programs/services/services.c

   1 /*
   2  * Services - controls services keeps track of their state
   3  *
   4  * Copyright 2007 Google (Mikolaj Zalewski)
   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 #define WIN32_LEAN_AND_MEAN
  22
  23 #include <stdarg.h>
  24 #include <windows.h>
  25 #include <winsvc.h>
  26 #include <rpc.h>
  27 #include <userenv.h>
  28
  29 #include "wine/unicode.h"
  30 #include "wine/debug.h"
  31 #include "svcctl.h"
  32
  33 #include "services.h"
  34
  35 #define MAX_SERVICE_NAME 260
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(service);
  38
  39 HANDLE g_hStartedEvent;
  40 struct scmdatabase *active_database;
  41
  42 DWORD service_pipe_timeout = 10000;
  43 DWORD service_kill_timeout = 60000;
  44 static DWORD default_preshutdown_timeout = 180000;
  45 static void *env = NULL;
  46
  47 static const int is_win64 = (sizeof(void *) > sizeof(int));
  48
  49 static const WCHAR SZ_LOCAL_SYSTEM[] = {'L','o','c','a','l','S','y','s','t','e','m',0};
  50
  51 /* Registry constants */
  52 static const WCHAR SZ_SERVICES_KEY[] = { 'S','y','s','t','e','m','\\',
  53       'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
  54       'S','e','r','v','i','c','e','s',0 };
  55
  56 /* Service key values names */
  57 static const WCHAR SZ_DISPLAY_NAME[]      = {'D','i','s','p','l','a','y','N','a','m','e',0 };
  58 static const WCHAR SZ_TYPE[]              = {'T','y','p','e',0 };
  59 static const WCHAR SZ_START[]             = {'S','t','a','r','t',0 };
  60 static const WCHAR SZ_ERROR[]             = {'E','r','r','o','r','C','o','n','t','r','o','l',0 };
  61 static const WCHAR SZ_IMAGE_PATH[]        = {'I','m','a','g','e','P','a','t','h',0};
  62 static const WCHAR SZ_GROUP[]             = {'G','r','o','u','p',0};
  63 static const WCHAR SZ_DEPEND_ON_SERVICE[] = {'D','e','p','e','n','d','O','n','S','e','r','v','i','c','e',0};
  64 static const WCHAR SZ_DEPEND_ON_GROUP[]   = {'D','e','p','e','n','d','O','n','G','r','o','u','p',0};
  65 static const WCHAR SZ_OBJECT_NAME[]       = {'O','b','j','e','c','t','N','a','m','e',0};
  66 static const WCHAR SZ_TAG[]               = {'T','a','g',0};
  67 static const WCHAR SZ_DESCRIPTION[]       = {'D','e','s','c','r','i','p','t','i','o','n',0};
  68 static const WCHAR SZ_PRESHUTDOWN[]       = {'P','r','e','s','h','u','t','d','o','w','n','T','i','m','e','o','u','t',0};
  69
  70
  71 DWORD service_create(LPCWSTR name, struct service_entry **entry)
  72 {
  73     *entry = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(**entry));
  74     if (!*entry)
  75         return ERROR_NOT_ENOUGH_SERVER_MEMORY;
  76     (*entry)->name = strdupW(name);
  77     if (!(*entry)->name)
  78     {
  79         HeapFree(GetProcessHeap(), 0, *entry);
  80         return ERROR_NOT_ENOUGH_SERVER_MEMORY;
  81     }
  82     (*entry)->control_pipe = INVALID_HANDLE_VALUE;
  83     (*entry)->status.dwCurrentState = SERVICE_STOPPED;
  84     (*entry)->status.dwWin32ExitCode = ERROR_SERVICE_NEVER_STARTED;
  85     (*entry)->preshutdown_timeout = default_preshutdown_timeout;
  86     /* all other fields are zero */
  87     return ERROR_SUCCESS;
  88 }
  89
  90 void free_service_entry(struct service_entry *entry)
  91 {
  92     HeapFree(GetProcessHeap(), 0, entry->name);
  93     HeapFree(GetProcessHeap(), 0, entry->config.lpBinaryPathName);
  94     HeapFree(GetProcessHeap(), 0, entry->config.lpDependencies);
  95     HeapFree(GetProcessHeap(), 0, entry->config.lpLoadOrderGroup);
  96     HeapFree(GetProcessHeap(), 0, entry->config.lpServiceStartName);
  97     HeapFree(GetProcessHeap(), 0, entry->config.lpDisplayName);
  98     HeapFree(GetProcessHeap(), 0, entry->description);
  99     HeapFree(GetProcessHeap(), 0, entry->dependOnServices);
 100     HeapFree(GetProcessHeap(), 0, entry->dependOnGroups);
 101     CloseHandle(entry->process);
 102     CloseHandle(entry->control_mutex);
 103     CloseHandle(entry->control_pipe);
 104     CloseHandle(entry->overlapped_event);
 105     CloseHandle(entry->status_changed_event);
 106     HeapFree(GetProcessHeap(), 0, entry);
 107 }
 108
 109 static DWORD load_service_config(HKEY hKey, struct service_entry *entry)
 110 {
 111     DWORD err;
 112     WCHAR *wptr;
 113
 114     if ((err = load_reg_string(hKey, SZ_IMAGE_PATH,   TRUE, &entry->config.lpBinaryPathName)) != 0)
 115         return err;
 116     if ((err = load_reg_string(hKey, SZ_GROUP,        0,    &entry->config.lpLoadOrderGroup)) != 0)
 117         return err;
 118     if ((err = load_reg_string(hKey, SZ_OBJECT_NAME,  TRUE, &entry->config.lpServiceStartName)) != 0)
 119         return err;
 120     if ((err = load_reg_string(hKey, SZ_DISPLAY_NAME, 0,    &entry->config.lpDisplayName)) != 0)
 121         return err;
 122     if ((err = load_reg_string(hKey, SZ_DESCRIPTION,  0,    &entry->description)) != 0)
 123         return err;
 124     if ((err = load_reg_multisz(hKey, SZ_DEPEND_ON_SERVICE, TRUE, &entry->dependOnServices)) != 0)
 125         return err;
 126     if ((err = load_reg_multisz(hKey, SZ_DEPEND_ON_GROUP, FALSE, &entry->dependOnGroups)) != 0)
 127         return err;
 128
 129     if ((err = load_reg_dword(hKey, SZ_TYPE,  &entry->config.dwServiceType)) != 0)
 130         return err;
 131     if ((err = load_reg_dword(hKey, SZ_START, &entry->config.dwStartType)) != 0)
 132         return err;
 133     if ((err = load_reg_dword(hKey, SZ_ERROR, &entry->config.dwErrorControl)) != 0)
 134         return err;
 135     if ((err = load_reg_dword(hKey, SZ_TAG,   &entry->config.dwTagId)) != 0)
 136         return err;
 137     if ((err = load_reg_dword(hKey, SZ_PRESHUTDOWN, &entry->preshutdown_timeout)) != 0)
 138         return err;
 139
 140     WINE_TRACE("Image path           = %s\n", wine_dbgstr_w(entry->config.lpBinaryPathName) );
 141     WINE_TRACE("Group                = %s\n", wine_dbgstr_w(entry->config.lpLoadOrderGroup) );
 142     WINE_TRACE("Service account name = %s\n", wine_dbgstr_w(entry->config.lpServiceStartName) );
 143     WINE_TRACE("Display name         = %s\n", wine_dbgstr_w(entry->config.lpDisplayName) );
 144     WINE_TRACE("Service dependencies : %s\n", entry->dependOnServices[0] ? "" : "(none)");
 145     for (wptr = entry->dependOnServices; *wptr; wptr += strlenW(wptr) + 1)
 146         WINE_TRACE("    * %s\n", wine_dbgstr_w(wptr));
 147     WINE_TRACE("Group dependencies   : %s\n", entry->dependOnGroups[0] ? "" : "(none)");
 148     for (wptr = entry->dependOnGroups; *wptr; wptr += strlenW(wptr) + 1)
 149         WINE_TRACE("    * %s\n", wine_dbgstr_w(wptr));
 150
 151     return ERROR_SUCCESS;
 152 }
 153
 154 static DWORD reg_set_string_value(HKEY hKey, LPCWSTR value_name, LPCWSTR string)
 155 {
 156     if (!string)
 157     {
 158         DWORD err;
 159         err = RegDeleteValueW(hKey, value_name);
 160         if (err != ERROR_FILE_NOT_FOUND)
 161             return err;
 162
 163         return ERROR_SUCCESS;
 164     }
 165
 166     return RegSetValueExW(hKey, value_name, 0, REG_SZ, (const BYTE*)string, sizeof(WCHAR)*(strlenW(string) + 1));
 167 }
 168
 169 static DWORD reg_set_multisz_value(HKEY hKey, LPCWSTR value_name, LPCWSTR string)
 170 {
 171     const WCHAR *ptr;
 172
 173     if (!string)
 174     {
 175         DWORD err;
 176         err = RegDeleteValueW(hKey, value_name);
 177         if (err != ERROR_FILE_NOT_FOUND)
 178             return err;
 179
 180         return ERROR_SUCCESS;
 181     }
 182
 183     ptr = string;
 184     while (*ptr) ptr += strlenW(ptr) + 1;
 185     return RegSetValueExW(hKey, value_name, 0, REG_MULTI_SZ, (const BYTE*)string, sizeof(WCHAR)*(ptr - string + 1));
 186 }
 187
 188 DWORD save_service_config(struct service_entry *entry)
 189 {
 190     DWORD err;
 191     HKEY hKey = NULL;
 192
 193     err = RegCreateKeyW(entry->db->root_key, entry->name, &hKey);
 194     if (err != ERROR_SUCCESS)
 195         goto cleanup;
 196
 197     if ((err = reg_set_string_value(hKey, SZ_DISPLAY_NAME, entry->config.lpDisplayName)) != 0)
 198         goto cleanup;
 199     if ((err = reg_set_string_value(hKey, SZ_IMAGE_PATH, entry->config.lpBinaryPathName)) != 0)
 200         goto cleanup;
 201     if ((err = reg_set_string_value(hKey, SZ_GROUP, entry->config.lpLoadOrderGroup)) != 0)
 202         goto cleanup;
 203     if ((err = reg_set_string_value(hKey, SZ_OBJECT_NAME, entry->config.lpServiceStartName)) != 0)
 204         goto cleanup;
 205     if ((err = reg_set_string_value(hKey, SZ_DESCRIPTION, entry->description)) != 0)
 206         goto cleanup;
 207     if ((err = reg_set_multisz_value(hKey, SZ_DEPEND_ON_SERVICE, entry->dependOnServices)) != 0)
 208         goto cleanup;
 209     if ((err = reg_set_multisz_value(hKey, SZ_DEPEND_ON_GROUP, entry->dependOnGroups)) != 0)
 210         goto cleanup;
 211     if ((err = RegSetValueExW(hKey, SZ_START, 0, REG_DWORD, (LPBYTE)&entry->config.dwStartType, sizeof(DWORD))) != 0)
 212         goto cleanup;
 213     if ((err = RegSetValueExW(hKey, SZ_ERROR, 0, REG_DWORD, (LPBYTE)&entry->config.dwErrorControl, sizeof(DWORD))) != 0)
 214         goto cleanup;
 215     if ((err = RegSetValueExW(hKey, SZ_TYPE, 0, REG_DWORD, (LPBYTE)&entry->config.dwServiceType, sizeof(DWORD))) != 0)
 216         goto cleanup;
 217     if ((err = RegSetValueExW(hKey, SZ_PRESHUTDOWN, 0, REG_DWORD, (LPBYTE)&entry->preshutdown_timeout, sizeof(DWORD))) != 0)
 218         goto cleanup;
 219
 220     if (entry->config.dwTagId)
 221         err = RegSetValueExW(hKey, SZ_TAG, 0, REG_DWORD, (LPBYTE)&entry->config.dwTagId, sizeof(DWORD));
 222     else
 223         err = RegDeleteValueW(hKey, SZ_TAG);
 224
 225     if (err != 0 && err != ERROR_FILE_NOT_FOUND)
 226         goto cleanup;
 227
 228     err = ERROR_SUCCESS;
 229 cleanup:
 230     RegCloseKey(hKey);
 231     return err;
 232 }
 233
 234 DWORD scmdatabase_add_service(struct scmdatabase *db, struct service_entry *service)
 235 {
 236     int err;
 237     service->db = db;
 238     if ((err = save_service_config(service)) != ERROR_SUCCESS)
 239     {
 240         WINE_ERR("Couldn't store service configuration: error %u\n", err);
 241         return ERROR_GEN_FAILURE;
 242     }
 243
 244     list_add_tail(&db->services, &service->entry);
 245     return ERROR_SUCCESS;
 246 }
 247
 248 DWORD scmdatabase_remove_service(struct scmdatabase *db, struct service_entry *service)
 249 {
 250     int err;
 251
 252     err = RegDeleteTreeW(db->root_key, service->name);
 253
 254     if (err != 0)
 255         return err;
 256
 257     list_remove(&service->entry);
 258     service->entry.next = service->entry.prev = NULL;
 259     return ERROR_SUCCESS;
 260 }
 261
 262 static void scmdatabase_autostart_services(struct scmdatabase *db)
 263 {
 264     struct service_entry **services_list;
 265     unsigned int i = 0;
 266     unsigned int size = 32;
 267     struct service_entry *service;
 268
 269     services_list = HeapAlloc(GetProcessHeap(), 0, size * sizeof(services_list[0]));
 270     if (!services_list)
 271         return;
 272
 273     scmdatabase_lock_shared(db);
 274
 275     LIST_FOR_EACH_ENTRY(service, &db->services, struct service_entry, entry)
 276     {
 277         if (service->config.dwStartType == SERVICE_BOOT_START ||
 278             service->config.dwStartType == SERVICE_SYSTEM_START ||
 279             service->config.dwStartType == SERVICE_AUTO_START)
 280         {
 281             if (i+1 >= size)
 282             {
 283                 struct service_entry **slist_new;
 284                 size *= 2;
 285                 slist_new = HeapReAlloc(GetProcessHeap(), 0, services_list, size * sizeof(services_list[0]));
 286                 if (!slist_new)
 287                     break;
 288                 services_list = slist_new;
 289             }
 290             services_list[i] = service;
 291             service->ref_count++;
 292             i++;
 293         }
 294     }
 295
 296     scmdatabase_unlock(db);
 297
 298     size = i;
 299     for (i = 0; i < size; i++)
 300     {
 301         DWORD err;
 302         service = services_list[i];
 303         err = service_start(service, 0, NULL);
 304         if (err != ERROR_SUCCESS)
 305             WINE_FIXME("Auto-start service %s failed to start: %d\n",
 306                        wine_dbgstr_w(service->name), err);
 307         release_service(service);
 308     }
 309
 310     HeapFree(GetProcessHeap(), 0, services_list);
 311 }
 312
 313 static void scmdatabase_wait_terminate(struct scmdatabase *db)
 314 {
 315     struct service_entry *service;
 316     BOOL run = TRUE;
 317
 318     scmdatabase_lock_shared(db);
 319     while(run)
 320     {
 321         run = FALSE;
 322         LIST_FOR_EACH_ENTRY(service, &db->services, struct service_entry, entry)
 323         {
 324             if(service->process)
 325             {
 326                 scmdatabase_unlock(db);
 327                 WaitForSingleObject(service->process, INFINITE);
 328                 scmdatabase_lock_shared(db);
 329                 CloseHandle(service->process);
 330                 service->process = NULL;
 331                 run = TRUE;
 332                 break;
 333             }
 334         }
 335     }
 336     scmdatabase_unlock(db);
 337 }
 338
 339 BOOL validate_service_name(LPCWSTR name)
 340 {
 341     return (name && name[0] && !strchrW(name, '/') && !strchrW(name, '\\'));
 342 }
 343
 344 BOOL validate_service_config(struct service_entry *entry)
 345 {
 346     if (entry->config.dwServiceType & SERVICE_WIN32 && (entry->config.lpBinaryPathName == NULL || !entry->config.lpBinaryPathName[0]))
 347     {
 348         WINE_ERR("Service %s is Win32 but has no image path set\n", wine_dbgstr_w(entry->name));
 349         return FALSE;
 350     }
 351
 352     switch (entry->config.dwServiceType)
 353     {
 354     case SERVICE_KERNEL_DRIVER:
 355     case SERVICE_FILE_SYSTEM_DRIVER:
 356     case SERVICE_WIN32_OWN_PROCESS:
 357     case SERVICE_WIN32_SHARE_PROCESS:
 358         /* No problem */
 359         break;
 360     case SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS:
 361     case SERVICE_WIN32_SHARE_PROCESS | SERVICE_INTERACTIVE_PROCESS:
 362         /* These can be only run as LocalSystem */
 363         if (entry->config.lpServiceStartName && strcmpiW(entry->config.lpServiceStartName, SZ_LOCAL_SYSTEM) != 0)
 364         {
 365             WINE_ERR("Service %s is interactive but has a start name\n", wine_dbgstr_w(entry->name));
 366             return FALSE;
 367         }
 368         break;
 369     default:
 370         WINE_ERR("Service %s has an unknown service type (0x%x)\n", wine_dbgstr_w(entry->name), entry->config.dwServiceType);
 371         return FALSE;
 372     }
 373
 374     /* StartType can only be a single value (if several values are mixed the result is probably not what was intended) */
 375     if (entry->config.dwStartType > SERVICE_DISABLED)
 376     {
 377         WINE_ERR("Service %s has an unknown start type\n", wine_dbgstr_w(entry->name));
 378         return FALSE;
 379     }
 380
 381     /* SERVICE_BOOT_START and SERVICE_SYSTEM_START are only allowed for driver services */
 382     if (((entry->config.dwStartType == SERVICE_BOOT_START) || (entry->config.dwStartType == SERVICE_SYSTEM_START)) &&
 383         ((entry->config.dwServiceType & SERVICE_WIN32_OWN_PROCESS) || (entry->config.dwServiceType & SERVICE_WIN32_SHARE_PROCESS)))
 384     {
 385         WINE_ERR("Service %s - SERVICE_BOOT_START and SERVICE_SYSTEM_START are only allowed for driver services\n", wine_dbgstr_w(entry->name));
 386         return FALSE;
 387     }
 388
 389     if (entry->config.lpServiceStartName == NULL)
 390         entry->config.lpServiceStartName = strdupW(SZ_LOCAL_SYSTEM);
 391
 392     return TRUE;
 393 }
 394
 395
 396 struct service_entry *scmdatabase_find_service(struct scmdatabase *db, LPCWSTR name)
 397 {
 398     struct service_entry *service;
 399
 400     LIST_FOR_EACH_ENTRY(service, &db->services, struct service_entry, entry)
 401     {
 402         if (strcmpiW(name, service->name) == 0)
 403             return service;
 404     }
 405
 406     return NULL;
 407 }
 408
 409 struct service_entry *scmdatabase_find_service_by_displayname(struct scmdatabase *db, LPCWSTR name)
 410 {
 411     struct service_entry *service;
 412
 413     LIST_FOR_EACH_ENTRY(service, &db->services, struct service_entry, entry)
 414     {
 415         if (service->config.lpDisplayName && strcmpiW(name, service->config.lpDisplayName) == 0)
 416             return service;
 417     }
 418
 419     return NULL;
 420 }
 421
 422 void release_service(struct service_entry *service)
 423 {
 424     if (InterlockedDecrement(&service->ref_count) == 0 && is_marked_for_delete(service))
 425         free_service_entry(service);
 426 }
 427
 428 static DWORD scmdatabase_create(struct scmdatabase **db)
 429 {
 430     DWORD err;
 431
 432     *db = HeapAlloc(GetProcessHeap(), 0, sizeof(**db));
 433     if (!*db)
 434         return ERROR_NOT_ENOUGH_SERVER_MEMORY;
 435
 436     (*db)->service_start_lock = FALSE;
 437     list_init(&(*db)->services);
 438
 439     InitializeCriticalSection(&(*db)->cs);
 440     (*db)->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": scmdatabase");
 441
 442     err = RegCreateKeyExW(HKEY_LOCAL_MACHINE, SZ_SERVICES_KEY, 0, NULL,
 443                           REG_OPTION_NON_VOLATILE, MAXIMUM_ALLOWED, NULL,
 444                           &(*db)->root_key, NULL);
 445     if (err != ERROR_SUCCESS)
 446         HeapFree(GetProcessHeap(), 0, *db);
 447
 448     return err;
 449 }
 450
 451 static void scmdatabase_destroy(struct scmdatabase *db)
 452 {
 453     RegCloseKey(db->root_key);
 454     db->cs.DebugInfo->Spare[0] = 0;
 455     DeleteCriticalSection(&db->cs);
 456     HeapFree(GetProcessHeap(), 0, db);
 457 }
 458
 459 static DWORD scmdatabase_load_services(struct scmdatabase *db)
 460 {
 461     DWORD err;
 462     int i;
 463
 464     for (i = 0; TRUE; i++)
 465     {
 466         WCHAR szName[MAX_SERVICE_NAME];
 467         struct service_entry *entry;
 468         HKEY hServiceKey;
 469
 470         err = RegEnumKeyW(db->root_key, i, szName, MAX_SERVICE_NAME);
 471         if (err == ERROR_NO_MORE_ITEMS)
 472             break;
 473
 474         if (err != 0)
 475         {
 476             WINE_ERR("Error %d reading key %d name - skipping\n", err, i);
 477             continue;
 478         }
 479
 480         err = service_create(szName, &entry);
 481         if (err != ERROR_SUCCESS)
 482             break;
 483
 484         WINE_TRACE("Loading service %s\n", wine_dbgstr_w(szName));
 485         err = RegOpenKeyExW(db->root_key, szName, 0, KEY_READ, &hServiceKey);
 486         if (err == ERROR_SUCCESS)
 487         {
 488             err = load_service_config(hServiceKey, entry);
 489             RegCloseKey(hServiceKey);
 490         }
 491
 492         if (err != ERROR_SUCCESS)
 493         {
 494             WINE_ERR("Error %d reading registry key for service %s - skipping\n", err, wine_dbgstr_w(szName));
 495             free_service_entry(entry);
 496             continue;
 497         }
 498
 499         if (entry->config.dwServiceType == 0)
 500         {
 501             /* Maybe an application only wrote some configuration in the service key. Continue silently */
 502             WINE_TRACE("Even the service type not set for service %s - skipping\n", wine_dbgstr_w(szName));
 503             free_service_entry(entry);
 504             continue;
 505         }
 506
 507         if (!validate_service_config(entry))
 508         {
 509             WINE_ERR("Invalid configuration of service %s - skipping\n", wine_dbgstr_w(szName));
 510             free_service_entry(entry);
 511             continue;
 512         }
 513
 514         entry->status.dwServiceType = entry->config.dwServiceType;
 515         entry->db = db;
 516
 517         list_add_tail(&db->services, &entry->entry);
 518     }
 519     return ERROR_SUCCESS;
 520 }
 521
 522 DWORD scmdatabase_lock_startup(struct scmdatabase *db)
 523 {
 524     if (InterlockedCompareExchange(&db->service_start_lock, TRUE, FALSE))
 525         return ERROR_SERVICE_DATABASE_LOCKED;
 526     return ERROR_SUCCESS;
 527 }
 528
 529 void scmdatabase_unlock_startup(struct scmdatabase *db)
 530 {
 531     InterlockedCompareExchange(&db->service_start_lock, FALSE, TRUE);
 532 }
 533
 534 void scmdatabase_lock_shared(struct scmdatabase *db)
 535 {
 536     EnterCriticalSection(&db->cs);
 537 }
 538
 539 void scmdatabase_lock_exclusive(struct scmdatabase *db)
 540 {
 541     EnterCriticalSection(&db->cs);
 542 }
 543
 544 void scmdatabase_unlock(struct scmdatabase *db)
 545 {
 546     LeaveCriticalSection(&db->cs);
 547 }
 548
 549 void service_lock_shared(struct service_entry *service)
 550 {
 551     EnterCriticalSection(&service->db->cs);
 552 }
 553
 554 void service_lock_exclusive(struct service_entry *service)
 555 {
 556     EnterCriticalSection(&service->db->cs);
 557 }
 558
 559 void service_unlock(struct service_entry *service)
 560 {
 561     LeaveCriticalSection(&service->db->cs);
 562 }
 563
 564 /* only one service started at a time, so there is no race on the registry
 565  * value here */
 566 static LPWSTR service_get_pipe_name(void)
 567 {
 568     static const WCHAR format[] = { '\\','\\','.','\\','p','i','p','e','\\',
 569         'n','e','t','\\','N','t','C','o','n','t','r','o','l','P','i','p','e','%','u',0};
 570     static const WCHAR service_current_key_str[] = { 'S','Y','S','T','E','M','\\',
 571         'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
 572         'C','o','n','t','r','o','l','\\',
 573         'S','e','r','v','i','c','e','C','u','r','r','e','n','t',0};
 574     LPWSTR name;
 575     DWORD len;
 576     HKEY service_current_key;
 577     DWORD service_current = -1;
 578     LONG ret;
 579     DWORD type;
 580
 581     ret = RegCreateKeyExW(HKEY_LOCAL_MACHINE, service_current_key_str, 0,
 582         NULL, REG_OPTION_VOLATILE, KEY_SET_VALUE | KEY_QUERY_VALUE, NULL,
 583         &service_current_key, NULL);
 584     if (ret != ERROR_SUCCESS)
 585         return NULL;
 586     len = sizeof(service_current);
 587     ret = RegQueryValueExW(service_current_key, NULL, NULL, &type,
 588         (BYTE *)&service_current, &len);
 589     if ((ret == ERROR_SUCCESS && type == REG_DWORD) || ret == ERROR_FILE_NOT_FOUND)
 590     {
 591         service_current++;
 592         RegSetValueExW(service_current_key, NULL, 0, REG_DWORD,
 593             (BYTE *)&service_current, sizeof(service_current));
 594     }
 595     RegCloseKey(service_current_key);
 596     if ((ret != ERROR_SUCCESS || type != REG_DWORD) && (ret != ERROR_FILE_NOT_FOUND))
 597         return NULL;
 598     len = sizeof(format)/sizeof(WCHAR) + 10 /* strlenW("4294967295") */;
 599     name = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 600     if (!name)
 601         return NULL;
 602     snprintfW(name, len, format, service_current);
 603     return name;
 604 }
 605
 606 static DWORD service_start_process(struct service_entry *service_entry, HANDLE *process)
 607 {
 608     PROCESS_INFORMATION pi;
 609     STARTUPINFOW si;
 610     LPWSTR path = NULL;
 611     DWORD size;
 612     BOOL r;
 613
 614     service_lock_exclusive(service_entry);
 615
 616     if (!env)
 617     {
 618         HANDLE htok;
 619
 620         if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY|TOKEN_DUPLICATE, &htok))
 621             CreateEnvironmentBlock(&env, htok, FALSE);
 622
 623         if (!env)
 624             WINE_ERR("failed to create services environment\n");
 625     }
 626
 627     size = ExpandEnvironmentStringsW(service_entry->config.lpBinaryPathName,NULL,0);
 628     path = HeapAlloc(GetProcessHeap(),0,size*sizeof(WCHAR));
 629     if (!path)
 630     {
 631         service_unlock(service_entry);
 632         return ERROR_NOT_ENOUGH_SERVER_MEMORY;
 633     }
 634     ExpandEnvironmentStringsW(service_entry->config.lpBinaryPathName,path,size);
 635
 636     if (service_entry->config.dwServiceType == SERVICE_KERNEL_DRIVER)
 637     {
 638         static const WCHAR winedeviceW[] = {'\\','w','i','n','e','d','e','v','i','c','e','.','e','x','e',' ',0};
 639         WCHAR system_dir[MAX_PATH];
 640         DWORD type, len;
 641
 642         GetSystemDirectoryW( system_dir, MAX_PATH );
 643         if (is_win64)
 644         {
 645             if (!GetBinaryTypeW( path, &type ))
 646             {
 647                 HeapFree( GetProcessHeap(), 0, path );
 648                 service_unlock(service_entry);
 649                 return GetLastError();
 650             }
 651             if (type == SCS_32BIT_BINARY) GetSystemWow64DirectoryW( system_dir, MAX_PATH );
 652         }
 653
 654         len = strlenW( system_dir ) + sizeof(winedeviceW)/sizeof(WCHAR) + strlenW(service_entry->name);
 655         HeapFree( GetProcessHeap(), 0, path );
 656         if (!(path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) )))
 657         {
 658             service_unlock(service_entry);
 659             return ERROR_NOT_ENOUGH_SERVER_MEMORY;
 660         }
 661         lstrcpyW( path, system_dir );
 662         lstrcatW( path, winedeviceW );
 663         lstrcatW( path, service_entry->name );
 664     }
 665
 666     ZeroMemory(&si, sizeof(STARTUPINFOW));
 667     si.cb = sizeof(STARTUPINFOW);
 668     if (!(service_entry->config.dwServiceType & SERVICE_INTERACTIVE_PROCESS))
 669     {
 670         static WCHAR desktopW[] = {'_','_','w','i','n','e','s','e','r','v','i','c','e','_','w','i','n','s','t','a','t','i','o','n','\\','D','e','f','a','u','l','t',0};
 671         si.lpDesktop = desktopW;
 672     }
 673
 674     service_entry->status.dwCurrentState = SERVICE_START_PENDING;
 675
 676     service_unlock(service_entry);
 677
 678     r = CreateProcessW(NULL, path, NULL, NULL, FALSE, CREATE_UNICODE_ENVIRONMENT, env, NULL, &si, &pi);
 679     HeapFree(GetProcessHeap(),0,path);
 680     if (!r)
 681     {
 682         service_lock_exclusive(service_entry);
 683         service_entry->status.dwCurrentState = SERVICE_STOPPED;
 684         service_unlock(service_entry);
 685         return GetLastError();
 686     }
 687
 688     service_entry->status.dwProcessId = pi.dwProcessId;
 689     service_entry->process = pi.hProcess;
 690     *process = pi.hProcess;
 691     CloseHandle( pi.hThread );
 692
 693     return ERROR_SUCCESS;
 694 }
 695
 696 static DWORD service_wait_for_startup(struct service_entry *service_entry, HANDLE process_handle)
 697 {
 698     WINE_TRACE("%p\n", service_entry);
 699
 700     for (;;)
 701     {
 702         DWORD dwCurrentStatus;
 703         HANDLE handles[2] = { service_entry->status_changed_event, process_handle };
 704         DWORD ret;
 705         ret = WaitForMultipleObjects( 2, handles, FALSE, service_pipe_timeout );
 706         if (ret != WAIT_OBJECT_0)
 707             return ERROR_SERVICE_REQUEST_TIMEOUT;
 708         service_lock_shared(service_entry);
 709         dwCurrentStatus = service_entry->status.dwCurrentState;
 710         service_unlock(service_entry);
 711         if (dwCurrentStatus == SERVICE_START_PENDING)
 712         {
 713             WINE_TRACE("Service changed its status to SERVICE_START_PENDING\n");
 714             return ERROR_SUCCESS;
 715         }
 716         else if (dwCurrentStatus == SERVICE_RUNNING)
 717         {
 718             WINE_TRACE("Service started successfully\n");
 719             return ERROR_SUCCESS;
 720         }
 721         if (dwCurrentStatus != SERVICE_START_PENDING)
 722             return ERROR_SERVICE_REQUEST_TIMEOUT;
 723     }
 724 }
 725
 726 /******************************************************************************
 727  * service_send_start_message
 728  */
 729 static BOOL service_send_start_message(struct service_entry *service, HANDLE process_handle,
 730                                        LPCWSTR *argv, DWORD argc)
 731 {
 732     OVERLAPPED overlapped;
 733     DWORD i, len, result;
 734     service_start_info *ssi;
 735     LPWSTR p;
 736     BOOL r;
 737
 738     WINE_TRACE("%s %p %d\n", wine_dbgstr_w(service->name), argv, argc);
 739
 740     overlapped.hEvent = service->overlapped_event;
 741     if (!ConnectNamedPipe(service->control_pipe, &overlapped))
 742     {
 743         if (GetLastError() == ERROR_IO_PENDING)
 744         {
 745             HANDLE handles[2];
 746             handles[0] = service->overlapped_event;
 747             handles[1] = process_handle;
 748             if (WaitForMultipleObjects( 2, handles, FALSE, service_pipe_timeout ) != WAIT_OBJECT_0)
 749                 CancelIo( service->control_pipe );
 750             if (!HasOverlappedCompleted( &overlapped ))
 751             {
 752                 WINE_ERR( "service %s failed to start\n", wine_dbgstr_w( service->name ));
 753                 return FALSE;
 754             }
 755         }
 756         else if (GetLastError() != ERROR_PIPE_CONNECTED)
 757         {
 758             WINE_ERR("pipe connect failed\n");
 759             return FALSE;
 760         }
 761     }
 762
 763     /* calculate how much space do we need to send the startup info */
 764     len = strlenW(service->name) + 1;
 765     for (i=0; i<argc; i++)
 766         len += strlenW(argv[i])+1;
 767     len++;
 768
 769     ssi = HeapAlloc(GetProcessHeap(),0,FIELD_OFFSET(service_start_info, data[len]));
 770     ssi->cmd = WINESERV_STARTINFO;
 771     ssi->control = 0;
 772     ssi->total_size = FIELD_OFFSET(service_start_info, data[len]);
 773     ssi->name_size = strlenW(service->name) + 1;
 774     strcpyW( ssi->data, service->name );
 775
 776     /* copy service args into a single buffer*/
 777     p = &ssi->data[ssi->name_size];
 778     for (i=0; i<argc; i++)
 779     {
 780         strcpyW(p, argv[i]);
 781         p += strlenW(p) + 1;
 782     }
 783     *p=0;
 784
 785     r = service_send_command( service, service->control_pipe, ssi, ssi->total_size, &result );
 786     if (r && result)
 787     {
 788         SetLastError(result);
 789         r = FALSE;
 790     }
 791
 792     HeapFree(GetProcessHeap(),0,ssi);
 793
 794     return r;
 795 }
 796
 797 DWORD service_start(struct service_entry *service, DWORD service_argc, LPCWSTR *service_argv)
 798 {
 799     DWORD err;
 800     LPWSTR name;
 801     HANDLE process_handle = NULL;
 802
 803     err = scmdatabase_lock_startup(service->db);
 804     if (err != ERROR_SUCCESS)
 805         return err;
 806
 807     if (WaitForSingleObject(service->process, 0) == WAIT_TIMEOUT)
 808     {
 809         scmdatabase_unlock_startup(service->db);
 810         return ERROR_SERVICE_ALREADY_RUNNING;
 811     }
 812
 813     CloseHandle(service->control_pipe);
 814     service->control_mutex = CreateMutexW(NULL, TRUE, NULL);
 815
 816     if (!service->status_changed_event)
 817         service->status_changed_event = CreateEventW(NULL, FALSE, FALSE, NULL);
 818     if (!service->overlapped_event)
 819         service->overlapped_event = CreateEventW(NULL, TRUE, FALSE, NULL);
 820
 821     name = service_get_pipe_name();
 822     service->control_pipe = CreateNamedPipeW(name, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
 823                   PIPE_TYPE_BYTE|PIPE_WAIT, 1, 256, 256, 10000, NULL );
 824     HeapFree(GetProcessHeap(), 0, name);
 825     if (service->control_pipe==INVALID_HANDLE_VALUE)
 826     {
 827         WINE_ERR("failed to create pipe for %s, error = %d\n",
 828             wine_dbgstr_w(service->name), GetLastError());
 829         err = GetLastError();
 830     }
 831     else
 832     {
 833         err = service_start_process(service, &process_handle);
 834         if (err == ERROR_SUCCESS)
 835         {
 836             if (!service_send_start_message(service, process_handle, service_argv, service_argc))
 837                 err = ERROR_SERVICE_REQUEST_TIMEOUT;
 838         }
 839
 840         if (err == ERROR_SUCCESS)
 841             err = service_wait_for_startup(service, process_handle);
 842     }
 843
 844     if (err == ERROR_SUCCESS)
 845         ReleaseMutex(service->control_mutex);
 846     else
 847         service_terminate(service);
 848     scmdatabase_unlock_startup(service->db);
 849
 850     WINE_TRACE("returning %d\n", err);
 851
 852     return err;
 853 }
 854
 855 void service_terminate(struct service_entry *service)
 856 {
 857     service_lock_exclusive(service);
 858     TerminateProcess(service->process, 0);
 859     CloseHandle(service->process);
 860     service->process = NULL;
 861     CloseHandle(service->status_changed_event);
 862     service->status_changed_event = NULL;
 863     CloseHandle(service->control_mutex);
 864     service->control_mutex = NULL;
 865     CloseHandle(service->control_pipe);
 866     service->control_pipe = INVALID_HANDLE_VALUE;
 867
 868     service->status.dwProcessId = 0;
 869     service->status.dwCurrentState = SERVICE_STOPPED;
 870     service_unlock(service);
 871 }
 872
 873 static void load_registry_parameters(void)
 874 {
 875     static const WCHAR controlW[] =
 876         { 'S','y','s','t','e','m','\\',
 877           'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
 878           'C','o','n','t','r','o','l',0 };
 879     static const WCHAR pipetimeoutW[] =
 880         {'S','e','r','v','i','c','e','s','P','i','p','e','T','i','m','e','o','u','t',0};
 881     static const WCHAR killtimeoutW[] =
 882         {'W','a','i','t','T','o','K','i','l','l','S','e','r','v','i','c','e','T','i','m','e','o','u','t',0};
 883     HKEY key;
 884     WCHAR buffer[64];
 885     DWORD type, count, val;
 886
 887     if (RegOpenKeyW( HKEY_LOCAL_MACHINE, controlW, &key )) return;
 888
 889     count = sizeof(buffer);
 890     if (!RegQueryValueExW( key, pipetimeoutW, NULL, &type, (BYTE *)buffer, &count ) &&
 891         type == REG_SZ && (val = atoiW( buffer )))
 892         service_pipe_timeout = val;
 893
 894     count = sizeof(buffer);
 895     if (!RegQueryValueExW( key, killtimeoutW, NULL, &type, (BYTE *)buffer, &count ) &&
 896         type == REG_SZ && (val = atoiW( buffer )))
 897         service_kill_timeout = val;
 898
 899     RegCloseKey( key );
 900 }
 901
 902 int main(int argc, char *argv[])
 903 {
 904     static const WCHAR svcctl_started_event[] = SVCCTL_STARTED_EVENT;
 905     DWORD err;
 906
 907     g_hStartedEvent = CreateEventW(NULL, TRUE, FALSE, svcctl_started_event);
 908     load_registry_parameters();
 909     err = scmdatabase_create(&active_database);
 910     if (err != ERROR_SUCCESS)
 911         return err;
 912     if ((err = scmdatabase_load_services(active_database)) != ERROR_SUCCESS)
 913         return err;
 914     if ((err = RPC_Init()) == ERROR_SUCCESS)
 915     {
 916         scmdatabase_autostart_services(active_database);
 917         events_loop();
 918         scmdatabase_wait_terminate(active_database);
 919     }
 920     scmdatabase_destroy(active_database);
 921     if (env)
 922         DestroyEnvironmentBlock(env);
 923
 924     WINE_TRACE("services.exe exited with code %d\n", err);
 925     return err;
 926 }