source4/lib/registry/tools/regshell.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    simple registry frontend
   4
   5    Copyright (C) Jelmer Vernooij 2004-2007
   6    Copyright (C) Wilco Baan Hofman 2009
   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 "lib/registry/registry.h"
  24 #include "lib/cmdline/popt_common.h"
  25 #include "lib/events/events.h"
  26 #include "system/time.h"
  27 #include "../libcli/smbreadline/smbreadline.h"
  28 #include "librpc/gen_ndr/ndr_security.h"
  29 #include "lib/registry/tools/common.h"
  30 #include "param/param.h"
  31
  32 struct regshell_context {
  33         struct registry_context *registry;
  34         char *path;
  35         char *predef;
  36         struct registry_key *current;
  37         struct registry_key *root;
  38 };
  39
  40 static WERROR get_full_path(struct regshell_context *ctx, char *path, char **ret_path)
  41 {
  42         char *dir;
  43         char *tmp;
  44         char *new_path;
  45
  46         if (path[0] == '\\') {
  47                 new_path = talloc_strdup(ctx, "");
  48         } else {
  49                 new_path = talloc_strdup(ctx, ctx->path);
  50         }
  51
  52         dir = strtok(path, "\\");
  53         if (dir == NULL) {
  54                 *ret_path = new_path;
  55                 return WERR_OK;
  56         }
  57         do {
  58                 if (strcmp(dir, "..") == 0) {
  59                         if (strchr(new_path, '\\')) {
  60                                 new_path[strrchr(new_path, '\\') - new_path] = '\0';
  61                         } else {
  62                                 tmp = new_path;
  63                                 new_path = talloc_strdup(ctx, "");
  64                                 talloc_free(tmp);
  65                         }
  66                         continue;
  67                 }
  68                 if (strcmp(dir, ".") == 0) {
  69                         continue;
  70                 }
  71
  72                 tmp = new_path;
  73                 /* No prepending a backslash */
  74                 if (strcmp(new_path, "") == 0) {
  75                         new_path = talloc_strdup(ctx, dir);
  76                 } else {
  77                         new_path = talloc_asprintf(ctx, "%s\\%s", new_path, dir);
  78                 }
  79                 talloc_free(tmp);
  80
  81         } while ((dir = strtok(NULL, "\\")));
  82
  83         *ret_path = new_path;
  84         return WERR_OK;
  85 }
  86
  87 /* *
  88  * ck/cd - change key
  89  * ls - list values/keys
  90  * rmval/rm - remove value
  91  * rmkey/rmdir - remove key
  92  * mkkey/mkdir - make key
  93  * ch - change hive
  94  * info - show key info
  95  * save - save hive
  96  * print - print value
  97  * help
  98  * exit
  99  */
 100
 101 static WERROR cmd_info(struct regshell_context *ctx, int argc, char **argv)
 102 {
 103         struct security_descriptor *sec_desc = NULL;
 104         time_t last_mod;
 105         WERROR error;
 106         const char *classname = NULL;
 107         NTTIME last_change;
 108         uint32_t max_subkeynamelen;
 109         uint32_t max_valnamelen;
 110         uint32_t max_valbufsize;
 111         uint32_t num_subkeys;
 112         uint32_t num_values;
 113
 114         error = reg_key_get_info(ctx, ctx->current, &classname, &num_subkeys, &num_values,
 115                                  &last_change, &max_subkeynamelen, &max_valnamelen, &max_valbufsize);
 116         if (!W_ERROR_IS_OK(error)) {
 117                 printf("Error getting key info: %s\n", win_errstr(error));
 118                 return error;
 119         }
 120
 121
 122         printf("Name: %s\n", strchr(ctx->path, '\\')?strrchr(ctx->path, '\\')+1:
 123                    ctx->path);
 124         printf("Full path: %s\n", ctx->path);
 125         if (classname != NULL)
 126                 printf("Key Class: %s\n", classname);
 127         last_mod = nt_time_to_unix(last_change);
 128         printf("Time Last Modified: %s", ctime(&last_mod));
 129         printf("Number of subkeys: %d\n", num_subkeys);
 130         printf("Number of values: %d\n", num_values);
 131
 132         if (max_valnamelen > 0)
 133                 printf("Maximum value name length: %d\n", max_valnamelen);
 134
 135         if (max_valbufsize > 0)
 136                 printf("Maximum value data length: %d\n", max_valbufsize);
 137
 138         if (max_subkeynamelen > 0)
 139                 printf("Maximum sub key name length: %d\n", max_subkeynamelen);
 140
 141         error = reg_get_sec_desc(ctx, ctx->current, &sec_desc);
 142         if (!W_ERROR_IS_OK(error)) {
 143                 printf("Error getting security descriptor: %s\n", win_errstr(error));
 144                 return WERR_OK;
 145         }
 146         ndr_print_debug((ndr_print_fn_t)ndr_print_security_descriptor,
 147                         "Security", sec_desc);
 148         talloc_free(sec_desc);
 149
 150         return WERR_OK;
 151 }
 152
 153 static WERROR cmd_predef(struct regshell_context *ctx, int argc, char **argv)
 154 {
 155         struct registry_key *ret = NULL;
 156         if (argc < 2) {
 157                 fprintf(stderr, "Usage: predef predefined-key-name\n");
 158         } else if (!ctx) {
 159                 fprintf(stderr, "No full registry loaded, no predefined keys defined\n");
 160         } else {
 161                 WERROR error = reg_get_predefined_key_by_name(ctx->registry,
 162                                                               argv[1], &ret);
 163
 164                 if (!W_ERROR_IS_OK(error)) {
 165                         fprintf(stderr, "Error opening predefined key %s: %s\n",
 166                                 argv[1], win_errstr(error));
 167                         return error;
 168                 }
 169
 170                 ctx->predef = strupper_talloc(ctx, argv[1]);
 171                 ctx->current = ret;
 172                 ctx->root = ret;
 173         }
 174
 175         return WERR_OK;
 176 }
 177
 178 static WERROR cmd_pwd(struct regshell_context *ctx,
 179                       int argc, char **argv)
 180 {
 181         if (ctx->predef) {
 182                 printf("%s\\", ctx->predef);
 183         }
 184         printf("%s\n", ctx->path);
 185         return WERR_OK;
 186 }
 187
 188 static WERROR cmd_set(struct regshell_context *ctx, int argc, char **argv)
 189 {
 190         struct registry_value val;
 191         WERROR error;
 192
 193         if (argc < 4) {
 194                 fprintf(stderr, "Usage: set value-name type value\n");
 195                 return WERR_INVALID_PARAM;
 196         }
 197
 198         if (!reg_string_to_val(ctx, argv[2], argv[3], &val.data_type, &val.data)) {
 199                 fprintf(stderr, "Unable to interpret data\n");
 200                 return WERR_INVALID_PARAM;
 201         }
 202
 203         error = reg_val_set(ctx->current, argv[1], val.data_type, val.data);
 204         if (!W_ERROR_IS_OK(error)) {
 205                 fprintf(stderr, "Error setting value: %s\n", win_errstr(error));
 206                 return error;
 207         }
 208
 209         return WERR_OK;
 210 }
 211
 212 static WERROR cmd_ck(struct regshell_context *ctx, int argc, char **argv)
 213 {
 214         struct registry_key *nkey = NULL;
 215         char *full_path;
 216         WERROR error;
 217
 218         if(argc == 2) {
 219                 if (!W_ERROR_IS_OK(get_full_path(ctx, argv[1], &full_path))) {
 220                         fprintf(stderr, "Unable to parse the supplied path\n");
 221                         return WERR_INVALID_PARAM;
 222                 }
 223                 error = reg_open_key(ctx->registry, ctx->root, full_path,
 224                                      &nkey);
 225                 if(!W_ERROR_IS_OK(error)) {
 226                         DEBUG(0, ("Error opening specified key: %s\n",
 227                                 win_errstr(error)));
 228                         return error;
 229                 }
 230
 231                 talloc_free(ctx->path);
 232                 ctx->path = full_path;
 233
 234                 ctx->current = nkey;
 235         }
 236         printf("New path is: %s\\%s\n", ctx->predef?ctx->predef:"", ctx->path);
 237
 238         return WERR_OK;
 239 }
 240
 241 static WERROR cmd_print(struct regshell_context *ctx, int argc, char **argv)
 242 {
 243         uint32_t value_type;
 244         DATA_BLOB value_data;
 245         WERROR error;
 246
 247         if (argc != 2) {
 248                 fprintf(stderr, "Usage: print <valuename>\n");
 249                 return WERR_INVALID_PARAM;
 250         }
 251
 252         error = reg_key_get_value_by_name(ctx, ctx->current, argv[1],
 253                                           &value_type, &value_data);
 254         if (!W_ERROR_IS_OK(error)) {
 255                 fprintf(stderr, "No such value '%s'\n", argv[1]);
 256                 return error;
 257         }
 258
 259         printf("%s\n%s\n", str_regtype(value_type),
 260                    reg_val_data_string(ctx, value_type, value_data));
 261
 262         return WERR_OK;
 263 }
 264
 265 static WERROR cmd_ls(struct regshell_context *ctx, int argc, char **argv)
 266 {
 267         unsigned int i;
 268         WERROR error;
 269         uint32_t valuetype;
 270         DATA_BLOB valuedata;
 271         const char *name = NULL;
 272
 273         for (i = 0; W_ERROR_IS_OK(error = reg_key_get_subkey_by_index(ctx,
 274                                                                       ctx->current,
 275                                                                       i,
 276                                                                       &name,
 277                                                                       NULL,
 278                                                                       NULL)); i++) {
 279                 printf("K %s\n", name);
 280         }
 281
 282         if (!W_ERROR_EQUAL(error, WERR_NO_MORE_ITEMS)) {
 283                 fprintf(stderr, "Error occurred while browsing through keys: %s\n",
 284                         win_errstr(error));
 285                 return error;
 286         }
 287
 288         for (i = 0; W_ERROR_IS_OK(error = reg_key_get_value_by_index(ctx,
 289                 ctx->current, i, &name, &valuetype, &valuedata)); i++)
 290                 printf("V \"%s\" %s %s\n", name, str_regtype(valuetype),
 291                            reg_val_data_string(ctx, valuetype, valuedata));
 292
 293         return WERR_OK;
 294 }
 295 static WERROR cmd_mkkey(struct regshell_context *ctx, int argc, char **argv)
 296 {
 297         struct registry_key *tmp;
 298         WERROR error;
 299
 300         if(argc < 2) {
 301                 fprintf(stderr, "Usage: mkkey <keyname>\n");
 302                 return WERR_INVALID_PARAM;
 303         }
 304
 305         error = reg_key_add_name(ctx, ctx->current, argv[1], 0, NULL, &tmp);
 306
 307         if (!W_ERROR_IS_OK(error)) {
 308                 fprintf(stderr, "Error adding new subkey '%s': %s\n", argv[1],
 309                         win_errstr(error));
 310                 return error;
 311         }
 312
 313         return WERR_OK;
 314 }
 315
 316 static WERROR cmd_rmkey(struct regshell_context *ctx,
 317                         int argc, char **argv)
 318 {
 319         WERROR error;
 320
 321         if(argc < 2) {
 322                 fprintf(stderr, "Usage: rmkey <name>\n");
 323                 return WERR_INVALID_PARAM;
 324         }
 325
 326         error = reg_key_del(ctx, ctx->current, argv[1]);
 327         if(!W_ERROR_IS_OK(error)) {
 328                 fprintf(stderr, "Error deleting '%s'\n", argv[1]);
 329                 return error;
 330         } else {
 331                 fprintf(stderr, "Successfully deleted '%s'\n", argv[1]);
 332         }
 333
 334         return WERR_OK;
 335 }
 336
 337 static WERROR cmd_rmval(struct regshell_context *ctx, int argc, char **argv)
 338 {
 339         WERROR error;
 340
 341         if(argc < 2) {
 342                 fprintf(stderr, "Usage: rmval <valuename>\n");
 343                 return WERR_INVALID_PARAM;
 344         }
 345
 346         error = reg_del_value(ctx, ctx->current, argv[1]);
 347         if(!W_ERROR_IS_OK(error)) {
 348                 fprintf(stderr, "Error deleting value '%s'\n", argv[1]);
 349                 return error;
 350         } else {
 351                 fprintf(stderr, "Successfully deleted value '%s'\n", argv[1]);
 352         }
 353
 354         return WERR_OK;
 355 }
 356
 357 _NORETURN_ static WERROR cmd_exit(struct regshell_context *ctx,
 358                                   int argc, char **argv)
 359 {
 360         exit(0);
 361 }
 362
 363 static WERROR cmd_help(struct regshell_context *ctx, int, char **);
 364
 365 static struct {
 366         const char *name;
 367         const char *alias;
 368         const char *help;
 369         WERROR (*handle)(struct regshell_context *ctx, int argc, char **argv);
 370 } regshell_cmds[] = {
 371         {"ck", "cd", "Change current key", cmd_ck },
 372         {"info", "i", "Show detailed information of a key", cmd_info },
 373         {"list", "ls", "List values/keys in current key", cmd_ls },
 374         {"print", "p", "Print value", cmd_print },
 375         {"mkkey", "mkdir", "Make new key", cmd_mkkey },
 376         {"rmval", "rm", "Remove value", cmd_rmval },
 377         {"rmkey", "rmdir", "Remove key", cmd_rmkey },
 378         {"pwd", "pwk", "Printing current key", cmd_pwd },
 379         {"set", "update", "Update value", cmd_set },
 380         {"help", "?", "Help", cmd_help },
 381         {"exit", "quit", "Exit", cmd_exit },
 382         {"predef", "predefined", "Go to predefined key", cmd_predef },
 383         {NULL }
 384 };
 385
 386 static WERROR cmd_help(struct regshell_context *ctx,
 387                        int argc, char **argv)
 388 {
 389         unsigned int i;
 390         printf("Available commands:\n");
 391         for(i = 0; regshell_cmds[i].name; i++) {
 392                 printf("%s - %s\n", regshell_cmds[i].name,
 393                         regshell_cmds[i].help);
 394         }
 395         return WERR_OK;
 396 }
 397
 398 static WERROR process_cmd(struct regshell_context *ctx,
 399                           char *line)
 400 {
 401         int argc;
 402         char **argv = NULL;
 403         int ret, i;
 404
 405         if ((ret = poptParseArgvString(line, &argc, (const char ***) &argv)) != 0) {
 406                 fprintf(stderr, "regshell: %s\n", poptStrerror(ret));
 407                 return WERR_INVALID_PARAM;
 408         }
 409
 410         for(i = 0; regshell_cmds[i].name; i++) {
 411                 if(!strcmp(regshell_cmds[i].name, argv[0]) ||
 412                    (regshell_cmds[i].alias && !strcmp(regshell_cmds[i].alias, argv[0]))) {
 413                         return regshell_cmds[i].handle(ctx, argc, argv);
 414                 }
 415         }
 416
 417         fprintf(stderr, "No such command '%s'\n", argv[0]);
 418
 419         return WERR_INVALID_PARAM;
 420 }
 421
 422 #define MAX_COMPLETIONS 100
 423
 424 static struct registry_key *current_key = NULL;
 425
 426 static char **reg_complete_command(const char *text, int start, int end)
 427 {
 428         /* Complete command */
 429         char **matches;
 430         size_t len, samelen=0;
 431         int i, count=1;
 432
 433         matches = malloc_array_p(char *, MAX_COMPLETIONS);
 434         if (!matches) return NULL;
 435         matches[0] = NULL;
 436
 437         len = strlen(text);
 438         for (i=0;regshell_cmds[i].handle && count < MAX_COMPLETIONS-1;i++) {
 439                 if (strncmp(text, regshell_cmds[i].name, len) == 0) {
 440                         matches[count] = strdup(regshell_cmds[i].name);
 441                         if (!matches[count])
 442                                 goto cleanup;
 443                         if (count == 1)
 444                                 samelen = strlen(matches[count]);
 445                         else
 446                                 while (strncmp(matches[count], matches[count-1], samelen) != 0)
 447                                         samelen--;
 448                         count++;
 449                 }
 450         }
 451
 452         switch (count) {
 453         case 0: /* should never happen */
 454         case 1:
 455                 goto cleanup;
 456         case 2:
 457                 matches[0] = strdup(matches[1]);
 458                 break;
 459         default:
 460                 matches[0] = strndup(matches[1], samelen);
 461         }
 462         matches[count] = NULL;
 463         return matches;
 464
 465 cleanup:
 466         count--;
 467         while (count >= 0) {
 468                 free(matches[count]);
 469                 count--;
 470         }
 471         free(matches);
 472         return NULL;
 473 }
 474
 475 static char **reg_complete_key(const char *text, int start, int end)
 476 {
 477         struct registry_key *base;
 478         const char *subkeyname;
 479         unsigned int i, j = 1;
 480         size_t len, samelen = 0;
 481         char **matches;
 482         const char *base_n = "";
 483         TALLOC_CTX *mem_ctx;
 484         WERROR status;
 485
 486         matches = malloc_array_p(char *, MAX_COMPLETIONS);
 487         if (!matches) return NULL;
 488         matches[0] = NULL;
 489         mem_ctx = talloc_init("completion");
 490
 491         base = current_key;
 492
 493         len = strlen(text);
 494         for(i = 0; j < MAX_COMPLETIONS-1; i++) {
 495                 status = reg_key_get_subkey_by_index(mem_ctx, base, i,
 496                                              &subkeyname, NULL, NULL);
 497                 if(W_ERROR_IS_OK(status)) {
 498                         if(!strncmp(text, subkeyname, len)) {
 499                                 matches[j] = strdup(subkeyname);
 500                                 j++;
 501
 502                                 if (j == 1)
 503                                         samelen = strlen(matches[j]);
 504                                 else
 505                                         while (strncmp(matches[j], matches[j-1], samelen) != 0)
 506                                                 samelen--;
 507                         }
 508                 } else if(W_ERROR_EQUAL(status, WERR_NO_MORE_ITEMS)) {
 509                         break;
 510                 } else {
 511                         int n;
 512
 513                         printf("Error creating completion list: %s\n",
 514                                 win_errstr(status));
 515
 516                         for (n = j; n >= 0; n--) {
 517                                 SAFE_FREE(matches[n]);
 518                         }
 519                         SAFE_FREE(matches);
 520                         talloc_free(mem_ctx);
 521                         return NULL;
 522                 }
 523         }
 524
 525         if (j == 1) { /* No matches at all */
 526                 SAFE_FREE(matches);
 527                 talloc_free(mem_ctx);
 528                 return NULL;
 529         }
 530
 531         if (j == 2) { /* Exact match */
 532                 asprintf(&matches[0], "%s%s", base_n, matches[1]);
 533         } else {
 534                 asprintf(&matches[0], "%s%s", base_n,
 535                                 talloc_strndup(mem_ctx, matches[1], samelen));
 536         }
 537         talloc_free(mem_ctx);
 538
 539         matches[j] = NULL;
 540         return matches;
 541 }
 542
 543 static char **reg_completion(const char *text, int start, int end)
 544 {
 545         smb_readline_ca_char(' ');
 546
 547         if (start == 0) {
 548                 return reg_complete_command(text, start, end);
 549         } else {
 550                 return reg_complete_key(text, start, end);
 551         }
 552 }
 553
 554 int main(int argc, char **argv)
 555 {
 556         int opt;
 557         const char *file = NULL;
 558         poptContext pc;
 559         const char *remote = NULL;
 560         struct regshell_context *ctx;
 561         struct tevent_context *ev_ctx;
 562         bool ret = true;
 563         struct poptOption long_options[] = {
 564                 POPT_AUTOHELP
 565                 {"file", 'F', POPT_ARG_STRING, &file, 0, "open hive file", NULL },
 566                 {"remote", 'R', POPT_ARG_STRING, &remote, 0, "connect to specified remote server", NULL},
 567                 POPT_COMMON_SAMBA
 568                 POPT_COMMON_CREDENTIALS
 569                 POPT_COMMON_VERSION
 570                 { NULL }
 571         };
 572
 573         pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 574
 575         while((opt = poptGetNextOpt(pc)) != -1) {
 576         }
 577
 578         ctx = talloc_zero(NULL, struct regshell_context);
 579
 580         ev_ctx = s4_event_context_init(ctx);
 581
 582         if (remote != NULL) {
 583                 ctx->registry = reg_common_open_remote(remote, ev_ctx,
 584                                          cmdline_lp_ctx, cmdline_credentials);
 585         } else if (file != NULL) {
 586                 ctx->current = reg_common_open_file(file, ev_ctx, cmdline_lp_ctx, cmdline_credentials);
 587                 if (ctx->current == NULL)
 588                         return 1;
 589                 ctx->registry = ctx->current->context;
 590                 ctx->path = talloc_strdup(ctx, "");
 591                 ctx->predef = NULL;
 592                 ctx->root = ctx->current;
 593         } else {
 594                 ctx->registry = reg_common_open_local(cmdline_credentials, ev_ctx, cmdline_lp_ctx);
 595         }
 596
 597         if (ctx->registry == NULL)
 598                 return 1;
 599
 600         if (ctx->current == NULL) {
 601                 unsigned int i;
 602
 603                 for (i = 0; (reg_predefined_keys[i].handle != 0) &&
 604                         (ctx->current == NULL); i++) {
 605                         WERROR err;
 606                         err = reg_get_predefined_key(ctx->registry,
 607                                                      reg_predefined_keys[i].handle,
 608                                                      &ctx->current);
 609                         if (W_ERROR_IS_OK(err)) {
 610                                 ctx->predef = talloc_strdup(ctx,
 611                                                           reg_predefined_keys[i].name);
 612                                 ctx->path = talloc_strdup(ctx, "");
 613                                 ctx->root = ctx->current;
 614                                 break;
 615                         } else {
 616                                 ctx->current = NULL;
 617                                 ctx->root = NULL;
 618                         }
 619                 }
 620         }
 621
 622         if (ctx->current == NULL) {
 623                 fprintf(stderr, "Unable to access any of the predefined keys\n");
 624                 return 1;
 625         }
 626
 627         poptFreeContext(pc);
 628
 629         while (true) {
 630                 char *line, *prompt;
 631
 632                 if (asprintf(&prompt, "%s\\%s> ", ctx->predef?ctx->predef:"",
 633                              ctx->path) < 0) {
 634                         ret = false;
 635                         break;
 636                 }
 637
 638                 current_key = ctx->current;             /* No way to pass a void * pointer
 639                                                            via readline :-( */
 640                 line = smb_readline(prompt, NULL, reg_completion);
 641
 642                 if (line == NULL) {
 643                         free(prompt);
 644                         break;
 645                 }
 646
 647                 if (line[0] != '\n') {
 648                         ret = W_ERROR_IS_OK(process_cmd(ctx, line));
 649                 }
 650                 free(line);
 651                 free(prompt);
 652         }
 653         talloc_free(ctx);
 654
 655         return (ret?0:1);
 656 }