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# -*- coding: utf-8 -*-
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"""
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rhodecode.lib.middleware.simplegit
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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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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:created_on: Apr 28, 2010
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:author: marcink
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:copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
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:license: GPLv3, see COPYING for more details.
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"""
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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import os
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import re
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import logging
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import traceback
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from dulwich import server as dulserver
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from dulwich.web import LimitedInputFilter, GunzipFilter
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from rhodecode.lib.exceptions import HTTPLockedRC
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from rhodecode.lib.hooks import pre_pull
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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,
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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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# Did the process short-circuit (e.g. in a stateless RPC call)? Note
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# that the client still expects a 0-object pack in most cases.
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if objects_iter is None:
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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_objects(dulserver.ProtocolFile(None, write),
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objects_iter)
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messages = ['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-ls-remote, git-clone, git-fetch and git-pull
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'git-upload-pack': SimpleGitUploadPackHandler,
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#git-push
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'git-receive-pack': dulserver.ReceivePackHandler,
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}
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# not used for now until dulwich gets fixed
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#from dulwich.repo import Repo
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#from dulwich.web import make_wsgi_chain
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from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError, \
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HTTPBadRequest, HTTPNotAcceptable
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from rhodecode.lib.utils2 import safe_str, fix_PATH, get_server_url,\
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_set_extras
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from rhodecode.lib.base import BaseVCSController
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from rhodecode.lib.auth import get_container_username
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from rhodecode.lib.utils import is_valid_repo, make_ui
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from rhodecode.lib.compat import json
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from rhodecode.model.db import User, RhodeCodeUi
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log = logging.getLogger(__name__)
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GIT_PROTO_PAT = re.compile(r'^/(.+)/(info/refs|git-upload-pack|git-receive-pack)')
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def is_git(environ):
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path_info = environ['PATH_INFO']
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isgit_path = GIT_PROTO_PAT.match(path_info)
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log.debug('pathinfo: %s detected as GIT %s' % (
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path_info, isgit_path is not None)
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)
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return isgit_path
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class SimpleGit(BaseVCSController):
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def _handle_request(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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if not self._check_ssl(environ, start_response):
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return HTTPNotAcceptable('SSL REQUIRED !')(environ, start_response)
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ip_addr = self._get_ip_addr(environ)
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username = None
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self._git_first_op = False
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# skip passing error to error controller
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environ['pylons.status_code_redirect'] = True
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#======================================================================
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# EXTRACT REPOSITORY NAME FROM ENV
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#======================================================================
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try:
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repo_name = self.__get_repository(environ)
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log.debug('Extracted repo name is %s' % repo_name)
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except Exception:
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return HTTPInternalServerError()(environ, start_response)
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# quick check if that dir exists...
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if not is_valid_repo(repo_name, self.basepath, 'git'):
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return HTTPNotFound()(environ, start_response)
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#======================================================================
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# GET ACTION PULL or PUSH
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#======================================================================
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action = self.__get_action(environ)
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#======================================================================
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# CHECK ANONYMOUS PERMISSION
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#======================================================================
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if action in ['pull', 'push']:
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anonymous_user = self.__get_user('default')
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username = anonymous_user.username
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anonymous_perm = self._check_permission(action, anonymous_user,
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repo_name, ip_addr)
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if not anonymous_perm or not anonymous_user.active:
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if not anonymous_perm:
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log.debug('Not enough credentials to access this '
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'repository as anonymous user')
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if not anonymous_user.active:
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log.debug('Anonymous access is disabled, running '
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'authentication')
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#==============================================================
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# DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
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# NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
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#==============================================================
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# Attempting to retrieve username from the container
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username = get_container_username(environ, self.config)
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# If not authenticated by the container, running basic auth
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if not username:
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self.authenticate.realm = \
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safe_str(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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username = 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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# CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME
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#==============================================================
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try:
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user = self.__get_user(username)
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if user is None or not user.active:
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return HTTPForbidden()(environ, start_response)
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username = user.username
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except Exception:
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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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perm = self._check_permission(action, user, repo_name, ip_addr)
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if not perm:
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return HTTPForbidden()(environ, start_response)
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# extras are injected into UI object and later available
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# in hooks executed by rhodecode
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from rhodecode import CONFIG
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server_url = get_server_url(environ)
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extras = {
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'ip': ip_addr,
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'username': username,
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'action': action,
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'repository': repo_name,
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'scm': 'git',
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'config': CONFIG['__file__'],
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'server_url': server_url,
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'make_lock': None,
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'locked_by': [None, None]
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}
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#===================================================================
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# GIT REQUEST HANDLING
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#===================================================================
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str_repo_name = safe_str(repo_name)
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repo_path = os.path.join(safe_str(self.basepath),str_repo_name)
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log.debug('Repository path is %s' % repo_path)
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# CHECK LOCKING only if it's not ANONYMOUS USER
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if username != User.DEFAULT_USER:
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log.debug('Checking locking on repository')
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(make_lock,
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locked,
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locked_by) = self._check_locking_state(
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environ=environ, action=action,
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repo=repo_name, user_id=user.user_id
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)
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# store the make_lock for later evaluation in hooks
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extras.update({'make_lock': make_lock,
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'locked_by': locked_by})
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fix_PATH()
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log.debug('HOOKS extras is %s' % extras)
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baseui = make_ui('db')
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self.__inject_extras(repo_path, baseui, extras)
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try:
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self._handle_githooks(repo_name, action, baseui, environ)
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log.info('%s action on GIT repo "%s" by "%s" from %s' %
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(action, str_repo_name, safe_str(username), ip_addr))
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app = self.__make_app(repo_name, repo_path, extras)
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return app(environ, start_response)
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except HTTPLockedRC, e:
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_code = CONFIG.get('lock_ret_code')
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log.debug('Repository LOCKED ret code %s!' % (_code))
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return e(environ, start_response)
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except Exception:
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log.error(traceback.format_exc())
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return HTTPInternalServerError()(environ, start_response)
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finally:
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# invalidate cache on push
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if action == 'push':
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self._invalidate_cache(repo_name)
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def __make_app(self, repo_name, repo_path, extras):
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"""
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Make an wsgi application using dulserver
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:param repo_name: name of the repository
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:param repo_path: full path to the repository
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"""
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from rhodecode.lib.middleware.pygrack import make_wsgi_app
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app = make_wsgi_app(
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repo_root=safe_str(self.basepath),
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repo_name=repo_name,
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extras=extras,
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)
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app = GunzipFilter(LimitedInputFilter(app))
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return app
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def __get_repository(self, environ):
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"""
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Gets repository name out of PATH_INFO header
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:param environ: environ where PATH_INFO is stored
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"""
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try:
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environ['PATH_INFO'] = self._get_by_id(environ['PATH_INFO'])
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repo_name = GIT_PROTO_PAT.match(environ['PATH_INFO']).group(1)
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except Exception:
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log.error(traceback.format_exc())
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raise
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return repo_name
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def __get_user(self, username):
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return User.get_by_username(username)
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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 = {
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'git-receive-pack': 'push',
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'git-upload-pack': 'pull',
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}
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op = mapping[service_cmd]
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self._git_stored_op = op
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return op
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else:
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# try to fallback to stored variable as we don't know if the last
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# operation is pull/push
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op = getattr(self, '_git_stored_op', 'pull')
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return op
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def _handle_githooks(self, repo_name, action, baseui, environ):
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"""
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Handles pull action, push is handled by post-receive hook
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"""
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from rhodecode.lib.hooks import log_pull_action
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service = environ['QUERY_STRING'].split('=')
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if len(service) < 2:
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return
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from rhodecode.model.db import Repository
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_repo = Repository.get_by_repo_name(repo_name)
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_repo = _repo.scm_instance
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_hooks = dict(baseui.configitems('hooks')) or {}
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if action == 'pull':
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# stupid git, emulate pre-pull hook !
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pre_pull(ui=baseui, repo=_repo._repo)
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if action == 'pull' and _hooks.get(RhodeCodeUi.HOOK_PULL):
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log_pull_action(ui=baseui, repo=_repo._repo)
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def __inject_extras(self, repo_path, baseui, extras={}):
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"""
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Injects some extra params into baseui instance
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:param baseui: baseui instance
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:param extras: dict with extra params to put into baseui
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"""
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_set_extras(extras)
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