static void
dhcp6_event_cb (sd_dhcp6_client *client, int event, gpointer user_data)
{
NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
g_assert (priv->client6 == client);
nm_log_dbg (LOGD_DHCP6, "(%s): DHCPv6 client event %d", iface, event);
switch (event) {
case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_TIMEOUT, NULL, NULL);
break;
case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
case SD_DHCP6_CLIENT_EVENT_STOP:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
break;
case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
bound6_handle (self);
break;
default:
nm_log_warn (LOGD_DHCP6, "(%s): unhandled DHCPv6 event %d", iface, event);
break;
}
}
static void
dhcp6_event_cb (sd_dhcp6_client *client, int event, gpointer user_data)
{
NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
g_assert (priv->client6 == client);
_LOGD ("client event %d", event);
switch (event) {
case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_TIMEOUT, NULL, NULL);
break;
case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
case SD_DHCP6_CLIENT_EVENT_STOP:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
break;
case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST:
bound6_handle (self);
break;
default:
_LOGW ("unhandled event %d", event);
break;
}
}
static void
dhcp_event_cb (sd_dhcp_client *client, int event, gpointer user_data)
{
NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
g_assert (priv->client4 == client);
_LOGD ("client event %d", event);
switch (event) {
case SD_DHCP_CLIENT_EVENT_EXPIRED:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_EXPIRE, NULL, NULL);
break;
case SD_DHCP_CLIENT_EVENT_STOP:
nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
break;
case SD_DHCP_CLIENT_EVENT_RENEW:
case SD_DHCP_CLIENT_EVENT_IP_CHANGE:
case SD_DHCP_CLIENT_EVENT_IP_ACQUIRE:
bound4_handle (self);
break;
default:
_LOGW ("unhandled DHCP event %d", event);
break;
}
}
static void
bound6_handle (NMDhcpSystemd *self)
{
/* not yet supported... */
nm_log_warn (LOGD_DHCP6, "(%s): internal DHCP does not yet support DHCPv6",
nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self)));
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
}
static void
daemon_watch_cb (GPid pid, gint status, gpointer user_data)
{
NMDHCPClient *self = NM_DHCP_CLIENT (user_data);
NMDHCPClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
NMDHCPState new_state;
if (priv->ipv6) {
nm_log_info (LOGD_DHCP6, "(%s): DHCPv6 client pid %d exited with status %d",
priv->iface, pid,
WIFEXITED (status) ? WEXITSTATUS (status) : -1);
} else {
nm_log_info (LOGD_DHCP4, "(%s): DHCPv4 client pid %d exited with status %d",
priv->iface, pid,
WIFEXITED (status) ? WEXITSTATUS (status) : -1);
}
if (!WIFEXITED (status)) {
new_state = DHC_ABEND;
nm_log_warn (LOGD_DHCP, "DHCP client died abnormally");
} else
new_state = DHC_END;
watch_cleanup (self);
timeout_cleanup (self);
priv->dead = TRUE;
dhcp_client_set_state (self, new_state, TRUE, FALSE);
}
static NMDHCPClient *
get_client_for_iface (NMDHCPManager *manager,
const char *iface,
gboolean ip6)
{
NMDHCPManagerPrivate *priv;
GHashTableIter iter;
gpointer value;
g_return_val_if_fail (manager != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_MANAGER (manager), NULL);
g_return_val_if_fail (iface, NULL);
priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
g_hash_table_iter_init (&iter, priv->clients);
while (g_hash_table_iter_next (&iter, NULL, &value)) {
NMDHCPClient *candidate = NM_DHCP_CLIENT (value);
if ( !strcmp (iface, nm_dhcp_client_get_iface (candidate))
&& (nm_dhcp_client_get_ipv6 (candidate) == ip6))
return candidate;
}
return NULL;
}
static gboolean
signal_remove (gpointer user_data)
{
NMDHCPClient *self = NM_DHCP_CLIENT (user_data);
NM_DHCP_CLIENT_GET_PRIVATE (self)->remove_id = 0;
g_signal_emit (G_OBJECT (self), signals[REMOVE], 0);
return FALSE;
}
static void
_save_client_id (NMDhcpSystemd *self,
uint8_t type,
const uint8_t *client_id,
size_t len)
{
gs_unref_bytes GBytes *b = NULL;
gs_free char *buf = NULL;
g_return_if_fail (self != NULL);
g_return_if_fail (client_id != NULL);
g_return_if_fail (len > 0);
if (!nm_dhcp_client_get_client_id (NM_DHCP_CLIENT (self))) {
buf = g_malloc (len + 1);
buf[0] = type;
memcpy (buf + 1, client_id, len);
b = g_bytes_new (buf, len + 1);
nm_dhcp_client_set_client_id (NM_DHCP_CLIENT (self), b);
}
}
static gboolean
daemon_timeout (gpointer user_data)
{
NMDHCPClient *self = NM_DHCP_CLIENT (user_data);
NMDHCPClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
if (priv->ipv6) {
nm_log_warn (LOGD_DHCP6, "(%s): DHCPv6 request timed out.", priv->iface);
} else {
nm_log_warn (LOGD_DHCP4, "(%s): DHCPv4 request timed out.", priv->iface);
}
g_signal_emit (G_OBJECT (self), signals[TIMEOUT], 0);
return FALSE;
}
static void
dispose (GObject *object)
{
NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE (object);
GList *values, *iter;
if (priv->clients) {
values = g_hash_table_get_values (priv->clients);
for (iter = values; iter; iter = g_list_next (iter))
remove_client (NM_DHCP_MANAGER (object), NM_DHCP_CLIENT (iter->data));
g_list_free (values);
}
G_OBJECT_CLASS (nm_dhcp_manager_parent_class)->dispose (object);
}
static void
bound4_handle (NMDhcpSystemd *self)
{
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
sd_dhcp_lease *lease;
NMIP4Config *ip4_config;
GHashTable *options;
GError *error = NULL;
int r;
r = sd_dhcp_client_get_lease (priv->client4, &lease);
if (r < 0 || !lease) {
_LOGW ("no lease!");
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
return;
}
_LOGD ("lease available");
options = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
ip4_config = lease_to_ip4_config (iface,
nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
lease,
options,
nm_dhcp_client_get_priority (NM_DHCP_CLIENT (self)),
TRUE,
&error);
if (ip4_config) {
const uint8_t *client_id = NULL;
size_t client_id_len = 0;
uint8_t type = 0;
add_requests_to_options (options, dhcp4_requests);
dhcp_lease_save (lease, priv->lease_file);
sd_dhcp_client_get_client_id(priv->client4, &type, &client_id, &client_id_len);
if (client_id)
_save_client_id (self, type, client_id, client_id_len);
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
NM_DHCP_STATE_BOUND,
G_OBJECT (ip4_config),
options);
} else {
_LOGW ("%s", error->message);
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
g_clear_error (&error);
}
g_hash_table_destroy (options);
g_clear_object (&ip4_config);
}
static void
dispose (GObject *object)
{
NMDHCPClient *self = NM_DHCP_CLIENT (object);
NMDHCPClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
/* Stopping the client is left up to the controlling device
* explicitly since we may want to quit NetworkManager but not terminate
* the DHCP client.
*/
if (priv->remove_id)
g_source_remove (priv->remove_id);
g_hash_table_destroy (priv->options);
g_free (priv->iface);
G_OBJECT_CLASS (nm_dhcp_client_parent_class)->dispose (object);
}
static NMDHCPClient *
get_client_for_pid (NMDHCPManager *manager, GPid pid)
{
NMDHCPManagerPrivate *priv;
GHashTableIter iter;
gpointer value;
g_return_val_if_fail (manager != NULL, NULL);
g_return_val_if_fail (NM_IS_DHCP_MANAGER (manager), NULL);
priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
g_hash_table_iter_init (&iter, priv->clients);
while (g_hash_table_iter_next (&iter, NULL, &value)) {
NMDHCPClient *candidate = NM_DHCP_CLIENT (value);
if (nm_dhcp_client_get_pid (candidate) == pid)
return candidate;
}
return NULL;
}
static NMDhcpClient *
get_client_for_ifindex (NMDhcpManager *manager, int ifindex, gboolean ip6)
{
NMDhcpManagerPrivate *priv;
GHashTableIter iter;
gpointer value;
g_return_val_if_fail (NM_IS_DHCP_MANAGER (manager), NULL);
g_return_val_if_fail (ifindex > 0, NULL);
priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
g_hash_table_iter_init (&iter, priv->clients);
while (g_hash_table_iter_next (&iter, NULL, &value)) {
NMDhcpClient *candidate = NM_DHCP_CLIENT (value);
if ( nm_dhcp_client_get_ifindex (candidate) == ifindex
&& nm_dhcp_client_get_ipv6 (candidate) == ip6)
return candidate;
}
return NULL;
}
static NMIP6Config *
lease_to_ip6_config (const char *iface,
int ifindex,
sd_dhcp6_lease *lease,
GHashTable *options,
gboolean log_lease,
gboolean info_only,
GError **error)
{
struct in6_addr tmp_addr, *dns;
uint32_t lft_pref, lft_valid;
NMIP6Config *ip6_config;
const char *addr_str;
char **domains;
GString *str;
int num, i;
gint32 ts;
g_return_val_if_fail (lease, NULL);
ip6_config = nm_ip6_config_new (ifindex);
ts = nm_utils_get_monotonic_timestamp_s ();
str = g_string_sized_new (30);
/* Addresses */
sd_dhcp6_lease_reset_address_iter (lease);
while (sd_dhcp6_lease_get_address (lease, &tmp_addr, &lft_pref, &lft_valid) >= 0) {
NMPlatformIP6Address address = {
.plen = 128,
.address = tmp_addr,
.timestamp = ts,
.lifetime = lft_valid,
.preferred = lft_pref,
.addr_source = NM_IP_CONFIG_SOURCE_DHCP,
};
nm_ip6_config_add_address (ip6_config, &address);
addr_str = nm_utils_inet6_ntop (&tmp_addr, NULL);
g_string_append_printf (str, "%s%s", str->len ? " " : "", addr_str);
LOG_LEASE (LOGD_DHCP6,
" address %s",
nm_platform_ip6_address_to_string (&address, NULL, 0));
};
if (str->len) {
add_option (options, dhcp6_requests, DHCP6_OPTION_IP_ADDRESS, str->str);
g_string_set_size (str , 0);
}
if (!info_only && nm_ip6_config_get_num_addresses (ip6_config) == 0) {
g_string_free (str, TRUE);
g_object_unref (ip6_config);
g_set_error_literal (error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_FAILED,
"no address received in managed mode");
return NULL;
}
/* DNS servers */
num = sd_dhcp6_lease_get_dns (lease, &dns);
if (num > 0) {
for (i = 0; i < num; i++) {
nm_ip6_config_add_nameserver (ip6_config, &dns[i]);
addr_str = nm_utils_inet6_ntop (&dns[i], NULL);
g_string_append_printf (str, "%s%s", str->len ? " " : "", addr_str);
LOG_LEASE (LOGD_DHCP6, " nameserver %s", addr_str);
}
add_option (options, dhcp6_requests, SD_DHCP6_OPTION_DNS_SERVERS, str->str);
g_string_set_size (str, 0);
}
/* Search domains */
num = sd_dhcp6_lease_get_domains (lease, &domains);
if (num > 0) {
for (i = 0; i < num; i++) {
nm_ip6_config_add_search (ip6_config, domains[i]);
g_string_append_printf (str, "%s%s", str->len ? " " : "", domains[i]);
LOG_LEASE (LOGD_DHCP6, " domain name '%s'", domains[i]);
}
add_option (options, dhcp6_requests, SD_DHCP6_OPTION_DOMAIN_LIST, str->str);
g_string_set_size (str, 0);
}
g_string_free (str, TRUE);
return ip6_config;
}
static void
bound6_handle (NMDhcpSystemd *self)
{
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
gs_unref_object NMIP6Config *ip6_config = NULL;
gs_unref_hashtable GHashTable *options = NULL;
gs_free_error GError *error = NULL;
sd_dhcp6_lease *lease;
int r;
r = sd_dhcp6_client_get_lease (priv->client6, &lease);
if (r < 0 || !lease) {
_LOGW (" no lease!");
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
return;
}
_LOGD ("lease available");
options = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
ip6_config = lease_to_ip6_config (iface,
nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
lease,
options,
TRUE,
priv->info_only,
&error);
if (ip6_config) {
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
NM_DHCP_STATE_BOUND,
G_OBJECT (ip6_config),
options);
} else {
_LOGW ("%s", error->message);
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
}
}
