Added multiport translations for ipv4 only .
It's for review pupose only , it definitely needs changes .
example :
iptables-translate -A INPUT -p tcp -m multiport --dports 22,http,ssh -j ACCEPT
nft add rule ip filter INPUT ip protocol tcp dport { 22,80,22 } counter accept
diff --git a/extensions/libxt_multiport.c b/extensions/libxt_multiport.c
index 03af5a9..6b46f93 100644
--- a/extensions/libxt_multiport.c
+++ b/extensions/libxt_multiport.c
@@ -468,6 +468,67 @@ static void multiport_save6_v1(const void *ip_void,
__multiport_save_v1(match, ip->proto);
}
+static int multiport_xlate(const struct xt_entry_match *match, struct
xt_xlate *xl,
+ int numeric)
+{
+ const struct xt_multiport_v1 *multiinfo
+ = (const struct xt_multiport_v1 *)match->data;
+ unsigned int i;
+
+ switch (multiinfo->flags) {
+ case XT_MULTIPORT_SOURCE:
+ xt_xlate_add(xl,"sport ");
+ break;
+
+ case XT_MULTIPORT_DESTINATION:
+ xt_xlate_add(xl,"dport ");
+ break;
+
+ default:
+ return 1;
+ }
+ xt_xlate_add(xl," { ");
+ for (i=0; i < multiinfo->count; i++) {
+ xt_xlate_add(xl,"%u%s", multiinfo->ports[i],
+ (i+1) != multiinfo->count ? "," : "");
+ }
+ xt_xlate_add(xl," } ");
+ return 1;
+}
+
+static int multiport_xlate_v1(const struct xt_entry_match *match,
struct xt_xlate *xl,
+ int numeric)
+{
+ const struct xt_multiport_v1 *multiinfo
+ = (const struct xt_multiport_v1 *)match->data;
+ unsigned int i;
+
+ switch (multiinfo->flags) {
+ case XT_MULTIPORT_SOURCE:
+ xt_xlate_add(xl,"sport ");
+ break;
+
+ case XT_MULTIPORT_DESTINATION:
+ xt_xlate_add(xl,"dport ");
+ break;
+
+ default:
+ return 1;
+ }
+ xt_xlate_add(xl," { ");
+ for (i=0; i < multiinfo->count; i++) {
+ xt_xlate_add(xl,"%u%s", multiinfo->ports[i],
+ (i+1) != multiinfo->count ? "," : "");
+ if (multiinfo->pflags[i]) {
+ i++;
+ xt_xlate_add(xl,"%u%s", multiinfo->ports[i],
+ (i) != multiinfo->count ? "," : "");
+ }
+ }
+ xt_xlate_add(xl," } ");
+ return 1;
+}
+
static struct xtables_match multiport_mt_reg[] = {
{
.family = NFPROTO_IPV4,
@@ -482,6 +543,7 @@ static struct xtables_match multiport_mt_reg[] = {
.print = multiport_print,
.save = multiport_save,
.x6_options = multiport_opts,
+ .xlate = multiport_xlate,
},
{
.family = NFPROTO_IPV6,
@@ -510,6 +572,7 @@ static struct xtables_match multiport_mt_reg[] = {
.print = multiport_print_v1,
.save = multiport_save_v1,
.x6_options = multiport_opts,
+ .xlate = multiport_xlate_v1,
},
{
.family = NFPROTO_IPV6,
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