--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/session.h	Tue Jun 01 02:46:09 2004 +0000
@@ -0,0 +1,176 @@
+/*
+ * Dropbear - a SSH2 server
+ * 
+ * Copyright (c) 2002,2003 Matt Johnston
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE. */
+
+#ifndef _SESSION_H_
+#define _SESSION_H_
+
+#include "includes.h"
+#include "buffer.h"
+#include "signkey.h"
+#include "kex.h"
+#include "auth.h"
+#include "channel.h"
+#include "queue.h"
+#include "runopts.h"
+#include "remotetcpfwd.h"
+
+extern int sessinitdone; /* Is set to 0 somewhere */
+extern int exitflag;
+
+void common_session_init(int sock, runopts *opts);
+void common_session_cleanup();
+void checktimeouts();
+void session_identification();
+
+extern void(*session_remoteclosed)();
+
+/* Server */
+void svr_session(int sock, runopts *opts, int childpipe,
+		struct sockaddr *remoteaddr);
+
+struct key_context {
+
+	const struct dropbear_cipher *recv_algo_crypt; /* NULL for none */
+	const struct dropbear_cipher *trans_algo_crypt; /* NULL for none */
+	const struct dropbear_hash *recv_algo_mac; /* NULL for none */
+	const struct dropbear_hash *trans_algo_mac; /* NULL for none */
+	char algo_kex;
+	char algo_hostkey;
+
+	char recv_algo_comp; /* compression */
+	char trans_algo_comp;
+#ifndef DISABLE_ZLIB
+	z_streamp recv_zstream;
+	z_streamp trans_zstream;
+#endif
+
+	/* actual keys */
+	symmetric_CBC recv_symmetric_struct;
+	symmetric_CBC trans_symmetric_struct;
+	unsigned char recvmackey[MAX_MAC_KEY];
+	unsigned char transmackey[MAX_MAC_KEY];
+
+};
+
+struct sshsession {
+
+	/* Is it a client or server? */
+	unsigned char isserver;
+
+	runopts * opts; /* runtime options, incl hostkey, banner etc */
+
+	long connecttimeout; /* time to disconnect if we have a timeout (for
+							userauth etc), or 0 for no timeout */
+
+	int sock;
+
+	struct sockaddr *remoteaddr;
+	unsigned char *remotehost; /* the peer hostname */
+	unsigned char *remoteident;
+
+	int maxfd; /* the maximum file descriptor to check with select() */
+
+
+	/* Packet buffers/values etc */
+	buffer *writepayload; /* Unencrypted payload to write - this is used
+							 throughout the code, as handlers fill out this
+							 buffer with the packet to send. */
+	struct Queue writequeue; /* A queue of encrypted packets to send */
+	buffer *readbuf; /* Encrypted */
+	buffer *decryptreadbuf; /* Post-decryption */
+	buffer *payload; /* Post-decompression, the actual SSH packet */
+	unsigned int transseq, recvseq; /* Sequence IDs */
+
+	/* Packet-handling flags */
+	unsigned dataallowed : 1; /* whether we can send data packets or we are in
+								 the middle of a KEX or something */
+
+	unsigned char expecting; /* byte indicating what packet we expect next, 
+								or 0x00 for any */
+
+	unsigned char ignorenext; /* whether to ignore the next packet,
+								 used for kex_follows stuff */
+	
+
+
+	/* KEX/encryption related */
+	struct KEXState kexstate;
+	struct key_context *keys;
+	struct key_context *newkeys;
+	unsigned char *session_id; /* this is the hash from the first kex */
+	/* The below are used temorarily during kex, are freed after use */
+	mp_int * dh_K; /* SSH_MSG_KEXDH_REPLY and sending SSH_MSH_NEWKEYS */
+	unsigned char hash[SHA1_HASH_SIZE]; /* the hash*/
+	buffer* kexhashbuf; /* session hash buffer calculated from various packets*/
+	buffer* transkexinit; /* the kexinit packet we send should be kept so we
+							 can add it to the hash when generating keys */
+
+
+
+	/* 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 */
+
+	
+	/* TCP forwarding - where manage listeners */
+#ifndef DISABLE_REMOTETCPFWD
+	struct TCPListener ** tcplisteners;
+	unsigned int tcplistensize;
+#endif
+
+};
+
+struct serversession {
+
+	/* Server specific options */
+	int childpipe; /* kept open until we successfully authenticate */
+	/* userauth */
+	struct AuthState authstate;
+
+	struct ChildPid * childpids; /* array of mappings childpid<->channel */
+	unsigned int childpidsize;
+
+};
+
+
+
+struct clientsession {
+
+	int something; /* XXX */
+
+};
+
+/* Global structs storing the state */
+extern struct sshsession ses;
+
+#ifdef DROPBEAR_SERVER
+extern struct serversession svr_ses;
+#endif /* DROPBEAR_SERVER */
+
+#ifdef DROPBEAR_CLIENT
+extern struct serversession cli_ses;
+#endif /* DROPBEAR_CLIENT */
+
+#endif /* _SESSION_H_ */