/trunk/test/corruptB.test |
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# 2008 Sep 10 |
# |
# 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 loops in the B-Tree structure. A loop is formed in a B-Tree structure |
# when there exists a page that is both an a descendent or ancestor of |
# itself. |
# |
# Also test that an SQLITE_CORRUPT error is returned if a B-Tree page |
# contains a (corrupt) reference to a page greater than the configured |
# maximum page number. |
# |
# $Id: corruptB.test,v 1.4 2009/07/21 19:25:24 danielk1977 Exp $ |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# Do not use a codec for tests in this file, as the database file is |
# manipulated directly using tcl scripts (using the [hexio_write] command). |
# |
do_not_use_codec |
|
|
do_test corruptB-1.1 { |
execsql { |
PRAGMA auto_vacuum = 1; |
CREATE TABLE t1(x); |
INSERT INTO t1 VALUES(randomblob(200)); |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
} |
expr {[file size test.db] > (1024*9)} |
} {1} |
integrity_check corruptB-1.2 |
|
file copy -force test.db bak.db |
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# Set the right-child of a B-Tree rootpage to refer to the root-page itself. |
# |
do_test corruptB-1.3.1 { |
set ::root [execsql {SELECT rootpage FROM sqlite_master}] |
set ::offset [expr {($::root-1)*1024}] |
hexio_write test.db [expr $offset+8] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.3.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
# Set the left-child of a cell in a B-Tree rootpage to refer to the |
# root-page itself. |
# |
do_test corruptB-1.4.1 { |
db close |
file copy -force bak.db test.db |
set cell_offset [hexio_get_int [hexio_read test.db [expr $offset+12] 2]] |
hexio_write test.db [expr $offset+$cell_offset] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.4.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
# Now grow the table B-Tree so that it is more than 2 levels high. |
# |
do_test corruptB-1.5.1 { |
db close |
file copy -force bak.db test.db |
sqlite3 db test.db |
execsql { |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
INSERT INTO t1 SELECT randomblob(200) FROM t1; |
} |
} {} |
|
file copy -force test.db bak.db |
|
# Set the right-child pointer of the right-child of the root page to point |
# back to the root page. |
# |
do_test corruptB-1.6.1 { |
db close |
set iRightChild [hexio_get_int [hexio_read test.db [expr $offset+8] 4]] |
set c_offset [expr ($iRightChild-1)*1024] |
hexio_write test.db [expr $c_offset+8] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.6.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
# Set the left-child pointer of a cell of the right-child of the root page to |
# point back to the root page. |
# |
do_test corruptB-1.7.1 { |
db close |
file copy -force bak.db test.db |
set cell_offset [hexio_get_int [hexio_read test.db [expr $c_offset+12] 2]] |
hexio_write test.db [expr $c_offset+$cell_offset] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.7.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
do_test corruptB-1.8.1 { |
db close |
set cell_offset [hexio_get_int [hexio_read test.db [expr $offset+12] 2]] |
set iLeftChild [ |
hexio_get_int [hexio_read test.db [expr $offset+$cell_offset] 4] |
] |
set c_offset [expr ($iLeftChild-1)*1024] |
hexio_write test.db [expr $c_offset+8] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.8.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
# Set the left-child pointer of a cell of the right-child of the root page to |
# point back to the root page. |
# |
do_test corruptB-1.9.1 { |
db close |
file copy -force bak.db test.db |
set cell_offset [hexio_get_int [hexio_read test.db [expr $c_offset+12] 2]] |
hexio_write test.db [expr $c_offset+$cell_offset] [hexio_render_int32 $::root] |
} {4} |
do_test corruptB-1.9.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
#--------------------------------------------------------------------------- |
|
do_test corruptB-2.1.1 { |
db close |
file copy -force bak.db test.db |
hexio_write test.db [expr $offset+8] [hexio_render_int32 0x6FFFFFFF] |
} {4} |
do_test corruptB-2.1.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t1 } |
} {1 {database disk image is malformed}} |
|
#--------------------------------------------------------------------------- |
|
# Corrupt the header-size field of a database record. |
# |
do_test corruptB-3.1.1 { |
db close |
file copy -force bak.db test.db |
sqlite3 db test.db |
set v [string repeat abcdefghij 200] |
execsql { |
CREATE TABLE t2(a); |
INSERT INTO t2 VALUES($v); |
} |
set t2_root [execsql {SELECT rootpage FROM sqlite_master WHERE name = 't2'}] |
set iPage [expr ($t2_root-1)*1024] |
set iCellarray [expr $iPage + 8] |
set iRecord [hexio_get_int [hexio_read test.db $iCellarray 2]] |
db close |
hexio_write test.db [expr $iPage+$iRecord+3] FF00 |
} {2} |
do_test corruptB-3.1.2 { |
sqlite3 db test.db |
catchsql { SELECT * FROM t2 } |
} {1 {database disk image is malformed}} |
|
finish_test |