]> git.ipfire.org Git - thirdparty/iptables.git/commitdiff
extensions: libipt_REDIRECT: Add translation to nft
authorShivani Bhardwaj <shivanib134@gmail.com>
Tue, 12 Jan 2016 16:47:54 +0000 (22:17 +0530)
committerPablo Neira Ayuso <pablo@netfilter.org>
Tue, 16 Feb 2016 18:30:24 +0000 (19:30 +0100)
Add translation for target REDIRECT to nftables.

Examples:

$ sudo iptables-translate -t nat -A prerouting -p tcp --dport 80 -j REDIRECT --to-ports 8080
nft add rule ip nat prerouting tcp dport 80 counter redirect to 8080

$ sudo iptables-translate -t nat -A prerouting -p tcp --dport 80 -j REDIRECT --to-ports 8080 --random
nft add rule ip nat prerouting tcp dport 80 counter redirect to 8080 random

Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
extensions/libipt_REDIRECT.c

index 610a94991a6ef9063e9d4e1cd93c4232799dfcff..2e5b33dd3cc936abfeeb43120038329e2cc70856 100644 (file)
@@ -135,6 +135,24 @@ 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_ipv4_multi_range_compat *mr =
+                                       (const void *)target->data;
+       const struct nf_nat_ipv4_range *r = &mr->range[0];
+
+       if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
+               xt_buf_add(buf, "redirect to %hu", ntohs(r->min.tcp.port));
+               if (r->max.tcp.port != r->min.tcp.port)
+                       xt_buf_add(buf, "-%hu ", ntohs(r->max.tcp.port));
+               if (mr->range[0].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,
@@ -147,6 +165,7 @@ static struct xtables_target redirect_tg_reg = {
        .print          = REDIRECT_print,
        .save           = REDIRECT_save,
        .x6_options     = REDIRECT_opts,
+       .xlate          = REDIRECT_xlate,
 };
 
 void _init(void)