/*                System dependencies in the W3 library

 * $LynxId: www_tcp.h,v 1.59 2018/05/16 20:31:43 tom Exp $

 *

                                   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.  It should be used in conjunction with HTUtils.h to help

   ensure portability across as many platforms and flavors of platforms

   as possible.

  AUTHORS

  TBL                Tim Berners-Lee, W3 project, CERN, <timbl@info.cern.ch>

  EvA                     Eelco van Asperen <evas@cs.few.eur.nl>

  MA                      Marc Andreessen NCSA

  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

  20 May 94		  A.Harper Add support for VMS CMU TCP/IP transport

   3 Oct 94		  A.Harper Add support for VMS SOCKETSHR/NETLIB

  15 Jul 95               S. Bjorndahl Gnu C for VMS Globaldef/ref support

*/

#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: */

	/* Routine to close a TCP-IP socket         */

#define NETCLOSE close

	/* Routine to read from a TCP-IP socket     */

#define NETREAD(s,p,n) \

	HTDoRead(s, p, (unsigned)(n))

	/* Routine to write to a TCP-IP socket      */

#define NETWRITE(s,p,n)		write(s, p, (size_t)(n))

#define SOCKET_READ(s,b,l)	read(s,b,(size_t)(l))

#define IOCTL(s,cmd,arg)	ioctl(s,(long)(cmd),arg)

#define SOCKET_ERRNO errno	/* normal socket errno */

/* Unless stated otherwise, */

#define SELECT			/* Can handle >1 channel.               */

#define GOT_SYSTEM		/* Can call shell with string           */

#ifdef UNIX

#define GOT_PIPE

#endif /* UNIX */

#define INVSOC (-1)		/* Unix invalid socket */

		/* NB: newer libwww has something different for Windows */

#ifndef VMS

#include <sys/types.h>

#if defined(__BORLANDC__)

#define DECL_ERRNO

#endif

#if defined(__DJGPP__) || defined(__BORLANDC__)

#undef HAVE_DIRENT_H

#define HAVE_DIRENT_H

#undef HAVE_SYS_FILIO_H

#endif /* DJGPP or __BORLANDC__ */

#if defined(_MSC_VER)

#undef HAVE_DIRENT_H

#define HAVE_DIRENT_H

#undef HAVE_SYS_FILIO_H

#endif /* _MSC_VER */

#ifdef HAVE_DIRENT_H

# include <dirent.h>

# define D_NAMLEN(dirent) strlen((dirent)->d_name)

# define STRUCT_DIRENT struct dirent

#else

# define D_NAMLEN(dirent) (dirent)->d_namlen

# define STRUCT_DIRENT struct direct

# ifdef HAVE_SYS_NDIR_H

#  include <sys/ndir.h>

# endif

# ifdef HAVE_SYS_DIR_H

#  include <sys/dir.h>

# endif

# ifdef HAVE_NDIR_H

#  include <ndir.h>

# endif

#endif /* HAVE_DIRENT_H */

#ifdef HAVE_STRUCT_DIRENT64

# undef STRUCT_DIRENT

# define STRUCT_DIRENT struct dirent64

#endif

#if !(defined(DOSPATH) || defined(__EMX__) || defined(__CYGWIN__))

#define STRUCT_DIRENT__D_INO 1

#endif

#endif /* !VMS */

#ifdef TIME_WITH_SYS_TIME

# include <sys/time.h>

# include <time.h>

#else

# ifdef HAVE_SYS_TIME_H

#  include <sys/time.h>

# else

#  include <time.h>

# endif

#endif

#if defined(_AIX) && !defined(AIX)

#define AIX

#endif /* _AIX */

#ifndef __CYGWIN__

#ifdef WIN_EX

#define HAVE_FTIME 1

#define HAVE_SYS_TIMEB_H 1

#endif

#endif /* __CYGWIN__ */

#ifdef HAVE_FCNTL_H

#include <fcntl.h>

#else

#ifdef HAVE_SYS_FCNTL_H

#include <sys/fcntl.h>

#endif

#endif

#ifdef HAVE_STRING_H

#include <string.h>		/* For bzero etc */

#endif /* HAVE_STRING_H */

/*

  MACROS FOR CONVERTING CHARACTERS

 */

#ifndef TOASCII

#ifdef EBCDIC			/* S/390 -- gil -- 1327 */

extern const char un_IBM1047[];

extern const unsigned char IBM1047[];

/* For debugging

#include <assert.h>

#define   TOASCII(c) (assert((c)>=0 && (c)<256), un_IBM1047[c])

*/

/* for production */

#define   TOASCII(c) (un_IBM1047[c])

#define FROMASCII(c) (IBM1047[c])

#else /* EBCDIC */

#if '0' != 48

error Host character set is not ASCII.

#endif

#define TOASCII(c) (c)

#define FROMASCII(c) (c)

#endif				/* EBCDIC */

#endif				/* !TOASCII */

/* convert a char to an unsigned, needed if we have signed characters for ctype.h */

#define UCH(ch) ((unsigned char)(ch))

/*

 * These parameters were provided by Nigel Horne, using BeOS professional 5.0

 */

#ifdef  __BEOS__

#undef NETREAD

#undef NETWRITE

#undef NETCLOSE

#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)

#endif

/*

IBM-PC running Windows NT

	These parameters provided by  Susan C. Weber <sweber@kyle.eitech.com>.

*/

#ifdef _WINDOWS

#ifndef _WINDOWS_NSL

#define _WINDOWS_NSL

#endif

#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

#undef IOCTL

extern int ws_netread(int fd, char *buf, int len);

#define NETREAD(s,b,l)  ws_netread((s),(b),(l))		/* 1997/11/06 (Thu) */

#define NETWRITE(s,b,l) send((s),(b),(l),0)

#define NETCLOSE(s)     closesocket(s)

#define IOCTL(s,cmd,arg)	ioctlsocket(s,cmd,arg)

#include <io.h>

#include <string.h>

#include <process.h>

#include <time.h>

#include <errno.h>

#include <direct.h>

#ifdef ENABLE_IPV6

#undef  USE_WINSOCK2_H

#define USE_WINSOCK2_H

/* Avoid including <winsock*.h> in <windows.h> */

#ifndef WIN32_LEAN_AND_MEAN

#error Define "WIN32_LEAN_AND_MEAN" in your makefile

#endif

#ifdef _WINSOCKAPI_

#error windows.h included before winsock2.h

#endif

#if defined(_MSC_VER) && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0501)

/*

 * Needed to pull in the real getaddrinfo() and not the inline version

 * in <wspiAPI.H> which doesn't support IPv6 (IPv4 only). <wspiAPI.H> is

 * included from <ws2tcpip.h> for <= 0x0500 SDKs.

 */

#undef  _WIN32_WINNT

#define _WIN32_WINNT 0x0501

#endif

#endif /* ENABLE_IPV6 */

#ifdef USE_WINSOCK2_H

#include <winsock2.h>		/* normally included in windows.h */

#ifdef ENABLE_IPV6

#include <ws2tcpip.h>

#endif

#undef EINPROGRESS

#undef EALREADY

#undef EISCONN

#undef EINTR

#undef EAGAIN

#undef ENOTCONN

#undef ECONNRESET

#undef ETIMEDOUT

#define EINPROGRESS  WSAEINPROGRESS

#define EALREADY     WSAEALREADY

#define EISCONN      WSAEISCONN

#define EINTR        WSAEINTR

/* fine EAGAIN       WSAEAGAIN */

#define ENOTCONN     WSAENOTCONN

#define ECONNRESET   WSAECONNRESET

#define ETIMEDOUT    WSAETIMEDOUT

#else /* USE_WINSOCK2_H */

#include <winsock.h>

#if defined(_MSC_VER) || defined(__MINGW32__)

#undef EINTR

#undef EAGAIN

#endif /* _MSC_VER */

#undef EINPROGRESS

#define EINPROGRESS          (WSABASEERR+36)

#undef EALREADY

#define EALREADY             (WSABASEERR+37)

#undef EISCONN

#define EISCONN              (WSABASEERR+56)

#undef EINTR

#define EINTR                (WSABASEERR+4)

#undef EAGAIN

#define EAGAIN               (WSABASEERR+1002)

#undef ENOTCONN

#define ENOTCONN             (WSABASEERR+57)

#undef ECONNRESET

#define ECONNRESET           (WSABASEERR+54)

#undef ETIMEDOUT

#define ETIMEDOUT             WSAETIMEDOUT

#endif /* USE_WINSOCK2_H */

#undef  SOCKET_ERRNO

#define SOCKET_ERRNO          WSAGetLastError()

#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)

  CMU_TCP                 Available via FTP from sacusr.mp.usbr.gov

  SOCKETSHR               Eckhart Meyer's interface to NETLIB

  WIN_TCP                 From Wollongong, now GEC software.

  MULTINET                From SRI, became TGV, then Cisco.

  DECNET                  Cern's TCP socket emulation over DECnet

  TCPIP_SERVICES          TCP/IP Services (newer than UCX)

   WIN_TCP, MULTINET and DECNET 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

#ifdef UCX

#undef IOCTL

#define IOCTL(s,cmd,arg)	HTioctl(s,cmd,arg)

#endif /* UCX */

#ifdef WIN_TCP

#undef SOCKET_READ

#undef NETWRITE

#undef NETCLOSE

#define SOCKET_READ(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))

#undef IOCTL

#define IOCTL(a,b,c) -1		/* disables ioctl function            */

#define NO_IOCTL		/* flag to check if ioctl is disabled */

#endif /* WIN_TCP */

#ifdef CMU_TCP

#undef SOCKET_READ

#undef NETREAD

#undef NETWRITE

#undef NETCLOSE

#define SOCKET_READ(s,b,l) (cmu_get_sdc((s)) != 0 ? cmu_read((s),(b),(l)) : read((s),(b),(l)))

#define NETREAD(s,b,l)     (cmu_get_sdc((s)) != 0 ? HTDoRead((s),(b),(l)) : read((s),(b),(l)))

#define NETWRITE(s,b,l)    (cmu_get_sdc((s)) != 0 ? cmu_write((s),(b),(l)) : write((s),(b),(l)))

#define NETCLOSE(s)        (cmu_get_sdc((s)) != 0 ? cmu_close((s)) : close((s)))

#endif /* CMU_TCP */

#ifdef MULTINET

#undef NETCLOSE

#undef SOCKET_READ

#undef NETWRITE

#undef IOCTL

#undef SOCKET_ERRNO

/*

 *  Delete these socket_foo() prototypes as MultiNet adds them

 *  to it's socket library headers.  Compiler warnings due to

 *  the absence of arguments in the generic prototypes here will

 *  include the names of those which can be deleted. - FM

 */

extern int socket_read();

extern int socket_write();

extern int socket_close();

extern int socket_ioctl();

#define SOCKET_READ(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,cmd,arg)	socket_ioctl(s,cmd,arg)

#define SOCKET_ERRNO socket_errno

#endif /* MULTINET */

#ifdef SOCKETSHR_TCP

#undef SOCKET_READ

#undef NETREAD

#undef NETWRITE

#undef NETCLOSE

#undef IOCTL

#define SOCKET_READ(s,b,l)  (si_get_sdc((s)) != 0 ? si_read((s),(b),(l)) : \

                                read((s),(b),(l)))

#define NETREAD(s,b,l)      (si_get_sdc((s)) != 0 ? HTDoRead((s),(b),(l)) : \

                                read((s),(b),(l)))

#define NETWRITE(s,b,l)     (si_get_sdc((s)) != 0 ? si_write((s),(b),(l)) : \

                                write((s),(b),(l)))

#define NETCLOSE(s)         (si_get_sdc((s)) != 0 ? si_close((s)) : close((s)))

#define IOCTL(s,cmd,arg)	si_ioctl(s,cmd,arg)

#endif /* SOCKETSHR_TCP */

#ifdef TCPIP_SERVICES

/*

 * TCPIP Services has all of the entrypoints including ioctl().

 */

#undef NETWRITE

#define NETWRITE(s,b,l) send((s),(char *)(b),(l),0)

#define TYPE_FD_SET int

#if 0				/* this should be declared via time.h */

typedef TYPE_FD_SET fd_set;

#endif

#endif /* TCPIP_SERVICES */

#include <string.h>

#include <file.h>

#include <stat.h>

#include <unixio.h>

#include <unixlib.h>

#define INCLUDES_DONE

#ifdef MULTINET			/* Include from standard Multinet directories */

/*

 *  Delete any of these multinet_foo() and associated prototypes

 *  as MultiNet adds them to its socket library headers.  You'll

 *  get compiler warnings about them, due the absence of arguments

 *  in the generic prototyping here, and the warnings will include

 *  the names of the functions whose prototype entries can be

 *  deleted here. - FM

 */

extern int multinet_accept();

extern int multinet_bind();

extern int multinet_connect();

extern int multinet_gethostname();

extern int multinet_getsockname();

extern unsigned short multinet_htons(unsigned short __val);

extern unsigned short multinet_ntohs(unsigned short __val);

extern int multinet_listen();

extern int multinet_select();

extern int multinet_socket();

extern char *vms_errno_string();

#ifndef __SOCKET_TYPEDEFS

#define __SOCKET_TYPEDEFS 1

#endif /* !__SOCKET_TYPEDEFS */

#include <time.h>

#include <types.h>

/*

 * DEC C before version 5.2 added some typedefs to <types.h> which happen

 * to be suppressed if the version-4 compatibility define is set.  In

 * particular, lynx uses "off_t".  VAX-C used "unsigned", DEC-C uses "int".

 */

#if defined(_DECC_V4_SOURCE) && !defined(____OFF_T)

#undef off_t

#define off_t int

#endif

#ifdef __TIME_T

#undef  __TYPES

#define __TYPES 1

#define __TYPES_LOADED 1

#endif /* __TIME_T */

#ifdef __SOCKET_TYPEDEFS

#undef __SOCKET_TYPEDEFS

#endif /* __SOCKET_TYPEDEFS */

#include "multinet_root:[multinet.include.sys]types.h"

#ifndef __SOCKET_TYPEDEFS

#define __SOCKET_TYPEDEFS 1

#endif /* !__SOCKET_TYPEDEFS */

#include "multinet_root:[multinet.include]errno.h"

#ifdef __TYPES

#undef  __TIME_T

#define __TIME_T 1

#endif /* __TYPE */

#ifdef __TIME_LOADED

#undef  __TIME

#define __TIME 1		/* to avoid double definitions in in.h */

#endif /* __TIME_LOADED */

#include "multinet_root:[multinet.include.sys]time.h"

#define MULTINET_NO_PROTOTYPES	/* DECC is compatible-but-different */

#include "multinet_root:[multinet.include.sys]socket.h"

#undef MULTINET_NO_PROTOTYPES

#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"

#define TCP_INCLUDES_DONE

/*

 *  Uncomment this if you get compiler messages

 *  about struct timeval having no linkage. - FM

 */

/*#define NO_TIMEVAL*/

#ifdef NO_TIMEVAL

struct timeval {

    long tv_sec;		/* seconds since Jan. 1, 1970 */

    long tv_usec;		/* microseconds */

};

#endif /* NO_TIMEVAL */

#endif /* MULTINET */

#ifdef DECNET

#include <types.h>

#include <errno.h>

#include <time.h>

#include <types.h>		/* for socket.h */

#include <socket.h>

#include <dn>

#include <dnetdb>

/* #include "vms.h" */

#define TCP_INCLUDES_DONE

#endif /* DECNET */

#ifdef UCX

#include <types.h>

#include <errno.h>

#include <time.h>

#include <socket.h>

#include <in.h>

#include <inet.h>

#if defined(TCPWARE) && !defined(__DECC)

#include "tcpware_include:netdb.h"

#include "tcpware_include:ucx$inetdef.h"

#else

#include <netdb.h>

#ifdef MUCX

#include <multinet_root:[multinet.include.vms]ucx$inetdef.h>

#else

#include <ucx$inetdef.h>

#endif /* MUCX */

#endif /* TCPWARE */

#define TCP_INCLUDES_DONE

#endif /* UCX */

#ifdef CMU_TCP

#include <types.h>

#include <errno.h>

#include "cmuip_root:[syslib]time.h"

#include "cmuip_root:[syslib]socket.h"

#include <in.h>

#include <inet.h>

#include <netdb.h>

#include "cmuip_root:[syslib]ioctl.h"

#define TCP_INCLUDES_DONE

#endif /* CMU_TCP */

#ifdef SOCKETSHR_TCP

#include <types.h>

#include <errno.h>

#include <time.h>

#include <socket.h>

#include <in.h>

#include <inet.h>

#include <netdb.h>

#include "socketshr_library:socketshr.h"

#include "socketshr_library:ioctl.h"

#define TCP_INCLUDES_DONE

#endif /* SOCKETSHR_TCP */

#ifdef TCPIP_SERVICES

#include <types.h>

#include <errno.h>

#include <time.h>

#include <ioctl.h>

#include <socket.h>

#include <in.h>

#include <inet.h>

#include <netdb.h>

#define TCP_INCLUDES_DONE

#endif /* TCPIP_SERVICES */

#ifdef WIN_TCP

#include <types.h>

#include <errno.h>

#include <time.h>

#include <socket.h>

#include <in.h>

#include <inet.h>

#include <netdb.h>

#ifndef NO_IOCTL

#include <ioctl.h>

#endif /* !NO_IOCTL */

#define TCP_INCLUDES_DONE

#endif /* WIN_TCP */

#ifndef TCP_INCLUDES_DONE

#include <types.h>

#include <errno.h>

#include <time.h>

#ifdef VMS_SOCKET_HEADERS

/*

 *  Not all versions of VMS have the full set of headers

 *  for socket library functions, because the TCP/IP

 *  packages were layered products.  If we want these

 *  specifically, instead of those for the above packages,

 *  the module should be compiled with VMS_SOCKET_HEADERS

 *  defined instead of layered product definitions, above.

 *  If the module is not using socket library functions,

 *  none of the definitions need be used, and we include

 *  only the above three headers. - FM

 */

#include <socket.h>

#include <in.h>

#include <inet.h>

#include <netdb.h>

#include <ioctl.h>

#endif /* VMS_SOCKET_HEADERS */

#define TCP_INCLUDES_DONE

#endif /* !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)

 */

#if defined(VAXC) && !defined(__DECC)

#define GLOBALDEF globaldef

#define GLOBALREF globalref

#else

#ifdef __GNUC__			/* this added by Sterling Bjorndahl */

#define GLOBALREF_IS_MACRO 1

#define GLOBALDEF_IS_MACRO 1

#include <gnu_hacks.h>		/* defines GLOBALREF and GLOBALDEF for GNUC on VMS */

#endif /* __GNUC__ */

#endif /* VAXC && !DECC */

#include <perror.h>

#ifndef errno

extern int errno;

#endif /* !errno */

#endif /* VMS */

/*

 * On non-VMS machines and for DECC on VMS, the GLOBALDEF and GLOBALREF

 * storage types default to normal C storage types.

 */

#ifndef GLOBALREF

#define GLOBALDEF

#define GLOBALREF extern

#endif /* !GLOBALREF */

#ifdef __DJGPP__

#undef SELECT

#define TCP_INCLUDES_DONE

#undef  IOCTL

#define IOCTL(s,cmd,arg)	ioctlsocket(s,cmd,(char*)(arg))

#define DECL_ERRNO

#include <errno.h>

#include <sys/types.h>

#include <io.h>

#include <sys/ioctl.h>

#include <sys/socket.h>

#include <arpa/inet.h>

#include <tcp.h>

#ifdef word

#undef word

#endif /* word */

#ifdef set_timeout

#undef set_timeout

#endif /* set_timeout */

#define select select_s

#undef NETWRITE

#define NETWRITE write_s

#undef NETREAD

#define NETREAD read_s

#undef NETCLOSE

#define NETCLOSE close_s

#ifdef UNIX

#undef UNIX

#endif /* UNIX */

#ifdef HAVE_GETTEXT

#define gettext gettext__

#endif

#if !defined(NCURSES) && !defined(USE_SLANG)

#define HAVE_CBREAK 1

#endif /* !NCURSES && !USE_SLANG */

#if defined(USE_SLANG) && !defined(NO_DJ_KEYHANDLER) && defined(HAVE_CONFIG_H)

#define DJGPP_KEYHANDLER

#endif /* USE_SLANG && !NO_DJ_KEYHANDLER  && HAVE_CONFIG_H */

#endif /* DJGPP */

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif /* HAVE_UNISTD_H */

#ifdef HAVE_SYS_FILIO_H

#include <sys/filio.h>

#endif /* HAVE_SYS_FILIO_H */

#if !defined(HAVE_LSTAT) && !defined(lstat)

#define lstat(path,block) stat(path,block)

#endif

#if defined(DECL_ERRNO) && !defined(errno)

extern int errno;

#endif /* DECL_ERRNO */

/*

Regular BSD unix versions

=========================

   These are a default unix where not already defined specifically.

 */

#ifndef INCLUDES_DONE

#include <sys/types.h>

#ifdef HAVE_STRING_H

#include <string.h>

#endif /* HAVE_STRING_H */

#include <errno.h>		/* independent */

#ifdef __MVS__			/* S/390 -- gil -- 1361 */

#include <time.h>

#endif /* __MVS__ */

#ifdef SCO

#include <sys/timeb.h>

#include <time.h>

#endif /* SCO */

#if defined(AIX) || defined(SVR4)

#include <time.h>

#endif /* AIX || SVR4 */

#include <sys/time.h>		/* independent */

#include <sys/stat.h>

#ifndef __MVS__			/* S/390 -- gil -- 1373 */

#include <sys/param.h>

#endif /* __MVS__ */

#include <sys/file.h>		/* For open() etc */

#if defined(NeXT) || defined(sony_news)

#ifndef mode_t

typedef unsigned short mode_t;

#endif /* !mode_t */

#endif /* NeXT || sony_news */

#define INCLUDES_DONE

#endif /* Normal includes */

/* FIXME: this should be autoconf'd */

/* Interactive UNIX for i386 and i486 -- Thanks to jeffrey@itm.itm.org */

#ifdef ISC

#include <net/errno.h>

#include <sys/types.h>

#include <sys/tty.h>

#include <sys/sioctl.h>

#include <sys/bsdtypes.h>

#ifndef MERGE

#define MERGE

#include <sys/pty.h>

#undef MERGE

#else

#include <sys/pty.h>

#endif /* !MERGE */

#ifndef USE_DIRENT

#define USE_DIRENT		/* sys V style directory open */

#endif /* USE_DIRENT */

#include <sys/dirent.h>

#endif /* ISC */

/*	Directory reading stuff - BSD or SYS V

*/

#ifdef HAVE_CONFIG_H

# ifdef HAVE_LIMITS_H

#  include <limits.h>

# endif	/* HAVE_LIMITS_H */

# if !defined(MAXINT) && defined(INT_MAX)

#  define MAXINT INT_MAX

# endif	/* !MAXINT && INT_MAX */

#else

#if !(defined(VM) || defined(VMS) || defined(THINK_C) || defined(PCNFS) || defined(_WINDOWS))

#define DECL_SYS_ERRLIST 1

#endif

#if defined(VMS)

#define socklen_t unsigned

#else

#define socklen_t int		/* used for default LY_SOCKLEN definition */

#endif

#endif /* !HAVE_CONFIG_H */

#ifdef HAVE_LIBINTL_H

#include <libintl.h>

#endif

#ifdef HAVE_LIBGETTEXT_H

#include <libgettext.h>

#endif

#define N_(s) s

#ifndef HAVE_GETTEXT

#define gettext(s) s

#endif

#ifndef NLS_TEXTDOMAIN

#define NLS_TEXTDOMAIN "lynx"

#endif

/*

Defaults

========

  INCLUDE FILES FOR TCP

 */

#ifndef TCP_INCLUDES_DONE

#ifndef NO_IOCTL

#include <sys/ioctl.h>		/* EJB */

#endif /* !NO_IOCTL */

#include <sys/socket.h>

#include <netinet/in.h>

#ifdef HAVE_ARPA_INET_H

#include <arpa/inet.h>		/* Must be after netinet/in.h */

#endif

#include <netdb.h>

#endif /* TCP includes */

typedef unsigned short PortNumber;

#ifndef S_ISLNK

#define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)

#endif /* S_ISLNK */

#ifndef S_ISDIR

#define S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)

#endif /* S_ISDIR */

#ifndef S_ISREG

#define S_ISREG(m)	(((m) & S_IFMT) == S_IFREG)

#endif /* S_ISREG */

#ifndef S_ISUID

#define S_ISUID  0004000

#endif

#ifndef S_ISGID

#define S_ISGID  0002000

#endif

#ifndef S_ISVTX

#define S_ISVTX  0001000

#endif

#ifndef S_IRWXU

#define S_IRWXU 00700

#endif

#ifndef S_IRUSR

#define S_IRUSR 00400

#endif

#ifndef S_IWUSR

#define S_IWUSR 00200

#endif

#ifndef S_IXUSR

#define S_IXUSR 00100

#endif

#ifndef S_IRWXG