source4/rpc_server/winreg/rpc_winreg.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    endpoint server for the winreg pipe
   5
   6    Copyright (C) Jelmer Vernooij 2004
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "rpc_server/dcerpc_server.h"
  24 #include "lib/registry/registry.h"
  25 #include "librpc/gen_ndr/ndr_winreg.h"
  26 #include "rpc_server/common/common.h"
  27 #include "librpc/gen_ndr/ndr_security.h"
  28
  29 enum handle_types { HTYPE_REGVAL, HTYPE_REGKEY };
  30
  31 static NTSTATUS dcerpc_winreg_bind(struct dcesrv_call_state *dce_call,
  32                                                                    const struct dcesrv_interface *iface)
  33 {
  34         struct registry_context *ctx;
  35         WERROR err;
  36
  37         err = reg_open_samba(dce_call->context,
  38                              &ctx, dce_call->conn->auth_state.session_info, NULL);
  39
  40         if (!W_ERROR_IS_OK(err)) {
  41                 DEBUG(0, ("Error opening registry: %s\n", win_errstr(err)));
  42                 return NT_STATUS_UNSUCCESSFUL;
  43         }
  44
  45         dce_call->context->private = ctx;
  46
  47         return NT_STATUS_OK;
  48 }
  49
  50 #define DCESRV_INTERFACE_WINREG_BIND dcerpc_winreg_bind
  51
  52 static WERROR dcesrv_winreg_openhive(struct dcesrv_call_state *dce_call,
  53                                                                          TALLOC_CTX *mem_ctx, uint32_t hkey,
  54                                                                          struct policy_handle **outh)
  55 {
  56         struct registry_context *ctx = dce_call->context->private;
  57         struct dcesrv_handle *h;
  58         WERROR error;
  59
  60         h = dcesrv_handle_new(dce_call->context, HTYPE_REGKEY);
  61
  62         error = reg_get_predefined_key(ctx, hkey, (struct registry_key **)&h->data);
  63         if (!W_ERROR_IS_OK(error)) {
  64                 return error;
  65         }
  66
  67         *outh = &h->wire_handle;
  68
  69         return error;
  70 }
  71
  72 #define func_winreg_OpenHive(k,n) static WERROR dcesrv_winreg_Open ## k (struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct winreg_Open ## k *r) \
  73 { \
  74         return dcesrv_winreg_openhive (dce_call, mem_ctx, n, &r->out.handle);\
  75 }
  76
  77 func_winreg_OpenHive(HKCR,HKEY_CLASSES_ROOT)
  78 func_winreg_OpenHive(HKCU,HKEY_CURRENT_USER)
  79 func_winreg_OpenHive(HKLM,HKEY_LOCAL_MACHINE)
  80 func_winreg_OpenHive(HKPD,HKEY_PERFORMANCE_DATA)
  81 func_winreg_OpenHive(HKU,HKEY_USERS)
  82 func_winreg_OpenHive(HKCC,HKEY_CURRENT_CONFIG)
  83 func_winreg_OpenHive(HKDD,HKEY_DYN_DATA)
  84 func_winreg_OpenHive(HKPT,HKEY_PERFORMANCE_TEXT)
  85 func_winreg_OpenHive(HKPN,HKEY_PERFORMANCE_NLSTEXT)
  86
  87 /*
  88   winreg_CloseKey
  89 */
  90 static WERROR dcesrv_winreg_CloseKey(struct dcesrv_call_state *dce_call,
  91                                                                          TALLOC_CTX *mem_ctx,
  92                                                                          struct winreg_CloseKey *r)
  93 {
  94         struct dcesrv_handle *h;
  95
  96         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
  97
  98         talloc_free(h);
  99
 100         ZERO_STRUCTP(r->out.handle);
 101
 102         return WERR_OK;
 103 }
 104
 105 /*
 106   winreg_CreateKey
 107 */
 108 static WERROR dcesrv_winreg_CreateKey(struct dcesrv_call_state *dce_call,
 109                                                                           TALLOC_CTX *mem_ctx,
 110                                                                           struct winreg_CreateKey *r)
 111 {
 112         struct dcesrv_handle *h, *newh;
 113         WERROR error;
 114         struct security_descriptor sd;
 115
 116         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 117
 118         newh = dcesrv_handle_new(dce_call->context, HTYPE_REGKEY);
 119
 120         /* the security descriptor is optional */
 121         if (r->in.secdesc != NULL) {
 122                 DATA_BLOB sdblob;
 123                 NTSTATUS status;
 124                 sdblob.data = r->in.secdesc->sd.data;
 125                 sdblob.length = r->in.secdesc->sd.len;
 126                 if (sdblob.data == NULL) {
 127                         return WERR_INVALID_PARAM;
 128                 }
 129                 status = ndr_pull_struct_blob_all(&sdblob, mem_ctx, &sd,
 130                                                   (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 131                 if (!NT_STATUS_IS_OK(status)) {
 132                         return WERR_INVALID_PARAM;
 133                 }
 134         }
 135
 136         error = reg_key_add_name(newh, (struct registry_key *)h->data,
 137                                                          r->in.name.name, NULL, r->in.secdesc?&sd:NULL,
 138                                                          (struct registry_key **)&newh->data);
 139         if (W_ERROR_IS_OK(error)) {
 140                 r->out.new_handle = &newh->wire_handle;
 141         } else {
 142                 talloc_free(newh);
 143         }
 144
 145         return error;
 146 }
 147
 148
 149 /*
 150   winreg_DeleteKey
 151 */
 152 static WERROR dcesrv_winreg_DeleteKey(struct dcesrv_call_state *dce_call,
 153                                                                           TALLOC_CTX *mem_ctx,
 154                                                                           struct winreg_DeleteKey *r)
 155 {
 156         struct dcesrv_handle *h;
 157
 158         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 159
 160         return reg_key_del((struct registry_key *)h->data, r->in.key.name);
 161 }
 162
 163
 164 /*
 165   winreg_DeleteValue
 166 */
 167 static WERROR dcesrv_winreg_DeleteValue(struct dcesrv_call_state *dce_call,
 168                                                                                 TALLOC_CTX *mem_ctx,
 169                                                                                 struct winreg_DeleteValue *r)
 170 {
 171         struct dcesrv_handle *h;
 172         struct registry_key *key;
 173
 174         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 175
 176         key = h->data;
 177
 178         return reg_del_value(key, r->in.value.name);
 179 }
 180
 181
 182 /*
 183   winreg_EnumKey
 184 */
 185 static WERROR dcesrv_winreg_EnumKey(struct dcesrv_call_state *dce_call,
 186                                                                         TALLOC_CTX *mem_ctx,
 187                                                                         struct winreg_EnumKey *r)
 188 {
 189         struct dcesrv_handle *h;
 190         const char *name;
 191         NTTIME last_mod;
 192
 193         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 194
 195         r->out.result = reg_key_get_subkey_by_index(mem_ctx,
 196                                                 (struct registry_key *)h->data, r->in.enum_index,
 197                                                 &name, NULL, &last_mod);
 198
 199         if (W_ERROR_IS_OK(r->out.result)) {
 200                 if (2*strlen_m_term(name) > r->in.name->size) {
 201                         return WERR_MORE_DATA;
 202                 }
 203                 r->out.name->length = 2*strlen_m_term(name);
 204                 r->out.name->name = name;
 205                 r->out.keyclass = talloc_zero(mem_ctx, struct winreg_StringBuf);
 206                 if (r->in.last_changed_time) {
 207                         r->out.last_changed_time = &last_mod;
 208                 }
 209         }
 210
 211         return r->out.result;
 212 }
 213
 214
 215 /*
 216   winreg_EnumValue
 217 */
 218 static WERROR dcesrv_winreg_EnumValue(struct dcesrv_call_state *dce_call,
 219                                                                           TALLOC_CTX *mem_ctx,
 220                                                                           struct winreg_EnumValue *r)
 221 {
 222         struct dcesrv_handle *h;
 223         struct registry_key *key;
 224         WERROR result;
 225         const char *data_name;
 226         uint32_t data_type;
 227         DATA_BLOB data;
 228
 229         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 230
 231         key = h->data;
 232
 233         result = reg_key_get_value_by_index(mem_ctx, key, r->in.enum_index,
 234                                                                                 &data_name,
 235                                                                                 &data_type, &data);
 236         if (!W_ERROR_IS_OK(result)) {
 237                 return result;
 238         }
 239
 240         /* the client can optionally pass a NULL for type, meaning they don't
 241            want that back */
 242         if (r->in.type != NULL) {
 243                 r->out.type = talloc(mem_ctx, enum winreg_Type);
 244                 *r->out.type = data_type;
 245         }
 246
 247         /* check the client has enough room for the value */
 248         if (r->in.value != NULL &&
 249             r->in.size != NULL &&
 250             data.length > *r->in.size) {
 251                 return WERR_MORE_DATA;
 252         }
 253
 254         /* and enough room for the name */
 255         if (r->in.name->size < 2*strlen_m_term(data_name)) {
 256                 return WERR_MORE_DATA;
 257         }
 258
 259         r->out.name->name = data_name;
 260         r->out.name->length = 2*strlen_m_term(data_name);
 261         r->out.name->size = 2*strlen_m_term(data_name);
 262
 263         if (r->in.value) {
 264                 r->out.value = data.data;
 265         }
 266
 267         if (r->in.size) {
 268                 r->out.size = talloc(mem_ctx, uint32_t);
 269                 *r->out.size = data.length;
 270                 r->out.length = r->out.size;
 271         }
 272
 273         return WERR_OK;
 274 }
 275
 276
 277 /*
 278   winreg_FlushKey
 279 */
 280 static WERROR dcesrv_winreg_FlushKey(struct dcesrv_call_state *dce_call,
 281                                                                          TALLOC_CTX *mem_ctx,
 282                                                                          struct winreg_FlushKey *r)
 283 {
 284         struct dcesrv_handle *h;
 285
 286         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 287
 288         return reg_key_flush(h->data);
 289 }
 290
 291
 292 /*
 293   winreg_GetKeySecurity
 294 */
 295 static WERROR dcesrv_winreg_GetKeySecurity(struct dcesrv_call_state *dce_call,
 296                                                                                    TALLOC_CTX *mem_ctx,
 297                                                                                    struct winreg_GetKeySecurity *r)
 298 {
 299         struct dcesrv_handle *h;
 300
 301         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 302
 303         return WERR_NOT_SUPPORTED;
 304 }
 305
 306
 307 /*
 308   winreg_LoadKey
 309 */
 310 static WERROR dcesrv_winreg_LoadKey(struct dcesrv_call_state *dce_call,
 311                                                                         TALLOC_CTX *mem_ctx,
 312                                                                         struct winreg_LoadKey *r)
 313 {
 314         return WERR_NOT_SUPPORTED;
 315 }
 316
 317
 318 /*
 319   winreg_NotifyChangeKeyValue
 320 */
 321 static WERROR dcesrv_winreg_NotifyChangeKeyValue(
 322                                         struct dcesrv_call_state *dce_call,
 323                                         TALLOC_CTX *mem_ctx, struct winreg_NotifyChangeKeyValue *r)
 324 {
 325         return WERR_NOT_SUPPORTED;
 326 }
 327
 328
 329 /*
 330   winreg_OpenKey
 331 */
 332 static WERROR dcesrv_winreg_OpenKey(struct dcesrv_call_state *dce_call,
 333                                                                         TALLOC_CTX *mem_ctx,
 334                                                                         struct winreg_OpenKey *r)
 335 {
 336         struct dcesrv_handle *h, *newh;
 337         WERROR result;
 338
 339         DCESRV_PULL_HANDLE_FAULT(h, r->in.parent_handle, HTYPE_REGKEY);
 340
 341         if (r->in.keyname.name && strcmp(r->in.keyname.name, "") == 0) {
 342                 newh = talloc_reference(dce_call->context, h);
 343                 result = WERR_OK;
 344         } else {
 345                 newh = dcesrv_handle_new(dce_call->context, HTYPE_REGKEY);
 346                 result = reg_open_key(newh, (struct registry_key *)h->data,
 347                                       r->in.keyname.name, (struct registry_key **)&newh->data);
 348         }
 349
 350         if (W_ERROR_IS_OK(result)) {
 351                 r->out.handle = &newh->wire_handle;
 352         } else {
 353                 talloc_free(newh);
 354         }
 355
 356         return result;
 357 }
 358
 359
 360 /*
 361   winreg_QueryInfoKey
 362 */
 363 static WERROR dcesrv_winreg_QueryInfoKey(struct dcesrv_call_state *dce_call,
 364                                                                                  TALLOC_CTX *mem_ctx,
 365                                                                                  struct winreg_QueryInfoKey *r)
 366 {
 367         struct dcesrv_handle *h;
 368         struct registry_key *k;
 369         WERROR ret;
 370         const char *classname = NULL;
 371
 372         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 373
 374         k = h->data;
 375
 376         ret = reg_key_get_info(mem_ctx, k, &classname, r->out.num_subkeys,
 377                                                    r->out.num_values, r->out.last_changed_time);
 378
 379         if (r->out.classname != NULL)
 380                 r->out.classname->name = classname;
 381
 382         return ret;
 383 }
 384
 385
 386 /*
 387   winreg_QueryValue
 388 */
 389 static WERROR dcesrv_winreg_QueryValue(struct dcesrv_call_state *dce_call,
 390                                                                            TALLOC_CTX *mem_ctx,
 391                                                                            struct winreg_QueryValue *r)
 392 {
 393         struct dcesrv_handle *h;
 394         struct registry_key *key;
 395         uint32_t value_type;
 396         DATA_BLOB value_data;
 397         WERROR result;
 398
 399         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 400
 401         key = h->data;
 402
 403         result = reg_key_get_value_by_name(mem_ctx, key, r->in.value_name.name,
 404                                                                            &value_type, &value_data);
 405
 406         if (!W_ERROR_IS_OK(result)) {
 407                 return result;
 408         }
 409
 410         /* Just asking for the size of the buffer */
 411         r->out.type = &value_type;
 412         r->out.length = talloc(mem_ctx, uint32_t);
 413         if (!r->out.length) {
 414                 return WERR_NOMEM;
 415         }
 416         *r->out.length = value_data.length;
 417         if (r->in.data == NULL) {
 418                 r->out.size = talloc(mem_ctx, uint32_t);
 419                 *r->out.size = value_data.length;
 420         } else {
 421                 r->out.size = r->in.size;
 422                 r->out.data = value_data.data;
 423         }
 424
 425         return WERR_OK;
 426 }
 427
 428
 429 /*
 430   winreg_ReplaceKey
 431 */
 432 static WERROR dcesrv_winreg_ReplaceKey(struct dcesrv_call_state *dce_call,
 433                                                                            TALLOC_CTX *mem_ctx,
 434                                                                            struct winreg_ReplaceKey *r)
 435 {
 436         return WERR_NOT_SUPPORTED;
 437 }
 438
 439
 440 /*
 441   winreg_RestoreKey
 442 */
 443 static WERROR dcesrv_winreg_RestoreKey(struct dcesrv_call_state *dce_call,
 444                                                                            TALLOC_CTX *mem_ctx,
 445                                                                            struct winreg_RestoreKey *r)
 446 {
 447         return WERR_NOT_SUPPORTED;
 448 }
 449
 450
 451 /*
 452   winreg_SaveKey
 453 */
 454 static WERROR dcesrv_winreg_SaveKey(struct dcesrv_call_state *dce_call,
 455                                                                         TALLOC_CTX *mem_ctx,
 456                                                                         struct winreg_SaveKey *r)
 457 {
 458         return WERR_NOT_SUPPORTED;
 459 }
 460
 461
 462 /*
 463   winreg_SetKeySecurity
 464 */
 465 static WERROR dcesrv_winreg_SetKeySecurity(struct dcesrv_call_state *dce_call,
 466                                                                                    TALLOC_CTX *mem_ctx,
 467                                                                                    struct winreg_SetKeySecurity *r)
 468 {
 469         return WERR_NOT_SUPPORTED;
 470 }
 471
 472
 473 /*
 474   winreg_SetValue
 475 */
 476 static WERROR dcesrv_winreg_SetValue(struct dcesrv_call_state *dce_call,
 477                                                                          TALLOC_CTX *mem_ctx,
 478                                                                          struct winreg_SetValue *r)
 479 {
 480         struct dcesrv_handle *h;
 481         struct registry_key *key;
 482         WERROR result;
 483         DATA_BLOB data;
 484
 485         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 486
 487         key = h->data;
 488
 489         data.data = r->in.data;
 490         data.length = r->in.size;
 491         result = reg_val_set(key, r->in.name.name, r->in.type, data);
 492
 493         return result;
 494 }
 495
 496
 497 /*
 498   winreg_UnLoadKey
 499 */
 500 static WERROR dcesrv_winreg_UnLoadKey(struct dcesrv_call_state *dce_call,
 501                                                                           TALLOC_CTX *mem_ctx,
 502                                                                           struct winreg_UnLoadKey *r)
 503 {
 504         return WERR_NOT_SUPPORTED;
 505 }
 506
 507
 508 /*
 509   winreg_InitiateSystemShutdown
 510 */
 511 static WERROR dcesrv_winreg_InitiateSystemShutdown(
 512                                                 struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
 513                                                 struct winreg_InitiateSystemShutdown *r)
 514 {
 515         return WERR_NOT_SUPPORTED;
 516 }
 517
 518
 519 /*
 520   winreg_AbortSystemShutdown
 521 */
 522 static WERROR dcesrv_winreg_AbortSystemShutdown(
 523                 struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
 524                 struct winreg_AbortSystemShutdown *r)
 525 {
 526         return WERR_NOT_SUPPORTED;
 527 }
 528
 529
 530 /*
 531   winreg_GetVersion
 532 */
 533 static WERROR dcesrv_winreg_GetVersion(struct dcesrv_call_state *dce_call,
 534                                                                            TALLOC_CTX *mem_ctx,
 535                                                                            struct winreg_GetVersion *r)
 536 {
 537         struct dcesrv_handle *h;
 538
 539         DCESRV_PULL_HANDLE_FAULT(h, r->in.handle, HTYPE_REGKEY);
 540
 541         r->out.version = talloc(mem_ctx, uint32_t);
 542         W_ERROR_HAVE_NO_MEMORY(r->out.version);
 543
 544         *r->out.version = 5;
 545
 546         return WERR_OK;
 547 }
 548
 549
 550 /*
 551   winreg_QueryMultipleValues
 552 */
 553 static WERROR dcesrv_winreg_QueryMultipleValues(
 554         struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
 555         struct winreg_QueryMultipleValues *r)
 556 {
 557         return WERR_NOT_SUPPORTED;
 558 }
 559
 560
 561 /*
 562   winreg_InitiateSystemShutdownEx
 563 */
 564 static WERROR dcesrv_winreg_InitiateSystemShutdownEx(
 565                 struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
 566                 struct winreg_InitiateSystemShutdownEx *r)
 567 {
 568         return WERR_NOT_SUPPORTED;
 569 }
 570
 571
 572 /*
 573   winreg_SaveKeyEx
 574 */
 575 static WERROR dcesrv_winreg_SaveKeyEx(struct dcesrv_call_state *dce_call,
 576                                                                           TALLOC_CTX *mem_ctx,
 577                                                                           struct winreg_SaveKeyEx *r)
 578 {
 579         return WERR_NOT_SUPPORTED;
 580 }
 581
 582
 583 /*
 584   winreg_QueryMultipleValues2
 585 */
 586 static WERROR dcesrv_winreg_QueryMultipleValues2(
 587                 struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
 588                 struct winreg_QueryMultipleValues2 *r)
 589 {
 590         return WERR_NOT_SUPPORTED;
 591 }
 592
 593
 594 /* include the generated boilerplate */
 595 #include "librpc/gen_ndr/ndr_winreg_s.c"