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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/mochitest/pywebsocket3
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/mochitest/pywebsocket3')
-rw-r--r--testing/mochitest/pywebsocket3/CONTRIBUTING30
-rw-r--r--testing/mochitest/pywebsocket3/LICENSE28
-rw-r--r--testing/mochitest/pywebsocket3/README-MOZILLA74
-rw-r--r--testing/mochitest/pywebsocket3/README.md36
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/__init__.py172
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/_stream_exceptions.py82
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/common.py273
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/dispatch.py385
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/extensions.py473
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/fast_masking.i98
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/__init__.py101
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/_base.py179
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py403
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/http_header_util.py254
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py99
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/msgutil.py214
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/request_handler.py321
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/server_util.py89
-rwxr-xr-xtesting/mochitest/pywebsocket3/mod_pywebsocket/standalone.py483
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/stream.py954
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/util.py405
-rw-r--r--testing/mochitest/pywebsocket3/mod_pywebsocket/websocket_server.py285
22 files changed, 5438 insertions, 0 deletions
diff --git a/testing/mochitest/pywebsocket3/CONTRIBUTING b/testing/mochitest/pywebsocket3/CONTRIBUTING
new file mode 100644
index 0000000000..f975be126f
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/CONTRIBUTING
@@ -0,0 +1,30 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+For instructions for contributing code, please read:
+https://github.com/google/pywebsocket/wiki/CodeReviewInstruction
+
+## Community Guidelines
+
+This project follows
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).
diff --git a/testing/mochitest/pywebsocket3/LICENSE b/testing/mochitest/pywebsocket3/LICENSE
new file mode 100644
index 0000000000..c91bea9025
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2020, 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.
diff --git a/testing/mochitest/pywebsocket3/README-MOZILLA b/testing/mochitest/pywebsocket3/README-MOZILLA
new file mode 100644
index 0000000000..e4d3960193
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/README-MOZILLA
@@ -0,0 +1,74 @@
+This pywebsocket code is mostly unchanged from the source at
+
+ https://github.com/GoogleChromeLabs/pywebsocket3
+
+--------------------------------------------------------------------------------
+STEPS TO UPDATE MOZILLA TO NEWER PYWEBSOCKET VERSION
+--------------------------------------------------------------------------------
+- Get new pywebsocket checkout from googlecode (into, for instance, 'src')
+
+ git clone https://github.com/GoogleChromeLabs/pywebsocket3 pywebsocket-read-only
+ cp -r pywebsocket-read-only/mod_pywebsocket testing/mochitest/pywebsocket3
+
+- hg add/rm appropriate files, and add/remove them from
+ testing/mochitest/moz.build
+
+- We need to apply the patch to hybi.py that makes HSTS work: (attached at end
+ of this README)
+
+- Test and make sure the code works:
+
+ mach mochitest dom/websocket/tests
+
+- If this doesn't take a look at the pywebsocket server log,
+ $OBJDIR/_tests/testing/mochitest/websock.log
+
+--------------------------------------------------------------------------------
+PATCH TO hybi.py for HSTS support:
+
+
+diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py
+--- a/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py
++++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py
+@@ -273,16 +273,19 @@ class Handshaker(object):
+ status=common.HTTP_STATUS_BAD_REQUEST)
+ raise VersionException('Unsupported version %r for header %s' %
+ (version, common.SEC_WEBSOCKET_VERSION_HEADER),
+ supported_versions=', '.join(
+ map(str, _SUPPORTED_VERSIONS)))
+
+ def _set_protocol(self):
+ self._request.ws_protocol = None
++ # MOZILLA
++ self._request.sts = None
++ # /MOZILLA
+
+ protocol_header = self._request.headers_in.get(
+ common.SEC_WEBSOCKET_PROTOCOL_HEADER)
+
+ if protocol_header is None:
+ self._request.ws_requested_protocols = None
+ return
+
+@@ -371,16 +374,21 @@ class Handshaker(object):
+ format_header(common.SEC_WEBSOCKET_PROTOCOL_HEADER,
+ self._request.ws_protocol))
+ if (self._request.ws_extensions is not None
+ and len(self._request.ws_extensions) != 0):
+ response.append(
+ format_header(
+ common.SEC_WEBSOCKET_EXTENSIONS_HEADER,
+ common.format_extensions(self._request.ws_extensions)))
++ # MOZILLA
++ if self._request.sts is not None:
++ response.append(format_header("Strict-Transport-Security",
++ self._request.sts))
++ # /MOZILLA
+
+ # Headers not specific for WebSocket
+ for name, value in self._request.extra_headers:
+ response.append(format_header(name, value))
+
+ response.append(u'\r\n')
+
+ return u''.join(response)
diff --git a/testing/mochitest/pywebsocket3/README.md b/testing/mochitest/pywebsocket3/README.md
new file mode 100644
index 0000000000..277cbe550c
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/README.md
@@ -0,0 +1,36 @@
+
+# pywebsocket3 #
+
+The pywebsocket project aims to provide a [WebSocket](https://tools.ietf.org/html/rfc6455) standalone server.
+
+pywebsocket is intended for **testing** or **experimental** purposes.
+
+Run this to read the general document:
+```
+$ pydoc mod_pywebsocket
+```
+
+Please see [Wiki](../../wiki) for more details.
+
+# INSTALL #
+
+To install this package to the system, run this:
+```
+$ python setup.py build
+$ sudo python setup.py install
+```
+
+To install this package as a normal user, run this instead:
+
+```
+$ python setup.py build
+$ python setup.py install --user
+```
+# LAUNCH #
+
+To use pywebsocket as standalone server, run this to read the document:
+```
+$ pydoc mod_pywebsocket.standalone
+```
+# Disclaimer #
+This is not an officially supported Google product
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/__init__.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/__init__.py
new file mode 100644
index 0000000000..28d5f5950f
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/__init__.py
@@ -0,0 +1,172 @@
+# 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.
+""" A Standalone WebSocket Server for testing purposes
+
+mod_pywebsocket is an API that provides WebSocket functionalities with
+a standalone WebSocket server. It is intended for testing or
+experimental purposes.
+
+Installation
+============
+1. Follow standalone server documentation to start running the
+standalone server. It can be read by running the following command:
+
+ $ pydoc mod_pywebsocket.standalone
+
+2. Once the standalone server is launched verify it by accessing
+http://localhost[:port]/console.html. Include the port number when
+specified on launch. If everything is working correctly, you
+will see a simple echo console.
+
+
+Writing WebSocket handlers
+==========================
+
+When a WebSocket request comes in, the resource name
+specified in the handshake is considered as if it is a file path under
+<websock_handlers> and the handler defined in
+<websock_handlers>/<resource_name>_wsh.py is invoked.
+
+For example, if the resource name is /example/chat, the handler defined in
+<websock_handlers>/example/chat_wsh.py is invoked.
+
+A WebSocket handler is composed of the following three functions:
+
+ web_socket_do_extra_handshake(request)
+ web_socket_transfer_data(request)
+ web_socket_passive_closing_handshake(request)
+
+where:
+ request: mod_python request.
+
+web_socket_do_extra_handshake is called during the handshake after the
+headers are successfully parsed and WebSocket properties (ws_origin,
+and ws_resource) are added to request. A handler
+can reject the request by raising an exception.
+
+A request object has the following properties that you can use during the
+extra handshake (web_socket_do_extra_handshake):
+- ws_resource
+- ws_origin
+- ws_version
+- ws_extensions
+- ws_deflate
+- ws_protocol
+- ws_requested_protocols
+
+The last two are a bit tricky. See the next subsection.
+
+
+Subprotocol Negotiation
+-----------------------
+
+ws_protocol is always set to None when
+web_socket_do_extra_handshake is called. If ws_requested_protocols is not
+None, you must choose one subprotocol from this list and set it to
+ws_protocol.
+
+Data Transfer
+-------------
+
+web_socket_transfer_data is called after the handshake completed
+successfully. A handler can receive/send messages from/to the client
+using request. mod_pywebsocket.msgutil module provides utilities
+for data transfer.
+
+You can receive a message by the following statement.
+
+ message = request.ws_stream.receive_message()
+
+This call blocks until any complete text frame arrives, and the payload data
+of the incoming frame will be stored into message. When you're using IETF
+HyBi 00 or later protocol, receive_message() will return None on receiving
+client-initiated closing handshake. When any error occurs, receive_message()
+will raise some exception.
+
+You can send a message by the following statement.
+
+ request.ws_stream.send_message(message)
+
+
+Closing Connection
+------------------
+
+Executing the following statement or just return-ing from
+web_socket_transfer_data cause connection close.
+
+ request.ws_stream.close_connection()
+
+close_connection will wait
+for closing handshake acknowledgement coming from the client. When it
+couldn't receive a valid acknowledgement, raises an exception.
+
+web_socket_passive_closing_handshake is called after the server receives
+incoming closing frame from the client peer immediately. You can specify
+code and reason by return values. They are sent as a outgoing closing frame
+from the server. A request object has the following properties that you can
+use in web_socket_passive_closing_handshake.
+- ws_close_code
+- ws_close_reason
+
+
+Threading
+---------
+
+A WebSocket handler must be thread-safe. The standalone
+server uses threads by default.
+
+
+Configuring WebSocket Extension Processors
+------------------------------------------
+
+See extensions.py for supported WebSocket extensions. Note that they are
+unstable and their APIs are subject to change substantially.
+
+A request object has these extension processing related attributes.
+
+- ws_requested_extensions:
+
+ A list of common.ExtensionParameter instances representing extension
+ parameters received from the client in the client's opening handshake.
+ You shouldn't modify it manually.
+
+- ws_extensions:
+
+ A list of common.ExtensionParameter instances representing extension
+ parameters to send back to the client in the server's opening handshake.
+ You shouldn't touch it directly. Instead, call methods on extension
+ processors.
+
+- ws_extension_processors:
+
+ A list of loaded extension processors. Find the processor for the
+ extension you want to configure from it, and call its methods.
+"""
+
+# vi:sts=4 sw=4 et tw=72
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/_stream_exceptions.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/_stream_exceptions.py
new file mode 100644
index 0000000000..b47878bc4a
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/_stream_exceptions.py
@@ -0,0 +1,82 @@
+# Copyright 2020, 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.
+"""Stream Exceptions.
+"""
+
+# Note: request.connection.write/read are used in this module, even though
+# mod_python document says that they should be used only in connection
+# handlers. Unfortunately, we have no other options. For example,
+# request.write/read are not suitable because they don't allow direct raw bytes
+# writing/reading.
+
+
+# Exceptions
+class ConnectionTerminatedException(Exception):
+ """This exception will be raised when a connection is terminated
+ unexpectedly.
+ """
+
+ pass
+
+
+class InvalidFrameException(ConnectionTerminatedException):
+ """This exception will be raised when we received an invalid frame we
+ cannot parse.
+ """
+
+ pass
+
+
+class BadOperationException(Exception):
+ """This exception will be raised when send_message() is called on
+ server-terminated connection or receive_message() is called on
+ client-terminated connection.
+ """
+
+ pass
+
+
+class UnsupportedFrameException(Exception):
+ """This exception will be raised when we receive a frame with flag, opcode
+ we cannot handle. Handlers can just catch and ignore this exception and
+ call receive_message() again to continue processing the next frame.
+ """
+
+ pass
+
+
+class InvalidUTF8Exception(Exception):
+ """This exception will be raised when we receive a text frame which
+ contains invalid UTF-8 strings.
+ """
+
+ pass
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/common.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/common.py
new file mode 100644
index 0000000000..9cb11f15cb
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/common.py
@@ -0,0 +1,273 @@
+# Copyright 2012, 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.
+"""This file must not depend on any module specific to the WebSocket protocol.
+"""
+
+from __future__ import absolute_import
+from mod_pywebsocket import http_header_util
+
+# Additional log level definitions.
+LOGLEVEL_FINE = 9
+
+# Constants indicating WebSocket protocol version.
+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
+
+# UUID for the opening handshake and frame masking.
+WEBSOCKET_ACCEPT_UUID = b'258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
+
+# Opening handshake header names and expected values.
+UPGRADE_HEADER = 'Upgrade'
+WEBSOCKET_UPGRADE_TYPE = 'websocket'
+CONNECTION_HEADER = 'Connection'
+UPGRADE_CONNECTION_TYPE = 'Upgrade'
+HOST_HEADER = 'Host'
+ORIGIN_HEADER = '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'
+
+# Extensions
+PERMESSAGE_DEFLATE_EXTENSION = 'permessage-deflate'
+
+# Status codes
+# Code STATUS_NO_STATUS_RECEIVED, STATUS_ABNORMAL_CLOSURE, and
+# STATUS_TLS_HANDSHAKE are pseudo codes to indicate specific error cases.
+# Could not be used for codes in actual closing frames.
+# Application level errors must use codes in the range
+# STATUS_USER_REGISTERED_BASE to STATUS_USER_PRIVATE_MAX. The codes in the
+# range STATUS_USER_REGISTERED_BASE to STATUS_USER_REGISTERED_MAX are managed
+# by IANA. Usually application must define user protocol level errors in the
+# range STATUS_USER_PRIVATE_BASE to STATUS_USER_PRIVATE_MAX.
+STATUS_NORMAL_CLOSURE = 1000
+STATUS_GOING_AWAY = 1001
+STATUS_PROTOCOL_ERROR = 1002
+STATUS_UNSUPPORTED_DATA = 1003
+STATUS_NO_STATUS_RECEIVED = 1005
+STATUS_ABNORMAL_CLOSURE = 1006
+STATUS_INVALID_FRAME_PAYLOAD_DATA = 1007
+STATUS_POLICY_VIOLATION = 1008
+STATUS_MESSAGE_TOO_BIG = 1009
+STATUS_MANDATORY_EXTENSION = 1010
+STATUS_INTERNAL_ENDPOINT_ERROR = 1011
+STATUS_TLS_HANDSHAKE = 1015
+STATUS_USER_REGISTERED_BASE = 3000
+STATUS_USER_REGISTERED_MAX = 3999
+STATUS_USER_PRIVATE_BASE = 4000
+STATUS_USER_PRIVATE_MAX = 4999
+# Following definitions are aliases to keep compatibility. Applications must
+# not use these obsoleted definitions anymore.
+STATUS_NORMAL = STATUS_NORMAL_CLOSURE
+STATUS_UNSUPPORTED = STATUS_UNSUPPORTED_DATA
+STATUS_CODE_NOT_AVAILABLE = STATUS_NO_STATUS_RECEIVED
+STATUS_ABNORMAL_CLOSE = STATUS_ABNORMAL_CLOSURE
+STATUS_INVALID_FRAME_PAYLOAD = STATUS_INVALID_FRAME_PAYLOAD_DATA
+STATUS_MANDATORY_EXT = STATUS_MANDATORY_EXTENSION
+
+# 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):
+ """This 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 the extension name."""
+ return self._name
+
+ def add_parameter(self, name, value):
+ """Add a parameter."""
+ self._parameters.append((name, value))
+
+ def get_parameters(self):
+ """Return the parameters."""
+ return self._parameters
+
+ def get_parameter_names(self):
+ """Return the names of the parameters."""
+ return [name for name, unused_value in self._parameters]
+
+ def has_parameter(self, name):
+ """Test if a parameter exists."""
+ for param_name, param_value in self._parameters:
+ if param_name == name:
+ return True
+ return False
+
+ def get_parameter_value(self, name):
+ """Get the value of a specific parameter."""
+ for param_name, param_value in self._parameters:
+ if param_name == name:
+ return param_value
+
+
+class ExtensionParsingException(Exception):
+ """Exception to handle errors in extension parsing."""
+ def __init__(self, name):
+ super(ExtensionParsingException, self).__init__(name)
+
+
+def _parse_extension_param(state, definition):
+ param_name = http_header_util.consume_token(state)
+
+ if param_name is None:
+ raise ExtensionParsingException('No valid parameter name found')
+
+ http_header_util.consume_lwses(state)
+
+ if not http_header_util.consume_string(state, '='):
+ definition.add_parameter(param_name, None)
+ return
+
+ http_header_util.consume_lwses(state)
+
+ # TODO(tyoshino): Add code to validate that parsed param_value is token
+ param_value = http_header_util.consume_token_or_quoted_string(state)
+ if param_value is None:
+ raise ExtensionParsingException(
+ 'No valid parameter value found on the right-hand side of '
+ 'parameter %r' % param_name)
+
+ definition.add_parameter(param_name, param_value)
+
+
+def _parse_extension(state):
+ extension_token = http_header_util.consume_token(state)
+ if extension_token is None:
+ return None
+
+ extension = ExtensionParameter(extension_token)
+
+ while True:
+ http_header_util.consume_lwses(state)
+
+ if not http_header_util.consume_string(state, ';'):
+ break
+
+ http_header_util.consume_lwses(state)
+
+ try:
+ _parse_extension_param(state, extension)
+ except ExtensionParsingException as e:
+ raise ExtensionParsingException(
+ 'Failed to parse parameter for %r (%r)' % (extension_token, e))
+
+ return extension
+
+
+def parse_extensions(data):
+ """Parse Sec-WebSocket-Extensions header value.
+
+ Returns a list of ExtensionParameter objects.
+ Leading LWSes must be trimmed.
+ """
+ state = http_header_util.ParsingState(data)
+
+ extension_list = []
+ while True:
+ extension = _parse_extension(state)
+ if extension is not None:
+ extension_list.append(extension)
+
+ http_header_util.consume_lwses(state)
+
+ if http_header_util.peek(state) is None:
+ break
+
+ if not http_header_util.consume_string(state, ','):
+ raise ExtensionParsingException(
+ 'Failed to parse Sec-WebSocket-Extensions header: '
+ 'Expected a comma but found %r' % http_header_util.peek(state))
+
+ http_header_util.consume_lwses(state)
+
+ if len(extension_list) == 0:
+ raise ExtensionParsingException('No valid extension entry found')
+
+ return extension_list
+
+
+def format_extension(extension):
+ """Format an ExtensionParameter object."""
+ formatted_params = [extension.name()]
+ for param_name, param_value in extension.get_parameters():
+ if param_value is None:
+ formatted_params.append(param_name)
+ else:
+ quoted_value = http_header_util.quote_if_necessary(param_value)
+ formatted_params.append('%s=%s' % (param_name, quoted_value))
+ return '; '.join(formatted_params)
+
+
+def format_extensions(extension_list):
+ """Format a list of ExtensionParameter objects."""
+ formatted_extension_list = []
+ for extension in extension_list:
+ formatted_extension_list.append(format_extension(extension))
+ return ', '.join(formatted_extension_list)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/dispatch.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/dispatch.py
new file mode 100644
index 0000000000..4ee943a5b8
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/dispatch.py
@@ -0,0 +1,385 @@
+# Copyright 2012, 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.
+"""Dispatch WebSocket request.
+"""
+
+from __future__ import absolute_import
+import logging
+import os
+import re
+import traceback
+
+from mod_pywebsocket import common
+from mod_pywebsocket import handshake
+from mod_pywebsocket import msgutil
+from mod_pywebsocket import stream
+from mod_pywebsocket import util
+
+_SOURCE_PATH_PATTERN = re.compile(r'(?i)_wsh\.py$')
+_SOURCE_SUFFIX = '_wsh.py'
+_DO_EXTRA_HANDSHAKE_HANDLER_NAME = 'web_socket_do_extra_handshake'
+_TRANSFER_DATA_HANDLER_NAME = 'web_socket_transfer_data'
+_PASSIVE_CLOSING_HANDSHAKE_HANDLER_NAME = (
+ 'web_socket_passive_closing_handshake')
+
+
+class DispatchException(Exception):
+ """Exception in dispatching WebSocket request."""
+ def __init__(self, name, status=common.HTTP_STATUS_NOT_FOUND):
+ super(DispatchException, self).__init__(name)
+ self.status = status
+
+
+def _default_passive_closing_handshake_handler(request):
+ """Default web_socket_passive_closing_handshake handler."""
+
+ return common.STATUS_NORMAL_CLOSURE, ''
+
+
+def _normalize_path(path):
+ """Normalize path.
+
+ Args:
+ path: the path to normalize.
+
+ Path is converted to the absolute path.
+ The input path can use either '\\' or '/' as the separator.
+ The normalized path always uses '/' regardless of the platform.
+ """
+
+ path = path.replace('\\', os.path.sep)
+ path = os.path.realpath(path)
+ path = path.replace('\\', '/')
+ return path
+
+
+def _create_path_to_resource_converter(base_dir):
+ """Returns a function that converts the path of a WebSocket handler source
+ file to a resource string by removing the path to the base directory from
+ its head, removing _SOURCE_SUFFIX from its tail, and replacing path
+ separators in it with '/'.
+
+ Args:
+ base_dir: the path to the base directory.
+ """
+
+ base_dir = _normalize_path(base_dir)
+
+ base_len = len(base_dir)
+ suffix_len = len(_SOURCE_SUFFIX)
+
+ def converter(path):
+ if not path.endswith(_SOURCE_SUFFIX):
+ return None
+ # _normalize_path must not be used because resolving symlink breaks
+ # following path check.
+ path = path.replace('\\', '/')
+ if not path.startswith(base_dir):
+ return None
+ return path[base_len:-suffix_len]
+
+ return converter
+
+
+def _enumerate_handler_file_paths(directory):
+ """Returns a generator that enumerates WebSocket Handler source file names
+ in the given directory.
+ """
+
+ for root, unused_dirs, files in os.walk(directory):
+ for base in files:
+ path = os.path.join(root, base)
+ if _SOURCE_PATH_PATTERN.search(path):
+ yield path
+
+
+class _HandlerSuite(object):
+ """A handler suite holder class."""
+ def __init__(self, do_extra_handshake, transfer_data,
+ passive_closing_handshake):
+ self.do_extra_handshake = do_extra_handshake
+ self.transfer_data = transfer_data
+ self.passive_closing_handshake = passive_closing_handshake
+
+
+def _source_handler_file(handler_definition):
+ """Source a handler definition string.
+
+ Args:
+ handler_definition: a string containing Python statements that define
+ handler functions.
+ """
+
+ global_dic = {}
+ try:
+ # This statement is gramatically different in python 2 and 3.
+ # Hence, yapf will complain about this. To overcome this, we disable
+ # yapf for this line.
+ exec(handler_definition, global_dic) # yapf: disable
+ except Exception:
+ raise DispatchException('Error in sourcing handler:' +
+ traceback.format_exc())
+ passive_closing_handshake_handler = None
+ try:
+ passive_closing_handshake_handler = _extract_handler(
+ global_dic, _PASSIVE_CLOSING_HANDSHAKE_HANDLER_NAME)
+ except Exception:
+ passive_closing_handshake_handler = (
+ _default_passive_closing_handshake_handler)
+ return _HandlerSuite(
+ _extract_handler(global_dic, _DO_EXTRA_HANDSHAKE_HANDLER_NAME),
+ _extract_handler(global_dic, _TRANSFER_DATA_HANDLER_NAME),
+ passive_closing_handshake_handler)
+
+
+def _extract_handler(dic, name):
+ """Extracts a callable with the specified name from the given dictionary
+ dic.
+ """
+
+ if name not in dic:
+ raise DispatchException('%s is not defined.' % name)
+ handler = dic[name]
+ if not callable(handler):
+ raise DispatchException('%s is not callable.' % name)
+ return handler
+
+
+class Dispatcher(object):
+ """Dispatches WebSocket requests.
+
+ This class maintains a map from resource name to handlers.
+ """
+ def __init__(self,
+ root_dir,
+ scan_dir=None,
+ allow_handlers_outside_root_dir=True):
+ """Construct an instance.
+
+ Args:
+ root_dir: The directory where handler definition files are
+ placed.
+ scan_dir: The directory where handler definition files are
+ searched. scan_dir must be a directory under root_dir,
+ including root_dir itself. If scan_dir is None,
+ root_dir is used as scan_dir. scan_dir can be useful
+ in saving scan time when root_dir contains many
+ subdirectories.
+ allow_handlers_outside_root_dir: Scans handler files even if their
+ canonical path is not under root_dir.
+ """
+
+ self._logger = util.get_class_logger(self)
+
+ self._handler_suite_map = {}
+ self._source_warnings = []
+ if scan_dir is None:
+ scan_dir = root_dir
+ if not os.path.realpath(scan_dir).startswith(
+ os.path.realpath(root_dir)):
+ raise DispatchException('scan_dir:%s must be a directory under '
+ 'root_dir:%s.' % (scan_dir, root_dir))
+ self._source_handler_files_in_dir(root_dir, scan_dir,
+ allow_handlers_outside_root_dir)
+
+ def add_resource_path_alias(self, alias_resource_path,
+ existing_resource_path):
+ """Add resource path alias.
+
+ Once added, request to alias_resource_path would be handled by
+ handler registered for existing_resource_path.
+
+ Args:
+ alias_resource_path: alias resource path
+ existing_resource_path: existing resource path
+ """
+ try:
+ handler_suite = self._handler_suite_map[existing_resource_path]
+ self._handler_suite_map[alias_resource_path] = handler_suite
+ except KeyError:
+ raise DispatchException('No handler for: %r' %
+ existing_resource_path)
+
+ def source_warnings(self):
+ """Return warnings in sourcing handlers."""
+
+ return self._source_warnings
+
+ def do_extra_handshake(self, request):
+ """Do extra checking in WebSocket handshake.
+
+ Select a handler based on request.uri and call its
+ web_socket_do_extra_handshake function.
+
+ Args:
+ request: mod_python request.
+
+ Raises:
+ DispatchException: when handler was not found
+ AbortedByUserException: when user handler abort connection
+ HandshakeException: when opening handshake failed
+ """
+
+ handler_suite = self.get_handler_suite(request.ws_resource)
+ if handler_suite is None:
+ raise DispatchException('No handler for: %r' % request.ws_resource)
+ do_extra_handshake_ = handler_suite.do_extra_handshake
+ try:
+ do_extra_handshake_(request)
+ except handshake.AbortedByUserException as e:
+ # Re-raise to tell the caller of this function to finish this
+ # connection without sending any error.
+ self._logger.debug('%s', traceback.format_exc())
+ raise
+ except Exception as e:
+ util.prepend_message_to_exception(
+ '%s raised exception for %s: ' %
+ (_DO_EXTRA_HANDSHAKE_HANDLER_NAME, request.ws_resource), e)
+ raise handshake.HandshakeException(e, common.HTTP_STATUS_FORBIDDEN)
+
+ def transfer_data(self, request):
+ """Let a handler transfer_data with a WebSocket client.
+
+ Select a handler based on request.ws_resource and call its
+ web_socket_transfer_data function.
+
+ Args:
+ request: mod_python request.
+
+ Raises:
+ DispatchException: when handler was not found
+ AbortedByUserException: when user handler abort connection
+ """
+
+ # TODO(tyoshino): Terminate underlying TCP connection if possible.
+ try:
+ handler_suite = self.get_handler_suite(request.ws_resource)
+ if handler_suite is None:
+ raise DispatchException('No handler for: %r' %
+ request.ws_resource)
+ transfer_data_ = handler_suite.transfer_data
+ transfer_data_(request)
+
+ if not request.server_terminated:
+ request.ws_stream.close_connection()
+ # Catch non-critical exceptions the handler didn't handle.
+ except handshake.AbortedByUserException as e:
+ self._logger.debug('%s', traceback.format_exc())
+ raise
+ except msgutil.BadOperationException as e:
+ self._logger.debug('%s', e)
+ request.ws_stream.close_connection(
+ common.STATUS_INTERNAL_ENDPOINT_ERROR)
+ except msgutil.InvalidFrameException as e:
+ # InvalidFrameException must be caught before
+ # ConnectionTerminatedException that catches InvalidFrameException.
+ self._logger.debug('%s', e)
+ request.ws_stream.close_connection(common.STATUS_PROTOCOL_ERROR)
+ except msgutil.UnsupportedFrameException as e:
+ self._logger.debug('%s', e)
+ request.ws_stream.close_connection(common.STATUS_UNSUPPORTED_DATA)
+ except stream.InvalidUTF8Exception as e:
+ self._logger.debug('%s', e)
+ request.ws_stream.close_connection(
+ common.STATUS_INVALID_FRAME_PAYLOAD_DATA)
+ except msgutil.ConnectionTerminatedException as e:
+ self._logger.debug('%s', e)
+ except Exception as e:
+ # Any other exceptions are forwarded to the caller of this
+ # function.
+ util.prepend_message_to_exception(
+ '%s raised exception for %s: ' %
+ (_TRANSFER_DATA_HANDLER_NAME, request.ws_resource), e)
+ raise
+
+ def passive_closing_handshake(self, request):
+ """Prepare code and reason for responding client initiated closing
+ handshake.
+ """
+
+ handler_suite = self.get_handler_suite(request.ws_resource)
+ if handler_suite is None:
+ return _default_passive_closing_handshake_handler(request)
+ return handler_suite.passive_closing_handshake(request)
+
+ def get_handler_suite(self, resource):
+ """Retrieves two handlers (one for extra handshake processing, and one
+ for data transfer) for the given request as a HandlerSuite object.
+ """
+
+ fragment = None
+ if '#' in resource:
+ resource, fragment = resource.split('#', 1)
+ if '?' in resource:
+ resource = resource.split('?', 1)[0]
+ handler_suite = self._handler_suite_map.get(resource)
+ if handler_suite and fragment:
+ raise DispatchException(
+ 'Fragment identifiers MUST NOT be used on WebSocket URIs',
+ common.HTTP_STATUS_BAD_REQUEST)
+ return handler_suite
+
+ def _source_handler_files_in_dir(self, root_dir, scan_dir,
+ allow_handlers_outside_root_dir):
+ """Source all the handler source files in the scan_dir directory.
+
+ The resource path is determined relative to root_dir.
+ """
+
+ # We build a map from resource to handler code assuming that there's
+ # only one path from root_dir to scan_dir and it can be obtained by
+ # comparing realpath of them.
+
+ # Here we cannot use abspath. See
+ # https://bugs.webkit.org/show_bug.cgi?id=31603
+
+ convert = _create_path_to_resource_converter(root_dir)
+ scan_realpath = os.path.realpath(scan_dir)
+ root_realpath = os.path.realpath(root_dir)
+ for path in _enumerate_handler_file_paths(scan_realpath):
+ if (not allow_handlers_outside_root_dir and
+ (not os.path.realpath(path).startswith(root_realpath))):
+ self._logger.debug(
+ 'Canonical path of %s is not under root directory' % path)
+ continue
+ try:
+ with open(path) as handler_file:
+ handler_suite = _source_handler_file(handler_file.read())
+ except DispatchException as e:
+ self._source_warnings.append('%s: %s' % (path, e))
+ continue
+ resource = convert(path)
+ if resource is None:
+ self._logger.debug('Path to resource conversion on %s failed' %
+ path)
+ else:
+ self._handler_suite_map[convert(path)] = handler_suite
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/extensions.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/extensions.py
new file mode 100644
index 0000000000..344539f6fc
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/extensions.py
@@ -0,0 +1,473 @@
+# Copyright 2012, 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.
+
+from __future__ import absolute_import
+from mod_pywebsocket import common
+from mod_pywebsocket import util
+from mod_pywebsocket.http_header_util import quote_if_necessary
+
+# The list of available server side extension processor classes.
+_available_processors = {}
+
+
+class ExtensionProcessorInterface(object):
+ def __init__(self, request):
+ self._logger = util.get_class_logger(self)
+
+ self._request = request
+ self._active = True
+
+ def request(self):
+ return self._request
+
+ def name(self):
+ return None
+
+ def check_consistency_with_other_processors(self, processors):
+ pass
+
+ def set_active(self, active):
+ self._active = active
+
+ def is_active(self):
+ return self._active
+
+ def _get_extension_response_internal(self):
+ return None
+
+ def get_extension_response(self):
+ if not self._active:
+ self._logger.debug('Extension %s is deactivated', self.name())
+ return None
+
+ response = self._get_extension_response_internal()
+ if response is None:
+ self._active = False
+ return response
+
+ def _setup_stream_options_internal(self, stream_options):
+ pass
+
+ def setup_stream_options(self, stream_options):
+ if self._active:
+ self._setup_stream_options_internal(stream_options)
+
+
+def _log_outgoing_compression_ratio(logger, original_bytes, filtered_bytes,
+ average_ratio):
+ # Print inf when ratio is not available.
+ ratio = float('inf')
+ if original_bytes != 0:
+ ratio = float(filtered_bytes) / original_bytes
+
+ logger.debug('Outgoing compression ratio: %f (average: %f)' %
+ (ratio, average_ratio))
+
+
+def _log_incoming_compression_ratio(logger, received_bytes, filtered_bytes,
+ average_ratio):
+ # Print inf when ratio is not available.
+ ratio = float('inf')
+ if filtered_bytes != 0:
+ ratio = float(received_bytes) / filtered_bytes
+
+ logger.debug('Incoming compression ratio: %f (average: %f)' %
+ (ratio, average_ratio))
+
+
+def _parse_window_bits(bits):
+ """Return parsed integer value iff the given string conforms to the
+ grammar of the window bits extension parameters.
+ """
+
+ if bits is None:
+ raise ValueError('Value is required')
+
+ # For non integer values such as "10.0", ValueError will be raised.
+ int_bits = int(bits)
+
+ # First condition is to drop leading zero case e.g. "08".
+ if bits != str(int_bits) or int_bits < 8 or int_bits > 15:
+ raise ValueError('Invalid value: %r' % bits)
+
+ return int_bits
+
+
+class _AverageRatioCalculator(object):
+ """Stores total bytes of original and result data, and calculates average
+ result / original ratio.
+ """
+ def __init__(self):
+ self._total_original_bytes = 0
+ self._total_result_bytes = 0
+
+ def add_original_bytes(self, value):
+ self._total_original_bytes += value
+
+ def add_result_bytes(self, value):
+ self._total_result_bytes += value
+
+ def get_average_ratio(self):
+ if self._total_original_bytes != 0:
+ return (float(self._total_result_bytes) /
+ self._total_original_bytes)
+ else:
+ return float('inf')
+
+
+class PerMessageDeflateExtensionProcessor(ExtensionProcessorInterface):
+ """permessage-deflate extension processor.
+
+ Specification:
+ http://tools.ietf.org/html/draft-ietf-hybi-permessage-compression-08
+ """
+
+ _SERVER_MAX_WINDOW_BITS_PARAM = 'server_max_window_bits'
+ _SERVER_NO_CONTEXT_TAKEOVER_PARAM = 'server_no_context_takeover'
+ _CLIENT_MAX_WINDOW_BITS_PARAM = 'client_max_window_bits'
+ _CLIENT_NO_CONTEXT_TAKEOVER_PARAM = 'client_no_context_takeover'
+
+ def __init__(self, request):
+ """Construct PerMessageDeflateExtensionProcessor."""
+
+ ExtensionProcessorInterface.__init__(self, request)
+ self._logger = util.get_class_logger(self)
+
+ self._preferred_client_max_window_bits = None
+ self._client_no_context_takeover = False
+
+ def name(self):
+ # This method returns "deflate" (not "permessage-deflate") for
+ # compatibility.
+ return 'deflate'
+
+ def _get_extension_response_internal(self):
+ for name in self._request.get_parameter_names():
+ if name not in [
+ self._SERVER_MAX_WINDOW_BITS_PARAM,
+ self._SERVER_NO_CONTEXT_TAKEOVER_PARAM,
+ self._CLIENT_MAX_WINDOW_BITS_PARAM
+ ]:
+ self._logger.debug('Unknown parameter: %r', name)
+ return None
+
+ server_max_window_bits = None
+ if self._request.has_parameter(self._SERVER_MAX_WINDOW_BITS_PARAM):
+ server_max_window_bits = self._request.get_parameter_value(
+ self._SERVER_MAX_WINDOW_BITS_PARAM)
+ try:
+ server_max_window_bits = _parse_window_bits(
+ server_max_window_bits)
+ except ValueError as e:
+ self._logger.debug('Bad %s parameter: %r',
+ self._SERVER_MAX_WINDOW_BITS_PARAM, e)
+ return None
+
+ server_no_context_takeover = self._request.has_parameter(
+ self._SERVER_NO_CONTEXT_TAKEOVER_PARAM)
+ if (server_no_context_takeover and self._request.get_parameter_value(
+ self._SERVER_NO_CONTEXT_TAKEOVER_PARAM) is not None):
+ self._logger.debug('%s parameter must not have a value: %r',
+ self._SERVER_NO_CONTEXT_TAKEOVER_PARAM,
+ server_no_context_takeover)
+ return None
+
+ # client_max_window_bits from a client indicates whether the client can
+ # accept client_max_window_bits from a server or not.
+ client_client_max_window_bits = self._request.has_parameter(
+ self._CLIENT_MAX_WINDOW_BITS_PARAM)
+ if (client_client_max_window_bits
+ and self._request.get_parameter_value(
+ self._CLIENT_MAX_WINDOW_BITS_PARAM) is not None):
+ self._logger.debug(
+ '%s parameter must not have a value in a '
+ 'client\'s opening handshake: %r',
+ self._CLIENT_MAX_WINDOW_BITS_PARAM,
+ client_client_max_window_bits)
+ return None
+
+ self._rfc1979_deflater = util._RFC1979Deflater(
+ server_max_window_bits, server_no_context_takeover)
+
+ # Note that we prepare for incoming messages compressed with window
+ # bits upto 15 regardless of the client_max_window_bits value to be
+ # sent to the client.
+ self._rfc1979_inflater = util._RFC1979Inflater()
+
+ self._framer = _PerMessageDeflateFramer(server_max_window_bits,
+ server_no_context_takeover)
+ self._framer.set_bfinal(False)
+ self._framer.set_compress_outgoing_enabled(True)
+
+ response = common.ExtensionParameter(self._request.name())
+
+ if server_max_window_bits is not None:
+ response.add_parameter(self._SERVER_MAX_WINDOW_BITS_PARAM,
+ str(server_max_window_bits))
+
+ if server_no_context_takeover:
+ response.add_parameter(self._SERVER_NO_CONTEXT_TAKEOVER_PARAM,
+ None)
+
+ if self._preferred_client_max_window_bits is not None:
+ if not client_client_max_window_bits:
+ self._logger.debug(
+ 'Processor is configured to use %s but '
+ 'the client cannot accept it',
+ self._CLIENT_MAX_WINDOW_BITS_PARAM)
+ return None
+ response.add_parameter(self._CLIENT_MAX_WINDOW_BITS_PARAM,
+ str(self._preferred_client_max_window_bits))
+
+ if self._client_no_context_takeover:
+ response.add_parameter(self._CLIENT_NO_CONTEXT_TAKEOVER_PARAM,
+ None)
+
+ self._logger.debug('Enable %s extension ('
+ 'request: server_max_window_bits=%s; '
+ 'server_no_context_takeover=%r, '
+ 'response: client_max_window_bits=%s; '
+ 'client_no_context_takeover=%r)' %
+ (self._request.name(), server_max_window_bits,
+ server_no_context_takeover,
+ self._preferred_client_max_window_bits,
+ self._client_no_context_takeover))
+
+ return response
+
+ def _setup_stream_options_internal(self, stream_options):
+ self._framer.setup_stream_options(stream_options)
+
+ def set_client_max_window_bits(self, value):
+ """If this option is specified, this class adds the
+ client_max_window_bits extension parameter to the handshake response,
+ but doesn't reduce the LZ77 sliding window size of its inflater.
+ I.e., you can use this for testing client implementation but cannot
+ reduce memory usage of this class.
+
+ If this method has been called with True and an offer without the
+ client_max_window_bits extension parameter is received,
+ - (When processing the permessage-deflate extension) this processor
+ declines the request.
+ - (When processing the permessage-compress extension) this processor
+ accepts the request.
+ """
+
+ self._preferred_client_max_window_bits = value
+
+ def set_client_no_context_takeover(self, value):
+ """If this option is specified, this class adds the
+ client_no_context_takeover extension parameter to the handshake
+ response, but doesn't reset inflater for each message. I.e., you can
+ use this for testing client implementation but cannot reduce memory
+ usage of this class.
+ """
+
+ self._client_no_context_takeover = value
+
+ def set_bfinal(self, value):
+ self._framer.set_bfinal(value)
+
+ def enable_outgoing_compression(self):
+ self._framer.set_compress_outgoing_enabled(True)
+
+ def disable_outgoing_compression(self):
+ self._framer.set_compress_outgoing_enabled(False)
+
+
+class _PerMessageDeflateFramer(object):
+ """A framer for extensions with per-message DEFLATE feature."""
+ def __init__(self, deflate_max_window_bits, deflate_no_context_takeover):
+ self._logger = util.get_class_logger(self)
+
+ self._rfc1979_deflater = util._RFC1979Deflater(
+ deflate_max_window_bits, deflate_no_context_takeover)
+
+ self._rfc1979_inflater = util._RFC1979Inflater()
+
+ self._bfinal = False
+
+ self._compress_outgoing_enabled = False
+
+ # True if a message is fragmented and compression is ongoing.
+ self._compress_ongoing = False
+
+ # Calculates
+ # (Total outgoing bytes supplied to this filter) /
+ # (Total bytes sent to the network after applying this filter)
+ self._outgoing_average_ratio_calculator = _AverageRatioCalculator()
+
+ # Calculates
+ # (Total bytes received from the network) /
+ # (Total incoming bytes obtained after applying this filter)
+ self._incoming_average_ratio_calculator = _AverageRatioCalculator()
+
+ def set_bfinal(self, value):
+ self._bfinal = value
+
+ def set_compress_outgoing_enabled(self, value):
+ self._compress_outgoing_enabled = value
+
+ def _process_incoming_message(self, message, decompress):
+ if not decompress:
+ return message
+
+ received_payload_size = len(message)
+ self._incoming_average_ratio_calculator.add_result_bytes(
+ received_payload_size)
+
+ message = self._rfc1979_inflater.filter(message)
+
+ filtered_payload_size = len(message)
+ self._incoming_average_ratio_calculator.add_original_bytes(
+ filtered_payload_size)
+
+ _log_incoming_compression_ratio(
+ self._logger, received_payload_size, filtered_payload_size,
+ self._incoming_average_ratio_calculator.get_average_ratio())
+
+ return message
+
+ def _process_outgoing_message(self, message, end, binary):
+ if not binary:
+ message = message.encode('utf-8')
+
+ if not self._compress_outgoing_enabled:
+ return message
+
+ original_payload_size = len(message)
+ self._outgoing_average_ratio_calculator.add_original_bytes(
+ original_payload_size)
+
+ message = self._rfc1979_deflater.filter(message,
+ end=end,
+ bfinal=self._bfinal)
+
+ filtered_payload_size = len(message)
+ self._outgoing_average_ratio_calculator.add_result_bytes(
+ filtered_payload_size)
+
+ _log_outgoing_compression_ratio(
+ self._logger, original_payload_size, filtered_payload_size,
+ self._outgoing_average_ratio_calculator.get_average_ratio())
+
+ if not self._compress_ongoing:
+ self._outgoing_frame_filter.set_compression_bit()
+ self._compress_ongoing = not end
+ return message
+
+ def _process_incoming_frame(self, frame):
+ if frame.rsv1 == 1 and not common.is_control_opcode(frame.opcode):
+ self._incoming_message_filter.decompress_next_message()
+ frame.rsv1 = 0
+
+ def _process_outgoing_frame(self, frame, compression_bit):
+ if (not compression_bit or common.is_control_opcode(frame.opcode)):
+ return
+
+ frame.rsv1 = 1
+
+ def setup_stream_options(self, stream_options):
+ """Creates filters and sets them to the StreamOptions."""
+ class _OutgoingMessageFilter(object):
+ def __init__(self, parent):
+ self._parent = parent
+
+ def filter(self, message, end=True, binary=False):
+ return self._parent._process_outgoing_message(
+ message, end, binary)
+
+ class _IncomingMessageFilter(object):
+ def __init__(self, parent):
+ self._parent = parent
+ self._decompress_next_message = False
+
+ def decompress_next_message(self):
+ self._decompress_next_message = True
+
+ def filter(self, message):
+ message = self._parent._process_incoming_message(
+ message, self._decompress_next_message)
+ self._decompress_next_message = False
+ return message
+
+ self._outgoing_message_filter = _OutgoingMessageFilter(self)
+ self._incoming_message_filter = _IncomingMessageFilter(self)
+ stream_options.outgoing_message_filters.append(
+ self._outgoing_message_filter)
+ stream_options.incoming_message_filters.append(
+ self._incoming_message_filter)
+
+ class _OutgoingFrameFilter(object):
+ def __init__(self, parent):
+ self._parent = parent
+ self._set_compression_bit = False
+
+ def set_compression_bit(self):
+ self._set_compression_bit = True
+
+ def filter(self, frame):
+ self._parent._process_outgoing_frame(frame,
+ self._set_compression_bit)
+ self._set_compression_bit = False
+
+ class _IncomingFrameFilter(object):
+ def __init__(self, parent):
+ self._parent = parent
+
+ def filter(self, frame):
+ self._parent._process_incoming_frame(frame)
+
+ self._outgoing_frame_filter = _OutgoingFrameFilter(self)
+ self._incoming_frame_filter = _IncomingFrameFilter(self)
+ stream_options.outgoing_frame_filters.append(
+ self._outgoing_frame_filter)
+ stream_options.incoming_frame_filters.append(
+ self._incoming_frame_filter)
+
+ stream_options.encode_text_message_to_utf8 = False
+
+
+_available_processors[common.PERMESSAGE_DEFLATE_EXTENSION] = (
+ PerMessageDeflateExtensionProcessor)
+
+
+def get_extension_processor(extension_request):
+ """Given an ExtensionParameter representing an extension offer received
+ from a client, configures and returns an instance of the corresponding
+ extension processor class.
+ """
+
+ processor_class = _available_processors.get(extension_request.name())
+ if processor_class is None:
+ return None
+ return processor_class(extension_request)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/fast_masking.i b/testing/mochitest/pywebsocket3/mod_pywebsocket/fast_masking.i
new file mode 100644
index 0000000000..ddaad27f53
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/fast_masking.i
@@ -0,0 +1,98 @@
+// Copyright 2013, 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.
+
+
+%module fast_masking
+
+%include "cstring.i"
+
+%{
+#include <cstring>
+
+#ifdef __SSE2__
+#include <emmintrin.h>
+#endif
+%}
+
+%apply (char *STRING, int LENGTH) {
+ (const char* payload, int payload_length),
+ (const char* masking_key, int masking_key_length) };
+%cstring_output_allocate_size(
+ char** result, int* result_length, delete [] *$1);
+
+%inline %{
+
+void mask(
+ const char* payload, int payload_length,
+ const char* masking_key, int masking_key_length,
+ int masking_key_index,
+ char** result, int* result_length) {
+ *result = new char[payload_length];
+ *result_length = payload_length;
+ memcpy(*result, payload, payload_length);
+
+ char* cursor = *result;
+ char* cursor_end = *result + *result_length;
+
+#ifdef __SSE2__
+ while ((cursor < cursor_end) &&
+ (reinterpret_cast<size_t>(cursor) & 0xf)) {
+ *cursor ^= masking_key[masking_key_index];
+ ++cursor;
+ masking_key_index = (masking_key_index + 1) % masking_key_length;
+ }
+ if (cursor == cursor_end) {
+ return;
+ }
+
+ const int kBlockSize = 16;
+ __m128i masking_key_block;
+ for (int i = 0; i < kBlockSize; ++i) {
+ *(reinterpret_cast<char*>(&masking_key_block) + i) =
+ masking_key[masking_key_index];
+ masking_key_index = (masking_key_index + 1) % masking_key_length;
+ }
+
+ while (cursor + kBlockSize <= cursor_end) {
+ __m128i payload_block =
+ _mm_load_si128(reinterpret_cast<__m128i*>(cursor));
+ _mm_stream_si128(reinterpret_cast<__m128i*>(cursor),
+ _mm_xor_si128(payload_block, masking_key_block));
+ cursor += kBlockSize;
+ }
+#endif
+
+ while (cursor < cursor_end) {
+ *cursor ^= masking_key[masking_key_index];
+ ++cursor;
+ masking_key_index = (masking_key_index + 1) % masking_key_length;
+ }
+}
+
+%}
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/__init__.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/__init__.py
new file mode 100644
index 0000000000..82be5ae9fd
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/__init__.py
@@ -0,0 +1,101 @@
+# 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.
+"""WebSocket opening handshake processor. This class try to apply available
+opening handshake processors for each protocol version until a connection is
+successfully established.
+"""
+
+from __future__ import absolute_import
+import logging
+
+from mod_pywebsocket import common
+from mod_pywebsocket.handshake import hybi
+# Export AbortedByUserException, HandshakeException, and VersionException
+# symbol from this module.
+from mod_pywebsocket.handshake._base import AbortedByUserException
+from mod_pywebsocket.handshake._base import HandshakeException
+from mod_pywebsocket.handshake._base import VersionException
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def do_handshake(request, dispatcher):
+ """Performs WebSocket handshake.
+
+ Args:
+ request: mod_python request.
+ dispatcher: Dispatcher (dispatch.Dispatcher).
+
+ Handshaker will add attributes such as ws_resource in performing
+ handshake.
+ """
+
+ _LOGGER.debug('Client\'s opening handshake resource: %r', request.uri)
+ # To print mimetools.Message as escaped one-line string, we converts
+ # headers_in to dict object. Without conversion, if we use %r, it just
+ # prints the type and address, and if we use %s, it prints the original
+ # header string as multiple lines.
+ #
+ # Both mimetools.Message and MpTable_Type of mod_python can be
+ # converted to dict.
+ #
+ # mimetools.Message.__str__ returns the original header string.
+ # dict(mimetools.Message object) returns the map from header names to
+ # header values. While MpTable_Type doesn't have such __str__ but just
+ # __repr__ which formats itself as well as dictionary object.
+ _LOGGER.debug('Client\'s opening handshake headers: %r',
+ dict(request.headers_in))
+
+ handshakers = []
+ handshakers.append(('RFC 6455', hybi.Handshaker(request, dispatcher)))
+
+ for name, handshaker in handshakers:
+ _LOGGER.debug('Trying protocol version %s', name)
+ try:
+ handshaker.do_handshake()
+ _LOGGER.info('Established (%s protocol)', name)
+ return
+ except HandshakeException as e:
+ _LOGGER.debug(
+ 'Failed to complete opening handshake as %s protocol: %r',
+ name, e)
+ if e.status:
+ raise e
+ except AbortedByUserException as e:
+ raise
+ except VersionException as e:
+ raise
+
+ # TODO(toyoshim): Add a test to cover the case all handshakers fail.
+ raise HandshakeException(
+ 'Failed to complete opening handshake for all available protocols',
+ status=common.HTTP_STATUS_BAD_REQUEST)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/_base.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/_base.py
new file mode 100644
index 0000000000..358dd8d497
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/_base.py
@@ -0,0 +1,179 @@
+# Copyright 2012, 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.
+"""Common functions and exceptions used by WebSocket opening handshake
+processors.
+"""
+
+from __future__ import absolute_import
+from mod_pywebsocket import common
+from mod_pywebsocket import http_header_util
+
+
+class AbortedByUserException(Exception):
+ """Exception for aborting a connection intentionally.
+
+ If this exception is raised in do_extra_handshake handler, the connection
+ will be abandoned. No other WebSocket or HTTP(S) handler will be invoked.
+
+ If this exception is raised in transfer_data_handler, the connection will
+ be closed without closing handshake. No other WebSocket or HTTP(S) handler
+ will be invoked.
+ """
+
+ pass
+
+
+class HandshakeException(Exception):
+ """This exception will be raised when an error occurred while processing
+ WebSocket initial handshake.
+ """
+ def __init__(self, name, status=None):
+ super(HandshakeException, self).__init__(name)
+ self.status = status
+
+
+class VersionException(Exception):
+ """This exception will be raised when a version of client request does not
+ match with version the server supports.
+ """
+ def __init__(self, name, supported_versions=''):
+ """Construct an instance.
+
+ Args:
+ supported_version: a str object to show supported hybi versions.
+ (e.g. '13')
+ """
+ super(VersionException, self).__init__(name)
+ self.supported_versions = supported_versions
+
+
+def get_default_port(is_secure):
+ if is_secure:
+ return common.DEFAULT_WEB_SOCKET_SECURE_PORT
+ else:
+ return common.DEFAULT_WEB_SOCKET_PORT
+
+
+def validate_subprotocol(subprotocol):
+ """Validate a value in the Sec-WebSocket-Protocol field.
+
+ See the Section 4.1., 4.2.2., and 4.3. of RFC 6455.
+ """
+
+ if not subprotocol:
+ raise HandshakeException('Invalid subprotocol name: empty')
+
+ # Parameter should be encoded HTTP token.
+ state = http_header_util.ParsingState(subprotocol)
+ token = http_header_util.consume_token(state)
+ rest = http_header_util.peek(state)
+ # If |rest| is not None, |subprotocol| is not one token or invalid. If
+ # |rest| is None, |token| must not be None because |subprotocol| is
+ # concatenation of |token| and |rest| and is not None.
+ if rest is not None:
+ raise HandshakeException('Invalid non-token string in subprotocol '
+ 'name: %r' % rest)
+
+
+def parse_host_header(request):
+ fields = request.headers_in[common.HOST_HEADER].split(':', 1)
+ if len(fields) == 1:
+ return fields[0], get_default_port(request.is_https())
+ try:
+ return fields[0], int(fields[1])
+ except ValueError as e:
+ raise HandshakeException('Invalid port number format: %r' % e)
+
+
+def format_header(name, value):
+ return u'%s: %s\r\n' % (name, value)
+
+
+def get_mandatory_header(request, key):
+ value = request.headers_in.get(key)
+ if value is None:
+ raise HandshakeException('Header %s is not defined' % key)
+ return value
+
+
+def validate_mandatory_header(request, key, expected_value, fail_status=None):
+ value = get_mandatory_header(request, key)
+
+ if value.lower() != expected_value.lower():
+ raise HandshakeException(
+ 'Expected %r for header %s but found %r (case-insensitive)' %
+ (expected_value, key, value),
+ status=fail_status)
+
+
+def check_request_line(request):
+ # 5.1 1. The three character UTF-8 string "GET".
+ # 5.1 2. A UTF-8-encoded U+0020 SPACE character (0x20 byte).
+ if request.method != u'GET':
+ raise HandshakeException('Method is not GET: %r' % request.method)
+
+ if request.protocol != u'HTTP/1.1':
+ raise HandshakeException('Version is not HTTP/1.1: %r' %
+ request.protocol)
+
+
+def parse_token_list(data):
+ """Parses a header value which follows 1#token and returns parsed elements
+ as a list of strings.
+
+ Leading LWSes must be trimmed.
+ """
+
+ state = http_header_util.ParsingState(data)
+
+ token_list = []
+
+ while True:
+ token = http_header_util.consume_token(state)
+ if token is not None:
+ token_list.append(token)
+
+ http_header_util.consume_lwses(state)
+
+ if http_header_util.peek(state) is None:
+ break
+
+ if not http_header_util.consume_string(state, ','):
+ raise HandshakeException('Expected a comma but found %r' %
+ http_header_util.peek(state))
+
+ http_header_util.consume_lwses(state)
+
+ if len(token_list) == 0:
+ raise HandshakeException('No valid token found')
+
+ return token_list
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py
new file mode 100644
index 0000000000..bddbafcca8
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/handshake/hybi.py
@@ -0,0 +1,403 @@
+# Copyright 2012, 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.
+"""This file provides the opening handshake processor for the WebSocket
+protocol (RFC 6455).
+
+Specification:
+http://tools.ietf.org/html/rfc6455
+"""
+
+from __future__ import absolute_import
+import base64
+import logging
+import os
+import re
+from hashlib import sha1
+
+from mod_pywebsocket import common
+from mod_pywebsocket.extensions import get_extension_processor
+from mod_pywebsocket.handshake._base import check_request_line
+from mod_pywebsocket.handshake._base import format_header
+from mod_pywebsocket.handshake._base import get_mandatory_header
+from mod_pywebsocket.handshake._base import HandshakeException
+from mod_pywebsocket.handshake._base import parse_token_list
+from mod_pywebsocket.handshake._base import validate_mandatory_header
+from mod_pywebsocket.handshake._base import validate_subprotocol
+from mod_pywebsocket.handshake._base import VersionException
+from mod_pywebsocket.stream import Stream
+from mod_pywebsocket.stream import StreamOptions
+from mod_pywebsocket import util
+from six.moves import map
+from six.moves import range
+
+# Used to validate the value in the Sec-WebSocket-Key header strictly. RFC 4648
+# disallows non-zero padding, so the character right before == must be any of
+# A, Q, g and w.
+_SEC_WEBSOCKET_KEY_REGEX = re.compile('^[+/0-9A-Za-z]{21}[AQgw]==$')
+
+# Defining aliases for values used frequently.
+_VERSION_LATEST = common.VERSION_HYBI_LATEST
+_VERSION_LATEST_STRING = str(_VERSION_LATEST)
+_SUPPORTED_VERSIONS = [
+ _VERSION_LATEST,
+]
+
+
+def compute_accept(key):
+ """Computes value for the Sec-WebSocket-Accept header from value of the
+ Sec-WebSocket-Key header.
+ """
+
+ accept_binary = sha1(key + common.WEBSOCKET_ACCEPT_UUID).digest()
+ accept = base64.b64encode(accept_binary)
+
+ return accept
+
+
+def compute_accept_from_unicode(unicode_key):
+ """A wrapper function for compute_accept which takes a unicode string as an
+ argument, and encodes it to byte string. It then passes it on to
+ compute_accept.
+ """
+
+ key = unicode_key.encode('UTF-8')
+ return compute_accept(key)
+
+
+class Handshaker(object):
+ """Opening handshake processor for the WebSocket protocol (RFC 6455)."""
+ def __init__(self, request, dispatcher):
+ """Construct an instance.
+
+ Args:
+ request: mod_python request.
+ dispatcher: Dispatcher (dispatch.Dispatcher).
+
+ Handshaker will add attributes such as ws_resource during handshake.
+ """
+
+ self._logger = util.get_class_logger(self)
+
+ self._request = request
+ self._dispatcher = dispatcher
+
+ def _validate_connection_header(self):
+ connection = get_mandatory_header(self._request,
+ common.CONNECTION_HEADER)
+
+ try:
+ connection_tokens = parse_token_list(connection)
+ except HandshakeException as e:
+ raise HandshakeException('Failed to parse %s: %s' %
+ (common.CONNECTION_HEADER, e))
+
+ connection_is_valid = False
+ for token in connection_tokens:
+ if token.lower() == common.UPGRADE_CONNECTION_TYPE.lower():
+ connection_is_valid = True
+ break
+ if not connection_is_valid:
+ raise HandshakeException(
+ '%s header doesn\'t contain "%s"' %
+ (common.CONNECTION_HEADER, common.UPGRADE_CONNECTION_TYPE))
+
+ def do_handshake(self):
+ self._request.ws_close_code = None
+ self._request.ws_close_reason = None
+
+ # Parsing.
+
+ check_request_line(self._request)
+
+ validate_mandatory_header(self._request, common.UPGRADE_HEADER,
+ common.WEBSOCKET_UPGRADE_TYPE)
+
+ self._validate_connection_header()
+
+ self._request.ws_resource = self._request.uri
+
+ unused_host = get_mandatory_header(self._request, common.HOST_HEADER)
+
+ self._request.ws_version = self._check_version()
+
+ try:
+ self._get_origin()
+ self._set_protocol()
+ self._parse_extensions()
+
+ # Key validation, response generation.
+
+ key = self._get_key()
+ accept = compute_accept(key)
+ self._logger.debug('%s: %r (%s)',
+ common.SEC_WEBSOCKET_ACCEPT_HEADER, accept,
+ util.hexify(base64.b64decode(accept)))
+
+ self._logger.debug('Protocol version is RFC 6455')
+
+ # Setup extension processors.
+
+ processors = []
+ if self._request.ws_requested_extensions is not None:
+ for extension_request in self._request.ws_requested_extensions:
+ processor = get_extension_processor(extension_request)
+ # Unknown extension requests are just ignored.
+ if processor is not None:
+ processors.append(processor)
+ self._request.ws_extension_processors = processors
+
+ # List of extra headers. The extra handshake handler may add header
+ # data as name/value pairs to this list and pywebsocket appends
+ # them to the WebSocket handshake.
+ self._request.extra_headers = []
+
+ # Extra handshake handler may modify/remove processors.
+ self._dispatcher.do_extra_handshake(self._request)
+ processors = [
+ processor
+ for processor in self._request.ws_extension_processors
+ if processor is not None
+ ]
+
+ # Ask each processor if there are extensions on the request which
+ # cannot co-exist. When processor decided other processors cannot
+ # co-exist with it, the processor marks them (or itself) as
+ # "inactive". The first extension processor has the right to
+ # make the final call.
+ for processor in reversed(processors):
+ if processor.is_active():
+ processor.check_consistency_with_other_processors(
+ processors)
+ processors = [
+ processor for processor in processors if processor.is_active()
+ ]
+
+ accepted_extensions = []
+
+ stream_options = StreamOptions()
+
+ for index, processor in enumerate(processors):
+ if not processor.is_active():
+ continue
+
+ extension_response = processor.get_extension_response()
+ if extension_response is None:
+ # Rejected.
+ continue
+
+ accepted_extensions.append(extension_response)
+
+ processor.setup_stream_options(stream_options)
+
+ # Inactivate all of the following compression extensions.
+ for j in range(index + 1, len(processors)):
+ processors[j].set_active(False)
+
+ if len(accepted_extensions) > 0:
+ self._request.ws_extensions = accepted_extensions
+ self._logger.debug(
+ 'Extensions accepted: %r',
+ list(
+ map(common.ExtensionParameter.name,
+ accepted_extensions)))
+ else:
+ self._request.ws_extensions = None
+
+ self._request.ws_stream = self._create_stream(stream_options)
+
+ if self._request.ws_requested_protocols is not None:
+ if self._request.ws_protocol is None:
+ raise HandshakeException(
+ 'do_extra_handshake must choose one subprotocol from '
+ 'ws_requested_protocols and set it to ws_protocol')
+ validate_subprotocol(self._request.ws_protocol)
+
+ self._logger.debug('Subprotocol accepted: %r',
+ self._request.ws_protocol)
+ else:
+ if self._request.ws_protocol is not None:
+ raise HandshakeException(
+ 'ws_protocol must be None when the client didn\'t '
+ 'request any subprotocol')
+
+ self._send_handshake(accept)
+ except HandshakeException as e:
+ if not e.status:
+ # Fallback to 400 bad request by default.
+ e.status = common.HTTP_STATUS_BAD_REQUEST
+ raise e
+
+ def _get_origin(self):
+ origin_header = common.ORIGIN_HEADER
+ origin = self._request.headers_in.get(origin_header)
+ if origin is None:
+ self._logger.debug('Client request does not have origin header')
+ self._request.ws_origin = origin
+
+ def _check_version(self):
+ version = get_mandatory_header(self._request,
+ common.SEC_WEBSOCKET_VERSION_HEADER)
+ if version == _VERSION_LATEST_STRING:
+ return _VERSION_LATEST
+
+ if version.find(',') >= 0:
+ raise HandshakeException(
+ 'Multiple versions (%r) are not allowed for header %s' %
+ (version, common.SEC_WEBSOCKET_VERSION_HEADER),
+ status=common.HTTP_STATUS_BAD_REQUEST)
+ raise VersionException('Unsupported version %r for header %s' %
+ (version, common.SEC_WEBSOCKET_VERSION_HEADER),
+ supported_versions=', '.join(
+ map(str, _SUPPORTED_VERSIONS)))
+
+ def _set_protocol(self):
+ self._request.ws_protocol = None
+ # MOZILLA
+ self._request.sts = None
+ # /MOZILLA
+
+ protocol_header = self._request.headers_in.get(
+ common.SEC_WEBSOCKET_PROTOCOL_HEADER)
+
+ if protocol_header is None:
+ self._request.ws_requested_protocols = None
+ return
+
+ self._request.ws_requested_protocols = parse_token_list(
+ protocol_header)
+ self._logger.debug('Subprotocols requested: %r',
+ self._request.ws_requested_protocols)
+
+ def _parse_extensions(self):
+ extensions_header = self._request.headers_in.get(
+ common.SEC_WEBSOCKET_EXTENSIONS_HEADER)
+ if not extensions_header:
+ self._request.ws_requested_extensions = None
+ return
+
+ try:
+ self._request.ws_requested_extensions = common.parse_extensions(
+ extensions_header)
+ except common.ExtensionParsingException as e:
+ raise HandshakeException(
+ 'Failed to parse Sec-WebSocket-Extensions header: %r' % e)
+
+ self._logger.debug(
+ 'Extensions requested: %r',
+ list(
+ map(common.ExtensionParameter.name,
+ self._request.ws_requested_extensions)))
+
+ def _validate_key(self, key):
+ if key.find(',') >= 0:
+ raise HandshakeException('Request has multiple %s header lines or '
+ 'contains illegal character \',\': %r' %
+ (common.SEC_WEBSOCKET_KEY_HEADER, key))
+
+ # Validate
+ key_is_valid = False
+ try:
+ # Validate key by quick regex match before parsing by base64
+ # module. Because base64 module skips invalid characters, we have
+ # to do this in advance to make this server strictly reject illegal
+ # keys.
+ if _SEC_WEBSOCKET_KEY_REGEX.match(key):
+ decoded_key = base64.b64decode(key)
+ if len(decoded_key) == 16:
+ key_is_valid = True
+ except TypeError as e:
+ pass
+
+ if not key_is_valid:
+ raise HandshakeException('Illegal value for header %s: %r' %
+ (common.SEC_WEBSOCKET_KEY_HEADER, key))
+
+ return decoded_key
+
+ def _get_key(self):
+ key = get_mandatory_header(self._request,
+ common.SEC_WEBSOCKET_KEY_HEADER)
+
+ decoded_key = self._validate_key(key)
+
+ self._logger.debug('%s: %r (%s)', common.SEC_WEBSOCKET_KEY_HEADER, key,
+ util.hexify(decoded_key))
+
+ return key.encode('UTF-8')
+
+ def _create_stream(self, stream_options):
+ return Stream(self._request, stream_options)
+
+ def _create_handshake_response(self, accept):
+ response = []
+
+ response.append(u'HTTP/1.1 101 Switching Protocols\r\n')
+
+ # WebSocket headers
+ response.append(
+ format_header(common.UPGRADE_HEADER,
+ common.WEBSOCKET_UPGRADE_TYPE))
+ response.append(
+ format_header(common.CONNECTION_HEADER,
+ common.UPGRADE_CONNECTION_TYPE))
+ response.append(
+ format_header(common.SEC_WEBSOCKET_ACCEPT_HEADER,
+ accept.decode('UTF-8')))
+ if self._request.ws_protocol is not None:
+ response.append(
+ format_header(common.SEC_WEBSOCKET_PROTOCOL_HEADER,
+ self._request.ws_protocol))
+ if (self._request.ws_extensions is not None
+ and len(self._request.ws_extensions) != 0):
+ response.append(
+ format_header(
+ common.SEC_WEBSOCKET_EXTENSIONS_HEADER,
+ common.format_extensions(self._request.ws_extensions)))
+ # MOZILLA
+ if self._request.sts is not None:
+ response.append(format_header("Strict-Transport-Security",
+ self._request.sts))
+ # /MOZILLA
+
+ # Headers not specific for WebSocket
+ for name, value in self._request.extra_headers:
+ response.append(format_header(name, value))
+
+ response.append(u'\r\n')
+
+ return u''.join(response)
+
+ def _send_handshake(self, accept):
+ raw_response = self._create_handshake_response(accept)
+ self._request.connection.write(raw_response.encode('UTF-8'))
+ self._logger.debug('Sent server\'s opening handshake: %r',
+ raw_response)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/http_header_util.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/http_header_util.py
new file mode 100644
index 0000000000..ded90b247b
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/http_header_util.py
@@ -0,0 +1,254 @@
+# 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.
+"""Utilities for parsing and formatting headers that follow the grammar defined
+in HTTP RFC http://www.ietf.org/rfc/rfc2616.txt.
+"""
+
+from __future__ import absolute_import
+import six.moves.urllib.parse
+
+_SEPARATORS = '()<>@,;:\\"/[]?={} \t'
+
+
+def _is_char(c):
+ """Returns true iff c is in CHAR as specified in HTTP RFC."""
+
+ return ord(c) <= 127
+
+
+def _is_ctl(c):
+ """Returns true iff c is in CTL as specified in HTTP RFC."""
+
+ return ord(c) <= 31 or ord(c) == 127
+
+
+class ParsingState(object):
+ def __init__(self, data):
+ self.data = data
+ self.head = 0
+
+
+def peek(state, pos=0):
+ """Peeks the character at pos from the head of data."""
+
+ if state.head + pos >= len(state.data):
+ return None
+
+ return state.data[state.head + pos]
+
+
+def consume(state, amount=1):
+ """Consumes specified amount of bytes from the head and returns the
+ consumed bytes. If there's not enough bytes to consume, returns None.
+ """
+
+ if state.head + amount > len(state.data):
+ return None
+
+ result = state.data[state.head:state.head + amount]
+ state.head = state.head + amount
+ return result
+
+
+def consume_string(state, expected):
+ """Given a parsing state and a expected string, consumes the string from
+ the head. Returns True if consumed successfully. Otherwise, returns
+ False.
+ """
+
+ pos = 0
+
+ for c in expected:
+ if c != peek(state, pos):
+ return False
+ pos += 1
+
+ consume(state, pos)
+ return True
+
+
+def consume_lws(state):
+ """Consumes a LWS from the head. Returns True if any LWS is consumed.
+ Otherwise, returns False.
+
+ LWS = [CRLF] 1*( SP | HT )
+ """
+
+ original_head = state.head
+
+ consume_string(state, '\r\n')
+
+ pos = 0
+
+ while True:
+ c = peek(state, pos)
+ if c == ' ' or c == '\t':
+ pos += 1
+ else:
+ if pos == 0:
+ state.head = original_head
+ return False
+ else:
+ consume(state, pos)
+ return True
+
+
+def consume_lwses(state):
+ """Consumes *LWS from the head."""
+
+ while consume_lws(state):
+ pass
+
+
+def consume_token(state):
+ """Consumes a token from the head. Returns the token or None if no token
+ was found.
+ """
+
+ pos = 0
+
+ while True:
+ c = peek(state, pos)
+ if c is None or c in _SEPARATORS or _is_ctl(c) or not _is_char(c):
+ if pos == 0:
+ return None
+
+ return consume(state, pos)
+ else:
+ pos += 1
+
+
+def consume_token_or_quoted_string(state):
+ """Consumes a token or a quoted-string, and returns the token or unquoted
+ string. If no token or quoted-string was found, returns None.
+ """
+
+ original_head = state.head
+
+ if not consume_string(state, '"'):
+ return consume_token(state)
+
+ result = []
+
+ expect_quoted_pair = False
+
+ while True:
+ if not expect_quoted_pair and consume_lws(state):
+ result.append(' ')
+ continue
+
+ c = consume(state)
+ if c is None:
+ # quoted-string is not enclosed with double quotation
+ state.head = original_head
+ return None
+ elif expect_quoted_pair:
+ expect_quoted_pair = False
+ if _is_char(c):
+ result.append(c)
+ else:
+ # Non CHAR character found in quoted-pair
+ state.head = original_head
+ return None
+ elif c == '\\':
+ expect_quoted_pair = True
+ elif c == '"':
+ return ''.join(result)
+ elif _is_ctl(c):
+ # Invalid character %r found in qdtext
+ state.head = original_head
+ return None
+ else:
+ result.append(c)
+
+
+def quote_if_necessary(s):
+ """Quotes arbitrary string into quoted-string."""
+
+ quote = False
+ if s == '':
+ return '""'
+
+ result = []
+ for c in s:
+ if c == '"' or c in _SEPARATORS or _is_ctl(c) or not _is_char(c):
+ quote = True
+
+ if c == '"' or _is_ctl(c):
+ result.append('\\' + c)
+ else:
+ result.append(c)
+
+ if quote:
+ return '"' + ''.join(result) + '"'
+ else:
+ return ''.join(result)
+
+
+def parse_uri(uri):
+ """Parse absolute URI then return host, port and resource."""
+
+ parsed = six.moves.urllib.parse.urlsplit(uri)
+ if parsed.scheme != 'wss' and parsed.scheme != 'ws':
+ # |uri| must be a relative URI.
+ # TODO(toyoshim): Should validate |uri|.
+ return None, None, uri
+
+ if parsed.hostname is None:
+ return None, None, None
+
+ port = None
+ try:
+ port = parsed.port
+ except ValueError:
+ # The port property cause ValueError on invalid null port descriptions
+ # like 'ws://host:INVALID_PORT/path', where the assigned port is not
+ # *DIGIT. For python 3.6 and later, ValueError also raises when
+ # assigning invalid port numbers such as 'ws://host:-1/path'. Earlier
+ # versions simply return None and ignore invalid port attributes.
+ return None, None, None
+
+ if port is None:
+ if parsed.scheme == 'ws':
+ port = 80
+ else:
+ port = 443
+
+ path = parsed.path
+ if not path:
+ path += '/'
+ if parsed.query:
+ path += '?' + parsed.query
+ if parsed.fragment:
+ path += '#' + parsed.fragment
+
+ return parsed.hostname, port, path
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py
new file mode 100644
index 0000000000..d353967618
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+#
+# 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.
+"""Memorizing file.
+
+A memorizing file wraps a file and memorizes lines read by readline.
+"""
+
+from __future__ import absolute_import
+import sys
+
+
+class MemorizingFile(object):
+ """MemorizingFile wraps a file and memorizes lines read by readline.
+
+ Note that data read by other methods are not memorized. This behavior
+ is good enough for memorizing lines SimpleHTTPServer reads before
+ the control reaches WebSocketRequestHandler.
+ """
+ def __init__(self, file_, max_memorized_lines=sys.maxsize):
+ """Construct an instance.
+
+ Args:
+ file_: the file object to wrap.
+ max_memorized_lines: the maximum number of lines to memorize.
+ Only the first max_memorized_lines are memorized.
+ Default: sys.maxint.
+ """
+ self._file = file_
+ self._memorized_lines = []
+ self._max_memorized_lines = max_memorized_lines
+ self._buffered = False
+ self._buffered_line = None
+
+ def __getattribute__(self, name):
+ """Return a file attribute.
+
+ Returns the value overridden by this class for some attributes,
+ and forwards the call to _file for the other attributes.
+ """
+ if name in ('_file', '_memorized_lines', '_max_memorized_lines',
+ '_buffered', '_buffered_line', 'readline',
+ 'get_memorized_lines'):
+ return object.__getattribute__(self, name)
+ return self._file.__getattribute__(name)
+
+ def readline(self, size=-1):
+ """Override file.readline and memorize the line read.
+
+ Note that even if size is specified and smaller than actual size,
+ the whole line will be read out from underlying file object by
+ subsequent readline calls.
+ """
+ if self._buffered:
+ line = self._buffered_line
+ self._buffered = False
+ else:
+ line = self._file.readline()
+ if line and len(self._memorized_lines) < self._max_memorized_lines:
+ self._memorized_lines.append(line)
+ if size >= 0 and size < len(line):
+ self._buffered = True
+ self._buffered_line = line[size:]
+ return line[:size]
+ return line
+
+ def get_memorized_lines(self):
+ """Get lines memorized so far."""
+ return self._memorized_lines
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/msgutil.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/msgutil.py
new file mode 100644
index 0000000000..f58ca78e14
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/msgutil.py
@@ -0,0 +1,214 @@
+# 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.
+"""Message related utilities.
+
+Note: request.connection.write/read are used in this module, even though
+mod_python document says that they should be used only in connection
+handlers. Unfortunately, we have no other options. For example,
+request.write/read are not suitable because they don't allow direct raw
+bytes writing/reading.
+"""
+
+from __future__ import absolute_import
+import six.moves.queue
+import threading
+
+# Export Exception symbols from msgutil for backward compatibility
+from mod_pywebsocket._stream_exceptions import ConnectionTerminatedException
+from mod_pywebsocket._stream_exceptions import InvalidFrameException
+from mod_pywebsocket._stream_exceptions import BadOperationException
+from mod_pywebsocket._stream_exceptions import UnsupportedFrameException
+
+
+# An API for handler to send/receive WebSocket messages.
+def close_connection(request):
+ """Close connection.
+
+ Args:
+ request: mod_python request.
+ """
+ request.ws_stream.close_connection()
+
+
+def send_message(request, payload_data, end=True, binary=False):
+ """Send a message (or part of a message).
+
+ Args:
+ request: mod_python request.
+ payload_data: unicode text or str binary to send.
+ end: True to terminate a message.
+ False to send payload_data as part of a message that is to be
+ terminated by next or later send_message call with end=True.
+ binary: send payload_data as binary frame(s).
+ Raises:
+ BadOperationException: when server already terminated.
+ """
+ request.ws_stream.send_message(payload_data, end, binary)
+
+
+def receive_message(request):
+ """Receive a WebSocket frame and return its payload as a text in
+ unicode or a binary in str.
+
+ Args:
+ request: mod_python request.
+ Raises:
+ InvalidFrameException: when client send invalid frame.
+ UnsupportedFrameException: when client send unsupported frame e.g. some
+ of reserved bit is set but no extension can
+ recognize it.
+ InvalidUTF8Exception: when client send a text frame containing any
+ invalid UTF-8 string.
+ ConnectionTerminatedException: when the connection is closed
+ unexpectedly.
+ BadOperationException: when client already terminated.
+ """
+ return request.ws_stream.receive_message()
+
+
+def send_ping(request, body):
+ request.ws_stream.send_ping(body)
+
+
+class MessageReceiver(threading.Thread):
+ """This class receives messages from the client.
+
+ This class provides three ways to receive messages: blocking,
+ non-blocking, and via callback. Callback has the highest precedence.
+
+ Note: This class should not be used with the standalone server for wss
+ because pyOpenSSL used by the server raises a fatal error if the socket
+ is accessed from multiple threads.
+ """
+ def __init__(self, request, onmessage=None):
+ """Construct an instance.
+
+ Args:
+ request: mod_python request.
+ onmessage: a function to be called when a message is received.
+ May be None. If not None, the function is called on
+ another thread. In that case, MessageReceiver.receive
+ and MessageReceiver.receive_nowait are useless
+ because they will never return any messages.
+ """
+
+ threading.Thread.__init__(self)
+ self._request = request
+ self._queue = six.moves.queue.Queue()
+ self._onmessage = onmessage
+ self._stop_requested = False
+ self.setDaemon(True)
+ self.start()
+
+ def run(self):
+ try:
+ while not self._stop_requested:
+ message = receive_message(self._request)
+ if self._onmessage:
+ self._onmessage(message)
+ else:
+ self._queue.put(message)
+ finally:
+ close_connection(self._request)
+
+ def receive(self):
+ """ Receive a message from the channel, blocking.
+
+ Returns:
+ message as a unicode string.
+ """
+ return self._queue.get()
+
+ def receive_nowait(self):
+ """ Receive a message from the channel, non-blocking.
+
+ Returns:
+ message as a unicode string if available. None otherwise.
+ """
+ try:
+ message = self._queue.get_nowait()
+ except six.moves.queue.Empty:
+ message = None
+ return message
+
+ def stop(self):
+ """Request to stop this instance.
+
+ The instance will be stopped after receiving the next message.
+ This method may not be very useful, but there is no clean way
+ in Python to forcefully stop a running thread.
+ """
+ self._stop_requested = True
+
+
+class MessageSender(threading.Thread):
+ """This class sends messages to the client.
+
+ This class provides both synchronous and asynchronous ways to send
+ messages.
+
+ Note: This class should not be used with the standalone server for wss
+ because pyOpenSSL used by the server raises a fatal error if the socket
+ is accessed from multiple threads.
+ """
+ def __init__(self, request):
+ """Construct an instance.
+
+ Args:
+ request: mod_python request.
+ """
+ threading.Thread.__init__(self)
+ self._request = request
+ self._queue = six.moves.queue.Queue()
+ self.setDaemon(True)
+ self.start()
+
+ def run(self):
+ while True:
+ message, condition = self._queue.get()
+ condition.acquire()
+ send_message(self._request, message)
+ condition.notify()
+ condition.release()
+
+ def send(self, message):
+ """Send a message, blocking."""
+
+ condition = threading.Condition()
+ condition.acquire()
+ self._queue.put((message, condition))
+ condition.wait()
+
+ def send_nowait(self, message):
+ """Send a message, non-blocking."""
+
+ self._queue.put((message, threading.Condition()))
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/request_handler.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/request_handler.py
new file mode 100644
index 0000000000..ea583bab3b
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/request_handler.py
@@ -0,0 +1,321 @@
+# Copyright 2020, 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.
+"""Request Handler and Request/Connection classes for standalone server.
+"""
+
+from __future__ import absolute_import
+
+import os
+
+from six.moves import CGIHTTPServer
+from six.moves import http_client
+
+from mod_pywebsocket import common
+from mod_pywebsocket import dispatch
+from mod_pywebsocket import handshake
+from mod_pywebsocket import http_header_util
+from mod_pywebsocket import memorizingfile
+from mod_pywebsocket import util
+
+# 1024 is practically large enough to contain WebSocket handshake lines.
+_MAX_MEMORIZED_LINES = 1024
+
+
+class _StandaloneConnection(object):
+ """Mimic mod_python mp_conn."""
+ def __init__(self, request_handler):
+ """Construct an instance.
+
+ Args:
+ request_handler: A WebSocketRequestHandler instance.
+ """
+
+ self._request_handler = request_handler
+
+ def get_local_addr(self):
+ """Getter to mimic mp_conn.local_addr."""
+
+ return (self._request_handler.server.server_name,
+ self._request_handler.server.server_port)
+
+ local_addr = property(get_local_addr)
+
+ def get_remote_addr(self):
+ """Getter to mimic mp_conn.remote_addr.
+
+ Setting the property in __init__ won't work because the request
+ handler is not initialized yet there."""
+
+ return self._request_handler.client_address
+
+ remote_addr = property(get_remote_addr)
+
+ def write(self, data):
+ """Mimic mp_conn.write()."""
+
+ return self._request_handler.wfile.write(data)
+
+ def read(self, length):
+ """Mimic mp_conn.read()."""
+
+ return self._request_handler.rfile.read(length)
+
+ def get_memorized_lines(self):
+ """Get memorized lines."""
+
+ return self._request_handler.rfile.get_memorized_lines()
+
+
+class _StandaloneRequest(object):
+ """Mimic mod_python request."""
+ def __init__(self, request_handler, use_tls):
+ """Construct an instance.
+
+ Args:
+ request_handler: A WebSocketRequestHandler instance.
+ """
+
+ self._logger = util.get_class_logger(self)
+
+ self._request_handler = request_handler
+ self.connection = _StandaloneConnection(request_handler)
+ self._use_tls = use_tls
+ self.headers_in = request_handler.headers
+
+ def get_uri(self):
+ """Getter to mimic request.uri.
+
+ This method returns the raw data at the Request-URI part of the
+ Request-Line, while the uri method on the request object of mod_python
+ returns the path portion after parsing the raw data. This behavior is
+ kept for compatibility.
+ """
+
+ return self._request_handler.path
+
+ uri = property(get_uri)
+
+ def get_unparsed_uri(self):
+ """Getter to mimic request.unparsed_uri."""
+
+ return self._request_handler.path
+
+ unparsed_uri = property(get_unparsed_uri)
+
+ def get_method(self):
+ """Getter to mimic request.method."""
+
+ return self._request_handler.command
+
+ method = property(get_method)
+
+ def get_protocol(self):
+ """Getter to mimic request.protocol."""
+
+ return self._request_handler.request_version
+
+ protocol = property(get_protocol)
+
+ def is_https(self):
+ """Mimic request.is_https()."""
+
+ return self._use_tls
+
+
+class WebSocketRequestHandler(CGIHTTPServer.CGIHTTPRequestHandler):
+ """CGIHTTPRequestHandler specialized for WebSocket."""
+
+ # Use httplib.HTTPMessage instead of mimetools.Message.
+ MessageClass = http_client.HTTPMessage
+
+ def setup(self):
+ """Override SocketServer.StreamRequestHandler.setup to wrap rfile
+ with MemorizingFile.
+
+ This method will be called by BaseRequestHandler's constructor
+ before calling BaseHTTPRequestHandler.handle.
+ BaseHTTPRequestHandler.handle will call
+ BaseHTTPRequestHandler.handle_one_request and it will call
+ WebSocketRequestHandler.parse_request.
+ """
+
+ # Call superclass's setup to prepare rfile, wfile, etc. See setup
+ # definition on the root class SocketServer.StreamRequestHandler to
+ # understand what this does.
+ CGIHTTPServer.CGIHTTPRequestHandler.setup(self)
+
+ self.rfile = memorizingfile.MemorizingFile(
+ self.rfile, max_memorized_lines=_MAX_MEMORIZED_LINES)
+
+ def __init__(self, request, client_address, server):
+ self._logger = util.get_class_logger(self)
+
+ self._options = server.websocket_server_options
+
+ # Overrides CGIHTTPServerRequestHandler.cgi_directories.
+ self.cgi_directories = self._options.cgi_directories
+ # Replace CGIHTTPRequestHandler.is_executable method.
+ if self._options.is_executable_method is not None:
+ self.is_executable = self._options.is_executable_method
+
+ # This actually calls BaseRequestHandler.__init__.
+ CGIHTTPServer.CGIHTTPRequestHandler.__init__(self, request,
+ client_address, server)
+
+ def parse_request(self):
+ """Override BaseHTTPServer.BaseHTTPRequestHandler.parse_request.
+
+ Return True to continue processing for HTTP(S), False otherwise.
+
+ See BaseHTTPRequestHandler.handle_one_request method which calls
+ this method to understand how the return value will be handled.
+ """
+
+ # We hook parse_request method, but also call the original
+ # CGIHTTPRequestHandler.parse_request since when we return False,
+ # CGIHTTPRequestHandler.handle_one_request continues processing and
+ # it needs variables set by CGIHTTPRequestHandler.parse_request.
+ #
+ # Variables set by this method will be also used by WebSocket request
+ # handling (self.path, self.command, self.requestline, etc. See also
+ # how _StandaloneRequest's members are implemented using these
+ # attributes).
+ if not CGIHTTPServer.CGIHTTPRequestHandler.parse_request(self):
+ return False
+
+ if self._options.use_basic_auth:
+ auth = self.headers.get('Authorization')
+ if auth != self._options.basic_auth_credential:
+ self.send_response(401)
+ self.send_header('WWW-Authenticate',
+ 'Basic realm="Pywebsocket"')
+ self.end_headers()
+ self._logger.info('Request basic authentication')
+ return False
+
+ host, port, resource = http_header_util.parse_uri(self.path)
+ if resource is None:
+ self._logger.info('Invalid URI: %r', self.path)
+ self._logger.info('Fallback to CGIHTTPRequestHandler')
+ return True
+ server_options = self.server.websocket_server_options
+ if host is not None:
+ validation_host = server_options.validation_host
+ if validation_host is not None and host != validation_host:
+ self._logger.info('Invalid host: %r (expected: %r)', host,
+ validation_host)
+ self._logger.info('Fallback to CGIHTTPRequestHandler')
+ return True
+ if port is not None:
+ validation_port = server_options.validation_port
+ if validation_port is not None and port != validation_port:
+ self._logger.info('Invalid port: %r (expected: %r)', port,
+ validation_port)
+ self._logger.info('Fallback to CGIHTTPRequestHandler')
+ return True
+ self.path = resource
+
+ request = _StandaloneRequest(self, self._options.use_tls)
+
+ try:
+ # Fallback to default http handler for request paths for which
+ # we don't have request handlers.
+ if not self._options.dispatcher.get_handler_suite(self.path):
+ self._logger.info('No handler for resource: %r', self.path)
+ self._logger.info('Fallback to CGIHTTPRequestHandler')
+ return True
+ except dispatch.DispatchException as e:
+ self._logger.info('Dispatch failed for error: %s', e)
+ self.send_error(e.status)
+ return False
+
+ # If any Exceptions without except clause setup (including
+ # DispatchException) is raised below this point, it will be caught
+ # and logged by WebSocketServer.
+
+ try:
+ try:
+ handshake.do_handshake(request, self._options.dispatcher)
+ except handshake.VersionException as e:
+ self._logger.info('Handshake failed for version error: %s', e)
+ self.send_response(common.HTTP_STATUS_BAD_REQUEST)
+ self.send_header(common.SEC_WEBSOCKET_VERSION_HEADER,
+ e.supported_versions)
+ self.end_headers()
+ return False
+ except handshake.HandshakeException as e:
+ # Handshake for ws(s) failed.
+ self._logger.info('Handshake failed for error: %s', e)
+ self.send_error(e.status)
+ return False
+
+ request._dispatcher = self._options.dispatcher
+ self._options.dispatcher.transfer_data(request)
+ except handshake.AbortedByUserException as e:
+ self._logger.info('Aborted: %s', e)
+ return False
+
+ def log_request(self, code='-', size='-'):
+ """Override BaseHTTPServer.log_request."""
+
+ self._logger.info('"%s" %s %s', self.requestline, str(code), str(size))
+
+ def log_error(self, *args):
+ """Override BaseHTTPServer.log_error."""
+
+ # Despite the name, this method is for warnings than for errors.
+ # For example, HTTP status code is logged by this method.
+ self._logger.warning('%s - %s', self.address_string(),
+ args[0] % args[1:])
+
+ def is_cgi(self):
+ """Test whether self.path corresponds to a CGI script.
+
+ Add extra check that self.path doesn't contains ..
+ Also check if the file is a executable file or not.
+ If the file is not executable, it is handled as static file or dir
+ rather than a CGI script.
+ """
+
+ if CGIHTTPServer.CGIHTTPRequestHandler.is_cgi(self):
+ if '..' in self.path:
+ return False
+ # strip query parameter from request path
+ resource_name = self.path.split('?', 2)[0]
+ # convert resource_name into real path name in filesystem.
+ scriptfile = self.translate_path(resource_name)
+ if not os.path.isfile(scriptfile):
+ return False
+ if not self.is_executable(scriptfile):
+ return False
+ return True
+ return False
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/server_util.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/server_util.py
new file mode 100644
index 0000000000..48c45fa444
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/server_util.py
@@ -0,0 +1,89 @@
+# Copyright 2020, 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.
+"""Server related utilities."""
+
+from __future__ import absolute_import
+
+import logging
+import logging.handlers
+import threading
+import time
+
+from mod_pywebsocket import common
+from mod_pywebsocket import util
+
+
+def _get_logger_from_class(c):
+ return logging.getLogger('%s.%s' % (c.__module__, c.__name__))
+
+
+def configure_logging(options):
+ logging.addLevelName(common.LOGLEVEL_FINE, 'FINE')
+
+ logger = logging.getLogger()
+ logger.setLevel(logging.getLevelName(options.log_level.upper()))
+ if options.log_file:
+ handler = logging.handlers.RotatingFileHandler(options.log_file, 'a',
+ options.log_max,
+ options.log_count)
+ else:
+ handler = logging.StreamHandler()
+ formatter = logging.Formatter(
+ '[%(asctime)s] [%(levelname)s] %(name)s: %(message)s')
+ handler.setFormatter(formatter)
+ logger.addHandler(handler)
+
+ deflate_log_level_name = logging.getLevelName(
+ options.deflate_log_level.upper())
+ _get_logger_from_class(util._Deflater).setLevel(deflate_log_level_name)
+ _get_logger_from_class(util._Inflater).setLevel(deflate_log_level_name)
+
+
+class ThreadMonitor(threading.Thread):
+ daemon = True
+
+ def __init__(self, interval_in_sec):
+ threading.Thread.__init__(self, name='ThreadMonitor')
+
+ self._logger = util.get_class_logger(self)
+
+ self._interval_in_sec = interval_in_sec
+
+ def run(self):
+ while True:
+ thread_name_list = []
+ for thread in threading.enumerate():
+ thread_name_list.append(thread.name)
+ self._logger.info("%d active threads: %s",
+ threading.active_count(),
+ ', '.join(thread_name_list))
+ time.sleep(self._interval_in_sec)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/standalone.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/standalone.py
new file mode 100755
index 0000000000..b075d989f0
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/standalone.py
@@ -0,0 +1,483 @@
+#!/usr/bin/env python
+#
+# Copyright 2012, 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.
+"""Standalone WebSocket server.
+
+Use this file to launch pywebsocket as a standalone server.
+
+
+BASIC USAGE
+===========
+
+Go to the src directory and run
+
+ $ python mod_pywebsocket/standalone.py [-p <ws_port>]
+ [-w <websock_handlers>]
+ [-d <document_root>]
+
+<ws_port> is the port number to use for ws:// connection.
+
+<document_root> is the path to the root directory of HTML files.
+
+<websock_handlers> is the path to the root directory of WebSocket handlers.
+If not specified, <document_root> will be used. See __init__.py (or
+run $ pydoc mod_pywebsocket) for how to write WebSocket handlers.
+
+For more detail and other options, run
+
+ $ python mod_pywebsocket/standalone.py --help
+
+or see _build_option_parser method below.
+
+For trouble shooting, adding "--log_level debug" might help you.
+
+
+TRY DEMO
+========
+
+Go to the src directory and run standalone.py with -d option to set the
+document root to the directory containing example HTMLs and handlers like this:
+
+ $ cd src
+ $ PYTHONPATH=. python mod_pywebsocket/standalone.py -d example
+
+to launch pywebsocket with the sample handler and html on port 80. Open
+http://localhost/console.html, click the connect button, type something into
+the text box next to the send button and click the send button. If everything
+is working, you'll see the message you typed echoed by the server.
+
+
+USING TLS
+=========
+
+To run the standalone server with TLS support, run it with -t, -k, and -c
+options. When TLS is enabled, the standalone server accepts only TLS connection.
+
+Note that when ssl module is used and the key/cert location is incorrect,
+TLS connection silently fails while pyOpenSSL fails on startup.
+
+Example:
+
+ $ PYTHONPATH=. python mod_pywebsocket/standalone.py \
+ -d example \
+ -p 10443 \
+ -t \
+ -c ../test/cert/cert.pem \
+ -k ../test/cert/key.pem \
+
+Note that when passing a relative path to -c and -k option, it will be resolved
+using the document root directory as the base.
+
+
+USING CLIENT AUTHENTICATION
+===========================
+
+To run the standalone server with TLS client authentication support, run it with
+--tls-client-auth and --tls-client-ca options in addition to ones required for
+TLS support.
+
+Example:
+
+ $ PYTHONPATH=. python mod_pywebsocket/standalone.py -d example -p 10443 -t \
+ -c ../test/cert/cert.pem -k ../test/cert/key.pem \
+ --tls-client-auth \
+ --tls-client-ca=../test/cert/cacert.pem
+
+Note that when passing a relative path to --tls-client-ca option, it will be
+resolved using the document root directory as the base.
+
+
+CONFIGURATION FILE
+==================
+
+You can also write a configuration file and use it by specifying the path to
+the configuration file by --config option. Please write a configuration file
+following the documentation of the Python ConfigParser library. Name of each
+entry must be the long version argument name. E.g. to set log level to debug,
+add the following line:
+
+log_level=debug
+
+For options which doesn't take value, please add some fake value. E.g. for
+--tls option, add the following line:
+
+tls=True
+
+Note that tls will be enabled even if you write tls=False as the value part is
+fake.
+
+When both a command line argument and a configuration file entry are set for
+the same configuration item, the command line value will override one in the
+configuration file.
+
+
+THREADING
+=========
+
+This server is derived from SocketServer.ThreadingMixIn. Hence a thread is
+used for each request.
+
+
+SECURITY WARNING
+================
+
+This uses CGIHTTPServer and CGIHTTPServer is not secure.
+It may execute arbitrary Python code or external programs. It should not be
+used outside a firewall.
+"""
+
+from __future__ import absolute_import
+from six.moves import configparser
+import base64
+import logging
+import argparse
+import os
+import six
+import sys
+import traceback
+
+from mod_pywebsocket import common
+from mod_pywebsocket import util
+from mod_pywebsocket import server_util
+from mod_pywebsocket.websocket_server import WebSocketServer
+
+_DEFAULT_LOG_MAX_BYTES = 1024 * 256
+_DEFAULT_LOG_BACKUP_COUNT = 5
+
+_DEFAULT_REQUEST_QUEUE_SIZE = 128
+
+
+def _build_option_parser():
+ parser = argparse.ArgumentParser()
+
+ parser.add_argument(
+ '--config',
+ dest='config_file',
+ type=six.text_type,
+ default=None,
+ help=('Path to configuration file. See the file comment '
+ 'at the top of this file for the configuration '
+ 'file format'))
+ parser.add_argument('-H',
+ '--server-host',
+ '--server_host',
+ dest='server_host',
+ default='',
+ help='server hostname to listen to')
+ parser.add_argument('-V',
+ '--validation-host',
+ '--validation_host',
+ dest='validation_host',
+ default=None,
+ help='server hostname to validate in absolute path.')
+ parser.add_argument('-p',
+ '--port',
+ dest='port',
+ type=int,
+ default=common.DEFAULT_WEB_SOCKET_PORT,
+ help='port to listen to')
+ parser.add_argument('-P',
+ '--validation-port',
+ '--validation_port',
+ dest='validation_port',
+ type=int,
+ default=None,
+ help='server port to validate in absolute path.')
+ parser.add_argument(
+ '-w',
+ '--websock-handlers',
+ '--websock_handlers',
+ dest='websock_handlers',
+ default='.',
+ help=('The root directory of WebSocket handler files. '
+ 'If the path is relative, --document-root is used '
+ 'as the base.'))
+ parser.add_argument('-m',
+ '--websock-handlers-map-file',
+ '--websock_handlers_map_file',
+ dest='websock_handlers_map_file',
+ default=None,
+ help=('WebSocket handlers map file. '
+ 'Each line consists of alias_resource_path and '
+ 'existing_resource_path, separated by spaces.'))
+ parser.add_argument('-s',
+ '--scan-dir',
+ '--scan_dir',
+ dest='scan_dir',
+ default=None,
+ help=('Must be a directory under --websock-handlers. '
+ 'Only handlers under this directory are scanned '
+ 'and registered to the server. '
+ 'Useful for saving scan time when the handler '
+ 'root directory contains lots of files that are '
+ 'not handler file or are handler files but you '
+ 'don\'t want them to be registered. '))
+ parser.add_argument(
+ '--allow-handlers-outside-root-dir',
+ '--allow_handlers_outside_root_dir',
+ dest='allow_handlers_outside_root_dir',
+ action='store_true',
+ default=False,
+ help=('Scans WebSocket handlers even if their canonical '
+ 'path is not under --websock-handlers.'))
+ parser.add_argument('-d',
+ '--document-root',
+ '--document_root',
+ dest='document_root',
+ default='.',
+ help='Document root directory.')
+ parser.add_argument('-x',
+ '--cgi-paths',
+ '--cgi_paths',
+ dest='cgi_paths',
+ default=None,
+ help=('CGI paths relative to document_root.'
+ 'Comma-separated. (e.g -x /cgi,/htbin) '
+ 'Files under document_root/cgi_path are handled '
+ 'as CGI programs. Must be executable.'))
+ parser.add_argument('-t',
+ '--tls',
+ dest='use_tls',
+ action='store_true',
+ default=False,
+ help='use TLS (wss://)')
+ parser.add_argument('-k',
+ '--private-key',
+ '--private_key',
+ dest='private_key',
+ default='',
+ help='TLS private key file.')
+ parser.add_argument('-c',
+ '--certificate',
+ dest='certificate',
+ default='',
+ help='TLS certificate file.')
+ parser.add_argument('--tls-client-auth',
+ dest='tls_client_auth',
+ action='store_true',
+ default=False,
+ help='Requests TLS client auth on every connection.')
+ parser.add_argument('--tls-client-cert-optional',
+ dest='tls_client_cert_optional',
+ action='store_true',
+ default=False,
+ help=('Makes client certificate optional even though '
+ 'TLS client auth is enabled.'))
+ parser.add_argument('--tls-client-ca',
+ dest='tls_client_ca',
+ default='',
+ help=('Specifies a pem file which contains a set of '
+ 'concatenated CA certificates which are used to '
+ 'validate certificates passed from clients'))
+ parser.add_argument('--basic-auth',
+ dest='use_basic_auth',
+ action='store_true',
+ default=False,
+ help='Requires Basic authentication.')
+ parser.add_argument(
+ '--basic-auth-credential',
+ dest='basic_auth_credential',
+ default='test:test',
+ help='Specifies the credential of basic authentication '
+ 'by username:password pair (e.g. test:test).')
+ parser.add_argument('-l',
+ '--log-file',
+ '--log_file',
+ dest='log_file',
+ default='',
+ help='Log file.')
+ # Custom log level:
+ # - FINE: Prints status of each frame processing step
+ parser.add_argument('--log-level',
+ '--log_level',
+ type=six.text_type,
+ dest='log_level',
+ default='warn',
+ choices=[
+ 'fine', 'debug', 'info', 'warning', 'warn',
+ 'error', 'critical'
+ ],
+ help='Log level.')
+ parser.add_argument(
+ '--deflate-log-level',
+ '--deflate_log_level',
+ type=six.text_type,
+ dest='deflate_log_level',
+ default='warn',
+ choices=['debug', 'info', 'warning', 'warn', 'error', 'critical'],
+ help='Log level for _Deflater and _Inflater.')
+ parser.add_argument('--thread-monitor-interval-in-sec',
+ '--thread_monitor_interval_in_sec',
+ dest='thread_monitor_interval_in_sec',
+ type=int,
+ default=-1,
+ help=('If positive integer is specified, run a thread '
+ 'monitor to show the status of server threads '
+ 'periodically in the specified inteval in '
+ 'second. If non-positive integer is specified, '
+ 'disable the thread monitor.'))
+ parser.add_argument('--log-max',
+ '--log_max',
+ dest='log_max',
+ type=int,
+ default=_DEFAULT_LOG_MAX_BYTES,
+ help='Log maximum bytes')
+ parser.add_argument('--log-count',
+ '--log_count',
+ dest='log_count',
+ type=int,
+ default=_DEFAULT_LOG_BACKUP_COUNT,
+ help='Log backup count')
+ parser.add_argument('-q',
+ '--queue',
+ dest='request_queue_size',
+ type=int,
+ default=_DEFAULT_REQUEST_QUEUE_SIZE,
+ help='request queue size')
+
+ return parser
+
+
+def _parse_args_and_config(args):
+ parser = _build_option_parser()
+
+ # First, parse options without configuration file.
+ temporary_options, temporary_args = parser.parse_known_args(args=args)
+ if temporary_args:
+ logging.critical('Unrecognized positional arguments: %r',
+ temporary_args)
+ sys.exit(1)
+
+ if temporary_options.config_file:
+ try:
+ config_fp = open(temporary_options.config_file, 'r')
+ except IOError as e:
+ logging.critical('Failed to open configuration file %r: %r',
+ temporary_options.config_file, e)
+ sys.exit(1)
+
+ config_parser = configparser.SafeConfigParser()
+ config_parser.readfp(config_fp)
+ config_fp.close()
+
+ args_from_config = []
+ for name, value in config_parser.items('pywebsocket'):
+ args_from_config.append('--' + name)
+ args_from_config.append(value)
+ if args is None:
+ args = args_from_config
+ else:
+ args = args_from_config + args
+ return parser.parse_known_args(args=args)
+ else:
+ return temporary_options, temporary_args
+
+
+def _main(args=None):
+ """You can call this function from your own program, but please note that
+ this function has some side-effects that might affect your program. For
+ example, util.wrap_popen3_for_win use in this method replaces implementation
+ of os.popen3.
+ """
+
+ options, args = _parse_args_and_config(args=args)
+
+ os.chdir(options.document_root)
+
+ server_util.configure_logging(options)
+
+ # TODO(tyoshino): Clean up initialization of CGI related values. Move some
+ # of code here to WebSocketRequestHandler class if it's better.
+ options.cgi_directories = []
+ options.is_executable_method = None
+ if options.cgi_paths:
+ options.cgi_directories = options.cgi_paths.split(',')
+ if sys.platform in ('cygwin', 'win32'):
+ cygwin_path = None
+ # For Win32 Python, it is expected that CYGWIN_PATH
+ # is set to a directory of cygwin binaries.
+ # For example, websocket_server.py in Chromium sets CYGWIN_PATH to
+ # full path of third_party/cygwin/bin.
+ if 'CYGWIN_PATH' in os.environ:
+ cygwin_path = os.environ['CYGWIN_PATH']
+ util.wrap_popen3_for_win(cygwin_path)
+
+ def __check_script(scriptpath):
+ return util.get_script_interp(scriptpath, cygwin_path)
+
+ options.is_executable_method = __check_script
+
+ if options.use_tls:
+ logging.debug('Using ssl module')
+
+ if not options.private_key or not options.certificate:
+ logging.critical(
+ 'To use TLS, specify private_key and certificate.')
+ sys.exit(1)
+
+ if (options.tls_client_cert_optional and not options.tls_client_auth):
+ logging.critical('Client authentication must be enabled to '
+ 'specify tls_client_cert_optional')
+ sys.exit(1)
+ else:
+ if options.tls_client_auth:
+ logging.critical('TLS must be enabled for client authentication.')
+ sys.exit(1)
+
+ if options.tls_client_cert_optional:
+ logging.critical('TLS must be enabled for client authentication.')
+ sys.exit(1)
+
+ if not options.scan_dir:
+ options.scan_dir = options.websock_handlers
+
+ if options.use_basic_auth:
+ options.basic_auth_credential = 'Basic ' + base64.b64encode(
+ options.basic_auth_credential.encode('UTF-8')).decode()
+
+ try:
+ if options.thread_monitor_interval_in_sec > 0:
+ # Run a thread monitor to show the status of server threads for
+ # debugging.
+ server_util.ThreadMonitor(
+ options.thread_monitor_interval_in_sec).start()
+
+ server = WebSocketServer(options)
+ server.serve_forever()
+ except Exception as e:
+ logging.critical('mod_pywebsocket: %s' % e)
+ logging.critical('mod_pywebsocket: %s' % traceback.format_exc())
+ sys.exit(1)
+
+
+if __name__ == '__main__':
+ _main(sys.argv[1:])
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/stream.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/stream.py
new file mode 100644
index 0000000000..99095224cc
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/stream.py
@@ -0,0 +1,954 @@
+# 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.
+"""This file provides classes and helper functions for parsing/building frames
+of the WebSocket protocol (RFC 6455).
+
+Specification:
+http://tools.ietf.org/html/rfc6455
+"""
+
+from __future__ import absolute_import, division
+
+from collections import deque
+import logging
+import os
+import struct
+import time
+import socket
+import six
+
+from mod_pywebsocket import common
+from mod_pywebsocket import util
+from mod_pywebsocket._stream_exceptions import BadOperationException
+from mod_pywebsocket._stream_exceptions import ConnectionTerminatedException
+from mod_pywebsocket._stream_exceptions import InvalidFrameException
+from mod_pywebsocket._stream_exceptions import InvalidUTF8Exception
+from mod_pywebsocket._stream_exceptions import UnsupportedFrameException
+
+_NOOP_MASKER = util.NoopMasker()
+
+
+class Frame(object):
+ def __init__(self,
+ fin=1,
+ rsv1=0,
+ rsv2=0,
+ rsv3=0,
+ opcode=None,
+ payload=b''):
+ self.fin = fin
+ self.rsv1 = rsv1
+ self.rsv2 = rsv2
+ self.rsv3 = rsv3
+ self.opcode = opcode
+ self.payload = payload
+
+
+# Helper functions made public to be used for writing unittests for WebSocket
+# clients.
+
+
+def create_length_header(length, mask):
+ """Creates a length header.
+
+ Args:
+ length: Frame length. Must be less than 2^63.
+ mask: Mask bit. Must be boolean.
+
+ Raises:
+ ValueError: when bad data is given.
+ """
+
+ if mask:
+ mask_bit = 1 << 7
+ else:
+ mask_bit = 0
+
+ if length < 0:
+ raise ValueError('length must be non negative integer')
+ elif length <= 125:
+ return util.pack_byte(mask_bit | length)
+ elif length < (1 << 16):
+ return util.pack_byte(mask_bit | 126) + struct.pack('!H', length)
+ elif length < (1 << 63):
+ return util.pack_byte(mask_bit | 127) + struct.pack('!Q', length)
+ else:
+ raise ValueError('Payload is too big for one frame')
+
+
+def create_header(opcode, payload_length, fin, rsv1, rsv2, rsv3, mask):
+ """Creates a frame header.
+
+ Raises:
+ Exception: when bad data is given.
+ """
+
+ if opcode < 0 or 0xf < opcode:
+ raise ValueError('Opcode out of range')
+
+ if payload_length < 0 or (1 << 63) <= payload_length:
+ raise ValueError('payload_length out of range')
+
+ if (fin | rsv1 | rsv2 | rsv3) & ~1:
+ raise ValueError('FIN bit and Reserved bit parameter must be 0 or 1')
+
+ header = b''
+
+ first_byte = ((fin << 7)
+ | (rsv1 << 6) | (rsv2 << 5) | (rsv3 << 4)
+ | opcode)
+ header += util.pack_byte(first_byte)
+ header += create_length_header(payload_length, mask)
+
+ return header
+
+
+def _build_frame(header, body, mask):
+ if not mask:
+ return header + body
+
+ masking_nonce = os.urandom(4)
+ masker = util.RepeatedXorMasker(masking_nonce)
+
+ return header + masking_nonce + masker.mask(body)
+
+
+def _filter_and_format_frame_object(frame, mask, frame_filters):
+ for frame_filter in frame_filters:
+ frame_filter.filter(frame)
+
+ header = create_header(frame.opcode, len(frame.payload), frame.fin,
+ frame.rsv1, frame.rsv2, frame.rsv3, mask)
+ return _build_frame(header, frame.payload, mask)
+
+
+def create_binary_frame(message,
+ opcode=common.OPCODE_BINARY,
+ fin=1,
+ mask=False,
+ frame_filters=[]):
+ """Creates a simple binary frame with no extension, reserved bit."""
+
+ frame = Frame(fin=fin, opcode=opcode, payload=message)
+ return _filter_and_format_frame_object(frame, mask, frame_filters)
+
+
+def create_text_frame(message,
+ opcode=common.OPCODE_TEXT,
+ fin=1,
+ mask=False,
+ frame_filters=[]):
+ """Creates a simple text frame with no extension, reserved bit."""
+
+ encoded_message = message.encode('utf-8')
+ return create_binary_frame(encoded_message, opcode, fin, mask,
+ frame_filters)
+
+
+def parse_frame(receive_bytes,
+ logger=None,
+ ws_version=common.VERSION_HYBI_LATEST,
+ unmask_receive=True):
+ """Parses a frame. Returns a tuple containing each header field and
+ payload.
+
+ Args:
+ receive_bytes: a function that reads frame data from a stream or
+ something similar. The function takes length of the bytes to be
+ read. The function must raise ConnectionTerminatedException if
+ there is not enough data to be read.
+ logger: a logging object.
+ ws_version: the version of WebSocket protocol.
+ unmask_receive: unmask received frames. When received unmasked
+ frame, raises InvalidFrameException.
+
+ Raises:
+ ConnectionTerminatedException: when receive_bytes raises it.
+ InvalidFrameException: when the frame contains invalid data.
+ """
+
+ if not logger:
+ logger = logging.getLogger()
+
+ logger.log(common.LOGLEVEL_FINE, 'Receive the first 2 octets of a frame')
+
+ first_byte = ord(receive_bytes(1))
+ fin = (first_byte >> 7) & 1
+ rsv1 = (first_byte >> 6) & 1
+ rsv2 = (first_byte >> 5) & 1
+ rsv3 = (first_byte >> 4) & 1
+ opcode = first_byte & 0xf
+
+ second_byte = ord(receive_bytes(1))
+ mask = (second_byte >> 7) & 1
+ payload_length = second_byte & 0x7f
+
+ logger.log(
+ common.LOGLEVEL_FINE, 'FIN=%s, RSV1=%s, RSV2=%s, RSV3=%s, opcode=%s, '
+ 'Mask=%s, Payload_length=%s', fin, rsv1, rsv2, rsv3, opcode, mask,
+ payload_length)
+
+ if (mask == 1) != unmask_receive:
+ raise InvalidFrameException(
+ 'Mask bit on the received frame did\'nt match masking '
+ 'configuration for received frames')
+
+ # The HyBi and later specs disallow putting a value in 0x0-0xFFFF
+ # into the 8-octet extended payload length field (or 0x0-0xFD in
+ # 2-octet field).
+ valid_length_encoding = True
+ length_encoding_bytes = 1
+ if payload_length == 127:
+ logger.log(common.LOGLEVEL_FINE,
+ 'Receive 8-octet extended payload length')
+
+ extended_payload_length = receive_bytes(8)
+ payload_length = struct.unpack('!Q', extended_payload_length)[0]
+ if payload_length > 0x7FFFFFFFFFFFFFFF:
+ raise InvalidFrameException('Extended payload length >= 2^63')
+ if ws_version >= 13 and payload_length < 0x10000:
+ valid_length_encoding = False
+ length_encoding_bytes = 8
+
+ logger.log(common.LOGLEVEL_FINE, 'Decoded_payload_length=%s',
+ payload_length)
+ elif payload_length == 126:
+ logger.log(common.LOGLEVEL_FINE,
+ 'Receive 2-octet extended payload length')
+
+ extended_payload_length = receive_bytes(2)
+ payload_length = struct.unpack('!H', extended_payload_length)[0]
+ if ws_version >= 13 and payload_length < 126:
+ valid_length_encoding = False
+ length_encoding_bytes = 2
+
+ logger.log(common.LOGLEVEL_FINE, 'Decoded_payload_length=%s',
+ payload_length)
+
+ if not valid_length_encoding:
+ logger.warning(
+ 'Payload length is not encoded using the minimal number of '
+ 'bytes (%d is encoded using %d bytes)', payload_length,
+ length_encoding_bytes)
+
+ if mask == 1:
+ logger.log(common.LOGLEVEL_FINE, 'Receive mask')
+
+ masking_nonce = receive_bytes(4)
+ masker = util.RepeatedXorMasker(masking_nonce)
+
+ logger.log(common.LOGLEVEL_FINE, 'Mask=%r', masking_nonce)
+ else:
+ masker = _NOOP_MASKER
+
+ logger.log(common.LOGLEVEL_FINE, 'Receive payload data')
+ if logger.isEnabledFor(common.LOGLEVEL_FINE):
+ receive_start = time.time()
+
+ raw_payload_bytes = receive_bytes(payload_length)
+
+ if logger.isEnabledFor(common.LOGLEVEL_FINE):
+ # pylint --py3k W1619
+ logger.log(
+ common.LOGLEVEL_FINE, 'Done receiving payload data at %s MB/s',
+ payload_length / (time.time() - receive_start) / 1000 / 1000)
+ logger.log(common.LOGLEVEL_FINE, 'Unmask payload data')
+
+ if logger.isEnabledFor(common.LOGLEVEL_FINE):
+ unmask_start = time.time()
+
+ unmasked_bytes = masker.mask(raw_payload_bytes)
+
+ if logger.isEnabledFor(common.LOGLEVEL_FINE):
+ # pylint --py3k W1619
+ logger.log(common.LOGLEVEL_FINE,
+ 'Done unmasking payload data at %s MB/s',
+ payload_length / (time.time() - unmask_start) / 1000 / 1000)
+
+ return opcode, unmasked_bytes, fin, rsv1, rsv2, rsv3
+
+
+class FragmentedFrameBuilder(object):
+ """A stateful class to send a message as fragments."""
+ def __init__(self, mask, frame_filters=[], encode_utf8=True):
+ """Constructs an instance."""
+
+ self._mask = mask
+ self._frame_filters = frame_filters
+ # This is for skipping UTF-8 encoding when building text type frames
+ # from compressed data.
+ self._encode_utf8 = encode_utf8
+
+ self._started = False
+
+ # Hold opcode of the first frame in messages to verify types of other
+ # frames in the message are all the same.
+ self._opcode = common.OPCODE_TEXT
+
+ def build(self, payload_data, end, binary):
+ if binary:
+ frame_type = common.OPCODE_BINARY
+ else:
+ frame_type = common.OPCODE_TEXT
+ if self._started:
+ if self._opcode != frame_type:
+ raise ValueError('Message types are different in frames for '
+ 'the same message')
+ opcode = common.OPCODE_CONTINUATION
+ else:
+ opcode = frame_type
+ self._opcode = frame_type
+
+ if end:
+ self._started = False
+ fin = 1
+ else:
+ self._started = True
+ fin = 0
+
+ if binary or not self._encode_utf8:
+ return create_binary_frame(payload_data, opcode, fin, self._mask,
+ self._frame_filters)
+ else:
+ return create_text_frame(payload_data, opcode, fin, self._mask,
+ self._frame_filters)
+
+
+def _create_control_frame(opcode, body, mask, frame_filters):
+ frame = Frame(opcode=opcode, payload=body)
+
+ for frame_filter in frame_filters:
+ frame_filter.filter(frame)
+
+ if len(frame.payload) > 125:
+ raise BadOperationException(
+ 'Payload data size of control frames must be 125 bytes or less')
+
+ header = create_header(frame.opcode, len(frame.payload), frame.fin,
+ frame.rsv1, frame.rsv2, frame.rsv3, mask)
+ return _build_frame(header, frame.payload, mask)
+
+
+def create_ping_frame(body, mask=False, frame_filters=[]):
+ return _create_control_frame(common.OPCODE_PING, body, mask, frame_filters)
+
+
+def create_pong_frame(body, mask=False, frame_filters=[]):
+ return _create_control_frame(common.OPCODE_PONG, body, mask, frame_filters)
+
+
+def create_close_frame(body, mask=False, frame_filters=[]):
+ return _create_control_frame(common.OPCODE_CLOSE, body, mask,
+ frame_filters)
+
+
+def create_closing_handshake_body(code, reason):
+ body = b''
+ if code is not None:
+ if (code > common.STATUS_USER_PRIVATE_MAX
+ or code < common.STATUS_NORMAL_CLOSURE):
+ raise BadOperationException('Status code is out of range')
+ if (code == common.STATUS_NO_STATUS_RECEIVED
+ or code == common.STATUS_ABNORMAL_CLOSURE
+ or code == common.STATUS_TLS_HANDSHAKE):
+ raise BadOperationException('Status code is reserved pseudo '
+ 'code')
+ encoded_reason = reason.encode('utf-8')
+ body = struct.pack('!H', code) + encoded_reason
+ return body
+
+
+class StreamOptions(object):
+ """Holds option values to configure Stream objects."""
+ def __init__(self):
+ """Constructs StreamOptions."""
+
+ # Filters applied to frames.
+ self.outgoing_frame_filters = []
+ self.incoming_frame_filters = []
+
+ # Filters applied to messages. Control frames are not affected by them.
+ self.outgoing_message_filters = []
+ self.incoming_message_filters = []
+
+ self.encode_text_message_to_utf8 = True
+ self.mask_send = False
+ self.unmask_receive = True
+
+
+class Stream(object):
+ """A class for parsing/building frames of the WebSocket protocol
+ (RFC 6455).
+ """
+ def __init__(self, request, options):
+ """Constructs an instance.
+
+ Args:
+ request: mod_python request.
+ """
+
+ self._logger = util.get_class_logger(self)
+
+ self._options = options
+ self._request = request
+
+ self._request.client_terminated = False
+ self._request.server_terminated = False
+
+ # Holds body of received fragments.
+ self._received_fragments = []
+ # Holds the opcode of the first fragment.
+ self._original_opcode = None
+
+ self._writer = FragmentedFrameBuilder(
+ self._options.mask_send, self._options.outgoing_frame_filters,
+ self._options.encode_text_message_to_utf8)
+
+ self._ping_queue = deque()
+
+ def _read(self, length):
+ """Reads length bytes from connection. In case we catch any exception,
+ prepends remote address to the exception message and raise again.
+
+ Raises:
+ ConnectionTerminatedException: when read returns empty string.
+ """
+
+ try:
+ read_bytes = self._request.connection.read(length)
+ if not read_bytes:
+ raise ConnectionTerminatedException(
+ 'Receiving %d byte failed. Peer (%r) closed connection' %
+ (length, (self._request.connection.remote_addr, )))
+ return read_bytes
+ except IOError as e:
+ # Also catch an IOError because mod_python throws it.
+ raise ConnectionTerminatedException(
+ 'Receiving %d byte failed. IOError (%s) occurred' %
+ (length, e))
+
+ def _write(self, bytes_to_write):
+ """Writes given bytes to connection. In case we catch any exception,
+ prepends remote address to the exception message and raise again.
+ """
+
+ try:
+ self._request.connection.write(bytes_to_write)
+ except Exception as e:
+ util.prepend_message_to_exception(
+ 'Failed to send message to %r: ' %
+ (self._request.connection.remote_addr, ), e)
+ raise
+
+ def receive_bytes(self, length):
+ """Receives multiple bytes. Retries read when we couldn't receive the
+ specified amount. This method returns byte strings.
+
+ Raises:
+ ConnectionTerminatedException: when read returns empty string.
+ """
+
+ read_bytes = []
+ while length > 0:
+ new_read_bytes = self._read(length)
+ read_bytes.append(new_read_bytes)
+ length -= len(new_read_bytes)
+ return b''.join(read_bytes)
+
+ def _read_until(self, delim_char):
+ """Reads bytes until we encounter delim_char. The result will not
+ contain delim_char.
+
+ Raises:
+ ConnectionTerminatedException: when read returns empty string.
+ """
+
+ read_bytes = []
+ while True:
+ ch = self._read(1)
+ if ch == delim_char:
+ break
+ read_bytes.append(ch)
+ return b''.join(read_bytes)
+
+ def _receive_frame(self):
+ """Receives a frame and return data in the frame as a tuple containing
+ each header field and payload separately.
+
+ Raises:
+ ConnectionTerminatedException: when read returns empty
+ string.
+ InvalidFrameException: when the frame contains invalid data.
+ """
+ def _receive_bytes(length):
+ return self.receive_bytes(length)
+
+ return parse_frame(receive_bytes=_receive_bytes,
+ logger=self._logger,
+ ws_version=self._request.ws_version,
+ unmask_receive=self._options.unmask_receive)
+
+ def _receive_frame_as_frame_object(self):
+ opcode, unmasked_bytes, fin, rsv1, rsv2, rsv3 = self._receive_frame()
+
+ return Frame(fin=fin,
+ rsv1=rsv1,
+ rsv2=rsv2,
+ rsv3=rsv3,
+ opcode=opcode,
+ payload=unmasked_bytes)
+
+ def receive_filtered_frame(self):
+ """Receives a frame and applies frame filters and message filters.
+ The frame to be received must satisfy following conditions:
+ - The frame is not fragmented.
+ - The opcode of the frame is TEXT or BINARY.
+
+ DO NOT USE this method except for testing purpose.
+ """
+
+ frame = self._receive_frame_as_frame_object()
+ if not frame.fin:
+ raise InvalidFrameException(
+ 'Segmented frames must not be received via '
+ 'receive_filtered_frame()')
+ if (frame.opcode != common.OPCODE_TEXT
+ and frame.opcode != common.OPCODE_BINARY):
+ raise InvalidFrameException(
+ 'Control frames must not be received via '
+ 'receive_filtered_frame()')
+
+ for frame_filter in self._options.incoming_frame_filters:
+ frame_filter.filter(frame)
+ for message_filter in self._options.incoming_message_filters:
+ frame.payload = message_filter.filter(frame.payload)
+ return frame
+
+ def send_message(self, message, end=True, binary=False):
+ """Send message.
+
+ Args:
+ message: text in unicode or binary in str to send.
+ binary: send message as binary frame.
+
+ Raises:
+ BadOperationException: when called on a server-terminated
+ connection or called with inconsistent message type or
+ binary parameter.
+ """
+
+ if self._request.server_terminated:
+ raise BadOperationException(
+ 'Requested send_message after sending out a closing handshake')
+
+ if binary and isinstance(message, six.text_type):
+ raise BadOperationException(
+ 'Message for binary frame must not be instance of Unicode')
+
+ for message_filter in self._options.outgoing_message_filters:
+ message = message_filter.filter(message, end, binary)
+
+ try:
+ # Set this to any positive integer to limit maximum size of data in
+ # payload data of each frame.
+ MAX_PAYLOAD_DATA_SIZE = -1
+
+ if MAX_PAYLOAD_DATA_SIZE <= 0:
+ self._write(self._writer.build(message, end, binary))
+ return
+
+ bytes_written = 0
+ while True:
+ end_for_this_frame = end
+ bytes_to_write = len(message) - bytes_written
+ if (MAX_PAYLOAD_DATA_SIZE > 0
+ and bytes_to_write > MAX_PAYLOAD_DATA_SIZE):
+ end_for_this_frame = False
+ bytes_to_write = MAX_PAYLOAD_DATA_SIZE
+
+ frame = self._writer.build(
+ message[bytes_written:bytes_written + bytes_to_write],
+ end_for_this_frame, binary)
+ self._write(frame)
+
+ bytes_written += bytes_to_write
+
+ # This if must be placed here (the end of while block) so that
+ # at least one frame is sent.
+ if len(message) <= bytes_written:
+ break
+ except ValueError as e:
+ raise BadOperationException(e)
+
+ def _get_message_from_frame(self, frame):
+ """Gets a message from frame. If the message is composed of fragmented
+ frames and the frame is not the last fragmented frame, this method
+ returns None. The whole message will be returned when the last
+ fragmented frame is passed to this method.
+
+ Raises:
+ InvalidFrameException: when the frame doesn't match defragmentation
+ context, or the frame contains invalid data.
+ """
+
+ if frame.opcode == common.OPCODE_CONTINUATION:
+ if not self._received_fragments:
+ if frame.fin:
+ raise InvalidFrameException(
+ 'Received a termination frame but fragmentation '
+ 'not started')
+ else:
+ raise InvalidFrameException(
+ 'Received an intermediate frame but '
+ 'fragmentation not started')
+
+ if frame.fin:
+ # End of fragmentation frame
+ self._received_fragments.append(frame.payload)
+ message = b''.join(self._received_fragments)
+ self._received_fragments = []
+ return message
+ else:
+ # Intermediate frame
+ self._received_fragments.append(frame.payload)
+ return None
+ else:
+ if self._received_fragments:
+ if frame.fin:
+ raise InvalidFrameException(
+ 'Received an unfragmented frame without '
+ 'terminating existing fragmentation')
+ else:
+ raise InvalidFrameException(
+ 'New fragmentation started without terminating '
+ 'existing fragmentation')
+
+ if frame.fin:
+ # Unfragmented frame
+
+ self._original_opcode = frame.opcode
+ return frame.payload
+ else:
+ # Start of fragmentation frame
+
+ if common.is_control_opcode(frame.opcode):
+ raise InvalidFrameException(
+ 'Control frames must not be fragmented')
+
+ self._original_opcode = frame.opcode
+ self._received_fragments.append(frame.payload)
+ return None
+
+ def _process_close_message(self, message):
+ """Processes close message.
+
+ Args:
+ message: close message.
+
+ Raises:
+ InvalidFrameException: when the message is invalid.
+ """
+
+ self._request.client_terminated = True
+
+ # Status code is optional. We can have status reason only if we
+ # have status code. Status reason can be empty string. So,
+ # allowed cases are
+ # - no application data: no code no reason
+ # - 2 octet of application data: has code but no reason
+ # - 3 or more octet of application data: both code and reason
+ if len(message) == 0:
+ self._logger.debug('Received close frame (empty body)')
+ self._request.ws_close_code = common.STATUS_NO_STATUS_RECEIVED
+ elif len(message) == 1:
+ raise InvalidFrameException(
+ 'If a close frame has status code, the length of '
+ 'status code must be 2 octet')
+ elif len(message) >= 2:
+ self._request.ws_close_code = struct.unpack('!H', message[0:2])[0]
+ self._request.ws_close_reason = message[2:].decode(
+ 'utf-8', 'replace')
+ self._logger.debug('Received close frame (code=%d, reason=%r)',
+ self._request.ws_close_code,
+ self._request.ws_close_reason)
+
+ # As we've received a close frame, no more data is coming over the
+ # socket. We can now safely close the socket without worrying about
+ # RST sending.
+
+ if self._request.server_terminated:
+ self._logger.debug(
+ 'Received ack for server-initiated closing handshake')
+ return
+
+ self._logger.debug('Received client-initiated closing handshake')
+
+ code = common.STATUS_NORMAL_CLOSURE
+ reason = ''
+ if hasattr(self._request, '_dispatcher'):
+ dispatcher = self._request._dispatcher
+ code, reason = dispatcher.passive_closing_handshake(self._request)
+ if code is None and reason is not None and len(reason) > 0:
+ self._logger.warning(
+ 'Handler specified reason despite code being None')
+ reason = ''
+ if reason is None:
+ reason = ''
+ self._send_closing_handshake(code, reason)
+ self._logger.debug(
+ 'Acknowledged closing handshake initiated by the peer '
+ '(code=%r, reason=%r)', code, reason)
+
+ def _process_ping_message(self, message):
+ """Processes ping message.
+
+ Args:
+ message: ping message.
+ """
+
+ try:
+ handler = self._request.on_ping_handler
+ if handler:
+ handler(self._request, message)
+ return
+ except AttributeError:
+ pass
+ self._send_pong(message)
+
+ def _process_pong_message(self, message):
+ """Processes pong message.
+
+ Args:
+ message: pong message.
+ """
+
+ # TODO(tyoshino): Add ping timeout handling.
+
+ inflight_pings = deque()
+
+ while True:
+ try:
+ expected_body = self._ping_queue.popleft()
+ if expected_body == message:
+ # inflight_pings contains pings ignored by the
+ # other peer. Just forget them.
+ self._logger.debug(
+ 'Ping %r is acked (%d pings were ignored)',
+ expected_body, len(inflight_pings))
+ break
+ else:
+ inflight_pings.append(expected_body)
+ except IndexError:
+ # The received pong was unsolicited pong. Keep the
+ # ping queue as is.
+ self._ping_queue = inflight_pings
+ self._logger.debug('Received a unsolicited pong')
+ break
+
+ try:
+ handler = self._request.on_pong_handler
+ if handler:
+ handler(self._request, message)
+ except AttributeError:
+ pass
+
+ def receive_message(self):
+ """Receive a WebSocket frame and return its payload as a text in
+ unicode or a binary in str.
+
+ Returns:
+ payload data of the frame
+ - as unicode instance if received text frame
+ - as str instance if received binary frame
+ or None iff received closing handshake.
+ Raises:
+ BadOperationException: when called on a client-terminated
+ connection.
+ ConnectionTerminatedException: when read returns empty
+ string.
+ InvalidFrameException: when the frame contains invalid
+ data.
+ UnsupportedFrameException: when the received frame has
+ flags, opcode we cannot handle. You can ignore this
+ exception and continue receiving the next frame.
+ """
+
+ if self._request.client_terminated:
+ raise BadOperationException(
+ 'Requested receive_message after receiving a closing '
+ 'handshake')
+
+ while True:
+ # mp_conn.read will block if no bytes are available.
+
+ frame = self._receive_frame_as_frame_object()
+
+ # Check the constraint on the payload size for control frames
+ # before extension processes the frame.
+ # See also http://tools.ietf.org/html/rfc6455#section-5.5
+ if (common.is_control_opcode(frame.opcode)
+ and len(frame.payload) > 125):
+ raise InvalidFrameException(
+ 'Payload data size of control frames must be 125 bytes or '
+ 'less')
+
+ for frame_filter in self._options.incoming_frame_filters:
+ frame_filter.filter(frame)
+
+ if frame.rsv1 or frame.rsv2 or frame.rsv3:
+ raise UnsupportedFrameException(
+ 'Unsupported flag is set (rsv = %d%d%d)' %
+ (frame.rsv1, frame.rsv2, frame.rsv3))
+
+ message = self._get_message_from_frame(frame)
+ if message is None:
+ continue
+
+ for message_filter in self._options.incoming_message_filters:
+ message = message_filter.filter(message)
+
+ if self._original_opcode == common.OPCODE_TEXT:
+ # The WebSocket protocol section 4.4 specifies that invalid
+ # characters must be replaced with U+fffd REPLACEMENT
+ # CHARACTER.
+ try:
+ return message.decode('utf-8')
+ except UnicodeDecodeError as e:
+ raise InvalidUTF8Exception(e)
+ elif self._original_opcode == common.OPCODE_BINARY:
+ return message
+ elif self._original_opcode == common.OPCODE_CLOSE:
+ self._process_close_message(message)
+ return None
+ elif self._original_opcode == common.OPCODE_PING:
+ self._process_ping_message(message)
+ elif self._original_opcode == common.OPCODE_PONG:
+ self._process_pong_message(message)
+ else:
+ raise UnsupportedFrameException('Opcode %d is not supported' %
+ self._original_opcode)
+
+ def _send_closing_handshake(self, code, reason):
+ body = create_closing_handshake_body(code, reason)
+ frame = create_close_frame(
+ body,
+ mask=self._options.mask_send,
+ frame_filters=self._options.outgoing_frame_filters)
+
+ self._request.server_terminated = True
+
+ self._write(frame)
+
+ def close_connection(self,
+ code=common.STATUS_NORMAL_CLOSURE,
+ reason='',
+ wait_response=True):
+ """Closes a WebSocket connection. Note that this method blocks until
+ it receives acknowledgement to the closing handshake.
+
+ Args:
+ code: Status code for close frame. If code is None, a close
+ frame with empty body will be sent.
+ reason: string representing close reason.
+ wait_response: True when caller want to wait the response.
+ Raises:
+ BadOperationException: when reason is specified with code None
+ or reason is not an instance of both str and unicode.
+ """
+
+ if self._request.server_terminated:
+ self._logger.debug(
+ 'Requested close_connection but server is already terminated')
+ return
+
+ # When we receive a close frame, we call _process_close_message().
+ # _process_close_message() immediately acknowledges to the
+ # server-initiated closing handshake and sets server_terminated to
+ # True. So, here we can assume that we haven't received any close
+ # frame. We're initiating a closing handshake.
+
+ if code is None:
+ if reason is not None and len(reason) > 0:
+ raise BadOperationException(
+ 'close reason must not be specified if code is None')
+ reason = ''
+ else:
+ if not isinstance(reason, bytes) and not isinstance(
+ reason, six.text_type):
+ raise BadOperationException(
+ 'close reason must be an instance of bytes or unicode')
+
+ self._send_closing_handshake(code, reason)
+ self._logger.debug('Initiated closing handshake (code=%r, reason=%r)',
+ code, reason)
+
+ if (code == common.STATUS_GOING_AWAY
+ or code == common.STATUS_PROTOCOL_ERROR) or not wait_response:
+ # It doesn't make sense to wait for a close frame if the reason is
+ # protocol error or that the server is going away. For some of
+ # other reasons, it might not make sense to wait for a close frame,
+ # but it's not clear, yet.
+ return
+
+ # TODO(ukai): 2. wait until the /client terminated/ flag has been set,
+ # or until a server-defined timeout expires.
+ #
+ # For now, we expect receiving closing handshake right after sending
+ # out closing handshake.
+ message = self.receive_message()
+ if message is not None:
+ raise ConnectionTerminatedException(
+ 'Didn\'t receive valid ack for closing handshake')
+ # TODO: 3. close the WebSocket connection.
+ # note: mod_python Connection (mp_conn) doesn't have close method.
+
+ def send_ping(self, body, binary=False):
+ if not binary and isinstance(body, six.text_type):
+ body = body.encode('UTF-8')
+ frame = create_ping_frame(body, self._options.mask_send,
+ self._options.outgoing_frame_filters)
+ self._write(frame)
+
+ self._ping_queue.append(body)
+
+ def _send_pong(self, body):
+ frame = create_pong_frame(body, self._options.mask_send,
+ self._options.outgoing_frame_filters)
+ self._write(frame)
+
+ def get_last_received_opcode(self):
+ """Returns the opcode of the WebSocket message which the last received
+ frame belongs to. The return value is valid iff immediately after
+ receive_message call.
+ """
+
+ return self._original_opcode
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/util.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/util.py
new file mode 100644
index 0000000000..e164e6b8e4
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/util.py
@@ -0,0 +1,405 @@
+# 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.
+"""WebSocket utilities."""
+
+from __future__ import absolute_import
+import array
+import errno
+import logging
+import os
+import re
+import six
+from six.moves import map
+from six.moves import range
+import socket
+import struct
+import zlib
+
+try:
+ from mod_pywebsocket import fast_masking
+except ImportError:
+ pass
+
+
+def prepend_message_to_exception(message, exc):
+ """Prepend message to the exception."""
+ exc.args = (message + str(exc), )
+ return
+
+
+def __translate_interp(interp, cygwin_path):
+ """Translate interp program path for Win32 python to run cygwin program
+ (e.g. perl). Note that it doesn't support path that contains space,
+ which is typically true for Unix, where #!-script is written.
+ For Win32 python, cygwin_path is a directory of cygwin binaries.
+
+ Args:
+ interp: interp command line
+ cygwin_path: directory name of cygwin binary, or None
+ Returns:
+ translated interp command line.
+ """
+ if not cygwin_path:
+ return interp
+ m = re.match('^[^ ]*/([^ ]+)( .*)?', interp)
+ if m:
+ cmd = os.path.join(cygwin_path, m.group(1))
+ return cmd + m.group(2)
+ return interp
+
+
+def get_script_interp(script_path, cygwin_path=None):
+ r"""Get #!-interpreter command line from the script.
+
+ It also fixes command path. When Cygwin Python is used, e.g. in WebKit,
+ it could run "/usr/bin/perl -wT hello.pl".
+ When Win32 Python is used, e.g. in Chromium, it couldn't. So, fix
+ "/usr/bin/perl" to "<cygwin_path>\perl.exe".
+
+ Args:
+ script_path: pathname of the script
+ cygwin_path: directory name of cygwin binary, or None
+ Returns:
+ #!-interpreter command line, or None if it is not #!-script.
+ """
+ fp = open(script_path)
+ line = fp.readline()
+ fp.close()
+ m = re.match('^#!(.*)', line)
+ if m:
+ return __translate_interp(m.group(1), cygwin_path)
+ return None
+
+
+def wrap_popen3_for_win(cygwin_path):
+ """Wrap popen3 to support #!-script on Windows.
+
+ Args:
+ cygwin_path: path for cygwin binary if command path is needed to be
+ translated. None if no translation required.
+ """
+ __orig_popen3 = os.popen3
+
+ def __wrap_popen3(cmd, mode='t', bufsize=-1):
+ cmdline = cmd.split(' ')
+ interp = get_script_interp(cmdline[0], cygwin_path)
+ if interp:
+ cmd = interp + ' ' + cmd
+ return __orig_popen3(cmd, mode, bufsize)
+
+ os.popen3 = __wrap_popen3
+
+
+def hexify(s):
+ return ' '.join(['%02x' % x for x in six.iterbytes(s)])
+
+
+def get_class_logger(o):
+ """Return the logging class information."""
+ return logging.getLogger('%s.%s' %
+ (o.__class__.__module__, o.__class__.__name__))
+
+
+def pack_byte(b):
+ """Pack an integer to network-ordered byte"""
+ return struct.pack('!B', b)
+
+
+class NoopMasker(object):
+ """A NoOp masking object.
+
+ This has the same interface as RepeatedXorMasker but just returns
+ the string passed in without making any change.
+ """
+ def __init__(self):
+ """NoOp."""
+ pass
+
+ def mask(self, s):
+ """NoOp."""
+ return s
+
+
+class RepeatedXorMasker(object):
+ """A masking object that applies XOR on the string.
+
+ Applies XOR on the byte string given to mask method with the masking bytes
+ given to the constructor repeatedly. This object remembers the position
+ in the masking bytes the last mask method call ended and resumes from
+ that point on the next mask method call.
+ """
+ def __init__(self, masking_key):
+ self._masking_key = masking_key
+ self._masking_key_index = 0
+
+ def _mask_using_swig(self, s):
+ """Perform the mask via SWIG."""
+ masked_data = fast_masking.mask(s, self._masking_key,
+ self._masking_key_index)
+ self._masking_key_index = ((self._masking_key_index + len(s)) %
+ len(self._masking_key))
+ return masked_data
+
+ def _mask_using_array(self, s):
+ """Perform the mask via python."""
+ if isinstance(s, six.text_type):
+ raise Exception(
+ 'Masking Operation should not process unicode strings')
+
+ result = bytearray(s)
+
+ # Use temporary local variables to eliminate the cost to access
+ # attributes
+ masking_key = [c for c in six.iterbytes(self._masking_key)]
+ masking_key_size = len(masking_key)
+ masking_key_index = self._masking_key_index
+
+ for i in range(len(result)):
+ result[i] ^= masking_key[masking_key_index]
+ masking_key_index = (masking_key_index + 1) % masking_key_size
+
+ self._masking_key_index = masking_key_index
+
+ return bytes(result)
+
+ if 'fast_masking' in globals():
+ mask = _mask_using_swig
+ else:
+ mask = _mask_using_array
+
+
+# By making wbits option negative, we can suppress CMF/FLG (2 octet) and
+# ADLER32 (4 octet) fields of zlib so that we can use zlib module just as
+# deflate library. DICTID won't be added as far as we don't set dictionary.
+# LZ77 window of 32K will be used for both compression and decompression.
+# For decompression, we can just use 32K to cover any windows size. For
+# compression, we use 32K so receivers must use 32K.
+#
+# Compression level is Z_DEFAULT_COMPRESSION. We don't have to match level
+# to decode.
+#
+# See zconf.h, deflate.cc, inflate.cc of zlib library, and zlibmodule.c of
+# Python. See also RFC1950 (ZLIB 3.3).
+
+
+class _Deflater(object):
+ def __init__(self, window_bits):
+ self._logger = get_class_logger(self)
+
+ # Using the smallest window bits of 9 for generating input frames.
+ # On WebSocket spec, the smallest window bit is 8. However, zlib does
+ # not accept window_bit = 8.
+ #
+ # Because of a zlib deflate quirk, back-references will not use the
+ # entire range of 1 << window_bits, but will instead use a restricted
+ # range of (1 << window_bits) - 262. With an increased window_bits = 9,
+ # back-references will be within a range of 250. These can still be
+ # decompressed with window_bits = 8 and the 256-byte window used there.
+ #
+ # Similar disscussions can be found in https://crbug.com/691074
+ window_bits = max(window_bits, 9)
+
+ self._compress = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
+ zlib.DEFLATED, -window_bits)
+
+ def compress(self, bytes):
+ compressed_bytes = self._compress.compress(bytes)
+ self._logger.debug('Compress input %r', bytes)
+ self._logger.debug('Compress result %r', compressed_bytes)
+ return compressed_bytes
+
+ def compress_and_flush(self, bytes):
+ compressed_bytes = self._compress.compress(bytes)
+ compressed_bytes += self._compress.flush(zlib.Z_SYNC_FLUSH)
+ self._logger.debug('Compress input %r', bytes)
+ self._logger.debug('Compress result %r', compressed_bytes)
+ return compressed_bytes
+
+ def compress_and_finish(self, bytes):
+ compressed_bytes = self._compress.compress(bytes)
+ compressed_bytes += self._compress.flush(zlib.Z_FINISH)
+ self._logger.debug('Compress input %r', bytes)
+ self._logger.debug('Compress result %r', compressed_bytes)
+ return compressed_bytes
+
+
+class _Inflater(object):
+ def __init__(self, window_bits):
+ self._logger = get_class_logger(self)
+ self._window_bits = window_bits
+
+ self._unconsumed = b''
+
+ self.reset()
+
+ def decompress(self, size):
+ if not (size == -1 or size > 0):
+ raise Exception('size must be -1 or positive')
+
+ data = b''
+
+ while True:
+ data += self._decompress.decompress(self._unconsumed,
+ max(0, size - len(data)))
+ self._unconsumed = self._decompress.unconsumed_tail
+ if self._decompress.unused_data:
+ # Encountered a last block (i.e. a block with BFINAL = 1) and
+ # found a new stream (unused_data). We cannot use the same
+ # zlib.Decompress object for the new stream. Create a new
+ # Decompress object to decompress the new one.
+ #
+ # It's fine to ignore unconsumed_tail if unused_data is not
+ # empty.
+ self._unconsumed = self._decompress.unused_data
+ self.reset()
+ if size >= 0 and len(data) == size:
+ # data is filled. Don't call decompress again.
+ break
+ else:
+ # Re-invoke Decompress.decompress to try to decompress all
+ # available bytes before invoking read which blocks until
+ # any new byte is available.
+ continue
+ else:
+ # Here, since unused_data is empty, even if unconsumed_tail is
+ # not empty, bytes of requested length are already in data. We
+ # don't have to "continue" here.
+ break
+
+ if data:
+ self._logger.debug('Decompressed %r', data)
+ return data
+
+ def append(self, data):
+ self._logger.debug('Appended %r', data)
+ self._unconsumed += data
+
+ def reset(self):
+ self._logger.debug('Reset')
+ self._decompress = zlib.decompressobj(-self._window_bits)
+
+
+# Compresses/decompresses given octets using the method introduced in RFC1979.
+
+
+class _RFC1979Deflater(object):
+ """A compressor class that applies DEFLATE to given byte sequence and
+ flushes using the algorithm described in the RFC1979 section 2.1.
+ """
+ def __init__(self, window_bits, no_context_takeover):
+ self._deflater = None
+ if window_bits is None:
+ window_bits = zlib.MAX_WBITS
+ self._window_bits = window_bits
+ self._no_context_takeover = no_context_takeover
+
+ def filter(self, bytes, end=True, bfinal=False):
+ if self._deflater is None:
+ self._deflater = _Deflater(self._window_bits)
+
+ if bfinal:
+ result = self._deflater.compress_and_finish(bytes)
+ # Add a padding block with BFINAL = 0 and BTYPE = 0.
+ result = result + pack_byte(0)
+ self._deflater = None
+ return result
+
+ result = self._deflater.compress_and_flush(bytes)
+ if end:
+ # Strip last 4 octets which is LEN and NLEN field of a
+ # non-compressed block added for Z_SYNC_FLUSH.
+ result = result[:-4]
+
+ if self._no_context_takeover and end:
+ self._deflater = None
+
+ return result
+
+
+class _RFC1979Inflater(object):
+ """A decompressor class a la RFC1979.
+
+ A decompressor class for byte sequence compressed and flushed following
+ the algorithm described in the RFC1979 section 2.1.
+ """
+ def __init__(self, window_bits=zlib.MAX_WBITS):
+ self._inflater = _Inflater(window_bits)
+
+ def filter(self, bytes):
+ # Restore stripped LEN and NLEN field of a non-compressed block added
+ # for Z_SYNC_FLUSH.
+ self._inflater.append(bytes + b'\x00\x00\xff\xff')
+ return self._inflater.decompress(-1)
+
+
+class DeflateSocket(object):
+ """A wrapper class for socket object to intercept send and recv to perform
+ deflate compression and decompression transparently.
+ """
+
+ # Size of the buffer passed to recv to receive compressed data.
+ _RECV_SIZE = 4096
+
+ def __init__(self, socket):
+ self._socket = socket
+
+ self._logger = get_class_logger(self)
+
+ self._deflater = _Deflater(zlib.MAX_WBITS)
+ self._inflater = _Inflater(zlib.MAX_WBITS)
+
+ def recv(self, size):
+ """Receives data from the socket specified on the construction up
+ to the specified size. Once any data is available, returns it even
+ if it's smaller than the specified size.
+ """
+
+ # TODO(tyoshino): Allow call with size=0. It should block until any
+ # decompressed data is available.
+ if size <= 0:
+ raise Exception('Non-positive size passed')
+ while True:
+ data = self._inflater.decompress(size)
+ if len(data) != 0:
+ return data
+
+ read_data = self._socket.recv(DeflateSocket._RECV_SIZE)
+ if not read_data:
+ return b''
+ self._inflater.append(read_data)
+
+ def sendall(self, bytes):
+ self.send(bytes)
+
+ def send(self, bytes):
+ self._socket.sendall(self._deflater.compress_and_flush(bytes))
+ return len(bytes)
+
+
+# vi:sts=4 sw=4 et
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/websocket_server.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/websocket_server.py
new file mode 100644
index 0000000000..df8cd393c7
--- /dev/null
+++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/websocket_server.py
@@ -0,0 +1,285 @@
+# Copyright 2020, 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.
+"""Standalone WebsocketServer
+
+This file deals with the main module of standalone server. Although it is fine
+to import this file directly to use WebSocketServer, it is strongly recommended
+to use standalone.py, since it is intended to act as a skeleton of this module.
+"""
+
+from __future__ import absolute_import
+from six.moves import BaseHTTPServer
+from six.moves import socketserver
+import logging
+import re
+import select
+import socket
+import ssl
+import threading
+import traceback
+
+from mod_pywebsocket import dispatch
+from mod_pywebsocket import util
+from mod_pywebsocket.request_handler import WebSocketRequestHandler
+
+
+def _alias_handlers(dispatcher, websock_handlers_map_file):
+ """Set aliases specified in websock_handler_map_file in dispatcher.
+
+ Args:
+ dispatcher: dispatch.Dispatcher instance
+ websock_handler_map_file: alias map file
+ """
+
+ with open(websock_handlers_map_file) as f:
+ for line in f:
+ if line[0] == '#' or line.isspace():
+ continue
+ m = re.match('(\S+)\s+(\S+)$', line)
+ if not m:
+ logging.warning('Wrong format in map file:' + line)
+ continue
+ try:
+ dispatcher.add_resource_path_alias(m.group(1), m.group(2))
+ except dispatch.DispatchException as e:
+ logging.error(str(e))
+
+
+class WebSocketServer(socketserver.ThreadingMixIn, BaseHTTPServer.HTTPServer):
+ """HTTPServer specialized for WebSocket."""
+
+ # Overrides SocketServer.ThreadingMixIn.daemon_threads
+ daemon_threads = True
+ # Overrides BaseHTTPServer.HTTPServer.allow_reuse_address
+ allow_reuse_address = True
+
+ def __init__(self, options):
+ """Override SocketServer.TCPServer.__init__ to set SSL enabled
+ socket object to self.socket before server_bind and server_activate,
+ if necessary.
+ """
+
+ # Share a Dispatcher among request handlers to save time for
+ # instantiation. Dispatcher can be shared because it is thread-safe.
+ options.dispatcher = dispatch.Dispatcher(
+ options.websock_handlers, options.scan_dir,
+ options.allow_handlers_outside_root_dir)
+ if options.websock_handlers_map_file:
+ _alias_handlers(options.dispatcher,
+ options.websock_handlers_map_file)
+ warnings = options.dispatcher.source_warnings()
+ if warnings:
+ for warning in warnings:
+ logging.warning('Warning in source loading: %s' % warning)
+
+ self._logger = util.get_class_logger(self)
+
+ self.request_queue_size = options.request_queue_size
+ self.__ws_is_shut_down = threading.Event()
+ self.__ws_serving = False
+
+ socketserver.BaseServer.__init__(self,
+ (options.server_host, options.port),
+ WebSocketRequestHandler)
+
+ # Expose the options object to allow handler objects access it. We name
+ # it with websocket_ prefix to avoid conflict.
+ self.websocket_server_options = options
+
+ self._create_sockets()
+ self.server_bind()
+ self.server_activate()
+
+ def _create_sockets(self):
+ self.server_name, self.server_port = self.server_address
+ self._sockets = []
+ if not self.server_name:
+ # On platforms that doesn't support IPv6, the first bind fails.
+ # On platforms that supports IPv6
+ # - If it binds both IPv4 and IPv6 on call with AF_INET6, the
+ # first bind succeeds and the second fails (we'll see 'Address
+ # already in use' error).
+ # - If it binds only IPv6 on call with AF_INET6, both call are
+ # expected to succeed to listen both protocol.
+ addrinfo_array = [(socket.AF_INET6, socket.SOCK_STREAM, '', '',
+ ''),
+ (socket.AF_INET, socket.SOCK_STREAM, '', '', '')]
+ else:
+ addrinfo_array = socket.getaddrinfo(self.server_name,
+ self.server_port,
+ socket.AF_UNSPEC,
+ socket.SOCK_STREAM,
+ socket.IPPROTO_TCP)
+ for addrinfo in addrinfo_array:
+ self._logger.info('Create socket on: %r', addrinfo)
+ family, socktype, proto, canonname, sockaddr = addrinfo
+ try:
+ socket_ = socket.socket(family, socktype)
+ except Exception as e:
+ self._logger.info('Skip by failure: %r', e)
+ continue
+ server_options = self.websocket_server_options
+ if server_options.use_tls:
+ if server_options.tls_client_auth:
+ if server_options.tls_client_cert_optional:
+ client_cert_ = ssl.CERT_OPTIONAL
+ else:
+ client_cert_ = ssl.CERT_REQUIRED
+ else:
+ client_cert_ = ssl.CERT_NONE
+ socket_ = ssl.wrap_socket(
+ socket_,
+ keyfile=server_options.private_key,
+ certfile=server_options.certificate,
+ ca_certs=server_options.tls_client_ca,
+ cert_reqs=client_cert_)
+ self._sockets.append((socket_, addrinfo))
+
+ def server_bind(self):
+ """Override SocketServer.TCPServer.server_bind to enable multiple
+ sockets bind.
+ """
+
+ failed_sockets = []
+
+ for socketinfo in self._sockets:
+ socket_, addrinfo = socketinfo
+ self._logger.info('Bind on: %r', addrinfo)
+ if self.allow_reuse_address:
+ socket_.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+ try:
+ socket_.bind(self.server_address)
+ except Exception as e:
+ self._logger.info('Skip by failure: %r', e)
+ socket_.close()
+ failed_sockets.append(socketinfo)
+ if self.server_address[1] == 0:
+ # The operating system assigns the actual port number for port
+ # number 0. This case, the second and later sockets should use
+ # the same port number. Also self.server_port is rewritten
+ # because it is exported, and will be used by external code.
+ self.server_address = (self.server_name,
+ socket_.getsockname()[1])
+ self.server_port = self.server_address[1]
+ self._logger.info('Port %r is assigned', self.server_port)
+
+ for socketinfo in failed_sockets:
+ self._sockets.remove(socketinfo)
+
+ def server_activate(self):
+ """Override SocketServer.TCPServer.server_activate to enable multiple
+ sockets listen.
+ """
+
+ failed_sockets = []
+
+ for socketinfo in self._sockets:
+ socket_, addrinfo = socketinfo
+ self._logger.info('Listen on: %r', addrinfo)
+ try:
+ socket_.listen(self.request_queue_size)
+ except Exception as e:
+ self._logger.info('Skip by failure: %r', e)
+ socket_.close()
+ failed_sockets.append(socketinfo)
+
+ for socketinfo in failed_sockets:
+ self._sockets.remove(socketinfo)
+
+ if len(self._sockets) == 0:
+ self._logger.critical(
+ 'No sockets activated. Use info log level to see the reason.')
+
+ def server_close(self):
+ """Override SocketServer.TCPServer.server_close to enable multiple
+ sockets close.
+ """
+
+ for socketinfo in self._sockets:
+ socket_, addrinfo = socketinfo
+ self._logger.info('Close on: %r', addrinfo)
+ socket_.close()
+
+ def fileno(self):
+ """Override SocketServer.TCPServer.fileno."""
+
+ self._logger.critical('Not supported: fileno')
+ return self._sockets[0][0].fileno()
+
+ def handle_error(self, request, client_address):
+ """Override SocketServer.handle_error."""
+
+ self._logger.error('Exception in processing request from: %r\n%s',
+ client_address, traceback.format_exc())
+ # Note: client_address is a tuple.
+
+ def get_request(self):
+ """Override TCPServer.get_request."""
+
+ accepted_socket, client_address = self.socket.accept()
+
+ server_options = self.websocket_server_options
+ if server_options.use_tls:
+ # Print cipher in use. Handshake is done on accept.
+ self._logger.debug('Cipher: %s', accepted_socket.cipher())
+ self._logger.debug('Client cert: %r',
+ accepted_socket.getpeercert())
+
+ return accepted_socket, client_address
+
+ def serve_forever(self, poll_interval=0.5):
+ """Override SocketServer.BaseServer.serve_forever."""
+
+ self.__ws_serving = True
+ self.__ws_is_shut_down.clear()
+ handle_request = self.handle_request
+ if hasattr(self, '_handle_request_noblock'):
+ handle_request = self._handle_request_noblock
+ else:
+ self._logger.warning('Fallback to blocking request handler')
+ try:
+ while self.__ws_serving:
+ r, w, e = select.select(
+ [socket_[0] for socket_ in self._sockets], [], [],
+ poll_interval)
+ for socket_ in r:
+ self.socket = socket_
+ handle_request()
+ self.socket = None
+ finally:
+ self.__ws_is_shut_down.set()
+
+ def shutdown(self):
+ """Override SocketServer.BaseServer.shutdown."""
+
+ self.__ws_serving = False
+ self.__ws_is_shut_down.wait()
+
+
+# vi:sts=4 sw=4 et