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| 1 # 2008 July 9 |
| 2 # |
| 3 # The author disclaims copyright to this source code. In place of |
| 4 # a legal notice, here is a blessing: |
| 5 # |
| 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. |
| 9 # |
| 10 #*********************************************************************** |
| 11 # This file implements regression tests for SQLite library. |
| 12 # |
| 13 # This file implements tests to make sure SQLite does not crash or |
| 14 # segfault if it sees a corrupt database file. It specifically focuses |
| 15 # on corrupt pointer map pages. |
| 16 # |
| 17 # $Id: corrupt8.test,v 1.2 2008/07/11 03:34:10 drh Exp $ |
| 18 |
| 19 set testdir [file dirname $argv0] |
| 20 source $testdir/tester.tcl |
| 21 |
| 22 # Do not use a codec for tests in this file, as the database file is |
| 23 # manipulated directly using tcl scripts (using the [hexio_write] command). |
| 24 # |
| 25 do_not_use_codec |
| 26 |
| 27 # These tests deal with corrupt database files |
| 28 # |
| 29 database_may_be_corrupt |
| 30 |
| 31 # We must have the page_size pragma for these tests to work. |
| 32 # |
| 33 ifcapable !pager_pragmas||!autovacuum { |
| 34 finish_test |
| 35 return |
| 36 } |
| 37 |
| 38 # Create a database to work with. |
| 39 # |
| 40 do_test corrupt8-1.1 { |
| 41 execsql { |
| 42 PRAGMA auto_vacuum=1; |
| 43 PRAGMA page_size=1024; |
| 44 CREATE TABLE t1(x); |
| 45 INSERT INTO t1(x) VALUES(1); |
| 46 INSERT INTO t1(x) VALUES(2); |
| 47 INSERT INTO t1(x) SELECT x+2 FROM t1; |
| 48 INSERT INTO t1(x) SELECT x+4 FROM t1; |
| 49 INSERT INTO t1(x) SELECT x+8 FROM t1; |
| 50 INSERT INTO t1(x) SELECT x+16 FROM t1; |
| 51 INSERT INTO t1(x) SELECT x+32 FROM t1; |
| 52 INSERT INTO t1(x) SELECT x+64 FROM t1; |
| 53 INSERT INTO t1(x) SELECT x+128 FROM t1; |
| 54 INSERT INTO t1(x) SELECT x+256 FROM t1; |
| 55 CREATE TABLE t2(a,b); |
| 56 INSERT INTO t2 SELECT x, x*x FROM t1; |
| 57 } |
| 58 expr {[file size test.db]>1024*12} |
| 59 } {1} |
| 60 integrity_check corrupt8-1.2 |
| 61 |
| 62 # Loop through each ptrmap entry. Corrupt the entry and make sure the |
| 63 # corruption is detected by the integrity_check. |
| 64 # |
| 65 for {set i 1024} {$i<2048} {incr i 5} { |
| 66 set oldval [hexio_read test.db $i 1] |
| 67 if {$oldval==0} break |
| 68 hexio_write test.db $i 00 |
| 69 do_test corrupt8-2.$i.0 { |
| 70 db close |
| 71 sqlite3 db test.db |
| 72 set x [db eval {PRAGMA integrity_check}] |
| 73 expr {$x!="ok"} |
| 74 } {1} |
| 75 for {set k 1} {$k<=5} {incr k} { |
| 76 if {$k==$oldval} continue |
| 77 hexio_write test.db $i 0$k |
| 78 do_test corrupt8-2.$i.$k { |
| 79 db close |
| 80 sqlite3 db test.db |
| 81 set x [db eval {PRAGMA integrity_check}] |
| 82 expr {$x!="ok"} |
| 83 } {1} |
| 84 } |
| 85 hexio_write test.db $i 06 |
| 86 do_test corrupt8-2.$i.6 { |
| 87 db close |
| 88 sqlite3 db test.db |
| 89 set x [db eval {PRAGMA integrity_check}] |
| 90 expr {$x!="ok"} |
| 91 } {1} |
| 92 hexio_write test.db $i $oldval |
| 93 if {$oldval>2} { |
| 94 set i2 [expr {$i+1+$i%4}] |
| 95 set oldval [hexio_read test.db $i2 1] |
| 96 hexio_write test.db $i2 [format %02x [expr {($oldval+1)&0xff}]] |
| 97 do_test corrupt8-2.$i.7 { |
| 98 db close |
| 99 sqlite3 db test.db |
| 100 set x [db eval {PRAGMA integrity_check}] |
| 101 expr {$x!="ok"} |
| 102 } {1} |
| 103 hexio_write test.db $i2 $oldval |
| 104 } |
| 105 } |
| 106 |
| 107 |
| 108 finish_test |
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