/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* 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/. */

/*

 * Test harness for XPCOM objects, providing a scoped XPCOM initializer,

 * nsCOMPtr, nsRefPtr, do_CreateInstance, do_GetService, ns(Auto|C|)String,

 * and stdio.h/stdlib.h.

 */

#ifndef FuzzerTestHarness_h__

#define FuzzerTestHarness_h__

#include "mozilla/ArrayUtils.h"

#include "mozilla/Attributes.h"

#include "prenv.h"

#include "nsComponentManagerUtils.h"

#include "nsServiceManagerUtils.h"

#include "nsCOMPtr.h"

#include "nsAutoPtr.h"

#include "nsString.h"

#include "nsAppDirectoryServiceDefs.h"

#include "nsDirectoryServiceDefs.h"

#include "nsDirectoryServiceUtils.h"

#include "nsIDirectoryService.h"

#include "nsIFile.h"

#include "nsIProperties.h"

#include "nsIObserverService.h"

#include "nsXULAppAPI.h"

#include <stdio.h>

#include <stdlib.h>

#include <stdarg.h>

namespace {

static uint32_t gFailCount = 0;

/**

 * Prints the given failure message and arguments using printf, prepending

 * "TEST-UNEXPECTED-FAIL " for the benefit of the test harness and

 * appending "\n" to eliminate having to type it at each call site.

 */

MOZ_FORMAT_PRINTF(1, 2) void fail(const char* msg, ...)

{

  va_list ap;

  printf("TEST-UNEXPECTED-FAIL | ");

  va_start(ap, msg);

  vprintf(msg, ap);

  va_end(ap);

  putchar('\n');

  ++gFailCount;

}

//-----------------------------------------------------------------------------

class ScopedXPCOM : public nsIDirectoryServiceProvider2

{

  public:

    NS_DECL_ISUPPORTS

    explicit ScopedXPCOM(const char* testName,

                         nsIDirectoryServiceProvider *dirSvcProvider = nullptr)

    : mDirSvcProvider(dirSvcProvider)

    {

      mTestName = testName;

      printf("Running %s tests...\n", mTestName);

      nsresult rv = NS_InitXPCOM2(&mServMgr, nullptr, this);

      if (NS_FAILED(rv))

      {

        fail("NS_InitXPCOM2 returned failure code 0x%" PRIx32, static_cast<uint32_t>(rv));

        mServMgr = nullptr;

        return;

      }

    }

    ~ScopedXPCOM()

    {

      // If we created a profile directory, we need to remove it.

      if (mProfD) {

        nsCOMPtr<nsIObserverService> os =

          do_GetService(NS_OBSERVERSERVICE_CONTRACTID);

        MOZ_ASSERT(os);

        if (os) {

          MOZ_ALWAYS_SUCCEEDS(os->NotifyObservers(nullptr, "profile-change-net-teardown", nullptr));

          MOZ_ALWAYS_SUCCEEDS(os->NotifyObservers(nullptr, "profile-change-teardown", nullptr));

          MOZ_ALWAYS_SUCCEEDS(os->NotifyObservers(nullptr, "profile-before-change", nullptr));

          MOZ_ALWAYS_SUCCEEDS(os->NotifyObservers(nullptr, "profile-before-change-qm", nullptr));

          MOZ_ALWAYS_SUCCEEDS(os->NotifyObservers(nullptr, "profile-before-change-telemetry", nullptr));

        }

        if (NS_FAILED(mProfD->Remove(true))) {

          NS_WARNING("Problem removing profile directory");

        }

        mProfD = nullptr;

      }

      if (mServMgr)

      {

        NS_RELEASE(mServMgr);

        nsresult rv = NS_ShutdownXPCOM(nullptr);

        if (NS_FAILED(rv))

        {

          fail("XPCOM shutdown failed with code 0x%" PRIx32, static_cast<uint32_t>(rv));

          exit(1);

        }

      }

      printf("Finished running %s tests.\n", mTestName);

    }

    already_AddRefed<nsIFile> GetProfileDirectory()

    {

      if (mProfD) {

        nsCOMPtr<nsIFile> copy = mProfD;

        return copy.forget();

      }

      // Create a unique temporary folder to use for this test.

      // Note that runcppunittests.py will run tests with a temp

      // directory as the cwd, so just put something under that.

      nsCOMPtr<nsIFile> profD;

      nsresult rv = NS_GetSpecialDirectory(NS_OS_CURRENT_PROCESS_DIR,

                                           getter_AddRefs(profD));

      NS_ENSURE_SUCCESS(rv, nullptr);

      rv = profD->Append(NS_LITERAL_STRING("cpp-unit-profd"));

      NS_ENSURE_SUCCESS(rv, nullptr);

      rv = profD->CreateUnique(nsIFile::DIRECTORY_TYPE, 0755);

      NS_ENSURE_SUCCESS(rv, nullptr);

      mProfD = profD;

      return profD.forget();

    }

    already_AddRefed<nsIFile> GetGREDirectory()

    {

      if (mGRED) {

        nsCOMPtr<nsIFile> copy = mGRED;

        return copy.forget();

      }

      char* env = PR_GetEnv("MOZ_XRE_DIR");

      nsCOMPtr<nsIFile> greD;

      if (env) {

        NS_NewLocalFile(NS_ConvertUTF8toUTF16(env), false,

                        getter_AddRefs(greD));

      }

      mGRED = greD;

      return greD.forget();

    }

    already_AddRefed<nsIFile> GetGREBinDirectory()

    {

      if (mGREBinD) {

        nsCOMPtr<nsIFile> copy = mGREBinD;

        return copy.forget();

      }

      nsCOMPtr<nsIFile> greD = GetGREDirectory();

      if (!greD) {

        return greD.forget();

      }

      greD->Clone(getter_AddRefs(mGREBinD));

#ifdef XP_MACOSX

      nsAutoCString leafName;

      mGREBinD->GetNativeLeafName(leafName);

      if (leafName.EqualsLiteral("Resources")) {

        mGREBinD->SetNativeLeafName(NS_LITERAL_CSTRING("MacOS"));

      }

#endif

      nsCOMPtr<nsIFile> copy = mGREBinD;

      return copy.forget();

    }

    ////////////////////////////////////////////////////////////////////////////

    //// nsIDirectoryServiceProvider

    NS_IMETHODIMP GetFile(const char *aProperty, bool *_persistent,

                          nsIFile **_result) override

    {

      // If we were supplied a directory service provider, ask it first.

      if (mDirSvcProvider &&

          NS_SUCCEEDED(mDirSvcProvider->GetFile(aProperty, _persistent,

                                                _result))) {

        return NS_OK;

      }

      // Otherwise, the test harness provides some directories automatically.

      if (0 == strcmp(aProperty, NS_APP_USER_PROFILE_50_DIR) ||

          0 == strcmp(aProperty, NS_APP_USER_PROFILE_LOCAL_50_DIR) ||

          0 == strcmp(aProperty, NS_APP_PROFILE_LOCAL_DIR_STARTUP)) {

        nsCOMPtr<nsIFile> profD = GetProfileDirectory();

        NS_ENSURE_TRUE(profD, NS_ERROR_FAILURE);

        nsCOMPtr<nsIFile> clone;

        nsresult rv = profD->Clone(getter_AddRefs(clone));

        NS_ENSURE_SUCCESS(rv, rv);

        *_persistent = true;

        clone.forget(_result);

        return NS_OK;

      } else if (0 == strcmp(aProperty, NS_GRE_DIR)) {

        nsCOMPtr<nsIFile> greD = GetGREDirectory();

        NS_ENSURE_TRUE(greD, NS_ERROR_FAILURE);

        *_persistent = true;

        greD.forget(_result);

        return NS_OK;

      } else if (0 == strcmp(aProperty, NS_GRE_BIN_DIR)) {

        nsCOMPtr<nsIFile> greBinD = GetGREBinDirectory();

        NS_ENSURE_TRUE(greBinD, NS_ERROR_FAILURE);

        *_persistent = true;

        greBinD.forget(_result);

        return NS_OK;

      }

      return NS_ERROR_FAILURE;

    }

    ////////////////////////////////////////////////////////////////////////////

    //// nsIDirectoryServiceProvider2

    NS_IMETHODIMP GetFiles(const char *aProperty, nsISimpleEnumerator **_enum) override

    {

      // If we were supplied a directory service provider, ask it first.

      nsCOMPtr<nsIDirectoryServiceProvider2> provider =

        do_QueryInterface(mDirSvcProvider);

      if (provider && NS_SUCCEEDED(provider->GetFiles(aProperty, _enum))) {

        return NS_OK;

      }

     return NS_ERROR_FAILURE;

   }

  private:

    const char* mTestName;

    nsIServiceManager* mServMgr;

    nsCOMPtr<nsIDirectoryServiceProvider> mDirSvcProvider;

    nsCOMPtr<nsIFile> mProfD;

    nsCOMPtr<nsIFile> mGRED;

    nsCOMPtr<nsIFile> mGREBinD;

};

NS_IMPL_QUERY_INTERFACE(

  ScopedXPCOM,

  nsIDirectoryServiceProvider,

  nsIDirectoryServiceProvider2

)

NS_IMETHODIMP_(MozExternalRefCountType)

ScopedXPCOM::AddRef()

{

  return 2;

}

NS_IMETHODIMP_(MozExternalRefCountType)

ScopedXPCOM::Release()

{

  return 1;

}

} // namespace

#endif  // FuzzerTestHarness_h__