# 2008 May 6

#

# The author disclaims copyright to this source code. In place of

# a legal notice, here is a blessing:

#

# May you do good and not evil.

# May you find forgiveness for yourself and forgive others.

# May you share freely, never taking more than you give.

#

#***********************************************************************

# This file implements regression tests for SQLite library.

#

# This file implements tests to make sure SQLite does not crash or

# segfault if it sees a corrupt database file. It specifically focuses

# on corrupt SerialTypeLen values.

#

# $Id: corrupt6.test,v 1.2 2008/05/19 15:37:10 shane Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Do not use a codec for tests in this file, as the database file is

# manipulated directly using tcl scripts (using the [hexio_write] command).

#

do_not_use_codec

# We must have the page_size pragma for these tests to work.

#

ifcapable !pager_pragmas {

finish_test

return

}

# Create a simple, small database.

#

do_test corrupt6-1.1 {

execsql {

PRAGMA auto_vacuum=OFF;

PRAGMA page_size=1024;

CREATE TABLE t1(x);

INSERT INTO t1(x) VALUES('varint32-01234567890123456789012345678901234567890123456789');

INSERT INTO t1(x) VALUES('varint32-01234567890123456789012345678901234567890123456789');

}

file size test.db

} [expr {1024*2}]

# Verify that the file format is as we expect. The page size

# should be 1024 bytes.

#

do_test corrupt6-1.2 {

hexio_get_int [hexio_read test.db 16 2]

} 1024 ;# The page size is 1024

do_test corrupt6-1.3 {

hexio_get_int [hexio_read test.db 20 1]

} 0 ;# Unused bytes per page is 0

integrity_check corrupt6-1.4

# Verify SerialTypeLen for first field of two records as we expect.

# SerialTypeLen = (len*2+12) = 60*2+12 = 132

do_test corrupt6-1.5.1 {

hexio_read test.db 1923 2

} 8103 ;# First text field size is 81 03 == 131

do_test corrupt6-1.5.2 {

hexio_read test.db 1987 2

} 8103 ;# Second text field size is 81 03 == 131

# Verify simple query results as expected.

do_test corrupt6-1.6 {

db close

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 0 {varint32 varint32} ]

integrity_check corrupt6-1.7

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Increase SerialTypeLen by 2.

do_test corrupt6-1.8.1 {

db close

hexio_write test.db 1923 8105

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Decrease SerialTypeLen by 2.

do_test corrupt6-1.8.2 {

db close

hexio_write test.db 1923 8101

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Put value of record 1 / field 1 SerialTypeLen back.

do_test corrupt6-1.8.3 {

db close

hexio_write test.db 1923 8103

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 0 {varint32 varint32} ]

integrity_check corrupt6-1.8.4

# Adjust value of record 2 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Increase SerialTypeLen by 2.

do_test corrupt6-1.9.1 {

db close

hexio_write test.db 1987 8105

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 2 / field 2 SerialTypeLen and see if the

# corruption is detected.

# Decrease SerialTypeLen by 2.

do_test corrupt6-1.9.2 {

db close

hexio_write test.db 1987 8101

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Put value of record 1 / field 2 SerialTypeLen back.

do_test corrupt6-1.9.3 {

db close

hexio_write test.db 1987 8103

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 0 {varint32 varint32} ]

integrity_check corrupt6-1.9.4

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF 7F (2 bytes)

do_test corrupt6-1.10.1 {

db close

hexio_write test.db 1923 FF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF 7F (3 bytes)

do_test corrupt6-1.10.2 {

db close

hexio_write test.db 1923 FFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF 7F (4 bytes)

do_test corrupt6-1.10.3 {

db close

hexio_write test.db 1923 FFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF FF 7F (5 bytes)

do_test corrupt6-1.10.4 {

db close

hexio_write test.db 1923 FFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF FF FF 7F (6 bytes, and overflows).

do_test corrupt6-1.10.5 {

db close

hexio_write test.db 1923 FFFFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF FF FF FF 7F (7 bytes, and overflows).

do_test corrupt6-1.10.6 {

db close

hexio_write test.db 1923 FFFFFFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF FF FF FF FF 7F (8 bytes, and overflows).

do_test corrupt6-1.10.7 {

db close

hexio_write test.db 1923 FFFFFFFFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FF FF FF FF FF FF FF FF 7F (9 bytes, and overflows).

do_test corrupt6-1.10.8 {

db close

hexio_write test.db 1923 FFFFFFFFFFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

# Adjust value of record 1 / field 1 SerialTypeLen and see if the

# corruption is detected.

# Set SerialTypeLen to FFFF FF FF FF FF FF FF FF 7F (10 bytes, and overflows).

do_test corrupt6-1.10.9 {

db close

hexio_write test.db 1923 FFFFFFFFFFFFFFFFFF7F

sqlite3 db test.db

catchsql {

SELECT substr(x,1,8) FROM t1

}

} [list 1 {database disk image is malformed}]

finish_test