diff options
author | Darren Tucker <dtucker@zip.com.au> | 2010-01-12 19:40:27 +1100 |
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committer | Darren Tucker <dtucker@zip.com.au> | 2010-01-12 19:40:27 +1100 |
commit | 7ad8dd21da5e2a2687fdff14142b70f1587f96ce (patch) | |
tree | 5d8e196d1a258b7dc837ae529e4d945d30014aaf /channels.c | |
parent | 43551527dc1cc9f18561c4816960440de2ce289b (diff) |
- dtucker@cvs.openbsd.org 2010/01/11 01:39:46
[ssh_config channels.c ssh.1 channels.h ssh.c]
Add a 'netcat mode' (ssh -W). This connects stdio on the client to a
single port forward on the server. This allows, for example, using ssh as
a ProxyCommand to route connections via intermediate servers.
bz #1618, man page help from jmc@, ok markus@
Diffstat (limited to 'channels.c')
-rw-r--r-- | channels.c | 31 |
1 files changed, 30 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: channels.c,v 1.300 2010/01/09 23:04:13 dtucker Exp $ */ +/* $OpenBSD: channels.c,v 1.301 2010/01/11 01:39:46 dtucker Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -1217,6 +1217,35 @@ channel_decode_socks5(Channel *c, fd_set *readset, fd_set *writeset) return 1; } +Channel * +channel_connect_stdio_fwd(const char *host_to_connect, u_short port_to_connect) +{ + Channel *c; + int in, out; + + debug("channel_connect_stdio_fwd %s:%d", host_to_connect, + port_to_connect); + + in = dup(STDIN_FILENO); + out = dup(STDOUT_FILENO); + if (in < 0 || out < 0) + fatal("channel_connect_stdio_fwd: dup() in/out failed"); + + c = channel_new("stdio-forward", SSH_CHANNEL_OPENING, in, out, + -1, CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, + 0, "stdio-forward", /*nonblock*/0); + + c->path = xstrdup(host_to_connect); + c->host_port = port_to_connect; + c->listening_port = 0; + c->force_drain = 1; + + channel_register_fds(c, in, out, -1, 0, 1, 0); + port_open_helper(c, "direct-tcpip"); + + return c; +} + /* dynamic port forwarding */ static void channel_pre_dynamic(Channel *c, fd_set *readset, fd_set *writeset) |