/trunk/test/corrupt7.test |
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# 2008 June 11 |
# |
# 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 cell offsets in a btree page. |
# |
# $Id: corrupt7.test,v 1.8 2009/08/10 10:18:08 danielk1977 Exp $ |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# 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 corrupt7-1.1 { |
execsql { |
PRAGMA auto_vacuum=OFF; |
PRAGMA page_size=1024; |
CREATE TABLE t1(x); |
INSERT INTO t1(x) VALUES(1); |
INSERT INTO t1(x) VALUES(2); |
INSERT INTO t1(x) SELECT x+2 FROM t1; |
INSERT INTO t1(x) SELECT x+4 FROM t1; |
INSERT INTO t1(x) SELECT x+8 FROM t1; |
} |
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 corrupt7-1.2 { |
hexio_get_int [hexio_read test.db 16 2] |
} 1024 ;# The page size is 1024 |
do_test corrupt7-1.3 { |
hexio_get_int [hexio_read test.db 20 1] |
} 0 ;# Unused bytes per page is 0 |
|
integrity_check corrupt7-1.4 |
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# Deliberately corrupt some of the cell offsets in the btree page |
# on page 2 of the database. |
# |
# The error message is different depending on whether or not the |
# SQLITE_ENABLE_OVERSIZE_CELL_CHECK compile-time option is engaged. |
# |
ifcapable oversize_cell_check { |
do_test corrupt7-2.1 { |
db close |
hexio_write test.db 1062 FF |
sqlite3 db test.db |
db eval {PRAGMA integrity_check(1)} |
} {{*** in database main *** |
Page 2: btreeInitPage() returns error code 11}} |
do_test corrupt7-2.2 { |
db close |
hexio_write test.db 1062 04 |
sqlite3 db test.db |
db eval {PRAGMA integrity_check(1)} |
} {{*** in database main *** |
Page 2: btreeInitPage() returns error code 11}} |
} else { |
do_test corrupt7-2.1 { |
db close |
hexio_write test.db 1062 FF |
sqlite3 db test.db |
db eval {PRAGMA integrity_check(1)} |
} {{*** in database main *** |
Corruption detected in cell 15 on page 2}} |
do_test corrupt7-2.2 { |
db close |
hexio_write test.db 1062 04 |
sqlite3 db test.db |
db eval {PRAGMA integrity_check(1)} |
} {{*** in database main *** |
On tree page 2 cell 15: Rowid 0 out of order (previous was 15)}} |
} |
|
# The code path that was causing the buffer overrun that this test |
# case was checking for was removed. |
# |
#do_test corrupt7-3.1 { |
# execsql { |
# DROP TABLE t1; |
# CREATE TABLE t1(a, b); |
# INSERT INTO t1 VALUES(1, 'one'); |
# INSERT INTO t1 VALUES(100, 'one hundred'); |
# INSERT INTO t1 VALUES(100000, 'one hundred thousand'); |
# CREATE INDEX i1 ON t1(b); |
# } |
# db close |
# |
# # Locate the 3rd cell in the index. |
# set cell_offset [hexio_get_int [hexio_read test.db [expr 1024*2 + 12] 2]] |
# incr cell_offset [expr 1024*2] |
# incr cell_offset 1 |
# |
# # This write corrupts the "header-size" field of the database record |
# # stored in the index cell. At one point this was causing sqlite to |
# # reference invalid memory. |
# hexio_write test.db $cell_offset FFFF7F |
# |
# sqlite3 db test.db |
# catchsql { |
# SELECT b FROM t1 WHERE b > 'o' AND b < 'p'; |
# } |
#} {1 {database disk image is malformed}} |
|
finish_test |