permission.backends.permission_backend: 22 total statements, 75.0% covered

Generated: Thu 2012-03-01 14:22 CST

Source file: /home/alisue/Dropbox/Codes/django-permission/permission/backends/permission_backend.py

Stats: 15 executed, 5 missed, 2 excluded, 65 ignored

1. # vim: set fileencoding=utf-8 :
2. """
3. Authentication backends for checking permissions
5. Method:
6. get_permission_handler
7. get permission handler of the model from registry
9. Class:
10. PermissionBackend
11. Authentication backend for checking permissions
14. AUTHOR:
15. lambdalisue[Ali su ae] (lambdalisue@hashnote.net)
17. License:
18. The MIT License (MIT)
20. Copyright (c) 2012 Alisue allright reserved.
22. Permission is hereby granted, free of charge, to any person obtaining a copy
23. of this software and associated documentation files (the "Software"), to
24. deal in the Software without restriction, including without limitation the
25. rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
26. sell copies of the Software, and to permit persons to whom the Software is
27. furnished to do so, subject to the following conditions:
29. The above copyright notice and this permission notice shall be included in
30. all copies or substantial portions of the Software.
32. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
33. IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
34. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
35. AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
36. LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
37. FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
38. IN THE SOFTWARE.
40. """
41. from __future__ import with_statement
43. from permission.handlers import registry
45. __all__ = ('PermissionBackend',)
48. class PermissionBackend(object):
49. """Authentication backend for cheking permissions
51. This backend is used to check permissions. The permissions
52. are handled with ``PermissionHandler`` which have to be registered in
53. ``fluidpermission.handlers.registry`` before use.
55. ``has_perm(user_obj, perm, obj=None)`` method of detected model's
56. ``PermissionHandler`` will be used to cheking process.
58. If no model was detected or no handler was registered, this backend
59. does not touch that permission and return ``None`` to pass the permission
60. checking process to downstream backends.
62. """
63. supports_object_permissions = True
64. supports_anonymous_user = True
65. supports_inactive_user = True
67. def authenticate(self, username, password):
68. """This backend is only for checking permission"""
69. return None
71. def has_perm(self, user_obj, perm, obj=None):
72. """check permission"""
73. # get permission handlers fot this perm
74. handlers = registry.get_handlers(perm)
75. for handler in handlers:
76. if handler.has_perm(user_obj, perm, obj=obj):
77. return True
78. # do not touch this permission
79. return False
81. def has_module_perms(self, user_obj, app_label):
82. # get permission handlers fot this perm
83. handlers = registry.get_module_handlers(app_label)
84. for handler in handlers:
85. if handler.has_module_perms(user_obj, app_label):
86. return True
87. return False