source4/lib/registry/registry.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Registry interface
   4    Copyright (C) Gerald Carter                        2002.
   5    Copyright (C) Jelmer Vernooij                        2003-2007.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef _REGISTRY_H /* _REGISTRY_H */
  22 #define _REGISTRY_H
  23
  24 struct registry_context;
  25 struct loadparm_context;
  26
  27 #include <talloc.h>
  28 #include "libcli/util/werror.h"
  29 #include "librpc/gen_ndr/security.h"
  30 #include "libcli/util/ntstatus.h"
  31 #include "../lib/util/time.h"
  32 #include "../lib/util/data_blob.h"
  33
  34 /**
  35  * The hive API. This API is generally used for
  36  * reading a specific file that contains just one hive.
  37  *
  38  * Good examples are .DAT (NTUSER.DAT) files.
  39  *
  40  * This API does not have any notification support (that
  41  * should be provided by the registry implementation), nor
  42  * does it understand what predefined keys are.
  43  */
  44
  45 struct hive_key {
  46         const struct hive_operations *ops;
  47 };
  48
  49 struct hive_operations {
  50         const char *name;
  51
  52         /**
  53          * Open a specific subkey
  54          */
  55         WERROR (*enum_key) (TALLOC_CTX *mem_ctx,
  56                             const struct hive_key *key, uint32_t idx,
  57                             const char **name,
  58                             const char **classname,
  59                             NTTIME *last_mod_time);
  60
  61         /**
  62          * Open a subkey by name
  63          */
  64         WERROR (*get_key_by_name) (TALLOC_CTX *mem_ctx,
  65                                    const struct hive_key *key, const char *name,
  66                                    struct hive_key **subkey);
  67
  68         /**
  69          * Add a new key.
  70          */
  71         WERROR (*add_key) (TALLOC_CTX *ctx,
  72                            const struct hive_key *parent_key, const char *path,
  73                            const char *classname,
  74                            struct security_descriptor *desc,
  75                            struct hive_key **key);
  76         /**
  77          * Remove an existing key.
  78          */
  79         WERROR (*del_key) (TALLOC_CTX *mem_ctx,
  80                            const struct hive_key *key, const char *name);
  81
  82         /**
  83          * Force write of a key to disk.
  84          */
  85         WERROR (*flush_key) (struct hive_key *key);
  86
  87         /**
  88          * Retrieve a registry value with a specific index.
  89          */
  90         WERROR (*enum_value) (TALLOC_CTX *mem_ctx,
  91                               struct hive_key *key, uint32_t idx,
  92                               const char **name, uint32_t *type,
  93                               DATA_BLOB *data);
  94
  95         /**
  96          * Retrieve a registry value with the specified name
  97          */
  98         WERROR (*get_value_by_name) (TALLOC_CTX *mem_ctx,
  99                                      struct hive_key *key, const char *name,
 100                                      uint32_t *type, DATA_BLOB *data);
 101
 102         /**
 103          * Set a value on the specified registry key.
 104          */
 105         WERROR (*set_value) (struct hive_key *key, const char *name,
 106                              uint32_t type, const DATA_BLOB data);
 107
 108         /**
 109          * Remove a value.
 110          */
 111         WERROR (*delete_value) (TALLOC_CTX *mem_ctx,
 112                                 struct hive_key *key, const char *name);
 113
 114         /* Security Descriptors */
 115
 116         /**
 117          * Change the security descriptor on a registry key.
 118          *
 119          * This should return WERR_NOT_SUPPORTED if the underlying
 120          * format does not have a mechanism for storing
 121          * security descriptors.
 122          */
 123         WERROR (*set_sec_desc) (struct hive_key *key,
 124                                 const struct security_descriptor *desc);
 125
 126         /**
 127          * Retrieve the security descriptor on a registry key.
 128          *
 129          * This should return WERR_NOT_SUPPORTED if the underlying
 130          * format does not have a mechanism for storing
 131          * security descriptors.
 132          */
 133         WERROR (*get_sec_desc) (TALLOC_CTX *ctx,
 134                                 const struct hive_key *key,
 135                                 struct security_descriptor **desc);
 136
 137         /**
 138          * Retrieve general information about a key.
 139          */
 140         WERROR (*get_key_info) (TALLOC_CTX *mem_ctx,
 141                                 const struct hive_key *key,
 142                                 const char **classname,
 143                                 uint32_t *num_subkeys,
 144                                 uint32_t *num_values,
 145                                 NTTIME *last_change_time,
 146                                 uint32_t *max_subkeynamelen,
 147                                 uint32_t *max_valnamelen,
 148                                 uint32_t *max_valbufsize);
 149 };
 150
 151 struct cli_credentials;
 152 struct auth_session_info;
 153 struct tevent_context;
 154
 155 WERROR reg_open_hive(TALLOC_CTX *parent_ctx, const char *location,
 156                      struct auth_session_info *session_info,
 157                      struct cli_credentials *credentials,
 158                      struct tevent_context *ev_ctx,
 159                      struct loadparm_context *lp_ctx,
 160                      struct hive_key **root);
 161 WERROR hive_key_get_info(TALLOC_CTX *mem_ctx, const struct hive_key *key,
 162                          const char **classname, uint32_t *num_subkeys,
 163                          uint32_t *num_values, NTTIME *last_change_time,
 164                          uint32_t *max_subkeynamelen,
 165                          uint32_t *max_valnamelen, uint32_t *max_valbufsize);
 166 WERROR hive_key_add_name(TALLOC_CTX *ctx, const struct hive_key *parent_key,
 167                          const char *name, const char *classname,
 168                          struct security_descriptor *desc,
 169                          struct hive_key **key);
 170 WERROR hive_key_del(TALLOC_CTX *mem_ctx,
 171                     const struct hive_key *key, const char *name);
 172 WERROR hive_get_key_by_name(TALLOC_CTX *mem_ctx,
 173                             const struct hive_key *key, const char *name,
 174                             struct hive_key **subkey);
 175 WERROR hive_enum_key(TALLOC_CTX *mem_ctx,
 176                      const struct hive_key *key, uint32_t idx,
 177                      const char **name,
 178                      const char **classname,
 179                      NTTIME *last_mod_time);
 180
 181 WERROR hive_key_set_value(struct hive_key *key, const char *name,
 182                       uint32_t type, const DATA_BLOB data);
 183
 184 WERROR hive_get_value(TALLOC_CTX *mem_ctx,
 185                       struct hive_key *key, const char *name,
 186                       uint32_t *type, DATA_BLOB *data);
 187 WERROR hive_get_value_by_index(TALLOC_CTX *mem_ctx,
 188                                struct hive_key *key, uint32_t idx,
 189                                const char **name,
 190                                uint32_t *type, DATA_BLOB *data);
 191 WERROR hive_get_sec_desc(TALLOC_CTX *mem_ctx,
 192                          struct hive_key *key,
 193                          struct security_descriptor **security);
 194
 195 WERROR hive_set_sec_desc(struct hive_key *key,
 196                          const struct security_descriptor *security);
 197
 198 WERROR hive_key_del_value(TALLOC_CTX *mem_ctx,
 199                           struct hive_key *key, const char *name);
 200
 201 WERROR hive_key_flush(struct hive_key *key);
 202
 203
 204 /* Individual backends */
 205 WERROR reg_open_directory(TALLOC_CTX *parent_ctx,
 206                           const char *location, struct hive_key **key);
 207 WERROR reg_open_regf_file(TALLOC_CTX *parent_ctx,
 208                           const char *location, struct hive_key **key);
 209 WERROR reg_open_ldb_file(TALLOC_CTX *parent_ctx, const char *location,
 210                          struct auth_session_info *session_info,
 211                          struct cli_credentials *credentials,
 212                          struct tevent_context *ev_ctx,
 213                          struct loadparm_context *lp_ctx,
 214                          struct hive_key **k);
 215
 216
 217 WERROR reg_create_directory(TALLOC_CTX *parent_ctx,
 218                             const char *location, struct hive_key **key);
 219 WERROR reg_create_regf_file(TALLOC_CTX *parent_ctx,
 220                             const char *location,
 221                             int major_version,
 222                             struct hive_key **key);
 223
 224
 225
 226 /* Handles for the predefined keys */
 227 #define HKEY_CLASSES_ROOT               0x80000000
 228 #define HKEY_CURRENT_USER               0x80000001
 229 #define HKEY_LOCAL_MACHINE              0x80000002
 230 #define HKEY_USERS                      0x80000003
 231 #define HKEY_PERFORMANCE_DATA           0x80000004
 232 #define HKEY_CURRENT_CONFIG             0x80000005
 233 #define HKEY_DYN_DATA                   0x80000006
 234 #define HKEY_PERFORMANCE_TEXT           0x80000050
 235 #define HKEY_PERFORMANCE_NLSTEXT        0x80000060
 236
 237 #define HKEY_FIRST              HKEY_CLASSES_ROOT
 238 #define HKEY_LAST               HKEY_PERFORMANCE_NLSTEXT
 239
 240 struct reg_predefined_key {
 241         uint32_t handle;
 242         const char *name;
 243 };
 244
 245 extern const struct reg_predefined_key reg_predefined_keys[];
 246
 247 #define REG_DELETE              -1
 248
 249 /*
 250  * The general idea here is that every backend provides a 'hive'. Combining
 251  * various hives gives you a complete registry like windows has
 252  */
 253
 254 #define REGISTRY_INTERFACE_VERSION 1
 255
 256 struct reg_key_operations;
 257
 258 /* structure to store the registry handles */
 259 struct registry_key
 260 {
 261         struct registry_context *context;
 262 };
 263
 264 struct registry_value
 265 {
 266         const char *name;
 267         unsigned int data_type;
 268         DATA_BLOB data;
 269 };
 270
 271 /* FIXME */
 272 typedef void (*reg_key_notification_function) (void);
 273 typedef void (*reg_value_notification_function) (void);
 274
 275 struct cli_credentials;
 276
 277 struct registry_operations {
 278         const char *name;
 279
 280         WERROR (*get_key_info) (TALLOC_CTX *mem_ctx,
 281                                 const struct registry_key *key,
 282                                 const char **classname,
 283                                 uint32_t *numsubkeys,
 284                                 uint32_t *numvalues,
 285                                 NTTIME *last_change_time,
 286                                 uint32_t *max_subkeynamelen,
 287                                 uint32_t *max_valnamelen,
 288                                 uint32_t *max_valbufsize);
 289
 290         WERROR (*flush_key) (struct registry_key *key);
 291
 292         WERROR (*get_predefined_key) (struct registry_context *ctx,
 293                                       uint32_t key_id,
 294                                       struct registry_key **key);
 295
 296         WERROR (*open_key) (TALLOC_CTX *mem_ctx,
 297                             struct registry_key *parent,
 298                             const char *path,
 299                             struct registry_key **key);
 300
 301         WERROR (*create_key) (TALLOC_CTX *mem_ctx,
 302                               struct registry_key *parent,
 303                               const char *name,
 304                               const char *key_class,
 305                               struct security_descriptor *security,
 306                               struct registry_key **key);
 307
 308         WERROR (*delete_key) (TALLOC_CTX *mem_ctx,
 309                               struct registry_key *key, const char *name);
 310
 311         WERROR (*delete_value) (TALLOC_CTX *mem_ctx,
 312                                 struct registry_key *key, const char *name);
 313
 314         WERROR (*enum_key) (TALLOC_CTX *mem_ctx,
 315                             const struct registry_key *key, uint32_t idx,
 316                             const char **name,
 317                             const char **keyclass,
 318                             NTTIME *last_changed_time);
 319
 320         WERROR (*enum_value) (TALLOC_CTX *mem_ctx,
 321                               const struct registry_key *key, uint32_t idx,
 322                               const char **name,
 323                               uint32_t *type,
 324                               DATA_BLOB *data);
 325
 326         WERROR (*get_sec_desc) (TALLOC_CTX *mem_ctx,
 327                                 const struct registry_key *key,
 328                                 struct security_descriptor **security);
 329
 330         WERROR (*set_sec_desc) (struct registry_key *key,
 331                                 const struct security_descriptor *security);
 332
 333         WERROR (*load_key) (struct registry_key *key,
 334                             const char *key_name,
 335                             const char *path);
 336
 337         WERROR (*unload_key) (struct registry_key *key, const char *name);
 338
 339         WERROR (*notify_value_change) (struct registry_key *key,
 340                                        reg_value_notification_function fn);
 341
 342         WERROR (*get_value) (TALLOC_CTX *mem_ctx,
 343                              const struct registry_key *key,
 344                              const char *name,
 345                              uint32_t *type,
 346                              DATA_BLOB *data);
 347
 348         WERROR (*set_value) (struct registry_key *key,
 349                              const char *name,
 350                              uint32_t type,
 351                              const DATA_BLOB data);
 352 };
 353
 354 /**
 355  * Handle to a full registry
 356  * contains zero or more hives
 357  */
 358 struct registry_context {
 359         const struct registry_operations *ops;
 360 };
 361
 362 struct auth_session_info;
 363 struct tevent_context;
 364 struct loadparm_context;
 365
 366 /**
 367  * Open the locally defined registry.
 368  */
 369 WERROR reg_open_local(TALLOC_CTX *mem_ctx,
 370                       struct registry_context **ctx);
 371
 372 WERROR reg_open_samba(TALLOC_CTX *mem_ctx,
 373                       struct registry_context **ctx,
 374                       struct tevent_context *ev_ctx,
 375                       struct loadparm_context *lp_ctx,
 376                       struct auth_session_info *session_info,
 377                       struct cli_credentials *credentials);
 378
 379 /**
 380  * Open the registry on a remote machine.
 381  */
 382 WERROR reg_open_remote(TALLOC_CTX *mem_ctx,
 383                        struct registry_context **ctx,
 384                        struct auth_session_info *session_info,
 385                        struct cli_credentials *credentials,
 386                        struct loadparm_context *lp_ctx,
 387                        const char *location, struct tevent_context *ev);
 388
 389 WERROR reg_open_wine(struct registry_context **ctx, const char *path);
 390
 391 const char *reg_get_predef_name(uint32_t hkey);
 392 WERROR reg_get_predefined_key_by_name(struct registry_context *ctx,
 393                                       const char *name,
 394                                       struct registry_key **key);
 395 WERROR reg_get_predefined_key(struct registry_context *ctx,
 396                               uint32_t hkey,
 397                               struct registry_key **key);
 398
 399 WERROR reg_open_key(TALLOC_CTX *mem_ctx, struct registry_key *parent,
 400                     const char *name, struct registry_key **result);
 401
 402 WERROR reg_key_get_value_by_index(TALLOC_CTX *mem_ctx,
 403                                   const struct registry_key *key, uint32_t idx,
 404                                   const char **name,
 405                                   uint32_t *type,
 406                                   DATA_BLOB *data);
 407 WERROR reg_key_get_info(TALLOC_CTX *mem_ctx,
 408                         const struct registry_key *key,
 409                         const char **class_name,
 410                         uint32_t *num_subkeys,
 411                         uint32_t *num_values,
 412                         NTTIME *last_change_time,
 413                         uint32_t *max_subkeynamelen,
 414                         uint32_t *max_valnamelen,
 415                         uint32_t *max_valbufsize);
 416 WERROR reg_key_get_subkey_by_index(TALLOC_CTX *mem_ctx,
 417                                    const struct registry_key *key,
 418                                    uint32_t idx,
 419                                    const char **name,
 420                                    const char **classname,
 421                                    NTTIME *last_mod_time);
 422 WERROR reg_key_get_subkey_by_name(TALLOC_CTX *mem_ctx,
 423                                   const struct registry_key *key,
 424                                   const char *name,
 425                                   struct registry_key **subkey);
 426 WERROR reg_key_get_value_by_name(TALLOC_CTX *mem_ctx,
 427                                  const struct registry_key *key,
 428                                  const char *name,
 429                                  uint32_t *type,
 430                                  DATA_BLOB *data);
 431 WERROR reg_key_del(TALLOC_CTX *mem_ctx,
 432                    struct registry_key *parent, const char *name);
 433 WERROR reg_key_add_name(TALLOC_CTX *mem_ctx,
 434                         struct registry_key *parent, const char *name,
 435                         const char *classname,
 436                         struct security_descriptor *desc,
 437                         struct registry_key **newkey);
 438 WERROR reg_val_set(struct registry_key *key, const char *value,
 439                    uint32_t type, DATA_BLOB data);
 440 WERROR reg_get_sec_desc(TALLOC_CTX *ctx, const struct registry_key *key,
 441                         struct security_descriptor **secdesc);
 442 WERROR reg_del_value(TALLOC_CTX *mem_ctx,
 443                      struct registry_key *key, const char *valname);
 444 WERROR reg_key_flush(struct registry_key *key);
 445 WERROR reg_create_key(TALLOC_CTX *mem_ctx,
 446                       struct registry_key *parent,
 447                       const char *name,
 448                       const char *key_class,
 449                       struct security_descriptor *security,
 450                       struct registry_key **key);
 451
 452 /* Utility functions */
 453 const char *str_regtype(int type);
 454 bool push_reg_sz(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, const char *s);
 455 bool push_reg_multi_sz(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, const char **a);
 456 bool pull_reg_sz(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, const char **s);
 457 bool pull_reg_multi_sz(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, const char ***a);
 458 int regtype_by_string(const char *str);
 459 char *reg_val_data_string(TALLOC_CTX *mem_ctx, uint32_t type, const DATA_BLOB data);
 460 char *reg_val_description(TALLOC_CTX *mem_ctx, const char *name,
 461                           uint32_t type, const DATA_BLOB data);
 462 bool reg_string_to_val(TALLOC_CTX *mem_ctx, const char *type_str,
 463                        const char *data_str, uint32_t *type, DATA_BLOB *data);
 464 WERROR reg_open_key_abs(TALLOC_CTX *mem_ctx, struct registry_context *handle,
 465                         const char *name, struct registry_key **result);
 466 WERROR reg_key_del_abs(struct registry_context *ctx, const char *path);
 467 WERROR reg_key_add_abs(TALLOC_CTX *mem_ctx, struct registry_context *ctx,
 468                        const char *path, uint32_t access_mask,
 469                        struct security_descriptor *sec_desc,
 470                        struct registry_key **result);
 471 WERROR reg_load_key(struct registry_context *ctx, struct registry_key *key,
 472                     const char *name, const char *filename);
 473
 474 WERROR reg_mount_hive(struct registry_context *rctx,
 475                       struct hive_key *hive_key,
 476                       uint32_t key_id,
 477                       const char **elements);
 478
 479 struct registry_key *reg_import_hive_key(struct registry_context *ctx,
 480                                          struct hive_key *hive,
 481                                          uint32_t predef_key,
 482                                          const char **elements);
 483 WERROR reg_set_sec_desc(struct registry_key *key,
 484                         const struct security_descriptor *security);
 485
 486 struct reg_diff_callbacks {
 487         WERROR (*add_key) (void *callback_data, const char *key_name);
 488         WERROR (*set_value) (void *callback_data, const char *key_name,
 489                              const char *value_name, uint32_t value_type,
 490                              DATA_BLOB value);
 491         WERROR (*del_value) (void *callback_data, const char *key_name,
 492                              const char *value_name);
 493         WERROR (*del_key) (void *callback_data, const char *key_name);
 494         WERROR (*del_all_values) (void *callback_data, const char *key_name);
 495         WERROR (*done) (void *callback_data);
 496 };
 497
 498 WERROR reg_diff_apply(struct registry_context *ctx,
 499                                           const char *filename);
 500
 501 WERROR reg_generate_diff(struct registry_context *ctx1,
 502                          struct registry_context *ctx2,
 503                          const struct reg_diff_callbacks *callbacks,
 504                          void *callback_data);
 505 WERROR reg_dotreg_diff_save(TALLOC_CTX *ctx, const char *filename,
 506                             struct reg_diff_callbacks **callbacks,
 507                             void **callback_data);
 508 WERROR reg_preg_diff_save(TALLOC_CTX *ctx, const char *filename,
 509                           struct reg_diff_callbacks **callbacks,
 510                           void **callback_data);
 511 WERROR reg_generate_diff_key(struct registry_key *oldkey,
 512                              struct registry_key *newkey,
 513                              const char *path,
 514                              const struct reg_diff_callbacks *callbacks,
 515                              void *callback_data);
 516 WERROR reg_diff_load(const char *filename,
 517                      const struct reg_diff_callbacks *callbacks,
 518                      void *callback_data);
 519
 520 WERROR reg_dotreg_diff_load(int fd,
 521                                      const struct reg_diff_callbacks *callbacks,
 522                                      void *callback_data);
 523
 524 WERROR reg_preg_diff_load(int fd,
 525                                    const struct reg_diff_callbacks *callbacks,
 526                                    void *callback_data);
 527
 528 WERROR local_get_predefined_key(struct registry_context *ctx,
 529                                 uint32_t key_id, struct registry_key **key);
 530
 531
 532 #endif /* _REGISTRY_H */