libip6t_dst.c revision 73866357e4a7a0fdc1b293bf8863fee2bd56da9e
15b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov/* Shared library add-on to ip6tables to add Dst header support. */ 25b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <stdbool.h> 35b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <stdio.h> 45b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <netdb.h> 55b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <string.h> 65b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <stdlib.h> 75b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <getopt.h> 85b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <errno.h> 95b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <xtables.h> 105b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <linux/netfilter_ipv6/ip6t_opts.h> 115b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <sys/types.h> 125b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <sys/socket.h> 135b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov#include <arpa/inet.h> 145b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 155b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovstatic void dst_help(void) 165b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov{ 175b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov printf( 185b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov"dst match options:\n" 195b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov"[!] --dst-len length total length of this header\n" 205b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov" --dst-opts TYPE[:LEN][,TYPE[:LEN]...]\n" 215b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov" Options and its length (list, max: %d)\n", 22216719b23134b9719bbf3e1de4a7d5d351c21fa8Alexey SamsonovIP6T_OPTS_OPTSNR); 236afa1b0406f5cce7256d4f8717bfe394a16999b5Kostya Serebryany} 246afa1b0406f5cce7256d4f8717bfe394a16999b5Kostya Serebryany 256afa1b0406f5cce7256d4f8717bfe394a16999b5Kostya Serebryanystatic const struct option dst_opts[] = { 266fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany {.name = "dst-len", .has_arg = true, .val = '1'}, 276fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany {.name = "dst-opts", .has_arg = true, .val = '2'}, 286fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany {.name = "dst-not-strict", .has_arg = true, .val = '3'}, 296fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany XT_GETOPT_TABLEEND, 306fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany}; 316fb47af2d2d305adbfc3d41bea589d1527a364a9Kostya Serebryany 326afa1b0406f5cce7256d4f8717bfe394a16999b5Kostya Serebryanystatic uint32_t 335b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovparse_opts_num(const char *idstr, const char *typestr) 345b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov{ 355b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov unsigned long int id; 365b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov char* ep; 375b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 386a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko id = strtoul(idstr, &ep, 0); 396a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 405b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov if ( idstr == ep ) { 415b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov xtables_error(PARAMETER_PROBLEM, 425b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov "dst: no valid digits in %s `%s'", typestr, idstr); 435b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov } 445b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov if ( id == ULONG_MAX && errno == ERANGE ) { 455b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov xtables_error(PARAMETER_PROBLEM, 46b4fefa713da3dabda1cd83ae4182c71f1683f02cAlexey Samsonov "%s `%s' specified too big: would overflow", 475b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov typestr, idstr); 485b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov } 495b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov if ( *idstr != '\0' && *ep != '\0' ) { 50b4fefa713da3dabda1cd83ae4182c71f1683f02cAlexey Samsonov xtables_error(PARAMETER_PROBLEM, 515b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov "dst: error parsing %s `%s'", typestr, idstr); 525b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov } 5350a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko return id; 54b4fefa713da3dabda1cd83ae4182c71f1683f02cAlexey Samsonov} 5550a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 565b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovstatic int 575b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovparse_options(const char *optsstr, uint16_t *opts) 58b4fefa713da3dabda1cd83ae4182c71f1683f02cAlexey Samsonov{ 595b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov char *buffer, *cp, *next, *range; 6050a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko unsigned int i; 615b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 626a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko buffer = strdup(optsstr); 636a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko if (!buffer) 646a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko xtables_error(OTHER_PROBLEM, "strdup failed"); 656a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 666a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko for (cp = buffer, i = 0; cp && i < IP6T_OPTS_OPTSNR; cp = next, i++) 675b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov { 685b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov next = strchr(cp, ','); 69580469d7e40e39319cb2d3750edac4bccca18105Dmitry Vyukov 705b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov if (next) 71580469d7e40e39319cb2d3750edac4bccca18105Dmitry Vyukov *next++='\0'; 72580469d7e40e39319cb2d3750edac4bccca18105Dmitry Vyukov 73f54c0e3321e2381fca3f02faefaaa6639d59c7cfDmitry Vyukov range = strchr(cp, ':'); 74f54c0e3321e2381fca3f02faefaaa6639d59c7cfDmitry Vyukov 75580469d7e40e39319cb2d3750edac4bccca18105Dmitry Vyukov if (range) { 7650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko if (i == IP6T_OPTS_OPTSNR-1) 77580469d7e40e39319cb2d3750edac4bccca18105Dmitry Vyukov xtables_error(PARAMETER_PROBLEM, 785b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov "too many ports specified"); 795b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov *range++ = '\0'; 8069563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko } 8169563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko 8269563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko opts[i] = (parse_opts_num(cp, "opt") & 0xFF) << 8; 8369563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko if (range) { 8469563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko if (opts[i] == 0) 8569563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko xtables_error(PARAMETER_PROBLEM, 8650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko "PAD0 hasn't got length"); 8750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko opts[i] |= parse_opts_num(range, "length") & 0xFF; 885b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov } else 895b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov opts[i] |= (0x00FF); 906a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 9150a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko#ifdef DEBUG 9250a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf("opts str: %s %s\n", cp, range); 9350a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf("opts opt: %04X\n", opts[i]); 9450a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko#endif 9550a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko } 9650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 9750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko if (cp) 9850a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko xtables_error(PARAMETER_PROBLEM, "too many addresses specified"); 9950a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 10050a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko free(buffer); 10150a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 10250a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko#ifdef DEBUG 10350a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf("addr nr: %d\n", i); 10450a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko#endif 10550a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 10650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko return i; 10750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko} 10850a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 10950a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenkostatic void dst_init(struct xt_entry_match *m) 11050a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko{ 11150a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko struct ip6t_opts *optinfo = (struct ip6t_opts *)m->data; 11250a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 11350a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko optinfo->hdrlen = 0; 11450a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko optinfo->flags = 0; 11550a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko optinfo->invflags = 0; 11650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko optinfo->optsnr = 0; 11750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko} 1185b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 1195b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovstatic int dst_parse(int c, char **argv, int invert, unsigned int *flags, 1205b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov const void *entry, struct xt_entry_match **match) 121b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov{ 12250a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko struct ip6t_opts *optinfo = (struct ip6t_opts *)(*match)->data; 1235b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 1242716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov switch (c) { 1252716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov case '1': 1262716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov if (*flags & IP6T_OPTS_LEN) 1272716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov xtables_error(PARAMETER_PROBLEM, 1282716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov "Only one `--dst-len' allowed"); 1292716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov xtables_check_inverse(optarg, &invert, &optind, 0, argv); 1302716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov optinfo->hdrlen = parse_opts_num(optarg, "length"); 1312716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov if (invert) 1322716a61d085a8fdf13a099822720e320414cc4dcTimur Iskhodzhanov optinfo->invflags |= IP6T_OPTS_INV_LEN; 1339213e07a7f95b3e634b97a7bba70849badcf2c8aTimur Iskhodzhanov optinfo->flags |= IP6T_OPTS_LEN; 1349213e07a7f95b3e634b97a7bba70849badcf2c8aTimur Iskhodzhanov *flags |= IP6T_OPTS_LEN; 1359213e07a7f95b3e634b97a7bba70849badcf2c8aTimur Iskhodzhanov break; 1369213e07a7f95b3e634b97a7bba70849badcf2c8aTimur Iskhodzhanov case '2': 1375b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov if (*flags & IP6T_OPTS_OPTS) 138f54c0e3321e2381fca3f02faefaaa6639d59c7cfDmitry Vyukov xtables_error(PARAMETER_PROBLEM, 139f54c0e3321e2381fca3f02faefaaa6639d59c7cfDmitry Vyukov "Only one `--dst-opts' allowed"); 1405b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov xtables_check_inverse(optarg, &invert, &optind, 0, argv); 141b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov if (invert) 142b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov xtables_error(PARAMETER_PROBLEM, 143ba362a7f0e98b369758f07aec8794c61e688b82dAlexey Samsonov " '!' not allowed with `--dst-opts'"); 1445b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov optinfo->optsnr = parse_options(optarg, optinfo->opts); 1455b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov optinfo->flags |= IP6T_OPTS_OPTS; 14669563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko *flags |= IP6T_OPTS_OPTS; 1470ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko break; 1480ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko case '3': 1490ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko if (*flags & IP6T_OPTS_NSTRICT) 1500ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko xtables_error(PARAMETER_PROBLEM, 1510ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko "Only one `--dst-not-strict' allowed"); 1520ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko if ( !(*flags & IP6T_OPTS_OPTS) ) 1530ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko xtables_error(PARAMETER_PROBLEM, 1540ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko "`--dst-opts ...' required before " 1550ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko "`--dst-not-strict'"); 15669563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko optinfo->flags |= IP6T_OPTS_NSTRICT; 1570ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko *flags |= IP6T_OPTS_NSTRICT; 1580ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko break; 1590ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko } 16069563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko 1615b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov return 1; 1626bae39d1db13f60d3e9b8393e5b9d9eb2ab1b5c0Chandler Carruth} 163c27279a4a08e0661f204c3e5dc65aafce79dec8aAlexey Samsonov 1645b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovstatic void 1655b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovprint_options(unsigned int optsnr, uint16_t *optsp) 166b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov{ 167b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov unsigned int i; 168b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov 169b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov printf(" "); 17069563986ca570ce750111a82264d51ddbf4107baAlexander Potapenko for(i = 0; i < optsnr; i++) { 171b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov printf("%d", (optsp[i] & 0xFF00) >> 8); 172b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov 1730ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko if ((optsp[i] & 0x00FF) != 0x00FF) 1740ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko printf(":%d", (optsp[i] & 0x00FF)); 1750ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko 1760ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko printf("%c", (i != optsnr - 1) ? ',' : ' '); 177b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov } 1780ef531054fc25c11e372cbab1384f10954984219Alexander Potapenko} 179600972e3427173cc8904d741decd1af0ed5de9fdTimur Iskhodzhanov 18050a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenkostatic void dst_print(const void *ip, const struct xt_entry_match *match, 181b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov int numeric) 182b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov{ 183b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov const struct ip6t_opts *optinfo = (struct ip6t_opts *)match->data; 1845b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 1855b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov printf(" dst"); 186b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov if (optinfo->flags & IP6T_OPTS_LEN) 1876a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko printf(" length:%s%u", 1886a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko optinfo->invflags & IP6T_OPTS_INV_LEN ? "!" : "", 1896a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko optinfo->hdrlen); 1906a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 1916a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko if (optinfo->flags & IP6T_OPTS_OPTS) 19250a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf(" opts"); 1936a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 1946a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko print_options(optinfo->optsnr, (uint16_t *)optinfo->opts); 1956a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 19650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko if (optinfo->flags & IP6T_OPTS_NSTRICT) 19750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf(" not-strict"); 19850a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 19950a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko if (optinfo->invflags & ~IP6T_OPTS_INV_MASK) 2006a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko printf(" Unknown invflags: 0x%X", 2016a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko optinfo->invflags & ~IP6T_OPTS_INV_MASK); 2026a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko} 2036a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko 2046a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenkostatic void dst_save(const void *ip, const struct xt_entry_match *match) 2056a659dfd8e717a598f54867aa36c2e4af09d031bAlexander Potapenko{ 20650a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko const struct ip6t_opts *optinfo = (struct ip6t_opts *)match->data; 20750a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko 20850a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko if (optinfo->flags & IP6T_OPTS_LEN) { 20950a002ecad3f0a10c136496e5b6289bd3c71590eAlexander Potapenko printf("%s --dst-len %u", 210600972e3427173cc8904d741decd1af0ed5de9fdTimur Iskhodzhanov (optinfo->invflags & IP6T_OPTS_INV_LEN) ? " !" : "", 211600972e3427173cc8904d741decd1af0ed5de9fdTimur Iskhodzhanov optinfo->hdrlen); 212600972e3427173cc8904d741decd1af0ed5de9fdTimur Iskhodzhanov } 213b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov 214b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov if (optinfo->flags & IP6T_OPTS_OPTS) 215b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov printf(" --dst-opts"); 216b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov 2179213e07a7f95b3e634b97a7bba70849badcf2c8aTimur Iskhodzhanov print_options(optinfo->optsnr, (uint16_t *)optinfo->opts); 218b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov 219b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov if (optinfo->flags & IP6T_OPTS_NSTRICT) 220b66bfd1e28776f0a350b9c197926c2c172678603Alexey Samsonov printf(" --dst-not-strict"); 221600972e3427173cc8904d741decd1af0ed5de9fdTimur Iskhodzhanov} 2225b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 223592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonovstatic struct xtables_match dst_mt6_reg = { 224592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .name = "dst", 225592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .version = XTABLES_VERSION, 226592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .family = NFPROTO_IPV6, 227592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .size = XT_ALIGN(sizeof(struct ip6t_opts)), 228592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .userspacesize = XT_ALIGN(sizeof(struct ip6t_opts)), 229b46941a1d23012491a7a8a52718cacbde3c19ba1Alexey Samsonov .help = dst_help, 230b46941a1d23012491a7a8a52718cacbde3c19ba1Alexey Samsonov .init = dst_init, 231b46941a1d23012491a7a8a52718cacbde3c19ba1Alexey Samsonov .parse = dst_parse, 232592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .print = dst_print, 233b46941a1d23012491a7a8a52718cacbde3c19ba1Alexey Samsonov .save = dst_save, 234592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov .extra_opts = dst_opts, 235592d3f707e02968c75fd6e90d06d24f5df99c8b9Alexey Samsonov}; 2365b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov 2375b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonovvoid 2385b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov_init(void) 2395b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov{ 2405b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov xtables_register_match(&dst_mt6_reg); 2415b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov} 2425b29018cf422e7711fb760b733c32127397a43fcAlexey Samsonov