3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
13 set testdir [file dirname $argv0]
14 source $testdir/tester.tcl
15 set testprefix corruptG
17 # Do not use a codec for tests in this file, as the database file is
18 # manipulated directly using tcl scripts (using the [hexio_write] command).
22 # These tests deal with corrupt database files
24 database_may_be_corrupt
26 # Create a simple database with a single entry. Then corrupt the
27 # header-size varint on the index payload so that it maps into a
28 # negative number. Try to use the database.
33 CREATE TABLE t1(a,b,c);
34 INSERT INTO t1(rowid,a,b,c) VALUES(52,'abc','xyz','123');
35 CREATE INDEX t1abc ON t1(a,b,c);
38 set idxroot [db one {SELECT rootpage FROM sqlite_master WHERE name = 't1abc'}]
42 hexio_write test.db [expr {$idxroot*512 - 15}] 888080807f
45 # Try to use the file.
48 SELECT c FROM t1 WHERE a>'abc';
50 } {1 {database disk image is malformed}}
53 PRAGMA integrity_check
55 } {1 {database disk image is malformed}}
58 SELECT c FROM t1 ORDER BY a;
60 } {1 {database disk image is malformed}}
62 # Corrupt the same file in a slightly different way. Make the record header
63 # sane, but corrupt one of the serial_type value to indicate a huge payload
64 # such that the payload begins in allocated space but overflows the buffer.
67 hexio_write test.db [expr {$idxroot*512-15}] 0513ff7f01
72 SELECT rowid FROM t1 WHERE a='abc' and b='xyz123456789XYZ';
74 } {1 {database disk image is malformed}}