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https://github.com/OpenFusionProject/OpenFusion.git
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Use memcpy() instead of casting to load keys
UBSAN complains about the casting approach because it loads a 64-bit integer from the defaultKeys string which isn't guaranteed to be 64-bit aligned, which is undefined behavior.
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@ -41,7 +41,8 @@ int CNSocketEncryption::xorData(uint8_t* buffer, uint8_t* key, int size) {
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uint64_t CNSocketEncryption::createNewKey(uint64_t uTime, int32_t iv1, int32_t iv2) {
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uint64_t num = (uint64_t)(iv1 + 1);
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uint64_t num2 = (uint64_t)(iv2 + 1);
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uint64_t dEKey = (uint64_t)(*(uint64_t*)&defaultKey[0]);
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uint64_t dEKey;
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memcpy(&dEKey, defaultKey, sizeof(dEKey));
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return dEKey * (uTime * num * num2);
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}
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@ -65,7 +66,7 @@ CNPacketData::CNPacketData(void *b, uint32_t t, int l, int trnum, void *trs):
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// ========================================================[[ CNSocket ]]========================================================
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CNSocket::CNSocket(SOCKET s, struct sockaddr_in &addr, PacketHandler ph): sock(s), sockaddr(addr), pHandler(ph) {
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EKey = (uint64_t)(*(uint64_t*)&CNSocketEncryption::defaultKey[0]);
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memcpy(&EKey, CNSocketEncryption::defaultKey, sizeof(EKey));
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}
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bool CNSocket::sendData(uint8_t* data, int size) {
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@ -209,9 +209,12 @@ void CNLoginServer::login(CNSocket* sock, CNPacketData* data) {
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// send the resp in with original key
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sock->sendPacket(resp, P_LS2CL_REP_LOGIN_SUCC);
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uint64_t defaultKey;
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memcpy(&defaultKey, CNSocketEncryption::defaultKey, sizeof(defaultKey));
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// update keys
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sock->setEKey(CNSocketEncryption::createNewKey(resp.uiSvrTime, resp.iCharCount + 1, resp.iSlotNum + 1));
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sock->setFEKey(CNSocketEncryption::createNewKey((uint64_t)(*(uint64_t*)&CNSocketEncryption::defaultKey[0]), login->iClientVerC, 1));
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sock->setFEKey(CNSocketEncryption::createNewKey(defaultKey, login->iClientVerC, 1));
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DEBUGLOG(
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std::cout << "Login Server: Login success. Welcome " << userLogin << " [" << loginSessions[sock].userID << "]" << std::endl;
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