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/*
* GConf BerkeleyDB back-end
*
* Copyright (C) 2000 Sun Microsystems Inc
* Contributed to the GConf project.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <dirent.h>
#include <gconf/gconf-backend.h>
#include <gconf/gconf-internals.h>
#include <gconf/gconf.h>
/* mode_to_to_mode: copied from xml-dir.c - needs to be a common utility */
guint
mode_t_to_mode(mode_t orig)
{
guint mode = 0;
if (orig & S_IRUSR)
mode |= 0400;
if (orig & S_IWUSR)
mode |= 0200;
if (orig & S_IXUSR)
mode |= 0100;
if (orig & S_IRGRP)
mode |= 0040;
if (orig & S_IWGRP)
mode |= 0020;
if (orig & S_IXGRP)
mode |= 0010;
if (orig & S_IROTH)
mode |= 0004;
if (orig & S_IWOTH)
mode |= 0002;
if (orig & S_IXOTH)
mode |= 0001;
return mode;
}
static void
free_list_element (gpointer data, gpointer user_data)
{
g_free (data);
}
/* g_free()s each element's data, then free's the list */
void
_gconf_slist_free_all (GSList * list)
{
if (!list)
return;
g_slist_foreach (list, free_list_element, NULL);
g_slist_free (list);
}
/* NOTE: body of _gconf_get_root_dir() is taken directly from initial code in
xml-backend.c:resolve_address() */
/* parses root directory of a file-based GConf database and checks
* directory existence/writeability/locking
*/
char *
_gconf_get_root_dir (const char *address, guint * pflags,
const gchar * dbtype, GError ** err)
{
gchar *root_dir;
guint len;
guint dir_mode = 0700;
guint file_mode = 0600;
gint flags = 0;
GConfLock *lock = NULL;
root_dir = gconf_address_resource (address);
if (root_dir == NULL)
{
gconf_set_error (err, GCONF_ERROR_BAD_ADDRESS,
_
("Couldn't find the %s root directory in the address `%s'"),
dbtype, address);
return NULL;
}
/* Chop trailing '/' to canonicalize */
len = strlen (root_dir);
if (root_dir[len - 1] == '/')
root_dir[len - 1] = '\0';
if (mkdir (root_dir, dir_mode) < 0)
{
if (errno != EEXIST)
{
gconf_set_error (err, GCONF_ERROR_FAILED,
_("Could not make directory `%s': %s"),
(gchar *) root_dir, strerror (errno));
g_free (root_dir);
return NULL;
}
else
{
/* Already exists, base our dir_mode on it */
struct stat statbuf;
if (stat (root_dir, &statbuf) == 0)
{
dir_mode = mode_t_to_mode (statbuf.st_mode);
/* dir_mode without search bits */
file_mode = dir_mode & (~0111);
}
}
}
{
/* See if we're writeable */
gboolean writeable = FALSE;
int fd;
gchar *testfile;
testfile = g_strconcat (root_dir, "/.testing.writeability", NULL);
fd = open (testfile, O_CREAT | O_WRONLY, S_IRWXU);
if (fd >= 0)
{
writeable = TRUE;
close (fd);
}
unlink (testfile);
g_free (testfile);
if (writeable)
flags |= GCONF_SOURCE_ALL_WRITEABLE;
/* We only do locking if it's writeable,
which is sort of broken but close enough
*/
if (writeable)
{
gchar *lockdir;
lockdir = gconf_concat_dir_and_key (root_dir, "%gconf-backend.lock");
lock = gconf_get_lock (lockdir, err);
if (lock != NULL)
gconf_log (GCL_DEBUG, "Acquired %s lock directory `%s'", dbtype,
lockdir);
g_free (lockdir);
if (lock == NULL)
{
g_free (root_dir);
return NULL;
}
}
}
{
/* see if we're readable */
gboolean readable = FALSE;
DIR *d;
d = opendir (root_dir);
if (d != NULL)
{
readable = TRUE;
closedir (d);
}
if (readable)
flags |= GCONF_SOURCE_ALL_READABLE;
}
if (!(flags & GCONF_SOURCE_ALL_READABLE) &&
!(flags & GCONF_SOURCE_ALL_WRITEABLE))
{
gconf_set_error (err, GCONF_ERROR_BAD_ADDRESS,
_
("Can't read from or write to the %s root directory in the address `%s'"),
dbtype, address);
g_free (root_dir);
return NULL;
}
*pflags = flags;
return root_dir;
}
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