Add a regenerate button to regenerate the password in Windows.

rlz/win/lib/registry_util.cc

-// Copyright (c) 2012 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.
-//
-// A helper library to keep track of a user's key by SID.
-// Used by RLZ libary. Also to be used by SearchWithGoogle library.
-
-#include "rlz/win/lib/registry_util.h"
-
-#include "base/process_util.h"
-#include "base/utf_string_conversions.h"
-#include "base/win/registry.h"
-#include "base/win/windows_version.h"
-#include "rlz/lib/assert.h"
-#include "rlz/win/lib/process_info.h"
-
-namespace rlz_lib {
-
-bool RegKeyReadValue(base::win::RegKey& key, const wchar_t* name,
-                     char* value, size_t* value_size) {
-  value[0] = 0;
-
-  std::wstring value_string;
-  if (key.ReadValue(name, &value_string) != ERROR_SUCCESS) {
-    return false;
-  }
-
-  if (value_string.length() > *value_size) {
-    *value_size = value_string.length();
-    return false;
-  }
-
-  // Note that RLZ string are always ASCII by design.
-  strncpy(value, WideToUTF8(value_string).c_str(), *value_size);
-  value[*value_size - 1] = 0;
-  return true;
-}
-
-bool RegKeyWriteValue(base::win::RegKey& key, const wchar_t* name,
-                      const char* value) {
-  std::wstring value_string(ASCIIToWide(value));
-  return key.WriteValue(name, value_string.c_str()) == ERROR_SUCCESS;
-}
-
-bool HasUserKeyAccess(bool write_access) {
-  // The caller is trying to access HKEY_CURRENT_USER.  Test to see if we can
-  // read from there.  Don't try HKEY_CURRENT_USER because this will cause
-  // problems in the unit tests: if we open HKEY_CURRENT_USER directly here,
-  // the overriding done for unit tests will no longer work.  So we try subkey
-  // "Software" which is known to always exist.
-  base::win::RegKey key;
-  if (key.Open(HKEY_CURRENT_USER, L"Software", KEY_READ) != ERROR_SUCCESS)
-    ASSERT_STRING("Could not open HKEY_CURRENT_USER");
-
-  if (ProcessInfo::IsRunningAsSystem()) {
-    ASSERT_STRING("UserKey::HasAccess: No access as SYSTEM without SID set.");
-    return false;
-  }
-
-  if (write_access) {
-    if (base::win::GetVersion() < base::win::VERSION_VISTA) return true;
-    base::ProcessHandle process_handle = base::GetCurrentProcessHandle();
-    base::IntegrityLevel level = base::INTEGRITY_UNKNOWN;
-
-    if (!base::GetProcessIntegrityLevel(process_handle, &level)) {
-      ASSERT_STRING("UserKey::HasAccess: Cannot determine Integrity Level.");
-      return false;
-    }
-    if (level <= base::LOW_INTEGRITY) {
-      ASSERT_STRING("UserKey::HasAccess: Cannot write from Low Integrity.");
-      return false;
-    }
-  }
-  return true;
-}
-
-}  // namespace rlz_lib