gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/corruptG.test (about)

     1  # 2013-08-01
     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  #
    12  
    13  set testdir [file dirname $argv0]
    14  source $testdir/tester.tcl
    15  set testprefix corruptG
    16  
    17  # This module uses hard-coded offsets which do not work if the reserved_bytes
    18  # value is nonzero.
    19  if {[nonzero_reserved_bytes]} {finish_test; return;}
    20  
    21  # These tests deal with corrupt database files
    22  #
    23  database_may_be_corrupt
    24  
    25  # Create a simple database with a single entry.  Then corrupt the
    26  # header-size varint on the index payload so that it maps into a
    27  # negative number.  Try to use the database.
    28  #
    29  
    30  do_execsql_test 1.1 {
    31    PRAGMA page_size=512;
    32    CREATE TABLE t1(a,b,c);
    33    INSERT INTO t1(rowid,a,b,c) VALUES(52,'abc','xyz','123');
    34    CREATE INDEX t1abc ON t1(a,b,c);
    35  }
    36  
    37  set idxroot [db one {SELECT rootpage FROM sqlite_master WHERE name = 't1abc'}]
    38  
    39  # Corrupt the file
    40  db close
    41  hexio_write test.db [expr {$idxroot*512 - 15}] 888080807f
    42  sqlite3 db test.db
    43  
    44  # Try to use the file.
    45  do_test 1.2 {
    46    catchsql {
    47      SELECT c FROM t1 WHERE a>'abc';
    48    }
    49  } {1 {database disk image is malformed}}
    50  do_test 1.3 {
    51    catchsql {
    52       PRAGMA integrity_check
    53    }
    54  } {1 {database disk image is malformed}}
    55  do_test 1.4 {
    56    catchsql {
    57      SELECT c FROM t1 ORDER BY a;
    58    }
    59  } {1 {database disk image is malformed}}
    60  
    61  # Corrupt the same file in a slightly different way.  Make the record header
    62  # sane, but corrupt one of the serial_type value to indicate a huge payload
    63  # such that the payload begins in allocated space but overflows the buffer.
    64  #
    65  db close
    66  hexio_write test.db [expr {$idxroot*512-15}] 0513ff7f01
    67  sqlite3 db test.db
    68  
    69  do_test 2.1 {
    70    catchsql {
    71      SELECT rowid FROM t1 WHERE a='abc' and b='xyz123456789XYZ';
    72    }
    73  } {1 {database disk image is malformed}}
    74  
    75  finish_test