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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright 2001 Ximian, Inc. (www.ximian.com)
*
* 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 2 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 Street #330, Boston, MA 02111-1307, USA.
*
*/
#include "e-mktemp.h"
#include <config.h>
#include <glib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#ifdef ENABLE_THREADS
#include <pthread.h>
#endif
static gboolean initialized = FALSE;
static GSList *temp_files = NULL;
static GSList *temp_dirs = NULL;
#ifdef ENABLE_THREADS
static pthread_mutex_t temp_files_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t temp_dirs_lock = PTHREAD_MUTEX_INITIALIZER;
#define TEMP_FILES_LOCK() pthread_mutex_lock (&temp_files_lock)
#define TEMP_FILES_UNLOCK() pthread_mutex_unlock (&temp_files_lock)
#define TEMP_DIRS_LOCK() pthread_mutex_lock (&temp_dirs_lock)
#define TEMP_DIRS_UNLOCK() pthread_mutex_unlock (&temp_dirs_lock)
#else
#define TEMP_FILES_LOCK()
#define TEMP_FILES_UNLOCK()
#define TEMP_DIRS_LOCK()
#define TEMP_DIRS_UNLOCK()
#endif /* ENABLE_THREADS */
static GString *
get_path (gboolean make)
{
GString *path;
path = g_string_new ("/tmp/evolution-");
g_string_sprintfa (path, "%d-%d", (int) getuid (), (int) getpid ());
if (make) {
int ret;
/* shoot now, ask questions later */
ret = mkdir (path->str, S_IRWXU);
if (ret == -1) {
if (errno == EEXIST) {
struct stat st;
if (stat (path->str, &st) == -1) {
/* reset errno */
errno = EEXIST;
g_string_free (path, TRUE);
return NULL;
}
/* make sure this is a directory and belongs to us... */
if (!S_ISDIR (st.st_mode) || st.st_uid != getuid ()) {
/* eek! this is bad... */
g_string_free (path, TRUE);
return NULL;
}
} else {
/* some other error...do not pass go, do not collect $200 */
g_string_free (path, TRUE);
return NULL;
}
}
}
return path;
}
static void
e_mktemp_cleanup (void)
{
GString *path;
GSList *node;
TEMP_FILES_LOCK ();
if (temp_files) {
node = temp_files;
while (node) {
unlink (node->data);
g_free (node->data);
node = node->next;
}
g_slist_free (temp_files);
temp_files = NULL;
}
TEMP_FILES_UNLOCK ();
TEMP_DIRS_LOCK ();
if (temp_dirs) {
node = temp_dirs;
while (node) {
/* perform the equivalent of a rm -rf */
struct dirent *dent;
DIR *dir;
/* first empty out this directory of it's files... */
dir = opendir (node->data);
if (dir) {
while ((dent = readdir (dir)) != NULL) {
/* yea...so if we contain
subdirectories this won't work, but
it shouldn't so we won't
bother caring... */
if (strcmp (dent->d_name, ".") && strcmp (dent->d_name, ".."))
unlink (dent->d_name);
}
closedir (dir);
}
/* ...then rmdir the directory */
rmdir (node->data);
g_free (node->data);
node = node->next;
}
g_slist_free (temp_dirs);
temp_dirs = NULL;
}
TEMP_DIRS_UNLOCK ();
path = get_path (FALSE);
rmdir (path->str);
g_string_free (path, TRUE);
}
const char *
e_mktemp (const char *template)
{
GString *path;
char *ret;
path = get_path (TRUE);
if (!path)
return NULL;
g_string_append_c (path, '/');
if (template)
g_string_append (path, template);
else
g_string_append (path, "unknown-XXXXXX");
ret = mktemp (path->str);
if (ret) {
TEMP_FILES_LOCK ();
if (!initialized) {
g_atexit (e_mktemp_cleanup);
initialized = TRUE;
}
temp_files = g_slist_prepend (temp_files, ret);
g_string_free (path, FALSE);
TEMP_FILES_UNLOCK ();
} else {
g_string_free (path, TRUE);
}
return ret;
}
int
e_mkstemp (const char *template)
{
GString *path;
int fd;
path = get_path (TRUE);
if (!path)
return -1;
g_string_append_c (path, '/');
if (template)
g_string_append (path, template);
else
g_string_append (path, "unknown-XXXXXX");
fd = mkstemp (path->str);
if (fd != -1) {
TEMP_FILES_LOCK ();
if (!initialized) {
g_atexit (e_mktemp_cleanup);
initialized = TRUE;
}
temp_files = g_slist_prepend (temp_files, path->str);
g_string_free (path, FALSE);
TEMP_FILES_UNLOCK ();
} else {
g_string_free (path, TRUE);
}
return fd;
}
const char *
e_mkdtemp (const char *template)
{
GString *path;
char *tmpdir;
path = get_path (TRUE);
if (!path)
return NULL;
g_string_append_c (path, '/');
if (template)
g_string_append (path, template);
else
g_string_append (path, "unknown-XXXXXX");
#ifdef HAVE_MKDTEMP
tmpdir = mkdtemp (path->str);
#else
tmpdir = mktemp (path->str);
if (tmpdir) {
if (mkdir (tmpdir, S_IRWXU) == -1)
tmpdir = NULL;
}
#endif
if (tmpdir) {
TEMP_DIRS_LOCK ();
if (!initialized) {
g_atexit (e_mktemp_cleanup);
initialized = TRUE;
}
temp_dirs = g_slist_prepend (temp_dirs, tmpdir);
g_string_free (path, FALSE);
TEMP_DIRS_UNLOCK ();
} else {
g_string_free (path, TRUE);
}
return tmpdir;
}
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