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