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# 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 = []
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if util.safehasattr(self, 'headers'):
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xheaders = [h for h in self.headers.items()
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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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try:
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import mimetypes
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mimetypes.init()
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except UnicodeDecodeError:
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# Python 2.x's mimetypes module attempts to decode strings
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# from Windows' ANSI APIs as ascii (fail), then re-encode them
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# as ascii (clown fail), because the default Python Unicode
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# codec is hardcoded as ascii.
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sys.argv # unwrap demand-loader so that reload() works
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reload(sys) # resurrect sys.setdefaultencoding()
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oldenc = sys.getdefaultencoding()
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sys.setdefaultencoding("latin1") # or any full 8-bit encoding
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mimetypes.init()
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sys.setdefaultencoding(oldenc)
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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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