+++ /dev/null
-/* Shared library add-on to iptables to add connmark matching support.
- *
- * (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
- * by Henrik Nordstrom <hno@marasystems.com>
- *
- * Version 1.1
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-
-#include <xtables.h>
-#include <linux/netfilter/xt_connmark.h>
-
-enum {
- F_MARK = 1 << 0,
-};
-
-static void connmark_mt_help(void)
-{
- printf(
-"connmark match options:\n"
-"[!] --mark value[/mask] Match ctmark value with optional mask\n");
-}
-
-static const struct option connmark_mt_opts[] = {
- {.name = "mark", .has_arg = true, .val = '1'},
- { .name = NULL }
-};
-
-static int
-connmark_mt_parse(int c, char **argv, int invert, unsigned int *flags,
- const void *entry, struct xt_entry_match **match)
-{
- struct xt_connmark_mtinfo1 *info = (void *)(*match)->data;
- unsigned int mark, mask = ~0U;
- char *end;
-
- switch (c) {
- case '1': /* --mark */
- param_act(P_ONLY_ONCE, "connmark", "--mark", *flags & F_MARK);
- if (!strtonum(optarg, &end, &mark, 0, ~0U))
- param_act(P_BAD_VALUE, "connmark", "--mark", optarg);
- if (*end == '/')
- if (!strtonum(end + 1, &end, &mask, 0, ~0U))
- param_act(P_BAD_VALUE, "connmark", "--mark", optarg);
- if (*end != '\0')
- param_act(P_BAD_VALUE, "connmark", "--mark", optarg);
-
- if (invert)
- info->invert = true;
- info->mark = mark;
- info->mask = mask;
- *flags |= F_MARK;
- return true;
- }
- return false;
-}
-
-/* Function which parses command options; returns true if it
- ate an option */
-static int
-connmark_parse(int c, char **argv, int invert, unsigned int *flags,
- const void *entry, struct xt_entry_match **match)
-{
- struct xt_connmark_info *markinfo = (struct xt_connmark_info *)(*match)->data;
-
- switch (c) {
- char *end;
- case '1':
- check_inverse(optarg, &invert, &optind, 0);
-
- markinfo->mark = strtoul(optarg, &end, 0);
- markinfo->mask = 0xffffffffUL;
-
- if (*end == '/')
- markinfo->mask = strtoul(end+1, &end, 0);
-
- if (*end != '\0' || end == optarg)
- exit_error(PARAMETER_PROBLEM, "Bad MARK value `%s'", optarg);
- if (invert)
- markinfo->invert = 1;
- *flags = 1;
- break;
-
- default:
- return 0;
- }
- return 1;
-}
-
-static void print_mark(unsigned int mark, unsigned int mask)
-{
- if (mask != 0xffffffffU)
- printf("0x%x/0x%x ", mark, mask);
- else
- printf("0x%x ", mark);
-}
-
-static void connmark_mt_check(unsigned int flags)
-{
- if (flags == 0)
- exit_error(PARAMETER_PROBLEM,
- "connmark: The --mark option is required");
-}
-
-/* Prints out the matchinfo. */
-static void
-connmark_print(const void *ip, const struct xt_entry_match *match, int numeric)
-{
- struct xt_connmark_info *info = (struct xt_connmark_info *)match->data;
-
- printf("CONNMARK match ");
- if (info->invert)
- printf("!");
- print_mark(info->mark, info->mask);
-}
-
-static void
-connmark_mt_print(const void *ip, const struct xt_entry_match *match, int numeric)
-{
- const struct xt_connmark_mtinfo1 *info = (const void *)match->data;
-
- printf("connmark match ");
- if (info->invert)
- printf("!");
- print_mark(info->mark, info->mask);
-}
-
-/* Saves the matchinfo in parsable form to stdout. */
-static void connmark_save(const void *ip, const struct xt_entry_match *match)
-{
- struct xt_connmark_info *info = (struct xt_connmark_info *)match->data;
-
- if (info->invert)
- printf("! ");
-
- printf("--mark ");
- print_mark(info->mark, info->mask);
-}
-
-static void
-connmark_mt_save(const void *ip, const struct xt_entry_match *match)
-{
- const struct xt_connmark_mtinfo1 *info = (const void *)match->data;
-
- if (info->invert)
- printf("! ");
-
- printf("--mark ");
- print_mark(info->mark, info->mask);
-}
-
-static struct xtables_match connmark_mt_reg_v0 = {
- .family = AF_INET,
- .name = "connmark",
- .revision = 0,
- .version = XTABLES_VERSION,
- .size = XT_ALIGN(sizeof(struct xt_connmark_info)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_connmark_info)),
- .help = connmark_mt_help,
- .parse = connmark_parse,
- .final_check = connmark_mt_check,
- .print = connmark_print,
- .save = connmark_save,
- .extra_opts = connmark_mt_opts,
-};
-
-static struct xtables_match connmark_mt6_reg_v0 = {
- .family = AF_INET6,
- .name = "connmark",
- .revision = 0,
- .version = XTABLES_VERSION,
- .size = XT_ALIGN(sizeof(struct xt_connmark_info)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_connmark_info)),
- .help = connmark_mt_help,
- .parse = connmark_parse,
- .final_check = connmark_mt_check,
- .print = connmark_print,
- .save = connmark_save,
- .extra_opts = connmark_mt_opts,
-};
-
-static struct xtables_match connmark_mt_reg = {
- .version = XTABLES_VERSION,
- .name = "connmark",
- .revision = 1,
- .family = AF_INET,
- .size = XT_ALIGN(sizeof(struct xt_connmark_mtinfo1)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_connmark_mtinfo1)),
- .help = connmark_mt_help,
- .parse = connmark_mt_parse,
- .final_check = connmark_mt_check,
- .print = connmark_mt_print,
- .save = connmark_mt_save,
- .extra_opts = connmark_mt_opts,
-};
-
-static struct xtables_match connmark_mt6_reg = {
- .version = XTABLES_VERSION,
- .name = "connmark",
- .revision = 1,
- .family = AF_INET6,
- .size = XT_ALIGN(sizeof(struct xt_connmark_mtinfo1)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_connmark_mtinfo1)),
- .help = connmark_mt_help,
- .parse = connmark_mt_parse,
- .final_check = connmark_mt_check,
- .print = connmark_mt_print,
- .save = connmark_mt_save,
- .extra_opts = connmark_mt_opts,
-};
-
-void _init(void)
-{
- xtables_register_match(&connmark_mt_reg_v0);
- xtables_register_match(&connmark_mt6_reg_v0);
- xtables_register_match(&connmark_mt_reg);
- xtables_register_match(&connmark_mt6_reg);
-}
git://git.onelab.eu / iptables.git / blobdiff