/*****************************************************************************
* vlc.c: the VLC player
*****************************************************************************
- * Copyright (C) 1998-2008 the VideoLAN team
+ * Copyright (C) 1998-2013 the VideoLAN team
* $Id$
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
+#include <string.h>
#include <locale.h>
#include <signal.h>
-#include <pthread.h>
+#ifdef HAVE_PTHREAD_H
+# include <pthread.h>
+#endif
#include <unistd.h>
-#ifdef __APPLE__
-#include <string.h>
-#endif
+#ifdef __OS2__
+# include <iconv.h>
+# define pthread_t int
+# define pthread_self() _gettid()
-/* Explicit HACK */
-extern void LocaleFree (const char *);
-extern char *FromLocale (const char *);
-extern void vlc_enable_override (void);
-
-#ifdef HAVE_MAEMO
-static void dummy_handler (int signum)
+static char *FromSystem(const void *str)
{
- (void) signum;
+ iconv_t handle = iconv_open ("UTF-8", "");
+ if (handle == (iconv_t)(-1))
+ return NULL;
+
+ size_t str_len = strlen (str);
+ char *out = NULL;
+ for (unsigned mul = 4; mul < 8; mul++)
+ {
+ size_t in_size = str_len;
+ const char *in = str;
+ size_t out_max = mul * str_len;
+ char *tmp = out = malloc (1 + out_max);
+ if (!out)
+ break;
+
+ if (iconv (handle, &in, &in_size, &tmp, &out_max) != (size_t)(-1)) {
+ *tmp = '\0';
+ break;
+ }
+ free(out);
+ out = NULL;
+
+ if (errno != E2BIG)
+ break;
+ }
+ iconv_close(handle);
+ return out;
}
#endif
+extern void vlc_enable_override (void);
+
static bool signal_ignored (int signum)
{
struct sigaction sa;
static void vlc_kill (void *data)
{
+#ifndef __OS2__
pthread_t *ps = data;
pthread_kill (*ps, SIGTERM);
+#else
+ // send a signal to the main thread
+ kill (getpid(), SIGTERM);
+#endif
}
static void exit_timeout (int signum)
int main( int i_argc, const char *ppsz_argv[] )
{
/* The so-called POSIX-compliant MacOS X reportedly processes SIGPIPE even
- * if it is blocked in all thread. Also some libraries want SIGPIPE blocked
- * as they have no clue about signal masks.
+ * if it is blocked in all thread.
* Note: this is NOT an excuse for not protecting against SIGPIPE. If
* LibVLC runs outside of VLC, we cannot rely on this code snippet. */
signal (SIGPIPE, SIG_IGN);
- /* Restore default for SIGCHLD in case parent ignores it. */
+ /* Restore SIGCHLD in case our parent process ignores it. */
signal (SIGCHLD, SIG_DFL);
-#ifdef HAVE_SETENV
-# ifndef NDEBUG
+#ifndef NDEBUG
/* Activate malloc checking routines to detect heap corruptions. */
setenv ("MALLOC_CHECK_", "2", 1);
/* Disable the ugly Gnome crash dialog so that we properly segfault */
setenv ("GNOME_DISABLE_CRASH_DIALOG", "1", 1);
-# endif
+#endif
+
+#ifdef TOP_BUILDDIR
+ setenv ("VLC_PLUGIN_PATH", TOP_BUILDDIR"/modules", 1);
+ setenv ("VLC_DATA_PATH", TOP_SRCDIR"/share", 1);
+#endif
/* Clear the X.Org startup notification ID. Otherwise the UI might try to
* change the environment while the process is multi-threaded. That could
* crash. Screw you X.Org. Next time write a thread-safe specification. */
unsetenv ("DESKTOP_STARTUP_ID");
-#endif
#ifndef ALLOW_RUN_AS_ROOT
if (geteuid () == 0)
setlocale (LC_ALL, "");
-#ifndef __APPLE__
- /* This clutters OSX GUI error logs */
- fprintf( stderr, "VLC media player %s (revision %s)\n",
- libvlc_get_version(), libvlc_get_changeset() );
-#endif
+ if (isatty (STDERR_FILENO))
+ /* This message clutters error logs. It is printed only on a TTY.
+ * Fortunately, LibVLC prints version info with -vv anyway. */
+ fprintf (stderr, "VLC media player %s (revision %s)\n",
+ libvlc_get_version(), libvlc_get_changeset());
sigset_t set;
sigemptyset (&set);
- /* Synchronously intercepted POSIX signals.
+ /* VLC uses sigwait() to dequeue interesting signals.
+ * For this to work, those signals must be blocked in all threads,
+ * including the thread calling sigwait() (see the man page for details).
*
- * In a threaded program such as VLC, the only sane way to handle signals
- * is to block them in all threads but one - this is the only way to
- * predict which thread will receive them. If any piece of code depends
- * on delivery of one of this signal it is intrinsically not thread-safe
- * and MUST NOT be used in VLC, whether we like it or not.
- * There is only one exception: if the signal is raised with
- * pthread_kill() - we do not use this in LibVLC but some pthread
- * implementations use them internally. You should really use conditions
- * for thread synchronization anyway.
+ * There are two advantages to sigwait() over traditional signal handlers:
+ * - delivery is synchronous: no need to worry about async-safety,
+ * - EINTR is not generated: other threads need not handle that error.
+ * That being said, some LibVLC programs do not use sigwait(). Therefore
+ * EINTR must still be handled cleanly, notably from poll() calls.
*
- * Signal that request a clean shutdown, and force an unclean shutdown
+ * Signals that request a clean shutdown, and force an unclean shutdown
* if they are triggered again 2+ seconds later.
* We have to handle SIGTERM cleanly because of daemon mode. */
sigaddset (&set, SIGINT);
sigaddset (&set, SIGQUIT);
sigaddset (&set, SIGTERM);
- /* Signals that cause a no-op:
- * - SIGPIPE might happen with sockets and would crash VLC. It MUST be
- * blocked by any LibVLC-dependent application, not just VLC.
- * - SIGCHLD comes after exec*() (such as httpd CGI support) and must
- * be dequeued to cleanup zombie processes.
+ /* SIGPIPE can happen and would crash the process. On modern systems,
+ * the MSG_NOSIGNAL flag protects socket write operations against SIGPIPE.
+ * But we still need to block SIGPIPE when:
+ * - writing to pipes,
+ * - using write() instead of send() for code not specific to sockets.
+ * LibVLC code assumes that SIGPIPE is blocked. Other LibVLC applications
+ * shall block it (or handle it somehow) too.
*/
sigaddset (&set, SIGPIPE);
+
+ /* SIGCHLD must be dequeued to clean up zombie child processes.
+ * Furthermore the handler must not be set to SIG_IGN (see above).
+ * We cannot pragmatically handle EINTR, short reads and short writes
+ * in every code paths (including underlying libraries). So we just
+ * block SIGCHLD in all threads, and dequeue it below. */
sigaddset (&set, SIGCHLD);
-#ifdef HAVE_MAEMO
- sigaddset (&set, SIGRTMIN);
- {
- struct sigaction act = { .sa_handler = dummy_handler, };
- sigaction (SIGRTMIN, &act, NULL);
- }
-#endif
/* Block all these signals */
- pthread_sigmask (SIG_BLOCK, &set, NULL);
+ pthread_t self = pthread_self ();
+ pthread_sigmask (SIG_SETMASK, &set, NULL);
- /* Note that FromLocale() can be used before libvlc is initialized */
- const char *argv[i_argc + 4];
+ const char *argv[i_argc + 2];
int argc = 0;
argv[argc++] = "--no-ignore-config";
argv[argc++] = "--media-library";
-#ifdef TOP_BUILDDIR
- argv[argc++] = FromLocale ("--plugin-path="TOP_BUILDDIR"/modules");
+ ppsz_argv++; i_argc--; /* skip executable path */
+
+#ifdef __OS2__
+ for (int i = 0; i < i_argc; i++)
+ if ((argv[argc++] = FromSystem (ppsz_argv[i])) == NULL)
+ {
+ fprintf (stderr, "Converting '%s' to UTF-8 failed.\n",
+ ppsz_argv[i]);
+ return 1;
+ }
+#else
+ memcpy (argv + argc, ppsz_argv, i_argc * sizeof (*argv));
+ argc += i_argc;
#endif
-#ifdef TOP_SRCDIR
- argv[argc++] = FromLocale ("--data-path="TOP_SRCDIR"/share");
-#endif
-
- int i = 1;
-#ifdef __APPLE__
- /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
- * is the PSN - process serial number (a unique PID-ish thingie)
- * still ok for real Darwin & when run from command line
- * for example -psn_0_9306113 */
- if(i_argc >= 2 && !strncmp( ppsz_argv[1] , "-psn" , 4 ))
- i = 2;
-#endif
- for (; i < i_argc; i++)
- if ((argv[argc++] = FromLocale (ppsz_argv[i])) == NULL)
- return 1; // BOOM!
argv[argc] = NULL;
vlc_enable_override ();
/* Initialize libvlc */
libvlc_instance_t *vlc = libvlc_new (argc, argv);
if (vlc == NULL)
- goto out;
+ return 1;
+ int ret = 1;
+ libvlc_set_exit_handler (vlc, vlc_kill, &self);
+ libvlc_set_app_id (vlc, "org.VideoLAN.VLC", PACKAGE_VERSION, PACKAGE_NAME);
libvlc_set_user_agent (vlc, "VLC media player", "VLC/"PACKAGE_VERSION);
-#if !defined (HAVE_MAEMO) && !defined __APPLE__
+ libvlc_add_intf (vlc, "hotkeys,none");
+#if !defined (__OS2__)
libvlc_add_intf (vlc, "globalhotkeys,none");
+#endif
+#ifdef HAVE_DBUS
+ libvlc_add_intf (vlc, "dbus,none");
#endif
if (libvlc_add_intf (vlc, NULL))
goto out;
libvlc_playlist_play (vlc, -1, 0, NULL);
- /* Wait for a termination signal */
- pthread_t self = pthread_self ();
- libvlc_set_exit_handler (vlc, vlc_kill, &self);
+ /* Qt4 insists on catching SIGCHLD via signal handler. To work around that,
+ * unblock it after all our child threads are created. */
+ sigdelset (&set, SIGCHLD);
+ pthread_sigmask (SIG_SETMASK, &set, NULL);
- if (signal_ignored (SIGHUP)) /* <- needed to handle nohup properly */
+ /* Do not dequeue SIGHUP if it is ignored (nohup) */
+ if (signal_ignored (SIGHUP))
sigdelset (&set, SIGHUP);
+ /* Ignore SIGPIPE */
sigdelset (&set, SIGPIPE);
int signum;
- do
- sigwait (&set, &signum);
- while (signum == SIGCHLD);
+ sigwait (&set, &signum);
/* Restore default signal behaviour after 3 seconds */
sigemptyset (&set);
pthread_sigmask (SIG_UNBLOCK, &set, NULL);
alarm (3);
+ ret = 0;
/* Cleanup */
out:
- if (vlc != NULL)
- libvlc_release (vlc);
- for (int i = 1; i < argc; i++)
- LocaleFree (argv[i]);
-
- /* Do not run exit handlers. Some of them are buggy (e.g. KDE IO scheduler)
- * and crash. Also some will crash because their library may be already
- * unloaded (dlclose()). */
- _exit (0);
+ libvlc_release (vlc);
+#ifdef __OS2__
+ for (int i = argc - i_argc; i < argc; i++)
+ free (argv[i]);
+#endif
+ return ret;
}
projects / vlc / blobdiff