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