/* $OpenBSD: ssh1.h,v 1.7 2016/05/04 14:22:33 markus Exp $ */

/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 *
 * As far as I am concerned, the code I have written for this software
 * can be used freely for any purpose.  Any derived versions of this
 * software must be clearly marked as such, and if the derived work is
 * incompatible with the protocol description in the RFC file, it must be
 * called by a name other than "ssh" or "Secure Shell".
 */

/*
 * Definition of message types.  New values can be added, but old values
 * should not be removed or without careful consideration of the consequences
 * for compatibility.  The maximum value is 254; value 255 is reserved for
 * future extension.
 */
/* Ranges */
#define SSH_MSG_MIN				1
#define SSH_MSG_MAX				254
/* Message name */			/* msg code */	/* arguments */
#define SSH_MSG_DISCONNECT			1	/* cause (string) */
#define SSH_SMSG_PUBLIC_KEY			2	/* ck,msk,srvk,hostk */
#define SSH_CMSG_SESSION_KEY			3	/* key (BIGNUM) */
#define SSH_CMSG_USER				4	/* user (string) */
#define SSH_CMSG_AUTH_RHOSTS			5	/* user (string) */
#define SSH_CMSG_AUTH_RSA			6	/* modulus (BIGNUM) */
#define SSH_SMSG_AUTH_RSA_CHALLENGE		7	/* int (BIGNUM) */
#define SSH_CMSG_AUTH_RSA_RESPONSE		8	/* int (BIGNUM) */
#define SSH_CMSG_AUTH_PASSWORD			9	/* pass (string) */
#define SSH_CMSG_REQUEST_PTY			10	/* TERM, tty modes */
#define SSH_CMSG_WINDOW_SIZE			11	/* row,col,xpix,ypix */
#define SSH_CMSG_EXEC_SHELL			12	/* */
#define SSH_CMSG_EXEC_CMD			13	/* cmd (string) */
#define SSH_SMSG_SUCCESS			14	/* */
#define SSH_SMSG_FAILURE			15	/* */
#define SSH_CMSG_STDIN_DATA			16	/* data (string) */
#define SSH_SMSG_STDOUT_DATA			17	/* data (string) */
#define SSH_SMSG_STDERR_DATA			18	/* data (string) */
#define SSH_CMSG_EOF				19	/* */
#define SSH_SMSG_EXITSTATUS			20	/* status (int) */
#define SSH_MSG_CHANNEL_OPEN_CONFIRMATION	21	/* channel (int) */
#define SSH_MSG_CHANNEL_OPEN_FAILURE		22	/* channel (int) */
#define SSH_MSG_CHANNEL_DATA			23	/* ch,data (int,str) */
#define SSH_MSG_CHANNEL_CLOSE			24	/* channel (int) */
#define SSH_MSG_CHANNEL_CLOSE_CONFIRMATION	25	/* channel (int) */
/*      SSH_CMSG_X11_REQUEST_FORWARDING		26	   OBSOLETE */
#define SSH_SMSG_X11_OPEN			27	/* channel (int) */
#define SSH_CMSG_PORT_FORWARD_REQUEST		28	/* p,host,hp (i,s,i) */
#define SSH_MSG_PORT_OPEN			29	/* ch,h,p (i,s,i) */
#define SSH_CMSG_AGENT_REQUEST_FORWARDING	30	/* */
#define SSH_SMSG_AGENT_OPEN			31	/* port (int) */
#define SSH_MSG_IGNORE				32	/* string */
#define SSH_CMSG_EXIT_CONFIRMATION		33	/* */
#define SSH_CMSG_X11_REQUEST_FORWARDING		34	/* proto,data (s,s) */
#define SSH_CMSG_AUTH_RHOSTS_RSA		35	/* user,mod (s,mpi) */
#define SSH_MSG_DEBUG				36	/* string */
#define SSH_CMSG_REQUEST_COMPRESSION		37	/* level 1-9 (int) */
#define SSH_CMSG_MAX_PACKET_SIZE		38	/* size 4k-1024k (int) */
#define SSH_CMSG_AUTH_TIS			39	/* we use this for s/key */
#define SSH_SMSG_AUTH_TIS_CHALLENGE		40	/* challenge (string) */
#define SSH_CMSG_AUTH_TIS_RESPONSE		41	/* response (string) */
#define SSH_CMSG_AUTH_KERBEROS			42	/* (KTEXT) */
#define SSH_SMSG_AUTH_KERBEROS_RESPONSE		43	/* (KTEXT) */
#define SSH_CMSG_HAVE_KERBEROS_TGT		44	/* credentials (s) */
#define SSH_CMSG_HAVE_AFS_TOKEN			65	/* token (s) */

/* protocol version 1.5 overloads some version 1.3 message types */
#define SSH_MSG_CHANNEL_INPUT_EOF	SSH_MSG_CHANNEL_CLOSE
#define SSH_MSG_CHANNEL_OUTPUT_CLOSE	SSH_MSG_CHANNEL_CLOSE_CONFIRMATION

/*
 * Authentication methods.  New types can be added, but old types should not
 * be removed for compatibility.  The maximum allowed value is 31.
 */
#define SSH_AUTH_RHOSTS		1
#define SSH_AUTH_RSA		2
#define SSH_AUTH_PASSWORD	3
#define SSH_AUTH_RHOSTS_RSA	4
#define SSH_AUTH_TIS		5
#define SSH_AUTH_KERBEROS	6
#define SSH_PASS_KERBEROS_TGT	7
				/* 8 to 15 are reserved */
#define SSH_PASS_AFS_TOKEN	21

/* Protocol flags.  These are bit masks. */
#define SSH_PROTOFLAG_SCREEN_NUMBER	1	/* X11 forwarding includes screen */
#define SSH_PROTOFLAG_HOST_IN_FWD_OPEN	2	/* forwarding opens contain host */