Move fuzzers to testing/fuzzers.

Move them out of testing/libfuzzer, to make it possible to pull
libfuzzer into that directory. Leave testing/libfuzzer/BUILD.gn there
for now as a transitional build file.

BUG=pdfium:1088

Change-Id: I4126d89dd3e075ac63477a4860e029c135866dbe
Reviewed-on: https://pdfium-review.googlesource.com/32896
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/testing/fuzzers/pdf_codec_fax_fuzzer.cc b/testing/fuzzers/pdf_codec_fax_fuzzer.cc
new file mode 100644
index 0000000000..f6cc1e7200
--- /dev/null
+++ b/testing/fuzzers/pdf_codec_fax_fuzzer.cc
@@ -0,0 +1,43 @@
+// Copyright 2016 The PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cstdint>
+#include <memory>
+
+#include "core/fxcodec/codec/ccodec_faxmodule.h"
+#include "core/fxcodec/codec/ccodec_scanlinedecoder.h"
+
+static int GetInteger(const uint8_t* data) {
+  return data[0] | data[1] << 8 | data[2] << 16 | data[3] << 24;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  const int kParameterSize = 21;
+  if (size < kParameterSize)
+    return 0;
+
+  int width = GetInteger(data);
+  int height = GetInteger(data + 4);
+  int K = GetInteger(data + 8);
+  int Columns = GetInteger(data + 12);
+  int Rows = GetInteger(data + 16);
+  bool EndOfLine = !(data[20] & 0x01);
+  bool ByteAlign = !(data[20] & 0x02);
+  bool BlackIs1 = !(data[20] & 0x04);
+  data += kParameterSize;
+  size -= kParameterSize;
+
+  CCodec_FaxModule fax_module;
+  std::unique_ptr<CCodec_ScanlineDecoder> decoder(
+      fax_module.CreateDecoder(data, size, width, height, K, EndOfLine,
+                               ByteAlign, BlackIs1, Columns, Rows));
+
+  if (decoder) {
+    int line = 0;
+    while (decoder->GetScanline(line))
+      line++;
+  }
+
+  return 0;
+}