diff options
Diffstat (limited to 'extensions/libip6t_ROUTE.c')
| -rw-r--r-- | extensions/libip6t_ROUTE.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/extensions/libip6t_ROUTE.c b/extensions/libip6t_ROUTE.c deleted file mode 100644 index ad83a1d6..00000000 --- a/extensions/libip6t_ROUTE.c +++ /dev/null @@ -1,240 +0,0 @@ -/* Shared library add-on to iptables to add ROUTE v6 target support. - * Author : Cedric de Launois, <delaunois@info.ucl.ac.be> - * v 1.1 2004/11/23 - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <getopt.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <arpa/inet.h> - -#include <ip6tables.h> -#include <linux/netfilter_ipv6/ip6_tables.h> -#include <linux/netfilter_ipv6/ip6t_ROUTE.h> - -/* compile IP6T_ROUTE_TEE support even if kernel headers are unpatched */ -#ifndef IP6T_ROUTE_TEE -#define IP6T_ROUTE_TEE 0x02 -#endif - -/* Function which prints out usage message. */ -static void -help(void) -{ - printf( -"ROUTE target v%s options:\n" -" --oif \tifname \t\tRoute the packet through `ifname' network interface\n" -" --gw \tip \t\tRoute the packet via this gateway\n" -" --continue\t \t\tRoute packet and continue traversing the\n" -" \t \t\trules. Not valid with --iif or --tee.\n" -" --tee\t \t\tDuplicate packet, route the duplicate,\n" -" \t \t\tcontinue traversing with original packet.\n" -" \t \t\tNot valid with --iif or --continue.\n" -"\n", -"1.1"); -} - -static struct option opts[] = { - { "oif", 1, 0, '1' }, - { "iif", 1, 0, '2' }, - { "gw", 1, 0, '3' }, - { "continue", 0, 0, '4' }, - { "tee", 0, 0, '5' }, - { 0 } -}; - -/* Initialize the target. */ -static void -init(struct ip6t_entry_target *t, unsigned int *nfcache) -{ - struct ip6t_route_target_info *route_info = - (struct ip6t_route_target_info*)t->data; - - route_info->oif[0] = '\0'; - route_info->iif[0] = '\0'; - route_info->gw[0] = 0; - route_info->gw[1] = 0; - route_info->gw[2] = 0; - route_info->gw[3] = 0; - route_info->flags = 0; -} - - -#define IP6T_ROUTE_OPT_OIF 0x01 -#define IP6T_ROUTE_OPT_IIF 0x02 -#define IP6T_ROUTE_OPT_GW 0x04 -#define IP6T_ROUTE_OPT_CONTINUE 0x08 -#define IP6T_ROUTE_OPT_TEE 0x10 - -/* 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_route_target_info *route_info = - (struct ip6t_route_target_info*)(*target)->data; - - switch (c) { - case '1': - if (*flags & IP6T_ROUTE_OPT_OIF) - exit_error(PARAMETER_PROBLEM, - "Can't specify --oif twice"); - - if (check_inverse(optarg, &invert, NULL, 0)) - exit_error(PARAMETER_PROBLEM, - "Unexpected `!' after --oif"); - - if (strlen(optarg) > sizeof(route_info->oif) - 1) - exit_error(PARAMETER_PROBLEM, - "Maximum interface name length %u", - sizeof(route_info->oif) - 1); - - strcpy(route_info->oif, optarg); - *flags |= IP6T_ROUTE_OPT_OIF; - break; - - case '2': - exit_error(PARAMETER_PROBLEM, - "--iif option not implemented"); - break; - - case '3': - if (*flags & IP6T_ROUTE_OPT_GW) - exit_error(PARAMETER_PROBLEM, - "Can't specify --gw twice"); - - if (check_inverse(optarg, &invert, NULL, 0)) - exit_error(PARAMETER_PROBLEM, - "Unexpected `!' after --gw"); - - if (!inet_pton(AF_INET6, optarg, (struct in6_addr*)&route_info->gw)) { - exit_error(PARAMETER_PROBLEM, - "Invalid IPv6 address %s", - optarg); - } - - *flags |= IP6T_ROUTE_OPT_GW; - break; - - case '4': - if (*flags & IP6T_ROUTE_OPT_CONTINUE) - exit_error(PARAMETER_PROBLEM, - "Can't specify --continue twice"); - if (*flags & IP6T_ROUTE_OPT_TEE) - exit_error(PARAMETER_PROBLEM, - "Can't specify --continue AND --tee"); - - route_info->flags |= IP6T_ROUTE_CONTINUE; - *flags |= IP6T_ROUTE_OPT_CONTINUE; - - break; - - case '5': - if (*flags & IP6T_ROUTE_OPT_TEE) - exit_error(PARAMETER_PROBLEM, - "Can't specify --tee twice"); - if (*flags & IP6T_ROUTE_OPT_CONTINUE) - exit_error(PARAMETER_PROBLEM, - "Can't specify --tee AND --continue"); - - route_info->flags |= IP6T_ROUTE_TEE; - *flags |= IP6T_ROUTE_OPT_TEE; - - break; - - default: - return 0; - } - - return 1; -} - - -static void -final_check(unsigned int flags) -{ - if (!flags) - exit_error(PARAMETER_PROBLEM, - "ROUTE target: oif or gw option required"); -} - - -/* Prints out the targinfo. */ -static void -print(const struct ip6t_ip6 *ip, - const struct ip6t_entry_target *target, - int numeric) -{ - const struct ip6t_route_target_info *route_info - = (const struct ip6t_route_target_info *)target->data; - - printf("ROUTE "); - - if (route_info->oif[0]) - printf("oif:%s ", route_info->oif); - - if (route_info->gw[0] - || route_info->gw[1] - || route_info->gw[2] - || route_info->gw[3]) { - char address[INET6_ADDRSTRLEN]; - printf("gw:%s ", inet_ntop(AF_INET6, route_info->gw, address, INET6_ADDRSTRLEN)); - } - - if (route_info->flags & IP6T_ROUTE_CONTINUE) - printf("continue"); - - if (route_info->flags & IP6T_ROUTE_TEE) - printf("tee"); - -} - - -static void save(const struct ip6t_ip6 *ip, - const struct ip6t_entry_target *target) -{ - const struct ip6t_route_target_info *route_info - = (const struct ip6t_route_target_info *)target->data; - - if (route_info->oif[0]) - printf("--oif %s ", route_info->oif); - - if (route_info->gw[0] - || route_info->gw[1] - || route_info->gw[2] - || route_info->gw[3]) { - char address[INET6_ADDRSTRLEN]; - printf("--gw %s ", inet_ntop(AF_INET6, route_info->gw, address, INET6_ADDRSTRLEN)); - } - - if (route_info->flags & IP6T_ROUTE_CONTINUE) - printf("--continue "); - - if (route_info->flags & IP6T_ROUTE_TEE) - printf("--tee "); -} - - -static struct ip6tables_target route = { - .name = "ROUTE", - .version = IPTABLES_VERSION, - .size = IP6T_ALIGN(sizeof(struct ip6t_route_target_info)), - .userspacesize = IP6T_ALIGN(sizeof(struct ip6t_route_target_info)), - .help = &help, - .init = &init, - .parse = &parse, - .final_check = &final_check, - .print = &print, - .save = &save, - .extra_opts = opts, -}; - -void _init(void) -{ - register_target6(&route); -} |