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Overview
| Comment: | Avoid reading outside a record buffer when extracting an SQL value in the sqlite_dbdata virtual table code. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
d99bb0c11d62f629bf59da037827af73 |
| User & Date: | dan 2019-05-09 11:34:31.409 |
Context
|
2019-05-09
| ||
| 11:45 | Fix a problem with running the ".recover" command on a database that is zero pages in size. (check-in: 47fa65343e user: dan tags: trunk) | |
| 11:34 | Avoid reading outside a record buffer when extracting an SQL value in the sqlite_dbdata virtual table code. (check-in: d99bb0c11d user: dan tags: trunk) | |
| 11:21 | Merge accidental fork in trunk. (check-in: ec9373031d user: dan tags: trunk) | |
Changes
Changes to ext/misc/dbdata.c.
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return 4;
case 5:
return 6;
case 6:
case 7:
return 8;
default:
return ((eType-12) / 2);
}
}
/*
** Load a value of type eType from buffer pData and use it to set the
** result of context object pCtx.
*/
| > > > | > > > > > > | 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 |
return 4;
case 5:
return 6;
case 6:
case 7:
return 8;
default:
if( eType>0 ){
return ((eType-12) / 2);
}
return 0;
}
}
/*
** Load a value of type eType from buffer pData and use it to set the
** result of context object pCtx.
*/
static void dbdataValue(
sqlite3_context *pCtx,
int eType,
u8 *pData,
int nData
){
if( eType>=0 && dbdataValueBytes(eType)<=nData ){
switch( eType ){
case 0:
case 10:
case 11:
sqlite3_result_null(pCtx);
break;
|
| ︙ | ︙ | |||
433 434 435 436 437 438 439 |
sqlite3_result_text(pCtx, (const char*)pData, n, SQLITE_TRANSIENT);
}else{
sqlite3_result_blob(pCtx, pData, n, SQLITE_TRANSIENT);
}
}
}
}
| | | 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 |
sqlite3_result_text(pCtx, (const char*)pData, n, SQLITE_TRANSIENT);
}else{
sqlite3_result_blob(pCtx, pData, n, SQLITE_TRANSIENT);
}
}
}
}
}
/*
** Move an sqlite_dbdata or sqlite_dbptr cursor to the next entry.
*/
static int dbdataNext(sqlite3_vtab_cursor *pCursor){
DbdataCursor *pCsr = (DbdataCursor*)pCursor;
DbdataTable *pTab = (DbdataTable*)pCursor->pVtab;
|
| ︙ | ︙ | |||
724 725 726 727 728 729 730 |
break;
case DBDATA_COLUMN_VALUE: {
if( pCsr->iField<0 ){
sqlite3_result_int64(ctx, pCsr->iIntkey);
}else{
sqlite3_int64 iType;
dbdataGetVarint(pCsr->pHdrPtr, &iType);
| | > > | 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 |
break;
case DBDATA_COLUMN_VALUE: {
if( pCsr->iField<0 ){
sqlite3_result_int64(ctx, pCsr->iIntkey);
}else{
sqlite3_int64 iType;
dbdataGetVarint(pCsr->pHdrPtr, &iType);
dbdataValue(
ctx, iType, pCsr->pPtr, &pCsr->pRec[pCsr->nRec] - pCsr->pPtr
);
}
break;
}
}
}
return SQLITE_OK;
}
|
| ︙ | ︙ |