simplehg.py
221 lines
| 8.3 KiB
| text/x-python
|
PythonLexer
r204 | #!/usr/bin/env python | |||
# encoding: utf-8 | ||||
r252 | # middleware to handle mercurial api calls | |||
# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com> | ||||
r385 | # | |||
r252 | # 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; version 2 | ||||
# of the License or (at your opinion) any later version of the license. | ||||
# | ||||
# 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, write to the Free Software | ||||
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||||
# MA 02110-1301, USA. | ||||
r392 | """ | |||
Created on 2010-04-28 | ||||
@author: marcink | ||||
SimpleHG middleware for handling mercurial protocol request (push/clone etc.) | ||||
It's implemented with basic auth function | ||||
""" | ||||
r317 | from itertools import chain | |||
r343 | from mercurial.error import RepoError | |||
r204 | from mercurial.hgweb import hgweb | |||
from mercurial.hgweb.request import wsgiapplication | ||||
from paste.auth.basic import AuthBasicAuthenticator | ||||
from paste.httpheaders import REMOTE_USER, AUTH_TYPE | ||||
r343 | from pylons_app.lib.auth import authfunc, HasPermissionAnyMiddleware, \ | |||
get_user_cached | ||||
r334 | from pylons_app.lib.utils import is_mercurial, make_ui, invalidate_cache, \ | |||
r385 | check_repo_fast, ui_sections | |||
r334 | from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError | |||
r536 | from pylons_app.lib.utils import action_logger | |||
r204 | import logging | |||
import os | ||||
r317 | import traceback | |||
r343 | ||||
r204 | log = logging.getLogger(__name__) | |||
class SimpleHg(object): | ||||
def __init__(self, application, config): | ||||
self.application = application | ||||
self.config = config | ||||
#authenticate this mercurial request using | ||||
r350 | self.authenticate = AuthBasicAuthenticator('', authfunc) | |||
r204 | ||||
def __call__(self, environ, start_response): | ||||
if not is_mercurial(environ): | ||||
return self.application(environ, start_response) | ||||
r343 | ||||
#=================================================================== | ||||
# AUTHENTICATE THIS MERCURIAL REQUEST | ||||
#=================================================================== | ||||
username = REMOTE_USER(environ) | ||||
if not username: | ||||
r381 | self.authenticate.realm = self.config['hg_app_realm'] | |||
r343 | 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) | ||||
try: | ||||
repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:]) | ||||
r445 | if repo_name.endswith('/'): | |||
repo_name = repo_name.rstrip('/') | ||||
r343 | except: | |||
log.error(traceback.format_exc()) | ||||
return HTTPInternalServerError()(environ, start_response) | ||||
#=================================================================== | ||||
# CHECK PERMISSIONS FOR THIS REQUEST | ||||
#=================================================================== | ||||
action = self.__get_action(environ) | ||||
if action: | ||||
username = self.__get_environ_user(environ) | ||||
r204 | try: | |||
r343 | user = self.__get_user(username) | |||
r334 | except: | |||
r317 | log.error(traceback.format_exc()) | |||
r334 | return HTTPInternalServerError()(environ, start_response) | |||
r343 | #check permissions for this repository | |||
if action == 'pull': | ||||
if not HasPermissionAnyMiddleware('repository.read', | ||||
'repository.write', | ||||
'repository.admin')\ | ||||
(user, repo_name): | ||||
return HTTPForbidden()(environ, start_response) | ||||
if action == 'push': | ||||
if not HasPermissionAnyMiddleware('repository.write', | ||||
'repository.admin')\ | ||||
(user, repo_name): | ||||
return HTTPForbidden()(environ, start_response) | ||||
r204 | ||||
r343 | #log action | |||
proxy_key = 'HTTP_X_REAL_IP' | ||||
def_key = 'REMOTE_ADDR' | ||||
ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0')) | ||||
self.__log_user_action(user, action, repo_name, ipaddr) | ||||
#=================================================================== | ||||
# MERCURIAL REQUEST HANDLING | ||||
#=================================================================== | ||||
environ['PATH_INFO'] = '/'#since we wrap into hgweb, reset the path | ||||
self.baseui = make_ui('db') | ||||
self.basepath = self.config['base_path'] | ||||
self.repo_path = os.path.join(self.basepath, repo_name) | ||||
r334 | ||||
r343 | #quick check if that dir exists... | |||
if check_repo_fast(repo_name, self.basepath): | ||||
return HTTPNotFound()(environ, start_response) | ||||
try: | ||||
app = wsgiapplication(self.__make_app) | ||||
r503 | except RepoError, e: | |||
r343 | if str(e).find('not found') != -1: | |||
r334 | return HTTPNotFound()(environ, start_response) | |||
r343 | except Exception: | |||
log.error(traceback.format_exc()) | ||||
return HTTPInternalServerError()(environ, start_response) | ||||
#invalidate cache on push | ||||
if action == 'push': | ||||
self.__invalidate_cache(repo_name) | ||||
messages = [] | ||||
messages.append('thank you for using hg-app') | ||||
return self.msg_wrapper(app, environ, start_response, messages) | ||||
else: | ||||
return app(environ, start_response) | ||||
r257 | ||||
r340 | def msg_wrapper(self, app, environ, start_response, messages=[]): | |||
r257 | """ | |||
Wrapper for custom messages that come out of mercurial respond messages | ||||
r317 | is a list of messages that the user will see at the end of response | |||
from merurial protocol actions that involves remote answers | ||||
r257 | @param app: | |||
@param environ: | ||||
@param start_response: | ||||
""" | ||||
def custom_messages(msg_list): | ||||
for msg in msg_list: | ||||
yield msg + '\n' | ||||
org_response = app(environ, start_response) | ||||
return chain(org_response, custom_messages(messages)) | ||||
r204 | ||||
def __make_app(self): | ||||
r341 | hgserve = hgweb(str(self.repo_path), baseui=self.baseui) | |||
r218 | return self.__load_web_settings(hgserve) | |||
r204 | ||||
def __get_environ_user(self, environ): | ||||
return environ.get('REMOTE_USER') | ||||
r340 | ||||
r343 | def __get_user(self, username): | |||
return get_user_cached(username) | ||||
r204 | def __get_action(self, environ): | |||
""" | ||||
Maps mercurial request commands into a pull or push command. | ||||
@param environ: | ||||
""" | ||||
r330 | mapping = {'changegroup': 'pull', | |||
'changegroupsubset': 'pull', | ||||
'stream_out': 'pull', | ||||
'listkeys': 'pull', | ||||
'unbundle': 'push', | ||||
'pushkey': 'push', } | ||||
r204 | for qry in environ['QUERY_STRING'].split('&'): | |||
if qry.startswith('cmd'): | ||||
cmd = qry.split('=')[-1] | ||||
if mapping.has_key(cmd): | ||||
return mapping[cmd] | ||||
r331 | def __log_user_action(self, user, action, repo, ipaddr): | |||
r536 | action_logger(user, action, repo, ipaddr) | |||
r350 | ||||
r204 | 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('cached_repo_list') | ||||
invalidate_cache('full_changelog', repo_name) | ||||
r218 | def __load_web_settings(self, hgserve): | |||
r204 | #set the global ui for hgserve | |||
hgserve.repo.ui = self.baseui | ||||
r341 | hgrc = os.path.join(self.repo_path, '.hg', 'hgrc') | |||
repoui = make_ui('file', hgrc, False) | ||||
r385 | ||||
r204 | if repoui: | |||
r385 | #overwrite our ui instance with the section from hgrc file | |||
for section in ui_sections: | ||||
for k, v in repoui.configitems(section): | ||||
hgserve.repo.ui.setconfig(section, k, v) | ||||
r204 | ||||
return hgserve | ||||
r385 | ||||