# 2017-03-03
#
# 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.
#
#***********************************************************************
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix corruptK
if {[permutation]=="mmap"} {
finish_test
return
}
# This module uses hard-coded offsets which do not work if the reserved_bytes
# value is nonzero.
if {[nonzero_reserved_bytes]} {finish_test; return;}
database_may_be_corrupt
# Initialize the database.
#
do_execsql_test 1.1 {
PRAGMA page_size=1024;
PRAGMA auto_vacuum=0;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(randomblob(20));
INSERT INTO t1 VALUES(randomblob(100)); -- make this into a free slot
INSERT INTO t1 VALUES(randomblob(27)); -- this one will be corrupt
INSERT INTO t1 VALUES(randomblob(800));
DELETE FROM t1 WHERE rowid=2; -- free the 100 byte slot
PRAGMA page_count
} {2}
# Corrupt the database so that the blob stored immediately before
# the free slot (rowid==3) has an overlarge length field. So that
# we can use sqlite3_blob_write() to manipulate the size field of
# the free slot.
#
# Then use sqlite3_blob_write() to set the size of said free slot
# to 24 bytes (instead of the actual 100).
#
# Then use the new 24 byte slot. Leaving the in-memory version of
# the page with zero free slots and a large nFree value. Then try
# to allocate another slot to get to defragmentPage().
#
do_test 1.2 {
db close
hexio_write test.db [expr 1024 + 0x360] 21
hexio_write test.db [expr 1024 + 0x363] [format %x [expr 31*2 + 12]]
sqlite3 db test.db
set fd [db incrblob t1 x 3]
fconfigure $fd -translation binary -encoding binary
seek $fd 30
puts -nonewline $fd "\x18"
close $fd
} {}
do_execsql_test 1.3 {
INSERT INTO t1 VALUES(randomblob(20));
}
do_catchsql_test 1.4 {
INSERT INTO t1 VALUES(randomblob(90));
} {1 {database disk image is malformed}}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 2.1 {
PRAGMA page_size=1024;
PRAGMA auto_vacuum=0;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(randomblob(20));
INSERT INTO t1 VALUES(randomblob(20)); -- free this one
INSERT INTO t1 VALUES(randomblob(20));
INSERT INTO t1 VALUES(randomblob(20)); -- and this one
INSERT INTO t1 VALUES(randomblob(20)); -- corrupt this one.
DELETE FROM t1 WHERE rowid IN(2, 4);
PRAGMA page_count
} {2}
do_test 2.2 {
db close
hexio_write test.db [expr 1024 + 0x388] 53
hexio_write test.db [expr 1024 + 0x38A] 03812C
sqlite3 db test.db
set fd [db incrblob t1 x 5]
fconfigure $fd -translation binary -encoding binary
seek $fd 22
puts -nonewline $fd "\x5d"
close $fd
} {}
do_catchsql_test 2.3 {
INSERT INTO t1 VALUES(randomblob(900));
} {1 {database disk image is malformed}}
finish_test