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      1 /*	$OpenBSD: ssh.h,v 1.71 2002/06/22 02:00:29 stevesk Exp $	*/
      2 
      3 #ifndef	_SSH_H
      4 #define	_SSH_H
      5 
      6 #ifdef __cplusplus
      7 extern "C" {
      8 #endif
      9 
     10 
     11 /*
     12  * Author: Tatu Ylonen <ylo (at) cs.hut.fi>
     13  * Copyright (c) 1995 Tatu Ylonen <ylo (at) cs.hut.fi>, Espoo, Finland
     14  *                    All rights reserved
     15  *
     16  * As far as I am concerned, the code I have written for this software
     17  * can be used freely for any purpose.  Any derived versions of this
     18  * software must be clearly marked as such, and if the derived work is
     19  * incompatible with the protocol description in the RFC file, it must be
     20  * called by a name other than "ssh" or "Secure Shell".
     21  */
     22 /*
     23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #include <netinet/in.h> /* For struct sockaddr_in */
     28 #include <pwd.h> /* For struct pw */
     29 #include <stdarg.h> /* For va_list */
     30 #include <syslog.h> /* For LOG_AUTH and friends */
     31 #include <sys/socket.h> /* For struct sockaddr_storage */
     32 #include "fake-socket.h" /* For struct sockaddr_storage */
     33 #ifdef HAVE_SYS_SELECT_H
     34 # include <sys/select.h>
     35 #endif
     36 
     37 /* Cipher used for encrypting authentication files. */
     38 #define SSH_AUTHFILE_CIPHER	SSH_CIPHER_3DES
     39 
     40 /* Default port number. */
     41 #define SSH_DEFAULT_PORT	22
     42 
     43 /* Maximum number of TCP/IP ports forwarded per direction. */
     44 #define SSH_MAX_FORWARDS_PER_DIRECTION	100
     45 
     46 /*
     47  * Maximum number of RSA authentication identity files that can be specified
     48  * in configuration files or on the command line.
     49  */
     50 #define SSH_MAX_IDENTITY_FILES		100
     51 
     52 /*
     53  * Major protocol version.  Different version indicates major incompatibility
     54  * that prevents communication.
     55  *
     56  * Minor protocol version.  Different version indicates minor incompatibility
     57  * that does not prevent interoperation.
     58  */
     59 #define PROTOCOL_MAJOR_1	1
     60 #define PROTOCOL_MINOR_1	5
     61 
     62 /* We support both SSH1 and SSH2 */
     63 #define PROTOCOL_MAJOR_2	2
     64 #define PROTOCOL_MINOR_2	0
     65 
     66 /*
     67  * Name for the service.  The port named by this service overrides the
     68  * default port if present.
     69  */
     70 #define SSH_SERVICE_NAME	"ssh"
     71 
     72 /*
     73  * Name of the environment variable containing the process ID of the
     74  * authentication agent.
     75  */
     76 #define SSH_AGENTPID_ENV_NAME	"SSH_AGENT_PID"
     77 
     78 /*
     79  * Name of the environment variable containing the pathname of the
     80  * authentication socket.
     81  */
     82 #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
     83 
     84 /*
     85  * Environment variable for overwriting the default location of askpass
     86  */
     87 #define SSH_ASKPASS_ENV		"SSH_ASKPASS"
     88 
     89 /*
     90  * Force host key length and server key length to differ by at least this
     91  * many bits.  This is to make double encryption with rsaref work.
     92  */
     93 #define SSH_KEY_BITS_RESERVED		128
     94 
     95 /*
     96  * Length of the session key in bytes.  (Specified as 256 bits in the
     97  * protocol.)
     98  */
     99 #define SSH_SESSION_KEY_LENGTH		32
    100 
    101 /* Name of Kerberos service for SSH to use. */
    102 #define KRB4_SERVICE_NAME		"rcmd"
    103 
    104 /* Used to identify ``EscapeChar none'' */
    105 #define SSH_ESCAPECHAR_NONE		-2
    106 
    107 /*
    108  * unprivileged user when UsePrivilegeSeparation=yes;
    109  * sshd will change its privileges to this user and its
    110  * primary group.
    111  */
    112 #ifndef SSH_PRIVSEP_USER
    113 #define SSH_PRIVSEP_USER		"sshd"
    114 #endif
    115 
    116 /* Minimum modulus size (n) for RSA keys. */
    117 #define SSH_RSA_MINIMUM_MODULUS_SIZE	768
    118 
    119 /* Listen backlog for sshd, ssh-agent and forwarding sockets */
    120 #define SSH_LISTEN_BACKLOG		128
    121 
    122 /*
    123  * Do not display banner when in remote command mode only. Note that RFC 4254
    124  * uses "exec" as a mode name for the channel opened for the execution of the
    125  * given command.
    126  */
    127 #define	SSH_NO_BANNER_IN_EXEC_MODE	2
    128 
    129 #ifdef __cplusplus
    130 }
    131 #endif
    132 
    133 #endif /* _SSH_H */
    134