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Overview
| Comment: | Avoid deferencing a freed pointer following an OOM or SQLITE_CORRUPT error in the fts3 xDestroy method. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 505ed9a47825240979338a2404455961 |
| User & Date: | dan 2019-01-21 17:57:31 |
Context
|
2019-01-21
| ||
| 23:18 | Enhance the btree search routine so that it does early detection of impossibly large keys and thereby avoids a large malloc() call. check-in: 3ecaaee6 user: drh tags: trunk | |
| 17:57 | Avoid deferencing a freed pointer following an OOM or SQLITE_CORRUPT error in the fts3 xDestroy method. check-in: 505ed9a4 user: dan tags: trunk | |
| 16:12 | Remove a faulty assert() from fts3. check-in: 6c33a303 user: dan tags: trunk | |
Changes
Changes to ext/fts3/fts3.c.
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static int fts3DestroyMethod(sqlite3_vtab *pVtab){
Fts3Table *p = (Fts3Table *)pVtab;
int rc = SQLITE_OK; /* Return code */
const char *zDb = p->zDb; /* Name of database (e.g. "main", "temp") */
sqlite3 *db = p->db; /* Database handle */
/* Drop the shadow tables */
if( p->zContentTbl==0 ){
fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", zDb, p->zName);
}
fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", zDb,p->zName);
fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", zDb, p->zName);
fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", zDb, p->zName);
fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", zDb, p->zName);
/* If everything has worked, invoke fts3DisconnectMethod() to free the
** memory associated with the Fts3Table structure and return SQLITE_OK.
** Otherwise, return an SQLite error code.
*/
return (rc==SQLITE_OK ? fts3DisconnectMethod(pVtab) : rc);
}
|
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static int fts3DestroyMethod(sqlite3_vtab *pVtab){
Fts3Table *p = (Fts3Table *)pVtab;
int rc = SQLITE_OK; /* Return code */
const char *zDb = p->zDb; /* Name of database (e.g. "main", "temp") */
sqlite3 *db = p->db; /* Database handle */
/* Drop the shadow tables */
fts3DbExec(&rc, db,
"DROP TABLE IF EXISTS %Q.'%q_segments';"
"DROP TABLE IF EXISTS %Q.'%q_segdir';"
"DROP TABLE IF EXISTS %Q.'%q_docsize';"
"DROP TABLE IF EXISTS %Q.'%q_stat';"
"%s DROP TABLE IF EXISTS %Q.'%q_content';",
zDb, p->zName,
zDb, p->zName,
zDb, p->zName,
zDb, p->zName,
(p->zContentTbl ? "--" : ""), zDb,p->zName
);
/* If everything has worked, invoke fts3DisconnectMethod() to free the
** memory associated with the Fts3Table structure and return SQLITE_OK.
** Otherwise, return an SQLite error code.
*/
return (rc==SQLITE_OK ? fts3DisconnectMethod(pVtab) : rc);
}
|
Changes to test/fts3fault.test.
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do_faultsim_test 10.1 -prep {
faultsim_delete_and_reopen
} -body {
execsql { CREATE VIRTUAL TABLE t1 USING fts4(a, b, languageid=d) }
} -test {
faultsim_test_result {0 {}}
}
finish_test
|
> > > > > > > > > > > > > > > > |
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do_faultsim_test 10.1 -prep {
faultsim_delete_and_reopen
} -body {
execsql { CREATE VIRTUAL TABLE t1 USING fts4(a, b, languageid=d) }
} -test {
faultsim_test_result {0 {}}
}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 11.0 {
CREATE VIRTUAL TABLE t1 USING fts3(a, b);
}
faultsim_save_and_close
do_faultsim_test 11 -faults oom* -prep {
faultsim_restore_and_reopen
} -body {
execsql { DROP TABLE t1 }
} -test {
faultsim_test_result {0 {}}
}
finish_test
|