FuzzingInterfaceStream.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*

 * Interface implementation for the unified fuzzing interface

*/

#include "nsIFile.h"

#include "nsIPrefService.h"

#include "nsIProperties.h"

#include "FuzzingInterfaceStream.h"

#include "mozilla/Assertions.h"

#ifndef JS_STANDALONE

#  include "nsNetUtil.h"

#endif

namespace mozilla {

#ifdef AFLFUZZ

void afl_interface_stream(const char* testFile,

                          FuzzingTestFuncStream testFunc) {

  nsresult rv;

  nsCOMPtr<nsIProperties> dirService =

      do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);

  MOZ_RELEASE_ASSERT(dirService != nullptr);

  nsCOMPtr<nsIFile> file;

  rv = dirService->Get(NS_OS_CURRENT_WORKING_DIR, NS_GET_IID(nsIFile),

                       getter_AddRefs(file));

  MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));

  file->AppendNative(nsDependentCString(testFile));

  while (__AFL_LOOP(1000)) {

    nsCOMPtr<nsIInputStream> inputStream;

    rv = NS_NewLocalFileInputStream(getter_AddRefs(inputStream), file);

    MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));

    if (!NS_InputStreamIsBuffered(inputStream)) {

      nsCOMPtr<nsIInputStream> bufStream;

      rv = NS_NewBufferedInputStream(getter_AddRefs(bufStream),

                                     inputStream.forget(), 1024);

      MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));

      inputStream = bufStream;

    testFunc(inputStream.forget());

#endif

}  // namespace mozilla