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-rw-r--r--kinit/lnusertemp.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/kinit/lnusertemp.c b/kinit/lnusertemp.c
new file mode 100644
index 000000000..70457f74f
--- /dev/null
+++ b/kinit/lnusertemp.c
@@ -0,0 +1,274 @@
+/*
+ This file is part of the KDE libraries
+ Copyright (c) 2000 Waldo Bastian <bastian@kde.org>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License version 2 as published by the Free Software Foundation.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/un.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pwd.h>
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+int check_tmp_dir(const char *tmp_dir);
+int create_link(const char *file, const char *tmp_dir);
+int build_link(const char *tmp_prefix, const char *kde_prefix);
+
+int check_tmp_dir(const char *tmp_dir)
+{
+ int result;
+ struct stat stat_buf;
+ result = lstat(tmp_dir, &stat_buf);
+ if ((result == -1) && (errno == ENOENT))
+ {
+ result = mkdir(tmp_dir, 0700);
+ if (result == -1)
+ {
+ fprintf(stderr, "Error: Can not create directory \"%s\".\n", tmp_dir);
+ return 1;
+ }
+ result = stat(tmp_dir, &stat_buf);
+ }
+ if ((result == -1) || (!S_ISDIR(stat_buf.st_mode)))
+ {
+ fprintf(stderr, "Error: \"%s\" is not a directory.\n", tmp_dir);
+ return 1;
+ }
+
+ if (stat_buf.st_uid != getuid())
+ {
+ fprintf(stderr, "Error: \"%s\" is owned by uid %d instead of uid %d.\n", tmp_dir, stat_buf.st_uid, getuid());
+ return 1;
+ }
+ return 0;
+}
+
+int create_link(const char *file, const char *tmp_dir)
+{
+ int result;
+ result = check_tmp_dir(tmp_dir);
+ if (result)
+ {
+ return result;
+ }
+ result = symlink(tmp_dir, file);
+ if (result == -1)
+ {
+ fprintf(stderr, "Error: Can not create link from \"%s\" to \"%s\"\n", file, tmp_dir);
+ return 1;
+ }
+ /*printf("Created link from \"%s\" to \"%s\"\n", file, tmp_dir);*/
+ return 0;
+}
+
+
+int build_link(const char *tmp_prefix, const char *kde_prefix)
+{
+ struct passwd *pw_ent;
+ char kde_tmp_dir[PATH_MAX+1];
+ char user_tmp_dir[PATH_MAX+1];
+ char tmp_buf[PATH_MAX+1];
+ int uid = getuid();
+ const char *home_dir = getenv("HOME");
+ const char *kde_home = uid ? getenv("KDEHOME") : getenv("KDEROOTHOME");
+ int result;
+ struct stat stat_buf;
+
+ kde_tmp_dir[0] = 0;
+
+ pw_ent = getpwuid(uid);
+ if (!pw_ent)
+ {
+ fprintf(stderr, "Error: Can not find password entry for uid %d.\n", getuid());
+ return 1;
+ }
+
+ strncpy(user_tmp_dir, tmp_prefix, PATH_MAX);
+ user_tmp_dir[ PATH_MAX ] = '\0';
+ strncat(user_tmp_dir, pw_ent->pw_name, PATH_MAX - strlen(tmp_prefix));
+
+ if (!kde_home || !kde_home[0])
+ {
+ kde_home = "~/.kde/";
+ }
+
+ if (kde_home[0] == '~')
+ {
+ if (uid == 0)
+ {
+ home_dir = pw_ent->pw_dir ? pw_ent->pw_dir : "/root";
+ }
+ if (!home_dir || !home_dir[0])
+ {
+ fprintf(stderr, "Aborting. $HOME not set!\n");
+ return 1;
+ }
+ if (strlen(home_dir) > (PATH_MAX-100))
+ {
+ fprintf(stderr, "Aborting. Home directory path too long!\n");
+ return 1;
+ }
+ kde_home++;
+ strncpy(kde_tmp_dir, home_dir, PATH_MAX);
+ kde_tmp_dir[ PATH_MAX ] = '\0';
+ }
+ strncat(kde_tmp_dir, kde_home, PATH_MAX - strlen(kde_tmp_dir));
+
+ /** Strip trailing '/' **/
+ if ( kde_tmp_dir[strlen(kde_tmp_dir)-1] == '/')
+ kde_tmp_dir[strlen(kde_tmp_dir)-1] = 0;
+
+ result = stat(kde_tmp_dir, &stat_buf);
+ if ((result == -1) && (errno == ENOENT))
+ {
+ result = mkdir(kde_tmp_dir, 0700);
+ }
+ if (result == -1)
+ {
+ perror("mkdir failed: ");
+ return 1;
+ }
+
+ strncat(kde_tmp_dir, kde_prefix, PATH_MAX - strlen(kde_tmp_dir));
+ if (gethostname(kde_tmp_dir+strlen(kde_tmp_dir), PATH_MAX - strlen(kde_tmp_dir) - 1) != 0)
+ {
+ perror("Aborting. Could not determine hostname: ");
+ exit(255);
+ }
+ kde_tmp_dir[sizeof(kde_tmp_dir)-1] = '\0';
+
+ result = lstat(kde_tmp_dir, &stat_buf);
+ if ((result == 0) && (S_ISDIR(stat_buf.st_mode)))
+ {
+ /* $KDEHOME/tmp is a normal directory. Do nothing. */
+ /*printf("Directory \"%s\" already exists.\n", kde_tmp_dir);*/
+ return 0;
+ }
+ if ((result == -1) && (errno == ENOENT))
+ {
+ /*printf("Creating link %s.\n", kde_tmp_dir);*/
+ result = create_link(kde_tmp_dir, user_tmp_dir);
+ if (result == 0) return 0; /* Success */
+ unlink(kde_tmp_dir);
+ strncat(user_tmp_dir, "XXXXXX", PATH_MAX - strlen(user_tmp_dir));
+ mktemp(user_tmp_dir); /* We want a directory, not a file, so using mkstemp makes no sense and is wrong */
+ return create_link(kde_tmp_dir, user_tmp_dir);
+ }
+ if ((result == -1) || (!S_ISLNK(stat_buf.st_mode)))
+ {
+ fprintf(stderr, "Error: \"%s\" is not a link or a directory.\n", kde_tmp_dir);
+ return 1;
+ }
+ /* kde_tmp_dir is a link. Check whether it points to a valid directory. */
+ result = readlink(kde_tmp_dir, tmp_buf, PATH_MAX);
+ if (result == -1)
+ {
+ fprintf(stderr, "Error: \"%s\" could not be read.\n", kde_tmp_dir);
+ return 1;
+ }
+ tmp_buf[result] = '\0';
+ /*printf("Link points to \"%s\"\n", tmp_buf);*/
+ if (strncmp(tmp_buf, user_tmp_dir, strlen(user_tmp_dir)) != 0)
+ {
+ fprintf(stderr, "Error: \"%s\" points to \"%s\" instead of \"%s\".\n", kde_tmp_dir, tmp_buf, user_tmp_dir);
+ unlink(kde_tmp_dir);
+ /*printf("Creating link %s.\n", kde_tmp_dir);*/
+ result = create_link(kde_tmp_dir, user_tmp_dir);
+ if (result == 0) return 0; /* Success */
+ unlink(kde_tmp_dir);
+ strncat(user_tmp_dir, "XXXXXX", PATH_MAX - strlen(user_tmp_dir));
+ mktemp(user_tmp_dir); /* We want a directory, not a file, so using mkstemp makes no sense and is wrong */
+ return create_link(kde_tmp_dir, user_tmp_dir);
+ }
+ result = check_tmp_dir(tmp_buf);
+ if (result == 0) return 0; /* Success */
+ unlink(kde_tmp_dir);
+ strncat(user_tmp_dir, "XXXXXX", PATH_MAX - strlen(user_tmp_dir));
+ mktemp(user_tmp_dir); /* We want a directory, not a file, so using mkstemp makes no sense and is wrong */
+ return create_link(kde_tmp_dir, user_tmp_dir);
+}
+
+int main(int argc, char **argv)
+{
+ const char *tmp = 0;
+ char *tmp_prefix = 0;
+ const char *kde_prefix = 0;
+ int res = 0;
+
+ if ((argc != 2) ||
+ ((strcmp(argv[1], "tmp")!=0) &&
+ (strcmp(argv[1], "socket")!=0) &&
+ (strcmp(argv[1], "cache")!=0)))
+ {
+ fprintf(stderr, "Usage: lnusertemp tmp|socket|cache\n");
+ return 1;
+ }
+
+ tmp = getenv("KDETMP");
+ if (!tmp || !tmp[0])
+ tmp = getenv("TMPDIR");
+ if (!tmp || !tmp[0])
+ tmp = "/tmp";
+
+ if (strcmp(argv[1], "tmp") == 0)
+ {
+ tmp_prefix = (char *)malloc(strlen(tmp)+strlen("/kde-")+1);
+ strcpy(tmp_prefix, tmp);
+ strcat(tmp_prefix, "/kde-");
+
+ kde_prefix = "/tmp-";
+ }
+ else if (strcmp(argv[1], "socket") == 0)
+ {
+ tmp_prefix = (char *)malloc(strlen(tmp)+strlen("/ksocket-")+1);
+ strcpy(tmp_prefix, tmp );
+ strcat(tmp_prefix, "/ksocket-" );
+
+ kde_prefix = "/socket-";
+ }
+ else if (strcmp(argv[1], "cache") == 0)
+ {
+ tmp = getenv("KDEVARTMP");
+ if (!tmp || !tmp[0])
+ tmp = "/var/tmp";
+
+ tmp_prefix = (char *)malloc(strlen(tmp)+strlen("/kdecache-")+1);
+ strcpy(tmp_prefix, tmp );
+ strcat(tmp_prefix, "/kdecache-" );
+
+ kde_prefix = "/cache-";
+ }
+
+ res = build_link(tmp_prefix, kde_prefix);
+
+ free(tmp_prefix);
+
+ return res;
+}
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