1 /*****************************************************************************
2 * ntservice.c: Windows NT/2K/XP service interface
3 *****************************************************************************
4 * Copyright (C) 2004 VideoLAN
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #define VLCSERVICENAME "VLC media player"
33 /*****************************************************************************
35 *****************************************************************************/
36 static int Activate( vlc_object_t * );
37 static void Close ( vlc_object_t * );
39 #define INSTALL_TEXT N_( "Install Windows Service" )
40 #define INSTALL_LONGTEXT N_( \
41 "If enabled the interface will install the Service and exit." )
42 #define UNINSTALL_TEXT N_( "Uninstall Windows Service" )
43 #define UNINSTALL_LONGTEXT N_( \
44 "If enabled the interface will uninstall the Service and exit." )
45 #define NAME_TEXT N_( "Display name of the Service" )
46 #define NAME_LONGTEXT N_( \
47 "This allows you to change the display name of the Service." )
48 #define EXTRAINTF_TEXT N_("Extra interface modules")
49 #define EXTRAINTF_LONGTEXT N_( \
50 "This option allows you to select additional interfaces spawned by the " \
51 "Service. It should be specified at install time so the Service is " \
52 "properly configured. Use a comma separated list of interface modules. " \
53 "(common values are: logger, sap, rc, http)")
56 set_description( _("Windows Service interface") );
57 add_bool( "ntservice-install", 0, NULL,
58 INSTALL_TEXT, INSTALL_LONGTEXT, VLC_TRUE );
59 add_bool( "ntservice-uninstall", 0, NULL,
60 UNINSTALL_TEXT, UNINSTALL_LONGTEXT, VLC_TRUE );
61 add_string ( "ntservice-name", VLCSERVICENAME, NULL,
62 NAME_TEXT, NAME_LONGTEXT, VLC_TRUE );
63 add_string ( "ntservice-extraintf", NULL, NULL,
64 EXTRAINTF_TEXT, EXTRAINTF_LONGTEXT, VLC_TRUE );
66 set_capability( "interface", 0 );
67 set_callbacks( Activate, Close );
72 SERVICE_STATUS_HANDLE hStatus;
73 SERVICE_STATUS status;
77 /*****************************************************************************
79 *****************************************************************************/
80 static void Run( intf_thread_t *p_intf );
81 static int NTServiceInstall( intf_thread_t *p_intf );
82 static int NTServiceUninstall( intf_thread_t *p_intf );
83 static void WINAPI ServiceDispatch( DWORD numArgs, char **args );
84 static void WINAPI ServiceCtrlHandler( DWORD control );
86 /* We need this global */
87 static intf_thread_t *p_global_intf;
89 /*****************************************************************************
90 * Activate: initialize and create stuff
91 *****************************************************************************/
92 static int Activate( vlc_object_t *p_this )
94 intf_thread_t *p_intf = (intf_thread_t*)p_this;
96 /* Only works on NT/2K/XP */
97 if( !IS_WINNT ) return VLC_EGENERIC;
103 /*****************************************************************************
104 * Close: destroy interface
105 *****************************************************************************/
106 void Close( vlc_object_t *p_this )
110 /*****************************************************************************
111 * Run: interface thread
112 *****************************************************************************/
113 static void Run( intf_thread_t *p_intf )
115 SERVICE_TABLE_ENTRY dispatchTable[] =
117 { VLCSERVICENAME, &ServiceDispatch },
121 p_global_intf = p_intf;
122 p_intf->p_sys = alloca( sizeof( intf_sys_t ) );
123 p_intf->p_sys->psz_service = config_GetPsz( p_intf, "ntservice-name" );
124 p_intf->p_sys->psz_service = p_intf->p_sys->psz_service ?
125 p_intf->p_sys->psz_service : strdup(VLCSERVICENAME);
127 if( config_GetInt( p_intf, "ntservice-install" ) )
129 NTServiceInstall( p_intf );
133 if( config_GetInt( p_intf, "ntservice-uninstall" ) )
135 NTServiceUninstall( p_intf );
139 if( StartServiceCtrlDispatcher( dispatchTable ) == 0 )
141 msg_Err( p_intf, "StartServiceCtrlDispatcher failed" );
144 free( p_intf->p_sys->psz_service );
146 /* Make sure we exit (In case other interfaces have been spawned) */
147 p_intf->p_vlc->b_die = VLC_TRUE;
150 /*****************************************************************************
151 * NT Service utility functions
152 *****************************************************************************/
153 static int NTServiceInstall( intf_thread_t *p_intf )
155 intf_sys_t *p_sys = p_intf->p_sys;
156 char psz_path[MAX_PATH], psz_pathtmp[MAX_PATH], *psz_extraintf;
157 SC_HANDLE handle = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );
160 msg_Err( p_intf, "could not connect to SCM database" );
164 /* Find out the filename of ourselves so we can install it to the
165 * service control manager */
166 GetModuleFileName( NULL, psz_pathtmp, MAX_PATH );
167 sprintf( psz_path, "\"%s\" -I "MODULE_STRING, psz_pathtmp );
169 psz_extraintf = config_GetPsz( p_intf, "ntservice-extraintf" );
170 if( psz_extraintf && *psz_extraintf )
172 strcat( psz_path, " --ntservice-extraintf " );
173 strcat( psz_path, psz_extraintf );
175 if( psz_extraintf ) free( psz_extraintf );
178 CreateService( handle, p_sys->psz_service, p_sys->psz_service,
179 GENERIC_READ | GENERIC_EXECUTE,
180 SERVICE_WIN32_OWN_PROCESS,
181 SERVICE_AUTO_START, SERVICE_ERROR_IGNORE,
182 psz_path, NULL, NULL, NULL, NULL, NULL );
183 if( service == NULL )
185 if( GetLastError() != ERROR_SERVICE_EXISTS )
187 msg_Err( p_intf, "could not create new service: \"%s\" (%s)",
188 p_sys->psz_service ,psz_path );
189 CloseServiceHandle( handle );
194 msg_Warn( p_intf, "service \"%s\" already exists",
195 p_sys->psz_service );
200 msg_Warn( p_intf, "service successfuly created" );
203 if( service ) CloseServiceHandle( service );
204 CloseServiceHandle( handle );
209 static int NTServiceUninstall( intf_thread_t *p_intf )
211 intf_sys_t *p_sys = p_intf->p_sys;
213 SC_HANDLE handle = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );
216 msg_Err( p_intf, "could not connect to SCM database" );
220 /* First, open a handle to the service */
221 SC_HANDLE service = OpenService( handle, p_sys->psz_service, DELETE );
222 if( service == NULL )
224 msg_Err( p_intf, "could not open service" );
225 CloseServiceHandle( handle );
229 /* Remove the service */
230 if( !DeleteService( service ) )
232 msg_Err( p_intf, "could not delete service \"%s\"",
233 p_sys->psz_service );
237 msg_Dbg( p_intf, "service deleted successfuly" );
240 CloseServiceHandle( service );
241 CloseServiceHandle( handle );
246 static void WINAPI ServiceDispatch( DWORD numArgs, char **args )
248 intf_thread_t *p_intf = (intf_thread_t *)p_global_intf;
249 intf_sys_t *p_sys = p_intf->p_sys;
250 char *psz_modules, *psz_parser;
252 /* We have to initialize the service-specific stuff */
253 memset( &p_sys->status, 0, sizeof(SERVICE_STATUS) );
254 p_sys->status.dwServiceType = SERVICE_WIN32;
255 p_sys->status.dwCurrentState = SERVICE_START_PENDING;
256 p_sys->status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
259 RegisterServiceCtrlHandler( p_sys->psz_service, &ServiceCtrlHandler );
260 if( p_sys->hStatus == (SERVICE_STATUS_HANDLE)0 )
262 msg_Err( p_intf, "failed to register service control handler" );
267 * Load background interfaces
269 psz_modules = config_GetPsz( p_intf, "ntservice-extraintf" );
270 psz_parser = psz_modules;
271 while( psz_parser && *psz_parser )
273 char *psz_module, *psz_temp;
274 psz_module = psz_parser;
275 psz_parser = strchr( psz_module, ',' );
281 psz_temp = (char *)malloc( strlen(psz_module) + sizeof(",none") );
284 intf_thread_t *p_new_intf;
285 sprintf( psz_temp, "%s,none", psz_module );
287 /* Try to create the interface */
288 p_new_intf = intf_Create( p_intf, psz_temp );
289 if( p_new_intf == NULL )
291 msg_Err( p_intf, "interface \"%s\" initialization failed",
297 /* Try to run the interface */
298 p_new_intf->b_block = VLC_FALSE;
299 if( intf_RunThread( p_new_intf ) )
301 vlc_object_detach( p_new_intf );
302 intf_Destroy( p_new_intf );
303 msg_Err( p_intf, "interface \"%s\" cannot run", psz_temp );
314 /* Initialization complete - report running status */
315 p_sys->status.dwCurrentState = SERVICE_RUNNING;
316 p_sys->status.dwCheckPoint = 0;
317 p_sys->status.dwWaitHint = 0;
319 SetServiceStatus( p_sys->hStatus, &p_sys->status );
322 static void WINAPI ServiceCtrlHandler( DWORD control )
324 intf_thread_t *p_intf = (intf_thread_t *)p_global_intf;
325 intf_sys_t *p_sys = p_intf->p_sys;
329 case SERVICE_CONTROL_SHUTDOWN:
330 case SERVICE_CONTROL_STOP:
331 p_sys->status.dwCurrentState = SERVICE_STOPPED;
332 p_sys->status.dwWin32ExitCode = 0;
333 p_sys->status.dwCheckPoint = 0;
334 p_sys->status.dwWaitHint = 0;
336 case SERVICE_CONTROL_INTERROGATE:
337 /* just set the current state to whatever it is... */
341 SetServiceStatus( p_sys->hStatus, &p_sys->status );