From 40f3d0030e6e98bcb02d6523e5ee48497dec49a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff.email>
Date: Wed, 7 Aug 2019 09:32:48 +0200
Subject: New upstream version 6.9.3

---
 harnesses/encode-harness.c | 170 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 harnesses/encode-harness.c

(limited to 'harnesses/encode-harness.c')

diff --git a/harnesses/encode-harness.c b/harnesses/encode-harness.c
new file mode 100644
index 0000000..e57fd4f
--- /dev/null
+++ b/harnesses/encode-harness.c
@@ -0,0 +1,170 @@
+/*
+ * encode-harness.c
+ * contributed by Mark Griffin
+ */
+#include <stdio.h>
+#include "oniguruma.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#define PARSE_DEPTH_LIMIT   120
+#define RETRY_LIMIT        4000
+
+typedef unsigned char uint8_t;
+
+static int
+search(regex_t* reg, unsigned char* str, unsigned char* end)
+{
+  int r;
+  unsigned char *start, *range;
+  OnigRegion *region;
+
+  region = onig_region_new();
+
+  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  (%s)\n", r,
+            ONIGENC_NAME(onig_get_encoding(reg)));
+    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 (%s)\n",
+            ONIGENC_NAME(onig_get_encoding(reg)));
+  }
+  else { /* error */
+    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)));
+    onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
+    return -1;
+  }
+
+  onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
+  return 0;
+}
+
+static int
+exec(OnigEncoding enc, OnigOptionType options,
+     char* apattern, char* apattern_end, char* astr, UChar* end)
+{
+  int r;
+  regex_t* reg;
+  OnigErrorInfo einfo;
+  UChar* pattern = (UChar* )apattern;
+  UChar* str     = (UChar* )astr;
+  UChar* pattern_end = (UChar* )apattern_end;
+
+  onig_initialize(&enc, 1);
+  onig_set_retry_limit_in_match(RETRY_LIMIT);
+  onig_set_parse_depth_limit(PARSE_DEPTH_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;
+  }
+
+  if (onigenc_is_valid_mbc_string(enc, str, end) != 0) {
+    r = search(reg, str, end);
+  }
+
+  onig_free(reg);
+  onig_end();
+  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 (Size <= (NUM_CONTROL_BYTES + PATTERN_SIZE + MIN_STR_SIZE))
+    return 0;
+  if (Size > 0x1000)
+    return 0;
+
+  unsigned char *pattern_end;
+  unsigned char *str_null_end;
+
+  size_t remaining_size = Size;
+  unsigned char *data = (unsigned char *)(Data);
+
+  // pull off one byte to switch off
+  unsigned char encoding_choice = data[0];
+  data++;
+  remaining_size--;
+
+  // 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);
+  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
+  };
+
+  OnigEncodingType *enc;
+
+#ifdef UTF16_BE
+  enc = ONIG_ENCODING_UTF16_BE;
+#else
+#ifdef UTF16_LE
+  enc = ONIG_ENCODING_UTF16_LE;
+#else
+  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);
+
+  free(pattern);
+  free(str);
+
+  return r;
+}
+
+#ifdef WITH_READ_MAIN
+
+#include <unistd.h>
+
+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 */
-- 
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