options.c

   1 /*
   2  * firewall3 - 3rd OpenWrt UCI firewall implementation
   3  *
   4  *   Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include "options.h"
  20 #include "ubus.h"
  21
  22
  23 static bool
  24 put_value(void *ptr, void *val, int elem_size, bool is_list)
  25 {
  26         void *copy;
  27
  28         if (is_list)
  29         {
  30                 copy = malloc(elem_size);
  31
  32                 if (!copy)
  33                         return false;
  34
  35                 memcpy(copy, val, elem_size);
  36                 list_add_tail((struct list_head *)copy, (struct list_head *)ptr);
  37                 return true;
  38         }
  39
  40         memcpy(ptr, val, elem_size);
  41         return false;
  42 }
  43
  44 static bool
  45 parse_enum(void *ptr, const char *val, const char **values, int min, int max)
  46 {
  47         int i, l = strlen(val);
  48
  49         if (l > 0)
  50         {
  51                 for (i = 0; i <= (max - min); i++)
  52                 {
  53                         if (!strncasecmp(val, values[i], l))
  54                         {
  55                                 *((int *)ptr) = min + i;
  56                                 return true;
  57                         }
  58                 }
  59         }
  60
  61         return false;
  62 }
  63
  64
  65 const char *fw3_flag_names[__FW3_FLAG_MAX] = {
  66         "filter",
  67         "nat",
  68         "mangle",
  69         "raw",
  70
  71         "IPv4",
  72         "IPv6",
  73
  74         "ACCEPT",
  75         "REJECT",
  76         "DROP",
  77         "NOTRACK",
  78         "MARK",
  79         "DNAT",
  80         "SNAT",
  81
  82         "ACCEPT",
  83         "REJECT",
  84         "DROP",
  85 };
  86
  87 const char *fw3_limit_units[__FW3_LIMIT_UNIT_MAX] = {
  88         "second",
  89         "minute",
  90         "hour",
  91         "day",
  92 };
  93
  94 const char *fw3_ipset_method_names[__FW3_IPSET_METHOD_MAX] = {
  95         "(bug)",
  96         "bitmap",
  97         "hash",
  98         "list",
  99 };
 100
 101 const char *fw3_ipset_type_names[__FW3_IPSET_TYPE_MAX] = {
 102         "(bug)",
 103         "ip",
 104         "port",
 105         "mac",
 106         "net",
 107         "set",
 108 };
 109
 110 static const char *weekdays[] = {
 111         "monday",
 112         "tuesday",
 113         "wednesday",
 114         "thursday",
 115         "friday",
 116         "saturday",
 117         "sunday",
 118 };
 119
 120 static const char *include_types[] = {
 121         "script",
 122         "restore",
 123 };
 124
 125 static const char *reflection_sources[] = {
 126         "internal",
 127         "external",
 128 };
 129
 130
 131 bool
 132 fw3_parse_bool(void *ptr, const char *val, bool is_list)
 133 {
 134         if (!strcmp(val, "true") || !strcmp(val, "yes") || !strcmp(val, "1"))
 135                 *((bool *)ptr) = true;
 136         else
 137                 *((bool *)ptr) = false;
 138
 139         return true;
 140 }
 141
 142 bool
 143 fw3_parse_int(void *ptr, const char *val, bool is_list)
 144 {
 145         int n = strtol(val, NULL, 0);
 146
 147         if (errno == ERANGE || errno == EINVAL)
 148                 return false;
 149
 150         *((int *)ptr) = n;
 151
 152         return true;
 153 }
 154
 155 bool
 156 fw3_parse_string(void *ptr, const char *val, bool is_list)
 157 {
 158         *((char **)ptr) = (char *)val;
 159         return true;
 160 }
 161
 162 bool
 163 fw3_parse_target(void *ptr, const char *val, bool is_list)
 164 {
 165         return parse_enum(ptr, val, &fw3_flag_names[FW3_FLAG_ACCEPT],
 166                           FW3_FLAG_ACCEPT, FW3_FLAG_SNAT);
 167 }
 168
 169 bool
 170 fw3_parse_limit(void *ptr, const char *val, bool is_list)
 171 {
 172         struct fw3_limit *limit = ptr;
 173         enum fw3_limit_unit u = FW3_LIMIT_UNIT_SECOND;
 174         char *e;
 175         int n;
 176
 177         if (*val == '!')
 178         {
 179                 limit->invert = true;
 180                 while (isspace(*++val));
 181         }
 182
 183         n = strtol(val, &e, 10);
 184
 185         if (errno == ERANGE || errno == EINVAL)
 186                 return false;
 187
 188         if (*e && *e++ != '/')
 189                 return false;
 190
 191         if (!strlen(e))
 192                 return false;
 193
 194         if (!parse_enum(&u, e, fw3_limit_units, 0, FW3_LIMIT_UNIT_DAY))
 195                 return false;
 196
 197         limit->rate = n;
 198         limit->unit = u;
 199
 200         return true;
 201 }
 202
 203 bool
 204 fw3_parse_device(void *ptr, const char *val, bool is_list)
 205 {
 206         char *p;
 207         struct fw3_device dev = { };
 208
 209         if (*val == '*')
 210         {
 211                 dev.set = true;
 212                 dev.any = true;
 213                 put_value(ptr, &dev, sizeof(dev), is_list);
 214                 return true;
 215         }
 216
 217         if (*val == '!')
 218         {
 219                 dev.invert = true;
 220                 while (isspace(*++val));
 221         }
 222
 223         if ((p = strchr(val, '@')) != NULL)
 224         {
 225                 *p++ = 0;
 226                 snprintf(dev.network, sizeof(dev.network), "%s", p);
 227         }
 228
 229         if (*val)
 230                 snprintf(dev.name, sizeof(dev.name), "%s", val);
 231         else
 232                 return false;
 233
 234         dev.set = true;
 235         put_value(ptr, &dev, sizeof(dev), is_list);
 236         return true;
 237 }
 238
 239 bool
 240 fw3_parse_address(void *ptr, const char *val, bool is_list)
 241 {
 242         struct fw3_address addr = { };
 243         struct in_addr v4;
 244         struct in6_addr v6;
 245         char *p, *s, *e;
 246         int i, m = -1;
 247
 248         if (*val == '!')
 249         {
 250                 addr.invert = true;
 251                 while (isspace(*++val));
 252         }
 253
 254         s = strdup(val);
 255
 256         if (!s)
 257                 return false;
 258
 259         if ((p = strchr(s, '/')) != NULL)
 260         {
 261                 *p++ = 0;
 262                 m = strtoul(p, &e, 10);
 263
 264                 if ((e == p) || (*e != 0))
 265                 {
 266                         if (strchr(s, ':') || !inet_pton(AF_INET, p, &v4))
 267                         {
 268                                 free(s);
 269                                 return false;
 270                         }
 271
 272                         for (i = 0, m = 32; !(v4.s_addr & 1) && (i < 32); i++)
 273                         {
 274                                 m--;
 275                                 v4.s_addr >>= 1;
 276                         }
 277                 }
 278         }
 279         else if ((p = strchr(s, '-')) != NULL)
 280         {
 281                 *p++ = 0;
 282
 283                 if (inet_pton(AF_INET6, p, &v6))
 284                 {
 285                         addr.family = FW3_FAMILY_V6;
 286                         addr.address2.v6 = v6;
 287                         addr.range = true;
 288                 }
 289                 else if (inet_pton(AF_INET, p, &v4))
 290                 {
 291                         addr.family = FW3_FAMILY_V4;
 292                         addr.address2.v4 = v4;
 293                         addr.range = true;
 294                 }
 295                 else
 296                 {
 297                         free(s);
 298                         return false;
 299                 }
 300         }
 301
 302         if (inet_pton(AF_INET6, s, &v6))
 303         {
 304                 addr.family = FW3_FAMILY_V6;
 305                 addr.address.v6 = v6;
 306                 addr.mask = (m >= 0) ? m : 128;
 307         }
 308         else if (inet_pton(AF_INET, s, &v4))
 309         {
 310                 addr.family = FW3_FAMILY_V4;
 311                 addr.address.v4 = v4;
 312                 addr.mask = (m >= 0) ? m : 32;
 313         }
 314         else
 315         {
 316                 free(s);
 317                 return false;
 318         }
 319
 320         free(s);
 321         addr.set = true;
 322         put_value(ptr, &addr, sizeof(addr), is_list);
 323         return true;
 324 }
 325
 326 bool
 327 fw3_parse_network(void *ptr, const char *val, bool is_list)
 328 {
 329         struct fw3_device dev = { };
 330         struct fw3_address *addr;
 331         struct list_head *addr_list;
 332
 333         if (!fw3_parse_address(ptr, val, is_list))
 334         {
 335                 if (!fw3_parse_device(&dev, val, false))
 336                         return false;
 337
 338                 addr_list = fw3_ubus_address(dev.name);
 339
 340                 if (addr_list)
 341                 {
 342                         list_for_each_entry(addr, addr_list, list)
 343                         {
 344                                 addr->invert = dev.invert;
 345
 346                                 if (!put_value(ptr, addr, sizeof(*addr), is_list))
 347                                         break;
 348                         }
 349
 350                         fw3_free_list(addr_list);
 351                 }
 352         }
 353
 354         return true;
 355 }
 356
 357 bool
 358 fw3_parse_mac(void *ptr, const char *val, bool is_list)
 359 {
 360         struct fw3_mac addr = { };
 361         struct ether_addr *mac;
 362
 363         if (*val == '!')
 364         {
 365                 addr.invert = true;
 366                 while (isspace(*++val));
 367         }
 368
 369         if ((mac = ether_aton(val)) != NULL)
 370         {
 371                 addr.mac = *mac;
 372                 addr.set = true;
 373
 374                 put_value(ptr, &addr, sizeof(addr), is_list);
 375                 return true;
 376         }
 377
 378         return false;
 379 }
 380
 381 bool
 382 fw3_parse_port(void *ptr, const char *val, bool is_list)
 383 {
 384         struct fw3_port range = { };
 385         uint16_t n;
 386         uint16_t m;
 387         char *p;
 388
 389         if (*val == '!')
 390         {
 391                 range.invert = true;
 392                 while (isspace(*++val));
 393         }
 394
 395         n = strtoul(val, &p, 10);
 396
 397         if (errno == ERANGE || errno == EINVAL)
 398                 return false;
 399
 400         if (*p && *p != '-' && *p != ':')
 401                 return false;
 402
 403         if (*p)
 404         {
 405                 m = strtoul(++p, NULL, 10);
 406
 407                 if (errno == ERANGE || errno == EINVAL || m < n)
 408                         return false;
 409
 410                 range.port_min = n;
 411                 range.port_max = m;
 412         }
 413         else
 414         {
 415                 range.port_min = n;
 416                 range.port_max = n;
 417         }
 418
 419         range.set = true;
 420         put_value(ptr, &range, sizeof(range), is_list);
 421         return true;
 422 }
 423
 424 bool
 425 fw3_parse_family(void *ptr, const char *val, bool is_list)
 426 {
 427         if (!strcmp(val, "any"))
 428                 *((enum fw3_family *)ptr) = FW3_FAMILY_ANY;
 429         else if (!strcmp(val, "inet") || strrchr(val, '4'))
 430                 *((enum fw3_family *)ptr) = FW3_FAMILY_V4;
 431         else if (!strcmp(val, "inet6") || strrchr(val, '6'))
 432                 *((enum fw3_family *)ptr) = FW3_FAMILY_V6;
 433         else
 434                 return false;
 435
 436         return true;
 437 }
 438
 439 bool
 440 fw3_parse_icmptype(void *ptr, const char *val, bool is_list)
 441 {
 442         struct fw3_icmptype icmp = { };
 443         bool v4 = false;
 444         bool v6 = false;
 445         char *p;
 446         int i;
 447
 448         for (i = 0; i < ARRAY_SIZE(fw3_icmptype_list_v4); i++)
 449         {
 450                 if (!strcmp(val, fw3_icmptype_list_v4[i].name))
 451                 {
 452                         icmp.type     = fw3_icmptype_list_v4[i].type;
 453                         icmp.code_min = fw3_icmptype_list_v4[i].code_min;
 454                         icmp.code_max = fw3_icmptype_list_v4[i].code_max;
 455
 456                         v4 = true;
 457                         break;
 458                 }
 459         }
 460
 461         for (i = 0; i < ARRAY_SIZE(fw3_icmptype_list_v6); i++)
 462         {
 463                 if (!strcmp(val, fw3_icmptype_list_v6[i].name))
 464                 {
 465                         icmp.type6     = fw3_icmptype_list_v6[i].type;
 466                         icmp.code6_min = fw3_icmptype_list_v6[i].code_min;
 467                         icmp.code6_max = fw3_icmptype_list_v6[i].code_max;
 468
 469                         v6 = true;
 470                         break;
 471                 }
 472         }
 473
 474         if (!v4 && !v6)
 475         {
 476                 i = strtoul(val, &p, 10);
 477
 478                 if ((p == val) || (*p != '/' && *p != 0) || (i > 0xFF))
 479                         return false;
 480
 481                 icmp.type = i;
 482
 483                 if (*p == '/')
 484                 {
 485                         val = ++p;
 486                         i = strtoul(val, &p, 10);
 487
 488                         if ((p == val) || (*p != 0) || (i > 0xFF))
 489                                 return false;
 490
 491                         icmp.code_min = i;
 492                         icmp.code_max = i;
 493                 }
 494                 else
 495                 {
 496                         icmp.code_min = 0;
 497                         icmp.code_max = 0xFF;
 498                 }
 499
 500                 icmp.type6     = icmp.type;
 501                 icmp.code6_min = icmp.code_max;
 502                 icmp.code6_max = icmp.code_max;
 503
 504                 v4 = true;
 505                 v6 = true;
 506         }
 507
 508         icmp.family = (v4 && v6) ? FW3_FAMILY_ANY
 509                                  : (v6 ? FW3_FAMILY_V6 : FW3_FAMILY_V4);
 510
 511         put_value(ptr, &icmp, sizeof(icmp), is_list);
 512         return true;
 513 }
 514
 515 bool
 516 fw3_parse_protocol(void *ptr, const char *val, bool is_list)
 517 {
 518         struct fw3_protocol proto = { };
 519         struct protoent *ent;
 520
 521         if (*val == '!')
 522         {
 523                 proto.invert = true;
 524                 while (isspace(*++val));
 525         }
 526
 527         if (!strcmp(val, "all"))
 528         {
 529                 proto.any = true;
 530                 put_value(ptr, &proto, sizeof(proto), is_list);
 531                 return true;
 532         }
 533         else if (!strcmp(val, "icmpv6"))
 534         {
 535                 val = "ipv6-icmp";
 536         }
 537         else if (!strcmp(val, "tcpudp"))
 538         {
 539                 proto.protocol = 6;
 540                 if (put_value(ptr, &proto, sizeof(proto), is_list))
 541                 {
 542                         proto.protocol = 17;
 543                         put_value(ptr, &proto, sizeof(proto), is_list);
 544                 }
 545
 546                 return true;
 547         }
 548
 549         ent = getprotobyname(val);
 550
 551         if (ent)
 552         {
 553                 proto.protocol = ent->p_proto;
 554                 put_value(ptr, &proto, sizeof(proto), is_list);
 555                 return true;
 556         }
 557
 558         proto.protocol = strtoul(val, NULL, 10);
 559
 560         if (errno == ERANGE || errno == EINVAL)
 561                 return false;
 562
 563         put_value(ptr, &proto, sizeof(proto), is_list);
 564         return true;
 565 }
 566
 567 bool
 568 fw3_parse_ipset_method(void *ptr, const char *val, bool is_list)
 569 {
 570         return parse_enum(ptr, val, &fw3_ipset_method_names[FW3_IPSET_METHOD_BITMAP],
 571                           FW3_IPSET_METHOD_BITMAP, FW3_IPSET_METHOD_LIST);
 572 }
 573
 574 bool
 575 fw3_parse_ipset_datatype(void *ptr, const char *val, bool is_list)
 576 {
 577         struct fw3_ipset_datatype type = { };
 578
 579         if (!strncmp(val, "dest_", 5))
 580         {
 581                 val += 5;
 582                 type.dest = true;
 583         }
 584         else if (!strncmp(val, "dst_", 4))
 585         {
 586                 val += 4;
 587                 type.dest = true;
 588         }
 589         else if (!strncmp(val, "src_", 4))
 590         {
 591                 val += 4;
 592                 type.dest = false;
 593         }
 594
 595         if (parse_enum(&type.type, val, &fw3_ipset_type_names[FW3_IPSET_TYPE_IP],
 596                        FW3_IPSET_TYPE_IP, FW3_IPSET_TYPE_SET))
 597         {
 598                 put_value(ptr, &type, sizeof(type), is_list);
 599                 return true;
 600         }
 601
 602         return false;
 603 }
 604
 605 bool
 606 fw3_parse_date(void *ptr, const char *val, bool is_list)
 607 {
 608         unsigned int year = 1970, mon = 1, day = 1, hour = 0, min = 0, sec = 0;
 609         struct tm tm = { 0 };
 610         char *p;
 611
 612         year = strtoul(val, &p, 10);
 613         if ((*p != '-' && *p) || year < 1970 || year > 2038)
 614                 goto fail;
 615         else if (!*p)
 616                 goto ret;
 617
 618         mon = strtoul(++p, &p, 10);
 619         if ((*p != '-' && *p) || mon > 12)
 620                 goto fail;
 621         else if (!*p)
 622                 goto ret;
 623
 624         day = strtoul(++p, &p, 10);
 625         if ((*p != 'T' && *p) || day > 31)
 626                 goto fail;
 627         else if (!*p)
 628                 goto ret;
 629
 630         hour = strtoul(++p, &p, 10);
 631         if ((*p != ':' && *p) || hour > 23)
 632                 goto fail;
 633         else if (!*p)
 634                 goto ret;
 635
 636         min = strtoul(++p, &p, 10);
 637         if ((*p != ':' && *p) || min > 59)
 638                 goto fail;
 639         else if (!*p)
 640                 goto ret;
 641
 642         sec = strtoul(++p, &p, 10);
 643         if (*p || sec > 59)
 644                 goto fail;
 645
 646 ret:
 647         tm.tm_year = year - 1900;
 648         tm.tm_mon  = mon - 1;
 649         tm.tm_mday = day;
 650         tm.tm_hour = hour;
 651         tm.tm_min  = min;
 652         tm.tm_sec  = sec;
 653
 654         if (mktime(&tm) >= 0)
 655         {
 656                 *((struct tm *)ptr) = tm;
 657                 return true;
 658         }
 659
 660 fail:
 661         return false;
 662 }
 663
 664 bool
 665 fw3_parse_time(void *ptr, const char *val, bool is_list)
 666 {
 667         unsigned int hour = 0, min = 0, sec = 0;
 668         char *p;
 669
 670         hour = strtoul(val, &p, 10);
 671         if (*p != ':' || hour > 23)
 672                 goto fail;
 673
 674         min = strtoul(++p, &p, 10);
 675         if ((*p != ':' && *p) || min > 59)
 676                 goto fail;
 677         else if (!*p)
 678                 goto ret;
 679
 680         sec = strtoul(++p, &p, 10);
 681         if (*p || sec > 59)
 682                 goto fail;
 683
 684 ret:
 685         *((int *)ptr) = 60 * 60 * hour + 60 * min + sec;
 686         return true;
 687
 688 fail:
 689         return false;
 690 }
 691
 692 bool
 693 fw3_parse_weekdays(void *ptr, const char *val, bool is_list)
 694 {
 695         unsigned int w = 0;
 696         char *p, *s;
 697
 698         if (*val == '!')
 699         {
 700                 setbit(*(uint8_t *)ptr, 0);
 701                 while (isspace(*++val));
 702         }
 703
 704         if (!(s = strdup(val)))
 705                 return false;
 706
 707         for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
 708         {
 709                 if (!parse_enum(&w, p, weekdays, 1, 7))
 710                 {
 711                         w = strtoul(p, &p, 10);
 712
 713                         if (*p || w < 1 || w > 7)
 714                         {
 715                                 free(s);
 716                                 return false;
 717                         }
 718                 }
 719
 720                 setbit(*(uint8_t *)ptr, w);
 721         }
 722
 723         free(s);
 724         return true;
 725 }
 726
 727 bool
 728 fw3_parse_monthdays(void *ptr, const char *val, bool is_list)
 729 {
 730         unsigned int d;
 731         char *p, *s;
 732
 733         if (*val == '!')
 734         {
 735                 setbit(*(uint32_t *)ptr, 0);
 736                 while (isspace(*++val));
 737         }
 738
 739         if (!(s = strdup(val)))
 740                 return false;
 741
 742         for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
 743         {
 744                 d = strtoul(p, &p, 10);
 745
 746                 if (*p || d < 1 || d > 31)
 747                 {
 748                         free(s);
 749                         return false;
 750                 }
 751
 752                 setbit(*(uint32_t *)ptr, d);
 753         }
 754
 755         free(s);
 756         return true;
 757 }
 758
 759 bool
 760 fw3_parse_include_type(void *ptr, const char *val, bool is_list)
 761 {
 762         return parse_enum(ptr, val, include_types,
 763                           FW3_INC_TYPE_SCRIPT, FW3_INC_TYPE_RESTORE);
 764 }
 765
 766 bool
 767 fw3_parse_reflection_source(void *ptr, const char *val, bool is_list)
 768 {
 769         return parse_enum(ptr, val, reflection_sources,
 770                           FW3_REFLECTION_INTERNAL, FW3_REFLECTION_EXTERNAL);
 771 }
 772
 773 bool
 774 fw3_parse_mark(void *ptr, const char *val, bool is_list)
 775 {
 776         uint32_t n;
 777         char *s, *e;
 778         struct fw3_mark *m = ptr;
 779
 780         if (*val == '!')
 781         {
 782                 m->invert = true;
 783                 while (isspace(*++val));
 784         }
 785
 786         if ((s = strchr(val, '/')) != NULL)
 787                 *s++ = 0;
 788
 789         n = strtoul(val, &e, 0);
 790
 791         if (e == val || *e)
 792                 return false;
 793
 794         m->mark = n;
 795         m->mask = 0xFFFFFFFF;
 796
 797         if (s)
 798         {
 799                 n = strtoul(s, &e, 0);
 800
 801                 if (e == s || *e)
 802                         return false;
 803
 804                 m->mask = n;
 805         }
 806
 807         m->set = true;
 808         return true;
 809 }
 810
 811
 812 void
 813 fw3_parse_options(void *s, const struct fw3_option *opts,
 814                   struct uci_section *section)
 815 {
 816         char *p, *v;
 817         bool known;
 818         struct uci_element *e, *l;
 819         struct uci_option *o;
 820         const struct fw3_option *opt;
 821         struct list_head *dest;
 822
 823         uci_foreach_element(&section->options, e)
 824         {
 825                 o = uci_to_option(e);
 826                 known = false;
 827
 828                 for (opt = opts; opt->name; opt++)
 829                 {
 830                         if (!opt->parse)
 831                                 continue;
 832
 833                         if (strcmp(opt->name, e->name))
 834                                 continue;
 835
 836                         if (o->type == UCI_TYPE_LIST)
 837                         {
 838                                 if (!opt->elem_size)
 839                                 {
 840                                         warn_elem(e, "must not be a list");
 841                                 }
 842                                 else
 843                                 {
 844                                         dest = (struct list_head *)((char *)s + opt->offset);
 845
 846                                         uci_foreach_element(&o->v.list, l)
 847                                         {
 848                                                 if (!l->name)
 849                                                         continue;
 850
 851                                                 if (!opt->parse(dest, l->name, true))
 852                                                 {
 853                                                         warn_elem(e, "has invalid value '%s'", l->name);
 854                                                         continue;
 855                                                 }
 856                                         }
 857                                 }
 858                         }
 859                         else
 860                         {
 861                                 v = o->v.string;
 862
 863                                 if (!v)
 864                                         continue;
 865
 866                                 if (!opt->elem_size)
 867                                 {
 868                                         if (!opt->parse((char *)s + opt->offset, o->v.string, false))
 869                                                 warn_elem(e, "has invalid value '%s'", o->v.string);
 870                                 }
 871                                 else
 872                                 {
 873                                         dest = (struct list_head *)((char *)s + opt->offset);
 874
 875                                         for (p = strtok(v, " \t"); p != NULL; p = strtok(NULL, " \t"))
 876                                         {
 877                                                 if (!opt->parse(dest, p, true))
 878                                                 {
 879                                                         warn_elem(e, "has invalid value '%s'", p);
 880                                                         continue;
 881                                                 }
 882                                         }
 883                                 }
 884                         }
 885
 886                         known = true;
 887                         break;
 888                 }
 889
 890                 if (!known)
 891                         warn_elem(e, "is unknown");
 892         }
 893 }
 894
 895
 896 const char *
 897 fw3_address_to_string(struct fw3_address *address, bool allow_invert)
 898 {
 899         char *p, ip[INET6_ADDRSTRLEN];
 900         static char buf[INET6_ADDRSTRLEN * 2 + 2];
 901
 902         p = buf;
 903
 904         if (address->invert && allow_invert)
 905                 p += sprintf(p, "!");
 906
 907         inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
 908                   &address->address.v4, ip, sizeof(ip));
 909
 910         p += sprintf(p, "%s", ip);
 911
 912         if (address->range)
 913         {
 914                 inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
 915                           &address->address2.v4, ip, sizeof(ip));
 916
 917                 p += sprintf(p, "-%s", ip);
 918         }
 919         else
 920         {
 921                 p += sprintf(p, "/%u", address->mask);
 922         }
 923
 924         return buf;
 925 }