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Diffstat (limited to 'conf.c')
-rw-r--r--conf.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/conf.c b/conf.c
index 475dbe0..fb6a811 100644
--- a/conf.c
+++ b/conf.c
@@ -135,7 +135,7 @@ static int parse_port_range(const char *s, char **endptr,
* @ifname: Listening interface
* @first: First port to forward
* @last: Last port to forward
- * @exclude: Bitmap of ports to exclude
+ * @exclude: Bitmap of ports to exclude (may be NULL)
* @to: Port to translate @first to when forwarding
* @flags: Flags for forwarding entries
*/
@@ -168,11 +168,11 @@ static void conf_ports_range_except(const struct ctx *c, char optname,
}
for (base = first; base <= last; base++) {
- if (bitmap_isset(exclude, base))
+ if (exclude && bitmap_isset(exclude, base))
continue;
for (i = base; i <= last; i++) {
- if (bitmap_isset(exclude, i))
+ if (exclude && bitmap_isset(exclude, i))
break;
if (bitmap_isset(fwd->map, i)) {
@@ -180,9 +180,9 @@ static void conf_ports_range_except(const struct ctx *c, char optname,
"Altering mapping of already mapped port number: %s", optarg);
}
- if (optname == 't')
+ if (!(flags & FWD_SCAN) && optname == 't')
fd = tcp_listen(c, PIF_HOST, addr, ifname, i);
- else if (optname == 'u')
+ else if (!(flags & FWD_SCAN) && optname == 'u')
fd = udp_listen(c, PIF_HOST, addr, ifname, i);
else
/* No way to check in advance for -T and -U */
@@ -2200,6 +2200,27 @@ void conf(struct ctx *c, int argc, char **argv)
if (!c->udp.fwd_out.mode)
c->udp.fwd_out.mode = fwd_default;
+ if (c->tcp.fwd_in.mode == FWD_AUTO) {
+ conf_ports_range_except(c, 't', "auto", &c->tcp.fwd_in,
+ NULL, NULL, 1, NUM_PORTS - 1,
+ NULL, 1, FWD_SCAN);
+ }
+ if (c->tcp.fwd_out.mode == FWD_AUTO) {
+ conf_ports_range_except(c, 'T', "auto", &c->tcp.fwd_out,
+ NULL, "lo", 1, NUM_PORTS - 1,
+ NULL, 1, FWD_SCAN);
+ }
+ if (c->udp.fwd_in.mode == FWD_AUTO) {
+ conf_ports_range_except(c, 'u', "auto", &c->udp.fwd_in,
+ NULL, NULL, 1, NUM_PORTS - 1,
+ NULL, 1, FWD_SCAN);
+ }
+ if (c->udp.fwd_out.mode == FWD_AUTO) {
+ conf_ports_range_except(c, 'U', "auto", &c->udp.fwd_out,
+ NULL, "lo", 1, NUM_PORTS - 1,
+ NULL, 1, FWD_SCAN);
+ }
+
if (!c->quiet)
conf_print(c);
}