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In sqlite3_declare_vtab(), avoid accessing the database structure until after the "api-armour" safety-check has completed and the db mutex has been obtained.

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FossilOrigin-Name: 860e4f8a94901d451fac3954960c1d2f589e8882
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dan
2015-04-10 16:05:33 +00:00
parent e918aaba98
commit 4e23536e56
3 changed files with 10 additions and 9 deletions
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3
src/vtab.c
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@@ -722,7 +722,7 @@ int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, char **pzErr){
** virtual table module.
*/
int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
VtabCtx *pCtx = db->pVtabCtx;
VtabCtx *pCtx;
Parse *pParse;
int rc = SQLITE_OK;
Table *pTab;
@@ -734,6 +734,7 @@ int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
}
#endif
sqlite3_mutex_enter(db->mutex);
pCtx = db->pVtabCtx;
if( !pCtx || pCtx->bDeclared ){
sqlite3Error(db, SQLITE_MISUSE);
sqlite3_mutex_leave(db->mutex);