|
|
# -*- coding: utf-8 -*-
|
|
|
"""
|
|
|
rhodecode.lib.middleware.simplehg
|
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
|
|
SimpleHG middleware for handling mercurial protocol request
|
|
|
(push/clone etc.). It's implemented with basic auth function
|
|
|
|
|
|
:created_on: Apr 28, 2010
|
|
|
:author: marcink
|
|
|
:copyright: (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
|
|
|
:license: GPLv3, see COPYING for more details.
|
|
|
"""
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU General Public License as published by
|
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
|
# (at your option) any later version.
|
|
|
#
|
|
|
# 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 General Public License
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
import os
|
|
|
import logging
|
|
|
import traceback
|
|
|
|
|
|
from mercurial.error import RepoError
|
|
|
from mercurial.hgweb import hgweb_mod
|
|
|
|
|
|
from paste.auth.basic import AuthBasicAuthenticator
|
|
|
from paste.httpheaders import REMOTE_USER, AUTH_TYPE
|
|
|
|
|
|
from rhodecode.lib import safe_str
|
|
|
from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
|
|
|
from rhodecode.lib.utils import make_ui, invalidate_cache, \
|
|
|
is_valid_repo, ui_sections
|
|
|
from rhodecode.model.db import User
|
|
|
|
|
|
from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
|
|
|
def is_mercurial(environ):
|
|
|
"""Returns True if request's target is mercurial server - header
|
|
|
``HTTP_ACCEPT`` of such request would start with ``application/mercurial``.
|
|
|
"""
|
|
|
http_accept = environ.get('HTTP_ACCEPT')
|
|
|
if http_accept and http_accept.startswith('application/mercurial'):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
|
|
|
class SimpleHg(object):
|
|
|
|
|
|
def __init__(self, application, config):
|
|
|
self.application = application
|
|
|
self.config = config
|
|
|
# base path of repo locations
|
|
|
self.basepath = self.config['base_path']
|
|
|
#authenticate this mercurial request using authfunc
|
|
|
self.authenticate = AuthBasicAuthenticator('', authfunc)
|
|
|
self.ipaddr = '0.0.0.0'
|
|
|
|
|
|
def __call__(self, environ, start_response):
|
|
|
if not is_mercurial(environ):
|
|
|
return self.application(environ, start_response)
|
|
|
|
|
|
proxy_key = 'HTTP_X_REAL_IP'
|
|
|
def_key = 'REMOTE_ADDR'
|
|
|
ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
|
|
|
|
|
|
# skip passing error to error controller
|
|
|
environ['pylons.status_code_redirect'] = True
|
|
|
|
|
|
#======================================================================
|
|
|
# EXTRACT REPOSITORY NAME FROM ENV
|
|
|
#======================================================================
|
|
|
try:
|
|
|
repo_name = environ['REPO_NAME'] = self.__get_repository(environ)
|
|
|
log.debug('Extracted repo name is %s' % repo_name)
|
|
|
except:
|
|
|
return HTTPInternalServerError()(environ, start_response)
|
|
|
|
|
|
#======================================================================
|
|
|
# GET ACTION PULL or PUSH
|
|
|
#======================================================================
|
|
|
action = self.__get_action(environ)
|
|
|
|
|
|
#======================================================================
|
|
|
# CHECK ANONYMOUS PERMISSION
|
|
|
#======================================================================
|
|
|
if action in ['pull', 'push']:
|
|
|
anonymous_user = self.__get_user('default')
|
|
|
|
|
|
username = anonymous_user.username
|
|
|
anonymous_perm = self.__check_permission(action,
|
|
|
anonymous_user,
|
|
|
repo_name)
|
|
|
|
|
|
if anonymous_perm is not True or anonymous_user.active is False:
|
|
|
if anonymous_perm is not True:
|
|
|
log.debug('Not enough credentials to access this '
|
|
|
'repository as anonymous user')
|
|
|
if anonymous_user.active is False:
|
|
|
log.debug('Anonymous access is disabled, running '
|
|
|
'authentication')
|
|
|
#==============================================================
|
|
|
# DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
|
|
|
# NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
|
|
|
#==============================================================
|
|
|
|
|
|
if not REMOTE_USER(environ):
|
|
|
self.authenticate.realm = \
|
|
|
safe_str(self.config['rhodecode_realm'])
|
|
|
result = self.authenticate(environ)
|
|
|
if isinstance(result, str):
|
|
|
AUTH_TYPE.update(environ, 'basic')
|
|
|
REMOTE_USER.update(environ, result)
|
|
|
else:
|
|
|
return result.wsgi_application(environ, start_response)
|
|
|
|
|
|
#==============================================================
|
|
|
# CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME FROM
|
|
|
# BASIC AUTH
|
|
|
#==============================================================
|
|
|
|
|
|
if action in ['pull', 'push']:
|
|
|
username = REMOTE_USER(environ)
|
|
|
try:
|
|
|
user = self.__get_user(username)
|
|
|
if user is None:
|
|
|
return HTTPForbidden()(environ, start_response)
|
|
|
username = user.username
|
|
|
except:
|
|
|
log.error(traceback.format_exc())
|
|
|
return HTTPInternalServerError()(environ,
|
|
|
start_response)
|
|
|
|
|
|
#check permissions for this repository
|
|
|
perm = self.__check_permission(action, user,
|
|
|
repo_name)
|
|
|
if perm is not True:
|
|
|
return HTTPForbidden()(environ, start_response)
|
|
|
|
|
|
extras = {'ip': ipaddr,
|
|
|
'username': username,
|
|
|
'action': action,
|
|
|
'repository': repo_name}
|
|
|
|
|
|
#======================================================================
|
|
|
# MERCURIAL REQUEST HANDLING
|
|
|
#======================================================================
|
|
|
|
|
|
repo_path = safe_str(os.path.join(self.basepath, repo_name))
|
|
|
log.debug('Repository path is %s' % repo_path)
|
|
|
|
|
|
baseui = make_ui('db')
|
|
|
self.__inject_extras(repo_path, baseui, extras)
|
|
|
|
|
|
|
|
|
# quick check if that dir exists...
|
|
|
if is_valid_repo(repo_name, self.basepath) is False:
|
|
|
return HTTPNotFound()(environ, start_response)
|
|
|
|
|
|
try:
|
|
|
#invalidate cache on push
|
|
|
if action == 'push':
|
|
|
self.__invalidate_cache(repo_name)
|
|
|
|
|
|
app = self.__make_app(repo_path, baseui, extras)
|
|
|
return app(environ, start_response)
|
|
|
except RepoError, e:
|
|
|
if str(e).find('not found') != -1:
|
|
|
return HTTPNotFound()(environ, start_response)
|
|
|
except Exception:
|
|
|
log.error(traceback.format_exc())
|
|
|
return HTTPInternalServerError()(environ, start_response)
|
|
|
|
|
|
def __make_app(self, repo_name, baseui, extras):
|
|
|
"""
|
|
|
Make an wsgi application using hgweb, and inject generated baseui
|
|
|
instance, additionally inject some extras into ui object
|
|
|
"""
|
|
|
return hgweb_mod.hgweb(repo_name, name=repo_name, baseui=baseui)
|
|
|
|
|
|
|
|
|
def __check_permission(self, action, user, repo_name):
|
|
|
"""
|
|
|
Checks permissions using action (push/pull) user and repository
|
|
|
name
|
|
|
|
|
|
:param action: push or pull action
|
|
|
:param user: user instance
|
|
|
:param repo_name: repository name
|
|
|
"""
|
|
|
if action == 'push':
|
|
|
if not HasPermissionAnyMiddleware('repository.write',
|
|
|
'repository.admin')(user,
|
|
|
repo_name):
|
|
|
return False
|
|
|
|
|
|
else:
|
|
|
#any other action need at least read permission
|
|
|
if not HasPermissionAnyMiddleware('repository.read',
|
|
|
'repository.write',
|
|
|
'repository.admin')(user,
|
|
|
repo_name):
|
|
|
return False
|
|
|
|
|
|
return True
|
|
|
|
|
|
def __get_repository(self, environ):
|
|
|
"""
|
|
|
Get's repository name out of PATH_INFO header
|
|
|
|
|
|
:param environ: environ where PATH_INFO is stored
|
|
|
"""
|
|
|
try:
|
|
|
repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
|
|
|
if repo_name.endswith('/'):
|
|
|
repo_name = repo_name.rstrip('/')
|
|
|
except:
|
|
|
log.error(traceback.format_exc())
|
|
|
raise
|
|
|
|
|
|
return repo_name
|
|
|
|
|
|
def __get_user(self, username):
|
|
|
return User.get_by_username(username)
|
|
|
|
|
|
def __get_action(self, environ):
|
|
|
"""
|
|
|
Maps mercurial request commands into a clone,pull or push command.
|
|
|
This should always return a valid command string
|
|
|
|
|
|
:param environ:
|
|
|
"""
|
|
|
mapping = {'changegroup': 'pull',
|
|
|
'changegroupsubset': 'pull',
|
|
|
'stream_out': 'pull',
|
|
|
'listkeys': 'pull',
|
|
|
'unbundle': 'push',
|
|
|
'pushkey': 'push', }
|
|
|
for qry in environ['QUERY_STRING'].split('&'):
|
|
|
if qry.startswith('cmd'):
|
|
|
cmd = qry.split('=')[-1]
|
|
|
if cmd in mapping:
|
|
|
return mapping[cmd]
|
|
|
else:
|
|
|
return 'pull'
|
|
|
|
|
|
def __invalidate_cache(self, repo_name):
|
|
|
"""we know that some change was made to repositories and we should
|
|
|
invalidate the cache to see the changes right away but only for
|
|
|
push requests"""
|
|
|
invalidate_cache('get_repo_cached_%s' % repo_name)
|
|
|
|
|
|
def __inject_extras(self, repo_path, baseui, extras={}):
|
|
|
"""
|
|
|
Injects some extra params into baseui instance
|
|
|
|
|
|
also overwrites global settings with those takes from local hgrc file
|
|
|
|
|
|
:param baseui: baseui instance
|
|
|
:param extras: dict with extra params to put into baseui
|
|
|
"""
|
|
|
|
|
|
hgrc = os.path.join(repo_path, '.hg', 'hgrc')
|
|
|
|
|
|
# make our hgweb quiet so it doesn't print output
|
|
|
baseui.setconfig('ui', 'quiet', 'true')
|
|
|
|
|
|
#inject some additional parameters that will be available in ui
|
|
|
#for hooks
|
|
|
for k, v in extras.items():
|
|
|
baseui.setconfig('rhodecode_extras', k, v)
|
|
|
|
|
|
repoui = make_ui('file', hgrc, False)
|
|
|
|
|
|
if repoui:
|
|
|
#overwrite our ui instance with the section from hgrc file
|
|
|
for section in ui_sections:
|
|
|
for k, v in repoui.configitems(section):
|
|
|
baseui.setconfig(section, k, v)
|
|
|
|
|
|
|
