XMLAccessControl
- Rod Widdowson
- Scott Cantor
The <AccessControl> element is the root of an XML-based access control policy that prevents access to a resource unless the user's session satisfies the policy. It's a simple, boolean-capable language provided as an example of how to implement an access control plugin.
Child Elements
Any one (and only one) of the following elements can appear:
Name | Cardinality | Description |
|---|---|---|
<Rule> | A single access rule to enforce. | |
A single regular expression access rule to enforce. | ||
<OR> | Exactly one | An operator for combining any number of rules or operators with a disjunction. |
<AND> | An operator for combining any number of rules or operators with a conjunction. | |
<NOT> | An operator for reversing the meaning of a single rule or operator. |
Examples
The basic example below would enforce a policy that the user logged in and supplied a SAML authn context class for a hardware token:
<!-- Inside surrounding RequestMap... -->
<Path name="secure">
<AccessControl>
<Rule require="authnContextClassRef">urn:oasis:names:tc:SAML:2.0:ac:classes:TimeSyncToken</Rule>
</AccessControl>
</Path>The more complex example below would enforce a policy that allows only Ohio State faculty or students, other than a single blacklisted person, if they have authenticated with a password or a time-synchronized token.
<!-- Inside surrounding RequestMap... -->
<Path name="secure">
<AccessControl>
<AND>
<Rule require="affiliation">faculty@osu.edu student@osu.edu</Rule>
<NOT>
<Rule require="user">cantor.2@osu.edu</Rule>
</NOT>
<OR>
<Rule require="authnContextClassRef">urn:oasis:names:tc:SAML:2.0:ac:classes:Password</Rule>
<Rule require="authnContextClassRef">urn:oasis:names:tc:SAML:2.0:ac:classes:TimeSyncToken</Rule>
</OR>
</AND>
</AccessControl>
</Path>