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Fix permission-checking bug reported by Tim Burgess 10-Feb-03 (this time

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for sure...).  Rather than relying on the query context of a rangetable
entry to identify what permissions it wants checked, store a full AclMode
mask in each RTE, and check exactly those bits.  This allows an RTE
specifying, say, INSERT privilege on a view to be copied into a derived
UPDATE query without changing meaning.  Per recent discussion thread.
initdb forced due to change of stored rule representation.
This commit is contained in:
Tom Lane
2004-01-14 23:01:55 +00:00
parent 01d320d421
commit cfd7fb7ed4
18 changed files with 186 additions and 186 deletions
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12
src/backend/rewrite/rewriteHandler.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteHandler.c,v 1.132 2004/01/14 03:39:22 tgl Exp $
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteHandler.c,v 1.133 2004/01/14 23:01:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -655,13 +655,11 @@ ApplyRetrieveRule(Query *parsetree,
*/
subrte = rt_fetch(PRS2_OLD_VARNO, rule_action->rtable);
Assert(subrte->relid == relation->rd_id);
subrte->checkForRead = rte->checkForRead;
subrte->checkForWrite = rte->checkForWrite;
subrte->requiredPerms = rte->requiredPerms;
subrte->checkAsUser = rte->checkAsUser;
rte->checkForRead = false; /* no permission check on subquery itself */
rte->checkForWrite = false;
rte->checkAsUser = InvalidOid;
rte->requiredPerms = 0; /* no permission check on subquery itself */
rte->checkAsUser = 0;
/*
* FOR UPDATE of view?
@ -713,7 +711,7 @@ markQueryForUpdate(Query *qry, bool skipOldNew)
{
if (!intMember(rti, qry->rowMarks))
qry->rowMarks = lappendi(qry->rowMarks, rti);
rte->checkForWrite = true;
rte->requiredPerms |= ACL_SELECT_FOR_UPDATE;
}
else if (rte->rtekind == RTE_SUBQUERY)
{