- djm@cvs.openbsd.org 2007/08/07 07:32:53

[openssh.git] / clientloop.c

diff --git a/clientloop.c b/clientloop.c
index 1aeb412a9754ceb35a07c78fa759ac3432bf9ea0..538644c201dbfd48637bff6766abd7e3cb6756dd 100644 (file)
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.179 2007/03/20 03:56:12 tedu Exp $ */
+/* $OpenBSD: clientloop.c,v 1.180 2007/08/07 07:32:53 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1773,6 +1773,50 @@ client_request_agent(const char *request_type, int rchan)
        return c;
 }
 
+int
+client_request_tun_fwd(int tun_mode, int local_tun, int remote_tun)
+{
+       Channel *c;
+       int fd;
+
+       if (tun_mode == SSH_TUNMODE_NO)
+               return 0;
+
+       if (!compat20) {
+               error("Tunnel forwarding is not support for protocol 1");
+               return -1;
+       }
+
+       debug("Requesting tun unit %d in mode %d", local_tun, tun_mode);
+
+       /* Open local tunnel device */
+       if ((fd = tun_open(local_tun, tun_mode)) == -1) {
+               error("Tunnel device open failed.");
+               return -1;
+       }
+
+       c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1,
+           CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);
+       c->datagram = 1;
+
+#if defined(SSH_TUN_FILTER)
+       if (options.tun_open == SSH_TUNMODE_POINTOPOINT)
+               channel_register_filter(c->self, sys_tun_infilter,
+                   sys_tun_outfilter);
+#endif
+
+       packet_start(SSH2_MSG_CHANNEL_OPEN);
+       packet_put_cstring("tun@openssh.com");
+       packet_put_int(c->self);
+       packet_put_int(c->local_window_max);
+       packet_put_int(c->local_maxpacket);
+       packet_put_int(tun_mode);
+       packet_put_int(remote_tun);
+       packet_send();
+
+       return 0;
+}
+
 /* XXXX move to generic input handler */
 static void
 client_input_channel_open(int type, u_int32_t seq, void *ctxt)