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ucimap-example.c
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ucimap-example.c
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/*
* ucimap-example - sample code for the ucimap library
* Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <strings.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <ucimap.h>
#include "list.h"
struct list_head ifs;
struct uci_network {
struct ucimap_section_data map;
struct list_head list;
struct list_head alias;
const char *name;
const char *proto;
const char *ifname;
unsigned char *ipaddr;
int test;
bool enabled;
struct ucimap_list *aliases;
};
struct uci_alias {
struct ucimap_section_data map;
struct list_head list;
const char *name;
struct uci_network *interface;
};
static int
network_parse_ip(void *section, struct uci_optmap *om, union ucimap_data *data, const char *str)
{
unsigned char *target;
int tmp[4];
int i;
if (sscanf(str, "%d.%d.%d.%d", &tmp[0], &tmp[1], &tmp[2], &tmp[3]) != 4)
return -1;
target = malloc(4);
if (!target)
return -1;
data->ptr = target;
for (i = 0; i < 4; i++)
target[i] = (char) tmp[i];
return 0;
}
static int
network_format_ip(void *section, struct uci_optmap *om, union ucimap_data *data, char **str)
{
static char buf[16];
unsigned char *ip = (unsigned char *) data->ptr;
if (ip) {
sprintf(buf, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
*str = buf;
} else {
*str = NULL;
}
return 0;
}
static void
network_free_ip(void *section, struct uci_optmap *om, void *ptr)
{
free(ptr);
}
static int
network_init_interface(struct uci_map *map, void *section, struct uci_section *s)
{
struct uci_network *net = section;
INIT_LIST_HEAD(&net->list);
INIT_LIST_HEAD(&net->alias);
net->name = s->e.name;
net->test = -1;
return 0;
}
static int
network_init_alias(struct uci_map *map, void *section, struct uci_section *s)
{
struct uci_alias *alias = section;
INIT_LIST_HEAD(&alias->list);
alias->name = s->e.name;
return 0;
}
static int
network_add_interface(struct uci_map *map, void *section)
{
struct uci_network *net = section;
list_add_tail(&net->list, &ifs);
return 0;
}
static int
network_add_alias(struct uci_map *map, void *section)
{
struct uci_alias *a = section;
if (a->interface)
list_add_tail(&a->list, &a->interface->alias);
return 0;
}
static struct ucimap_section_data *
network_allocate(struct uci_map *map, struct uci_sectionmap *sm, struct uci_section *s)
{
struct uci_network *p = malloc(sizeof(struct uci_network));
memset(p, 0, sizeof(struct uci_network));
return &p->map;
}
struct my_optmap {
struct uci_optmap map;
int test;
};
static struct uci_sectionmap network_interface;
static struct uci_sectionmap network_alias;
static struct my_optmap network_interface_options[] = {
{
.map = {
UCIMAP_OPTION(struct uci_network, proto),
.type = UCIMAP_STRING,
.name = "proto",
.data.s.maxlen = 32,
}
},
{
.map = {
UCIMAP_OPTION(struct uci_network, ifname),
.type = UCIMAP_STRING,
.name = "ifname"
}
},
{
.map = {
UCIMAP_OPTION(struct uci_network, ipaddr),
.type = UCIMAP_CUSTOM,
.name = "ipaddr",
.parse = network_parse_ip,
.format = network_format_ip,
.free = network_free_ip,
}
},
{
.map = {
UCIMAP_OPTION(struct uci_network, enabled),
.type = UCIMAP_BOOL,
.name = "enabled",
}
},
{
.map = {
UCIMAP_OPTION(struct uci_network, test),
.type = UCIMAP_INT,
.name = "test"
}
},
{
.map = {
UCIMAP_OPTION(struct uci_network, aliases),
.type = UCIMAP_LIST | UCIMAP_SECTION | UCIMAP_LIST_AUTO,
.data.sm = &network_alias
}
}
};
static struct uci_sectionmap network_interface = {
UCIMAP_SECTION(struct uci_network, map),
.type = "interface",
.alloc = network_allocate,
.init = network_init_interface,
.add = network_add_interface,
.options = &network_interface_options[0].map,
.n_options = ARRAY_SIZE(network_interface_options),
.options_size = sizeof(struct my_optmap)
};
static struct uci_optmap network_alias_options[] = {
{
UCIMAP_OPTION(struct uci_alias, interface),
.type = UCIMAP_SECTION,
.data.sm = &network_interface
}
};
static struct uci_sectionmap network_alias = {
UCIMAP_SECTION(struct uci_alias, map),
.type = "alias",
.options = network_alias_options,
.init = network_init_alias,
.add = network_add_alias,
.n_options = ARRAY_SIZE(network_alias_options),
};
static struct uci_sectionmap *network_smap[] = {
&network_interface,
&network_alias,
};
static struct uci_map network_map = {
.sections = network_smap,
.n_sections = ARRAY_SIZE(network_smap),
};
int main(int argc, char **argv)
{
struct uci_context *ctx;
struct uci_package *pkg;
struct list_head *p;
struct uci_network *net;
struct uci_alias *alias;
bool set = false;
int i;
INIT_LIST_HEAD(&ifs);
ctx = uci_alloc_context();
ucimap_init(&network_map);
if ((argc >= 2) && !strcmp(argv[1], "-s")) {
uci_set_savedir(ctx, "./test/save");
set = true;
}
uci_set_confdir(ctx, "./test/config");
uci_load(ctx, "network", &pkg);
ucimap_parse(&network_map, pkg);
list_for_each(p, &ifs) {
const unsigned char *ipaddr;
int n_aliases = 0;
net = list_entry(p, struct uci_network, list);
ipaddr = net->ipaddr;
if (!ipaddr)
ipaddr = (const unsigned char *) "\x00\x00\x00\x00";
printf("New network section '%s'\n"
" type: %s\n"
" ifname: %s\n"
" ipaddr: %d.%d.%d.%d\n"
" test: %d\n"
" enabled: %s\n",
net->name,
net->proto,
net->ifname,
ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3],
net->test,
(net->enabled ? "on" : "off"));
if (net->aliases->n_items > 0) {
printf("Configured aliases:");
for (i = 0; i < net->aliases->n_items; i++) {
alias = net->aliases->item[i].ptr;
printf(" %s", alias->name);
}
printf("\n");
}
list_for_each_entry(alias, &net->alias, list) {
n_aliases++;
for (i = 0; i < net->aliases->n_items; i++) {
if (alias == net->aliases->item[i].ptr)
goto next_alias;
}
printf("New alias: %s\n", alias->name);
next_alias:
continue;
}
if (set && !strcmp(net->name, "lan")) {
ucimap_free_item(&net->map, &net->ipaddr);
ucimap_set_changed(&net->map, &net->ipaddr);
ucimap_resize_list(&net->map, &net->aliases, n_aliases);
net->aliases->n_items = 0;
list_for_each_entry(alias, &net->alias, list) {
net->aliases->item[net->aliases->n_items++].ptr = alias;
}
ucimap_set_changed(&net->map, &net->aliases);
ucimap_store_section(&network_map, pkg, &net->map);
uci_save(ctx, pkg);
}
}
ucimap_cleanup(&network_map);
uci_free_context(ctx);
return 0;
}