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bin/gems/eventmachine-1.2.7/ext/ed.h

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+/*****************************************************************************
+
+$Id$
+
+File:     ed.h
+Date:     06Apr06
+
+Copyright (C) 2006-07 by Francis Cianfrocca. All Rights Reserved.
+Gmail: blackhedd
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of either: 1) the GNU General Public License
+as published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version; or 2) Ruby's License.
+
+See the file COPYING for complete licensing information.
+
+*****************************************************************************/
+
+#ifndef __EventableDescriptor__H_
+#define __EventableDescriptor__H_
+
+
+class EventMachine_t; // forward reference
+#ifdef WITH_SSL
+class SslBox_t; // forward reference
+#endif
+
+bool SetSocketNonblocking (SOCKET);
+bool SetFdCloexec (int);
+
+/*************************
+class EventableDescriptor
+*************************/
+
+class EventableDescriptor: public Bindable_t
+{
+	public:
+		EventableDescriptor (SOCKET, EventMachine_t*);
+		virtual ~EventableDescriptor() NO_EXCEPT_FALSE;
+
+		SOCKET GetSocket() {return MySocket;}
+		void SetSocketInvalid() { MySocket = INVALID_SOCKET; }
+		void Close();
+
+		virtual void Read() = 0;
+		virtual void Write() = 0;
+		virtual void Heartbeat() = 0;
+
+		// These methods tell us whether the descriptor
+		// should be selected or polled for read/write.
+		virtual bool SelectForRead() = 0;
+		virtual bool SelectForWrite() = 0;
+
+		// are we scheduled for a close, or in an error state, or already closed?
+		bool ShouldDelete();
+		// Do we have any data to write? This is used by ShouldDelete.
+		virtual int GetOutboundDataSize() {return 0;}
+		virtual bool IsWatchOnly(){ return bWatchOnly; }
+
+		virtual void ScheduleClose (bool after_writing);
+		bool IsCloseScheduled();
+		virtual void HandleError(){ ScheduleClose (false); }
+
+		void SetEventCallback (EMCallback);
+
+		virtual bool GetPeername (struct sockaddr*, socklen_t*) = 0;
+		virtual bool GetSockname (struct sockaddr*, socklen_t*) = 0;
+		virtual bool GetSubprocessPid (pid_t*) {return false;}
+
+		virtual void StartTls() {}
+		virtual void SetTlsParms (const char *, const char *, bool, bool, const char *, const char *, const char *, const char *, int) {}
+
+		#ifdef WITH_SSL
+		virtual X509 *GetPeerCert() {return NULL;}
+		virtual int GetCipherBits() {return -1;}
+		virtual const char *GetCipherName() {return NULL;}
+		virtual const char *GetCipherProtocol() {return NULL;}
+		virtual const char *GetSNIHostname() {return NULL;}
+		#endif
+
+		virtual uint64_t GetCommInactivityTimeout() {return 0;}
+		virtual int SetCommInactivityTimeout (uint64_t) {return 0;}
+		uint64_t GetPendingConnectTimeout();
+		int SetPendingConnectTimeout (uint64_t value);
+		uint64_t GetLastActivity() { return LastActivity; }
+
+		#ifdef HAVE_EPOLL
+		struct epoll_event *GetEpollEvent() { return &EpollEvent; }
+		#endif
+
+		#ifdef HAVE_KQUEUE
+		bool GetKqueueArmWrite() { return bKqueueArmWrite; }
+		#endif
+
+		virtual void StartProxy(const uintptr_t, const unsigned long, const unsigned long);
+		virtual void StopProxy();
+		virtual unsigned long GetProxiedBytes(){ return ProxiedBytes; };
+		virtual void SetProxiedFrom(EventableDescriptor*, const unsigned long);
+		virtual int SendOutboundData(const char*,unsigned long){ return -1; }
+		virtual bool IsPaused(){ return bPaused; }
+		virtual bool Pause(){ bPaused = true; return bPaused; }
+		virtual bool Resume(){ bPaused = false; return bPaused; }
+
+		void SetUnbindReasonCode(int code){ UnbindReasonCode = code; }
+		virtual int ReportErrorStatus(){ return 0; }
+		virtual bool IsConnectPending(){ return false; }
+		virtual uint64_t GetNextHeartbeat();
+
+	private:
+		bool bCloseNow;
+		bool bCloseAfterWriting;
+
+	protected:
+		SOCKET MySocket;
+		bool bAttached;
+		bool bWatchOnly;
+
+		EMCallback EventCallback;
+		void _GenericInboundDispatch (const char *buffer, unsigned long size);
+		bool _GenericGetPeername (struct sockaddr*, socklen_t*);
+		bool _GenericGetSockname (struct sockaddr*, socklen_t*);
+
+		uint64_t CreatedAt;
+		bool bCallbackUnbind;
+		int UnbindReasonCode;
+
+		unsigned long BytesToProxy;
+		EventableDescriptor *ProxyTarget;
+		EventableDescriptor *ProxiedFrom;
+		unsigned long ProxiedBytes;
+
+		unsigned long MaxOutboundBufSize;
+
+		#ifdef HAVE_EPOLL
+		struct epoll_event EpollEvent;
+		#endif
+
+		#ifdef HAVE_KQUEUE
+		bool bKqueueArmWrite;
+		#endif
+
+		EventMachine_t *MyEventMachine;
+		uint64_t PendingConnectTimeout;
+		uint64_t InactivityTimeout;
+		uint64_t LastActivity;
+		uint64_t NextHeartbeat;
+		bool bPaused;
+};
+
+
+
+/*************************
+class LoopbreakDescriptor
+*************************/
+
+class LoopbreakDescriptor: public EventableDescriptor
+{
+	public:
+		LoopbreakDescriptor (SOCKET, EventMachine_t*);
+		virtual ~LoopbreakDescriptor() {}
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat() {}
+
+		virtual bool SelectForRead() {return true;}
+		virtual bool SelectForWrite() {return false;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return _GenericGetPeername (s, len); }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); }
+};
+
+
+/**************************
+class ConnectionDescriptor
+**************************/
+
+class ConnectionDescriptor: public EventableDescriptor
+{
+	public:
+		ConnectionDescriptor (SOCKET, EventMachine_t*);
+		virtual ~ConnectionDescriptor();
+
+		int SendOutboundData (const char*, unsigned long);
+
+		void SetConnectPending (bool f);
+		virtual void ScheduleClose (bool after_writing);
+		virtual void HandleError();
+
+		void SetNotifyReadable (bool);
+		void SetNotifyWritable (bool);
+		void SetAttached (bool);
+		void SetWatchOnly (bool);
+
+		bool Pause();
+		bool Resume();
+
+		bool IsNotifyReadable(){ return bNotifyReadable; }
+		bool IsNotifyWritable(){ return bNotifyWritable; }
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat();
+
+		virtual bool SelectForRead();
+		virtual bool SelectForWrite();
+
+		// Do we have any data to write? This is used by ShouldDelete.
+		virtual int GetOutboundDataSize() {return OutboundDataSize;}
+
+		virtual void StartTls();
+		virtual void SetTlsParms (const char *, const char *, bool, bool, const char *, const char *, const char *, const char *, int);
+
+		#ifdef WITH_SSL
+		virtual X509 *GetPeerCert();
+		virtual int GetCipherBits();
+		virtual const char *GetCipherName();
+		virtual const char *GetCipherProtocol();
+		virtual const char *GetSNIHostname();
+		virtual bool VerifySslPeer(const char*);
+		virtual void AcceptSslPeer();
+		#endif
+
+		void SetServerMode() {bIsServer = true;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return _GenericGetPeername (s, len); }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); }
+
+		virtual uint64_t GetCommInactivityTimeout();
+		virtual int SetCommInactivityTimeout (uint64_t value);
+
+		virtual int ReportErrorStatus();
+		virtual bool IsConnectPending(){ return bConnectPending; }
+
+	protected:
+		struct OutboundPage {
+			OutboundPage (const char *b, int l, int o=0): Buffer(b), Length(l), Offset(o) {}
+			void Free() {if (Buffer) free (const_cast<char*>(Buffer)); }
+			const char *Buffer;
+			int Length;
+			int Offset;
+		};
+
+	protected:
+		bool bConnectPending;
+
+		bool bNotifyReadable;
+		bool bNotifyWritable;
+
+		bool bReadAttemptedAfterClose;
+		bool bWriteAttemptedAfterClose;
+
+		std::deque<OutboundPage> OutboundPages;
+		int OutboundDataSize;
+
+		#ifdef WITH_SSL
+		SslBox_t *SslBox;
+		std::string CertChainFilename;
+		std::string PrivateKeyFilename;
+		std::string CipherList;
+		std::string EcdhCurve;
+		std::string DhParam;
+		int Protocols;
+		bool bHandshakeSignaled;
+		bool bSslVerifyPeer;
+		bool bSslFailIfNoPeerCert;
+		std::string SniHostName;
+		bool bSslPeerAccepted;
+		#endif
+
+		#ifdef HAVE_KQUEUE
+		bool bGotExtraKqueueEvent;
+		#endif
+
+		bool bIsServer;
+
+	private:
+		void _UpdateEvents();
+		void _UpdateEvents(bool, bool);
+		void _WriteOutboundData();
+		void _DispatchInboundData (const char *buffer, unsigned long size);
+		void _DispatchCiphertext();
+		int _SendRawOutboundData (const char *buffer, unsigned long size);
+		void _CheckHandshakeStatus();
+
+};
+
+
+/************************
+class DatagramDescriptor
+************************/
+
+class DatagramDescriptor: public EventableDescriptor
+{
+	public:
+		DatagramDescriptor (SOCKET, EventMachine_t*);
+		virtual ~DatagramDescriptor();
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat();
+
+		virtual bool SelectForRead() {return true;}
+		virtual bool SelectForWrite();
+
+		int SendOutboundData (const char*, unsigned long);
+		int SendOutboundDatagram (const char*, unsigned long, const char*, int);
+
+		// Do we have any data to write? This is used by ShouldDelete.
+		virtual int GetOutboundDataSize() {return OutboundDataSize;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len);
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); };
+
+		virtual uint64_t GetCommInactivityTimeout();
+		virtual int SetCommInactivityTimeout (uint64_t value);
+
+	protected:
+		struct OutboundPage {
+			OutboundPage (const char *b, int l, struct sockaddr_in6 f, int o=0): Buffer(b), Length(l), Offset(o), From(f) {}
+			void Free() {if (Buffer) free (const_cast<char*>(Buffer)); }
+			const char *Buffer;
+			int Length;
+			int Offset;
+			struct sockaddr_in6 From;
+		};
+
+		std::deque<OutboundPage> OutboundPages;
+		int OutboundDataSize;
+
+		struct sockaddr_in6 ReturnAddress;
+};
+
+
+/************************
+class AcceptorDescriptor
+************************/
+
+class AcceptorDescriptor: public EventableDescriptor
+{
+	public:
+		AcceptorDescriptor (SOCKET, EventMachine_t*);
+		virtual ~AcceptorDescriptor();
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat();
+
+		virtual bool SelectForRead() {return true;}
+		virtual bool SelectForWrite() {return false;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return _GenericGetPeername (s, len); }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); };
+
+		static void StopAcceptor (const uintptr_t binding);
+};
+
+/********************
+class PipeDescriptor
+********************/
+
+#ifdef OS_UNIX
+class PipeDescriptor: public EventableDescriptor
+{
+	public:
+		PipeDescriptor (SOCKET, pid_t, EventMachine_t*);
+		virtual ~PipeDescriptor() NO_EXCEPT_FALSE;
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat();
+
+		virtual bool SelectForRead();
+		virtual bool SelectForWrite();
+
+		int SendOutboundData (const char*, unsigned long);
+		virtual int GetOutboundDataSize() {return OutboundDataSize;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return _GenericGetPeername (s, len); }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); }
+
+		virtual bool GetSubprocessPid (pid_t*);
+
+	protected:
+		struct OutboundPage {
+			OutboundPage (const char *b, int l, int o=0): Buffer(b), Length(l), Offset(o) {}
+			void Free() {if (Buffer) free (const_cast<char*>(Buffer)); }
+			const char *Buffer;
+			int Length;
+			int Offset;
+		};
+
+	protected:
+		bool bReadAttemptedAfterClose;
+
+		std::deque<OutboundPage> OutboundPages;
+		int OutboundDataSize;
+
+		pid_t SubprocessPid;
+
+	private:
+		void _DispatchInboundData (const char *buffer, int size);
+};
+#endif // OS_UNIX
+
+
+/************************
+class KeyboardDescriptor
+************************/
+
+class KeyboardDescriptor: public EventableDescriptor
+{
+	public:
+		KeyboardDescriptor (EventMachine_t*);
+		virtual ~KeyboardDescriptor();
+
+		virtual void Read();
+		virtual void Write();
+		virtual void Heartbeat();
+
+		virtual bool SelectForRead() {return true;}
+		virtual bool SelectForWrite() {return false;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return _GenericGetPeername (s, len); }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return _GenericGetSockname (s, len); }
+
+	protected:
+		bool bReadAttemptedAfterClose;
+
+	private:
+		void _DispatchInboundData (const char *buffer, int size);
+};
+
+
+/***********************
+class InotifyDescriptor
+************************/
+
+class InotifyDescriptor: public EventableDescriptor
+{
+	public:
+		InotifyDescriptor (EventMachine_t*);
+		virtual ~InotifyDescriptor();
+
+		void Read();
+		void Write();
+
+		virtual void Heartbeat() {}
+		virtual bool SelectForRead() {return true;}
+		virtual bool SelectForWrite() {return false;}
+
+		virtual bool GetPeername (struct sockaddr* s, socklen_t* len) { return false; }
+		virtual bool GetSockname (struct sockaddr* s, socklen_t* len) { return false; }
+};
+
+#endif // __EventableDescriptor__H_