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// Copyright (c) 2010 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/importer/firefox_importer_utils.h"

#include <shlobj.h>

#include "base/file_util.h"
#include "base/registry.h"

// NOTE: Keep these in order since we need test all those paths according
// to priority. For example. One machine has multiple users. One non-admin
// user installs Firefox 2, which causes there is a Firefox2 entry under HKCU.
// One admin user installs Firefox 3, which causes there is a Firefox 3 entry
// under HKLM. So when the non-admin user log in, we should deal with Firefox 2
// related data instead of Firefox 3.
static const HKEY kFireFoxRegistryPaths[] = {

int GetCurrentFirefoxMajorVersionFromRegistry() {
  TCHAR ver_buffer[128];
  DWORD ver_buffer_length = sizeof(ver_buffer);
  int highest_version = 0;
  // When installing Firefox with admin account, the product keys will be
  // written under HKLM\Mozilla. Otherwise it the keys will be written under
  // HKCU\Mozilla.
  for (int i = 0; i < arraysize(kFireFoxRegistryPaths); ++i) {
    RegKey reg_key(kFireFoxRegistryPaths[i],
                   L"Software\\Mozilla\\Mozilla Firefox");

    bool result = reg_key.ReadValue(L"CurrentVersion", ver_buffer,
                                    &ver_buffer_length, NULL);
    if (!result)
    highest_version = std::max(highest_version, _wtoi(ver_buffer));
  return highest_version;

std::wstring GetFirefoxInstallPathFromRegistry() {
  // Detects the path that Firefox is installed in.
  std::wstring registry_path = L"Software\\Mozilla\\Mozilla Firefox";
  TCHAR buffer[MAX_PATH];
  DWORD buffer_length = sizeof(buffer);
  RegKey reg_key(HKEY_LOCAL_MACHINE, registry_path.c_str());
  bool result = reg_key.ReadValue(L"CurrentVersion", buffer,
                                  &buffer_length, NULL);
  if (!result)
    return std::wstring();
  registry_path += L"\\" + std::wstring(buffer) + L"\\Main";
  buffer_length = sizeof(buffer);
  RegKey reg_key_directory = RegKey(HKEY_LOCAL_MACHINE, registry_path.c_str());
  result = reg_key_directory.ReadValue(L"Install Directory", buffer,
                                       &buffer_length, NULL);
  if (!result)
    return std::wstring();
  return buffer;

FilePath GetProfilesINI() {
  FilePath ini_file;
  // The default location of the profile folder containing user data is
  // under the "Application Data" folder in Windows XP.
  wchar_t buffer[MAX_PATH] = {0};
                                SHGFP_TYPE_CURRENT, buffer))) {
    ini_file = FilePath(buffer).Append(L"Mozilla\\Firefox\\profiles.ini");
  if (file_util::PathExists(ini_file))
    return ini_file;

  return FilePath();

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