mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 21:28:45 +00:00
Based on patch by: Daniel Macks <dmacks@netspace.org> Earlier versions of OSX don't support proper multiarch and trying to use /usr/bin/arch -foo with those versions would just break things. https://bugzilla.gnome.org/show_bug.cgi?id=615357
1026 lines
28 KiB
C
1026 lines
28 KiB
C
/* GStreamer
|
|
* Copyright (C) 2008 Jan Schmidt <jan.schmidt@sun.com>
|
|
*
|
|
* gstpluginloader.c: GstPluginLoader helper for loading plugin files
|
|
* out of process.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst_private.h>
|
|
|
|
#ifndef G_OS_WIN32
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#else
|
|
#define fsync(fd) _commit(fd)
|
|
#include <io.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_UTSNAME_H
|
|
#include <sys/utsname.h>
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
|
|
#include <gst/gstconfig.h>
|
|
|
|
#include <gst/gstpoll.h>
|
|
#include <gst/gstutils.h>
|
|
|
|
#include <gst/gstpluginloader.h>
|
|
#include <gst/gstregistrychunks.h>
|
|
#include <gst/gstregistrybinary.h>
|
|
|
|
/* IMPORTANT: Bump the version number if the plugin loader packet protocol
|
|
* changes. Changes in the binary registry format itself are handled by
|
|
* bumping the GST_MAGIC_BINARY_VERSION_STR
|
|
*/
|
|
static const guint32 loader_protocol_version = 3;
|
|
|
|
#define GST_CAT_DEFAULT GST_CAT_PLUGIN_LOADING
|
|
|
|
static GstPluginLoader *plugin_loader_new (GstRegistry * registry);
|
|
static gboolean plugin_loader_free (GstPluginLoader * loader);
|
|
static gboolean plugin_loader_load (GstPluginLoader * loader,
|
|
const gchar * filename, off_t file_size, time_t file_mtime);
|
|
|
|
/* functions used in GstRegistry scanning */
|
|
const GstPluginLoaderFuncs _priv_gst_plugin_loader_funcs = {
|
|
plugin_loader_new, plugin_loader_free, plugin_loader_load
|
|
};
|
|
|
|
typedef struct _PendingPluginEntry
|
|
{
|
|
/* sequence number */
|
|
guint32 tag;
|
|
gchar *filename;
|
|
off_t file_size;
|
|
time_t file_mtime;
|
|
} PendingPluginEntry;
|
|
|
|
struct _GstPluginLoader
|
|
{
|
|
GstRegistry *registry;
|
|
GstPoll *fdset;
|
|
|
|
gboolean child_running;
|
|
GPid child_pid;
|
|
GstPollFD fd_w;
|
|
GstPollFD fd_r;
|
|
|
|
gboolean is_child;
|
|
gboolean got_plugin_details;
|
|
|
|
/* Transmit buffer */
|
|
guint8 *tx_buf;
|
|
guint tx_buf_size;
|
|
guint tx_buf_write;
|
|
guint tx_buf_read;
|
|
|
|
/* next sequence number (for PendingPluginEntry) */
|
|
guint32 next_tag;
|
|
|
|
guint8 *rx_buf;
|
|
guint rx_buf_size;
|
|
gboolean rx_done;
|
|
gboolean rx_got_sync;
|
|
|
|
/* Head and tail of the pending plugins list. List of
|
|
PendingPluginEntry structs */
|
|
GList *pending_plugins;
|
|
GList *pending_plugins_tail;
|
|
};
|
|
|
|
#define PACKET_EXIT 1
|
|
#define PACKET_LOAD_PLUGIN 2
|
|
#define PACKET_SYNC 3
|
|
#define PACKET_PLUGIN_DETAILS 4
|
|
#define PACKET_VERSION 5
|
|
|
|
#define BUF_INIT_SIZE 512
|
|
#define BUF_GROW_EXTRA 512
|
|
#define BUF_MAX_SIZE (32 * 1024 * 1024)
|
|
|
|
#define HEADER_SIZE 12
|
|
/* 4 magic hex bytes to mark each packet */
|
|
#define HEADER_MAGIC 0xbefec0ae
|
|
#define ALIGNMENT (sizeof (void *))
|
|
|
|
static gboolean gst_plugin_loader_spawn (GstPluginLoader * loader);
|
|
static void put_packet (GstPluginLoader * loader, guint type, guint32 tag,
|
|
const guint8 * payload, guint32 payload_len);
|
|
static gboolean exchange_packets (GstPluginLoader * l);
|
|
static gboolean plugin_loader_replay_pending (GstPluginLoader * l);
|
|
static gboolean plugin_loader_load_and_sync (GstPluginLoader * l,
|
|
PendingPluginEntry * entry);
|
|
static void plugin_loader_create_blacklist_plugin (GstPluginLoader * l,
|
|
PendingPluginEntry * entry);
|
|
static void plugin_loader_cleanup_child (GstPluginLoader * loader);
|
|
static gboolean plugin_loader_sync_with_child (GstPluginLoader * l);
|
|
|
|
static GstPluginLoader *
|
|
plugin_loader_new (GstRegistry * registry)
|
|
{
|
|
GstPluginLoader *l = g_slice_new0 (GstPluginLoader);
|
|
|
|
if (registry)
|
|
l->registry = gst_object_ref (registry);
|
|
l->fdset = gst_poll_new (FALSE);
|
|
gst_poll_fd_init (&l->fd_w);
|
|
gst_poll_fd_init (&l->fd_r);
|
|
|
|
l->tx_buf_size = BUF_INIT_SIZE;
|
|
l->tx_buf = g_malloc (BUF_INIT_SIZE);
|
|
|
|
l->next_tag = 0;
|
|
|
|
l->rx_buf_size = BUF_INIT_SIZE;
|
|
l->rx_buf = g_malloc (BUF_INIT_SIZE);
|
|
|
|
return l;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_loader_free (GstPluginLoader * loader)
|
|
{
|
|
GList *cur;
|
|
gboolean got_plugin_details;
|
|
|
|
fsync (loader->fd_w.fd);
|
|
|
|
if (loader->child_running) {
|
|
put_packet (loader, PACKET_EXIT, 0, NULL, 0);
|
|
|
|
/* Swap packets with the child until it exits cleanly */
|
|
while (!loader->rx_done) {
|
|
if (exchange_packets (loader) || loader->rx_done)
|
|
continue;
|
|
|
|
if (!plugin_loader_replay_pending (loader))
|
|
break;
|
|
put_packet (loader, PACKET_EXIT, 0, NULL, 0);
|
|
}
|
|
|
|
plugin_loader_cleanup_child (loader);
|
|
} else {
|
|
close (loader->fd_w.fd);
|
|
close (loader->fd_r.fd);
|
|
}
|
|
|
|
gst_poll_free (loader->fdset);
|
|
|
|
g_free (loader->rx_buf);
|
|
g_free (loader->tx_buf);
|
|
|
|
if (loader->registry)
|
|
gst_object_unref (loader->registry);
|
|
|
|
got_plugin_details = loader->got_plugin_details;
|
|
|
|
/* Free any pending plugin entries */
|
|
cur = loader->pending_plugins;
|
|
while (cur) {
|
|
PendingPluginEntry *entry = (PendingPluginEntry *) (cur->data);
|
|
g_free (entry->filename);
|
|
g_slice_free (PendingPluginEntry, entry);
|
|
|
|
cur = g_list_delete_link (cur, cur);
|
|
}
|
|
|
|
g_slice_free (GstPluginLoader, loader);
|
|
|
|
return got_plugin_details;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_loader_load (GstPluginLoader * loader, const gchar * filename,
|
|
off_t file_size, time_t file_mtime)
|
|
{
|
|
gint len;
|
|
PendingPluginEntry *entry;
|
|
|
|
if (!gst_plugin_loader_spawn (loader))
|
|
return FALSE;
|
|
|
|
/* Send a packet to the child requesting that it load the given file */
|
|
GST_LOG_OBJECT (loader->registry,
|
|
"Sending file %s to child. tag %u", filename, loader->next_tag);
|
|
|
|
entry = g_slice_new (PendingPluginEntry);
|
|
entry->tag = loader->next_tag++;
|
|
entry->filename = g_strdup (filename);
|
|
entry->file_size = file_size;
|
|
entry->file_mtime = file_mtime;
|
|
loader->pending_plugins_tail =
|
|
g_list_append (loader->pending_plugins_tail, entry);
|
|
|
|
if (loader->pending_plugins == NULL)
|
|
loader->pending_plugins = loader->pending_plugins_tail;
|
|
else
|
|
loader->pending_plugins_tail = g_list_next (loader->pending_plugins_tail);
|
|
|
|
len = strlen (filename);
|
|
put_packet (loader, PACKET_LOAD_PLUGIN, entry->tag,
|
|
(guint8 *) filename, len + 1);
|
|
|
|
if (!exchange_packets (loader)) {
|
|
if (!plugin_loader_replay_pending (loader))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_loader_replay_pending (GstPluginLoader * l)
|
|
{
|
|
GList *cur, *next;
|
|
|
|
restart:
|
|
if (!gst_plugin_loader_spawn (l))
|
|
return FALSE;
|
|
|
|
/* Load each plugin one by one synchronously until we find the
|
|
* crashing one */
|
|
while ((cur = l->pending_plugins)) {
|
|
PendingPluginEntry *entry = (PendingPluginEntry *) (cur->data);
|
|
|
|
if (!plugin_loader_load_and_sync (l, entry)) {
|
|
/* Create dummy plugin entry to block re-scanning this file */
|
|
GST_ERROR ("Plugin file %s failed to load. Blacklisting",
|
|
entry->filename);
|
|
plugin_loader_create_blacklist_plugin (l, entry);
|
|
l->got_plugin_details = TRUE;
|
|
/* Now remove this crashy plugin from the head of the list */
|
|
l->pending_plugins = g_list_delete_link (cur, cur);
|
|
g_free (entry->filename);
|
|
g_slice_free (PendingPluginEntry, entry);
|
|
if (l->pending_plugins == NULL)
|
|
l->pending_plugins_tail = NULL;
|
|
if (!gst_plugin_loader_spawn (l))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* We exited after finding the crashing one. If there's any more pending,
|
|
* dispatch them post-haste, but don't wait */
|
|
for (cur = l->pending_plugins; cur != NULL; cur = next) {
|
|
PendingPluginEntry *entry = (PendingPluginEntry *) (cur->data);
|
|
|
|
next = g_list_next (cur);
|
|
|
|
put_packet (l, PACKET_LOAD_PLUGIN, entry->tag,
|
|
(guint8 *) entry->filename, strlen (entry->filename) + 1);
|
|
|
|
/* This might invalidate cur, which is why we grabbed 'next' above */
|
|
if (!exchange_packets (l))
|
|
goto restart;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_loader_sync_with_child (GstPluginLoader * l)
|
|
{
|
|
put_packet (l, PACKET_SYNC, 0, NULL, 0);
|
|
|
|
l->rx_got_sync = FALSE;
|
|
while (!l->rx_got_sync) {
|
|
if (!exchange_packets (l))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_loader_load_and_sync (GstPluginLoader * l, PendingPluginEntry * entry)
|
|
{
|
|
gint len;
|
|
|
|
GST_DEBUG_OBJECT (l->registry, "Synchronously loading plugin file %s",
|
|
entry->filename);
|
|
|
|
len = strlen (entry->filename);
|
|
put_packet (l, PACKET_LOAD_PLUGIN, entry->tag,
|
|
(guint8 *) entry->filename, len + 1);
|
|
|
|
return plugin_loader_sync_with_child (l);
|
|
}
|
|
|
|
static void
|
|
plugin_loader_create_blacklist_plugin (GstPluginLoader * l,
|
|
PendingPluginEntry * entry)
|
|
{
|
|
GstPlugin *plugin = g_object_newv (GST_TYPE_PLUGIN, 0, NULL);
|
|
|
|
plugin->filename = g_strdup (entry->filename);
|
|
plugin->file_mtime = entry->file_mtime;
|
|
plugin->file_size = entry->file_size;
|
|
plugin->flags |= GST_PLUGIN_FLAG_BLACKLISTED;
|
|
|
|
plugin->basename = g_path_get_basename (plugin->filename);
|
|
plugin->desc.name = g_intern_string (plugin->basename);
|
|
plugin->desc.description = "Plugin for blacklisted file";
|
|
plugin->desc.version = "0.0.0";
|
|
plugin->desc.license = "BLACKLIST";
|
|
plugin->desc.source = plugin->desc.license;
|
|
plugin->desc.package = plugin->desc.license;
|
|
plugin->desc.origin = plugin->desc.license;
|
|
|
|
GST_DEBUG ("Adding blacklist plugin '%s'", plugin->desc.name);
|
|
gst_registry_add_plugin (l->registry, plugin);
|
|
}
|
|
|
|
#ifdef __APPLE__
|
|
#if defined(__x86_64__)
|
|
#define USR_BIN_ARCH_SWITCH "-x86_64"
|
|
#elif defined(__i386__)
|
|
#define USR_BIN_ARCH_SWITCH "-i386"
|
|
#elif defined(__ppc__)
|
|
#define USR_BIN_ARCH_SWITCH "-ppc"
|
|
#elif defined(__ppc64__)
|
|
#define USR_BIN_ARCH_SWITCH "-ppc64"
|
|
#endif
|
|
#endif
|
|
|
|
#define YES_MULTIARCH 1
|
|
#define NO_MULTIARCH 2
|
|
|
|
#if defined (__APPLE__) && defined (USR_BIN_ARCH_SWITCH)
|
|
static gboolean
|
|
gst_plugin_loader_use_usr_bin_arch (void)
|
|
{
|
|
static volatile gsize multiarch = 0;
|
|
|
|
if (g_once_init_enter (&multiarch)) {
|
|
gsize res = NO_MULTIARCH;
|
|
|
|
#ifdef HAVE_SYS_UTSNAME_H
|
|
{
|
|
struct utsname uname_data;
|
|
|
|
if (uname (&uname_data) == 0) {
|
|
/* Check for OS X >= 10.5 (darwin kernel 9.0) */
|
|
GST_LOG ("%s %s", uname_data.sysname, uname_data.release);
|
|
if (g_ascii_strcasecmp (uname_data.sysname, "Darwin") == 0 &&
|
|
g_strtod (uname_data.release, NULL) >= 9.0) {
|
|
res = YES_MULTIARCH;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
GST_INFO ("multiarch: %s", (res == YES_MULTIARCH) ? "yes" : "no");
|
|
g_once_init_leave (&multiarch, res);
|
|
}
|
|
return (multiarch == YES_MULTIARCH);
|
|
}
|
|
#endif /* __APPLE__ && USR_BIN_ARCH_SWITCH */
|
|
|
|
static gboolean
|
|
gst_plugin_loader_try_helper (GstPluginLoader * loader, gchar * location)
|
|
{
|
|
char *argv[5] = { NULL, };
|
|
int c = 0;
|
|
|
|
#if defined (__APPLE__) && defined (USR_BIN_ARCH_SWITCH)
|
|
if (gst_plugin_loader_use_usr_bin_arch ()) {
|
|
argv[c++] = (char *) "/usr/bin/arch";
|
|
argv[c++] = (char *) USR_BIN_ARCH_SWITCH;
|
|
}
|
|
#endif
|
|
argv[c++] = location;
|
|
argv[c++] = (char *) "-l";
|
|
argv[c++] = NULL;
|
|
|
|
if (c > 3) {
|
|
GST_LOG ("Trying to spawn gst-plugin-scanner helper at %s with arch %s",
|
|
location, argv[1]);
|
|
} else {
|
|
GST_LOG ("Trying to spawn gst-plugin-scanner helper at %s", location);
|
|
}
|
|
|
|
if (!g_spawn_async_with_pipes (NULL, argv, NULL,
|
|
G_SPAWN_DO_NOT_REAP_CHILD /* | G_SPAWN_STDERR_TO_DEV_NULL */ ,
|
|
NULL, NULL, &loader->child_pid, &loader->fd_w.fd, &loader->fd_r.fd,
|
|
NULL, NULL))
|
|
return FALSE;
|
|
|
|
gst_poll_add_fd (loader->fdset, &loader->fd_w);
|
|
gst_poll_add_fd (loader->fdset, &loader->fd_r);
|
|
|
|
gst_poll_fd_ctl_read (loader->fdset, &loader->fd_r, TRUE);
|
|
|
|
loader->tx_buf_write = loader->tx_buf_read = 0;
|
|
|
|
put_packet (loader, PACKET_VERSION, 0, NULL, 0);
|
|
if (!plugin_loader_sync_with_child (loader))
|
|
return FALSE;
|
|
|
|
loader->child_running = TRUE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_plugin_loader_spawn (GstPluginLoader * loader)
|
|
{
|
|
const gchar *env;
|
|
char *helper_bin;
|
|
gboolean res = FALSE;
|
|
|
|
if (loader->child_running)
|
|
return TRUE;
|
|
|
|
/* Find the gst-plugin-scanner: first try the env-var if it is set,
|
|
* otherwise use the installed version */
|
|
env = g_getenv ("GST_PLUGIN_SCANNER");
|
|
|
|
if (env != NULL && *env != '\0') {
|
|
GST_LOG ("Trying GST_PLUGIN_SCANNER env var: %s", env);
|
|
helper_bin = g_strdup (env);
|
|
res = gst_plugin_loader_try_helper (loader, helper_bin);
|
|
g_free (helper_bin);
|
|
}
|
|
|
|
if (!res) {
|
|
GST_LOG ("Trying installed plugin scanner");
|
|
helper_bin = g_strdup (GST_PLUGIN_SCANNER_INSTALLED);
|
|
res = gst_plugin_loader_try_helper (loader, helper_bin);
|
|
g_free (helper_bin);
|
|
|
|
if (!res) {
|
|
GST_INFO ("No gst-plugin-scanner available, or not working");
|
|
}
|
|
}
|
|
|
|
return loader->child_running;
|
|
}
|
|
|
|
static void
|
|
plugin_loader_cleanup_child (GstPluginLoader * l)
|
|
{
|
|
if (!l->child_running || l->is_child)
|
|
return;
|
|
|
|
gst_poll_remove_fd (l->fdset, &l->fd_w);
|
|
gst_poll_remove_fd (l->fdset, &l->fd_r);
|
|
|
|
close (l->fd_w.fd);
|
|
close (l->fd_r.fd);
|
|
|
|
#ifndef G_OS_WIN32
|
|
GST_LOG ("waiting for child process to exit");
|
|
waitpid (l->child_pid, NULL, 0);
|
|
#else
|
|
g_warning ("FIXME: Implement child process shutdown for Win32");
|
|
#endif
|
|
g_spawn_close_pid (l->child_pid);
|
|
|
|
l->child_running = FALSE;
|
|
}
|
|
|
|
gboolean
|
|
_gst_plugin_loader_client_run (void)
|
|
{
|
|
GstPluginLoader *l;
|
|
|
|
l = plugin_loader_new (NULL);
|
|
if (l == NULL)
|
|
return FALSE;
|
|
|
|
/* On entry, the inward pipe is STDIN, and outward is STDOUT.
|
|
* Dup those somewhere better so that plugins printing things
|
|
* won't interfere with anything */
|
|
#ifndef G_OS_WIN32
|
|
{
|
|
int dup_fd;
|
|
|
|
dup_fd = dup (0); /* STDIN */
|
|
if (dup_fd == -1) {
|
|
GST_ERROR ("Failed to start. Could no dup STDIN, errno %d", errno);
|
|
return FALSE;
|
|
}
|
|
l->fd_r.fd = dup_fd;
|
|
close (0);
|
|
|
|
dup_fd = dup (1); /* STDOUT */
|
|
if (dup_fd == -1) {
|
|
GST_ERROR ("Failed to start. Could no dup STDOUT, errno %d", errno);
|
|
return FALSE;
|
|
}
|
|
l->fd_w.fd = dup_fd;
|
|
close (1);
|
|
|
|
/* Dup stderr down to stdout so things that plugins print are visible,
|
|
* but don't care if it fails */
|
|
dup2 (2, 1);
|
|
}
|
|
#else
|
|
/* FIXME: Use DuplicateHandle and friends on win32 */
|
|
l->fd_w.fd = 1; /* STDOUT */
|
|
l->fd_r.fd = 0; /* STDIN */
|
|
#endif
|
|
|
|
gst_poll_add_fd (l->fdset, &l->fd_w);
|
|
gst_poll_add_fd (l->fdset, &l->fd_r);
|
|
gst_poll_fd_ctl_read (l->fdset, &l->fd_r, TRUE);
|
|
|
|
l->is_child = TRUE;
|
|
|
|
GST_DEBUG ("Plugin scanner child running. Waiting for instructions");
|
|
|
|
/* Loop, listening for incoming packets on the fd and writing responses */
|
|
while (!l->rx_done && exchange_packets (l));
|
|
|
|
plugin_loader_free (l);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
put_packet (GstPluginLoader * l, guint type, guint32 tag,
|
|
const guint8 * payload, guint32 payload_len)
|
|
{
|
|
guint8 *out;
|
|
guint len = payload_len + HEADER_SIZE;
|
|
|
|
if (l->tx_buf_write + len >= l->tx_buf_size) {
|
|
GST_LOG ("Expanding tx buf from %d to %d for packet of size %d",
|
|
l->tx_buf_size, l->tx_buf_write + len + BUF_GROW_EXTRA, len);
|
|
l->tx_buf_size = l->tx_buf_write + len + BUF_GROW_EXTRA;
|
|
l->tx_buf = g_realloc (l->tx_buf, l->tx_buf_size);
|
|
}
|
|
|
|
out = l->tx_buf + l->tx_buf_write;
|
|
|
|
/* one byte packet type */
|
|
out[0] = type;
|
|
/* 3 byte packet tag number */
|
|
GST_WRITE_UINT24_BE (out + 1, tag);
|
|
/* 4 bytes packet length */
|
|
GST_WRITE_UINT32_BE (out + 4, payload_len);
|
|
/* payload */
|
|
memcpy (out + HEADER_SIZE, payload, payload_len);
|
|
/* Write magic into the header */
|
|
GST_WRITE_UINT32_BE (out + 8, HEADER_MAGIC);
|
|
|
|
l->tx_buf_write += len;
|
|
gst_poll_fd_ctl_write (l->fdset, &l->fd_w, TRUE);
|
|
}
|
|
|
|
static void
|
|
put_chunk (GstPluginLoader * l, GstRegistryChunk * chunk, guint * pos)
|
|
{
|
|
guint padsize = 0;
|
|
guint len;
|
|
guint8 *out;
|
|
|
|
/* Might need to align the chunk */
|
|
if (chunk->align && ((*pos) % ALIGNMENT) != 0)
|
|
padsize = ALIGNMENT - ((*pos) % ALIGNMENT);
|
|
|
|
len = padsize + chunk->size;
|
|
|
|
if (G_UNLIKELY (l->tx_buf_write + len >= l->tx_buf_size)) {
|
|
guint new_size = MAX (l->tx_buf_write + len,
|
|
l->tx_buf_size + l->tx_buf_size / 4) + BUF_GROW_EXTRA;
|
|
GST_LOG ("Expanding tx buf from %d to %d for chunk of size %d",
|
|
l->tx_buf_size, new_size, chunk->size);
|
|
l->tx_buf_size = new_size;
|
|
l->tx_buf = g_realloc (l->tx_buf, l->tx_buf_size);
|
|
}
|
|
|
|
out = l->tx_buf + l->tx_buf_write;
|
|
/* Clear the padding */
|
|
if (padsize)
|
|
memset (out, 0, padsize);
|
|
memcpy (out + padsize, chunk->data, chunk->size);
|
|
|
|
l->tx_buf_write += len;
|
|
*pos += len;
|
|
|
|
gst_poll_fd_ctl_write (l->fdset, &l->fd_w, TRUE);
|
|
};
|
|
|
|
static gboolean
|
|
write_one (GstPluginLoader * l)
|
|
{
|
|
guint8 *out;
|
|
guint32 to_write, magic;
|
|
int res;
|
|
|
|
if (l->tx_buf_read + HEADER_SIZE > l->tx_buf_write)
|
|
return FALSE;
|
|
|
|
out = l->tx_buf + l->tx_buf_read;
|
|
|
|
magic = GST_READ_UINT32_BE (out + 8);
|
|
if (magic != HEADER_MAGIC) {
|
|
GST_ERROR ("Packet magic number is missing. Memory corruption detected");
|
|
goto fail_and_cleanup;
|
|
}
|
|
|
|
to_write = GST_READ_UINT32_BE (out + 4) + HEADER_SIZE;
|
|
/* Check that the magic is intact, and the size is sensible */
|
|
if (to_write > l->tx_buf_size) {
|
|
GST_ERROR ("Indicated packet size is too large. Corruption detected");
|
|
goto fail_and_cleanup;
|
|
}
|
|
|
|
l->tx_buf_read += to_write;
|
|
|
|
GST_LOG ("Writing packet of size %d bytes to fd %d", to_write, l->fd_w.fd);
|
|
|
|
do {
|
|
res = write (l->fd_w.fd, out, to_write);
|
|
if (G_UNLIKELY (res < 0)) {
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
continue;
|
|
/* Failed to write -> child died */
|
|
goto fail_and_cleanup;
|
|
}
|
|
to_write -= res;
|
|
out += res;
|
|
} while (to_write > 0);
|
|
|
|
if (l->tx_buf_read == l->tx_buf_write) {
|
|
gst_poll_fd_ctl_write (l->fdset, &l->fd_w, FALSE);
|
|
l->tx_buf_read = l->tx_buf_write = 0;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
fail_and_cleanup:
|
|
plugin_loader_cleanup_child (l);
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
do_plugin_load (GstPluginLoader * l, const gchar * filename, guint tag)
|
|
{
|
|
GstPlugin *newplugin;
|
|
GList *chunks = NULL;
|
|
|
|
GST_DEBUG ("Plugin scanner loading file %s. tag %u", filename, tag);
|
|
|
|
#if 0 /* Test code - crash based on filename */
|
|
if (strstr (filename, "coreelements") == NULL) {
|
|
g_printerr ("Crashing on file %s\n", filename);
|
|
g_printerr ("%d", *(gint *) (NULL));
|
|
}
|
|
#endif
|
|
|
|
newplugin = gst_plugin_load_file ((gchar *) filename, NULL);
|
|
if (newplugin) {
|
|
guint hdr_pos;
|
|
guint offset;
|
|
|
|
/* Now serialise the plugin details and send */
|
|
if (!_priv_gst_registry_chunks_save_plugin (&chunks,
|
|
gst_registry_get_default (), newplugin))
|
|
goto fail;
|
|
|
|
/* Store where the header is, write an empty one, then write
|
|
* all the payload chunks, then fix up the header size */
|
|
hdr_pos = l->tx_buf_write;
|
|
offset = HEADER_SIZE;
|
|
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
|
|
|
|
if (chunks) {
|
|
GList *walk;
|
|
for (walk = chunks; walk; walk = g_list_next (walk)) {
|
|
GstRegistryChunk *cur = walk->data;
|
|
put_chunk (l, cur, &offset);
|
|
|
|
_priv_gst_registry_chunk_free (cur);
|
|
}
|
|
|
|
g_list_free (chunks);
|
|
|
|
/* Store the size of the written payload */
|
|
GST_WRITE_UINT32_BE (l->tx_buf + hdr_pos + 4, offset - HEADER_SIZE);
|
|
}
|
|
#if 0 /* Test code - corrupt the tx buffer based on filename */
|
|
if (strstr (filename, "sink") != NULL) {
|
|
int fd, res;
|
|
g_printerr ("Corrupting tx buf on file %s\n", filename);
|
|
fd = open ("/dev/urandom", O_RDONLY);
|
|
res = read (fd, l->tx_buf, l->tx_buf_size);
|
|
close (fd);
|
|
}
|
|
#endif
|
|
|
|
gst_object_unref (newplugin);
|
|
} else {
|
|
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
|
|
}
|
|
|
|
return TRUE;
|
|
fail:
|
|
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
|
|
if (chunks) {
|
|
GList *walk;
|
|
for (walk = chunks; walk; walk = g_list_next (walk)) {
|
|
GstRegistryChunk *cur = walk->data;
|
|
|
|
_priv_gst_registry_chunk_free (cur);
|
|
}
|
|
|
|
g_list_free (chunks);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
check_protocol_version (GstPluginLoader * l, guint8 * payload,
|
|
guint payload_len)
|
|
{
|
|
guint32 got_version;
|
|
guint8 *binary_reg_ver;
|
|
|
|
if (payload_len < sizeof (guint32) + GST_MAGIC_BINARY_VERSION_LEN)
|
|
return FALSE;
|
|
|
|
got_version = GST_READ_UINT32_BE (payload);
|
|
GST_LOG ("Got VERSION %u from child. Ours is %u", got_version,
|
|
loader_protocol_version);
|
|
if (got_version != loader_protocol_version)
|
|
return FALSE;
|
|
|
|
binary_reg_ver = payload + sizeof (guint32);
|
|
if (strcmp ((gchar *) binary_reg_ver, GST_MAGIC_BINARY_VERSION_STR)) {
|
|
GST_LOG ("Binary chunk format of child is different. Ours: %s, child %s\n",
|
|
GST_MAGIC_BINARY_VERSION_STR, binary_reg_ver);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
};
|
|
|
|
static gboolean
|
|
handle_rx_packet (GstPluginLoader * l,
|
|
guint pack_type, guint32 tag, guint8 * payload, guint payload_len)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
switch (pack_type) {
|
|
case PACKET_EXIT:
|
|
gst_poll_fd_ctl_read (l->fdset, &l->fd_r, FALSE);
|
|
if (l->is_child) {
|
|
/* Respond */
|
|
put_packet (l, PACKET_EXIT, 0, NULL, 0);
|
|
}
|
|
l->rx_done = TRUE;
|
|
return TRUE;
|
|
case PACKET_LOAD_PLUGIN:{
|
|
if (!l->is_child)
|
|
return TRUE;
|
|
|
|
/* Payload is the filename to load */
|
|
res = do_plugin_load (l, (gchar *) payload, tag);
|
|
|
|
break;
|
|
}
|
|
case PACKET_PLUGIN_DETAILS:{
|
|
gchar *tmp = (gchar *) payload;
|
|
PendingPluginEntry *entry = NULL;
|
|
GList *cur;
|
|
|
|
GST_DEBUG_OBJECT (l->registry,
|
|
"Received plugin details from child w/ tag %u. %d bytes info",
|
|
tag, payload_len);
|
|
|
|
/* Assume that tagged details come back in the order
|
|
* we requested, and delete anything before (but not
|
|
* including) this one */
|
|
cur = l->pending_plugins;
|
|
while (cur) {
|
|
PendingPluginEntry *e = (PendingPluginEntry *) (cur->data);
|
|
|
|
if (e->tag > tag)
|
|
break;
|
|
|
|
if (e->tag == tag) {
|
|
entry = e;
|
|
break;
|
|
} else {
|
|
cur = g_list_delete_link (cur, cur);
|
|
g_free (e->filename);
|
|
g_slice_free (PendingPluginEntry, e);
|
|
}
|
|
}
|
|
|
|
l->pending_plugins = cur;
|
|
if (cur == NULL)
|
|
l->pending_plugins_tail = NULL;
|
|
|
|
if (payload_len > 0) {
|
|
GstPlugin *newplugin = NULL;
|
|
if (!_priv_gst_registry_chunks_load_plugin (l->registry, &tmp,
|
|
tmp + payload_len, &newplugin)) {
|
|
/* Got garbage from the child, so fail and trigger replay of plugins */
|
|
GST_ERROR_OBJECT (l->registry,
|
|
"Problems loading plugin details with tag %u from scanner", tag);
|
|
return FALSE;
|
|
}
|
|
|
|
newplugin->flags &= ~GST_PLUGIN_FLAG_CACHED;
|
|
GST_LOG_OBJECT (l->registry,
|
|
"marking plugin %p as registered as %s", newplugin,
|
|
newplugin->filename);
|
|
newplugin->registered = TRUE;
|
|
|
|
/* We got a set of plugin details - remember it for later */
|
|
l->got_plugin_details = TRUE;
|
|
} else if (entry != NULL) {
|
|
/* Create a blacklist entry for this file to prevent scanning every time */
|
|
plugin_loader_create_blacklist_plugin (l, entry);
|
|
l->got_plugin_details = TRUE;
|
|
}
|
|
|
|
if (entry != NULL) {
|
|
g_free (entry->filename);
|
|
g_slice_free (PendingPluginEntry, entry);
|
|
}
|
|
|
|
/* Remove the plugin entry we just loaded */
|
|
cur = l->pending_plugins;
|
|
if (cur != NULL)
|
|
cur = g_list_delete_link (cur, cur);
|
|
l->pending_plugins = cur;
|
|
if (cur == NULL)
|
|
l->pending_plugins_tail = NULL;
|
|
|
|
break;
|
|
}
|
|
case PACKET_SYNC:
|
|
if (l->is_child) {
|
|
/* Respond with our reply - also a sync */
|
|
put_packet (l, PACKET_SYNC, tag, NULL, 0);
|
|
GST_LOG ("Got SYNC in child - replying");
|
|
} else
|
|
l->rx_got_sync = TRUE;
|
|
break;
|
|
case PACKET_VERSION:
|
|
if (l->is_child) {
|
|
/* Respond with our reply - a version packet, with the version */
|
|
const gint version_len =
|
|
sizeof (guint32) + GST_MAGIC_BINARY_VERSION_LEN;
|
|
guint8 version_info[sizeof (guint32) + GST_MAGIC_BINARY_VERSION_LEN];
|
|
memset (version_info, 0, version_len);
|
|
GST_WRITE_UINT32_BE (version_info, loader_protocol_version);
|
|
memcpy (version_info + sizeof (guint32), GST_MAGIC_BINARY_VERSION_STR,
|
|
strlen (GST_MAGIC_BINARY_VERSION_STR));
|
|
put_packet (l, PACKET_VERSION, tag, version_info, version_len);
|
|
GST_LOG ("Got VERSION in child - replying %u", loader_protocol_version);
|
|
} else {
|
|
res = check_protocol_version (l, payload, payload_len);
|
|
}
|
|
break;
|
|
default:
|
|
return FALSE; /* Invalid packet -> something is wrong */
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
read_one (GstPluginLoader * l)
|
|
{
|
|
guint64 magic;
|
|
guint32 to_read, packet_len, tag;
|
|
guint8 *in;
|
|
gint res;
|
|
|
|
to_read = HEADER_SIZE;
|
|
in = l->rx_buf;
|
|
do {
|
|
res = read (l->fd_r.fd, in, to_read);
|
|
if (G_UNLIKELY (res < 0)) {
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
continue;
|
|
GST_LOG ("Failed reading packet header");
|
|
return FALSE;
|
|
}
|
|
to_read -= res;
|
|
in += res;
|
|
} while (to_read > 0);
|
|
|
|
magic = GST_READ_UINT32_BE (l->rx_buf + 8);
|
|
if (magic != HEADER_MAGIC) {
|
|
GST_WARNING
|
|
("Invalid packet (bad magic number) received from plugin scanner subprocess");
|
|
return FALSE;
|
|
}
|
|
|
|
packet_len = GST_READ_UINT32_BE (l->rx_buf + 4);
|
|
if (packet_len + HEADER_SIZE > BUF_MAX_SIZE) {
|
|
GST_WARNING
|
|
("Received excessively large packet for plugin scanner subprocess");
|
|
return FALSE;
|
|
}
|
|
tag = GST_READ_UINT24_BE (l->rx_buf + 1);
|
|
|
|
if (packet_len > 0) {
|
|
if (packet_len + HEADER_SIZE >= l->rx_buf_size) {
|
|
GST_LOG ("Expanding rx buf from %d to %d",
|
|
l->rx_buf_size, packet_len + HEADER_SIZE + BUF_GROW_EXTRA);
|
|
l->rx_buf_size = packet_len + HEADER_SIZE + BUF_GROW_EXTRA;
|
|
l->rx_buf = g_realloc (l->rx_buf, l->rx_buf_size);
|
|
}
|
|
|
|
in = l->rx_buf + HEADER_SIZE;
|
|
to_read = packet_len;
|
|
do {
|
|
res = read (l->fd_r.fd, in, to_read);
|
|
if (G_UNLIKELY (res < 0)) {
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
continue;
|
|
GST_ERROR ("Packet payload read failed");
|
|
return FALSE;
|
|
}
|
|
to_read -= res;
|
|
in += res;
|
|
} while (to_read > 0);
|
|
} else {
|
|
GST_LOG ("No payload to read for 0 length packet type %d tag %u",
|
|
l->rx_buf[0], tag);
|
|
}
|
|
|
|
return handle_rx_packet (l, l->rx_buf[0], tag,
|
|
l->rx_buf + HEADER_SIZE, packet_len);
|
|
}
|
|
|
|
static gboolean
|
|
exchange_packets (GstPluginLoader * l)
|
|
{
|
|
gint res;
|
|
|
|
/* Wait for activity on our FDs */
|
|
do {
|
|
do {
|
|
res = gst_poll_wait (l->fdset, GST_SECOND);
|
|
} while (res == -1 && (errno == EINTR || errno == EAGAIN));
|
|
|
|
if (res < 0)
|
|
return FALSE;
|
|
|
|
GST_LOG ("Poll res = %d. %d bytes pending for write", res,
|
|
l->tx_buf_write - l->tx_buf_read);
|
|
|
|
if (!l->rx_done) {
|
|
if (gst_poll_fd_has_error (l->fdset, &l->fd_r) ||
|
|
gst_poll_fd_has_closed (l->fdset, &l->fd_r)) {
|
|
GST_LOG ("read fd %d closed/errored", l->fd_r.fd);
|
|
goto fail_and_cleanup;
|
|
}
|
|
|
|
if (gst_poll_fd_can_read (l->fdset, &l->fd_r)) {
|
|
if (!read_one (l))
|
|
goto fail_and_cleanup;
|
|
}
|
|
}
|
|
|
|
if (l->tx_buf_read < l->tx_buf_write) {
|
|
if (gst_poll_fd_has_error (l->fdset, &l->fd_w) ||
|
|
gst_poll_fd_has_closed (l->fdset, &l->fd_r)) {
|
|
GST_ERROR ("write fd %d closed/errored", l->fd_w.fd);
|
|
goto fail_and_cleanup;
|
|
}
|
|
if (gst_poll_fd_can_write (l->fdset, &l->fd_w)) {
|
|
if (!write_one (l))
|
|
goto fail_and_cleanup;
|
|
}
|
|
}
|
|
} while (l->tx_buf_read < l->tx_buf_write);
|
|
|
|
return TRUE;
|
|
fail_and_cleanup:
|
|
plugin_loader_cleanup_child (l);
|
|
return FALSE;
|
|
}
|