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Overview
| Comment: | Invoke the SQLITE_READ authorizer callback with a NULL column name for any table referenced by a query but from when no columns are extracted. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
92ab1f7257d2866c69eaaf4cf8599067 |
| User & Date: | drh 2017-05-10 16:12:00 |
Context
|
2017-05-10
| ||
| 16:33 | Improved documentation for the SQLITE_READ authorizer callback. No code changes. check-in: 92c5ea70 user: drh tags: trunk | |
| 16:12 | Invoke the SQLITE_READ authorizer callback with a NULL column name for any table referenced by a query but from when no columns are extracted. check-in: 92ab1f72 user: drh tags: trunk | |
| 13:36 | Fix a couple of test scripts so that they work with -DSQLITE_DISABLE_FTS4_DEFERRED builds. check-in: 30018d31 user: dan tags: trunk | |
Changes
Changes to src/select.c.
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SELECTTRACE(1,pParse,p,("end compound-select processing\n"));
pParse->nSelectIndent--;
#endif
return rc;
}
#endif
/* Generate code for all sub-queries in the FROM clause
*/
#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
for(i=0; i<pTabList->nSrc; i++){
struct SrcList_item *pItem = &pTabList->a[i];
SelectDest dest;
Select *pSub = pItem->pSelect;
if( pSub==0 ) continue;
/* Sometimes the code for a subquery will be generated more than
** once, if the subquery is part of the WHERE clause in a LEFT JOIN,
** for example. In that case, do not regenerate the code to manifest
** a view or the co-routine to implement a view. The first instance
** is sufficient, though the subroutine to manifest the view does need
................................................................................
retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
VdbeComment((v, "end %s", pItem->pTab->zName));
sqlite3VdbeChangeP1(v, topAddr, retAddr);
sqlite3ClearTempRegCache(pParse);
}
if( db->mallocFailed ) goto select_end;
pParse->nHeight -= sqlite3SelectExprHeight(p);
}
#endif
/* Various elements of the SELECT copied into local variables for
** convenience */
pEList = p->pEList;
pWhere = p->pWhere;
pGroupBy = p->pGroupBy;
pHaving = p->pHaving;
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SELECTTRACE(1,pParse,p,("end compound-select processing\n"));
pParse->nSelectIndent--;
#endif
return rc;
}
#endif
/* For each term in the FROM clause, do two things:
** (1) Authorized unreferenced tables
** (2) Generate code for all sub-queries
*/
for(i=0; i<pTabList->nSrc; i++){
struct SrcList_item *pItem = &pTabList->a[i];
SelectDest dest;
Select *pSub;
/* Issue SQLITE_READ authorizations with a NULL column name for any tables that
** are referenced but from which no values are extracted. Examples of where these
** kinds of null SQLITE_READ authorizations would occur:
**
** SELECT count(*) FROM t1; -- SQLITE_READ t1 null
** SELECT t1.* FROM t1, t2; -- SQLITE_READ t2 null
*/
if( pItem->colUsed==0 ){
sqlite3AuthCheck(pParse, SQLITE_READ, pItem->zName, pItem->zDatabase, 0);
}
#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
/* Generate code for all sub-queries in the FROM clause
*/
pSub = pItem->pSelect;
if( pSub==0 ) continue;
/* Sometimes the code for a subquery will be generated more than
** once, if the subquery is part of the WHERE clause in a LEFT JOIN,
** for example. In that case, do not regenerate the code to manifest
** a view or the co-routine to implement a view. The first instance
** is sufficient, though the subroutine to manifest the view does need
................................................................................
retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
VdbeComment((v, "end %s", pItem->pTab->zName));
sqlite3VdbeChangeP1(v, topAddr, retAddr);
sqlite3ClearTempRegCache(pParse);
}
if( db->mallocFailed ) goto select_end;
pParse->nHeight -= sqlite3SelectExprHeight(p);
#endif
}
/* Various elements of the SELECT copied into local variables for
** convenience */
pEList = p->pEList;
pWhere = p->pWhere;
pGroupBy = p->pGroupBy;
pHaving = p->pHaving;
|
Changes to test/auth.test.
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set ::authargs
} [list \
SQLITE_SELECT {} {} {} {} \
SQLITE_READ t7 a main {} \
SQLITE_READ t7 c main {} \
]
rename proc {}
rename proc_real proc
finish_test
|
> > > > > > > > > > > > > > > > > > > > > > > |
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set ::authargs
} [list \
SQLITE_SELECT {} {} {} {} \
SQLITE_READ t7 a main {} \
SQLITE_READ t7 c main {} \
]
# If a table is referenced but no columns are read from the table,
# that causes a single SQLITE_READ authorization with a NULL column
# name.
#
set ::authargs [list]
do_test auth-8.1 {
execsql {SELECT count(*) FROM t7}
set ::authargs
} [list \
SQLITE_SELECT {} {} {} {} \
SQLITE_FUNCTION {} count {} {} \
SQLITE_READ t7 {} {} {} \
]
set ::authargs [list]
do_test auth-8.2 {
execsql {SELECT t6.a FROM t6, t7}
set ::authargs
} [list \
SQLITE_SELECT {} {} {} {} \
SQLITE_READ t6 a main {} \
SQLITE_READ t7 {} {} {} \
]
rename proc {}
rename proc_real proc
finish_test
|