7 files changed, 748 insertions, 215 deletions

diff --git a/harnesses/ascii_compatible.dict b/harnesses/ascii_compatible.dict
index 820bf47..e6e00db 100644
--- a/harnesses/ascii_compatible.dict
+++ b/harnesses/ascii_compatible.dict
@@ -1,10 +1,7 @@
 # First-pass fuzzing dictionary for Oniguruma by Mark Griffin
-"\\o{17777777777}"
-"\\777"
-"\\u"
-"\\uFFFF"
-"\\xFF"
-"\\x{70000000}"
+"\\o{34}"
+"\\123"
+"\\x{40}"
 "\\C-"
 "\\M-\\C-"
 "\\X"
@@ -12,6 +9,8 @@
 "\\p{^"
 "}"
 "]"
+"]"
+")"
 ")"
 "\\n"
 "\\r"
@@ -47,10 +46,13 @@
 "\\B"
 "(?y{"
 "[abcd1-9]"
+"[\\w]"
+"[\\W]"
+"[\\s]"
+"[\\S]"
 "[\\w\\d"
 "[\\p{Alphabetic}"
-"[\\P{Arabic}"
-"[\\x{ffff}"
+"[\\x{03}"
 "[a-w&&"
 "[^"
 "[:graph:]"
@@ -88,7 +90,6 @@
 "(?(<name+0>))"
 "(?(<name+1>))"
 "(?(<name-1>))"
-"(*ERROR{-2000})"
 "(*COUNT[tag]{X})"
 "\\1"
 "\\2"
@@ -106,6 +107,5 @@
 "(?<name>a|b\\g<name>c)"
 "(?-i:\\g<name>)"
 "\\N{name}"
-"\\p{Hiragana}"
 "\\p{Katakana}"
 "\\p{Emoji}"
diff --git a/harnesses/deluxe-encode-harness.c b/harnesses/deluxe-encode-harness.c
index e1f84a5..aabe916 100644
--- a/harnesses/deluxe-encode-harness.c
+++ b/harnesses/deluxe-encode-harness.c
@@ -49,39 +49,6 @@ search(regex_t* reg, unsigned char* str, unsigned char* end)
   return 0;
 }
 
-static int
-exec(OnigEncoding enc, OnigOptionType options,
-     char* apattern, char* apattern_end, char* astr, char* astr_end)
-{
-  int r;
-  regex_t* reg;
-  OnigErrorInfo einfo;
-  UChar* pattern = (UChar* )apattern;
-  UChar* str     = (UChar* )astr;
-  UChar* pattern_end = (UChar* )apattern_end;
-  unsigned char *end = (unsigned char* )astr_end;
-
-  onig_initialize(&enc, 1);
-  onig_set_retry_limit_in_match(DEFAULT_LIMIT);
-  onig_set_parse_depth_limit(DEFAULT_LIMIT);
-
-  r = onig_new(&reg, pattern, pattern_end,
-               options, enc, ONIG_SYNTAX_DEFAULT, &einfo);
-  if (r != ONIG_NORMAL) {
-    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
-    onig_error_code_to_str((UChar* )s, r, &einfo);
-    fprintf(stdout, "ERROR: %s\n", s);
-    onig_end();
-    return -1;
-  }
-
-  r = search(reg, str, end);
-
-  onig_free(reg);
-  onig_end();
-  return 0;
-}
-
 static OnigCaseFoldType CF = ONIGENC_CASE_FOLD_MIN;
 
 static int
@@ -196,15 +163,13 @@ int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
   remaining_size--;
 
   // copy first PATTERN_SIZE bytes off to be the pattern
-  pattern = (unsigned char *)malloc(PATTERN_SIZE+4);
-  memset(pattern, 0, PATTERN_SIZE+4);
+  pattern = (unsigned char *)malloc(PATTERN_SIZE);
   memcpy(pattern, data, PATTERN_SIZE);
   pattern_end = pattern + PATTERN_SIZE;
   data += PATTERN_SIZE;
   remaining_size -= PATTERN_SIZE;
 
-  str = (unsigned char*)malloc(remaining_size+4);
-  memset(str, 0, remaining_size+4);
+  str = (unsigned char*)malloc(remaining_size);
   memcpy(str, data, remaining_size);
   str_end = str + remaining_size;
 
diff --git a/harnesses/encode-harness.c b/harnesses/encode-harness.c
index e57fd4f..5db0512 100644
--- a/harnesses/encode-harness.c
+++ b/harnesses/encode-harness.c
@@ -3,13 +3,19 @@
  * contributed by Mark Griffin
  */
 #include <stdio.h>
-#include "oniguruma.h"
-
+#include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
 
-#define PARSE_DEPTH_LIMIT   120
-#define RETRY_LIMIT        4000
+#include "oniguruma.h"
+
+
+//#define PARSE_DEPTH_LIMIT   120
+#define RETRY_LIMIT        3500
 
 typedef unsigned char uint8_t;
 
@@ -26,6 +32,7 @@ search(regex_t* reg, unsigned char* str, unsigned char* end)
   range = end;
   r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);
   if (r >= 0) {
+#ifdef WITH_READ_MAIN
     int i;
 
     fprintf(stdout, "match at %d  (%s)\n", r,
@@ -33,17 +40,29 @@ search(regex_t* reg, unsigned char* str, unsigned char* end)
     for (i = 0; i < region->num_regs; i++) {
       fprintf(stdout, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);
     }
+#endif
   }
   else if (r == ONIG_MISMATCH) {
+#ifdef WITH_READ_MAIN
     fprintf(stdout, "search fail (%s)\n",
             ONIGENC_NAME(onig_get_encoding(reg)));
+#endif
   }
   else { /* error */
+#ifdef WITH_READ_MAIN
     char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
     onig_error_code_to_str((UChar* )s, r);
     fprintf(stdout, "ERROR: %s\n", s);
     fprintf(stdout, "  (%s)\n", ONIGENC_NAME(onig_get_encoding(reg)));
+#endif
     onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
+
+    if (r == ONIGERR_STACK_BUG ||
+        r == ONIGERR_UNDEFINED_BYTECODE ||
+        r == ONIGERR_UNEXPECTED_BYTECODE)
+      return -2;
+
     return -1;
   }
 
@@ -51,8 +70,14 @@ search(regex_t* reg, unsigned char* str, unsigned char* end)
   return 0;
 }
 
+static long INPUT_COUNT;
+static long EXEC_COUNT;
+static long EXEC_COUNT_INTERVAL;
+static long REGEX_SUCCESS_COUNT;
+static long VALID_STRING_COUNT;
+
 static int
-exec(OnigEncoding enc, OnigOptionType options,
+exec(OnigEncoding enc, OnigOptionType options, OnigSyntaxType* syntax,
      char* apattern, char* apattern_end, char* astr, UChar* end)
 {
   int r;
@@ -62,22 +87,41 @@ exec(OnigEncoding enc, OnigOptionType options,
   UChar* str     = (UChar* )astr;
   UChar* pattern_end = (UChar* )apattern_end;
 
+  EXEC_COUNT++;
+  EXEC_COUNT_INTERVAL++;
+
   onig_initialize(&enc, 1);
   onig_set_retry_limit_in_match(RETRY_LIMIT);
-  onig_set_parse_depth_limit(PARSE_DEPTH_LIMIT);
+  //onig_set_parse_depth_limit(PARSE_DEPTH_LIMIT);
 
   r = onig_new(&reg, pattern, pattern_end,
-               options, enc, ONIG_SYNTAX_DEFAULT, &einfo);
+               options, enc, syntax, &einfo);
   if (r != ONIG_NORMAL) {
     char s[ONIG_MAX_ERROR_MESSAGE_LEN];
     onig_error_code_to_str((UChar* )s, r, &einfo);
+#ifdef WITH_READ_MAIN
     fprintf(stdout, "ERROR: %s\n", s);
+#endif
     onig_end();
-    return -1;
+
+    if (r == ONIGERR_PARSER_BUG ||
+        r == ONIGERR_STACK_BUG  ||
+        r == ONIGERR_UNDEFINED_BYTECODE ||
+        r == ONIGERR_UNEXPECTED_BYTECODE) {
+      return -2;
+    }
+    else
+      return -1;
   }
+  REGEX_SUCCESS_COUNT++;
+
+  r = search(reg, pattern, pattern_end);
+  if (r == -2) return -2;
 
   if (onigenc_is_valid_mbc_string(enc, str, end) != 0) {
+    VALID_STRING_COUNT++;
     r = search(reg, str, end);
+    if (r == -2) return -2;
   }
 
   onig_free(reg);
@@ -85,52 +129,114 @@ exec(OnigEncoding enc, OnigOptionType options,
   return 0;
 }
 
-#define PATTERN_SIZE 32
-#define NUM_CONTROL_BYTES 1
-#define MIN_STR_SIZE  1
-int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
+#if 0
+static void
+output_data(char* path, const uint8_t * data, size_t size)
 {
-  if (Size <= (NUM_CONTROL_BYTES + PATTERN_SIZE + MIN_STR_SIZE))
-    return 0;
-  if (Size > 0x1000)
-    return 0;
+  int fd;
+  ssize_t n;
 
+  fd = open(path, O_CREAT|O_RDWR, S_IRUSR|S_IRGRP|S_IROTH);
+  if (fd == -1) {
+    fprintf(stderr, "ERROR: output_data(): can't open(%s)\n", path);
+    return ;
+  }
+
+  n = write(fd, (const void* )data, size);
+  if (n != size) {
+    fprintf(stderr, "ERROR: output_data(): n: %ld, size: %ld\n", n, size);
+  }
+  close(fd);
+}
+#endif
+
+
+static int
+alloc_exec(OnigEncoding enc, OnigOptionType options, OnigSyntaxType* syntax,
+           int pattern_size, size_t remaining_size, unsigned char *data)
+{
+  int r;
   unsigned char *pattern_end;
   unsigned char *str_null_end;
 
-  size_t remaining_size = Size;
-  unsigned char *data = (unsigned char *)(Data);
+  // copy first PATTERN_SIZE bytes off to be the pattern
+  unsigned char *pattern = (unsigned char *)malloc(pattern_size != 0 ? pattern_size : 1);
+  memcpy(pattern, data, pattern_size);
+  pattern_end = pattern + pattern_size;
+  data += pattern_size;
+  remaining_size -= pattern_size;
 
-  // pull off one byte to switch off
-  unsigned char encoding_choice = data[0];
-  data++;
-  remaining_size--;
+#if defined(UTF16_BE) || defined(UTF16_LE)
+  if (remaining_size % 2 == 1) remaining_size--;
+#endif
 
-  // copy first PATTERN_SIZE bytes off to be the pattern
-  unsigned char *pattern = (unsigned char *)malloc(PATTERN_SIZE+4);
-  memset(pattern, 0, PATTERN_SIZE+4);
-  memcpy(pattern, data, PATTERN_SIZE);
-  pattern_end = pattern + PATTERN_SIZE;
-  data += PATTERN_SIZE;
-  remaining_size -= PATTERN_SIZE;
-
-  unsigned char *str = (unsigned char*)malloc(remaining_size+4);
-  memset(str, 0, remaining_size+4);
+  unsigned char *str = (unsigned char*)malloc(remaining_size != 0 ? remaining_size : 1);
   memcpy(str, data, remaining_size);
   str_null_end = str + remaining_size;
 
-  int r;
-  OnigEncodingType *encodings[] = {
-	  ONIG_ENCODING_SJIS,
-	  ONIG_ENCODING_EUC_JP,
-	  ONIG_ENCODING_CP1251,
-	  ONIG_ENCODING_ISO_8859_1,
-	  ONIG_ENCODING_UTF8,
-    ONIG_ENCODING_KOI8_R,
-    ONIG_ENCODING_BIG5
+  r = exec(enc, options, syntax,
+           (char *)pattern, (char *)pattern_end,
+           (char *)str, str_null_end);
+
+  free(pattern);
+  free(str);
+  return r;
+}
+
+
+#define EXEC_PRINT_INTERVAL  10000000
+#define MAX_PATTERN_SIZE     150
+
+#ifdef SYNTAX_TEST
+#define NUM_CONTROL_BYTES      3
+#else
+#define NUM_CONTROL_BYTES      2
+#endif
+
+int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
+{
+#if !defined(UTF16_BE) && !defined(UTF16_LE)
+  static OnigEncoding encodings[] = {
+    ONIG_ENCODING_UTF8,
+    ONIG_ENCODING_UTF8,
+    ONIG_ENCODING_UTF8,
+    ONIG_ENCODING_SJIS,
+    //ONIG_ENCODING_EUC_JP,
+    ONIG_ENCODING_ISO_8859_1,
+    ONIG_ENCODING_BIG5,
+    ONIG_ENCODING_GB18030,
+    ONIG_ENCODING_EUC_TW
+  };
+  unsigned char encoding_choice;
+#endif
+
+#ifdef SYNTAX_TEST
+  static OnigSyntaxType* syntaxes[] = {
+    ONIG_SYNTAX_POSIX_EXTENDED,
+    ONIG_SYNTAX_EMACS,
+    ONIG_SYNTAX_GREP,
+    ONIG_SYNTAX_GNU_REGEX,
+    ONIG_SYNTAX_JAVA,
+    ONIG_SYNTAX_PERL_NG,
+    ONIG_SYNTAX_ONIGURUMA
   };
+  unsigned char syntax_choice;
+#endif
+
+  int r;
+  int pattern_size;
+  size_t remaining_size;
+  unsigned char *data;
+  unsigned char options_choice;
+  OnigOptionType  options;
+  OnigEncoding    enc;
+  OnigSyntaxType* syntax;
 
-  OnigEncodingType *enc;
+  INPUT_COUNT++;
+  if (Size < NUM_CONTROL_BYTES) return 0;
+
+  remaining_size = Size;
+  data = (unsigned char* )(Data);
 
 #ifdef UTF16_BE
   enc = ONIG_ENCODING_UTF16_BE;
@@ -138,24 +244,113 @@ int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
 #ifdef UTF16_LE
   enc = ONIG_ENCODING_UTF16_LE;
 #else
+  encoding_choice = data[0];
+  data++;
+  remaining_size--;
+
   int num_encodings = sizeof(encodings)/sizeof(encodings[0]);
   enc = encodings[encoding_choice % num_encodings];
 #endif
 #endif
 
-  r = exec(enc, ONIG_OPTION_NONE, (char *)pattern, (char *)pattern_end,
-           (char *)str, str_null_end);
+#ifdef SYNTAX_TEST
+  syntax_choice = data[0];
+  data++;
+  remaining_size--;
 
-  free(pattern);
-  free(str);
+  int num_syntaxes = sizeof(syntaxes)/sizeof(syntaxes[0]);
+  syntax = syntaxes[syntax_choice % num_syntaxes];
+#else
+  syntax = ONIG_SYNTAX_DEFAULT;
+#endif
+
+  options_choice = data[0];
+  options = (options_choice % 2 == 0) ? ONIG_OPTION_NONE : ONIG_OPTION_IGNORECASE;
+  data++;
+  remaining_size--;
+
+#ifdef WITH_READ_MAIN
+#ifdef SYNTAX_TEST
+  fprintf(stdout, "enc: %s, syntax: %d, options: %u\n",
+          ONIGENC_NAME(enc), (int )(syntax_choice % num_syntaxes), options);
+#else
+  fprintf(stdout, "enc: %s, options: %u\n", ONIGENC_NAME(enc), options);
+#endif
+#endif
 
+#ifdef WITH_READ_MAIN
+  int max_pattern_size;
+
+  if (remaining_size == 0)
+    max_pattern_size = 0;
+  else {
+    max_pattern_size = remaining_size - 1;
+    if (max_pattern_size > MAX_PATTERN_SIZE)
+      max_pattern_size = MAX_PATTERN_SIZE;
+
+#if defined(UTF16_BE) || defined(UTF16_LE)
+    if (max_pattern_size % 2 == 1) max_pattern_size--;
+#endif
+  }
+
+  for (pattern_size = 0; pattern_size <= max_pattern_size; ) {
+    fprintf(stdout, "pattern_size: %d\n", pattern_size);
+    r = alloc_exec(enc, options, syntax, pattern_size, remaining_size, data);
+    if (r == -2) {
+      //output_data("parser-bug", Data, Size);
+      exit(-2);
+    }
+
+#if defined(UTF16_BE) || defined(UTF16_LE)
+    pattern_size += 2;
+#else
+    pattern_size++;
+#endif
+  }
+
+#else /* WITH_READ_MAIN */
+
+  if (remaining_size == 0)
+    pattern_size = 0;
+  else {
+    pattern_size = INPUT_COUNT % remaining_size;
+    if (pattern_size > MAX_PATTERN_SIZE)
+      pattern_size = MAX_PATTERN_SIZE;
+
+#if defined(UTF16_BE) || defined(UTF16_LE)
+    if (pattern_size % 2 == 1) pattern_size--;
+#endif
+  }
+
+  r = alloc_exec(enc, options, syntax, pattern_size, remaining_size, data);
+  if (r == -2) {
+    //output_data("parser-bug", Data, Size);
+    exit(-2);
+  }
+#endif /* else WITH_READ_MAIN */
+
+  if (EXEC_COUNT_INTERVAL == EXEC_PRINT_INTERVAL) {
+    char d[64];
+    time_t t;
+    float fexec, freg, fvalid;
+
+    t = time(NULL);
+    strftime(d, sizeof(d), "%m/%d %H:%M:%S", localtime(&t));
+
+    fexec  = (float )EXEC_COUNT / INPUT_COUNT;
+    freg   = (float )REGEX_SUCCESS_COUNT / INPUT_COUNT;
+    fvalid = (float )VALID_STRING_COUNT / INPUT_COUNT;
+
+    fprintf(stdout, "%s: %ld: EXEC:%.2f, REG:%.2f, VALID:%.2f\n",
+            d, EXEC_COUNT, fexec, freg, fvalid);
+
+    EXEC_COUNT_INTERVAL = 0;
+  }
   return r;
 }
 
 #ifdef WITH_READ_MAIN
 
-#include <unistd.h>
-
 extern int main(int argc, char* argv[])
 {
   size_t n;
diff --git a/harnesses/libfuzzer-onig.cpp b/harnesses/libfuzzer-onig.cpp
new file mode 100644
index 0000000..526c826
--- /dev/null
+++ b/harnesses/libfuzzer-onig.cpp
@@ -0,0 +1,45 @@
+/* libfuzzer test code for oniguruma
+ * author: Hanno Böck, license: CC0/public domain
+
+Usage:
+* compile oniguruma with something like
+    ./configure CC=clang LD=clang CFLAGS="-fsanitize-coverage=edge -fsanitize=address" \
+    LDFLAGS="-fsanitize-coverage=edge -fsanitize=address"
+* Compile libfuzzer stub and link against static libonig.a and libFuzzer.a:
+    clang++ libfuzzer-onig.cpp src/.libs/libonig.a libFuzzer.a -o libfuzzer-onig \
+    -fsanitize-coverage=edge -fsanitize=address
+* Put sample patterns in directory "in/"
+* Run
+    ./libfuzzer-onig in
+
+Consult libfuzzer docs for further details and how to create libFuzzer.a:
+http://llvm.org/docs/LibFuzzer.html
+
+ */
+#include <stdint.h>
+#include <string.h>
+#include <oniguruma.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
+{
+  regex_t *reg;
+  OnigEncoding enc;
+
+  enc = ONIG_ENCODING_UTF8;
+
+#ifdef FULL_TEST
+  onig_initialize(&enc, 1);
+  onig_set_retry_limit_in_match(120);
+  onig_set_parse_depth_limit(120);
+#endif
+
+  if (onig_new(&reg, Data, Data + Size, ONIG_OPTION_DEFAULT, enc,
+               ONIG_SYNTAX_DEFAULT, 0) == 0)
+    onig_free(reg);
+
+#ifdef FULL_TEST
+  onig_end();
+#endif
+
+  return 0;
+}
diff --git a/harnesses/makefile b/harnesses/makefile
new file mode 100644
index 0000000..dfd84de
--- /dev/null
+++ b/harnesses/makefile
@@ -0,0 +1,69 @@
+# makefile for harness
+SRC = ../src
+CFLAGS   = -I$(SRC) -Wall -g -fsanitize=fuzzer,address -fno-omit-frame-pointer
+CFLAGS_M = -I$(SRC) -Wall -g -fsanitize=fuzzer-no-link,address -fno-omit-frame-pointer -DWITH_READ_MAIN
+ONIG_LIB = $(SRC)/.libs/libonig.a
+LIBS     = $(ONIG_LIB)
+
+TARGETS = encode-libfuzzer syntax-libfuzzer \
+          utf16-be-libfuzzer utf16-le-libfuzzer main-encode main-syntax \
+          main-utf16-be main-utf16-le main-regset regset-libfuzzer
+
+OTHER_TARGETS = libfuzzer-onig libfuzzer-onig-full \
+          deluxe-encode-libfuzzer main-deluxe-encode
+
+
+default: $(TARGETS)
+
+encode-libfuzzer: encode-harness.c $(ONIG_LIB)
+	clang $(CFLAGS) $< $(LIBS) -o $@
+
+syntax-libfuzzer: encode-harness.c $(ONIG_LIB)
+	clang -DSYNTAX_TEST $(CFLAGS) $< $(LIBS) -o $@
+
+deluxe-encode-libfuzzer: deluxe-encode-harness.c $(ONIG_LIB)
+	clang $(CFLAGS) $< $(LIBS) -o $@
+
+utf16-be-libfuzzer: encode-harness.c $(ONIG_LIB)
+	clang -DUTF16_BE $(CFLAGS) $< $(LIBS) -o $@
+
+utf16-le-libfuzzer: encode-harness.c $(ONIG_LIB)
+	clang -DUTF16_LE $(CFLAGS) $< $(LIBS) -o $@
+
+regset-libfuzzer: regset-harness.c $(ONIG_LIB)
+	clang $(CFLAGS) $< $(LIBS) -o $@
+
+main-encode: encode-harness.c $(ONIG_LIB)
+	clang $(CFLAGS_M) $< $(LIBS) -o $@
+
+main-syntax: encode-harness.c $(ONIG_LIB)
+	clang -DSYNTAX_TEST $(CFLAGS_M) $< $(LIBS) -o $@
+
+main-deluxe-encode: deluxe-encode-harness.c $(ONIG_LIB)
+	clang $(CFLAGS_M) $< $(LIBS) -o $@
+
+main-utf16-be: encode-harness.c $(ONIG_LIB)
+	clang -DUTF16_BE $(CFLAGS_M) $< $(LIBS) -o $@
+
+main-utf16-le: encode-harness.c $(ONIG_LIB)
+	clang -DUTF16_LE $(CFLAGS_M) $< $(LIBS) -o $@
+
+main-regset: regset-harness.c $(ONIG_LIB)
+	clang $(CFLAGS_M) $< $(LIBS) -o $@
+
+libfuzzer-onig: libfuzzer-onig.cpp $(ONIG_LIB)
+	clang++ $(CFLAGS) $< $(LIBS) -o $@
+
+libfuzzer-onig-full: libfuzzer-onig.cpp $(ONIG_LIB)
+	clang++ -DFULL_TEST $(CFLAGS) $< $(LIBS) -o $@
+
+
+$(ONIG_LIB):
+	cd ..; make clean
+	#cd ..; autoreconf -vfi
+	cd ..; ./configure CC=clang LD=clang CFLAGS="-g -fsanitize=address -fno-omit-frame-pointer" LDFLAGS="-g -fsanitize=address -fno-omit-frame-pointer"
+	cd ..; make -j4
+
+
+clean:
+	rm -f $(TARGETS) $(OTHER_TARGETS)
diff --git a/harnesses/regset-harness.c b/harnesses/regset-harness.c
new file mode 100644
index 0000000..b4b7e20
--- /dev/null
+++ b/harnesses/regset-harness.c
@@ -0,0 +1,379 @@
+/*
+ * regset-harness.c
+ * Copyright (c) 2019  K.Kosako
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
+
+#include "oniguruma.h"
+
+
+#define RETRY_LIMIT    500
+
+#ifdef WITH_READ_MAIN
+//#define CHECK_EACH_REGEX_SEARCH_TIME
+#endif
+
+#define MAX_REG_NUM   256
+
+typedef unsigned char uint8_t;
+static OnigEncoding ENC;
+
+#ifdef CHECK_EACH_REGEX_SEARCH_TIME
+static double
+get_sec(struct timespec* ts, struct timespec* te)
+{
+  double t;
+
+  t = (te->tv_sec - ts->tv_sec) +
+      (double )(te->tv_nsec - ts->tv_nsec) / 1000000000.0;
+  return t;
+}
+
+static int
+check_each_regex_search_time(OnigRegSet* set, unsigned char* str, unsigned char* end)
+{
+  int n;
+  int i;
+  int r;
+  OnigRegion* region;
+
+  n = onig_regset_number_of_regex(set);
+  region = onig_region_new();
+
+  for (i = 0; i < n; i++) {
+    regex_t* reg;
+    unsigned char* start;
+    unsigned char* range;
+    struct timespec ts1, ts2;
+    double t;
+
+    reg = onig_regset_get_regex(set, i);
+    start = str;
+    range = end;
+
+    clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts1);
+
+    r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);
+
+    clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts2);
+    t = get_sec(&ts1, &ts2);
+
+    fprintf(stdout, "regex search time %d: %6.2lfmsec.\n", i, t * 1000.0);
+  }
+
+  onig_region_free(region, 1);
+  return 0;
+}
+#endif
+
+static int
+search(OnigRegSet* set, OnigRegSetLead lead, unsigned char* str, unsigned char* end)
+{
+  int r;
+  int match_pos;
+  unsigned char *start, *range;
+
+  start = str;
+  range = end;
+  r = onig_regset_search(set, str, end, start, range, lead,
+                         ONIG_OPTION_NONE, &match_pos);
+  if (r >= 0) {
+#ifdef WITH_READ_MAIN
+    int i;
+    int match_index;
+    OnigRegion* region;
+
+    match_index = r;
+    fprintf(stdout, "match reg index: %d, pos: %d  (%s)\n",
+            match_index, match_pos, ONIGENC_NAME(ENC));
+    region = onig_regset_get_region(set, match_index);
+    if (region == 0) {
+      fprintf(stdout, "ERROR: can't get region.\n");
+      return -1;
+    }
+
+    for (i = 0; i < region->num_regs; i++) {
+      fprintf(stdout, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);
+    }
+#endif
+  }
+  else if (r == ONIG_MISMATCH) {
+#ifdef WITH_READ_MAIN
+    fprintf(stdout, "search fail (%s)\n", ONIGENC_NAME(ENC));
+#endif
+  }
+  else { /* error */
+#ifdef WITH_READ_MAIN
+    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
+    onig_error_code_to_str((UChar* )s, r);
+    fprintf(stdout, "ERROR: %s\n", s);
+    fprintf(stdout, "  (%s)\n", ONIGENC_NAME(ENC));
+#endif
+    return -1;
+  }
+
+  return 0;
+}
+
+static long INPUT_COUNT;
+static long EXEC_COUNT;
+static long EXEC_COUNT_INTERVAL;
+static long REGEX_SUCCESS_COUNT;
+static long VALID_STRING_COUNT;
+
+static int
+exec(OnigEncoding enc, int reg_num, int init_reg_num,
+     UChar* pat[], UChar* pat_end[],
+     OnigRegSetLead lead, UChar* str, UChar* end)
+{
+  int r;
+  int i, j;
+  OnigRegSet* set;
+  regex_t* reg;
+  OnigOptionType options;
+  OnigErrorInfo einfo;
+  regex_t* regs[MAX_REG_NUM];
+
+  EXEC_COUNT++;
+  EXEC_COUNT_INTERVAL++;
+
+  options = (EXEC_COUNT % 4 == 0) ? ONIG_OPTION_IGNORECASE : ONIG_OPTION_NONE;
+
+  onig_initialize(&enc, 1);
+  onig_set_retry_limit_in_match(RETRY_LIMIT);
+
+  for (i = 0; i < init_reg_num; i++) {
+    r = onig_new(&regs[i], pat[i], pat_end[i], options, ENC,
+                 ONIG_SYNTAX_DEFAULT, &einfo);
+    if (r != 0) {
+#ifdef WITH_READ_MAIN
+      char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
+      onig_error_code_to_str((UChar* )s, r, &einfo);
+      fprintf(stdout, "ERROR: index: %d, %s\n", i, s);
+#endif
+
+      for (j = 0; j < i; j++) onig_free(regs[j]);
+
+      onig_end();
+
+      if (r == ONIGERR_PARSER_BUG ||
+          r == ONIGERR_STACK_BUG  ||
+          r == ONIGERR_UNDEFINED_BYTECODE ||
+          r == ONIGERR_UNEXPECTED_BYTECODE) {
+        return -2;
+      }
+      else
+        return -1;
+    }
+  }
+
+  r = onig_regset_new(&set, init_reg_num, regs);
+  if (r != 0) {
+    for (i = 0; i < init_reg_num; i++) {
+      onig_free(regs[i]);
+    }
+    onig_end();
+    return -1;
+  }
+
+  for (i = init_reg_num; i < reg_num; i++) {
+    r = onig_new(&reg, pat[i], pat_end[i], options, ENC,
+                 ONIG_SYNTAX_DEFAULT, &einfo);
+    if (r != 0) {
+#ifdef WITH_READ_MAIN
+      char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
+      onig_error_code_to_str((UChar* )s, r, &einfo);
+      fprintf(stdout, "ERROR: index: %d, %s\n", i, s);
+#endif
+      onig_regset_free(set);
+      onig_end();
+
+      if (r == ONIGERR_PARSER_BUG ||
+          r == ONIGERR_STACK_BUG  ||
+          r == ONIGERR_UNDEFINED_BYTECODE ||
+          r == ONIGERR_UNEXPECTED_BYTECODE) {
+        return -2;
+      }
+      else
+        return -1;
+    }
+
+    r = onig_regset_add(set, reg);
+    if (r != 0) {
+      onig_regset_free(set);
+      onig_end();
+      fprintf(stdout, "ERROR: onig_regset_add(): %d\n", i);
+      return r;
+    }
+  }
+
+  REGEX_SUCCESS_COUNT++;
+
+  if (onigenc_is_valid_mbc_string(enc, str, end) != 0) {
+    VALID_STRING_COUNT++;
+    r = search(set, lead, str, end);
+#ifdef CHECK_EACH_REGEX_SEARCH_TIME
+    r = check_each_regex_search_time(set, str, end);
+#endif
+  }
+
+  onig_regset_free(set);
+  onig_end();
+  return 0;
+}
+
+#define MAX_PATTERN_SIZE      30
+#define NUM_CONTROL_BYTES      3
+
+#define EXEC_PRINT_INTERVAL  2000000
+
+static int MaxRegNum;
+static int MaxInitRegNum;
+
+extern int
+LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
+{
+  int r, i;
+  int pattern_size;
+  unsigned char *str_null_end;
+  size_t remaining_size;
+  unsigned char *data;
+  unsigned int reg_num;
+  unsigned int init_reg_num;
+  unsigned char* pat[256];
+  unsigned char* pat_end[256];
+  int len;
+  unsigned int lead_num;
+  OnigRegSetLead lead;
+
+  INPUT_COUNT++;
+
+  if (Size < NUM_CONTROL_BYTES) return 0;
+
+  remaining_size = Size;
+  data = (unsigned char* )(Data);
+
+  reg_num = data[0];
+  data++;
+  remaining_size--;
+
+  init_reg_num = data[0];
+  data++;
+  remaining_size--;
+
+  lead_num = data[0];
+  data++;
+  remaining_size--;
+  lead = (lead_num % 2 == 0 ? ONIG_REGSET_POSITION_LEAD : ONIG_REGSET_REGEX_LEAD);
+
+  if (remaining_size < reg_num * 2) {
+    reg_num = reg_num % 15;  // zero is OK.
+  }
+
+  init_reg_num %= (reg_num + 1);
+
+  if (MaxRegNum < reg_num)
+    MaxRegNum = reg_num;
+
+  if (MaxInitRegNum < init_reg_num)
+    MaxInitRegNum = init_reg_num;
+
+  if (reg_num == 0)
+    pattern_size = 1;
+  else
+    pattern_size = remaining_size / (reg_num * 2);
+    
+  if (pattern_size > MAX_PATTERN_SIZE)
+    pattern_size = MAX_PATTERN_SIZE;
+
+  len = pattern_size * reg_num;
+  if (len == 0) len = 1;
+
+  for (i = 0; i < reg_num; i++) {
+    pat[i] = (unsigned char* )malloc(pattern_size);
+    memcpy(pat[i], data, pattern_size);
+    pat_end[i] = pat[i] + pattern_size;
+    data += pattern_size;
+    remaining_size -= pattern_size;
+  }
+
+  unsigned char *str = (unsigned char*)malloc(remaining_size != 0 ? remaining_size : 1);
+  memcpy(str, data, remaining_size);
+  str_null_end = str + remaining_size;
+
+#ifdef WITH_READ_MAIN
+  fprintf(stdout, "reg num: %d, pattern size: %d, lead: %s\n",
+          reg_num, pattern_size,
+          lead == ONIG_REGSET_POSITION_LEAD ? "position" : "regex");
+
+  if (reg_num != 0) {
+    unsigned char* p;
+    i = 0;
+    p = pat[0];
+    while (p < pat_end[0]) {
+      fprintf(stdout, " 0x%02x", (int )*p++);
+      i++;
+      if (i % 8 == 0) fprintf(stdout, "\n");
+    }
+    fprintf(stdout, "\n");
+  }
+#endif
+
+  ENC = ONIG_ENCODING_UTF8;
+
+  r = exec(ENC, reg_num, init_reg_num, pat, pat_end, lead, str, str_null_end);
+
+  for (i = 0; i < reg_num; i++) {
+    free(pat[i]);
+  }
+  free(str);
+
+  if (r == -2) {
+    //output_data("parser-bug", Data, Size);
+    exit(-2);
+  }
+
+  if (EXEC_COUNT_INTERVAL == EXEC_PRINT_INTERVAL) {
+    char d[64];
+    time_t t;
+    float fexec, freg, fvalid;
+
+    t = time(NULL);
+    strftime(d, sizeof(d), "%m/%d %H:%M:%S", localtime(&t));
+
+    fexec  = (float )EXEC_COUNT / INPUT_COUNT;
+    freg   = (float )REGEX_SUCCESS_COUNT / INPUT_COUNT;
+    fvalid = (float )VALID_STRING_COUNT / INPUT_COUNT;
+
+    fprintf(stdout, "%s: %ld: EXEC:%.2f, REG:%.2f, VALID:%.2f MAX REG:%d-%d\n",
+            d, EXEC_COUNT, fexec, freg, fvalid, MaxRegNum, MaxInitRegNum);
+
+    EXEC_COUNT_INTERVAL = 0;
+  }
+  return r;
+}
+
+#ifdef WITH_READ_MAIN
+
+extern int main(int argc, char* argv[])
+{
+  size_t n;
+  uint8_t Data[10000];
+
+  n = read(0, Data, sizeof(Data));
+  fprintf(stdout, "n: %ld\n", n);
+  LLVMFuzzerTestOneInput(Data, n);
+
+  return 0;
+}
+#endif /* WITH_READ_MAIN */
diff --git a/harnesses/syntax-harness.c b/harnesses/syntax-harness.c
deleted file mode 100644
index 0fb3587..0000000
--- a/harnesses/syntax-harness.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * syntax-harness.c
- * contributed by Mark Griffin
- */
-#include <stdio.h>
-#include <string.h>
-#include "oniguruma.h"
-
-#include <stdlib.h>
-
-#define DEFAULT_LIMIT 120
-typedef unsigned char uint8_t;
-
-extern int exec(OnigSyntaxType* syntax, char* apattern, char* astr)
-{
-  int r;
-  unsigned char *start, *range, *end;
-  regex_t* reg;
-  OnigErrorInfo einfo;
-  OnigRegion *region;
-  UChar* pattern = (UChar* )apattern;
-  UChar* str     = (UChar* )astr;
-
-  r = onig_new(&reg, pattern, pattern + strlen((char* )pattern),
-               ONIG_OPTION_DEFAULT, ONIG_ENCODING_ASCII, syntax, &einfo);
-  if (r != ONIG_NORMAL) {
-    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
-    onig_error_code_to_str((UChar* )s, r, &einfo);
-    fprintf(stdout, "ERROR: %s\n", s);
-    return -1;
-  }
-
-  region = onig_region_new();
-
-  end   = str + strlen((char* )str);
-  start = str;
-  range = end;
-  r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);
-  if (r >= 0) {
-    int i;
-
-    fprintf(stdout, "match at %d\n", r);
-    for (i = 0; i < region->num_regs; i++) {
-      fprintf(stdout, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);
-    }
-  }
-  else if (r == ONIG_MISMATCH) {
-    fprintf(stdout, "search fail\n");
-  }
-  else { /* error */
-    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
-    onig_error_code_to_str((UChar* )s, r);
-    fprintf(stdout, "ERROR: %s\n", s);
-    onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
-    onig_free(reg);
-    return -1;
-  }
-
-  onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
-  onig_free(reg);
-  return 0;
-}
-
-#define PATTERN_SIZE 64
-#define NUM_CONTROL_BYTES 1
-#define MIN_STR_SIZE  1
-int LLVMFuzzerTestOneInput(const uint8_t * Data, size_t Size)
-{
-  if (Size <= (NUM_CONTROL_BYTES + PATTERN_SIZE + MIN_STR_SIZE))
-    return 0;
-  if (Size > 0x1000)
-    return 0;
-  size_t remaining_size = Size;
-  unsigned char *data = (unsigned char *)(Data);
-
-  // pull off one byte to switch syntax choice
-  unsigned char syntax_choice = data[0];
-  data++;
-  remaining_size--;
-
-  // copy first PATTERN_SIZE bytes off to be the pattern
-  unsigned char *pattern = (unsigned char *)malloc(PATTERN_SIZE+1);
-  memset(pattern, 0, PATTERN_SIZE+1);
-  memcpy(pattern, data, PATTERN_SIZE);
-  data += PATTERN_SIZE;
-  remaining_size -= PATTERN_SIZE;
-
-  unsigned char *str = (unsigned char*)malloc(remaining_size+1);
-  memset(str, 0, remaining_size+1);
-  memcpy(str, data, remaining_size);
-  
-  OnigEncoding use_encs[] = { ONIG_ENCODING_ASCII };
-  onig_initialize(use_encs, sizeof(use_encs)/sizeof(use_encs[0]));
-
-  onig_set_retry_limit_in_match(DEFAULT_LIMIT);
-  onig_set_parse_depth_limit(DEFAULT_LIMIT);
-
-  OnigSyntaxType *syntaxes[] = {
-    ONIG_SYNTAX_POSIX_EXTENDED,
-    ONIG_SYNTAX_EMACS,
-    ONIG_SYNTAX_GREP,
-    ONIG_SYNTAX_GNU_REGEX,
-    ONIG_SYNTAX_JAVA,
-    ONIG_SYNTAX_PERL_NG,
-    ONIG_SYNTAX_RUBY,
-    ONIG_SYNTAX_ONIGURUMA,
-  }; 
-  OnigSyntaxType *syntax = syntaxes[syntax_choice % 8];
-  
-  int r;
-  r = exec(syntax, (char *)pattern, (char *)str);
-  // r = exec(ONIG_SYNTAX_JAVA, "\\p{XDigit}\\P{XDigit}[a-c&&b-g]", "bgc");
-
-  onig_end();
-
-  free(pattern);
-  free(str);
-
-  return 0;
-}