/**
* 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 bool apply_dhcp_invalidate_on_network(struct connman_dhcp *dhcp)
{
struct connman_service *service;
int i;
if (!dhcp->network)
return true;
service = connman_service_lookup_from_network(dhcp->network);
if (!service) {
connman_error("Can not lookup service");
return false;
}
__connman_service_set_domainname(service, NULL);
__connman_ipconfig_set_proxy_autoconfig(dhcp->ipconfig, NULL);
if (dhcp->timeservers) {
for (i = 0; dhcp->timeservers[i]; i++) {
__connman_service_timeserver_remove(service,
dhcp->timeservers[i]);
}
g_strfreev(dhcp->timeservers);
dhcp->timeservers = NULL;
}
if (dhcp->nameservers) {
for (i = 0; dhcp->nameservers[i]; i++) {
__connman_service_nameserver_remove(service,
dhcp->nameservers[i], false);
}
g_strfreev(dhcp->nameservers);
dhcp->nameservers = NULL;
}
return true;
}
static bool apply_lease_available_on_network(GDHCPClient *dhcp_client,
struct connman_dhcp *dhcp)
{
char **nameservers, **timeservers, *pac = NULL;
struct connman_service *service;
GList *list, *option = NULL;
int ns_entries;
int i;
if (!dhcp->network)
return true;
service = connman_service_lookup_from_network(dhcp->network);
if (!service) {
connman_error("Can not lookup service");
return false;
}
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_MTU);
if (option && option->data) {
int mtu, index, err;
mtu = atoi(option->data);
if (mtu >= IPV6_MIN_MTU && mtu <= ETH_DATA_LEN) {
index = __connman_ipconfig_get_index(dhcp->ipconfig);
err = connman_inet_set_mtu(index, mtu);
DBG("MTU %d index %d err %d", mtu, index, err);
}
}
option = g_dhcp_client_get_option(dhcp_client, 252);
if (option)
pac = g_strdup(option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DNS_SERVER);
ns_entries = g_list_length(option);
nameservers = g_try_new0(char *, ns_entries + 1);
if (nameservers) {
for (i = 0, list = option;list; list = list->next, i++)
nameservers[i] = g_strdup(list->data);
nameservers[ns_entries] = NULL;
}
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DOMAIN_NAME);
if (option)
__connman_service_set_domainname(service, option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_HOST_NAME);
if (option)
__connman_service_set_hostname(service, option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_NTP_SERVER);
ns_entries = g_list_length(option);
timeservers = g_try_new0(char *, ns_entries + 1);
if (timeservers) {
for (i = 0, list = option; list; list = list->next, i++)
timeservers[i] = g_strdup(list->data);
timeservers[ns_entries] = NULL;
}
if (!compare_string_arrays(nameservers, dhcp->nameservers)) {
if (dhcp->nameservers) {
for (i = 0; dhcp->nameservers[i]; i++) {
__connman_service_nameserver_remove(service,
dhcp->nameservers[i], false);
}
g_strfreev(dhcp->nameservers);
}
dhcp->nameservers = nameservers;
for (i = 0; dhcp->nameservers && dhcp->nameservers[i]; i++) {
__connman_service_nameserver_append(service,
dhcp->nameservers[i], false);
}
} else {
g_strfreev(nameservers);
}
if (!compare_string_arrays(timeservers, dhcp->timeservers)) {
if (dhcp->timeservers) {
for (i = 0; dhcp->timeservers[i]; i++) {
__connman_service_timeserver_remove(service,
dhcp->timeservers[i]);
}
g_strfreev(dhcp->timeservers);
}
dhcp->timeservers = timeservers;
for (i = 0; dhcp->timeservers && dhcp->timeservers[i]; i++) {
__connman_service_timeserver_append(service,
dhcp->timeservers[i]);
}
} else {
g_strfreev(timeservers);
}
if (g_strcmp0(pac, dhcp->pac) != 0) {
g_free(dhcp->pac);
dhcp->pac = pac;
__connman_ipconfig_set_proxy_autoconfig(dhcp->ipconfig,
dhcp->pac);
}
if (connman_setting_get_bool("Enable6to4"))
__connman_6to4_probe(service);
return true;
}
static void lease_available_cb(GDHCPClient *dhcp_client, gpointer user_data)
{
struct connman_dhcp *dhcp = user_data;
GList *list, *option = NULL;
char *address, *netmask = NULL, *gateway = NULL;
const char *c_address, *c_gateway;
char *domainname = NULL, *hostname = NULL;
char **nameservers, *timeserver = NULL, *pac = NULL;
int ns_entries;
struct connman_ipconfig *ipconfig;
struct connman_service *service;
unsigned char prefixlen, c_prefixlen;
gboolean ip_change;
int i;
DBG("Lease available");
service = __connman_service_lookup_from_network(dhcp->network);
if (service == NULL) {
connman_error("Can not lookup service");
return;
}
ipconfig = __connman_service_get_ip4config(service);
if (ipconfig == NULL) {
connman_error("Could not lookup ipconfig");
return;
}
c_address = __connman_ipconfig_get_local(ipconfig);
c_gateway = __connman_ipconfig_get_gateway(ipconfig);
c_prefixlen = __connman_ipconfig_get_prefixlen(ipconfig);
address = g_dhcp_client_get_address(dhcp_client);
__connman_ipconfig_set_dhcp_address(ipconfig, address);
DBG("last address %s", address);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_SUBNET);
if (option != NULL)
netmask = g_strdup(option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_ROUTER);
if (option != NULL)
gateway = g_strdup(option->data);
prefixlen = __connman_ipconfig_netmask_prefix_len(netmask);
DBG("c_address %s", c_address);
if (address != NULL && c_address != NULL &&
g_strcmp0(address, c_address) != 0)
ip_change = TRUE;
else if (gateway != NULL && c_gateway != NULL &&
g_strcmp0(gateway, c_gateway) != 0)
ip_change = TRUE;
else if (prefixlen != c_prefixlen)
ip_change = TRUE;
else if (c_address == NULL || c_gateway == NULL)
ip_change = TRUE;
else
ip_change = FALSE;
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DNS_SERVER);
for (ns_entries = 0, list = option; list; list = list->next)
ns_entries += 1;
nameservers = g_try_new0(char *, ns_entries + 1);
if (nameservers != NULL) {
for (i = 0, list = option; list; list = list->next, i++)
nameservers[i] = g_strdup(list->data);
nameservers[ns_entries] = NULL;
}
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DOMAIN_NAME);
if (option != NULL)
domainname = g_strdup(option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_HOST_NAME);
if (option != NULL)
hostname = g_strdup(option->data);
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_NTP_SERVER);
if (option != NULL)
timeserver = g_strdup(option->data);
option = g_dhcp_client_get_option(dhcp_client, 252);
if (option != NULL)
pac = g_strdup(option->data);
connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_DHCP);
if (ip_change == TRUE) {
__connman_ipconfig_set_local(ipconfig, address);
__connman_ipconfig_set_prefixlen(ipconfig, prefixlen);
__connman_ipconfig_set_gateway(ipconfig, gateway);
}
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]);
}
g_strfreev(dhcp->nameservers);
}
dhcp->nameservers = nameservers;
for (i = 0; dhcp->nameservers[i] != NULL; i++) {
__connman_service_nameserver_append(service,
dhcp->nameservers[i]);
}
} else {
g_strfreev(nameservers);
}
if (g_strcmp0(timeserver, dhcp->timeserver) != 0) {
if (dhcp->timeserver != NULL) {
__connman_service_timeserver_remove(service,
dhcp->timeserver);
g_free(dhcp->timeserver);
}
dhcp->timeserver = timeserver;
if (dhcp->timeserver != NULL)
__connman_service_timeserver_append(service,
dhcp->timeserver);
}
if (g_strcmp0(pac, dhcp->pac) != 0) {
g_free(dhcp->pac);
dhcp->pac = pac;
__connman_service_set_pac(service, dhcp->pac);
}
__connman_service_set_domainname(service, domainname);
if (domainname != NULL)
__connman_utsname_set_domainname(domainname);
if (hostname != NULL)
__connman_utsname_set_hostname(hostname);
if (ip_change == TRUE)
dhcp_valid(dhcp);
__connman_6to4_probe(service);
g_free(address);
g_free(netmask);
g_free(gateway);
g_free(domainname);
g_free(hostname);
}
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 info_req_cb(GDHCPClient *dhcp_client, gpointer user_data)
{
struct connman_dhcpv6 *dhcp = user_data;
struct connman_service *service;
int entries, i;
GList *option, *list;
char **nameservers, **timeservers;
DBG("dhcpv6 information-request %p", dhcp);
service = connman_service_lookup_from_network(dhcp->network);
if (service == NULL) {
connman_error("Can not lookup service");
return;
}
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);
if (dhcp->callback != NULL) {
uint16_t status = g_dhcpv6_client_get_status(dhcp_client);
dhcp->callback(dhcp->network, status == 0 ? TRUE : FALSE);
}
}