1 files changed, 36 insertions, 1 deletions

diff --git a/channels.c b/channels.c
index a1aa937ae..f4f2c4942 100644
--- a/channels.c
+++ b/channels.c
@@ -40,7 +40,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: channels.c,v 1.106 2001/04/11 13:56:13 markus Exp $");
+RCSID("$OpenBSD: channels.c,v 1.107 2001/04/13 22:46:52 beck Exp $");
 
 #include <openssl/rsa.h>
 #include <openssl/dsa.h>
@@ -1843,6 +1843,41 @@ channel_still_open()
         return 0;
 }
 
+/* Returns the id of an open channel suitable for keepaliving */
+
+int
+channel_find_open()
+{
+        u_int i;
+        for (i = 0; i < channels_alloc; i++)
+                switch (channels[i].type) {
+                case SSH_CHANNEL_CLOSED:
+                        continue;
+                case SSH_CHANNEL_LARVAL:
+                case SSH_CHANNEL_DYNAMIC:
+                case SSH_CHANNEL_AUTH_SOCKET:
+                case SSH_CHANNEL_CONNECTING:    /* XXX ??? */
+                case SSH_CHANNEL_FREE:
+                case SSH_CHANNEL_X11_LISTENER:
+                case SSH_CHANNEL_PORT_LISTENER:
+                case SSH_CHANNEL_RPORT_LISTENER:
+                case SSH_CHANNEL_OPENING:
+                case SSH_CHANNEL_OPEN:
+                case SSH_CHANNEL_X11_OPEN:
+                        return i;
+                case SSH_CHANNEL_INPUT_DRAINING:
+                case SSH_CHANNEL_OUTPUT_DRAINING:
+                        if (!compat13)
+                                fatal("cannot happen: OUT_DRAIN");
+                        return i;
+                default:
+                        fatal("channel_find_open: bad channel type %d", channels[i].type);
+                        /* NOTREACHED */
+                }
+        return -1;
+}
+
+
 /*
  * Returns a message describing the currently open forwarded connections,
  * suitable for sending to the client.  The message contains crlf pairs for