unix.h

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// Copyright (C) 1999-2002 Open Source Telecom Corporation.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of 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.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// As a special exception to the GNU General Public License, permission is
// granted for additional uses of the text contained in its release
// of Common C++.
//
// The exception is that, if you link the Common C++ library with other files
// to produce an executable, this does not by itself cause the
// resulting executable to be covered by the GNU General Public License.
// Your use of that executable is in no way restricted on account of
// linking the Common C++ library code into it.
//
// This exception does not however invalidate any other reasons why
// the executable file might be covered by the GNU General Public License.
//
// This exception applies only to the code released under the
// name Common C++.  If you copy code from other releases into a copy of
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.

#ifndef CCXX_UNIX_H_
#define CCXX_UNIX_H_

#ifndef CCXX_MISSING_H_
#include <cc++/missing.h>
#endif

#ifndef CCXX_SOCKET_H_
#include <cc++/socket.h>
#endif

#ifdef  CCXX_NAMESPACES
namespace ost {
#endif

#ifndef WIN32

 class UnixSocket : protected Socket
 {
 protected:
        friend class UnixStream;
        friend class SocketPort;
        friend class unixstream;

        void close(void);
        char *path;

 public:
        UnixSocket(const char* pathname, int backlog = 5);

        inline bool isPendingConnection(timeout_t timeout = TIMEOUT_INF) 
                {return Socket::isPending(pendingInput, timeout);}

        virtual ~UnixSocket()
                {close();};
 };

 class UnixStream : public Socket, public std::streambuf, public std::iostream
 {
 private:
        int doallocate();

 protected:
        timeout_t timeout;
        int bufsize;
        char *gbuf, *pbuf;

        UnixStream(bool throwflag = true);

        void allocate(int size);

        void endStream(void);

        virtual int underflow(void);

        int uflow(void);

        int overflow(int ch);

        void connect(const char* pathname, int size);

        std::iostream *unixstr(void)
                {return ((std::iostream *)this);};

 public:
        UnixStream(UnixSocket &server, int size = 512, bool throwflag = true, timeout_t timeout = 0);

        UnixStream(const char* pathname, int size = 512, bool throwflag = true, timeout_t to = 0);

        inline void setTimeout(timeout_t to)
                {timeout = to;};

        UnixStream(const UnixStream &source);

        virtual ~UnixStream()
                {endStream();};

        int sync(void);

        bool isPending(Pending pend, timeout_t timeout = TIMEOUT_INF);

        int getBufferSize(void) const
                {return bufsize;};
 };

 class unixstream : public UnixStream
 {
 public:
        unixstream();

        unixstream(const char *pathname, int buffer = 512);

        unixstream(UnixSocket &unixsock, int buffer = 512);

        void open(const char *pathname, int buffer = 512)
                { UnixStream::connect( pathname, buffer ); }

        void open(UnixSocket &unixsock, int buffer = 512);

        void close(void);

        bool operator!() const;
 };

 class UnixSession : public UnixStream, public Thread
 {
 protected:
        int waitConnection(timeout_t timeout = TIMEOUT_INF);

        CCXX_MEMBER(void) initial(void);

        CCXX_MEMBER(void) final(void)
                {delete this;};
 public:
        UnixSession(const char* pathname, int size = 512, int pri = 0, int stack = 0);

        UnixSession(UnixSocket &server, int size = 512,
                   int pri = 0, int stack = 0);
 };

#endif // ndef WIN32

#ifdef  CCXX_NAMESPACES
}
#endif

#endif

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