| /* Shared library add-on to iptables to add IMQ target support. */ |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <getopt.h> |
| |
| #include <ip6tables.h> |
| #include <linux/netfilter_ipv6/ip6_tables.h> |
| #include <linux/netfilter_ipv6/ip6t_IMQ.h> |
| |
| /* Function which prints out usage message. */ |
| static void |
| help(void) |
| { |
| printf( |
| "IMQ target v%s options:\n" |
| " --todev <N> enqueue to imq<N>, defaults to 0\n", |
| IPTABLES_VERSION); |
| } |
| |
| static struct option opts[] = { |
| { "todev", 1, 0, '1' }, |
| { 0 } |
| }; |
| |
| /* Initialize the target. */ |
| static void |
| init(struct ip6t_entry_target *t, unsigned int *nfcache) |
| { |
| struct ip6t_imq_info *mr = (struct ip6t_imq_info*)t->data; |
| |
| mr->todev = 0; |
| *nfcache |= NFC_UNKNOWN; |
| } |
| |
| /* Function which parses command options; returns true if it |
| ate an option */ |
| static int |
| parse(int c, char **argv, int invert, unsigned int *flags, |
| const struct ip6t_entry *entry, |
| struct ip6t_entry_target **target) |
| { |
| struct ip6t_imq_info *mr = (struct ip6t_imq_info*)(*target)->data; |
| |
| switch(c) { |
| case '1': |
| if (check_inverse(optarg, &invert, NULL, 0)) |
| exit_error(PARAMETER_PROBLEM, |
| "Unexpected `!' after --todev"); |
| mr->todev=atoi(optarg); |
| break; |
| default: |
| return 0; |
| } |
| return 1; |
| } |
| |
| static void |
| final_check(unsigned int flags) |
| { |
| } |
| |
| /* Prints out the targinfo. */ |
| static void |
| print(const struct ip6t_ip6 *ip, |
| const struct ip6t_entry_target *target, |
| int numeric) |
| { |
| struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data; |
| |
| printf("IMQ: todev %u ", mr->todev); |
| } |
| |
| /* Saves the union ipt_targinfo in parsable form to stdout. */ |
| static void |
| save(const struct ip6t_ip6 *ip, const struct ip6t_entry_target *target) |
| { |
| struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data; |
| |
| printf("--todev %u", mr->todev); |
| } |
| |
| static |
| struct ip6tables_target imq |
| = { NULL, |
| "IMQ", |
| IPTABLES_VERSION, |
| IP6T_ALIGN(sizeof(struct ip6t_imq_info)), |
| IP6T_ALIGN(sizeof(struct ip6t_imq_info)), |
| &help, |
| &init, |
| &parse, |
| &final_check, |
| &print, |
| &save, |
| opts |
| }; |
| |
| void _init(void) |
| { |
| register_target6(&imq); |
| } |