/*    					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 supportedby libwww. On Unix, it is a question of usingautoconf to figure out what environment we are in. This is done by runningthe configure script which creates a wwwconf.h file. Thisconfiguration include file contains a large set of macro definitions tellingwhat features we have and don't have. On platforms not supported by autoconf(Windows, Mac, VMS etc.) you will find the information normally containedin the wwwconf.h file directly included below. Thesecond part of this file uses all the informationthat we either have from the wwwconf.h file or directly coded and actuallydoes the includes etc.	 	   o 	     Unix  o 	     Microsoft Windows Win32 API  o 	     Macintosh  o 	     Vax VMS	 This module is a part of the  W3C SampleCode 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 changhesthen please add them to the configurescript*/#ifdef HAVE_CONFIG_H#include <wwwconf.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.h>#include <io.h>#include <process.h>#include <winsock.h>#include "windows/config.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	"."#ifndef _CONSOLE#define NO_STDIO#endif#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#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)#define DIR_SEPARATOR#define DIR_SEPARATOR_CHAR	'\\'#define DIR_SEPARATOR_STR	"\\"/*(  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. WSAdefinitions 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#define ECONNRESET      WSAECONNRESET#define ECONNABORTED    WSAECONNABORTED#define ESHUTDOWN       WSAESHUTDOWN/* 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.(  mingw32 - Minimalist GNU for Windows)A bit like Cygwin, except it uses the native Windows API, which meansthe programs do not need the huge Cygwin DLL to run.Patch by Richard Atterer <richard@atterer.net>, October 2001*/#ifdef __MINGW32__#include <winsock2.h>#define WWW_MSWINDOWS/* #define WWW_WIN_CONSOLE */#define WWW_WIN_WINDOW/* #define WWW_WIN_ASYNC *//* #define WWW_WIN_DLL */#ifndef _WINSOCKAPI_#define _WINSOCKAPI_#endif#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	"."#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 :) */#define DIR_SEPARATOR#define DIR_SEPARATOR_CHAR     '\\'#define DIR_SEPARATOR_STR      "\\"#define socerrno WSAGetLastError()#define ERRNO_DONE/* Taken from the WIN32 stuff above. */#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*/#define ECONNRESET      WSAECONNRESET#define ECONNABORTED    WSAECONNABORTED#define ESHUTDOWN       WSAESHUTDOWN/* The configure.in script is wrong to default to #define GETGROUPS_T int */#ifdef GETGROUPS_T#undef GETGROUPS_T#endif#define HT_LSTAT stat#endif /* __MINGW32__ *//*.  Macintosh.We have two environments on Macintosh: Codeworrior and MPV.(  Metrowerks Codewarrior 6)Metrowerks Codewarrior is one development environment on the Mac. We areusing GUSI (1.5.9) by Matthias Neeracher <neeri@iis.ee.ethz.ch> forour socket lib. You can find more information about theGUSI Library fromSwitzerland.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 fileis compatible with sockets package released by NCSA. One major conflict isthat this library redefines write/read/etc as macros. In some of HTML codethese macros get executed when they should not be. Such files should defineNO_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 useDigital'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 DECnetThe last three do not interfere with the unix i/o library, and so they needspecial calls to read, write and close sockets. In these cases the socketnumber is a VMS channel number, so we make the @@@ HORRIBLE @@@ assumptionthat a channel number will be greater than 10 but a unix file descriptor