libubox/ucix.c
2010-10-13 21:29:08 +02:00

176 lines
4.4 KiB
C

/*
* ucix
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
* Copyright (C) 2010 Steven Barth <steven@midlink.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <string.h>
#include <stdlib.h>
#include "ucix.h"
struct uci_ptr uci_ptr;
int ucix_get_ptr(struct uci_context *ctx, const char *p, const char *s, const char *o, const char *t)
{
memset(&uci_ptr, 0, sizeof(uci_ptr));
uci_ptr.package = p;
uci_ptr.section = s;
uci_ptr.option = o;
uci_ptr.value = t;
return uci_lookup_ptr(ctx, &uci_ptr, NULL, true);
}
struct uci_context* ucix_init(const char *config_file, int state)
{
struct uci_context *ctx = uci_alloc_context();
uci_set_confdir(ctx, "/etc/config");
if(state)
uci_set_savedir(ctx, "/var/state/");
else
uci_set_savedir(ctx, "/tmp/.uci/");
if(uci_load(ctx, config_file, NULL) != UCI_OK)
{
printf("%s/%s is missing or corrupt\n", ctx->confdir, config_file);
return NULL;
}
return ctx;
}
struct uci_context* ucix_init_path(const char *vpath, const char *config_file, int state)
{
struct uci_context *ctx;
char buf[256];
if(!vpath)
return ucix_init(config_file, state);
ctx = uci_alloc_context();
buf[255] = '\0';
snprintf(buf, 255, "%s%s", vpath, "/etc/config");
uci_set_confdir(ctx, buf);
snprintf(buf, 255, "%s%s", vpath, (state)?("/var/state"):("/tmp/.uci"));
uci_add_delta_path(ctx, buf);
if(uci_load(ctx, config_file, NULL) != UCI_OK)
{
printf("%s/%s is missing or corrupt\n", ctx->confdir, config_file);
return NULL;
}
return ctx;
}
int ucix_get_option_list(struct uci_context *ctx, const char *p,
const char *s, const char *o, struct list_head *l)
{
struct uci_element *e = NULL;
if(ucix_get_ptr(ctx, p, s, o, NULL))
return 1;
if (!(uci_ptr.flags & UCI_LOOKUP_COMPLETE))
return 1;
e = uci_ptr.last;
switch (e->type)
{
case UCI_TYPE_OPTION:
switch(uci_ptr.o->type) {
case UCI_TYPE_LIST:
uci_foreach_element(&uci_ptr.o->v.list, e)
{
struct ucilist *ul = malloc(sizeof(struct ucilist));
ul->val = strdup((e->name)?(e->name):(""));
list_add_tail(&ul->list, l);
}
break;
default:
break;
}
break;
default:
return 1;
}
return 0;
}
char* ucix_get_option(struct uci_context *ctx, const char *p, const char *s, const char *o)
{
struct uci_element *e = NULL;
const char *value = NULL;
if(ucix_get_ptr(ctx, p, s, o, NULL))
return NULL;
if (!(uci_ptr.flags & UCI_LOOKUP_COMPLETE))
return NULL;
e = uci_ptr.last;
switch (e->type)
{
case UCI_TYPE_SECTION:
value = uci_to_section(e)->type;
break;
case UCI_TYPE_OPTION:
switch(uci_ptr.o->type) {
case UCI_TYPE_STRING:
value = uci_ptr.o->v.string;
break;
default:
value = NULL;
break;
}
break;
default:
return 0;
}
return (value) ? (strdup(value)):(NULL);
}
void ucix_add_list(struct uci_context *ctx, const char *p, const char *s, const char *o, struct list_head *vals)
{
struct list_head *q;
list_for_each(q, vals)
{
struct ucilist *ul = container_of(q, struct ucilist, list);
if(ucix_get_ptr(ctx, p, s, o, (ul->val)?(ul->val):("")))
return;
uci_add_list(ctx, &uci_ptr);
}
}
void ucix_for_each_section_type(struct uci_context *ctx,
const char *p, const char *t,
void (*cb)(const char*, void*), void *priv)
{
struct uci_element *e;
if(ucix_get_ptr(ctx, p, NULL, NULL, NULL))
return;
uci_foreach_element(&uci_ptr.p->sections, e)
if (!strcmp(t, uci_to_section(e)->type))
cb(e->name, priv);
}
void ucix_for_each_section_option(struct uci_context *ctx,
const char *p, const char *s,
void (*cb)(const char*, const char*, void*), void *priv)
{
struct uci_element *e;
if(ucix_get_ptr(ctx, p, s, NULL, NULL))
return;
uci_foreach_element(&uci_ptr.s->options, e)
{
struct uci_option *o = uci_to_option(e);
cb(o->e.name, o->v.string, priv);
}
}