =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<D:lockinfo xmlns:D=\"DAV:\">"
+"  <D:lockscope><D:exclusive/></D:lockscope>"
+"  <D:locktype><D:write/></D:locktype>"
+"</D:lockinfo>";
+
+/**
+ * Function which requests a lock on a calendar resource
+ * @param URI The resource to request lock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return The Lock-Token or NULL in case of error
+ */
+gchar* caldav_lock_object(
+		gchar* URI, caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* lock_token = NULL;
+	gchar* url;
+
+	if (! caldav_lock_support(settings, error))
+		return lock_token;
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return lock_token;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Timeout: Second-300");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	if (settings->usehttps) {
+		url = g_strdup_printf("https://%s", URI);
+	} else {
+		url = g_strdup_printf("http://%s", URI);
+	}
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	g_free(url);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, lock_query);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(lock_query));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "LOCK");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 200) {
+			gchar* status = get_tag("status", chunk.memory);
+			if (status && strstr(status, "423") != NULL) {
+				error->code = 423;
+				error->str = g_strdup(status);
+			}
+			else {
+				error->code = code;
+				error->str = g_strdup(chunk.memory);
+			}
+			g_free(status);
+		}
+		else {
+			lock_token = get_response_header(
+						"Lock-Token", headers.memory, FALSE);
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return lock_token;
+}
+
+/**
+ * Function which requests to have a lock removed from a calendar resource
+ * @param lock_token A privious aquired Lock-Token
+ * @param URI The resource to request unlock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return False in case the lock could not be removed. True otherwise.
+ */
+gboolean caldav_unlock_object(gchar* lock_token, gchar* URI, 
+			caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gboolean result = FALSE;
+	gchar* url;
+
+	if (! caldav_lock_support(settings, error))
+		return result;
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header, 
+			g_strdup_printf("Lock-Token: %s", lock_token));
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	if (settings->usehttps) {
+		url = g_strdup_printf("https://%s", URI);
+	} else {
+		url = g_strdup_printf("http://%s", URI);
+	}
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	g_free(url);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "UNLOCK");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 204) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+		}
+		else {
+			result = TRUE;
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function to test whether the server supports locking or not. Searching
+ * for PROP LOCK. If LOCK is present then according to RFC4791 PROP UNLOCK
+ * must also be present.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return True if locking is supported by the server. False otherwise
+ */
+gboolean caldav_lock_support(caldav_settings* settings, caldav_error* error) {
+	gboolean found = FALSE;
+	gchar* url = NULL;
+	gchar* mystr = NULL;
+	runtime_info* info;
+	
+	info = caldav_get_runtime_info();
+	info->options->verify_ssl_certificate = settings->verify_ssl_certificate;
+	info->options->custom_cacert = g_strdup(settings->custom_cacert);
+	if (settings->usehttps) {
+		mystr =  g_strdup("https://");
+	} else {
+		mystr =  g_strdup("http://");
+	}
+	
+
+	if (settings->username && settings->password) {
+		url = g_strdup_printf("%s%s:%s@%s",
+				mystr, settings->username, settings->password, settings->url);
+	}
+	else if (settings->username) {
+		url = g_strdup_printf("%s%s@%s", 
+				mystr, settings->username, settings->url);
+	}
+	else {
+		url = g_strdup_printf("%s%s", mystr, settings->url);
+	}
+	gchar** options = caldav_get_server_options(url, info);
+	g_free(url);
+	gchar** tmp = options;
+	caldav_free_runtime_info(&info);
+	while (*options) {
+		if (strcmp(*options++, "LOCK") == 0) {
+			found = TRUE;
+			break;
+		}
+	}
+	g_strfreev(tmp);			
+	g_free(mystr);
+	return found;
+}
+
+
diff --git a/src/lock-caldav-object.h b/src/lock-caldav-object.h
new file mode 100644
index 0000000..6dd884f
--- /dev/null
+++ b/src/lock-caldav-object.h
@@ -0,0 +1,55 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __LOCK_CALDAV_OBJECT_H__
+#define __LOCK_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function which requests a lock on a calendar resource
+ * @param URI The resource to request lock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return The Lock-Token or NULL in case of error
+ */
+gchar* caldav_lock_object(
+		gchar* URI, caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function which requests to have a lock removed from a calendar resource
+ * @param lock_token A privious aquired Lock-Token
+ * @param URI The resource to request unlock on.
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return False in case the lock could not be removed. True otherwise.
+ */
+gboolean caldav_unlock_object(gchar* lock_token, gchar* URI, 
+		caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function to test whether the server supports locking or not
+ * @param settings @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return True if locking is supported by the server. False otherwise
+ */
+gboolean caldav_lock_support(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/md5.c b/src/md5.c
new file mode 100644
index 0000000..62d4b2d
--- /dev/null
+++ b/src/md5.c
@@ -0,0 +1,442 @@
+/** md5.c - MD5 Message-Digest Algorithm
+ *	Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+ *
+ * according to the definition of MD5 in RFC 1321 from April 1992.
+ * NOTE: This is *not* the same file as the one from glibc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 3, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+ * heavily modified for GnuPG by <werner.koch@guug.de>.
+ * modified again for Sylpheed by <wk@gnupg.org> 2001-02-11.
+ */
+
+
+/* Test values:
+ * ""                  D4 1D 8C D9 8F 00 B2 04  E9 80 09 98 EC F8 42 7E
+ * "a"                 0C C1 75 B9 C0 F1 B6 A8  31 C3 99 E2 69 77 26 61
+ * "abc                90 01 50 98 3C D2 4F B0  D6 96 3F 7D 28 E1 7F 72
+ * "message digest"    F9 6B 69 7D 7C B7 93 8D  52 5A 2F 31 AA F1 61 D0
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "md5.h"
+
+/****************
+ * Rotate a 32 bit integer by n bytes
+ */
+#if defined(__GNUC__) && defined(__i386__)
+static inline u32
+rol( u32 x, int n)
+{
+	__asm__("roll %%cl,%0"
+		:"=r" (x)
+		:"0" (x),"c" (n));
+	return x;
+}
+#else
+#define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
+#endif
+
+
+static void
+md5_init(MD5_CONTEXT *ctx)
+{
+	ctx->A = 0x67452301;
+	ctx->B = 0xefcdab89;
+	ctx->C = 0x98badcfe;
+	ctx->D = 0x10325476;
+
+	ctx->nblocks = 0;
+	ctx->count = 0;
+	ctx->finalized = 0;
+}
+
+/* These are the four functions used in the four steps of the MD5 algorithm
+   and defined in the RFC 1321.  The first function is a little bit optimized
+   (as found in Colin Plumbs public domain implementation).  */
+/* #define FF(b, c, d) ((b & c) | (~b & d)) */
+#define FF(b, c, d) (d ^ (b & (c ^ d)))
+#define FG(b, c, d) FF (d, b, c)
+#define FH(b, c, d) (b ^ c ^ d)
+#define FI(b, c, d) (c ^ (b | ~d))
+
+
+/****************
+ * transform n*64 bytes
+ */
+static void
+transform(MD5_CONTEXT *ctx, const unsigned char *data)
+{
+	u32 correct_words[16];
+	u32 A = ctx->A;
+	u32 B = ctx->B;
+	u32 C = ctx->C;
+	u32 D = ctx->D;
+	u32 *cwp = correct_words;
+
+#ifdef BIG_ENDIAN_HOST
+	{
+		int i;
+		unsigned char *p2;
+		const unsigned char *p1;
+
+		for (i = 0, p1 = data, p2 = (unsigned char*)correct_words;
+		     i < 16; i++, p2 += 4) {
+			p2[3] = *p1++;
+			p2[2] = *p1++;
+			p2[1] = *p1++;
+			p2[0] = *p1++;
+		}
+	}
+#else
+	memcpy(correct_words, data, 64);
+#endif
+
+
+#define OP(a, b, c, d, s, T)				\
+	do {						\
+		a += FF (b, c, d) + (*cwp++) + T; 	\
+		a = rol(a, s);				\
+		a += b;					\
+	} while (0)
+
+	/* Before we start, one word about the strange constants.
+	   They are defined in RFC 1321 as
+
+	   T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+	 */
+
+	/* Round 1.  */
+	OP (A, B, C, D,  7, 0xd76aa478);
+	OP (D, A, B, C, 12, 0xe8c7b756);
+	OP (C, D, A, B, 17, 0x242070db);
+	OP (B, C, D, A, 22, 0xc1bdceee);
+	OP (A, B, C, D,  7, 0xf57c0faf);
+	OP (D, A, B, C, 12, 0x4787c62a);
+	OP (C, D, A, B, 17, 0xa8304613);
+	OP (B, C, D, A, 22, 0xfd469501);
+	OP (A, B, C, D,  7, 0x698098d8);
+	OP (D, A, B, C, 12, 0x8b44f7af);
+	OP (C, D, A, B, 17, 0xffff5bb1);
+	OP (B, C, D, A, 22, 0x895cd7be);
+	OP (A, B, C, D,  7, 0x6b901122);
+	OP (D, A, B, C, 12, 0xfd987193);
+	OP (C, D, A, B, 17, 0xa679438e);
+	OP (B, C, D, A, 22, 0x49b40821);
+
+#undef OP
+#define OP(f, a, b, c, d, k, s, T)  \
+	do {							\
+		a += f (b, c, d) + correct_words[k] + T;	\
+		a = rol(a, s);					\
+		a += b; 					\
+	} while (0)
+
+	/* Round 2.  */
+	OP (FG, A, B, C, D,  1,  5, 0xf61e2562);
+	OP (FG, D, A, B, C,  6,  9, 0xc040b340);
+	OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
+	OP (FG, B, C, D, A,  0, 20, 0xe9b6c7aa);
+	OP (FG, A, B, C, D,  5,  5, 0xd62f105d);
+	OP (FG, D, A, B, C, 10,  9, 0x02441453);
+	OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
+	OP (FG, B, C, D, A,  4, 20, 0xe7d3fbc8);
+	OP (FG, A, B, C, D,  9,  5, 0x21e1cde6);
+	OP (FG, D, A, B, C, 14,  9, 0xc33707d6);
+	OP (FG, C, D, A, B,  3, 14, 0xf4d50d87);
+	OP (FG, B, C, D, A,  8, 20, 0x455a14ed);
+	OP (FG, A, B, C, D, 13,  5, 0xa9e3e905);
+	OP (FG, D, A, B, C,  2,  9, 0xfcefa3f8);
+	OP (FG, C, D, A, B,  7, 14, 0x676f02d9);
+	OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
+
+	/* Round 3.  */
+	OP (FH, A, B, C, D,  5,  4, 0xfffa3942);
+	OP (FH, D, A, B, C,  8, 11, 0x8771f681);
+	OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
+	OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
+	OP (FH, A, B, C, D,  1,  4, 0xa4beea44);
+	OP (FH, D, A, B, C,  4, 11, 0x4bdecfa9);
+	OP (FH, C, D, A, B,  7, 16, 0xf6bb4b60);
+	OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
+	OP (FH, A, B, C, D, 13,  4, 0x289b7ec6);
+	OP (FH, D, A, B, C,  0, 11, 0xeaa127fa);
+	OP (FH, C, D, A, B,  3, 16, 0xd4ef3085);
+	OP (FH, B, C, D, A,  6, 23, 0x04881d05);
+	OP (FH, A, B, C, D,  9,  4, 0xd9d4d039);
+	OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
+	OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
+	OP (FH, B, C, D, A,  2, 23, 0xc4ac5665);
+
+	/* Round 4.  */
+	OP (FI, A, B, C, D,  0,  6, 0xf4292244);
+	OP (FI, D, A, B, C,  7, 10, 0x432aff97);
+	OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
+	OP (FI, B, C, D, A,  5, 21, 0xfc93a039);
+	OP (FI, A, B, C, D, 12,  6, 0x655b59c3);
+	OP (FI, D, A, B, C,  3, 10, 0x8f0ccc92);
+	OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
+	OP (FI, B, C, D, A,  1, 21, 0x85845dd1);
+	OP (FI, A, B, C, D,  8,  6, 0x6fa87e4f);
+	OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
+	OP (FI, C, D, A, B,  6, 15, 0xa3014314);
+	OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
+	OP (FI, A, B, C, D,  4,  6, 0xf7537e82);
+	OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
+	OP (FI, C, D, A, B,  2, 15, 0x2ad7d2bb);
+	OP (FI, B, C, D, A,  9, 21, 0xeb86d391);
+
+	/* Put checksum in context given as argument.  */
+	ctx->A += A;
+	ctx->B += B;
+	ctx->C += C;
+	ctx->D += D;
+}
+
+
+
+/* The routine updates the message-digest context to
+ * account for the presence of each of the characters inBuf[0..inLen-1]
+ * in the message whose digest is being computed.
+ */
+static void
+md5_update(MD5_CONTEXT *hd, const unsigned char *inbuf, size_t inlen)
+{
+	if (hd->count == 64) { /* flush the buffer */
+		transform( hd, hd->buf );
+		hd->count = 0;
+		hd->nblocks++;
+	}
+	if (!inbuf)
+		return;
+	if (hd->count) {
+		for (; inlen && hd->count < 64; inlen--)
+			hd->buf[hd->count++] = *inbuf++;
+		md5_update(hd, NULL, 0);
+		if (!inlen)
+			return;
+	}
+
+	while (inlen >= 64) {
+		transform(hd, inbuf);
+		hd->count = 0;
+		hd->nblocks++;
+		inlen -= 64;
+		inbuf += 64;
+	}
+
+	for (; inlen && hd->count < 64; inlen--)
+		hd->buf[hd->count++] = *inbuf++;
+}
+
+
+
+/* The routine final terminates the message-digest computation and
+ * ends with the desired message digest in mdContext->digest[0...15].
+ * The handle is prepared for a new MD5 cycle.
+ * Returns 16 bytes representing the digest.
+ */
+
+static void
+do_final(MD5_CONTEXT *hd)
+{
+	u32 t, msb, lsb;
+	unsigned char *p;
+
+	md5_update(hd, NULL, 0); /* flush */
+
+	msb = 0;
+	t = hd->nblocks;
+	if ((lsb = t << 6) < t) /* multiply by 64 to make a byte count */
+		msb++;
+	msb += t >> 26;
+	t = lsb;
+	if ((lsb = t + hd->count) < t) /* add the count */
+		msb++;
+	t = lsb;
+	if ((lsb = t << 3) < t) /* multiply by 8 to make a bit count */
+		msb++;
+	msb += t >> 29;
+
+	if (hd->count < 56) { /* enough room */
+		hd->buf[hd->count++] = 0x80; /* pad */
+		while(hd->count < 56)
+			hd->buf[hd->count++] = 0;  /* pad */
+	} else { /* need one extra block */
+		hd->buf[hd->count++] = 0x80; /* pad character */
+		while (hd->count < 64)
+			hd->buf[hd->count++] = 0;
+		md5_update(hd, NULL, 0);  /* flush */
+		memset(hd->buf, 0, 56); /* fill next block with zeroes */
+	}
+
+	/* append the 64 bit count */
+	hd->buf[56] = lsb      ;
+	hd->buf[57] = lsb >>  8;
+	hd->buf[58] = lsb >> 16;
+	hd->buf[59] = lsb >> 24;
+	hd->buf[60] = msb      ;
+	hd->buf[61] = msb >>  8;
+	hd->buf[62] = msb >> 16;
+	hd->buf[63] = msb >> 24;
+	transform(hd, hd->buf);
+
+	p = hd->buf;
+#ifdef BIG_ENDIAN_HOST
+#define X(a) do { *p++ = hd->a      ; *p++ = hd->a >> 8;      \
+		  *p++ = hd->a >> 16; *p++ = hd->a >> 24; } while(0)
+#else /* little endian */
+	/*#define X(a) do { *(u32*)p = hd->##a ; p += 4; } while(0)*/
+	/* Unixware's cpp doesn't like the above construct so we do it his way:
+	 * (reported by Allan Clark) */
+#define X(a) do { *(u32*)p = (*hd).a ; p += 4; } while(0)
+#endif
+	X(A);
+	X(B);
+	X(C);
+	X(D);
+#undef X
+	hd->finalized = 1;
+}
+
+static void
+md5_final(unsigned char *digest, MD5_CONTEXT *ctx)
+{
+	if (!ctx->finalized)
+		do_final(ctx);
+	memcpy(digest, ctx->buf, 16);
+}
+
+/*
+ * Creates a MD5 digest in hex fomrat (lowercase letters) from the
+ * string S.  hextdigest but be buffer of at lease 33 bytes!
+ */
+static void
+md5_hex_digest(char *hexdigest, const unsigned char *s)
+{
+	int i;
+	MD5_CONTEXT context;
+	unsigned char digest[16];
+
+	md5_init(&context);
+	md5_update(&context, s, strlen((gchar *) s));
+	md5_final(digest, &context);
+
+	for (i = 0; i < 16; i++)
+		sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+}
+
+
+/*
+** Function: md5_hmac
+** taken from the file rfc2104.txt
+** written by Martin Schaaf <mascha@ma-scha.de>
+*/
+static void
+md5_hmac(unsigned char *digest,
+	 const unsigned char* text, int text_len,
+	 const unsigned char* key, int key_len)
+{
+	MD5_CONTEXT context;
+	unsigned char k_ipad[64];    /* inner padding -
+				      * key XORd with ipad
+				      */
+	unsigned char k_opad[64];    /* outer padding -
+				      * key XORd with opad
+				      */
+	/* unsigned char tk[16]; */
+	int i;
+
+	/* start out by storing key in pads */
+	memset(k_ipad, 0, sizeof k_ipad);
+	memset(k_opad, 0, sizeof k_opad);
+	if (key_len > 64) {
+		/* if key is longer than 64 bytes reset it to key=MD5(key) */
+		MD5_CONTEXT tctx;
+
+		md5_init(&tctx);
+		md5_update(&tctx, key, key_len);
+		md5_final(k_ipad, &tctx);
+		md5_final(k_opad, &tctx);
+	} else {
+		memcpy(k_ipad, key, key_len);
+		memcpy(k_opad, key, key_len);
+	}
+
+	/*
+	 * the HMAC_MD5 transform looks like:
+	 *
+	 * MD5(K XOR opad, MD5(K XOR ipad, text))
+	 *
+	 * where K is an n byte key
+	 * ipad is the byte 0x36 repeated 64 times
+	 * opad is the byte 0x5c repeated 64 times
+	 * and text is the data being protected
+	 */
+
+
+	/* XOR key with ipad and opad values */
+	for (i = 0; i < 64; i++) {
+		k_ipad[i] ^= 0x36;
+		k_opad[i] ^= 0x5c;
+	}
+
+	/*
+	 * perform inner MD5
+	 */
+	md5_init(&context);		      /* init context for 1st
+					       * pass */
+	md5_update(&context, k_ipad, 64);     /* start with inner pad */
+	md5_update(&context, text, text_len); /* then text of datagram */
+	md5_final(digest, &context);	      /* finish up 1st pass */
+	/*
+	 * perform outer MD5
+	 */
+	md5_init(&context);		      /* init context for 2nd
+					       * pass */
+	md5_update(&context, k_opad, 64);     /* start with outer pad */
+	md5_update(&context, digest, 16);     /* then results of 1st
+					       * hash */
+	md5_final(digest, &context);	      /* finish up 2nd pass */
+}
+
+
+static void
+md5_hex_hmac(char *hexdigest,
+	     const unsigned char* text, int text_len,
+	     const unsigned char* key, int key_len)
+{
+	unsigned char digest[16];
+	int i;
+
+	md5_hmac(digest, text, text_len, key, key_len);
+	for (i = 0; i < 16; i++)
+		sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+}
+
+void caldav_md5_hex_digest(char *hexdigest, const unsigned char *s) {
+	md5_hex_digest(hexdigest, s);
+}
+
+void caldav_md5_hex_hmac(char *hexdigest,
+                  const unsigned char* text, int text_len,
+                  const unsigned char* key, int key_len) {
+	md5_hex_hmac(hexdigest, text, text_len, key, key_len);
+}
diff --git a/src/md5.h b/src/md5.h
new file mode 100644
index 0000000..7605214
--- /dev/null
+++ b/src/md5.h
@@ -0,0 +1,52 @@
+/**
+ * md5.h - MD5 Message-Digest Algorithm
+ *	Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+ *
+ * according to the definition of MD5 in RFC 1321 from April 1992.
+ * NOTE: This is *not* the same file as the one from glibc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 3, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _MD5_HDR_
+#define _MD5_HDR_
+
+#include <glib.h>
+
+/**
+ * @typedef u32
+ * Kept this typedef for compatibility reasons
+ */
+#ifndef HAVE_U32_TYPEDEF
+	#undef u32
+	typedef guint32 u32;
+	#define HAVE_U32_TYPEDEF
+#endif
+
+typedef struct {  /* Hmm, should be private */
+    u32 A,B,C,D;
+    u32  nblocks;
+    unsigned char buf[64];
+    int  count;
+    int  finalized;
+} MD5_CONTEXT;
+
+void caldav_md5_hex_digest(char *hexdigest, const unsigned char *s);
+
+void caldav_md5_hex_hmac(char *hexdigest,
+                  const unsigned char* text, int text_len,
+                  const unsigned char* key, int key_len);
+
+#endif /* _MD5_HDR_ */
+
diff --git a/src/modify-caldav-object.c b/src/modify-caldav-object.c
new file mode 100644
index 0000000..fb3a4d0
--- /dev/null
+++ b/src/modify-caldav-object.c
@@ -0,0 +1,555 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "modify-caldav-object.h"
+#include "lock-caldav-object.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VEVENT\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the first part of the calendar query.
+ * The actual UID to use for the query is added at runtime.
+ */
+static char* search_tasks_head =
+"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+"<C:calendar-query xmlns:D=\"DAV:\""
+"                  xmlns:C=\"urn:ietf:params:xml:ns:caldav\">"
+"  <D:prop>"
+"    <D:getetag/>"
+"    <C:calendar-data/>"
+"  </D:prop>"
+"  <C:filter>"
+"    <C:comp-filter name=\"VCALENDAR\">"
+"      <C:comp-filter name=\"VTODO\">"
+"        <C:prop-filter name=\"UID\">";
+
+/**
+ * A static literal string containing the last part of the calendar query
+ */
+static char* search_tail =
+"</C:prop-filter>"
+"      </C:comp-filter>"
+"    </C:comp-filter>"
+"  </C:filter>"
+"</C:calendar-query>";
+
+/**
+ * Function for modifying an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_modify(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean result = FALSE;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * collation is not supported by ICalendar.
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	g_free(search);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+				if (url) {
+					int lock = 0;
+					caldav_error lock_error;
+	
+					file = g_strdup(etag);
+					g_free(etag);
+					etag = g_strdup_printf("If-Match: %s", file);
+					g_free(file);
+					http_header = curl_slist_append(http_header, etag);
+					g_free(etag);
+					http_header = curl_slist_append(http_header,
+						"Content-Type: text/calendar; charset=\"utf-8\"");
+					http_header = curl_slist_append(http_header, "Expect:");
+					http_header = curl_slist_append(
+									http_header, "Transfer-Encoding:");
+					http_header = curl_slist_append(http_header, "Connection: close");
+					if (settings->use_locking)
+						LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+					else
+						LOCKSUPPORT = FALSE;
+					if (LOCKSUPPORT) {
+						lock_token = caldav_lock_object(url, settings, &lock_error);
+						if (lock_token) {
+							http_header = curl_slist_append(
+								http_header, g_strdup_printf(
+										"If: (%s)", lock_token));
+						}
+						/*
+						 * If error code is 423 (Resource is LOCKED) bail out
+						 */
+						else if (lock_error.code == 423) {
+							lock = -1;
+						}
+						/*
+						 * If error code is 501 (Not implemented) we continue
+						 * hoping for the best.
+						 */
+						else if (lock_error.code == 501) {
+							lock_token = g_strdup("");
+						}
+						else {
+							lock = -1;
+						}
+					}
+					if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+						curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+						curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+						curl_easy_setopt(curl, CURLOPT_POSTFIELDS, settings->file);
+						curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 
+									strlen(settings->file));
+						curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+						curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+						curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+						curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+						res = curl_easy_perform(curl);
+						if (LOCKSUPPORT && lock_token) {
+							caldav_unlock_object(
+									lock_token, url, settings, &lock_error);
+						}
+					}
+					g_free(url);
+					g_free(lock_token);
+					if (res != 0 || lock < 0) {
+						/* Is this a lock_error don't change error*/
+						if (lock == 0 || lock_error.code == 423) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+						}
+						else {
+							error->code = lock_error.code;
+							error->str = g_strdup(lock_error.str);
+						}
+						result = TRUE;
+						g_free(settings->file);
+						settings->file = NULL;
+					}
+					else {
+						long code;
+						res = curl_easy_getinfo(
+									curl, CURLINFO_RESPONSE_CODE, &code);
+						if (code != 204) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+							result = TRUE;
+						}
+					}
+					curl_slist_free_all(http_header);
+				}
+				else {
+					error->code = code;
+					if (chunk.memory)
+						error->str = g_strdup(chunk.memory);
+					else
+						error->str = g_strdup("No object found");
+					result = TRUE;
+				}
+			}
+			else {
+				/* 
+				 * No object found on server. Posible synchronization
+				 * problem or a server side race condition
+				 */
+				error->code = 409;
+				error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
+/**
+ * Function for modifying a task.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_modify(caldav_settings* settings, caldav_error* error) {
+	CURL* curl;
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct config_data data;
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	struct curl_slist *http_header = NULL;
+	gchar* search;
+	gchar* uid;
+	gboolean result = FALSE;
+	gboolean LOCKSUPPORT = FALSE;
+	gchar* lock_token = NULL;
+
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	curl = get_curl(settings);
+	if (!curl) {
+		error->code = -1;
+		error->str = g_strdup("Could not initialize libcurl");
+		g_free(settings->file);
+		settings->file = NULL;
+		return TRUE;
+	}
+
+	http_header = curl_slist_append(http_header,
+			"Content-Type: application/xml; charset=\"utf-8\"");
+	http_header = curl_slist_append(http_header, "Depth: 1");
+	http_header = curl_slist_append(http_header, "Expect:");
+	http_header = curl_slist_append(http_header, "Transfer-Encoding:");
+	http_header = curl_slist_append(http_header, "Connection: close");
+	data.trace_ascii = settings->trace_ascii;
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION,	WriteHeaderCallback);
+	/* we pass our 'headers' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	if (settings->debug) {
+		curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
+		curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &data);
+		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+	}
+	gchar* file = g_strdup(settings->file);
+	if ((uid = get_response_header("uid", file, FALSE)) == NULL) {
+		g_free(file);
+		error->code = 1;
+		error->str = g_strdup("Error: Missing required UID for object");
+		return TRUE;
+	}
+	g_free(file);
+	/*
+	 * collation is not supported by ICalendar.
+	 * <C:text-match collation=\"i;ascii-casemap\">%s</C:text-match>
+	 */
+	search = g_strdup_printf(
+		"%s\r\n<C:text-match>%s</C:text-match>\r\n%s",
+		search_tasks_head, uid, search_tail);
+	g_free(uid);
+	/* enable uploading */
+	curl_easy_setopt(curl, CURLOPT_POSTFIELDS, search);
+	curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, strlen(search));
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "REPORT");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	curl_slist_free_all(http_header);
+	http_header = NULL;
+	g_free(search);
+	if (res != 0) {
+		error->code = -1;
+		error->str = g_strdup_printf("%s", error_buf);
+		g_free(settings->file);
+		settings->file = NULL;
+		result = TRUE;
+	}
+	else {
+		long code;
+		res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+		if (code != 207) {
+			error->code = code;
+			error->str = g_strdup(chunk.memory);
+			result = TRUE;
+		}
+		else {
+			/* enable uploading */
+			gchar* url = NULL;
+			gchar* etag = NULL;
+			url = get_url(chunk.memory);
+			if (url) {
+				etag = get_etag(chunk.memory);
+				if (etag) {
+					gchar* host = get_host(settings->url);
+					if (host) {
+						file = g_strdup(url);
+						g_free(url);
+						url = g_strdup_printf("%s%s", host, file);
+						g_free(file);
+						g_free(host);
+					}
+					else {
+						g_free(etag);
+						g_free(url);
+						url = NULL;
+					}
+				}
+				else {
+					g_free(url);
+					url = NULL;
+				}
+				if (url) {
+					int lock = 0;
+					caldav_error lock_error;
+	
+					file = g_strdup(etag);
+					g_free(etag);
+					etag = g_strdup_printf("If-Match: %s", file);
+					g_free(file);
+					http_header = curl_slist_append(http_header, etag);
+					g_free(etag);
+					http_header = curl_slist_append(http_header,
+						"Content-Type: text/calendar; charset=\"utf-8\"");
+					http_header = curl_slist_append(http_header, "Expect:");
+					http_header = curl_slist_append(
+									http_header, "Transfer-Encoding:");
+					http_header = curl_slist_append(http_header, "Connection: close");
+					if (settings->use_locking)
+						LOCKSUPPORT = caldav_lock_support(settings, &lock_error);
+					else
+						LOCKSUPPORT = FALSE;
+					if (LOCKSUPPORT) {
+						lock_token = caldav_lock_object(url, settings, &lock_error);
+						if (lock_token) {
+							http_header = curl_slist_append(
+								http_header, g_strdup_printf(
+										"If: (%s)", lock_token));
+						}
+						/*
+						 * If error code is 423 (Resource is LOCKED) bail out
+						 */
+						else if (lock_error.code == 423) {
+							lock = -1;
+						}
+						/*
+						 * If error code is 501 (Not implemented) we continue
+						 * hoping for the best.
+						 */
+						else if (lock_error.code == 501) {
+							lock_token = g_strdup("");
+						}
+						else {
+							lock = -1;
+						}
+					}
+					if (! LOCKSUPPORT || (LOCKSUPPORT && lock_token && lock_error.code != 423)) {
+						curl_easy_setopt(curl, CURLOPT_HTTPHEADER, http_header);
+						curl_easy_setopt(curl, CURLOPT_URL, rebuild_url(settings, url));
+						curl_easy_setopt(curl, CURLOPT_POSTFIELDS, settings->file);
+						curl_easy_setopt (curl, CURLOPT_POSTFIELDSIZE, 
+									strlen(settings->file));
+						curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+						curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+						curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+						curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+						res = curl_easy_perform(curl);
+						if (LOCKSUPPORT && lock_token) {
+							caldav_unlock_object(
+									lock_token, url, settings, &lock_error);
+						}
+					}
+					g_free(url);
+					g_free(lock_token);
+					if (res != 0 || lock < 0) {
+						/* Is this a lock_error don't change error*/
+						if (lock == 0 || lock_error.code == 423) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+						}
+						else {
+							error->code = lock_error.code;
+							error->str = g_strdup(lock_error.str);
+						}
+						result = TRUE;
+						g_free(settings->file);
+						settings->file = NULL;
+					}
+					else {
+						long code;
+						res = curl_easy_getinfo(
+									curl, CURLINFO_RESPONSE_CODE, &code);
+						if (code != 204) {
+							error->code = code;
+							error->str = g_strdup(chunk.memory);
+							result = TRUE;
+						}
+					}
+					curl_slist_free_all(http_header);
+				}
+				else {
+					error->code = code;
+					if (chunk.memory)
+						error->str = g_strdup(chunk.memory);
+					else
+						error->str = g_strdup("No object found");
+					result = TRUE;
+				}
+			}
+			else {
+				/* 
+				 * No object found on server. Posible synchronization
+				 * problem or a server side race condition
+				 */
+				error->code = 409;
+				error->str = g_strdup("No object found");
+				result = TRUE;
+			}
+		}
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_cleanup(curl);
+	return result;
+}
+
diff --git a/src/modify-caldav-object.h b/src/modify-caldav-object.h
new file mode 100644
index 0000000..4171f91
--- /dev/null
+++ b/src/modify-caldav-object.h
@@ -0,0 +1,42 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __MODIFY_CALDAV_OBJECT_H__
+#define __MODIFY_CALDAV_OBJECT_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for modifying an event.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_modify(caldav_settings* settings, caldav_error* error);
+
+/**
+ * Function for modifying a task.
+ * @param settings A pointer to caldav_settings. @see caldav_settings
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @return TRUE in case of error, FALSE otherwise.
+ */
+gboolean caldav_tasks_modify(caldav_settings* settings, caldav_error* error);
+
+#endif
diff --git a/src/options-caldav-server.c b/src/options-caldav-server.c
new file mode 100644
index 0000000..1d97d04
--- /dev/null
+++ b/src/options-caldav-server.c
@@ -0,0 +1,135 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "options-caldav-server.h"
+#include <glib.h>
+#include <curl/curl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * Function for getting supported options from a server.
+ * @param curl A pointer to an initialized CURL instance
+ * @param settings struct containing the URL to the server. If authentication
+ * is required prior to making the call the credentials must be available
+ * via CURLOPT_USERPWD before calling.
+ * @param result A pointer to a struct _response. If test is true
+ * this variable can be NULL. Caller is responsible for freeing associated
+ * memory.
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @param test if this is true response will be whether the server
+ * represented by the URL is a CalDAV collection or not.
+ * @return FALSE in case of error, TRUE otherwise.
+ */
+gboolean caldav_getoptions(CURL* curl, caldav_settings* settings, response* result,
+		caldav_error* error, gboolean test) {
+	CURLcode res = 0;
+	char error_buf[CURL_ERROR_SIZE];
+	struct MemoryStruct chunk;
+	struct MemoryStruct headers;
+	gboolean enabled = FALSE;
+
+	if (! curl)
+		return FALSE;
+
+	if (!error) {
+		error = (caldav_error *) malloc(sizeof(struct _caldav_error));
+		memset(error, '\0', sizeof(struct _caldav_error));
+	}
+	chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
+	chunk.size = 0;    /* no data at this point */
+	headers.memory = NULL;
+	headers.size = 0;
+
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+	/* send all data to this function  */
+	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, WriteHeaderCallback);
+	/* we pass our 'chunk' struct to the callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEHEADER, (void *)&headers);
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, (char *) &error_buf);
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "OPTIONS");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+	curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1);
+	curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	res = curl_easy_perform(curl);
+	if (res == 0) {
+		gchar* head;
+		head = get_response_header("DAV", headers.memory, TRUE);
+		if (head && strstr(head, "calendar-access") != NULL) {
+			enabled = TRUE;
+			if (! test) {
+				result->msg = g_strdup(
+						get_response_header("Allow", headers.memory, FALSE));
+			}
+		}
+		else {
+			long code;
+			res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+			if (code == 200) {
+				error->code = -1;
+				error->str = g_strdup("URL is not a CalDAV resource");
+			}
+			else {
+				error->code = -1 * code;
+				error->str = g_strdup(headers.memory);
+			}
+		}
+		g_free(head);
+	}
+	else if (
+		(res == CURLE_SSL_CONNECT_ERROR ||
+		 CURLE_PEER_FAILED_VERIFICATION ||
+		 CURLE_SSL_ENGINE_NOTFOUND ||
+		 CURLE_SSL_ENGINE_SETFAILED ||
+		 CURLE_SSL_CERTPROBLEM ||
+		 CURLE_SSL_CIPHER ||
+		 CURLE_SSL_CACERT ||
+		 CURLE_SSL_CACERT_BADFILE ||
+		 CURLE_SSL_CRL_BADFILE ||
+		 CURLE_SSL_ISSUER_ERROR) && settings->usehttps) {
+		error->code = -2;
+		error->str = g_strdup(error_buf);
+	}
+	else if (res == CURLE_COULDNT_RESOLVE_HOST) {
+		error->code = -3;
+		error->str = g_strdup("Could not resolve host");
+	}
+	else if (res == CURLE_COULDNT_CONNECT) {
+		error->code = -4;
+		error->str = g_strdup("Unable to connect");
+	}
+	else {
+		error->code = -1;
+		error->str = g_strdup("URL is not a CalDAV resource");
+	}
+	if (chunk.memory)
+		free(chunk.memory);
+	if (headers.memory)
+		free(headers.memory);
+	curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "GET");
+	return enabled;
+}
diff --git a/src/options-caldav-server.h b/src/options-caldav-server.h
new file mode 100644
index 0000000..d17cba2
--- /dev/null
+++ b/src/options-caldav-server.h
@@ -0,0 +1,43 @@
+/* vim: set textwidth=80 tabstop=4: */
+
+/* Copyright (c) 2008 Michael Rasmussen (mir@datanom.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __OPTIONS_CALDAV_SERVER_H__
+#define __OPTIONS_CALDAV_SERVER_H__
+
+#include "caldav-utils.h"
+#include "caldav.h"
+
+/**
+ * Function for getting supported options from a server.
+ * @param curl A pointer to an initialized CURL instance
+ * @param settings struct containing the URL to the server. If authentication
+ * is required prior to making the call the credentials must be available
+ * via CURLOPT_USERPWD before calling.
+ * @param result A pointer to a struct _response. If test is true
+ * this variable can be NULL. Caller is responsible for freeing associated
+ * memory.
+ * @param error A pointer to caldav_error. @see caldav_error
+ * @param test if this is true response will be whether the server
+ * represented by the URL is a CalDAV collection or not.
+ * @return FALSE in case of error, TRUE otherwise.
+ */
+gboolean caldav_getoptions(CURL* curl, caldav_settings* settings, response* result,
+				caldav_error* error, gboolean test);
+
+#endif