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Fix for sqlite3_blob_write(): If either 3rd or 4th argument is less than zero, return SQLITE_ERROR. H17879. (CVS 5762)

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FossilOrigin-Name: f6074c0b9b5ba51d131509dba2aec80d0fcf3b7e
This commit is contained in:
danielk1977
2008-10-02 14:49:01 +00:00
parent 25ef8f1c2c
commit a8b3018da4
5 changed files with 61 additions and 29 deletions
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20
src/vdbeblob.c
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@@ -12,7 +12,7 @@
**
** This file contains code used to implement incremental BLOB I/O.
**
** $Id: vdbeblob.c,v 1.25 2008/07/28 19:34:54 drh Exp $
** $Id: vdbeblob.c,v 1.26 2008/10/02 14:49:02 danielk1977 Exp $
*/
#include "sqliteInt.h"
@@ -287,17 +287,17 @@ static int blobReadWrite(
Vdbe *v;
sqlite3 *db = p->db;
/* Request is out of range. Return a transient error. */
if( (iOffset+n)>p->nByte ){
return SQLITE_ERROR;
}
sqlite3_mutex_enter(db->mutex);
/* If there is no statement handle, then the blob-handle has
** already been invalidated. Return SQLITE_ABORT in this case.
*/
v = (Vdbe*)p->pStmt;
if( v==0 ){
if( n<0 || iOffset<0 || (iOffset+n)>p->nByte ){
/* Request is out of range. Return a transient error. */
rc = SQLITE_ERROR;
sqlite3Error(db, SQLITE_ERROR, 0);
} else if( v==0 ){
/* If there is no statement handle, then the blob-handle has
** already been invalidated. Return SQLITE_ABORT in this case.
*/
rc = SQLITE_ABORT;
}else{
/* Call either BtreeData() or BtreePutData(). If SQLITE_ABORT is