130 lines
4.0 KiB
Python
130 lines
4.0 KiB
Python
# Copyright (C) 2011 Jeff Forcier <jeff@bitprophet.org>
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#
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# This file is part of ssh.
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#
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# 'ssh' is free software; you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation; either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# 'ssh' is distrubuted in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with 'ssh'; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA.
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"""
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Common constants and global variables.
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"""
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MSG_DISCONNECT, MSG_IGNORE, MSG_UNIMPLEMENTED, MSG_DEBUG, MSG_SERVICE_REQUEST, \
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MSG_SERVICE_ACCEPT = range(1, 7)
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MSG_KEXINIT, MSG_NEWKEYS = range(20, 22)
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MSG_USERAUTH_REQUEST, MSG_USERAUTH_FAILURE, MSG_USERAUTH_SUCCESS, \
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MSG_USERAUTH_BANNER = range(50, 54)
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MSG_USERAUTH_PK_OK = 60
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MSG_USERAUTH_INFO_REQUEST, MSG_USERAUTH_INFO_RESPONSE = range(60, 62)
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MSG_GLOBAL_REQUEST, MSG_REQUEST_SUCCESS, MSG_REQUEST_FAILURE = range(80, 83)
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MSG_CHANNEL_OPEN, MSG_CHANNEL_OPEN_SUCCESS, MSG_CHANNEL_OPEN_FAILURE, \
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MSG_CHANNEL_WINDOW_ADJUST, MSG_CHANNEL_DATA, MSG_CHANNEL_EXTENDED_DATA, \
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MSG_CHANNEL_EOF, MSG_CHANNEL_CLOSE, MSG_CHANNEL_REQUEST, \
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MSG_CHANNEL_SUCCESS, MSG_CHANNEL_FAILURE = range(90, 101)
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# for debugging:
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MSG_NAMES = {
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MSG_DISCONNECT: 'disconnect',
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MSG_IGNORE: 'ignore',
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MSG_UNIMPLEMENTED: 'unimplemented',
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MSG_DEBUG: 'debug',
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MSG_SERVICE_REQUEST: 'service-request',
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MSG_SERVICE_ACCEPT: 'service-accept',
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MSG_KEXINIT: 'kexinit',
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MSG_NEWKEYS: 'newkeys',
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30: 'kex30',
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31: 'kex31',
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32: 'kex32',
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33: 'kex33',
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34: 'kex34',
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MSG_USERAUTH_REQUEST: 'userauth-request',
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MSG_USERAUTH_FAILURE: 'userauth-failure',
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MSG_USERAUTH_SUCCESS: 'userauth-success',
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MSG_USERAUTH_BANNER: 'userauth--banner',
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MSG_USERAUTH_PK_OK: 'userauth-60(pk-ok/info-request)',
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MSG_USERAUTH_INFO_RESPONSE: 'userauth-info-response',
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MSG_GLOBAL_REQUEST: 'global-request',
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MSG_REQUEST_SUCCESS: 'request-success',
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MSG_REQUEST_FAILURE: 'request-failure',
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MSG_CHANNEL_OPEN: 'channel-open',
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MSG_CHANNEL_OPEN_SUCCESS: 'channel-open-success',
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MSG_CHANNEL_OPEN_FAILURE: 'channel-open-failure',
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MSG_CHANNEL_WINDOW_ADJUST: 'channel-window-adjust',
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MSG_CHANNEL_DATA: 'channel-data',
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MSG_CHANNEL_EXTENDED_DATA: 'channel-extended-data',
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MSG_CHANNEL_EOF: 'channel-eof',
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MSG_CHANNEL_CLOSE: 'channel-close',
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MSG_CHANNEL_REQUEST: 'channel-request',
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MSG_CHANNEL_SUCCESS: 'channel-success',
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MSG_CHANNEL_FAILURE: 'channel-failure'
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}
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# authentication request return codes:
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AUTH_SUCCESSFUL, AUTH_PARTIALLY_SUCCESSFUL, AUTH_FAILED = range(3)
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# channel request failed reasons:
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(OPEN_SUCCEEDED,
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OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED,
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OPEN_FAILED_CONNECT_FAILED,
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OPEN_FAILED_UNKNOWN_CHANNEL_TYPE,
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OPEN_FAILED_RESOURCE_SHORTAGE) = range(0, 5)
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CONNECTION_FAILED_CODE = {
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1: 'Administratively prohibited',
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2: 'Connect failed',
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3: 'Unknown channel type',
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4: 'Resource shortage'
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}
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DISCONNECT_SERVICE_NOT_AVAILABLE, DISCONNECT_AUTH_CANCELLED_BY_USER, \
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DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE = 7, 13, 14
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from Crypto import Random
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# keep a crypto-strong PRNG nearby
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rng = Random.new()
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import sys
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if sys.version_info < (2, 3):
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try:
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import logging
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except:
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import logging22 as logging
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import select
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PY22 = True
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import socket
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if not hasattr(socket, 'timeout'):
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class timeout(socket.error): pass
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socket.timeout = timeout
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del timeout
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else:
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import logging
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PY22 = False
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DEBUG = logging.DEBUG
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INFO = logging.INFO
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WARNING = logging.WARNING
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ERROR = logging.ERROR
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CRITICAL = logging.CRITICAL
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# Common IO/select/etc sleep period, in seconds
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io_sleep = 0.01
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