dlls/schedsvc/svc_main.c

   1 /*
   2  * Task Scheduler Service
   3  *
   4  * Copyright 2014 Dmitry Timoshkov
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winsvc.h"
  26 #include "rpc.h"
  27 #include "atsvc.h"
  28 #include "schrpc.h"
  29 #include "wine/debug.h"
  30
  31 #include "schedsvc_private.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(schedsvc);
  34
  35 static const WCHAR scheduleW[] = {'S','c','h','e','d','u','l','e',0};
  36 static SERVICE_STATUS_HANDLE schedsvc_handle;
  37 static HANDLE done_event, hjob_queue;
  38
  39 void add_process_to_queue(HANDLE process)
  40 {
  41     if (!AssignProcessToJobObject(hjob_queue, process))
  42         ERR("AssignProcessToJobObject failed\n");
  43 }
  44
  45 static DWORD WINAPI tasks_monitor_thread(void *arg)
  46 {
  47     static const WCHAR tasksW[] = { '\\','T','a','s','k','s','\\',0 };
  48     WCHAR path[MAX_PATH];
  49     HANDLE htasks, hport, htimer;
  50     JOBOBJECT_ASSOCIATE_COMPLETION_PORT job_info;
  51     OVERLAPPED ov;
  52     LARGE_INTEGER period;
  53     struct
  54     {
  55         FILE_NOTIFY_INFORMATION data;
  56         WCHAR name_buffer[MAX_PATH];
  57     } info;
  58
  59     /* the buffer must be DWORD aligned */
  60     C_ASSERT(!(sizeof(info) & 3));
  61
  62     TRACE("Starting...\n");
  63
  64     load_at_tasks();
  65     check_missed_task_time();
  66
  67     htimer = CreateWaitableTimerW(NULL, FALSE, NULL);
  68     if (htimer == NULL)
  69     {
  70         ERR("CreateWaitableTimer failed\n");
  71         return -1;
  72     }
  73
  74     GetWindowsDirectoryW(path, MAX_PATH);
  75     lstrcatW(path, tasksW);
  76
  77     /* Just in case it's an old Wine prefix with missing c:\windows\tasks */
  78     CreateDirectoryW(path, NULL);
  79
  80     htasks = CreateFileW(path, FILE_LIST_DIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
  81                          NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, NULL);
  82     if (htasks == INVALID_HANDLE_VALUE)
  83     {
  84         ERR("Couldn't start monitoring %s for tasks, error %u\n", debugstr_w(path), GetLastError());
  85         return -1;
  86     }
  87
  88     hjob_queue = CreateJobObjectW(NULL, NULL);
  89     if (!hjob_queue)
  90     {
  91         ERR("CreateJobObject failed\n");
  92         return -1;
  93     }
  94
  95     hport = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 1);
  96     if (!hport)
  97     {
  98         ERR("CreateIoCompletionPort failed\n");
  99         return -1;
 100     }
 101
 102     job_info.CompletionKey = hjob_queue;
 103     job_info.CompletionPort = hport;
 104     if (!SetInformationJobObject(hjob_queue, JobObjectAssociateCompletionPortInformation, &job_info, sizeof(job_info)))
 105     {
 106         ERR("SetInformationJobObject failed\n");
 107         return -1;
 108     }
 109
 110     memset(&ov, 0, sizeof(ov));
 111     ov.hEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
 112
 113     memset(&info, 0, sizeof(info));
 114     ReadDirectoryChangesW(htasks, &info, sizeof(info), FALSE,
 115                           FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE,
 116                           NULL, &ov, NULL);
 117
 118     for (;;)
 119     {
 120         HANDLE events[4];
 121         DWORD ret;
 122
 123         events[0] = done_event;
 124         events[1] = htimer;
 125         events[2] = hport;
 126         events[3] = ov.hEvent;
 127
 128         ret = WaitForMultipleObjects(4, events, FALSE, INFINITE);
 129         /* Done event */
 130         if (ret == WAIT_OBJECT_0) break;
 131
 132         /* Next runtime timer */
 133         if (ret == WAIT_OBJECT_0 + 1)
 134         {
 135             check_task_time();
 136             continue;
 137         }
 138
 139         /* Job queue */
 140         if (ret == WAIT_OBJECT_0 + 2)
 141         {
 142             DWORD msg;
 143             ULONG_PTR dummy, pid;
 144
 145             if (GetQueuedCompletionStatus(hport, &msg, &dummy, (OVERLAPPED **)&pid, 0))
 146             {
 147                 if (msg == JOB_OBJECT_MSG_EXIT_PROCESS)
 148                 {
 149                     TRACE("got message: process %#lx has terminated\n", pid);
 150                     update_process_status(pid);
 151                 }
 152                 else
 153                     FIXME("got message %#x from the job\n", msg);
 154             }
 155             continue;
 156         }
 157
 158         if (info.data.NextEntryOffset)
 159             FIXME("got multiple entries\n");
 160
 161         /* Directory change notification */
 162         info.data.FileName[info.data.FileNameLength/sizeof(WCHAR)] = 0;
 163
 164         switch (info.data.Action)
 165         {
 166         case FILE_ACTION_ADDED:
 167             TRACE("FILE_ACTION_ADDED %s\n", debugstr_w(info.data.FileName));
 168
 169             GetWindowsDirectoryW(path, MAX_PATH);
 170             lstrcatW(path, tasksW);
 171             lstrcatW(path, info.data.FileName);
 172             add_job(path);
 173             break;
 174
 175         case FILE_ACTION_REMOVED:
 176             TRACE("FILE_ACTION_REMOVED %s\n", debugstr_w(info.data.FileName));
 177             GetWindowsDirectoryW(path, MAX_PATH);
 178             lstrcatW(path, tasksW);
 179             lstrcatW(path, info.data.FileName);
 180             remove_job(path);
 181             break;
 182
 183         case FILE_ACTION_MODIFIED:
 184             TRACE("FILE_ACTION_MODIFIED %s\n", debugstr_w(info.data.FileName));
 185
 186             GetWindowsDirectoryW(path, MAX_PATH);
 187             lstrcatW(path, tasksW);
 188             lstrcatW(path, info.data.FileName);
 189             remove_job(path);
 190             add_job(path);
 191             break;
 192
 193         default:
 194             FIXME("%s: action %#x not handled\n", debugstr_w(info.data.FileName), info.data.Action);
 195             break;
 196         }
 197
 198         check_task_state();
 199
 200         if (get_next_runtime(&period))
 201         {
 202             if (!SetWaitableTimer(htimer, &period, 0, NULL, NULL, FALSE))
 203                 ERR("SetWaitableTimer failed\n");
 204         }
 205
 206         memset(&info, 0, sizeof(info));
 207         if (!ReadDirectoryChangesW(htasks, &info, sizeof(info), FALSE,
 208                                    FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE,
 209                                    NULL, &ov, NULL)) break;
 210     }
 211
 212     CancelWaitableTimer(htimer);
 213     CloseHandle(htimer);
 214     CloseHandle(ov.hEvent);
 215     CloseHandle(hport);
 216     CloseHandle(hjob_queue);
 217     CloseHandle(htasks);
 218
 219     TRACE("Finished.\n");
 220
 221     return 0;
 222 }
 223
 224 void schedsvc_auto_start(void)
 225 {
 226     static DWORD start_type;
 227     SC_HANDLE scm, service;
 228     QUERY_SERVICE_CONFIGW *cfg;
 229     DWORD cfg_size;
 230
 231     if (start_type == SERVICE_AUTO_START) return;
 232
 233     TRACE("changing service start type to SERVICE_AUTO_START\n");
 234
 235     scm = OpenSCManagerW(NULL, NULL, 0);
 236     if (!scm)
 237     {
 238         WARN("failed to open SCM (%u)\n", GetLastError());
 239         return;
 240     }
 241
 242     service = OpenServiceW(scm, scheduleW, SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG);
 243     if (service)
 244     {
 245         if (!QueryServiceConfigW(service, NULL, 0, &cfg_size) && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
 246         {
 247             cfg = HeapAlloc(GetProcessHeap(), 0, cfg_size);
 248             if (cfg)
 249             {
 250                 if (QueryServiceConfigW(service, cfg, cfg_size, &cfg_size))
 251                 {
 252                     start_type = cfg->dwStartType;
 253                     if (start_type != SERVICE_AUTO_START)
 254                     {
 255                         if (ChangeServiceConfigW(service, SERVICE_NO_CHANGE, SERVICE_AUTO_START, SERVICE_NO_CHANGE,
 256                                                  NULL, NULL, NULL, NULL, NULL, NULL, NULL))
 257                             start_type = SERVICE_AUTO_START;
 258                     }
 259                 }
 260                 HeapFree(GetProcessHeap(), 0, cfg);
 261             }
 262         }
 263         else
 264             WARN("failed to query service config (%u)\n", GetLastError());
 265
 266         CloseServiceHandle(service);
 267     }
 268     else
 269         WARN("failed to open service (%u)\n", GetLastError());
 270
 271     CloseServiceHandle(scm);
 272 }
 273
 274 static void schedsvc_update_status(DWORD state)
 275 {
 276     SERVICE_STATUS status;
 277
 278     status.dwServiceType = SERVICE_WIN32;
 279     status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
 280     status.dwWin32ExitCode = 0;
 281     status.dwServiceSpecificExitCode = 0;
 282     status.dwCheckPoint = 0;
 283     status.dwWaitHint = 0;
 284     status.dwControlsAccepted = 0;
 285     status.dwCurrentState = state;
 286
 287     SetServiceStatus(schedsvc_handle, &status);
 288 }
 289
 290 static void WINAPI schedsvc_handler(DWORD control)
 291 {
 292     TRACE("%#x\n", control);
 293
 294     switch (control)
 295     {
 296     case SERVICE_CONTROL_STOP:
 297     case SERVICE_CONTROL_SHUTDOWN:
 298         schedsvc_update_status(SERVICE_STOP_PENDING);
 299         SetEvent(done_event);
 300         break;
 301
 302     default:
 303         schedsvc_update_status(SERVICE_RUNNING);
 304         break;
 305     }
 306 }
 307
 308 static RPC_BINDING_VECTOR *sched_bindings;
 309
 310 static RPC_STATUS RPC_init(void)
 311 {
 312     static WCHAR ncacn_npW[] = { 'n','c','a','c','n','_','n','p',0 };
 313     static WCHAR endpoint_npW[] = { '\\','p','i','p','e','\\','a','t','s','v','c',0 };
 314     static WCHAR ncalrpcW[] = { 'n','c','a','l','r','p','c',0 };
 315     static WCHAR endpoint_lrpcW[] = { 'a','t','s','v','c',0 };
 316     RPC_STATUS status;
 317
 318     status = RpcServerRegisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, NULL);
 319     if (status != RPC_S_OK)
 320     {
 321         ERR("RpcServerRegisterIf error %#x\n", status);
 322         return status;
 323     }
 324
 325     status = RpcServerRegisterIf(atsvc_v1_0_s_ifspec, NULL, NULL);
 326     if (status != RPC_S_OK)
 327     {
 328         ERR("RpcServerRegisterIf error %#x\n", status);
 329         RpcServerUnregisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, FALSE);
 330         return status;
 331     }
 332
 333     status = RpcServerUseProtseqEpW(ncacn_npW, RPC_C_PROTSEQ_MAX_REQS_DEFAULT, endpoint_npW, NULL);
 334     if (status != RPC_S_OK)
 335     {
 336         ERR("RpcServerUseProtseqEp error %#x\n", status);
 337         return status;
 338     }
 339
 340     status = RpcServerUseProtseqEpW(ncalrpcW, RPC_C_PROTSEQ_MAX_REQS_DEFAULT, endpoint_lrpcW, NULL);
 341     if (status != RPC_S_OK)
 342     {
 343         ERR("RpcServerUseProtseqEp error %#x\n", status);
 344         return status;
 345     }
 346
 347     status = RpcServerInqBindings(&sched_bindings);
 348     if (status != RPC_S_OK)
 349     {
 350         ERR("RpcServerInqBindings error %#x\n", status);
 351         return status;
 352     }
 353
 354     status = RpcEpRegisterW(ITaskSchedulerService_v1_0_s_ifspec, sched_bindings, NULL, NULL);
 355     if (status != RPC_S_OK)
 356     {
 357         ERR("RpcEpRegister error %#x\n", status);
 358         return status;
 359     }
 360
 361     status = RpcEpRegisterW(atsvc_v1_0_s_ifspec, sched_bindings, NULL, NULL);
 362     if (status != RPC_S_OK)
 363     {
 364         ERR("RpcEpRegister error %#x\n", status);
 365         return status;
 366     }
 367
 368     status = RpcServerListen(1, RPC_C_LISTEN_MAX_CALLS_DEFAULT, TRUE);
 369     if (status != RPC_S_OK)
 370     {
 371         ERR("RpcServerListen error %#x\n", status);
 372         return status;
 373     }
 374     return RPC_S_OK;
 375 }
 376
 377 static void RPC_finish(void)
 378 {
 379     RpcMgmtStopServerListening(NULL);
 380     RpcEpUnregister(ITaskSchedulerService_v1_0_s_ifspec, sched_bindings, NULL);
 381     RpcEpUnregister(atsvc_v1_0_s_ifspec, sched_bindings, NULL);
 382     RpcBindingVectorFree(&sched_bindings);
 383     RpcServerUnregisterIf(ITaskSchedulerService_v1_0_s_ifspec, NULL, FALSE);
 384     RpcServerUnregisterIf(atsvc_v1_0_s_ifspec, NULL, FALSE);
 385 }
 386
 387 void WINAPI ServiceMain(DWORD argc, LPWSTR *argv)
 388 {
 389     HANDLE thread;
 390     DWORD tid;
 391
 392     TRACE("starting Task Scheduler Service\n");
 393
 394     schedsvc_handle = RegisterServiceCtrlHandlerW(scheduleW, schedsvc_handler);
 395     if (!schedsvc_handle)
 396     {
 397         ERR("RegisterServiceCtrlHandler error %d\n", GetLastError());
 398         return;
 399     }
 400
 401     schedsvc_update_status(SERVICE_START_PENDING);
 402
 403     done_event = CreateEventW(NULL, TRUE, FALSE, NULL);
 404     thread = CreateThread(NULL, 0, tasks_monitor_thread, NULL, 0, &tid);
 405
 406     if (thread && RPC_init() == RPC_S_OK)
 407     {
 408         schedsvc_update_status(SERVICE_RUNNING);
 409         WaitForSingleObject(thread, INFINITE);
 410         CloseHandle(thread);
 411         RPC_finish();
 412     }
 413
 414     schedsvc_update_status(SERVICE_STOPPED);
 415
 416     TRACE("exiting Task Scheduler Service\n");
 417 }
 418
 419 void  __RPC_FAR * __RPC_USER MIDL_user_allocate(SIZE_T len)
 420 {
 421     return heap_alloc(len);
 422 }
 423
 424 void __RPC_USER MIDL_user_free(void __RPC_FAR * ptr)
 425 {
 426     heap_free(ptr);
 427 }