최종완료보고 버전

2026-05-20 03:08:08 +09:00
commit 10d255ed51
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+#ifndef TELNET_HANDLER__H_
+#define TELNET_HANDLER__H_
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+class HTelnetHandler : public HProtocolHandler
+{
+public:
+	enum eCommand
+	{
+		SE		= 240,	// End of subnegotiation parameters.
+		NOP		= 241,	// No operation Data mark. Indicates the position of a Synch event within the data stream.
+		DM		= 242,	// This should always be accompanied by a TCP urgent notification.
+		BRK		= 243,	// Break. Indicates that the "break" or "attention" key was hit.
+		IP		= 244,	// Suspend, interrupt or abort the process to which the NVT is connected.
+		AO		= 245,	// Abort output. Allows the current process to run to completion but donot send its output to the user.
+		AYT		= 246,	// Are you there. Send back to the NVT some visible evidence that the AYT was received.
+		EC		= 247,	// Erase character. The receiver should delete the last preceding undeleted character from the data stream.
+		EL		= 248,	// Erase line. Delete characters from the data stream back to but not including the previous CRLF.
+		GA		= 249,	// Go ahead. Used, under certain circumstances, to tell the other end that it can transmit.
+		SB		= 250,	// Subnegotiation of the indicated option follows.
+		WILL	= 251,	// Indicates the desire to begin performing, or confirmation that you are now performing, the indicated option.
+		WONT	= 252,	// Indicates the refusal to perform, or continue performing, the indicated option. 
+		DO		= 253,	// Indicates the request that the other party perform, or confirmation that you are expecting the other party to perform, the indicated option.    
+		DONT	= 254,	// Indicates the demand that the other party stop performing, or confirmation that you are no longer expecting the other party to perform, the indicated option.
+		IAC		= 255	// Interpret as command.
+	};
+	
+	enum EOption
+	{
+		ECHO		= 1,	// echo (RFC 857)
+		SGAHEAD		= 3,	// suppress go ahead (RFC 858)
+		STATUS		= 5,	// status (RFC 859)
+		TMARK		= 6,	// timing mark (RFC 860)
+		TTYPE		= 24,	// terminal type (RFC 1091)
+		WSIZE		= 31,	// window size (RFC 1073)
+		TSPEED		= 32,	// terminal speed (RFC 1079)
+		RFCONTROL	= 33,	// remote flow control (RFC 1372)
+		LMODE		= 34,	// linemode (RFC 1184)
+		EVARIABLES	= 36,	// environment variables (RFC 1408)
+	};
+	
+	enum
+	{
+		MAX_COMMAND_BUFFER_SIZE = 4096
+	};
+
+	HTelnetHandler();
+	~HTelnetHandler();
+
+protected:
+	void OnReceivedStatusFromTransport(int nStatus);
+	int OnReceivedFromTransport(const char * pData, int nSize);
+
+	virtual void OnEstablished() {}
+	virtual bool OnInitialReceive(const char * pData, unsigned nSize) { return true; }
+	virtual int OnReceivedCommand(const char * pszCommand) = 0;
+
+protected:
+	char m_pCommandBuffer[MAX_COMMAND_BUFFER_SIZE + 1];
+	unsigned int m_nCommandBufferedLength;
+
+	int m_bInitialStep;
+};
+
+
+#endif	// PROTOCOL_HANDLER__H_