void
nm_dhcp_client_stop (NMDHCPClient *self, gboolean release)
{
NMDHCPClientPrivate *priv;
g_return_if_fail (self != NULL);
g_return_if_fail (NM_IS_DHCP_CLIENT (self));
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
/* Kill the DHCP client */
if (!priv->dead) {
NM_DHCP_CLIENT_GET_CLASS (self)->stop (self, release);
priv->dead = TRUE;
nm_log_info (LOGD_DHCP, "(%s): canceled DHCP transaction, DHCP client pid %d",
priv->iface, priv->pid);
}
/* And clean stuff up */
priv->pid = -1;
dhcp_client_set_state (self, DHC_END, FALSE, TRUE);
g_hash_table_remove_all (priv->options);
timeout_cleanup (self);
watch_cleanup (self);
}
gboolean
nm_dhcp_client_start_ip6 (NMDHCPClient *self,
NMSettingIP6Config *s_ip6,
guint8 *dhcp_anycast_addr,
const char *hostname,
gboolean info_only)
{
NMDHCPClientPrivate *priv;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_val_if_fail (priv->pid == -1, FALSE);
g_return_val_if_fail (priv->ipv6 == TRUE, FALSE);
g_return_val_if_fail (priv->uuid != NULL, FALSE);
priv->info_only = info_only;
nm_log_info (LOGD_DHCP, "Activation (%s) Beginning DHCPv6 transaction (timeout in %d seconds)",
priv->iface, priv->timeout);
priv->pid = NM_DHCP_CLIENT_GET_CLASS (self)->ip6_start (self, s_ip6, dhcp_anycast_addr, hostname, info_only);
if (priv->pid > 0)
start_monitor (self);
return priv->pid ? TRUE : FALSE;
}
gboolean
nm_dhcp_client_get_ipv6 (NMDHCPClient *self)
{
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
return NM_DHCP_CLIENT_GET_PRIVATE (self)->ipv6;
}
const char *
nm_dhcp_client_get_iface (NMDHCPClient *self)
{
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
return NM_DHCP_CLIENT_GET_PRIVATE (self)->iface;
}
GPid
nm_dhcp_client_get_pid (NMDHCPClient *self)
{
g_return_val_if_fail (self != NULL, -1);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), -1);
return NM_DHCP_CLIENT_GET_PRIVATE (self)->pid;
}
void
nm_dhcp_client_new_options (NMDHCPClient *self,
GHashTable *options,
const char *reason)
{
NMDHCPClientPrivate *priv;
guint32 old_state;
guint32 new_state;
g_return_if_fail (self != NULL);
g_return_if_fail (NM_IS_DHCP_CLIENT (self));
g_return_if_fail (options != NULL);
g_return_if_fail (reason != NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
old_state = priv->state;
new_state = string_to_state (reason);
/* Clear old and save new DHCP options */
g_hash_table_remove_all (priv->options);
g_hash_table_foreach (options, copy_option, priv->options);
if (old_state == new_state) {
/* dhclient will stay in the same state (or, really, provide the same
* reason) for operations like RENEW and REBIND. We need to ensure
* that triggers various DHCP lease change code, so we need to pass
* along same-state transitions for these states.
*/
if ( new_state != DHC_BOUND4
&& new_state != DHC_RENEW4
&& new_state != DHC_REBIND4
&& new_state != DHC_BOUND6
&& new_state != DHC_RENEW6
&& new_state != DHC_REBIND6)
return;
}
/* Handle changed device state */
if (state_is_bound (new_state)) {
/* Cancel the timeout if the DHCP client is now bound */
timeout_cleanup (self);
}
if (priv->ipv6) {
nm_log_info (LOGD_DHCP6, "(%s): DHCPv6 state changed %s -> %s",
priv->iface,
state_to_string (old_state),
state_to_string (new_state));
} else {
nm_log_info (LOGD_DHCP4, "(%s): DHCPv4 state changed %s -> %s",
priv->iface,
state_to_string (old_state),
state_to_string (new_state));
}
dhcp_client_set_state (self, new_state, TRUE, FALSE);
}
gboolean
nm_dhcp_client_foreach_option (NMDHCPClient *self,
GHFunc func,
gpointer user_data)
{
NMDHCPClientPrivate *priv;
GHashTableIter iter;
gpointer iterkey, itervalue;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
g_return_val_if_fail (func != NULL, FALSE);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
if (!state_is_bound (priv->state)) {
if (priv->ipv6) {
nm_log_warn (LOGD_DHCP6, "(%s): DHCPv6 client didn't bind to a lease.", priv->iface);
} else {
nm_log_warn (LOGD_DHCP4, "(%s): DHCPv4 client didn't bind to a lease.", priv->iface);
}
}
g_hash_table_iter_init (&iter, priv->options);
while (g_hash_table_iter_next (&iter, &iterkey, &itervalue)) {
const char *key = iterkey, *value = itervalue;
const char **p;
static const char *filter_options[] = {
"interface", "pid", "reason", "dhcp_message_type", NULL
};
gboolean ignore = FALSE;
/* Filter out stuff that's not actually new DHCP options */
for (p = filter_options; *p; p++) {
if (!strcmp (*p, key) || !strncmp (key, OLD_TAG, strlen (OLD_TAG))) {
ignore = TRUE;
break;
}
}
if (!ignore) {
const char *tmp_key = key;
/* Remove the "new_" prefix that dhclient passes back */
if (!strncmp (key, NEW_TAG, strlen (NEW_TAG)))
tmp_key = key + strlen (NEW_TAG);
func ((gpointer) tmp_key, (gpointer) value, user_data);
}
}
return TRUE;
}
gboolean
nm_dhcp_client_start_ip6 (NMDHCPClient *self,
NMSettingIP6Config *s_ip6,
guint8 *dhcp_anycast_addr,
const char *hostname,
gboolean info_only)
{
NMDHCPClientPrivate *priv;
char *escaped;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_val_if_fail (priv->pid == -1, FALSE);
g_return_val_if_fail (priv->ipv6 == TRUE, FALSE);
g_return_val_if_fail (priv->uuid != NULL, FALSE);
/* If we don't have one yet, read the default DUID for this DHCPv6 client
* from the client-specific persistent configuration.
*/
if (!priv->duid)
priv->duid = NM_DHCP_CLIENT_GET_CLASS (self)->get_duid (self);
if (nm_logging_level_enabled (LOGL_DEBUG)) {
escaped = escape_duid (priv->duid);
nm_log_dbg (LOGD_DHCP, "(%s): DHCPv6 DUID is '%s'", priv->iface, escaped);
g_free (escaped);
}
priv->info_only = info_only;
nm_log_info (LOGD_DHCP, "Activation (%s) Beginning DHCPv6 transaction (timeout in %d seconds)",
priv->iface, priv->timeout);
priv->pid = NM_DHCP_CLIENT_GET_CLASS (self)->ip6_start (self,
s_ip6,
dhcp_anycast_addr,
hostname,
info_only,
priv->duid);
if (priv->pid > 0)
start_monitor (self);
return priv->pid ? TRUE : FALSE;
}
void
nm_dhcp_client_new_options (NMDHCPClient *self,
GHashTable *options,
const char *reason)
{
NMDHCPClientPrivate *priv;
guint32 old_state;
guint32 new_state;
g_return_if_fail (self != NULL);
g_return_if_fail (NM_IS_DHCP_CLIENT (self));
g_return_if_fail (options != NULL);
g_return_if_fail (reason != NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
old_state = priv->state;
new_state = string_to_state (reason);
/* Clear old and save new DHCP options */
g_hash_table_remove_all (priv->options);
g_hash_table_foreach (options, copy_option, priv->options);
if (old_state == new_state)
return;
/* Handle changed device state */
if (state_is_bound (new_state)) {
/* Cancel the timeout if the DHCP client is now bound */
timeout_cleanup (self);
}
if (priv->ipv6) {
nm_log_info (LOGD_DHCP6, "(%s): DHCPv6 state changed %s -> %s",
priv->iface,
state_to_string (old_state),
state_to_string (new_state));
} else {
nm_log_info (LOGD_DHCP4, "(%s): DHCPv4 state changed %s -> %s",
priv->iface,
state_to_string (old_state),
state_to_string (new_state));
}
dhcp_client_set_state (self, new_state, TRUE, FALSE);
}
static void
stop (NMDHCPClient *self, gboolean release)
{
NMDHCPClientPrivate *priv;
g_return_if_fail (self != NULL);
g_return_if_fail (NM_IS_DHCP_CLIENT (self));
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_if_fail (priv->pid > 0);
/* Clean up the watch handler since we're explicitly killing the daemon */
watch_cleanup (self);
nm_dhcp_client_stop_pid (priv->pid, priv->iface, 0);
priv->info_only = FALSE;
}
NMIP6Config *
nm_dhcp_client_get_ip6_config (NMDHCPClient *self, gboolean test)
{
NMDHCPClientPrivate *priv;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
if (test && !state_is_bound (priv->state)) {
nm_log_warn (LOGD_DHCP6, "(%s): DHCPv6 client didn't bind to a lease.", priv->iface);
return NULL;
}
if (!g_hash_table_size (priv->options)) {
/* We never got a response from the DHCP client */
return NULL;
}
return ip6_options_to_config (self);
}
/* Given a table of DHCP options from the client, convert into an IP4Config */
static NMIP4Config *
ip4_options_to_config (NMDHCPClient *self)
{
NMDHCPClientPrivate *priv;
NMIP4Config *ip4_config = NULL;
struct in_addr tmp_addr;
NMIP4Address *addr = NULL;
char *str = NULL;
guint32 gwaddr = 0, prefix = 0;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_val_if_fail (priv->options != NULL, NULL);
ip4_config = nm_ip4_config_new ();
if (!ip4_config) {
nm_log_warn (LOGD_DHCP4, "(%s): couldn't allocate memory for an IP4Config!", priv->iface);
return NULL;
}
addr = nm_ip4_address_new ();
if (!addr) {
nm_log_warn (LOGD_DHCP4, "(%s): couldn't allocate memory for an IP4 Address!", priv->iface);
goto error;
}
str = g_hash_table_lookup (priv->options, "new_ip_address");
if (str && (inet_pton (AF_INET, str, &tmp_addr) > 0)) {
nm_ip4_address_set_address (addr, tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " address %s", str);
} else
goto error;
str = g_hash_table_lookup (priv->options, "new_subnet_mask");
if (str && (inet_pton (AF_INET, str, &tmp_addr) > 0)) {
prefix = nm_utils_ip4_netmask_to_prefix (tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " prefix %d (%s)", prefix, str);
} else {
/* Get default netmask for the IP according to appropriate class. */
prefix = nm_utils_ip4_get_default_prefix (nm_ip4_address_get_address (addr));
nm_log_info (LOGD_DHCP4, " prefix %d (default)", prefix);
}
nm_ip4_address_set_prefix (addr, prefix);
/* Routes: if the server returns classless static routes, we MUST ignore
* the 'static_routes' option.
*/
if (!ip4_process_classless_routes (priv->options, ip4_config, &gwaddr))
process_classful_routes (priv->options, ip4_config);
if (gwaddr) {
char buf[INET_ADDRSTRLEN + 1];
inet_ntop (AF_INET, &gwaddr, buf, sizeof (buf));
nm_log_info (LOGD_DHCP4, " gateway %s", buf);
nm_ip4_address_set_gateway (addr, gwaddr);
} else {
/* If the gateway wasn't provided as a classless static route with a
* subnet length of 0, try to find it using the old-style 'routers' option.
*/
str = g_hash_table_lookup (priv->options, "new_routers");
if (str) {
char **routers = g_strsplit (str, " ", 0);
char **s;
for (s = routers; *s; s++) {
/* FIXME: how to handle multiple routers? */
if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
nm_ip4_address_set_gateway (addr, tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " gateway %s", *s);
break;
} else
nm_log_warn (LOGD_DHCP4, "ignoring invalid gateway '%s'", *s);
}
g_strfreev (routers);
}
}
nm_ip4_config_take_address (ip4_config, addr);
addr = NULL;
str = g_hash_table_lookup (priv->options, "new_host_name");
if (str)
nm_log_info (LOGD_DHCP4, " hostname '%s'", str);
str = g_hash_table_lookup (priv->options, "new_domain_name_servers");
if (str) {
char **searches = g_strsplit (str, " ", 0);
char **s;
for (s = searches; *s; s++) {
if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
nm_ip4_config_add_nameserver (ip4_config, tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " nameserver '%s'", *s);
} else
nm_log_warn (LOGD_DHCP4, "ignoring invalid nameserver '%s'", *s);
}
g_strfreev (searches);
}
str = g_hash_table_lookup (priv->options, "new_domain_name");
if (str) {
char **domains = g_strsplit (str, " ", 0);
char **s;
for (s = domains; *s; s++) {
nm_log_info (LOGD_DHCP4, " domain name '%s'", *s);
nm_ip4_config_add_domain (ip4_config, *s);
}
g_strfreev (domains);
}
str = g_hash_table_lookup (priv->options, "new_domain_search");
if (str)
process_domain_search (str, ip4_add_domain_search, ip4_config);
str = g_hash_table_lookup (priv->options, "new_netbios_name_servers");
if (str) {
char **searches = g_strsplit (str, " ", 0);
char **s;
for (s = searches; *s; s++) {
if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
nm_ip4_config_add_wins (ip4_config, tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " wins '%s'", *s);
} else
nm_log_warn (LOGD_DHCP4, "ignoring invalid WINS server '%s'", *s);
}
g_strfreev (searches);
}
str = g_hash_table_lookup (priv->options, "new_interface_mtu");
if (str) {
int int_mtu;
errno = 0;
int_mtu = strtol (str, NULL, 10);
if ((errno == EINVAL) || (errno == ERANGE))
goto error;
if (int_mtu > 576)
nm_ip4_config_set_mtu (ip4_config, int_mtu);
}
str = g_hash_table_lookup (priv->options, "new_nis_domain");
if (str) {
nm_log_info (LOGD_DHCP4, " NIS domain '%s'", str);
nm_ip4_config_set_nis_domain (ip4_config, str);
}
str = g_hash_table_lookup (priv->options, "new_nis_servers");
if (str) {
char **searches = g_strsplit (str, " ", 0);
char **s;
for (s = searches; *s; s++) {
if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
nm_ip4_config_add_nis_server (ip4_config, tmp_addr.s_addr);
nm_log_info (LOGD_DHCP4, " nis '%s'", *s);
} else
nm_log_warn (LOGD_DHCP4, "ignoring invalid NIS server '%s'", *s);
}
g_strfreev (searches);
}
return ip4_config;
error:
if (addr)
nm_ip4_address_unref (addr);
g_object_unref (ip4_config);
return NULL;
}
/* Given a table of DHCP options from the client, convert into an IP6Config */
static NMIP6Config *
ip6_options_to_config (NMDHCPClient *self)
{
NMDHCPClientPrivate *priv;
NMIP6Config *ip6_config = NULL;
struct in6_addr tmp_addr;
NMIP6Address *addr = NULL;
char *str = NULL;
GHashTableIter iter;
gpointer key, value;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_val_if_fail (priv->options != NULL, NULL);
g_hash_table_iter_init (&iter, priv->options);
while (g_hash_table_iter_next (&iter, &key, &value)) {
nm_log_dbg (LOGD_DHCP6, "(%s): option '%s'=>'%s'",
priv->iface, (const char *) key, (const char *) value);
}
ip6_config = nm_ip6_config_new ();
if (!ip6_config) {
nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6Config!", priv->iface);
return NULL;
}
str = g_hash_table_lookup (priv->options, "new_ip6_address");
if (str) {
if (!inet_pton (AF_INET6, str, &tmp_addr)) {
nm_log_warn (LOGD_DHCP6, "(%s): DHCP returned invalid address '%s'",
priv->iface, str);
goto error;
}
addr = nm_ip6_address_new ();
g_assert (addr);
nm_ip6_address_set_address (addr, &tmp_addr);
/* DHCPv6 IA_NA assignments are single address only */
nm_ip6_address_set_prefix (addr, 128);
nm_log_info (LOGD_DHCP6, " address %s/128", str);
nm_ip6_config_take_address (ip6_config, addr);
} else if (priv->info_only == FALSE) {
/* No address in Managed mode is a hard error */
goto error;
}
str = g_hash_table_lookup (priv->options, "new_host_name");
if (str)
nm_log_info (LOGD_DHCP6, " hostname '%s'", str);
str = g_hash_table_lookup (priv->options, "new_dhcp6_name_servers");
if (str) {
char **searches = g_strsplit (str, " ", 0);
char **s;
for (s = searches; *s; s++) {
if (inet_pton (AF_INET6, *s, &tmp_addr) > 0) {
nm_ip6_config_add_nameserver (ip6_config, &tmp_addr);
nm_log_info (LOGD_DHCP6, " nameserver '%s'", *s);
} else
nm_log_warn (LOGD_DHCP6, "ignoring invalid nameserver '%s'", *s);
}
g_strfreev (searches);
}
str = g_hash_table_lookup (priv->options, "new_dhcp6_domain_search");
if (str)
process_domain_search (str, ip6_add_domain_search, ip6_config);
return ip6_config;
error:
g_object_unref (ip6_config);
return NULL;
}
/* Given a table of DHCP options from the client, convert into an IP6Config */
static NMIP6Config *
ip6_options_to_config (NMDHCPClient *self)
{
NMDHCPClientPrivate *priv;
NMIP6Config *ip6_config = NULL;
struct in6_addr tmp_addr;
NMIP6Address *addr = NULL;
char *str = NULL;
GHashTableIter iter;
gpointer key, value;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
g_return_val_if_fail (priv->options != NULL, NULL);
g_hash_table_iter_init (&iter, priv->options);
while (g_hash_table_iter_next (&iter, &key, &value)) {
nm_log_dbg (LOGD_DHCP6, "(%s): option '%s'=>'%s'",
priv->iface, (const char *) key, (const char *) value);
}
ip6_config = nm_ip6_config_new ();
if (!ip6_config) {
nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6Config!", priv->iface);
return NULL;
}
addr = nm_ip6_address_new ();
if (!addr) {
nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6 Address!", priv->iface);
goto error;
}
str = g_hash_table_lookup (priv->options, "new_ip6_address");
if (str) {
if (!inet_pton (AF_INET6, str, &tmp_addr)) {
nm_log_warn (LOGD_DHCP6, "(%s): DHCP returned invalid address '%s'",
priv->iface);
goto error;
}
nm_ip6_address_set_address (addr, &tmp_addr);
nm_log_info (LOGD_DHCP6, " address %s", str);
} else {
/* No address in managed mode is a hard error */
if (priv->info_only == FALSE)
goto error;
/* But "info-only" setups don't necessarily need an address */
nm_ip6_address_unref (addr);
addr = NULL;
}
/* Only care about prefix if we got an address */
if (addr) {
str = g_hash_table_lookup (priv->options, "new_ip6_prefixlen");
if (str) {
long unsigned int prefix;
errno = 0;
prefix = strtoul (str, NULL, 10);
if (errno != 0 || prefix > 128)
goto error;
nm_ip6_address_set_prefix (addr, (guint32) prefix);
nm_log_info (LOGD_DHCP6, " prefix %lu", prefix);
}
nm_ip6_config_take_address (ip6_config, addr);
addr = NULL;
}
str = g_hash_table_lookup (priv->options, "new_host_name");
if (str)
nm_log_info (LOGD_DHCP6, " hostname '%s'", str);
str = g_hash_table_lookup (priv->options, "new_dhcp6_name_servers");
if (str) {
char **searches = g_strsplit (str, " ", 0);
char **s;
for (s = searches; *s; s++) {
if (inet_pton (AF_INET6, *s, &tmp_addr) > 0) {
nm_ip6_config_add_nameserver (ip6_config, &tmp_addr);
nm_log_info (LOGD_DHCP6, " nameserver '%s'", *s);
} else
nm_log_warn (LOGD_DHCP6, "ignoring invalid nameserver '%s'", *s);
}
g_strfreev (searches);
}
str = g_hash_table_lookup (priv->options, "new_dhcp6_domain_search");
if (str)
process_domain_search (str, ip6_add_domain_search, ip6_config);
return ip6_config;
error:
if (addr)
nm_ip6_address_unref (addr);
g_object_unref (ip6_config);
return NULL;
}
