1 /*****************************************************************************
2 * ntservice.c: Windows NT/2K/XP service interface
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_interface.h>
35 #define VLCSERVICENAME "VLC media player"
37 /*****************************************************************************
39 *****************************************************************************/
40 static int Activate( vlc_object_t * );
41 static void Close ( vlc_object_t * );
43 #define INSTALL_TEXT N_( "Install Windows Service" )
44 #define INSTALL_LONGTEXT N_( \
45 "Install the Service and exit." )
46 #define UNINSTALL_TEXT N_( "Uninstall Windows Service" )
47 #define UNINSTALL_LONGTEXT N_( \
48 "Uninstall the Service and exit." )
49 #define NAME_TEXT N_( "Display name of the Service" )
50 #define NAME_LONGTEXT N_( \
51 "Change the display name of the Service." )
52 #define OPTIONS_TEXT N_("Configuration options")
53 #define OPTIONS_LONGTEXT N_( \
54 "Configuration options that will be " \
55 "used by the Service (eg. --foo=bar --no-foobar). It should be specified "\
56 "at install time so the Service is properly configured.")
57 #define EXTRAINTF_TEXT N_("Extra interface modules")
58 #define EXTRAINTF_LONGTEXT N_( \
59 "Additional interfaces spawned by the " \
60 "Service. It should be specified at install time so the Service is " \
61 "properly configured. Use a comma separated list of interface modules. " \
62 "(common values are: logger, sap, rc, http)")
65 set_shortname( N_("NT Service"));
66 set_description( N_("Windows Service interface") );
67 set_category( CAT_INTERFACE );
68 set_subcategory( SUBCAT_INTERFACE_CONTROL );
69 add_bool( "ntservice-install", 0, NULL,
70 INSTALL_TEXT, INSTALL_LONGTEXT, true );
71 add_bool( "ntservice-uninstall", 0, NULL,
72 UNINSTALL_TEXT, UNINSTALL_LONGTEXT, true );
73 add_string ( "ntservice-name", VLCSERVICENAME, NULL,
74 NAME_TEXT, NAME_LONGTEXT, true );
75 add_string ( "ntservice-options", NULL, NULL,
76 OPTIONS_TEXT, OPTIONS_LONGTEXT, true );
77 add_string ( "ntservice-extraintf", NULL, NULL,
78 EXTRAINTF_TEXT, EXTRAINTF_LONGTEXT, true );
80 set_capability( "interface", 0 );
81 set_callbacks( Activate, Close );
86 SERVICE_STATUS_HANDLE hStatus;
87 SERVICE_STATUS status;
91 /*****************************************************************************
93 *****************************************************************************/
94 static void Run( intf_thread_t *p_intf );
95 static int NTServiceInstall( intf_thread_t *p_intf );
96 static int NTServiceUninstall( intf_thread_t *p_intf );
97 static void WINAPI ServiceDispatch( DWORD numArgs, char **args );
98 static void WINAPI ServiceCtrlHandler( DWORD control );
100 /* We need this global */
101 static intf_thread_t *p_global_intf;
103 /*****************************************************************************
104 * Activate: initialize and create stuff
105 *****************************************************************************/
106 static int Activate( vlc_object_t *p_this )
108 intf_thread_t *p_intf = (intf_thread_t*)p_this;
110 /* Only works on NT/2K/XP */
111 if( !IS_WINNT ) return VLC_EGENERIC;
113 p_intf->pf_run = Run;
117 /*****************************************************************************
118 * Close: destroy interface
119 *****************************************************************************/
120 void Close( vlc_object_t *p_this )
124 /*****************************************************************************
125 * Run: interface thread
126 *****************************************************************************/
127 static void Run( intf_thread_t *p_intf )
130 intf_thread_t *p_extraintf;
131 SERVICE_TABLE_ENTRY dispatchTable[] =
133 { VLCSERVICENAME, &ServiceDispatch },
137 int canc = vlc_savecancel();
138 p_global_intf = p_intf;
139 p_intf->p_sys = &sys;
140 p_intf->p_sys->psz_service = config_GetPsz( p_intf, "ntservice-name" );
141 p_intf->p_sys->psz_service = p_intf->p_sys->psz_service ?
142 p_intf->p_sys->psz_service : strdup(VLCSERVICENAME);
144 if( config_GetInt( p_intf, "ntservice-install" ) )
146 NTServiceInstall( p_intf );
150 if( config_GetInt( p_intf, "ntservice-uninstall" ) )
152 NTServiceUninstall( p_intf );
156 if( StartServiceCtrlDispatcher( dispatchTable ) == 0 )
158 msg_Err( p_intf, "StartServiceCtrlDispatcher failed" ); /* str review */
161 free( p_intf->p_sys->psz_service );
163 /* Stop and destroy the interfaces we spawned */
164 while( (p_extraintf = vlc_object_find(p_intf, VLC_OBJECT_INTF, FIND_CHILD)))
166 intf_StopThread( p_extraintf );
167 vlc_object_detach( p_extraintf );
168 vlc_object_release( p_extraintf );
169 vlc_object_release( p_extraintf );
172 /* Make sure we exit (In case other interfaces have been spawned) */
173 vlc_object_kill( p_intf->p_libvlc );
174 vlc_restorecancel( canc );
177 /*****************************************************************************
178 * NT Service utility functions
179 *****************************************************************************/
180 static int NTServiceInstall( intf_thread_t *p_intf )
182 intf_sys_t *p_sys = p_intf->p_sys;
183 char psz_path[10*MAX_PATH], psz_pathtmp[MAX_PATH], *psz_extra;
184 SC_HANDLE handle = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );
188 "could not connect to Services Control Manager database" );
192 /* Find out the filename of ourselves so we can install it to the
193 * service control manager */
194 GetModuleFileName( NULL, psz_pathtmp, MAX_PATH );
195 sprintf( psz_path, "\"%s\" -I "MODULE_STRING, psz_pathtmp );
197 psz_extra = config_GetPsz( p_intf, "ntservice-extraintf" );
198 if( psz_extra && *psz_extra )
200 strcat( psz_path, " --ntservice-extraintf " );
201 strcat( psz_path, psz_extra );
205 psz_extra = config_GetPsz( p_intf, "ntservice-options" );
206 if( psz_extra && *psz_extra )
208 strcat( psz_path, " " );
209 strcat( psz_path, psz_extra );
214 CreateService( handle, p_sys->psz_service, p_sys->psz_service,
215 GENERIC_READ | GENERIC_EXECUTE,
216 SERVICE_WIN32_OWN_PROCESS,
217 SERVICE_AUTO_START, SERVICE_ERROR_IGNORE,
218 psz_path, NULL, NULL, NULL, NULL, NULL );
219 if( service == NULL )
221 if( GetLastError() != ERROR_SERVICE_EXISTS )
223 msg_Err( p_intf, "could not create new service: \"%s\" (%s)",
224 p_sys->psz_service ,psz_path );
225 CloseServiceHandle( handle );
230 msg_Warn( p_intf, "service \"%s\" already exists",
231 p_sys->psz_service );
236 msg_Warn( p_intf, "service successfuly created" );
239 if( service ) CloseServiceHandle( service );
240 CloseServiceHandle( handle );
245 static int NTServiceUninstall( intf_thread_t *p_intf )
247 intf_sys_t *p_sys = p_intf->p_sys;
249 SC_HANDLE handle = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );
253 "could not connect to Services Control Manager database" );
257 /* First, open a handle to the service */
258 SC_HANDLE service = OpenService( handle, p_sys->psz_service, DELETE );
259 if( service == NULL )
261 msg_Err( p_intf, "could not open service" );
262 CloseServiceHandle( handle );
266 /* Remove the service */
267 if( !DeleteService( service ) )
269 msg_Err( p_intf, "could not delete service \"%s\"",
270 p_sys->psz_service );
274 msg_Dbg( p_intf, "service deleted successfuly" );
277 CloseServiceHandle( service );
278 CloseServiceHandle( handle );
283 static void WINAPI ServiceDispatch( DWORD numArgs, char **args )
285 intf_thread_t *p_intf = (intf_thread_t *)p_global_intf;
286 intf_sys_t *p_sys = p_intf->p_sys;
287 char *psz_modules, *psz_parser;
289 /* We have to initialize the service-specific stuff */
290 memset( &p_sys->status, 0, sizeof(SERVICE_STATUS) );
291 p_sys->status.dwServiceType = SERVICE_WIN32;
292 p_sys->status.dwCurrentState = SERVICE_START_PENDING;
293 p_sys->status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
296 RegisterServiceCtrlHandler( p_sys->psz_service, &ServiceCtrlHandler );
297 if( p_sys->hStatus == (SERVICE_STATUS_HANDLE)0 )
299 msg_Err( p_intf, "failed to register service control handler" );
304 * Load background interfaces
306 psz_modules = config_GetPsz( p_intf, "ntservice-extraintf" );
307 psz_parser = psz_modules;
308 while( psz_parser && *psz_parser )
310 char *psz_module, *psz_temp;
311 psz_module = psz_parser;
312 psz_parser = strchr( psz_module, ',' );
318 psz_temp = (char *)malloc( strlen(psz_module) + sizeof(",none") );
321 intf_thread_t *p_new_intf;
322 sprintf( psz_temp, "%s,none", psz_module );
324 /* Try to create the interface */
325 p_new_intf = intf_Create( p_intf, psz_temp );
326 if( p_new_intf == NULL )
328 msg_Err( p_intf, "interface \"%s\" initialization failed",
334 /* Try to run the interface */
335 if( intf_RunThread( p_new_intf ) )
337 vlc_object_detach( p_new_intf );
338 vlc_object_release( p_new_intf );
339 msg_Err( p_intf, "interface \"%s\" cannot run", psz_temp );
347 /* Initialization complete - report running status */
348 p_sys->status.dwCurrentState = SERVICE_RUNNING;
349 p_sys->status.dwCheckPoint = 0;
350 p_sys->status.dwWaitHint = 0;
352 SetServiceStatus( p_sys->hStatus, &p_sys->status );
355 static void WINAPI ServiceCtrlHandler( DWORD control )
357 intf_thread_t *p_intf = (intf_thread_t *)p_global_intf;
358 intf_sys_t *p_sys = p_intf->p_sys;
362 case SERVICE_CONTROL_SHUTDOWN:
363 case SERVICE_CONTROL_STOP:
364 p_sys->status.dwCurrentState = SERVICE_STOPPED;
365 p_sys->status.dwWin32ExitCode = 0;
366 p_sys->status.dwCheckPoint = 0;
367 p_sys->status.dwWaitHint = 0;
369 case SERVICE_CONTROL_INTERROGATE:
370 /* just set the current state to whatever it is... */
374 SetServiceStatus( p_sys->hStatus, &p_sys->status );