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195 lines
10 KiB
C++
195 lines
10 KiB
C++
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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// % Project : GUSI - Grand Unified Socket Interface
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// % File : GUSIMTInet.nw - Common routines for MacTCP
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// % Author : Matthias Neeracher
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// % Language : C++
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// %
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// % $Log: GUSIMTInet.h,v $
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// % Revision 1.1 2001/03/11 22:35:57 sgehani%netscape.com
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// % First Checked In.
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// %
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// % Revision 1.14 2000/10/16 04:34:23 neeri
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// % Releasing 2.1.2
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// %
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// % Revision 1.13 2000/05/23 07:03:25 neeri
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// % Improve formatting
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// %
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// % Revision 1.12 1999/08/26 05:45:04 neeri
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// % Fixes for literate edition of source code
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// %
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// % Revision 1.11 1999/08/02 07:02:43 neeri
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// % Support for asynchronous errors and other socket options
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// %
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// % Revision 1.10 1999/06/30 07:42:06 neeri
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// % Getting ready to release 2.0b3
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// %
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// % Revision 1.9 1999/05/29 06:26:43 neeri
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// % Fixed header guards
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// %
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// % Revision 1.8 1999/04/29 05:33:19 neeri
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// % Fix fcntl prototype
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// %
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// % Revision 1.7 1999/03/17 09:05:08 neeri
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// % Added GUSITimer, expanded docs
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// %
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// % Revision 1.6 1998/10/25 11:57:35 neeri
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// % Ready to release 2.0a3
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// %
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// % Revision 1.5 1998/10/11 16:45:16 neeri
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// % Ready to release 2.0a2
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// %
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// % Revision 1.4 1998/02/11 12:57:12 neeri
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// % PowerPC Build
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// %
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// % Revision 1.3 1998/01/25 20:53:55 neeri
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// % Engine implemented, except for signals & scheduling
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// %
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// % Revision 1.2 1996/12/22 19:57:56 neeri
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// % TCP streams work
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// %
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// % Revision 1.1 1996/12/16 02:12:40 neeri
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// % TCP Sockets sort of work
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// %
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// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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//
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// \chapter{Basic MacTCP code}
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//
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// A [[GUSIMTInetSocket]] defines the infrastructure shared between
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// MacTCP TCP and UDP sockets.
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//
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// <GUSIMTInet.h>=
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#ifndef _GUSIMTInet_
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#define _GUSIMTInet_
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#ifdef GUSI_SOURCE
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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// <Definition of [[GUSIwithMTInetSockets]]>=
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void GUSIwithMTInetSockets();
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__END_DECLS
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#ifdef GUSI_INTERNAL
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#include "GUSISocket.h"
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#include "GUSISocketMixins.h"
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#include <netinet/in.h>
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#include <MacTCP.h>
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// \section{Definition of [[GUSIMTInetSocket]]}
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//
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// MacTCP related sockets are buffered, have a standard state model, and can be
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// nonblocking.
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//
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// <Definition of class [[GUSIMTInetSocket]]>=
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class GUSIMTInetSocket :
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public GUSISocket,
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protected GUSISMBlocking,
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protected GUSISMState,
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protected GUSISMInputBuffer,
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protected GUSISMOutputBuffer,
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protected GUSISMAsyncError
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{
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public:
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GUSIMTInetSocket();
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// [[bind]] for MacTCP sockets has the fatal flaw that it is totally unable to
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// reserve a socket.
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int bind(void * addr, socklen_t namelen);
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// [[getsockname]] and [[getpeername]] return the stored values.
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int getsockname(void * addr, socklen_t * namelen);
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virtual int getpeername(void * addr, socklen_t * namelen);
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// [[shutdown]] just delegates to [[GUSISMState]].
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int shutdown(int how);
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// [[fcntl]] handles the blocking support.
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int fcntl(int cmd, va_list arg);
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// [[ioctl]] deals with blocking support and with [[FIONREAD]].
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int ioctl(unsigned int request, va_list arg);
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// [[getsockopt]] and [[setsockopt]] are available for setting buffer sizes and
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// getting asynchronous errors.
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int getsockopt(int level, int optname, void *optval, socklen_t * optlen);
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual int setsockopt(int level, int optname, void *optval, socklen_t optlen);
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// MacTCP sockets implement socket style calls.
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//
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// <Overridden member functions for [[GUSIMTInetSocket]]>=
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virtual bool Supports(ConfigOption config);
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// MacTCP I/O calls communicate by means of read and write data structures,
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// of which we need only the most primitive variants.
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//
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// <Definition of classes [[MiniWDS]] and [[MidiWDS]]>=
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=mac68k
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#endif
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class MiniWDS {
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public:
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u_short fLength;
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char * fDataPtr;
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u_short fZero;
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MiniWDS() : fZero(0) {}
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Ptr operator &() { return (Ptr)this; }
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};
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class MidiWDS {
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public:
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u_short fLength;
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char * fDataPtr;
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u_short fLength2;
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char * fDataPtr2;
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u_short fZero;
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MidiWDS() : fZero(0) {}
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Ptr operator &() { return (Ptr)this; }
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};
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=reset
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#endif
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// The only other interesting bit in the interface is the driver management, which
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// arranges to open the MacTCP driver and domain name resolver at most once,
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// as late as possible in the program (If you open some SLIP or PPP drivers
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// before the Toolbox is initialized, you'll wish you'd curled up by the fireside
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// with a nice Lovecraft novel instead). [[Driver]] returns the driver reference
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// number of the MacTCP driver. [[HostAddr]] returns our host's IP address.
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//
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// <MacTCP driver management>=
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static short Driver();
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static u_long HostAddr();
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protected:
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// All MacTCP related sockets need a [[StreamPtr]]; they store their own and
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// their peer's address away, and the save errors reported at interrupt time
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// in an [[fAsyncError]] field.
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//
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// <Data members for [[GUSIMTInetSocket]]>=
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StreamPtr fStream;
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sockaddr_in fSockAddr;
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sockaddr_in fPeerAddr;
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// \section{Implementation of [[GUSIMTInetSocket]]}
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//
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// [[Driver]] preserves error status in an [[OSErr]]
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// variable, initially [[1]] to convey unresolvedness.
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//
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// <Data members for [[GUSIMTInetSocket]]>=
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static short sDrvrRefNum;
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static OSErr sDrvrState;
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static u_long sHostAddress;
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};
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#endif /* GUSI_INTERNAL */
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#endif /* GUSI_SOURCE */
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#endif /* _GUSIMTInet_ */
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