[Downloads] Move client guid for AV scanning of downloaded files to chrome/

chrome/browser/media_galleries/fileapi/scanning_file_validator.cc

+// Copyright 2013 The Chromium 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 "chrome/browser/media_galleries/fileapi/scanning_file_validator.h"
+
+#if defined(OS_WIN)
+#include <objbase.h>
+#include <windows.h>
+#endif
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/common/chrome_constants.h"
+#include "content/public/browser/browser_thread.h"
+
+#if defined(OS_WIN)
+#include "base/file_util.h"
+#endif
+
+using content::BrowserThread;
+
+namespace chrome {
+
+namespace {
+
+#if defined(OS_WIN)
+base::PlatformFileError ScanFile(
+    const base::FilePath& dest_platform_path) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
+
+  std::string client_guid(chrome::kApplicationClientIDStringForAVScanning);
+
+  GUID guid = GUID_NULL;
+  HRESULT hr = CLSIDFromString(base::UTF8ToUTF16(client_guid).c_str(), &guid);
+  DCHECK(!FAILED(hr));
+
+  // Execute an AV check of the transferred file. S_OK means
+  // the file was OK. Other results may indicate the file was
+  // deleted. Any other results, including E_FAIL and
+  // INET_E_SECURITY_PROBLEM, are notified as security errors.
+  HRESULT scan_result =
+      base::AVScanFile(dest_platform_path, std::string(), guid);
+  if (scan_result != S_OK)

[vandebo (ex-Chrome), 2013/08/07 17:11:12]

nit: flip the case of this to fail safely in the face of future change.  If
result is ok, return ok, default return fail.

[Greg Billock, 2013/08/07 17:42:56]

Done.

+    return base::PLATFORM_FILE_ERROR_SECURITY;
+
+  return base::PLATFORM_FILE_OK;
+}
+#endif
+
+}  // namespace
+
+ScanningFileValidator::~ScanningFileValidator() {}
+
+void ScanningFileValidator::StartPostWriteValidation(
+    const base::FilePath& dest_platform_path,
+    const ResultCallback& result_callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+#if defined(OS_WIN)
+  BrowserThread::PostTaskAndReplyWithResult(
+      BrowserThread::FILE,
+      FROM_HERE,
+      base::Bind(&ScanFile, dest_platform_path),
+      result_callback);
+#else
+  result_callback.Run(base::PLATFORM_FILE_OK);
+#endif
+}
+
+ScanningFileValidator::ScanningFileValidator() {
+}
+
+}  // namespace chrome