wxMASSManager/Mass/Mass.cpp

187 lines
5.4 KiB
C++

// wxMASSManager
// Copyright (C) 2020 Guillaume Jacquemin
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <Corrade/version.h>
#if !(CORRADE_VERSION_YEAR * 100 + CORRADE_VERSION_MONTH >= 202006)
#error This application requires Corrade 2020.06 or later to build.
#endif
#include <cstring>
#include <algorithm>
#include <Corrade/Containers/Array.h>
#include <Corrade/Utility/Directory.h>
#include "Mass.h"
using namespace Corrade;
constexpr char mass_name_locator[] = "Name_45_A037C5D54E53456407BDF091344529BB\0\x0c\0\0\0StrProperty";
constexpr char steamid_locator[] = "Account\0\x0c\0\0\0StrProperty";
std::string Mass::_lastError = "";
Mass::Mass(const std::string& filename) {
_filename = filename;
if(!Utility::Directory::exists(_filename)) {
_lastError = "The file " + _filename + " couldn't be found.";
return;
}
auto mmap = Utility::Directory::mapRead(_filename);
auto iter = std::search(mmap.begin(), mmap.end(), &mass_name_locator[0], &mass_name_locator[56]);
if(iter != mmap.end()) {
_name = std::string{iter + 70};
_state = MassState::Valid;
}
else {
_lastError = "The name couldn't be found in " + filename;
_state = MassState::Invalid;
}
}
auto Mass::lastError() -> std::string const& {
return _lastError;
}
auto Mass::getNameFromFile(const std::string& filename) -> std::string {
if(!Utility::Directory::exists(filename)) {
_lastError = "The file " + filename + " couldn't be found.";
return "";
}
std::string name = "";
auto mmap = Utility::Directory::mapRead(filename);
auto iter = std::search(mmap.begin(), mmap.end(), &mass_name_locator[0], &mass_name_locator[56]);
if(iter != mmap.end()) {
name = std::string{iter + 70};
}
else {
_lastError = "The name couldn't be found in " + filename;
}
return name;
}
auto Mass::filename() -> std::string const&{
return _filename;
}
auto Mass::name() -> std::string const&{
return _name;
}
auto Mass::getName() -> std::string const& {
if(!Utility::Directory::exists(_filename)) {
_lastError = "The file " + _filename + " couldn't be found.";
_state = MassState::Empty;
return _name = "";
}
auto mmap = Utility::Directory::mapRead(_filename);
auto iter = std::search(mmap.begin(), mmap.end(), &mass_name_locator[0], &mass_name_locator[56]);
if(iter != mmap.end()) {
_state = MassState::Valid;
return _name = std::string{iter + 70};
}
else {
_lastError = "The name couldn't be found in " + _filename;
_state = MassState::Invalid;
return _name = "";
}
}
auto Mass::state() -> MassState {
return _state;
}
auto Mass::updateSteamId(const std::string& steam_id) -> bool {
if(!Utility::Directory::exists(_filename)) {
_lastError = "The file " + _filename + " couldn't be found.";
_state = MassState::Empty;
return false;
}
Utility::Directory::copy(_filename, _filename + ".tmp");
{
auto mmap = Utility::Directory::map(_filename + ".tmp");
auto iter = std::search(mmap.begin(), mmap.end(), &steamid_locator[0], &steamid_locator[23]);
if(iter == mmap.end()) {
_lastError = "The M.A.S.S. file at " + _filename + " seems to be corrupt.";
Utility::Directory::rm(_filename + ".tmp");
return false;
}
iter += 37;
if(std::strncmp(iter, steam_id.c_str(), steam_id.length()) != 0) {
for(int i = 0; i < 17; ++i) {
*(iter + i) = steam_id[i];
}
}
}
if(Utility::Directory::exists(_filename)) {
Utility::Directory::rm(_filename);
}
Utility::Directory::move(_filename + ".tmp", _filename);
return true;
}
auto Mass::rename(const std::string& new_name) -> bool {
char length_difference = static_cast<char>(_name.length() - new_name.length());
std::string mass_data = Utility::Directory::readString(_filename);
auto iter = std::search(mass_data.begin(), mass_data.end(), &mass_name_locator[0], &mass_name_locator[56]);
if(iter != mass_data.end()) {
*(iter - 45) = *(iter - 45) - length_difference;
*(iter + 57) = *(iter + 57) - length_difference;
*(iter + 66) = *(iter + 66) - length_difference;
while(*(iter + 70) != '\0') {
mass_data.erase(iter + 70);
}
mass_data.insert(iter + 70, new_name.cbegin(), new_name.cend());
if(!Utility::Directory::writeString(_filename, mass_data)) {
_lastError = "The file" + _filename + " couldn't be written to.";
return false;
}
return true;
}
else {
_lastError = "Couldn't find the M.A.S.S. name in " + _filename;
return false;
}
}