diff options
| author | Shivani Bhardwaj <shivanib134@gmail.com> | 2016-01-12 22:17:54 +0530 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-02-16 19:30:24 +0100 |
| commit | 95df9884027eadbd1479cefd49f290194abbb8d2 (patch) | |
| tree | 8db88880f827851e67bf5b2c25848d2be63fe708 /extensions | |
| parent | 0198008d1de13037c2e809c598d51771b166cc46 (diff) | |
extensions: libipt_REDIRECT: Add translation to nft
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>
Diffstat (limited to 'extensions')
| -rw-r--r-- | extensions/libipt_REDIRECT.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/extensions/libipt_REDIRECT.c b/extensions/libipt_REDIRECT.c index 610a9499..2e5b33dd 100644 --- a/extensions/libipt_REDIRECT.c +++ b/extensions/libipt_REDIRECT.c @@ -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) |