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7227
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leinfelder
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/**
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* Use parts of this script to judiciously remove/update denyFirst access rules before upgrading to Metacat 2.0.0
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* It is important to examine the access blocks that use denyFirst to be sure that you do not end up granting access to
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* members of groups who should not have access to objects that their group might have access to.
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* The default behavior for Metacat is to deny public access when it is not explicitly listed as allowed, therefore "deny public" rules are
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* superfluous.
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*/
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-- Analyze the number of rules that need to be addressed:
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select principal_name, perm_type, count(*)
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from xml_access
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where perm_order = 'denyFirst'
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and perm_type = 'deny'
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and principal_name != 'public'
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group by principal_name, perm_type;
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-- Look at the complete set of records for anything that might need special attention
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-- Pay special attention to group names where it makes the most sense to use a denyFirst policy
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select * from xml_access
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where docid in (select docid from xml_access where perm_order = 'denyFirst' and perm_type = 'deny' and principal_name != 'public')
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order by docid, principal_name, permission;
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-- Then do these steps to update rules to use allowFirst only
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-- 1a.) Look at the unnecessary public deny rules:
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select count(*)
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from xml_access
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where perm_order = 'denyFirst'
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and perm_type = 'deny'
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and principal_name = 'public';
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-- 1b.) Delete the unnecessary public deny rules (this is implicit behavior):
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delete from xml_access
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where perm_order = 'denyFirst'
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and perm_type = 'deny'
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and principal_name = 'public';
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-- 2a.) Examine the non-public deny rules for anything special:
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select *
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from xml_access
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where perm_order = 'denyFirst'
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and perm_type = 'deny'
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and principal_name != 'public';
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-- 2b.) Delete the non-public deny rules (after examining them!):
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delete from xml_access
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where perm_order = 'denyFirst'
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and perm_type = 'deny'
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and principal_name != 'public';
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-- 3a.) Summary of denyFirst rules
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select perm_type, count(*)
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from xml_access
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where perm_order = 'denyFirst'
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group by perm_type;
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-- 3b.) Update all denyFirst rules to be allowFirst
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update xml_access
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set perm_order = 'allowFirst'
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where perm_order = 'denyFirst';
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