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/*
*
* Connection Manager
*
* Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
*
* 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.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "connman.h"
struct entry_data {
struct connman_resolver *resolver;
char *interface;
char *domain;
char *server;
};
static GSList *entry_list = NULL;
static GSList *resolver_list = NULL;
static void remove_entries(GSList *entries)
{
GSList *list;
for (list = entries; list; list = list->next) {
struct entry_data *entry = list->data;
struct connman_resolver *resolver = entry->resolver;
entry_list = g_slist_remove(entry_list, entry);
if (resolver->remove)
resolver->remove(entry->interface, entry->domain,
entry->server);
g_free(entry->server);
g_free(entry->domain);
g_free(entry->interface);
g_free(entry);
}
g_slist_free(entries);
}
static gint compare_priority(gconstpointer a, gconstpointer b)
{
const struct connman_resolver *resolver1 = a;
const struct connman_resolver *resolver2 = b;
return resolver2->priority - resolver1->priority;
}
/**
* connman_resolver_register:
* @resolver: resolver module
*
* Register a new resolver module
*
* Returns: %0 on success
*/
int connman_resolver_register(struct connman_resolver *resolver)
{
GSList *list;
DBG("resolver %p name %s", resolver, resolver->name);
resolver_list = g_slist_insert_sorted(resolver_list, resolver,
compare_priority);
if (resolver->append == NULL)
return 0;
for (list = entry_list; list; list = list->next) {
struct entry_data *entry = list->data;
if (entry->resolver)
continue;
if (resolver->append(entry->interface, entry->domain,
entry->server) == 0)
entry->resolver = resolver;
}
return 0;
}
/**
* connman_resolver_unregister:
* @resolver: resolver module
*
* Remove a previously registered resolver module
*/
void connman_resolver_unregister(struct connman_resolver *resolver)
{
GSList *list, *matches = NULL;
DBG("resolver %p name %s", resolver, resolver->name);
resolver_list = g_slist_remove(resolver_list, resolver);
for (list = entry_list; list; list = list->next) {
struct entry_data *entry = list->data;
if (entry->resolver != resolver)
continue;
matches = g_slist_append(matches, entry);
}
remove_entries(matches);
}
/**
* connman_resolver_append:
* @interface: network interface
* @domain: domain limitation
* @server: server address
*
* Append resolver server address to current list
*/
int connman_resolver_append(const char *interface, const char *domain,
const char *server)
{
struct entry_data *entry;
GSList *list;
DBG("interface %s domain %s server %s", interface, domain, server);
entry = g_try_new0(struct entry_data, 1);
if (entry == NULL)
return -ENOMEM;
entry->interface = g_strdup(interface);
entry->domain = g_strdup(domain);
entry->server = g_strdup(server);
entry_list = g_slist_append(entry_list, entry);
for (list = resolver_list; list; list = list->next) {
struct connman_resolver *resolver = list->data;
if (resolver->append == NULL)
continue;
if (resolver->append(interface, domain, server) == 0) {
entry->resolver = resolver;
break;
}
}
return 0;
}
/**
* connman_resolver_remove_all:
* @interface: network interface
*
* Remove all resolver server address for the specified interface
*/
int connman_resolver_remove_all(const char *interface)
{
GSList *list, *matches = NULL;
DBG("interface %s", interface);
for (list = entry_list; list; list = list->next) {
struct entry_data *entry = list->data;
if (g_str_equal(entry->interface, interface) == FALSE)
continue;
matches = g_slist_append(matches, entry);
}
remove_entries(matches);
return 0;
}
static int selftest_append(const char *interface, const char *domain,
const char *server)
{
DBG("server %s", server);
return 0;
}
static int selftest_remove(const char *interface, const char *domain,
const char *server)
{
DBG("server %s", server);
return 0;
}
static struct connman_resolver selftest_resolver = {
.name = "selftest",
.priority = CONNMAN_RESOLVER_PRIORITY_HIGH + 42,
.append = selftest_append,
.remove = selftest_remove,
};
int __connman_resolver_selftest(void)
{
connman_resolver_append("wlan0", "lwn.net", "192.168.0.1");
connman_resolver_register(&selftest_resolver);
connman_resolver_append("eth0", "moblin.org", "192.168.42.1");
connman_resolver_append("wlan0", "lwn.net", "192.168.0.2");
connman_resolver_remove_all("wlan0");
connman_resolver_unregister(&selftest_resolver);
return 0;
}
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