/*	System-system differences for TCP include files and macros     tcp.h
**	===========================================================
**
**
**	This file includes for each system, the files necessary for
**	network and file I/O
**
** Authors
**	TBL	Tim Berners-Lee, W3 project, CERN, <timbl@info.cern.ch>
**	EvA	Eelco van Asperen <evas@cs.few.eur.nl>
**
**  History:
**	22 Feb 91	Written (TBL) as part of the WWW project.
**	16 Jan 92	PC code from EvA
*/
#ifndef TCP_H
#define TCP_H

/* Default values of those: */
#define NETCLOSE close	    /* Routine to close a TCP-IP socket		*/
#define NETREAD  read	    /* Routine to read from a TCP-IP socket	*/
#define NETWRITE write	    /* Routine to write to a TCP-IP socket	*/

/* Unless stated otherwise, */
#define SELECT			/* Can handle >1 channel.		*/
#define GOT_SYSTEM		/* Can call shell with string		*/

#ifdef unix
#define GOT_PIPE
#endif
#ifdef VM
#define GOT_PIPE		/* Of sorts */
#endif

#ifdef DECNET
typedef struct sockaddr_dn SockA;  /* See netdnet/dn.h or custom vms.h */
#else /* Internet */
typedef struct sockaddr_in SockA;  /* See netinet/in.h */
#endif


/*	Macintosh - Think-C
**	-------------------
**
**	Think-C is one development environment on the Mac.
**
**	We recommend that you compile with 4-byte ints to be compatible
**	with MPW C.  We used Tom Milligan's s_socket library which was
**	written for 4 byte int, and the MacTCP library assumes 4-byte int.
*/
#ifdef THINK_C
#undef GOT_SYSTEM
#define DEBUG			/* Can't put it on the CC command line	*/
#define NO_UNIX_IO		/* getuid() missing			*/
#define NO_GETPID		/* getpid() does not exist 		*/
#define NO_GETWD		/* getwd() does not exist 		*/

#undef NETCLOSE		    /* Routine to close a TCP-IP socket		*/
#undef NETREAD		    /* Routine to read from a TCP-IP socket	*/
#undef NETWRITE 	    /* Routine to write to a TCP-IP socket	*/
#define NETCLOSE s_close    /* Routine to close a TCP-IP socket		*/
#define NETREAD  s_read	    /* Routine to read from a TCP-IP socket	*/
#define NETWRITE s_write    /* Routine to write to a TCP-IP socket	*/

#define bind s_bind	    /* Funny names presumably to prevent clashes */
#define connect s_connect
#define accept s_accept
#define listen s_listen
#define socket s_socket
#define getsockname s_getsockname

/* The function prototype checking is better than the include files
*/

extern s_close(int s);
extern s_read(int s, char *buffer, int buflen);
extern s_write(int s, const char *buffer, int buflen);

extern bind(int s, struct sockaddr *name, int namelen);
extern accept(int s, struct sockaddr *addr, int *addrlen);
extern listen(int s, int qlen);
extern connect(int s, struct sockaddr *addr, int addrlen);

extern s_socket(int domain, int type, int protocol);
extern s_getsockname(int s, struct sockaddr *name, int *namelen);
extern struct hostent *gethostent(const char * name);
extern unsigned long inet_addr(const char * name);

#endif /* THINK_C */


#ifndef STDIO_H
#include <stdio.h>
#define STDIO_H
#endif


/*	On the IBM RS-6000, AIX is almost Unix.
**	But AIX must be defined in the makefile.
*/
#ifdef AIX
#define unix
#endif

/*	MVS is compiled as for VM. MVS has no unix-style I/O
**	The command line compile options seem to come across in
**	lower case.
**
**	See aslo lots of VM stuff lower down.
*/
#ifdef mvs
#define MVS
#endif

#ifdef MVS
#define VM
#endif

#ifdef NEWLIB
#pragma linkage(newlib,OS)	/* Enables recursive NEWLIB */
#endif

/*	VM doesn't have a built-in predefined token, so we cheat: */
#ifndef VM
#include <string.h>		/* For bzero etc - not  VM */
#endif


/*	Under VMS, there are many versions of TCP-IP. Define one if you
**	do not use Digital's UCX product:
**
**		UCX		DEC's "Ultrix connection" (default)
**		WIN_TCP		From Wollongong, now GEC software.
**		MULTINET	From SRI, now from TGV Inv.
**		DECNET		Cern's TCP socket emulation over DECnet
**
**	The last three do not interfere with the unix i/o library, and so they
**	need special calls to read, write and close sockets. In these cases the
**	socket number is a VMS channel number, so we make the @@@ HORRIBLE @@@
**	assumption that a channel number will be greater than 10 but a
**	unix file descriptor less than 10.
*/
#ifdef vms
#ifdef WIN_TCP
#undef NETREAD
#undef NETWRITE
#undef NETCLOSE
#define NETREAD(s,b,l)	((s)>10 ? netread((s),(b),(l)) : read((s),(b),(l)))
#define NETWRITE(s,b,l)	((s)>10 ? netwrite((s),(b),(l)) : write((s),(b),(l)))
#define NETCLOSE(s) 	((s)>10 ? netclose(s) : close(s))
#endif

#ifdef MULTINET
#undef NETCLOSE
#undef NETREAD
#undef NETWRITE
#define NETREAD(s,b,l)	((s)>10 ? socket_read((s),(b),(l)) : read((s),(b),(l)))
#define NETWRITE(s,b,l)	((s)>10 ? socket_write((s),(b),(l)) : \
				write((s),(b),(l)))
#define NETCLOSE(s) 	((s)>10 ? socket_close(s) : close(s))
#endif

#ifdef DECNET
#undef SELECT  /* not supported */
#undef NETREAD
#undef NETWRITE
#undef NETCLOSE
#define NETREAD(s,b,l)	((s)>10 ? recv((s),(b),(l),0) : read((s),(b),(l)))
#define NETWRITE(s,b,l)	((s)>10 ? send((s),(b),(l),0) : write((s),(b),(l)))
#define NETCLOSE(s) 	((s)>10 ? socket_close(s) : close(s))
#endif /* Decnet */

/*	Certainly this works for UCX and Multinet; not tried for Wollongong
*/
#ifdef MULTINET
#include "multinet_root:[multinet.include.sys]types.h"
#include "multinet_root:[multinet.include]errno.h"
#include "multinet_root:[multinet.include.sys]time.h"
#else
#include types
#include errno
#include time
#endif /* multinet */

#include string

#ifndef STDIO_H
#include stdio
#define STDIO_H
#endif

#include file

#ifndef DECNET  /* Why is it used at all ? Types conflict with "types.h" */
#include unixio
#endif

#define INCLUDES_DONE

#ifdef MULTINET  /* Include from standard Multinet directories */
#include "multinet_root:[multinet.include.sys]socket.h"
#ifdef __TIME_LOADED  /* defined by sys$library:time.h */
#define __TIME  /* to avoid double definitions in next file */
#endif
#include "multinet_root:[multinet.include.netinet]in.h"
#include "multinet_root:[multinet.include.arpa]inet.h"
#include "multinet_root:[multinet.include]netdb.h"

#else  /* not multinet */
#ifdef DECNET
#include "types.h"  /* for socket.h */
#include "socket.h"
#include "dn"
#include "dnetdb"
/* #include "vms.h" */

#else /* UCX or WIN */
#include socket
#include in
#include inet
#include netdb

#endif  /* not DECNET */
#endif  /* of Multinet or other TCP includes */

#define TCP_INCLUDES_DONE

#endif	/* vms */


/*	IBM VM/CMS or MVS
**	-----------------
**
**	Note:	All include file names must have 8 chars max (+".h")
**
**	Under VM, compile with "(DEF=VM,SHORT_NAMES,DEBUG)"
**
**	Under MVS, compile with "NOMAR DEF(MVS)" to get rid of 72 char margin
**	  System include files TCPIP and COMMMAC neeed line number removal(!)
*/

#ifdef VM			/* or MVS -- see above. */
#define NOT_ASCII		/* char type is not ASCII */
#define NO_UNIX_IO		/* Unix I/O routines are not supported */
#define NO_GETPID		/* getpid() does not exist */
#define NO_GETWD		/* getwd() does not exist */
#ifndef SHORT_NAMES
#define SHORT_NAMES		/* 8 character uniqueness for globals */
#endif
#include <manifest.h>                                                           
#include <bsdtypes.h>                                                           
#include <stdefs.h>                                                             
#include <socket.h>                                                             
#include <in.h>
#include <inet.h>
#include <netdb.h>                                                                 
#include <errno.h>	    /* independent */
extern char asciitoebcdic[], ebcdictoascii[];
#define TOASCII(c)   (c=='\n' ?  10  : ebcdictoascii[c])
#define FROMASCII(c) (c== 10  ? '\n' : asciitoebcdic[c])                                   
#include <bsdtime.h>
#include <time.h>
#include <string.h>                                                            
#define INCLUDES_DONE
#define TCP_INCLUDES_DONE
#endif


/*	IBM-PC running MS-DOS with SunNFS for TCP/IP
**	---------------------
**
**	This code thanks to Eelco van Asperen <evas@cs.few.eur.nl>
*/

#ifdef PCNFS
#include <sys/types.h>
#include <string.h>


#include <errno.h>	    /* independent */
#include <sys/time.h>	    /* independent */
#include <sys/stat.h>
#include <fcntl.h>	    /* In place of sys/param and sys/file */
#define INCLUDES_DONE

#define FD_SET(fd,pmask) (*(unsigned*)(pmask)) |=  (1<<(fd))
#define FD_CLR(fd,pmask) (*(unsigned*)(pmask)) &= ~(1<<(fd))
#define FD_ZERO(pmask)   (*(unsigned*)(pmask))=0
#define FD_ISSET(fd,pmask) (*(unsigned*)(pmask) & (1<<(fd)))
#endif  /* PCNFS */


/*	Regular BSD unix versions:	(default)
**	-------------------------
*/

/* Mips hack (bsd4.3/sysV mixture...) */
#ifdef mips
extern int errno;
#endif

#ifndef INCLUDES_DONE
#include <sys/types.h>
/* #include <streams/streams.h>			not ultrix */
#include <string.h>

#include <errno.h>	    /* independent */
#include <sys/time.h>	    /* independent */
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/file.h>	    /* For open() etc */
#define INCLUDES_DONE
#endif	/* Normal includes */

#ifdef unix                    /* if this is to compile on a UNIX machine */
#include <sys/dir.h>
#define GOT_READ_DIR 1    /* if directory reading functions are available */
#endif

/*	Default include files for TCP
*/
#ifndef TCP_INCLUDES_DONE
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>	    /* Must be after netinet/in.h */
#include <netdb.h>
#endif	/* TCP includes */


/*	Default macros for manipulating masks for select()
*/
#ifdef SELECT
#ifndef FD_SET
typedef unsigned int fd_set;
#define FD_SET(fd,pmask) (*(pmask)) |=  (1<<(fd))
#define FD_CLR(fd,pmask) (*(pmask)) &= ~(1<<(fd))
#define FD_ZERO(pmask)   (*(pmask))=0
#define FD_ISSET(fd,pmask) (*(pmask) & (1<<(fd)))
#endif  /* FD_SET */
#endif  /* SELECT */

/*	Default macros for converting characters
**
*/
#ifndef TOASCII
#define TOASCII(c) (c)
#define FROMASCII(c) (c)                                   
#endif

/* Removed to HTUtils on Ed V's suggestion
*/
#ifdef OLD_CODE
#ifndef TOLOWER
#if defined(pyr) || defined(mips)
  /* Pyramid and Mips can't uppercase non-alpha */
#define TOLOWER(c) (isupper(c) ? tolower(c) : (c))
#define TOUPPER(c) (islower(c) ? toupper(c) : (c))
#else
#define TOLOWER(c) tolower(c)
#define TOUPPER(c) toupper(c)
#endif /* pyr || mips */
#endif /* ndef TOLOWER */
#endif /* OLD_CODE */

#endif /* TCP_H */