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# hgweb/server.py - The standalone hg web server.
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import os, sys, errno, urllib, BaseHTTPServer, socket, SocketServer, traceback
from mercurial import ui, hg, util, templater
from hgweb_mod import hgweb
from hgwebdir_mod import hgwebdir
from request import wsgiapplication
from mercurial.i18n import gettext as _
def _splitURI(uri):
""" Return path and query splited from uri
Just like CGI environment, the path is unquoted, the query is
not.
"""
if '?' in uri:
path, query = uri.split('?', 1)
else:
path, query = uri, ''
return urllib.unquote(path), query
class _error_logger(object):
def __init__(self, handler):
self.handler = handler
def flush(self):
pass
def write(self, str):
self.writelines(str.split('\n'))
def writelines(self, seq):
for msg in seq:
self.handler.log_error("HG error: %s", msg)
class _hgwebhandler(object, BaseHTTPServer.BaseHTTPRequestHandler):
url_scheme = 'http'
def __init__(self, *args, **kargs):
self.protocol_version = 'HTTP/1.1'
BaseHTTPServer.BaseHTTPRequestHandler.__init__(self, *args, **kargs)
def log_error(self, format, *args):
errorlog = self.server.errorlog
errorlog.write("%s - - [%s] %s\n" % (self.client_address[0],
self.log_date_time_string(),
format % args))
def log_message(self, format, *args):
accesslog = self.server.accesslog
accesslog.write("%s - - [%s] %s\n" % (self.client_address[0],
self.log_date_time_string(),
format % args))
def do_write(self):
try:
self.do_hgweb()
except socket.error, inst:
if inst[0] != errno.EPIPE:
raise
def do_POST(self):
try:
self.do_write()
except StandardError, inst:
self._start_response("500 Internal Server Error", [])
self._write("Internal Server Error")
tb = "".join(traceback.format_exception(*sys.exc_info()))
self.log_error("Exception happened during processing request '%s':\n%s",
self.path, tb)
def do_GET(self):
self.do_POST()
def do_hgweb(self):
path_info, query = _splitURI(self.path)
env = {}
env['GATEWAY_INTERFACE'] = 'CGI/1.1'
env['REQUEST_METHOD'] = self.command
env['SERVER_NAME'] = self.server.server_name
env['SERVER_PORT'] = str(self.server.server_port)
env['REQUEST_URI'] = self.path
env['PATH_INFO'] = path_info
env['REMOTE_HOST'] = self.client_address[0]
env['REMOTE_ADDR'] = self.client_address[0]
if query:
env['QUERY_STRING'] = query
if self.headers.typeheader is None:
env['CONTENT_TYPE'] = self.headers.type
else:
env['CONTENT_TYPE'] = self.headers.typeheader
length = self.headers.getheader('content-length')
if length:
env['CONTENT_LENGTH'] = length
for header in [h for h in self.headers.keys()
if h not in ('content-type', 'content-length')]:
hkey = 'HTTP_' + header.replace('-', '_').upper()
hval = self.headers.getheader(header)
hval = hval.replace('\n', '').strip()
if hval:
env[hkey] = hval
env['SERVER_PROTOCOL'] = self.request_version
env['wsgi.version'] = (1, 0)
env['wsgi.url_scheme'] = self.url_scheme
env['wsgi.input'] = self.rfile
env['wsgi.errors'] = _error_logger(self)
env['wsgi.multithread'] = isinstance(self.server,
SocketServer.ThreadingMixIn)
env['wsgi.multiprocess'] = isinstance(self.server,
SocketServer.ForkingMixIn)
env['wsgi.run_once'] = 0
self.close_connection = True
self.saved_status = None
self.saved_headers = []
self.sent_headers = False
self.length = None
req = self.server.reqmaker(env, self._start_response)
for data in req:
if data:
self._write(data)
def send_headers(self):
if not self.saved_status:
raise AssertionError("Sending headers before start_response() called")
saved_status = self.saved_status.split(None, 1)
saved_status[0] = int(saved_status[0])
self.send_response(*saved_status)
should_close = True
for h in self.saved_headers:
self.send_header(*h)
if h[0].lower() == 'content-length':
should_close = False
self.length = int(h[1])
# The value of the Connection header is a list of case-insensitive
# tokens separated by commas and optional whitespace.
if 'close' in [token.strip().lower() for token in
self.headers.get('connection', '').split(',')]:
should_close = True
if should_close:
self.send_header('Connection', 'close')
self.close_connection = should_close
self.end_headers()
self.sent_headers = True
def _start_response(self, http_status, headers, exc_info=None):
code, msg = http_status.split(None, 1)
code = int(code)
self.saved_status = http_status
bad_headers = ('connection', 'transfer-encoding')
self.saved_headers = [h for h in headers
if h[0].lower() not in bad_headers]
return self._write
def _write(self, data):
if not self.saved_status:
raise AssertionError("data written before start_response() called")
elif not self.sent_headers:
self.send_headers()
if self.length is not None:
if len(data) > self.length:
raise AssertionError("Content-length header sent, but more bytes than specified are being written.")
self.length = self.length - len(data)
self.wfile.write(data)
self.wfile.flush()
class _shgwebhandler(_hgwebhandler):
url_scheme = 'https'
def setup(self):
self.connection = self.request
self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)
def do_write(self):
from OpenSSL.SSL import SysCallError
try:
super(_shgwebhandler, self).do_write()
except SysCallError, inst:
if inst.args[0] != errno.EPIPE:
raise
def handle_one_request(self):
from OpenSSL.SSL import SysCallError, ZeroReturnError
try:
super(_shgwebhandler, self).handle_one_request()
except (SysCallError, ZeroReturnError):
self.close_connection = True
pass
def create_server(ui, repo):
use_threads = True
def openlog(opt, default):
if opt and opt != '-':
return open(opt, 'w')
return default
if repo is None:
myui = ui
else:
myui = repo.ui
address = myui.config("web", "address", "")
port = int(myui.config("web", "port", 8000))
use_ipv6 = myui.configbool("web", "ipv6")
webdir_conf = myui.config("web", "webdir_conf")
ssl_cert = myui.config("web", "certificate")
accesslog = openlog(myui.config("web", "accesslog", "-"), sys.stdout)
errorlog = openlog(myui.config("web", "errorlog", "-"), sys.stderr)
if use_threads:
try:
from threading import activeCount
except ImportError:
use_threads = False
if use_threads:
_mixin = SocketServer.ThreadingMixIn
else:
if hasattr(os, "fork"):
_mixin = SocketServer.ForkingMixIn
else:
class _mixin:
pass
class MercurialHTTPServer(object, _mixin, BaseHTTPServer.HTTPServer):
# SO_REUSEADDR has broken semantics on windows
if os.name == 'nt':
allow_reuse_address = 0
def __init__(self, *args, **kargs):
BaseHTTPServer.HTTPServer.__init__(self, *args, **kargs)
self.accesslog = accesslog
self.errorlog = errorlog
self.daemon_threads = True
def make_handler():
if webdir_conf:
hgwebobj = hgwebdir(webdir_conf, ui)
elif repo is not None:
hgwebobj = hgweb(hg.repository(repo.ui, repo.root))
else:
raise hg.RepoError(_("There is no Mercurial repository here"
" (.hg not found)"))
return hgwebobj
self.reqmaker = wsgiapplication(make_handler)
addr = address
if addr in ('', '::'):
addr = socket.gethostname()
self.addr, self.port = addr, port
if ssl_cert:
try:
from OpenSSL import SSL
ctx = SSL.Context(SSL.SSLv23_METHOD)
except ImportError:
raise util.Abort("SSL support is unavailable")
ctx.use_privatekey_file(ssl_cert)
ctx.use_certificate_file(ssl_cert)
sock = socket.socket(self.address_family, self.socket_type)
self.socket = SSL.Connection(ctx, sock)
self.server_bind()
self.server_activate()
class IPv6HTTPServer(MercurialHTTPServer):
address_family = getattr(socket, 'AF_INET6', None)
def __init__(self, *args, **kwargs):
if self.address_family is None:
raise hg.RepoError(_('IPv6 not available on this system'))
super(IPv6HTTPServer, self).__init__(*args, **kwargs)
if ssl_cert:
handler = _shgwebhandler
else:
handler = _hgwebhandler
try:
if use_ipv6:
return IPv6HTTPServer((address, port), handler)
else:
return MercurialHTTPServer((address, port), handler)
except socket.error, inst:
raise util.Abort(_('cannot start server: %s') % inst.args[1])
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