Initial import

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diff --git a/src/caldav-utils.h b/src/caldav-utils.h
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+/* 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