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TEE: IPv6 support for iptables module

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This commit is contained in:
Jan Engelhardt
2009-01-10 10:19:21 +01:00
parent 4afebf88eb
commit b95e5f6417
1 changed files with 64 additions and 1 deletions
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65
extensions/libxt_TEE.c
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@@ -1,7 +1,7 @@
/*
* "TEE" target extension for iptables
* Copyright © Sebastian Claßen <sebastian.classen [at] freenet.ag>, 2007
* Jan Engelhardt <jengelh [at] medozas de>, 2007 - 2008
* Jan Engelhardt <jengelh [at] medozas de>, 2007 - 2009
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License; either
@@ -70,6 +70,35 @@ static int tee_tg_parse(int c, char **argv, int invert, unsigned int *flags,
return false;
}
static int tee_tg6_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_target **target)
{
struct xt_tee_tginfo *info = (void *)(*target)->data;
const struct in6_addr *ia;
switch (c) {
case 'g':
if (*flags & FLAG_GATEWAY)
exit_error(PARAMETER_PROBLEM,
"Cannot specify --gw more than once");
if (check_inverse(optarg, &invert, NULL, 0))
exit_error(PARAMETER_PROBLEM,
"Unexpected \"!\" after --gateway");
ia = numeric_to_ip6addr(optarg);
if (ia == NULL)
exit_error(PARAMETER_PROBLEM,
"Invalid IP address %s", optarg);
memcpy(&info->gw, ia, sizeof(*ia));
*flags |= FLAG_GATEWAY;
return true;
}
return false;
}
static void tee_tg_check(unsigned int flags)
{
if (flags == 0)
@@ -88,6 +117,17 @@ static void tee_tg_print(const void *ip, const struct xt_entry_target *target,
printf("TEE gw:%s ", ipaddr_to_anyname(&info->gw.in));
}
static void tee_tg6_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
const struct xt_tee_tginfo *info = (const void *)target->data;
if (numeric)
printf("TEE gw:%s ", ip6addr_to_numeric(&info->gw.in6));
else
printf("TEE gw:%s ", ip6addr_to_anyname(&info->gw.in6));
}
static void tee_tg_save(const void *ip, const struct xt_entry_target *target)
{
const struct xt_tee_tginfo *info = (const void *)target->data;
@@ -95,6 +135,13 @@ static void tee_tg_save(const void *ip, const struct xt_entry_target *target)
printf("--gateway %s ", ipaddr_to_numeric(&info->gw.in));
}
static void tee_tg6_save(const void *ip, const struct xt_entry_target *target)
{
const struct xt_tee_tginfo *info = (const void *)target->data;
printf("--gateway %s ", ip6addr_to_numeric(&info->gw.in6));
}
static struct xtables_target tee_tg_reg = {
.name = "TEE",
.version = XTABLES_VERSION,
@@ -110,7 +157,23 @@ static struct xtables_target tee_tg_reg = {
.extra_opts = tee_tg_opts,
};
static struct xtables_target tee_tg6_reg = {
.name = "TEE",
.version = XTABLES_VERSION,
.revision = 0,
.family = PF_INET6,
.size = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
.userspacesize = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
.help = tee_tg_help,
.parse = tee_tg6_parse,
.final_check = tee_tg_check,
.print = tee_tg6_print,
.save = tee_tg6_save,
.extra_opts = tee_tg_opts,
};
static __attribute__((constructor)) void tee_tg_ldr(void)
{
xtables_register_target(&tee_tg_reg);
xtables_register_target(&tee_tg6_reg);
}