1 /* Shared library add-on to ip6tables for condition match */
8 #include<linux/netfilter_ipv6/ip6_tables.h>
9 #include<linux/netfilter_ipv6/ip6t_condition.h>
15 printf("condition match v%s options:\n"
16 "--condition [!] filename "
17 "Match on boolean value stored in /proc file\n",
22 static struct option opts[] = {
23 { .name = "condition", .has_arg = 1, .flag = 0, .val = 'X' },
28 parse(int c, char **argv, int invert, unsigned int *flags,
29 const struct ip6t_entry *entry, unsigned int *nfcache,
30 struct ip6t_entry_match **match)
32 struct condition6_info *info =
33 (struct condition6_info *) (*match)->data;
37 exit_error(PARAMETER_PROBLEM,
38 "Can't specify multiple conditions");
40 check_inverse(optarg, &invert, &optind, 0);
42 if (strlen(argv[optind - 1]) < CONDITION6_NAME_LEN)
43 strcpy(info->name, argv[optind - 1]);
45 exit_error(PARAMETER_PROBLEM,
46 "File name too long");
48 info->invert = invert;
58 final_check(unsigned int flags)
61 exit_error(PARAMETER_PROBLEM,
62 "Condition match: must specify --condition");
67 print(const struct ip6t_ip6 *ip,
68 const struct ip6t_entry_match *match, int numeric)
70 const struct condition6_info *info =
71 (const struct condition6_info *) match->data;
73 printf("condition %s%s ", (info->invert) ? "!" : "", info->name);
78 save(const struct ip6t_ip6 *ip,
79 const struct ip6t_entry_match *match)
81 const struct condition6_info *info =
82 (const struct condition6_info *) match->data;
84 printf("--condition %s\"%s\" ", (info->invert) ? "! " : "", info->name);
88 static struct ip6tables_match condition = {
90 .version = IPTABLES_VERSION,
91 .size = IP6T_ALIGN(sizeof(struct condition6_info)),
92 .userspacesize = IP6T_ALIGN(sizeof(struct condition6_info)),
95 .final_check = &final_check,
105 register_match6(&condition);