ucimap-example.c

   1 /*
   2  * ucimap-example - sample code for the ucimap library
   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 <ucimap.h>
  19
  20 struct list_head ifs;
  21
  22 struct uci_network {
  23         struct ucimap_section_data map;
  24         struct list_head list;
  25         struct list_head alias;
  26
  27         const char *name;
  28         const char *proto;
  29         const char *ifname;
  30         unsigned char ipaddr[4];
  31         int test;
  32         bool enabled;
  33         struct ucimap_list *aliases;
  34 };
  35
  36 struct uci_alias {
  37         struct ucimap_section_data map;
  38         struct list_head list;
  39
  40         const char *name;
  41         struct uci_network *interface;
  42 };
  43
  44 static int
  45 network_parse_ip(void *section, struct uci_optmap *om, union ucimap_data *data, const char *str)
  46 {
  47         unsigned char *target = (unsigned char *) data->s;
  48         int tmp[4];
  49         int i;
  50
  51         if (sscanf(str, "%d.%d.%d.%d", &tmp[0], &tmp[1], &tmp[2], &tmp[3]) != 4)
  52                 return -1;
  53
  54         for (i = 0; i < 4; i++)
  55                 target[i] = (char) tmp[i];
  56
  57         return 0;
  58 }
  59
  60 static int
  61 network_format_ip(void *sction, struct uci_optmap *om, union ucimap_data *data, char **str)
  62 {
  63         static char buf[16];
  64         unsigned char *ip = (unsigned char *) data->s;
  65
  66         sprintf(buf, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
  67         *str = buf;
  68
  69         return 0;
  70 }
  71
  72 static int
  73 network_init_interface(struct uci_map *map, void *section, struct uci_section *s)
  74 {
  75         struct uci_network *net = section;
  76
  77         INIT_LIST_HEAD(&net->list);
  78         INIT_LIST_HEAD(&net->alias);
  79         net->name = s->e.name;
  80         net->test = -1;
  81         return 0;
  82 }
  83
  84 static int
  85 network_init_alias(struct uci_map *map, void *section, struct uci_section *s)
  86 {
  87         struct uci_alias *alias = section;
  88
  89         INIT_LIST_HEAD(&alias->list);
  90         alias->name = s->e.name;
  91         return 0;
  92 }
  93
  94 static int
  95 network_add_interface(struct uci_map *map, void *section)
  96 {
  97         struct uci_network *net = section;
  98
  99         list_add(&net->list, &ifs);
 100
 101         return 0;
 102 }
 103
 104 static int
 105 network_add_alias(struct uci_map *map, void *section)
 106 {
 107         struct uci_alias *a = section;
 108
 109         if (a->interface)
 110                 list_add(&a->list, &a->interface->alias);
 111
 112         return 0;
 113 }
 114
 115 static struct ucimap_section_data *
 116 network_allocate(struct uci_map *map, struct uci_sectionmap *sm, struct uci_section *s)
 117 {
 118         struct uci_network *p = malloc(sizeof(struct uci_network));
 119         memset(p, 0, sizeof(struct uci_network));
 120         return &p->map;
 121 }
 122
 123 struct my_optmap {
 124         struct uci_optmap map;
 125         int test;
 126 };
 127
 128 static struct uci_sectionmap network_interface;
 129 static struct uci_sectionmap network_alias;
 130
 131 static struct my_optmap network_interface_options[] = {
 132         {
 133                 .map = {
 134                         UCIMAP_OPTION(struct uci_network, proto),
 135                         .type = UCIMAP_STRING,
 136                         .name = "proto",
 137                         .data.s.maxlen = 32,
 138                 }
 139         },
 140         {
 141                 .map = {
 142                         UCIMAP_OPTION(struct uci_network, ifname),
 143                         .type = UCIMAP_STRING,
 144                         .name = "ifname"
 145                 }
 146         },
 147         {
 148                 .map = {
 149                         UCIMAP_OPTION(struct uci_network, ipaddr),
 150                         .type = UCIMAP_CUSTOM,
 151                         .name = "ipaddr",
 152                         .parse = network_parse_ip,
 153                         .format = network_format_ip,
 154                 }
 155         },
 156         {
 157                 .map = {
 158                         UCIMAP_OPTION(struct uci_network, enabled),
 159                         .type = UCIMAP_BOOL,
 160                         .name = "enabled",
 161                 }
 162         },
 163         {
 164                 .map = {
 165                         UCIMAP_OPTION(struct uci_network, test),
 166                         .type = UCIMAP_INT,
 167                         .name = "test"
 168                 }
 169         },
 170         {
 171                 .map = {
 172                         UCIMAP_OPTION(struct uci_network, aliases),
 173                         .type = UCIMAP_LIST | UCIMAP_SECTION,
 174                         .data.sm = &network_alias
 175                 }
 176         }
 177 };
 178
 179 static struct uci_sectionmap network_interface = {
 180         UCIMAP_SECTION(struct uci_network, map),
 181         .type = "interface",
 182         .alloc = network_allocate,
 183         .init = network_init_interface,
 184         .add = network_add_interface,
 185         .options = &network_interface_options[0].map,
 186         .n_options = ARRAY_SIZE(network_interface_options),
 187         .options_size = sizeof(struct my_optmap)
 188 };
 189
 190 static struct uci_optmap network_alias_options[] = {
 191         {
 192                 UCIMAP_OPTION(struct uci_alias, interface),
 193                 .type = UCIMAP_SECTION,
 194                 .data.sm = &network_interface
 195         }
 196 };
 197
 198 static struct uci_sectionmap network_alias = {
 199         UCIMAP_SECTION(struct uci_alias, map),
 200         .type = "alias",
 201         .options = network_alias_options,
 202         .init = network_init_alias,
 203         .add = network_add_alias,
 204         .n_options = ARRAY_SIZE(network_alias_options),
 205 };
 206
 207 static struct uci_sectionmap *network_smap[] = {
 208         &network_interface,
 209         &network_alias,
 210 };
 211
 212 static struct uci_map network_map = {
 213         .sections = network_smap,
 214         .n_sections = ARRAY_SIZE(network_smap),
 215 };
 216
 217
 218 int main(int argc, char **argv)
 219 {
 220         struct uci_context *ctx;
 221         struct uci_package *pkg;
 222         struct list_head *p;
 223         struct uci_network *net;
 224         struct uci_alias *alias;
 225         int i;
 226
 227         INIT_LIST_HEAD(&ifs);
 228         ctx = uci_alloc_context();
 229         ucimap_init(&network_map);
 230
 231         uci_set_confdir(ctx, "./test/config");
 232         uci_load(ctx, "network", &pkg);
 233
 234         ucimap_parse(&network_map, pkg);
 235
 236         list_for_each(p, &ifs) {
 237                 net = list_entry(p, struct uci_network, list);
 238                 printf("New network section '%s'\n"
 239                         "       type: %s\n"
 240                         "       ifname: %s\n"
 241                         "       ipaddr: %d.%d.%d.%d\n"
 242                         "       test: %d\n"
 243                         "       enabled: %s\n",
 244                         net->name,
 245                         net->proto,
 246                         net->ifname,
 247                         net->ipaddr[0], net->ipaddr[1],
 248                         net->ipaddr[2], net->ipaddr[3],
 249                         net->test,
 250                         (net->enabled ? "on" : "off"));
 251
 252                 for (i = 0; i < net->aliases->n_items; i++) {
 253                         alias = net->aliases->item[i].section;
 254                         printf("New alias: %s\n", alias->name);
 255                 }
 256 #if 0
 257                 memcpy(net->ipaddr, "\x01\x03\x04\x05", 4);
 258                 ucimap_set_changed(&net->map, &net->ipaddr);
 259                 ucimap_store_section(&network_map, pkg, &net->map);
 260                 uci_save(ctx, pkg);
 261 #endif
 262         }
 263
 264
 265         ucimap_cleanup(&network_map);
 266         uci_free_context(ctx);
 267
 268         return 0;
 269 }