SQLite: Check-in [42c79edc]

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Overview

Comment:	Fix a buffer-overflow problem in the randStr function (used only for testing). (CVS 1182)
Downloads:	Tarball \| ZIP archive \| SQL archive
Timelines:	family \| ancestors \| descendants \| both \| trunk
Files:	files \| file ages \| folders
SHA1:	42c79edc2e8d1051b3bca915b4b205c601b8077f
User & Date:	drh 2004-01-16 13:58:18

Context

2004-01-16
15:55		Incremental code compaction in expr.c. Now about 4% smaller. Lots more work to do. (CVS 1183) check-in: d292ba51 user: drh tags: trunk
13:58		Fix a buffer-overflow problem in the randStr function (used only for testing). (CVS 1182) check-in: 42c79edc user: drh tags: trunk
2004-01-15
13:29		More aggressive retry schedule in sqlite_busy_timeout(). (CVS 1181) check-in: 5e85025b user: drh tags: trunk

Changes

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Changes to src/func.c.

** This file contains the C functions that implement various SQL
** functions of SQLite.  
**
** There is only one exported symbol in this file - the function
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: func.c,v 1.35 2004/01/02 13:17:49 drh Exp $
*/
#include <ctype.h>
#include <math.h>
#include <stdlib.h>
#include <assert.h>
#include "sqliteInt.h"
#include "os.h"
................................................................................
    if( iMin>=sizeof(zBuf) ) iMin = sizeof(zBuf)-1;
  }else{
    iMin = 1;
  }
  if( argc>=2 ){
    iMax = atoi(argv[1]);
    if( iMax<iMin ) iMax = iMin;
    if( iMax>=sizeof(zBuf) ) iMax = sizeof(zBuf);
  }else{
    iMax = 50;
  }
  n = iMin;
  if( iMax>iMin ){
    r = sqliteRandomInteger() & 0x7fffffff;
    n += r%(iMax + 1 - iMin);
  }

  r = 0;
  for(i=0; i<n; i++){
    r = (r + sqliteRandomByte())% (sizeof(zSrc)-1);
    zBuf[i] = zSrc[r];
  }
  zBuf[n] = 0;
  sqlite_set_result_string(context, zBuf, n);

** This file contains the C functions that implement various SQL
** functions of SQLite.  
**
** There is only one exported symbol in this file - the function
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: func.c,v 1.36 2004/01/16 13:58:18 drh Exp $
*/
#include <ctype.h>
#include <math.h>
#include <stdlib.h>
#include <assert.h>
#include "sqliteInt.h"
#include "os.h"
................................................................................
    if( iMin>=sizeof(zBuf) ) iMin = sizeof(zBuf)-1;
  }else{
    iMin = 1;
  }
  if( argc>=2 ){
    iMax = atoi(argv[1]);
    if( iMax<iMin ) iMax = iMin;
    if( iMax>=sizeof(zBuf) ) iMax = sizeof(zBuf)-1;
  }else{
    iMax = 50;
  }
  n = iMin;
  if( iMax>iMin ){
    r = sqliteRandomInteger() & 0x7fffffff;
    n += r%(iMax + 1 - iMin);
  }
  assert( n<sizeof(zBuf) );
  r = 0;
  for(i=0; i<n; i++){
    r = (r + sqliteRandomByte())% (sizeof(zSrc)-1);
    zBuf[i] = zSrc[r];
  }
  zBuf[n] = 0;
  sqlite_set_result_string(context, zBuf, n);