Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 1 | /* Shared library add-on to iptables to add recent matching support. */ |
Jan Engelhardt | 32b8e61 | 2010-07-23 21:16:14 +0200 | [diff] [blame] | 2 | #include <stdbool.h> |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 3 | #include <stdio.h> |
| 4 | #include <netdb.h> |
| 5 | #include <string.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <getopt.h> |
| 8 | |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 9 | #include <xtables.h> |
| 10 | #include <linux/netfilter/xt_recent.h> |
Harald Welte | 122e7c0 | 2003-03-30 20:26:42 +0000 | [diff] [blame] | 11 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 12 | static const struct option recent_opts[] = { |
Jan Engelhardt | 32b8e61 | 2010-07-23 21:16:14 +0200 | [diff] [blame] | 13 | {.name = "set", .has_arg = false, .val = 201}, |
| 14 | {.name = "rcheck", .has_arg = false, .val = 202}, |
| 15 | {.name = "update", .has_arg = false, .val = 203}, |
| 16 | {.name = "seconds", .has_arg = true, .val = 204}, |
| 17 | {.name = "hitcount", .has_arg = true, .val = 205}, |
| 18 | {.name = "remove", .has_arg = false, .val = 206}, |
| 19 | {.name = "rttl", .has_arg = false, .val = 207}, |
| 20 | {.name = "name", .has_arg = true, .val = 208}, |
| 21 | {.name = "rsource", .has_arg = false, .val = 209}, |
| 22 | {.name = "rdest", .has_arg = false, .val = 210}, |
| 23 | XT_GETOPT_TABLEEND, |
Stephen Frost | 27e1fa8 | 2003-04-14 13:33:15 +0000 | [diff] [blame] | 24 | }; |
| 25 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 26 | static void recent_help(void) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 27 | { |
| 28 | printf( |
Jan Engelhardt | 8b7c64d | 2008-04-15 11:48:25 +0200 | [diff] [blame] | 29 | "recent match options:\n" |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 30 | "[!] --set Add source address to list, always matches.\n" |
| 31 | "[!] --rcheck Match if source address in list.\n" |
| 32 | "[!] --update Match if source address in list, also update last-seen time.\n" |
| 33 | "[!] --remove Match if source address in list, also removes that address from list.\n" |
| 34 | " --seconds seconds For check and update commands above.\n" |
| 35 | " Specifies that the match will only occur if source address last seen within\n" |
| 36 | " the last 'seconds' seconds.\n" |
| 37 | " --hitcount hits For check and update commands above.\n" |
| 38 | " Specifies that the match will only occur if source address seen hits times.\n" |
Fabrice MARIE | ae31bb6 | 2002-06-14 07:38:16 +0000 | [diff] [blame] | 39 | " May be used in conjunction with the seconds option.\n" |
Stephen Frost | 4fce44c | 2002-02-04 11:58:22 +0000 | [diff] [blame] | 40 | " --rttl For check and update commands above.\n" |
| 41 | " Specifies that the match will only occur if the source address and the TTL\n" |
| 42 | " match between this packet and the one which was set.\n" |
| 43 | " Useful if you have problems with people spoofing their source address in order\n" |
| 44 | " to DoS you via this module.\n" |
Stephen Frost | 7fdbc95 | 2002-06-21 17:26:33 +0000 | [diff] [blame] | 45 | " --name name Name of the recent list to be used. DEFAULT used if none given.\n" |
Stephen Frost | 27e1fa8 | 2003-04-14 13:33:15 +0000 | [diff] [blame] | 46 | " --rsource Match/Save the source address of each packet in the recent list table (default).\n" |
| 47 | " --rdest Match/Save the destination address of each packet in the recent list table.\n" |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 48 | "xt_recent by: Stephen Frost <sfrost@snowman.net>. http://snowman.net/projects/ipt_recent/\n"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 49 | } |
Jan Engelhardt | ddac6c5 | 2008-09-01 14:22:19 +0200 | [diff] [blame] | 50 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 51 | static void recent_init(struct xt_entry_match *match) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 52 | { |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 53 | struct xt_recent_mtinfo *info = (void *)(match)->data; |
Stephen Frost | 7fdbc95 | 2002-06-21 17:26:33 +0000 | [diff] [blame] | 54 | |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 55 | strncpy(info->name,"DEFAULT", XT_RECENT_NAME_LEN); |
| 56 | /* even though XT_RECENT_NAME_LEN is currently defined as 200, |
Karsten Desler | 073df8f | 2004-01-31 15:33:55 +0000 | [diff] [blame] | 57 | * better be safe, than sorry */ |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 58 | info->name[XT_RECENT_NAME_LEN-1] = '\0'; |
| 59 | info->side = XT_RECENT_SOURCE; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 60 | } |
| 61 | |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 62 | #define RECENT_CMDS \ |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 63 | (XT_RECENT_SET | XT_RECENT_CHECK | \ |
| 64 | XT_RECENT_UPDATE | XT_RECENT_REMOVE) |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 65 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 66 | static int recent_parse(int c, char **argv, int invert, unsigned int *flags, |
| 67 | const void *entry, struct xt_entry_match **match) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 68 | { |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 69 | struct xt_recent_mtinfo *info = (void *)(*match)->data; |
| 70 | |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 71 | switch (c) { |
| 72 | case 201: |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 73 | if (*flags & RECENT_CMDS) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 74 | xtables_error(PARAMETER_PROBLEM, |
Stephen Frost | d590395 | 2003-03-03 07:24:27 +0000 | [diff] [blame] | 75 | "recent: only one of `--set', `--rcheck' " |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 76 | "`--update' or `--remove' may be set"); |
Jan Engelhardt | bf97128 | 2009-11-03 19:55:11 +0100 | [diff] [blame] | 77 | xtables_check_inverse(optarg, &invert, &optind, 0, argv); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 78 | info->check_set |= XT_RECENT_SET; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 79 | if (invert) info->invert = 1; |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 80 | *flags |= XT_RECENT_SET; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 81 | break; |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 82 | |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 83 | case 202: |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 84 | if (*flags & RECENT_CMDS) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 85 | xtables_error(PARAMETER_PROBLEM, |
Stephen Frost | d590395 | 2003-03-03 07:24:27 +0000 | [diff] [blame] | 86 | "recent: only one of `--set', `--rcheck' " |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 87 | "`--update' or `--remove' may be set"); |
Jan Engelhardt | bf97128 | 2009-11-03 19:55:11 +0100 | [diff] [blame] | 88 | xtables_check_inverse(optarg, &invert, &optind, 0, argv); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 89 | info->check_set |= XT_RECENT_CHECK; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 90 | if(invert) info->invert = 1; |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 91 | *flags |= XT_RECENT_CHECK; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 92 | break; |
| 93 | |
| 94 | case 203: |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 95 | if (*flags & RECENT_CMDS) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 96 | xtables_error(PARAMETER_PROBLEM, |
Stephen Frost | d590395 | 2003-03-03 07:24:27 +0000 | [diff] [blame] | 97 | "recent: only one of `--set', `--rcheck' " |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 98 | "`--update' or `--remove' may be set"); |
Jan Engelhardt | bf97128 | 2009-11-03 19:55:11 +0100 | [diff] [blame] | 99 | xtables_check_inverse(optarg, &invert, &optind, 0, argv); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 100 | info->check_set |= XT_RECENT_UPDATE; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 101 | if (invert) info->invert = 1; |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 102 | *flags |= XT_RECENT_UPDATE; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 103 | break; |
| 104 | |
Jan Engelhardt | 6ce22ff | 2010-01-19 18:13:23 +0100 | [diff] [blame] | 105 | case 204: |
| 106 | info->seconds = atoi(optarg); |
| 107 | break; |
| 108 | |
| 109 | case 205: |
| 110 | info->hit_count = atoi(optarg); |
| 111 | break; |
| 112 | |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 113 | case 206: |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 114 | if (*flags & RECENT_CMDS) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 115 | xtables_error(PARAMETER_PROBLEM, |
Stephen Frost | d590395 | 2003-03-03 07:24:27 +0000 | [diff] [blame] | 116 | "recent: only one of `--set', `--rcheck' " |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 117 | "`--update' or `--remove' may be set"); |
Jan Engelhardt | bf97128 | 2009-11-03 19:55:11 +0100 | [diff] [blame] | 118 | xtables_check_inverse(optarg, &invert, &optind, 0, argv); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 119 | info->check_set |= XT_RECENT_REMOVE; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 120 | if (invert) info->invert = 1; |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 121 | *flags |= XT_RECENT_REMOVE; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 122 | break; |
| 123 | |
Stephen Frost | 4fce44c | 2002-02-04 11:58:22 +0000 | [diff] [blame] | 124 | case 207: |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 125 | info->check_set |= XT_RECENT_TTL; |
| 126 | *flags |= XT_RECENT_TTL; |
Stephen Frost | 4fce44c | 2002-02-04 11:58:22 +0000 | [diff] [blame] | 127 | break; |
| 128 | |
| 129 | case 208: |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 130 | strncpy(info->name,optarg, XT_RECENT_NAME_LEN); |
| 131 | info->name[XT_RECENT_NAME_LEN-1] = '\0'; |
Stephen Frost | 4fce44c | 2002-02-04 11:58:22 +0000 | [diff] [blame] | 132 | break; |
| 133 | |
Stephen Frost | 7fdbc95 | 2002-06-21 17:26:33 +0000 | [diff] [blame] | 134 | case 209: |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 135 | info->side = XT_RECENT_SOURCE; |
Stephen Frost | 7fdbc95 | 2002-06-21 17:26:33 +0000 | [diff] [blame] | 136 | break; |
| 137 | |
| 138 | case 210: |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 139 | info->side = XT_RECENT_DEST; |
Stephen Frost | 7fdbc95 | 2002-06-21 17:26:33 +0000 | [diff] [blame] | 140 | break; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 141 | } |
Stephen Frost | 4fce44c | 2002-02-04 11:58:22 +0000 | [diff] [blame] | 142 | |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 143 | return 1; |
| 144 | } |
| 145 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 146 | static void recent_check(unsigned int flags) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 147 | { |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 148 | if (!(flags & RECENT_CMDS)) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 149 | xtables_error(PARAMETER_PROBLEM, |
Stephen Frost | d590395 | 2003-03-03 07:24:27 +0000 | [diff] [blame] | 150 | "recent: you must specify one of `--set', `--rcheck' " |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 151 | "`--update' or `--remove'"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 152 | if ((flags & XT_RECENT_TTL) && |
| 153 | (flags & (XT_RECENT_SET | XT_RECENT_REMOVE))) |
Jan Engelhardt | 1829ed4 | 2009-02-21 03:29:44 +0100 | [diff] [blame] | 154 | xtables_error(PARAMETER_PROBLEM, |
Jan Engelhardt | 3c5d15c | 2008-08-04 12:52:27 +0200 | [diff] [blame] | 155 | "recent: --rttl may only be used with --rcheck or " |
| 156 | "--update"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 157 | } |
| 158 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 159 | static void recent_print(const void *ip, const struct xt_entry_match *match, |
| 160 | int numeric) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 161 | { |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 162 | const struct xt_recent_mtinfo *info = (const void *)match->data; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 163 | |
Sven Strickroth | 0c1b776 | 2003-06-01 10:11:43 +0000 | [diff] [blame] | 164 | if (info->invert) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 165 | printf(" !"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 166 | |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 167 | printf(" recent:"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 168 | if (info->check_set & XT_RECENT_SET) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 169 | printf(" SET"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 170 | if (info->check_set & XT_RECENT_CHECK) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 171 | printf(" CHECK"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 172 | if (info->check_set & XT_RECENT_UPDATE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 173 | printf(" UPDATE"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 174 | if (info->check_set & XT_RECENT_REMOVE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 175 | printf(" REMOVE"); |
| 176 | if(info->seconds) printf(" seconds: %d", info->seconds); |
| 177 | if(info->hit_count) printf(" hit_count: %d", info->hit_count); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 178 | if (info->check_set & XT_RECENT_TTL) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 179 | printf(" TTL-Match"); |
| 180 | if(info->name) printf(" name: %s", info->name); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 181 | if (info->side == XT_RECENT_SOURCE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 182 | printf(" side: source"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 183 | if (info->side == XT_RECENT_DEST) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 184 | printf(" side: dest"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 185 | } |
| 186 | |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 187 | static void recent_save(const void *ip, const struct xt_entry_match *match) |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 188 | { |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 189 | const struct xt_recent_mtinfo *info = (const void *)match->data; |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 190 | |
Sven Strickroth | 0c1b776 | 2003-06-01 10:11:43 +0000 | [diff] [blame] | 191 | if (info->invert) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 192 | printf(" !"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 193 | |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 194 | if (info->check_set & XT_RECENT_SET) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 195 | printf(" --set"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 196 | if (info->check_set & XT_RECENT_CHECK) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 197 | printf(" --rcheck"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 198 | if (info->check_set & XT_RECENT_UPDATE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 199 | printf(" --update"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 200 | if (info->check_set & XT_RECENT_REMOVE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 201 | printf(" --remove"); |
| 202 | if(info->seconds) printf(" --seconds %d", info->seconds); |
| 203 | if(info->hit_count) printf(" --hitcount %d", info->hit_count); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 204 | if (info->check_set & XT_RECENT_TTL) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 205 | printf(" --rttl"); |
| 206 | if(info->name) printf(" --name %s",info->name); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 207 | if (info->side == XT_RECENT_SOURCE) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 208 | printf(" --rsource"); |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 209 | if (info->side == XT_RECENT_DEST) |
Jan Engelhardt | 7386635 | 2010-12-18 02:04:59 +0100 | [diff] [blame^] | 210 | printf(" --rdest"); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 211 | } |
| 212 | |
Jan Engelhardt | 8b7c64d | 2008-04-15 11:48:25 +0200 | [diff] [blame] | 213 | static struct xtables_match recent_mt_reg = { |
Stephen Frost | 27e1fa8 | 2003-04-14 13:33:15 +0000 | [diff] [blame] | 214 | .name = "recent", |
Jan Engelhardt | 8b7c64d | 2008-04-15 11:48:25 +0200 | [diff] [blame] | 215 | .version = XTABLES_VERSION, |
Jan Engelhardt | c5e8573 | 2009-06-12 20:55:44 +0200 | [diff] [blame] | 216 | .family = NFPROTO_UNSPEC, |
Jan Engelhardt | af1660f | 2008-10-22 18:53:39 +0200 | [diff] [blame] | 217 | .size = XT_ALIGN(sizeof(struct xt_recent_mtinfo)), |
| 218 | .userspacesize = XT_ALIGN(sizeof(struct xt_recent_mtinfo)), |
Jan Engelhardt | 59d1640 | 2007-10-04 16:28:39 +0000 | [diff] [blame] | 219 | .help = recent_help, |
| 220 | .init = recent_init, |
| 221 | .parse = recent_parse, |
| 222 | .final_check = recent_check, |
| 223 | .print = recent_print, |
| 224 | .save = recent_save, |
| 225 | .extra_opts = recent_opts, |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 226 | }; |
| 227 | |
| 228 | void _init(void) |
| 229 | { |
Jan Engelhardt | 8b7c64d | 2008-04-15 11:48:25 +0200 | [diff] [blame] | 230 | xtables_register_match(&recent_mt_reg); |
Stephen Frost | 93c7e5a | 2001-11-08 22:35:03 +0000 | [diff] [blame] | 231 | } |