Add translation for helper module to nftables.
Examples:
$ sudo iptables-translate -A FORWARD -m helper --helper sip
nft add rule ip filter FORWARD ct helper \"sip\" counter
$ sudo iptables-translate -A FORWARD -m helper ! --helper ftp
nft add rule ip filter FORWARD ct helper != \"ftp\" counter
Signed-off-by: Shivani Bhardwaj <shivanib134@xxxxxxxxx>
---
extensions/libxt_helper.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/extensions/libxt_helper.c b/extensions/libxt_helper.c
index c9f9435..5f1d8b1 100644
--- a/extensions/libxt_helper.c
+++ b/extensions/libxt_helper.c
@@ -45,6 +45,19 @@ static void helper_save(const void *ip, const struct xt_entry_match *match)
xtables_save_string(info->name);
}
+static int helper_xlate(const struct xt_entry_match *match,
+ struct xt_buf *buf, int numeric)
+{
+ const struct xt_helper_info *info = (const void *)match->data;
+
+ xt_buf_add(buf, "ct helper");
+
+ xt_buf_add(buf, "%s \\\"%s\\\" ",
+ info->invert ? " !=" : "", info->name);
+
+ return 1;
+}
+
static struct xtables_match helper_match = {
.family = NFPROTO_UNSPEC,
.name = "helper",
@@ -55,6 +68,7 @@ static struct xtables_match helper_match = {
.save = helper_save,
.x6_parse = helper_parse,
.x6_options = helper_opts,
+ .xlate = helper_xlate,
};
void _init(void)
--
1.9.1
--
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