5 * Copyright (C) 2007-2009 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
36 struct connman_resolver *resolver;
42 static GSList *entry_list = NULL;
43 static GSList *resolver_list = NULL;
45 static void remove_entries(GSList *entries)
49 for (list = entries; list; list = list->next) {
50 struct entry_data *entry = list->data;
51 struct connman_resolver *resolver = entry->resolver;
53 entry_list = g_slist_remove(entry_list, entry);
55 if (resolver && resolver->remove)
56 resolver->remove(entry->interface, entry->domain,
59 g_free(entry->server);
60 g_free(entry->domain);
61 g_free(entry->interface);
65 g_slist_free(entries);
68 static gint compare_priority(gconstpointer a, gconstpointer b)
70 const struct connman_resolver *resolver1 = a;
71 const struct connman_resolver *resolver2 = b;
73 return resolver2->priority - resolver1->priority;
77 * connman_resolver_register:
78 * @resolver: resolver module
80 * Register a new resolver module
82 * Returns: %0 on success
84 int connman_resolver_register(struct connman_resolver *resolver)
88 DBG("resolver %p name %s", resolver, resolver->name);
90 resolver_list = g_slist_insert_sorted(resolver_list, resolver,
93 if (resolver->append == NULL)
96 for (list = entry_list; list; list = list->next) {
97 struct entry_data *entry = list->data;
102 if (resolver->append(entry->interface, entry->domain,
104 entry->resolver = resolver;
111 * connman_resolver_unregister:
112 * @resolver: resolver module
114 * Remove a previously registered resolver module
116 void connman_resolver_unregister(struct connman_resolver *resolver)
118 GSList *list, *matches = NULL;
120 DBG("resolver %p name %s", resolver, resolver->name);
122 resolver_list = g_slist_remove(resolver_list, resolver);
124 for (list = entry_list; list; list = list->next) {
125 struct entry_data *entry = list->data;
127 if (entry->resolver != resolver)
130 matches = g_slist_append(matches, entry);
133 remove_entries(matches);
137 * connman_resolver_append:
138 * @interface: network interface
139 * @domain: domain limitation
140 * @server: server address
142 * Append resolver server address to current list
144 int connman_resolver_append(const char *interface, const char *domain,
147 struct entry_data *entry;
150 DBG("interface %s domain %s server %s", interface, domain, server);
155 entry = g_try_new0(struct entry_data, 1);
159 entry->interface = g_strdup(interface);
160 entry->domain = g_strdup(domain);
161 entry->server = g_strdup(server);
163 entry_list = g_slist_append(entry_list, entry);
165 for (list = resolver_list; list; list = list->next) {
166 struct connman_resolver *resolver = list->data;
168 if (resolver->append == NULL)
171 if (resolver->append(interface, domain, server) == 0) {
172 entry->resolver = resolver;
181 * connman_resolver_remove_all:
182 * @interface: network interface
184 * Remove all resolver server address for the specified interface
186 int connman_resolver_remove_all(const char *interface)
188 GSList *list, *matches = NULL;
190 DBG("interface %s", interface);
192 for (list = entry_list; list; list = list->next) {
193 struct entry_data *entry = list->data;
195 if (g_str_equal(entry->interface, interface) == FALSE)
198 matches = g_slist_append(matches, entry);
201 remove_entries(matches);
206 static int selftest_append(const char *interface, const char *domain,
209 DBG("server %s", server);
214 static int selftest_remove(const char *interface, const char *domain,
217 DBG("server %s", server);
222 static struct connman_resolver selftest_resolver = {
224 .priority = CONNMAN_RESOLVER_PRIORITY_HIGH + 42,
225 .append = selftest_append,
226 .remove = selftest_remove,
229 int __connman_resolver_selftest(void)
231 connman_resolver_append("wlan0", "lwn.net", "192.168.0.1");
233 connman_resolver_register(&selftest_resolver);
235 connman_resolver_append("eth0", "moblin.org", "192.168.42.1");
236 connman_resolver_append("wlan0", "lwn.net", "192.168.0.2");
238 connman_resolver_remove_all("wlan0");
240 connman_resolver_unregister(&selftest_resolver);
245 static int resolvfile_append(const char *interface, const char *domain,
251 DBG("interface %s server %s", interface, server);
253 fd = open("/etc/resolv.conf", O_RDWR | O_CREAT,
254 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
258 err = ftruncate(fd, 0);
260 cmd = g_strdup_printf("# Generated by Connection Manager\n"
262 "nameserver %s\n", server);
264 len = write(fd, cmd, strlen(cmd));
273 static int resolvfile_remove(const char *interface, const char *domain,
276 DBG("interface %s server %s", interface, server);
281 static struct connman_resolver resolvfile_resolver = {
282 .name = "resolvfile",
283 .priority = CONNMAN_RESOLVER_PRIORITY_LOW,
284 .append = resolvfile_append,
285 .remove = resolvfile_remove,
288 int __connman_resolver_init(void)
292 return connman_resolver_register(&resolvfile_resolver);
295 void __connman_resolver_cleanup(void)
299 connman_resolver_unregister(&resolvfile_resolver);