320 lines
8.7 KiB
Plaintext
320 lines
8.7 KiB
Plaintext
# 2004 August 30
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library.
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#
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# This file implements tests to make sure SQLite does not crash or
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# segfault if it sees a corrupt database file.
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#
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# $Id: corrupt2.test,v 1.9 2008/07/08 10:19:58 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# The following tests - corrupt2-1.* - create some databases corrupted in
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# specific ways and ensure that SQLite detects them as corrupt.
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#
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do_test corrupt2-1.1 {
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execsql {
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CREATE TABLE abc(a, b, c);
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}
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} {}
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do_test corrupt2-1.2 {
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# Corrupt the 16 byte magic string at the start of the file
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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copy_file test.db corrupt.db
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set f [open corrupt.db RDWR]
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seek $f 8 start
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puts $f blah
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close $f
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sqlite3 db2 corrupt.db
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catchsql {
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SELECT * FROM sqlite_master;
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} db2
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} {1 {file is encrypted or is not a database}}
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do_test corrupt2-1.3 {
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db2 close
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# Corrupt the page-size (bytes 16 and 17 of page 1).
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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copy_file test.db corrupt.db
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set f [open corrupt.db RDWR]
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fconfigure $f -encoding binary
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seek $f 16 start
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puts -nonewline $f "\x00\xFF"
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close $f
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sqlite3 db2 corrupt.db
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catchsql {
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SELECT * FROM sqlite_master;
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} db2
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} {1 {file is encrypted or is not a database}}
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do_test corrupt2-1.4 {
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db2 close
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# Corrupt the free-block list on page 1.
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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copy_file test.db corrupt.db
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set f [open corrupt.db RDWR]
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fconfigure $f -encoding binary
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seek $f 101 start
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puts -nonewline $f "\xFF\xFF"
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close $f
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sqlite3 db2 corrupt.db
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catchsql {
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SELECT * FROM sqlite_master;
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} db2
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} {1 {database disk image is malformed}}
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do_test corrupt2-1.5 {
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db2 close
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# Corrupt the free-block list on page 1.
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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copy_file test.db corrupt.db
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set f [open corrupt.db RDWR]
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fconfigure $f -encoding binary
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seek $f 101 start
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puts -nonewline $f "\x00\xC8"
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seek $f 200 start
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puts -nonewline $f "\x00\x00"
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puts -nonewline $f "\x10\x00"
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close $f
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sqlite3 db2 corrupt.db
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catchsql {
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SELECT * FROM sqlite_master;
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} db2
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} {1 {database disk image is malformed}}
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db2 close
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# Corrupt a database by having 2 indices of the same name:
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do_test corrupt2-2.1 {
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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copy_file test.db corrupt.db
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sqlite3 db2 corrupt.db
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execsql {
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CREATE INDEX a1 ON abc(a);
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CREATE INDEX a2 ON abc(b);
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PRAGMA writable_schema = 1;
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UPDATE sqlite_master
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SET name = 'a3', sql = 'CREATE INDEX a3' || substr(sql, 16, 10000)
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WHERE type = 'index';
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PRAGMA writable_schema = 0;
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} db2
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db2 close
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sqlite3 db2 corrupt.db
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catchsql {
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SELECT * FROM sqlite_master;
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} db2
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} {1 {malformed database schema (a3) - index a3 already exists}}
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db2 close
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do_test corrupt2-3.1 {
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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sqlite3 db2 corrupt.db
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execsql {
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PRAGMA auto_vacuum = 1;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a, b, c);
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CREATE TABLE t2(a, b, c);
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INSERT INTO t2 VALUES(randomblob(100), randomblob(100), randomblob(100));
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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} db2
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db2 close
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# On the root page of table t2 (page 4), set one of the child page-numbers
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# to 0. This corruption will be detected when SQLite attempts to update
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# the pointer-map after moving the content of page 4 to page 3 as part
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# of the DROP TABLE operation below.
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#
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set fd [open corrupt.db r+]
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fconfigure $fd -encoding binary -translation binary
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seek $fd [expr 1024*3 + 12]
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set zCelloffset [read $fd 2]
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binary scan $zCelloffset S iCelloffset
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seek $fd [expr 1024*3 + $iCelloffset]
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puts -nonewline $fd "\00\00\00\00"
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close $fd
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sqlite3 db2 corrupt.db
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catchsql {
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DROP TABLE t1;
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} db2
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} {1 {database disk image is malformed}}
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do_test corrupt2-4.1 {
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catchsql {
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SELECT * FROM t2;
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} db2
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} {1 {database disk image is malformed}}
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do_test corrupt2-5.1 {
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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sqlite3 db2 corrupt.db
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execsql {
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a, b, c);
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CREATE TABLE t2(a, b, c);
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INSERT INTO t2 VALUES(randomblob(100), randomblob(100), randomblob(100));
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t2 SELECT * FROM t2;
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INSERT INTO t1 SELECT * FROM t2;
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} db2
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db2 close
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# This block links a page from table t2 into the t1 table structure.
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#
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set fd [open corrupt.db r+]
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fconfigure $fd -encoding binary -translation binary
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seek $fd [expr 1024 + 12]
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set zCelloffset [read $fd 2]
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binary scan $zCelloffset S iCelloffset
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seek $fd [expr 1024 + $iCelloffset]
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set zChildPage [read $fd 4]
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seek $fd [expr 2*1024 + 12]
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set zCelloffset [read $fd 2]
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binary scan $zCelloffset S iCelloffset
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seek $fd [expr 2*1024 + $iCelloffset]
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puts -nonewline $fd $zChildPage
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close $fd
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sqlite3 db2 corrupt.db
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db2 eval {SELECT rowid FROM t1} {
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set result [db2 eval {pragma integrity_check}]
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break
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}
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set result
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} {{*** in database main ***
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Page 10: sqlite3BtreeInitPage() returns error code 11
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On tree page 3 cell 1: Child page depth differs
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On tree page 2 cell 0: 2nd reference to page 10
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On tree page 2 cell 1: Child page depth differs
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Page 4 is never used}}
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db2 close
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proc corruption_test {args} {
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array set A $args
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catch {db close}
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file delete -force corrupt.db
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file delete -force corrupt.db-journal
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sqlite3 db corrupt.db
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db eval $A(-sqlprep)
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db close
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eval $A(-corrupt)
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sqlite3 db corrupt.db
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eval $A(-test)
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}
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ifcapable autovacuum {
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# The tests within this block - corrupt2-6.* - aim to test corruption
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# detection within an incremental-vacuum. When an incremental-vacuum
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# step is executed, the last non-free page of the database file is
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# moved into a free space in the body of the file. After doing so,
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# the page reference in the parent page must be updated to refer
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# to the new location. These tests test the outcome of corrupting
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# that page reference before performing the incremental vacuum.
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#
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# The last page in the database page is the second page
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# in an overflow chain.
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#
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corruption_test -sqlprep {
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PRAGMA auto_vacuum = incremental;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, randomblob(2500));
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INSERT INTO t1 VALUES(2, randomblob(2500));
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DELETE FROM t1 WHERE a = 1;
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} -corrupt {
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hexio_write corrupt.db [expr 1024*5] 00000008
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} -test {
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do_test corrupt2-6.1 {
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catchsql { pragma incremental_vacuum = 1 }
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} {1 {database disk image is malformed}}
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}
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# The last page in the database page is a non-root b-tree page.
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#
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corruption_test -sqlprep {
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PRAGMA auto_vacuum = incremental;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
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INSERT INTO t1 VALUES(1, randomblob(2500));
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INSERT INTO t1 VALUES(2, randomblob(50));
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INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
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INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
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INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
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INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
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DELETE FROM t1 WHERE a = 1;
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} -corrupt {
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hexio_write corrupt.db [expr 1024*2 + 8] 00000009
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} -test {
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do_test corrupt2-6.2 {
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catchsql { pragma incremental_vacuum = 1 }
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} {1 {database disk image is malformed}}
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}
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# Set up a pointer-map entry so that the last page of the database
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# file appears to be a b-tree root page. This should be detected
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# as corruption.
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#
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corruption_test -sqlprep {
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PRAGMA auto_vacuum = incremental;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
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INSERT INTO t1 VALUES(1, randomblob(2500));
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INSERT INTO t1 VALUES(2, randomblob(2500));
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INSERT INTO t1 VALUES(3, randomblob(2500));
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DELETE FROM t1 WHERE a = 1;
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} -corrupt {
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set nPage [expr [file size corrupt.db] / 1024]
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hexio_write corrupt.db [expr 1024 + ($nPage-3)*5] 010000000
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} -test {
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do_test corrupt2-6.3 {
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catchsql { pragma incremental_vacuum = 1 }
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} {1 {database disk image is malformed}}
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}
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}
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finish_test
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