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         struct uci_network *net = section;
  48         unsigned char *target = (unsigned char *) data->s;
  49         unsigned int tmp[4];
  50         int i;
  51
  52         if (sscanf(str, "%d.%d.%d.%d", &tmp[0], &tmp[1], &tmp[2], &tmp[3]) != 4)
  53                 return -1;
  54
  55         for (i = 0; i < 4; i++)
  56                 target[i] = (char) tmp[i];
  57
  58         return 0;
  59 }
  60
  61 static int
  62 network_init_interface(struct uci_map *map, void *section, struct uci_section *s)
  63 {
  64         struct uci_network *net = section;
  65
  66         INIT_LIST_HEAD(&net->list);
  67         INIT_LIST_HEAD(&net->alias);
  68         net->name = s->e.name;
  69         net->test = -1;
  70         return 0;
  71 }
  72
  73 static int
  74 network_init_alias(struct uci_map *map, void *section, struct uci_section *s)
  75 {
  76         struct uci_alias *alias = section;
  77
  78         INIT_LIST_HEAD(&alias->list);
  79         alias->name = s->e.name;
  80         return 0;
  81 }
  82
  83 static int
  84 network_add_interface(struct uci_map *map, void *section)
  85 {
  86         struct uci_network *net = section;
  87
  88         list_add(&net->list, &ifs);
  89
  90         return 0;
  91 }
  92
  93 static int
  94 network_add_alias(struct uci_map *map, void *section)
  95 {
  96         struct uci_alias *a = section;
  97
  98         if (a->interface)
  99                 list_add(&a->list, &a->interface->alias);
 100
 101         return 0;
 102 }
 103
 104 static struct ucimap_section_data *
 105 network_allocate(struct uci_map *map, struct uci_sectionmap *sm, struct uci_section *s)
 106 {
 107         struct uci_network *p = malloc(sizeof(struct uci_network));
 108         memset(p, 0, sizeof(struct uci_network));
 109         return &p->map;
 110 }
 111
 112 struct my_optmap {
 113         struct uci_optmap map;
 114         int test;
 115 };
 116
 117 static struct uci_sectionmap network_interface;
 118 static struct uci_sectionmap network_alias;
 119
 120 static struct my_optmap network_interface_options[] = {
 121         {
 122                 .map = {
 123                         UCIMAP_OPTION(struct uci_network, proto),
 124                         .type = UCIMAP_STRING,
 125                         .name = "proto",
 126                         .data.s.maxlen = 32,
 127                 }
 128         },
 129         {
 130                 .map = {
 131                         UCIMAP_OPTION(struct uci_network, ifname),
 132                         .type = UCIMAP_STRING,
 133                         .name = "ifname"
 134                 }
 135         },
 136         {
 137                 .map = {
 138                         UCIMAP_OPTION(struct uci_network, ipaddr),
 139                         .type = UCIMAP_CUSTOM,
 140                         .name = "ipaddr",
 141                         .parse = network_parse_ip,
 142                 }
 143         },
 144         {
 145                 .map = {
 146                         UCIMAP_OPTION(struct uci_network, enabled),
 147                         .type = UCIMAP_BOOL,
 148                         .name = "enabled",
 149                 }
 150         },
 151         {
 152                 .map = {
 153                         UCIMAP_OPTION(struct uci_network, test),
 154                         .type = UCIMAP_INT,
 155                         .name = "test"
 156                 }
 157         },
 158         {
 159                 .map = {
 160                         UCIMAP_OPTION(struct uci_network, aliases),
 161                         .type = UCIMAP_LIST | UCIMAP_SECTION,
 162                         .data.sm = &network_alias
 163                 }
 164         }
 165 };
 166
 167 static struct uci_sectionmap network_interface = {
 168         UCIMAP_SECTION(struct uci_network, map),
 169         .type = "interface",
 170         .alloc = network_allocate,
 171         .init = network_init_interface,
 172         .add = network_add_interface,
 173         .options = &network_interface_options[0].map,
 174         .n_options = ARRAY_SIZE(network_interface_options),
 175         .options_size = sizeof(struct my_optmap)
 176 };
 177
 178 static struct uci_optmap network_alias_options[] = {
 179         {
 180                 UCIMAP_OPTION(struct uci_alias, interface),
 181                 .type = UCIMAP_SECTION,
 182                 .data.sm = &network_interface
 183         }
 184 };
 185
 186 static struct uci_sectionmap network_alias = {
 187         UCIMAP_SECTION(struct uci_alias, map),
 188         .type = "alias",
 189         .options = network_alias_options,
 190         .init = network_init_alias,
 191         .add = network_add_alias,
 192         .n_options = ARRAY_SIZE(network_alias_options),
 193 };
 194
 195 static struct uci_sectionmap *network_smap[] = {
 196         &network_interface,
 197         &network_alias,
 198 };
 199
 200 static struct uci_map network_map = {
 201         .sections = network_smap,
 202         .n_sections = ARRAY_SIZE(network_smap),
 203 };
 204
 205
 206 int main(int argc, char **argv)
 207 {
 208         struct uci_context *ctx;
 209         struct uci_package *pkg;
 210         struct list_head *p, *p2;
 211         struct uci_network *net;
 212         struct uci_alias *alias;
 213         int i;
 214
 215         INIT_LIST_HEAD(&ifs);
 216         ctx = uci_alloc_context();
 217         ucimap_init(&network_map);
 218
 219         uci_load(ctx, "network", &pkg);
 220
 221         ucimap_parse(&network_map, pkg);
 222
 223         list_for_each(p, &ifs) {
 224                 net = list_entry(p, struct uci_network, list);
 225                 printf("New network section '%s'\n"
 226                         "       type: %s\n"
 227                         "       ifname: %s\n"
 228                         "       ipaddr: %d.%d.%d.%d\n"
 229                         "       test: %d\n"
 230                         "       enabled: %s\n",
 231                         net->name,
 232                         net->proto,
 233                         net->ifname,
 234                         net->ipaddr[0], net->ipaddr[1],
 235                         net->ipaddr[2], net->ipaddr[3],
 236                         net->test,
 237                         (net->enabled ? "on" : "off"));
 238
 239                 for (i = 0; i < net->aliases->n_items; i++) {
 240                         alias = net->aliases->item[i].section;
 241                         printf("New alias: %s\n", alias->name);
 242                 }
 243 #if 0
 244                 net->ipaddr = "2.3.4.5";
 245                 ucimap_set_changed(net, &net->ipaddr);
 246                 ucimap_store_section(&network_map, pkg, net);
 247                 uci_save(ctx, pkg);
 248 #endif
 249         }
 250
 251
 252 done:
 253         ucimap_cleanup(&network_map);
 254         uci_free_context(ctx);
 255
 256         return 0;
 257 }