Some notable changes, from upstream's release notes: - sshd(8): Remove support for obsolete "host/port" syntax. - ssh(1): When prompting whether to record a new host key, accept the key fingerprint as a synonym for "yes". - ssh-keygen(1): when acting as a CA and signing certificates with an RSA key, default to using the rsa-sha2-512 signature algorithm. - ssh(1), sshd(8), ssh-keygen(1): this release removes the "ssh-rsa" (RSA/SHA1) algorithm from those accepted for certificate signatures. - ssh-sk-helper(8): this is a new binary. It is used by the FIDO/U2F support to provide address-space isolation for token middleware libraries (including the internal one). - ssh(1): this release enables UpdateHostkeys by default subject to some conservative preconditions. - scp(1): this release changes the behaviour of remote to remote copies (e.g. "scp host-a:/path host-b:") to transfer through the local host by default. - scp(1): experimental support for transfers using the SFTP protocol as a replacement for the venerable SCP/RCP protocol that it has traditionally used. Additional integration work is needed to support FIDO/U2F in the base system. Deprecation Notice ------------------ OpenSSH will disable the ssh-rsa signature scheme by default in the next release. Reviewed by: imp MFC after: 1 month Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D29985
175 lines
5.6 KiB
C
175 lines
5.6 KiB
C
/* $OpenBSD: ssh2.h,v 1.19 2020/11/19 23:05:05 dtucker Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000 Markus Friedl. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* RFC4251:
|
|
*
|
|
* Transport layer protocol:
|
|
*
|
|
* 1-19 Transport layer generic (e.g. disconnect, ignore, debug,
|
|
* etc)
|
|
* 20-29 Algorithm negotiation
|
|
* 30-49 Key exchange method specific (numbers can be reused for
|
|
* different authentication methods)
|
|
*
|
|
* User authentication protocol:
|
|
*
|
|
* 50-59 User authentication generic
|
|
* 60-79 User authentication method specific (numbers can be reused
|
|
* for different authentication methods)
|
|
*
|
|
* Connection protocol:
|
|
*
|
|
* 80-89 Connection protocol generic
|
|
* 90-127 Channel related messages
|
|
*
|
|
* Reserved for client protocols:
|
|
*
|
|
* 128-191 Reserved
|
|
*
|
|
* Local extensions:
|
|
*
|
|
* 192-255 Local extensions
|
|
*/
|
|
|
|
/* special marker for no message */
|
|
|
|
#define SSH_MSG_NONE 0
|
|
|
|
/* ranges */
|
|
|
|
#define SSH2_MSG_TRANSPORT_MIN 1
|
|
#define SSH2_MSG_TRANSPORT_MAX 49
|
|
#define SSH2_MSG_USERAUTH_MIN 50
|
|
#define SSH2_MSG_USERAUTH_MAX 79
|
|
#define SSH2_MSG_USERAUTH_PER_METHOD_MIN 60
|
|
#define SSH2_MSG_USERAUTH_PER_METHOD_MAX SSH2_MSG_USERAUTH_MAX
|
|
#define SSH2_MSG_CONNECTION_MIN 80
|
|
#define SSH2_MSG_CONNECTION_MAX 127
|
|
#define SSH2_MSG_RESERVED_MIN 128
|
|
#define SSH2_MSG_RESERVED_MAX 191
|
|
#define SSH2_MSG_LOCAL_MIN 192
|
|
#define SSH2_MSG_LOCAL_MAX 255
|
|
#define SSH2_MSG_MIN 1
|
|
#define SSH2_MSG_MAX 255
|
|
|
|
/* transport layer: generic */
|
|
|
|
#define SSH2_MSG_DISCONNECT 1
|
|
#define SSH2_MSG_IGNORE 2
|
|
#define SSH2_MSG_UNIMPLEMENTED 3
|
|
#define SSH2_MSG_DEBUG 4
|
|
#define SSH2_MSG_SERVICE_REQUEST 5
|
|
#define SSH2_MSG_SERVICE_ACCEPT 6
|
|
#define SSH2_MSG_EXT_INFO 7
|
|
|
|
/* transport layer: alg negotiation */
|
|
|
|
#define SSH2_MSG_KEXINIT 20
|
|
#define SSH2_MSG_NEWKEYS 21
|
|
|
|
/* transport layer: kex specific messages, can be reused */
|
|
|
|
#define SSH2_MSG_KEXDH_INIT 30
|
|
#define SSH2_MSG_KEXDH_REPLY 31
|
|
|
|
/* dh-group-exchange */
|
|
#define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30
|
|
#define SSH2_MSG_KEX_DH_GEX_GROUP 31
|
|
#define SSH2_MSG_KEX_DH_GEX_INIT 32
|
|
#define SSH2_MSG_KEX_DH_GEX_REPLY 33
|
|
#define SSH2_MSG_KEX_DH_GEX_REQUEST 34
|
|
|
|
/* ecdh */
|
|
#define SSH2_MSG_KEX_ECDH_INIT 30
|
|
#define SSH2_MSG_KEX_ECDH_REPLY 31
|
|
|
|
/* user authentication: generic */
|
|
|
|
#define SSH2_MSG_USERAUTH_REQUEST 50
|
|
#define SSH2_MSG_USERAUTH_FAILURE 51
|
|
#define SSH2_MSG_USERAUTH_SUCCESS 52
|
|
#define SSH2_MSG_USERAUTH_BANNER 53
|
|
|
|
/* user authentication: method specific, can be reused */
|
|
|
|
#define SSH2_MSG_USERAUTH_PK_OK 60
|
|
#define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60
|
|
#define SSH2_MSG_USERAUTH_INFO_REQUEST 60
|
|
#define SSH2_MSG_USERAUTH_INFO_RESPONSE 61
|
|
|
|
/* connection protocol: generic */
|
|
|
|
#define SSH2_MSG_GLOBAL_REQUEST 80
|
|
#define SSH2_MSG_REQUEST_SUCCESS 81
|
|
#define SSH2_MSG_REQUEST_FAILURE 82
|
|
|
|
/* channel related messages */
|
|
|
|
#define SSH2_MSG_CHANNEL_OPEN 90
|
|
#define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91
|
|
#define SSH2_MSG_CHANNEL_OPEN_FAILURE 92
|
|
#define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93
|
|
#define SSH2_MSG_CHANNEL_DATA 94
|
|
#define SSH2_MSG_CHANNEL_EXTENDED_DATA 95
|
|
#define SSH2_MSG_CHANNEL_EOF 96
|
|
#define SSH2_MSG_CHANNEL_CLOSE 97
|
|
#define SSH2_MSG_CHANNEL_REQUEST 98
|
|
#define SSH2_MSG_CHANNEL_SUCCESS 99
|
|
#define SSH2_MSG_CHANNEL_FAILURE 100
|
|
|
|
/* disconnect reason code */
|
|
|
|
#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
|
|
#define SSH2_DISCONNECT_PROTOCOL_ERROR 2
|
|
#define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3
|
|
#define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4
|
|
#define SSH2_DISCONNECT_RESERVED 4
|
|
#define SSH2_DISCONNECT_MAC_ERROR 5
|
|
#define SSH2_DISCONNECT_COMPRESSION_ERROR 6
|
|
#define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7
|
|
#define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
|
|
#define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
|
|
#define SSH2_DISCONNECT_CONNECTION_LOST 10
|
|
#define SSH2_DISCONNECT_BY_APPLICATION 11
|
|
#define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12
|
|
#define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13
|
|
#define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14
|
|
#define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15
|
|
|
|
/* misc */
|
|
|
|
#define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1
|
|
#define SSH2_OPEN_CONNECT_FAILED 2
|
|
#define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3
|
|
#define SSH2_OPEN_RESOURCE_SHORTAGE 4
|
|
|
|
#define SSH2_EXTENDED_DATA_STDERR 1
|
|
|
|
/* Certificate types for OpenSSH certificate keys extension */
|
|
#define SSH2_CERT_TYPE_USER 1
|
|
#define SSH2_CERT_TYPE_HOST 2
|