Add translation for REDIRECT target to nftables.
Examples:
$ sudo ip6tables-translate -t nat -A prerouting -p tcp --dport 80 -j REDIRECT --to-ports 8080
nft add rule ip6 nat prerouting tcp dport 80 counter redirect to 8080
$ sudo ip6tables-translate -t nat -A prerouting -p tcp --dport 80 -j REDIRECT --to-ports 8080 --random
nft add rule ip6 nat prerouting tcp dport 80 counter redirect to 8080 random
Signed-off-by: Shivani Bhardwaj <shivanib134@xxxxxxxxx>
---
extensions/libip6t_REDIRECT.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/extensions/libip6t_REDIRECT.c b/extensions/libip6t_REDIRECT.c
index 1724aa6..d907d94 100644
--- a/extensions/libip6t_REDIRECT.c
+++ b/extensions/libip6t_REDIRECT.c
@@ -132,6 +132,24 @@ static void REDIRECT_save(const void *ip, const struct xt_entry_target *target)
}
}
+static int REDIRECT_xlate(const struct xt_entry_target *target,
+ struct xt_buf *buf, int numeric)
+{
+ const struct nf_nat_range *range = (const void *)target->data;
+
+ if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+ xt_buf_add(buf, "redirect to %hu",
+ ntohs(range->min_proto.tcp.port));
+ if (range->max_proto.tcp.port != range->min_proto.tcp.port)
+ xt_buf_add(buf, "-%hu ",
+ ntohs(range->max_proto.tcp.port));
+ if (range->flags & NF_NAT_RANGE_PROTO_RANDOM)
+ xt_buf_add(buf, " random ");
+ }
+
+ return 1;
+}
+
static struct xtables_target redirect_tg_reg = {
.name = "REDIRECT",
.version = XTABLES_VERSION,
@@ -143,6 +161,7 @@ static struct xtables_target redirect_tg_reg = {
.print = REDIRECT_print,
.save = REDIRECT_save,
.x6_options = REDIRECT_opts,
+ .xlate = REDIRECT_xlate,
};
void _init(void)
--
1.9.1
--
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