static void
nm_dhcp_manager_handle_event (DBusGProxy *proxy,
GHashTable *options,
gpointer user_data)
{
NMDHCPManager *manager;
NMDHCPManagerPrivate *priv;
NMDHCPClient *client;
char *iface = NULL;
char *pid_str = NULL;
char *reason = NULL;
unsigned long temp;
manager = NM_DHCP_MANAGER (user_data);
priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
iface = get_option (options, "interface");
if (iface == NULL) {
nm_log_warn (LOGD_DHCP, "DHCP event didn't have associated interface.");
goto out;
}
pid_str = get_option (options, "pid");
if (pid_str == NULL) {
nm_log_warn (LOGD_DHCP, "DHCP event didn't have associated PID.");
goto out;
}
temp = strtoul (pid_str, NULL, 10);
if ((temp == ULONG_MAX) && (errno == ERANGE)) {
nm_log_warn (LOGD_DHCP, "couldn't convert PID");
goto out;
}
client = get_client_for_pid (manager, (GPid) temp);
if (client == NULL) {
nm_log_warn (LOGD_DHCP, "(pid %d) unhandled DHCP event for interface %s", temp, iface);
goto out;
}
if (strcmp (iface, nm_dhcp_client_get_iface (client))) {
nm_log_warn (LOGD_DHCP, "(pid %d) received DHCP event from unexpected interface '%s' (expected '%s')",
temp, iface, nm_dhcp_client_get_iface (client));
goto out;
}
reason = get_option (options, "reason");
if (reason == NULL) {
nm_log_warn (LOGD_DHCP, "(pid %d) DHCP event didn't have a reason", temp);
goto out;
}
nm_dhcp_client_new_options (client, options, reason);
out:
g_free (iface);
g_free (pid_str);
g_free (reason);
}
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 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 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
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
stop (NMDhcpClient *client, gboolean release, const GByteArray *duid)
{
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (client);
int r = 0;
if (priv->client4)
r = sd_dhcp_client_stop (priv->client4);
else if (priv->client6)
r = sd_dhcp6_client_stop (priv->client6);
if (r) {
nm_log_warn (priv->client6 ? LOGD_DHCP6 : LOGD_DHCP4,
"(%s): failed to stop DHCP client (%d)",
nm_dhcp_client_get_iface (client),
r);
}
}
static gboolean
ip6_start (NMDhcpClient *client,
const char *dhcp_anycast_addr,
const struct in6_addr *ll_addr,
gboolean info_only,
NMSettingIP6ConfigPrivacy privacy,
const GByteArray *duid)
{
NMDhcpSystemd *self = NM_DHCP_SYSTEMD (client);
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (client);
const GByteArray *hwaddr;
int r, i;
g_assert (priv->client4 == NULL);
g_assert (priv->client6 == NULL);
g_return_val_if_fail (duid != NULL, FALSE);
g_free (priv->lease_file);
priv->lease_file = get_leasefile_path (iface, nm_dhcp_client_get_uuid (client), TRUE);
priv->info_only = info_only;
r = sd_dhcp6_client_new (&priv->client6);
if (r < 0) {
_LOGW ("failed to create client (%d)", r);
return FALSE;
}
_LOGT ("dhcp-client6: set %p", priv->client4);
if (info_only)
sd_dhcp6_client_set_information_request (priv->client6, 1);
/* NM stores the entire DUID which includes the uint16 "type", while systemd
* wants the type passed separately from the following data.
*/
r = sd_dhcp6_client_set_duid (priv->client6,
ntohs (((const guint16 *) duid->data)[0]),
duid->data + 2,
duid->len - 2);
if (r < 0) {
_LOGW ("failed to set DUID (%d)", r);
return FALSE;
}
r = sd_dhcp6_client_attach_event (priv->client6, NULL, 0);
if (r < 0) {
_LOGW ("failed to attach event (%d)", r);
goto error;
}
hwaddr = nm_dhcp_client_get_hw_addr (client);
if (hwaddr) {
r = sd_dhcp6_client_set_mac (priv->client6,
hwaddr->data,
hwaddr->len,
get_arp_type (hwaddr));
if (r < 0) {
_LOGW ("failed to set MAC address (%d)", r);
goto error;
}
}
r = sd_dhcp6_client_set_index (priv->client6, nm_dhcp_client_get_ifindex (client));
if (r < 0) {
_LOGW ("failed to set ifindex (%d)", r);
goto error;
}
r = sd_dhcp6_client_set_callback (priv->client6, dhcp6_event_cb, client);
if (r < 0) {
_LOGW ("failed to set callback (%d)", r);
goto error;
}
/* Add requested options */
for (i = 0; dhcp6_requests[i].name; i++) {
if (dhcp6_requests[i].include)
sd_dhcp6_client_set_request_option (priv->client6, dhcp6_requests[i].num);
}
r = sd_dhcp6_client_set_local_address (priv->client6, ll_addr);
if (r < 0) {
_LOGW ("failed to set local address (%d)", r);
goto error;
}
r = sd_dhcp6_client_start (priv->client6);
if (r < 0) {
_LOGW ("failed to start client (%d)", r);
goto error;
}
return TRUE;
error:
sd_dhcp6_client_unref (priv->client6);
priv->client6 = NULL;
return FALSE;
}
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);
}
}
static gboolean
ip4_start (NMDhcpClient *client, const char *dhcp_anycast_addr, const char *last_ip4_address)
{
NMDhcpSystemd *self = NM_DHCP_SYSTEMD (client);
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (client);
const GByteArray *hwaddr;
sd_dhcp_lease *lease = NULL;
GBytes *override_client_id;
const uint8_t *client_id = NULL;
size_t client_id_len = 0;
struct in_addr last_addr = { 0 };
const char *hostname, *fqdn;
int r, i;
gboolean success = FALSE;
guint16 arp_type;
g_assert (priv->client4 == NULL);
g_assert (priv->client6 == NULL);
g_free (priv->lease_file);
priv->lease_file = get_leasefile_path (iface, nm_dhcp_client_get_uuid (client), FALSE);
r = sd_dhcp_client_new (&priv->client4);
if (r < 0) {
_LOGW ("failed to create client (%d)", r);
return FALSE;
}
_LOGT ("dhcp-client4: set %p", priv->client4);
r = sd_dhcp_client_attach_event (priv->client4, NULL, 0);
if (r < 0) {
_LOGW ("failed to attach event (%d)", r);
goto error;
}
hwaddr = nm_dhcp_client_get_hw_addr (client);
if (hwaddr) {
arp_type= get_arp_type (hwaddr);
if (arp_type == ARPHRD_NONE) {
_LOGW ("failed to determine ARP type");
goto error;
}
r = sd_dhcp_client_set_mac (priv->client4,
hwaddr->data,
hwaddr->len,
arp_type);
if (r < 0) {
_LOGW ("failed to set MAC address (%d)", r);
goto error;
}
}
r = sd_dhcp_client_set_index (priv->client4, nm_dhcp_client_get_ifindex (client));
if (r < 0) {
_LOGW ("failed to set ifindex (%d)", r);
goto error;
}
r = sd_dhcp_client_set_callback (priv->client4, dhcp_event_cb, client);
if (r < 0) {
_LOGW ("failed to set callback (%d)", r);
goto error;
}
r = sd_dhcp_client_set_request_broadcast (priv->client4, true);
if (r < 0) {
_LOGW ("failed to enable broadcast mode (%d)", r);
goto error;
}
dhcp_lease_load (&lease, priv->lease_file);
if (last_ip4_address)
inet_pton (AF_INET, last_ip4_address, &last_addr);
else if (lease)
sd_dhcp_lease_get_address (lease, &last_addr);
if (last_addr.s_addr) {
r = sd_dhcp_client_set_request_address (priv->client4, &last_addr);
if (r < 0) {
_LOGW ("failed to set last IPv4 address (%d)", r);
goto error;
}
}
override_client_id = nm_dhcp_client_get_client_id (client);
if (override_client_id) {
client_id = g_bytes_get_data (override_client_id, &client_id_len);
g_assert (client_id && client_id_len);
sd_dhcp_client_set_client_id (priv->client4,
client_id[0],
client_id + 1,
client_id_len - 1);
} else if (lease) {
r = sd_dhcp_lease_get_client_id (lease, (const void **) &client_id, &client_id_len);
if (r == 0 && client_id_len) {
sd_dhcp_client_set_client_id (priv->client4,
client_id[0],
client_id + 1,
client_id_len - 1);
_save_client_id (NM_DHCP_SYSTEMD (client),
client_id[0],
client_id + 1,
client_id_len - 1);
}
}
/* Add requested options */
for (i = 0; dhcp4_requests[i].name; i++) {
if (dhcp4_requests[i].include)
sd_dhcp_client_set_request_option (priv->client4, dhcp4_requests[i].num);
}
hostname = nm_dhcp_client_get_hostname (client);
if (hostname) {
char *prefix, *dot;
prefix = strdup (hostname);
dot = strchr (prefix, '.');
/* get rid of the domain */
if (dot)
*dot = '\0';
r = sd_dhcp_client_set_hostname (priv->client4, prefix);
free (prefix);
if (r < 0) {
_LOGW ("failed to set DHCP hostname (%d)", r);
goto error;
}
}
fqdn = nm_dhcp_client_get_fqdn (client);
if (fqdn) {
r = sd_dhcp_client_set_hostname (priv->client4, fqdn);
if (r < 0) {
_LOGW ("failed to set DHCP FQDN (%d)", r);
goto error;
}
}
r = sd_dhcp_client_start (priv->client4);
if (r < 0) {
_LOGW ("failed to start client (%d)", r);
goto error;
}
nm_dhcp_client_start_timeout (client);
success = TRUE;
error:
sd_dhcp_lease_unref (lease);
if (!success)
priv->client4 = sd_dhcp_client_unref (priv->client4);
return success;
}
static gboolean
ip4_start (NMDhcpClient *client,
const char *dhcp_client_id,
const char *dhcp_anycast_addr,
const char *hostname)
{
NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (client);
GPtrArray *argv = NULL;
pid_t pid = -1;
GError *error = NULL;
char *pid_contents = NULL, *binary_name, *cmd_str;
const char *iface;
g_return_val_if_fail (priv->pid_file == NULL, FALSE);
iface = nm_dhcp_client_get_iface (client);
/* dhcpcd does not allow custom pidfiles; the pidfile is always
* RUNDIR "dhcpcd-<ifname>.pid".
*/
priv->pid_file = g_strdup_printf (RUNDIR "/dhcpcd-%s.pid", iface);
if (!g_file_test (priv->path, G_FILE_TEST_EXISTS)) {
nm_log_warn (LOGD_DHCP4, "%s does not exist.", priv->path);
return FALSE;
}
/* Kill any existing dhcpcd from the pidfile */
binary_name = g_path_get_basename (priv->path);
nm_dhcp_client_stop_existing (priv->pid_file, binary_name);
g_free (binary_name);
argv = g_ptr_array_new ();
g_ptr_array_add (argv, (gpointer) priv->path);
g_ptr_array_add (argv, (gpointer) "-B"); /* Don't background on lease (disable fork()) */
g_ptr_array_add (argv, (gpointer) "-K"); /* Disable built-in carrier detection */
g_ptr_array_add (argv, (gpointer) "-L"); /* Disable built-in IPv4LL since we use avahi-autoipd */
/* --noarp. Don't request or claim the address by ARP; this also disables IPv4LL. */
g_ptr_array_add (argv, (gpointer) "-A");
g_ptr_array_add (argv, (gpointer) "-G"); /* Let NM handle routing */
g_ptr_array_add (argv, (gpointer) "-c"); /* Set script file */
g_ptr_array_add (argv, (gpointer) nm_dhcp_helper_path);
#ifdef DHCPCD_SUPPORTS_IPV6
/* IPv4-only for now. NetworkManager knows better than dhcpcd when to
* run IPv6, and dhcpcd's automatic Router Solicitations cause problems
* with devices that don't expect them.
*/
g_ptr_array_add (argv, (gpointer) "-4");
#endif
if (hostname && strlen (hostname)) {
g_ptr_array_add (argv, (gpointer) "-h"); /* Send hostname to DHCP server */
g_ptr_array_add (argv, (gpointer) hostname );
}
g_ptr_array_add (argv, (gpointer) iface);
g_ptr_array_add (argv, NULL);
cmd_str = g_strjoinv (" ", (gchar **) argv->pdata);
nm_log_dbg (LOGD_DHCP4, "running: %s", cmd_str);
g_free (cmd_str);
if (g_spawn_async (NULL, (char **) argv->pdata, NULL, G_SPAWN_DO_NOT_REAP_CHILD,
&dhcpcd_child_setup, NULL, &pid, &error)) {
g_assert (pid > 0);
nm_log_info (LOGD_DHCP4, "dhcpcd started with pid %d", pid);
nm_dhcp_client_watch_child (client, pid);
} else {
nm_log_warn (LOGD_DHCP4, "dhcpcd failed to start. error: '%s'", error->message);
g_error_free (error);
}
g_free (pid_contents);
g_ptr_array_free (argv, TRUE);
return pid > 0 ? TRUE : FALSE;
}
static GPid
ip4_start (NMDHCPClient *client,
NMSettingIP4Config *s_ip4,
guint8 *dhcp_anycast_addr,
const char *hostname)
{
NMDHCPDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (client);
GPtrArray *argv = NULL;
GPid pid = -1;
GError *error = NULL;
char *pid_contents = NULL, *binary_name, *cmd_str;
const char *iface, *uuid;
g_return_val_if_fail (priv->pid_file == NULL, -1);
iface = nm_dhcp_client_get_iface (client);
uuid = nm_dhcp_client_get_uuid (client);
priv->pid_file = g_strdup_printf (NMSTATEDIR "/dhcpcd-%s.pid", iface);
if (!g_file_test (priv->path, G_FILE_TEST_EXISTS)) {
nm_log_warn (LOGD_DHCP4, "%s does not exist.", priv->path);
return -1;
}
/* Kill any existing dhcpcd from the pidfile */
binary_name = g_path_get_basename (priv->path);
nm_dhcp_client_stop_existing (priv->pid_file, binary_name);
g_free (binary_name);
argv = g_ptr_array_new ();
g_ptr_array_add (argv, (gpointer) priv->path);
g_ptr_array_add (argv, (gpointer) "-B"); /* Don't background on lease (disable fork()) */
g_ptr_array_add (argv, (gpointer) "-K"); /* Disable built-in carrier detection */
g_ptr_array_add (argv, (gpointer) "-L"); /* Disable built-in IPv4LL since we use avahi-autoipd */
g_ptr_array_add (argv, (gpointer) "-G"); /* Let NM handle routing */
g_ptr_array_add (argv, (gpointer) "-c"); /* Set script file */
g_ptr_array_add (argv, (gpointer) nm_dhcp_helper_path);
if (hostname && strlen (hostname)) {
g_ptr_array_add (argv, (gpointer) "-h"); /* Send hostname to DHCP server */
g_ptr_array_add (argv, (gpointer) hostname );
}
g_ptr_array_add (argv, (gpointer) iface);
g_ptr_array_add (argv, NULL);
cmd_str = g_strjoinv (" ", (gchar **) argv->pdata);
nm_log_dbg (LOGD_DHCP4, "running: %s", cmd_str);
g_free (cmd_str);
if (!g_spawn_async (NULL, (char **) argv->pdata, NULL, G_SPAWN_DO_NOT_REAP_CHILD,
&dhcpcd_child_setup, NULL, &pid, &error)) {
nm_log_warn (LOGD_DHCP4, "dhcpcd failed to start. error: '%s'", error->message);
g_error_free (error);
pid = -1;
} else
nm_log_info (LOGD_DHCP4, "dhcpcd started with pid %d", pid);
g_free (pid_contents);
g_ptr_array_free (argv, TRUE);
return pid;
}
static gboolean
ip4_start (NMDhcpClient *client, const char *dhcp_anycast_addr, const char *last_ip4_address)
{
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (client);
const char *iface = nm_dhcp_client_get_iface (client);
const GByteArray *hwaddr;
sd_dhcp_lease *lease = NULL;
GBytes *override_client_id;
const uint8_t *client_id = NULL;
size_t client_id_len = 0;
struct in_addr last_addr = { 0 };
const char *hostname;
int r, i;
gboolean success = FALSE;
g_assert (priv->client4 == NULL);
g_assert (priv->client6 == NULL);
g_free (priv->lease_file);
priv->lease_file = get_leasefile_path (iface, nm_dhcp_client_get_uuid (client), FALSE);
r = sd_dhcp_client_new (&priv->client4);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to create DHCPv4 client (%d)", iface, r);
return FALSE;
}
r = sd_dhcp_client_attach_event (priv->client4, NULL, 0);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to attach DHCP event (%d)", iface, r);
goto error;
}
hwaddr = nm_dhcp_client_get_hw_addr (client);
if (hwaddr) {
r = sd_dhcp_client_set_mac (priv->client4,
hwaddr->data,
hwaddr->len,
get_arp_type (hwaddr));
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP MAC address (%d)", iface, r);
goto error;
}
}
r = sd_dhcp_client_set_index (priv->client4, nm_dhcp_client_get_ifindex (client));
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP ifindex (%d)", iface, r);
goto error;
}
r = sd_dhcp_client_set_callback (priv->client4, dhcp_event_cb, client);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP callback (%d)", iface, r);
goto error;
}
r = sd_dhcp_client_set_request_broadcast (priv->client4, true);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP broadcast (%d)", iface, r);
goto error;
}
dhcp_lease_load (&lease, priv->lease_file);
if (last_ip4_address)
inet_pton (AF_INET, last_ip4_address, &last_addr);
else if (lease)
sd_dhcp_lease_get_address (lease, &last_addr);
if (last_addr.s_addr) {
r = sd_dhcp_client_set_request_address (priv->client4, &last_addr);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set last IPv4 address (%d)", iface, r);
goto error;
}
}
override_client_id = nm_dhcp_client_get_client_id (client);
if (override_client_id) {
client_id = g_bytes_get_data (override_client_id, &client_id_len);
g_assert (client_id && client_id_len);
sd_dhcp_client_set_client_id (priv->client4,
client_id[0],
client_id + 1,
client_id_len - 1);
} else if (lease) {
r = sd_dhcp_lease_get_client_id (lease, (const void **) &client_id, &client_id_len);
if (r == 0 && client_id_len) {
sd_dhcp_client_set_client_id (priv->client4,
client_id[0],
client_id + 1,
client_id_len - 1);
_save_client_id (NM_DHCP_SYSTEMD (client),
client_id[0],
client_id + 1,
client_id_len - 1);
}
}
/* Add requested options */
for (i = 0; dhcp4_requests[i].name; i++) {
if (dhcp4_requests[i].include)
sd_dhcp_client_set_request_option (priv->client4, dhcp4_requests[i].num);
}
hostname = nm_dhcp_client_get_hostname (client);
if (hostname) {
r = sd_dhcp_client_set_hostname (priv->client4, hostname);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP hostname (%d)", iface, r);
goto error;
}
}
r = sd_dhcp_client_start (priv->client4);
if (r < 0) {
nm_log_warn (LOGD_DHCP4, "(%s): failed to start DHCP (%d)", iface, r);
goto error;
}
success = TRUE;
error:
sd_dhcp_lease_unref (lease);
if (!success)
priv->client4 = sd_dhcp_client_unref (priv->client4);
return success;
}
