3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
13 set testdir [file dirname $argv0]
14 source $testdir/tester.tcl
15 set testprefix corruptI
17 if {[permutation]=="mmap"} {
22 # This module uses hard-coded offsets which do not work if the reserved_bytes
24 if {[nonzero_reserved_bytes]} {finish_test; return;}
26 database_may_be_corrupt
28 # Initialize the database.
31 PRAGMA page_size=1024;
34 CREATE INDEX i1 ON t1(a);
35 INSERT INTO t1 VALUES('abcdefghijklmnop');
40 set offset [hexio_get_int [hexio_read test.db [expr 2*1024 + 8] 2]]
41 set off [expr 2*1024 + $offset + 1]
42 hexio_write test.db $off 7f06
44 catchsql { SELECT * FROM t1 WHERE a = 10 }
49 set offset [hexio_get_int [hexio_read test.db [expr 2*1024 + 8] 2]]
50 set off [expr 2*1024 + $offset + 1]
51 hexio_write test.db $off FFFF7f02
53 catchsql { SELECT * FROM t1 WHERE a = 10 }
54 } {1 {database disk image is malformed}}
59 INSERT INTO r VALUES('ABCDEFGHIJK');
60 CREATE INDEX r1 ON r(x);
62 set pg [db one {SELECT rootpage FROM sqlite_master WHERE name = 'r1'}]
67 set offset [hexio_get_int [hexio_read test.db [expr (5-1)*1024 + 8] 2]]
68 set off [expr (5-1)*1024 + $offset + 1]
69 hexio_write test.db $off FFFF0004
71 catchsql { SELECT * FROM r WHERE x >= 10.0 }
72 } {1 {database disk image is malformed}}
75 catchsql { SELECT * FROM r WHERE x >= 10 }
76 } {1 {database disk image is malformed}}
78 if {[db one {SELECT sqlite_compileoption_used('ENABLE_OVERSIZE_CELL_CHECK')}]} {
79 # The following tests only work if OVERSIZE_CELL_CHECK is disabled
84 PRAGMA page_size = 512;
85 CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
87 SELECT 2, 'abcdefghij'
89 SELECT a+2, b FROM s WHERe a < 40
91 INSERT INTO t1 SELECT * FROM s;
95 hexio_write test.db [expr 512+3] 0054
98 execsql { INSERT INTO t1 VALUES(5, 'klmnopqrst') }
99 execsql { INSERT INTO t1 VALUES(7, 'klmnopqrst') }
104 do_catchsql_test 3.3 {
105 INSERT INTO t1 VALUES(9, 'klmnopqrst');
106 } {1 {database disk image is malformed}}
107 } ;# end-if !defined(ENABLE_OVERSIZE_CELL_CHECK)
110 #-------------------------------------------------------------------------
111 # Test that an assert() failure discovered by AFL corrupt database file
112 # testing has been fixed.
115 do_execsql_test 4.0 {
116 PRAGMA page_size = 65536;
117 PRAGMA autovacuum = 0;
118 CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
119 INSERT INTO t1 VALUES(-1, 'abcdefghij');
120 INSERT INTO t1 VALUES(0, 'abcdefghij');
123 set root [db one {SELECT rootpage FROM sqlite_master}]
124 set offset [expr ($root-1) * 65536]
128 hexio_write test.db [expr $offset + 8 + 2] 0000
129 hexio_write test.db [expr $offset + 5] 0000
131 catchsql { DELETE FROM t1 WHERE a=0 }
132 } {1 {database disk image is malformed}}
135 #-------------------------------------------------------------------------
136 # Database properties:
138 # * Incremental vacuum mode.
139 # * Database root table has a single leaf page.
140 # * Free list consists of a single trunk page.
142 # The db is then corrupted by adding the root table leaf page as a free-list
143 # leaf page (so that it is referenced twice).
145 # Then, a new table is created. The new root page is the current free-list
146 # trunk. This means that the root table leaf page is made into the new
147 # free list trunk, which corrupts its header. Then, when the new entry is
148 # inserted into the root table, things would get chaotic.
153 PRAGMA page_size = 512;
154 PRAGMA auto_vacuum = 2;
156 for {set i 3} {1} {incr i} {
157 execsql "CREATE TABLE t${i}(x)"
158 if {[db one {PRAGMA page_count}]>$i} break
160 set nPage [db one {PRAGMA page_count}]
162 CREATE TABLE t100(x);
167 do_execsql_test 5.1 {
172 # The last page of the db is now the only leaf of the sqlite_master table.
173 # Corrupt the db by adding it to the free-list as well (the second last
174 # page of the db is the free-list trunk).
176 hexio_write test.db [expr 512*($nPage-1)] [
177 format "%.8X%.8X%.8X" 0 1 [expr $nPage+1]
183 catchsql { CREATE TABLE tx(x); }
184 } {1 {database disk image is malformed}}
187 #-------------------------------------------------------------------------
188 # Set the payload size of a cell to just less than 2^32 bytes (not
189 # possible in an uncorrupted db). Then try to delete the cell. At one
190 # point this led to an integer overflow that caused an assert() to fail.
193 do_execsql_test 6.0 {
194 PRAGMA page_size = 512;
195 PRAGMA auto_vacuum=0;
197 INSERT INTO t1 VALUES(zeroblob(300));
198 INSERT INTO t1 VALUES(zeroblob(600));
202 hexio_write test.db 616 8FFFFFFF7F02
204 execsql { DELETE FROM t1 WHERE rowid=2 }
207 #-------------------------------------------------------------------------
208 # See what happens if the sqlite_master entry associated with a PRIMARY
209 # KEY or UNIQUE index is removed.
212 do_execsql_test 7.0 {
213 PRAGMA auto_vacuum=0;
214 CREATE TABLE t1(x PRIMARY KEY, y);
215 INSERT INTO t1 VALUES('a', 'A');
216 INSERT INTO t1 VALUES('b', 'A');
217 INSERT INTO t1 VALUES('c', 'A');
218 SELECT name FROM sqlite_master;
219 } {t1 sqlite_autoindex_t1_1}
220 sqlite3_db_config db DEFENSIVE 0
221 do_execsql_test 7.1 {
222 PRAGMA writable_schema = 1;
223 DELETE FROM sqlite_master WHERE name = 'sqlite_autoindex_t1_1';
228 catchsql { UPDATE t1 SET x='d' AND y='D' WHERE rowid = 2 }
229 } {1 {database disk image is malformed}}
231 #-------------------------------------------------------------------------
232 # At one point an assert() would fail if attempt was made to free page 1.
235 do_execsql_test 8.0 {
236 PRAGMA auto_vacuum=0;
238 INSERT INTO t1 VALUES(zeroblob(300));
239 INSERT INTO t1 VALUES(zeroblob(300));
240 INSERT INTO t1 VALUES(zeroblob(300));
241 INSERT INTO t1 VALUES(zeroblob(300));
246 hexio_write test.db [expr 1024 + 8] 00000001
248 catchsql { DELETE FROM t1 }
249 } {1 {database disk image is malformed}}
254 execsql { PRAGMA integrity_check }
255 } {/.*in database main.*/}