source3/rpc_server/svcctl/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  *  Copyright (C) Guenther Deschner                 2008,2009.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 3 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include "includes.h"
  26 #include "ntdomain.h"
  27 #include "../librpc/gen_ndr/srv_svcctl.h"
  28 #include "../libcli/security/security.h"
  29 #include "../librpc/gen_ndr/ndr_security.h"
  30 #include "services/services.h"
  31 #include "services/svc_winreg_glue.h"
  32 #include "auth.h"
  33 #include "rpc_server/svcctl/srv_svcctl_nt.h"
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_RPC_SRV
  37
  38 struct service_control_op {
  39         const char *name;
  40         SERVICE_CONTROL_OPS *ops;
  41 };
  42
  43 /* handle external services */
  44 extern SERVICE_CONTROL_OPS rcinit_svc_ops;
  45
  46 /* builtin services (see service_db.c and services/svc_*.c */
  47 extern SERVICE_CONTROL_OPS spoolss_svc_ops;
  48 extern SERVICE_CONTROL_OPS netlogon_svc_ops;
  49 extern SERVICE_CONTROL_OPS winreg_svc_ops;
  50 extern SERVICE_CONTROL_OPS wins_svc_ops;
  51
  52 /* make sure this number patches the number of builtin
  53    SERVICE_CONTROL_OPS structure listed above */
  54
  55 #define SVCCTL_NUM_INTERNAL_SERVICES    4
  56
  57 struct service_control_op *svcctl_ops;
  58
  59 static const struct generic_mapping scm_generic_map =
  60         { SC_MANAGER_READ_ACCESS, SC_MANAGER_WRITE_ACCESS, SC_MANAGER_EXECUTE_ACCESS, SC_MANAGER_ALL_ACCESS };
  61 static const struct generic_mapping svc_generic_map =
  62         { SERVICE_READ_ACCESS, SERVICE_WRITE_ACCESS, SERVICE_EXECUTE_ACCESS, SERVICE_ALL_ACCESS };
  63
  64
  65 /********************************************************************
  66 ********************************************************************/
  67
  68 bool init_service_op_table( void )
  69 {
  70         const char **service_list = lp_svcctl_list();
  71         int num_services = SVCCTL_NUM_INTERNAL_SERVICES + str_list_length( service_list );
  72         int i;
  73
  74         if ( !(svcctl_ops = talloc_array( NULL, struct service_control_op, num_services+1)) ) {
  75                 DEBUG(0,("init_service_op_table: talloc() failed!\n"));
  76                 return False;
  77         }
  78
  79         /* services listed in smb.conf get the rc.init interface */
  80
  81         for ( i=0; service_list && service_list[i]; i++ ) {
  82                 svcctl_ops[i].name = talloc_strdup( svcctl_ops, service_list[i] );
  83                 svcctl_ops[i].ops  = &rcinit_svc_ops;
  84         }
  85
  86         /* add builtin services */
  87
  88         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "Spooler" );
  89         svcctl_ops[i].ops  = &spoolss_svc_ops;
  90         i++;
  91
  92         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "NETLOGON" );
  93         svcctl_ops[i].ops  = &netlogon_svc_ops;
  94         i++;
  95
  96         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "RemoteRegistry" );
  97         svcctl_ops[i].ops  = &winreg_svc_ops;
  98         i++;
  99
 100         svcctl_ops[i].name = talloc_strdup( svcctl_ops, "WINS" );
 101         svcctl_ops[i].ops  = &wins_svc_ops;
 102         i++;
 103
 104         /* NULL terminate the array */
 105
 106         svcctl_ops[i].name = NULL;
 107         svcctl_ops[i].ops  = NULL;
 108
 109         return True;
 110 }
 111
 112 bool shutdown_service_op_table(void)
 113 {
 114         TALLOC_FREE(svcctl_ops);
 115
 116         return true;
 117 }
 118
 119 /********************************************************************
 120 ********************************************************************/
 121
 122 static struct service_control_op* find_service_by_name( const char *name )
 123 {
 124         int i;
 125
 126         for ( i=0; svcctl_ops[i].name; i++ ) {
 127                 if ( strequal( name, svcctl_ops[i].name ) )
 128                         return &svcctl_ops[i];
 129         }
 130
 131         return NULL;
 132 }
 133 /********************************************************************
 134 ********************************************************************/
 135
 136 static NTSTATUS svcctl_access_check( struct security_descriptor *sec_desc, struct security_token *token,
 137                                      uint32 access_desired, uint32 *access_granted )
 138 {
 139         if ( geteuid() == sec_initial_uid() ) {
 140                 DEBUG(5,("svcctl_access_check: using root's token\n"));
 141                 token = get_root_nt_token();
 142         }
 143
 144         return se_access_check( sec_desc, token, access_desired, access_granted);
 145 }
 146
 147 /********************************************************************
 148 ********************************************************************/
 149
 150 static struct security_descriptor* construct_scm_sd( TALLOC_CTX *ctx )
 151 {
 152         struct security_ace ace[2];
 153         size_t i = 0;
 154         struct security_descriptor *sd;
 155         struct security_acl *theacl;
 156         size_t sd_size;
 157
 158         /* basic access for Everyone */
 159
 160         init_sec_ace(&ace[i++], &global_sid_World,
 161                 SEC_ACE_TYPE_ACCESS_ALLOWED, SC_MANAGER_READ_ACCESS, 0);
 162
 163         /* Full Access 'BUILTIN\Administrators' */
 164
 165         init_sec_ace(&ace[i++], &global_sid_Builtin_Administrators,
 166                 SEC_ACE_TYPE_ACCESS_ALLOWED, SC_MANAGER_ALL_ACCESS, 0);
 167
 168
 169         /* create the security descriptor */
 170
 171         if ( !(theacl = make_sec_acl(ctx, NT4_ACL_REVISION, i, ace)) )
 172                 return NULL;
 173
 174         if ( !(sd = make_sec_desc(ctx, SECURITY_DESCRIPTOR_REVISION_1,
 175                                   SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL,
 176                                   theacl, &sd_size)) )
 177                 return NULL;
 178
 179         return sd;
 180 }
 181
 182 /******************************************************************
 183  Find a registry key handle and return a SERVICE_INFO
 184  *****************************************************************/
 185
 186 static SERVICE_INFO *find_service_info_by_hnd(struct pipes_struct *p,
 187                                               struct policy_handle *hnd)
 188 {
 189         SERVICE_INFO *service_info = NULL;
 190
 191         if( !find_policy_by_hnd( p, hnd, (void **)(void *)&service_info) ) {
 192                 DEBUG(2,("find_service_info_by_hnd: handle not found\n"));
 193                 return NULL;
 194         }
 195
 196         return service_info;
 197 }
 198
 199 /******************************************************************
 200  *****************************************************************/
 201
 202 static WERROR create_open_service_handle(struct pipes_struct *p,
 203                                          struct policy_handle *handle,
 204                                          uint32_t type,
 205                                          const char *service,
 206                                          uint32_t access_granted)
 207 {
 208         SERVICE_INFO *info = NULL;
 209         WERROR result = WERR_OK;
 210         struct service_control_op *s_op;
 211
 212         if ( !(info = TALLOC_ZERO_P( NULL, SERVICE_INFO )) )
 213                 return WERR_NOMEM;
 214
 215         /* the Service Manager has a NULL name */
 216
 217         info->type = SVC_HANDLE_IS_SCM;
 218
 219         switch ( type ) {
 220         case SVC_HANDLE_IS_SCM:
 221                 info->type = SVC_HANDLE_IS_SCM;
 222                 break;
 223
 224         case SVC_HANDLE_IS_DBLOCK:
 225                 info->type = SVC_HANDLE_IS_DBLOCK;
 226                 break;
 227
 228         case SVC_HANDLE_IS_SERVICE:
 229                 info->type = SVC_HANDLE_IS_SERVICE;
 230
 231                 /* lookup the SERVICE_CONTROL_OPS */
 232
 233                 if ( !(s_op = find_service_by_name( service )) ) {
 234                         result = WERR_NO_SUCH_SERVICE;
 235                         goto done;
 236                 }
 237
 238                 info->ops = s_op->ops;
 239
 240                 if ( !(info->name  = talloc_strdup( info, s_op->name )) ) {
 241                         result = WERR_NOMEM;
 242                         goto done;
 243                 }
 244                 break;
 245
 246         default:
 247                 result = WERR_NO_SUCH_SERVICE;
 248                 goto done;
 249         }
 250
 251         info->access_granted = access_granted;
 252
 253         /* store the SERVICE_INFO and create an open handle */
 254
 255         if ( !create_policy_hnd( p, handle, info ) ) {
 256                 result = WERR_ACCESS_DENIED;
 257                 goto done;
 258         }
 259
 260 done:
 261         if ( !W_ERROR_IS_OK(result) )
 262                 TALLOC_FREE(info);
 263
 264         return result;
 265 }
 266
 267 /********************************************************************
 268  _svcctl_OpenSCManagerW
 269 ********************************************************************/
 270
 271 WERROR _svcctl_OpenSCManagerW(struct pipes_struct *p,
 272                               struct svcctl_OpenSCManagerW *r)
 273 {
 274         struct security_descriptor *sec_desc;
 275         uint32 access_granted = 0;
 276         NTSTATUS status;
 277
 278         /* perform access checks */
 279
 280         if ( !(sec_desc = construct_scm_sd( p->mem_ctx )) )
 281                 return WERR_NOMEM;
 282
 283         se_map_generic( &r->in.access_mask, &scm_generic_map );
 284         status = svcctl_access_check( sec_desc, p->session_info->security_token,
 285                                       r->in.access_mask, &access_granted );
 286         if ( !NT_STATUS_IS_OK(status) )
 287                 return ntstatus_to_werror( status );
 288
 289         return create_open_service_handle( p, r->out.handle, SVC_HANDLE_IS_SCM, NULL, access_granted );
 290 }
 291
 292 /********************************************************************
 293  _svcctl_OpenServiceW
 294 ********************************************************************/
 295
 296 WERROR _svcctl_OpenServiceW(struct pipes_struct *p,
 297                             struct svcctl_OpenServiceW *r)
 298 {
 299         struct security_descriptor *sec_desc;
 300         uint32 access_granted = 0;
 301         NTSTATUS status;
 302         const char *service = NULL;
 303
 304         service = r->in.ServiceName;
 305         if (!service) {
 306                 return WERR_NOMEM;
 307         }
 308         DEBUG(5, ("_svcctl_OpenServiceW: Attempting to open Service [%s], \n", service));
 309
 310         /* based on my tests you can open a service if you have a valid scm handle */
 311
 312         if ( !find_service_info_by_hnd( p, r->in.scmanager_handle) )
 313                 return WERR_BADFID;
 314
 315         /*
 316          * Perform access checks. Use the system session_info in order to ensure
 317          * that we retrieve the security descriptor
 318          */
 319         sec_desc = svcctl_get_secdesc(p->mem_ctx,
 320                                       p->msg_ctx,
 321                                       get_session_info_system(),
 322                                       service);
 323         if (sec_desc == NULL) {
 324                 DEBUG(0, ("_svcctl_OpenServiceW: Failed to get a valid security "
 325                           "descriptor"));
 326                 return WERR_NOMEM;
 327         }
 328
 329         se_map_generic( &r->in.access_mask, &svc_generic_map );
 330         status = svcctl_access_check( sec_desc, p->session_info->security_token,
 331                                       r->in.access_mask, &access_granted );
 332         if ( !NT_STATUS_IS_OK(status) )
 333                 return ntstatus_to_werror( status );
 334
 335         return create_open_service_handle( p, r->out.handle, SVC_HANDLE_IS_SERVICE, service, access_granted );
 336 }
 337
 338 /********************************************************************
 339  _svcctl_CloseServiceHandle
 340 ********************************************************************/
 341
 342 WERROR _svcctl_CloseServiceHandle(struct pipes_struct *p,
 343                                   struct svcctl_CloseServiceHandle *r)
 344 {
 345         if ( !close_policy_hnd( p, r->in.handle ) )
 346                 return  WERR_BADFID;
 347
 348         ZERO_STRUCTP(r->out.handle);
 349
 350         return WERR_OK;
 351 }
 352
 353 /********************************************************************
 354  _svcctl_GetServiceDisplayNameW
 355 ********************************************************************/
 356
 357 WERROR _svcctl_GetServiceDisplayNameW(struct pipes_struct *p,
 358                                       struct svcctl_GetServiceDisplayNameW *r)
 359 {
 360         const char *service;
 361         const char *display_name;
 362         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 363
 364         /* can only use an SCM handle here */
 365
 366         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 367                 return WERR_BADFID;
 368
 369         service = r->in.service_name;
 370
 371         display_name = svcctl_lookup_dispname(p->mem_ctx,
 372                                               p->msg_ctx,
 373                                               p->session_info,
 374                                               service);
 375         if (!display_name) {
 376                 display_name = "";
 377         }
 378
 379         *r->out.display_name = display_name;
 380         *r->out.display_name_length = strlen(display_name);
 381
 382         return WERR_OK;
 383 }
 384
 385 /********************************************************************
 386  _svcctl_QueryServiceStatus
 387 ********************************************************************/
 388
 389 WERROR _svcctl_QueryServiceStatus(struct pipes_struct *p,
 390                                   struct svcctl_QueryServiceStatus *r)
 391 {
 392         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 393
 394         /* perform access checks */
 395
 396         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 397                 return WERR_BADFID;
 398
 399         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 400                 return WERR_ACCESS_DENIED;
 401
 402         /* try the service specific status call */
 403
 404         return info->ops->service_status( info->name, r->out.service_status );
 405 }
 406
 407 /********************************************************************
 408 ********************************************************************/
 409
 410 static int enumerate_status(TALLOC_CTX *ctx,
 411                             struct messaging_context *msg_ctx,
 412                             struct auth_serversupplied_info *session_info,
 413                             struct ENUM_SERVICE_STATUSW **status)
 414 {
 415         int num_services = 0;
 416         int i;
 417         struct ENUM_SERVICE_STATUSW *st;
 418         const char *display_name;
 419
 420         /* just count */
 421         while ( svcctl_ops[num_services].name )
 422                 num_services++;
 423
 424         if ( !(st = talloc_array( ctx, struct ENUM_SERVICE_STATUSW, num_services )) ) {
 425                 DEBUG(0,("enumerate_status: talloc() failed!\n"));
 426                 return -1;
 427         }
 428
 429         for ( i=0; i<num_services; i++ ) {
 430                 st[i].service_name = talloc_strdup(st, svcctl_ops[i].name );
 431
 432                 display_name = svcctl_lookup_dispname(ctx,
 433                                                       msg_ctx,
 434                                                       session_info,
 435                                                       svcctl_ops[i].name);
 436                 st[i].display_name = talloc_strdup(st, display_name ? display_name : "");
 437
 438                 svcctl_ops[i].ops->service_status( svcctl_ops[i].name, &st[i].status );
 439         }
 440
 441         *status = st;
 442
 443         return num_services;
 444 }
 445
 446 /********************************************************************
 447  _svcctl_EnumServicesStatusW
 448 ********************************************************************/
 449
 450 WERROR _svcctl_EnumServicesStatusW(struct pipes_struct *p,
 451                                    struct svcctl_EnumServicesStatusW *r)
 452 {
 453         struct ENUM_SERVICE_STATUSW *services = NULL;
 454         int num_services;
 455         int i = 0;
 456         size_t buffer_size = 0;
 457         WERROR result = WERR_OK;
 458         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 459         DATA_BLOB blob = data_blob_null;
 460
 461         /* perform access checks */
 462
 463         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 464                 return WERR_BADFID;
 465
 466         if ( !(info->access_granted & SC_RIGHT_MGR_ENUMERATE_SERVICE) ) {
 467                 return WERR_ACCESS_DENIED;
 468         }
 469
 470         num_services = enumerate_status(p->mem_ctx,
 471                                         p->msg_ctx,
 472                                         p->session_info,
 473                                         &services);
 474         if (num_services == -1 ) {
 475                 return WERR_NOMEM;
 476         }
 477
 478         for ( i=0; i<num_services; i++ ) {
 479                 buffer_size += ndr_size_ENUM_SERVICE_STATUSW(&services[i], 0);
 480         }
 481
 482         buffer_size += buffer_size % 4;
 483
 484         if (buffer_size > r->in.offered) {
 485                 num_services = 0;
 486                 result = WERR_MORE_DATA;
 487         }
 488
 489         if ( W_ERROR_IS_OK(result) ) {
 490
 491                 enum ndr_err_code ndr_err;
 492                 struct ndr_push *ndr;
 493
 494                 ndr = ndr_push_init_ctx(p->mem_ctx);
 495                 if (ndr == NULL) {
 496                         return WERR_INVALID_PARAM;
 497                 }
 498
 499                 ndr_err = ndr_push_ENUM_SERVICE_STATUSW_array(
 500                         ndr, num_services, services);
 501                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 502                         return ntstatus_to_werror(ndr_map_error2ntstatus(ndr_err));
 503                 }
 504                 blob = ndr_push_blob(ndr);
 505                 memcpy(r->out.service, blob.data, MIN(blob.length, r->in.offered));
 506         }
 507
 508         *r->out.needed                  = (buffer_size > r->in.offered) ? buffer_size : r->in.offered;
 509         *r->out.services_returned       = (uint32)num_services;
 510         if (r->out.resume_handle) {
 511                 *r->out.resume_handle   = 0;
 512         }
 513
 514         return result;
 515 }
 516
 517 /********************************************************************
 518  _svcctl_StartServiceW
 519 ********************************************************************/
 520
 521 WERROR _svcctl_StartServiceW(struct pipes_struct *p,
 522                              struct svcctl_StartServiceW *r)
 523 {
 524         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 525
 526         /* perform access checks */
 527
 528         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 529                 return WERR_BADFID;
 530
 531         if ( !(info->access_granted & SC_RIGHT_SVC_START) )
 532                 return WERR_ACCESS_DENIED;
 533
 534         return info->ops->start_service( info->name );
 535 }
 536
 537 /********************************************************************
 538  _svcctl_ControlService
 539 ********************************************************************/
 540
 541 WERROR _svcctl_ControlService(struct pipes_struct *p,
 542                               struct svcctl_ControlService *r)
 543 {
 544         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 545
 546         /* perform access checks */
 547
 548         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 549                 return WERR_BADFID;
 550
 551         switch ( r->in.control ) {
 552         case SVCCTL_CONTROL_STOP:
 553                 if ( !(info->access_granted & SC_RIGHT_SVC_STOP) )
 554                         return WERR_ACCESS_DENIED;
 555
 556                 return info->ops->stop_service( info->name,
 557                                                 r->out.service_status );
 558
 559         case SVCCTL_CONTROL_INTERROGATE:
 560                 if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 561                         return WERR_ACCESS_DENIED;
 562
 563                 return info->ops->service_status( info->name,
 564                                                   r->out.service_status );
 565         default:
 566                 return WERR_INVALID_PARAM;
 567         }
 568 }
 569
 570 /********************************************************************
 571  _svcctl_EnumDependentServicesW
 572 ********************************************************************/
 573
 574 WERROR _svcctl_EnumDependentServicesW(struct pipes_struct *p,
 575                                       struct svcctl_EnumDependentServicesW *r)
 576 {
 577         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.service );
 578
 579         /* perform access checks */
 580
 581         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 582                 return WERR_BADFID;
 583
 584         if ( !(info->access_granted & SC_RIGHT_SVC_ENUMERATE_DEPENDENTS) )
 585                 return WERR_ACCESS_DENIED;
 586
 587         switch (r->in.state) {
 588         case SERVICE_STATE_ACTIVE:
 589         case SERVICE_STATE_INACTIVE:
 590         case SERVICE_STATE_ALL:
 591                 break;
 592         default:
 593                 return WERR_INVALID_PARAM;
 594         }
 595
 596         /* we have to set the outgoing buffer size to the same as the
 597            incoming buffer size (even in the case of failure */
 598         /* this is done in the autogenerated server already - gd */
 599
 600         *r->out.needed = r->in.offered;
 601
 602         /* no dependent services...basically a stub function */
 603         *r->out.services_returned = 0;
 604
 605         return WERR_OK;
 606 }
 607
 608 /********************************************************************
 609  _svcctl_QueryServiceStatusEx
 610 ********************************************************************/
 611
 612 WERROR _svcctl_QueryServiceStatusEx(struct pipes_struct *p,
 613                                     struct svcctl_QueryServiceStatusEx *r)
 614 {
 615         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 616         uint32 buffer_size;
 617
 618         /* perform access checks */
 619
 620         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 621                 return WERR_BADFID;
 622
 623         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_STATUS) )
 624                 return WERR_ACCESS_DENIED;
 625
 626         /* we have to set the outgoing buffer size to the same as the
 627            incoming buffer size (even in the case of failure) */
 628         *r->out.needed = r->in.offered;
 629
 630         switch ( r->in.info_level ) {
 631                 case SVC_STATUS_PROCESS_INFO:
 632                 {
 633                         struct SERVICE_STATUS_PROCESS svc_stat_proc;
 634                         enum ndr_err_code ndr_err;
 635                         DATA_BLOB blob;
 636
 637                         /* Get the status of the service.. */
 638                         info->ops->service_status( info->name, &svc_stat_proc.status );
 639                         svc_stat_proc.process_id     = sys_getpid();
 640                         svc_stat_proc.service_flags  = 0x0;
 641
 642                         ndr_err = ndr_push_struct_blob(&blob, p->mem_ctx, &svc_stat_proc,
 643                                                        (ndr_push_flags_fn_t)ndr_push_SERVICE_STATUS_PROCESS);
 644                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 645                                 return WERR_INVALID_PARAM;
 646                         }
 647
 648                         r->out.buffer = blob.data;
 649                         buffer_size = sizeof(struct SERVICE_STATUS_PROCESS);
 650                         break;
 651                 }
 652
 653                 default:
 654                         return WERR_UNKNOWN_LEVEL;
 655         }
 656
 657
 658         buffer_size += buffer_size % 4;
 659         *r->out.needed = (buffer_size > r->in.offered) ? buffer_size : r->in.offered;
 660
 661         if (buffer_size > r->in.offered ) {
 662                 return WERR_INSUFFICIENT_BUFFER;
 663         }
 664
 665         return WERR_OK;
 666 }
 667
 668 /********************************************************************
 669 ********************************************************************/
 670
 671 static WERROR fill_svc_config(TALLOC_CTX *ctx,
 672                               struct messaging_context *msg_ctx,
 673                               struct auth_serversupplied_info *session_info,
 674                               const char *name,
 675                               struct QUERY_SERVICE_CONFIG *config)
 676 {
 677         TALLOC_CTX *mem_ctx = talloc_stackframe();
 678         const char *result = NULL;
 679
 680         /* now fill in the individual values */
 681
 682         config->displayname = svcctl_lookup_dispname(mem_ctx,
 683                                                      msg_ctx,
 684                                                      session_info,
 685                                                      name);
 686
 687         result = svcctl_get_string_value(mem_ctx,
 688                                          msg_ctx,
 689                                          session_info,
 690                                          name,
 691                                          "ObjectName");
 692         if (result != NULL) {
 693                 config->startname = result;
 694         }
 695
 696         result = svcctl_get_string_value(mem_ctx,
 697                                          msg_ctx,
 698                                          session_info,
 699                                          name,
 700                                          "ImagePath");
 701         if (result != NULL) {
 702                 config->executablepath = result;
 703         }
 704
 705         /* a few hard coded values */
 706         /* loadordergroup and dependencies are empty */
 707
 708         config->tag_id           = 0x00000000;                  /* unassigned loadorder group */
 709         config->service_type     = SERVICE_TYPE_WIN32_OWN_PROCESS;
 710         config->error_control    = SVCCTL_SVC_ERROR_NORMAL;
 711
 712         /* set the start type.  NetLogon and WINS are disabled to prevent
 713            the client from showing the "Start" button (if of course the services
 714            are not running */
 715
 716         if ( strequal( name, "NETLOGON" ) && ( lp_servicenumber(name) == -1 ) )
 717                 config->start_type = SVCCTL_DISABLED;
 718         else if ( strequal( name, "WINS" ) && ( !lp_wins_support() ))
 719                 config->start_type = SVCCTL_DISABLED;
 720         else
 721                 config->start_type = SVCCTL_DEMAND_START;
 722
 723
 724         talloc_free(mem_ctx);
 725
 726         return WERR_OK;
 727 }
 728
 729 /********************************************************************
 730  _svcctl_QueryServiceConfigW
 731 ********************************************************************/
 732
 733 WERROR _svcctl_QueryServiceConfigW(struct pipes_struct *p,
 734                                    struct svcctl_QueryServiceConfigW *r)
 735 {
 736         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 737         uint32 buffer_size;
 738         WERROR wresult;
 739
 740         /* perform access checks */
 741
 742         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 743                 return WERR_BADFID;
 744
 745         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_CONFIG) )
 746                 return WERR_ACCESS_DENIED;
 747
 748         /* we have to set the outgoing buffer size to the same as the
 749            incoming buffer size (even in the case of failure */
 750
 751         *r->out.needed = r->in.offered;
 752
 753         wresult = fill_svc_config(p->mem_ctx,
 754                                   p->msg_ctx,
 755                                   p->session_info,
 756                                   info->name,
 757                                   r->out.query);
 758         if ( !W_ERROR_IS_OK(wresult) )
 759                 return wresult;
 760
 761         buffer_size = ndr_size_QUERY_SERVICE_CONFIG(r->out.query, 0);
 762         *r->out.needed = (buffer_size > r->in.offered) ? buffer_size : r->in.offered;
 763
 764         if (buffer_size > r->in.offered ) {
 765                 ZERO_STRUCTP(r->out.query);
 766                 return WERR_INSUFFICIENT_BUFFER;
 767         }
 768
 769         return WERR_OK;
 770 }
 771
 772 /********************************************************************
 773  _svcctl_QueryServiceConfig2W
 774 ********************************************************************/
 775
 776 WERROR _svcctl_QueryServiceConfig2W(struct pipes_struct *p,
 777                                     struct svcctl_QueryServiceConfig2W *r)
 778 {
 779         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 780         uint32 buffer_size;
 781
 782         /* perform access checks */
 783
 784         if ( !info || (info->type != SVC_HANDLE_IS_SERVICE) )
 785                 return WERR_BADFID;
 786
 787         if ( !(info->access_granted & SC_RIGHT_SVC_QUERY_CONFIG) )
 788                 return WERR_ACCESS_DENIED;
 789
 790         /* we have to set the outgoing buffer size to the same as the
 791            incoming buffer size (even in the case of failure */
 792         *r->out.needed = r->in.offered;
 793
 794         switch ( r->in.info_level ) {
 795         case SERVICE_CONFIG_DESCRIPTION:
 796                 {
 797                         struct SERVICE_DESCRIPTION desc_buf;
 798                         const char *description;
 799                         enum ndr_err_code ndr_err;
 800                         DATA_BLOB blob;
 801
 802                         description = svcctl_lookup_description(p->mem_ctx,
 803                                                                 p->msg_ctx,
 804                                                                 p->session_info,
 805                                                                 info->name);
 806
 807                         desc_buf.description = description;
 808
 809                         ndr_err = ndr_push_struct_blob(&blob, p->mem_ctx, &desc_buf,
 810                                                        (ndr_push_flags_fn_t)ndr_push_SERVICE_DESCRIPTION);
 811                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 812                                 return WERR_INVALID_PARAM;
 813                         }
 814
 815                         buffer_size = ndr_size_SERVICE_DESCRIPTION(&desc_buf, 0);
 816                         r->out.buffer = blob.data;
 817
 818                         break;
 819                 }
 820                 break;
 821         case SERVICE_CONFIG_FAILURE_ACTIONS:
 822                 {
 823                         struct SERVICE_FAILURE_ACTIONS actions;
 824                         enum ndr_err_code ndr_err;
 825                         DATA_BLOB blob;
 826
 827                         /* nothing to say...just service the request */
 828
 829                         ZERO_STRUCT( actions );
 830
 831                         ndr_err = ndr_push_struct_blob(&blob, p->mem_ctx, &actions,
 832                                                        (ndr_push_flags_fn_t)ndr_push_SERVICE_FAILURE_ACTIONS);
 833                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 834                                 return WERR_INVALID_PARAM;
 835                         }
 836
 837                         buffer_size = ndr_size_SERVICE_FAILURE_ACTIONS(&actions, 0);
 838                         r->out.buffer = blob.data;
 839
 840                         break;
 841                 }
 842                 break;
 843
 844         default:
 845                 return WERR_UNKNOWN_LEVEL;
 846         }
 847
 848         buffer_size += buffer_size % 4;
 849         *r->out.needed = (buffer_size > r->in.offered) ? buffer_size : r->in.offered;
 850
 851         if (buffer_size > r->in.offered)
 852                 return WERR_INSUFFICIENT_BUFFER;
 853
 854         return WERR_OK;
 855 }
 856
 857 /********************************************************************
 858  _svcctl_LockServiceDatabase
 859 ********************************************************************/
 860
 861 WERROR _svcctl_LockServiceDatabase(struct pipes_struct *p,
 862                                    struct svcctl_LockServiceDatabase *r)
 863 {
 864         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 865
 866         /* perform access checks */
 867
 868         if ( !info || (info->type != SVC_HANDLE_IS_SCM) )
 869                 return WERR_BADFID;
 870
 871         if ( !(info->access_granted & SC_RIGHT_MGR_LOCK) )
 872                 return WERR_ACCESS_DENIED;
 873
 874         /* Just open a handle.  Doesn't actually lock anything */
 875
 876         return create_open_service_handle( p, r->out.lock, SVC_HANDLE_IS_DBLOCK, NULL, 0 );
 877 }
 878
 879 /********************************************************************
 880  _svcctl_UnlockServiceDatabase
 881 ********************************************************************/
 882
 883 WERROR _svcctl_UnlockServiceDatabase(struct pipes_struct *p,
 884                                      struct svcctl_UnlockServiceDatabase *r)
 885 {
 886         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.lock );
 887
 888
 889         if ( !info || (info->type != SVC_HANDLE_IS_DBLOCK) )
 890                 return WERR_BADFID;
 891
 892         return close_policy_hnd( p, r->out.lock) ? WERR_OK : WERR_BADFID;
 893 }
 894
 895 /********************************************************************
 896  _svcctl_QueryServiceObjectSecurity
 897 ********************************************************************/
 898
 899 WERROR _svcctl_QueryServiceObjectSecurity(struct pipes_struct *p,
 900                                           struct svcctl_QueryServiceObjectSecurity *r)
 901 {
 902         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 903         struct security_descriptor *sec_desc;
 904         NTSTATUS status;
 905         uint8_t *buffer = NULL;
 906         size_t len = 0;
 907
 908
 909         /* only support the SCM and individual services */
 910
 911         if ( !info || !(info->type & (SVC_HANDLE_IS_SERVICE|SVC_HANDLE_IS_SCM)) )
 912                 return WERR_BADFID;
 913
 914         /* check access reights (according to MSDN) */
 915
 916         if ( !(info->access_granted & SEC_STD_READ_CONTROL) )
 917                 return WERR_ACCESS_DENIED;
 918
 919         /* TODO: handle something besides SECINFO_DACL */
 920
 921         if ( (r->in.security_flags & SECINFO_DACL) != SECINFO_DACL )
 922                 return WERR_INVALID_PARAM;
 923
 924         /* Lookup the security descriptor and marshall it up for a reply */
 925         sec_desc = svcctl_get_secdesc(p->mem_ctx,
 926                                       p->msg_ctx,
 927                                       get_session_info_system(),
 928                                       info->name);
 929         if (sec_desc == NULL) {
 930                 return WERR_NOMEM;
 931         }
 932
 933         *r->out.needed = ndr_size_security_descriptor(sec_desc, 0);
 934
 935         if ( *r->out.needed > r->in.offered) {
 936                 return WERR_INSUFFICIENT_BUFFER;
 937         }
 938
 939         status = marshall_sec_desc(p->mem_ctx, sec_desc, &buffer, &len);
 940         if (!NT_STATUS_IS_OK(status)) {
 941                 return ntstatus_to_werror(status);
 942         }
 943
 944         *r->out.needed = len;
 945         r->out.buffer = buffer;
 946
 947         return WERR_OK;
 948 }
 949
 950 /********************************************************************
 951  _svcctl_SetServiceObjectSecurity
 952 ********************************************************************/
 953
 954 WERROR _svcctl_SetServiceObjectSecurity(struct pipes_struct *p,
 955                                         struct svcctl_SetServiceObjectSecurity *r)
 956 {
 957         SERVICE_INFO *info = find_service_info_by_hnd( p, r->in.handle );
 958         struct security_descriptor *sec_desc = NULL;
 959         uint32 required_access;
 960         NTSTATUS status;
 961
 962         if ( !info || !(info->type & (SVC_HANDLE_IS_SERVICE|SVC_HANDLE_IS_SCM))  )
 963                 return WERR_BADFID;
 964
 965         /* can't set the security de4scriptor on the ServiceControlManager */
 966
 967         if ( info->type == SVC_HANDLE_IS_SCM )
 968                 return WERR_ACCESS_DENIED;
 969
 970         /* check the access on the open handle */
 971
 972         switch ( r->in.security_flags ) {
 973                 case SECINFO_DACL:
 974                         required_access = SEC_STD_WRITE_DAC;
 975                         break;
 976
 977                 case SECINFO_OWNER:
 978                 case SECINFO_GROUP:
 979                         required_access = SEC_STD_WRITE_OWNER;
 980                         break;
 981
 982                 case SECINFO_SACL:
 983                         return WERR_INVALID_PARAM;
 984                 default:
 985                         return WERR_INVALID_PARAM;
 986         }
 987
 988         if ( !(info->access_granted & required_access) )
 989                 return WERR_ACCESS_DENIED;
 990
 991         /* read the security descfriptor */
 992
 993         status = unmarshall_sec_desc(p->mem_ctx,
 994                                      r->in.buffer,
 995                                      r->in.offered,
 996                                      &sec_desc);
 997         if (!NT_STATUS_IS_OK(status)) {
 998                 return ntstatus_to_werror(status);
 999         }
1000
1001         /* store the new SD */
1002
1003         if (!svcctl_set_secdesc(p->msg_ctx, p->session_info, info->name, sec_desc))
1004                 return WERR_ACCESS_DENIED;
1005
1006         return WERR_OK;
1007 }
1008
1009
1010 WERROR _svcctl_DeleteService(struct pipes_struct *p,
1011                              struct svcctl_DeleteService *r)
1012 {
1013         p->rng_fault_state = True;
1014         return WERR_NOT_SUPPORTED;
1015 }
1016
1017 WERROR _svcctl_SetServiceStatus(struct pipes_struct *p,
1018                                 struct svcctl_SetServiceStatus *r)
1019 {
1020         p->rng_fault_state = True;
1021         return WERR_NOT_SUPPORTED;
1022 }
1023
1024 WERROR _svcctl_NotifyBootConfigStatus(struct pipes_struct *p,
1025                                       struct svcctl_NotifyBootConfigStatus *r)
1026 {
1027         p->rng_fault_state = True;
1028         return WERR_NOT_SUPPORTED;
1029 }
1030
1031 WERROR _svcctl_SCSetServiceBitsW(struct pipes_struct *p,
1032                                  struct svcctl_SCSetServiceBitsW *r)
1033 {
1034         p->rng_fault_state = True;
1035         return WERR_NOT_SUPPORTED;
1036 }
1037
1038 WERROR _svcctl_ChangeServiceConfigW(struct pipes_struct *p,
1039                                     struct svcctl_ChangeServiceConfigW *r)
1040 {
1041         p->rng_fault_state = True;
1042         return WERR_NOT_SUPPORTED;
1043 }
1044
1045 WERROR _svcctl_CreateServiceW(struct pipes_struct *p,
1046                               struct svcctl_CreateServiceW *r)
1047 {
1048         p->rng_fault_state = True;
1049         return WERR_NOT_SUPPORTED;
1050 }
1051
1052 WERROR _svcctl_QueryServiceLockStatusW(struct pipes_struct *p,
1053                                        struct svcctl_QueryServiceLockStatusW *r)
1054 {
1055         p->rng_fault_state = True;
1056         return WERR_NOT_SUPPORTED;
1057 }
1058
1059 WERROR _svcctl_GetServiceKeyNameW(struct pipes_struct *p,
1060                                   struct svcctl_GetServiceKeyNameW *r)
1061 {
1062         p->rng_fault_state = True;
1063         return WERR_NOT_SUPPORTED;
1064 }
1065
1066 WERROR _svcctl_SCSetServiceBitsA(struct pipes_struct *p,
1067                                  struct svcctl_SCSetServiceBitsA *r)
1068 {
1069         p->rng_fault_state = True;
1070         return WERR_NOT_SUPPORTED;
1071 }
1072
1073 WERROR _svcctl_ChangeServiceConfigA(struct pipes_struct *p,
1074                                     struct svcctl_ChangeServiceConfigA *r)
1075 {
1076         p->rng_fault_state = True;
1077         return WERR_NOT_SUPPORTED;
1078 }
1079
1080 WERROR _svcctl_CreateServiceA(struct pipes_struct *p,
1081                               struct svcctl_CreateServiceA *r)
1082 {
1083         p->rng_fault_state = True;
1084         return WERR_NOT_SUPPORTED;
1085 }
1086
1087 WERROR _svcctl_EnumDependentServicesA(struct pipes_struct *p,
1088                                       struct svcctl_EnumDependentServicesA *r)
1089 {
1090         p->rng_fault_state = True;
1091         return WERR_NOT_SUPPORTED;
1092 }
1093
1094 WERROR _svcctl_EnumServicesStatusA(struct pipes_struct *p,
1095                                    struct svcctl_EnumServicesStatusA *r)
1096 {
1097         p->rng_fault_state = True;
1098         return WERR_NOT_SUPPORTED;
1099 }
1100
1101 WERROR _svcctl_OpenSCManagerA(struct pipes_struct *p,
1102                               struct svcctl_OpenSCManagerA *r)
1103 {
1104         p->rng_fault_state = True;
1105         return WERR_NOT_SUPPORTED;
1106 }
1107
1108 WERROR _svcctl_OpenServiceA(struct pipes_struct *p,
1109                             struct svcctl_OpenServiceA *r)
1110 {
1111         p->rng_fault_state = True;
1112         return WERR_NOT_SUPPORTED;
1113 }
1114
1115 WERROR _svcctl_QueryServiceConfigA(struct pipes_struct *p,
1116                                    struct svcctl_QueryServiceConfigA *r)
1117 {
1118         p->rng_fault_state = True;
1119         return WERR_NOT_SUPPORTED;
1120 }
1121
1122 WERROR _svcctl_QueryServiceLockStatusA(struct pipes_struct *p,
1123                                        struct svcctl_QueryServiceLockStatusA *r)
1124 {
1125         p->rng_fault_state = True;
1126         return WERR_NOT_SUPPORTED;
1127 }
1128
1129 WERROR _svcctl_StartServiceA(struct pipes_struct *p,
1130                              struct svcctl_StartServiceA *r)
1131 {
1132         p->rng_fault_state = True;
1133         return WERR_NOT_SUPPORTED;
1134 }
1135
1136 WERROR _svcctl_GetServiceDisplayNameA(struct pipes_struct *p,
1137                                       struct svcctl_GetServiceDisplayNameA *r)
1138 {
1139         p->rng_fault_state = True;
1140         return WERR_NOT_SUPPORTED;
1141 }
1142
1143 WERROR _svcctl_GetServiceKeyNameA(struct pipes_struct *p,
1144                                   struct svcctl_GetServiceKeyNameA *r)
1145 {
1146         p->rng_fault_state = True;
1147         return WERR_NOT_SUPPORTED;
1148 }
1149
1150 WERROR _svcctl_GetCurrentGroupeStateW(struct pipes_struct *p,
1151                                       struct svcctl_GetCurrentGroupeStateW *r)
1152 {
1153         p->rng_fault_state = True;
1154         return WERR_NOT_SUPPORTED;
1155 }
1156
1157 WERROR _svcctl_EnumServiceGroupW(struct pipes_struct *p,
1158                                  struct svcctl_EnumServiceGroupW *r)
1159 {
1160         p->rng_fault_state = True;
1161         return WERR_NOT_SUPPORTED;
1162 }
1163
1164 WERROR _svcctl_ChangeServiceConfig2A(struct pipes_struct *p,
1165                                      struct svcctl_ChangeServiceConfig2A *r)
1166 {
1167         p->rng_fault_state = True;
1168         return WERR_NOT_SUPPORTED;
1169 }
1170
1171 WERROR _svcctl_ChangeServiceConfig2W(struct pipes_struct *p,
1172                                      struct svcctl_ChangeServiceConfig2W *r)
1173 {
1174         p->rng_fault_state = True;
1175         return WERR_NOT_SUPPORTED;
1176 }
1177
1178 WERROR _svcctl_QueryServiceConfig2A(struct pipes_struct *p,
1179                                     struct svcctl_QueryServiceConfig2A *r)
1180 {
1181         p->rng_fault_state = True;
1182         return WERR_NOT_SUPPORTED;
1183 }
1184
1185 WERROR _EnumServicesStatusExA(struct pipes_struct *p,
1186                               struct EnumServicesStatusExA *r)
1187 {
1188         p->rng_fault_state = True;
1189         return WERR_NOT_SUPPORTED;
1190 }
1191
1192 WERROR _EnumServicesStatusExW(struct pipes_struct *p,
1193                               struct EnumServicesStatusExW *r)
1194 {
1195         p->rng_fault_state = True;
1196         return WERR_NOT_SUPPORTED;
1197 }
1198
1199 WERROR _svcctl_SCSendTSMessage(struct pipes_struct *p,
1200                                struct svcctl_SCSendTSMessage *r)
1201 {
1202         p->rng_fault_state = True;
1203         return WERR_NOT_SUPPORTED;
1204 }