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#!/usr/bin/env python
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# encoding: utf-8
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# middleware to handle git api calls
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# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2
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# of the License or (at your opinion) any later version of the license.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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"""
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Created on 2010-04-28
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@author: marcink
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SimpleGit middleware for handling git protocol request (push/clone etc.)
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It's implemented with basic auth function
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"""
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from dulwich import server as dulserver
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class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
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def handle(self):
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write = lambda x: self.proto.write_sideband(1, x)
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graph_walker = dulserver.ProtocolGraphWalker(self, self.repo.object_store,
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self.repo.get_peeled)
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objects_iter = self.repo.fetch_objects(
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graph_walker.determine_wants, graph_walker, self.progress,
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get_tagged=self.get_tagged)
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# Do they want any objects?
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if len(objects_iter) == 0:
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return
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self.progress("counting objects: %d, done.\n" % len(objects_iter))
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dulserver.write_pack_data(dulserver.ProtocolFile(None, write), objects_iter,
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len(objects_iter))
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messages = []
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messages.append('thank you for using rhodecode')
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for msg in messages:
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self.progress(msg + "\n")
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# we are done
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self.proto.write("0000")
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dulserver.DEFAULT_HANDLERS = {
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'git-upload-pack': SimpleGitUploadPackHandler,
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'git-receive-pack': dulserver.ReceivePackHandler,
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}
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from dulwich.repo import Repo
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from dulwich.web import HTTPGitApplication
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from paste.auth.basic import AuthBasicAuthenticator
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from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
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from rhodecode.lib.utils import is_git, invalidate_cache, check_repo_fast
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from rhodecode.model.user import UserModel
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from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
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import logging
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import os
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import traceback
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log = logging.getLogger(__name__)
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class SimpleGit(object):
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def __init__(self, application, config):
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self.application = application
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self.config = config
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#authenticate this git request using
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self.authenticate = AuthBasicAuthenticator('', authfunc)
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self.ipaddr = '0.0.0.0'
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self.repository = None
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self.username = None
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self.action = None
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def __call__(self, environ, start_response):
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if not is_git(environ):
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return self.application(environ, start_response)
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proxy_key = 'HTTP_X_REAL_IP'
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def_key = 'REMOTE_ADDR'
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self.ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
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#===================================================================
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# AUTHENTICATE THIS GIT REQUEST
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#===================================================================
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username = REMOTE_USER(environ)
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if not username:
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self.authenticate.realm = self.config['rhodecode_realm']
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result = self.authenticate(environ)
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if isinstance(result, str):
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AUTH_TYPE.update(environ, 'basic')
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REMOTE_USER.update(environ, result)
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else:
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return result.wsgi_application(environ, start_response)
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#=======================================================================
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# GET REPOSITORY
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#=======================================================================
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try:
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repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
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if repo_name.endswith('/'):
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repo_name = repo_name.rstrip('/')
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self.repository = repo_name
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except:
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log.error(traceback.format_exc())
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return HTTPInternalServerError()(environ, start_response)
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#===================================================================
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# CHECK PERMISSIONS FOR THIS REQUEST
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#===================================================================
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self.action = self.__get_action(environ)
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if self.action:
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username = self.__get_environ_user(environ)
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try:
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user = self.__get_user(username)
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self.username = user.username
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except:
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log.error(traceback.format_exc())
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return HTTPInternalServerError()(environ, start_response)
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#check permissions for this repository
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if self.action == 'push':
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if not HasPermissionAnyMiddleware('repository.write',
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'repository.admin')\
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(user, repo_name):
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return HTTPForbidden()(environ, start_response)
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else:
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#any other action need at least read permission
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if not HasPermissionAnyMiddleware('repository.read',
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'repository.write',
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'repository.admin')\
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(user, repo_name):
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return HTTPForbidden()(environ, start_response)
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self.extras = {'ip':self.ipaddr,
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'username':self.username,
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'action':self.action,
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'repository':self.repository}
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#===================================================================
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# GIT REQUEST HANDLING
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#===================================================================
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self.basepath = self.config['base_path']
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self.repo_path = os.path.join(self.basepath, self.repo_name)
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#quick check if that dir exists...
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if check_repo_fast(self.repo_name, self.basepath):
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return HTTPNotFound()(environ, start_response)
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try:
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app = self.__make_app()
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except:
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log.error(traceback.format_exc())
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return HTTPInternalServerError()(environ, start_response)
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#invalidate cache on push
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if self.action == 'push':
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self.__invalidate_cache(self.repo_name)
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messages = []
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messages.append('thank you for using rhodecode')
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return app(environ, start_response)
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else:
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return app(environ, start_response)
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def __make_app(self):
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backend = dulserver.DictBackend({'/' + self.repo_name: Repo(self.repo_path)})
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gitserve = HTTPGitApplication(backend)
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return gitserve
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def __get_environ_user(self, environ):
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return environ.get('REMOTE_USER')
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def __get_user(self, username):
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return UserModel().get_by_username(username, cache=True)
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def __get_action(self, environ):
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"""
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Maps git request commands into a pull or push command.
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:param environ:
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"""
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service = environ['QUERY_STRING'].split('=')
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if len(service) > 1:
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service_cmd = service[1]
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mapping = {'git-receive-pack': 'push',
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'git-upload-pack': 'pull',
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}
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return mapping.get(service_cmd, service_cmd if service_cmd else 'other')
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else:
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return 'other'
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def __invalidate_cache(self, repo_name):
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"""we know that some change was made to repositories and we should
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invalidate the cache to see the changes right away but only for
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push requests"""
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invalidate_cache('get_repo_cached_%s' % repo_name)
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