Import SQLite 3.7.6.3.

third_party/sqlite/src/test/corrupt2.test

 # 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.
 #
 # $Id: corrupt2.test,v 1.20 2009/04/06 17:50:03 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 
+# 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
+
+set presql ""
+catch { set presql "$::G(perm:presql);" }
+unset -nocomplain ::G(perm:presql)
+
 # The following tests - corrupt2-1.* - create some databases corrupted in
 # specific ways and ensure that SQLite detects them as corrupt.
 #
 do_test corrupt2-1.1 {
   execsql {
     PRAGMA auto_vacuum=0;
     PRAGMA page_size=1024;
     CREATE TABLE abc(a, b, c);
   }
 } {}
 
 do_test corrupt2-1.2 {
 
   # Corrupt the 16 byte magic string at the start of the file
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   copy_file test.db corrupt.db
   set f [open corrupt.db RDWR]
   seek $f 8 start
   puts $f blah
   close $f
 
   sqlite3 db2 corrupt.db
-  catchsql {
+  catchsql "
+    $::presql
     SELECT * FROM sqlite_master;
-  } db2
+  " db2
 } {1 {file is encrypted or is not a database}}
 
 do_test corrupt2-1.3 {
   db2 close
 
   # Corrupt the page-size (bytes 16 and 17 of page 1).
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   copy_file test.db corrupt.db
   set f [open corrupt.db RDWR]
   fconfigure $f -encoding binary
   seek $f 16 start
   puts -nonewline $f "\x00\xFF"
   close $f
 
   sqlite3 db2 corrupt.db
-  catchsql {
+  catchsql "
+    $::presql
     SELECT * FROM sqlite_master;
-  } db2
+  " db2
 } {1 {file is encrypted or is not a database}}
 
 do_test corrupt2-1.4 {
   db2 close
 
   # Corrupt the free-block list on page 1.
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   copy_file test.db corrupt.db
   set f [open corrupt.db RDWR]
   fconfigure $f -encoding binary
   seek $f 101 start
   puts -nonewline $f "\xFF\xFF"
   close $f
 
   sqlite3 db2 corrupt.db
-  catchsql {
+  catchsql "
+    $::presql
     SELECT * FROM sqlite_master;
-  } db2
+  " db2
 } {1 {database disk image is malformed}}
 
 do_test corrupt2-1.5 {
   db2 close
 
   # Corrupt the free-block list on page 1.
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   copy_file test.db corrupt.db
   set f [open corrupt.db RDWR]
   fconfigure $f -encoding binary
   seek $f 101 start
   puts -nonewline $f "\x00\xC8"
   seek $f 200 start
   puts -nonewline $f "\x00\x00"
   puts -nonewline $f "\x10\x00"
   close $f
 
   sqlite3 db2 corrupt.db
-  catchsql {
+  catchsql "
+    $::presql
     SELECT * FROM sqlite_master;
-  } db2
+  " db2
 } {1 {database disk image is malformed}}
 db2 close
 
 # Corrupt a database by having 2 indices of the same name:
 do_test corrupt2-2.1 {
 
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   copy_file test.db corrupt.db
 
   sqlite3 db2 corrupt.db 
-  execsql {
+  execsql "
+    $::presql
     CREATE INDEX a1 ON abc(a);
     CREATE INDEX a2 ON abc(b);
     PRAGMA writable_schema = 1;
     UPDATE sqlite_master 
       SET name = 'a3', sql = 'CREATE INDEX a3' || substr(sql, 16, 10000)
       WHERE type = 'index';
     PRAGMA writable_schema = 0;
-  } db2
+  " db2
 
   db2 close
   sqlite3 db2 corrupt.db 
-  catchsql {
+  catchsql "
+    $::presql
     SELECT * FROM sqlite_master;
-  } db2
+  " db2
 } {1 {malformed database schema (a3) - index a3 already exists}}
 
 db2 close
 
 do_test corrupt2-3.1 {
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   sqlite3 db2 corrupt.db 
 
-  execsql {
+  execsql "
+    $::presql
     PRAGMA auto_vacuum = 1;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a, b, c);
     CREATE TABLE t2(a, b, c);
     INSERT INTO t2 VALUES(randomblob(100), randomblob(100), randomblob(100));
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
-  } db2
+  " db2
 
   db2 close
 
   # On the root page of table t2 (page 4), set one of the child page-numbers
   # to 0. This corruption will be detected when SQLite attempts to update
   # the pointer-map after moving the content of page 4 to page 3 as part
   # of the DROP TABLE operation below.
   #
   set fd [open corrupt.db r+]
   fconfigure $fd -encoding binary -translation binary
   seek $fd [expr 1024*3 + 12]
   set zCelloffset [read $fd 2]
   binary scan $zCelloffset S iCelloffset
   seek $fd [expr 1024*3 + $iCelloffset]
   puts -nonewline $fd "\00\00\00\00" 
   close $fd
 
   sqlite3 db2 corrupt.db 
-  catchsql {
+  catchsql "
+    $::presql
     DROP TABLE t1;
-  } db2
+  " db2
 } {1 {database disk image is malformed}}
 
 do_test corrupt2-4.1 {
   catchsql {
     SELECT * FROM t2;
   } db2
 } {1 {database disk image is malformed}}
 
 db2 close
 
 unset -nocomplain result
 do_test corrupt2-5.1 {
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
   sqlite3 db2 corrupt.db 
 
-  execsql {
+  execsql "
+    $::presql
     PRAGMA auto_vacuum = 0;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a, b, c);
     CREATE TABLE t2(a, b, c);
     INSERT INTO t2 VALUES(randomblob(100), randomblob(100), randomblob(100));
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t2 SELECT * FROM t2;
     INSERT INTO t1 SELECT * FROM t2;
-  } db2
+  " db2
 
   db2 close
 
   # This block links a page from table t2 into the t1 table structure.
   #
   set fd [open corrupt.db r+]
   fconfigure $fd -encoding binary -translation binary
   seek $fd [expr 1024 + 12]
   set zCelloffset [read $fd 2]
   binary scan $zCelloffset S iCelloffset
   seek $fd [expr 1024 + $iCelloffset]
   set zChildPage [read $fd 4]
   seek $fd [expr 2*1024 + 12]
   set zCelloffset [read $fd 2]
   binary scan $zCelloffset S iCelloffset
   seek $fd [expr 2*1024 + $iCelloffset]
   puts -nonewline $fd $zChildPage
   close $fd
 
   sqlite3 db2 corrupt.db 
+  db2 eval $::presql
   db2 eval {SELECT rowid FROM t1} {
     set result [db2 eval {pragma integrity_check}]
     break
   }
   set result
 } {{*** in database main ***
 On tree page 2 cell 0: 2nd reference to page 10
 On tree page 2 cell 1: Child page depth differs
 Page 4 is never used}}
 
 db2 close
 
 proc corruption_test {args} {
   set A(-corrupt) {}
   set A(-sqlprep) {}
   set A(-tclprep) {}
   array set A $args
 
   catch {db close}
   file delete -force corrupt.db
   file delete -force corrupt.db-journal
 
   sqlite3 db corrupt.db 
+  db eval $::presql
   eval $A(-tclprep)
   db eval $A(-sqlprep)
   db close
 
   eval $A(-corrupt)
 
   sqlite3 db corrupt.db
   eval $A(-test)
 }
 
@@ skipping 14 matching lines @@
     PRAGMA auto_vacuum = incremental;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a, b);
     INSERT INTO t1 VALUES(1, randomblob(2500));
     INSERT INTO t1 VALUES(2, randomblob(2500));
     DELETE FROM t1 WHERE a = 1;
   } -corrupt {
     hexio_write corrupt.db [expr 1024*5] 00000008
   } -test {
     do_test corrupt2-6.1 {
-      catchsql { pragma incremental_vacuum = 1 }
+      catchsql " $::presql pragma incremental_vacuum = 1 "
     } {1 {database disk image is malformed}}
   }
 
   # The last page in the database page is a non-root b-tree page.
   #
   corruption_test -sqlprep {
     PRAGMA auto_vacuum = incremental;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
     INSERT INTO t1 VALUES(1, randomblob(2500));
     INSERT INTO t1 VALUES(2, randomblob(50));
     INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
     INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
     INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
     INSERT INTO t1 SELECT NULL, randomblob(50) FROM t1;
     DELETE FROM t1 WHERE a = 1;
   } -corrupt {
     hexio_write corrupt.db [expr 1024*2 + 8] 00000009
   } -test {
     do_test corrupt2-6.2 {
-      catchsql { pragma incremental_vacuum = 1 }
+      catchsql " $::presql pragma incremental_vacuum = 1 "
     } {1 {database disk image is malformed}}
   }
 
   # Set up a pointer-map entry so that the last page of the database
   # file appears to be a b-tree root page. This should be detected
   # as corruption.
   #
   corruption_test -sqlprep {
     PRAGMA auto_vacuum = incremental;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
     INSERT INTO t1 VALUES(1, randomblob(2500));
     INSERT INTO t1 VALUES(2, randomblob(2500));
     INSERT INTO t1 VALUES(3, randomblob(2500));
     DELETE FROM t1 WHERE a = 1;
   } -corrupt {
     set nPage [expr [file size corrupt.db] / 1024]
     hexio_write corrupt.db [expr 1024 + ($nPage-3)*5] 010000000
   } -test {
     do_test corrupt2-6.3 {
-      catchsql { pragma incremental_vacuum = 1 }
+      catchsql " $::presql pragma incremental_vacuum = 1 "
     } {1 {database disk image is malformed}}
   }
 
   corruption_test -sqlprep {
     PRAGMA auto_vacuum = 1;
     PRAGMA page_size = 1024;
     CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
     INSERT INTO t1 VALUES(1, randomblob(2500));
     DELETE FROM t1 WHERE a = 1;
   } -corrupt {
     set nAppend [expr 1024*207 - [file size corrupt.db]]
     set fd [open corrupt.db r+]
     seek $fd 0 end
     puts -nonewline $fd [string repeat x $nAppend]
     close $fd
+    hexio_write corrupt.db 28 00000000
   } -test {
     do_test corrupt2-6.4 {
-      catchsql { 
+      catchsql " 
+        $::presql 
         BEGIN EXCLUSIVE;
         COMMIT;
-      }
+      "
     } {1 {database disk image is malformed}}
   }
 }
 
 
 set sqlprep {
   PRAGMA auto_vacuum = 0;
   PRAGMA page_size = 1024;
   CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
   CREATE INDEX i1 ON t1(b);
@@ skipping 13 matching lines @@
   set fd [open corrupt.db r+]
   fconfigure $fd -translation binary -encoding binary
   seek $fd [expr 1024*2 + 8] 
   set zRightChild [read $fd 4]
   binary scan $zRightChild I iRightChild
   seek $fd [expr 1024*($iRightChild-1)]
   puts -nonewline $fd "\x0D"
   close $fd
 } -test {
   do_test corrupt2-7.1 {
-    catchsql { SELECT b FROM t1 ORDER BY b ASC }
+    catchsql " $::presql SELECT b FROM t1 ORDER BY b ASC "
   } {1 {database disk image is malformed}}
 }
 
 corruption_test -sqlprep $sqlprep -corrupt {
   # Mess up the page-header of one of the leaf pages of the index B-Tree.
   # The corruption is detected as part of an OP_Prev opcode.
   #
   set fd [open corrupt.db r+]
   fconfigure $fd -translation binary -encoding binary
   seek $fd [expr 1024*2 + 12] 
   set zCellOffset [read $fd 2]
   binary scan $zCellOffset S iCellOffset
   seek $fd [expr 1024*2 + $iCellOffset]
   set zChild [read $fd 4]
   binary scan $zChild I iChild
   seek $fd [expr 1024*($iChild-1)+3]
   puts -nonewline $fd "\xFFFF"
   close $fd
 } -test {
   do_test corrupt2-7.1 {
-    catchsql { SELECT b FROM t1 ORDER BY b DESC }
+    catchsql " $::presql SELECT b FROM t1 ORDER BY b DESC "
   } {1 {database disk image is malformed}}
 }
 
 corruption_test -sqlprep $sqlprep -corrupt {
   # Set the page-flags of one of the leaf pages of the table B-Tree to
   # 0x0A (interpreted by SQLite as "leaf page of an index B-Tree").
   #
   set fd [open corrupt.db r+]
   fconfigure $fd -translation binary -encoding binary
   seek $fd [expr 1024*1 + 8] 
   set zRightChild [read $fd 4]
   binary scan $zRightChild I iRightChild
   seek $fd [expr 1024*($iRightChild-1)]
   puts -nonewline $fd "\x0A"
   close $fd
 } -test {
   do_test corrupt2-8.1 {
-    catchsql { SELECT * FROM t1 WHERE rowid=1000 }
+    catchsql " $::presql SELECT * FROM t1 WHERE rowid=1000 "
   } {1 {database disk image is malformed}}
 }
 
 corruption_test -sqlprep {
   CREATE TABLE t1(a, b, c); CREATE TABLE t8(a, b, c); CREATE TABLE tE(a, b, c);
   CREATE TABLE t2(a, b, c); CREATE TABLE t9(a, b, c); CREATE TABLE tF(a, b, c);
   CREATE TABLE t3(a, b, c); CREATE TABLE tA(a, b, c); CREATE TABLE tG(a, b, c);
   CREATE TABLE t4(a, b, c); CREATE TABLE tB(a, b, c); CREATE TABLE tH(a, b, c);
   CREATE TABLE t5(a, b, c); CREATE TABLE tC(a, b, c); CREATE TABLE tI(a, b, c);
   CREATE TABLE t6(a, b, c); CREATE TABLE tD(a, b, c); CREATE TABLE tJ(a, b, c);
   CREATE TABLE x1(a, b, c); CREATE TABLE x8(a, b, c); CREATE TABLE xE(a, b, c);
   CREATE TABLE x2(a, b, c); CREATE TABLE x9(a, b, c); CREATE TABLE xF(a, b, c);
   CREATE TABLE x3(a, b, c); CREATE TABLE xA(a, b, c); CREATE TABLE xG(a, b, c);
   CREATE TABLE x4(a, b, c); CREATE TABLE xB(a, b, c); CREATE TABLE xH(a, b, c);
   CREATE TABLE x5(a, b, c); CREATE TABLE xC(a, b, c); CREATE TABLE xI(a, b, c);
   CREATE TABLE x6(a, b, c); CREATE TABLE xD(a, b, c); CREATE TABLE xJ(a, b, c);
 } -corrupt {
   set fd [open corrupt.db r+]
   fconfigure $fd -translation binary -encoding binary
   seek $fd 108
   set zRightChild [read $fd 4]
   binary scan $zRightChild I iRightChild
   seek $fd [expr 1024*($iRightChild-1)+3]
   puts -nonewline $fd "\x00\x00"
   close $fd
 } -test {
   do_test corrupt2-9.1 {
-    catchsql { SELECT sql FROM sqlite_master }
+    catchsql " $::presql SELECT sql FROM sqlite_master "
   } {1 {database disk image is malformed}}
 }
 
 corruption_test -sqlprep {
   CREATE TABLE t1(a, b, c);
   CREATE TABLE t2(a, b, c);
   PRAGMA writable_schema = 1;
   UPDATE sqlite_master SET rootpage = NULL WHERE name = 't2';
 } -test {
   do_test corrupt2-10.1 {
-    catchsql { SELECT * FROM t2 }
+    catchsql " $::presql SELECT * FROM t2 "
   } {1 {malformed database schema (t2)}}
   do_test corrupt2-10.2 {
     sqlite3_errcode db
   } {SQLITE_CORRUPT}
 }
 
 corruption_test -sqlprep {
   PRAGMA auto_vacuum = incremental;
   CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
   CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
   INSERT INTO t1 VALUES(1, randstr(100,100));
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t2 SELECT * FROM t1;
   DELETE FROM t1;
 } -corrupt {
   set offset [expr [file size corrupt.db] - 1024]
   hexio_write corrupt.db $offset FF 
   hexio_write corrupt.db 24   12345678
 } -test {
   do_test corrupt2-11.1 {
-    catchsql { PRAGMA incremental_vacuum }
+    catchsql " $::presql PRAGMA incremental_vacuum "
   } {1 {database disk image is malformed}}
 }
 corruption_test -sqlprep {
   PRAGMA auto_vacuum = incremental;
   CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
   CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
   INSERT INTO t1 VALUES(1, randstr(100,100));
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t1 SELECT NULL, randstr(100,100) FROM t1;
   INSERT INTO t2 SELECT * FROM t1;
   DELETE FROM t1;
 } -corrupt {
   set pgno [expr [file size corrupt.db] / 1024]
   hexio_write corrupt.db [expr 1024+5*($pgno-3)] 03 
   hexio_write corrupt.db 24   12345678
 } -test {
   do_test corrupt2-12.1 {
-    catchsql { PRAGMA incremental_vacuum }
+    catchsql " $::presql PRAGMA incremental_vacuum "
   } {1 {database disk image is malformed}}
 }
 
 ifcapable autovacuum {
   # It is not possible for the last page in a database file to be the
   # pending-byte page (AKA the locking page). This test verifies that if
   # an attempt is made to commit a transaction to such an auto-vacuum 
   # database SQLITE_CORRUPT is returned.
   #
   corruption_test -tclprep {
     db eval { 
       PRAGMA auto_vacuum = full;
       PRAGMA page_size = 1024;
       CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
       INSERT INTO t1 VALUES(NULL, randstr(50,50));
     }
     for {set ii 0} {$ii < 10} {incr ii} {
-      db eval { INSERT INTO t1 SELECT NULL, randstr(50,50) FROM t1 }
+      db eval " $::presql INSERT INTO t1 SELECT NULL, randstr(50,50) FROM t1 "
     }
   } -corrupt {
     do_test corrupt2-13.1 {
       file size corrupt.db
     } $::sqlite_pending_byte
     hexio_write corrupt.db [expr $::sqlite_pending_byte+1023] 00
+    hexio_write corrupt.db 28 00000000
   } -test {
     do_test corrupt2-13.2 {
       file size corrupt.db
     } [expr $::sqlite_pending_byte + 1024]
     do_test corrupt2-13.3 {
       catchsql { DELETE FROM t1 WHERE rowid < 30; }
     } {1 {database disk image is malformed}}
   }
 }
 
 finish_test