5 * Copyright (C) 2012 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>
31 #include <connman/storage.h>
33 #include <gdhcp/gdhcp.h>
39 /* Transmission params in msec, RFC 3315 chapter 5.5 */
40 #define INF_MAX_DELAY (1 * 1000)
41 #define INF_TIMEOUT (1 * 1000)
42 #define INF_MAX_RT (120 * 1000)
43 #define SOL_MAX_DELAY (1 * 1000)
44 #define SOL_TIMEOUT (1 * 1000)
45 #define SOL_MAX_RT (120 * 1000)
46 #define REQ_TIMEOUT (1 * 1000)
47 #define REQ_MAX_RT (30 * 1000)
49 #define REN_TIMEOUT (10 * 1000)
50 #define REN_MAX_RT (600 * 1000)
51 #define REB_TIMEOUT (10 * 1000)
52 #define REB_MAX_RT (600 * 1000)
55 struct connman_dhcpv6 {
56 struct connman_network *network;
62 GDHCPClient *dhcp_client;
64 guint timeout; /* operation timeout in msec */
65 guint RT; /* in msec */
66 gboolean use_ta; /* set to TRUE if IPv6 privacy is enabled */
67 GSList *prefixes; /* network prefixes from radvd */
68 int request_count; /* how many times REQUEST have been sent */
69 gboolean stateless; /* TRUE if stateless DHCPv6 is used */
70 gboolean started; /* TRUE if we have DHCPv6 started */
73 static GHashTable *network_table;
75 static int dhcpv6_request(struct connman_dhcpv6 *dhcp, gboolean add_addresses);
77 static void clear_timer(struct connman_dhcpv6 *dhcp)
79 if (dhcp->timeout > 0) {
80 g_source_remove(dhcp->timeout);
85 static inline float get_random()
87 return (rand() % 200 - 100) / 1000.0;
90 /* Calculate a random delay, RFC 3315 chapter 14 */
91 /* RT and MRT are milliseconds */
92 static guint calc_delay(guint RT, guint MRT)
94 float delay = get_random();
95 float rt = RT * (2 + delay);
98 rt = MRT * (1 + delay);
106 static void free_prefix(gpointer data, gpointer user_data)
111 static void dhcpv6_free(struct connman_dhcpv6 *dhcp)
113 g_strfreev(dhcp->nameservers);
114 g_strfreev(dhcp->timeservers);
116 dhcp->nameservers = NULL;
117 dhcp->timeservers = NULL;
118 dhcp->started = FALSE;
120 g_slist_foreach(dhcp->prefixes, free_prefix, NULL);
121 g_slist_free(dhcp->prefixes);
124 static gboolean compare_string_arrays(char **array_a, char **array_b)
128 if (array_a == NULL || array_b == NULL)
131 if (g_strv_length(array_a) != g_strv_length(array_b))
134 for (i = 0; array_a[i] != NULL && array_b[i] != NULL; i++)
135 if (g_strcmp0(array_a[i], array_b[i]) != 0)
141 static void dhcpv6_debug(const char *str, void *data)
143 connman_info("%s: %s\n", (const char *) data, str);
146 static gchar *convert_to_hex(unsigned char *buf, int len)
148 gchar *ret = g_try_malloc(len * 2 + 1);
151 for (i = 0; ret != NULL && i < len; i++)
152 g_snprintf(ret + i * 2, 3, "%02x", buf[i]);
158 * DUID should not change over time so save it to file.
159 * See RFC 3315 chapter 9 for details.
161 static int set_duid(struct connman_service *service,
162 struct connman_network *network,
163 GDHCPClient *dhcp_client, int index)
171 ident = __connman_service_get_ident(service);
173 keyfile = connman_storage_load_service(ident);
177 hex_duid = g_key_file_get_string(keyfile, ident, "IPv6.DHCP.DUID",
179 if (hex_duid != NULL) {
180 unsigned int i, j = 0, hex;
181 size_t hex_duid_len = strlen(hex_duid);
183 duid = g_try_malloc0(hex_duid_len / 2);
185 g_key_file_free(keyfile);
190 for (i = 0; i < hex_duid_len; i += 2) {
191 sscanf(hex_duid + i, "%02x", &hex);
195 duid_len = hex_duid_len / 2;
198 int type = __connman_ipconfig_get_type_from_index(index);
200 ret = g_dhcpv6_create_duid(G_DHCPV6_DUID_LLT, index, type,
203 g_key_file_free(keyfile);
207 hex_duid = convert_to_hex(duid, duid_len);
208 if (hex_duid == NULL) {
209 g_key_file_free(keyfile);
213 g_key_file_set_string(keyfile, ident, "IPv6.DHCP.DUID",
216 __connman_storage_save_service(keyfile, ident);
220 g_key_file_free(keyfile);
222 g_dhcpv6_client_set_duid(dhcp_client, duid, duid_len);
227 static void clear_callbacks(GDHCPClient *dhcp_client)
229 g_dhcp_client_register_event(dhcp_client,
230 G_DHCP_CLIENT_EVENT_SOLICITATION,
233 g_dhcp_client_register_event(dhcp_client,
234 G_DHCP_CLIENT_EVENT_ADVERTISE,
237 g_dhcp_client_register_event(dhcp_client,
238 G_DHCP_CLIENT_EVENT_REQUEST,
241 g_dhcp_client_register_event(dhcp_client,
242 G_DHCP_CLIENT_EVENT_RENEW,
245 g_dhcp_client_register_event(dhcp_client,
246 G_DHCP_CLIENT_EVENT_REBIND,
249 g_dhcp_client_register_event(dhcp_client,
250 G_DHCP_CLIENT_EVENT_RELEASE,
253 g_dhcp_client_register_event(dhcp_client,
254 G_DHCP_CLIENT_EVENT_INFORMATION_REQ,
258 static void info_req_cb(GDHCPClient *dhcp_client, gpointer user_data)
260 struct connman_dhcpv6 *dhcp = user_data;
261 struct connman_service *service;
263 GList *option, *list;
264 char **nameservers, **timeservers;
266 DBG("dhcpv6 information-request %p", dhcp);
268 service = __connman_service_lookup_from_network(dhcp->network);
269 if (service == NULL) {
270 connman_error("Can not lookup service");
274 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_DNS_SERVERS);
275 entries = g_list_length(option);
277 nameservers = g_try_new0(char *, entries + 1);
278 if (nameservers != NULL) {
279 for (i = 0, list = option; list; list = list->next, i++)
280 nameservers[i] = g_strdup(list->data);
283 if (compare_string_arrays(nameservers, dhcp->nameservers) == FALSE) {
284 if (dhcp->nameservers != NULL) {
285 for (i = 0; dhcp->nameservers[i] != NULL; i++)
286 __connman_service_nameserver_remove(service,
287 dhcp->nameservers[i],
289 g_strfreev(dhcp->nameservers);
292 dhcp->nameservers = nameservers;
294 for (i = 0; dhcp->nameservers[i] != NULL; i++)
295 __connman_service_nameserver_append(service,
296 dhcp->nameservers[i],
299 g_strfreev(nameservers);
302 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_SNTP_SERVERS);
303 entries = g_list_length(option);
305 timeservers = g_try_new0(char *, entries + 1);
306 if (timeservers != NULL) {
307 for (i = 0, list = option; list; list = list->next, i++)
308 timeservers[i] = g_strdup(list->data);
311 if (compare_string_arrays(timeservers, dhcp->timeservers) == FALSE) {
312 if (dhcp->timeservers != NULL) {
313 for (i = 0; dhcp->timeservers[i] != NULL; i++)
314 __connman_service_timeserver_remove(service,
315 dhcp->timeservers[i]);
316 g_strfreev(dhcp->timeservers);
319 dhcp->timeservers = timeservers;
321 for (i = 0; dhcp->timeservers[i] != NULL; i++)
322 __connman_service_timeserver_append(service,
323 dhcp->timeservers[i]);
325 g_strfreev(timeservers);
328 if (dhcp->callback != NULL) {
329 uint16_t status = g_dhcpv6_client_get_status(dhcp_client);
330 dhcp->callback(dhcp->network, status == 0 ? TRUE : FALSE);
334 static int dhcpv6_info_request(struct connman_dhcpv6 *dhcp)
336 struct connman_service *service;
337 GDHCPClient *dhcp_client;
338 GDHCPClientError error;
341 DBG("dhcp %p", dhcp);
343 index = connman_network_get_index(dhcp->network);
345 dhcp_client = g_dhcp_client_new(G_DHCP_IPV6, index, &error);
346 if (error != G_DHCP_CLIENT_ERROR_NONE) {
351 if (getenv("CONNMAN_DHCPV6_DEBUG"))
352 g_dhcp_client_set_debug(dhcp_client, dhcpv6_debug, "DHCPv6");
354 service = __connman_service_lookup_from_network(dhcp->network);
355 if (service == NULL) {
357 g_dhcp_client_unref(dhcp_client);
361 ret = set_duid(service, dhcp->network, dhcp_client, index);
364 g_dhcp_client_unref(dhcp_client);
368 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
369 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
370 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
372 g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
373 G_DHCPV6_SNTP_SERVERS);
375 g_dhcp_client_register_event(dhcp_client,
376 G_DHCP_CLIENT_EVENT_INFORMATION_REQ, info_req_cb, dhcp);
378 dhcp->dhcp_client = dhcp_client;
380 return g_dhcp_client_start(dhcp_client, NULL);
383 static int check_ipv6_addr_prefix(GSList *prefixes, char *address)
385 struct in6_addr addr_prefix, addr;
389 for (list = prefixes; list; list = list->next) {
390 char *prefix = list->data;
391 const char *slash = g_strrstr(prefix, "/");
392 const unsigned char bits[] = { 0x00, 0xFE, 0xFC, 0xF8,
393 0xF0, 0xE0, 0xC0, 0x80 };
394 int left, count, i, plen;
399 prefix = g_strndup(prefix, slash - prefix);
400 len = strtol(slash + 1, NULL, 10);
407 inet_pton(AF_INET6, prefix, &addr_prefix);
408 inet_pton(AF_INET6, address, &addr);
410 memset(&addr_prefix.s6_addr[i], 0, count);
411 memset(&addr.s6_addr[i], 0, count);
414 addr_prefix.s6_addr[i - 1] &= bits[left];
415 addr.s6_addr[i - 1] &= bits[left];
420 if (memcmp(&addr_prefix, &addr, 16) == 0) {
429 static int set_addresses(GDHCPClient *dhcp_client,
430 struct connman_dhcpv6 *dhcp)
432 struct connman_service *service;
433 struct connman_ipconfig *ipconfig;
435 GList *option, *list;
436 char **nameservers, **timeservers;
437 const char *c_address;
438 char *address = NULL;
440 service = __connman_service_lookup_from_network(dhcp->network);
441 if (service == NULL) {
442 connman_error("Can not lookup service");
446 ipconfig = __connman_service_get_ip6config(service);
447 if (ipconfig == NULL) {
448 connman_error("Could not lookup ip6config");
452 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_DNS_SERVERS);
453 entries = g_list_length(option);
455 nameservers = g_try_new0(char *, entries + 1);
456 if (nameservers != NULL) {
457 for (i = 0, list = option; list; list = list->next, i++)
458 nameservers[i] = g_strdup(list->data);
461 if (compare_string_arrays(nameservers, dhcp->nameservers) == FALSE) {
462 if (dhcp->nameservers != NULL) {
463 for (i = 0; dhcp->nameservers[i] != NULL; i++)
464 __connman_service_nameserver_remove(service,
465 dhcp->nameservers[i],
467 g_strfreev(dhcp->nameservers);
470 dhcp->nameservers = nameservers;
472 for (i = 0; dhcp->nameservers[i] != NULL; i++)
473 __connman_service_nameserver_append(service,
474 dhcp->nameservers[i],
477 g_strfreev(nameservers);
480 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_SNTP_SERVERS);
481 entries = g_list_length(option);
483 timeservers = g_try_new0(char *, entries + 1);
484 if (timeservers != NULL) {
485 for (i = 0, list = option; list; list = list->next, i++)
486 timeservers[i] = g_strdup(list->data);
489 if (compare_string_arrays(timeservers, dhcp->timeservers) == FALSE) {
490 if (dhcp->timeservers != NULL) {
491 for (i = 0; dhcp->timeservers[i] != NULL; i++)
492 __connman_service_timeserver_remove(service,
493 dhcp->timeservers[i]);
494 g_strfreev(dhcp->timeservers);
497 dhcp->timeservers = timeservers;
499 for (i = 0; dhcp->timeservers[i] != NULL; i++)
500 __connman_service_timeserver_append(service,
501 dhcp->timeservers[i]);
503 g_strfreev(timeservers);
506 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_IA_NA);
508 address = g_strdup(option->data);
510 option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_IA_TA);
512 address = g_strdup(option->data);
515 c_address = __connman_ipconfig_get_local(ipconfig);
517 if (address != NULL &&
518 ((c_address != NULL &&
519 g_strcmp0(address, c_address) != 0) ||
520 (c_address == NULL))) {
523 /* Is this prefix part of the subnet we are suppose to use? */
524 prefix_len = check_ipv6_addr_prefix(dhcp->prefixes, address);
526 __connman_ipconfig_set_local(ipconfig, address);
527 __connman_ipconfig_set_prefixlen(ipconfig, prefix_len);
529 DBG("new address %s/%d", address, prefix_len);
535 static void re_cb(GDHCPClient *dhcp_client, gpointer user_data)
537 struct connman_dhcpv6 *dhcp = user_data;
541 ret = set_addresses(dhcp_client, dhcp);
543 status = g_dhcpv6_client_get_status(dhcp_client);
545 DBG("dhcpv6 cb msg %p ret %d status %d", dhcp, ret, status);
548 if (dhcp->callback != NULL)
549 dhcp->callback(dhcp->network, FALSE);
553 if (status == G_DHCPV6_ERROR_BINDING) {
554 /* RFC 3315, 18.1.8 */
555 dhcpv6_request(dhcp, FALSE);
557 if (dhcp->callback != NULL)
558 dhcp->callback(dhcp->network,
559 status == 0 ? TRUE : FALSE);
563 static void rebind_cb(GDHCPClient *dhcp_client, gpointer user_data)
567 g_dhcpv6_client_reset_rebind(dhcp_client);
568 g_dhcpv6_client_reset_renew(dhcp_client);
570 re_cb(dhcp_client, user_data);
573 static int dhcpv6_rebind(struct connman_dhcpv6 *dhcp)
575 GDHCPClient *dhcp_client;
577 DBG("dhcp %p", dhcp);
579 dhcp_client = dhcp->dhcp_client;
581 g_dhcp_client_clear_requests(dhcp_client);
583 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
584 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
585 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
587 g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
588 G_DHCPV6_SNTP_SERVERS);
590 g_dhcpv6_client_set_ia(dhcp_client,
591 connman_network_get_index(dhcp->network),
592 dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
595 clear_callbacks(dhcp_client);
597 g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_REBIND,
600 dhcp->dhcp_client = dhcp_client;
602 return g_dhcp_client_start(dhcp_client, NULL);
605 static gboolean dhcpv6_restart(gpointer user_data)
607 struct connman_dhcpv6 *dhcp = user_data;
609 if (dhcp->callback != NULL)
610 dhcp->callback(dhcp->network, FALSE);
616 * Check if we need to restart the solicitation procedure. This
617 * is done if all the addresses have expired. RFC 3315, 18.1.4
619 static int check_restart(struct connman_dhcpv6 *dhcp)
621 time_t current, expired;
623 g_dhcpv6_client_get_timeouts(dhcp->dhcp_client, NULL, NULL,
624 NULL, NULL, &expired);
625 current = time(NULL);
627 if (current > expired) {
628 DBG("expired by %d secs", (int)(current - expired));
630 g_timeout_add(0, dhcpv6_restart, dhcp);
638 static gboolean timeout_rebind(gpointer user_data)
640 struct connman_dhcpv6 *dhcp = user_data;
642 if (check_restart(dhcp) < 0)
645 dhcp->RT = calc_delay(dhcp->RT, REB_MAX_RT);
647 DBG("rebind RT timeout %d msec", dhcp->RT);
649 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_rebind, dhcp);
651 g_dhcp_client_start(dhcp->dhcp_client, NULL);
656 static gboolean start_rebind(gpointer user_data)
658 struct connman_dhcpv6 *dhcp = user_data;
660 dhcp->RT = REB_TIMEOUT * (1 + get_random());
662 DBG("rebind initial RT timeout %d msec", dhcp->RT);
664 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_rebind, dhcp);
671 static void request_cb(GDHCPClient *dhcp_client, gpointer user_data)
675 re_cb(dhcp_client, user_data);
678 static int dhcpv6_request(struct connman_dhcpv6 *dhcp,
679 gboolean add_addresses)
681 GDHCPClient *dhcp_client;
684 DBG("dhcp %p add %d", dhcp, add_addresses);
686 dhcp_client = dhcp->dhcp_client;
688 g_dhcp_client_clear_requests(dhcp_client);
690 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
691 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
692 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
693 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
695 g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
696 G_DHCPV6_SNTP_SERVERS);
698 g_dhcpv6_client_get_timeouts(dhcp_client, &T1, &T2, NULL, NULL, NULL);
699 g_dhcpv6_client_set_ia(dhcp_client,
700 connman_network_get_index(dhcp->network),
701 dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
702 &T1, &T2, add_addresses);
704 clear_callbacks(dhcp_client);
706 g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_REQUEST,
709 dhcp->dhcp_client = dhcp_client;
711 return g_dhcp_client_start(dhcp_client, NULL);
714 static gboolean timeout_request(gpointer user_data)
716 struct connman_dhcpv6 *dhcp = user_data;
718 if (dhcp->request_count >= REQ_MAX_RC) {
719 DBG("max request retry attempts %d", dhcp->request_count);
720 dhcp->request_count = 0;
721 if (dhcp->callback != NULL)
722 dhcp->callback(dhcp->network, FALSE);
726 dhcp->request_count++;
728 dhcp->RT = calc_delay(dhcp->RT, REQ_MAX_RT);
729 DBG("request RT timeout %d msec", dhcp->RT);
730 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_request, dhcp);
732 g_dhcp_client_start(dhcp->dhcp_client, NULL);
737 static void renew_cb(GDHCPClient *dhcp_client, gpointer user_data)
741 g_dhcpv6_client_reset_renew(dhcp_client);
743 re_cb(dhcp_client, user_data);
746 static int dhcpv6_renew(struct connman_dhcpv6 *dhcp)
748 GDHCPClient *dhcp_client;
751 DBG("dhcp %p", dhcp);
753 dhcp_client = dhcp->dhcp_client;
755 g_dhcp_client_clear_requests(dhcp_client);
757 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
758 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
759 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
760 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
762 g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
763 G_DHCPV6_SNTP_SERVERS);
765 g_dhcpv6_client_get_timeouts(dhcp_client, &T1, &T2, NULL, NULL, NULL);
766 g_dhcpv6_client_set_ia(dhcp_client,
767 connman_network_get_index(dhcp->network),
768 dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
771 clear_callbacks(dhcp_client);
773 g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_RENEW,
776 dhcp->dhcp_client = dhcp_client;
778 return g_dhcp_client_start(dhcp_client, NULL);
781 static gboolean timeout_renew(gpointer user_data)
783 struct connman_dhcpv6 *dhcp = user_data;
785 if (check_restart(dhcp) < 0)
788 dhcp->RT = calc_delay(dhcp->RT, REN_MAX_RT);
790 DBG("renew RT timeout %d msec", dhcp->RT);
792 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_renew, dhcp);
794 g_dhcp_client_start(dhcp->dhcp_client, NULL);
799 static gboolean start_renew(gpointer user_data)
801 struct connman_dhcpv6 *dhcp = user_data;
803 dhcp->RT = REN_TIMEOUT * (1 + get_random());
805 DBG("renew initial RT timeout %d msec", dhcp->RT);
807 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_renew, dhcp);
814 int __connman_dhcpv6_start_renew(struct connman_network *network,
817 struct connman_dhcpv6 *dhcp;
819 time_t last_renew, last_rebind, current, expired;
821 dhcp = g_hash_table_lookup(network_table, network);
825 DBG("network %p dhcp %p", network, dhcp);
829 g_dhcpv6_client_get_timeouts(dhcp->dhcp_client, &T1, &T2,
830 &last_renew, &last_rebind, &expired);
832 current = time(NULL);
834 DBG("T1 %u T2 %u expires %lu current %lu", T1, T2,
835 (unsigned long)expired, current);
837 if (T1 == 0xffffffff)
843 * Client can choose the timeout.
847 /* RFC 3315, 18.1.4, start solicit if expired */
848 if (current > expired) {
849 DBG("expired by %d secs", (int)(current - expired));
853 dhcp->callback = callback;
855 if (T2 != 0xffffffff && T2 > 0 &&
856 (unsigned)current > (unsigned)last_rebind + T2) {
859 /* RFC 3315, chapter 18.1.3, start rebind */
860 if ((unsigned)current > (unsigned)last_renew + T1)
863 timeout = last_renew - current + T1;
866 * If we just did a renew, do not restart the rebind
869 dhcp->timeout = g_timeout_add_seconds(timeout, start_rebind,
872 DBG("renew after %d secs", T1);
874 dhcp->timeout = g_timeout_add_seconds(T1, start_renew, dhcp);
879 int __connman_dhcpv6_start_release(struct connman_network *network,
882 struct connman_dhcpv6 *dhcp;
883 GDHCPClient *dhcp_client;
885 if (network_table == NULL)
886 return 0; /* we are already released */
888 dhcp = g_hash_table_lookup(network_table, network);
892 DBG("network %p dhcp %p client %p stateless %d", network, dhcp,
893 dhcp->dhcp_client, dhcp->stateless);
895 if (dhcp->stateless == TRUE)
900 dhcp_client = dhcp->dhcp_client;
901 if (dhcp_client == NULL) {
903 * We had started the DHCPv6 handshaking i.e., we have called
904 * __connman_dhcpv6_start() but it has not yet sent
905 * a solicitation message to server. This means that we do not
906 * have DHCPv6 configured yet so we can just quit here.
908 DBG("DHCPv6 was not started");
912 g_dhcp_client_clear_requests(dhcp_client);
913 g_dhcp_client_clear_values(dhcp_client);
915 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
916 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
918 g_dhcpv6_client_set_ia(dhcp_client,
919 connman_network_get_index(dhcp->network),
920 dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
923 clear_callbacks(dhcp_client);
926 * We do not register callback here because the answer might take too
927 * long time and network code might be in the middle of the disconnect.
928 * So we just inform the server that we are done with the addresses
929 * but ignore the reply from server. This is allowed by RFC 3315
933 dhcp->dhcp_client = dhcp_client;
935 return g_dhcp_client_start(dhcp_client, NULL);
938 static int dhcpv6_release(struct connman_dhcpv6 *dhcp)
940 DBG("dhcp %p", dhcp);
946 if (dhcp->dhcp_client == NULL)
949 g_dhcp_client_stop(dhcp->dhcp_client);
950 g_dhcp_client_unref(dhcp->dhcp_client);
952 dhcp->dhcp_client = NULL;
957 static void remove_network(gpointer user_data)
959 struct connman_dhcpv6 *dhcp = user_data;
961 DBG("dhcp %p", dhcp);
963 dhcpv6_release(dhcp);
968 static gboolean timeout_info_req(gpointer user_data)
970 struct connman_dhcpv6 *dhcp = user_data;
972 dhcp->RT = calc_delay(dhcp->RT, INF_MAX_RT);
974 DBG("info RT timeout %d msec", dhcp->RT);
976 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_info_req, dhcp);
978 g_dhcp_client_start(dhcp->dhcp_client, NULL);
983 static gboolean start_info_req(gpointer user_data)
985 struct connman_dhcpv6 *dhcp = user_data;
987 /* Set the retransmission timeout, RFC 3315 chapter 14 */
988 dhcp->RT = INF_TIMEOUT * (1 + get_random());
990 DBG("info initial RT timeout %d msec", dhcp->RT);
992 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_info_req, dhcp);
994 dhcpv6_info_request(dhcp);
999 int __connman_dhcpv6_start_info(struct connman_network *network,
1002 struct connman_dhcpv6 *dhcp;
1007 if (network_table != NULL) {
1008 dhcp = g_hash_table_lookup(network_table, network);
1009 if (dhcp != NULL && dhcp->started == TRUE)
1013 dhcp = g_try_new0(struct connman_dhcpv6, 1);
1017 dhcp->network = network;
1018 dhcp->callback = callback;
1019 dhcp->stateless = TRUE;
1020 dhcp->started = TRUE;
1022 connman_network_ref(network);
1024 DBG("replace network %p dhcp %p", network, dhcp);
1026 g_hash_table_replace(network_table, network, dhcp);
1028 /* Initial timeout, RFC 3315, 18.1.5 */
1029 delay = rand() % 1000;
1031 dhcp->timeout = g_timeout_add(delay, start_info_req, dhcp);
1036 static void advertise_cb(GDHCPClient *dhcp_client, gpointer user_data)
1038 struct connman_dhcpv6 *dhcp = user_data;
1040 DBG("dhcpv6 advertise msg %p", dhcp);
1044 if (g_dhcpv6_client_get_status(dhcp_client) != 0) {
1045 if (dhcp->callback != NULL)
1046 dhcp->callback(dhcp->network, FALSE);
1050 dhcp->RT = REQ_TIMEOUT * (1 + get_random());
1051 DBG("request initial RT timeout %d msec", dhcp->RT);
1052 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_request, dhcp);
1054 dhcp->request_count = 1;
1056 dhcpv6_request(dhcp, TRUE);
1059 static void solicitation_cb(GDHCPClient *dhcp_client, gpointer user_data)
1061 /* We get here if server supports rapid commit */
1062 struct connman_dhcpv6 *dhcp = user_data;
1064 DBG("dhcpv6 solicitation msg %p", dhcp);
1068 set_addresses(dhcp_client, dhcp);
1071 static gboolean timeout_solicitation(gpointer user_data)
1073 struct connman_dhcpv6 *dhcp = user_data;
1075 dhcp->RT = calc_delay(dhcp->RT, SOL_MAX_RT);
1077 DBG("solicit RT timeout %d msec", dhcp->RT);
1079 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_solicitation, dhcp);
1081 g_dhcp_client_start(dhcp->dhcp_client, NULL);
1086 static int dhcpv6_solicitation(struct connman_dhcpv6 *dhcp)
1088 struct connman_service *service;
1089 struct connman_ipconfig *ipconfig_ipv6;
1090 GDHCPClient *dhcp_client;
1091 GDHCPClientError error;
1094 DBG("dhcp %p", dhcp);
1096 index = connman_network_get_index(dhcp->network);
1098 dhcp_client = g_dhcp_client_new(G_DHCP_IPV6, index, &error);
1099 if (error != G_DHCP_CLIENT_ERROR_NONE) {
1104 if (getenv("CONNMAN_DHCPV6_DEBUG"))
1105 g_dhcp_client_set_debug(dhcp_client, dhcpv6_debug, "DHCPv6");
1107 service = __connman_service_lookup_from_network(dhcp->network);
1108 if (service == NULL) {
1110 g_dhcp_client_unref(dhcp_client);
1114 ret = set_duid(service, dhcp->network, dhcp_client, index);
1117 g_dhcp_client_unref(dhcp_client);
1121 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
1122 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_RAPID_COMMIT);
1123 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
1124 g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
1126 g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
1127 G_DHCPV6_SNTP_SERVERS);
1129 ipconfig_ipv6 = __connman_service_get_ip6config(service);
1130 dhcp->use_ta = __connman_ipconfig_ipv6_privacy_enabled(ipconfig_ipv6);
1132 g_dhcpv6_client_set_ia(dhcp_client, index,
1133 dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
1136 clear_callbacks(dhcp_client);
1138 g_dhcp_client_register_event(dhcp_client,
1139 G_DHCP_CLIENT_EVENT_SOLICITATION,
1140 solicitation_cb, dhcp);
1142 g_dhcp_client_register_event(dhcp_client,
1143 G_DHCP_CLIENT_EVENT_ADVERTISE,
1144 advertise_cb, dhcp);
1146 dhcp->dhcp_client = dhcp_client;
1148 return g_dhcp_client_start(dhcp_client, NULL);
1151 static gboolean start_solicitation(gpointer user_data)
1153 struct connman_dhcpv6 *dhcp = user_data;
1155 /* Set the retransmission timeout, RFC 3315 chapter 14 */
1156 dhcp->RT = SOL_TIMEOUT * (1 + get_random());
1158 DBG("solicit initial RT timeout %d msec", dhcp->RT);
1160 dhcp->timeout = g_timeout_add(dhcp->RT, timeout_solicitation, dhcp);
1162 dhcpv6_solicitation(dhcp);
1167 int __connman_dhcpv6_start(struct connman_network *network,
1168 GSList *prefixes, dhcp_cb callback)
1170 struct connman_dhcpv6 *dhcp;
1175 if (network_table != NULL) {
1176 dhcp = g_hash_table_lookup(network_table, network);
1177 if (dhcp != NULL && dhcp->started == TRUE)
1181 dhcp = g_try_new0(struct connman_dhcpv6, 1);
1185 dhcp->network = network;
1186 dhcp->callback = callback;
1187 dhcp->prefixes = prefixes;
1188 dhcp->started = TRUE;
1190 connman_network_ref(network);
1192 DBG("replace network %p dhcp %p", network, dhcp);
1194 g_hash_table_replace(network_table, network, dhcp);
1196 /* Initial timeout, RFC 3315, 17.1.2 */
1197 delay = rand() % 1000;
1199 dhcp->timeout = g_timeout_add(delay, start_solicitation, dhcp);
1204 void __connman_dhcpv6_stop(struct connman_network *network)
1208 if (network_table == NULL)
1211 if (g_hash_table_remove(network_table, network) == TRUE)
1212 connman_network_unref(network);
1215 int __connman_dhcpv6_init(void)
1221 network_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1222 NULL, remove_network);
1227 void __connman_dhcpv6_cleanup(void)
1231 g_hash_table_destroy(network_table);
1232 network_table = NULL;