mirror of
https://github.com/facebook/sapling.git
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5cabd60d62
Fixes HTTP protocol violation introduced in e4a5f5db7028. 'hg serve' would show a stacktrace when loading pages that not had been modified. There was test coverage for this, but the wrong response headers wasn't shown and thus not detected.
331 lines
12 KiB
Python
331 lines
12 KiB
Python
# hgweb/server.py - The standalone hg web server.
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#
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# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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import os, sys, errno, urllib, BaseHTTPServer, socket, SocketServer, traceback
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from mercurial import util, error
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from mercurial.hgweb import common
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from mercurial.i18n import _
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def _splitURI(uri):
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"""Return path and query that has been split from uri
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Just like CGI environment, the path is unquoted, the query is
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not.
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"""
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if '?' in uri:
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path, query = uri.split('?', 1)
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else:
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path, query = uri, ''
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return urllib.unquote(path), query
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class _error_logger(object):
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def __init__(self, handler):
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self.handler = handler
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def flush(self):
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pass
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def write(self, str):
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self.writelines(str.split('\n'))
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def writelines(self, seq):
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for msg in seq:
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self.handler.log_error("HG error: %s", msg)
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class _httprequesthandler(BaseHTTPServer.BaseHTTPRequestHandler):
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url_scheme = 'http'
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@staticmethod
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def preparehttpserver(httpserver, ssl_cert):
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"""Prepare .socket of new HTTPServer instance"""
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pass
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def __init__(self, *args, **kargs):
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self.protocol_version = 'HTTP/1.1'
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BaseHTTPServer.BaseHTTPRequestHandler.__init__(self, *args, **kargs)
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def _log_any(self, fp, format, *args):
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fp.write("%s - - [%s] %s\n" % (self.client_address[0],
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self.log_date_time_string(),
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format % args))
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fp.flush()
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def log_error(self, format, *args):
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self._log_any(self.server.errorlog, format, *args)
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def log_message(self, format, *args):
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self._log_any(self.server.accesslog, format, *args)
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def log_request(self, code='-', size='-'):
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xheaders = [h for h in self.headers.items() if h[0].startswith('x-')]
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self.log_message('"%s" %s %s%s',
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self.requestline, str(code), str(size),
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''.join([' %s:%s' % h for h in sorted(xheaders)]))
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def do_write(self):
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try:
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self.do_hgweb()
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except socket.error, inst:
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if inst[0] != errno.EPIPE:
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raise
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def do_POST(self):
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try:
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self.do_write()
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except Exception:
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self._start_response("500 Internal Server Error", [])
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self._write("Internal Server Error")
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tb = "".join(traceback.format_exception(*sys.exc_info()))
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self.log_error("Exception happened during processing "
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"request '%s':\n%s", self.path, tb)
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def do_GET(self):
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self.do_POST()
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def do_hgweb(self):
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path, query = _splitURI(self.path)
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env = {}
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env['GATEWAY_INTERFACE'] = 'CGI/1.1'
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env['REQUEST_METHOD'] = self.command
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env['SERVER_NAME'] = self.server.server_name
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env['SERVER_PORT'] = str(self.server.server_port)
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env['REQUEST_URI'] = self.path
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env['SCRIPT_NAME'] = self.server.prefix
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env['PATH_INFO'] = path[len(self.server.prefix):]
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env['REMOTE_HOST'] = self.client_address[0]
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env['REMOTE_ADDR'] = self.client_address[0]
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if query:
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env['QUERY_STRING'] = query
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if self.headers.typeheader is None:
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env['CONTENT_TYPE'] = self.headers.type
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else:
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env['CONTENT_TYPE'] = self.headers.typeheader
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length = self.headers.getheader('content-length')
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if length:
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env['CONTENT_LENGTH'] = length
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for header in [h for h in self.headers.keys()
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if h not in ('content-type', 'content-length')]:
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hkey = 'HTTP_' + header.replace('-', '_').upper()
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hval = self.headers.getheader(header)
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hval = hval.replace('\n', '').strip()
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if hval:
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env[hkey] = hval
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env['SERVER_PROTOCOL'] = self.request_version
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env['wsgi.version'] = (1, 0)
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env['wsgi.url_scheme'] = self.url_scheme
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if env.get('HTTP_EXPECT', '').lower() == '100-continue':
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self.rfile = common.continuereader(self.rfile, self.wfile.write)
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env['wsgi.input'] = self.rfile
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env['wsgi.errors'] = _error_logger(self)
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env['wsgi.multithread'] = isinstance(self.server,
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SocketServer.ThreadingMixIn)
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env['wsgi.multiprocess'] = isinstance(self.server,
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SocketServer.ForkingMixIn)
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env['wsgi.run_once'] = 0
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self.saved_status = None
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self.saved_headers = []
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self.sent_headers = False
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self.length = None
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self._chunked = None
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for chunk in self.server.application(env, self._start_response):
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self._write(chunk)
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if not self.sent_headers:
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self.send_headers()
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self._done()
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def send_headers(self):
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if not self.saved_status:
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raise AssertionError("Sending headers before "
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"start_response() called")
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saved_status = self.saved_status.split(None, 1)
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saved_status[0] = int(saved_status[0])
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self.send_response(*saved_status)
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self.length = None
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self._chunked = False
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for h in self.saved_headers:
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self.send_header(*h)
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if h[0].lower() == 'content-length':
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self.length = int(h[1])
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if (self.length is None and
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saved_status[0] != common.HTTP_NOT_MODIFIED):
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self._chunked = (not self.close_connection and
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self.request_version == "HTTP/1.1")
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if self._chunked:
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self.send_header('Transfer-Encoding', 'chunked')
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else:
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self.send_header('Connection', 'close')
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self.end_headers()
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self.sent_headers = True
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def _start_response(self, http_status, headers, exc_info=None):
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code, msg = http_status.split(None, 1)
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code = int(code)
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self.saved_status = http_status
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bad_headers = ('connection', 'transfer-encoding')
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self.saved_headers = [h for h in headers
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if h[0].lower() not in bad_headers]
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return self._write
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def _write(self, data):
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if not self.saved_status:
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raise AssertionError("data written before start_response() called")
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elif not self.sent_headers:
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self.send_headers()
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if self.length is not None:
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if len(data) > self.length:
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raise AssertionError("Content-length header sent, but more "
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"bytes than specified are being written.")
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self.length = self.length - len(data)
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elif self._chunked and data:
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data = '%x\r\n%s\r\n' % (len(data), data)
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self.wfile.write(data)
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self.wfile.flush()
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def _done(self):
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if self._chunked:
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self.wfile.write('0\r\n\r\n')
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self.wfile.flush()
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class _httprequesthandleropenssl(_httprequesthandler):
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"""HTTPS handler based on pyOpenSSL"""
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url_scheme = 'https'
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@staticmethod
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def preparehttpserver(httpserver, ssl_cert):
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try:
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import OpenSSL
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OpenSSL.SSL.Context
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except ImportError:
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raise util.Abort(_("SSL support is unavailable"))
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ctx = OpenSSL.SSL.Context(OpenSSL.SSL.SSLv23_METHOD)
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ctx.use_privatekey_file(ssl_cert)
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ctx.use_certificate_file(ssl_cert)
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sock = socket.socket(httpserver.address_family, httpserver.socket_type)
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httpserver.socket = OpenSSL.SSL.Connection(ctx, sock)
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httpserver.server_bind()
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httpserver.server_activate()
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def setup(self):
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self.connection = self.request
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self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
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self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)
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def do_write(self):
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import OpenSSL
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try:
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_httprequesthandler.do_write(self)
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except OpenSSL.SSL.SysCallError, inst:
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if inst.args[0] != errno.EPIPE:
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raise
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def handle_one_request(self):
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import OpenSSL
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try:
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_httprequesthandler.handle_one_request(self)
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except (OpenSSL.SSL.SysCallError, OpenSSL.SSL.ZeroReturnError):
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self.close_connection = True
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pass
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class _httprequesthandlerssl(_httprequesthandler):
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"""HTTPS handler based on Pythons ssl module (introduced in 2.6)"""
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url_scheme = 'https'
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@staticmethod
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def preparehttpserver(httpserver, ssl_cert):
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try:
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import ssl
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ssl.wrap_socket
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except ImportError:
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raise util.Abort(_("SSL support is unavailable"))
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httpserver.socket = ssl.wrap_socket(httpserver.socket, server_side=True,
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certfile=ssl_cert, ssl_version=ssl.PROTOCOL_SSLv23)
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def setup(self):
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self.connection = self.request
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self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
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self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)
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try:
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from threading import activeCount
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activeCount() # silence pyflakes
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_mixin = SocketServer.ThreadingMixIn
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except ImportError:
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if util.safehasattr(os, "fork"):
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_mixin = SocketServer.ForkingMixIn
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else:
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class _mixin(object):
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pass
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def openlog(opt, default):
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if opt and opt != '-':
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return open(opt, 'a')
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return default
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class MercurialHTTPServer(object, _mixin, BaseHTTPServer.HTTPServer):
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# SO_REUSEADDR has broken semantics on windows
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if os.name == 'nt':
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allow_reuse_address = 0
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def __init__(self, ui, app, addr, handler, **kwargs):
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BaseHTTPServer.HTTPServer.__init__(self, addr, handler, **kwargs)
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self.daemon_threads = True
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self.application = app
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handler.preparehttpserver(self, ui.config('web', 'certificate'))
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prefix = ui.config('web', 'prefix', '')
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if prefix:
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prefix = '/' + prefix.strip('/')
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self.prefix = prefix
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alog = openlog(ui.config('web', 'accesslog', '-'), sys.stdout)
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elog = openlog(ui.config('web', 'errorlog', '-'), sys.stderr)
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self.accesslog = alog
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self.errorlog = elog
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self.addr, self.port = self.socket.getsockname()[0:2]
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self.fqaddr = socket.getfqdn(addr[0])
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class IPv6HTTPServer(MercurialHTTPServer):
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address_family = getattr(socket, 'AF_INET6', None)
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def __init__(self, *args, **kwargs):
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if self.address_family is None:
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raise error.RepoError(_('IPv6 is not available on this system'))
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super(IPv6HTTPServer, self).__init__(*args, **kwargs)
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def create_server(ui, app):
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if ui.config('web', 'certificate'):
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if sys.version_info >= (2, 6):
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handler = _httprequesthandlerssl
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else:
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handler = _httprequesthandleropenssl
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else:
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handler = _httprequesthandler
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if ui.configbool('web', 'ipv6'):
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cls = IPv6HTTPServer
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else:
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cls = MercurialHTTPServer
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# ugly hack due to python issue5853 (for threaded use)
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import mimetypes; mimetypes.init()
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address = ui.config('web', 'address', '')
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port = util.getport(ui.config('web', 'port', 8000))
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try:
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return cls(ui, app, (address, port), handler)
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except socket.error, inst:
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raise util.Abort(_("cannot start server at '%s:%d': %s")
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% (address, port, inst.args[1]))
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