fixes #97 in simplehg and simplegit, force casting to headers

rhodecode/lib/middleware/simplegit.py

@@ -1,226 +1,277
 # -*- coding: utf-8 -*-
 """
     rhodecode.lib.middleware.simplegit
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     SimpleGit middleware for handling git 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 <[e-mail]>    
     :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; 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.
 
 import os
 import logging
 import traceback
 
 from dulwich import server as dulserver
 
 class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
 
     def handle(self):
         write = lambda x: self.proto.write_sideband(1, x)
 
         graph_walker = dulserver.ProtocolGraphWalker(self, self.repo.object_store,
             self.repo.get_peeled)
         objects_iter = self.repo.fetch_objects(
           graph_walker.determine_wants, graph_walker, self.progress,
           get_tagged=self.get_tagged)
 
         # Do they want any objects?
         if len(objects_iter) == 0:
             return
 
         self.progress("counting objects: %d, done.\n" % len(objects_iter))
         dulserver.write_pack_data(dulserver.ProtocolFile(None, write), objects_iter,
                         len(objects_iter))
         messages = []
         messages.append('thank you for using rhodecode')
 
         for msg in messages:
             self.progress(msg + "\n")
         # we are done
         self.proto.write("0000")
 
 dulserver.DEFAULT_HANDLERS = {
   'git-upload-pack': SimpleGitUploadPackHandler,
   'git-receive-pack': dulserver.ReceivePackHandler,
 }
 
 from dulwich.repo import Repo
 from dulwich.web import HTTPGitApplication
 
 from paste.auth.basic import AuthBasicAuthenticator
 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
 
 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
 from rhodecode.lib.utils import invalidate_cache, check_repo_fast
 from rhodecode.model.user import UserModel
 
 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
 
 log = logging.getLogger(__name__)
 
 def is_git(environ):
-    """Returns True if request's target is git server. ``HTTP_USER_AGENT`` would
-    then have git client version given.
+    """Returns True if request's target is git server. 
+    ``HTTP_USER_AGENT`` would then have git client version given.
     
     :param environ:
     """
     http_user_agent = environ.get('HTTP_USER_AGENT')
     if http_user_agent and http_user_agent.startswith('git'):
         return True
     return False
 
 class SimpleGit(object):
 
     def __init__(self, application, config):
         self.application = application
         self.config = config
         #authenticate this git request using 
         self.authenticate = AuthBasicAuthenticator('', authfunc)
         self.ipaddr = '0.0.0.0'
         self.repository = None
         self.username = None
         self.action = None
 
     def __call__(self, environ, start_response):
         if not is_git(environ):
             return self.application(environ, start_response)
 
         proxy_key = 'HTTP_X_REAL_IP'
         def_key = 'REMOTE_ADDR'
         self.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
-        #===================================================================
-        # AUTHENTICATE THIS GIT REQUEST
-        #===================================================================
-        username = REMOTE_USER(environ)
-        if not username:
-            self.authenticate.realm = 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)
 
-        #=======================================================================
-        # GET REPOSITORY
-        #=======================================================================
+        #======================================================================
+        # GET ACTION PULL or PUSH
+        #======================================================================
+        self.action = self.__get_action(environ)
         try:
-            repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
-            if repo_name.endswith('/'):
-                repo_name = repo_name.rstrip('/')
-            self.repository = repo_name
+            #==================================================================
+            # GET REPOSITORY NAME
+            #==================================================================            
+            self.repo_name = self.__get_repository(environ)
         except:
-            log.error(traceback.format_exc())
             return HTTPInternalServerError()(environ, start_response)
 
-        #===================================================================
-        # CHECK PERMISSIONS FOR THIS REQUEST
-        #===================================================================
-        self.action = self.__get_action(environ)
-        if self.action:
-            username = self.__get_environ_user(environ)
-            try:
-                user = self.__get_user(username)
-                self.username = user.username
-            except:
-                log.error(traceback.format_exc())
-                return HTTPInternalServerError()(environ, start_response)
+        #======================================================================
+        # CHECK ANONYMOUS PERMISSION
+        #======================================================================
+        if self.action in ['pull', 'push'] or self.action:
+            anonymous_user = self.__get_user('default')
+            self.username = anonymous_user.username
+            anonymous_perm = self.__check_permission(self.action, anonymous_user ,
+                                           self.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
+                #==============================================================
 
-            #check permissions for this repository
-            if self.action == 'push':
-                if not HasPermissionAnyMiddleware('repository.write',
-                                                  'repository.admin')\
-                                                    (user, repo_name):
-                    return HTTPForbidden()(environ, start_response)
+                if not REMOTE_USER(environ):
+                    self.authenticate.realm = 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
+                #==============================================================
 
-            else:
-                #any other action need at least read permission
-                if not HasPermissionAnyMiddleware('repository.read',
-                                                  'repository.write',
-                                                  'repository.admin')\
-                                                    (user, repo_name):
-                    return HTTPForbidden()(environ, start_response)
+                if self.action in ['pull', 'push']  or self.action:
+                    username = self.__get_environ_user(environ)
+                    try:
+                        user = self.__get_user(username)
+                        self.username = user.username
+                    except:
+                        log.error(traceback.format_exc())
+                        return HTTPInternalServerError()(environ, start_response)
+
+                    #check permissions for this repository
+                    perm = self.__check_permission(self.action, user, self.repo_name)
+                    if perm is not True:
+                        print 'not allowed'
+                        return HTTPForbidden()(environ, start_response)
 
         self.extras = {'ip':self.ipaddr,
                        'username':self.username,
                        'action':self.action,
-                       'repository':self.repository}
+                       'repository':self.repo_name}
 
         #===================================================================
         # GIT REQUEST HANDLING
         #===================================================================
         self.basepath = self.config['base_path']
         self.repo_path = os.path.join(self.basepath, self.repo_name)
         #quick check if that dir exists...
         if check_repo_fast(self.repo_name, self.basepath):
             return HTTPNotFound()(environ, start_response)
         try:
             app = self.__make_app()
         except:
             log.error(traceback.format_exc())
             return HTTPInternalServerError()(environ, start_response)
 
         #invalidate cache on push
         if self.action == 'push':
             self.__invalidate_cache(self.repo_name)
             messages = []
             messages.append('thank you for using rhodecode')
             return app(environ, start_response)
         else:
             return app(environ, start_response)
 
 
     def __make_app(self):
         backend = dulserver.DictBackend({'/' + self.repo_name: Repo(self.repo_path)})
         gitserve = HTTPGitApplication(backend)
 
         return gitserve
 
+    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
+        repo_name = repo_name.split('/')[0]
+        return repo_name
+
     def __get_environ_user(self, environ):
         return environ.get('REMOTE_USER')
 
     def __get_user(self, username):
         return UserModel().get_by_username(username, cache=True)
 
     def __get_action(self, environ):
         """Maps git request commands into a pull or push command.
         
         :param environ:
         """
         service = environ['QUERY_STRING'].split('=')
         if len(service) > 1:
             service_cmd = service[1]
             mapping = {'git-receive-pack': 'push',
                        'git-upload-pack': 'pull',
                        }
 
             return mapping.get(service_cmd, service_cmd if service_cmd else 'other')
         else:
             return 'other'
 
     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)

rhodecode/lib/middleware/simplehg.py

@@ -1,275 +1,275
 # -*- 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 <[e-mail]>    
     :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; 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.
 
 import os
 import logging
 import traceback
 
 from mercurial.error import RepoError
 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
 
 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
 from rhodecode.lib.utils import make_ui, invalidate_cache, \
     check_repo_fast, ui_sections
 from rhodecode.model.user import UserModel
 
 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
         #authenticate this mercurial request using authfunc
         self.authenticate = AuthBasicAuthenticator('', authfunc)
         self.ipaddr = '0.0.0.0'
         self.repo_name = None
         self.username = None
         self.action = None
 
     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'
         self.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
 
         #======================================================================
         # GET ACTION PULL or PUSH
         #======================================================================
         self.action = self.__get_action(environ)
         try:
             #==================================================================
             # GET REPOSITORY NAME
             #==================================================================            
             self.repo_name = self.__get_repository(environ)
         except:
             return HTTPInternalServerError()(environ, start_response)
 
         #======================================================================
         # CHECK ANONYMOUS PERMISSION
         #======================================================================
         if self.action in ['pull', 'push']:
             anonymous_user = self.__get_user('default')
             self.username = anonymous_user.username
             anonymous_perm = self.__check_permission(self.action, anonymous_user ,
                                            self.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 AUTHENTICATED USER PERMISSIONS
-                #==================================================================
+                #==============================================================
+                # 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 = self.config['rhodecode_realm']
+                    self.authenticate.realm = 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 self.action in ['pull', 'push']:
                     username = self.__get_environ_user(environ)
                     try:
                         user = self.__get_user(username)
                         self.username = user.username
                     except:
                         log.error(traceback.format_exc())
                         return HTTPInternalServerError()(environ, start_response)
 
                     #check permissions for this repository
                     perm = self.__check_permission(self.action, user, self.repo_name)
                     if perm is not True:
                         return HTTPForbidden()(environ, start_response)
 
         self.extras = {'ip':self.ipaddr,
                        'username':self.username,
                        'action':self.action,
                        'repository':self.repo_name}
 
         #===================================================================
         # 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, self.repo_name)
 
         #quick check if that dir exists...
         if check_repo_fast(self.repo_name, self.basepath):
             return HTTPNotFound()(environ, start_response)
         try:
             app = wsgiapplication(self.__make_app)
         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)
 
         #invalidate cache on push
         if self.action == 'push':
             self.__invalidate_cache(self.repo_name)
 
         return app(environ, start_response)
 
 
     def __make_app(self):
         """Make an wsgi application using hgweb, and my generated baseui
         instance
         """
 
         hgserve = hgweb(str(self.repo_path), baseui=self.baseui)
         return  self.__load_web_settings(hgserve, self.extras)
 
 
     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_environ_user(self, environ):
         return environ.get('REMOTE_USER')
 
     def __get_user(self, username):
         return UserModel().get_by_username(username, cache=True)
 
     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 mapping.has_key(cmd):
                     return mapping[cmd]
                 else:
                     return cmd
 
     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 __load_web_settings(self, hgserve, extras={}):
         #set the global ui for hgserve instance passed
         hgserve.repo.ui = self.baseui
 
         hgrc = os.path.join(self.repo_path, '.hg', 'hgrc')
 
         #inject some additional parameters that will be available in ui
         #for hooks
         for k, v in extras.items():
             hgserve.repo.ui.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):
                     hgserve.repo.ui.setconfig(section, k, v)
 
         return hgserve