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_format_ip(void *sction, struct uci_optmap *om, union ucimap_data *data, char **str)
  63 {
  64         static char buf[16];
  65         unsigned char *ip = (unsigned char *) data->s;
  66
  67         sprintf(buf, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
  68         *str = buf;
  69
  70         return 0;
  71 }
  72
  73 static int
  74 network_init_interface(struct uci_map *map, void *section, struct uci_section *s)
  75 {
  76         struct uci_network *net = section;
  77
  78         INIT_LIST_HEAD(&net->list);
  79         INIT_LIST_HEAD(&net->alias);
  80         net->name = s->e.name;
  81         net->test = -1;
  82         return 0;
  83 }
  84
  85 static int
  86 network_init_alias(struct uci_map *map, void *section, struct uci_section *s)
  87 {
  88         struct uci_alias *alias = section;
  89
  90         INIT_LIST_HEAD(&alias->list);
  91         alias->name = s->e.name;
  92         return 0;
  93 }
  94
  95 static int
  96 network_add_interface(struct uci_map *map, void *section)
  97 {
  98         struct uci_network *net = section;
  99
 100         list_add(&net->list, &ifs);
 101
 102         return 0;
 103 }
 104
 105 static int
 106 network_add_alias(struct uci_map *map, void *section)
 107 {
 108         struct uci_alias *a = section;
 109
 110         if (a->interface)
 111                 list_add(&a->list, &a->interface->alias);
 112
 113         return 0;
 114 }
 115
 116 static struct ucimap_section_data *
 117 network_allocate(struct uci_map *map, struct uci_sectionmap *sm, struct uci_section *s)
 118 {
 119         struct uci_network *p = malloc(sizeof(struct uci_network));
 120         memset(p, 0, sizeof(struct uci_network));
 121         return &p->map;
 122 }
 123
 124 struct my_optmap {
 125         struct uci_optmap map;
 126         int test;
 127 };
 128
 129 static struct uci_sectionmap network_interface;
 130 static struct uci_sectionmap network_alias;
 131
 132 static struct my_optmap network_interface_options[] = {
 133         {
 134                 .map = {
 135                         UCIMAP_OPTION(struct uci_network, proto),
 136                         .type = UCIMAP_STRING,
 137                         .name = "proto",
 138                         .data.s.maxlen = 32,
 139                 }
 140         },
 141         {
 142                 .map = {
 143                         UCIMAP_OPTION(struct uci_network, ifname),
 144                         .type = UCIMAP_STRING,
 145                         .name = "ifname"
 146                 }
 147         },
 148         {
 149                 .map = {
 150                         UCIMAP_OPTION(struct uci_network, ipaddr),
 151                         .type = UCIMAP_CUSTOM,
 152                         .name = "ipaddr",
 153                         .parse = network_parse_ip,
 154                         .format = network_format_ip,
 155                 }
 156         },
 157         {
 158                 .map = {
 159                         UCIMAP_OPTION(struct uci_network, enabled),
 160                         .type = UCIMAP_BOOL,
 161                         .name = "enabled",
 162                 }
 163         },
 164         {
 165                 .map = {
 166                         UCIMAP_OPTION(struct uci_network, test),
 167                         .type = UCIMAP_INT,
 168                         .name = "test"
 169                 }
 170         },
 171         {
 172                 .map = {
 173                         UCIMAP_OPTION(struct uci_network, aliases),
 174                         .type = UCIMAP_LIST | UCIMAP_SECTION,
 175                         .data.sm = &network_alias
 176                 }
 177         }
 178 };
 179
 180 static struct uci_sectionmap network_interface = {
 181         UCIMAP_SECTION(struct uci_network, map),
 182         .type = "interface",
 183         .alloc = network_allocate,
 184         .init = network_init_interface,
 185         .add = network_add_interface,
 186         .options = &network_interface_options[0].map,
 187         .n_options = ARRAY_SIZE(network_interface_options),
 188         .options_size = sizeof(struct my_optmap)
 189 };
 190
 191 static struct uci_optmap network_alias_options[] = {
 192         {
 193                 UCIMAP_OPTION(struct uci_alias, interface),
 194                 .type = UCIMAP_SECTION,
 195                 .data.sm = &network_interface
 196         }
 197 };
 198
 199 static struct uci_sectionmap network_alias = {
 200         UCIMAP_SECTION(struct uci_alias, map),
 201         .type = "alias",
 202         .options = network_alias_options,
 203         .init = network_init_alias,
 204         .add = network_add_alias,
 205         .n_options = ARRAY_SIZE(network_alias_options),
 206 };
 207
 208 static struct uci_sectionmap *network_smap[] = {
 209         &network_interface,
 210         &network_alias,
 211 };
 212
 213 static struct uci_map network_map = {
 214         .sections = network_smap,
 215         .n_sections = ARRAY_SIZE(network_smap),
 216 };
 217
 218
 219 int main(int argc, char **argv)
 220 {
 221         struct uci_context *ctx;
 222         struct uci_package *pkg;
 223         struct list_head *p, *p2;
 224         struct uci_network *net;
 225         struct uci_alias *alias;
 226         int i;
 227
 228         INIT_LIST_HEAD(&ifs);
 229         ctx = uci_alloc_context();
 230         ucimap_init(&network_map);
 231
 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 done:
 266         ucimap_cleanup(&network_map);
 267         uci_free_context(ctx);
 268
 269         return 0;
 270 }