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vcs.py
156 lines | 5.1 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2010-2016 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import gzip
import shutil
import logging
import tempfile
import urlparse
import rhodecode
from rhodecode.lib.middleware.appenlight import wrap_in_appenlight_if_enabled
from rhodecode.lib.middleware.simplegit import SimpleGit, GIT_PROTO_PAT
from rhodecode.lib.middleware.simplehg import SimpleHg
from rhodecode.lib.middleware.simplesvn import SimpleSvn
log = logging.getLogger(__name__)
def is_git(environ):
"""
Returns True if requests should be handled by GIT wsgi middleware
"""
is_git_path = GIT_PROTO_PAT.match(environ['PATH_INFO'])
log.debug(
'request path: `%s` detected as GIT PROTOCOL %s', environ['PATH_INFO'],
is_git_path is not None)
return is_git_path
def is_hg(environ):
"""
Returns True if requests target is mercurial server - header
``HTTP_ACCEPT`` of such request would start with ``application/mercurial``.
"""
is_hg_path = False
http_accept = environ.get('HTTP_ACCEPT')
if http_accept and http_accept.startswith('application/mercurial'):
query = urlparse.parse_qs(environ['QUERY_STRING'])
if 'cmd' in query:
is_hg_path = True
log.debug(
'request path: `%s` detected as HG PROTOCOL %s', environ['PATH_INFO'],
is_hg_path)
return is_hg_path
def is_svn(environ):
"""
Returns True if requests target is Subversion server
"""
http_dav = environ.get('HTTP_DAV', '')
is_svn_path = 'subversion' in http_dav
log.debug(
'request path: `%s` detected as SVN PROTOCOL %s', environ['PATH_INFO'],
is_svn_path)
return is_svn_path
class GunzipMiddleware(object):
"""
WSGI middleware that unzips gzip-encoded requests before
passing on to the underlying application.
"""
def __init__(self, application):
self.app = application
def __call__(self, environ, start_response):
accepts_encoding_header = environ.get('HTTP_CONTENT_ENCODING', b'')
if b'gzip' in accepts_encoding_header:
log.debug('gzip detected, now running gunzip wrapper')
wsgi_input = environ['wsgi.input']
if not hasattr(environ['wsgi.input'], 'seek'):
# The gzip implementation in the standard library of Python 2.x
# requires the '.seek()' and '.tell()' methods to be available
# on the input stream. Read the data into a temporary file to
# work around this limitation.
wsgi_input = tempfile.SpooledTemporaryFile(64 * 1024 * 1024)
shutil.copyfileobj(environ['wsgi.input'], wsgi_input)
wsgi_input.seek(0)
environ['wsgi.input'] = gzip.GzipFile(fileobj=wsgi_input, mode='r')
# since we "Ungzipped" the content we say now it's no longer gzip
# content encoding
del environ['HTTP_CONTENT_ENCODING']
# content length has changes ? or i'm not sure
if 'CONTENT_LENGTH' in environ:
del environ['CONTENT_LENGTH']
else:
log.debug('content not gzipped, gzipMiddleware passing '
'request further')
return self.app(environ, start_response)
class VCSMiddleware(object):
def __init__(self, app, config, appenlight_client):
self.application = app
self.config = config
self.appenlight_client = appenlight_client
def _get_handler_app(self, environ):
app = None
if is_hg(environ):
app = SimpleHg(self.application, self.config)
if is_git(environ):
app = SimpleGit(self.application, self.config)
proxy_svn = rhodecode.CONFIG.get(
'rhodecode_proxy_subversion_http_requests', False)
if proxy_svn and is_svn(environ):
app = SimpleSvn(self.application, self.config)
if app:
app = GunzipMiddleware(app)
app, _ = wrap_in_appenlight_if_enabled(
app, self.config, self.appenlight_client)
return app
def __call__(self, environ, start_response):
# check if we handle one of interesting protocols ?
vcs_handler = self._get_handler_app(environ)
if vcs_handler:
return vcs_handler(environ, start_response)
return self.application(environ, start_response)