mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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62c3227e2f
Original commit message from CVS: Almost completely rewritten gstreamer-register. Now checks most errors that can happen, and displays a useful message.
128 lines
3.5 KiB
C
128 lines
3.5 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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* gstreamer-register.c: Plugin subsystem for loading elements, types, and libs
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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 <stdlib.h>
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#include <gst/gst.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#define GST_CONFIG_DIR "/etc/gstreamer"
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#define GLOBAL_REGISTRY_FILE GST_CONFIG_DIR"/reg.xml"
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#define GLOBAL_REGISTRY_FILE_TMP GST_CONFIG_DIR"/.reg.xml.tmp"
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extern gboolean _gst_plugin_spew;
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static void error_perm() {
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g_print("\n(%s)\n"
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"Do you have the appropriate permissions?\n"
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"You may need to be root to run this command.\n\n",
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strerror(errno));
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exit(1);
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}
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static void usage(const char *progname) {
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g_print("usage: %s\n", progname);
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g_print("Builds the plugin registry for gstreamer.\n");
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g_print("This command will usually require superuser privileges.\n\n");
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exit(0);
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}
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static int is_file(const char * filename) {
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struct stat statbuf;
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if(stat(filename, &statbuf)) return 0;
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return S_ISREG(statbuf.st_mode);
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}
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static int is_dir(const char * filename) {
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struct stat statbuf;
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if(stat(filename, &statbuf)) return 0;
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return S_ISDIR(statbuf.st_mode);
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}
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static void move_file(const char * nameold, const char * namenew) {
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if (!is_file(nameold)) {
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g_print("Temporary `%s' is not a file", nameold);
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error_perm();
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}
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if (is_dir(namenew)) {
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g_print("Destination path `%s' is a directory\n", namenew);
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g_print("Please remove, or reconfigure GStreamer\n\n");
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exit(1);
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}
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if (rename(nameold, namenew)) {
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g_print("Cannot move `%s' to `%s'", nameold, namenew);
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error_perm();
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}
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}
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static int make_dir(const char * dirname) {
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mode_t mode = 0766;
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return !mkdir(dirname, mode);
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}
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void check_dir(const char * dirname) {
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if (!is_dir(dirname)) {
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if (!make_dir(dirname)) {
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g_print("Cannot create GStreamer registry directory `%s'",
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dirname);
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error_perm();
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}
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}
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}
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int main(int argc,char *argv[])
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{
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xmlDocPtr doc;
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if (argc != 1) usage(argv[0]);
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// Check that directory for config exists
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check_dir(GST_CONFIG_DIR);
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// Read the plugins
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_gst_plugin_spew = TRUE;
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gst_init(&argc,&argv);
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doc = xmlNewDoc("1.0");
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doc->root = xmlNewDocNode(doc, NULL, "GST-PluginRegistry", NULL);
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gst_plugin_save_thyself(doc->root);
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// Save the registry to a tmp file.
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// FIXME; check for failure.
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if (xmlSaveFile(GLOBAL_REGISTRY_FILE_TMP, doc)) {
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g_print("Cannot save new registry `%s'",
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GLOBAL_REGISTRY_FILE_TMP);
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error_perm();
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}
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// Make the tmp file live.
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move_file(GLOBAL_REGISTRY_FILE_TMP, GLOBAL_REGISTRY_FILE);
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return(0);
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}
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