/*                                         W3C Sample Code Library libwww System Dependencies
                                   SYSTEM DEPENDENCIES
                                             
 */
/*
**      (c) COPYRIGHT MIT 1995.
**      Please first read the full copyright statement in the file COPYRIGH.
*/
/*

   This file makes up for the differencies in the systems and platforms supported by
   libwww. On Unix, it is a question of using autoconf to figure out what environment we
   are in. This is done by running the configure script which creates a config.h file.
   This configuration include file contains a large set of macro definitions telling what
   features we have and don't have. On platforms not supported by autoconf (Windows, Mac,
   VMS etc.) you will find the information normally contained in the config.h file
   directly included below. The second part of this file uses all the information that we
   either have from the config.h file or directly coded and actually does the includes
   etc.
   
      Unix
      
      Microsoft Windows Win32 API
      
      Macintosh
      
      Vax VMS
      
   This module is a part of the W3C Sample Code Library.
   
  Authors
  
  TBL                    Tim Berners-Lee, W3 project, CERN, <timbl@w3.org>
                         
  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>
                         
  HF                     Henrik Frystyk, <frystyk@w3.org>
                         
  CLB                    Charlie Brooks, <cbrooks@osf.org>
                         
  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              Mar 96 CLB - changed SLEEP() macro for Windows/NT MSC compiler
                         added BOOLEAN_DEFINED macro to avoid duplicate definitions in
                         HUtils.h changed netread() macros to support reading from
                         stdin,etc. as well as sockets. (Required for linemode browser to
                         work).
                         
  Henrik                 Changed to support autoconf for Unix
                         
 */
#ifndef SYSDEP_H
#define SYSDEP_H
/*

                                 PLATFORM SPECIFIC STUFF
                                             
UNIX

   We rely on autoconf to do the dirty job. If you have any changhes then please add them
   to the configure script
   
 */
#ifdef HAVE_CONFIG_H
#include "../libwww/config.h"
#endif
/*

MICROSOFT WINDOWS WIN32 API

   Help provided by Eric Prud'hommeaux, Susan C. Weber <sweber@kyle.eitech.com>, Paul
   Hounslow <P.M.Hounslow@reading.ac.uk>, and a lot of other PC people.
   
 */
#if defined(_WINDOWS) || defined(_CONSOLE)
#define WWW_MSWINDOWS
#endif

#if defined(_WINDOWS) && !defined (_CONSOLE)
#define WWW_WIN_WINDOW
#endif

#if defined(_CONSOLE)
#define WWW_WIN_CONSOLE
#endif

#ifdef WWW_MSWINDOWS

#include "windows/config.h"

#include <windows.h>
#include <fcntl.h>
#include <sys\types.h>
#include <sys\stat.h>

#define NETREAD(s,b,l)  recv((s),(b),(l),0)
#define NETWRITE(s,b,l) send((s),(b),(l),0)
#define NETCLOSE(s)     closesocket(s)
#define IOCTL(s,c,a)    ioctlsocket(s,c, (long *) a)

#define MKDIR(a,b)      mkdir((a))
#define REMOVE(a)       remove((a))
#define DEFAULT_SUFFIXES        "."

#ifdef TTY_IS_SELECTABLE
#undef TTY_IS_SELECTABLE
#endif

#include <io.h>
#include <string.h>
#include <process.h>
#include <time.h>
#include <direct.h>

#define HAVE_STDIO_H
#define HAVE_STRERROR

/*
**  tempnam() has very hard problems on windows accepting a directory
**  in the calling argument.
*/
/* #define HAVE_TEMPNAM */

#include <stdlib.h>
#include <winsock.h>

#ifndef _CONSOLE
#define NO_STDIO
#endif

#undef HAVE_GETPASS
#undef HAVE_ALTZONE
#define NO_GETWD
#define HAVE_GETCWD
#define BOOLEAN                         /* Windows have BOOLEAN defined */

#undef HAVE_GETDOMAINNAME

#define SOCKET SOCKET                   /* WinSocks socket descriptor */
#define INVSOC INVALID_SOCKET           /* WinSocks invalid socket */

#define DESIRED_WINSOCK_VERSION 0x0101  /* we'd like winsock ver 1.1... */
#define MINIMUM_WINSOCK_VERSION 0x0101  /* ...but we'll take ver 1.1 :) */
/*

  File and Directory Access
  
   These next defintions are because the UNIX stuff is not supplied with BC4 (Paul
   Hounslow <P.M.Hounslow@reading.ac.uk>)
   
 */
#define NO_UNIX_IO

typedef unsigned long mode_t;

#define _IFMT           0170000 /* type of file */
#define _IFDIR          0040000 /* directory */
#define _IFCHR          0020000 /* character special */
#define _IFBLK          0060000 /* block special */
#define _IFREG          0100000 /* regular */
#define _IFLNK          0120000 /* symbolic link */
#define _IFSOCK         0140000 /* socket */
#define _IFIFO          0010000 /* fifo */

#define S_ISUID         0004000 /* set user id on execution */
#define S_ISGID         0002000 /* set group id on execution */
#define S_ISVTX         0001000 /* save swapped text even after use */

#ifdef S_IREAD
#undef S_IREAD
#define S_IREAD         0000400 /* read permission, owner */
#endif

#ifdef S_IWRITE
#undef S_IWRITE
#define S_IWRITE        0000200 /* write permission, owner */
#endif

#ifdef S_IEXEC
#undef S_IEXEC
#define S_IEXEC         0000100 /* execute/search permission, owner */
#endif

#define S_ENFMT         0002000 /* enforcement-mode locking */

#ifdef S_IFMT
#undef S_IFMT
#define S_IFMT          _IFMT
#endif

#ifdef S_IDIR
#undef S_IDIR
#define S_IFDIR         _IFDIR
#endif

#ifdef S_IFCHR
#undef S_IFCHR
#define S_IFCHR         _IFCHR
#endif

#ifdef S_IBLK
#undef S_IBLK
#define S_IFBLK         _IFBLK
#endif

#ifdef S_IREG
#undef S_IREG
#define S_IFREG         _IFREG
#endif

#define S_IFLNK         _IFLNK

#ifdef S_IFIFO
#undef S_IFIFO
#define S_IFIFO         _IFIFO
#endif

#define S_IRWXU         0000700 /* rwx, owner */
#define         S_IRUSR 0000400 /* read permission, owner */
#define         S_IWUSR 0000200 /* write permission, owner */
#define         S_IXUSR 0000100 /* execute/search permission, owner */
#define S_IRWXG         0000070 /* rwx, group */
#define         S_IRGRP 0000040 /* read permission, group */
#define         S_IWGRP 0000020 /* write permission, grougroup */
#define         S_IXGRP 0000010 /* execute/search permission, group */
#define S_IRWXO         0000007 /* rwx, other */
#define         S_IROTH 0000004 /* read permission, other */
#define         S_IWOTH 0000002 /* write permission, other */
#define         S_IXOTH 0000001 /* execute/search permission, other */

#define S_ISREG(m)      (((m)&_IFMT) == _IFREG)
/*

  Errno and Return Codes
  
   Winsock has its own errno codes and it returns them through WSAGetLastError(). However,
   it does also support BSD error codes, so we make a compromise. WSA definitions moved
   from _WIN32 ifdef by EGP
   
 */
#define socerrno WSAGetLastError()
#define ERRNO_DONE
/*

   Return code for socket functions. We can't use -1 as return value
   
 */
#define EWOULDBLOCK     WSAEWOULDBLOCK
#define EINPROGRESS     WSAEINPROGRESS
#define ECONNREFUSED    WSAECONNREFUSED
#define ETIMEDOUT       WSAETIMEDOUT
#define ENETUNREACH     WSAENETUNREACH
#define EHOSTUNREACH    WSAEHOSTUNREACH
#define EHOSTDOWN       WSAEHOSTDOWN
#define EISCONN         WSAEISCONN
#define EINVAL          WSAEINVAL

/* Some compilers do only define WIN32 and NOT _WINDOWS */
#define NO_GROUPS

#ifdef _WIN32
#define MKDIR(a,b)      mkdir((a))     /* CLB NT has mkdir, but only one arg */
#define SLEEP(n)        Sleep((n)*1000)
#else
#define MKDIR(a,b)      _mkdir((a))    /* CLB NT has mkdir, but only one arg */
#endif /* WIN32 */

#endif /* WWW_MSWINDOWS */
/*

MACINTOSH

   We have two environments on Macintosh: Codeworrior and MPV.
   
  Metrowerks Codewarrior 6
  
   Metrowerks Codewarrior is one development environment on the Mac. We are using GUSI
   (1.5.9) by Matthias Neeracher <neeri@iis.ee.ethz.ch> for our socket lib. You can find
   more information about the GUSI Library from Switzerland.
   
   Compiles on PPC. Should compile on 68K.
   
   August 31, 1995 by Steven T. Roussey <sroussey@eng.uci.edu> (STR). and jeff@macalot.com
   (Jeff Dripps). Thanks a bunch!
   
 */
#ifdef __MWERKS__
#include <gusi.h>
#include <dirent.h>
#include <errno.h>
#include <sys/errno.h>
#include <sioux.h>

#define INCLUDES_DONE
#define TCP_INCLUDES_DONE

#define GUSI                    /* Identifies changes made for GUSI */

#undef  HAVE_GETDOMAINNAME      /* STR */
#undef  HAVE_GETPASS
#undef  HAVE_GETWD

#define HAVE_GETCWD
#define USE_DIRENT
#define NO_GROUPS
#define GOT_READ_DIR

#undef  HAVE_TIMEZONE           /* STR */
#define NO_GMTOFF
#define HAVE_STRERROR
#define HAVE_GETHOSTNAME

#define d_ino           d_fileno        /* backward compatibility */

#define SLEEP(n)        GUSIDefaultSpin( SP_SLEEP, n/60)

#define MKDIR(a,b)      mkdir(a)

#define HAVE_STRFTIME           // added JTD:5/1/96
#define HAVE_MKTIME             // added JTD:5/1/96
#define HAVE_STRCHR             // added JTD:5/1/96
#define STDC_HEADERS            // added JTD:5/1/96
#define HAVE_MEMCPY             // added JTD:5/1/96
#define TTY_IS_SELECTABLE       // added JTD:5/1/96
#define HAVE_READDIR            // added JTD:5/1/96
#define HAVE_DIRENT_INO         // added JTD:5/1/96
#define HAVE_DIRENT_H           // added JTD:5/1/96

#endif
/*

  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 HAVE_SYSTEM
#define DEBUG                   /* Can't put it on the CC command line */

#define NO_UNIX_IO              /* getuid() missing */
#undef  HAVE_GETPID             /* getpid() does not exist */
#define NO_GETWD                /* getwd() does not exist */

#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 /* NO_SOCKET_DEFS */

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

#endif /* applec MPW */
/*

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
#include "HTVMSUtils.h"
#define CACHE_FILE_PREFIX       "SYS$LOGIN:Z_"
#define DEFAULT_SUFFIXES        "._"

#define HAVE_CUSERID

#ifdef WIN_TCP
#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 /* WIN_TCP */

#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))
#define IOCTL(s,c,a)    socket_ioctl(s,c,a);
#endif /* MULTINET */

#ifdef DECNET
#define DNP_OBJ 80      /* This one doesn't look busy, but we must check */
                        /* That one was for decnet */
#undef SELECT           /* not supported */
#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))

#undef HAVE_GETHOSTNAME                 /* Decnet doesn't have a name server */
#endif /* Decnet */

#undef HAVE_GETDOMAINNAME

/*      Certainly this works for UCX and Multinet; not tried for Wollongong
*/
#ifdef MULTINET
#include <time.h>
#ifdef __TIME_T
#define __TYPES
#define __TYPES_LOADED
#endif /* __TIME_T */
#include <multinet_root:[multinet.include.sys]types.h>
#include <multinet_root:[multinet.include]errno.h>
#ifdef __TYPES
#define __TIME_T
#endif /* __TYPE */
#ifdef __TIME_LOADED
#define __TIME
#endif /* __TIME_LOADED */
#include <multinet_root:[multinet.include.sys]time.h>
#else /* not MULTINET */
#include <types.h>
#include <errno.h>
#include <time.h>
#endif /* not 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>
#include <multinet_root:[multinet.include.sys]ioctl.h>

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

#else /* UCX or WIN */
#ifdef CADDR_T
#define __CADDR_T
#endif /* problem with xlib.h inclusion */
#include <socket.h>
#include <in.h>
#include <inet.h>
#include <netdb.h>
#include <ucx$inetdef.h>

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

#define TCP_INCLUDES_DONE

#ifdef UCX
#define SIMPLE_TELNET
#endif
/*

   On VMS directory browsing is available through a separate copy of dirent.c. The
   definition of R_OK seem to be missing from the system include files...
   
 */
#define USE_DIRENT
#define GOT_READ_DIR
#include <dirent.h>
#define DIR struct dirent
#define R_OK 4
/*

   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
/*

   On non-VMS machines STAT should be stat...On VMS machines STAT is a function that
   converts directories and devices so that you can stat them.
   
 */
#ifdef VMS
typedef unsigned long mode_t;
#define HT_STAT         HTStat
#define HT_LSTAT        HTStat
#else
#define HT_STAT         stat
#define HT_LSTAT        lstat
#endif /* non VMS */
/*

  Dynamic Memory
  
   Replace memory allocation and free C RTL functions with VAXC$xxx_OPT alternatives for
   VAXC (but not DECC) on VMS. This makes a big performance difference. (Foteos Macrides).
   Also have a look at the Dynamic Memory Module for how to handle malloc and calloc.
   
 */
#ifdef VMS
#include <stdio.h>
#include <stdlib.h>
#include <unixlib.h>
#include <ctype.h>
#if defined(VAXC) && !defined(__DECC)
#define malloc  VAXC$MALLOC_OPT
#define calloc  VAXC$CALLOC_OPT
#define free    VAXC$FREE_OPT
#define cfree   VAXC$CFREE_OPT
#define realloc VAXC$REALLOC_OPT
#endif /* VAXC but not DECC */
#define unlink remove
#define gmtime localtime
#include <stat.h>
#define S_ISDIR(m)      (((m)&S_IFMT) == S_IFDIR)
#define S_ISREG(m)      (((m)&S_IFMT) == S_IFREG)
#define putenv HTVMS_putenv
#endif /* VMS */
/*

  Strftime and other time stuff
  
 */
#ifdef VMS
#ifndef DECC
#undef  HAVE_STRFTIME
#endif
#undef  HAVE_MKTIME
#undef  HAVE_TIMEGM
#define NO_GMTOFF
#undef  HAVE_TIMEZONE
#endif

#ifdef WWW_MSWINDOWS
#define HAVE_MKTIME
#define HAVE_STRFTIME
#endif
/*

  Definition of Errno
  
 */
#ifdef VMS
#ifndef __DECC
extern int uerrno;      /* Deposit of error info (as per errno.h) */
extern volatile noshare int socket_errno; /* socket VMS error info
                                          (used for translation of vmserrno) */
extern volatile noshare int vmserrno;   /* Deposit of VMS error info */
extern volatile noshare int errno;  /* noshare to avoid PSECT conflict */
#define ERRNO_DONE
#endif /* not DECC */
#endif /* VMS */
/*

   
   ___________________________________
   
                                PLATFORM INDEPENDENT STUFF
                                             
   Here we use all the knowledge we got above...
   
INCLUDE FILES

   This file includes all system header files that are needed, iff they exist. Their
   existance is discovered by configure.
   
 */
/* stdio.h */
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif

/* types.h */
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#else
#ifdef HAVE_TYPES_H
#include <types.h>
#endif
#endif

/* unistd.h */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#else
#ifdef HAVE_SYS_UNISTD_H
#include <sys/unistd.h>
#endif
#endif

/* fcntl.h */
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#else
#ifdef HAVE_SYS_FCNTL_H
#include <sys/fcntl.h>
#endif
#endif

/* limits.h */
#ifdef HAVE_SYS_LIMITS_H
#include <sys/limits.h>
#else
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#endif

/* stat.h */
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#else
#ifdef HAVE_STAT_H
#include <stat.h>
#endif
#endif

/* tcp.h */
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#else
#ifdef HAVE_TCP_H
#include <tcp.h>
#endif
#endif

/* file.h */
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif

/* systeminfo.h */
#ifdef HAVE_SYS_SYSTEMINFO_H
#include <sys/systeminfo.h>
#endif

/* ioctl.h */
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif

/* termios.h */
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif

/* time.h */
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#endif
#endif

/* string{,s}.h */
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif

/* syslog.h */
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif

/* socket.h */
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#else
#ifdef HAVE_SOCKET_H
#include <socket.h>
#endif
#endif

/* socket.ext.h */
#ifdef HAVE_SOCKET_EXT_H
#include <socket.ext.h>
#endif

/* appkit.h */
#ifdef HAVE_APPKIT_APPKIT_H
#include <appkit/appkit.h>
#else
#ifdef HAVE_APPKIT_H
#include <appkit.h>
#endif
#endif

/* in.h */
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#else
#ifdef HAVE_IN_H
#include <in.h>
#endif
#endif

/* dn.h */
#ifdef HAVE_DN_H
#include <dn.h>
#endif

/* ipc.h */
#ifdef HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif

/* errno.h */
#ifdef HAVE_ERRNO_H
#include <errno.h>
#else
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#else
#ifdef HAVE_NET_ERRNO_H
#include <net/errno.h>
#endif
#endif
#endif

/* pwd.h */
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif

/* grp.h */
#ifdef HAVE_GRP_H
#include <grp.h>
#endif

/* inet.h */
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#else
#ifdef HAVE_INET_H
#include <inet.h>
#endif
#endif

/* netdb.h */
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif

/* manifest.h */
#ifdef HAVE_MANIFEST_H
#include <manifest.h>
#endif

/* bsdtypes.h */
#ifdef HAVE_BSDTYPES_H
#include <bsdtypes.h>
#endif

/* stdefs.h */
#ifdef HAVE_STDEFS_H
#include <stdefs.h>
#endif

/* bsdtime.h */
#ifdef HAVE_BSDTIME_H
#include <bsdtime.h>
#endif

/* select.h */
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#else
#ifdef HAVE_SELECT_H
#include <select.h>
#endif
#endif

/* dnetdb.h */
#ifdef HAVE_DNETDB_H
#include <dnetdb.h>
#endif

/* ucx$inetdef.h */
#ifdef HAVE_UCX_INETDEF_H
#include <ucx$inetdef.h>
#endif

/* libc.h */
#ifdef HAVE_LIBC_H
#include <libc.h>
#endif

/* stdlib.h */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

/* malloc.h */
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif

/* memory.h */
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif

/* unixlib.h */
#ifdef HAVE_UNIXLIB_H
#include <unixlib.h>
#endif

/* ctype.h */
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif

/* curses.h */
#ifdef CURSES
#ifdef HAVE_CURSESX_H
#include <cursesX.h>
#else
#ifdef HAVE_CURSES_H
#include <curses.h>
#endif
#endif
#endif

/* resource.h (some wait.h's require it) */
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#else
#ifdef HAVE_RESOURCE_H
#include <resource.h>
#endif
#endif

/* dirent.h / ndir.h / dir.h */
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#define NAMLEN(dirent) strlen((dirent)->d_name)
#else
#define dirent direct
#define NAMLEN(dirent) (dirent)->d_namlen
#ifdef HAVE_SYS_NDIR_H
#include <sys/ndir.h>
#endif
#ifdef HAVE_SYS_DIR_H
#include <sys/dir.h>
#endif
#ifdef HAVE_DIR_H
#include <dir.h>
#endif
#ifdef HAVE_NDIR_H
#include <ndir.h>
#endif
#endif

#if !defined(HAVE_STRCHR) && !defined(WWW_MSWINDOWS)
#define strchr index
#define strrchr rindex
#endif
#if !defined(HAVE_MEMCPY) && !defined(WWW_MSWINDOWS)
#define memcpy(d, s, n) bcopy((s), (d), (n))
#define memmove(d, s, n) bcopy((s), (d), (n))
#endif

/* Definition of var args */
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#else
#ifndef WWW_MSWINDOWS
#include <varargs.h>
#endif
#endif

/* wait.h */
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifndef WEXITSTATUS
#define WEXITSTATUS(stat_val) (((unsigned)(stat_val) >> 8) & 255)
#endif
#ifndef WIFEXITED
#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
#endif
/*

BOOLEANS

 */
#if !defined(BOOLEAN)
typedef char    BOOLEAN;                                    /* Logical value */
#endif

#ifndef CURSES
#ifndef TRUE
#define TRUE    (BOOLEAN)1
#define FALSE   (BOOLEAN)0
#endif
#endif   /*  CURSES  */

#if !defined(BOOL) && !defined(WWW_MSWINDOWS)
#define BOOL BOOLEAN
#endif

#ifndef YES
#define YES             (BOOL)1
#define NO              (BOOL)0
#endif
/*

NULL DEFINITION

 */
#ifndef NULL
#define NULL ((void *)0)
#endif
/*

SLEEP SYSTEM CALL

   Some systems use milliseconds instead of seconds
   
 */
#ifndef SLEEP
#define SLEEP(n)        sleep(n)
#endif
/*

SOCKS

   SOCKS is a package for allowing socket connections to tunnel through firewalls in
   carefully controlled situations. This package can be optionally compiled with SOCKS
   support; these definitions replace the normal socket calls with the SOCKS ones. Initial
   modification of the library is credited to Ian Dunkin <imd1707@ggr.co.uk>.
   
 */
#ifdef SOCKS
#ifdef SOCKS4
#define connect         Rconnect
#define getsockname     Rgetsockname
#define getpeername     Rgetpeername
#define bind            Rbind
#define accept          Raccept
#define listen          Rlisten
#define select          Rselect
#define recvfrom        Rrecvfrom
#define sendto          Rsendto
#define recv            Rrecv
#define send            Rsend
#define read            Rread
#define write           Rwrite
#define rresvport       Rrresvport
#define shutdown        Rshutdown
#define listen          Rlisten
#define close           Rclose
#define dup             Rdup
#define dup2            Rdup2
#define fclose          Rfclose
#define gethostbyname   Rgethostbyname
#else
#ifdef SOCKS5
#define connect         SOCKSconnect
#define getsockname     SOCKSgetsockname
#define getpeername     SOCKSgetpeername
#define bind            SOCKSbind
#define accept          SOCKSaccept
#define listen          SOCKSlisten
#define select          SOCKSselect
#define recvfrom        SOCKSrecvfrom
#define sendto          SOCKSsendto
#define recv            SOCKSrecv
#define send            SOCKSsend
#define read            SOCKSread
#define write           SOCKSwrite
#define rresvport       SOCKSrresvport
#define shutdown        SOCKSshutdown
#define listen          SOCKSlisten
#define close           SOCKSclose
#define dup             SOCKSdup
#define dup2            SOCKSdup2
#define fclose          SOCKSfclose
#define gethostbyname   SOCKSgethostbyname
#endif /* SOCKS5 */
#endif /* SOCKS4 */
#endif /* SOCKS */
/*

NETWORK FAMILY

 */
#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
/*

DEFAULT VALUES OF NETWORK ACCESS

 */
#ifndef NETCLOSE
#define NETCLOSE close          /* Routine to close a TCP-IP socket */
#endif

#ifndef NETREAD
#define NETREAD  read           /* Routine to read from a TCP-IP socket */
#endif

#ifndef NETWRITE
#define NETWRITE write          /* Routine to write to a TCP-IP socket */
#endif

#ifndef NETWRITEV
#define NETWRITEV writev
#endif
/*

DEFINITION OF ERRNO AND RETURN CODE

   This is the definition of error codes and the corresponding string constants. If we do
   not have the strerror function then try the error list table.
   
 */
#ifndef ERRNO_DONE
extern int errno;
#define socerrno errno
#endif

#ifndef HAVE_STRERROR                             /* Otherwise use the table */
extern char *sys_errlist[];
extern int sys_nerr;
#endif
/*

DEFINITION OF SOCKET DESRCIPTORES

   This is necessary in order to support Windows NT...
   
 */
#ifndef SOCKET
#define SOCKET int              /* Unix like socket descriptor */
#define INVSOC (-1)             /* Unix invalid socket */
#endif

#ifdef __svr4__
#define HT_BACKLOG 32            /* Number of pending connect requests (TCP) */
#else
#define HT_BACKLOG 5             /* Number of pending connect requests (TCP) */
#endif /* __svr4__ */
/*

ADDITIONAL NETWORK VARIABLES FOR SOCKET, FILE ACCESS BITS

 */
#if 0
#ifndef _WINSOCKAPI_
#define FD_READ         0x01
#define FD_WRITE        0x02
#define FD_OOB          0x04
#define FD_ACCEPT       0x08
#define FD_CONNECT      0x10
#define FD_CLOSE        0x20
#endif /* _WINSOCKAPI_ */
#endif
/*

ROUGH ESTIMATE OF MAX PATH LENGTH

 */
#ifndef HT_MAX_PATH
#ifdef MAXPATHLEN
#define HT_MAX_PATH MAXPATHLEN
#else
#ifdef PATH_MAX
#define HT_MAX_PATH PATH_MAX
#else
#define HT_MAX_PATH 1024                        /* Any better ideas? */
#endif
#endif
#endif /* HT_MAX_PATH */

#ifndef HT_MAX_TMPNAM
#ifdef L_tmpnam
#define HT_MAX_TMPNAM   L_tmpnam
#else
#define HT_MAX_TMPNAM   128
#endif
#endif
/*

DEFINITION OF NGROUPS

 */
#ifdef GETGROUPS_T
#ifndef NGROUPS
#ifdef NGROUPS_MAX
#define NGROUPS         NGROUPS_MAX
#else
#define NGROUPS         20                      /* Any better ideas? */
#endif
#endif
#endif
/*

DEFINITION OF MAX DOMAIN NAME LENGTH

 */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64                       /* Any better ideas? */
#endif
/*

FILE/DIRECTORY MANAGEMENT

 */
#ifndef MKDIR
#define MKDIR(a,b)      mkdir((a), (b))
#endif

#ifndef RMDIR
#define RMDIR(a)        rmdir((a))
#endif

#ifndef REMOVE
#define REMOVE(a)       unlink((a))
#endif

#ifndef DEFAULT_SUFFIXES
#define DEFAULT_SUFFIXES        ".,_"
#endif

#ifndef F_OK
#define R_OK    4
#define W_OK    2
#define X_OK    1
#define F_OK    0
#endif
/*

MACROS FOR MANIPULATING MASKS FOR SELECT()

 */
#ifndef FD_SET
#define FD_SET(fd, m) (*(unsigned*)(m) |=  (1 << (fd)))
#endif

#ifndef FD_CLR
#define FD_CLR(fd, m) (*(unsigned*)(m) &= ~(1 << (fd)))
#endif

#ifndef FD_ZERO
#define FD_ZERO(m)    (*(unsigned*)(m)) = 0
#endif

#ifndef FD_ISSET
#define FD_ISSET(fd, m) (*(unsigned*)(m) & (1 << (fd)))
#endif
/*

MACROS 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 not defined at all, caching is turned off.
   
 */
#ifndef CACHE_FILE_PREFIX
#ifdef unix
#define CACHE_FILE_PREFIX  "/usr/wsrc/"
#endif
#endif
/*

THREAD SAFE SETUP

   These are some constants setting the size of buffers used by thread safe versions of
   some system calls.
   
 */
#ifdef HT_REENTRANT
#define HOSTENT_MAX     128
#define CTIME_MAX       26
#endif /* HT_REENTRANT */
/*

TYPES

   We define some types here so we son't have to worry about it later
   
 */
typedef unsigned long ms_t;
/*

 */

/* FreeBSD/NetBSD (and maybe others) use O_FSYNC instead of O_SYNC */
#if !defined(O_SYNC) && defined(O_FSYNC)
#define O_SYNC O_FSYNC
#endif

#endif
/*

   
   ___________________________________
   
                           @(#) $Id: sysdep.html,v 2.110 1997/04/05 00:25:46 frystyk Exp $
                                                                                          
   */
