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/* |
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Copyright (c) 1998-2001, Robert O'Callahan |
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All rights reserved. |
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|
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Redistribution and use in source and binary forms, with or without modification, |
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are permitted provided that the following conditions are met: |
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|
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Redistributions of source code must retain the above copyright notice, this list of |
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conditions and the following disclaimer. |
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|
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Redistributions in binary form must reproduce the above copyright notice, this list |
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of conditions and the following disclaimer in the documentation and/or other materials |
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provided with the distribution. |
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|
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The name of Robert O'Callahan may not be used to endorse or promote products derived from |
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this software without specific prior written permission. |
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|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
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THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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/* |
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This code is copyright (C) 1998-1999 Robert O'Callahan. |
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See LICENSE.TXT for the license. |
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*/ |
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|
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#ifndef __SSH_H |
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#define __SSH_H |
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|
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#include "zlib.h" |
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#include <openssl/evp.h> |
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|
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#include "buffer.h" |
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#include "config.h" |
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|
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#define DEBUG_PRINT_TO_FILE(base, msg, len) { \ |
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static int count = 0; \ |
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debug_print(count + base, msg, len); \ |
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count++; \ |
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} |
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|
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// from OpenSSH |
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extern const EVP_CIPHER *evp_aes_128_ctr(void); |
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extern const EVP_CIPHER *evp_des3_ctr(void); |
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extern const EVP_CIPHER *evp_bf_ctr(void); |
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extern const EVP_CIPHER *evp_cast5_ctr(void); |
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#ifdef WITH_CAMELLIA_DRAFT |
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extern const EVP_CIPHER *evp_camellia_128_ctr(void); |
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#endif // WITH_CAMELLIA_DRAFT |
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|
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/* Some of this code has been adapted from Ian Goldberg's Pilot SSH */ |
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|
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typedef enum { |
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SSH_MSG_NONE, SSH_MSG_DISCONNECT, SSH_SMSG_PUBLIC_KEY, //2 |
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SSH_CMSG_SESSION_KEY, SSH_CMSG_USER, SSH_CMSG_AUTH_RHOSTS, // 5 |
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SSH_CMSG_AUTH_RSA, SSH_SMSG_AUTH_RSA_CHALLENGE, |
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SSH_CMSG_AUTH_RSA_RESPONSE, SSH_CMSG_AUTH_PASSWORD, |
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SSH_CMSG_REQUEST_PTY, // 10 |
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SSH_CMSG_WINDOW_SIZE, SSH_CMSG_EXEC_SHELL, |
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SSH_CMSG_EXEC_CMD, SSH_SMSG_SUCCESS, SSH_SMSG_FAILURE, |
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SSH_CMSG_STDIN_DATA, SSH_SMSG_STDOUT_DATA, SSH_SMSG_STDERR_DATA, |
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SSH_CMSG_EOF, SSH_SMSG_EXITSTATUS, |
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SSH_MSG_CHANNEL_OPEN_CONFIRMATION, SSH_MSG_CHANNEL_OPEN_FAILURE, |
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SSH_MSG_CHANNEL_DATA, SSH_MSG_CHANNEL_INPUT_EOF, |
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SSH_MSG_CHANNEL_OUTPUT_CLOSED, SSH_MSG_OBSOLETED0, |
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SSH_SMSG_X11_OPEN, SSH_CMSG_PORT_FORWARD_REQUEST, SSH_MSG_PORT_OPEN, |
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SSH_CMSG_AGENT_REQUEST_FORWARDING, SSH_SMSG_AGENT_OPEN, |
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SSH_MSG_IGNORE, SSH_CMSG_EXIT_CONFIRMATION, |
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SSH_CMSG_X11_REQUEST_FORWARDING, SSH_CMSG_AUTH_RHOSTS_RSA, |
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SSH_MSG_DEBUG, SSH_CMSG_REQUEST_COMPRESSION, |
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SSH_CMSG_MAX_PACKET_SIZE, SSH_CMSG_AUTH_TIS, |
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SSH_SMSG_AUTH_TIS_CHALLENGE, SSH_CMSG_AUTH_TIS_RESPONSE, |
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SSH_CMSG_AUTH_KERBEROS, SSH_SMSG_AUTH_KERBEROS_RESPONSE |
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} SSHMessage; |
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|
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typedef enum { |
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SSH_CIPHER_NONE, SSH_CIPHER_IDEA, SSH_CIPHER_DES, SSH_CIPHER_3DES, |
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SSH_CIPHER_TSS, SSH_CIPHER_RC4, SSH_CIPHER_BLOWFISH, |
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// for SSH2 |
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SSH2_CIPHER_3DES_CBC, SSH2_CIPHER_AES128_CBC, |
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SSH2_CIPHER_AES192_CBC, SSH2_CIPHER_AES256_CBC, |
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SSH2_CIPHER_BLOWFISH_CBC, SSH2_CIPHER_AES128_CTR, |
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SSH2_CIPHER_AES192_CTR, SSH2_CIPHER_AES256_CTR, |
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SSH2_CIPHER_ARCFOUR, SSH2_CIPHER_ARCFOUR128, SSH2_CIPHER_ARCFOUR256, |
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SSH2_CIPHER_CAST128_CBC, |
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SSH2_CIPHER_3DES_CTR, SSH2_CIPHER_BLOWFISH_CTR, SSH2_CIPHER_CAST128_CTR, |
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#ifdef WITH_CAMELLIA_DRAFT |
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SSH2_CIPHER_CAMELLIA128_CBC, SSH2_CIPHER_CAMELLIA192_CBC, SSH2_CIPHER_CAMELLIA256_CBC, |
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SSH2_CIPHER_CAMELLIA128_CTR, SSH2_CIPHER_CAMELLIA192_CTR, SSH2_CIPHER_CAMELLIA256_CTR, |
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SSH_CIPHER_MAX = SSH2_CIPHER_CAMELLIA256_CTR, |
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#else // WITH_CAMELLIA_DRAFT |
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SSH_CIPHER_MAX = SSH2_CIPHER_CAST128_CTR, |
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#endif // WITH_CAMELLIA_DRAFT |
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} SSHCipher; |
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|
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typedef enum { |
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SSH_AUTH_NONE, SSH_AUTH_RHOSTS, SSH_AUTH_RSA, SSH_AUTH_PASSWORD, |
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SSH_AUTH_RHOSTS_RSA, SSH_AUTH_TIS, SSH_AUTH_KERBEROS, |
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SSH_AUTH_PAGEANT = 16, |
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SSH_AUTH_MAX = SSH_AUTH_PAGEANT, |
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} SSHAuthMethod; |
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|
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typedef enum { |
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SSH_GENERIC_AUTHENTICATION, SSH_TIS_AUTHENTICATION |
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} SSHAuthMode; |
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|
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#define SSH_PROTOFLAG_SCREEN_NUMBER 1 |
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#define SSH_PROTOFLAG_HOST_IN_FWD_OPEN 2 |
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|
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enum channel_type { |
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TYPE_SHELL, TYPE_PORTFWD, TYPE_SCP, TYPE_SFTP, TYPE_AGENT, |
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}; |
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|
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// for SSH1 |
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#define SSH_MAX_SEND_PACKET_SIZE 250000 |
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|
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// for SSH2 |
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/* default window/packet sizes for tcp/x11-fwd-channel */ |
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// changed CHAN_SES_WINDOW_DEFAULT from 32KB to 128KB. (2007.10.29 maya) |
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#define CHAN_SES_PACKET_DEFAULT (32*1024) |
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#define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT) |
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#define CHAN_TCP_PACKET_DEFAULT (32*1024) |
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#define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT) |
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#if 0 // unused |
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#define CHAN_X11_PACKET_DEFAULT (16*1024) |
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#define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT) |
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#endif |
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|
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|
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/* SSH2 constants */ |
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|
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/* SSH2 messages */ |
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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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|
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#define SSH2_MSG_KEXINIT 20 |
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#define SSH2_MSG_NEWKEYS 21 |
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|
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#define SSH2_MSG_KEXDH_INIT 30 |
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#define SSH2_MSG_KEXDH_REPLY 31 |
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|
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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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|
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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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|
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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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|
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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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|
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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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#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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|
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/* SSH2 miscellaneous constants */ |
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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_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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|
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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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|
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|
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// �N���C�A���g�����T�[�o������������ |
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enum kex_init_proposals { |
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PROPOSAL_KEX_ALGS, |
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PROPOSAL_SERVER_HOST_KEY_ALGS, |
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PROPOSAL_ENC_ALGS_CTOS, |
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PROPOSAL_ENC_ALGS_STOC, |
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PROPOSAL_MAC_ALGS_CTOS, |
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PROPOSAL_MAC_ALGS_STOC, |
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PROPOSAL_COMP_ALGS_CTOS, |
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PROPOSAL_COMP_ALGS_STOC, |
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PROPOSAL_LANG_CTOS, |
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PROPOSAL_LANG_STOC, |
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PROPOSAL_MAX |
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}; |
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|
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#define KEX_DEFAULT_KEX "" |
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#define KEX_DEFAULT_PK_ALG "" |
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#define KEX_DEFAULT_ENCRYPT "" |
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#define KEX_DEFAULT_MAC "" |
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#define KEX_DEFAULT_COMP "" |
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#define KEX_DEFAULT_LANG "" |
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|
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static char *myproposal[PROPOSAL_MAX] = { |
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KEX_DEFAULT_KEX, |
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KEX_DEFAULT_PK_ALG, |
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KEX_DEFAULT_ENCRYPT, |
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KEX_DEFAULT_ENCRYPT, |
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KEX_DEFAULT_MAC, |
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KEX_DEFAULT_MAC, |
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KEX_DEFAULT_COMP, |
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KEX_DEFAULT_COMP, |
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KEX_DEFAULT_LANG, |
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KEX_DEFAULT_LANG, |
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}; |
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|
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|
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typedef enum { |
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KEY_NONE, |
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KEY_RSA1, |
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KEY_RSA, |
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KEY_DSA, |
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KEY_ECDSA256, |
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KEY_ECDSA384, |
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KEY_ECDSA521, |
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KEY_UNSPEC, |
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KEY_MAX = KEY_UNSPEC, |
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} ssh_keytype; |
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#define isECDSAkey(type) ((type) >= KEY_ECDSA256 && (type) <= KEY_ECDSA521) |
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|
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typedef struct ssh2_host_key { |
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ssh_keytype type; |
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char *name; |
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} ssh2_host_key_t; |
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|
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static ssh2_host_key_t ssh2_host_key[] = { |
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{KEY_RSA1, "ssh-rsa1"}, // for SSH1 only |
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{KEY_RSA, "ssh-rsa"}, // RFC4253 |
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{KEY_DSA, "ssh-dss"}, // RFC4253 |
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{KEY_ECDSA256, "ecdsa-sha2-nistp256"}, // RFC5656 |
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{KEY_ECDSA384, "ecdsa-sha2-nistp384"}, // RFC5656 |
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{KEY_ECDSA521, "ecdsa-sha2-nistp521"}, // RFC5656 |
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{KEY_UNSPEC, "ssh-unknown"}, |
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{KEY_NONE, NULL}, |
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}; |
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|
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/* Minimum modulus size (n) for RSA keys. */ |
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#define SSH_RSA_MINIMUM_MODULUS_SIZE 768 |
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|
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#define SSH_KEYGEN_DEFAULT_BITS 2048 |
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#define SSH_RSA_MINIMUM_KEY_SIZE 768 |
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#define SSH_DSA_MINIMUM_KEY_SIZE 1024 |
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|
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|
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typedef struct ssh2_cipher { |
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SSHCipher cipher; |
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char *name; |
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int block_size; |
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int key_len; |
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int discard_len; |
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const EVP_CIPHER *(*func)(void); |
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} ssh2_cipher_t; |
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|
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static ssh2_cipher_t ssh2_ciphers[] = { |
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{SSH2_CIPHER_3DES_CBC, "3des-cbc", 8, 24, 0, EVP_des_ede3_cbc}, // RFC4253 |
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{SSH2_CIPHER_AES128_CBC, "aes128-cbc", 16, 16, 0, EVP_aes_128_cbc}, // RFC4253 |
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{SSH2_CIPHER_AES192_CBC, "aes192-cbc", 16, 24, 0, EVP_aes_192_cbc}, // RFC4253 |
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{SSH2_CIPHER_AES256_CBC, "aes256-cbc", 16, 32, 0, EVP_aes_256_cbc}, // RFC4253 |
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{SSH2_CIPHER_BLOWFISH_CBC, "blowfish-cbc", 8, 16, 0, EVP_bf_cbc}, // RFC4253 |
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{SSH2_CIPHER_AES128_CTR, "aes128-ctr", 16, 16, 0, evp_aes_128_ctr}, // RFC4344 |
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{SSH2_CIPHER_AES192_CTR, "aes192-ctr", 16, 24, 0, evp_aes_128_ctr}, // RFC4344 |
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{SSH2_CIPHER_AES256_CTR, "aes256-ctr", 16, 32, 0, evp_aes_128_ctr}, // RFC4344 |
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{SSH2_CIPHER_ARCFOUR, "arcfour", 8, 16, 0, EVP_rc4}, // RFC4253 |
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{SSH2_CIPHER_ARCFOUR128, "arcfour128", 8, 16, 1536, EVP_rc4}, // RFC4345 |
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{SSH2_CIPHER_ARCFOUR256, "arcfour256", 8, 32, 1536, EVP_rc4}, // RFC4345 |
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{SSH2_CIPHER_CAST128_CBC, "cast128-cbc", 8, 16, 0, EVP_cast5_cbc}, // RFC4253 |
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{SSH2_CIPHER_3DES_CTR, "3des-ctr", 8, 24, 0, evp_des3_ctr}, // RFC4344 |
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{SSH2_CIPHER_BLOWFISH_CTR, "blowfish-ctr", 8, 16, 0, evp_bf_ctr}, // RFC4344 |
| 302 |
{SSH2_CIPHER_CAST128_CTR, "cast128-ctr", 8, 16, 0, evp_cast5_ctr}, // RFC4344 |
| 303 |
#ifdef WITH_CAMELLIA_DRAFT |
| 304 |
{SSH2_CIPHER_CAMELLIA128_CBC, "camellia128-cbc", 16, 16, 0, EVP_camellia_128_cbc}, // draft-kanno-secsh-camellia-02 |
| 305 |
{SSH2_CIPHER_CAMELLIA192_CBC, "camellia192-cbc", 16, 24, 0, EVP_camellia_192_cbc}, // draft-kanno-secsh-camellia-02 |
| 306 |
{SSH2_CIPHER_CAMELLIA256_CBC, "camellia256-cbc", 16, 32, 0, EVP_camellia_256_cbc}, // draft-kanno-secsh-camellia-02 |
| 307 |
{SSH2_CIPHER_CAMELLIA128_CTR, "camellia128-ctr", 16, 16, 0, evp_camellia_128_ctr}, // draft-kanno-secsh-camellia-02 |
| 308 |
{SSH2_CIPHER_CAMELLIA192_CTR, "camellia192-ctr", 16, 24, 0, evp_camellia_128_ctr}, // draft-kanno-secsh-camellia-02 |
| 309 |
{SSH2_CIPHER_CAMELLIA256_CTR, "camellia256-ctr", 16, 32, 0, evp_camellia_128_ctr}, // draft-kanno-secsh-camellia-02 |
| 310 |
#ifdef WITH_CAMELLIA_PRIVATE |
| 311 |
{SSH2_CIPHER_CAMELLIA128_CBC, "camellia128-cbc@openssh.org", 16, 16, 0, EVP_camellia_128_cbc}, |
| 312 |
{SSH2_CIPHER_CAMELLIA192_CBC, "camellia192-cbc@openssh.org", 16, 24, 0, EVP_camellia_192_cbc}, |
| 313 |
{SSH2_CIPHER_CAMELLIA256_CBC, "camellia256-cbc@openssh.org", 16, 32, 0, EVP_camellia_256_cbc}, |
| 314 |
{SSH2_CIPHER_CAMELLIA128_CTR, "camellia128-ctr@openssh.org", 16, 16, 0, evp_camellia_128_ctr}, |
| 315 |
{SSH2_CIPHER_CAMELLIA192_CTR, "camellia192-ctr@openssh.org", 16, 24, 0, evp_camellia_128_ctr}, |
| 316 |
{SSH2_CIPHER_CAMELLIA256_CTR, "camellia256-ctr@openssh.org", 16, 32, 0, evp_camellia_128_ctr}, |
| 317 |
#endif // WITH_CAMELLIA_PRIVATE |
| 318 |
#endif // WITH_CAMELLIA_DRAFT |
| 319 |
{SSH_CIPHER_NONE, NULL, 0, 0, 0, NULL}, |
| 320 |
}; |
| 321 |
|
| 322 |
|
| 323 |
typedef enum { |
| 324 |
KEX_DH_NONE, /* disabled line */ |
| 325 |
KEX_DH_GRP1_SHA1, |
| 326 |
KEX_DH_GRP14_SHA1, |
| 327 |
KEX_DH_GEX_SHA1, |
| 328 |
KEX_DH_GEX_SHA256, |
| 329 |
KEX_ECDH_SHA2_256, |
| 330 |
KEX_ECDH_SHA2_384, |
| 331 |
KEX_ECDH_SHA2_521, |
| 332 |
KEX_DH_UNKNOWN, |
| 333 |
KEX_DH_MAX = KEX_DH_UNKNOWN, |
| 334 |
} kex_algorithm; |
| 335 |
|
| 336 |
typedef struct ssh2_kex_algorithm { |
| 337 |
kex_algorithm kextype; |
| 338 |
char *name; |
| 339 |
const EVP_MD *(*evp_md)(void); |
| 340 |
} ssh2_kex_algorithm_t; |
| 341 |
|
| 342 |
static ssh2_kex_algorithm_t ssh2_kex_algorithms[] = { |
| 343 |
{KEX_DH_GRP1_SHA1, "diffie-hellman-group1-sha1", EVP_sha1}, // RFC4253 |
| 344 |
{KEX_DH_GRP14_SHA1, "diffie-hellman-group14-sha1", EVP_sha1}, // RFC4253 |
| 345 |
{KEX_DH_GEX_SHA1, "diffie-hellman-group-exchange-sha1", EVP_sha1}, // RFC4419 |
| 346 |
{KEX_DH_GEX_SHA256, "diffie-hellman-group-exchange-sha256", EVP_sha256}, // RFC4419 |
| 347 |
{KEX_ECDH_SHA2_256, "ecdh-sha2-nistp256", EVP_sha256}, // RFC5656 |
| 348 |
{KEX_ECDH_SHA2_384, "ecdh-sha2-nistp384", EVP_sha384}, // RFC5656 |
| 349 |
{KEX_ECDH_SHA2_521, "ecdh-sha2-nistp521", EVP_sha512}, // RFC5656 |
| 350 |
{KEX_DH_NONE , NULL, NULL}, |
| 351 |
}; |
| 352 |
|
| 353 |
|
| 354 |
typedef enum { |
| 355 |
HMAC_NONE, /* disabled line */ |
| 356 |
HMAC_SHA1, |
| 357 |
HMAC_MD5, |
| 358 |
HMAC_SHA1_96, |
| 359 |
HMAC_MD5_96, |
| 360 |
HMAC_RIPEMD160, |
| 361 |
HMAC_SHA2_256, |
| 362 |
HMAC_SHA2_256_96, |
| 363 |
HMAC_SHA2_512, |
| 364 |
HMAC_SHA2_512_96, |
| 365 |
HMAC_UNKNOWN, |
| 366 |
HMAC_MAX = HMAC_UNKNOWN, |
| 367 |
} hmac_type; |
| 368 |
|
| 369 |
typedef struct ssh2_mac { |
| 370 |
hmac_type type; |
| 371 |
char *name; |
| 372 |
const EVP_MD *(*evp_md)(void); |
| 373 |
int truncatebits; |
| 374 |
} ssh2_mac_t; |
| 375 |
|
| 376 |
static ssh2_mac_t ssh2_macs[] = { |
| 377 |
{HMAC_SHA1, "hmac-sha1", EVP_sha1, 0}, // RFC4253 |
| 378 |
{HMAC_MD5, "hmac-md5", EVP_md5, 0}, // RFC4253 |
| 379 |
{HMAC_SHA1_96, "hmac-sha1-96", EVP_sha1, 96}, // RFC4253 |
| 380 |
{HMAC_MD5_96, "hmac-md5-96", EVP_md5, 96}, // RFC4253 |
| 381 |
{HMAC_RIPEMD160, "hmac-ripemd160@openssh.com", EVP_ripemd160, 0}, |
| 382 |
{HMAC_SHA2_256, "hmac-sha2-256", EVP_sha256, 0}, // draft-dbider-sha2-mac-for-ssh-02 |
| 383 |
{HMAC_SHA2_256_96, "hmac-sha2-256-96", EVP_sha256, 96}, // draft-dbider-sha2-mac-for-ssh-02 |
| 384 |
{HMAC_SHA2_512, "hmac-sha2-512", EVP_sha512, 0}, // draft-dbider-sha2-mac-for-ssh-02 |
| 385 |
{HMAC_SHA2_512_96, "hmac-sha2-512-96", EVP_sha512, 96}, // draft-dbider-sha2-mac-for-ssh-02 |
| 386 |
{HMAC_NONE, NULL, NULL, 0}, |
| 387 |
}; |
| 388 |
|
| 389 |
|
| 390 |
typedef enum { |
| 391 |
COMP_NONE, /* disabled line */ |
| 392 |
COMP_NOCOMP, |
| 393 |
COMP_ZLIB, |
| 394 |
COMP_DELAYED, |
| 395 |
COMP_UNKNOWN, |
| 396 |
COMP_MAX = COMP_UNKNOWN, |
| 397 |
} compression_type; |
| 398 |
|
| 399 |
typedef struct ssh2_comp { |
| 400 |
compression_type type; |
| 401 |
char *name; |
| 402 |
} ssh2_comp_t; |
| 403 |
|
| 404 |
static ssh2_comp_t ssh2_comps[] = { |
| 405 |
{COMP_NOCOMP, "none"}, // RFC4253 |
| 406 |
{COMP_ZLIB, "zlib"}, // RFC4253 |
| 407 |
{COMP_DELAYED, "zlib@openssh.com"}, |
| 408 |
{COMP_NONE, NULL}, |
| 409 |
}; |
| 410 |
|
| 411 |
|
| 412 |
struct Enc { |
| 413 |
u_char *key; |
| 414 |
u_char *iv; |
| 415 |
unsigned int key_len; |
| 416 |
unsigned int block_size; |
| 417 |
}; |
| 418 |
|
| 419 |
struct Mac { |
| 420 |
char *name; |
| 421 |
int enabled; |
| 422 |
const EVP_MD *md; |
| 423 |
int mac_len; |
| 424 |
u_char *key; |
| 425 |
int key_len; |
| 426 |
}; |
| 427 |
|
| 428 |
struct Comp { |
| 429 |
int type; |
| 430 |
int enabled; |
| 431 |
char *name; |
| 432 |
}; |
| 433 |
|
| 434 |
typedef struct { |
| 435 |
struct Enc enc; |
| 436 |
struct Mac mac; |
| 437 |
struct Comp comp; |
| 438 |
} Newkeys; |
| 439 |
|
| 440 |
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) |
| 441 |
|
| 442 |
enum kex_modes { |
| 443 |
MODE_IN, |
| 444 |
MODE_OUT, |
| 445 |
MODE_MAX |
| 446 |
}; |
| 447 |
|
| 448 |
|
| 449 |
// �z�X�g�L�[(SSH1, SSH2����)���f�[�^�\�� (2006.3.21 yutaka) |
| 450 |
typedef struct Key { |
| 451 |
// host key type |
| 452 |
ssh_keytype type; |
| 453 |
// SSH2 RSA |
| 454 |
RSA *rsa; |
| 455 |
// SSH2 DSA |
| 456 |
DSA *dsa; |
| 457 |
// SSH2 ECDSA |
| 458 |
EC_KEY *ecdsa; |
| 459 |
// SSH1 RSA |
| 460 |
int bits; |
| 461 |
unsigned char *exp; |
| 462 |
unsigned char *mod; |
| 463 |
} Key; |
| 464 |
|
| 465 |
// fingerprint������ |
| 466 |
enum fp_rep { |
| 467 |
SSH_FP_HEX, |
| 468 |
SSH_FP_BUBBLEBABBLE, |
| 469 |
SSH_FP_RANDOMART |
| 470 |
}; |
| 471 |
|
| 472 |
enum fp_type { |
| 473 |
SSH_FP_MD5, |
| 474 |
SSH_FP_SHA1, |
| 475 |
SSH_FP_SHA256 |
| 476 |
}; |
| 477 |
|
| 478 |
enum scp_dir { |
| 479 |
TOREMOTE, FROMREMOTE, |
| 480 |
}; |
| 481 |
|
| 482 |
/* The packet handler returns TRUE to keep the handler in place, |
| 483 |
FALSE to remove the handler. */ |
| 484 |
typedef BOOL (* SSHPacketHandler)(PTInstVar pvar); |
| 485 |
|
| 486 |
typedef struct _SSHPacketHandlerItem SSHPacketHandlerItem; |
| 487 |
struct _SSHPacketHandlerItem { |
| 488 |
SSHPacketHandler handler; |
| 489 |
/* Circular list of handlers for given message */ |
| 490 |
SSHPacketHandlerItem FAR * next_for_message; |
| 491 |
SSHPacketHandlerItem FAR * last_for_message; |
| 492 |
/* Circular list of handlers in set */ |
| 493 |
SSHPacketHandlerItem FAR * next_in_set; |
| 494 |
int active_for_message; |
| 495 |
}; |
| 496 |
|
| 497 |
typedef struct { |
| 498 |
char FAR * hostname; |
| 499 |
|
| 500 |
int server_protocol_flags; |
| 501 |
char FAR * server_ID; |
| 502 |
|
| 503 |
/* This buffer is used to hold the outgoing data, and encrypted in-place |
| 504 |
here if necessary. */ |
| 505 |
unsigned char FAR * outbuf; |
| 506 |
long outbuflen; |
| 507 |
/* This buffer is used by the SSH protocol processing to store uncompressed |
| 508 |
packet data for compression. User data is never streamed through here; |
| 509 |
it is compressed directly from the user's buffer. */ |
| 510 |
unsigned char FAR * precompress_outbuf; |
| 511 |
long precompress_outbuflen; |
| 512 |
/* this is the length of the packet data, including the type header */ |
| 513 |
long outgoing_packet_len; |
| 514 |
|
| 515 |
/* This buffer is used by the SSH protocol processing to store decompressed |
| 516 |
packet data. User data is never streamed through here; it is decompressed |
| 517 |
directly to the user's buffer. */ |
| 518 |
unsigned char FAR * postdecompress_inbuf; |
| 519 |
long postdecompress_inbuflen; |
| 520 |
|
| 521 |
unsigned char FAR * payload; |
| 522 |
long payload_grabbed; |
| 523 |
long payloadlen; |
| 524 |
long payload_datastart; |
| 525 |
long payload_datalen; |
| 526 |
|
| 527 |
uint32 receiver_sequence_number; |
| 528 |
uint32 sender_sequence_number; |
| 529 |
|
| 530 |
z_stream compress_stream; |
| 531 |
z_stream decompress_stream; |
| 532 |
BOOL compressing; |
| 533 |
BOOL decompressing; |
| 534 |
int compression_level; |
| 535 |
|
| 536 |
SSHPacketHandlerItem FAR * packet_handlers[256]; |
| 537 |
int status_flags; |
| 538 |
|
| 539 |
int win_cols; |
| 540 |
int win_rows; |
| 541 |
|
| 542 |
unsigned short tcpport; |
| 543 |
} SSHState; |
| 544 |
|
| 545 |
#define STATUS_DONT_SEND_USER_NAME 0x01 |
| 546 |
#define STATUS_EXPECTING_COMPRESSION_RESPONSE 0x02 |
| 547 |
#define STATUS_DONT_SEND_CREDENTIALS 0x04 |
| 548 |
#define STATUS_HOST_OK 0x08 |
| 549 |
#define STATUS_INTERACTIVE 0x10 |
| 550 |
#define STATUS_IN_PARTIAL_ID_STRING 0x20 |
| 551 |
|
| 552 |
void SSH_init(PTInstVar pvar); |
| 553 |
void SSH_open(PTInstVar pvar); |
| 554 |
void SSH_notify_disconnecting(PTInstVar pvar, char FAR * reason); |
| 555 |
/* SSH_handle_server_ID returns TRUE iff a valid ID string has been |
| 556 |
received. If it returns FALSE, we need to keep looking for another |
| 557 |
ID string. */ |
| 558 |
BOOL SSH_handle_server_ID(PTInstVar pvar, char FAR * ID, int ID_len); |
| 559 |
/* SSH_handle_packet requires NO PAYLOAD on entry. |
| 560 |
'len' is the size of the packet: payload + padding (+ CRC for SSHv1) |
| 561 |
'padding' is the size of the padding. |
| 562 |
'data' points to the start of the packet data (the length field) |
| 563 |
*/ |
| 564 |
void SSH_handle_packet(PTInstVar pvar, char FAR * data, int len, int padding); |
| 565 |
void SSH_notify_win_size(PTInstVar pvar, int cols, int rows); |
| 566 |
void SSH_notify_user_name(PTInstVar pvar); |
| 567 |
void SSH_notify_cred(PTInstVar pvar); |
| 568 |
void SSH_notify_host_OK(PTInstVar pvar); |
| 569 |
void SSH_send(PTInstVar pvar, unsigned char const FAR * buf, unsigned int buflen); |
| 570 |
/* SSH_extract_payload returns number of bytes extracted */ |
| 571 |
int SSH_extract_payload(PTInstVar pvar, unsigned char FAR * dest, int len); |
| 572 |
void SSH_end(PTInstVar pvar); |
| 573 |
|
| 574 |
void SSH_get_server_ID_info(PTInstVar pvar, char FAR * dest, int len); |
| 575 |
void SSH_get_protocol_version_info(PTInstVar pvar, char FAR * dest, int len); |
| 576 |
void SSH_get_compression_info(PTInstVar pvar, char FAR * dest, int len); |
| 577 |
|
| 578 |
/* len must be <= SSH_MAX_SEND_PACKET_SIZE */ |
| 579 |
void SSH_channel_send(PTInstVar pvar, int channel_num, |
| 580 |
uint32 remote_channel_num, |
| 581 |
unsigned char FAR * buf, int len); |
| 582 |
void SSH_fail_channel_open(PTInstVar pvar, uint32 remote_channel_num); |
| 583 |
void SSH_confirm_channel_open(PTInstVar pvar, uint32 remote_channel_num, uint32 local_channel_num); |
| 584 |
void SSH_channel_output_eof(PTInstVar pvar, uint32 remote_channel_num); |
| 585 |
void SSH_channel_input_eof(PTInstVar pvar, uint32 remote_channel_num, uint32 local_channel_num); |
| 586 |
void SSH_request_forwarding(PTInstVar pvar, char FAR * bind_address, int from_server_port, |
| 587 |
char FAR * to_local_host, int to_local_port); |
| 588 |
void SSH_request_X11_forwarding(PTInstVar pvar, |
| 589 |
char FAR * auth_protocol, unsigned char FAR * auth_data, int auth_data_len, int screen_num); |
| 590 |
void SSH_open_channel(PTInstVar pvar, uint32 local_channel_num, |
| 591 |
char FAR * to_remote_host, int to_remote_port, |
| 592 |
char FAR * originator, unsigned short originator_port); |
| 593 |
|
| 594 |
int SSH_start_scp(PTInstVar pvar, char *sendfile, char *dstfile); |
| 595 |
int SSH_start_scp_receive(PTInstVar pvar, char *filename); |
| 596 |
int SSH_scp_transaction(PTInstVar pvar, char *sendfile, char *dstfile, enum scp_dir direction); |
| 597 |
int SSH_sftp_transaction(PTInstVar pvar); |
| 598 |
|
| 599 |
/* auxiliary SSH2 interfaces for pkt.c */ |
| 600 |
int SSH_get_min_packet_size(PTInstVar pvar); |
| 601 |
/* data is guaranteed to be at least SSH_get_min_packet_size bytes long |
| 602 |
at least 5 bytes must be decrypted */ |
| 603 |
void SSH_predecrpyt_packet(PTInstVar pvar, char FAR * data); |
| 604 |
int SSH_get_clear_MAC_size(PTInstVar pvar); |
| 605 |
|
| 606 |
#define SSH_is_any_payload(pvar) ((pvar)->ssh_state.payload_datalen > 0) |
| 607 |
#define SSH_get_host_name(pvar) ((pvar)->ssh_state.hostname) |
| 608 |
#define SSH_get_compression_level(pvar) ((pvar)->ssh_state.compressing ? (pvar)->ts_SSH_CompressionLevel : 0) |
| 609 |
|
| 610 |
void SSH2_send_kexinit(PTInstVar pvar); |
| 611 |
BOOL do_SSH2_userauth(PTInstVar pvar); |
| 612 |
BOOL do_SSH2_authrequest(PTInstVar pvar); |
| 613 |
void debug_print(int no, char *msg, int len); |
| 614 |
int get_cipher_block_size(SSHCipher cipher); |
| 615 |
int get_cipher_key_len(SSHCipher cipher); |
| 616 |
char* get_kex_algorithm_name(kex_algorithm kextype); |
| 617 |
const EVP_CIPHER* get_cipher_EVP_CIPHER(SSHCipher cipher); |
| 618 |
const EVP_MD* get_kex_algorithm_EVP_MD(kex_algorithm kextype); |
| 619 |
char* get_ssh2_mac_name(hmac_type type); |
| 620 |
const EVP_MD* get_ssh2_mac_EVP_MD(hmac_type type); |
| 621 |
int get_ssh2_mac_truncatebits(hmac_type type); |
| 622 |
char* get_ssh2_comp_name(compression_type type); |
| 623 |
char* get_ssh_keytype_name(ssh_keytype type); |
| 624 |
int get_cipher_discard_len(SSHCipher cipher); |
| 625 |
void ssh_heartbeat_lock_initialize(void); |
| 626 |
void ssh_heartbeat_lock_finalize(void); |
| 627 |
void ssh_heartbeat_lock(void); |
| 628 |
void ssh_heartbeat_unlock(void); |
| 629 |
void halt_ssh_heartbeat_thread(PTInstVar pvar); |
| 630 |
void ssh2_channel_free(void); |
| 631 |
BOOL handle_SSH2_userauth_inforeq(PTInstVar pvar); |
| 632 |
BOOL handle_SSH2_userauth_passwd_changereq(PTInstVar pvar); |
| 633 |
void SSH2_update_compression_myproposal(PTInstVar pvar); |
| 634 |
void SSH2_update_cipher_myproposal(PTInstVar pvar); |
| 635 |
void SSH2_update_kex_myproposal(PTInstVar pvar); |
| 636 |
void SSH2_update_host_key_myproposal(PTInstVar pvar); |
| 637 |
void SSH2_update_hmac_myproposal(PTInstVar pvar); |
| 638 |
int SSH_notify_break_signal(PTInstVar pvar); |
| 639 |
|
| 640 |
#endif |
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