--- a/chansession.h	Tue Jun 01 04:20:12 2004 +0000
+++ b/chansession.h	Tue Jun 01 10:48:46 2004 +0000
@@ -68,16 +68,15 @@
 };
 
 
-void newchansess(struct Channel * channel);
 void chansessionrequest(struct Channel * channel);
-void closechansess(struct Channel * channel);
-void svr_chansessinitialise();
 void send_msg_chansess_exitstatus(struct Channel * channel,
 		struct ChanSess * chansess);
 void send_msg_chansess_exitsignal(struct Channel * channel,
 		struct ChanSess * chansess);
 void addnewvar(const char* param, const char* var);
 
+void svr_chansessinitialise();
+extern const struct ChanType svrchansess;
 
 struct SigMap {
 	int signal;

--- a/common-channel.c	Tue Jun 01 04:20:12 2004 +0000
+++ b/common-channel.c	Tue Jun 01 10:48:46 2004 +0000
@@ -61,7 +61,7 @@
 #define FD_CLOSED (-1)
 
 /* Initialise all the channels */
-void chaninitialise(struct ChanType *chantypes[]) {
+void chaninitialise(const struct ChanType *chantypes[]) {
 
 	/* may as well create space for a single channel */
 	ses.channels = (struct Channel**)m_malloc(sizeof(struct Channel*));
@@ -737,7 +737,7 @@
 	unsigned int typelen;
 	unsigned int remotechan, transwindow, transmaxpacket;
 	struct Channel *channel;
-	struct ChanType *chantype;
+	const struct ChanType *chantype;
 	unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
 	int ret;
 
@@ -775,14 +775,16 @@
 	channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
 
 	if (channel == NULL) {
+		TRACE(("newchannel returned NULL"));
 		goto failure;
 	}
 
 	if (channel->type->inithandler) {
 		ret = channel->type->inithandler(channel);
-		if (ret >= 0) {
+		if (ret > 0) {
 			errtype = ret;
 			deletechannel(channel);
+			TRACE(("inithandler returned failure %d", ret));
 			goto failure;
 		}
 	}
@@ -810,6 +812,7 @@
 	goto cleanup;
 
 failure:
+	TRACE(("recv_msg_channel_open failure"));
 	send_msg_channel_open_failure(remotechan, errtype, "", "");
 
 cleanup:

--- a/common-session.c	Tue Jun 01 04:20:12 2004 +0000
+++ b/common-session.c	Tue Jun 01 10:48:46 2004 +0000
@@ -106,6 +106,8 @@
 	ses.dh_K = NULL;
 	ses.remoteident = NULL;
 
+	ses.chantypes = NULL;
+
 
 	TRACE(("leave session_init"));
 }

--- a/debug.h	Tue Jun 01 04:20:12 2004 +0000
+++ b/debug.h	Tue Jun 01 10:48:46 2004 +0000
@@ -34,7 +34,7 @@
 /* #define DEBUG_VALGRIND */
 
 /* Define this to print trace statements - very verbose */
-/* #define DEBUG_TRACE */
+#define DEBUG_TRACE
 
 /* All functions writing to the cleartext payload buffer call
  * CHECKCLEARTOWRITE() before writing. This is only really useful if you're

--- a/session.h	Tue Jun 01 04:20:12 2004 +0000
+++ b/session.h	Tue Jun 01 10:48:46 2004 +0000
@@ -134,7 +134,7 @@
 	/* Channel related */
 	struct Channel ** channels; /* these pointers may be null */
 	unsigned int chansize; /* the number of Channel*s allocated for channels */
-	struct ChanType **chantypes; /* The valid channel types */
+	const struct ChanType **chantypes; /* The valid channel types */
 
 	
 	/* TCP forwarding - where manage listeners */

--- a/svr-chansession.c	Tue Jun 01 04:20:12 2004 +0000
+++ b/svr-chansession.c	Tue Jun 01 10:48:46 2004 +0000
@@ -50,7 +50,7 @@
 static void addchildpid(struct ChanSess *chansess, pid_t pid);
 static void sesssigchild_handler(int val);
 static void closechansess(struct Channel *channel);
-static void newchansess(struct Channel *channel);
+static int newchansess(struct Channel *channel);
 static void chansessionrequest(struct Channel *channel);
 
 static void send_exitsignalstatus(struct Channel *channel);
@@ -205,7 +205,7 @@
 }
 
 /* set up a session channel */
-static void newchansess(struct Channel *channel) {
+static int newchansess(struct Channel *channel) {
 
 	struct ChanSess *chansess;
 
@@ -241,6 +241,8 @@
 	chansess->agentdir = NULL;
 #endif
 
+	return 0;
+
 }
 
 /* clean a session channel */
@@ -310,8 +312,6 @@
 
 	TRACE(("enter chansessionrequest"));
 
-	assert(channel->type == CHANNEL_ID_SESSION);
-
 	type = buf_getstring(ses.payload, &typelen);
 	wantreply = buf_getbyte(ses.payload);
 

--- a/svr-session.c	Tue Jun 01 04:20:12 2004 +0000
+++ b/svr-session.c	Tue Jun 01 10:48:46 2004 +0000
@@ -40,6 +40,12 @@
 
 struct serversession svr_ses;
 
+const struct ChanType *chantypes[] = {
+	&svrchansess,
+	NULL /* Null termination is mandatory. */
+};
+
+
 void svr_session(int sock, runopts *opts, int childpipe, 
 		struct sockaddr* remoteaddr) {
 
@@ -56,6 +62,7 @@
 	/* Initialise server specific parts of the session */
 	svr_ses.childpipe = childpipe;
 	authinitialise();
+	chaninitialise(chantypes);
 	svr_chansessinitialise();
 
 	if (gettimeofday(&timeout, 0) < 0) {