kallithea Changeset - ee6b7e9f34e6

Changeset - ee6b7e9f34e6

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Søren Løvborg - 9 years ago 2016-09-23 00:29:30
sorenl@unity3d.com

auth: perform basic HTTP security checks already in BaseController

There's no reason to postpone these to a LoginRequired decorated
controller function. This way, they run unconditionally for all
subclasses of BaseController (so everything except JSON-RPC and
VCS controllers).

3 files changed with 47 insertions and 27 deletions:

kallithea/lib/auth.py

kallithea/lib/base.py

kallithea/tests/functional/test_basecontroller.py

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kallithea/lib/auth.py

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@@ @@ -721,87 +721,60 @@ class LoginRequired(object): @@
         user = controller.authuser
         loc = "%s:%s" % (controller.__class__.__name__, func.__name__)
         log.debug('Checking access for user %s @ %s', user, loc)
         if not AuthUser.check_ip_allowed(user, controller.ip_addr):
             raise _redirect_to_login(_('IP %s not allowed') % controller.ip_addr)
         # check if we used an API key and it's a valid one
         api_key = request.GET.get('api_key')
         if api_key is not None:
             # explicit controller is enabled or API is in our whitelist
             if self.api_access or allowed_api_access(loc, api_key=api_key):
                 if api_key in user.api_keys:
                     log.info('user %s authenticated with API key ****%s @ %s',
                              user, api_key[-4:], loc)
                     return func(*fargs, **fkwargs)
                 else:
                     log.warning('API key ****%s is NOT valid', api_key[-4:])
                     raise _redirect_to_login(_('Invalid API key'))
             else:
                 # controller does not allow API access
                 log.warning('API access to %s is not allowed', loc)
                 raise HTTPForbidden()
         # Only allow the following HTTP request methods.
         if request.method not in ['GET', 'HEAD', 'POST']:
             raise HTTPMethodNotAllowed()
         # Also verify the _method override - no longer allowed
         _method = request.params.get('_method')
         if _method is None:
             pass # no override, no problem
         else:
             raise HTTPMethodNotAllowed()
         # Make sure CSRF token never appears in the URL. If so, invalidate it.
         if secure_form.token_key in request.GET:
             log.error('CSRF key leak detected')
             session.pop(secure_form.token_key, None)
             session.save()
             from kallithea.lib import helpers as h
             h.flash(_("CSRF token leak has been detected - all form tokens have been expired"),
                     category='error')
         # CSRF protection: Whenever a request has ambient authority (whether
         # through a session cookie or its origin IP address), it must include
         # the correct token, unless the HTTP method is GET or HEAD (and thus
         # guaranteed to be side effect free. In practice, the only situation
         # where we allow side effects without ambient authority is when the
         # authority comes from an API key; and that is handled above.
         if request.method not in ['GET', 'HEAD']:
             token = request.POST.get(secure_form.token_key)
             if not token or token != secure_form.authentication_token():
                 log.error('CSRF check failed')
                 raise HTTPForbidden()
         # WebOb already ignores request payload parameters for anything other
         # than POST/PUT, but double-check since other Kallithea code relies on
         # this assumption.
         if request.method not in ['POST', 'PUT'] and request.POST:
             log.error('%r request with payload parameters; WebOb should have stopped this', request.method)
             raise HTTPBadRequest()
         # regular user authentication
         if user.is_authenticated or user.is_default_user:
             log.info('user %s authenticated with regular auth @ %s', user, loc)
             return func(*fargs, **fkwargs)
         else:
             log.warning('user %s NOT authenticated with regular auth @ %s', user, loc)
             raise _redirect_to_login()
 class NotAnonymous(object):
     """
     Must be logged in to execute this function else
     redirect to login page"""
     def __call__(self, func):
         return decorator(self.__wrapper, func)
     def __wrapper(self, func, *fargs, **fkwargs):
         cls = fargs[0]
         self.user = cls.authuser
         log.debug('Checking if user is not anonymous @%s', cls)
         if self.user.is_default_user:
             raise _redirect_to_login(_('You need to be a registered user to '

kallithea/lib/base.py

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@@ @@ -16,48 +16,49 @@ @@
 kallithea.lib.base
 ~~~~~~~~~~~~~~~~~~
 The base Controller API
 Provides the BaseController class for subclassing. And usage in different
 controllers
 This file was forked by the Kallithea project in July 2014.
 Original author and date, and relevant copyright and licensing information is below:
 :created_on: Oct 06, 2010
 :author: marcink
 :copyright: (c) 2013 RhodeCode GmbH, and others.
 :license: GPLv3, see LICENSE.md for more details.
 """
 import datetime
 import logging
 import time
 import traceback
 import webob.exc
 import paste.httpexceptions
 import paste.auth.basic
 import paste.httpheaders
 from webhelpers.pylonslib import secure_form
 from pylons import config, tmpl_context as c, request, session
 from pylons.controllers import WSGIController
 from pylons.templating import render_mako as render  # don't remove this import
 from pylons.i18n.translation import _
 from kallithea import __version__, BACKENDS
 from kallithea.config.routing import url
 from kallithea.lib.utils2 import str2bool, safe_unicode, AttributeDict, \
     safe_str, safe_int
 from kallithea.lib import auth_modules
 from kallithea.lib.auth import AuthUser, HasPermissionAnyMiddleware
 from kallithea.lib.utils import get_repo_slug
 from kallithea.lib.exceptions import UserCreationError
 from kallithea.lib.vcs.exceptions import RepositoryError, EmptyRepositoryError, ChangesetDoesNotExistError
 from kallithea.model import meta
 from kallithea.model.db import PullRequest, Repository, Ui, User, Setting
 from kallithea.model.notification import NotificationModel
 from kallithea.model.scm import ScmModel
 log = logging.getLogger(__name__)
@@ @@ -391,69 +392,103 @@ class BaseController(WSGIController): @@
                 # exception object.
                 from kallithea.lib import helpers as h
                 h.flash(e, 'error', logf=log.error)
         # Authenticate by auth_container plugin (if enabled)
         if any(
             auth_modules.importplugin(name).is_container_auth
             for name in Setting.get_auth_plugins()
         ):
             try:
                 user_info = auth_modules.authenticate('', '', request.environ)
             except UserCreationError as e:
                 from kallithea.lib import helpers as h
                 h.flash(e, 'error', logf=log.error)
             else:
                 if user_info is not None:
                     username = user_info['username']
                     user = User.get_by_username(username, case_insensitive=True)
                     return log_in_user(user, remember=False,
                                        is_external_auth=True)
         # User is anonymous
         return AuthUser()
     @staticmethod
     def _basic_security_checks():
         """Perform basic security/sanity checks before processing the request."""
         # Only allow the following HTTP request methods.
         if request.method not in ['GET', 'HEAD', 'POST']:
             raise webob.exc.HTTPMethodNotAllowed()
         # Also verify the _method override - no longer allowed.
         if request.params.get('_method') is None:
             pass # no override, no problem
         else:
             raise webob.exc.HTTPMethodNotAllowed()
         # Make sure CSRF token never appears in the URL. If so, invalidate it.
         if secure_form.token_key in request.GET:
             log.error('CSRF key leak detected')
             session.pop(secure_form.token_key, None)
             session.save()
             from kallithea.lib import helpers as h
             h.flash(_('CSRF token leak has been detected - all form tokens have been expired'),
                     category='error')
         # WebOb already ignores request payload parameters for anything other
         # than POST/PUT, but double-check since other Kallithea code relies on
         # this assumption.
         if request.method not in ['POST', 'PUT'] and request.POST:
             log.error('%r request with payload parameters; WebOb should have stopped this', request.method)
             raise webob.exc.HTTPBadRequest()
     def __call__(self, environ, start_response):
         """Invoke the Controller"""
         # WSGIController.__call__ dispatches to the Controller method
         # the request is routed to. This routing information is
         # available in environ['pylons.routes_dict']
         try:
             self.ip_addr = _get_ip_addr(environ)
             # make sure that we update permissions each time we call controller
             self._basic_security_checks()
             #set globals for auth user
             self.authuser = c.authuser = request.user = self._determine_auth_user(
                 request.GET.get('api_key'),
                 session.get('authuser'),
+            )
             log.info('IP: %s User: %s accessed %s',
                 self.ip_addr, self.authuser,
                 safe_unicode(_get_access_path(environ)),
+            )
             return WSGIController.__call__(self, environ, start_response)
         except webob.exc.HTTPException as e:
             return e(environ, start_response)
         finally:
             meta.Session.remove()
 class BaseRepoController(BaseController):
     """
     Base class for controllers responsible for loading all needed data for
     repository loaded items are
     c.db_repo_scm_instance: instance of scm repository
     c.db_repo: instance of db
     c.repository_followers: number of followers
     c.repository_forks: number of forks
     c.repository_following: weather the current user is following the current repo
     """
     def __before__(self):
         super(BaseRepoController, self).__before__()
         if c.repo_name:  # extracted from routes
             _dbr = Repository.get_by_repo_name(c.repo_name)
             if not _dbr:
                 return
             log.debug('Found repository in database %s with state `%s`',

kallithea/tests/functional/test_basecontroller.py

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@@ new file 100644 @@
 from kallithea.tests.base import TestController, url
 class TestBaseController(TestController):
     def test_banned_http_methods(self):
         self.app.request(url(controller='login', action='index'), method='PUT', status=405)
         self.app.request(url(controller='login', action='index'), method='DELETE', status=405)
     def test_banned_http_method_override(self):
         self.app.get(url(controller='login', action='index'), {'_method': 'POST'}, status=405)
         self.app.post(url(controller='login', action='index'), {'_method': 'PUT'}, status=405)

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