void
nm_modem_emit_ip6_config_result (NMModem *self,
NMIP6Config *config,
GError *error)
{
NMModemPrivate *priv = NM_MODEM_GET_PRIVATE (self);
guint i, num;
gboolean do_slaac = TRUE;
if (error) {
g_signal_emit (self, signals[IP6_CONFIG_RESULT], 0, NULL, FALSE, error);
return;
}
if (config) {
/* If the IPv6 configuration only included a Link-Local address, then
* we have to run SLAAC to get the full IPv6 configuration.
*/
num = nm_ip6_config_get_num_addresses (config);
g_assert (num > 0);
for (i = 0; i < num; i++) {
const NMPlatformIP6Address * addr = nm_ip6_config_get_address (config, i);
if (IN6_IS_ADDR_LINKLOCAL (&addr->address)) {
if (!priv->iid.id)
priv->iid.id = ((guint64 *)(&addr->address.s6_addr))[1];
} else
do_slaac = FALSE;
}
}
g_assert (config || do_slaac);
g_signal_emit (self, signals[IP6_CONFIG_RESULT], 0, config, do_slaac, NULL);
}
void
nm_ip6_config_hash (NMIP6Config *config, GChecksum *sum, gboolean dns_only)
{
guint32 i;
const struct in6_addr *in6a;
const char *s;
g_return_if_fail (config != NULL);
g_return_if_fail (sum != NULL);
if (dns_only == FALSE) {
for (i = 0; i < nm_ip6_config_get_num_addresses (config); i++) {
NMIP6Address *a = nm_ip6_config_get_address (config, i);
hash_in6addr (sum, nm_ip6_address_get_address (a));
hash_u32 (sum, nm_ip6_address_get_prefix (a));
hash_in6addr (sum, nm_ip6_address_get_gateway (a));
}
for (i = 0; i < nm_ip6_config_get_num_routes (config); i++) {
NMIP6Route *r = nm_ip6_config_get_route (config, i);
hash_in6addr (sum, nm_ip6_route_get_dest (r));
hash_u32 (sum, nm_ip6_route_get_prefix (r));
hash_in6addr (sum, nm_ip6_route_get_next_hop (r));
hash_u32 (sum, nm_ip6_route_get_metric (r));
}
in6a = nm_ip6_config_get_ptp_address (config);
if (in6a)
hash_in6addr (sum, in6a);
}
for (i = 0; i < nm_ip6_config_get_num_nameservers (config); i++)
hash_in6addr (sum, nm_ip6_config_get_nameserver (config, i));
for (i = 0; i < nm_ip6_config_get_num_domains (config); i++) {
s = nm_ip6_config_get_domain (config, i);
g_checksum_update (sum, (const guint8 *) s, strlen (s));
}
for (i = 0; i < nm_ip6_config_get_num_searches (config); i++) {
s = nm_ip6_config_get_search (config, i);
g_checksum_update (sum, (const guint8 *) s, strlen (s));
}
}
static void
update_ip6_routing_and_dns (NMPolicy *policy, gboolean force_update)
{
NMDnsIPConfigType dns_type = NM_DNS_IP_CONFIG_TYPE_BEST_DEVICE;
NMDevice *best = NULL;
NMActRequest *best_req = NULL;
NMDnsManager *dns_mgr;
GSList *devices = NULL, *iter;
#if NOT_YET
GSList *vpns;
#endif
NMIP6Config *ip6_config = NULL;
NMIP6Address *addr;
const char *ip_iface = NULL;
NMConnection *connection = NULL;
NMSettingConnection *s_con = NULL;
const char *connection_id;
best = get_best_ip6_device (policy->manager, &best_req);
if (!best)
goto out;
if (!force_update && (best == policy->default_device6))
goto out;
#if NOT_YET
/* If a VPN connection is active, it is preferred */
vpns = nm_vpn_manager_get_active_connections (policy->vpn_manager);
for (iter = vpns; iter; iter = g_slist_next (iter)) {
NMVPNConnection *candidate = NM_VPN_CONNECTION (iter->data);
NMConnection *vpn_connection;
NMSettingIP6Config *s_ip6;
gboolean can_default = TRUE;
NMVPNConnectionState vpn_state;
/* If it's marked 'never-default', don't make it default */
vpn_connection = nm_vpn_connection_get_connection (candidate);
g_assert (vpn_connection);
s_ip6 = (NMSettingIP6Config *) nm_connection_get_setting (vpn_connection, NM_TYPE_SETTING_IP6_CONFIG);
if (s_ip6 && nm_setting_ip6_config_get_never_default (s_ip6))
can_default = FALSE;
vpn_state = nm_vpn_connection_get_vpn_state (candidate);
if (can_default && (vpn_state == NM_VPN_CONNECTION_STATE_ACTIVATED)) {
NMIP6Config *parent_ip6;
NMDevice *parent;
ip_iface = nm_vpn_connection_get_ip_iface (candidate);
connection = nm_vpn_connection_get_connection (candidate);
ip6_config = nm_vpn_connection_get_ip6_config (candidate);
addr = nm_ip6_config_get_address (ip6_config, 0);
parent = nm_vpn_connection_get_parent_device (candidate);
parent_ip6 = nm_device_get_ip6_config (parent);
nm_system_replace_default_ip6_route_vpn (ip_iface,
nm_ip6_address_get_gateway (addr),
nm_vpn_connection_get_ip4_internal_gateway (candidate),
nm_ip6_config_get_mss (ip4_config),
nm_device_get_ip_iface (parent),
nm_ip6_config_get_mss (parent_ip4));
dns_type = NM_DNS_IP_CONFIG_TYPE_VPN;
}
g_object_unref (candidate);
}
g_slist_free (vpns);
#endif
/* The best device gets the default route if a VPN connection didn't */
if (!ip_iface || !ip6_config) {
connection = nm_act_request_get_connection (best_req);
ip_iface = nm_device_get_ip_iface (best);
ip6_config = nm_device_get_ip6_config (best);
g_assert (ip6_config);
addr = nm_ip6_config_get_address (ip6_config, 0);
nm_system_replace_default_ip6_route (ip_iface, nm_ip6_address_get_gateway (addr));
dns_type = NM_DNS_IP_CONFIG_TYPE_BEST_DEVICE;
}
if (!ip_iface || !ip6_config) {
nm_log_warn (LOGD_CORE, "couldn't determine IP interface (%p) or IPv6 config (%p)!",
ip_iface, ip6_config);
goto out;
}
/* Update the default active connection. Only mark the new default
* active connection after setting default = FALSE on all other connections
* first. The order is important, we don't want two connections marked
* default at the same time ever.
*/
devices = nm_manager_get_devices (policy->manager);
for (iter = devices; iter; iter = g_slist_next (iter)) {
NMDevice *dev = NM_DEVICE (iter->data);
NMActRequest *req;
req = nm_device_get_act_request (dev);
if (req && (req != best_req))
nm_act_request_set_default6 (req, FALSE);
}
dns_mgr = nm_dns_manager_get (NULL);
nm_dns_manager_add_ip6_config (dns_mgr, ip_iface, ip6_config, dns_type);
g_object_unref (dns_mgr);
/* Now set new default active connection _after_ updating DNS info, so that
* if the connection is shared dnsmasq picks up the right stuff.
*/
if (best_req)
nm_act_request_set_default6 (best_req, TRUE);
if (connection)
s_con = (NMSettingConnection *) nm_connection_get_setting (connection, NM_TYPE_SETTING_CONNECTION);
connection_id = s_con ? nm_setting_connection_get_id (s_con) : NULL;
if (connection_id) {
nm_log_info (LOGD_CORE, "Policy set '%s' (%s) as default for IPv6 routing and DNS.", connection_id, ip_iface);
} else {
nm_log_info (LOGD_CORE, "Policy set (%s) as default for IPv6 routing and DNS.", ip_iface);
}
out:
policy->default_device6 = best;
}
static void
update_system_hostname (NMPolicy *policy, NMDevice *best4, NMDevice *best6)
{
char *configured_hostname = NULL;
NMActRequest *best_req4 = NULL;
NMActRequest *best_req6 = NULL;
const char *dhcp_hostname, *p;
g_return_if_fail (policy != NULL);
if (policy->lookup) {
hostname_thread_kill (policy->lookup);
policy->lookup = NULL;
}
/* Hostname precedence order:
*
* 1) a configured hostname (from system-settings)
* 2) automatic hostname from the default device's config (DHCP, VPN, etc)
* 3) the original hostname when NM started
* 4) reverse-DNS of the best device's IPv4 address
*
*/
/* Try a persistent hostname first */
g_object_get (G_OBJECT (policy->manager), NM_MANAGER_HOSTNAME, &configured_hostname, NULL);
if (configured_hostname) {
_set_hostname (policy, TRUE, configured_hostname, "from system configuration");
g_free (configured_hostname);
return;
}
/* Try automatically determined hostname from the best device's IP config */
if (!best4)
best4 = get_best_ip4_device (policy->manager, &best_req4);
if (!best6)
best6 = get_best_ip6_device (policy->manager, &best_req6);
if (!best4 && !best6) {
/* No best device; fall back to original hostname or if there wasn't
* one, 'localhost.localdomain'
*/
_set_hostname (policy, TRUE, policy->orig_hostname, "no default device");
return;
}
if (best4) {
NMDHCP4Config *dhcp4_config;
/* Grab a hostname out of the device's DHCP4 config */
dhcp4_config = nm_device_get_dhcp4_config (best4);
if (dhcp4_config) {
p = dhcp_hostname = nm_dhcp4_config_get_option (dhcp4_config, "host_name");
if (dhcp_hostname && strlen (dhcp_hostname)) {
/* Sanity check; strip leading spaces */
while (*p) {
if (!isblank (*p++)) {
_set_hostname (policy, TRUE, dhcp_hostname, "from DHCPv4");
return;
}
}
nm_log_warn (LOGD_DNS, "DHCPv4-provided hostname '%s' looks invalid; ignoring it",
dhcp_hostname);
}
}
} else if (best6) {
NMDHCP6Config *dhcp6_config;
/* Grab a hostname out of the device's DHCP4 config */
dhcp6_config = nm_device_get_dhcp6_config (best6);
if (dhcp6_config) {
p = dhcp_hostname = nm_dhcp6_config_get_option (dhcp6_config, "host_name");
if (dhcp_hostname && strlen (dhcp_hostname)) {
/* Sanity check; strip leading spaces */
while (*p) {
if (!isblank (*p++)) {
_set_hostname (policy, TRUE, dhcp_hostname, "from DHCPv6");
return;
}
}
nm_log_warn (LOGD_DNS, "DHCPv6-provided hostname '%s' looks invalid; ignoring it",
dhcp_hostname);
}
}
}
/* If no automatically-configured hostname, try using the hostname from
* when NM started up.
*/
if (policy->orig_hostname) {
_set_hostname (policy, TRUE, policy->orig_hostname, "from system startup");
return;
}
/* No configured hostname, no automatically determined hostname, and no
* bootup hostname. Start reverse DNS of the current IPv4 or IPv6 address.
*/
if (best4) {
NMIP4Config *ip4_config;
NMIP4Address *addr4;
ip4_config = nm_device_get_ip4_config (best4);
if ( !ip4_config
|| (nm_ip4_config_get_num_nameservers (ip4_config) == 0)
|| (nm_ip4_config_get_num_addresses (ip4_config) == 0)) {
/* No valid IP4 config (!!); fall back to localhost.localdomain */
_set_hostname (policy, TRUE, NULL, "no IPv4 config");
return;
}
addr4 = nm_ip4_config_get_address (ip4_config, 0);
g_assert (addr4); /* checked for > 1 address above */
/* Start the hostname lookup thread */
policy->lookup = hostname4_thread_new (nm_ip4_address_get_address (addr4), lookup_callback, policy);
} else if (best6) {
NMIP6Config *ip6_config;
NMIP6Address *addr6;
ip6_config = nm_device_get_ip6_config (best6);
if ( !ip6_config
|| (nm_ip6_config_get_num_nameservers (ip6_config) == 0)
|| (nm_ip6_config_get_num_addresses (ip6_config) == 0)) {
/* No valid IP6 config (!!); fall back to localhost.localdomain */
_set_hostname (policy, TRUE, NULL, "no IPv6 config");
return;
}
addr6 = nm_ip6_config_get_address (ip6_config, 0);
g_assert (addr6); /* checked for > 1 address above */
/* Start the hostname lookup thread */
policy->lookup = hostname6_thread_new (nm_ip6_address_get_address (addr6), lookup_callback, policy);
}
if (!policy->lookup) {
/* Fall back to 'localhost.localdomain' */
_set_hostname (policy, TRUE, NULL, "error starting hostname thread");
}
}
static NMDevice *
get_best_ip6_device (NMManager *manager, NMActRequest **out_req)
{
GSList *devices, *iter;
NMDevice *best = NULL;
int best_prio = G_MAXINT;
g_return_val_if_fail (manager != NULL, NULL);
g_return_val_if_fail (NM_IS_MANAGER (manager), NULL);
g_return_val_if_fail (out_req != NULL, NULL);
g_return_val_if_fail (*out_req == NULL, NULL);
devices = nm_manager_get_devices (manager);
for (iter = devices; iter; iter = g_slist_next (iter)) {
NMDevice *dev = NM_DEVICE (iter->data);
NMActRequest *req;
NMConnection *connection;
NMIP6Config *ip6_config;
NMSettingIP6Config *s_ip6;
int prio;
guint i;
gboolean can_default = FALSE;
const char *method = NULL;
if (nm_device_get_state (dev) != NM_DEVICE_STATE_ACTIVATED)
continue;
ip6_config = nm_device_get_ip6_config (dev);
if (!ip6_config)
continue;
req = nm_device_get_act_request (dev);
g_assert (req);
connection = nm_act_request_get_connection (req);
g_assert (connection);
/* Never set the default route through an IPv4LL-addressed device */
s_ip6 = (NMSettingIP6Config *) nm_connection_get_setting (connection, NM_TYPE_SETTING_IP6_CONFIG);
if (s_ip6)
method = nm_setting_ip6_config_get_method (s_ip6);
if (method && !strcmp (method, NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL))
continue;
/* Make sure at least one of this device's IP addresses has a gateway */
for (i = 0; i < nm_ip6_config_get_num_addresses (ip6_config); i++) {
NMIP6Address *addr;
addr = nm_ip6_config_get_address (ip6_config, i);
if (nm_ip6_address_get_gateway (addr)) {
can_default = TRUE;
break;
}
}
if (!can_default && !NM_IS_DEVICE_MODEM (dev))
continue;
/* 'never-default' devices can't ever be the default */
if (s_ip6 && nm_setting_ip6_config_get_never_default (s_ip6))
continue;
prio = nm_device_get_priority (dev);
if (prio > 0 && prio < best_prio) {
best = dev;
best_prio = prio;
*out_req = req;
}
}
return best;
}
/* This is exactly identical to nm_utils_merge_ip4_config, with s/4/6/,
* except that we can't compare addresses with ==.
*/
void
nm_utils_merge_ip6_config (NMIP6Config *ip6_config, NMSettingIP6Config *setting)
{
int i, j;
if (!setting)
return; /* Defaults are just fine */
if (nm_setting_ip6_config_get_ignore_auto_dns (setting)) {
nm_ip6_config_reset_nameservers (ip6_config);
nm_ip6_config_reset_domains (ip6_config);
nm_ip6_config_reset_searches (ip6_config);
}
if (nm_setting_ip6_config_get_ignore_auto_routes (setting))
nm_ip6_config_reset_routes (ip6_config);
for (i = 0; i < nm_setting_ip6_config_get_num_dns (setting); i++) {
const struct in6_addr *ns;
gboolean found = FALSE;
/* Avoid dupes */
ns = nm_setting_ip6_config_get_dns (setting, i);
for (j = 0; j < nm_ip6_config_get_num_nameservers (ip6_config); j++) {
if (ip6_addresses_equal (nm_ip6_config_get_nameserver (ip6_config, j), ns)) {
found = TRUE;
break;
}
}
if (!found)
nm_ip6_config_add_nameserver (ip6_config, ns);
}
/* DNS search domains */
for (i = 0; i < nm_setting_ip6_config_get_num_dns_searches (setting); i++) {
const char *search = nm_setting_ip6_config_get_dns_search (setting, i);
gboolean found = FALSE;
/* Avoid dupes */
for (j = 0; j < nm_ip6_config_get_num_searches (ip6_config); j++) {
if (!strcmp (search, nm_ip6_config_get_search (ip6_config, j))) {
found = TRUE;
break;
}
}
if (!found)
nm_ip6_config_add_search (ip6_config, search);
}
/* IPv6 addresses */
for (i = 0; i < nm_setting_ip6_config_get_num_addresses (setting); i++) {
NMIP6Address *setting_addr = nm_setting_ip6_config_get_address (setting, i);
guint32 num;
num = nm_ip6_config_get_num_addresses (ip6_config);
for (j = 0; j < num; j++) {
NMIP6Address *cfg_addr = nm_ip6_config_get_address (ip6_config, j);
/* Dupe, override with user-specified address */
if (ip6_addresses_equal (nm_ip6_address_get_address (cfg_addr), nm_ip6_address_get_address (setting_addr))) {
nm_ip6_config_replace_address (ip6_config, j, setting_addr);
break;
}
}
if (j == num)
nm_ip6_config_add_address (ip6_config, setting_addr);
}
/* IPv6 routes */
for (i = 0; i < nm_setting_ip6_config_get_num_routes (setting); i++) {
NMIP6Route *setting_route = nm_setting_ip6_config_get_route (setting, i);
guint32 num;
num = nm_ip6_config_get_num_routes (ip6_config);
for (j = 0; j < num; j++) {
NMIP6Route *cfg_route = nm_ip6_config_get_route (ip6_config, j);
/* Dupe, override with user-specified route */
if ( ip6_addresses_equal (nm_ip6_route_get_dest (cfg_route), nm_ip6_route_get_dest (setting_route))
&& (nm_ip6_route_get_prefix (cfg_route) == nm_ip6_route_get_prefix (setting_route))
&& ip6_addresses_equal (nm_ip6_route_get_next_hop (cfg_route), nm_ip6_route_get_next_hop (setting_route))) {
nm_ip6_config_replace_route (ip6_config, j, setting_route);
break;
}
}
if (j == num)
nm_ip6_config_add_route (ip6_config, setting_route);
}
if (nm_setting_ip6_config_get_never_default (setting))
nm_ip6_config_set_never_default (ip6_config, TRUE);
}
static void
dump_ip6_to_props (NMIP6Config *ip6, GVariantBuilder *builder)
{
GVariantBuilder int_builder;
guint n, i;
const NMPlatformIP6Address *addr;
const struct in6_addr *gw_bytes;
const NMPlatformIP6Route *route;
GVariant *ip, *gw;
/* Addresses */
g_variant_builder_init (&int_builder, G_VARIANT_TYPE ("a(ayuay)"));
n = nm_ip6_config_get_num_addresses (ip6);
for (i = 0; i < n; i++) {
addr = nm_ip6_config_get_address (ip6, i);
gw_bytes = nm_ip6_config_get_gateway (ip6);
ip = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
&addr->address,
sizeof (struct in6_addr), 1);
gw = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
(i == 0 && gw_bytes) ? gw_bytes : &in6addr_any,
sizeof (struct in6_addr), 1);
g_variant_builder_add (&int_builder, "(@ayu@ay)", ip, addr->plen, gw);
}
g_variant_builder_add (builder, "{sv}",
"addresses",
g_variant_builder_end (&int_builder));
/* DNS servers */
g_variant_builder_init (&int_builder, G_VARIANT_TYPE ("aay"));
n = nm_ip6_config_get_num_nameservers (ip6);
for (i = 0; i < n; i++) {
ip = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
nm_ip6_config_get_nameserver (ip6, i),
sizeof (struct in6_addr), 1);
g_variant_builder_add (&int_builder, "@ay", ip);
}
g_variant_builder_add (builder, "{sv}",
"nameservers",
g_variant_builder_end (&int_builder));
/* Search domains */
g_variant_builder_init (&int_builder, G_VARIANT_TYPE ("as"));
n = nm_ip6_config_get_num_domains (ip6);
for (i = 0; i < n; i++)
g_variant_builder_add (&int_builder, "s", nm_ip6_config_get_domain (ip6, i));
g_variant_builder_add (builder, "{sv}",
"domains",
g_variant_builder_end (&int_builder));
/* Static routes */
g_variant_builder_init (&int_builder, G_VARIANT_TYPE ("a(ayuayu)"));
n = nm_ip6_config_get_num_routes (ip6);
for (i = 0; i < n; i++) {
route = nm_ip6_config_get_route (ip6, i);
ip = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
&route->network,
sizeof (struct in6_addr), 1);
gw = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
&route->gateway,
sizeof (struct in6_addr), 1);
g_variant_builder_add (&int_builder, "(@ayu@ayu)", ip, route->plen, gw, route->metric);
}
g_variant_builder_add (builder, "{sv}",
"routes",
g_variant_builder_end (&int_builder));
}
