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317a38ab65
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 (cherry picked from commit19261079b7) (cherry picked from commitf448c3ed4a) (cherry picked from commit1f290c707a) (cherry picked from commit0f9bafdfc3) (cherry picked from commitadb56e58e8) (cherry picked from commit576b58108c) (cherry picked from commit1c99af1ebe) (cherry picked from commit87152f3405) (cherry picked from commit172fa4aa75)
174 lines
5.6 KiB
C
174 lines
5.6 KiB
C
/* $OpenBSD: ssh2.h,v 1.19 2020/11/19 23:05:05 dtucker Exp $ */
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/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* RFC4251:
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*
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* Transport layer protocol:
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*
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* 1-19 Transport layer generic (e.g. disconnect, ignore, debug,
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* etc)
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* 20-29 Algorithm negotiation
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* 30-49 Key exchange method specific (numbers can be reused for
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* different authentication methods)
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*
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* User authentication protocol:
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*
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* 50-59 User authentication generic
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* 60-79 User authentication method specific (numbers can be reused
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* for different authentication methods)
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*
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* Connection protocol:
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*
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* 80-89 Connection protocol generic
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* 90-127 Channel related messages
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*
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* Reserved for client protocols:
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*
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* 128-191 Reserved
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*
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* Local extensions:
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*
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* 192-255 Local extensions
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*/
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/* special marker for no message */
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#define SSH_MSG_NONE 0
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/* ranges */
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#define SSH2_MSG_TRANSPORT_MIN 1
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#define SSH2_MSG_TRANSPORT_MAX 49
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#define SSH2_MSG_USERAUTH_MIN 50
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#define SSH2_MSG_USERAUTH_MAX 79
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#define SSH2_MSG_USERAUTH_PER_METHOD_MIN 60
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#define SSH2_MSG_USERAUTH_PER_METHOD_MAX SSH2_MSG_USERAUTH_MAX
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#define SSH2_MSG_CONNECTION_MIN 80
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#define SSH2_MSG_CONNECTION_MAX 127
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#define SSH2_MSG_RESERVED_MIN 128
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#define SSH2_MSG_RESERVED_MAX 191
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#define SSH2_MSG_LOCAL_MIN 192
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#define SSH2_MSG_LOCAL_MAX 255
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#define SSH2_MSG_MIN 1
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#define SSH2_MSG_MAX 255
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/* transport layer: generic */
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#define SSH2_MSG_DISCONNECT 1
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#define SSH2_MSG_IGNORE 2
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#define SSH2_MSG_UNIMPLEMENTED 3
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#define SSH2_MSG_DEBUG 4
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#define SSH2_MSG_SERVICE_REQUEST 5
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#define SSH2_MSG_SERVICE_ACCEPT 6
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#define SSH2_MSG_EXT_INFO 7
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/* transport layer: alg negotiation */
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#define SSH2_MSG_KEXINIT 20
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#define SSH2_MSG_NEWKEYS 21
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/* transport layer: kex specific messages, can be reused */
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#define SSH2_MSG_KEXDH_INIT 30
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#define SSH2_MSG_KEXDH_REPLY 31
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/* dh-group-exchange */
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#define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30
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#define SSH2_MSG_KEX_DH_GEX_GROUP 31
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#define SSH2_MSG_KEX_DH_GEX_INIT 32
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#define SSH2_MSG_KEX_DH_GEX_REPLY 33
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#define SSH2_MSG_KEX_DH_GEX_REQUEST 34
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/* ecdh */
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#define SSH2_MSG_KEX_ECDH_INIT 30
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#define SSH2_MSG_KEX_ECDH_REPLY 31
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/* user authentication: generic */
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#define SSH2_MSG_USERAUTH_REQUEST 50
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#define SSH2_MSG_USERAUTH_FAILURE 51
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#define SSH2_MSG_USERAUTH_SUCCESS 52
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#define SSH2_MSG_USERAUTH_BANNER 53
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/* user authentication: method specific, can be reused */
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#define SSH2_MSG_USERAUTH_PK_OK 60
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#define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60
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#define SSH2_MSG_USERAUTH_INFO_REQUEST 60
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#define SSH2_MSG_USERAUTH_INFO_RESPONSE 61
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/* connection protocol: generic */
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#define SSH2_MSG_GLOBAL_REQUEST 80
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#define SSH2_MSG_REQUEST_SUCCESS 81
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#define SSH2_MSG_REQUEST_FAILURE 82
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/* channel related messages */
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#define SSH2_MSG_CHANNEL_OPEN 90
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#define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91
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#define SSH2_MSG_CHANNEL_OPEN_FAILURE 92
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#define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93
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#define SSH2_MSG_CHANNEL_DATA 94
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#define SSH2_MSG_CHANNEL_EXTENDED_DATA 95
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#define SSH2_MSG_CHANNEL_EOF 96
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#define SSH2_MSG_CHANNEL_CLOSE 97
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#define SSH2_MSG_CHANNEL_REQUEST 98
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#define SSH2_MSG_CHANNEL_SUCCESS 99
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#define SSH2_MSG_CHANNEL_FAILURE 100
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/* disconnect reason code */
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#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
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#define SSH2_DISCONNECT_PROTOCOL_ERROR 2
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#define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3
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#define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4
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#define SSH2_DISCONNECT_RESERVED 4
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#define SSH2_DISCONNECT_MAC_ERROR 5
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#define SSH2_DISCONNECT_COMPRESSION_ERROR 6
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#define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7
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#define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
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#define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
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#define SSH2_DISCONNECT_CONNECTION_LOST 10
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#define SSH2_DISCONNECT_BY_APPLICATION 11
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#define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12
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#define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13
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#define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14
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#define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15
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/* misc */
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#define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1
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#define SSH2_OPEN_CONNECT_FAILED 2
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#define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3
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#define SSH2_OPEN_RESOURCE_SHORTAGE 4
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#define SSH2_EXTENDED_DATA_STDERR 1
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/* Certificate types for OpenSSH certificate keys extension */
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#define SSH2_CERT_TYPE_USER 1
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#define SSH2_CERT_TYPE_HOST 2
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