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annotate roundup/security.py @ 2119:cc4667ef3f12

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Added the ability to toggle where error messages go. They either go to the user (default, for backwards compatibility), the dispatcher, or both. These are able to be toggled via settings in config.py. Please refer to upgrading.txt for more details. (And Richard, let me know if I've done anything wrong with this checkin. :))
author Eddie Parker <eparker@users.sourceforge.net>
date Thu, 25 Mar 2004 19:27:15 +0000
parents fc52d57c6c3e
children 1df7d4a41da4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2005
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1 """Handle the security declarations used in Roundup trackers.
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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
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15 The klass may be unset, indicating that this permission is not
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16 locked to a particular class. That means there may be multiple
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17 Permissions for the same name for different classes.
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18 '''
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19 def __init__(self, name='', description='', klass=None):
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20 self.name = name
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21 self.description = description
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22 self.klass = klass
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23
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24 def __repr__(self):
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25 return '<Permission 0x%x %r,%r>'%(id(self), self.name, self.klass)
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26
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27 class Role:
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28 ''' Defines a Role with the attributes
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29 - name
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30 - description
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31 - permissions
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32 '''
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33 def __init__(self, name='', description='', permissions=None):
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34 self.name = name.lower()
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35 self.description = description
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36 if permissions is None:
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37 permissions = []
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38 self.permissions = permissions
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39
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40 def __repr__(self):
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41 return '<Role 0x%x %r,%r>'%(id(self), self.name, self.permissions)
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42
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43 class Security:
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44 def __init__(self, db):
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45 ''' Initialise the permission and role classes, and add in the
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46 base roles (for admin user).
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47 '''
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48 self.db = weakref.proxy(db) # use a weak ref to avoid circularity
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49
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50 # permssions are mapped by name to a list of Permissions by class
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51 self.permission = {}
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52
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53 # roles are mapped by name to the Role
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54 self.role = {}
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55
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56 # the default Roles
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57 self.addRole(name="User", description="A regular user, no privs")
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58 self.addRole(name="Admin", description="An admin user, full privs")
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59 self.addRole(name="Anonymous", description="An anonymous user")
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60
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61 ee = self.addPermission(name="Edit",
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62 description="User may edit everthing")
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63 self.addPermissionToRole('Admin', ee)
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64 ae = self.addPermission(name="View",
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65 description="User may access everything")
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66 self.addPermissionToRole('Admin', ae)
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67 reg = self.addPermission(name="Register Web",
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68 description="User may register through the web")
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69 reg = self.addPermission(name="Register Email",
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70 description="User may register through the email")
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71
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72 # initialise the permissions and roles needed for the UIs
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73 from roundup.cgi import client
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74 client.initialiseSecurity(self)
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75 from roundup import mailgw
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76 mailgw.initialiseSecurity(self)
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77
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78 def getPermission(self, permission, classname=None):
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79 ''' Find the Permission matching the name and for the class, if the
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80 classname is specified.
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81
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82 Raise ValueError if there is no exact match.
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83 '''
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84 if not self.permission.has_key(permission):
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85 raise ValueError, 'No permission "%s" defined'%permission
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86
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87 # look through all the permissions of the given name
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88 for perm in self.permission[permission]:
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89 # if we're passed a classname, the permission must match
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90 if perm.klass is not None and perm.klass == classname:
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91 return perm
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92 # otherwise the permission klass must be unset
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93 elif not perm.klass and not classname:
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94 return perm
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95 raise ValueError, 'No permission "%s" defined for "%s"'%(permission,
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96 classname)
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97
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98 def hasPermission(self, permission, userid, classname=None):
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99 ''' Look through all the Roles, and hence Permissions, and see if
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100 "permission" is there for the specified classname.
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101 '''
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102 roles = self.db.user.get(userid, 'roles')
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103 if roles is None:
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104 return 0
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105 for rolename in [x.lower().strip() for x in roles.split(',')]:
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106 if not rolename or not self.role.has_key(rolename):
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107 continue
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108 # for each of the user's Roles, check the permissions
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109 for perm in self.role[rolename].permissions:
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110 # permission name match?
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111 if perm.name == permission:
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112 # permission klass match?
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113 if perm.klass is None or perm.klass == classname:
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114 # we have a winner
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115 return 1
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116 return 0
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117
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118 def hasNodePermission(self, classname, nodeid, **propspec):
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119 ''' Check the named properties of the given node to see if the
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120 userid appears in them. If it does, then the user is granted
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121 this permission check.
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122
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123 'propspec' consists of a set of properties and values that
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124 must be present on the given node for access to be granted.
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125
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126 If a property is a Link, the value must match the property
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127 value. If a property is a Multilink, the value must appear
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128 in the Multilink list.
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129 '''
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130 klass = self.db.getclass(classname)
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131 properties = klass.getprops()
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132 for k,v in propspec.items():
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133 value = klass.get(nodeid, k)
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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134 if isinstance(properties[k], hyperdb.Multilink):
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135 if v not in value:
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136 return 0
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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137 else:
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
Richard Jones <richard@users.sourceforge.net>
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138 if v != value:
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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139 return 0
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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140 return 1
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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141
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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142 def addPermission(self, **propspec):
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143 ''' 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>
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144 'propspec'
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145 '''
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
Richard Jones <richard@users.sourceforge.net>
parents: 905
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146 perm = Permission(**propspec)
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
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147 self.permission.setdefault(perm.name, []).append(perm)
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
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parents: 905
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148 return perm
902
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149
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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150 def addRole(self, **propspec):
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151 ''' Create a new Role with the properties defined in 'propspec'
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152 '''
908
a8d80ffe37cc Removed the unnecessary volatiledb and the related complications.
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153 role = Role(**propspec)
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154 self.role[role.name] = role
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155 return role
902
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156
908
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Richard Jones <richard@users.sourceforge.net>
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157 def addPermissionToRole(self, rolename, permission):
902
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158 ''' Add the permission to the role's permission list.
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159
908
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diff changeset
160 'rolename' is the name of the role to add the permission to.
902
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Richard Jones <richard@users.sourceforge.net>
parents:
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161 '''
1512
9b93d140b8e6 role names made case insensitive
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1218
diff changeset
162 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
163 role.permissions.append(permission)
902
b0d3d3535998 Bugger it. Here's the current shape of the new security implementation.
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164
1090
9b910e8d987d removed Log
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parents: 992
diff changeset
165 # vim: set filetype=python ts=4 sw=4 et si
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