68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
# Copyright (c) 2014-2017 Red Hat, Inc
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import abc
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import enum
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import six
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VERSION_LENGTH = 12
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SUBTYPE_LENGTH = 4
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AUTH_STATUS_FAIL = b"\x00"
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AUTH_STATUS_PASS = b"\x01"
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class AuthType(enum.IntEnum):
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INVALID = 0
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NONE = 1
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VNC = 2
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RA2 = 5
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RA2NE = 6
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TIGHT = 16
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ULTRA = 17
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TLS = 18 # Used by VINO
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VENCRYPT = 19 # Used by VeNCrypt and QEMU
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SASL = 20 # SASL type used by VINO and QEMU
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ARD = 30 # Apple remote desktop (screen sharing)
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MSLOGON = 0xfffffffa # Used by UltraVNC
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@six.add_metaclass(abc.ABCMeta)
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class RFBAuthScheme(object):
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@abc.abstractmethod
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def security_type(self):
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"""Return the security type supported by this scheme
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Returns the nova.console.rfb.auth.AuthType.XX
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constant representing the scheme implemented.
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"""
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pass
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@abc.abstractmethod
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def security_handshake(self, compute_sock):
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"""Perform security-type-specific functionality.
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This method is expected to return the socket-like
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object used to communicate with the server securely.
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Should raise exception.RFBAuthHandshakeFailed if
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an error occurs
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:param compute_sock: socket connected to the compute node instance
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"""
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pass
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