cli.c

   1 /*
   2  * cli - Command Line Interface for the Unified Configuration Interface
   3  * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #include <strings.h>
  15 #include <string.h>
  16 #include <stdlib.h>
  17 #include <stdarg.h>
  18 #include <errno.h>
  19 #include <unistd.h>
  20 #include "uci.h"
  21
  22 #define MAX_ARGS        4 /* max command line arguments for batch mode */
  23
  24 static const char *delimiter = " ";
  25 static const char *appname;
  26 static enum {
  27         CLI_FLAG_MERGE =    (1 << 0),
  28         CLI_FLAG_QUIET =    (1 << 1),
  29         CLI_FLAG_NOCOMMIT = (1 << 2),
  30         CLI_FLAG_BATCH =    (1 << 3),
  31         CLI_FLAG_SHOW_EXT = (1 << 4),
  32 } flags;
  33
  34 static FILE *input;
  35
  36 static struct uci_context *ctx;
  37 enum {
  38         /* section cmds */
  39         CMD_GET,
  40         CMD_SET,
  41         CMD_ADD_LIST,
  42         CMD_DEL_LIST,
  43         CMD_DEL,
  44         CMD_RENAME,
  45         CMD_REVERT,
  46         CMD_REORDER,
  47         /* package cmds */
  48         CMD_SHOW,
  49         CMD_CHANGES,
  50         CMD_EXPORT,
  51         CMD_COMMIT,
  52         /* other cmds */
  53         CMD_ADD,
  54         CMD_IMPORT,
  55         CMD_HELP,
  56 };
  57
  58 struct uci_type_list {
  59         unsigned int idx;
  60         const char *name;
  61         struct uci_type_list *next;
  62 };
  63
  64 static struct uci_type_list *type_list = NULL;
  65 static char *typestr = NULL;
  66 static const char *cur_section_ref = NULL;
  67
  68 static int uci_cmd(int argc, char **argv);
  69
  70 static void
  71 uci_reset_typelist(void)
  72 {
  73         struct uci_type_list *type;
  74         while (type_list != NULL) {
  75                         type = type_list;
  76                         type_list = type_list->next;
  77                         free(type);
  78         }
  79         if (typestr) {
  80                 free(typestr);
  81                 typestr = NULL;
  82         }
  83         cur_section_ref = NULL;
  84 }
  85
  86 static char *
  87 uci_lookup_section_ref(struct uci_section *s)
  88 {
  89         struct uci_type_list *ti = type_list;
  90         char *ret;
  91         int maxlen;
  92
  93         if (!(flags & CLI_FLAG_SHOW_EXT))
  94                 return s->e.name;
  95
  96         /* look up in section type list */
  97         while (ti) {
  98                 if (strcmp(ti->name, s->type) == 0)
  99                         break;
 100                 ti = ti->next;
 101         }
 102         if (!ti) {
 103                 ti = malloc(sizeof(struct uci_type_list));
 104                 if (!ti)
 105                         return NULL;
 106                 memset(ti, 0, sizeof(struct uci_type_list));
 107                 ti->next = type_list;
 108                 type_list = ti;
 109                 ti->name = s->type;
 110         }
 111
 112         if (s->anonymous) {
 113                 maxlen = strlen(s->type) + 1 + 2 + 10;
 114                 if (!typestr) {
 115                         typestr = malloc(maxlen);
 116                         if (!typestr)
 117                                 return NULL;
 118                 } else {
 119                         void *p = realloc(typestr, maxlen);
 120                         if (!p) {
 121                                 free(typestr);
 122                                 return NULL;
 123                         }
 124
 125                         typestr = p;
 126                 }
 127
 128                 if (typestr)
 129                         sprintf(typestr, "@%s[%d]", ti->name, ti->idx);
 130
 131                 ret = typestr;
 132         } else {
 133                 ret = s->e.name;
 134         }
 135
 136         ti->idx++;
 137
 138         return ret;
 139 }
 140
 141 static void uci_usage(void)
 142 {
 143         fprintf(stderr,
 144                 "Usage: %s [<options>] <command> [<arguments>]\n\n"
 145                 "Commands:\n"
 146                 "\tbatch\n"
 147                 "\texport     [<config>]\n"
 148                 "\timport     [<config>]\n"
 149                 "\tchanges    [<config>]\n"
 150                 "\tcommit     [<config>]\n"
 151                 "\tadd        <config> <section-type>\n"
 152                 "\tadd_list   <config>.<section>.<option>=<string>\n"
 153                 "\tdel_list   <config>.<section>.<option>=<string>\n"
 154                 "\tshow       [<config>[.<section>[.<option>]]]\n"
 155                 "\tget        <config>.<section>[.<option>]\n"
 156                 "\tset        <config>.<section>[.<option>]=<value>\n"
 157                 "\tdelete     <config>[.<section>[[.<option>][=<id>]]]\n"
 158                 "\trename     <config>.<section>[.<option>]=<name>\n"
 159                 "\trevert     <config>[.<section>[.<option>]]\n"
 160                 "\treorder    <config>.<section>=<position>\n"
 161                 "\n"
 162                 "Options:\n"
 163                 "\t-c <path>  set the search path for config files (default: /etc/config)\n"
 164                 "\t-d <str>   set the delimiter for list values in uci show\n"
 165                 "\t-f <file>  use <file> as input instead of stdin\n"
 166                 "\t-m         when importing, merge data into an existing package\n"
 167                 "\t-n         name unnamed sections on export (default)\n"
 168                 "\t-N         don't name unnamed sections\n"
 169                 "\t-p <path>  add a search path for config change files\n"
 170                 "\t-P <path>  add a search path for config change files and use as default\n"
 171                 "\t-q         quiet mode (don't print error messages)\n"
 172                 "\t-s         force strict mode (stop on parser errors, default)\n"
 173                 "\t-S         disable strict mode\n"
 174                 "\t-X         do not use extended syntax on 'show'\n"
 175                 "\n",
 176                 appname
 177         );
 178 }
 179
 180 static void cli_perror(void)
 181 {
 182         if (flags & CLI_FLAG_QUIET)
 183                 return;
 184
 185         uci_perror(ctx, appname);
 186 }
 187
 188 __attribute__((format(printf, 1, 2)))
 189 static void cli_error(const char *fmt, ...)
 190 {
 191         va_list ap;
 192
 193         if (flags & CLI_FLAG_QUIET)
 194                 return;
 195
 196         va_start(ap, fmt);
 197         vfprintf(stderr, fmt, ap);
 198         va_end(ap);
 199 }
 200
 201 static void uci_print_value(FILE *f, const char *v)
 202 {
 203         fprintf(f, "'");
 204         while (*v) {
 205                 if (*v != '\'')
 206                         fputc(*v, f);
 207                 else
 208                         fprintf(f, "'\\''");
 209                 v++;
 210         }
 211         fprintf(f, "'");
 212 }
 213
 214 static void uci_show_value(struct uci_option *o, bool quote)
 215 {
 216         struct uci_element *e;
 217         bool sep = false;
 218         char *space;
 219
 220         switch(o->type) {
 221         case UCI_TYPE_STRING:
 222                 if (quote)
 223                         uci_print_value(stdout, o->v.string);
 224                 else
 225                         printf("%s", o->v.string);
 226                 printf("\n");
 227                 break;
 228         case UCI_TYPE_LIST:
 229                 uci_foreach_element(&o->v.list, e) {
 230                         printf("%s", (sep ? delimiter : ""));
 231                         space = strpbrk(e->name, " \t\r\n");
 232                         if (!space && !quote)
 233                                 printf("%s", e->name);
 234                         else
 235                                 uci_print_value(stdout, e->name);
 236                         sep = true;
 237                 }
 238                 printf("\n");
 239                 break;
 240         default:
 241                 printf("<unknown>\n");
 242                 break;
 243         }
 244 }
 245
 246 static void uci_show_option(struct uci_option *o, bool quote)
 247 {
 248         printf("%s.%s.%s=",
 249                 o->section->package->e.name,
 250                 (cur_section_ref ? cur_section_ref : o->section->e.name),
 251                 o->e.name);
 252         uci_show_value(o, quote);
 253 }
 254
 255 static void uci_show_section(struct uci_section *s)
 256 {
 257         struct uci_element *e;
 258         const char *cname;
 259         const char *sname;
 260
 261         cname = s->package->e.name;
 262         sname = (cur_section_ref ? cur_section_ref : s->e.name);
 263         printf("%s.%s=%s\n", cname, sname, s->type);
 264         uci_foreach_element(&s->options, e) {
 265                 uci_show_option(uci_to_option(e), true);
 266         }
 267 }
 268
 269 static void uci_show_package(struct uci_package *p)
 270 {
 271         struct uci_element *e;
 272
 273         uci_reset_typelist();
 274         uci_foreach_element( &p->sections, e) {
 275                 struct uci_section *s = uci_to_section(e);
 276                 cur_section_ref = uci_lookup_section_ref(s);
 277                 uci_show_section(s);
 278         }
 279         uci_reset_typelist();
 280 }
 281
 282 static void uci_show_changes(struct uci_package *p)
 283 {
 284         struct uci_element *e;
 285
 286         uci_foreach_element(&p->saved_delta, e) {
 287                 struct uci_delta *h = uci_to_delta(e);
 288                 char *prefix = "";
 289                 char *op = "=";
 290
 291                 switch(h->cmd) {
 292                 case UCI_CMD_REMOVE:
 293                         prefix = "-";
 294                         break;
 295                 case UCI_CMD_LIST_ADD:
 296                         op = "+=";
 297                         break;
 298                 case UCI_CMD_LIST_DEL:
 299                         op = "-=";
 300                         break;
 301                 default:
 302                         break;
 303                 }
 304                 printf("%s%s.%s", prefix, p->e.name, h->section);
 305                 if (e->name)
 306                         printf(".%s", e->name);
 307                 if (h->cmd != UCI_CMD_REMOVE) {
 308                         printf("%s", op);
 309                         uci_print_value(stdout, h->value);
 310                 }
 311                 printf("\n");
 312         }
 313 }
 314
 315 static int package_cmd(int cmd, char *tuple)
 316 {
 317         struct uci_element *e = NULL;
 318         struct uci_ptr ptr;
 319         int ret = 1;
 320
 321         if (uci_lookup_ptr(ctx, &ptr, tuple, true) != UCI_OK) {
 322                 cli_perror();
 323                 return 1;
 324         }
 325
 326         e = ptr.last;
 327         switch(cmd) {
 328         case CMD_CHANGES:
 329                 uci_show_changes(ptr.p);
 330                 break;
 331         case CMD_COMMIT:
 332                 if (flags & CLI_FLAG_NOCOMMIT) {
 333                         ret = 0;
 334                         goto out;
 335                 }
 336                 if (uci_commit(ctx, &ptr.p, false) != UCI_OK) {
 337                         cli_perror();
 338                         goto out;
 339                 }
 340                 break;
 341         case CMD_EXPORT:
 342                 if (uci_export(ctx, stdout, ptr.p, true) != UCI_OK) {
 343                         goto out;
 344                 }
 345                 break;
 346         case CMD_SHOW:
 347                 if (!(ptr.flags & UCI_LOOKUP_COMPLETE)) {
 348                         ctx->err = UCI_ERR_NOTFOUND;
 349                         cli_perror();
 350                         goto out;
 351                 }
 352                 switch(e->type) {
 353                         case UCI_TYPE_PACKAGE:
 354                                 uci_show_package(ptr.p);
 355                                 break;
 356                         case UCI_TYPE_SECTION:
 357                                 uci_show_section(ptr.s);
 358                                 break;
 359                         case UCI_TYPE_OPTION:
 360                                 uci_show_option(ptr.o, true);
 361                                 break;
 362                         default:
 363                                 /* should not happen */
 364                                 goto out;
 365                 }
 366                 break;
 367         }
 368
 369         ret = 0;
 370
 371 out:
 372         if (ptr.p)
 373                 uci_unload(ctx, ptr.p);
 374         return ret;
 375 }
 376
 377 static int uci_do_import(int argc, char **argv)
 378 {
 379         struct uci_package *package = NULL;
 380         char *name = NULL;
 381         int ret = UCI_OK;
 382         bool merge = false;
 383
 384         if (argc > 2)
 385                 return 255;
 386
 387         if (argc == 2)
 388                 name = argv[1];
 389         else if (flags & CLI_FLAG_MERGE)
 390                 /* need a package to merge */
 391                 return 255;
 392
 393         if (flags & CLI_FLAG_MERGE) {
 394                 if (uci_load(ctx, name, &package) != UCI_OK)
 395                         package = NULL;
 396                 else
 397                         merge = true;
 398         }
 399         ret = uci_import(ctx, input, name, &package, (name != NULL));
 400         if (ret == UCI_OK) {
 401                 if (merge) {
 402                         ret = uci_save(ctx, package);
 403                 } else {
 404                         struct uci_element *e;
 405                         /* loop through all config sections and overwrite existing data */
 406                         uci_foreach_element(&ctx->root, e) {
 407                                 struct uci_package *p = uci_to_package(e);
 408                                 ret = uci_commit(ctx, &p, true);
 409                         }
 410                 }
 411         }
 412
 413         if (ret != UCI_OK) {
 414                 cli_perror();
 415                 return 1;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int uci_do_package_cmd(int cmd, int argc, char **argv)
 422 {
 423         char **configs = NULL;
 424         char **p;
 425         int ret = 1;
 426
 427         if (argc > 2)
 428                 return 255;
 429
 430         if (argc == 2)
 431                 return package_cmd(cmd, argv[1]);
 432
 433         if ((uci_list_configs(ctx, &configs) != UCI_OK) || !configs) {
 434                 cli_perror();
 435                 goto out;
 436         }
 437
 438         for (p = configs; *p; p++) {
 439                 package_cmd(cmd, *p);
 440         }
 441
 442         ret = 0;
 443 out:
 444         free(configs);
 445         return ret;
 446 }
 447
 448 static int uci_do_add(int argc, char **argv)
 449 {
 450         struct uci_package *p = NULL;
 451         struct uci_section *s = NULL;
 452         int ret;
 453
 454         if (argc != 3)
 455                 return 255;
 456
 457         ret = uci_load(ctx, argv[1], &p);
 458         if (ret != UCI_OK)
 459                 goto done;
 460
 461         ret = uci_add_section(ctx, p, argv[2], &s);
 462         if (ret != UCI_OK)
 463                 goto done;
 464
 465         ret = uci_save(ctx, p);
 466
 467 done:
 468         if (ret != UCI_OK)
 469                 cli_perror();
 470         else if (s)
 471                 fprintf(stdout, "%s\n", s->e.name);
 472
 473         return ret;
 474 }
 475
 476 static int uci_do_section_cmd(int cmd, int argc, char **argv)
 477 {
 478         struct uci_element *e;
 479         struct uci_ptr ptr;
 480         int ret = UCI_OK;
 481         int dummy;
 482
 483         if (argc != 2)
 484                 return 255;
 485
 486         if (uci_lookup_ptr(ctx, &ptr, argv[1], true) != UCI_OK) {
 487                 cli_perror();
 488                 return 1;
 489         }
 490
 491         if (ptr.value && (cmd != CMD_SET) && (cmd != CMD_DEL) &&
 492             (cmd != CMD_ADD_LIST) && (cmd != CMD_DEL_LIST) &&
 493             (cmd != CMD_RENAME) && (cmd != CMD_REORDER))
 494                 return 1;
 495
 496         e = ptr.last;
 497         switch(cmd) {
 498         case CMD_GET:
 499                 if (!(ptr.flags & UCI_LOOKUP_COMPLETE)) {
 500                         ctx->err = UCI_ERR_NOTFOUND;
 501                         cli_perror();
 502                         return 1;
 503                 }
 504                 switch(e->type) {
 505                 case UCI_TYPE_SECTION:
 506                         printf("%s\n", ptr.s->type);
 507                         break;
 508                 case UCI_TYPE_OPTION:
 509                         uci_show_value(ptr.o, false);
 510                         break;
 511                 default:
 512                         break;
 513                 }
 514                 /* throw the value to stdout */
 515                 break;
 516         case CMD_RENAME:
 517                 ret = uci_rename(ctx, &ptr);
 518                 break;
 519         case CMD_REVERT:
 520                 ret = uci_revert(ctx, &ptr);
 521                 break;
 522         case CMD_SET:
 523                 ret = uci_set(ctx, &ptr);
 524                 break;
 525         case CMD_ADD_LIST:
 526                 ret = uci_add_list(ctx, &ptr);
 527                 break;
 528         case CMD_DEL_LIST:
 529                 ret = uci_del_list(ctx, &ptr);
 530                 break;
 531         case CMD_REORDER:
 532                 if (!ptr.s || !ptr.value) {
 533                         ctx->err = UCI_ERR_NOTFOUND;
 534                         cli_perror();
 535                         return 1;
 536                 }
 537                 ret = uci_reorder_section(ctx, ptr.s, strtoul(ptr.value, NULL, 10));
 538                 break;
 539         case CMD_DEL:
 540                 if (ptr.value && !sscanf(ptr.value, "%d", &dummy))
 541                         return 1;
 542                 ret = uci_delete(ctx, &ptr);
 543                 break;
 544         }
 545
 546         /* no save necessary for get */
 547         if ((cmd == CMD_GET) || (cmd == CMD_REVERT))
 548                 return 0;
 549
 550         /* save changes, but don't commit them yet */
 551         if (ret == UCI_OK)
 552                 ret = uci_save(ctx, ptr.p);
 553
 554         if (ret != UCI_OK) {
 555                 cli_perror();
 556                 return 1;
 557         }
 558
 559         return 0;
 560 }
 561
 562 static int uci_batch_cmd(void)
 563 {
 564         char *argv[MAX_ARGS + 2];
 565         char *str = NULL;
 566         int ret = 0;
 567         int i, j;
 568
 569         for(i = 0; i <= MAX_ARGS; i++) {
 570                 if (i == MAX_ARGS) {
 571                         cli_error("Too many arguments\n");
 572                         return 1;
 573                 }
 574                 argv[i] = NULL;
 575                 if (uci_parse_argument(ctx, input, &str, &argv[i]) != UCI_OK) {
 576                         cli_perror();
 577                         i = 0;
 578                         break;
 579                 }
 580                 if (!argv[i][0])
 581                         break;
 582                 argv[i] = strdup(argv[i]);
 583                 if (!argv[i]) {
 584                         cli_error("uci: %s", strerror(errno));
 585                         return 1;
 586                 }
 587         }
 588         argv[i] = NULL;
 589
 590         if (i > 0) {
 591                 if (!strcasecmp(argv[0], "exit"))
 592                         return 254;
 593                 ret = uci_cmd(i, argv);
 594         } else
 595                 return 0;
 596
 597         for (j = 0; j < i; j++) {
 598                 free(argv[j]);
 599         }
 600
 601         return ret;
 602 }
 603
 604 static int uci_batch(void)
 605 {
 606         int ret = 0;
 607
 608         flags |= CLI_FLAG_BATCH;
 609         while (!feof(input)) {
 610                 struct uci_element *e, *tmp;
 611
 612                 ret = uci_batch_cmd();
 613                 if (ret == 254)
 614                         return 0;
 615                 else if (ret == 255)
 616                         cli_error("Unknown command\n");
 617
 618                 /* clean up */
 619                 uci_foreach_element_safe(&ctx->root, tmp, e) {
 620                         uci_unload(ctx, uci_to_package(e));
 621                 }
 622         }
 623         flags &= ~CLI_FLAG_BATCH;
 624
 625         return 0;
 626 }
 627
 628 static int uci_cmd(int argc, char **argv)
 629 {
 630         int cmd = 0;
 631
 632         if (!strcasecmp(argv[0], "batch") && !(flags & CLI_FLAG_BATCH))
 633                 return uci_batch();
 634         else if (!strcasecmp(argv[0], "show"))
 635                 cmd = CMD_SHOW;
 636         else if (!strcasecmp(argv[0], "changes"))
 637                 cmd = CMD_CHANGES;
 638         else if (!strcasecmp(argv[0], "export"))
 639                 cmd = CMD_EXPORT;
 640         else if (!strcasecmp(argv[0], "commit"))
 641                 cmd = CMD_COMMIT;
 642         else if (!strcasecmp(argv[0], "get"))
 643                 cmd = CMD_GET;
 644         else if (!strcasecmp(argv[0], "set"))
 645                 cmd = CMD_SET;
 646         else if (!strcasecmp(argv[0], "ren") ||
 647                  !strcasecmp(argv[0], "rename"))
 648                 cmd = CMD_RENAME;
 649         else if (!strcasecmp(argv[0], "revert"))
 650                 cmd = CMD_REVERT;
 651         else if (!strcasecmp(argv[0], "reorder"))
 652                 cmd = CMD_REORDER;
 653         else if (!strcasecmp(argv[0], "del") ||
 654                  !strcasecmp(argv[0], "delete"))
 655                 cmd = CMD_DEL;
 656         else if (!strcasecmp(argv[0], "import"))
 657                 cmd = CMD_IMPORT;
 658         else if (!strcasecmp(argv[0], "help"))
 659                 cmd = CMD_HELP;
 660         else if (!strcasecmp(argv[0], "add"))
 661                 cmd = CMD_ADD;
 662         else if (!strcasecmp(argv[0], "add_list"))
 663                 cmd = CMD_ADD_LIST;
 664         else if (!strcasecmp(argv[0], "del_list"))
 665                 cmd = CMD_DEL_LIST;
 666         else
 667                 cmd = -1;
 668
 669         switch(cmd) {
 670                 case CMD_ADD_LIST:
 671                 case CMD_DEL_LIST:
 672                 case CMD_GET:
 673                 case CMD_SET:
 674                 case CMD_DEL:
 675                 case CMD_RENAME:
 676                 case CMD_REVERT:
 677                 case CMD_REORDER:
 678                         return uci_do_section_cmd(cmd, argc, argv);
 679                 case CMD_SHOW:
 680                 case CMD_EXPORT:
 681                 case CMD_COMMIT:
 682                 case CMD_CHANGES:
 683                         return uci_do_package_cmd(cmd, argc, argv);
 684                 case CMD_IMPORT:
 685                         return uci_do_import(argc, argv);
 686                 case CMD_ADD:
 687                         return uci_do_add(argc, argv);
 688                 case CMD_HELP:
 689                         uci_usage();
 690                         return 0;
 691                 default:
 692                         return 255;
 693         }
 694 }
 695
 696 int main(int argc, char **argv)
 697 {
 698         int ret;
 699         int c;
 700
 701         flags = CLI_FLAG_SHOW_EXT;
 702         appname = argv[0];
 703         input = stdin;
 704         ctx = uci_alloc_context();
 705         if (!ctx) {
 706                 cli_error("Out of memory\n");
 707                 return 1;
 708         }
 709
 710         while((c = getopt(argc, argv, "c:d:f:LmnNp:P:sSqX")) != -1) {
 711                 switch(c) {
 712                         case 'c':
 713                                 uci_set_confdir(ctx, optarg);
 714                                 break;
 715                         case 'd':
 716                                 delimiter = optarg;
 717                                 break;
 718                         case 'f':
 719                                 if (input != stdin) {
 720                                         fclose(input);
 721                                         cli_error("Too many input files.\n");
 722                                         return 1;
 723                                 }
 724
 725                                 input = fopen(optarg, "r");
 726                                 if (!input) {
 727                                         cli_error("uci: %s", strerror(errno));
 728                                         return 1;
 729                                 }
 730                                 break;
 731                         case 'm':
 732                                 flags |= CLI_FLAG_MERGE;
 733                                 break;
 734                         case 's':
 735                                 ctx->flags |= UCI_FLAG_STRICT;
 736                                 break;
 737                         case 'S':
 738                                 ctx->flags &= ~UCI_FLAG_STRICT;
 739                                 ctx->flags |= UCI_FLAG_PERROR;
 740                                 break;
 741                         case 'n':
 742                                 ctx->flags |= UCI_FLAG_EXPORT_NAME;
 743                                 break;
 744                         case 'N':
 745                                 ctx->flags &= ~UCI_FLAG_EXPORT_NAME;
 746                                 break;
 747                         case 'p':
 748                                 uci_add_delta_path(ctx, optarg);
 749                                 break;
 750                         case 'P':
 751                                 uci_add_delta_path(ctx, ctx->savedir);
 752                                 uci_set_savedir(ctx, optarg);
 753                                 flags |= CLI_FLAG_NOCOMMIT;
 754                                 break;
 755                         case 'q':
 756                                 flags |= CLI_FLAG_QUIET;
 757                                 break;
 758                         case 'X':
 759                                 flags &= ~CLI_FLAG_SHOW_EXT;
 760                                 break;
 761                         default:
 762                                 uci_usage();
 763                                 return 0;
 764                 }
 765         }
 766         if (optind > 1)
 767                 argv[optind - 1] = argv[0];
 768         argv += optind - 1;
 769         argc -= optind - 1;
 770
 771         if (argc < 2) {
 772                 uci_usage();
 773                 return 0;
 774         }
 775
 776         ret = uci_cmd(argc - 1, argv + 1);
 777         if (input != stdin)
 778                 fclose(input);
 779
 780         if (ret == 255)
 781                 uci_usage();
 782
 783         uci_free_context(ctx);
 784
 785         return ret;
 786 }