[FIX] base, auth_openid: wrong implementation of API by auth_openid

Authentication modules are supposed to override res_users.check_credentials()
in order to plug in their own mechanism, without actually modifying the
behavior of res_users.check(), res_users.authenticate() or
res_users._login().

auth_openid was incorrectly overriding check() instead of
check_credentials(), and unnecessarily accessing private
attributes of res_users. Fixing the implementation of auth_openid
to follow the API means we can completely make those attributes
private.

addons/auth_openid/res_users.py

@@ -73,22 +73,18 @@ class res_users(osv.osv):
                 cr.commit()
                 return res[0] if res else False
 
-    def check(self, db, uid, passwd):
+    def check_credentials(self, cr, uid, password):
         try:
-            return super(res_users, self).check(db, uid, passwd)
+            return super(res_users, self).check_credentials(cr, uid, password)
         except openerp.exceptions.AccessDenied:
-            if not passwd:
+            cr.execute('''SELECT COUNT(1)
+                            FROM res_users
+                           WHERE id=%s
+                             AND openid_key=%s
+                             AND active=%s''',
+                        (int(uid), passwd, True))
+            if not cr.fetchone()[0]:
                 raise
-            with RegistryManager.get(db).cursor() as cr:
-                cr.execute('''SELECT COUNT(1)
-                                FROM res_users
-                               WHERE id=%s
-                                 AND openid_key=%s
-                                 AND active=%s''',
-                            (int(uid), passwd, True))
-                if not cr.fetchone()[0]:
-                    raise
-                self._uid_cache.setdefault(db, {})[uid] = passwd
 
 res_users()
 

openerp/addons/base/res/res_users.py

@@ -136,7 +136,7 @@ class res_users(osv.osv):
         avatar, ... The user model is now dedicated to technical data.
     """
     __admin_ids = {}
-    _uid_cache = {}
+    __uid_cache = {}
     _inherits = {
         'res.partner': 'partner_id',
     }
@@ -336,10 +336,10 @@ class res_users(osv.osv):
         clear = partial(self.pool.get('ir.rule').clear_cache, cr)
         map(clear, ids)
         db = cr.dbname
-        if db in self._uid_cache:
+        if db in self.__uid_cache:
             for id in ids:
-                if id in self._uid_cache[db]:
+                if id in self.__uid_cache[db]:
-                    del self._uid_cache[db][id]
+                    del self.__uid_cache[db][id]
         self.context_get.clear_cache(self)
         return res
 
@@ -347,10 +347,10 @@ class res_users(osv.osv):
         if 1 in ids:
             raise osv.except_osv(_('Can not remove root user!'), _('You can not remove the admin user as it is used internally for resources created by OpenERP (updates, module installation, ...)'))
         db = cr.dbname
-        if db in self._uid_cache:
+        if db in self.__uid_cache:
             for id in ids:
-                if id in self._uid_cache[db]:
+                if id in self.__uid_cache[db]:
-                    del self._uid_cache[db][id]
+                    del self.__uid_cache[db][id]
         return super(res_users, self).unlink(cr, uid, ids, context=context)
 
     def name_search(self, cr, user, name='', args=None, operator='ilike', context=None, limit=100):
@@ -491,15 +491,12 @@ class res_users(osv.osv):
         if not passwd:
             # empty passwords disallowed for obvious security reasons
             raise openerp.exceptions.AccessDenied()
-        if self._uid_cache.get(db, {}).get(uid) == passwd:
+        if self.__uid_cache.setdefault(db, {}).get(uid) == passwd:
             return
         cr = pooler.get_db(db).cursor()
         try:
             self.check_credentials(cr, uid, passwd)
-            if self._uid_cache.has_key(db):
+            self.__uid_cache[db][uid] = passwd
-                self._uid_cache[db][uid] = passwd
-            else:
-                self._uid_cache[db] = {uid:passwd}
         finally:
             cr.close()