src/network/networkd-network.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <net/if.h>
   4 #include <netinet/in.h>
   5 #include <linux/netdevice.h>
   6 #include <unistd.h>
   7
   8 #include "alloc-util.h"
   9 #include "conf-files.h"
  10 #include "conf-parser.h"
  11 #include "dns-domain.h"
  12 #include "fd-util.h"
  13 #include "hostname-util.h"
  14 #include "in-addr-util.h"
  15 #include "networkd-dhcp-server.h"
  16 #include "network-internal.h"
  17 #include "networkd-manager.h"
  18 #include "networkd-network.h"
  19 #include "parse-util.h"
  20 #include "path-lookup.h"
  21 #include "set.h"
  22 #include "socket-util.h"
  23 #include "stat-util.h"
  24 #include "string-table.h"
  25 #include "string-util.h"
  26 #include "strv.h"
  27 #include "tc.h"
  28 #include "util.h"
  29
  30 /* Let's assume that anything above this number is a user misconfiguration. */
  31 #define MAX_NTP_SERVERS 128
  32
  33 /* Set defaults following RFC7844 */
  34 void network_apply_anonymize_if_set(Network *network) {
  35         if (!network->dhcp_anonymize)
  36                 return;
  37         /* RFC7844 3.7
  38          SHOULD NOT send the Host Name option */
  39         network->dhcp_send_hostname = false;
  40         /* RFC7844 section 3.:
  41          MAY contain the Client Identifier option
  42          Section 3.5:
  43          clients MUST use client identifiers based solely
  44          on the link-layer address */
  45         /* NOTE: Using MAC, as it does not reveal extra information,
  46         * and some servers might not answer if this option is not sent */
  47         network->dhcp_client_identifier = DHCP_CLIENT_ID_MAC;
  48         /* RFC 7844 3.10:
  49          SHOULD NOT use the Vendor Class Identifier option */
  50         network->dhcp_vendor_class_identifier = mfree(network->dhcp_vendor_class_identifier);
  51         /* RFC7844 section 3.6.:
  52          The client intending to protect its privacy SHOULD only request a
  53          minimal number of options in the PRL and SHOULD also randomly shuffle
  54          the ordering of option codes in the PRL.  If this random ordering
  55          cannot be implemented, the client MAY order the option codes in the
  56          PRL by option code number (lowest to highest).
  57         */
  58         /* NOTE: dhcp_use_mtu is false by default,
  59         * though it was not initiallized to any value in network_load_one.
  60         * Maybe there should be another var called *send*?
  61         * (to use the MTU sent by the server but to do not send
  62         * the option in the PRL). */
  63         network->dhcp_use_mtu = false;
  64         /* NOTE: when Anonymize=yes, the PRL route options are sent by default,
  65          * but this is needed to use them. */
  66         network->dhcp_use_routes = true;
  67         /* RFC7844 section 3.6.
  68         * same comments as previous option */
  69         network->dhcp_use_timezone = false;
  70 }
  71
  72 static int network_resolve_netdev_one(Network *network, const char *name, NetDevKind kind, NetDev **ret_netdev) {
  73         const char *kind_string;
  74         NetDev *netdev;
  75         int r;
  76
  77         /* For test-networkd-conf, the check must be earlier than the assertions. */
  78         if (!name)
  79                 return 0;
  80
  81         assert(network);
  82         assert(network->manager);
  83         assert(network->filename);
  84         assert(ret_netdev);
  85
  86         if (kind == _NETDEV_KIND_TUNNEL)
  87                 kind_string = "tunnel";
  88         else {
  89                 kind_string = netdev_kind_to_string(kind);
  90                 if (!kind_string)
  91                         return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
  92                                                "%s: Invalid NetDev kind of %s, ignoring assignment.",
  93                                                network->filename, name);
  94         }
  95
  96         r = netdev_get(network->manager, name, &netdev);
  97         if (r < 0)
  98                 return log_error_errno(r, "%s: %s NetDev could not be found, ignoring assignment.",
  99                                        network->filename, name);
 100
 101         if (netdev->kind != kind && !(kind == _NETDEV_KIND_TUNNEL &&
 102                                       IN_SET(netdev->kind,
 103                                              NETDEV_KIND_IPIP,
 104                                              NETDEV_KIND_SIT,
 105                                              NETDEV_KIND_GRE,
 106                                              NETDEV_KIND_GRETAP,
 107                                              NETDEV_KIND_IP6GRE,
 108                                              NETDEV_KIND_IP6GRETAP,
 109                                              NETDEV_KIND_VTI,
 110                                              NETDEV_KIND_VTI6,
 111                                              NETDEV_KIND_IP6TNL,
 112                                              NETDEV_KIND_ERSPAN)))
 113                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 114                                        "%s: NetDev %s is not a %s, ignoring assignment",
 115                                        network->filename, name, kind_string);
 116
 117         *ret_netdev = netdev_ref(netdev);
 118         return 1;
 119 }
 120
 121 static int network_resolve_stacked_netdevs(Network *network) {
 122         void *name, *kind;
 123         Iterator i;
 124         int r;
 125
 126         assert(network);
 127
 128         HASHMAP_FOREACH_KEY(kind, name, network->stacked_netdev_names, i) {
 129                 _cleanup_(netdev_unrefp) NetDev *netdev = NULL;
 130
 131                 r = network_resolve_netdev_one(network, name, PTR_TO_INT(kind), &netdev);
 132                 if (r <= 0)
 133                         continue;
 134
 135                 r = hashmap_ensure_allocated(&network->stacked_netdevs, &string_hash_ops);
 136                 if (r < 0)
 137                         return log_oom();
 138
 139                 r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
 140                 if (r < 0)
 141                         return log_error_errno(r, "%s: Failed to add NetDev '%s' to network: %m",
 142                                                network->filename, (const char *) name);
 143
 144                 netdev = NULL;
 145         }
 146
 147         return 0;
 148 }
 149
 150 int network_verify(Network *network) {
 151         RoutePrefix *route_prefix, *route_prefix_next;
 152         RoutingPolicyRule *rule, *rule_next;
 153         Neighbor *neighbor, *neighbor_next;
 154         AddressLabel *label, *label_next;
 155         NextHop *nexthop, *nextnop_next;
 156         Address *address, *address_next;
 157         Prefix *prefix, *prefix_next;
 158         Route *route, *route_next;
 159         FdbEntry *fdb, *fdb_next;
 160         TrafficControl *tc;
 161         Iterator i;
 162
 163         assert(network);
 164         assert(network->filename);
 165
 166         if (set_isempty(network->match_mac) && set_isempty(network->match_permanent_mac) &&
 167             strv_isempty(network->match_path) && strv_isempty(network->match_driver) &&
 168             strv_isempty(network->match_type) && strv_isempty(network->match_name) &&
 169             strv_isempty(network->match_property) && strv_isempty(network->match_ssid) && !network->conditions)
 170                 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
 171                                          "%s: No valid settings found in the [Match] section, ignoring file. "
 172                                          "To match all interfaces, add Name=* in the [Match] section.",
 173                                          network->filename);
 174
 175         /* skip out early if configuration does not match the environment */
 176         if (!condition_test_list(network->conditions, environ, NULL, NULL, NULL))
 177                 return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
 178                                        "%s: Conditions in the file do not match the system environment, skipping.",
 179                                        network->filename);
 180
 181         (void) network_resolve_netdev_one(network, network->bond_name, NETDEV_KIND_BOND, &network->bond);
 182         (void) network_resolve_netdev_one(network, network->bridge_name, NETDEV_KIND_BRIDGE, &network->bridge);
 183         (void) network_resolve_netdev_one(network, network->vrf_name, NETDEV_KIND_VRF, &network->vrf);
 184         (void) network_resolve_stacked_netdevs(network);
 185
 186         /* Free unnecessary entries. */
 187         network->bond_name = mfree(network->bond_name);
 188         network->bridge_name = mfree(network->bridge_name);
 189         network->vrf_name = mfree(network->vrf_name);
 190         network->stacked_netdev_names = hashmap_free_free_key(network->stacked_netdev_names);
 191
 192         if (network->bond) {
 193                 /* Bonding slave does not support addressing. */
 194                 if (network->ipv6_accept_ra > 0) {
 195                         log_warning("%s: Cannot enable IPv6AcceptRA= when Bond= is specified, disabling IPv6AcceptRA=.",
 196                                     network->filename);
 197                         network->ipv6_accept_ra = 0;
 198                 }
 199                 if (network->link_local >= 0 && network->link_local != ADDRESS_FAMILY_NO) {
 200                         log_warning("%s: Cannot enable LinkLocalAddressing= when Bond= is specified, disabling LinkLocalAddressing=.",
 201                                     network->filename);
 202                         network->link_local = ADDRESS_FAMILY_NO;
 203                 }
 204                 if (network->dhcp != ADDRESS_FAMILY_NO) {
 205                         log_warning("%s: Cannot enable DHCP= when Bond= is specified, disabling DHCP=.",
 206                                     network->filename);
 207                         network->dhcp = ADDRESS_FAMILY_NO;
 208                 }
 209                 if (network->dhcp_server) {
 210                         log_warning("%s: Cannot enable DHCPServer= when Bond= is specified, disabling DHCPServer=.",
 211                                     network->filename);
 212                         network->dhcp_server = false;
 213                 }
 214                 if (network->n_static_addresses > 0) {
 215                         log_warning("%s: Cannot set addresses when Bond= is specified, ignoring addresses.",
 216                                     network->filename);
 217                         while ((address = network->static_addresses))
 218                                 address_free(address);
 219                 }
 220                 if (network->n_static_routes > 0) {
 221                         log_warning("%s: Cannot set routes when Bond= is specified, ignoring routes.",
 222                                     network->filename);
 223                         while ((route = network->static_routes))
 224                                 route_free(route);
 225                 }
 226         }
 227
 228         if (network->link_local < 0)
 229                 network->link_local = network->bridge ? ADDRESS_FAMILY_NO : ADDRESS_FAMILY_IPV6;
 230
 231         if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6)) {
 232                 if (network->ipv6_accept_ra > 0) {
 233                         log_warning("%s: IPv6AcceptRA= is enabled by the .network file but IPv6 link local addressing is disabled. "
 234                                     "Disabling IPv6AcceptRA=.", network->filename);
 235                         network->ipv6_accept_ra = false;
 236                 }
 237
 238                 if (FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV6)) {
 239                         log_warning("%s: DHCPv6 client is enabled by the .network file but IPv6 link local addressing is disabled. "
 240                                     "Disabling DHCPv6 client.", network->filename);
 241                         SET_FLAG(network->dhcp, ADDRESS_FAMILY_IPV6, false);
 242                 }
 243
 244                 if (network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE) {
 245                         log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. "
 246                                     "Disabling IPv6PrefixDelegation=.", network->filename);
 247                         network->router_prefix_delegation = RADV_PREFIX_DELEGATION_NONE;
 248                 }
 249         }
 250
 251         if (FLAGS_SET(network->link_local, ADDRESS_FAMILY_FALLBACK_IPV4) &&
 252             !FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV4)) {
 253                 log_warning("%s: fallback assignment of IPv4 link local address is enabled but DHCPv4 is disabled. "
 254                             "Disabling the fallback assignment.", network->filename);
 255                 SET_FLAG(network->link_local, ADDRESS_FAMILY_FALLBACK_IPV4, false);
 256         }
 257
 258         if (network->ipv6_accept_ra < 0 && network->bridge)
 259                 network->ipv6_accept_ra = false;
 260
 261         /* IPMasquerade=yes implies IPForward=yes */
 262         if (network->ip_masquerade)
 263                 network->ip_forward |= ADDRESS_FAMILY_IPV4;
 264
 265         if (network->mtu > 0 && network->dhcp_use_mtu) {
 266                 log_warning("%s: MTUBytes= in [Link] section and UseMTU= in [DHCP] section are set. "
 267                             "Disabling UseMTU=.", network->filename);
 268                 network->dhcp_use_mtu = false;
 269         }
 270
 271         if (network->dhcp_use_gateway < 0)
 272                 network->dhcp_use_gateway = network->dhcp_use_routes;
 273
 274         if (network->ignore_carrier_loss < 0)
 275                 network->ignore_carrier_loss = network->configure_without_carrier;
 276
 277         if (network->dhcp_critical >= 0) {
 278                 if (network->keep_configuration >= 0)
 279                         log_warning("%s: Both KeepConfiguration= and deprecated CriticalConnection= are set. "
 280                                     "Ignoring CriticalConnection=.", network->filename);
 281                 else if (network->dhcp_critical)
 282                         /* CriticalConnection=yes also preserve foreign static configurations. */
 283                         network->keep_configuration = KEEP_CONFIGURATION_YES;
 284                 else
 285                         network->keep_configuration = KEEP_CONFIGURATION_NO;
 286         }
 287
 288         if (network->keep_configuration < 0)
 289                 network->keep_configuration = KEEP_CONFIGURATION_NO;
 290
 291         LIST_FOREACH_SAFE(addresses, address, address_next, network->static_addresses)
 292                 if (address_section_verify(address) < 0)
 293                         address_free(address);
 294
 295         LIST_FOREACH_SAFE(routes, route, route_next, network->static_routes)
 296                 if (route_section_verify(route, network) < 0)
 297                         route_free(route);
 298
 299         LIST_FOREACH_SAFE(nexthops, nexthop, nextnop_next, network->static_nexthops)
 300                 if (nexthop_section_verify(nexthop) < 0)
 301                         nexthop_free(nexthop);
 302
 303         LIST_FOREACH_SAFE(static_fdb_entries, fdb, fdb_next, network->static_fdb_entries)
 304                 if (section_is_invalid(fdb->section))
 305                         fdb_entry_free(fdb);
 306
 307         LIST_FOREACH_SAFE(neighbors, neighbor, neighbor_next, network->neighbors)
 308                 if (neighbor_section_verify(neighbor) < 0)
 309                         neighbor_free(neighbor);
 310
 311         LIST_FOREACH_SAFE(labels, label, label_next, network->address_labels)
 312                 if (section_is_invalid(label->section))
 313                         address_label_free(label);
 314
 315         LIST_FOREACH_SAFE(prefixes, prefix, prefix_next, network->static_prefixes)
 316                 if (section_is_invalid(prefix->section))
 317                         prefix_free(prefix);
 318
 319         LIST_FOREACH_SAFE(route_prefixes, route_prefix, route_prefix_next, network->static_route_prefixes)
 320                 if (section_is_invalid(route_prefix->section))
 321                         route_prefix_free(route_prefix);
 322
 323         LIST_FOREACH_SAFE(rules, rule, rule_next, network->rules)
 324                 if (routing_policy_rule_section_verify(rule) < 0)
 325                         routing_policy_rule_free(rule);
 326
 327         bool has_root = false, has_clsact = false;
 328         ORDERED_HASHMAP_FOREACH(tc, network->tc_by_section, i)
 329                 if (traffic_control_section_verify(tc, &has_root, &has_clsact) < 0)
 330                         traffic_control_free(tc);
 331
 332         return 0;
 333 }
 334
 335 int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename) {
 336         _cleanup_free_ char *fname = NULL, *name = NULL;
 337         _cleanup_(network_unrefp) Network *network = NULL;
 338         _cleanup_fclose_ FILE *file = NULL;
 339         const char *dropin_dirname;
 340         char *d;
 341         int r;
 342
 343         assert(manager);
 344         assert(filename);
 345
 346         file = fopen(filename, "re");
 347         if (!file) {
 348                 if (errno == ENOENT)
 349                         return 0;
 350
 351                 return -errno;
 352         }
 353
 354         if (null_or_empty_fd(fileno(file))) {
 355                 log_debug("Skipping empty file: %s", filename);
 356                 return 0;
 357         }
 358
 359         fname = strdup(filename);
 360         if (!fname)
 361                 return log_oom();
 362
 363         name = strdup(basename(filename));
 364         if (!name)
 365                 return log_oom();
 366
 367         d = strrchr(name, '.');
 368         if (!d)
 369                 return -EINVAL;
 370
 371         *d = '\0';
 372
 373         dropin_dirname = strjoina(name, ".network.d");
 374
 375         network = new(Network, 1);
 376         if (!network)
 377                 return log_oom();
 378
 379         *network = (Network) {
 380                 .filename = TAKE_PTR(fname),
 381                 .name = TAKE_PTR(name),
 382
 383                 .manager = manager,
 384                 .n_ref = 1,
 385
 386                 .required_for_online = true,
 387                 .required_operstate_for_online = LINK_OPERSTATE_RANGE_DEFAULT,
 388                 .dhcp = ADDRESS_FAMILY_NO,
 389                 .dhcp_critical = -1,
 390                 .dhcp_use_ntp = true,
 391                 .dhcp_use_sip = true,
 392                 .dhcp_use_dns = true,
 393                 .dhcp_use_hostname = true,
 394                 .dhcp_use_routes = true,
 395                 .dhcp_use_gateway = -1,
 396                 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
 397                 .dhcp_send_hostname = true,
 398                 .dhcp_send_release = true,
 399                 /* To enable/disable RFC7844 Anonymity Profiles */
 400                 .dhcp_anonymize = false,
 401                 .dhcp_route_metric = DHCP_ROUTE_METRIC,
 402                 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
 403                 .dhcp_client_identifier = DHCP_CLIENT_ID_DUID,
 404                 .dhcp_route_table = RT_TABLE_MAIN,
 405                 .dhcp_route_table_set = false,
 406                 /* NOTE: from man: UseMTU=... Defaults to false*/
 407                 .dhcp_use_mtu = false,
 408                 /* NOTE: from man: UseTimezone=... Defaults to "no".*/
 409                 .dhcp_use_timezone = false,
 410                 .rapid_commit = true,
 411
 412                 .dhcp6_use_ntp = true,
 413                 .dhcp6_use_dns = true,
 414
 415                 .dhcp6_pd_assign_prefix = true,
 416
 417                 .dhcp_server_emit_dns = true,
 418                 .dhcp_server_emit_ntp = true,
 419                 .dhcp_server_emit_sip = true,
 420                 .dhcp_server_emit_router = true,
 421                 .dhcp_server_emit_timezone = true,
 422
 423                 .router_prefix_subnet_id = -1,
 424                 .router_emit_dns = true,
 425                 .router_emit_domains = true,
 426
 427                 .use_bpdu = -1,
 428                 .hairpin = -1,
 429                 .fast_leave = -1,
 430                 .allow_port_to_be_root = -1,
 431                 .unicast_flood = -1,
 432                 .multicast_flood = -1,
 433                 .multicast_to_unicast = -1,
 434                 .neighbor_suppression = -1,
 435                 .learning = -1,
 436                 .bridge_proxy_arp = -1,
 437                 .bridge_proxy_arp_wifi = -1,
 438                 .priority = LINK_BRIDGE_PORT_PRIORITY_INVALID,
 439                 .multicast_router = _MULTICAST_ROUTER_INVALID,
 440
 441                 .lldp_mode = LLDP_MODE_ROUTERS_ONLY,
 442
 443                 .dns_default_route = -1,
 444                 .llmnr = RESOLVE_SUPPORT_YES,
 445                 .mdns = RESOLVE_SUPPORT_NO,
 446                 .dnssec_mode = _DNSSEC_MODE_INVALID,
 447                 .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID,
 448
 449                 /* If LinkLocalAddressing= is not set, then set to ADDRESS_FAMILY_IPV6 later. */
 450                 .link_local = _ADDRESS_FAMILY_INVALID,
 451
 452                 .ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO,
 453                 .ipv6_accept_ra = -1,
 454                 .ipv6_dad_transmits = -1,
 455                 .ipv6_hop_limit = -1,
 456                 .ipv6_proxy_ndp = -1,
 457                 .duid.type = _DUID_TYPE_INVALID,
 458                 .proxy_arp = -1,
 459                 .arp = -1,
 460                 .multicast = -1,
 461                 .allmulticast = -1,
 462                 .ipv6_accept_ra_use_dns = true,
 463                 .ipv6_accept_ra_use_autonomous_prefix = true,
 464                 .ipv6_accept_ra_use_onlink_prefix = true,
 465                 .ipv6_accept_ra_route_table = RT_TABLE_MAIN,
 466                 .ipv6_accept_ra_route_table_set = false,
 467                 .ipv6_accept_ra_start_dhcp6_client = true,
 468
 469                 .configure_without_carrier = false,
 470                 .ignore_carrier_loss = -1,
 471                 .keep_configuration = _KEEP_CONFIGURATION_INVALID,
 472                 .ipv6_address_gen_mode = _LINK_IPV6_ADDRESS_GEN_MODE_INVALID,
 473                 .can_triple_sampling = -1,
 474                 .can_termination = -1,
 475                 .ip_service_type = -1,
 476         };
 477
 478         r = config_parse_many(filename, NETWORK_DIRS, dropin_dirname,
 479                               "Match\0"
 480                               "Link\0"
 481                               "Network\0"
 482                               "Address\0"
 483                               "Neighbor\0"
 484                               "IPv6AddressLabel\0"
 485                               "RoutingPolicyRule\0"
 486                               "Route\0"
 487                               "NextHop\0"
 488                               "DHCP\0" /* compat */
 489                               "DHCPv4\0"
 490                               "DHCPv6\0"
 491                               "DHCPServer\0"
 492                               "IPv6AcceptRA\0"
 493                               "IPv6NDPProxyAddress\0"
 494                               "Bridge\0"
 495                               "BridgeFDB\0"
 496                               "BridgeVLAN\0"
 497                               "IPv6PrefixDelegation\0"
 498                               "IPv6Prefix\0"
 499                               "IPv6RoutePrefix\0"
 500                               "LLDP\0"
 501                               "TrafficControlQueueingDiscipline\0"
 502                               "CAN\0"
 503                               "QDisc\0"
 504                               "BFIFO\0"
 505                               "CAKE\0"
 506                               "ControlledDelay\0"
 507                               "DeficitRoundRobinScheduler\0"
 508                               "DeficitRoundRobinSchedulerClass\0"
 509                               "PFIFO\0"
 510                               "PFIFOFast\0"
 511                               "PFIFOHeadDrop\0"
 512                               "FairQueueing\0"
 513                               "FairQueueingControlledDelay\0"
 514                               "GenericRandomEarlyDetection\0"
 515                               "HeavyHitterFilter\0"
 516                               "HierarchyTokenBucket\0"
 517                               "HierarchyTokenBucketClass\0"
 518                               "NetworkEmulator\0"
 519                               "PIE\0"
 520                               "StochasticFairBlue\0"
 521                               "StochasticFairnessQueueing\0"
 522                               "TokenBucketFilter\0"
 523                               "TrivialLinkEqualizer\0",
 524                               config_item_perf_lookup, network_network_gperf_lookup,
 525                               CONFIG_PARSE_WARN, network);
 526         if (r < 0)
 527                 return r;
 528
 529         network_apply_anonymize_if_set(network);
 530
 531         r = network_add_ipv4ll_route(network);
 532         if (r < 0)
 533                 log_warning_errno(r, "%s: Failed to add IPv4LL route, ignoring: %m", network->filename);
 534
 535         r = network_add_default_route_on_device(network);
 536         if (r < 0)
 537                 log_warning_errno(r, "%s: Failed to add default route on device, ignoring: %m",
 538                                   network->filename);
 539
 540         struct stat stats;
 541         if (stat(filename, &stats) < 0)
 542                 return -errno;
 543         network->timestamp = timespec_load(&stats.st_mtim);
 544
 545         if (network_verify(network) < 0)
 546                 /* Ignore .network files that do not match the conditions. */
 547                 return 0;
 548
 549         r = ordered_hashmap_ensure_allocated(networks, &string_hash_ops);
 550         if (r < 0)
 551                 return r;
 552
 553         r = ordered_hashmap_put(*networks, network->name, network);
 554         if (r < 0)
 555                 return r;
 556
 557         network = NULL;
 558         return 0;
 559 }
 560
 561 int network_load(Manager *manager, OrderedHashmap **networks) {
 562         _cleanup_strv_free_ char **files = NULL;
 563         char **f;
 564         int r;
 565
 566         assert(manager);
 567
 568         ordered_hashmap_clear_with_destructor(*networks, network_unref);
 569
 570         r = conf_files_list_strv(&files, ".network", NULL, 0, NETWORK_DIRS);
 571         if (r < 0)
 572                 return log_error_errno(r, "Failed to enumerate network files: %m");
 573
 574         STRV_FOREACH(f, files) {
 575                 r = network_load_one(manager, networks, *f);
 576                 if (r < 0)
 577                         log_error_errno(r, "Failed to load %s, ignoring: %m", *f);
 578         }
 579
 580         return 0;
 581 }
 582
 583 int network_reload(Manager *manager) {
 584         OrderedHashmap *new_networks = NULL;
 585         Network *n, *old;
 586         Iterator i;
 587         int r;
 588
 589         assert(manager);
 590
 591         r = network_load(manager, &new_networks);
 592         if (r < 0)
 593                 goto failure;
 594
 595         ORDERED_HASHMAP_FOREACH(n, new_networks, i) {
 596                 r = network_get_by_name(manager, n->name, &old);
 597                 if (r < 0)
 598                         continue; /* The .network file is new. */
 599
 600                 if (n->timestamp != old->timestamp)
 601                         continue; /* The .network file is modified. */
 602
 603                 if (!streq(n->filename, old->filename))
 604                         continue;
 605
 606                 r = ordered_hashmap_replace(new_networks, old->name, old);
 607                 if (r < 0)
 608                         goto failure;
 609
 610                 network_ref(old);
 611                 network_unref(n);
 612         }
 613
 614         ordered_hashmap_free_with_destructor(manager->networks, network_unref);
 615         manager->networks = new_networks;
 616
 617         return 0;
 618
 619 failure:
 620         ordered_hashmap_free_with_destructor(new_networks, network_unref);
 621
 622         return r;
 623 }
 624
 625 static Network *network_free(Network *network) {
 626         IPv6ProxyNDPAddress *ipv6_proxy_ndp_address;
 627         RoutePrefix *route_prefix;
 628         RoutingPolicyRule *rule;
 629         AddressLabel *label;
 630         FdbEntry *fdb_entry;
 631         Neighbor *neighbor;
 632         Address *address;
 633         NextHop *nexthop;
 634         Prefix *prefix;
 635         Route *route;
 636
 637         if (!network)
 638                 return NULL;
 639
 640         free(network->filename);
 641
 642         set_free_free(network->match_mac);
 643         set_free_free(network->match_permanent_mac);
 644         strv_free(network->match_path);
 645         strv_free(network->match_driver);
 646         strv_free(network->match_type);
 647         strv_free(network->match_name);
 648         strv_free(network->match_property);
 649         strv_free(network->match_wlan_iftype);
 650         strv_free(network->match_ssid);
 651         set_free_free(network->match_bssid);
 652         condition_free_list(network->conditions);
 653
 654         free(network->description);
 655         free(network->dhcp_vendor_class_identifier);
 656         free(network->dhcp_mudurl);
 657         strv_free(network->dhcp_user_class);
 658         free(network->dhcp_hostname);
 659         set_free(network->dhcp_black_listed_ip);
 660         set_free(network->dhcp_request_options);
 661         set_free(network->dhcp6_request_options);
 662         free(network->mac);
 663         free(network->dhcp6_mudurl);
 664         strv_free(network->dhcp6_user_class);
 665         strv_free(network->dhcp6_vendor_class);
 666
 667         if (network->dhcp_acd)
 668                 sd_ipv4acd_unref(network->dhcp_acd);
 669
 670         strv_free(network->ntp);
 671         free(network->dns);
 672         strv_free(network->sip);
 673         strv_free(network->smtp);
 674         ordered_set_free_free(network->search_domains);
 675         ordered_set_free_free(network->route_domains);
 676         strv_free(network->bind_carrier);
 677
 678         ordered_set_free_free(network->router_search_domains);
 679         free(network->router_dns);
 680         set_free_free(network->ndisc_black_listed_prefix);
 681
 682         free(network->bridge_name);
 683         free(network->bond_name);
 684         free(network->vrf_name);
 685         hashmap_free_free_key(network->stacked_netdev_names);
 686         netdev_unref(network->bridge);
 687         netdev_unref(network->bond);
 688         netdev_unref(network->vrf);
 689         hashmap_free_with_destructor(network->stacked_netdevs, netdev_unref);
 690
 691         while ((route = network->static_routes))
 692                 route_free(route);
 693
 694         while ((nexthop = network->static_nexthops))
 695                 nexthop_free(nexthop);
 696
 697         while ((address = network->static_addresses))
 698                 address_free(address);
 699
 700         while ((fdb_entry = network->static_fdb_entries))
 701                 fdb_entry_free(fdb_entry);
 702
 703         while ((ipv6_proxy_ndp_address = network->ipv6_proxy_ndp_addresses))
 704                 ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address);
 705
 706         while ((neighbor = network->neighbors))
 707                 neighbor_free(neighbor);
 708
 709         while ((label = network->address_labels))
 710                 address_label_free(label);
 711
 712         while ((prefix = network->static_prefixes))
 713                 prefix_free(prefix);
 714
 715         while ((route_prefix = network->static_route_prefixes))
 716                 route_prefix_free(route_prefix);
 717
 718         while ((rule = network->rules))
 719                 routing_policy_rule_free(rule);
 720
 721         hashmap_free(network->addresses_by_section);
 722         hashmap_free(network->routes_by_section);
 723         hashmap_free(network->nexthops_by_section);
 724         hashmap_free(network->fdb_entries_by_section);
 725         hashmap_free(network->neighbors_by_section);
 726         hashmap_free(network->address_labels_by_section);
 727         hashmap_free(network->prefixes_by_section);
 728         hashmap_free(network->route_prefixes_by_section);
 729         hashmap_free(network->rules_by_section);
 730         ordered_hashmap_free_with_destructor(network->tc_by_section, traffic_control_free);
 731
 732         if (network->manager &&
 733             network->manager->duids_requesting_uuid)
 734                 set_remove(network->manager->duids_requesting_uuid, &network->duid);
 735
 736         free(network->name);
 737
 738         free(network->dhcp_server_timezone);
 739         free(network->dhcp_server_dns);
 740         free(network->dhcp_server_ntp);
 741         free(network->dhcp_server_sip);
 742
 743         set_free_free(network->dnssec_negative_trust_anchors);
 744
 745         free(network->lldp_mud);
 746
 747         ordered_hashmap_free(network->dhcp_client_send_options);
 748         ordered_hashmap_free(network->dhcp_client_send_vendor_options);
 749         ordered_hashmap_free(network->dhcp_server_send_options);
 750         ordered_hashmap_free(network->dhcp_server_send_vendor_options);
 751         ordered_hashmap_free(network->ipv6_tokens);
 752         ordered_hashmap_free(network->dhcp6_client_send_vendor_options);
 753
 754         return mfree(network);
 755 }
 756
 757 DEFINE_TRIVIAL_REF_UNREF_FUNC(Network, network, network_free);
 758
 759 int network_get_by_name(Manager *manager, const char *name, Network **ret) {
 760         Network *network;
 761
 762         assert(manager);
 763         assert(name);
 764         assert(ret);
 765
 766         network = ordered_hashmap_get(manager->networks, name);
 767         if (!network)
 768                 return -ENOENT;
 769
 770         *ret = network;
 771
 772         return 0;
 773 }
 774
 775 int network_get(Manager *manager, unsigned short iftype, sd_device *device,
 776                 const char *ifname, char * const *alternative_names,
 777                 const struct ether_addr *address, const struct ether_addr *permanent_address,
 778                 enum nl80211_iftype wlan_iftype, const char *ssid, const struct ether_addr *bssid,
 779                 Network **ret) {
 780         Network *network;
 781         Iterator i;
 782
 783         assert(manager);
 784         assert(ret);
 785
 786         ORDERED_HASHMAP_FOREACH(network, manager->networks, i)
 787                 if (net_match_config(network->match_mac, network->match_permanent_mac,
 788                                      network->match_path, network->match_driver,
 789                                      network->match_type, network->match_name, network->match_property,
 790                                      network->match_wlan_iftype, network->match_ssid, network->match_bssid,
 791                                      iftype, device, address, permanent_address,
 792                                      ifname, alternative_names, wlan_iftype, ssid, bssid)) {
 793                         if (network->match_name && device) {
 794                                 const char *attr;
 795                                 uint8_t name_assign_type = NET_NAME_UNKNOWN;
 796
 797                                 if (sd_device_get_sysattr_value(device, "name_assign_type", &attr) >= 0)
 798                                         (void) safe_atou8(attr, &name_assign_type);
 799
 800                                 if (name_assign_type == NET_NAME_ENUM)
 801                                         log_warning("%s: found matching network '%s', based on potentially unpredictable ifname",
 802                                                     ifname, network->filename);
 803                                 else
 804                                         log_debug("%s: found matching network '%s'", ifname, network->filename);
 805                         } else
 806                                 log_debug("%s: found matching network '%s'", ifname, network->filename);
 807
 808                         *ret = network;
 809                         return 0;
 810                 }
 811
 812         *ret = NULL;
 813
 814         return -ENOENT;
 815 }
 816
 817 int network_apply(Network *network, Link *link) {
 818         assert(network);
 819         assert(link);
 820
 821         link->network = network_ref(network);
 822
 823         if (network->n_dns > 0 ||
 824             !strv_isempty(network->ntp) ||
 825             !ordered_set_isempty(network->search_domains) ||
 826             !ordered_set_isempty(network->route_domains))
 827                 link_dirty(link);
 828
 829         return 0;
 830 }
 831
 832 bool network_has_static_ipv6_configurations(Network *network) {
 833         Address *address;
 834         Route *route;
 835         FdbEntry *fdb;
 836         Neighbor *neighbor;
 837
 838         assert(network);
 839
 840         LIST_FOREACH(addresses, address, network->static_addresses)
 841                 if (address->family == AF_INET6)
 842                         return true;
 843
 844         LIST_FOREACH(routes, route, network->static_routes)
 845                 if (route->family == AF_INET6)
 846                         return true;
 847
 848         LIST_FOREACH(static_fdb_entries, fdb, network->static_fdb_entries)
 849                 if (fdb->family == AF_INET6)
 850                         return true;
 851
 852         LIST_FOREACH(neighbors, neighbor, network->neighbors)
 853                 if (neighbor->family == AF_INET6)
 854                         return true;
 855
 856         if (!LIST_IS_EMPTY(network->address_labels))
 857                 return true;
 858
 859         if (!LIST_IS_EMPTY(network->static_prefixes))
 860                 return true;
 861
 862         return false;
 863 }
 864
 865 int config_parse_stacked_netdev(const char *unit,
 866                 const char *filename,
 867                 unsigned line,
 868                 const char *section,
 869                 unsigned section_line,
 870                 const char *lvalue,
 871                 int ltype,
 872                 const char *rvalue,
 873                 void *data,
 874                 void *userdata) {
 875         _cleanup_free_ char *name = NULL;
 876         NetDevKind kind = ltype;
 877         Hashmap **h = data;
 878         int r;
 879
 880         assert(filename);
 881         assert(lvalue);
 882         assert(rvalue);
 883         assert(data);
 884         assert(IN_SET(kind,
 885                       NETDEV_KIND_VLAN, NETDEV_KIND_MACVLAN, NETDEV_KIND_MACVTAP,
 886                       NETDEV_KIND_IPVLAN, NETDEV_KIND_IPVTAP, NETDEV_KIND_VXLAN,
 887                       NETDEV_KIND_L2TP, NETDEV_KIND_MACSEC, _NETDEV_KIND_TUNNEL,
 888                       NETDEV_KIND_XFRM));
 889
 890         if (!ifname_valid(rvalue)) {
 891                 log_syntax(unit, LOG_ERR, filename, line, 0,
 892                            "Invalid netdev name in %s=, ignoring assignment: %s", lvalue, rvalue);
 893                 return 0;
 894         }
 895
 896         name = strdup(rvalue);
 897         if (!name)
 898                 return log_oom();
 899
 900         r = hashmap_ensure_allocated(h, &string_hash_ops);
 901         if (r < 0)
 902                 return log_oom();
 903
 904         r = hashmap_put(*h, name, INT_TO_PTR(kind));
 905         if (r < 0)
 906                 log_syntax(unit, LOG_ERR, filename, line, r,
 907                            "Cannot add NetDev '%s' to network, ignoring assignment: %m", name);
 908         else if (r == 0)
 909                 log_syntax(unit, LOG_DEBUG, filename, line, r,
 910                            "NetDev '%s' specified twice, ignoring.", name);
 911         else
 912                 name = NULL;
 913
 914         return 0;
 915 }
 916
 917 int config_parse_domains(
 918                 const char *unit,
 919                 const char *filename,
 920                 unsigned line,
 921                 const char *section,
 922                 unsigned section_line,
 923                 const char *lvalue,
 924                 int ltype,
 925                 const char *rvalue,
 926                 void *data,
 927                 void *userdata) {
 928
 929         const char *p;
 930         Network *n = data;
 931         int r;
 932
 933         assert(n);
 934         assert(lvalue);
 935         assert(rvalue);
 936
 937         if (isempty(rvalue)) {
 938                 n->search_domains = ordered_set_free_free(n->search_domains);
 939                 n->route_domains = ordered_set_free_free(n->route_domains);
 940                 return 0;
 941         }
 942
 943         p = rvalue;
 944         for (;;) {
 945                 _cleanup_free_ char *w = NULL, *normalized = NULL;
 946                 const char *domain;
 947                 bool is_route;
 948
 949                 r = extract_first_word(&p, &w, NULL, 0);
 950                 if (r < 0) {
 951                         log_syntax(unit, LOG_ERR, filename, line, r,
 952                                    "Failed to extract search or route domain, ignoring: %s", rvalue);
 953                         break;
 954                 }
 955                 if (r == 0)
 956                         break;
 957
 958                 is_route = w[0] == '~';
 959                 domain = is_route ? w + 1 : w;
 960
 961                 if (dns_name_is_root(domain) || streq(domain, "*")) {
 962                         /* If the root domain appears as is, or the special token "*" is found, we'll
 963                          * consider this as routing domain, unconditionally. */
 964                         is_route = true;
 965                         domain = "."; /* make sure we don't allow empty strings, thus write the root
 966                                        * domain as "." */
 967                 } else {
 968                         r = dns_name_normalize(domain, 0, &normalized);
 969                         if (r < 0) {
 970                                 log_syntax(unit, LOG_ERR, filename, line, r,
 971                                            "'%s' is not a valid domain name, ignoring.", domain);
 972                                 continue;
 973                         }
 974
 975                         domain = normalized;
 976
 977                         if (is_localhost(domain)) {
 978                                 log_syntax(unit, LOG_ERR, filename, line, 0,
 979                                            "'localhost' domain may not be configured as search or route domain, ignoring assignment: %s",
 980                                            domain);
 981                                 continue;
 982                         }
 983                 }
 984
 985                 OrderedSet **set = is_route ? &n->route_domains : &n->search_domains;
 986                 r = ordered_set_ensure_allocated(set, &string_hash_ops);
 987                 if (r < 0)
 988                         return r;
 989
 990                 r = ordered_set_put_strdup(*set, domain);
 991                 if (r < 0)
 992                         return log_oom();
 993         }
 994
 995         return 0;
 996 }
 997
 998 int config_parse_ipv6token(
 999                 const char* unit,
1000                 const char *filename,
1001                 unsigned line,
1002                 const char *section,
1003                 unsigned section_line,
1004                 const char *lvalue,
1005                 int ltype,
1006                 const char *rvalue,
1007                 void *data,
1008                 void *userdata) {
1009
1010         union in_addr_union buffer;
1011         struct in6_addr *token = data;
1012         int r;
1013
1014         assert(filename);
1015         assert(lvalue);
1016         assert(rvalue);
1017         assert(token);
1018
1019         r = in_addr_from_string(AF_INET6, rvalue, &buffer);
1020         if (r < 0) {
1021                 log_syntax(unit, LOG_ERR, filename, line, r,
1022                            "Failed to parse IPv6 token, ignoring: %s", rvalue);
1023                 return 0;
1024         }
1025
1026         if (in_addr_is_null(AF_INET6, &buffer)) {
1027                 log_syntax(unit, LOG_ERR, filename, line, 0,
1028                            "IPv6 token cannot be the ANY address, ignoring: %s", rvalue);
1029                 return 0;
1030         }
1031
1032         if ((buffer.in6.s6_addr32[0] | buffer.in6.s6_addr32[1]) != 0) {
1033                 log_syntax(unit, LOG_ERR, filename, line, 0,
1034                            "IPv6 token cannot be longer than 64 bits, ignoring: %s", rvalue);
1035                 return 0;
1036         }
1037
1038         *token = buffer.in6;
1039
1040         return 0;
1041 }
1042
1043 static const char* const ipv6_privacy_extensions_table[_IPV6_PRIVACY_EXTENSIONS_MAX] = {
1044         [IPV6_PRIVACY_EXTENSIONS_NO] = "no",
1045         [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC] = "prefer-public",
1046         [IPV6_PRIVACY_EXTENSIONS_YES] = "yes",
1047 };
1048
1049 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions, IPv6PrivacyExtensions,
1050                                         IPV6_PRIVACY_EXTENSIONS_YES);
1051
1052 int config_parse_ipv6_privacy_extensions(
1053                 const char* unit,
1054                 const char *filename,
1055                 unsigned line,
1056                 const char *section,
1057                 unsigned section_line,
1058                 const char *lvalue,
1059                 int ltype,
1060                 const char *rvalue,
1061                 void *data,
1062                 void *userdata) {
1063
1064         IPv6PrivacyExtensions s, *ipv6_privacy_extensions = data;
1065
1066         assert(filename);
1067         assert(lvalue);
1068         assert(rvalue);
1069         assert(ipv6_privacy_extensions);
1070
1071         s = ipv6_privacy_extensions_from_string(rvalue);
1072         if (s < 0) {
1073                 if (streq(rvalue, "kernel"))
1074                         s = _IPV6_PRIVACY_EXTENSIONS_INVALID;
1075                 else {
1076                         log_syntax(unit, LOG_ERR, filename, line, 0,
1077                                    "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue);
1078                         return 0;
1079                 }
1080         }
1081
1082         *ipv6_privacy_extensions = s;
1083
1084         return 0;
1085 }
1086
1087 int config_parse_hostname(
1088                 const char *unit,
1089                 const char *filename,
1090                 unsigned line,
1091                 const char *section,
1092                 unsigned section_line,
1093                 const char *lvalue,
1094                 int ltype,
1095                 const char *rvalue,
1096                 void *data,
1097                 void *userdata) {
1098
1099         _cleanup_free_ char *hn = NULL;
1100         char **hostname = data;
1101         int r;
1102
1103         assert(filename);
1104         assert(lvalue);
1105         assert(rvalue);
1106
1107         r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &hn, userdata);
1108         if (r < 0)
1109                 return r;
1110
1111         if (!hostname_is_valid(hn, false)) {
1112                 log_syntax(unit, LOG_ERR, filename, line, 0,
1113                            "Hostname is not valid, ignoring assignment: %s", rvalue);
1114                 return 0;
1115         }
1116
1117         r = dns_name_is_valid(hn);
1118         if (r < 0) {
1119                 log_syntax(unit, LOG_ERR, filename, line, r,
1120                            "Failed to check validity of hostname '%s', ignoring assignment: %m", rvalue);
1121                 return 0;
1122         }
1123         if (r == 0) {
1124                 log_syntax(unit, LOG_ERR, filename, line, 0,
1125                            "Hostname is not a valid DNS domain name, ignoring assignment: %s", rvalue);
1126                 return 0;
1127         }
1128
1129         return free_and_replace(*hostname, hn);
1130 }
1131
1132 int config_parse_timezone(
1133                 const char *unit,
1134                 const char *filename,
1135                 unsigned line,
1136                 const char *section,
1137                 unsigned section_line,
1138                 const char *lvalue,
1139                 int ltype,
1140                 const char *rvalue,
1141                 void *data,
1142                 void *userdata) {
1143
1144         _cleanup_free_ char *tz = NULL;
1145         char **datap = data;
1146         int r;
1147
1148         assert(filename);
1149         assert(lvalue);
1150         assert(rvalue);
1151
1152         r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &tz, userdata);
1153         if (r < 0)
1154                 return r;
1155
1156         if (!timezone_is_valid(tz, LOG_ERR)) {
1157                 log_syntax(unit, LOG_ERR, filename, line, 0,
1158                            "Timezone is not valid, ignoring assignment: %s", rvalue);
1159                 return 0;
1160         }
1161
1162         return free_and_replace(*datap, tz);
1163 }
1164
1165 int config_parse_dns(
1166                 const char *unit,
1167                 const char *filename,
1168                 unsigned line,
1169                 const char *section,
1170                 unsigned section_line,
1171                 const char *lvalue,
1172                 int ltype,
1173                 const char *rvalue,
1174                 void *data,
1175                 void *userdata) {
1176
1177         Network *n = userdata;
1178         int r;
1179
1180         assert(filename);
1181         assert(lvalue);
1182         assert(rvalue);
1183
1184         for (;;) {
1185                 _cleanup_free_ char *w = NULL;
1186                 union in_addr_union a;
1187                 struct in_addr_data *m;
1188                 int family;
1189
1190                 r = extract_first_word(&rvalue, &w, NULL, 0);
1191                 if (r == -ENOMEM)
1192                         return log_oom();
1193                 if (r < 0) {
1194                         log_syntax(unit, LOG_ERR, filename, line, r,
1195                                    "Invalid syntax, ignoring: %s", rvalue);
1196                         break;
1197                 }
1198                 if (r == 0)
1199                         break;
1200
1201                 r = in_addr_from_string_auto(w, &family, &a);
1202                 if (r < 0) {
1203                         log_syntax(unit, LOG_ERR, filename, line, r,
1204                                    "Failed to parse dns server address, ignoring: %s", w);
1205                         continue;
1206                 }
1207
1208                 m = reallocarray(n->dns, n->n_dns + 1, sizeof(struct in_addr_data));
1209                 if (!m)
1210                         return log_oom();
1211
1212                 m[n->n_dns++] = (struct in_addr_data) {
1213                         .family = family,
1214                         .address = a,
1215                 };
1216
1217                 n->dns = m;
1218         }
1219
1220         return 0;
1221 }
1222
1223 int config_parse_dnssec_negative_trust_anchors(
1224                 const char *unit,
1225                 const char *filename,
1226                 unsigned line,
1227                 const char *section,
1228                 unsigned section_line,
1229                 const char *lvalue,
1230                 int ltype,
1231                 const char *rvalue,
1232                 void *data,
1233                 void *userdata) {
1234
1235         const char *p = rvalue;
1236         Network *n = data;
1237         int r;
1238
1239         assert(n);
1240         assert(lvalue);
1241         assert(rvalue);
1242
1243         if (isempty(rvalue)) {
1244                 n->dnssec_negative_trust_anchors = set_free_free(n->dnssec_negative_trust_anchors);
1245                 return 0;
1246         }
1247
1248         for (;;) {
1249                 _cleanup_free_ char *w = NULL;
1250
1251                 r = extract_first_word(&p, &w, NULL, 0);
1252                 if (r < 0) {
1253                         log_syntax(unit, LOG_ERR, filename, line, r,
1254                                    "Failed to extract negative trust anchor domain, ignoring: %s", rvalue);
1255                         break;
1256                 }
1257                 if (r == 0)
1258                         break;
1259
1260                 r = dns_name_is_valid(w);
1261                 if (r <= 0) {
1262                         log_syntax(unit, LOG_ERR, filename, line, r,
1263                                    "%s is not a valid domain name, ignoring.", w);
1264                         continue;
1265                 }
1266
1267                 r = set_ensure_allocated(&n->dnssec_negative_trust_anchors, &dns_name_hash_ops);
1268                 if (r < 0)
1269                         return log_oom();
1270
1271                 r = set_put(n->dnssec_negative_trust_anchors, w);
1272                 if (r < 0)
1273                         return log_oom();
1274                 if (r > 0)
1275                         w = NULL;
1276         }
1277
1278         return 0;
1279 }
1280
1281 int config_parse_ntp(
1282                 const char *unit,
1283                 const char *filename,
1284                 unsigned line,
1285                 const char *section,
1286                 unsigned section_line,
1287                 const char *lvalue,
1288                 int ltype,
1289                 const char *rvalue,
1290                 void *data,
1291                 void *userdata) {
1292
1293         char ***l = data;
1294         int r;
1295
1296         assert(l);
1297         assert(lvalue);
1298         assert(rvalue);
1299
1300         if (isempty(rvalue)) {
1301                 *l = strv_free(*l);
1302                 return 0;
1303         }
1304
1305         for (;;) {
1306                 _cleanup_free_ char *w = NULL;
1307
1308                 r = extract_first_word(&rvalue, &w, NULL, 0);
1309                 if (r == -ENOMEM)
1310                         return log_oom();
1311                 if (r < 0) {
1312                         log_syntax(unit, LOG_ERR, filename, line, r,
1313                                    "Failed to extract NTP server name, ignoring: %s", rvalue);
1314                         break;
1315                 }
1316                 if (r == 0)
1317                         break;
1318
1319                 r = dns_name_is_valid_or_address(w);
1320                 if (r <= 0) {
1321                         log_syntax(unit, LOG_ERR, filename, line, r,
1322                                    "%s is not a valid domain name or IP address, ignoring.", w);
1323                         continue;
1324                 }
1325
1326                 if (strv_length(*l) > MAX_NTP_SERVERS) {
1327                         log_syntax(unit, LOG_WARNING, filename, line, 0,
1328                                    "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
1329                                    MAX_NTP_SERVERS, w);
1330                         break;
1331                 }
1332
1333                 r = strv_consume(l, TAKE_PTR(w));
1334                 if (r < 0)
1335                         return log_oom();
1336         }
1337
1338         return 0;
1339 }
1340
1341 int config_parse_required_for_online(
1342                 const char *unit,
1343                 const char *filename,
1344                 unsigned line,
1345                 const char *section,
1346                 unsigned section_line,
1347                 const char *lvalue,
1348                 int ltype,
1349                 const char *rvalue,
1350                 void *data,
1351                 void *userdata) {
1352
1353         Network *network = data;
1354         LinkOperationalStateRange range;
1355         bool required = true;
1356         int r;
1357
1358         if (isempty(rvalue)) {
1359                 network->required_for_online = true;
1360                 network->required_operstate_for_online = LINK_OPERSTATE_RANGE_DEFAULT;
1361                 return 0;
1362         }
1363
1364         r = parse_operational_state_range(rvalue, &range);
1365         if (r < 0) {
1366                 r = parse_boolean(rvalue);
1367                 if (r < 0) {
1368                         log_syntax(unit, LOG_ERR, filename, line, r,
1369                                    "Failed to parse %s= setting, ignoring assignment: %s",
1370                                    lvalue, rvalue);
1371                         return 0;
1372                 }
1373
1374                 required = r;
1375                 range = LINK_OPERSTATE_RANGE_DEFAULT;
1376         }
1377
1378         network->required_for_online = required;
1379         network->required_operstate_for_online = range;
1380
1381         return 0;
1382 }
1383
1384 DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration, keep_configuration, KeepConfiguration,
1385                          "Failed to parse KeepConfiguration= setting");
1386
1387 static const char* const keep_configuration_table[_KEEP_CONFIGURATION_MAX] = {
1388         [KEEP_CONFIGURATION_NO]           = "no",
1389         [KEEP_CONFIGURATION_DHCP_ON_STOP] = "dhcp-on-stop",
1390         [KEEP_CONFIGURATION_DHCP]         = "dhcp",
1391         [KEEP_CONFIGURATION_STATIC]       = "static",
1392         [KEEP_CONFIGURATION_YES]          = "yes",
1393 };
1394
1395 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration, KeepConfiguration, KEEP_CONFIGURATION_YES);