; sshlib.inc - SSHlib constants
;
; Copyright (C) 2016-2021 Jeffrey Amelynck
;
; This program is free software: you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation, either version 3 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program. If not, see <http://www.gnu.org/licenses/>.
; Error codes
SSHLIB_ERR_NOMEM = -1
SSHLIB_ERR_SOCKET = -2
SSHLIB_ERR_PROTOCOL = -3
SSHLIB_ERR_HOSTNAME = -4
SSHLIB_ERR_DISCONNECTING = -5
SSHLIB_ERR_MAC_VERIFY_FAIL = -6
SSHLIB_ERR_HKEY_NO_ALGO = -7
SSHLIB_ERR_HKEY_VERIFY_FAIL = -8
SSHLIB_ERR_HKEY_SIGNATURE = -9
SSHLIB_ERR_HKEY_PUBLIC_KEY = -10
; Channel status codes
SSHLIB_CHAN_STAT_CONNECTING = 0
SSHLIB_CHAN_STAT_CONNECTED = 1
SSHLIB_CHAN_STAT_EOF_RECEIVED = 2
SSHLIB_CHAN_STAT_CLOSING = 3
SSHLIB_CHAN_STAT_CLOSED = 3
; Connection status codes
SSHLIB_CON_STAT_INIT = 0
SSHLIB_CON_STAT_KEX_DONE = 1
; Algorithm identifier codes
SSHLIB_ALGO_NONE = 0
SSHLIB_KEX_DH_SHA256 = 1 ; diffie-hellman-group-exchange-sha256
SSHLIB_HOSTKEY_DSS = 1 ; ssh-dss
SSHLIB_HOSTKEY_RSA = 2 ; ssh-rsa
SSHLIB_HOSTKEY_RSA_SHA2_256 = 3 ; rsa-sha2-256
SSHLIB_HOSTKEY_RSA_SHA2_512 = 4 ; rsa-sha2-512
SSHLIB_CRYPT_AES128_CTR = 1 ; aes128-ctr
SSHLIB_CRYPT_AES128_CBC = 2 ; aes128-cbc
SSHLIB_CRYPT_AES192_CTR = 3 ; aes192-cbc
SSHLIB_CRYPT_AES192_CBC = 4 ; aes192-ctr
SSHLIB_CRYPT_AES256_CTR = 5 ; aes256-ctr
SSHLIB_CRYPT_AES256_CBC = 6 ; aes256-cbc
SSHLIB_CRYPT_CHACHA20_POLY1305 = 7 ; chacha20-poly1305@openssh.com
SSHLIB_HMAC_SHA2_256 = 1 ; hmac-sha2-256
SSHLIB_HMAC_SHA2_512 = 2 ; hmac-sha2-512
SSHLIB_HMAC_SHA2_256_ETM = 3 ; hmac-sha2-256-etm@openssh.com
SSHLIB_HMAC_SHA2_512_ETM = 4 ; hmac-sha2-512-etm@openssh.com
SSHLIB_COMPR_ZLIB = 1 ; zlib
; Hostkey
SSHLIB_HOSTKEY_PROBLEM_UNKNOWN = 0
SSHLIB_HOSTKEY_PROBLEM_MISMATCH = 1
SSHLIB_HOSTKEY_REFUSE = -1
SSHLIB_HOSTKEY_ACCEPT = 0
SSHLIB_HOSTKEY_ONCE = 1
; SSH network packet header
struct ssh_packet_header
packet_length dd ? ; The length of the packet in bytes, not including 'mac' or the
; 'packet_length' field itself.
padding_length db ? ; Length of 'random padding' (bytes).
message_code db ? ; First byte of payload
ends
; SSH connection structure
struct sshlib_connection
status dd ?
socketnum dd ?
rx_proc dd ?
tx_proc dd ?
rx_mac_ctx rb LIBCRASH_CTX_LEN
tx_mac_ctx rb LIBCRASH_CTX_LEN
rx_crypt_ctx rb LIBCRASH_CTX_LEN
tx_crypt_ctx rb LIBCRASH_CTX_LEN
rx_crypt_proc dd ?
tx_crypt_proc dd ?
rx_crypt_blocksize dd ?
tx_crypt_blocksize dd ?
tx_pad_size dd ? ; = Max(8, tx_crypt_blocksize)
dd ?
rx_mac_proc dd ?
tx_mac_proc dd ?
rx_mac_length dd ?
tx_mac_length dd ?
rd 3 ; align
rx_mac_seqnr dd ? ; DO NOT MOVE (specific place for HMAC)
rx_buffer ssh_packet_header
rb BUFFERSIZE-sizeof.ssh_packet_header
tx_mac_seqnr dd ? ; DO NOT MOVE (specific place for HMAC)
tx_buffer ssh_packet_header
rb PACKETSIZE-sizeof.ssh_packet_header
part_ex_hash_ctx rb LIBCRASH_CTX_LEN
session_id rb SHA2_256_LEN
algo_kex dd ?
algo_hostkey dd ?
algo_crypt_rx dd ?
algo_crypt_tx dd ?
algo_mac_rx dd ?
algo_mac_tx dd ?
algo_compr_rx dd ?
algo_compr_tx dd ?
hostname_sz rb MAX_HOSTNAME_LENGTH
rx_enc_key rb 2*256/8
tx_enc_key rb 2*256/8
rx_int_key rb 2*256/8
tx_int_key rb 2*256/8
rx_iv rb 2*256/8
tx_iv rb 2*256/8
ends
; SSH channel structure
struct sshlib_channel
id dd ? ; Channel ID (big endian)
status dd ? ; Channel status
rcv_wnd dd ? ; Receive window
snd_wnd dd ? ; Send window
; rcv_callb dd ? ; TODO
ends