stun

commit 8170f898519ea02c946d859157871be61c2a54a7
parent 4a6652547f545a50cac664a6149b30052af73d97
Author: sin <sin@2f30.org>
Date:   Wed, 30 Mar 2016 13:30:50 +0100

allow binding to given address

Diffstat:
M
stun.8
 | 
6
+++++-
M
stun.c
 | 
8
++++++--

2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/stun.8 b/stun.8
@@ -8,6 +8,7 @@
 .Nm stun
 .Op Fl df
 .Fl s
+.Op Fl b Ar address
 .Op Fl p Ar port
 .Op Fl t Ar type
 .Ar interface
@@ -27,13 +28,16 @@ in advance.  In client mode
 will automatically try to reconnect to the server every minute if the
 connection drops.
 .Sh OPTIONS
-.Bl -tag -width "-p port"
+.Bl -tag -width "-b address"
 .It Fl d
 Enable debug output.
 .It Fl f
 Run in foreground.
 .It Fl s
 Enable server mode.  Default is off.
+.It Fl b Ar address
+Bind the server to the given
+.Ar address .
 .It Fl p Ar port
 Listen on or connect to specified
 .Ar port .
diff --git a/stun.c b/stun.c
@@ -93,6 +93,7 @@ enum {
 EVP_CIPHER_CTX ectx, dctx;
 unsigned char aeskey[EVP_MAX_KEY_LENGTH];
 char *argv0;
+char *bindaddr;
 char *host;
 char *port = "12080";
 int devtype = TUNDEV;
@@ -633,7 +634,7 @@ serversetup(int devfd)
 	hints.ai_socktype = SOCK_STREAM;
 	hints.ai_flags = AI_PASSIVE;
 
-	ret = getaddrinfo(NULL, port, &hints, &ai);
+	ret = getaddrinfo(bindaddr, port, &hints, &ai);
 	if (ret != 0)
 		logerr("getaddrinfo: %s", gai_strerror(ret));
 
@@ -749,7 +750,7 @@ err:
 void
 usage(void)
 {
-	fprintf(stderr, "usage: stun [-df] -s [-p port] [-t type] interface\n");
+	fprintf(stderr, "usage: stun [-df] -s [-b address] [-p port] [-t type] interface\n");
 	fprintf(stderr, "       stun [-df] -h host [-p port] [-t type] interface\n");
 	exit(1);
 }
@@ -770,6 +771,9 @@ main(int argc, char *argv[])
 	case 's':
 		sflag = 1;
 		break;
+	case 'b':
+		bindaddr = EARGF(usage());
+		break;
 	case 'h':
 		host = EARGF(usage());
 		break;