Annotation of embedaddon/sqlite3/test/corruptB.test, revision 1.1
1.1 ! misho 1: # 2008 Sep 10
! 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 loops in the B-Tree structure. A loop is formed in a B-Tree structure
! 16: # when there exists a page that is both an a descendent or ancestor of
! 17: # itself.
! 18: #
! 19: # Also test that an SQLITE_CORRUPT error is returned if a B-Tree page
! 20: # contains a (corrupt) reference to a page greater than the configured
! 21: # maximum page number.
! 22: #
! 23: # $Id: corruptB.test,v 1.4 2009/07/21 19:25:24 danielk1977 Exp $
! 24:
! 25: set testdir [file dirname $argv0]
! 26: source $testdir/tester.tcl
! 27:
! 28: # Do not use a codec for tests in this file, as the database file is
! 29: # manipulated directly using tcl scripts (using the [hexio_write] command).
! 30: #
! 31: do_not_use_codec
! 32:
! 33:
! 34: do_test corruptB-1.1 {
! 35: execsql {
! 36: PRAGMA auto_vacuum = 1;
! 37: CREATE TABLE t1(x);
! 38: INSERT INTO t1 VALUES(randomblob(200));
! 39: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 40: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 41: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 42: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 43: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 44: }
! 45: expr {[file size test.db] > (1024*9)}
! 46: } {1}
! 47: integrity_check corruptB-1.2
! 48:
! 49: forcecopy test.db bak.db
! 50:
! 51: # Set the right-child of a B-Tree rootpage to refer to the root-page itself.
! 52: #
! 53: do_test corruptB-1.3.1 {
! 54: set ::root [execsql {SELECT rootpage FROM sqlite_master}]
! 55: set ::offset [expr {($::root-1)*1024}]
! 56: hexio_write test.db [expr $offset+8] [hexio_render_int32 $::root]
! 57: } {4}
! 58: do_test corruptB-1.3.2 {
! 59: sqlite3 db test.db
! 60: catchsql { SELECT * FROM t1 }
! 61: } {1 {database disk image is malformed}}
! 62:
! 63: # Set the left-child of a cell in a B-Tree rootpage to refer to the
! 64: # root-page itself.
! 65: #
! 66: do_test corruptB-1.4.1 {
! 67: db close
! 68: forcecopy bak.db test.db
! 69: set cell_offset [hexio_get_int [hexio_read test.db [expr $offset+12] 2]]
! 70: hexio_write test.db [expr $offset+$cell_offset] [hexio_render_int32 $::root]
! 71: } {4}
! 72: do_test corruptB-1.4.2 {
! 73: sqlite3 db test.db
! 74: catchsql { SELECT * FROM t1 }
! 75: } {1 {database disk image is malformed}}
! 76:
! 77: # Now grow the table B-Tree so that it is more than 2 levels high.
! 78: #
! 79: do_test corruptB-1.5.1 {
! 80: db close
! 81: forcecopy bak.db test.db
! 82: sqlite3 db test.db
! 83: execsql {
! 84: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 85: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 86: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 87: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 88: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 89: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 90: INSERT INTO t1 SELECT randomblob(200) FROM t1;
! 91: }
! 92: } {}
! 93:
! 94: forcecopy test.db bak.db
! 95:
! 96: # Set the right-child pointer of the right-child of the root page to point
! 97: # back to the root page.
! 98: #
! 99: do_test corruptB-1.6.1 {
! 100: db close
! 101: set iRightChild [hexio_get_int [hexio_read test.db [expr $offset+8] 4]]
! 102: set c_offset [expr ($iRightChild-1)*1024]
! 103: hexio_write test.db [expr $c_offset+8] [hexio_render_int32 $::root]
! 104: } {4}
! 105: do_test corruptB-1.6.2 {
! 106: sqlite3 db test.db
! 107: catchsql { SELECT * FROM t1 }
! 108: } {1 {database disk image is malformed}}
! 109:
! 110: # Set the left-child pointer of a cell of the right-child of the root page to
! 111: # point back to the root page.
! 112: #
! 113: do_test corruptB-1.7.1 {
! 114: db close
! 115: forcecopy bak.db test.db
! 116: set cell_offset [hexio_get_int [hexio_read test.db [expr $c_offset+12] 2]]
! 117: hexio_write test.db [expr $c_offset+$cell_offset] [hexio_render_int32 $::root]
! 118: } {4}
! 119: do_test corruptB-1.7.2 {
! 120: sqlite3 db test.db
! 121: catchsql { SELECT * FROM t1 }
! 122: } {1 {database disk image is malformed}}
! 123:
! 124: do_test corruptB-1.8.1 {
! 125: db close
! 126: set cell_offset [hexio_get_int [hexio_read test.db [expr $offset+12] 2]]
! 127: set iLeftChild [
! 128: hexio_get_int [hexio_read test.db [expr $offset+$cell_offset] 4]
! 129: ]
! 130: set c_offset [expr ($iLeftChild-1)*1024]
! 131: hexio_write test.db [expr $c_offset+8] [hexio_render_int32 $::root]
! 132: } {4}
! 133: do_test corruptB-1.8.2 {
! 134: sqlite3 db test.db
! 135: catchsql { SELECT * FROM t1 }
! 136: } {1 {database disk image is malformed}}
! 137:
! 138: # Set the left-child pointer of a cell of the right-child of the root page to
! 139: # point back to the root page.
! 140: #
! 141: do_test corruptB-1.9.1 {
! 142: db close
! 143: forcecopy bak.db test.db
! 144: set cell_offset [hexio_get_int [hexio_read test.db [expr $c_offset+12] 2]]
! 145: hexio_write test.db [expr $c_offset+$cell_offset] [hexio_render_int32 $::root]
! 146: } {4}
! 147: do_test corruptB-1.9.2 {
! 148: sqlite3 db test.db
! 149: catchsql { SELECT * FROM t1 }
! 150: } {1 {database disk image is malformed}}
! 151:
! 152: #---------------------------------------------------------------------------
! 153:
! 154: do_test corruptB-2.1.1 {
! 155: db close
! 156: forcecopy bak.db test.db
! 157: hexio_write test.db [expr $offset+8] [hexio_render_int32 0x6FFFFFFF]
! 158: } {4}
! 159: do_test corruptB-2.1.2 {
! 160: sqlite3 db test.db
! 161: catchsql { SELECT * FROM t1 }
! 162: } {1 {database disk image is malformed}}
! 163:
! 164: #---------------------------------------------------------------------------
! 165:
! 166: # Corrupt the header-size field of a database record.
! 167: #
! 168: do_test corruptB-3.1.1 {
! 169: db close
! 170: forcecopy bak.db test.db
! 171: sqlite3 db test.db
! 172: set v [string repeat abcdefghij 200]
! 173: execsql {
! 174: CREATE TABLE t2(a);
! 175: INSERT INTO t2 VALUES($v);
! 176: }
! 177: set t2_root [execsql {SELECT rootpage FROM sqlite_master WHERE name = 't2'}]
! 178: set iPage [expr ($t2_root-1)*1024]
! 179: set iCellarray [expr $iPage + 8]
! 180: set iRecord [hexio_get_int [hexio_read test.db $iCellarray 2]]
! 181: db close
! 182: hexio_write test.db [expr $iPage+$iRecord+3] FF00
! 183: } {2}
! 184: do_test corruptB-3.1.2 {
! 185: sqlite3 db test.db
! 186: catchsql { SELECT * FROM t2 }
! 187: } {1 {database disk image is malformed}}
! 188:
! 189: finish_test
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