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https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2024-11-09 01:38:20 +00:00
Implement FDB Checksum
- Added config option `check_fdb` - Added check in WorldServer.cpp - Added raw MD5 function in MD5.cpp and MD5.h
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@ -115,6 +115,14 @@ MD5::MD5(const std::string &text)
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finalize();
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}
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// raw md5 construstor
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MD5::MD5(const char * input, size_type length)
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{
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init();
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update(input, length);
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finalize();
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}
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//////////////////////////////
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void MD5::init()
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@ -54,6 +54,7 @@ public:
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MD5();
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MD5(const std::string& text);
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MD5(const char * input, size_type length);
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void update(const unsigned char *buf, size_type length);
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void update(const char *buf, size_type length);
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MD5& finalize();
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@ -838,7 +838,31 @@ void HandlePacket(Packet* packet) {
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case MSG_WORLD_CLIENT_VALIDATION: {
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std::string username = PacketUtils::ReadString(0x08, packet, true);
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std::string sessionKey = PacketUtils::ReadString(74, packet, true);
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std::string fdbChecksum = PacketUtils::ReadString(packet->length - 33, packet, false);
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if (bool(std::stoi(Game::config->GetValue("check_fdb")))) {
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std::ifstream fileStream;
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fileStream.open ("res/CDServer.fdb", std::ios::binary | std::ios::in);
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fileStream.seekg (0, std::ios::end);
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uint64_t fileStreamLength = fileStream.tellg();
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fileStream.seekg (0, std::ios::beg);
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char * fileStreamData = new char[fileStreamLength + 1];
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fileStream.read(fileStreamData, fileStreamLength);
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*(fileStreamData + (fileStreamLength + 1)) = 0x00; // null terminate the string
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MD5 md5 = MD5(fileStreamData, fileStreamLength + 1);
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std::string ourFdbChecksum = md5.hexdigest();
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Game::logger->Log("WorldServer", "Got client checksum %s and we have server checksum %s. \n", fdbChecksum.c_str(), ourFdbChecksum.c_str());
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if (fdbChecksum != ourFdbChecksum) {
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Game::logger->Log("WorldServer", "Client checksum does not match server checksum.\n");
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Game::server->Disconnect(packet->systemAddress, SERVER_DISCON_KICK);
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return;
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}
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}
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//Request the session info from Master:
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CBITSTREAM;
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PacketUtils::WriteHeader(bitStream, MASTER, MSG_MASTER_REQUEST_SESSION_KEY);
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@ -47,3 +47,6 @@ solo_racing=0
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# Disables the anti-speedhack system. If you get kicked randomly you might want to disable this, as it might just be lag
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disable_anti_speedhack=0
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# 0 or 1, check server fdb (res/CDServer.fdb) against clients
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check_fdb=0
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