cli.c

   1 /*
   2  * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 #include <strings.h>
  14 #include <stdlib.h>
  15 #include <unistd.h>
  16 #include "uci.h"
  17
  18 static const char *appname = "uci";
  19 static enum {
  20         CLI_FLAG_MERGE = (1 << 0),
  21 } flags;
  22 static FILE *input = stdin;
  23
  24 static struct uci_context *ctx;
  25 enum {
  26         /* section cmds */
  27         CMD_GET,
  28         CMD_SET,
  29         CMD_DEL,
  30         CMD_RENAME,
  31         /* package cmds */
  32         CMD_SHOW,
  33         CMD_IMPORT,
  34         CMD_EXPORT,
  35         CMD_COMMIT,
  36 };
  37
  38 static void uci_usage(int argc, char **argv)
  39 {
  40         fprintf(stderr,
  41                 "Usage: %s [<options>] <command> [<arguments>]\n\n"
  42                 "Commands:\n"
  43                 "\texport     [<config>]\n"
  44                 "\timport     [<config>]\n"
  45                 "\tshow       [<config>[.<section>[.<option>]]]\n"
  46                 "\tget        <config>.<section>[.<option>]\n"
  47                 "\tset        <config>.<section>[.<option>]=<value>\n"
  48                 "\trename     <config>.<section>[.<option>]=<name>\n"
  49                 "\n"
  50                 "Options:\n"
  51                 "\t-f <file>  use <file> as input instead of stdin\n"
  52                 "\t-m         when importing, merge data into an existing package\n"
  53                 "\t-s         force strict mode (stop on parser errors)\n"
  54                 "\t-S         disable strict mode\n"
  55                 "\n",
  56                 argv[0]
  57         );
  58         exit(255);
  59 }
  60
  61 static void uci_show_section(struct uci_section *p)
  62 {
  63         struct uci_element *e;
  64         const char *cname, *sname;
  65
  66         cname = p->package->e.name;
  67         sname = p->e.name;
  68         printf("%s.%s=%s\n", cname, sname, p->type);
  69         uci_foreach_element(&p->options, e) {
  70                 printf("%s.%s.%s=%s\n", cname, sname, e->name, uci_to_option(e)->value);
  71         }
  72 }
  73
  74 static void uci_show_package(struct uci_package *p)
  75 {
  76         struct uci_element *e;
  77
  78         uci_foreach_element( &p->sections, e) {
  79                 uci_show_section(uci_to_section(e));
  80         }
  81 }
  82
  83
  84 static int package_cmd(int cmd, char *package)
  85 {
  86         struct uci_package *p = NULL;
  87
  88         if (uci_load(ctx, package, &p) != UCI_OK) {
  89                 uci_perror(ctx, appname);
  90                 return 1;
  91         }
  92         switch(cmd) {
  93         case CMD_COMMIT:
  94                 if (uci_commit(ctx, &p) != UCI_OK)
  95                         uci_perror(ctx, appname);
  96                 break;
  97         case CMD_EXPORT:
  98                 uci_export(ctx, stdout, p, true);
  99                 break;
 100         case CMD_SHOW:
 101                 uci_show_package(p);
 102                 break;
 103         }
 104
 105         uci_unload(ctx, p);
 106         return 0;
 107 }
 108
 109 static int uci_do_import(int argc, char **argv)
 110 {
 111         return 0;
 112 }
 113
 114 static int uci_do_package_cmd(int cmd, int argc, char **argv)
 115 {
 116         char **configs = NULL;
 117         char **p;
 118
 119         if (argc > 2)
 120                 return 255;
 121
 122         if (argc == 2)
 123                 return package_cmd(cmd, argv[1]);
 124
 125         if ((uci_list_configs(ctx, &configs) != UCI_OK) || !configs) {
 126                 uci_perror(ctx, appname);
 127                 return 1;
 128         }
 129
 130         for (p = configs; *p; p++) {
 131                 package_cmd(cmd, *p);
 132         }
 133
 134         return 0;
 135 }
 136
 137
 138 static int uci_do_section_cmd(int cmd, int argc, char **argv)
 139 {
 140         struct uci_package *p = NULL;
 141         struct uci_element *e = NULL;
 142         char *package = NULL;
 143         char *section = NULL;
 144         char *option = NULL;
 145         char *value = NULL;
 146         char **ptr = NULL;
 147         int ret = UCI_OK;
 148
 149         if (argc != 2)
 150                 return 255;
 151
 152         switch(cmd) {
 153         case CMD_SET:
 154         case CMD_RENAME:
 155                 ptr = &value;
 156                 break;
 157         default:
 158                 break;
 159         }
 160         if (uci_parse_tuple(ctx, argv[1], &package, &section, &option, ptr) != UCI_OK)
 161                 return 1;
 162
 163         if (uci_load(ctx, package, &p) != UCI_OK) {
 164                 uci_perror(ctx, appname);
 165                 return 1;
 166         }
 167
 168         switch(cmd) {
 169         case CMD_GET:
 170                 if (uci_lookup(ctx, &e, p, section, option) != UCI_OK)
 171                         return 1;
 172
 173                 switch(e->type) {
 174                 case UCI_TYPE_SECTION:
 175                         value = uci_to_section(e)->type;
 176                         break;
 177                 case UCI_TYPE_OPTION:
 178                         value = uci_to_option(e)->value;
 179                         break;
 180                 default:
 181                         /* should not happen */
 182                         return 1;
 183                 }
 184                 /* throw the value to stdout */
 185                 printf("%s\n", value);
 186                 break;
 187         case CMD_RENAME:
 188                 ret = uci_rename(ctx, p, section, option, value);
 189                 break;
 190         case CMD_SET:
 191                 ret = uci_set(ctx, p, section, option, value);
 192                 break;
 193         case CMD_DEL:
 194                 ret = uci_delete(ctx, p, section, option);
 195                 break;
 196         }
 197
 198         /* no save necessary for get */
 199         if (cmd == CMD_GET)
 200                 return 0;
 201
 202         /* save changes, but don't commit them yet */
 203         if (ret == UCI_OK)
 204                 ret = uci_save(ctx, p);
 205
 206         if (ret != UCI_OK) {
 207                 uci_perror(ctx, appname);
 208                 return 1;
 209         }
 210
 211         return 0;
 212 }
 213
 214 static int uci_cmd(int argc, char **argv)
 215 {
 216         int cmd = 0;
 217
 218         if (!strcasecmp(argv[0], "show"))
 219                 cmd = CMD_SHOW;
 220         else if (!strcasecmp(argv[0], "export"))
 221                 cmd = CMD_EXPORT;
 222         else if (!strcasecmp(argv[0], "commit"))
 223                 cmd = CMD_COMMIT;
 224         else if (!strcasecmp(argv[0], "get"))
 225                 cmd = CMD_GET;
 226         else if (!strcasecmp(argv[0], "set"))
 227                 cmd = CMD_SET;
 228         else if (!strcasecmp(argv[0], "ren") ||
 229                  !strcasecmp(argv[0], "rename"))
 230                 cmd = CMD_RENAME;
 231         else if (!strcasecmp(argv[0], "del"))
 232                 cmd = CMD_DEL;
 233         else if (!strcasecmp(argv[0], "import"))
 234                 cmd = CMD_IMPORT;
 235         else
 236                 cmd = -1;
 237
 238         switch(cmd) {
 239                 case CMD_GET:
 240                 case CMD_SET:
 241                 case CMD_DEL:
 242                 case CMD_RENAME:
 243                         return uci_do_section_cmd(cmd, argc, argv);
 244                 case CMD_SHOW:
 245                 case CMD_EXPORT:
 246                 case CMD_COMMIT:
 247                         return uci_do_package_cmd(cmd, argc, argv);
 248                 case CMD_IMPORT:
 249                         return uci_do_import(argc, argv);
 250                 default:
 251                         return 255;
 252         }
 253 }
 254
 255 int main(int argc, char **argv)
 256 {
 257         int ret;
 258         int c;
 259
 260         ctx = uci_alloc_context();
 261         if (!ctx) {
 262                 fprintf(stderr, "Out of memory\n");
 263                 return 1;
 264         }
 265
 266         while((c = getopt(argc, argv, "sS")) != -1) {
 267                 switch(c) {
 268                         case 'f':
 269                                 input = fopen(optarg, "r");
 270                                 if (!input) {
 271                                         perror("uci");
 272                                         return 1;
 273                                 }
 274                                 break;
 275                         case 'm':
 276                                 flags |= CLI_FLAG_MERGE;
 277                                 break;
 278                         case 's':
 279                                 ctx->flags |= UCI_FLAG_STRICT;
 280                                 break;
 281                         case 'S':
 282                                 ctx->flags &= ~UCI_FLAG_STRICT;
 283                                 ctx->flags |= UCI_FLAG_PERROR;
 284                                 break;
 285                         default:
 286                                 uci_usage(argc, argv);
 287                                 break;
 288                 }
 289         }
 290         if (optind > 1)
 291                 argv[optind - 1] = argv[0];
 292         argv += optind - 1;
 293         argc -= optind - 1;
 294
 295         if (argc < 2)
 296                 uci_usage(argc, argv);
 297         ret = uci_cmd(argc - 1, argv + 1);
 298         if (input != stdin)
 299                 fclose(input);
 300         if (ret == 255)
 301                 uci_usage(argc, argv);
 302
 303         uci_free_context(ctx);
 304
 305         return ret;
 306 }