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136 lines
4 KiB
C
136 lines
4 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstregistry.c: handle registry
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <glib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "gstinfo.h"
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#include "gstregistry.h"
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static gchar *gst_registry_option = NULL;
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/* save the registry specified as an option */
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void
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gst_registry_option_set (const gchar *registry)
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{
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gst_registry_option = g_strdup (registry);
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return;
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}
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/* decide if we're going to use the global registry or not
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* - if root, use global
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* - if not root :
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* - if user can write to global, use global
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* - else use local
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*/
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gboolean
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gst_registry_use_global (void)
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{
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//struct stat reg_stat;
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FILE *reg;
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if (getuid () == 0) return TRUE; /* root always uses global */
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/* check if we can write to the global registry somehow */
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reg = fopen (GLOBAL_REGISTRY_FILE, "a");
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if (reg == NULL) { return FALSE; }
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else
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{
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/* we can write to it, do so for kicks */
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fclose (reg);
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}
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/* we can write to it, so now see if we can write in the dir as well */
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if (access (GLOBAL_REGISTRY_DIR, W_OK) == 0) return TRUE;
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return FALSE;
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}
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/* get the data that tells us where we can write the registry
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* Allocate, fill in the GstRegistryWrite struct according to
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* current situation, and return it */
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GstRegistryWrite *
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gst_registry_write_get ()
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{
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GstRegistryWrite *gst_reg = g_malloc (sizeof (GstRegistryWrite));
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/* if a registry is specified on command line, use that one */
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if (gst_registry_option)
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{
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/* FIXME: maybe parse the dir from file ? */
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gst_reg->dir = NULL;
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gst_reg->file = gst_registry_option;
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/* we cannot use the temp dir since the move needs to be on same device */
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gst_reg->tmp_file = g_strdup_printf ("%s.tmp", gst_registry_option);
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}
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else
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{
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if (gst_registry_use_global ())
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{
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gst_reg->dir = g_strdup (GLOBAL_REGISTRY_DIR);
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gst_reg->file = g_strdup (GLOBAL_REGISTRY_FILE);
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gst_reg->tmp_file = g_strdup (GLOBAL_REGISTRY_FILE_TMP);
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}
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else
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{
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gchar *homedir = (gchar *) g_get_home_dir ();
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gst_reg->dir = g_strjoin ("/", homedir, LOCAL_REGISTRY_DIR, NULL);
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gst_reg->file = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE, NULL);
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gst_reg->tmp_file = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE_TMP, NULL);
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}
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}
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return gst_reg;
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}
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/* fill in the GstRegistryRead struct according to current situation */
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GstRegistryRead *
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gst_registry_read_get ()
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{
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GstRegistryRead *gst_reg = g_malloc (sizeof (GstRegistryRead));
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/* if a registry is specified on command line, use that one */
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if (gst_registry_option)
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{
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/* FIXME: maybe parse the dir from file ? */
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gst_reg->local_reg = NULL;
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gst_reg->global_reg = gst_registry_option;
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}
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else
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{
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gchar *homedir = (gchar *) g_get_home_dir ();
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gst_reg->local_reg = g_strjoin ("/", homedir, LOCAL_REGISTRY_FILE, NULL);
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if (g_file_test (gst_reg->local_reg, G_FILE_TEST_EXISTS) == FALSE)
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{
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/* it does not exist, so don't read from it */
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g_free (gst_reg->local_reg);
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}
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gst_reg->global_reg = g_strdup (GLOBAL_REGISTRY_FILE);
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}
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return gst_reg;
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}
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