Commit fdebecee authored by Sylvain Cadhillac's avatar Sylvain Cadhillac
Browse files

An interface to run extern programs (such as shutdown)

parent 68f7b2b3
......@@ -953,7 +953,7 @@ test "${enable_cprof}" != "yes" && enable_cprof="no"
dnl
dnl default modules
dnl
VLC_ADD_PLUGINS([dummy logger memcpy])
VLC_ADD_PLUGINS([dummy logger memcpy externrun])
VLC_ADD_PLUGINS([mpgv mpga m4v m4a h264 ps pva avi asf aac mp4 rawdv nsv real aiff mjpeg demuxdump flac])
VLC_ADD_PLUGINS([cvdsub svcdsub spudec subsdec dvbsub mpeg_audio lpcm a52 dts cinepak flacdec])
VLC_ADD_PLUGINS([deinterlace invert adjust transform distort motionblur])
......@@ -4373,6 +4373,7 @@ AC_CONFIG_FILES([
modules/gui/wince/Makefile
modules/misc/Makefile
modules/misc/dummy/Makefile
modules/misc/externrun/Makefile
modules/misc/memcpy/Makefile
modules/misc/network/Makefile
modules/misc/testsuite/Makefile
......
......@@ -115,6 +115,9 @@ struct demux_sys_t
/* Used for the pause command */
mtime_t expiration;
/* The command to run */
char* psz_command;
};
enum
{
......@@ -122,6 +125,7 @@ enum
COMMAND_QUIT = 1,
COMMAND_LOOP = 2,
COMMAND_PAUSE= 3,
COMMAND_RUN = 4,
};
static int Demux( demux_t * );
......@@ -177,6 +181,16 @@ int E_(OpenDemux) ( vlc_object_t *p_this )
p_sys->expiration = mdate() + (mtime_t)i_arg * (mtime_t)1000000;
return VLC_SUCCESS;
}
/* Check for a "vlc:run:***" command */
if ( i_len > 4 && !strncasecmp( psz_name, "run:", 4 ) )
{
p_sys->psz_command = malloc( i_len - 4 );
strcpy( p_sys->psz_command, psz_name + 4 );
msg_Info( p_demux, "command `run program %s'", p_sys->psz_command );
p_sys->i_command = COMMAND_RUN;
return VLC_SUCCESS;
}
msg_Err( p_demux, "unknown command `%s'", psz_name );
......@@ -227,11 +241,17 @@ static int Demux( demux_t *p_demux )
else
msleep( 10000 );
break;
case COMMAND_RUN:
var_SetString( p_playlist, "run-program-command", p_sys->psz_command );
free( p_sys->psz_command );
b_eof = VLC_TRUE;
break;
case COMMAND_NOP:
default:
b_eof = VLC_TRUE;
break;
break;
}
vlc_object_release( p_playlist );
......
SOURCES_externrun = \
externrun.c \
$(NULL)
/*****************************************************************************
* externrun.c: Run extern programs (vlc:run:"theprogram":delayinseconds)
*****************************************************************************
* Copyright (C) 2004 VideoLAN
*
* Authors: Sylvain Cadilhac <sylv@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <vlc/vlc.h>
#include <vlc/intf.h>
#include <string.h>
#if defined( WIN32 )
#include <windows.h>
#endif
/*****************************************************************************
* run_command_t: a command and its delay
*****************************************************************************/
struct run_command_t
{
int i_delay;
char *psz_torun;
struct run_command_t *p_next;
};
typedef struct run_command_t run_command_t;
/*****************************************************************************
* intf_sys_t: description and status of FB interface
*****************************************************************************/
struct intf_sys_t
{
vlc_mutex_t change_lock;
mtime_t next_check;
run_command_t *p_first_command;
run_command_t *p_last_command;
};
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
static void Run ( intf_thread_t * );
static int AddRunCommand( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_category( CAT_INTERFACE );
set_description( _("Execution of extern programs interface function") );
set_capability( "interface", 0 );
set_callbacks( Open, Close );
vlc_module_end();
/*****************************************************************************
* Open: initialize interface
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
intf_thread_t *p_intf = (intf_thread_t *)p_this;
/* Search for the Playlist object */
playlist_t *p_playlist;
p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
if( p_playlist == NULL )
{
msg_Err( p_intf, "we are not attached to a playlist" );
return 1;
}
/* Allocate instance and initialize some members */
p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
if( p_intf->p_sys == NULL )
{
msg_Err( p_intf, "out of memory" );
return 1;
}
vlc_mutex_init( p_intf, &p_intf->p_sys->change_lock );
var_Create( p_playlist, "run-program-command", VLC_VAR_STRING );
p_intf->p_sys->p_first_command = NULL;
p_intf->p_sys->p_last_command = NULL;
p_intf->pf_run = Run;
var_AddCallback( p_playlist, "run-program-command", AddRunCommand, p_intf );
vlc_object_release( p_playlist );
return 0;
}
/*****************************************************************************
* Close: destroy interface
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
intf_thread_t *p_intf = (intf_thread_t *)p_this;
playlist_t *p_playlist;
p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
if( p_playlist == NULL )
{
msg_Err( p_intf, "we are not attached to a playlist" );
return;
}
var_Destroy( p_playlist, "run-program-command" );
vlc_object_release( p_playlist );
run_command_t *p_command = p_intf->p_sys->p_first_command;
run_command_t *p_next;
while( p_command )
{
p_next = p_command->p_next;
free( p_command->psz_torun );
free( p_command );
p_command = p_next;
}
/* Destroy structure */
free( p_intf->p_sys );
}
/*****************************************************************************
* Run: main loop
*****************************************************************************/
static void Run( intf_thread_t *p_intf )
{
p_intf->p_sys->next_check = mdate() + 1000000;
run_command_t *p_command;
run_command_t *p_previous;
while( !p_intf->b_die )
{
vlc_mutex_lock( &p_intf->p_sys->change_lock );
p_command = p_intf->p_sys->p_first_command;
p_previous = NULL;
while( p_command )
{
if( p_command->i_delay > 0 )
{
p_command->i_delay--;
p_previous = p_command;
p_command = p_previous->p_next;
}
else
{
msg_Info( p_intf, "running %s", p_command->psz_torun );
#if defined( WIN32 )
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
if( !CreateProcess( NULL, p_command->psz_torun, NULL, NULL,
FALSE, 0, NULL, NULL, &si, &pi ) )
{
msg_Err( p_intf, "can't run \"%s\"", p_command->psz_torun );
}
#else
if ( fork() )
{
execl( p_command->psz_torun, NULL, (char *)NULL );
}
#endif
if( p_previous )
{
p_previous->p_next = p_command->p_next;
free( p_command->psz_torun );
free( p_command );
p_command = p_previous->p_next;
}
else
{
p_intf->p_sys->p_first_command = p_command->p_next;
free( p_command->psz_torun );
free( p_command );
if ( p_intf->p_sys->p_last_command == p_command )
{
p_intf->p_sys->p_last_command = p_command->p_next;
}
p_command = p_intf->p_sys->p_first_command;
}
}
}
vlc_mutex_unlock( &p_intf->p_sys->change_lock );
mwait( p_intf->p_sys->next_check );
p_intf->p_sys->next_check += 1000000;
}
return VLC_SUCCESS;
}
/*****************************************************************************
*
*****************************************************************************/
static int AddRunCommand( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
intf_thread_t *p_intf = (intf_thread_t *)p_data;
char *psz_command = NULL;
int i_delay = 0;
char *psz_delay = strrchr( newval.psz_string, ':' );
if ( psz_delay )
{
char *psz_err;
i_delay = ( int )strtol( psz_delay + 1, &psz_err, 10 );
if ( *psz_err == 0 )
{
psz_command = malloc( psz_delay - newval.psz_string );
if ( psz_command == NULL )
{
msg_Err( p_intf, "out of memory: can't add run command" );
return VLC_EGENERIC;
}
strncpy( psz_command, newval.psz_string, psz_delay - newval.psz_string );
psz_command[ psz_delay - newval.psz_string ] = '\0';
}
}
if ( !psz_command )
{
psz_command = malloc( strlen( newval.psz_string ) + 1 );
strcpy( psz_command, newval.psz_string );
}
run_command_t *p_command = malloc( sizeof( run_command_t ) );
if ( p_command == NULL )
{
msg_Err( p_intf, "out of memory: can't add run command" );
return VLC_EGENERIC;
}
p_command->i_delay = i_delay;
p_command->p_next = NULL;
p_command->psz_torun = psz_command;
msg_Info( p_intf, "will run %s in %d seconds", psz_command, i_delay );
vlc_mutex_lock( &p_intf->p_sys->change_lock );
if ( p_intf->p_sys->p_last_command )
{
p_intf->p_sys->p_last_command->p_next = p_command;
p_intf->p_sys->p_last_command = p_command;
}
else
{
p_intf->p_sys->p_last_command = p_command;
p_intf->p_sys->p_first_command = p_command;
}
vlc_mutex_unlock( &p_intf->p_sys->change_lock );
return VLC_SUCCESS;
}
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