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Fix the authorizer so that it correctly interprets attempts to read the

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OLD and NEW pseudo-tables of a trigger. (CVS 911)

FossilOrigin-Name: f04bd43254b3ba3fccc842214115d4c298e28138
This commit is contained in:
drh
2003-04-16 20:24:52 +00:00
parent bb07e9a34f
commit 027850b676
5 changed files with 61 additions and 16 deletions
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22
src/auth.c
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@@ -14,7 +14,7 @@
** systems that do not need this facility may omit it by recompiling
** the library with -DSQLITE_OMIT_AUTHORIZATION=1
**
** $Id: auth.c,v 1.4 2003/01/31 17:21:50 drh Exp $
** $Id: auth.c,v 1.5 2003/04/16 20:24:52 drh Exp $
*/
#include "sqliteInt.h"
@@ -91,12 +91,24 @@ void sqliteAuthRead(
){
sqlite *db = pParse->db;
int rc;
Table *pTab;
const char *zCol;
Table *pTab; /* The table being read */
const char *zCol; /* Name of the column of the table */
int iSrc; /* Index in pTabList->a[] of table being read */
if( db->xAuth==0 ) return;
assert( pExpr->op==TK_COLUMN );
assert( pExpr->iTable>=base && pExpr->iTable<base+pTabList->nSrc );
pTab = pTabList->a[pExpr->iTable-base].pTab;
iSrc = pExpr->iTable - base;
if( iSrc>=0 && iSrc<pTabList->nSrc ){
pTab = pTabList->a[iSrc].pTab;
}else{
/* This must be an attempt to read the NEW or OLD pseudo-tables
** of a trigger.
*/
TriggerStack *pStack = pParse->trigStack;
assert( pStack!=0 );
assert( pExpr->iTable==pStack->newIdx || pExpr->iTable==pStack->oldIdx );
pTab = pStack->pTab;
}
if( pTab==0 ) return;
if( pExpr->iColumn>=0 ){
assert( pExpr->iColumn<pTab->nCol );