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/*                                                      System dependencies in the W3 library
                                   SYSTEM DEPENDENCIES
                                             
   System-system differences for TCP include files and macros. This file includes for each
   system the files necessary for network and file I/O.  Part of libwww.
   
  AUTHORS
 
  TBL                     Tim Berners-Lee, W3 project, CERN, <timbl@info.cern.ch>
                         
  EvA                     Eelco van Asperen <evas@cs.few.eur.nl>
                         
  MA                      Marc Andreesen NCSA
                         
  MD                      Mark Donszelmann <duns@vxcern.cern.ch>
                         
  AT                      Aleksandar Totic <atotic@ncsa.uiuc.edu>
                         
  SCW                     Susan C. Weber <sweber@kyle.eitech.com>
                         
  HISTORY:
 
  22 Feb 91               Written (TBL) as part of the WWW library.
                         
  16 Jan 92               PC code from (EvA)
                         
  22 Apr 93               Merged diffs bits from xmosaic release
                         
  29 Apr 93               Windows/NT code from (SCW)
                         
  29 Sep 93               VMS fixes (MD)
                         
 */


#ifndef TCP_H
#define TCP_H

/*

Default values

   These values may be reset and altered by system-specific sections later on.  there are
   also a bunch of defaults at the end .
   
 */

/* 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 */


/*

Macintosh - MPW

   MPW is one development environment on the Mac.
   
   This entry was created by Aleksandar Totic (atotic@ncsa.uiuc.edu) this file is
   compatible with sockets package released by NCSA.  One major conflict is that this
   library redefines write/read/etc as macros.  In some of HTML code these macros get
   executed when they should not be. Such files should define NO_SOCKET_DEFS on top. This
   is a temporary hack.
   
 */

#ifdef applec                   /* MPW  */
#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 _ANSI_SOURCE
#define GUI
#define LINEFEED 10
#define ANON_FTP_HOSTNAME
#ifndef NO_SOCKET_DEFS
#include <MacSockDefs.h>
#endif

#include <socket.ext.h>
#include <string.h>

#endif                 /* MPW */



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

/*

Big Blue - the world of incompatibility

IBM RS600

   On the IBM RS-6000, AIX is almost Unix.
   
 */

#ifdef _AIX
#define AIX
#endif
#ifdef AIX
#define unix
#endif

/*    AIX 3.2
**    -------
*/


#ifdef _IBMR2
#define USE_DIRENT              /* sys V style directory open */
#endif


/*

IBM VM-CMS, VM-XA Mainframes

   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.
   
 */

#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

/*      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 */

/*

IBM-PC running Windows NT

   These parameters providede by  Susan C. Weber <sweber@kyle.eitech.com>.
   
 */

#ifdef _WINDOWS
#include "fcntl.h"                      /* For HTFile.c */
#include "sys\types.h"                  /* For HTFile.c */
#include "sys\stat.h"                   /* For HTFile.c */

#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 ? closesocket(s) : close(s))
#include <io.h>
#include <string.h>
#include <process.h>
#include <time.h>
#include <direct.h>
#include <stdio.h>
#include <winsock.h>
typedef struct sockaddr_in SockA;  /* See netinet/in.h */
#define INCLUDES_DONE
#define TCP_INCLUDES_DONE
#endif  /* WINDOWS */



/*

VAX/VMS

   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.  It works.
   
 */

#ifdef vms
#define CACHE_FILE_PREFIX  "SYS$LOGIN:Z_"

#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

/*

   On VMS machines, the linker needs to be told to put global data sections into a data
   segment using these storage classes. (MarkDonszelmann)
   
 */

#ifdef VAXC
#define GLOBALDEF globaldef
#define GLOBALREF globalref
#endif /*  VAXC */

#endif  /* vms */

/*

   On non-VMS machines, the GLOBALDEF and GLOBALREF storage types default to normal C
   storage types.
   
 */

#ifndef GLOBALREF
#define GLOBALDEF
#define GLOBALREF extern
#endif



/*

SCO ODT unix version

 */


#ifdef sco
#include <sys/fcntl.h>
#define USE_DIRENT
#endif

/*

MIPS unix

 */

/* Mips hack (bsd4.3/sysV mixture...) */

#ifdef mips
extern int errno;
#endif

/*

OSF/1

 */

#ifdef __osf__
#define USE_DIRENT
#endif /* OSF1 AXP */


/*

Regular BSD unix versions

   These are a default unix where not already defined specifically.
   
 */

#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 */

/*                      Directory reading stuff - BSD or SYS V
*/

#ifdef unix                    /* if this is to compile on a UNIX machine */
#define GOT_READ_DIR 1    /* if directory reading functions are available */
#ifdef USE_DIRENT             /* sys v version */
#include <dirent.h>
#define direct dirent
#else
#include <sys/dir.h>
#endif
#if defined(sun) && defined(__svr4__)
#include <sys/fcntl.h>
#include <limits.h>
#endif
#endif

/*

Defaults

  INCLUDE FILES FOR TCP
 
 */

#ifndef TCP_INCLUDES_DONE
#include <sys/socket.h>
#include <netinet/in.h>
#ifndef __hpux /* this may or may not be good -marc */
#include <arpa/inet.h>      /* Must be after netinet/in.h */
#endif
#include <netdb.h>
#endif  /* TCP includes */


/*

  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 */

/*

  M ACROS FOR CONVERTING CHARACTERS
 
 */

#ifndef TOASCII
#define TOASCII(c) (c)
#define FROMASCII(c) (c)
#endif

/*

  CACHE FILE PREFIX
 
   This is something onto which we tag something meaningful to make a cache file name.
   used in HTWSRC.c at least. If it is nor defined at all, caching is turned off.
   
 */

#ifndef CACHE_FILE_PREFIX
#ifdef unix
#define CACHE_FILE_PREFIX  "/usr/wsrc/"
#endif
#endif

#endif /* TCP_H */



/*

   end of system-specific file */