SQLite

#
SHELL_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_FTS4
# SHELL_OPT += -DSQLITE_ENABLE_FTS5
SHELL_OPT += -DSQLITE_ENABLE_EXPLAIN_COMMENTS
SHELL_OPT += -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
FUZZCHECK_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ
FUZZCHECK_OPT += -DSQLITE_MAX_MEMORY=50000000
FUZZCHECK_SRC = $(TOP)/test/fuzzcheck.c $(TOP)/test/ossfuzz.c
DBFUZZ_OPT = 

# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	sqlite3.h libsqlite3.la sqlite3$(TEXE) $(HAVE_TCL:1=libtclsqlite3.la)

!ENDIF

# <<mark>>
# Extra compiler options for various test tools.
#
MPTESTER_COMPILE_OPTS = -DSQLITE_SHELL_JSON1 -DSQLITE_ENABLE_FTS5
FUZZERSHELL_COMPILE_OPTS = -DSQLITE_ENABLE_JSON1
FUZZCHECK_COMPILE_OPTS = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ -DSQLITE_MAX_MEMORY=50000000
FUZZCHECK_SRC = $(TOP)\test\fuzzcheck.c $(TOP)\test\ossfuzz.c
OSSSHELL_SRC = $(TOP)\test\ossshell.c $(TOP)\test\ossfuzz.c
DBFUZZ_COMPILE_OPTS = -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION
KV_COMPILE_OPTS = -DSQLITE_THREADSAFE=0 -DSQLITE_DIRECT_OVERFLOW_READ
DBSELFTEST_COMPILE_OPTS = -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_ENABLE_RTREE -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_FTS5
ST_COMPILE_OPTS = -DSQLITE_THREADSAFE=0

# Extra compiler options for various shell tools
#
SHELL_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_FTS5
SHELL_OPT += -DSQLITE_ENABLE_EXPLAIN_COMMENTS
SHELL_OPT += -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
FUZZCHECK_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5
FUZZCHECK_OPT += -DSQLITE_MAX_MEMORY=50000000
DBFUZZ_OPT =
KV_OPT = -DSQLITE_THREADSAFE=0 -DSQLITE_DIRECT_OVERFLOW_READ
ST_OPT = -DSQLITE_THREADSAFE=0

# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#

  ** mode and specifically when the DMD "Dark Matter Detector" is enabled
  ** or else a crash results.  Hence, do not attempt to optimize out the
  ** following xRoundup() call. */
  nFull = sqlite3GlobalConfig.m.xRoundup(n);

#ifdef SQLITE_MAX_MEMORY
  if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED)+nFull>SQLITE_MAX_MEMORY ){
    *pp = 0;
    return;
  }
#endif

  sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, n);
  if( mem0.alarmThreshold>0 ){
    sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
    if( nUsed >= mem0.alarmThreshold - nFull ){

/*
** This module interfaces SQLite to the Google OSS-Fuzz, fuzzer as a service.
** (https://github.com/google/oss-fuzz)
*/
#include <stddef.h>
#include <stdint.h>
#include "sqlite3.h"

/* Return the current real-world time in milliseconds since the
** Julian epoch (-4714-11-24).
*/
static sqlite3_int64 timeOfDay(void){
  static sqlite3_vfs *clockVfs = 0;
  sqlite3_int64 t;
  if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0);
  if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){
    clockVfs->xCurrentTimeInt64(clockVfs, &t);
  }else{
    double r;
    clockVfs->xCurrentTime(clockVfs, &r);
    t = (sqlite3_int64)(r*86400000.0);
  }
  return t;
}

#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
/*
** Progress handler callback.
**
** The argument is the cutoff-time after which all processing should
** stop.  So return non-zero if the cut-off time is exceeded.
*/
static int progress_handler(void *pReturn) {
  sqlite3_int64 iCutoffTime = *(sqlite3_int64*)pReturn;
  return timeOfDay()>=iCutoffTime;
}
#endif

/*
** Callback for sqlite3_exec().
*/
static int exec_handler(void *pCnt, int argc, char **argv, char **namev){
  int i;
  if( argv ){
    for(i=0; i<argc; i++) sqlite3_free(sqlite3_mprintf("%s", argv[i]));
  }
  return ((*(int*)pCnt)--)<=0;
}

/*
** Main entry point.  The fuzzer invokes this function with each
** fuzzed input.
*/
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {

  int execCnt = 0;         /* Abort row callback when count reaches zero */
  char *zErrMsg = 0;       /* Error message returned by sqlite_exec() */
  sqlite3 *db;             /* The database connection */
  uint8_t uSelector;       /* First byte of input data[] */
  int rc;                  /* Return code from various interfaces */
  char *zSql;              /* Zero-terminated copy of data[] */
  sqlite3_int64 iCutoff;   /* Cutoff timer */

  if( size<3 ) return 0;   /* Early out if unsufficient data */

  /* Extract the selector byte from the beginning of the input.  But only
  ** do this if the second byte is a \n.  If the second byte is not \n,
  ** then use a default selector */
  if( data[1]=='\n' ){
    uSelector = data[0];  data += 2; size -= 2;
  }else{
    uSelector = 0xfd;
  }

  /* Open the database connection.  Only use an in-memory database. */
  rc = sqlite3_open_v2("fuzz.db", &db,
           SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_MEMORY, 0);
  if( rc ) return 0;

#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
  /* Invoke the progress handler every 500 thousand instructions (approximately
  ** 20 to 40 times per second) to check to see if we are taking too long.

  */
  iCutoff = timeOfDay() + 10000;  /* Now + 10 seconds */
  sqlite3_progress_handler(db, 500000, progress_handler, (void*)&iCutoff);

#endif



  /* Bit 1 of the selector enables foreign key constraints */
  sqlite3_db_config(db, SQLITE_DBCONFIG_ENABLE_FKEY, uSelector&1, &rc);
  uSelector >>= 1;

  /* Remaining bits of the selector determine a limit on the number of
  ** output rows */
  execCnt = uSelector + 1;