Add handshake session timeout protection

src/game/desc.cpp

@@ -52,6 +52,7 @@ void DESC::Initialize()
 	m_iHandshakeRetry = 0;
 	m_dwClientTime = 0;
 	m_bHandshaking = false;
+	m_handshake_time = get_dword_time();
 
 	m_lpBufferedOutputBuffer = NULL;
 	m_lpOutputBuffer = NULL;
@@ -715,6 +716,14 @@ bool DESC::IsHandshaking()
 	return m_bHandshaking;
 }
 
+bool DESC::IsExpiredHandshake() const
+{
+	if (m_handshake_time == 0)
+		return false;
+
+	return (m_handshake_time + (5 * 1000)) < get_dword_time();
+}
+
 DWORD DESC::GetClientTime()
 {
 	return m_dwClientTime;

src/game/desc.h

@@ -174,6 +174,10 @@ class DESC
 		bool			isChannelStatusRequested() const { return m_bChannelStatusRequested; }
 		void			SetChannelStatusRequested(bool bChannelStatusRequested) { m_bChannelStatusRequested = bChannelStatusRequested; }
 
+		// Handshake timeout check
+		bool			IsExpiredHandshake() const;
+		void			SetHandshakeTime(uint32_t handshake_time) { m_handshake_time = handshake_time; }
+
 	protected:
 		void			Initialize();
 
@@ -246,6 +250,9 @@ class DESC
 		bool			m_bDestroyed;
 		bool			m_bChannelStatusRequested;
 
+		// Handshake timeout protection
+		uint32_t		m_handshake_time;
+
 #ifdef _IMPROVED_PACKET_ENCRYPTION_
 		Cipher cipher_;
 #else

src/game/desc_manager.cpp

@@ -224,6 +224,18 @@ void DESC_MANAGER::DestroyClosed()
 			DestroyDesc(d, false);
 			m_set_pkDesc.erase(ci);
 		}
+		else if (d->IsPhase(PHASE_HANDSHAKE))
+		{
+			if (d->GetType() == DESC_TYPE_ACCEPTOR)
+			{
+				if (d->IsExpiredHandshake())
+				{
+					sys_log(0, "[%s]: handshake session has expired!", d->GetHostName());
+					DestroyDesc(d, false);
+					m_set_pkDesc.erase(ci);
+				}
+			}
+		}
 	}
 }