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