/trunk/test/corruptC.test |
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# 2004 August 30 |
# |
# 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 creates a base |
# data base file, then tests that single byte corruptions in |
# increasingly larger quantities are handled gracefully. |
# |
# $Id: corruptC.test,v 1.14 2009/07/11 06:55:34 danielk1977 Exp $ |
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catch {file delete -force test.db test.db-journal test.bu} |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# Do not use a codec for tests in this file, as the database file is |
# manipulated directly using tcl scripts (using the [hexio_write] command). |
# |
do_not_use_codec |
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# Construct a compact, dense database for testing. |
# |
do_test corruptC-1.1 { |
execsql { |
PRAGMA auto_vacuum = 0; |
PRAGMA legacy_file_format=1; |
BEGIN; |
CREATE TABLE t1(x,y); |
INSERT INTO t1 VALUES(1,1); |
INSERT OR IGNORE INTO t1 SELECT x*2,y FROM t1; |
INSERT OR IGNORE INTO t1 SELECT x*3,y FROM t1; |
INSERT OR IGNORE INTO t1 SELECT x*5,y FROM t1; |
INSERT OR IGNORE INTO t1 SELECT x*7,y FROM t1; |
INSERT OR IGNORE INTO t1 SELECT x*11,y FROM t1; |
INSERT OR IGNORE INTO t1 SELECT x*13,y FROM t1; |
CREATE INDEX t1i1 ON t1(x); |
CREATE TABLE t2 AS SELECT x,2 as y FROM t1 WHERE rowid%5!=0; |
COMMIT; |
} |
} {} |
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ifcapable {integrityck} { |
integrity_check corruptC-1.2 |
} |
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# Generate random integer |
# |
proc random {range} { |
return [expr {round(rand()*$range)}] |
} |
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# Copy file $from into $to |
# |
proc copy_file {from to} { |
file copy -force $from $to |
} |
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# Setup for the tests. Make a backup copy of the good database in test.bu. |
# |
db close |
copy_file test.db test.bu |
sqlite3 db test.db |
set fsize [file size test.db] |
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# Set a quasi-random random seed. |
if {[info exists ::G(issoak)]} { |
# If we are doing SOAK tests, we want a different |
# random seed for each run. Ideally we would like |
# to use [clock clicks] or something like that here. |
set qseed [file mtime test.db] |
} else { |
# If we are not doing soak tests, |
# make it repeatable. |
set qseed 0 |
} |
expr srand($qseed) |
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# |
# First test some specific corruption tests found from earlier runs |
# with specific seeds. |
# |
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# test that a corrupt content offset size is handled (seed 5577) |
do_test corruptC-2.1 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 2053 [format %02x 0x04] |
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sqlite3 db test.db |
catchsql {PRAGMA integrity_check} |
} {1 {database disk image is malformed}} |
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# test that a corrupt content offset size is handled (seed 5649) |
do_test corruptC-2.2 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 27 [format %02x 0x08] |
hexio_write test.db 233 [format %02x 0x6a] |
hexio_write test.db 328 [format %02x 0x67] |
hexio_write test.db 750 [format %02x 0x1f] |
hexio_write test.db 1132 [format %02x 0x52] |
hexio_write test.db 1133 [format %02x 0x84] |
hexio_write test.db 1220 [format %02x 0x01] |
hexio_write test.db 3688 [format %02x 0xc1] |
hexio_write test.db 3714 [format %02x 0x58] |
hexio_write test.db 3746 [format %02x 0x9a] |
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sqlite3 db test.db |
catchsql {UPDATE t1 SET y=1} |
} {1 {database disk image is malformed}} |
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# test that a corrupt free cell size is handled (seed 13329) |
do_test corruptC-2.3 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 1094 [format %02x 0x76] |
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sqlite3 db test.db |
catchsql {UPDATE t1 SET y=1} |
} {1 {database disk image is malformed}} |
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# test that a corrupt free cell size is handled (seed 169571) |
do_test corruptC-2.4 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 3119 [format %02x 0xdf] |
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sqlite3 db test.db |
catchsql {UPDATE t2 SET y='abcdef-uvwxyz'} |
} {1 {database disk image is malformed}} |
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# test that a corrupt free cell size is handled (seed 169571) |
do_test corruptC-2.5 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 3119 [format %02x 0xdf] |
hexio_write test.db 4073 [format %02x 0xbf] |
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sqlite3 db test.db |
catchsql {BEGIN; UPDATE t2 SET y='abcdef-uvwxyz'; ROLLBACK;} |
catchsql {PRAGMA integrity_check} |
} {0 {{*** in database main *** |
Page 4: btreeInitPage() returns error code 11}}} |
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# {0 {{*** in database main *** |
# Corruption detected in cell 710 on page 4 |
# Multiple uses for byte 661 of page 4 |
# Fragmented space is 249 byte reported as 21 on page 4}}} |
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# test that a corrupt free cell size is handled (seed 169595) |
do_test corruptC-2.6 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 619 [format %02x 0xe2] |
hexio_write test.db 3150 [format %02x 0xa8] |
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sqlite3 db test.db |
catchsql {BEGIN; UPDATE t2 SET y='abcdef-uvwxyz'; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 178692) |
do_test corruptC-2.7 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 3074 [format %02x 0xa0] |
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sqlite3 db test.db |
catchsql {BEGIN; UPDATE t2 SET y='abcdef-uvwxyz'; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 179069) |
do_test corruptC-2.8 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 1393 [format %02x 0x7d] |
hexio_write test.db 84 [format %02x 0x19] |
hexio_write test.db 3287 [format %02x 0x3b] |
hexio_write test.db 2564 [format %02x 0xed] |
hexio_write test.db 2139 [format %02x 0x55] |
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sqlite3 db test.db |
catchsql {BEGIN; DELETE FROM t1 WHERE x>13; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 170434) |
do_test corruptC-2.9 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 2095 [format %02x 0xd6] |
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sqlite3 db test.db |
catchsql {BEGIN; DELETE FROM t1 WHERE x>13; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 186504) |
do_test corruptC-2.10 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 3130 [format %02x 0x02] |
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sqlite3 db test.db |
catchsql {BEGIN; UPDATE t2 SET y='abcdef-uvwxyz'; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 1589) |
do_test corruptC-2.11 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 55 [format %02x 0xa7] |
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sqlite3 db test.db |
catchsql {BEGIN; CREATE TABLE t3 AS SELECT x,3 as y FROM t2 WHERE rowid%5!=0; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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# corruption (seed 14166) |
do_test corruptC-2.12 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 974 [format %02x 0x2e] |
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sqlite3 db test.db |
catchsql {SELECT count(*) FROM sqlite_master;} |
} {1 {malformed database schema (t1i1) - corrupt database}} |
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# corruption (seed 218803) |
do_test corruptC-2.13 { |
db close |
copy_file test.bu test.db |
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# insert corrupt byte(s) |
hexio_write test.db 102 [format %02x 0x12] |
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sqlite3 db test.db |
catchsql {BEGIN; CREATE TABLE t3 AS SELECT x,3 as y FROM t2 WHERE rowid%5!=0; ROLLBACK;} |
} {1 {database disk image is malformed}} |
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do_test corruptC-2.14 { |
db close |
copy_file test.bu test.db |
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sqlite3 db test.db |
set blob [string repeat abcdefghij 10000] |
execsql { INSERT INTO t1 VALUES (1, $blob) } |
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sqlite3 db test.db |
set filesize [file size test.db] |
hexio_write test.db [expr $filesize-2048] 00000001 |
catchsql {DELETE FROM t1 WHERE rowid = (SELECT max(rowid) FROM t1)} |
} {1 {database disk image is malformed}} |
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# At one point this particular corrupt database was causing a buffer |
# overread. Which caused a crash in a run of all.test once. |
# |
do_test corruptC-2.15 { |
db close |
copy_file test.bu test.db |
hexio_write test.db 986 b9 |
sqlite3 db test.db |
catchsql {SELECT count(*) FROM sqlite_master;} |
} {1 {database disk image is malformed}} |
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# |
# Now test for a series of quasi-random seeds. |
# We loop over the entire file size and touch |
# each byte at least once. |
for {set tn 0} {$tn<$fsize} {incr tn 1} { |
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# setup for test |
db close |
copy_file test.bu test.db |
sqlite3 db test.db |
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# Seek to a random location in the file, and write a random single byte |
# value. Then do various operations on the file to make sure that |
# the database engine can handle the corruption gracefully. |
# |
set last 0 |
for {set i 1} {$i<=512 && !$last} {incr i 1} { |
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db close |
if {$i==1} { |
# on the first corrupt value, use location $tn |
# this ensures that we touch each location in the |
# file at least once. |
set roffset $tn |
} else { |
# insert random byte at random location |
set roffset [random $fsize] |
} |
set rbyte [format %02x [random 255]] |
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# You can uncomment the following to have it trace |
# exactly how it's corrupting the file. This is |
# useful for generating the "seed specific" tests |
# above. |
# set rline "$roffset $rbyte" |
# puts stdout $rline |
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hexio_write test.db $roffset $rbyte |
sqlite3 db test.db |
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# do a few random operations to make sure that if |
# they error, they error gracefully instead of crashing. |
do_test corruptC-3.$tn.($qseed).$i.1 { |
catchsql {SELECT count(*) FROM sqlite_master} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.2 { |
catchsql {SELECT count(*) FROM t1} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.3 { |
catchsql {SELECT count(*) FROM t1 WHERE x>13} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.4 { |
catchsql {SELECT count(*) FROM t2} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.5 { |
catchsql {SELECT count(*) FROM t2 WHERE x<13} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.6 { |
catchsql {BEGIN; UPDATE t1 SET y=1; ROLLBACK;} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.7 { |
catchsql {BEGIN; UPDATE t2 SET y='abcdef-uvwxyz'; ROLLBACK;} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.8 { |
catchsql {BEGIN; DELETE FROM t1 WHERE x>13; ROLLBACK;} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.9 { |
catchsql {BEGIN; DELETE FROM t2 WHERE x<13; ROLLBACK;} |
set x {} |
} {} |
do_test corruptC-3.$tn.($qseed).$i.10 { |
catchsql {BEGIN; CREATE TABLE t3 AS SELECT x,3 as y FROM t2 WHERE rowid%5!=0; ROLLBACK;} |
set x {} |
} {} |
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# check the integrity of the database. |
# once the corruption is detected, we can stop. |
ifcapable {integrityck} { |
set res [ catchsql {PRAGMA integrity_check} ] |
set ans [lindex $res 1] |
if { [ string compare $ans "ok" ] != 0 } { |
set last -1 |
} |
} |
# if we are not capable of doing an integrity check, |
# stop after corrupting 5 bytes. |
ifcapable {!integrityck} { |
if { $i > 5 } { |
set last -1 |
} |
} |
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# Check that no page references were leaked. |
# TBD: need to figure out why this doesn't work |
# work with ROLLBACKs... |
if {0} { |
do_test corruptC-3.$tn.($qseed).$i.11 { |
set bt [btree_from_db db] |
db_enter db |
array set stats [btree_pager_stats $bt] |
db_leave db |
set stats(ref) |
} {0} |
} |
} |
# end for i |
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} |
# end for tn |
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finish_test |