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/*
* Copyright (C) 2012-2014 Arctium Emulation <http://arctium.org>
* Copyright (C) 2008-2018 TrinityCore <https://www.trinitycore.org/>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "Helper.hpp"
#include "Patterns/Common.hpp"
namespace Connection_Patcher
{
namespace Helper
{
// adapted from http://stackoverflow.com/questions/8593608/how-can-i-copy-a-directory-using-boost-filesystem
void CopyDir(boost::filesystem::path const & source, boost::filesystem::path const & destination)
{
namespace fs = boost::filesystem;
if (!fs::exists(source) || !fs::is_directory(source))
throw std::invalid_argument("Source directory " + source.string() + " does not exist or is not a directory.");
if (fs::exists(destination))
throw std::invalid_argument("Destination directory " + destination.string() + " already exists.");
if (!fs::create_directory(destination))
throw std::runtime_error("Unable to create destination directory" + destination.string());
for (fs::directory_iterator file(source); file != fs::directory_iterator(); ++file)
{
fs::path current(file->path());
if (fs::is_directory(current))
CopyDir(current, destination / current.filename());
else
fs::copy_file(current, destination / current.filename());
}
}
Constants::BinaryTypes GetBinaryType(std::vector<unsigned char> const& data)
{
// Check MS-DOS magic
if (*reinterpret_cast<uint16_t const*>(data.data()) == 0x5A4D)
{
uint32_t const peOffset(*reinterpret_cast<uint32_t const*>(data.data() + 0x3C));
// Check PE magic
if (*reinterpret_cast<uint32_t const*>(data.data() + peOffset) != 0x4550)
throw std::invalid_argument("Not a PE file!");
return Constants::BinaryTypes(*reinterpret_cast<uint16_t const*>(data.data() + peOffset + 4));
}
else
return Constants::BinaryTypes(*reinterpret_cast<uint32_t const*>(data.data()));
}
std::set<size_t> SearchOffset(std::vector<unsigned char> const& binary, std::vector<unsigned char> const& pattern)
{
std::set<size_t> offsets;
for (size_t i = 0; (i + pattern.size()) < binary.size(); i++)
{
size_t matches = 0;
for (size_t j = 0; j < pattern.size(); j++)
{
if (binary[i + j] != pattern[j])
break;
matches++;
}
if (matches == pattern.size())
{
offsets.insert(i);
i += matches;
}
}
return offsets.empty() ? throw std::runtime_error("unable to find pattern") : offsets;
}
uint32_t GetBuildNumber(std::vector<unsigned char> const& binary)
{
std::set<size_t> offsets = SearchOffset(binary, Patterns::Common::BinaryVersion());
if (!offsets.empty())
{
size_t const verOffset = (*offsets.begin());
std::string ver(&binary[verOffset + 16], &binary[verOffset + 21]);
return std::stoi(ver);
}
return 0;
}
}
}
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