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 dhcp4_state_changed (NMDhcpClient *client, NMDhcpState state, NMIP4Config *ip4_config, GHashTable *options, const char *event_id, gpointer user_data) { static NMIP4Config *last_config = NULL; NMIP4Config *existing; g_return_if_fail (!ip4_config || NM_IS_IP4_CONFIG (ip4_config)); nm_log_dbg (LOGD_DHCP4, "(%s): new DHCPv4 client state %d", global_opt.ifname, state); switch (state) { case NM_DHCP_STATE_BOUND: g_assert (ip4_config); existing = nm_ip4_config_capture (ifindex, FALSE); if (last_config) nm_ip4_config_subtract (existing, last_config); nm_ip4_config_merge (existing, ip4_config, NM_IP_CONFIG_MERGE_DEFAULT); if (!nm_ip4_config_commit (existing, ifindex, TRUE, global_opt.priority_v4)) nm_log_warn (LOGD_DHCP4, "(%s): failed to apply DHCPv4 config", global_opt.ifname); if (last_config) g_object_unref (last_config); last_config = nm_ip4_config_new (nm_dhcp_client_get_ifindex (client)); nm_ip4_config_replace (last_config, ip4_config, NULL); break; case NM_DHCP_STATE_TIMEOUT: case NM_DHCP_STATE_DONE: case NM_DHCP_STATE_FAIL: if (global_opt.dhcp4_required) { nm_log_warn (LOGD_DHCP4, "(%s): DHCPv4 timed out or failed, quitting...", global_opt.ifname); g_main_loop_quit (main_loop); } else nm_log_warn (LOGD_DHCP4, "(%s): DHCPv4 timed out or failed", global_opt.ifname); break; default: break; } }
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 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_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; }