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axmol/cocos/base/CCUserDefault.cpp

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/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
Copyright (c) 2017-2020 c4games.com.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#if defined(_WIN32)
#include <io.h>
#include <direct.h>
#else
#include <unistd.h>
#include <errno.h>
#endif
#include <fcntl.h>
#include <sys/stat.h>
#include "openssl/aes.h"
#include "openssl/modes.h"
#include "base/CCUserDefault.h"
#include "platform/CCCommon.h"
#include "platform/CCFileUtils.h"
#include "pugixml/pugixml_imp.hpp"
#include "base/base64.h"
#include "base/ccUtils.h"
#include "yasio/ibstream.hpp"
#include "yasio/obstream.hpp"
#include "yasio/detail/sz.hpp"
#if defined(_WIN32)
#define O_READ_FLAGS O_BINARY | O_RDONLY, S_IREAD
#define O_WRITE_FLAGS O_CREAT | O_RDWR | O_BINARY, S_IWRITE | S_IREAD
#define O_APPEND_FLAGS O_APPEND | O_CREAT | O_RDWR | O_BINARY, S_IWRITE | S_IREAD
#define posix_open ::_open
#define posix_close ::_close
#define posix_lseek ::_lseek
#define posix_read ::_read
#define posix_write ::_write
#define posix_fd2fh(fd) reinterpret_cast<HANDLE>(_get_osfhandle(fd))
#define posix_fsetsize(fd, size) ::_chsize(fd, size)
#else
#define O_READ_FLAGS O_RDONLY, S_IRUSR
#define O_WRITE_FLAGS O_CREAT | O_RDWR, S_IRWXU
#define O_APPEND_FLAGS O_APPEND | O_CREAT | O_RDWR, S_IRWXU
#define posix_open ::open
#define posix_close ::close
#define posix_lseek ::lseek
#define posix_read ::read
#define posix_write ::write
#define posix_fd2fh(fd) (fd)
#define posix_fsetsize(fd, size) ::ftruncate(fd, size), ::lseek(fd, 0, SEEK_SET)
#endif
#define USER_DEFAULT_PLAIN_MODE 0
#if !USER_DEFAULT_PLAIN_MODE
#define USER_DEFAULT_FILENAME "UserDefault.bin"
#else
#define USER_DEFAULT_FILENAME "UserDefault.xml"
#endif
typedef int32_t udflen_t;
NS_CC_BEGIN
/**
* implements of UserDefault
*/
UserDefault* UserDefault::_userDefault = nullptr;
bool UserDefault::_encryptEnabled = false;
std::string UserDefault::_key;
std::string UserDefault::_iv;
static void ud_setkey(std::string& lhs, const cxx17::string_view& rhs) {
static const size_t keyLen = 16;
if (!rhs.empty()) {
lhs.assign(rhs.data(), std::min(rhs.length(), keyLen));
if (lhs.size() < keyLen)
lhs.insert(lhs.end(), keyLen - lhs.size(), '\0'); // fill 0, if key insufficient
}
else
lhs.assign(keyLen, '\0');
}
static void ud_write_v_s(yasio::obstream& obs, const cxx17::string_view value)
{
size_t valpos = obs.length();
obs.write_v(value);
if(!value.empty())
UserDefault::encrypt(obs.wptr(valpos + sizeof(int32_t)), obs.length() - valpos - sizeof(int32_t), AES_ENCRYPT);
}
void UserDefault::setEncryptEnabled(bool enabled, const cxx17::string_view& key, const cxx17::string_view& iv)
{
_encryptEnabled = enabled;
if (_encryptEnabled) {
ud_setkey(_key, key);
ud_setkey(_iv, iv);
}
}
void UserDefault::encrypt(std::string& inout, int enc)
{
if (!inout.empty())
encrypt(&inout.front(), inout.size(), enc);
}
void UserDefault::encrypt(char* inout, size_t size, int enc)
{
if (size > 0) {
AES_KEY aeskey;
AES_set_encrypt_key((const unsigned char*)_key.c_str(), 128, &aeskey);
unsigned char iv[16] = { 0 };
memcpy(iv, _iv.c_str(), std::min(sizeof(iv), _iv.size()));
int ignored_num = 0;
AES_cfb128_encrypt((unsigned char*)inout, (unsigned char*)inout, size, &aeskey, iv, &ignored_num, enc);
}
}
UserDefault::~UserDefault()
{
closeFileMapping();
}
UserDefault::UserDefault()
{
}
void UserDefault::closeFileMapping()
{
_rwmmap.reset();
if (_fd != -1) {
posix_close(_fd);
_fd = -1;
}
}
bool UserDefault::getBoolForKey(const char* pKey)
{
return getBoolForKey(pKey, false);
}
bool UserDefault::getBoolForKey(const char* pKey, bool defaultValue)
{
auto it = this->_values.find(pKey);
if (it != this->_values.end())
return it->second == "1";
return defaultValue;
}
int UserDefault::getIntegerForKey(const char* pKey)
{
return getIntegerForKey(pKey, 0);
}
int UserDefault::getIntegerForKey(const char* pKey, int defaultValue)
{
auto it = this->_values.find(pKey);
if (it != this->_values.end())
return atoi(it->second.c_str());
return defaultValue;
}
float UserDefault::getFloatForKey(const char* pKey)
{
return getFloatForKey(pKey, 0.0f);
}
float UserDefault::getFloatForKey(const char* pKey, float defaultValue)
{
float ret = (float)getDoubleForKey(pKey, (double)defaultValue);
return ret;
}
double UserDefault::getDoubleForKey(const char* pKey)
{
return getDoubleForKey(pKey, 0.0);
}
double UserDefault::getDoubleForKey(const char* pKey, double defaultValue)
{
auto it = this->_values.find(pKey);
if (it != this->_values.end())
return utils::atof(it->second.c_str());
return defaultValue;
}
std::string UserDefault::getStringForKey(const char* pKey)
{
return getStringForKey(pKey, "");
}
std::string UserDefault::getStringForKey(const char* pKey, const std::string & defaultValue)
{
auto it = this->_values.find(pKey);
if (it != this->_values.end())
return it->second;
return defaultValue;
}
void UserDefault::setBoolForKey(const char* pKey, bool value)
{
// save bool value as string
setStringForKey(pKey, value ? "true" : "false");
}
void UserDefault::setIntegerForKey(const char* pKey, int value)
{
// check key
if (! pKey)
{
return;
}
// format the value
char tmp[50];
memset(tmp, 0, 50);
sprintf(tmp, "%d", value);
setStringForKey(pKey, tmp);
}
void UserDefault::setFloatForKey(const char* pKey, float value)
{
setDoubleForKey(pKey, value);
}
void UserDefault::setDoubleForKey(const char* pKey, double value)
{
// check key
if (! pKey)
{
return;
}
// format the value
char tmp[50];
memset(tmp, 0, 50);
sprintf(tmp, "%f", value);
setStringForKey(pKey, tmp);
}
void UserDefault::setStringForKey(const char* pKey, const std::string & value)
{
// ignore empty key
if (! pKey || !*pKey)
{
return;
}
setValueForKey(pKey, value);
#if !USER_DEFAULT_PLAIN_MODE
if (_rwmmap) {
yasio::obstream obs;
if (_encryptEnabled)
{
ud_write_v_s(obs, pKey);
ud_write_v_s(obs, value);
}
else {
obs.write_v(pKey);
obs.write_v(value);
}
if ((_realSize + obs.length() + sizeof(udflen_t)) < _curMapSize)
{
// increase entities count
auto count = yasio::endian::ntohv(*(udflen_t*)_rwmmap->data());
*(udflen_t*)_rwmmap->data() = yasio::endian::htonv(count + 1);
// append entity
::memcpy(_rwmmap->data() + sizeof(udflen_t) + _realSize, obs.data(), obs.length());
_realSize += obs.length();
}
else {
flush();
}
}
#else
flush();
#endif
}
void UserDefault::setValueForKey(const std::string& key, const std::string& value)
{
auto it = _values.find(key);
if (it != _values.end())
it->second = value;
else
_values.emplace(key, value);
}
UserDefault* UserDefault::getInstance()
{
if (!_userDefault)
{
_userDefault = new (std::nothrow) UserDefault();
_userDefault->init();
}
return _userDefault;
}
void UserDefault::destroyInstance()
{
CC_SAFE_DELETE(_userDefault);
}
void UserDefault::setDelegate(UserDefault *delegate)
{
if (_userDefault)
delete _userDefault;
_userDefault = delegate;
}
void UserDefault::init()
{
if (! _initialized)
{
_filePath = FileUtils::getInstance()->getWritablePath() + USER_DEFAULT_FILENAME;
#if !USER_DEFAULT_PLAIN_MODE
// construct file mapping
_fd = posix_open(_filePath.c_str(), O_WRITE_FLAGS);
if (_fd == -1) {
log("[Warnning] UserDefault::init open storage file '%s' failed!", _filePath.c_str());
return;
}
int filesize = posix_lseek(_fd, 0, SEEK_END);
posix_lseek(_fd, 0, SEEK_SET);
if (filesize < _curMapSize) { // construct a empty file mapping
posix_fsetsize(_fd, _curMapSize);
_rwmmap = std::make_shared<mio::mmap_sink>(posix_fd2fh(_fd), 0, _curMapSize);
}
else { /// load to memory _values
_rwmmap = std::make_shared<mio::mmap_sink>(posix_fd2fh(_fd), 0, mio::map_entire_file);
if (_rwmmap->is_mapped()) { // no error
yasio::ibstream_view ibs(_rwmmap->data(), _rwmmap->length());
if (ibs.length() > 0) {
// read count of keyvals.
int count = ibs.read_i<int>();
for (auto i = 0; i < count; ++i) {
std::string key(ibs.read_v());
std::string value(ibs.read_v());
if (_encryptEnabled)
{
UserDefault::encrypt(key, AES_DECRYPT);
UserDefault::encrypt(value, AES_DECRYPT);
}
setValueForKey(key, value);
}
_realSize = ibs.seek(0, SEEK_CUR) - sizeof(udflen_t);
}
}
else {
closeFileMapping();
::remove(_filePath.c_str());
log("[Warnning] UserDefault::init map file '%s' failed, we can't save data persisit this time, next time we will retry!", _filePath.c_str());
}
}
#else
pugi::xml_document doc;
pugi::xml_parse_result ret = doc.load_file(_filePath.c_str());
if (ret) {
for (auto& elem : doc.document_element())
setValueForKey(elem.name(), elem.text().as_string());
}
else {
log("UserDefault::init load xml file: %s failed, %s", _filePath.c_str(), ret.description());
}
#endif
_initialized = true;
}
}
void UserDefault::flush()
{
#if !USER_DEFAULT_PLAIN_MODE
if (_rwmmap) {
yasio::obstream obs;
obs.write_i<int>(static_cast<int>(this->_values.size()));
for (auto& item : this->_values) {
if (_encryptEnabled)
{
ud_write_v_s(obs, item.first);
ud_write_v_s(obs, item.second);
}
else {
obs.write_v(item.first);
obs.write_v(item.second);
}
}
std::error_code error;
if (obs.length() > _curMapSize) {
_rwmmap->unmap();
_curMapSize <<= 1; // X2
posix_fsetsize(_fd, _curMapSize);
_rwmmap->map(posix_fd2fh(_fd), 0, _curMapSize, error);
}
if (!error && _rwmmap->is_mapped())
{ // mapping status is good
::memcpy(_rwmmap->data(), obs.data(), obs.length());
_realSize = obs.length() - sizeof(udflen_t);
}
else {
// close file mapping and do a simple workaround fix to don't do persist later at this time
closeFileMapping();
::remove(_filePath.c_str());
}
}
#else
pugi::xml_document doc;
doc.load_string(R"(<?xml version="1.0" ?>
<r />)");
auto r = doc.document_element();
for(auto& kv : _values)
r.append_child(kv.first.c_str())
.append_child(pugi::xml_node_type::node_pcdata)
.set_value(kv.second.c_str());
doc.save_file(_filePath.c_str(), " ");
#endif
}
void UserDefault::deleteValueForKey(const char* key)
{
if(this->_values.erase(key) > 0)
flush();
}
NS_CC_END
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