gstreamer/gst/gstregistry.c
Benjamin Otte ce8e4a8879 we don't use // in code we commit :)
Original commit message from CVS:
hi wtay (and some others): we don't use // in code we commit :)
2002-04-14 14:59:34 +00:00

135 lines
4 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstregistry.c: handle registry
*
* 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 <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "gstinfo.h"
#include "gstregistry.h"
static gchar *gst_registry_option = NULL;
/* save the registry specified as an option */
void
gst_registry_option_set (const gchar *registry)
{
gst_registry_option = g_strdup (registry);
return;
}
/* decide if we're going to use the global registry or not
* - if root, use global
* - if not root :
* - if user can write to global, use global
* - else use local
*/
gboolean
gst_registry_use_global (void)
{
/* struct stat reg_stat; */
FILE *reg;
if (getuid () == 0) return TRUE; /* root always uses global */
/* check if we can write to the global registry somehow */
reg = fopen (GLOBAL_REGISTRY_FILE, "a");
if (reg == NULL) { return FALSE; }
else
{
/* we can write to it, do so for kicks */
fclose (reg);
}
/* we can write to it, so now see if we can write in the dir as well */
if (access (GLOBAL_REGISTRY_DIR, W_OK) == 0) return TRUE;
return FALSE;
}
/* get the data that tells us where we can write the registry
* Allocate, fill in the GstRegistryWrite struct according to
* current situation, and return it */
GstRegistryWrite *
gst_registry_write_get ()
{
GstRegistryWrite *gst_reg = g_malloc (sizeof (GstRegistryWrite));
/* if a registry is specified on command line, use that one */
if (gst_registry_option)
{
/* FIXME: maybe parse the dir from file ? */
gst_reg->dir = NULL;
gst_reg->file = gst_registry_option;
/* we cannot use the temp dir since the move needs to be on same device */
gst_reg->tmp_file = g_strdup_printf ("%s.tmp", gst_registry_option);
}
else
{
if (gst_registry_use_global ())
{
gst_reg->dir = g_strdup (GLOBAL_REGISTRY_DIR);
gst_reg->file = g_strdup (GLOBAL_REGISTRY_FILE);
gst_reg->tmp_file = g_strdup (GLOBAL_REGISTRY_FILE_TMP);
}
else
{
gchar *homedir = (gchar *) g_get_home_dir ();
gst_reg->dir = g_strjoin ("/", homedir, LOCAL_REGISTRY_DIR, NULL);
gst_reg->file = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE, NULL);
gst_reg->tmp_file = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE_TMP, NULL);
}
}
return gst_reg;
}
/* fill in the GstRegistryRead struct according to current situation */
GstRegistryRead *
gst_registry_read_get ()
{
GstRegistryRead *gst_reg = g_malloc (sizeof (GstRegistryRead));
/* if a registry is specified on command line, use that one */
if (gst_registry_option)
{
/* FIXME: maybe parse the dir from file ? */
gst_reg->local_reg = NULL;
gst_reg->global_reg = gst_registry_option;
}
else
{
gchar *homedir = (gchar *) g_get_home_dir ();
gst_reg->local_reg = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE, NULL);
if (g_file_test (gst_reg->local_reg, G_FILE_TEST_EXISTS) == FALSE)
{
/* it does not exist, so don't read from it */
g_free (gst_reg->local_reg);
}
gst_reg->global_reg = g_strdup (GLOBAL_REGISTRY_FILE);
}
return gst_reg;
}