/usr/share/pyshared/mod_pywebsocket/common.py is in python-mod-pywebsocket 0.7-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | # Copyright 2011, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Constants indicating WebSocket protocol version.
VERSION_HIXIE75 = -1
VERSION_HYBI00 = 0
VERSION_HYBI01 = 1
VERSION_HYBI02 = 2
VERSION_HYBI03 = 2
VERSION_HYBI04 = 4
VERSION_HYBI05 = 5
VERSION_HYBI06 = 6
VERSION_HYBI07 = 7
VERSION_HYBI08 = 8
VERSION_HYBI09 = 8
VERSION_HYBI10 = 8
VERSION_HYBI11 = 8
VERSION_HYBI12 = 8
VERSION_HYBI13 = 13
VERSION_HYBI14 = 13
VERSION_HYBI15 = 13
VERSION_HYBI16 = 13
VERSION_HYBI17 = 13
# Constants indicating WebSocket protocol latest version.
VERSION_HYBI_LATEST = VERSION_HYBI13
# Port numbers
DEFAULT_WEB_SOCKET_PORT = 80
DEFAULT_WEB_SOCKET_SECURE_PORT = 443
# Schemes
WEB_SOCKET_SCHEME = 'ws'
WEB_SOCKET_SECURE_SCHEME = 'wss'
# Frame opcodes defined in the spec.
OPCODE_CONTINUATION = 0x0
OPCODE_TEXT = 0x1
OPCODE_BINARY = 0x2
OPCODE_CLOSE = 0x8
OPCODE_PING = 0x9
OPCODE_PONG = 0xa
# UUIDs used by HyBi 04 and later opening handshake and frame masking.
WEBSOCKET_ACCEPT_UUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
# Opening handshake header names and expected values.
UPGRADE_HEADER = 'Upgrade'
WEBSOCKET_UPGRADE_TYPE = 'websocket'
WEBSOCKET_UPGRADE_TYPE_HIXIE75 = 'WebSocket'
CONNECTION_HEADER = 'Connection'
UPGRADE_CONNECTION_TYPE = 'Upgrade'
HOST_HEADER = 'Host'
ORIGIN_HEADER = 'Origin'
SEC_WEBSOCKET_ORIGIN_HEADER = 'Sec-WebSocket-Origin'
SEC_WEBSOCKET_KEY_HEADER = 'Sec-WebSocket-Key'
SEC_WEBSOCKET_ACCEPT_HEADER = 'Sec-WebSocket-Accept'
SEC_WEBSOCKET_VERSION_HEADER = 'Sec-WebSocket-Version'
SEC_WEBSOCKET_PROTOCOL_HEADER = 'Sec-WebSocket-Protocol'
SEC_WEBSOCKET_EXTENSIONS_HEADER = 'Sec-WebSocket-Extensions'
SEC_WEBSOCKET_DRAFT_HEADER = 'Sec-WebSocket-Draft'
SEC_WEBSOCKET_KEY1_HEADER = 'Sec-WebSocket-Key1'
SEC_WEBSOCKET_KEY2_HEADER = 'Sec-WebSocket-Key2'
SEC_WEBSOCKET_LOCATION_HEADER = 'Sec-WebSocket-Location'
# Extensions
DEFLATE_STREAM_EXTENSION = 'deflate-stream'
DEFLATE_FRAME_EXTENSION = 'deflate-frame'
# Status codes
# Code STATUS_CODE_NOT_AVAILABLE should not be used in actual frames. This code
# is exposed to JavaScript API as pseudo status code which represent actual
# frame does not have status code.
STATUS_NORMAL = 1000
STATUS_GOING_AWAY = 1001
STATUS_PROTOCOL_ERROR = 1002
STATUS_UNSUPPORTED = 1003
STATUS_CODE_NOT_AVAILABLE = 1005
STATUS_ABNORMAL_CLOSE = 1006
STATUS_INVALID_FRAME_PAYLOAD = 1007
STATUS_POLICY_VIOLATION = 1008
STATUS_MESSAGE_TOO_BIG = 1009
STATUS_MANDATORY_EXT = 1010
# HTTP status codes
HTTP_STATUS_BAD_REQUEST = 400
HTTP_STATUS_FORBIDDEN = 403
HTTP_STATUS_NOT_FOUND = 404
def is_control_opcode(opcode):
return (opcode >> 3) == 1
class ExtensionParameter(object):
"""Holds information about an extension which is exchanged on extension
negotiation in opening handshake.
"""
def __init__(self, name):
self._name = name
# TODO(tyoshino): Change the data structure to more efficient one such
# as dict when the spec changes to say like
# - Parameter names must be unique
# - The order of parameters is not significant
self._parameters = []
def name(self):
return self._name
def add_parameter(self, name, value):
self._parameters.append((name, value))
def get_parameters(self):
return self._parameters
def get_parameter_names(self):
return [name for name, unused_value in self._parameters]
def has_parameter(self, name):
for param_name, param_value in self._parameters:
if param_name == name:
return True
return False
def get_parameter_value(self, name):
for param_name, param_value in self._parameters:
if param_name == name:
return param_value
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