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annotate roundup/security.py @ 2806:845e87d5e3ba

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translator objects now have the following search path: - selected locale messages in the tracker locale dir - selected locale messages in the system locale dir - english messages in the tracker locale dir - english messages in the system locale dir automatically compile .mo files if needed (found .po file and .mo is missing or .po mtime is greater that .mo mtime) removed support for python < 2.0. gettext module is now required. get_translation: removed 'domain' argument, added 'tracker_home' argument
author Alexander Smishlajev <a1s@users.sourceforge.net>
date Sat, 23 Oct 2004 14:03:34 +0000
parents 673851f3fc0c
children 3f93d4b29620
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rev   line source
2005
fc52d57c6c3e documentation cleanup
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1 """Handle the security declarations used in Roundup trackers.
fc52d57c6c3e documentation cleanup
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2 """
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3 __docformat__ = 'restructuredtext'
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4
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5 import weakref
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6
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7 from roundup import hyperdb
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8
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9 class Permission:
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10 ''' Defines a Permission with the attributes
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11 - name
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12 - description
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13 - klass (optional)
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14 - property (optional)
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15 - check function (optional)
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16
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17 The klass may be unset, indicating that this permission is not
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18 locked to a particular class. That means there may be multiple
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19 Permissions for the same name for different classes.
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20
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21 If property name is set, permission is restricted to that
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22 property only.
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23
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24 If check function is set, permission is granted only when
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25 the function returns value interpreted as boolean true.
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26 The function is called with arguments db, userid, itemid.
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27 '''
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28 def __init__(self, name='', description='', klass=None,
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29 property=None, check=None):
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30 self.name = name
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31 self.description = description
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32 self.klass = klass
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33 self.property = property
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34 self.check = check
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35
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36 def test(self, db, permission, classname, property, userid, itemid):
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37 if permission != self.name:
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38 return 0
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39
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40 # are we checking the correct class
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41 if (classname is not None and self.klass is not None
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42 and self.klass != classname):
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43 return 0
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44
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45 # what about property?
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46 if (property is not None and self.property is not None
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47 and self.property != property):
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48 return 0
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49
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50 # check code
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51 if self.check is not None:
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52 if not self.check(db, userid, itemid):
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53 return 0
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54
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55 # we have a winner
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56 return 1
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57
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58 def __repr__(self):
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59 return '<Permission 0x%x %r,%r,%r,%r>'%(id(self), self.name,
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60 self.klass, self.property, self.check)
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61
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62 class Role:
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63 ''' Defines a Role with the attributes
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64 - name
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65 - description
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66 - permissions
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67 '''
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68 def __init__(self, name='', description='', permissions=None):
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69 self.name = name.lower()
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70 self.description = description
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71 if permissions is None:
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72 permissions = []
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73 self.permissions = permissions
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74
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75 def __repr__(self):
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76 return '<Role 0x%x %r,%r>'%(id(self), self.name, self.permissions)
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77
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78 class Security:
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79 def __init__(self, db):
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80 ''' Initialise the permission and role classes, and add in the
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81 base roles (for admin user).
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82 '''
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83 self.db = weakref.proxy(db) # use a weak ref to avoid circularity
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84
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85 # permssions are mapped by name to a list of Permissions by class
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86 self.permission = {}
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87
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88 # roles are mapped by name to the Role
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89 self.role = {}
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90
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91 # the default Roles
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92 self.addRole(name="User", description="A regular user, no privs")
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93 self.addRole(name="Admin", description="An admin user, full privs")
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94 self.addRole(name="Anonymous", description="An anonymous user")
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95
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96 ce = self.addPermission(name="Create",
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97 description="User may create everthing")
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98 self.addPermissionToRole('Admin', ce)
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99 ee = self.addPermission(name="Edit",
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100 description="User may edit everthing")
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101 self.addPermissionToRole('Admin', ee)
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102 ae = self.addPermission(name="View",
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103 description="User may access everything")
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104 self.addPermissionToRole('Admin', ae)
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105
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106 # initialise the permissions and roles needed for the UIs
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107 from roundup.cgi import client
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108 client.initialiseSecurity(self)
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109 from roundup import mailgw
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110 mailgw.initialiseSecurity(self)
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111
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112 def getPermission(self, permission, classname=None):
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113 ''' Find the Permission matching the name and for the class, if the
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114 classname is specified.
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115
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116 Raise ValueError if there is no exact match.
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117 '''
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118 if not self.permission.has_key(permission):
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119 raise ValueError, 'No permission "%s" defined'%permission
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120
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121 # look through all the permissions of the given name
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122 for perm in self.permission[permission]:
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123 # if we're passed a classname, the permission must match
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124 if perm.klass is not None and perm.klass == classname:
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125 return perm
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126 # otherwise the permission klass must be unset
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127 elif not perm.klass and not classname:
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128 return perm
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129 raise ValueError, 'No permission "%s" defined for "%s"'%(permission,
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130 classname)
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131
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132 def hasPermission(self, permission, userid, classname=None,
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133 property=None, itemid=None):
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parents:
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134 ''' Look through all the Roles, and hence Permissions, and see if
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135 "permission" is there for the specified classname.
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Richard Jones <richard@users.sourceforge.net>
parents:
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136 '''
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Richard Jones <richard@users.sourceforge.net>
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137 roles = self.db.user.get(userid, 'roles')
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502a5ae11cc5 Very close now. The cgi and mailgw now use the new security API.
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parents: 902
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138 if roles is None:
502a5ae11cc5 Very close now. The cgi and mailgw now use the new security API.
Richard Jones <richard@users.sourceforge.net>
parents: 902
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139 return 0
2649
1df7d4a41da4 Buncha stuff (sorry about the large checkin):
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
140 if itemid is not None and classname is None:
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Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
141 raise ValueError, 'classname must accompany itemid'
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c98d20ba4445 strip whitespace from Role names so "User, Admin" will work
Richard Jones <richard@users.sourceforge.net>
parents: 1512
diff changeset
142 for rolename in [x.lower().strip() for x in roles.split(',')]:
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4c9882cb16a3 more docco work
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parents: 1090
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143 if not rolename or not self.role.has_key(rolename):
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502a5ae11cc5 Very close now. The cgi and mailgw now use the new security API.
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parents: 902
diff changeset
144 continue
909
ef9c759c243e Fix to hasPermission, thanks Stefan Seefeld.
Richard Jones <richard@users.sourceforge.net>
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145 # for each of the user's Roles, check the permissions
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
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146 for perm in self.role[rolename].permissions:
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ef9c759c243e Fix to hasPermission, thanks Stefan Seefeld.
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parents: 908
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147 # permission name match?
2649
1df7d4a41da4 Buncha stuff (sorry about the large checkin):
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
148 if perm.test(self.db, permission, classname, property,
1df7d4a41da4 Buncha stuff (sorry about the large checkin):
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
149 userid, itemid):
1df7d4a41da4 Buncha stuff (sorry about the large checkin):
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
150 return 1
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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151 return 0
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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152
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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153 def hasNodePermission(self, classname, nodeid, **propspec):
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Richard Jones <richard@users.sourceforge.net>
parents:
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154 ''' Check the named properties of the given node to see if the
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
155 userid appears in them. If it does, then the user is granted
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
156 this permission check.
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
157
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
158 'propspec' consists of a set of properties and values that
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
159 must be present on the given node for access to be granted.
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
160
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
161 If a property is a Link, the value must match the property
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
162 value. If a property is a Multilink, the value must appear
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
163 in the Multilink list.
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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164 '''
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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165 klass = self.db.getclass(classname)
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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166 properties = klass.getprops()
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
167 for k,v in propspec.items():
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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168 value = klass.get(nodeid, k)
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
169 if isinstance(properties[k], hyperdb.Multilink):
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
170 if v not in value:
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
171 return 0
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
172 else:
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
173 if v != value:
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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174 return 0
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
175 return 1
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
176
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
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177 def addPermission(self, **propspec):
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
178 ''' Create a new Permission with the properties defined in
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
179 'propspec'
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
180 '''
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
181 perm = Permission(**propspec)
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
182 self.permission.setdefault(perm.name, []).append(perm)
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
183 return perm
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
184
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
185 def addRole(self, **propspec):
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
186 ''' Create a new Role with the properties defined in 'propspec'
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
187 '''
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
188 role = Role(**propspec)
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
189 self.role[role.name] = role
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
190 return role
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
191
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
192 def addPermissionToRole(self, rolename, permission):
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
193 ''' Add the permission to the role's permission list.
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
194
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
195 'rolename' is the name of the role to add the permission to.
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
196 '''
1512
9b93d140b8e6 role names made case insensitive
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1218
diff changeset
197 role = self.role[rolename.lower()]
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
diff changeset
198 role.permissions.append(permission)
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
199
2652
281beec48408 add note about new functionality to Permission class docstring;
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2649
diff changeset
200 # vim: set filetype=python sts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/