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IABSD.fr/src/usr.bin/ssh/ssh.h

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  • Author : djm
    Date : 2020-07-14 23:57:01
    Hash : 0ae95be1
    Message : allow some additional control over the use of ssh-askpass via $SSH_ASKPASS_REQUIRE, including force-enable/disable. bz#69 ok markus@

  • usr.bin/ssh/ssh.h
  • /* $OpenBSD: ssh.h,v 1.90 2020/07/14 23:57:01 djm 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".
     */
    
    /* Cipher used for encrypting authentication files. */
    #define SSH_AUTHFILE_CIPHER	SSH_CIPHER_3DES
    
    /* Default port number. */
    #define SSH_DEFAULT_PORT	22
    
    /*
     * Maximum number of certificate files that can be specified
     * in configuration files or on the command line.
     */
    #define SSH_MAX_CERTIFICATE_FILES	100
    
    /*
     * Maximum number of RSA authentication identity files that can be specified
     * in configuration files or on the command line.
     */
    #define SSH_MAX_IDENTITY_FILES		100
    
    /*
     * Major protocol version.  Different version indicates major incompatibility
     * that prevents communication.
     *
     * Minor protocol version.  Different version indicates minor incompatibility
     * that does not prevent interoperation.
     */
    #define PROTOCOL_MAJOR_1	1
    #define PROTOCOL_MINOR_1	5
    
    /* We support only SSH2 */
    #define PROTOCOL_MAJOR_2	2
    #define PROTOCOL_MINOR_2	0
    
    /*
     * Name for the service.  The port named by this service overrides the
     * default port if present.
     */
    #define SSH_SERVICE_NAME	"ssh"
    
    /*
     * Name of the environment variable containing the process ID of the
     * authentication agent.
     */
    #define SSH_AGENTPID_ENV_NAME	"SSH_AGENT_PID"
    
    /*
     * Name of the environment variable containing the pathname of the
     * authentication socket.
     */
    #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
    
    /*
     * Environment variable for overwriting the default location of askpass
     */
    #define SSH_ASKPASS_ENV		"SSH_ASKPASS"
    
    /*
     * Environment variable to control whether or not askpass is used.
     */
    #define SSH_ASKPASS_REQUIRE_ENV		"SSH_ASKPASS_REQUIRE"
    
    /*
     * Force host key length and server key length to differ by at least this
     * many bits.  This is to make double encryption with rsaref work.
     */
    #define SSH_KEY_BITS_RESERVED		128
    
    /*
     * Length of the session key in bytes.  (Specified as 256 bits in the
     * protocol.)
     */
    #define SSH_SESSION_KEY_LENGTH		32
    
    /* Used to identify ``EscapeChar none'' */
    #define SSH_ESCAPECHAR_NONE		-2
    
    /*
     * unprivileged user when UsePrivilegeSeparation=yes;
     * sshd will change its privileges to this user and its
     * primary group.
     */
    #define SSH_PRIVSEP_USER		"sshd"
    
    /* Listen backlog for sshd, ssh-agent and forwarding sockets */
    #define SSH_LISTEN_BACKLOG		128
    
    /* Limits for banner exchange */
    #define SSH_MAX_BANNER_LEN		8192
    #define SSH_MAX_PRE_BANNER_LINES	1024