source3/rpc_server/srv_svcctl_nt.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *
   5  *  Copyright (C) Marcin Krzysztof Porwit           2005.
   6  *
   7  *  Largely Rewritten (Again) by:
   8  *  Copyright (C) Gerald (Jerry) Carter             2005.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "includes.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_RPC_SRV
  29
  30 struct service_control_op {
  31         const char *name;
  32         SERVICE_CONTROL_OPS *ops;
  33 };
  34
  35 extern SERVICE_CONTROL_OPS spoolss_svc_ops;
  36 extern SERVICE_CONTROL_OPS rcinit_svc_ops;
  37 extern SERVICE_CONTROL_OPS netlogon_svc_ops;
  38 extern SERVICE_CONTROL_OPS winreg_svc_ops;
  39
  40 struct service_control_op *svcctl_ops;
  41
  42 static struct generic_mapping scm_generic_map =
  43         { SC_MANAGER_READ_ACCESS, SC_MANAGER_WRITE_ACCESS, SC_MANAGER_EXECUTE_ACCESS, SC_MANAGER_ALL_ACCESS };
  44 static struct generic_mapping svc_generic_map =
  45         { SERVICE_READ_ACCESS, SERVICE_WRITE_ACCESS, SERVICE_EXECUTE_ACCESS, SERVICE_ALL_ACCESS };
  46
  47
  48 /********************************************************************
  49 ********************************************************************/
  50
  51 BOOL init_service_op_table( void )
  52 {
  53         const char **service_list = lp_svcctl_list();
  54         int num_services = 3 + str_list_count( service_list );
  55         int i;
  56
  57         if ( !(svcctl_ops = TALLOC_ARRAY( NULL, struct service_control_op, num_services+1)) ) {
  58                 DEBUG(0,("init_service_op_table: talloc() failed!\n"));
  59                 return False;
  60         }
  61
  62         /* services listed in smb.conf get the rc.init interface */
  63
  64         for ( i=0; service_list[i]; i++ ) {
  65                 svcctl_ops[i].name = talloc_strdup( svcctl_ops, service_list[i] );
  66                 svcctl_ops[i].ops  = &rcinit_svc_ops;
  67         }
  68
  69         /* add builtin services */
  70
  71         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "Spooler" );
  72         svcctl_ops[i].ops  = &spoolss_svc_ops;
  73         i++;
  74
  75         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "NETLOGON" );
  76         svcctl_ops[i].ops  = &netlogon_svc_ops;
  77         i++;
  78
  79         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "RemoteRegistry" );
  80         svcctl_ops[i].ops  = &winreg_svc_ops;
  81         i++;
  82
  83         /* NULL terminate the array */
  84
  85         svcctl_ops[i].name = NULL;
  86         svcctl_ops[i].ops  = NULL;
  87
  88         return True;
  89 }
  90
  91 /********************************************************************
  92 ********************************************************************/
  93
  94 static struct service_control_op* find_service_by_name( const char *name )
  95 {
  96         int i;
  97
  98         for ( i=0; svcctl_ops[i].name; i++ ) {
  99                 if ( strequal( name, svcctl_ops[i].name ) )
 100                         return &svcctl_ops[i];
 101         }
 102
 103         return NULL;
 104 }
 105 /********************************************************************
 106 ********************************************************************/
 107
 108 static NTSTATUS svcctl_access_check( SEC_DESC *sec_desc, NT_USER_TOKEN *token,
 109                                      uint32 access_desired, uint32 *access_granted )
 110 {
 111         NTSTATUS result;
 112
 113         if ( geteuid() == sec_initial_uid() ) {
 114                 DEBUG(5,("svcctl_access_check: using root's token\n"));
 115                 token = get_root_nt_token();
 116         }
 117
 118         se_access_check( sec_desc, token, access_desired, access_granted, &result );
 119
 120         return result;
 121 }
 122
 123 /********************************************************************
 124 ********************************************************************/
 125
 126 static SEC_DESC* construct_scm_sd( TALLOC_CTX *ctx )
 127 {
 128         SEC_ACE ace[2];
 129         SEC_ACCESS mask;
 130         size_t i = 0;
 131         SEC_DESC *sd;
 132         SEC_ACL *acl;
 133         size_t sd_size;
 134
 135         /* basic access for Everyone */
 136
 137         init_sec_access(&mask, SC_MANAGER_READ_ACCESS );
 138         init_sec_ace(&ace[i++], &global_sid_World, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);
 139
 140         /* Full Access 'BUILTIN\Administrators' */
 141
 142         init_sec_access(&mask,SC_MANAGER_ALL_ACCESS );
 143         init_sec_ace(&ace[i++], &global_sid_Builtin_Administrators, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);
 144
 145
 146         /* create the security descriptor */
 147
 148         if ( !(acl = make_sec_acl(ctx, NT4_ACL_REVISION, i, ace)) )
 149                 return NULL;
 150
 151         if ( !(sd = make_sec_desc(ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL, acl, &sd_size)) )
 152                 return NULL;
 153
 154         return sd;
 155 }
 156
 157 /******************************************************************
 158  free() function for REGISTRY_KEY
 159  *****************************************************************/
 160
 161 static void free_service_handle_info(void *ptr)
 162 {
 163         TALLOC_FREE( ptr );
 164 }
 165
 166 /******************************************************************
 167  Find a registry key handle and return a SERVICE_INFO
 168  *****************************************************************/
 169
 170 static SERVICE_INFO *find_service_info_by_hnd(pipes_struct *p, POLICY_HND *hnd)
 171 {
 172         SERVICE_INFO *service_info = NULL;
 173
 174         if( !find_policy_by_hnd( p, hnd, (void **)&service_info) ) {
 175                 DEBUG(2,("find_service_info_by_hnd: handle not found"));
 176                 return NULL;
 177         }
 178
 179         return service_info;
 180 }
 181
 182 /******************************************************************
 183  *****************************************************************/
 184
 185 static WERROR create_open_service_handle( pipes_struct *p, POLICY_HND *handle, uint32 type,
 186                                           const char *service, uint32 access_granted )
 187 {
 188         SERVICE_INFO *info = NULL;
 189         WERROR result = WERR_OK;
 190         struct service_control_op *s_op;
 191
 192         if ( !(info = TALLOC_ZERO_P( NULL, SERVICE_INFO )) )
 193                 return WERR_NOMEM;
 194
 195         /* the Service Manager has a NULL name */
 196
 197         info->type = SVC_HANDLE_IS_SCM;
 198
 199         switch ( type ) {
 200         case SVC_HANDLE_IS_SCM:
 201                 info->type = SVC_HANDLE_IS_SCM;
 202                 break;
 203
 204         case SVC_HANDLE_IS_DBLOCK:
 205                 info->type = SVC_HANDLE_IS_DBLOCK;
 206                 break;
 207
 208         case SVC_HANDLE_IS_SERVICE:
 209                 info->type = SVC_HANDLE_IS_SERVICE;
 210
 211                 /* lookup the SERVICE_CONTROL_OPS */
 212
 213                 if ( !(s_op = find_service_by_name( service )) ) {
 214                         result = WERR_NO_SUCH_SERVICE;
 215                         goto done;
 216                 }
 217
 218                 info->ops = s_op->ops;
 219
 220                 if ( !(info->name  = talloc_strdup( info, s_op->name )) ) {
 221                         result = WERR_NOMEM;
 222                         goto done;
 223                 }
 224                 break;
 225
 226         default:
 227                 result = WERR_NO_SUCH_SERVICE;
 228                 goto done;
 229         }
 230
 231         info->access_granted = access_granted;
 232
 233         /* store the SERVICE_INFO and create an open handle */
 234
 235         if ( !create_policy_hnd( p, handle, free_service_handle_info, info ) ) {
 236                 result = WERR_ACCESS_DENIED;
 237                 goto done;
 238         }
 239
 240 done:
 241         if ( !W_ERROR_IS_OK(result) )
 242                 free_service_handle_info( info );
 243
 244         return result;
 245 }
 246
 247 /********************************************************************
 248 ********************************************************************/
 249
 250 WERROR _svcctl_open_scmanager(pipes_struct *p, SVCCTL_Q_OPEN_SCMANAGER *q_u, SVCCTL_R_OPEN_SCMANAGER *r_u)
 251 {
 252         SEC_DESC *sec_desc;
 253         uint32 access_granted = 0;
 254         NTSTATUS status;
 255
 256         /* perform access checks */
 257
 258         if ( !(sec_desc = construct_scm_sd( p->mem_ctx )) )
 259                 return WERR_NOMEM;
 260
 261         se_map_generic( &q_u->access, &scm_generic_map );
 262         status = svcctl_access_check( sec_desc, p->pipe_user.nt_user_token, q_u->access, &access_granted );
 263         if ( !NT_STATUS_IS_OK(status) )
 264                 return ntstatus_to_werror( status );
 265
 266         return create_open_service_handle( p, &r_u->handle, SVC_HANDLE_IS_SCM, NULL, access_granted );
 267 }
 268
 269 /********************************************************************
 270 ********************************************************************/
 271
 272 WERROR _svcctl_open_service(pipes_struct *p, SVCCTL_Q_OPEN_SERVICE *q_u, SVCCTL_R_OPEN_SERVICE *r_u)
 273 {
 274         SEC_DESC *sec_desc;
 275         uint32 access_granted = 0;
 276         NTSTATUS status;
 277         pstring service;
 278
 279         rpcstr_pull(service, q_u->servicename.buffer, sizeof(service), q_u->servicename.uni_str_len*2, 0);
 280
 281         DEBUG(5, ("_svcctl_open_service: Attempting to open Service [%s], \n", service));
 282
 283
 284         /* based on my tests you can open a service if you have a valid scm handle */
 285
 286         if ( !find_service_info_by_hnd( p, &q_u->handle ) )
 287                 return WERR_BADFID;
 288
 289         /* perform access checks.  Use the root token in order to ensure that we
 290            retreive the security descriptor */
 291
 292         if ( !(sec_desc = svcctl_get_secdesc( p->mem_ctx, service, get_root_nt_token() )) )
 293                 return WERR_NOMEM;
 294
 295         se_map_generic( &q_u->access, &svc_generic_map );
 296         status = svcctl_access_check( sec_desc, p->pipe_user.nt_user_token, q_u->access, &access_granted );
 297         if ( !NT_STATUS_IS_OK(status) )
 298                 return ntstatus_to_werror( status );
 299
 300         return create_open_service_handle( p, &r_u->handle, SVC_HANDLE_IS_SERVICE, service, access_granted );
 301 }
 302
 303 /********************************************************************
 304 ********************************************************************/
 305
 306 WERROR _svcctl_close_service(pipes_struct *p, SVCCTL_Q_CLOSE_SERVICE *q_u, SVCCTL_R_CLOSE_SERVICE *r_u)
 307 {
 308         return close_policy_hnd( p, &q_u->handle ) ? WERR_OK : WERR_BADFID;
 309 }
 310
 311 /********************************************************************
 312 ********************************************************************/
 313
 314 WERROR _svcctl_get_display_name(pipes_struct *p, SVCCTL_Q_GET_DISPLAY_NAME *q_u, SVCCTL_R_GET_DISPLAY_NAME *r_u)
 315 {
 316         fstring service;
 317         const char *display_name;
 318         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 319
 320         /* can only use an SCM handle here */
 321
 322         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 323                 return WERR_BADFID;
 324
 325         rpcstr_pull(service, q_u->servicename.buffer, sizeof(service), q_u->servicename.uni_str_len*2, 0);
 326
 327         display_name = svcctl_lookup_dispname( service, p->pipe_user.nt_user_token );
 328         init_svcctl_r_get_display_name( r_u, display_name );
 329
 330         return WERR_OK;
 331 }
 332
 333 /********************************************************************
 334 ********************************************************************/
 335
 336 WERROR _svcctl_query_status(pipes_struct *p, SVCCTL_Q_QUERY_STATUS *q_u, SVCCTL_R_QUERY_STATUS *r_u)
 337 {
 338         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 339
 340         /* perform access checks */
 341
 342         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 343                 return WERR_BADFID;
 344
 345         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 346                 return WERR_ACCESS_DENIED;
 347
 348         /* try the service specific status call */
 349
 350         return info->ops->service_status( info->name, &r_u->svc_status );
 351 }
 352
 353 /********************************************************************
 354 ********************************************************************/
 355
 356 static int enumerate_status( TALLOC_CTX *ctx, ENUM_SERVICES_STATUS **status, NT_USER_TOKEN *token )
 357 {
 358         int num_services = 0;
 359         int i;
 360         ENUM_SERVICES_STATUS *st;
 361         const char *display_name;
 362
 363         /* just count */
 364         while ( svcctl_ops[num_services].name )
 365                 num_services++;
 366
 367         if ( !(st = TALLOC_ARRAY( ctx, ENUM_SERVICES_STATUS, num_services )) ) {
 368                 DEBUG(0,("enumerate_status: talloc() failed!\n"));
 369                 return -1;
 370         }
 371
 372         for ( i=0; i<num_services; i++ ) {
 373                 init_unistr( &st[i].servicename, svcctl_ops[i].name );
 374
 375                 display_name = svcctl_lookup_dispname( svcctl_ops[i].name, token );
 376                 init_unistr( &st[i].displayname, display_name );
 377
 378                 svcctl_ops[i].ops->service_status( svcctl_ops[i].name, &st[i].status );
 379         }
 380
 381         *status = st;
 382
 383         return num_services;
 384 }
 385
 386 /********************************************************************
 387 ********************************************************************/
 388
 389 WERROR _svcctl_enum_services_status(pipes_struct *p, SVCCTL_Q_ENUM_SERVICES_STATUS *q_u, SVCCTL_R_ENUM_SERVICES_STATUS *r_u)
 390 {
 391         ENUM_SERVICES_STATUS *services = NULL;
 392         uint32 num_services;
 393         int i = 0;
 394         size_t buffer_size = 0;
 395         WERROR result = WERR_OK;
 396         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 397         NT_USER_TOKEN *token = p->pipe_user.nt_user_token;
 398
 399         /* perform access checks */
 400
 401         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 402                 return WERR_BADFID;
 403
 404         if ( !(info->access_granted & SC_RIGHT_MGR_ENUMERATE_SERVICE) )
 405                 return WERR_ACCESS_DENIED;
 406
 407         if ( (num_services = enumerate_status( p->mem_ctx, &services, token )) == -1 )
 408                 return WERR_NOMEM;
 409
 410         for ( i=0; i<num_services; i++ ) {
 411                 buffer_size += svcctl_sizeof_enum_services_status(&services[i]);
 412         }
 413
 414         buffer_size += buffer_size % 4;
 415
 416         if (buffer_size > q_u->buffer_size ) {
 417                 num_services = 0;
 418                 result = WERR_MORE_DATA;
 419         }
 420
 421         rpcbuf_init(&r_u->buffer, q_u->buffer_size, p->mem_ctx);
 422
 423         if ( W_ERROR_IS_OK(result) ) {
 424                 for ( i=0; i<num_services; i++ )
 425                         svcctl_io_enum_services_status( "", &services[i], &r_u->buffer, 0 );
 426         }
 427
 428         r_u->needed      = (buffer_size > q_u->buffer_size) ? buffer_size : q_u->buffer_size;
 429         r_u->returned    = num_services;
 430
 431         if ( !(r_u->resume = TALLOC_P( p->mem_ctx, uint32 )) )
 432                 return WERR_NOMEM;
 433
 434         *r_u->resume = 0x0;
 435
 436         return result;
 437 }
 438
 439 /********************************************************************
 440 ********************************************************************/
 441
 442 WERROR _svcctl_start_service(pipes_struct *p, SVCCTL_Q_START_SERVICE *q_u, SVCCTL_R_START_SERVICE *r_u)
 443 {
 444         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 445
 446         /* perform access checks */
 447
 448         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 449                 return WERR_BADFID;
 450
 451         if ( !(info->access_granted & SC_RIGHT_SVC_START) )
 452                 return WERR_ACCESS_DENIED;
 453
 454         return info->ops->start_service( info->name );
 455 }
 456
 457 /********************************************************************
 458 ********************************************************************/
 459
 460 WERROR _svcctl_control_service(pipes_struct *p, SVCCTL_Q_CONTROL_SERVICE *q_u, SVCCTL_R_CONTROL_SERVICE *r_u)
 461 {
 462         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 463
 464         /* perform access checks */
 465
 466         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 467                 return WERR_BADFID;
 468
 469         switch ( q_u->control ) {
 470         case SVCCTL_CONTROL_STOP:
 471                 if ( !(info->access_granted & SC_RIGHT_SVC_STOP) )
 472                         return WERR_ACCESS_DENIED;
 473
 474                 return info->ops->stop_service( info->name, &r_u->svc_status );
 475
 476         case SVCCTL_CONTROL_INTERROGATE:
 477                 if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 478                         return WERR_ACCESS_DENIED;
 479
 480                 return info->ops->service_status( info->name, &r_u->svc_status );
 481         }
 482
 483         /* default control action */
 484
 485         return WERR_ACCESS_DENIED;
 486 }
 487
 488 /********************************************************************
 489 ********************************************************************/
 490
 491 WERROR _svcctl_enum_dependent_services( pipes_struct *p, SVCCTL_Q_ENUM_DEPENDENT_SERVICES *q_u, SVCCTL_R_ENUM_DEPENDENT_SERVICES *r_u )
 492 {
 493         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 494
 495         /* perform access checks */
 496
 497         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 498                 return WERR_BADFID;
 499
 500         if ( !(info->access_granted & SC_RIGHT_SVC_ENUMERATE_DEPENDENTS) )
 501                 return WERR_ACCESS_DENIED;
 502
 503         /* we have to set the outgoing buffer size to the same as the
 504            incoming buffer size (even in the case of failure */
 505
 506         rpcbuf_init( &r_u->buffer, q_u->buffer_size, p->mem_ctx );
 507
 508         r_u->needed      = q_u->buffer_size;
 509
 510         /* no dependent services...basically a stub function */
 511         r_u->returned    = 0;
 512
 513         return WERR_OK;
 514 }
 515
 516 /********************************************************************
 517 ********************************************************************/
 518
 519 WERROR _svcctl_query_service_status_ex( pipes_struct *p, SVCCTL_Q_QUERY_SERVICE_STATUSEX *q_u, SVCCTL_R_QUERY_SERVICE_STATUSEX *r_u )
 520 {
 521         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 522         uint32 buffer_size;
 523
 524         /* perform access checks */
 525
 526         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 527                 return WERR_BADFID;
 528
 529         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 530                 return WERR_ACCESS_DENIED;
 531
 532         /* we have to set the outgoing buffer size to the same as the
 533            incoming buffer size (even in the case of failure) */
 534
 535         rpcbuf_init( &r_u->buffer, q_u->buffer_size, p->mem_ctx );
 536         r_u->needed = q_u->buffer_size;
 537
 538         switch ( q_u->level ) {
 539                 case SVC_STATUS_PROCESS_INFO:
 540                 {
 541                         SERVICE_STATUS_PROCESS svc_stat_proc;
 542
 543                         /* Get the status of the service.. */
 544                         info->ops->service_status( info->name, &svc_stat_proc.status );
 545                         svc_stat_proc.process_id     = sys_getpid();
 546                         svc_stat_proc.service_flags  = 0x0;
 547
 548                         svcctl_io_service_status_process( "", &svc_stat_proc, &r_u->buffer, 0 );
 549                         buffer_size = sizeof(SERVICE_STATUS_PROCESS);
 550                         break;
 551                 }
 552
 553                 default:
 554                         return WERR_UNKNOWN_LEVEL;
 555         }
 556
 557
 558         buffer_size += buffer_size % 4;
 559         r_u->needed = (buffer_size > q_u->buffer_size) ? buffer_size : q_u->buffer_size;
 560
 561         if (buffer_size > q_u->buffer_size )
 562                 return WERR_MORE_DATA;
 563
 564         return WERR_OK;
 565 }
 566
 567 /********************************************************************
 568 ********************************************************************/
 569
 570 static WERROR fill_svc_config( TALLOC_CTX *ctx, const char *name, SERVICE_CONFIG *config, NT_USER_TOKEN *token )
 571 {
 572         REGVAL_CTR *values;
 573         REGISTRY_VALUE *val;
 574
 575         /* retrieve the registry values for this service */
 576
 577         if ( !(values = svcctl_fetch_regvalues( name, token )) )
 578                 return WERR_REG_CORRUPT;
 579
 580         /* now fill in the individual values */
 581
 582         config->displayname = TALLOC_ZERO_P( ctx, UNISTR2 );
 583         if ( (val = regval_ctr_getvalue( values, "DisplayName" )) != NULL )
 584                 init_unistr2( config->displayname, regval_sz( val ), UNI_STR_TERMINATE );
 585         else
 586                 init_unistr2( config->displayname, name, UNI_STR_TERMINATE );
 587
 588         if ( (val = regval_ctr_getvalue( values, "ObjectName" )) != NULL ) {
 589                 config->startname = TALLOC_ZERO_P( ctx, UNISTR2 );
 590                 init_unistr2( config->startname, regval_sz( val ), UNI_STR_TERMINATE );
 591         }
 592
 593         if ( (val = regval_ctr_getvalue( values, "ImagePath" )) != NULL ) {
 594                 config->executablepath = TALLOC_ZERO_P( ctx, UNISTR2 );
 595                 init_unistr2( config->executablepath, regval_sz( val ), UNI_STR_TERMINATE );
 596         }
 597
 598         /* a few hard coded values */
 599         /* loadordergroup and dependencies are empty */
 600
 601         config->tag_id           = 0x00000000;                  /* unassigned loadorder group */
 602         config->service_type     = SVCCTL_WIN32_OWN_PROC;
 603         config->start_type       = SVCCTL_DEMAND_START;
 604         config->error_control    = SVCCTL_SVC_ERROR_NORMAL;
 605
 606         TALLOC_FREE( values );
 607
 608         return WERR_OK;
 609 }
 610
 611 /********************************************************************
 612 ********************************************************************/
 613
 614 WERROR _svcctl_query_service_config( pipes_struct *p, SVCCTL_Q_QUERY_SERVICE_CONFIG *q_u, SVCCTL_R_QUERY_SERVICE_CONFIG *r_u )
 615 {
 616         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 617         uint32 buffer_size;
 618         WERROR wresult;
 619
 620         /* perform access checks */
 621
 622         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 623                 return WERR_BADFID;
 624
 625         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_CONFIG) )
 626                 return WERR_ACCESS_DENIED;
 627
 628         /* we have to set the outgoing buffer size to the same as the
 629            incoming buffer size (even in the case of failure */
 630
 631         r_u->needed      = q_u->buffer_size;
 632
 633         wresult = fill_svc_config( p->mem_ctx, info->name, &r_u->config, p->pipe_user.nt_user_token );
 634         if ( !W_ERROR_IS_OK(wresult) )
 635                 return wresult;
 636
 637         buffer_size = svcctl_sizeof_service_config( &r_u->config );
 638         r_u->needed = (buffer_size > q_u->buffer_size) ? buffer_size : q_u->buffer_size;
 639
 640         if (buffer_size > q_u->buffer_size ) {
 641                 ZERO_STRUCTP( &r_u->config );
 642                 return WERR_INSUFFICIENT_BUFFER;
 643         }
 644
 645         return WERR_OK;
 646 }
 647
 648 /********************************************************************
 649 ********************************************************************/
 650
 651 WERROR _svcctl_query_service_config2( pipes_struct *p, SVCCTL_Q_QUERY_SERVICE_CONFIG2 *q_u, SVCCTL_R_QUERY_SERVICE_CONFIG2 *r_u )
 652 {
 653         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 654         uint32 buffer_size;
 655
 656         /* perform access checks */
 657
 658         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 659                 return WERR_BADFID;
 660
 661         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_CONFIG) )
 662                 return WERR_ACCESS_DENIED;
 663
 664         /* we have to set the outgoing buffer size to the same as the
 665            incoming buffer size (even in the case of failure */
 666
 667         rpcbuf_init( &r_u->buffer, q_u->buffer_size, p->mem_ctx );
 668         r_u->needed = q_u->buffer_size;
 669
 670         switch ( q_u->level ) {
 671         case SERVICE_CONFIG_DESCRIPTION:
 672                 {
 673                         SERVICE_DESCRIPTION desc_buf;
 674                         const char *description;
 675
 676                         description = svcctl_lookup_description( info->name, p->pipe_user.nt_user_token );
 677
 678                         ZERO_STRUCTP( &desc_buf );
 679
 680                         init_service_description_buffer( &desc_buf, description );
 681                         svcctl_io_service_description( "", &desc_buf, &r_u->buffer, 0 );
 682                         buffer_size = svcctl_sizeof_service_description( &desc_buf );
 683
 684                         break;
 685                 }
 686                 break;
 687         case SERVICE_CONFIG_FAILURE_ACTIONS:
 688                 {
 689                         SERVICE_FAILURE_ACTIONS actions;
 690
 691                         /* nothing to say...just service the request */
 692
 693                         ZERO_STRUCTP( &actions );
 694                         svcctl_io_service_fa( "", &actions, &r_u->buffer, 0 );
 695                         buffer_size = svcctl_sizeof_service_fa( &actions );
 696
 697                         break;
 698                 }
 699                 break;
 700
 701         default:
 702                 return WERR_UNKNOWN_LEVEL;
 703         }
 704
 705         buffer_size += buffer_size % 4;
 706         r_u->needed = (buffer_size > q_u->buffer_size) ? buffer_size : q_u->buffer_size;
 707
 708         if (buffer_size > q_u->buffer_size )
 709                 return WERR_INSUFFICIENT_BUFFER;
 710
 711         return WERR_OK;
 712 }
 713
 714 /********************************************************************
 715 ********************************************************************/
 716
 717 WERROR _svcctl_lock_service_db( pipes_struct *p, SVCCTL_Q_LOCK_SERVICE_DB *q_u, SVCCTL_R_LOCK_SERVICE_DB *r_u )
 718 {
 719         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->handle );
 720
 721         /* perform access checks */
 722
 723         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 724                 return WERR_BADFID;
 725
 726         if ( !(info->access_granted & SC_RIGHT_MGR_LOCK) )
 727                 return WERR_ACCESS_DENIED;
 728
 729         /* Just open a handle.  Doesn't actually lock anything */
 730
 731         return create_open_service_handle( p, &r_u->h_lock, SVC_HANDLE_IS_DBLOCK, NULL, 0 );
 732 ;
 733 }
 734
 735 /********************************************************************
 736 ********************************************************************/
 737
 738 WERROR _svcctl_unlock_service_db( pipes_struct *p, SVCCTL_Q_UNLOCK_SERVICE_DB *q_u, SVCCTL_R_UNLOCK_SERVICE_DB *r_u )
 739 {
 740         SERVICE_INFO *info = find_service_info_by_hnd( p, &q_u->h_lock );
 741
 742
 743         if ( !info || (info->type != SVC_HANDLE_IS_DBLOCK) )
 744                 return WERR_BADFID;
 745
 746         return close_policy_hnd( p, &q_u->h_lock) ? WERR_OK : WERR_BADFID;
 747 }