*
* Connection Manager
*
- * Copyright (C) 2011 Intel Corporation. All rights reserved.
+ * Copyright (C) 2012 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
#define INF_MAX_DELAY (1 * 1000)
#define INF_TIMEOUT (1 * 1000)
#define INF_MAX_RT (120 * 1000)
+#define SOL_MAX_DELAY (1 * 1000)
+#define SOL_TIMEOUT (1 * 1000)
+#define SOL_MAX_RT (120 * 1000)
+#define REQ_TIMEOUT (1 * 1000)
+#define REQ_MAX_RT (30 * 1000)
+#define REQ_MAX_RC 10
+#define REN_TIMEOUT (10 * 1000)
+#define REN_MAX_RT (600 * 1000)
+#define REB_TIMEOUT (10 * 1000)
+#define REB_MAX_RT (600 * 1000)
struct connman_dhcpv6 {
GDHCPClient *dhcp_client;
- guint timeout;
- guint RT; /* in msec */
+ guint timeout; /* operation timeout in msec */
+ guint RT; /* in msec */
+ gboolean use_ta; /* set to TRUE if IPv6 privacy is enabled */
+ GSList *prefixes; /* network prefixes from radvd */
+ int request_count; /* how many times REQUEST have been sent */
+ gboolean stateless; /* TRUE if stateless DHCPv6 is used */
+ gboolean started; /* TRUE if we have DHCPv6 started */
};
static GHashTable *network_table;
+static int dhcpv6_request(struct connman_dhcpv6 *dhcp, gboolean add_addresses);
+
+static void clear_timer(struct connman_dhcpv6 *dhcp)
+{
+ if (dhcp->timeout > 0) {
+ g_source_remove(dhcp->timeout);
+ dhcp->timeout = 0;
+ }
+}
+
static inline float get_random()
{
return (rand() % 200 - 100) / 1000.0;
return (guint)rt;
}
+static void free_prefix(gpointer data, gpointer user_data)
+{
+ g_free(data);
+}
+
static void dhcpv6_free(struct connman_dhcpv6 *dhcp)
{
g_strfreev(dhcp->nameservers);
dhcp->nameservers = NULL;
dhcp->timeservers = NULL;
+ dhcp->started = FALSE;
+
+ g_slist_foreach(dhcp->prefixes, free_prefix, NULL);
+ g_slist_free(dhcp->prefixes);
}
static gboolean compare_string_arrays(char **array_a, char **array_b)
return 0;
}
+static void clear_callbacks(GDHCPClient *dhcp_client)
+{
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_SOLICITATION,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_ADVERTISE,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_REQUEST,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_RENEW,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_REBIND,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_RELEASE,
+ NULL, NULL);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_INFORMATION_REQ,
+ NULL, NULL);
+}
+
static void info_req_cb(GDHCPClient *dhcp_client, gpointer user_data)
{
struct connman_dhcpv6 *dhcp = user_data;
dhcp->nameservers = nameservers;
- for (i = 0; dhcp->nameservers[i] != NULL; i++)
+ for (i = 0; dhcp->nameservers != NULL &&
+ dhcp->nameservers[i] != NULL; i++)
__connman_service_nameserver_append(service,
dhcp->nameservers[i],
FALSE);
dhcp->timeservers = timeservers;
- for (i = 0; dhcp->timeservers[i] != NULL; i++)
+ for (i = 0; dhcp->timeservers != NULL &&
+ dhcp->timeservers[i] != NULL; i++)
__connman_service_timeserver_append(service,
dhcp->timeservers[i]);
} else
index = connman_network_get_index(dhcp->network);
dhcp_client = g_dhcp_client_new(G_DHCP_IPV6, index, &error);
- if (error != G_DHCP_CLIENT_ERROR_NONE)
+ if (error != G_DHCP_CLIENT_ERROR_NONE) {
+ clear_timer(dhcp);
return -EINVAL;
+ }
if (getenv("CONNMAN_DHCPV6_DEBUG"))
g_dhcp_client_set_debug(dhcp_client, dhcpv6_debug, "DHCPv6");
service = __connman_service_lookup_from_network(dhcp->network);
- if (service == NULL)
+ if (service == NULL) {
+ clear_timer(dhcp);
+ g_dhcp_client_unref(dhcp_client);
return -EINVAL;
+ }
ret = set_duid(service, dhcp->network, dhcp_client, index);
- if (ret < 0)
+ if (ret < 0) {
+ clear_timer(dhcp);
+ g_dhcp_client_unref(dhcp_client);
return ret;
+ }
g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
return g_dhcp_client_start(dhcp_client, NULL);
}
-static int dhcpv6_release(struct connman_dhcpv6 *dhcp)
+static int check_ipv6_addr_prefix(GSList *prefixes, char *address)
+{
+ struct in6_addr addr_prefix, addr;
+ GSList *list;
+ int ret = 128, len;
+
+ for (list = prefixes; list; list = list->next) {
+ char *prefix = list->data;
+ const char *slash = g_strrstr(prefix, "/");
+ const unsigned char bits[] = { 0x00, 0xFE, 0xFC, 0xF8,
+ 0xF0, 0xE0, 0xC0, 0x80 };
+ int left, count, i, plen;
+
+ if (slash == NULL)
+ continue;
+
+ prefix = g_strndup(prefix, slash - prefix);
+ len = strtol(slash + 1, NULL, 10);
+ plen = 128 - len;
+
+ count = plen / 8;
+ left = plen % 8;
+ i = 16 - count;
+
+ inet_pton(AF_INET6, prefix, &addr_prefix);
+ inet_pton(AF_INET6, address, &addr);
+
+ memset(&addr_prefix.s6_addr[i], 0, count);
+ memset(&addr.s6_addr[i], 0, count);
+
+ if (left) {
+ addr_prefix.s6_addr[i - 1] &= bits[left];
+ addr.s6_addr[i - 1] &= bits[left];
+ }
+
+ g_free(prefix);
+
+ if (memcmp(&addr_prefix, &addr, 16) == 0) {
+ ret = len;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int set_addresses(GDHCPClient *dhcp_client,
+ struct connman_dhcpv6 *dhcp)
+{
+ struct connman_service *service;
+ struct connman_ipconfig *ipconfig;
+ int entries, i;
+ GList *option, *list;
+ char **nameservers, **timeservers;
+ const char *c_address;
+ char *address = NULL;
+
+ service = __connman_service_lookup_from_network(dhcp->network);
+ if (service == NULL) {
+ connman_error("Can not lookup service");
+ return -EINVAL;
+ }
+
+ ipconfig = __connman_service_get_ip6config(service);
+ if (ipconfig == NULL) {
+ connman_error("Could not lookup ip6config");
+ return -EINVAL;
+ }
+
+ option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_DNS_SERVERS);
+ entries = g_list_length(option);
+
+ nameservers = g_try_new0(char *, entries + 1);
+ if (nameservers != NULL) {
+ for (i = 0, list = option; list; list = list->next, i++)
+ nameservers[i] = g_strdup(list->data);
+ }
+
+ if (compare_string_arrays(nameservers, dhcp->nameservers) == FALSE) {
+ if (dhcp->nameservers != NULL) {
+ for (i = 0; dhcp->nameservers[i] != NULL; i++)
+ __connman_service_nameserver_remove(service,
+ dhcp->nameservers[i],
+ FALSE);
+ g_strfreev(dhcp->nameservers);
+ }
+
+ dhcp->nameservers = nameservers;
+
+ for (i = 0; dhcp->nameservers != NULL &&
+ dhcp->nameservers[i] != NULL; i++)
+ __connman_service_nameserver_append(service,
+ dhcp->nameservers[i],
+ FALSE);
+ } else
+ g_strfreev(nameservers);
+
+
+ option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_SNTP_SERVERS);
+ entries = g_list_length(option);
+
+ timeservers = g_try_new0(char *, entries + 1);
+ if (timeservers != NULL) {
+ for (i = 0, list = option; list; list = list->next, i++)
+ timeservers[i] = g_strdup(list->data);
+ }
+
+ if (compare_string_arrays(timeservers, dhcp->timeservers) == FALSE) {
+ if (dhcp->timeservers != NULL) {
+ for (i = 0; dhcp->timeservers[i] != NULL; i++)
+ __connman_service_timeserver_remove(service,
+ dhcp->timeservers[i]);
+ g_strfreev(dhcp->timeservers);
+ }
+
+ dhcp->timeservers = timeservers;
+
+ for (i = 0; dhcp->timeservers != NULL &&
+ dhcp->timeservers[i] != NULL; i++)
+ __connman_service_timeserver_append(service,
+ dhcp->timeservers[i]);
+ } else
+ g_strfreev(timeservers);
+
+
+ option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_IA_NA);
+ if (option != NULL)
+ address = g_strdup(option->data);
+ else {
+ option = g_dhcp_client_get_option(dhcp_client, G_DHCPV6_IA_TA);
+ if (option != NULL)
+ address = g_strdup(option->data);
+ }
+
+ c_address = __connman_ipconfig_get_local(ipconfig);
+
+ if (address != NULL &&
+ ((c_address != NULL &&
+ g_strcmp0(address, c_address) != 0) ||
+ (c_address == NULL))) {
+ int prefix_len;
+
+ /* Is this prefix part of the subnet we are suppose to use? */
+ prefix_len = check_ipv6_addr_prefix(dhcp->prefixes, address);
+
+ __connman_ipconfig_set_local(ipconfig, address);
+ __connman_ipconfig_set_prefixlen(ipconfig, prefix_len);
+
+ DBG("new address %s/%d", address, prefix_len);
+ }
+
+ return 0;
+}
+
+static void re_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+ uint16_t status;
+ int ret;
+
+ ret = set_addresses(dhcp_client, dhcp);
+
+ status = g_dhcpv6_client_get_status(dhcp_client);
+
+ DBG("dhcpv6 cb msg %p ret %d status %d", dhcp, ret, status);
+
+ if (ret < 0) {
+ if (dhcp->callback != NULL)
+ dhcp->callback(dhcp->network, FALSE);
+ return;
+ }
+
+ if (status == G_DHCPV6_ERROR_BINDING) {
+ /* RFC 3315, 18.1.8 */
+ dhcpv6_request(dhcp, FALSE);
+ } else {
+ if (dhcp->callback != NULL)
+ dhcp->callback(dhcp->network,
+ status == 0 ? TRUE : FALSE);
+ }
+}
+
+static void rebind_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ DBG("");
+
+ g_dhcpv6_client_reset_rebind(dhcp_client);
+ g_dhcpv6_client_reset_renew(dhcp_client);
+
+ re_cb(dhcp_client, user_data);
+}
+
+static int dhcpv6_rebind(struct connman_dhcpv6 *dhcp)
{
+ GDHCPClient *dhcp_client;
+
DBG("dhcp %p", dhcp);
- if (dhcp->timeout > 0) {
- g_source_remove(dhcp->timeout);
- dhcp->timeout = 0;
+ dhcp_client = dhcp->dhcp_client;
+
+ g_dhcp_client_clear_requests(dhcp_client);
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
+ G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_set_ia(dhcp_client,
+ connman_network_get_index(dhcp->network),
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ NULL, NULL, FALSE);
+
+ clear_callbacks(dhcp_client);
+
+ g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_REBIND,
+ rebind_cb, dhcp);
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+
+static gboolean dhcpv6_restart(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ if (dhcp->callback != NULL)
+ dhcp->callback(dhcp->network, FALSE);
+
+ return FALSE;
+}
+
+/*
+ * Check if we need to restart the solicitation procedure. This
+ * is done if all the addresses have expired. RFC 3315, 18.1.4
+ */
+static int check_restart(struct connman_dhcpv6 *dhcp)
+{
+ time_t current, expired;
+
+ g_dhcpv6_client_get_timeouts(dhcp->dhcp_client, NULL, NULL,
+ NULL, NULL, &expired);
+ current = time(NULL);
+
+ if (current > expired) {
+ DBG("expired by %d secs", (int)(current - expired));
+
+ g_timeout_add(0, dhcpv6_restart, dhcp);
+
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static gboolean timeout_rebind(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ if (check_restart(dhcp) < 0)
+ return FALSE;
+
+ dhcp->RT = calc_delay(dhcp->RT, REB_MAX_RT);
+
+ DBG("rebind RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_rebind, dhcp);
+
+ g_dhcp_client_start(dhcp->dhcp_client, NULL);
+
+ return FALSE;
+}
+
+static gboolean start_rebind(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ dhcp->RT = REB_TIMEOUT * (1 + get_random());
+
+ DBG("rebind initial RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_rebind, dhcp);
+
+ dhcpv6_rebind(dhcp);
+
+ return FALSE;
+}
+
+static void request_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ DBG("");
+
+ re_cb(dhcp_client, user_data);
+}
+
+static int dhcpv6_request(struct connman_dhcpv6 *dhcp,
+ gboolean add_addresses)
+{
+ GDHCPClient *dhcp_client;
+ uint32_t T1, T2;
+
+ DBG("dhcp %p add %d", dhcp, add_addresses);
+
+ dhcp_client = dhcp->dhcp_client;
+
+ g_dhcp_client_clear_requests(dhcp_client);
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
+ G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_get_timeouts(dhcp_client, &T1, &T2, NULL, NULL, NULL);
+ g_dhcpv6_client_set_ia(dhcp_client,
+ connman_network_get_index(dhcp->network),
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ &T1, &T2, add_addresses);
+
+ clear_callbacks(dhcp_client);
+
+ g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_REQUEST,
+ request_cb, dhcp);
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+
+static gboolean timeout_request(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ if (dhcp->request_count >= REQ_MAX_RC) {
+ DBG("max request retry attempts %d", dhcp->request_count);
+ dhcp->request_count = 0;
+ if (dhcp->callback != NULL)
+ dhcp->callback(dhcp->network, FALSE);
+ return FALSE;
}
+ dhcp->request_count++;
+
+ dhcp->RT = calc_delay(dhcp->RT, REQ_MAX_RT);
+ DBG("request RT timeout %d msec", dhcp->RT);
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_request, dhcp);
+
+ g_dhcp_client_start(dhcp->dhcp_client, NULL);
+
+ return FALSE;
+}
+
+static void renew_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ DBG("");
+
+ g_dhcpv6_client_reset_renew(dhcp_client);
+
+ re_cb(dhcp_client, user_data);
+}
+
+static int dhcpv6_renew(struct connman_dhcpv6 *dhcp)
+{
+ GDHCPClient *dhcp_client;
+ uint32_t T1, T2;
+
+ DBG("dhcp %p", dhcp);
+
+ dhcp_client = dhcp->dhcp_client;
+
+ g_dhcp_client_clear_requests(dhcp_client);
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
+ G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_get_timeouts(dhcp_client, &T1, &T2, NULL, NULL, NULL);
+ g_dhcpv6_client_set_ia(dhcp_client,
+ connman_network_get_index(dhcp->network),
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ &T1, &T2, TRUE);
+
+ clear_callbacks(dhcp_client);
+
+ g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_RENEW,
+ renew_cb, dhcp);
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+
+static gboolean timeout_renew(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ if (check_restart(dhcp) < 0)
+ return FALSE;
+
+ dhcp->RT = calc_delay(dhcp->RT, REN_MAX_RT);
+
+ DBG("renew RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_renew, dhcp);
+
+ g_dhcp_client_start(dhcp->dhcp_client, NULL);
+
+ return FALSE;
+}
+
+static gboolean start_renew(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ dhcp->RT = REN_TIMEOUT * (1 + get_random());
+
+ DBG("renew initial RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_renew, dhcp);
+
+ dhcpv6_renew(dhcp);
+
+ return FALSE;
+}
+
+int __connman_dhcpv6_start_renew(struct connman_network *network,
+ dhcp_cb callback)
+{
+ struct connman_dhcpv6 *dhcp;
+ uint32_t T1, T2;
+ time_t last_renew, last_rebind, current, expired;
+
+ dhcp = g_hash_table_lookup(network_table, network);
+ if (dhcp == NULL)
+ return -ENOENT;
+
+ DBG("network %p dhcp %p", network, dhcp);
+
+ clear_timer(dhcp);
+
+ g_dhcpv6_client_get_timeouts(dhcp->dhcp_client, &T1, &T2,
+ &last_renew, &last_rebind, &expired);
+
+ current = time(NULL);
+
+ DBG("T1 %u T2 %u expires %lu current %lu", T1, T2,
+ (unsigned long)expired, current);
+
+ if (T1 == 0xffffffff)
+ /* RFC 3315, 22.4 */
+ return 0;
+
+ if (T1 == 0)
+ /* RFC 3315, 22.4
+ * Client can choose the timeout.
+ */
+ T1 = 1800;
+
+ /* RFC 3315, 18.1.4, start solicit if expired */
+ if (current > expired) {
+ DBG("expired by %d secs", (int)(current - expired));
+ return -ETIMEDOUT;
+ }
+
+ dhcp->callback = callback;
+
+ if (T2 != 0xffffffff && T2 > 0 &&
+ (unsigned)current > (unsigned)last_rebind + T2) {
+ int timeout;
+
+ /* RFC 3315, chapter 18.1.3, start rebind */
+ if ((unsigned)current > (unsigned)last_renew + T1)
+ timeout = 0;
+ else
+ timeout = last_renew - current + T1;
+
+ /*
+ * If we just did a renew, do not restart the rebind
+ * immediately.
+ */
+ dhcp->timeout = g_timeout_add_seconds(timeout, start_rebind,
+ dhcp);
+ } else {
+ DBG("renew after %d secs", T1);
+
+ dhcp->timeout = g_timeout_add_seconds(T1, start_renew, dhcp);
+ }
+ return 0;
+}
+
+int __connman_dhcpv6_start_release(struct connman_network *network,
+ dhcp_cb callback)
+{
+ struct connman_dhcpv6 *dhcp;
+ GDHCPClient *dhcp_client;
+
+ if (network_table == NULL)
+ return 0; /* we are already released */
+
+ dhcp = g_hash_table_lookup(network_table, network);
+ if (dhcp == NULL)
+ return -ENOENT;
+
+ DBG("network %p dhcp %p client %p stateless %d", network, dhcp,
+ dhcp->dhcp_client, dhcp->stateless);
+
+ if (dhcp->stateless == TRUE)
+ return -EINVAL;
+
+ clear_timer(dhcp);
+
+ dhcp_client = dhcp->dhcp_client;
+ if (dhcp_client == NULL) {
+ /*
+ * We had started the DHCPv6 handshaking i.e., we have called
+ * __connman_dhcpv6_start() but it has not yet sent
+ * a solicitation message to server. This means that we do not
+ * have DHCPv6 configured yet so we can just quit here.
+ */
+ DBG("DHCPv6 was not started");
+ return 0;
+ }
+
+ g_dhcp_client_clear_requests(dhcp_client);
+ g_dhcp_client_clear_values(dhcp_client);
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
+
+ g_dhcpv6_client_set_ia(dhcp_client,
+ connman_network_get_index(dhcp->network),
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ NULL, NULL, TRUE);
+
+ clear_callbacks(dhcp_client);
+
+ /*
+ * We do not register callback here because the answer might take too
+ * long time and network code might be in the middle of the disconnect.
+ * So we just inform the server that we are done with the addresses
+ * but ignore the reply from server. This is allowed by RFC 3315
+ * chapter 18.1.6.
+ */
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+
+static int dhcpv6_release(struct connman_dhcpv6 *dhcp)
+{
+ DBG("dhcp %p", dhcp);
+
+ clear_timer(dhcp);
+
dhcpv6_free(dhcp);
if (dhcp->dhcp_client == NULL)
DBG("");
+ if (network_table != NULL) {
+ dhcp = g_hash_table_lookup(network_table, network);
+ if (dhcp != NULL && dhcp->started == TRUE)
+ return -EBUSY;
+ }
+
dhcp = g_try_new0(struct connman_dhcpv6, 1);
if (dhcp == NULL)
return -ENOMEM;
dhcp->network = network;
dhcp->callback = callback;
+ dhcp->stateless = TRUE;
+ dhcp->started = TRUE;
connman_network_ref(network);
+ DBG("replace network %p dhcp %p", network, dhcp);
+
g_hash_table_replace(network_table, network, dhcp);
/* Initial timeout, RFC 3315, 18.1.5 */
return 0;
}
+static void advertise_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ DBG("dhcpv6 advertise msg %p", dhcp);
+
+ clear_timer(dhcp);
+
+ if (g_dhcpv6_client_get_status(dhcp_client) != 0) {
+ if (dhcp->callback != NULL)
+ dhcp->callback(dhcp->network, FALSE);
+ return;
+ }
+
+ dhcp->RT = REQ_TIMEOUT * (1 + get_random());
+ DBG("request initial RT timeout %d msec", dhcp->RT);
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_request, dhcp);
+
+ dhcp->request_count = 1;
+
+ dhcpv6_request(dhcp, TRUE);
+}
+
+static void solicitation_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ /* We get here if server supports rapid commit */
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ DBG("dhcpv6 solicitation msg %p", dhcp);
+
+ clear_timer(dhcp);
+
+ set_addresses(dhcp_client, dhcp);
+}
+
+static gboolean timeout_solicitation(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ dhcp->RT = calc_delay(dhcp->RT, SOL_MAX_RT);
+
+ DBG("solicit RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_solicitation, dhcp);
+
+ g_dhcp_client_start(dhcp->dhcp_client, NULL);
+
+ return FALSE;
+}
+
+static int dhcpv6_solicitation(struct connman_dhcpv6 *dhcp)
+{
+ struct connman_service *service;
+ struct connman_ipconfig *ipconfig_ipv6;
+ GDHCPClient *dhcp_client;
+ GDHCPClientError error;
+ int index, ret;
+
+ DBG("dhcp %p", dhcp);
+
+ index = connman_network_get_index(dhcp->network);
+
+ dhcp_client = g_dhcp_client_new(G_DHCP_IPV6, index, &error);
+ if (error != G_DHCP_CLIENT_ERROR_NONE) {
+ clear_timer(dhcp);
+ return -EINVAL;
+ }
+
+ if (getenv("CONNMAN_DHCPV6_DEBUG"))
+ g_dhcp_client_set_debug(dhcp_client, dhcpv6_debug, "DHCPv6");
+
+ service = __connman_service_lookup_from_network(dhcp->network);
+ if (service == NULL) {
+ clear_timer(dhcp);
+ g_dhcp_client_unref(dhcp_client);
+ return -EINVAL;
+ }
+
+ ret = set_duid(service, dhcp->network, dhcp_client, index);
+ if (ret < 0) {
+ clear_timer(dhcp);
+ g_dhcp_client_unref(dhcp_client);
+ return ret;
+ }
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_RAPID_COMMIT);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_DNS_SERVERS);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SNTP_SERVERS);
+
+ g_dhcpv6_client_set_oro(dhcp_client, 2, G_DHCPV6_DNS_SERVERS,
+ G_DHCPV6_SNTP_SERVERS);
+
+ ipconfig_ipv6 = __connman_service_get_ip6config(service);
+ dhcp->use_ta = __connman_ipconfig_ipv6_privacy_enabled(ipconfig_ipv6);
+
+ g_dhcpv6_client_set_ia(dhcp_client, index,
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ NULL, NULL, FALSE);
+
+ clear_callbacks(dhcp_client);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_SOLICITATION,
+ solicitation_cb, dhcp);
+
+ g_dhcp_client_register_event(dhcp_client,
+ G_DHCP_CLIENT_EVENT_ADVERTISE,
+ advertise_cb, dhcp);
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+
+static gboolean start_solicitation(gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ /* Set the retransmission timeout, RFC 3315 chapter 14 */
+ dhcp->RT = SOL_TIMEOUT * (1 + get_random());
+
+ DBG("solicit initial RT timeout %d msec", dhcp->RT);
+
+ dhcp->timeout = g_timeout_add(dhcp->RT, timeout_solicitation, dhcp);
+
+ dhcpv6_solicitation(dhcp);
+
+ return FALSE;
+}
+
+int __connman_dhcpv6_start(struct connman_network *network,
+ GSList *prefixes, dhcp_cb callback)
+{
+ struct connman_dhcpv6 *dhcp;
+ int delay;
+
+ DBG("");
+
+ if (network_table != NULL) {
+ dhcp = g_hash_table_lookup(network_table, network);
+ if (dhcp != NULL && dhcp->started == TRUE)
+ return -EBUSY;
+ }
+
+ dhcp = g_try_new0(struct connman_dhcpv6, 1);
+ if (dhcp == NULL)
+ return -ENOMEM;
+
+ dhcp->network = network;
+ dhcp->callback = callback;
+ dhcp->prefixes = prefixes;
+ dhcp->started = TRUE;
+
+ connman_network_ref(network);
+
+ DBG("replace network %p dhcp %p", network, dhcp);
+
+ g_hash_table_replace(network_table, network, dhcp);
+
+ /* Initial timeout, RFC 3315, 17.1.2 */
+ delay = rand() % 1000;
+
+ dhcp->timeout = g_timeout_add(delay, start_solicitation, dhcp);
+
+ return 0;
+}
+
void __connman_dhcpv6_stop(struct connman_network *network)
{
DBG("");
{
DBG("");
- srand(time(0));
+ srand(time(NULL));
network_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
NULL, remove_network);
projects / framework / connectivity / connman.git / blobdiff