blob: 35f8934b04251c2572c572d8204f3b8a140a15fe [file] [log] [blame]
// Copyright 2010-2014, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "win32/base/omaha_util.h"
// Omaha is the code name of Google Update, which is not used in
// OSS version of Mozc.
#if !defined(GOOGLE_JAPANESE_INPUT_BUILD)
#error OmahaUtil must be used with Google Japanese Input, not OSS Mozc
#endif // !GOOGLE_JAPANESE_INPUT_BUILD
#include <windows.h>
#define _ATL_NO_AUTOMATIC_NAMESPACE
#define _WTL_NO_AUTOMATIC_NAMESPACE
#define _ATL_NO_HOSTING
// Workaround against KB813540
#include <atlbase_mozc.h>
#include <string>
#include "base/system_util.h"
namespace mozc {
namespace win32 {
namespace {
using ATL::CRegKey;
const wchar_t kClientStateKey[] = L"Software\\Google\\Update\\ClientState\\"
L"{DDCCD2A9-025E-4142-BCEB-F467B88CF830}";
const wchar_t kChannelKeyName[] = L"ap";
LONG OpenClientStateKey(CRegKey *key, REGSAM base_sam) {
const REGSAM sam_desired = base_sam |
(SystemUtil::IsWindowsX64() ? KEY_WOW64_32KEY : 0);
return key->Create(HKEY_LOCAL_MACHINE, kClientStateKey,
REG_NONE, REG_OPTION_NON_VOLATILE,
sam_desired);
}
} // anonymous namespace
// Writes a REG_SZ channel name into "ap" in Mozc's client state key.
bool OmahaUtil::WriteChannel(const wstring &value) {
CRegKey key;
LONG result = OpenClientStateKey(&key, KEY_READ | KEY_WRITE);
if (ERROR_SUCCESS != result) {
return false;
}
result = key.SetStringValue(kChannelKeyName, value.c_str());
if (ERROR_SUCCESS != result) {
return false;
}
return true;
}
// Reads a REG_SZ channel name from "ap" in Mozc's client state key.
wstring OmahaUtil::ReadChannel() {
CRegKey key;
LONG result = OpenClientStateKey(&key, KEY_READ);
if (ERROR_SUCCESS != result) {
return L"";
}
wchar_t buf[512];
ULONG buf_size = arraysize(buf);
result = key.QueryStringValue(kChannelKeyName, buf, &buf_size);
if (ERROR_SUCCESS != result) {
return L"";
}
return wstring(buf);
}
bool OmahaUtil::ClearOmahaError() {
CRegKey key;
LONG result = OpenClientStateKey(&key, KEY_READ | KEY_WRITE);
if (ERROR_SUCCESS != result) {
return false;
}
result = key.SetDWORDValue(L"InstallerResult", 0);
if (ERROR_SUCCESS != result) {
return false;
}
result = key.SetStringValue(L"InstallerResultUIString", L"");
if (ERROR_SUCCESS != result) {
return false;
}
return true;
}
bool OmahaUtil::WriteOmahaError(const wstring &ui_message,
const wstring &header) {
CRegKey key;
LONG result = OpenClientStateKey(&key, KEY_READ | KEY_WRITE);
if (ERROR_SUCCESS != result) {
return false;
}
result = key.SetDWORDValue(L"InstallerResult", 1);
if (ERROR_SUCCESS != result) {
return false;
}
// Leaves Mozc version in addition to UI message for customer support.
const wstring &message = header.length() > 0 ? header + L"\r\n" + ui_message
: ui_message;
// This message will be displayed by Omaha meta installer in the error
// dialog.
result = key.SetStringValue(L"InstallerResultUIString", message.c_str());
if (ERROR_SUCCESS != result) {
return false;
}
return true;
}
bool OmahaUtil::ClearChannel() {
CRegKey key;
LONG result = OpenClientStateKey(&key, KEY_READ | KEY_WRITE);
if (ERROR_SUCCESS != result) {
// The parent key is already deleted. It's OK.
return true;
}
if (ReadChannel().empty()) {
// The value does not exist. It's OK.
return true;
}
result = key.DeleteValue(kChannelKeyName);
if (ERROR_SUCCESS != result) {
return false;
}
return true;
}
} // namespace win32
} // namespace mozc