src/network/networkd-network.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2013 Tom Gundersen <teg@jklm.no>
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <ctype.h>
  21 #include <net/if.h>
  22
  23 #include "alloc-util.h"
  24 #include "conf-files.h"
  25 #include "conf-parser.h"
  26 #include "dns-domain.h"
  27 #include "fd-util.h"
  28 #include "hostname-util.h"
  29 #include "network-internal.h"
  30 #include "networkd-network.h"
  31 #include "networkd.h"
  32 #include "parse-util.h"
  33 #include "set.h"
  34 #include "stat-util.h"
  35 #include "string-table.h"
  36 #include "string-util.h"
  37 #include "util.h"
  38
  39 static int network_load_one(Manager *manager, const char *filename) {
  40         _cleanup_network_free_ Network *network = NULL;
  41         _cleanup_fclose_ FILE *file = NULL;
  42         char *d;
  43         const char *dropin_dirname;
  44         _cleanup_strv_free_ char **dropin_dirs = NULL;
  45         _cleanup_free_ char *dropin_dirs_nulstr = NULL;
  46         size_t dropin_dirs_nulstr_size;
  47         Route *route;
  48         Address *address;
  49         int r;
  50
  51         assert(manager);
  52         assert(filename);
  53
  54         file = fopen(filename, "re");
  55         if (!file) {
  56                 if (errno == ENOENT)
  57                         return 0;
  58
  59                 return -errno;
  60         }
  61
  62         if (null_or_empty_fd(fileno(file))) {
  63                 log_debug("Skipping empty file: %s", filename);
  64                 return 0;
  65         }
  66
  67         network = new0(Network, 1);
  68         if (!network)
  69                 return log_oom();
  70
  71         network->manager = manager;
  72
  73         LIST_HEAD_INIT(network->static_addresses);
  74         LIST_HEAD_INIT(network->static_routes);
  75         LIST_HEAD_INIT(network->static_fdb_entries);
  76
  77         network->stacked_netdevs = hashmap_new(&string_hash_ops);
  78         if (!network->stacked_netdevs)
  79                 return log_oom();
  80
  81         network->addresses_by_section = hashmap_new(NULL);
  82         if (!network->addresses_by_section)
  83                 return log_oom();
  84
  85         network->routes_by_section = hashmap_new(NULL);
  86         if (!network->routes_by_section)
  87                 return log_oom();
  88
  89         network->fdb_entries_by_section = hashmap_new(NULL);
  90         if (!network->fdb_entries_by_section)
  91                 return log_oom();
  92
  93         network->filename = strdup(filename);
  94         if (!network->filename)
  95                 return log_oom();
  96
  97         network->name = strdup(basename(filename));
  98         if (!network->name)
  99                 return log_oom();
 100
 101         d = strrchr(network->name, '.');
 102         if (!d)
 103                 return -EINVAL;
 104
 105         assert(streq(d, ".network"));
 106
 107         *d = '\0';
 108
 109         network->dhcp = ADDRESS_FAMILY_NO;
 110         network->dhcp_use_ntp = true;
 111         network->dhcp_use_dns = true;
 112         network->dhcp_use_hostname = true;
 113         network->dhcp_use_routes = true;
 114         network->dhcp_send_hostname = true;
 115         network->dhcp_route_metric = DHCP_ROUTE_METRIC;
 116         network->dhcp_client_identifier = DHCP_CLIENT_ID_DUID;
 117
 118         network->dhcp_server_emit_dns = true;
 119         network->dhcp_server_emit_ntp = true;
 120         network->dhcp_server_emit_router = true;
 121         network->dhcp_server_emit_timezone = true;
 122
 123         network->use_bpdu = true;
 124         network->allow_port_to_be_root = true;
 125         network->unicast_flood = true;
 126
 127         network->lldp_mode = LLDP_MODE_ROUTERS_ONLY;
 128
 129         network->llmnr = RESOLVE_SUPPORT_YES;
 130         network->mdns = RESOLVE_SUPPORT_NO;
 131         network->dnssec_mode = _DNSSEC_MODE_INVALID;
 132
 133         network->link_local = ADDRESS_FAMILY_IPV6;
 134
 135         network->ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO;
 136         network->ipv6_accept_ra = -1;
 137         network->ipv6_dad_transmits = -1;
 138         network->ipv6_hop_limit = -1;
 139         network->duid.type = _DUID_TYPE_INVALID;
 140         network->proxy_arp = -1;
 141         network->arp = -1;
 142         network->ipv6_accept_ra_use_dns = true;
 143
 144         dropin_dirname = strjoina("/", network->name, ".network.d");
 145
 146         r = strv_extend_strv_concat(&dropin_dirs, (char**) network_dirs, dropin_dirname);
 147         if (r < 0)
 148                 return r;
 149
 150         r = strv_make_nulstr(dropin_dirs, &dropin_dirs_nulstr, &dropin_dirs_nulstr_size);
 151         if (r < 0)
 152                 return r;
 153
 154         r = config_parse_many_nulstr(filename, dropin_dirs_nulstr,
 155                          "Match\0"
 156                          "Link\0"
 157                          "Network\0"
 158                          "Address\0"
 159                          "Route\0"
 160                          "DHCP\0"
 161                          "DHCPv4\0" /* compat */
 162                          "DHCPServer\0"
 163                          "IPv6AcceptRA\0"
 164                          "Bridge\0"
 165                          "BridgeFDB\0"
 166                          "BridgeVLAN\0",
 167                          config_item_perf_lookup, network_network_gperf_lookup,
 168                          false, network);
 169         if (r < 0)
 170                 return r;
 171
 172         /* IPMasquerade=yes implies IPForward=yes */
 173         if (network->ip_masquerade)
 174                 network->ip_forward |= ADDRESS_FAMILY_IPV4;
 175
 176         LIST_PREPEND(networks, manager->networks, network);
 177
 178         r = hashmap_ensure_allocated(&manager->networks_by_name, &string_hash_ops);
 179         if (r < 0)
 180                 return r;
 181
 182         r = hashmap_put(manager->networks_by_name, network->name, network);
 183         if (r < 0)
 184                 return r;
 185
 186         LIST_FOREACH(routes, route, network->static_routes) {
 187                 if (!route->family) {
 188                         log_warning("Route section without Gateway field configured in %s. "
 189                                     "Ignoring", filename);
 190                         return 0;
 191                 }
 192         }
 193
 194         LIST_FOREACH(addresses, address, network->static_addresses) {
 195                 if (!address->family) {
 196                         log_warning("Address section without Address field configured in %s. "
 197                                     "Ignoring", filename);
 198                         return 0;
 199                 }
 200         }
 201
 202         network = NULL;
 203
 204         return 0;
 205 }
 206
 207 int network_load(Manager *manager) {
 208         Network *network;
 209         _cleanup_strv_free_ char **files = NULL;
 210         char **f;
 211         int r;
 212
 213         assert(manager);
 214
 215         while ((network = manager->networks))
 216                 network_free(network);
 217
 218         r = conf_files_list_strv(&files, ".network", NULL, network_dirs);
 219         if (r < 0)
 220                 return log_error_errno(r, "Failed to enumerate network files: %m");
 221
 222         STRV_FOREACH_BACKWARDS(f, files) {
 223                 r = network_load_one(manager, *f);
 224                 if (r < 0)
 225                         return r;
 226         }
 227
 228         return 0;
 229 }
 230
 231 void network_free(Network *network) {
 232         NetDev *netdev;
 233         Route *route;
 234         Address *address;
 235         FdbEntry *fdb_entry;
 236         Iterator i;
 237
 238         if (!network)
 239                 return;
 240
 241         free(network->filename);
 242
 243         free(network->match_mac);
 244         strv_free(network->match_path);
 245         strv_free(network->match_driver);
 246         strv_free(network->match_type);
 247         strv_free(network->match_name);
 248
 249         free(network->description);
 250         free(network->dhcp_vendor_class_identifier);
 251         free(network->dhcp_hostname);
 252
 253         free(network->mac);
 254
 255         strv_free(network->ntp);
 256         strv_free(network->dns);
 257         strv_free(network->search_domains);
 258         strv_free(network->route_domains);
 259         strv_free(network->bind_carrier);
 260
 261         netdev_unref(network->bridge);
 262         netdev_unref(network->bond);
 263         netdev_unref(network->vrf);
 264
 265         HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) {
 266                 hashmap_remove(network->stacked_netdevs, netdev->ifname);
 267                 netdev_unref(netdev);
 268         }
 269         hashmap_free(network->stacked_netdevs);
 270
 271         while ((route = network->static_routes))
 272                 route_free(route);
 273
 274         while ((address = network->static_addresses))
 275                 address_free(address);
 276
 277         while ((fdb_entry = network->static_fdb_entries))
 278                 fdb_entry_free(fdb_entry);
 279
 280         hashmap_free(network->addresses_by_section);
 281         hashmap_free(network->routes_by_section);
 282         hashmap_free(network->fdb_entries_by_section);
 283
 284         if (network->manager) {
 285                 if (network->manager->networks)
 286                         LIST_REMOVE(networks, network->manager->networks, network);
 287
 288                 if (network->manager->networks_by_name)
 289                         hashmap_remove(network->manager->networks_by_name, network->name);
 290         }
 291
 292         free(network->name);
 293
 294         condition_free_list(network->match_host);
 295         condition_free_list(network->match_virt);
 296         condition_free_list(network->match_kernel);
 297         condition_free_list(network->match_arch);
 298
 299         free(network->dhcp_server_timezone);
 300         free(network->dhcp_server_dns);
 301         free(network->dhcp_server_ntp);
 302
 303         set_free_free(network->dnssec_negative_trust_anchors);
 304
 305         free(network);
 306 }
 307
 308 int network_get_by_name(Manager *manager, const char *name, Network **ret) {
 309         Network *network;
 310
 311         assert(manager);
 312         assert(name);
 313         assert(ret);
 314
 315         network = hashmap_get(manager->networks_by_name, name);
 316         if (!network)
 317                 return -ENOENT;
 318
 319         *ret = network;
 320
 321         return 0;
 322 }
 323
 324 int network_get(Manager *manager, struct udev_device *device,
 325                 const char *ifname, const struct ether_addr *address,
 326                 Network **ret) {
 327         Network *network;
 328         struct udev_device *parent;
 329         const char *path = NULL, *parent_driver = NULL, *driver = NULL, *devtype = NULL;
 330
 331         assert(manager);
 332         assert(ret);
 333
 334         if (device) {
 335                 path = udev_device_get_property_value(device, "ID_PATH");
 336
 337                 parent = udev_device_get_parent(device);
 338                 if (parent)
 339                         parent_driver = udev_device_get_driver(parent);
 340
 341                 driver = udev_device_get_property_value(device, "ID_NET_DRIVER");
 342
 343                 devtype = udev_device_get_devtype(device);
 344         }
 345
 346         LIST_FOREACH(networks, network, manager->networks) {
 347                 if (net_match_config(network->match_mac, network->match_path,
 348                                      network->match_driver, network->match_type,
 349                                      network->match_name, network->match_host,
 350                                      network->match_virt, network->match_kernel,
 351                                      network->match_arch,
 352                                      address, path, parent_driver, driver,
 353                                      devtype, ifname)) {
 354                         if (network->match_name && device) {
 355                                 const char *attr;
 356                                 uint8_t name_assign_type = NET_NAME_UNKNOWN;
 357
 358                                 attr = udev_device_get_sysattr_value(device, "name_assign_type");
 359                                 if (attr)
 360                                         (void) safe_atou8(attr, &name_assign_type);
 361
 362                                 if (name_assign_type == NET_NAME_ENUM)
 363                                         log_warning("%s: found matching network '%s', based on potentially unpredictable ifname",
 364                                                     ifname, network->filename);
 365                                 else
 366                                         log_debug("%s: found matching network '%s'", ifname, network->filename);
 367                         } else
 368                                 log_debug("%s: found matching network '%s'", ifname, network->filename);
 369
 370                         *ret = network;
 371                         return 0;
 372                 }
 373         }
 374
 375         *ret = NULL;
 376
 377         return -ENOENT;
 378 }
 379
 380 int network_apply(Manager *manager, Network *network, Link *link) {
 381         int r;
 382
 383         assert(manager);
 384         assert(network);
 385         assert(link);
 386
 387         link->network = network;
 388
 389         if (network->ipv4ll_route) {
 390                 Route *route;
 391
 392                 r = route_new_static(network, 0, &route);
 393                 if (r < 0)
 394                         return r;
 395
 396                 r = inet_pton(AF_INET, "169.254.0.0", &route->dst.in);
 397                 if (r == 0)
 398                         return -EINVAL;
 399                 if (r < 0)
 400                         return -errno;
 401
 402                 route->family = AF_INET;
 403                 route->dst_prefixlen = 16;
 404                 route->scope = RT_SCOPE_LINK;
 405                 route->priority = IPV4LL_ROUTE_METRIC;
 406                 route->protocol = RTPROT_STATIC;
 407         }
 408
 409         if (!strv_isempty(network->dns) ||
 410             !strv_isempty(network->ntp) ||
 411             !strv_isempty(network->search_domains) ||
 412             !strv_isempty(network->route_domains))
 413                 link_dirty(link);
 414
 415         return 0;
 416 }
 417
 418 bool network_has_static_ipv6_addresses(Network *network) {
 419         Address *address;
 420
 421         assert(network);
 422
 423         LIST_FOREACH(addresses, address, network->static_addresses) {
 424                 if (address->family == AF_INET6)
 425                         return true;
 426         }
 427
 428         return false;
 429 }
 430
 431 int config_parse_netdev(const char *unit,
 432                 const char *filename,
 433                 unsigned line,
 434                 const char *section,
 435                 unsigned section_line,
 436                 const char *lvalue,
 437                 int ltype,
 438                 const char *rvalue,
 439                 void *data,
 440                 void *userdata) {
 441         Network *network = userdata;
 442         _cleanup_free_ char *kind_string = NULL;
 443         char *p;
 444         NetDev *netdev;
 445         NetDevKind kind;
 446         int r;
 447
 448         assert(filename);
 449         assert(lvalue);
 450         assert(rvalue);
 451         assert(data);
 452
 453         kind_string = strdup(lvalue);
 454         if (!kind_string)
 455                 return log_oom();
 456
 457         /* the keys are CamelCase versions of the kind */
 458         for (p = kind_string; *p; p++)
 459                 *p = tolower(*p);
 460
 461         kind = netdev_kind_from_string(kind_string);
 462         if (kind == _NETDEV_KIND_INVALID) {
 463                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid NetDev kind: %s", lvalue);
 464                 return 0;
 465         }
 466
 467         r = netdev_get(network->manager, rvalue, &netdev);
 468         if (r < 0) {
 469                 log_syntax(unit, LOG_ERR, filename, line, r, "%s could not be found, ignoring assignment: %s", lvalue, rvalue);
 470                 return 0;
 471         }
 472
 473         if (netdev->kind != kind) {
 474                 log_syntax(unit, LOG_ERR, filename, line, 0, "NetDev is not a %s, ignoring assignment: %s", lvalue, rvalue);
 475                 return 0;
 476         }
 477
 478         switch (kind) {
 479         case NETDEV_KIND_BRIDGE:
 480                 network->bridge = netdev;
 481
 482                 break;
 483         case NETDEV_KIND_BOND:
 484                 network->bond = netdev;
 485
 486                 break;
 487         case NETDEV_KIND_VRF:
 488                 network->vrf = netdev;
 489
 490                 break;
 491         case NETDEV_KIND_VLAN:
 492         case NETDEV_KIND_MACVLAN:
 493         case NETDEV_KIND_MACVTAP:
 494         case NETDEV_KIND_IPVLAN:
 495         case NETDEV_KIND_VXLAN:
 496                 r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
 497                 if (r < 0) {
 498                         log_syntax(unit, LOG_ERR, filename, line, r, "Can not add VLAN '%s' to network: %m", rvalue);
 499                         return 0;
 500                 }
 501
 502                 break;
 503         default:
 504                 assert_not_reached("Can not parse NetDev");
 505         }
 506
 507         netdev_ref(netdev);
 508
 509         return 0;
 510 }
 511
 512 int config_parse_domains(
 513                 const char *unit,
 514                 const char *filename,
 515                 unsigned line,
 516                 const char *section,
 517                 unsigned section_line,
 518                 const char *lvalue,
 519                 int ltype,
 520                 const char *rvalue,
 521                 void *data,
 522                 void *userdata) {
 523
 524         const char *p;
 525         Network *n = data;
 526         int r;
 527
 528         assert(n);
 529         assert(lvalue);
 530         assert(rvalue);
 531
 532         if (isempty(rvalue)) {
 533                 n->search_domains = strv_free(n->search_domains);
 534                 n->route_domains = strv_free(n->route_domains);
 535                 return 0;
 536         }
 537
 538         p = rvalue;
 539         for (;;) {
 540                 _cleanup_free_ char *w = NULL, *normalized = NULL;
 541                 const char *domain;
 542                 bool is_route;
 543
 544                 r = extract_first_word(&p, &w, NULL, 0);
 545                 if (r < 0) {
 546                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract search or route domain, ignoring: %s", rvalue);
 547                         break;
 548                 }
 549                 if (r == 0)
 550                         break;
 551
 552                 is_route = w[0] == '~';
 553                 domain = is_route ? w + 1 : w;
 554
 555                 if (dns_name_is_root(domain) || streq(domain, "*")) {
 556                         /* If the root domain appears as is, or the special token "*" is found, we'll consider this as
 557                          * routing domain, unconditionally. */
 558                         is_route = true;
 559                         domain = "."; /* make sure we don't allow empty strings, thus write the root domain as "." */
 560
 561                 } else {
 562                         r = dns_name_normalize(domain, &normalized);
 563                         if (r < 0) {
 564                                 log_syntax(unit, LOG_ERR, filename, line, r, "'%s' is not a valid domain name, ignoring.", domain);
 565                                 continue;
 566                         }
 567
 568                         domain = normalized;
 569
 570                         if (is_localhost(domain)) {
 571                                 log_syntax(unit, LOG_ERR, filename, line, 0, "'localhost' domain names may not be configure as search or route domains, ignoring assignment: %s", domain);
 572                                 continue;
 573                         }
 574                 }
 575
 576                 if (is_route) {
 577                         r = strv_extend(&n->route_domains, domain);
 578                         if (r < 0)
 579                                 return log_oom();
 580
 581                 } else {
 582                         r = strv_extend(&n->search_domains, domain);
 583                         if (r < 0)
 584                                 return log_oom();
 585                 }
 586         }
 587
 588         strv_uniq(n->route_domains);
 589         strv_uniq(n->search_domains);
 590
 591         return 0;
 592 }
 593
 594 int config_parse_tunnel(const char *unit,
 595                         const char *filename,
 596                         unsigned line,
 597                         const char *section,
 598                         unsigned section_line,
 599                         const char *lvalue,
 600                         int ltype,
 601                         const char *rvalue,
 602                         void *data,
 603                         void *userdata) {
 604         Network *network = userdata;
 605         NetDev *netdev;
 606         int r;
 607
 608         assert(filename);
 609         assert(lvalue);
 610         assert(rvalue);
 611         assert(data);
 612
 613         r = netdev_get(network->manager, rvalue, &netdev);
 614         if (r < 0) {
 615                 log_syntax(unit, LOG_ERR, filename, line, r, "Tunnel is invalid, ignoring assignment: %s", rvalue);
 616                 return 0;
 617         }
 618
 619         if (netdev->kind != NETDEV_KIND_IPIP &&
 620             netdev->kind != NETDEV_KIND_SIT &&
 621             netdev->kind != NETDEV_KIND_GRE &&
 622             netdev->kind != NETDEV_KIND_GRETAP &&
 623             netdev->kind != NETDEV_KIND_IP6GRE &&
 624             netdev->kind != NETDEV_KIND_IP6GRETAP &&
 625             netdev->kind != NETDEV_KIND_VTI &&
 626             netdev->kind != NETDEV_KIND_VTI6 &&
 627             netdev->kind != NETDEV_KIND_IP6TNL
 628             ) {
 629                 log_syntax(unit, LOG_ERR, filename, line, 0,
 630                            "NetDev is not a tunnel, ignoring assignment: %s", rvalue);
 631                 return 0;
 632         }
 633
 634         r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
 635         if (r < 0) {
 636                 log_syntax(unit, LOG_ERR, filename, line, r, "Cannot add VLAN '%s' to network, ignoring: %m", rvalue);
 637                 return 0;
 638         }
 639
 640         netdev_ref(netdev);
 641
 642         return 0;
 643 }
 644
 645 int config_parse_ipv4ll(
 646                 const char* unit,
 647                 const char *filename,
 648                 unsigned line,
 649                 const char *section,
 650                 unsigned section_line,
 651                 const char *lvalue,
 652                 int ltype,
 653                 const char *rvalue,
 654                 void *data,
 655                 void *userdata) {
 656
 657         AddressFamilyBoolean *link_local = data;
 658
 659         assert(filename);
 660         assert(lvalue);
 661         assert(rvalue);
 662         assert(data);
 663
 664         /* Note that this is mostly like
 665          * config_parse_address_family_boolean(), except that it
 666          * applies only to IPv4 */
 667
 668         SET_FLAG(*link_local, ADDRESS_FAMILY_IPV4, parse_boolean(rvalue));
 669
 670         return 0;
 671 }
 672
 673 int config_parse_dhcp(
 674                 const char* unit,
 675                 const char *filename,
 676                 unsigned line,
 677                 const char *section,
 678                 unsigned section_line,
 679                 const char *lvalue,
 680                 int ltype,
 681                 const char *rvalue,
 682                 void *data,
 683                 void *userdata) {
 684
 685         AddressFamilyBoolean *dhcp = data, s;
 686
 687         assert(filename);
 688         assert(lvalue);
 689         assert(rvalue);
 690         assert(data);
 691
 692         /* Note that this is mostly like
 693          * config_parse_address_family_boolean(), except that it
 694          * understands some old names for the enum values */
 695
 696         s = address_family_boolean_from_string(rvalue);
 697         if (s < 0) {
 698
 699                 /* Previously, we had a slightly different enum here,
 700                  * support its values for compatbility. */
 701
 702                 if (streq(rvalue, "none"))
 703                         s = ADDRESS_FAMILY_NO;
 704                 else if (streq(rvalue, "v4"))
 705                         s = ADDRESS_FAMILY_IPV4;
 706                 else if (streq(rvalue, "v6"))
 707                         s = ADDRESS_FAMILY_IPV6;
 708                 else if (streq(rvalue, "both"))
 709                         s = ADDRESS_FAMILY_YES;
 710                 else {
 711                         log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse DHCP option, ignoring: %s", rvalue);
 712                         return 0;
 713                 }
 714         }
 715
 716         *dhcp = s;
 717         return 0;
 718 }
 719
 720 static const char* const dhcp_client_identifier_table[_DHCP_CLIENT_ID_MAX] = {
 721         [DHCP_CLIENT_ID_MAC] = "mac",
 722         [DHCP_CLIENT_ID_DUID] = "duid"
 723 };
 724
 725 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_client_identifier, DCHPClientIdentifier);
 726 DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_client_identifier, dhcp_client_identifier, DCHPClientIdentifier, "Failed to parse client identifier type");
 727
 728 int config_parse_ipv6token(
 729                 const char* unit,
 730                 const char *filename,
 731                 unsigned line,
 732                 const char *section,
 733                 unsigned section_line,
 734                 const char *lvalue,
 735                 int ltype,
 736                 const char *rvalue,
 737                 void *data,
 738                 void *userdata) {
 739
 740         union in_addr_union buffer;
 741         struct in6_addr *token = data;
 742         int r;
 743
 744         assert(filename);
 745         assert(lvalue);
 746         assert(rvalue);
 747         assert(token);
 748
 749         r = in_addr_from_string(AF_INET6, rvalue, &buffer);
 750         if (r < 0) {
 751                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IPv6 token, ignoring: %s", rvalue);
 752                 return 0;
 753         }
 754
 755         r = in_addr_is_null(AF_INET6, &buffer);
 756         if (r != 0) {
 757                 log_syntax(unit, LOG_ERR, filename, line, r, "IPv6 token can not be the ANY address, ignoring: %s", rvalue);
 758                 return 0;
 759         }
 760
 761         if ((buffer.in6.s6_addr32[0] | buffer.in6.s6_addr32[1]) != 0) {
 762                 log_syntax(unit, LOG_ERR, filename, line, 0, "IPv6 token can not be longer than 64 bits, ignoring: %s", rvalue);
 763                 return 0;
 764         }
 765
 766         *token = buffer.in6;
 767
 768         return 0;
 769 }
 770
 771 static const char* const ipv6_privacy_extensions_table[_IPV6_PRIVACY_EXTENSIONS_MAX] = {
 772         [IPV6_PRIVACY_EXTENSIONS_NO] = "no",
 773         [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC] = "prefer-public",
 774         [IPV6_PRIVACY_EXTENSIONS_YES] = "yes",
 775 };
 776
 777 DEFINE_STRING_TABLE_LOOKUP(ipv6_privacy_extensions, IPv6PrivacyExtensions);
 778
 779 int config_parse_ipv6_privacy_extensions(
 780                 const char* unit,
 781                 const char *filename,
 782                 unsigned line,
 783                 const char *section,
 784                 unsigned section_line,
 785                 const char *lvalue,
 786                 int ltype,
 787                 const char *rvalue,
 788                 void *data,
 789                 void *userdata) {
 790
 791         IPv6PrivacyExtensions *ipv6_privacy_extensions = data;
 792         int k;
 793
 794         assert(filename);
 795         assert(lvalue);
 796         assert(rvalue);
 797         assert(ipv6_privacy_extensions);
 798
 799         /* Our enum shall be a superset of booleans, hence first try
 800          * to parse as boolean, and then as enum */
 801
 802         k = parse_boolean(rvalue);
 803         if (k > 0)
 804                 *ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_YES;
 805         else if (k == 0)
 806                 *ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO;
 807         else {
 808                 IPv6PrivacyExtensions s;
 809
 810                 s = ipv6_privacy_extensions_from_string(rvalue);
 811                 if (s < 0) {
 812
 813                         if (streq(rvalue, "kernel"))
 814                                 s = _IPV6_PRIVACY_EXTENSIONS_INVALID;
 815                         else {
 816                                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue);
 817                                 return 0;
 818                         }
 819                 }
 820
 821                 *ipv6_privacy_extensions = s;
 822         }
 823
 824         return 0;
 825 }
 826
 827 int config_parse_hostname(
 828                 const char *unit,
 829                 const char *filename,
 830                 unsigned line,
 831                 const char *section,
 832                 unsigned section_line,
 833                 const char *lvalue,
 834                 int ltype,
 835                 const char *rvalue,
 836                 void *data,
 837                 void *userdata) {
 838
 839         char **hostname = data, *hn = NULL;
 840         int r;
 841
 842         assert(filename);
 843         assert(lvalue);
 844         assert(rvalue);
 845
 846         r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &hn, userdata);
 847         if (r < 0)
 848                 return r;
 849
 850         if (!hostname_is_valid(hn, false)) {
 851                 log_syntax(unit, LOG_ERR, filename, line, 0, "Hostname is not valid, ignoring assignment: %s", rvalue);
 852                 free(hn);
 853                 return 0;
 854         }
 855
 856         free(*hostname);
 857         *hostname = hostname_cleanup(hn);
 858         return 0;
 859 }
 860
 861 int config_parse_timezone(
 862                 const char *unit,
 863                 const char *filename,
 864                 unsigned line,
 865                 const char *section,
 866                 unsigned section_line,
 867                 const char *lvalue,
 868                 int ltype,
 869                 const char *rvalue,
 870                 void *data,
 871                 void *userdata) {
 872
 873         char **datap = data, *tz = NULL;
 874         int r;
 875
 876         assert(filename);
 877         assert(lvalue);
 878         assert(rvalue);
 879
 880         r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &tz, userdata);
 881         if (r < 0)
 882                 return r;
 883
 884         if (!timezone_is_valid(tz)) {
 885                 log_syntax(unit, LOG_ERR, filename, line, 0, "Timezone is not valid, ignoring assignment: %s", rvalue);
 886                 free(tz);
 887                 return 0;
 888         }
 889
 890         free(*datap);
 891         *datap = tz;
 892
 893         return 0;
 894 }
 895
 896 int config_parse_dhcp_server_dns(
 897                 const char *unit,
 898                 const char *filename,
 899                 unsigned line,
 900                 const char *section,
 901                 unsigned section_line,
 902                 const char *lvalue,
 903                 int ltype,
 904                 const char *rvalue,
 905                 void *data,
 906                 void *userdata) {
 907
 908         Network *n = data;
 909         const char *p = rvalue;
 910         int r;
 911
 912         assert(filename);
 913         assert(lvalue);
 914         assert(rvalue);
 915
 916         for (;;) {
 917                 _cleanup_free_ char *w = NULL;
 918                 struct in_addr a, *m;
 919
 920                 r = extract_first_word(&p, &w, NULL, 0);
 921                 if (r < 0) {
 922                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract word, ignoring: %s", rvalue);
 923                         return 0;
 924                 }
 925
 926                 if (r == 0)
 927                         return 0;
 928
 929                 if (inet_pton(AF_INET, w, &a) <= 0) {
 930                         log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse DNS server address, ignoring: %s", w);
 931                         continue;
 932                 }
 933
 934                 m = realloc(n->dhcp_server_dns, (n->n_dhcp_server_dns + 1) * sizeof(struct in_addr));
 935                 if (!m)
 936                         return log_oom();
 937
 938                 m[n->n_dhcp_server_dns++] = a;
 939                 n->dhcp_server_dns = m;
 940         }
 941 }
 942
 943 int config_parse_dhcp_server_ntp(
 944                 const char *unit,
 945                 const char *filename,
 946                 unsigned line,
 947                 const char *section,
 948                 unsigned section_line,
 949                 const char *lvalue,
 950                 int ltype,
 951                 const char *rvalue,
 952                 void *data,
 953                 void *userdata) {
 954
 955         Network *n = data;
 956         const char *p = rvalue;
 957         int r;
 958
 959         assert(filename);
 960         assert(lvalue);
 961         assert(rvalue);
 962
 963         for (;;) {
 964                 _cleanup_free_ char *w = NULL;
 965                 struct in_addr a, *m;
 966
 967                 r = extract_first_word(&p, &w, NULL, 0);
 968                 if (r < 0) {
 969                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract word, ignoring: %s", rvalue);
 970                         return 0;
 971                 }
 972
 973                 if (r == 0)
 974                         return 0;
 975
 976                 if (inet_pton(AF_INET, w, &a) <= 0) {
 977                         log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse NTP server address, ignoring: %s", w);
 978                         continue;
 979                 }
 980
 981                 m = realloc(n->dhcp_server_ntp, (n->n_dhcp_server_ntp + 1) * sizeof(struct in_addr));
 982                 if (!m)
 983                         return log_oom();
 984
 985                 m[n->n_dhcp_server_ntp++] = a;
 986                 n->dhcp_server_ntp = m;
 987         }
 988 }
 989
 990 int config_parse_dnssec_negative_trust_anchors(
 991                 const char *unit,
 992                 const char *filename,
 993                 unsigned line,
 994                 const char *section,
 995                 unsigned section_line,
 996                 const char *lvalue,
 997                 int ltype,
 998                 const char *rvalue,
 999                 void *data,
1000                 void *userdata) {
1001
1002         const char *p = rvalue;
1003         Network *n = data;
1004         int r;
1005
1006         assert(n);
1007         assert(lvalue);
1008         assert(rvalue);
1009
1010         if (isempty(rvalue)) {
1011                 n->dnssec_negative_trust_anchors = set_free_free(n->dnssec_negative_trust_anchors);
1012                 return 0;
1013         }
1014
1015         for (;;) {
1016                 _cleanup_free_ char *w = NULL;
1017
1018                 r = extract_first_word(&p, &w, NULL, 0);
1019                 if (r < 0) {
1020                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract negative trust anchor domain, ignoring: %s", rvalue);
1021                         break;
1022                 }
1023                 if (r == 0)
1024                         break;
1025
1026                 r = dns_name_is_valid(w);
1027                 if (r <= 0) {
1028                         log_syntax(unit, LOG_ERR, filename, line, r, "%s is not a valid domain name, ignoring.", w);
1029                         continue;
1030                 }
1031
1032                 r = set_ensure_allocated(&n->dnssec_negative_trust_anchors, &dns_name_hash_ops);
1033                 if (r < 0)
1034                         return log_oom();
1035
1036                 r = set_put(n->dnssec_negative_trust_anchors, w);
1037                 if (r < 0)
1038                         return log_oom();
1039                 if (r > 0)
1040                         w = NULL;
1041         }
1042
1043         return 0;
1044 }
1045
1046 DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_use_domains, dhcp_use_domains, DHCPUseDomains, "Failed to parse DHCP use domains setting");
1047
1048 static const char* const dhcp_use_domains_table[_DHCP_USE_DOMAINS_MAX] = {
1049         [DHCP_USE_DOMAINS_NO] = "no",
1050         [DHCP_USE_DOMAINS_ROUTE] = "route",
1051         [DHCP_USE_DOMAINS_YES] = "yes",
1052 };
1053
1054 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(dhcp_use_domains, DHCPUseDomains, DHCP_USE_DOMAINS_YES);
1055
1056 DEFINE_CONFIG_PARSE_ENUM(config_parse_lldp_mode, lldp_mode, LLDPMode, "Failed to parse LLDP= setting.");
1057
1058 static const char* const lldp_mode_table[_LLDP_MODE_MAX] = {
1059         [LLDP_MODE_NO] = "no",
1060         [LLDP_MODE_YES] = "yes",
1061         [LLDP_MODE_ROUTERS_ONLY] = "routers-only",
1062 };
1063
1064 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(lldp_mode, LLDPMode, LLDP_MODE_YES);