/*****************************************************************************
* main: parse command line, start interface and spawn threads.
*****************************************************************************/
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.
* 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. */
signal (SIGCHLD, SIG_DFL);
#ifdef HAVE_SETENV
# 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
/* 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)
{
fprintf (stderr, "VLC is not supposed to be run as root. Sorry.\n"
"If you need to use real-time priorities and/or privileged TCP ports\n"
"you can use %s-wrapper (make sure it is Set-UID root and\n"
"cannot be run by non-trusted users first).\n", ppsz_argv[0]);
return 1;
}
#endif
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
/* Synchronously intercepted POSIX signals.
*
* 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.
*
* Signal 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.
* Note that we set the signals after the vlc_create call. */
static const int sigs[] = {
SIGINT, SIGHUP, SIGQUIT, 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, SIGCHLD
};
sigset_t set;
sigemptyset (&set);
for (unsigned i = 0; i < sizeof (sigs) / sizeof (sigs[0]); i++)
sigaddset (&set, sigs[i]);
#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);
sigdelset (&set, SIGPIPE);
sigdelset (&set, SIGCHLD);
/* Note that FromLocale() can be used before libvlc is initialized */
const char *argv[i_argc + 3];
int argc = 0;
argv[argc++] = "--no-ignore-config";
#ifdef TOP_BUILDDIR
argv[argc++] = FromLocale ("--plugin-path="TOP_BUILDDIR"/modules");
#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)
{
libvlc_set_user_agent (vlc, "VLC media player", NULL);
if (libvlc_add_intf (vlc, "signals"))
pthread_sigmask (SIG_UNBLOCK, &set, NULL);
#if !defined (HAVE_MAEMO) && !defined __APPLE__
libvlc_add_intf (vlc, "globalhotkeys,none");
#endif
if (libvlc_add_intf (vlc, NULL) == 0)
{
libvlc_playlist_play (vlc, -1, 0, NULL);
libvlc_wait (vlc);
}
libvlc_release (vlc);
}
for (int i = 1; i < argc; i++)
LocaleFree (argv[i]);
return 0;
}
/*****************************************************************************
* main: parse command line, start interface and spawn threads.
*****************************************************************************/
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.
* 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 SIGCHLD in case our parent process ignores it. */
signal (SIGCHLD, SIG_DFL);
#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
#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");
#ifndef ALLOW_RUN_AS_ROOT
if (geteuid () == 0)
{
fprintf (stderr, "VLC is not supposed to be run as root. Sorry.\n"
"If you need to use real-time priorities and/or privileged TCP ports\n"
"you can use %s-wrapper (make sure it is Set-UID root and\n"
"cannot be run by non-trusted users first).\n", ppsz_argv[0]);
return 1;
}
#endif
setlocale (LC_ALL, "");
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);
/* 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).
*
* 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.
*
* 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, SIGHUP);
sigaddset (&set, SIGQUIT);
sigaddset (&set, SIGTERM);
/* 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);
/* Block all these signals */
pthread_t self = pthread_self ();
pthread_sigmask (SIG_SETMASK, &set, NULL);
const char *argv[i_argc + 3];
int argc = 0;
argv[argc++] = "--no-ignore-config";
argv[argc++] = "--media-library";
argv[argc++] = "--stats";
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
argv[argc] = NULL;
vlc_enable_override ();
/* Initialize libvlc */
libvlc_instance_t *vlc = libvlc_new (argc, argv);
if (vlc == NULL)
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);
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);
/* 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);
/* Do not dequeue SIGHUP if it is ignored (nohup) */
if (signal_ignored (SIGHUP))
sigdelset (&set, SIGHUP);
/* Ignore SIGPIPE */
sigdelset (&set, SIGPIPE);
int signum;
sigwait (&set, &signum);
/* Restore default signal behaviour after 3 seconds */
sigemptyset (&set);
sigaddset (&set, SIGINT);
sigaddset (&set, SIGALRM);
signal (SIGINT, SIG_IGN);
signal (SIGALRM, exit_timeout);
pthread_sigmask (SIG_UNBLOCK, &set, NULL);
alarm (3);
ret = 0;
/* Cleanup */
out:
libvlc_release (vlc);
#ifdef __OS2__
for (int i = argc - i_argc; i < argc; i++)
free (argv[i]);
#endif
return ret;
}
QString VlcInstance::changeset()
{
// Returns libvlc changeset
return QString(libvlc_get_changeset());
}
jstring Java_org_videolan_libvlc_LibVLC_changeset(JNIEnv* env, jobject thiz)
{
return (*env)->NewStringUTF(env, libvlc_get_changeset());
}
/*****************************************************************************
* main: parse command line, start interface and spawn threads.
*****************************************************************************/
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.
* 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 SIGCHLD in case our parent process ignores it. */
signal (SIGCHLD, SIG_DFL);
#ifndef NDEBUG
/* Activate malloc checking routines to detect heap corruptions. */
setenv ("MALLOC_CHECK_", "2", 1);
#endif
#ifdef TOP_BUILDDIR
setenv ("VLC_PLUGIN_PATH", TOP_BUILDDIR"/modules", 1);
setenv ("VLC_DATA_PATH", TOP_SRCDIR"/share", 1);
#endif
#ifndef ALLOW_RUN_AS_ROOT
if (geteuid () == 0)
{
fprintf (stderr, "VLC is not supposed to be run as root. Sorry.\n"
"If you need to use real-time priorities and/or privileged TCP ports\n"
"you can use %s-wrapper (make sure it is Set-UID root and\n"
"cannot be run by non-trusted users first).\n", ppsz_argv[0]);
return 1;
}
#endif
setlocale (LC_ALL, "");
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);
/* 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).
*
* 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.
*
* 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, SIGHUP);
sigaddset (&set, SIGQUIT);
sigaddset (&set, SIGTERM);
/* 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);
/* Block all these signals */
pthread_t self = pthread_self ();
pthread_sigmask (SIG_SETMASK, &set, NULL);
const char *argv[i_argc + 3];
int argc = 0;
argv[argc++] = "--no-ignore-config";
argv[argc++] = "--media-library";
argv[argc++] = "--stats";
/* overwrite system language on Mac */
#if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR // TARGET_OS_MAC is unspecific
char *lang = NULL;
for (int i = 0; i < i_argc; i++) {
if (!strncmp(ppsz_argv[i], "--language", 10)) {
lang = strstr(ppsz_argv[i], "=");
ppsz_argv++, i_argc--;
continue;
}
}
if (lang && strncmp( lang, "auto", 4 )) {
char tmp[11];
snprintf(tmp, 11, "LANG%s", lang);
putenv(tmp);
}
if (!lang) {
CFStringRef language;
language = (CFStringRef)CFPreferencesCopyAppValue(CFSTR("language"),
kCFPreferencesCurrentApplication);
if (language) {
CFIndex length = CFStringGetLength(language) + 1;
if (length > 0) {
CFIndex maxSize = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
lang = (char *)malloc(maxSize);
CFStringGetCString(language, lang, maxSize - 1, kCFStringEncodingUTF8);
}
if (strncmp( lang, "auto", 4 )) {
char tmp[11];
snprintf(tmp, 11, "LANG=%s", lang);
putenv(tmp);
}
CFRelease(language);
}
}
#endif
ppsz_argv++; i_argc--; /* skip executable path */
/* 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 >= 1 && !strncmp (*ppsz_argv, "-psn" , 4))
ppsz_argv++, i_argc--;
memcpy (argv + argc, ppsz_argv, i_argc * sizeof (*argv));
argc += i_argc;
argv[argc] = NULL;
vlc_enable_override ();
/* Initialize libvlc */
libvlc_instance_t *vlc = libvlc_new (argc, argv);
if (vlc == NULL)
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);
libvlc_add_intf (vlc, "hotkeys,none");
if (libvlc_add_intf (vlc, NULL))
goto out;
libvlc_playlist_play (vlc, -1, 0, NULL);
/* 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);
/* Do not dequeue SIGHUP if it is ignored (nohup) */
if (signal_ignored (SIGHUP))
sigdelset (&set, SIGHUP);
/* Ignore SIGPIPE */
sigdelset (&set, SIGPIPE);
int signum;
sigwait (&set, &signum);
/* Restore default signal behaviour after 3 seconds */
sigemptyset (&set);
sigaddset (&set, SIGINT);
sigaddset (&set, SIGALRM);
signal (SIGINT, SIG_IGN);
signal (SIGALRM, exit_timeout);
pthread_sigmask (SIG_UNBLOCK, &set, NULL);
alarm (3);
ret = 0;
/* Cleanup */
out:
libvlc_release (vlc);
return ret;
}
