mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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473 lines
18 KiB
Python
473 lines
18 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2009, Google Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Standalone Web Socket server.
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Use this server to run mod_pywebsocket without Apache HTTP Server.
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Usage:
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python standalone.py [-p <ws_port>] [-w <websock_handlers>]
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[-s <scan_dir>]
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[-d <document_root>]
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[-m <websock_handlers_map_file>]
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... for other options, see _main below ...
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<ws_port> is the port number to use for ws:// connection.
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<document_root> is the path to the root directory of HTML files.
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<websock_handlers> is the path to the root directory of Web Socket handlers.
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See __init__.py for details of <websock_handlers> and how to write Web Socket
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handlers. If this path is relative, <document_root> is used as the base.
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<scan_dir> is a path under the root directory. If specified, only the handlers
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under scan_dir are scanned. This is useful in saving scan time.
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Note:
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This server is derived from SocketServer.ThreadingMixIn. Hence a thread is
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used for each request.
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SECURITY WARNING: This uses CGIHTTPServer and CGIHTTPServer is not secure.
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It may execute arbitrary Python code or external programs. It should not be
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used outside a firewall.
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"""
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import BaseHTTPServer
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import CGIHTTPServer
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import SimpleHTTPServer
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import SocketServer
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import logging
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import logging.handlers
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import optparse
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import os
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import re
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import socket
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import sys
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_HAS_OPEN_SSL = False
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try:
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import OpenSSL.SSL
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_HAS_OPEN_SSL = True
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except ImportError:
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pass
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from mod_pywebsocket import dispatch
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from mod_pywebsocket import handshake
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from mod_pywebsocket import memorizingfile
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from mod_pywebsocket import util
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_LOG_LEVELS = {
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'debug': logging.DEBUG,
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'info': logging.INFO,
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'warn': logging.WARN,
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'error': logging.ERROR,
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'critical': logging.CRITICAL};
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_DEFAULT_LOG_MAX_BYTES = 1024 * 256
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_DEFAULT_LOG_BACKUP_COUNT = 5
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_DEFAULT_REQUEST_QUEUE_SIZE = 128
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# 1024 is practically large enough to contain WebSocket handshake lines.
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_MAX_MEMORIZED_LINES = 1024
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def _print_warnings_if_any(dispatcher):
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warnings = dispatcher.source_warnings()
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if warnings:
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for warning in warnings:
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logging.warning('mod_pywebsocket: %s' % warning)
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class _StandaloneConnection(object):
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"""Mimic mod_python mp_conn."""
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def __init__(self, request_handler):
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"""Construct an instance.
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Args:
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request_handler: A WebSocketRequestHandler instance.
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"""
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self._request_handler = request_handler
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def get_local_addr(self):
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"""Getter to mimic mp_conn.local_addr."""
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return (self._request_handler.server.server_name,
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self._request_handler.server.server_port)
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local_addr = property(get_local_addr)
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def get_remote_addr(self):
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"""Getter to mimic mp_conn.remote_addr.
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Setting the property in __init__ won't work because the request
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handler is not initialized yet there."""
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return self._request_handler.client_address
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remote_addr = property(get_remote_addr)
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def write(self, data):
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"""Mimic mp_conn.write()."""
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return self._request_handler.wfile.write(data)
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def read(self, length):
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"""Mimic mp_conn.read()."""
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return self._request_handler.rfile.read(length)
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def get_memorized_lines(self):
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"""Get memorized lines."""
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return self._request_handler.rfile.get_memorized_lines()
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class _StandaloneRequest(object):
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"""Mimic mod_python request."""
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def __init__(self, request_handler, use_tls):
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"""Construct an instance.
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Args:
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request_handler: A WebSocketRequestHandler instance.
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"""
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self._request_handler = request_handler
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self.connection = _StandaloneConnection(request_handler)
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self._use_tls = use_tls
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def get_uri(self):
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"""Getter to mimic request.uri."""
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return self._request_handler.path
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uri = property(get_uri)
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def get_method(self):
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"""Getter to mimic request.method."""
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return self._request_handler.command
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method = property(get_method)
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def get_headers_in(self):
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"""Getter to mimic request.headers_in."""
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return self._request_handler.headers
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headers_in = property(get_headers_in)
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def is_https(self):
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"""Mimic request.is_https()."""
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return self._use_tls
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class WebSocketServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
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"""HTTPServer specialized for Web Socket."""
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SocketServer.ThreadingMixIn.daemon_threads = True
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def __init__(self, server_address, RequestHandlerClass):
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"""Override SocketServer.BaseServer.__init__."""
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SocketServer.BaseServer.__init__(
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self, server_address, RequestHandlerClass)
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self.socket = self._create_socket()
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self.server_bind()
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self.server_activate()
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def _create_socket(self):
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socket_ = socket.socket(self.address_family, self.socket_type)
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if WebSocketServer.options.use_tls:
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ctx = OpenSSL.SSL.Context(OpenSSL.SSL.SSLv23_METHOD)
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ctx.use_privatekey_file(WebSocketServer.options.private_key)
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ctx.use_certificate_file(WebSocketServer.options.certificate)
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socket_ = OpenSSL.SSL.Connection(ctx, socket_)
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return socket_
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def handle_error(self, rquest, client_address):
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"""Override SocketServer.handle_error."""
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logging.error(
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('Exception in processing request from: %r' % (client_address,)) +
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'\n' + util.get_stack_trace())
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# Note: client_address is a tuple. To match it against %r, we need the
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# trailing comma.
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class WebSocketRequestHandler(CGIHTTPServer.CGIHTTPRequestHandler):
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"""CGIHTTPRequestHandler specialized for Web Socket."""
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def setup(self):
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"""Override SocketServer.StreamRequestHandler.setup."""
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self.connection = self.request
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self.rfile = memorizingfile.MemorizingFile(
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socket._fileobject(self.request, 'rb', self.rbufsize),
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max_memorized_lines=_MAX_MEMORIZED_LINES)
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self.wfile = socket._fileobject(self.request, 'wb', self.wbufsize)
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def __init__(self, *args, **keywords):
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self._request = _StandaloneRequest(
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self, WebSocketRequestHandler.options.use_tls)
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self._dispatcher = WebSocketRequestHandler.options.dispatcher
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self._print_warnings_if_any()
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self._handshaker = handshake.Handshaker(
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self._request, self._dispatcher,
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allowDraft75=WebSocketRequestHandler.options.allow_draft75,
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strict=WebSocketRequestHandler.options.strict)
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CGIHTTPServer.CGIHTTPRequestHandler.__init__(
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self, *args, **keywords)
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def _print_warnings_if_any(self):
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warnings = self._dispatcher.source_warnings()
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if warnings:
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for warning in warnings:
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logging.warning('mod_pywebsocket: %s' % warning)
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def parse_request(self):
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"""Override BaseHTTPServer.BaseHTTPRequestHandler.parse_request.
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Return True to continue processing for HTTP(S), False otherwise.
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"""
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result = CGIHTTPServer.CGIHTTPRequestHandler.parse_request(self)
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if result:
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try:
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self._handshaker.do_handshake()
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try:
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self._dispatcher.transfer_data(self._request)
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except Exception, e:
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# Catch exception in transfer_data.
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# In this case, handshake has been successful, so just log
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# the exception and return False.
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logging.info('mod_pywebsocket: %s' % e)
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return False
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except handshake.HandshakeError, e:
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# Handshake for ws(s) failed. Assume http(s).
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logging.info('mod_pywebsocket: %s' % e)
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return True
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except dispatch.DispatchError, e:
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logging.warning('mod_pywebsocket: %s' % e)
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return False
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except Exception, e:
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logging.warning('mod_pywebsocket: %s' % e)
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logging.info('mod_pywebsocket: %s' % util.get_stack_trace())
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return False
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return result
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def log_request(self, code='-', size='-'):
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"""Override BaseHTTPServer.log_request."""
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logging.info('"%s" %s %s',
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self.requestline, str(code), str(size))
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def log_error(self, *args):
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"""Override BaseHTTPServer.log_error."""
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# Despite the name, this method is for warnings than for errors.
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# For example, HTTP status code is logged by this method.
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logging.warn('%s - %s' % (self.address_string(), (args[0] % args[1:])))
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def is_cgi(self):
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"""Test whether self.path corresponds to a CGI script.
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Add extra check that self.path doesn't contains ..
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Also check if the file is a executable file or not.
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If the file is not executable, it is handled as static file or dir
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rather than a CGI script.
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"""
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if CGIHTTPServer.CGIHTTPRequestHandler.is_cgi(self):
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if '..' in self.path:
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return False
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# strip query parameter from request path
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resource_name = self.path.split('?', 2)[0]
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# convert resource_name into real path name in filesystem.
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scriptfile = self.translate_path(resource_name)
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if not os.path.isfile(scriptfile):
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return False
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if not self.is_executable(scriptfile):
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return False
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return True
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return False
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def _configure_logging(options):
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logger = logging.getLogger()
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logger.setLevel(_LOG_LEVELS[options.log_level])
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if options.log_file:
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handler = logging.handlers.RotatingFileHandler(
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options.log_file, 'a', options.log_max, options.log_count)
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else:
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handler = logging.StreamHandler()
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formatter = logging.Formatter(
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"[%(asctime)s] [%(levelname)s] %(name)s: %(message)s")
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handler.setFormatter(formatter)
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logger.addHandler(handler)
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def _alias_handlers(dispatcher, websock_handlers_map_file):
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"""Set aliases specified in websock_handler_map_file in dispatcher.
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Args:
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dispatcher: dispatch.Dispatcher instance
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websock_handler_map_file: alias map file
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"""
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fp = open(websock_handlers_map_file)
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try:
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for line in fp:
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if line[0] == '#' or line.isspace():
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continue
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m = re.match('(\S+)\s+(\S+)', line)
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if not m:
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logging.warning('Wrong format in map file:' + line)
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continue
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try:
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dispatcher.add_resource_path_alias(
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m.group(1), m.group(2))
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except dispatch.DispatchError, e:
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logging.error(str(e))
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finally:
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fp.close()
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def _main():
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parser = optparse.OptionParser()
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parser.add_option('-H', '--server-host', '--server_host',
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dest='server_host',
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default='',
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help='server hostname to listen to')
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parser.add_option('-p', '--port', dest='port', type='int',
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default=handshake.DEFAULT_WEB_SOCKET_PORT,
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help='port to listen to')
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parser.add_option('-w', '--websock-handlers', '--websock_handlers',
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dest='websock_handlers',
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default='.',
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help='Web Socket handlers root directory.')
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parser.add_option('-m', '--websock-handlers-map-file',
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'--websock_handlers_map_file',
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dest='websock_handlers_map_file',
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default=None,
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help=('Web Socket handlers map file. '
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'Each line consists of alias_resource_path and '
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'existing_resource_path, separated by spaces.'))
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parser.add_option('-s', '--scan-dir', '--scan_dir', dest='scan_dir',
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default=None,
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help=('Web Socket handlers scan directory. '
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'Must be a directory under websock_handlers.'))
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parser.add_option('-d', '--document-root', '--document_root',
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dest='document_root', default='.',
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help='Document root directory.')
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parser.add_option('-x', '--cgi-paths', '--cgi_paths', dest='cgi_paths',
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default=None,
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help=('CGI paths relative to document_root.'
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'Comma-separated. (e.g -x /cgi,/htbin) '
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'Files under document_root/cgi_path are handled '
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'as CGI programs. Must be executable.'))
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parser.add_option('-t', '--tls', dest='use_tls', action='store_true',
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default=False, help='use TLS (wss://)')
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parser.add_option('-k', '--private-key', '--private_key',
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dest='private_key',
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default='', help='TLS private key file.')
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parser.add_option('-c', '--certificate', dest='certificate',
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default='', help='TLS certificate file.')
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parser.add_option('-l', '--log-file', '--log_file', dest='log_file',
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default='', help='Log file.')
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parser.add_option('--log-level', '--log_level', type='choice',
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dest='log_level', default='warn',
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choices=['debug', 'info', 'warn', 'error', 'critical'],
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help='Log level.')
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parser.add_option('--log-max', '--log_max', dest='log_max', type='int',
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default=_DEFAULT_LOG_MAX_BYTES,
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help='Log maximum bytes')
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parser.add_option('--log-count', '--log_count', dest='log_count',
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type='int', default=_DEFAULT_LOG_BACKUP_COUNT,
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help='Log backup count')
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parser.add_option('--allow-draft75', dest='allow_draft75',
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action='store_true', default=False,
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help='Allow draft 75 handshake')
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parser.add_option('--strict', dest='strict', action='store_true',
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default=False, help='Strictly check handshake request')
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parser.add_option('-q', '--queue', dest='request_queue_size', type='int',
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default=_DEFAULT_REQUEST_QUEUE_SIZE,
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help='request queue size')
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options = parser.parse_args()[0]
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os.chdir(options.document_root)
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_configure_logging(options)
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SocketServer.TCPServer.request_queue_size = options.request_queue_size
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CGIHTTPServer.CGIHTTPRequestHandler.cgi_directories = []
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if options.cgi_paths:
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CGIHTTPServer.CGIHTTPRequestHandler.cgi_directories = \
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options.cgi_paths.split(',')
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if sys.platform in ('cygwin', 'win32'):
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cygwin_path = None
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# For Win32 Python, it is expected that CYGWIN_PATH
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# is set to a directory of cygwin binaries.
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# For example, websocket_server.py in Chromium sets CYGWIN_PATH to
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# full path of third_party/cygwin/bin.
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if 'CYGWIN_PATH' in os.environ:
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cygwin_path = os.environ['CYGWIN_PATH']
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util.wrap_popen3_for_win(cygwin_path)
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def __check_script(scriptpath):
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return util.get_script_interp(scriptpath, cygwin_path)
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CGIHTTPServer.executable = __check_script
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if options.use_tls:
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if not _HAS_OPEN_SSL:
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logging.critical('To use TLS, install pyOpenSSL.')
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sys.exit(1)
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if not options.private_key or not options.certificate:
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logging.critical(
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'To use TLS, specify private_key and certificate.')
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sys.exit(1)
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if not options.scan_dir:
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options.scan_dir = options.websock_handlers
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try:
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# Share a Dispatcher among request handlers to save time for
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# instantiation. Dispatcher can be shared because it is thread-safe.
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options.dispatcher = dispatch.Dispatcher(options.websock_handlers,
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options.scan_dir)
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if options.websock_handlers_map_file:
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_alias_handlers(options.dispatcher,
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options.websock_handlers_map_file)
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_print_warnings_if_any(options.dispatcher)
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WebSocketRequestHandler.options = options
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WebSocketServer.options = options
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server = WebSocketServer((options.server_host, options.port),
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WebSocketRequestHandler)
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server.serve_forever()
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except Exception, e:
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logging.critical(str(e))
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sys.exit(1)
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if __name__ == '__main__':
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_main()
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# vi:sts=4 sw=4 et
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