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