5 * Copyright (C) 2007-2010 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
30 #include <connman/ipconfig.h>
32 #include <gdhcp/gdhcp.h>
39 struct connman_network *network;
46 GDHCPClient *dhcp_client;
49 static GHashTable *network_table;
51 static void dhcp_free(struct connman_dhcp *dhcp)
53 g_strfreev(dhcp->nameservers);
54 g_free(dhcp->timeserver);
57 dhcp->nameservers = NULL;
58 dhcp->timeserver = NULL;
63 * dhcp_invalidate: Invalidate an existing DHCP lease
64 * @dhcp: pointer to the DHCP lease to invalidate.
65 * @callback: flag indicating whether or not to invoke the client callback
68 * Invalidates an existing DHCP lease, optionally invoking the client
69 * callback. The caller may wish to avoid the client callback invocation
70 * when the invocation of that callback might otherwise unnecessarily upset
71 * service state due to the IP configuration change implied by this
74 static void dhcp_invalidate(struct connman_dhcp *dhcp, connman_bool_t callback)
76 struct connman_service *service;
77 struct connman_ipconfig *ipconfig;
80 DBG("dhcp %p callback %u", dhcp, callback);
85 service = __connman_service_lookup_from_network(dhcp->network);
89 ipconfig = __connman_service_get_ip4config(service);
93 __connman_6to4_remove(ipconfig);
95 __connman_service_set_domainname(service, NULL);
96 __connman_service_set_pac(service, NULL);
97 __connman_service_timeserver_remove(service, dhcp->timeserver);
99 for (i = 0; dhcp->nameservers[i] != NULL; i++) {
100 __connman_service_nameserver_remove(service,
101 dhcp->nameservers[i]);
104 __connman_ipconfig_address_remove(ipconfig);
106 __connman_ipconfig_set_local(ipconfig, NULL);
107 __connman_ipconfig_set_broadcast(ipconfig, NULL);
108 __connman_ipconfig_set_gateway(ipconfig, NULL);
109 __connman_ipconfig_set_prefixlen(ipconfig, 0);
111 if (dhcp->callback != NULL && callback)
112 dhcp->callback(dhcp->network, FALSE);
117 static void dhcp_valid(struct connman_dhcp *dhcp)
119 if (dhcp->callback != NULL)
120 dhcp->callback(dhcp->network, TRUE);
123 static void no_lease_cb(GDHCPClient *dhcp_client, gpointer user_data)
125 struct connman_dhcp *dhcp = user_data;
127 DBG("No lease available");
129 dhcp_invalidate(dhcp, TRUE);
132 static void lease_lost_cb(GDHCPClient *dhcp_client, gpointer user_data)
134 struct connman_dhcp *dhcp = user_data;
138 dhcp_invalidate(dhcp, TRUE);
141 static void ipv4ll_lost_cb(GDHCPClient *dhcp_client, gpointer user_data)
143 struct connman_dhcp *dhcp = user_data;
147 dhcp_invalidate(dhcp, TRUE);
151 static gboolean compare_string_arrays(char **array_a, char **array_b)
155 if (array_a == NULL || array_b == NULL)
158 if (g_strv_length(array_a) != g_strv_length(array_b))
161 for (i = 0; array_a[i] != NULL &&
162 array_b[i] != NULL; i++) {
163 if (g_strcmp0(array_a[i], array_b[i]) != 0)
170 static void lease_available_cb(GDHCPClient *dhcp_client, gpointer user_data)
172 struct connman_dhcp *dhcp = user_data;
173 GList *list, *option = NULL;
174 char *address, *netmask = NULL, *gateway = NULL;
175 const char *c_address, *c_gateway;
176 char *domainname = NULL, *hostname = NULL;
177 char **nameservers, *timeserver = NULL, *pac = NULL;
179 struct connman_ipconfig *ipconfig;
180 struct connman_service *service;
181 unsigned char prefixlen, c_prefixlen;
185 DBG("Lease available");
187 service = __connman_service_lookup_from_network(dhcp->network);
188 if (service == NULL) {
189 connman_error("Can not lookup service");
193 ipconfig = __connman_service_get_ip4config(service);
194 if (ipconfig == NULL) {
195 connman_error("Could not lookup ipconfig");
199 c_address = __connman_ipconfig_get_local(ipconfig);
200 c_gateway = __connman_ipconfig_get_gateway(ipconfig);
201 c_prefixlen = __connman_ipconfig_get_prefixlen(ipconfig);
203 address = g_dhcp_client_get_address(dhcp_client);
205 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_SUBNET);
207 netmask = g_strdup(option->data);
209 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_ROUTER);
211 gateway = g_strdup(option->data);
213 prefixlen = __connman_ipconfig_netmask_prefix_len(netmask);
215 DBG("c_address %s", c_address);
217 if (address != NULL && c_address != NULL &&
218 g_strcmp0(address, c_address) != 0)
220 else if (gateway != NULL && c_gateway != NULL &&
221 g_strcmp0(gateway, c_gateway) != 0)
223 else if (prefixlen != c_prefixlen)
225 else if (c_address == NULL || c_gateway == NULL)
230 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DNS_SERVER);
231 for (ns_entries = 0, list = option; list; list = list->next)
233 nameservers = g_try_new0(char *, ns_entries + 1);
234 if (nameservers != NULL) {
235 for (i = 0, list = option; list; list = list->next, i++)
236 nameservers[i] = g_strdup(list->data);
237 nameservers[ns_entries] = NULL;
240 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DOMAIN_NAME);
242 domainname = g_strdup(option->data);
244 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_HOST_NAME);
246 hostname = g_strdup(option->data);
248 option = g_dhcp_client_get_option(dhcp_client, G_DHCP_NTP_SERVER);
250 timeserver = g_strdup(option->data);
252 option = g_dhcp_client_get_option(dhcp_client, 252);
254 pac = g_strdup(option->data);
256 connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_DHCP);
258 if (ip_change == TRUE) {
259 __connman_ipconfig_set_local(ipconfig, address);
260 __connman_ipconfig_set_prefixlen(ipconfig, prefixlen);
261 __connman_ipconfig_set_gateway(ipconfig, gateway);
264 if (compare_string_arrays(nameservers, dhcp->nameservers) == FALSE) {
265 if (dhcp->nameservers != NULL) {
266 for (i = 0; dhcp->nameservers[i] != NULL; i++) {
267 __connman_service_nameserver_remove(service,
268 dhcp->nameservers[i]);
270 g_strfreev(dhcp->nameservers);
273 dhcp->nameservers = nameservers;
275 for (i = 0; dhcp->nameservers[i] != NULL; i++) {
276 __connman_service_nameserver_append(service,
277 dhcp->nameservers[i]);
281 if (g_strcmp0(timeserver, dhcp->timeserver) != 0) {
282 if (dhcp->timeserver != NULL) {
283 __connman_service_timeserver_remove(service,
285 g_free(dhcp->timeserver);
288 dhcp->timeserver = timeserver;
290 if (dhcp->timeserver != NULL)
291 __connman_service_timeserver_append(service,
295 if (g_strcmp0(pac, dhcp->pac) != 0) {
299 __connman_service_set_pac(service, dhcp->pac);
302 __connman_service_set_domainname(service, domainname);
304 if (domainname != NULL)
305 __connman_utsname_set_domainname(domainname);
307 if (hostname != NULL)
308 __connman_utsname_set_hostname(hostname);
310 if (ip_change == TRUE)
313 __connman_6to4_probe(service);
322 static void ipv4ll_available_cb(GDHCPClient *dhcp_client, gpointer user_data)
324 struct connman_dhcp *dhcp = user_data;
325 char *address, *netmask;
326 struct connman_service *service;
327 struct connman_ipconfig *ipconfig;
328 unsigned char prefixlen;
330 DBG("IPV4LL available");
332 service = __connman_service_lookup_from_network(dhcp->network);
336 ipconfig = __connman_service_get_ip4config(service);
337 if (ipconfig == NULL)
340 address = g_dhcp_client_get_address(dhcp_client);
341 netmask = g_dhcp_client_get_netmask(dhcp_client);
343 prefixlen = __connman_ipconfig_netmask_prefix_len(netmask);
345 connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_DHCP);
346 __connman_ipconfig_set_local(ipconfig, address);
347 __connman_ipconfig_set_prefixlen(ipconfig, prefixlen);
348 __connman_ipconfig_set_gateway(ipconfig, NULL);
356 static void dhcp_debug(const char *str, void *data)
358 connman_info("%s: %s\n", (const char *) data, str);
361 static int dhcp_request(struct connman_dhcp *dhcp)
363 GDHCPClient *dhcp_client;
364 GDHCPClientError error;
365 const char *hostname;
368 DBG("dhcp %p", dhcp);
370 index = connman_network_get_index(dhcp->network);
372 dhcp_client = g_dhcp_client_new(G_DHCP_IPV4, index, &error);
373 if (error != G_DHCP_CLIENT_ERROR_NONE)
376 if (getenv("CONNMAN_DHCP_DEBUG"))
377 g_dhcp_client_set_debug(dhcp_client, dhcp_debug, "DHCP");
379 hostname = connman_utsname_get_hostname();
380 if (hostname != NULL)
381 g_dhcp_client_set_send(dhcp_client, G_DHCP_HOST_NAME, hostname);
383 g_dhcp_client_set_request(dhcp_client, G_DHCP_HOST_NAME);
384 g_dhcp_client_set_request(dhcp_client, G_DHCP_SUBNET);
385 g_dhcp_client_set_request(dhcp_client, G_DHCP_DNS_SERVER);
386 g_dhcp_client_set_request(dhcp_client, G_DHCP_DOMAIN_NAME);
387 g_dhcp_client_set_request(dhcp_client, G_DHCP_NTP_SERVER);
388 g_dhcp_client_set_request(dhcp_client, G_DHCP_ROUTER);
389 g_dhcp_client_set_request(dhcp_client, 252);
391 g_dhcp_client_register_event(dhcp_client,
392 G_DHCP_CLIENT_EVENT_LEASE_AVAILABLE,
393 lease_available_cb, dhcp);
395 g_dhcp_client_register_event(dhcp_client,
396 G_DHCP_CLIENT_EVENT_IPV4LL_AVAILABLE,
397 ipv4ll_available_cb, dhcp);
399 g_dhcp_client_register_event(dhcp_client,
400 G_DHCP_CLIENT_EVENT_LEASE_LOST, lease_lost_cb, dhcp);
402 g_dhcp_client_register_event(dhcp_client,
403 G_DHCP_CLIENT_EVENT_IPV4LL_LOST, ipv4ll_lost_cb, dhcp);
405 g_dhcp_client_register_event(dhcp_client,
406 G_DHCP_CLIENT_EVENT_NO_LEASE, no_lease_cb, dhcp);
408 dhcp->dhcp_client = dhcp_client;
410 return g_dhcp_client_start(dhcp_client);
413 static int dhcp_release(struct connman_dhcp *dhcp)
415 DBG("dhcp %p", dhcp);
417 if (dhcp->dhcp_client == NULL)
420 g_dhcp_client_stop(dhcp->dhcp_client);
421 g_dhcp_client_unref(dhcp->dhcp_client);
423 dhcp->dhcp_client = NULL;
428 static void remove_network(gpointer user_data)
430 struct connman_dhcp *dhcp = user_data;
432 DBG("dhcp %p", dhcp);
434 dhcp_invalidate(dhcp, FALSE);
440 int __connman_dhcp_start(struct connman_network *network, dhcp_cb callback)
442 struct connman_dhcp *dhcp;
446 dhcp = g_try_new0(struct connman_dhcp, 1);
450 dhcp->network = network;
451 dhcp->callback = callback;
453 g_hash_table_replace(network_table, network, dhcp);
455 return dhcp_request(dhcp);
458 void __connman_dhcp_stop(struct connman_network *network)
462 g_hash_table_remove(network_table, network);
465 int __connman_dhcp_init(void)
469 network_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
470 NULL, remove_network);
475 void __connman_dhcp_cleanup(void)
479 g_hash_table_destroy(network_table);