/* ebt_mark_m
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*
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* Authors:
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* Bart De Schuymer <bdschuym@pandora.be>
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*
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* July, 2002
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*
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* Adapted by Arturo Borrero Gonzalez <arturo@debian.org>
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* to use libxtables for ebtables-compat in 2015.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <xtables.h>
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#include <linux/netfilter_bridge/ebt_mark_m.h>
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#define MARK '1'
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static struct option brmark_m_opts[] = {
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{ .name = "mark", .has_arg = true, .val = MARK },
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XT_GETOPT_TABLEEND,
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};
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static void brmark_m_print_help(void)
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{
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printf(
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"mark option:\n"
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"--mark [!] [value][/mask]: Match nfmask value (see man page)\n");
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}
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static void brmark_m_init(struct xt_entry_match *match)
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{
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struct ebt_mark_m_info *info = (struct ebt_mark_m_info *)match->data;
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info->mark = 0;
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info->mask = 0;
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info->invert = 0;
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info->bitmask = 0;
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}
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#define OPT_MARK 0x01
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static int
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brmark_m_parse(int c, char **argv, int invert, unsigned int *flags,
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const void *entry, struct xt_entry_match **match)
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{
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struct ebt_mark_m_info *info = (struct ebt_mark_m_info *)
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(*match)->data;
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char *end;
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switch (c) {
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case MARK:
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if (invert)
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info->invert = 1;
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info->mark = strtoul(optarg, &end, 0);
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info->bitmask = EBT_MARK_AND;
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if (*end == '/') {
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if (end == optarg)
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info->bitmask = EBT_MARK_OR;
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info->mask = strtoul(end+1, &end, 0);
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} else {
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info->mask = 0xffffffff;
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}
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if (*end != '\0' || end == optarg)
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xtables_error(PARAMETER_PROBLEM, "Bad mark value '%s'",
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optarg);
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break;
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default:
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return 0;
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}
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*flags |= info->bitmask;
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return 1;
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}
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static void brmark_m_final_check(unsigned int flags)
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{
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if (!flags)
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xtables_error(PARAMETER_PROBLEM,
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"You must specify proper arguments");
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}
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static void brmark_m_print(const void *ip, const struct xt_entry_match *match,
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int numeric)
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{
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struct ebt_mark_m_info *info = (struct ebt_mark_m_info *)match->data;
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printf("--mark ");
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if (info->invert)
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printf("! ");
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if (info->bitmask == EBT_MARK_OR)
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printf("/0x%lx ", info->mask);
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else if (info->mask != 0xffffffff)
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printf("0x%lx/0x%lx ", info->mark, info->mask);
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else
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printf("0x%lx ", info->mark);
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}
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static struct xtables_match brmark_m_match = {
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.name = "mark_m",
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.revision = 0,
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.version = XTABLES_VERSION,
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.family = NFPROTO_BRIDGE,
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.size = XT_ALIGN(sizeof(struct ebt_mark_m_info)),
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.userspacesize = XT_ALIGN(sizeof(struct ebt_mark_m_info)),
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.init = brmark_m_init,
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.help = brmark_m_print_help,
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.parse = brmark_m_parse,
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.final_check = brmark_m_final_check,
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.print = brmark_m_print,
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.extra_opts = brmark_m_opts,
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};
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void _init(void)
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{
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xtables_register_match(&brmark_m_match);
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}
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