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Overview
| Comment: | Improvements to the dbfuzz2.c test module. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
d60eff493b875366981c5a25000bb65c |
| User & Date: | drh 2018-10-27 21:06:44 |
Context
|
2018-10-29
| ||
| 16:07 | Harden the dbstat extension against corrupt database files. (check-in: a0d47f25 user: drh tags: trunk) | |
|
2018-10-27
| ||
| 21:06 | Improvements to the dbfuzz2.c test module. (check-in: d60eff49 user: drh tags: trunk) | |
| 16:02 | Add an entry in Makefile.in to build dbfuzz2 using clang-6.0 with -fsanitize=fuzzer,undefined. (check-in: a4a083ed user: drh tags: trunk) | |
Changes
Changes to Makefile.in.
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-DSQLITE_DEBUG \
-DSQLITE_ENABLE_DBSTAT_VTAB \
-DSQLITE_ENABLE_RTREE \
-DSQLITE_ENABLE_FTS4 \
-DSQLITE_EANBLE_FTS5
dbfuzz2: $(TOP)/test/dbfuzz2.c sqlite3.c sqlite3.h
clang-6.0 -I. -g -Os -fsanitize=fuzzer,undefined -o dbfuzz2 \
$(DBFUZZ2_OPTS) $(TOP)/test/dbfuzz2.c sqlite3.c
mkdir -p dbfuzz2-dir
cp $(TOP)/test/dbfuzz2-seed* dbfuzz2-dir
mptester$(TEXE): sqlite3.lo $(TOP)/mptest/mptest.c
$(LTLINK) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.lo \
$(TLIBS) -rpath "$(libdir)"
|
| |
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-DSQLITE_DEBUG \
-DSQLITE_ENABLE_DBSTAT_VTAB \
-DSQLITE_ENABLE_RTREE \
-DSQLITE_ENABLE_FTS4 \
-DSQLITE_EANBLE_FTS5
dbfuzz2: $(TOP)/test/dbfuzz2.c sqlite3.c sqlite3.h
clang-6.0 -I. -g -O0 -fsanitize=fuzzer,undefined -o dbfuzz2 \
$(DBFUZZ2_OPTS) $(TOP)/test/dbfuzz2.c sqlite3.c
mkdir -p dbfuzz2-dir
cp $(TOP)/test/dbfuzz2-seed* dbfuzz2-dir
mptester$(TEXE): sqlite3.lo $(TOP)/mptest/mptest.c
$(LTLINK) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.lo \
$(TLIBS) -rpath "$(libdir)"
|
Changes to test/dbfuzz2.c.
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** This is the is the SQL that is run against the database.
*/
static const char *azSql[] = {
"PRAGMA integrity_check;",
"SELECT * FROM sqlite_master;",
"SELECT sum(length(name)) FROM dbstat;",
"UPDATE t1 SET b=a, a=b WHERE a<b;",
"ALTER TABLE t1 RENAME TO alkjalkjdfiiiwuer987lkjwer82mx97sf98788s9789s;"
"INSERT INTO t3 SELECT * FROM t2;",
"DELETE FROM t3 WHERE x IN (SELECT x FROM t4);",
"REINDEX;"
"DROP TABLE t3;",
"VACUUM;",
};
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
unsigned char *a;
sqlite3 *db;
int rc;
int i;
rc = sqlite3_open(":memory:", &db);
if( rc ) return 1;
a = sqlite3_malloc64(nByte);
if( a==0 ) return 1;
memcpy(a, aData, nByte);
sqlite3_deserialize(db, "main", a, nByte, nByte,
SQLITE_DESERIALIZE_RESIZEABLE |
SQLITE_DESERIALIZE_FREEONCLOSE);
for(i=0; i<sizeof(azSql)/sizeof(azSql[0]); i++){
sqlite3_exec(db, azSql[i], 0, 0, 0);
}
sqlite3_close(db);
return 0;
}
|
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** This is the is the SQL that is run against the database.
*/
static const char *azSql[] = {
"PRAGMA integrity_check;",
"SELECT * FROM sqlite_master;",
"SELECT sum(length(name)) FROM dbstat;",
"UPDATE t1 SET b=a, a=b WHERE a<b;",
"ALTER TABLE t1 RENAME TO alkjalkjdfiiiwuer987lkjwer82mx97sf98788s9789s;",
"INSERT INTO t3 SELECT * FROM t2;",
"DELETE FROM t3 WHERE x IN (SELECT x FROM t4);",
"REINDEX;",
"DROP TABLE t3;",
"VACUUM;",
};
/* Output verbosity level. 0 means complete silence */
int eVerbosity = 0;
/* libFuzzer invokes this routine with fuzzed database files (in aData).
** This routine run SQLite against the malformed database to see if it
** can provoke a failure or malfunction.
*/
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
unsigned char *a;
sqlite3 *db;
int rc;
int i;
if( eVerbosity>=1 ){
printf("************** nByte=%d ***************\n", (int)nByte);
fflush(stdout);
}
rc = sqlite3_open(":memory:", &db);
if( rc ) return 1;
a = sqlite3_malloc64(nByte);
if( a==0 ) return 1;
memcpy(a, aData, nByte);
sqlite3_deserialize(db, "main", a, nByte, nByte,
SQLITE_DESERIALIZE_RESIZEABLE |
SQLITE_DESERIALIZE_FREEONCLOSE);
for(i=0; i<sizeof(azSql)/sizeof(azSql[0]); i++){
if( eVerbosity>=1 ){
printf("%s\n", azSql[i]);
fflush(stdout);
}
sqlite3_exec(db, azSql[i], 0, 0, 0);
}
sqlite3_close(db);
if( sqlite3_memory_used()!=0 ){
fprintf(stderr,"Memory leak: %lld bytes\n", sqlite3_memory_used());
exit(1);
}
return 0;
}
/* libFuzzer invokes this routine once when the executable starts, to
** process the command-line arguments.
*/
int LLVMFuzzerInitialize(int *pArgc, char ***pArgv){
int i, j;
int argc = *pArgc;
char **newArgv;
char **argv = *pArgv;
newArgv = malloc( sizeof(char*)*(argc+1) );
if( newArgv==0 ) return 0;
newArgv[0] = argv[0];
for(i=j=1; i<argc; i++){
char *z = argv[i];
if( z[0]=='-' ){
z++;
if( z[0]=='-' ) z++;
if( strcmp(z,"v")==0 ){
eVerbosity++;
continue;
}
}
newArgv[j++] = argv[i];
}
newArgv[j] = 0;
*pArgv = newArgv;
*pArgc = j;
return 0;
}
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