kallithea Changeset - 7977ca209b1d

Changeset - 7977ca209b1d

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Mads Kiilerich - 7 years ago 2019-04-08 00:11:20
mads@kiilerich.com

auth: make User.get_by_api_key more strict about only returning active non-default users

Thus drop some extra checks against default user.

2 files changed with 7 insertions and 5 deletions:

kallithea/lib/base.py

kallithea/model/db.py

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kallithea/lib/base.py

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 # -*- coding: utf-8 -*-
 # 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/>.
 """
 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 decorator
 import logging
 import time
 import traceback
 import warnings
 import webob.exc
 import paste.httpexceptions
 import paste.auth.basic
 import paste.httpheaders
 from webhelpers.pylonslib import secure_form
 from tg import config, tmpl_context as c, request, response, session, render_template
 from tg import TGController
 from tg.i18n import ugettext as _
 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.compat import json
 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.scm import ScmModel
 log = logging.getLogger(__name__)
 def render(template_path):
     return render_template({'url': url}, 'mako', template_path)
 def _filter_proxy(ip):
     """
     HEADERS can have multiple ips inside the left-most being the original
     client, and each successive proxy that passed the request adding the IP
     address where it received the request from.
     :param ip:
     """
     if ',' in ip:
         _ips = ip.split(',')
         _first_ip = _ips[0].strip()
         log.debug('Got multiple IPs %s, using %s', ','.join(_ips), _first_ip)
         return _first_ip
     return ip
 def _get_ip_addr(environ):
     proxy_key = 'HTTP_X_REAL_IP'
     proxy_key2 = 'HTTP_X_FORWARDED_FOR'
     def_key = 'REMOTE_ADDR'
     ip = environ.get(proxy_key)
     if ip:
         return _filter_proxy(ip)
     ip = environ.get(proxy_key2)
     if ip:
         return _filter_proxy(ip)
     ip = environ.get(def_key, '0.0.0.0')
     return _filter_proxy(ip)
 def _get_access_path(environ):
     path = environ.get('PATH_INFO')
     org_req = environ.get('tg.original_request')
     if org_req:
         path = org_req.environ.get('PATH_INFO')
     return path
 def log_in_user(user, remember, is_external_auth, ip_addr):
     """
     Log a `User` in and update session and cookies. If `remember` is True,
     the session cookie is set to expire in a year; otherwise, it expires at
     the end of the browser session.
     Returns populated `AuthUser` object.
     """
     # It should not be possible to explicitly log in as the default user.
     assert not user.is_default_user, user
     auth_user = AuthUser.make(dbuser=user, is_external_auth=is_external_auth, ip_addr=ip_addr)
     if auth_user is None:
         return None
     user.update_lastlogin()
     meta.Session().commit()
     # Start new session to prevent session fixation attacks.
     session.invalidate()
     session['authuser'] = cookie = auth_user.to_cookie()
     # If they want to be remembered, update the cookie.
     # NOTE: Assumes that beaker defaults to browser session cookie.
     if remember:
         t = datetime.datetime.now() + datetime.timedelta(days=365)
         session._set_cookie_expires(t)
     session.save()
     log.info('user %s is now authenticated and stored in '
              'session, session attrs %s', user.username, cookie)
     # dumps session attrs back to cookie
     session._update_cookie_out()
     return auth_user
 class BasicAuth(paste.auth.basic.AuthBasicAuthenticator):
     def __init__(self, realm, authfunc, auth_http_code=None):
         self.realm = realm
         self.authfunc = authfunc
         self._rc_auth_http_code = auth_http_code
     def build_authentication(self, environ):
         head = paste.httpheaders.WWW_AUTHENTICATE.tuples('Basic realm="%s"' % self.realm)
         # Consume the whole body before sending a response
         try:
             request_body_size = int(environ.get('CONTENT_LENGTH', 0))
         except (ValueError):
             request_body_size = 0
         environ['wsgi.input'].read(request_body_size)
         if self._rc_auth_http_code and self._rc_auth_http_code == '403':
             # return 403 if alternative http return code is specified in
             # Kallithea config
             return paste.httpexceptions.HTTPForbidden(headers=head)
         return paste.httpexceptions.HTTPUnauthorized(headers=head)
     def authenticate(self, environ):
         authorization = paste.httpheaders.AUTHORIZATION(environ)
         if not authorization:
             return self.build_authentication(environ)
         (authmeth, auth) = authorization.split(' ', 1)
         if 'basic' != authmeth.lower():
             return self.build_authentication(environ)
         auth = auth.strip().decode('base64')
         _parts = auth.split(':', 1)
         if len(_parts) == 2:
             username, password = _parts
             if self.authfunc(username, password, environ) is not None:
                 return username
         return self.build_authentication(environ)
     __call__ = authenticate
 class BaseVCSController(object):
     """Base controller for handling Mercurial/Git protocol requests
     (coming from a VCS client, and not a browser).
     """
     def __init__(self, application, config):
         self.application = application
         self.config = config
         # base path of repo locations
         self.basepath = self.config['base_path']
         # authenticate this VCS request using the authentication modules
         self.authenticate = BasicAuth('', auth_modules.authenticate,
                                       config.get('auth_ret_code'))
     def _authorize(self, environ, start_response, action, repo_name, ip_addr):
         """Authenticate and authorize user.
         Since we're dealing with a VCS client and not a browser, we only
         support HTTP basic authentication, either directly via raw header
         inspection, or by using container authentication to delegate the
         authentication to the web server.
         Returns (user, None) on successful authentication and authorization.
         Returns (None, wsgi_app) to send the wsgi_app response to the client.
         """
         # Use anonymous access if allowed for action on repo.
         default_user = User.get_default_user(cache=True)
         default_authuser = AuthUser.make(dbuser=default_user, ip_addr=ip_addr)
         if default_authuser is None:
             log.debug('No anonymous access at all') # move on to proper user auth
         else:
             if self._check_permission(action, default_authuser, repo_name):
                 return default_authuser, None
             log.debug('Not authorized to access this repository as anonymous user')
         username = None
         #==============================================================
         # DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
         # NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
         #==============================================================
         # try to auth based on environ, container auth methods
         log.debug('Running PRE-AUTH for container based authentication')
         pre_auth = auth_modules.authenticate('', '', environ)
         if pre_auth is not None and pre_auth.get('username'):
             username = pre_auth['username']
         log.debug('PRE-AUTH got %s as username', username)
         # If not authenticated by the container, running basic auth
         if not username:
             self.authenticate.realm = safe_str(self.config['realm'])
             result = self.authenticate(environ)
             if isinstance(result, str):
                 paste.httpheaders.AUTH_TYPE.update(environ, 'basic')
                 paste.httpheaders.REMOTE_USER.update(environ, result)
                 username = result
             else:
                 return None, result.wsgi_application
         #==============================================================
         # CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME
         #==============================================================
         try:
             user = User.get_by_username_or_email(username)
         except Exception:
             log.error(traceback.format_exc())
             return None, webob.exc.HTTPInternalServerError()
         authuser = AuthUser.make(dbuser=user, ip_addr=ip_addr)
         if authuser is None:
             return None, webob.exc.HTTPForbidden()
         if not self._check_permission(action, authuser, repo_name):
             return None, webob.exc.HTTPForbidden()
         return user, None
     def _handle_request(self, environ, start_response):
         raise NotImplementedError()
     def _get_by_id(self, repo_name):
         """
         Gets a special pattern _<ID> from clone url and tries to replace it
         with a repository_name for support of _<ID> permanent URLs
         :param repo_name:
         """
         data = repo_name.split('/')
         if len(data) >= 2:
             from kallithea.lib.utils import get_repo_by_id
             by_id_match = get_repo_by_id(repo_name)
             if by_id_match:
                 data[1] = safe_str(by_id_match)
         return '/'.join(data)
     def _check_permission(self, action, authuser, 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')(authuser,
                                                                   repo_name):
                 return False
         else:
             #any other action need at least read permission
             if not HasPermissionAnyMiddleware('repository.read',
                                               'repository.write',
                                               'repository.admin')(authuser,
                                                                   repo_name):
                 return False
         return True
     def _get_ip_addr(self, environ):
         return _get_ip_addr(environ)
     def __call__(self, environ, start_response):
         start = time.time()
         try:
             return self._handle_request(environ, start_response)
         finally:
             log = logging.getLogger('kallithea.' + self.__class__.__name__)
             log.debug('Request time: %.3fs', time.time() - start)
             meta.Session.remove()
 class BaseController(TGController):
     def _before(self, *args, **kwargs):
         """
         _before is called before controller methods and after __call__
         """
         c.kallithea_version = __version__
         rc_config = Setting.get_app_settings()
         # Visual options
         c.visual = AttributeDict({})
         ## DB stored
         c.visual.show_public_icon = str2bool(rc_config.get('show_public_icon'))
         c.visual.show_private_icon = str2bool(rc_config.get('show_private_icon'))
         c.visual.stylify_metalabels = str2bool(rc_config.get('stylify_metalabels'))
         c.visual.page_size = safe_int(rc_config.get('dashboard_items', 100))
         c.visual.admin_grid_items = safe_int(rc_config.get('admin_grid_items', 100))
         c.visual.repository_fields = str2bool(rc_config.get('repository_fields'))
         c.visual.show_version = str2bool(rc_config.get('show_version'))
         c.visual.use_gravatar = str2bool(rc_config.get('use_gravatar'))
         c.visual.gravatar_url = rc_config.get('gravatar_url')
         c.ga_code = rc_config.get('ga_code')
         # TODO: replace undocumented backwards compatibility hack with db upgrade and rename ga_code
         if c.ga_code and '<' not in c.ga_code:
             c.ga_code = '''<script type="text/javascript">
                 var _gaq = _gaq || [];
                 _gaq.push(['_setAccount', '%s']);
                 _gaq.push(['_trackPageview']);
                 (function() {
                     var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
                     ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
                     var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
                     })();
             </script>''' % c.ga_code
         c.site_name = rc_config.get('title')
         c.clone_uri_tmpl = rc_config.get('clone_uri_tmpl')
         ## INI stored
         c.visual.allow_repo_location_change = str2bool(config.get('allow_repo_location_change', True))
         c.visual.allow_custom_hooks_settings = str2bool(config.get('allow_custom_hooks_settings', True))
         c.instance_id = config.get('instance_id')
         c.issues_url = config.get('bugtracker', url('issues_url'))
         # END CONFIG VARS
         c.repo_name = get_repo_slug(request)  # can be empty
         c.backends = BACKENDS.keys()
         self.cut_off_limit = safe_int(config.get('cut_off_limit'))
         c.my_pr_count = PullRequest.query(reviewer_id=request.authuser.user_id, include_closed=False).count()
         self.scm_model = ScmModel()
     @staticmethod
     def _determine_auth_user(api_key, bearer_token, session_authuser, ip_addr):
         """
         Create an `AuthUser` object given the API key/bearer token
         (if any) and the value of the authuser session cookie.
         Returns None if no valid user is found (like not active or no access for IP).
         """
         # Authenticate by bearer token
         if bearer_token is not None:
             api_key = bearer_token
         # Authenticate by API key
         if api_key is not None:
             dbuser = User.get_by_api_key(api_key)
             au = AuthUser.make(dbuser=dbuser, authenticating_api_key=api_key, is_external_auth=True, ip_addr=ip_addr)
             if au is None or au.is_anonymous:
                 log.warning('API key ****%s is NOT valid', api_key[-4:])
                 raise webob.exc.HTTPForbidden(_('Invalid API key'))
             return au
             if dbuser is None:
                 log.info('No db user found for authentication with API key ****%s from %s',
                          api_key[-4:], ip_addr)
                 return None
             return AuthUser.make(dbuser=dbuser, authenticating_api_key=api_key, is_external_auth=True, ip_addr=ip_addr)
         # Authenticate by session cookie
         # In ancient login sessions, 'authuser' may not be a dict.
         # In that case, the user will have to log in again.
         # v0.3 and earlier included an 'is_authenticated' key; if present,
         # this must be True.
         if isinstance(session_authuser, dict) and session_authuser.get('is_authenticated', True):
             return AuthUser.from_cookie(session_authuser, ip_addr=ip_addr)
         # Authenticate by auth_container plugin (if enabled)
         if any(
             plugin.is_container_auth
             for plugin in auth_modules.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, ip_addr=ip_addr)
         # User is default user (if active) or anonymous
         default_user = User.get_default_user(cache=True)
         authuser = AuthUser.make(dbuser=default_user, ip_addr=ip_addr)
         if authuser is None: # fall back to anonymous
             authuser = AuthUser(dbuser=default_user) # TODO: somehow use .make?
         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, context):
         try:
             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
             bearer_token = None
             try:
                 # Request.authorization may raise ValueError on invalid input
                 type, params = request.authorization
             except (ValueError, TypeError):
                 pass
             else:
                 if type.lower() == 'bearer':
                     bearer_token = params
             authuser = self._determine_auth_user(
                 request.GET.get('api_key'),
                 bearer_token,
                 session.get('authuser'),
                 ip_addr=ip_addr,
+            )
             if authuser is None:
                 log.info('No valid user found')
                 raise webob.exc.HTTPForbidden()
             request.authuser = authuser
             request.ip_addr = ip_addr
             log.info('IP: %s User: %s accessed %s',
                 request.ip_addr, request.authuser,
                 safe_unicode(_get_access_path(environ)),
+            )
             return super(BaseController, self).__call__(environ, context)
         except webob.exc.HTTPException as e:
             return e
 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, *args, **kwargs):
         super(BaseRepoController, self)._before(*args, **kwargs)
         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`',
                       safe_unicode(_dbr), safe_unicode(_dbr.repo_state))
             route = getattr(request.environ.get('routes.route'), 'name', '')
             # allow to delete repos that are somehow damages in filesystem
             if route in ['delete_repo']:
                 return
             if _dbr.repo_state in [Repository.STATE_PENDING]:
                 if route in ['repo_creating_home']:
                     return
                 check_url = url('repo_creating_home', repo_name=c.repo_name)
                 raise webob.exc.HTTPFound(location=check_url)
             dbr = c.db_repo = _dbr
             c.db_repo_scm_instance = c.db_repo.scm_instance
             if c.db_repo_scm_instance is None:
                 log.error('%s this repository is present in database but it '
                           'cannot be created as an scm instance', c.repo_name)
                 from kallithea.lib import helpers as h
                 h.flash(_('Repository not found in the filesystem'),
                         category='error')
                 raise webob.exc.HTTPNotFound()
             # some globals counter for menu
             c.repository_followers = self.scm_model.get_followers(dbr)
             c.repository_forks = self.scm_model.get_forks(dbr)
             c.repository_pull_requests = self.scm_model.get_pull_requests(dbr)
             c.repository_following = self.scm_model.is_following_repo(
                                     c.repo_name, request.authuser.user_id)
     @staticmethod
     def _get_ref_rev(repo, ref_type, ref_name, returnempty=False):
         """
         Safe way to get changeset. If error occurs show error.
         """
         from kallithea.lib import helpers as h
         try:
             return repo.scm_instance.get_ref_revision(ref_type, ref_name)
         except EmptyRepositoryError as e:
             if returnempty:
                 return repo.scm_instance.EMPTY_CHANGESET
             h.flash(_('There are no changesets yet'), category='error')
             raise webob.exc.HTTPNotFound()
         except ChangesetDoesNotExistError as e:
             h.flash(_('Changeset for %s %s not found in %s') %
                               (ref_type, ref_name, repo.repo_name),
                     category='error')
             raise webob.exc.HTTPNotFound()
         except RepositoryError as e:
             log.error(traceback.format_exc())
             h.flash(safe_str(e), category='error')
             raise webob.exc.HTTPBadRequest()
 @decorator.decorator
 def jsonify(func, *args, **kwargs):
     """Action decorator that formats output for JSON
     Given a function that will return content, this decorator will turn
     the result into JSON, with a content-type of 'application/json' and
     output it.
     """
     response.headers['Content-Type'] = 'application/json; charset=utf-8'
     data = func(*args, **kwargs)
     if isinstance(data, (list, tuple)):
         # A JSON list response is syntactically valid JavaScript and can be
         # loaded and executed as JavaScript by a malicious third-party site
         # using <script>, which can lead to cross-site data leaks.
         # JSON responses should therefore be scalars or objects (i.e. Python
         # dicts), because a JSON object is a syntax error if intepreted as JS.
         msg = "JSON responses with Array envelopes are susceptible to " \
               "cross-site data leak attacks, see " \
               "https://web.archive.org/web/20120519231904/http://wiki.pylonshq.com/display/pylonsfaq/Warnings"
         warnings.warn(msg, Warning, 2)
         log.warning(msg)
     log.debug("Returning JSON wrapped action output")
     return json.dumps(data, encoding='utf-8')

kallithea/model/db.py

➞

Show inline comments

 # -*- coding: utf-8 -*-
 # 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/>.
 """
 kallithea.model.db
 ~~~~~~~~~~~~~~~~~~
 Database Models for Kallithea
 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: Apr 08, 2010
 :author: marcink
 :copyright: (c) 2013 RhodeCode GmbH, and others.
 :license: GPLv3, see LICENSE.md for more details.
 """
 import os
 import time
 import logging
 import datetime
 import traceback
 import hashlib
 import collections
 import functools
 import sqlalchemy
 from sqlalchemy import *
 from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import relationship, joinedload, class_mapper, validates
 from beaker.cache import cache_region, region_invalidate
 from webob.exc import HTTPNotFound
 from tg.i18n import lazy_ugettext as _
 from kallithea.lib.exceptions import DefaultUserException
 from kallithea.lib.vcs import get_backend
 from kallithea.lib.vcs.utils.helpers import get_scm
 from kallithea.lib.vcs.utils.lazy import LazyProperty
 from kallithea.lib.vcs.backends.base import EmptyChangeset
 from kallithea.lib.utils2 import str2bool, safe_str, get_changeset_safe, \
     safe_unicode, remove_prefix, time_to_datetime, aslist, Optional, safe_int, \
     get_clone_url, urlreadable
 from kallithea.lib.compat import json
 from kallithea.lib.caching_query import FromCache
 from kallithea.model.meta import Base, Session
 URL_SEP = '/'
 log = logging.getLogger(__name__)
 #==============================================================================
 # BASE CLASSES
 #==============================================================================
 _hash_key = lambda k: hashlib.md5(safe_str(k)).hexdigest()
 class BaseDbModel(object):
     """
     Base Model for all classes
     """
     @classmethod
     def _get_keys(cls):
         """return column names for this model """
         return class_mapper(cls).c.keys()
     def get_dict(self):
         """
         return dict with keys and values corresponding
         to this model data """
         d = {}
         for k in self._get_keys():
             d[k] = getattr(self, k)
         # also use __json__() if present to get additional fields
         _json_attr = getattr(self, '__json__', None)
         if _json_attr:
             # update with attributes from __json__
             if callable(_json_attr):
                 _json_attr = _json_attr()
             for k, val in _json_attr.iteritems():
                 d[k] = val
         return d
     def get_appstruct(self):
         """return list with keys and values tuples corresponding
         to this model data """
         return [
             (k, getattr(self, k))
             for k in self._get_keys()
+        ]
     def populate_obj(self, populate_dict):
         """populate model with data from given populate_dict"""
         for k in self._get_keys():
             if k in populate_dict:
                 setattr(self, k, populate_dict[k])
     @classmethod
     def query(cls):
         return Session().query(cls)
     @classmethod
     def get(cls, id_):
         if id_:
             return cls.query().get(id_)
     @classmethod
     def guess_instance(cls, value, callback=None):
         """Haphazardly attempt to convert `value` to a `cls` instance.
         If `value` is None or already a `cls` instance, return it. If `value`
         is a number (or looks like one if you squint just right), assume it's
         a database primary key and let SQLAlchemy sort things out. Otherwise,
         fall back to resolving it using `callback` (if specified); this could
         e.g. be a function that looks up instances by name (though that won't
         work if the name begins with a digit). Otherwise, raise Exception.
         """
         if value is None:
             return None
         if isinstance(value, cls):
             return value
         if isinstance(value, (int, long)) or safe_str(value).isdigit():
             return cls.get(value)
         if callback is not None:
             return callback(value)
         raise Exception(
             'given object must be int, long or Instance of %s '
             'got %s, no callback provided' % (cls, type(value))
+        )
     @classmethod
     def get_or_404(cls, id_):
         try:
             id_ = int(id_)
         except (TypeError, ValueError):
             raise HTTPNotFound
         res = cls.query().get(id_)
         if res is None:
             raise HTTPNotFound
         return res
     @classmethod
     def delete(cls, id_):
         obj = cls.query().get(id_)
         Session().delete(obj)
     def __repr__(self):
         if hasattr(self, '__unicode__'):
             # python repr needs to return str
             try:
                 return safe_str(self.__unicode__())
             except UnicodeDecodeError:
                 pass
         return '<DB:%s>' % (self.__class__.__name__)
 _table_args_default_dict = {'extend_existing': True,
                             'mysql_engine': 'InnoDB',
                             'mysql_charset': 'utf8',
                             'sqlite_autoincrement': True,
+                           }
 class Setting(Base, BaseDbModel):
     __tablename__ = 'settings'
     __table_args__ = (
         _table_args_default_dict,
+    )
     SETTINGS_TYPES = {
         'str': safe_str,
         'int': safe_int,
         'unicode': safe_unicode,
         'bool': str2bool,
         'list': functools.partial(aslist, sep=',')
+    }
     DEFAULT_UPDATE_URL = ''
     app_settings_id = Column(Integer(), primary_key=True)
     app_settings_name = Column(String(255), nullable=False, unique=True)
     _app_settings_value = Column("app_settings_value", Unicode(4096), nullable=False)
     _app_settings_type = Column("app_settings_type", String(255), nullable=True) # FIXME: not nullable?
     def __init__(self, key='', val='', type='unicode'):
         self.app_settings_name = key
         self.app_settings_value = val
         self.app_settings_type = type
     @validates('_app_settings_value')
     def validate_settings_value(self, key, val):
         assert type(val) == unicode
         return val
     @hybrid_property
     def app_settings_value(self):
         v = self._app_settings_value
         _type = self.app_settings_type
         converter = self.SETTINGS_TYPES.get(_type) or self.SETTINGS_TYPES['unicode']
         return converter(v)
     @app_settings_value.setter
     def app_settings_value(self, val):
         """
         Setter that will always make sure we use unicode in app_settings_value
         :param val:
         """
         self._app_settings_value = safe_unicode(val)
     @hybrid_property
     def app_settings_type(self):
         return self._app_settings_type
     @app_settings_type.setter
     def app_settings_type(self, val):
         if val not in self.SETTINGS_TYPES:
             raise Exception('type must be one of %s got %s'
                             % (self.SETTINGS_TYPES.keys(), val))
         self._app_settings_type = val
     def __unicode__(self):
         return u"<%s('%s:%s[%s]')>" % (
             self.__class__.__name__,
             self.app_settings_name, self.app_settings_value, self.app_settings_type
+        )
     @classmethod
     def get_by_name(cls, key):
         return cls.query() \
             .filter(cls.app_settings_name == key).scalar()
     @classmethod
     def get_by_name_or_create(cls, key, val='', type='unicode'):
         res = cls.get_by_name(key)
         if res is None:
             res = cls(key, val, type)
         return res
     @classmethod
     def create_or_update(cls, key, val=Optional(''), type=Optional('unicode')):
         """
         Creates or updates Kallithea setting. If updates are triggered, it will only
         update parameters that are explicitly set. Optional instance will be skipped.
         :param key:
         :param val:
         :param type:
         :return:
         """
         res = cls.get_by_name(key)
         if res is None:
             val = Optional.extract(val)
             type = Optional.extract(type)
             res = cls(key, val, type)
             Session().add(res)
         else:
             res.app_settings_name = key
             if not isinstance(val, Optional):
                 # update if set
                 res.app_settings_value = val
             if not isinstance(type, Optional):
                 # update if set
                 res.app_settings_type = type
         return res
     @classmethod
     def get_app_settings(cls, cache=False):
         ret = cls.query()
         if cache:
             ret = ret.options(FromCache("sql_cache_short", "get_hg_settings"))
         if ret is None:
             raise Exception('Could not get application settings !')
         settings = {}
         for each in ret:
             settings[each.app_settings_name] = \
                 each.app_settings_value
         return settings
     @classmethod
     def get_auth_settings(cls, cache=False):
         ret = cls.query() \
                 .filter(cls.app_settings_name.startswith('auth_')).all()
         fd = {}
         for row in ret:
             fd[row.app_settings_name] = row.app_settings_value
         return fd
     @classmethod
     def get_default_repo_settings(cls, cache=False, strip_prefix=False):
         ret = cls.query() \
                 .filter(cls.app_settings_name.startswith('default_')).all()
         fd = {}
         for row in ret:
             key = row.app_settings_name
             if strip_prefix:
                 key = remove_prefix(key, prefix='default_')
             fd.update({key: row.app_settings_value})
         return fd
     @classmethod
     def get_server_info(cls):
         import pkg_resources
         import platform
         import kallithea
         from kallithea.lib.utils import check_git_version
         mods = [(p.project_name, p.version) for p in pkg_resources.working_set]
         info = {
             'modules': sorted(mods, key=lambda k: k[0].lower()),
             'py_version': platform.python_version(),
             'platform': safe_unicode(platform.platform()),
             'kallithea_version': kallithea.__version__,
             'git_version': safe_unicode(check_git_version()),
             'git_path': kallithea.CONFIG.get('git_path')
+        }
         return info
 class Ui(Base, BaseDbModel):
     __tablename__ = 'ui'
     __table_args__ = (
         # FIXME: ui_key as key is wrong and should be removed when the corresponding
         # Ui.get_by_key has been replaced by the composite key
         UniqueConstraint('ui_key'),
         UniqueConstraint('ui_section', 'ui_key'),
         _table_args_default_dict,
+    )
     HOOK_UPDATE = 'changegroup.update'
     HOOK_REPO_SIZE = 'changegroup.repo_size'
     ui_id = Column(Integer(), primary_key=True)
     ui_section = Column(String(255), nullable=False)
     ui_key = Column(String(255), nullable=False)
     ui_value = Column(String(255), nullable=True) # FIXME: not nullable?
     ui_active = Column(Boolean(), nullable=False, default=True)
     @classmethod
     def get_by_key(cls, section, key):
         """ Return specified Ui object, or None if not found. """
         return cls.query().filter_by(ui_section=section, ui_key=key).scalar()
     @classmethod
     def get_or_create(cls, section, key):
         """ Return specified Ui object, creating it if necessary. """
         setting = cls.get_by_key(section, key)
         if setting is None:
             setting = cls(ui_section=section, ui_key=key)
             Session().add(setting)
         return setting
     @classmethod
     def get_builtin_hooks(cls):
         q = cls.query()
         q = q.filter(cls.ui_key.in_([cls.HOOK_UPDATE, cls.HOOK_REPO_SIZE]))
         q = q.filter(cls.ui_section == 'hooks')
         return q.all()
     @classmethod
     def get_custom_hooks(cls):
         q = cls.query()
         q = q.filter(~cls.ui_key.in_([cls.HOOK_UPDATE, cls.HOOK_REPO_SIZE]))
         q = q.filter(cls.ui_section == 'hooks')
         return q.all()
     @classmethod
     def get_repos_location(cls):
         return cls.get_by_key('paths', '/').ui_value
     @classmethod
     def create_or_update_hook(cls, key, val):
         new_ui = cls.get_or_create('hooks', key)
         new_ui.ui_active = True
         new_ui.ui_value = val
     def __repr__(self):
         return '<%s[%s]%s=>%s]>' % (self.__class__.__name__, self.ui_section,
                                     self.ui_key, self.ui_value)
 class User(Base, BaseDbModel):
     __tablename__ = 'users'
     __table_args__ = (
         Index('u_username_idx', 'username'),
         Index('u_email_idx', 'email'),
         _table_args_default_dict,
+    )
     DEFAULT_USER = 'default'
     DEFAULT_GRAVATAR_URL = 'https://secure.gravatar.com/avatar/{md5email}?d=identicon&s={size}'
     # The name of the default auth type in extern_type, 'internal' lives in auth_internal.py
     DEFAULT_AUTH_TYPE = 'internal'
     user_id = Column(Integer(), primary_key=True)
     username = Column(String(255), nullable=False, unique=True)
     password = Column(String(255), nullable=False)
     active = Column(Boolean(), nullable=False, default=True)
     admin = Column(Boolean(), nullable=False, default=False)
     name = Column("firstname", Unicode(255), nullable=False)
     lastname = Column(Unicode(255), nullable=False)
     _email = Column("email", String(255), nullable=True, unique=True) # FIXME: not nullable?
     last_login = Column(DateTime(timezone=False), nullable=True)
     extern_type = Column(String(255), nullable=True) # FIXME: not nullable?
     extern_name = Column(String(255), nullable=True) # FIXME: not nullable?
     api_key = Column(String(255), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     _user_data = Column("user_data", LargeBinary(), nullable=True)  # JSON data # FIXME: not nullable?
     user_log = relationship('UserLog')
     user_perms = relationship('UserToPerm', primaryjoin="User.user_id==UserToPerm.user_id", cascade='all')
     repositories = relationship('Repository')
     repo_groups = relationship('RepoGroup')
     user_groups = relationship('UserGroup')
     user_followers = relationship('UserFollowing', primaryjoin='UserFollowing.follows_user_id==User.user_id', cascade='all')
     followings = relationship('UserFollowing', primaryjoin='UserFollowing.user_id==User.user_id', cascade='all')
     repo_to_perm = relationship('UserRepoToPerm', primaryjoin='UserRepoToPerm.user_id==User.user_id', cascade='all')
     repo_group_to_perm = relationship('UserRepoGroupToPerm', primaryjoin='UserRepoGroupToPerm.user_id==User.user_id', cascade='all')
     group_member = relationship('UserGroupMember', cascade='all')
     # comments created by this user
     user_comments = relationship('ChangesetComment', cascade='all')
     # extra emails for this user
     user_emails = relationship('UserEmailMap', cascade='all')
     # extra API keys
     user_api_keys = relationship('UserApiKeys', cascade='all')
     @hybrid_property
     def email(self):
         return self._email
     @email.setter
     def email(self, val):
         self._email = val.lower() if val else None
     @property
     def firstname(self):
         # alias for future
         return self.name
     @property
     def emails(self):
         other = UserEmailMap.query().filter(UserEmailMap.user == self).all()
         return [self.email] + [x.email for x in other]
     @property
     def api_keys(self):
         other = UserApiKeys.query().filter(UserApiKeys.user == self).all()
         return [self.api_key] + [x.api_key for x in other]
     @property
     def ip_addresses(self):
         ret = UserIpMap.query().filter(UserIpMap.user == self).all()
         return [x.ip_addr for x in ret]
     @property
     def full_name(self):
         return '%s %s' % (self.firstname, self.lastname)
     @property
     def full_name_or_username(self):
         """
         Show full name.
         If full name is not set, fall back to username.
         """
         return ('%s %s' % (self.firstname, self.lastname)
                 if (self.firstname and self.lastname) else self.username)
     @property
     def full_name_and_username(self):
         """
         Show full name and username as 'Firstname Lastname (username)'.
         If full name is not set, fall back to username.
         """
         return ('%s %s (%s)' % (self.firstname, self.lastname, self.username)
                 if (self.firstname and self.lastname) else self.username)
     @property
     def full_contact(self):
         return '%s %s <%s>' % (self.firstname, self.lastname, self.email)
     @property
     def short_contact(self):
         return '%s %s' % (self.firstname, self.lastname)
     @property
     def is_admin(self):
         return self.admin
     @hybrid_property
     def is_default_user(self):
         return self.username == User.DEFAULT_USER
     @hybrid_property
     def user_data(self):
         if not self._user_data:
             return {}
         try:
             return json.loads(self._user_data)
         except TypeError:
             return {}
     @user_data.setter
     def user_data(self, val):
         try:
             self._user_data = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.user_id, self.username)
     @classmethod
     def guess_instance(cls, value):
         return super(User, cls).guess_instance(value, User.get_by_username)
     @classmethod
     def get_or_404(cls, id_, allow_default=True):
         '''
         Overridden version of BaseDbModel.get_or_404, with an extra check on
         the default user.
         '''
         user = super(User, cls).get_or_404(id_)
         if not allow_default and user.is_default_user:
             raise DefaultUserException()
         return user
     @classmethod
     def get_by_username_or_email(cls, username_or_email, case_insensitive=False, cache=False):
         """
         For anything that looks like an email address, look up by the email address (matching
         case insensitively).
         For anything else, try to look up by the user name.
         This assumes no normal username can have '@' symbol.
         """
         if '@' in username_or_email:
             return User.get_by_email(username_or_email, cache=cache)
         else:
             return User.get_by_username(username_or_email, case_insensitive=case_insensitive, cache=cache)
     @classmethod
     def get_by_username(cls, username, case_insensitive=False, cache=False):
         if case_insensitive:
             q = cls.query().filter(func.lower(cls.username) == func.lower(username))
         else:
             q = cls.query().filter(cls.username == username)
         if cache:
             q = q.options(FromCache(
                             "sql_cache_short",
                             "get_user_%s" % _hash_key(username)
+                          )
+            )
         return q.scalar()
     @classmethod
     def get_by_api_key(cls, api_key, cache=False, fallback=True):
         if len(api_key) != 40 or not api_key.isalnum():
             return None
         q = cls.query().filter(cls.api_key == api_key)
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_api_key_%s" % api_key))
         res = q.scalar()
         if fallback and not res:
             # fallback to additional keys
             _res = UserApiKeys.query().filter_by(api_key=api_key, is_expired=False).first()
             if _res:
                 res = _res.user
         if res is None or not res.active or res.is_default_user:
             return None
         return res
     @classmethod
     def get_by_email(cls, email, cache=False):
         q = cls.query().filter(func.lower(cls.email) == func.lower(email))
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_email_key_%s" % email))
         ret = q.scalar()
         if ret is None:
             q = UserEmailMap.query()
             # try fetching in alternate email map
             q = q.filter(func.lower(UserEmailMap.email) == func.lower(email))
             q = q.options(joinedload(UserEmailMap.user))
             if cache:
                 q = q.options(FromCache("sql_cache_short",
                                         "get_email_map_key_%s" % email))
             ret = getattr(q.scalar(), 'user', None)
         return ret
     @classmethod
     def get_from_cs_author(cls, author):
         """
         Tries to get User objects out of commit author string
         :param author:
         """
         from kallithea.lib.helpers import email, author_name
         # Valid email in the attribute passed, see if they're in the system
         _email = email(author)
         if _email:
             user = cls.get_by_email(_email)
             if user is not None:
                 return user
         # Maybe we can match by username?
         _author = author_name(author)
         user = cls.get_by_username(_author, case_insensitive=True)
         if user is not None:
             return user
     def update_lastlogin(self):
         """Update user lastlogin"""
         self.last_login = datetime.datetime.now()
         log.debug('updated user %s lastlogin', self.username)
     @classmethod
     def get_first_admin(cls):
         user = User.query().filter(User.admin == True).first()
         if user is None:
             raise Exception('Missing administrative account!')
         return user
     @classmethod
     def get_default_user(cls, cache=False):
         user = User.get_by_username(User.DEFAULT_USER, cache=cache)
         if user is None:
             raise Exception('Missing default account!')
         return user
     def get_api_data(self, details=False):
         """
         Common function for generating user related data for API
         """
         user = self
         data = dict(
             user_id=user.user_id,
             username=user.username,
             firstname=user.name,
             lastname=user.lastname,
             email=user.email,
             emails=user.emails,
             active=user.active,
             admin=user.admin,
+        )
         if details:
             data.update(dict(
                 extern_type=user.extern_type,
                 extern_name=user.extern_name,
                 api_key=user.api_key,
                 api_keys=user.api_keys,
                 last_login=user.last_login,
                 ip_addresses=user.ip_addresses
                 ))
         return data
     def __json__(self):
         data = dict(
             full_name=self.full_name,
             full_name_or_username=self.full_name_or_username,
             short_contact=self.short_contact,
             full_contact=self.full_contact
+        )
         data.update(self.get_api_data())
         return data
 class UserApiKeys(Base, BaseDbModel):
     __tablename__ = 'user_api_keys'
     __table_args__ = (
         Index('uak_api_key_idx', 'api_key'),
         Index('uak_api_key_expires_idx', 'api_key', 'expires'),
         _table_args_default_dict,
+    )
     __mapper_args__ = {}
     user_api_key_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     api_key = Column(String(255), nullable=False, unique=True)
     description = Column(UnicodeText(), nullable=False)
     expires = Column(Float(53), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     user = relationship('User')
     @hybrid_property
     def is_expired(self):
         return (self.expires != -1) & (time.time() > self.expires)
 class UserEmailMap(Base, BaseDbModel):
     __tablename__ = 'user_email_map'
     __table_args__ = (
         Index('uem_email_idx', 'email'),
         _table_args_default_dict,
+    )
     __mapper_args__ = {}
     email_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     _email = Column("email", String(255), nullable=False, unique=True)
     user = relationship('User')
     @validates('_email')
     def validate_email(self, key, email):
         # check if this email is not main one
         main_email = Session().query(User).filter(User.email == email).scalar()
         if main_email is not None:
             raise AttributeError('email %s is present is user table' % email)
         return email
     @hybrid_property
     def email(self):
         return self._email
     @email.setter
     def email(self, val):
         self._email = val.lower() if val else None
 class UserIpMap(Base, BaseDbModel):
     __tablename__ = 'user_ip_map'
     __table_args__ = (
         UniqueConstraint('user_id', 'ip_addr'),
         _table_args_default_dict,
+    )
     __mapper_args__ = {}
     ip_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     ip_addr = Column(String(255), nullable=False)
     active = Column(Boolean(), nullable=False, default=True)
     user = relationship('User')
     @classmethod
     def _get_ip_range(cls, ip_addr):
         from kallithea.lib import ipaddr
         net = ipaddr.IPNetwork(address=ip_addr)
         return [str(net.network), str(net.broadcast)]
     def __json__(self):
         return dict(
           ip_addr=self.ip_addr,
           ip_range=self._get_ip_range(self.ip_addr)
+        )
     def __unicode__(self):
         return u"<%s('user_id:%s=>%s')>" % (self.__class__.__name__,
                                             self.user_id, self.ip_addr)
 class UserLog(Base, BaseDbModel):
     __tablename__ = 'user_logs'
     __table_args__ = (
         _table_args_default_dict,
+    )
     user_log_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=True)
     username = Column(String(255), nullable=False)
     repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=True)
     repository_name = Column(Unicode(255), nullable=False)
     user_ip = Column(String(255), nullable=True)
     action = Column(UnicodeText(), nullable=False)
     action_date = Column(DateTime(timezone=False), nullable=False)
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.repository_name,
                                       self.action)
     @property
     def action_as_day(self):
         return datetime.date(*self.action_date.timetuple()[:3])
     user = relationship('User')
     repository = relationship('Repository', cascade='')
 class UserGroup(Base, BaseDbModel):
     __tablename__ = 'users_groups'
     __table_args__ = (
         _table_args_default_dict,
+    )
     users_group_id = Column(Integer(), primary_key=True)
     users_group_name = Column(Unicode(255), nullable=False, unique=True)
     user_group_description = Column(Unicode(10000), nullable=True) # FIXME: not nullable?
     users_group_active = Column(Boolean(), nullable=False)
     owner_id = Column('user_id', Integer(), ForeignKey('users.user_id'), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     _group_data = Column("group_data", LargeBinary(), nullable=True)  # JSON data # FIXME: not nullable?
     members = relationship('UserGroupMember', cascade="all, delete-orphan")
     users_group_to_perm = relationship('UserGroupToPerm', cascade='all')
     users_group_repo_to_perm = relationship('UserGroupRepoToPerm', cascade='all')
     users_group_repo_group_to_perm = relationship('UserGroupRepoGroupToPerm', cascade='all')
     user_user_group_to_perm = relationship('UserUserGroupToPerm ', cascade='all')
     user_group_user_group_to_perm = relationship('UserGroupUserGroupToPerm ', primaryjoin="UserGroupUserGroupToPerm.target_user_group_id==UserGroup.users_group_id", cascade='all')
     owner = relationship('User')
     @hybrid_property
     def group_data(self):
         if not self._group_data:
             return {}
         try:
             return json.loads(self._group_data)
         except TypeError:
             return {}
     @group_data.setter
     def group_data(self, val):
         try:
             self._group_data = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.users_group_id,
                                       self.users_group_name)
     @classmethod
     def guess_instance(cls, value):
         return super(UserGroup, cls).guess_instance(value, UserGroup.get_by_group_name)
     @classmethod
     def get_by_group_name(cls, group_name, cache=False,
                           case_insensitive=False):
         if case_insensitive:
             q = cls.query().filter(func.lower(cls.users_group_name) == func.lower(group_name))
         else:
             q = cls.query().filter(cls.users_group_name == group_name)
         if cache:
             q = q.options(FromCache(
                             "sql_cache_short",
                             "get_group_%s" % _hash_key(group_name)
+                          )
+            )
         return q.scalar()
     @classmethod
     def get(cls, user_group_id, cache=False):
         user_group = cls.query()
         if cache:
             user_group = user_group.options(FromCache("sql_cache_short",
                                     "get_users_group_%s" % user_group_id))
         return user_group.get(user_group_id)
     def get_api_data(self, with_members=True):
         user_group = self
         data = dict(
             users_group_id=user_group.users_group_id,
             group_name=user_group.users_group_name,
             group_description=user_group.user_group_description,
             active=user_group.users_group_active,
             owner=user_group.owner.username,
+        )
         if with_members:
             data['members'] = [
                 ugm.user.get_api_data()
                 for ugm in user_group.members
+            ]
         return data
 class UserGroupMember(Base, BaseDbModel):
     __tablename__ = 'users_groups_members'
     __table_args__ = (
         _table_args_default_dict,
+    )
     users_group_member_id = Column(Integer(), primary_key=True)
     users_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     user = relationship('User')
     users_group = relationship('UserGroup')
     def __init__(self, gr_id='', u_id=''):
         self.users_group_id = gr_id
         self.user_id = u_id
 class RepositoryField(Base, BaseDbModel):
     __tablename__ = 'repositories_fields'
     __table_args__ = (
         UniqueConstraint('repository_id', 'field_key'),  # no-multi field
         _table_args_default_dict,
+    )
     PREFIX = 'ex_'  # prefix used in form to not conflict with already existing fields
     repo_field_id = Column(Integer(), primary_key=True)
     repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     field_key = Column(String(250), nullable=False)
     field_label = Column(String(1024), nullable=False)
     field_value = Column(String(10000), nullable=False)
     field_desc = Column(String(1024), nullable=False)
     field_type = Column(String(255), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     repository = relationship('Repository')
     @property
     def field_key_prefixed(self):
         return 'ex_%s' % self.field_key
     @classmethod
     def un_prefix_key(cls, key):
         if key.startswith(cls.PREFIX):
             return key[len(cls.PREFIX):]
         return key
     @classmethod
     def get_by_key_name(cls, key, repo):
         row = cls.query() \
                 .filter(cls.repository == repo) \
                 .filter(cls.field_key == key).scalar()
         return row
 class Repository(Base, BaseDbModel):
     __tablename__ = 'repositories'
     __table_args__ = (
         Index('r_repo_name_idx', 'repo_name'),
         _table_args_default_dict,
+    )
     DEFAULT_CLONE_URI = '{scheme}://{user}@{netloc}/{repo}'
     DEFAULT_CLONE_URI_ID = '{scheme}://{user}@{netloc}/_{repoid}'
     STATE_CREATED = u'repo_state_created'
     STATE_PENDING = u'repo_state_pending'
     STATE_ERROR = u'repo_state_error'
     repo_id = Column(Integer(), primary_key=True)
     repo_name = Column(Unicode(255), nullable=False, unique=True)
     repo_state = Column(String(255), nullable=False)
     clone_uri = Column(String(255), nullable=True) # FIXME: not nullable?
     repo_type = Column(String(255), nullable=False)
     owner_id = Column('user_id', Integer(), ForeignKey('users.user_id'), nullable=False)
     private = Column(Boolean(), nullable=False)
     enable_statistics = Column("statistics", Boolean(), nullable=False, default=True)
     enable_downloads = Column("downloads", Boolean(), nullable=False, default=True)
     description = Column(Unicode(10000), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     updated_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     _landing_revision = Column("landing_revision", String(255), nullable=False)
     _changeset_cache = Column("changeset_cache", LargeBinary(), nullable=True) # JSON data # FIXME: not nullable?
     fork_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=True)
     group_id = Column(Integer(), ForeignKey('groups.group_id'), nullable=True)
     owner = relationship('User')
     fork = relationship('Repository', remote_side=repo_id)
     group = relationship('RepoGroup')
     repo_to_perm = relationship('UserRepoToPerm', cascade='all', order_by='UserRepoToPerm.repo_to_perm_id')
     users_group_to_perm = relationship('UserGroupRepoToPerm', cascade='all')
     stats = relationship('Statistics', cascade='all', uselist=False)
     followers = relationship('UserFollowing',
                              primaryjoin='UserFollowing.follows_repository_id==Repository.repo_id',
                              cascade='all')
     extra_fields = relationship('RepositoryField',
                                 cascade="all, delete-orphan")
     logs = relationship('UserLog')
     comments = relationship('ChangesetComment', cascade="all, delete-orphan")
     pull_requests_org = relationship('PullRequest',
                     primaryjoin='PullRequest.org_repo_id==Repository.repo_id',
                     cascade="all, delete-orphan")
     pull_requests_other = relationship('PullRequest',
                     primaryjoin='PullRequest.other_repo_id==Repository.repo_id',
                     cascade="all, delete-orphan")
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (self.__class__.__name__, self.repo_id,
                                    safe_unicode(self.repo_name))
     @hybrid_property
     def landing_rev(self):
         # always should return [rev_type, rev]
         if self._landing_revision:
             _rev_info = self._landing_revision.split(':')
             if len(_rev_info) < 2:
                 _rev_info.insert(0, 'rev')
             return [_rev_info[0], _rev_info[1]]
         return [None, None]
     @landing_rev.setter
     def landing_rev(self, val):
         if ':' not in val:
             raise ValueError('value must be delimited with `:` and consist '
                              'of <rev_type>:<rev>, got %s instead' % val)
         self._landing_revision = val
     @hybrid_property
     def changeset_cache(self):
         try:
             cs_cache = json.loads(self._changeset_cache) # might raise on bad data
             cs_cache['raw_id'] # verify data, raise exception on error
             return cs_cache
         except (TypeError, KeyError, ValueError):
             return EmptyChangeset().__json__()
     @changeset_cache.setter
     def changeset_cache(self, val):
         try:
             self._changeset_cache = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
     @classmethod
     def query(cls, sorted=False):
         """Add Repository-specific helpers for common query constructs.
         sorted: if True, apply the default ordering (name, case insensitive).
         """
         q = super(Repository, cls).query()
         if sorted:
             q = q.order_by(func.lower(Repository.repo_name))
         return q
     @classmethod
     def url_sep(cls):
         return URL_SEP
     @classmethod
     def normalize_repo_name(cls, repo_name):
         """
         Normalizes os specific repo_name to the format internally stored inside
         database using URL_SEP
         :param cls:
         :param repo_name:
         """
         return cls.url_sep().join(repo_name.split(os.sep))
     @classmethod
     def guess_instance(cls, value):
         return super(Repository, cls).guess_instance(value, Repository.get_by_repo_name)
     @classmethod
     def get_by_repo_name(cls, repo_name, case_insensitive=False):
         """Get the repo, defaulting to database case sensitivity.
         case_insensitive will be slower and should only be specified if necessary."""
         if case_insensitive:
             q = Session().query(cls).filter(func.lower(cls.repo_name) == func.lower(repo_name))
         else:
             q = Session().query(cls).filter(cls.repo_name == repo_name)
         q = q.options(joinedload(Repository.fork)) \
                 .options(joinedload(Repository.owner)) \
                 .options(joinedload(Repository.group))
         return q.scalar()
     @classmethod
     def get_by_full_path(cls, repo_full_path):
         base_full_path = os.path.realpath(cls.base_path())
         repo_full_path = os.path.realpath(repo_full_path)
         assert repo_full_path.startswith(base_full_path + os.path.sep)
         repo_name = repo_full_path[len(base_full_path) + 1:]
         repo_name = cls.normalize_repo_name(repo_name)
         return cls.get_by_repo_name(repo_name.strip(URL_SEP))
     @classmethod
     def get_repo_forks(cls, repo_id):
         return cls.query().filter(Repository.fork_id == repo_id)
     @classmethod
     def base_path(cls):
         """
         Returns base path where all repos are stored
         :param cls:
         """
         q = Session().query(Ui) \
             .filter(Ui.ui_key == cls.url_sep())
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return q.one().ui_value
     @property
     def forks(self):
         """
         Return forks of this repo
         """
         return Repository.get_repo_forks(self.repo_id)
     @property
     def parent(self):
         """
         Returns fork parent
         """
         return self.fork
     @property
     def just_name(self):
         return self.repo_name.split(Repository.url_sep())[-1]
     @property
     def groups_with_parents(self):
         groups = []
         group = self.group
         while group is not None:
             groups.append(group)
             group = group.parent_group
             assert group not in groups, group # avoid recursion on bad db content
         groups.reverse()
         return groups
     @LazyProperty
     def repo_path(self):
         """
         Returns base full path for that repository means where it actually
         exists on a filesystem
         """
         q = Session().query(Ui).filter(Ui.ui_key ==
                                               Repository.url_sep())
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return q.one().ui_value
     @property
     def repo_full_path(self):
         p = [self.repo_path]
         # we need to split the name by / since this is how we store the
         # names in the database, but that eventually needs to be converted
         # into a valid system path
         p += self.repo_name.split(Repository.url_sep())
         return os.path.join(*map(safe_unicode, p))
     @property
     def cache_keys(self):
         """
         Returns associated cache keys for that repo
         """
         return CacheInvalidation.query() \
             .filter(CacheInvalidation.cache_args == self.repo_name) \
             .order_by(CacheInvalidation.cache_key) \
             .all()
     def get_new_name(self, repo_name):
         """
         returns new full repository name based on assigned group and new new
         :param group_name:
         """
         path_prefix = self.group.full_path_splitted if self.group else []
         return Repository.url_sep().join(path_prefix + [repo_name])
     @property
     def _ui(self):
         """
         Creates an db based ui object for this repository
         """
         from kallithea.lib.utils import make_ui
         return make_ui(clear_session=False)
     @classmethod
     def is_valid(cls, repo_name):
         """
         returns True if given repo name is a valid filesystem repository
         :param cls:
         :param repo_name:
         """
         from kallithea.lib.utils import is_valid_repo
         return is_valid_repo(repo_name, cls.base_path())
     def get_api_data(self, with_revision_names=False,
                            with_pullrequests=False):
         """
         Common function for generating repo api data.
         Optionally, also return tags, branches, bookmarks and PRs.
         """
         repo = self
         data = dict(
             repo_id=repo.repo_id,
             repo_name=repo.repo_name,
             repo_type=repo.repo_type,
             clone_uri=repo.clone_uri,
             private=repo.private,
             created_on=repo.created_on,
             description=repo.description,
             landing_rev=repo.landing_rev,
             owner=repo.owner.username,
             fork_of=repo.fork.repo_name if repo.fork else None,
             enable_statistics=repo.enable_statistics,
             enable_downloads=repo.enable_downloads,
             last_changeset=repo.changeset_cache,
+        )
         if with_revision_names:
             scm_repo = repo.scm_instance_no_cache()
             data.update(dict(
                 tags=scm_repo.tags,
                 branches=scm_repo.branches,
                 bookmarks=scm_repo.bookmarks,
             ))
         if with_pullrequests:
             data['pull_requests'] = repo.pull_requests_other
         rc_config = Setting.get_app_settings()
         repository_fields = str2bool(rc_config.get('repository_fields'))
         if repository_fields:
             for f in self.extra_fields:
                 data[f.field_key_prefixed] = f.field_value
         return data
     @property
     def last_db_change(self):
         return self.updated_on
     @property
     def clone_uri_hidden(self):
         clone_uri = self.clone_uri
         if clone_uri:
             import urlobject
             url_obj = urlobject.URLObject(self.clone_uri)
             if url_obj.password:
                 clone_uri = url_obj.with_password('*****')
         return clone_uri
     def clone_url(self, **override):
         import kallithea.lib.helpers as h
         qualified_home_url = h.canonical_url('home')
         uri_tmpl = None
         if 'with_id' in override:
             uri_tmpl = self.DEFAULT_CLONE_URI_ID
             del override['with_id']
         if 'uri_tmpl' in override:
             uri_tmpl = override['uri_tmpl']
             del override['uri_tmpl']
         # we didn't override our tmpl from **overrides
         if not uri_tmpl:
             uri_tmpl = self.DEFAULT_CLONE_URI
             try:
                 from tg import tmpl_context as c
                 uri_tmpl = c.clone_uri_tmpl
             except AttributeError:
                 # in any case if we call this outside of request context,
                 # ie, not having tmpl_context set up
                 pass
         return get_clone_url(uri_tmpl=uri_tmpl,
                              qualified_home_url=qualified_home_url,
                              repo_name=self.repo_name,
                              repo_id=self.repo_id, **override)
     def set_state(self, state):
         self.repo_state = state
     #==========================================================================
     # SCM PROPERTIES
     #==========================================================================
     def get_changeset(self, rev=None):
         return get_changeset_safe(self.scm_instance, rev)
     def get_landing_changeset(self):
         """
         Returns landing changeset, or if that doesn't exist returns the tip
         """
         _rev_type, _rev = self.landing_rev
         cs = self.get_changeset(_rev)
         if isinstance(cs, EmptyChangeset):
             return self.get_changeset()
         return cs
     def update_changeset_cache(self, cs_cache=None):
         """
         Update cache of last changeset for repository, keys should be::
             short_id
             raw_id
             revision
             message
             date
             author
         :param cs_cache:
         """
         from kallithea.lib.vcs.backends.base import BaseChangeset
         if cs_cache is None:
             cs_cache = EmptyChangeset()
             # use no-cache version here
             scm_repo = self.scm_instance_no_cache()
             if scm_repo:
                 cs_cache = scm_repo.get_changeset()
         if isinstance(cs_cache, BaseChangeset):
             cs_cache = cs_cache.__json__()
         if (not self.changeset_cache or cs_cache['raw_id'] != self.changeset_cache['raw_id']):
             _default = datetime.datetime.fromtimestamp(0)
             last_change = cs_cache.get('date') or _default
             log.debug('updated repo %s with new cs cache %s',
                       self.repo_name, cs_cache)
             self.updated_on = last_change
             self.changeset_cache = cs_cache
             Session().commit()
         else:
             log.debug('changeset_cache for %s already up to date with %s',
                       self.repo_name, cs_cache['raw_id'])
     @property
     def tip(self):
         return self.get_changeset('tip')
     @property
     def author(self):
         return self.tip.author
     @property
     def last_change(self):
         return self.scm_instance.last_change
     def get_comments(self, revisions=None):
         """
         Returns comments for this repository grouped by revisions
         :param revisions: filter query by revisions only
         """
         cmts = ChangesetComment.query() \
             .filter(ChangesetComment.repo == self)
         if revisions is not None:
             if not revisions:
                 return {} # don't use sql 'in' on empty set
             cmts = cmts.filter(ChangesetComment.revision.in_(revisions))
         grouped = collections.defaultdict(list)
         for cmt in cmts.all():
             grouped[cmt.revision].append(cmt)
         return grouped
     def statuses(self, revisions):
         """
         Returns statuses for this repository.
         PRs without any votes do _not_ show up as unreviewed.
         :param revisions: list of revisions to get statuses for
         """
         if not revisions:
             return {}
         statuses = ChangesetStatus.query() \
             .filter(ChangesetStatus.repo == self) \
             .filter(ChangesetStatus.version == 0) \
             .filter(ChangesetStatus.revision.in_(revisions))
         grouped = {}
         for stat in statuses.all():
             pr_id = pr_nice_id = pr_repo = None
             if stat.pull_request:
                 pr_id = stat.pull_request.pull_request_id
                 pr_nice_id = PullRequest.make_nice_id(pr_id)
                 pr_repo = stat.pull_request.other_repo.repo_name
             grouped[stat.revision] = [str(stat.status), stat.status_lbl,
                                       pr_id, pr_repo, pr_nice_id,
                                       stat.author]
         return grouped
     def _repo_size(self):
         from kallithea.lib import helpers as h
         log.debug('calculating repository size...')
         return h.format_byte_size(self.scm_instance.size)
     #==========================================================================
     # SCM CACHE INSTANCE
     #==========================================================================
     def set_invalidate(self):
         """
         Mark caches of this repo as invalid.
         """
         CacheInvalidation.set_invalidate(self.repo_name)
     _scm_instance = None
     @property
     def scm_instance(self):
         if self._scm_instance is None:
             self._scm_instance = self.scm_instance_cached()
         return self._scm_instance
     def scm_instance_cached(self, valid_cache_keys=None):
         @cache_region('long_term', 'scm_instance_cached')
         def _c(repo_name): # repo_name is just for the cache key
             log.debug('Creating new %s scm_instance and populating cache', repo_name)
             return self.scm_instance_no_cache()
         rn = self.repo_name
         valid = CacheInvalidation.test_and_set_valid(rn, None, valid_cache_keys=valid_cache_keys)
         if not valid:
             log.debug('Cache for %s invalidated, getting new object', rn)
             region_invalidate(_c, None, 'scm_instance_cached', rn)
         else:
             log.debug('Trying to get scm_instance of %s from cache', rn)
         return _c(rn)
     def scm_instance_no_cache(self):
         repo_full_path = safe_str(self.repo_full_path)
         alias = get_scm(repo_full_path)[0]
         log.debug('Creating instance of %s repository from %s',
                   alias, self.repo_full_path)
         backend = get_backend(alias)
         if alias == 'hg':
             repo = backend(repo_full_path, create=False,
                            baseui=self._ui)
         else:
             repo = backend(repo_full_path, create=False)
         return repo
     def __json__(self):
         return dict(
             repo_id=self.repo_id,
             repo_name=self.repo_name,
             landing_rev=self.landing_rev,
+        )
 class RepoGroup(Base, BaseDbModel):
     __tablename__ = 'groups'
     __table_args__ = (
         _table_args_default_dict,
+    )
     __mapper_args__ = {'order_by': 'group_name'} # TODO: Deprecated as of SQLAlchemy 1.1.
     SEP = ' &raquo; '
     group_id = Column(Integer(), primary_key=True)
     group_name = Column(Unicode(255), nullable=False, unique=True) # full path
     parent_group_id = Column('group_parent_id', Integer(), ForeignKey('groups.group_id'), nullable=True)
     group_description = Column(Unicode(10000), nullable=False)
     owner_id = Column('user_id', Integer(), ForeignKey('users.user_id'), nullable=False)
     created_on = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     repo_group_to_perm = relationship('UserRepoGroupToPerm', cascade='all', order_by='UserRepoGroupToPerm.group_to_perm_id')
     users_group_to_perm = relationship('UserGroupRepoGroupToPerm', cascade='all')
     parent_group = relationship('RepoGroup', remote_side=group_id)
     owner = relationship('User')
     @classmethod
     def query(cls, sorted=False):
         """Add RepoGroup-specific helpers for common query constructs.
         sorted: if True, apply the default ordering (name, case insensitive).
         """
         q = super(RepoGroup, cls).query()
         if sorted:
             q = q.order_by(func.lower(RepoGroup.group_name))
         return q
     def __init__(self, group_name='', parent_group=None):
         self.group_name = group_name
         self.parent_group = parent_group
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__, self.group_id,
                                       self.group_name)
     @classmethod
     def _generate_choice(cls, repo_group):
         """Return tuple with group_id and name as html literal"""
         from webhelpers.html import literal
         if repo_group is None:
             return (-1, u'-- %s --' % _('top level'))
         return repo_group.group_id, literal(cls.SEP.join(repo_group.full_path_splitted))
     @classmethod
     def groups_choices(cls, groups):
         """Return tuples with group_id and name as html literal."""
         return sorted((cls._generate_choice(g) for g in groups),
                       key=lambda c: c[1].split(cls.SEP))
     @classmethod
     def url_sep(cls):
         return URL_SEP
     @classmethod
     def guess_instance(cls, value):
         return super(RepoGroup, cls).guess_instance(value, RepoGroup.get_by_group_name)
     @classmethod
     def get_by_group_name(cls, group_name, cache=False, case_insensitive=False):
         group_name = group_name.rstrip('/')
         if case_insensitive:
             gr = cls.query() \
                 .filter(func.lower(cls.group_name) == func.lower(group_name))
         else:
             gr = cls.query() \
                 .filter(cls.group_name == group_name)
         if cache:
             gr = gr.options(FromCache(
                             "sql_cache_short",
                             "get_group_%s" % _hash_key(group_name)
+                            )
+            )
         return gr.scalar()
     @property
     def parents(self):
         groups = []
         group = self.parent_group
         while group is not None:
             groups.append(group)
             group = group.parent_group
             assert group not in groups, group # avoid recursion on bad db content
         groups.reverse()
         return groups
     @property
     def children(self):
         return RepoGroup.query().filter(RepoGroup.parent_group == self)
     @property
     def name(self):
         return self.group_name.split(RepoGroup.url_sep())[-1]
     @property
     def full_path(self):
         return self.group_name
     @property
     def full_path_splitted(self):
         return self.group_name.split(RepoGroup.url_sep())
     @property
     def repositories(self):
         return Repository.query(sorted=True).filter_by(group=self)
     @property
     def repositories_recursive_count(self):
         cnt = self.repositories.count()
         def children_count(group):
             cnt = 0
             for child in group.children:
                 cnt += child.repositories.count()
                 cnt += children_count(child)
             return cnt
         return cnt + children_count(self)
     def _recursive_objects(self, include_repos=True):
         all_ = []
         def _get_members(root_gr):
             if include_repos:
                 for r in root_gr.repositories:
                     all_.append(r)
             childs = root_gr.children.all()
             if childs:
                 for gr in childs:
                     all_.append(gr)
                     _get_members(gr)
         _get_members(self)
         return [self] + all_
     def recursive_groups_and_repos(self):
         """
         Recursive return all groups, with repositories in those groups
         """
         return self._recursive_objects()
     def recursive_groups(self):
         """
         Returns all children groups for this group including children of children
         """
         return self._recursive_objects(include_repos=False)
     def get_new_name(self, group_name):
         """
         returns new full group name based on parent and new name
         :param group_name:
         """
         path_prefix = (self.parent_group.full_path_splitted if
                        self.parent_group else [])
         return RepoGroup.url_sep().join(path_prefix + [group_name])
     def get_api_data(self):
         """
         Common function for generating api data
         """
         group = self
         data = dict(
             group_id=group.group_id,
             group_name=group.group_name,
             group_description=group.group_description,
             parent_group=group.parent_group.group_name if group.parent_group else None,
             repositories=[x.repo_name for x in group.repositories],
             owner=group.owner.username
+        )
         return data
 class Permission(Base, BaseDbModel):
     __tablename__ = 'permissions'
     __table_args__ = (
         Index('p_perm_name_idx', 'permission_name'),
         _table_args_default_dict,
+    )
     PERMS = (
         ('hg.admin', _('Kallithea Administrator')),
         ('repository.none', _('Default user has no access to new repositories')),
         ('repository.read', _('Default user has read access to new repositories')),
         ('repository.write', _('Default user has write access to new repositories')),
         ('repository.admin', _('Default user has admin access to new repositories')),
         ('group.none', _('Default user has no access to new repository groups')),
         ('group.read', _('Default user has read access to new repository groups')),
         ('group.write', _('Default user has write access to new repository groups')),
         ('group.admin', _('Default user has admin access to new repository groups')),
         ('usergroup.none', _('Default user has no access to new user groups')),
         ('usergroup.read', _('Default user has read access to new user groups')),
         ('usergroup.write', _('Default user has write access to new user groups')),
         ('usergroup.admin', _('Default user has admin access to new user groups')),
         ('hg.repogroup.create.false', _('Only admins can create repository groups')),
         ('hg.repogroup.create.true', _('Non-admins can create repository groups')),
         ('hg.usergroup.create.false', _('Only admins can create user groups')),
         ('hg.usergroup.create.true', _('Non-admins can create user groups')),
         ('hg.create.none', _('Only admins can create top level repositories')),
         ('hg.create.repository', _('Non-admins can create top level repositories')),
         ('hg.create.write_on_repogroup.true', _('Repository creation enabled with write permission to a repository group')),
         ('hg.create.write_on_repogroup.false', _('Repository creation disabled with write permission to a repository group')),
         ('hg.fork.none', _('Only admins can fork repositories')),
         ('hg.fork.repository', _('Non-admins can fork repositories')),
         ('hg.register.none', _('Registration disabled')),
         ('hg.register.manual_activate', _('User registration with manual account activation')),
         ('hg.register.auto_activate', _('User registration with automatic account activation')),
         ('hg.extern_activate.manual', _('Manual activation of external account')),
         ('hg.extern_activate.auto', _('Automatic activation of external account')),
+    )
     # definition of system default permissions for DEFAULT user
     DEFAULT_USER_PERMISSIONS = (
         'repository.read',
         'group.read',
         'usergroup.read',
         'hg.create.repository',
         'hg.create.write_on_repogroup.true',
         'hg.fork.repository',
         'hg.register.manual_activate',
         'hg.extern_activate.auto',
+    )
     # defines which permissions are more important higher the more important
     # Weight defines which permissions are more important.
     # The higher number the more important.
     PERM_WEIGHTS = {
         'repository.none': 0,
         'repository.read': 1,
         'repository.write': 3,
         'repository.admin': 4,
         'group.none': 0,
         'group.read': 1,
         'group.write': 3,
         'group.admin': 4,
         'usergroup.none': 0,
         'usergroup.read': 1,
         'usergroup.write': 3,
         'usergroup.admin': 4,
         'hg.repogroup.create.false': 0,
         'hg.repogroup.create.true': 1,
         'hg.usergroup.create.false': 0,
         'hg.usergroup.create.true': 1,
         'hg.fork.none': 0,
         'hg.fork.repository': 1,
         'hg.create.none': 0,
         'hg.create.repository': 1,
         'hg.create.write_on_repogroup.false': 0,
         'hg.create.write_on_repogroup.true': 1,
         'hg.register.none': 0,
         'hg.register.manual_activate': 1,
         'hg.register.auto_activate': 2,
         'hg.extern_activate.manual': 0,
         'hg.extern_activate.auto': 1,
+    }
     permission_id = Column(Integer(), primary_key=True)
     permission_name = Column(String(255), nullable=False)
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (
             self.__class__.__name__, self.permission_id, self.permission_name
+        )
     @classmethod
     def guess_instance(cls, value):
         return super(Permission, cls).guess_instance(value, Permission.get_by_key)
     @classmethod
     def get_by_key(cls, key):
         return cls.query().filter(cls.permission_name == key).scalar()
     @classmethod
     def get_default_perms(cls, default_user_id):
         q = Session().query(UserRepoToPerm, Repository, cls) \
          .join((Repository, UserRepoToPerm.repository_id == Repository.repo_id)) \
          .join((cls, UserRepoToPerm.permission_id == cls.permission_id)) \
          .filter(UserRepoToPerm.user_id == default_user_id)
         return q.all()
     @classmethod
     def get_default_group_perms(cls, default_user_id):
         q = Session().query(UserRepoGroupToPerm, RepoGroup, cls) \
          .join((RepoGroup, UserRepoGroupToPerm.group_id == RepoGroup.group_id)) \
          .join((cls, UserRepoGroupToPerm.permission_id == cls.permission_id)) \
          .filter(UserRepoGroupToPerm.user_id == default_user_id)
         return q.all()
     @classmethod
     def get_default_user_group_perms(cls, default_user_id):
         q = Session().query(UserUserGroupToPerm, UserGroup, cls) \
          .join((UserGroup, UserUserGroupToPerm.user_group_id == UserGroup.users_group_id)) \
          .join((cls, UserUserGroupToPerm.permission_id == cls.permission_id)) \
          .filter(UserUserGroupToPerm.user_id == default_user_id)
         return q.all()
 class UserRepoToPerm(Base, BaseDbModel):
     __tablename__ = 'repo_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'repository_id', 'permission_id'),
         _table_args_default_dict,
+    )
     repo_to_perm_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     user = relationship('User')
     repository = relationship('Repository')
     permission = relationship('Permission')
     @classmethod
     def create(cls, user, repository, permission):
         n = cls()
         n.user = user
         n.repository = repository
         n.permission = permission
         Session().add(n)
         return n
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.repository)
 class UserUserGroupToPerm(Base, BaseDbModel):
     __tablename__ = 'user_user_group_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'user_group_id', 'permission_id'),
         _table_args_default_dict,
+    )
     user_user_group_to_perm_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     user_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     user = relationship('User')
     user_group = relationship('UserGroup')
     permission = relationship('Permission')
     @classmethod
     def create(cls, user, user_group, permission):
         n = cls()
         n.user = user
         n.user_group = user_group
         n.permission = permission
         Session().add(n)
         return n
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.user_group)
 class UserToPerm(Base, BaseDbModel):
     __tablename__ = 'user_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'permission_id'),
         _table_args_default_dict,
+    )
     user_to_perm_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     user = relationship('User')
     permission = relationship('Permission')
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.permission)
 class UserGroupRepoToPerm(Base, BaseDbModel):
     __tablename__ = 'users_group_repo_to_perm'
     __table_args__ = (
         UniqueConstraint('repository_id', 'users_group_id', 'permission_id'),
         _table_args_default_dict,
+    )
     users_group_to_perm_id = Column(Integer(), primary_key=True)
     users_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
     repository = relationship('Repository')
     @classmethod
     def create(cls, users_group, repository, permission):
         n = cls()
         n.users_group = users_group
         n.repository = repository
         n.permission = permission
         Session().add(n)
         return n
     def __unicode__(self):
         return u'<UserGroupRepoToPerm:%s => %s >' % (self.users_group, self.repository)
 class UserGroupUserGroupToPerm(Base, BaseDbModel):
     __tablename__ = 'user_group_user_group_to_perm'
     __table_args__ = (
         UniqueConstraint('target_user_group_id', 'user_group_id', 'permission_id'),
         _table_args_default_dict,
+    )
     user_group_user_group_to_perm_id = Column(Integer(), primary_key=True)
     target_user_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     user_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     target_user_group = relationship('UserGroup', primaryjoin='UserGroupUserGroupToPerm.target_user_group_id==UserGroup.users_group_id')
     user_group = relationship('UserGroup', primaryjoin='UserGroupUserGroupToPerm.user_group_id==UserGroup.users_group_id')
     permission = relationship('Permission')
     @classmethod
     def create(cls, target_user_group, user_group, permission):
         n = cls()
         n.target_user_group = target_user_group
         n.user_group = user_group
         n.permission = permission
         Session().add(n)
         return n
     def __unicode__(self):
         return u'<UserGroupUserGroup:%s => %s >' % (self.target_user_group, self.user_group)
 class UserGroupToPerm(Base, BaseDbModel):
     __tablename__ = 'users_group_to_perm'
     __table_args__ = (
         UniqueConstraint('users_group_id', 'permission_id',),
         _table_args_default_dict,
+    )
     users_group_to_perm_id = Column(Integer(), primary_key=True)
     users_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
 class UserRepoGroupToPerm(Base, BaseDbModel):
     __tablename__ = 'user_repo_group_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'group_id', 'permission_id'),
         _table_args_default_dict,
+    )
     group_to_perm_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     group_id = Column(Integer(), ForeignKey('groups.group_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     user = relationship('User')
     group = relationship('RepoGroup')
     permission = relationship('Permission')
     @classmethod
     def create(cls, user, repository_group, permission):
         n = cls()
         n.user = user
         n.group = repository_group
         n.permission = permission
         Session().add(n)
         return n
 class UserGroupRepoGroupToPerm(Base, BaseDbModel):
     __tablename__ = 'users_group_repo_group_to_perm'
     __table_args__ = (
         UniqueConstraint('users_group_id', 'group_id'),
         _table_args_default_dict,
+    )
     users_group_repo_group_to_perm_id = Column(Integer(), primary_key=True)
     users_group_id = Column(Integer(), ForeignKey('users_groups.users_group_id'), nullable=False)
     group_id = Column(Integer(), ForeignKey('groups.group_id'), nullable=False)
     permission_id = Column(Integer(), ForeignKey('permissions.permission_id'), nullable=False)
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
     group = relationship('RepoGroup')
     @classmethod
     def create(cls, user_group, repository_group, permission):
         n = cls()
         n.users_group = user_group
         n.group = repository_group
         n.permission = permission
         Session().add(n)
         return n
 class Statistics(Base, BaseDbModel):
     __tablename__ = 'statistics'
     __table_args__ = (
          _table_args_default_dict,
+    )
     stat_id = Column(Integer(), primary_key=True)
     repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=True)
     stat_on_revision = Column(Integer(), nullable=False)
     commit_activity = Column(LargeBinary(1000000), nullable=False) # JSON data
     commit_activity_combined = Column(LargeBinary(), nullable=False) # JSON data
     languages = Column(LargeBinary(1000000), nullable=False) # JSON data
     repository = relationship('Repository', single_parent=True)
 class UserFollowing(Base, BaseDbModel):
     __tablename__ = 'user_followings'
     __table_args__ = (
         UniqueConstraint('user_id', 'follows_repository_id', name='uq_user_followings_user_repo'),
         UniqueConstraint('user_id', 'follows_user_id', name='uq_user_followings_user_user'),
         _table_args_default_dict,
+    )
     user_following_id = Column(Integer(), primary_key=True)
     user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=False)
     follows_repository_id = Column(Integer(), ForeignKey('repositories.repo_id'), nullable=True)
     follows_user_id = Column(Integer(), ForeignKey('users.user_id'), nullable=True)
     follows_from = Column(DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     user = relationship('User', primaryjoin='User.user_id==UserFollowing.user_id')
     follows_user = relationship('User', primaryjoin='User.user_id==UserFollowing.follows_user_id')
     follows_repository = relationship('Repository', order_by=lambda: func.lower(Repository.repo_name))
     @classmethod
     def get_repo_followers(cls, repo_id):
         return cls.query().filter(cls.follows_repository_id == repo_id)
 class CacheInvalidation(Base, BaseDbModel):
     __tablename__ = 'cache_invalidation'
     __table_args__ = (
         Index('key_idx', 'cache_key'),
         _table_args_default_dict,
+    )
     # cache_id, not used
     cache_id = Column(Integer(), primary_key=True)
     # cache_key as created by _get_cache_key
     cache_key = Column(Unicode(255), nullable=False, unique=True)
     # cache_args is a repo_name
     cache_args = Column(Unicode(255), nullable=False)
     # instance sets cache_active True when it is caching, other instances set
     # cache_active to False to indicate that this cache is invalid
     cache_active = Column(Boolean(), nullable=False, default=False)
     def __init__(self, cache_key, repo_name=''):
         self.cache_key = cache_key
         self.cache_args = repo_name
         self.cache_active = False
     def __unicode__(self):
         return u"<%s('%s:%s[%s]')>" % (
             self.__class__.__name__,
             self.cache_id, self.cache_key, self.cache_active)
     def _cache_key_partition(self):
         prefix, repo_name, suffix = self.cache_key.partition(self.cache_args)
         return prefix, repo_name, suffix
     def get_prefix(self):
         """
         get prefix that might have been used in _get_cache_key to
         generate self.cache_key. Only used for informational purposes
         in repo_edit.html.
         """
         # prefix, repo_name, suffix
         return self._cache_key_partition()[0]
     def get_suffix(self):
         """
         get suffix that might have been used in _get_cache_key to
         generate self.cache_key. Only used for informational purposes
         in repo_edit.html.
         """
         # prefix, repo_name, suffix
         return self._cache_key_partition()[2]
     @classmethod
     def clear_cache(cls):
         """
         Delete all cache keys from database.
         Should only be run when all instances are down and all entries thus stale.
         """
         cls.query().delete()
         Session().commit()
     @classmethod
     def _get_cache_key(cls, key):
         """
         Wrapper for generating a unique cache key for this instance and "key".
         key must / will start with a repo_name which will be stored in .cache_args .
         """
         import kallithea
         prefix = kallithea.CONFIG.get('instance_id', '')
         return "%s%s" % (prefix, key)
     @classmethod
     def set_invalidate(cls, repo_name):
         """
         Mark all caches of a repo as invalid in the database.
         """
         inv_objs = Session().query(cls).filter(cls.cache_args == repo_name).all()
         log.debug('for repo %s got %s invalidation objects',
                   safe_str(repo_name), inv_objs)
         for inv_obj in inv_objs:
             log.debug('marking %s key for invalidation based on repo_name=%s',
                       inv_obj, safe_str(repo_name))
             Session().delete(inv_obj)
         Session().commit()
     @classmethod
     def test_and_set_valid(cls, repo_name, kind, valid_cache_keys=None):
         """
         Mark this cache key as active and currently cached.
         Return True if the existing cache registration still was valid.
         Return False to indicate that it had been invalidated and caches should be refreshed.
         """
         key = (repo_name + '_' + kind) if kind else repo_name
         cache_key = cls._get_cache_key(key)
         if valid_cache_keys and cache_key in valid_cache_keys:
             return True
         inv_obj = cls.query().filter(cls.cache_key == cache_key).scalar()
         if inv_obj is None:
             inv_obj = cls(cache_key, repo_name)
             Session().add(inv_obj)
         elif inv_obj.cache_active:
             return True
         inv_obj.cache_active = True

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