+++ /dev/null
-/* Shared library add-on to ip6tables to add mobility header support. */
-/*
- * Copyright (C)2006 USAGI/WIDE Project
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Author:
- * Masahide NAKAMURA @USAGI <masahide.nakamura.cz@hitachi.com>
- *
- * Based on libip6t_{icmpv6,udp}.c
- */
-#include <stdio.h>
-#include <netdb.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_mh.h>
-
-struct mh_name {
- const char *name;
- u_int8_t type;
-};
-
-static const struct mh_name mh_names[] = {
- { "binding-refresh-request", 0, },
- /* Alias */ { "brr", 0, },
- { "home-test-init", 1, },
- /* Alias */ { "hoti", 1, },
- { "careof-test-init", 2, },
- /* Alias */ { "coti", 2, },
- { "home-test", 3, },
- /* Alias */ { "hot", 3, },
- { "careof-test", 4, },
- /* Alias */ { "cot", 4, },
- { "binding-update", 5, },
- /* Alias */ { "bu", 5, },
- { "binding-acknowledgement", 6, },
- /* Alias */ { "ba", 6, },
- { "binding-error", 7, },
- /* Alias */ { "be", 7, },
-};
-
-static void print_types_all(void)
-{
- unsigned int i;
- printf("Valid MH types:");
-
- for (i = 0; i < sizeof(mh_names)/sizeof(struct mh_name); i++) {
- if (i && mh_names[i].type == mh_names[i-1].type)
- printf(" (%s)", mh_names[i].name);
- else
- printf("\n%s", mh_names[i].name);
- }
- printf("\n");
-}
-
-static void mh_help(void)
-{
- printf(
-"mh match options:\n"
-" --mh-type [!] type[:type] match mh type\n");
- print_types_all();
-}
-
-static void mh_init(struct xt_entry_match *m)
-{
- struct ip6t_mh *mhinfo = (struct ip6t_mh *)m->data;
-
- mhinfo->types[1] = 0xFF;
-}
-
-static unsigned int name_to_type(const char *name)
-{
- int namelen = strlen(name);
- unsigned int limit = sizeof(mh_names)/sizeof(struct mh_name);
- unsigned int match = limit;
- unsigned int i;
-
- for (i = 0; i < limit; i++) {
- if (strncasecmp(mh_names[i].name, name, namelen) == 0) {
- int len = strlen(mh_names[i].name);
- if (match == limit || len == namelen)
- match = i;
- }
- }
-
- if (match != limit) {
- return mh_names[match].type;
- } else {
- unsigned int number;
-
- if (string_to_number(name, 0, 255, &number) == -1)
- exit_error(PARAMETER_PROBLEM,
- "Invalid MH type `%s'\n", name);
- return number;
- }
-}
-
-static void parse_mh_types(const char *mhtype, u_int8_t *types)
-{
- char *buffer;
- char *cp;
-
- buffer = strdup(mhtype);
- if ((cp = strchr(buffer, ':')) == NULL)
- types[0] = types[1] = name_to_type(buffer);
- else {
- *cp = '\0';
- cp++;
-
- types[0] = buffer[0] ? name_to_type(buffer) : 0;
- types[1] = cp[0] ? name_to_type(cp) : 0xFF;
-
- if (types[0] > types[1])
- exit_error(PARAMETER_PROBLEM,
- "Invalid MH type range (min > max)");
- }
- free(buffer);
-}
-
-#define MH_TYPES 0x01
-
-static int mh_parse(int c, char **argv, int invert, unsigned int *flags,
- const void *entry, struct xt_entry_match **match)
-{
- struct ip6t_mh *mhinfo = (struct ip6t_mh *)(*match)->data;
-
- switch (c) {
- case '1':
- if (*flags & MH_TYPES)
- exit_error(PARAMETER_PROBLEM,
- "Only one `--mh-type' allowed");
- check_inverse(optarg, &invert, &optind, 0);
- parse_mh_types(argv[optind-1], mhinfo->types);
- if (invert)
- mhinfo->invflags |= IP6T_MH_INV_TYPE;
- *flags |= MH_TYPES;
- break;
-
- default:
- return 0;
- }
-
- return 1;
-}
-
-static const char *type_to_name(u_int8_t type)
-{
- unsigned int i;
-
- for (i = 0; i < sizeof(mh_names)/sizeof(struct mh_name); i++) {
- if (mh_names[i].type == type)
- return mh_names[i].name;
- }
-
- return NULL;
-}
-
-static void print_type(u_int8_t type, int numeric)
-{
- const char *name;
- if (numeric || !(name = type_to_name(type)))
- printf("%u", type);
- else
- printf("%s", name);
-}
-
-static void print_types(u_int8_t min, u_int8_t max, int invert, int numeric)
-{
- const char *inv = invert ? "!" : "";
-
- if (min != 0 || max != 0xFF || invert) {
- if (min == max) {
- printf("%s", inv);
- print_type(min, numeric);
- } else {
- printf("%s", inv);
- print_type(min, numeric);
- printf(":");
- print_type(max, numeric);
- }
- printf(" ");
- }
-}
-
-static void mh_print(const void *ip, const struct xt_entry_match *match,
- int numeric)
-{
- const struct ip6t_mh *mhinfo = (struct ip6t_mh *)match->data;
-
- printf("mh ");
- print_types(mhinfo->types[0], mhinfo->types[1],
- mhinfo->invflags & IP6T_MH_INV_TYPE,
- numeric);
- if (mhinfo->invflags & ~IP6T_MH_INV_MASK)
- printf("Unknown invflags: 0x%X ",
- mhinfo->invflags & ~IP6T_MH_INV_MASK);
-}
-
-static void mh_save(const void *ip, const struct xt_entry_match *match)
-{
- const struct ip6t_mh *mhinfo = (struct ip6t_mh *)match->data;
-
- if (mhinfo->types[0] == 0 && mhinfo->types[1] == 0xFF)
- return;
-
- if (mhinfo->invflags & IP6T_MH_INV_TYPE)
- printf("! ");
-
- if (mhinfo->types[0] != mhinfo->types[1])
- printf("--mh-type %u:%u ", mhinfo->types[0], mhinfo->types[1]);
- else
- printf("--mh-type %u ", mhinfo->types[0]);
-}
-
-static const struct option mh_opts[] = {
- { "mh-type", 1, NULL, '1' },
- { .name = NULL }
-};
-
-static struct xtables_match mh_mt6_reg = {
- .name = "mh",
- .version = XTABLES_VERSION,
- .family = PF_INET6,
- .size = XT_ALIGN(sizeof(struct ip6t_mh)),
- .userspacesize = XT_ALIGN(sizeof(struct ip6t_mh)),
- .help = mh_help,
- .init = mh_init,
- .parse = mh_parse,
- .print = mh_print,
- .save = mh_save,
- .extra_opts = mh_opts,
-};
-
-void _init(void)
-{
- xtables_register_match(&mh_mt6_reg);
-}
git://git.onelab.eu / iptables.git / blobdiff