/**
* dhcp_invalidate: Invalidate an existing DHCP lease
* @dhcp: pointer to the DHCP lease to invalidate.
* @callback: flag indicating whether or not to invoke the client callback
* if present.
*
* Invalidates an existing DHCP lease, optionally invoking the client
* callback. The caller may wish to avoid the client callback invocation
* when the invocation of that callback might otherwise unnecessarily upset
* service state due to the IP configuration change implied by this
* invalidation.
*/
static void dhcp_invalidate(struct connman_dhcp *dhcp, bool callback)
{
DBG("dhcp %p callback %u", dhcp, callback);
if (!dhcp)
return;
__connman_6to4_remove(dhcp->ipconfig);
if (!apply_dhcp_invalidate_on_network(dhcp))
return;
__connman_ipconfig_set_dhcp_address(dhcp->ipconfig,
__connman_ipconfig_get_local(dhcp->ipconfig));
DBG("last address %s",
__connman_ipconfig_get_dhcp_address(dhcp->ipconfig));
__connman_ipconfig_address_remove(dhcp->ipconfig);
__connman_ipconfig_set_local(dhcp->ipconfig, NULL);
__connman_ipconfig_set_broadcast(dhcp->ipconfig, NULL);
__connman_ipconfig_set_gateway(dhcp->ipconfig, NULL);
__connman_ipconfig_set_prefixlen(dhcp->ipconfig, 0);
if (dhcp->callback && callback)
dhcp->callback(dhcp->ipconfig, dhcp->network,
false, dhcp->user_data);
}
static int dhcp_request(struct connman_dhcp *dhcp)
{
struct connman_service *service;
struct connman_ipconfig *ipconfig;
GDHCPClient *dhcp_client;
GDHCPClientError error;
const char *hostname;
int index;
DBG("dhcp %p", dhcp);
index = connman_network_get_index(dhcp->network);
dhcp_client = g_dhcp_client_new(G_DHCP_IPV4, index, &error);
if (error != G_DHCP_CLIENT_ERROR_NONE)
return -EINVAL;
if (getenv("CONNMAN_DHCP_DEBUG"))
g_dhcp_client_set_debug(dhcp_client, dhcp_debug, "DHCP");
hostname = connman_utsname_get_hostname();
if (hostname != NULL)
g_dhcp_client_set_send(dhcp_client, G_DHCP_HOST_NAME, hostname);
g_dhcp_client_set_request(dhcp_client, G_DHCP_HOST_NAME);
g_dhcp_client_set_request(dhcp_client, G_DHCP_SUBNET);
g_dhcp_client_set_request(dhcp_client, G_DHCP_DNS_SERVER);
g_dhcp_client_set_request(dhcp_client, G_DHCP_DOMAIN_NAME);
g_dhcp_client_set_request(dhcp_client, G_DHCP_NTP_SERVER);
g_dhcp_client_set_request(dhcp_client, G_DHCP_ROUTER);
g_dhcp_client_set_request(dhcp_client, 252);
g_dhcp_client_register_event(dhcp_client,
G_DHCP_CLIENT_EVENT_LEASE_AVAILABLE,
lease_available_cb, dhcp);
g_dhcp_client_register_event(dhcp_client,
G_DHCP_CLIENT_EVENT_IPV4LL_AVAILABLE,
ipv4ll_available_cb, dhcp);
g_dhcp_client_register_event(dhcp_client,
G_DHCP_CLIENT_EVENT_LEASE_LOST, lease_lost_cb, dhcp);
g_dhcp_client_register_event(dhcp_client,
G_DHCP_CLIENT_EVENT_IPV4LL_LOST, ipv4ll_lost_cb, dhcp);
g_dhcp_client_register_event(dhcp_client,
G_DHCP_CLIENT_EVENT_NO_LEASE, no_lease_cb, dhcp);
dhcp->dhcp_client = dhcp_client;
service = __connman_service_lookup_from_network(dhcp->network);
ipconfig = __connman_service_get_ip4config(service);
return g_dhcp_client_start(dhcp_client,
__connman_ipconfig_get_dhcp_address(ipconfig));
}
/**
* dhcp_invalidate: Invalidate an existing DHCP lease
* @dhcp: pointer to the DHCP lease to invalidate.
* @callback: flag indicating whether or not to invoke the client callback
* if present.
*
* Invalidates an existing DHCP lease, optionally invoking the client
* callback. The caller may wish to avoid the client callback invocation
* when the invocation of that callback might otherwise unnecessarily upset
* service state due to the IP configuration change implied by this
* invalidation.
*/
static void dhcp_invalidate(struct connman_dhcp *dhcp, connman_bool_t callback)
{
struct connman_service *service;
struct connman_ipconfig *ipconfig;
int i;
DBG("dhcp %p callback %u", dhcp, callback);
if (dhcp == NULL)
return;
service = connman_service_lookup_from_network(dhcp->network);
if (service == NULL)
goto out;
ipconfig = __connman_service_get_ip4config(service);
if (ipconfig == NULL)
goto out;
__connman_6to4_remove(ipconfig);
__connman_service_set_domainname(service, NULL);
__connman_service_set_pac(service, NULL);
if (dhcp->timeservers != NULL) {
for (i = 0; dhcp->timeservers[i] != NULL; i++) {
__connman_service_timeserver_remove(service,
dhcp->timeservers[i]);
}
}
if (dhcp->nameservers != NULL) {
for (i = 0; dhcp->nameservers[i] != NULL; i++) {
__connman_service_nameserver_remove(service,
dhcp->nameservers[i], FALSE);
}
}
__connman_ipconfig_set_dhcp_address(ipconfig,
__connman_ipconfig_get_local(ipconfig));
DBG("last address %s", __connman_ipconfig_get_dhcp_address(ipconfig));
__connman_ipconfig_address_remove(ipconfig);
__connman_ipconfig_set_local(ipconfig, NULL);
__connman_ipconfig_set_broadcast(ipconfig, NULL);
__connman_ipconfig_set_gateway(ipconfig, NULL);
__connman_ipconfig_set_prefixlen(ipconfig, 0);
if (dhcp->callback != NULL && callback)
dhcp->callback(dhcp->network, FALSE, NULL);
out:
dhcp_free(dhcp);
}
static gboolean dhcp_retry_cb(gpointer user_data)
{
struct connman_dhcp *dhcp = user_data;
dhcp->timeout = 0;
g_dhcp_client_start(dhcp->dhcp_client,
__connman_ipconfig_get_dhcp_address(dhcp->ipconfig));
return FALSE;
}
int __connman_dhcp_start(struct connman_ipconfig *ipconfig,
struct connman_network *network, dhcp_cb callback,
gpointer user_data)
{
const char *last_addr = NULL;
struct connman_dhcp *dhcp;
int err;
DBG("");
if (network) {
struct connman_service *service;
service = connman_service_lookup_from_network(network);
if (!service)
return -EINVAL;
}
last_addr = __connman_ipconfig_get_dhcp_address(ipconfig);
dhcp = g_hash_table_lookup(ipconfig_table, ipconfig);
if (!dhcp) {
dhcp = g_try_new0(struct connman_dhcp, 1);
if (!dhcp)
return -ENOMEM;
dhcp->ipconfig = ipconfig;
__connman_ipconfig_ref(ipconfig);
if (network) {
dhcp->network = network;
connman_network_ref(network);
}
err = dhcp_initialize(dhcp);
if (err < 0) {
if (network)
connman_network_unref(network);
g_free(dhcp);
return err;
}
g_hash_table_insert(ipconfig_table, ipconfig, dhcp);
}
