1 /* $NetBSD: ssh2.h,v 1.13 2021/03/05 17:47:16 christos Exp $ */ 2 /* $OpenBSD: ssh2.h,v 1.19 2020/11/19 23:05:05 dtucker Exp $ */ 3 4 /* 5 * Copyright (c) 2000 Markus Friedl. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * RFC4251: 30 * 31 * Transport layer protocol: 32 * 33 * 1-19 Transport layer generic (e.g. disconnect, ignore, debug, 34 * etc) 35 * 20-29 Algorithm negotiation 36 * 30-49 Key exchange method specific (numbers can be reused for 37 * different authentication methods) 38 * 39 * User authentication protocol: 40 * 41 * 50-59 User authentication generic 42 * 60-79 User authentication method specific (numbers can be reused 43 * for different authentication methods) 44 * 45 * Connection protocol: 46 * 47 * 80-89 Connection protocol generic 48 * 90-127 Channel related messages 49 * 50 * Reserved for client protocols: 51 * 52 * 128-191 Reserved 53 * 54 * Local extensions: 55 * 56 * 192-255 Local extensions 57 */ 58 59 /* special marker for no message */ 60 61 #define SSH_MSG_NONE 0 62 63 /* ranges */ 64 65 #define SSH2_MSG_TRANSPORT_MIN 1 66 #define SSH2_MSG_TRANSPORT_MAX 49 67 #define SSH2_MSG_USERAUTH_MIN 50 68 #define SSH2_MSG_USERAUTH_MAX 79 69 #define SSH2_MSG_USERAUTH_PER_METHOD_MIN 60 70 #define SSH2_MSG_USERAUTH_PER_METHOD_MAX SSH2_MSG_USERAUTH_MAX 71 #define SSH2_MSG_CONNECTION_MIN 80 72 #define SSH2_MSG_CONNECTION_MAX 127 73 #define SSH2_MSG_RESERVED_MIN 128 74 #define SSH2_MSG_RESERVED_MAX 191 75 #define SSH2_MSG_LOCAL_MIN 192 76 #define SSH2_MSG_LOCAL_MAX 255 77 #define SSH2_MSG_MIN 1 78 #define SSH2_MSG_MAX 255 79 80 /* transport layer: generic */ 81 82 #define SSH2_MSG_DISCONNECT 1 83 #define SSH2_MSG_IGNORE 2 84 #define SSH2_MSG_UNIMPLEMENTED 3 85 #define SSH2_MSG_DEBUG 4 86 #define SSH2_MSG_SERVICE_REQUEST 5 87 #define SSH2_MSG_SERVICE_ACCEPT 6 88 #define SSH2_MSG_EXT_INFO 7 89 90 /* transport layer: alg negotiation */ 91 92 #define SSH2_MSG_KEXINIT 20 93 #define SSH2_MSG_NEWKEYS 21 94 95 /* transport layer: kex specific messages, can be reused */ 96 97 #define SSH2_MSG_KEXDH_INIT 30 98 #define SSH2_MSG_KEXDH_REPLY 31 99 100 /* dh-group-exchange */ 101 #define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30 102 #define SSH2_MSG_KEX_DH_GEX_GROUP 31 103 #define SSH2_MSG_KEX_DH_GEX_INIT 32 104 #define SSH2_MSG_KEX_DH_GEX_REPLY 33 105 #define SSH2_MSG_KEX_DH_GEX_REQUEST 34 106 107 /* ecdh */ 108 #define SSH2_MSG_KEX_ECDH_INIT 30 109 #define SSH2_MSG_KEX_ECDH_REPLY 31 110 111 /* user authentication: generic */ 112 113 #define SSH2_MSG_USERAUTH_REQUEST 50 114 #define SSH2_MSG_USERAUTH_FAILURE 51 115 #define SSH2_MSG_USERAUTH_SUCCESS 52 116 #define SSH2_MSG_USERAUTH_BANNER 53 117 118 /* user authentication: method specific, can be reused */ 119 120 #define SSH2_MSG_USERAUTH_PK_OK 60 121 #define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60 122 #define SSH2_MSG_USERAUTH_INFO_REQUEST 60 123 #define SSH2_MSG_USERAUTH_INFO_RESPONSE 61 124 125 /* connection protocol: generic */ 126 127 #define SSH2_MSG_GLOBAL_REQUEST 80 128 #define SSH2_MSG_REQUEST_SUCCESS 81 129 #define SSH2_MSG_REQUEST_FAILURE 82 130 131 /* channel related messages */ 132 133 #define SSH2_MSG_CHANNEL_OPEN 90 134 #define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 135 #define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 136 #define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 137 #define SSH2_MSG_CHANNEL_DATA 94 138 #define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 139 #define SSH2_MSG_CHANNEL_EOF 96 140 #define SSH2_MSG_CHANNEL_CLOSE 97 141 #define SSH2_MSG_CHANNEL_REQUEST 98 142 #define SSH2_MSG_CHANNEL_SUCCESS 99 143 #define SSH2_MSG_CHANNEL_FAILURE 100 144 145 /* disconnect reason code */ 146 147 #define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1 148 #define SSH2_DISCONNECT_PROTOCOL_ERROR 2 149 #define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3 150 #define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4 151 #define SSH2_DISCONNECT_RESERVED 4 152 #define SSH2_DISCONNECT_MAC_ERROR 5 153 #define SSH2_DISCONNECT_COMPRESSION_ERROR 6 154 #define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7 155 #define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8 156 #define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9 157 #define SSH2_DISCONNECT_CONNECTION_LOST 10 158 #define SSH2_DISCONNECT_BY_APPLICATION 11 159 #define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12 160 #define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13 161 #define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14 162 #define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15 163 164 /* misc */ 165 166 #define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1 167 #define SSH2_OPEN_CONNECT_FAILED 2 168 #define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3 169 #define SSH2_OPEN_RESOURCE_SHORTAGE 4 170 171 #define SSH2_EXTENDED_DATA_STDERR 1 172 173 /* Certificate types for OpenSSH certificate keys extension */ 174 #define SSH2_CERT_TYPE_USER 1 175 #define SSH2_CERT_TYPE_HOST 2 176