/* e_os.h */
/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#ifndef HEADER_E_OS_H
#define HEADER_E_OS_H

#ifdef  __cplusplus
extern "C" {
#endif

/* Nothing assumes opening this will succeed, so #defining it anyway is
 * safe. */
#if !defined(DEVRANDOM) || !DEVRANDOM
#define DEVRANDOM "/dev/urandom"
#endif

#if defined(NOCONST)
#define const
#endif

/********************************************************************
 The Microsoft section
 ********************************************************************/
/* The following is used becaue of the small stack in some
 * Microsoft operating systems */
#if defined(WIN16) || defined(MSDOS)
#  define MS_STATIC	static
#else
#  define MS_STATIC
#endif

#if defined(WIN32) || defined(WIN16)
#  ifndef WINDOWS
#    define WINDOWS
#  endif
#  ifndef MSDOS
#    define MSDOS
#  endif
#endif

#ifdef WIN16
#  define MS_CALLBACK	_far _loadds
#  define MS_FAR	_far
#else
#  define MS_CALLBACK
#  define MS_FAR
#endif

#if defined(WINDOWS) || defined(MSDOS)

#ifndef S_IFDIR
#define S_IFDIR	_S_IFDIR
#endif

#ifndef S_IFMT
#define S_IFMT	_S_IFMT
#endif

#define strncasecmp(a,b,c)	strnicmp((a),(b),(c))

#  ifdef WINDOWS
#    include <windows.h>
#    include <stddef.h>
#    include <errno.h>
#    include <string.h>
#    include <malloc.h>
#  endif
#  include <io.h>
#  include <fcntl.h>

#if defined(WIN16) && (!defined(MONOLITH) || defined(SSLEAY)) && defined(_WINEXITNOPERSIST)
#  define EXIT(n)		{ if (n == 0) _wsetexit(_WINEXITNOPERSIST); \
				return(n); }
#else
#  define EXIT(n)		return(n);
#endif
#  define LIST_SEPARATOR_CHAR ';'
#ifndef X_OK
#  define X_OK	0
#endif
#ifndef W_OK
#  define W_OK	2
#endif
#ifndef R_OK
#  define R_OK	4
#endif
#  define SSLEAY_CONF	"ssleay.cnf"
#  define NUL_DEV		"nul"
#  define RFILE		".rnd"

#else /* The non-microsoft world world */

#  ifdef VMS
#    include <unixlib.h>
#  else
#ifdef HAVE_UNISTD_H
#    include <unistd.h>
#endif
#  endif

#  define SSLEAY_CONF	"ssleay.cnf"
#  define RFILE		".rnd"
#  define LIST_SEPARATOR_CHAR ':'
#  ifndef MONOLITH
#    define EXIT(n)		exit(n); return(n)
#  else
#    define EXIT(n)		return(n)
#  endif
#  define NUL_DEV		"/dev/null"

#  define SSLeay_getpid()	getpid()

#ifdef WORDS_BIGENDIAN
#define B_ENDIAN
#else
#define L_ENDIAN
#endif

#endif

/*************/

#ifdef USE_SOCKETS
#  if defined(WINDOWS) || defined(MSDOS)
      /* windows world */

#    ifdef NO_SOCK
#      define SSLeay_Write(a,b,c)	(-1)
#      define SSLeay_Read(a,b,c)	(-1)
#      define SHUTDOWN(fd)		close(fd)
#      define SHUTDOWN2(fd)		close(fd)
#    else
#      include <winsock.h>
extern HINSTANCE _hInstance;
#      define SSLeay_Write(a,b,c)	send((a),(b),(c),0)
#      define SSLeay_Read(a,b,c)	recv((a),(b),(c),0)
#      define SHUTDOWN(fd)		{ shutdown((fd),0); closesocket(fd); }
#      define SHUTDOWN2(fd)		{ shutdown((fd),2); closesocket(fd); }
#    endif


#  else

#    ifndef VMS
      /* unix world */
#      include <netdb.h>
#      include <sys/types.h>
#      include <sys/socket.h>
#      include <sys/param.h>
#      if defined(HAVE_SYS_TIME_H) && !defined(DONT_INCLUDE_SYS_TIME_H)
#        include <sys/time.h> /* Needed under linux for FD_XXX */
#        ifndef TIME_WITH_SYS_TIME
#          define DONT_INCLUDE_TIME_H
#        endif
#      endif
#      include <netinet/in.h>
#    endif

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

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

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

#    ifdef VMS
#      include <unixio.h>
#    endif

#    define SSLeay_Read(a,b,c)     read((a),(b),(c))
#    define SSLeay_Write(a,b,c)    write((a),(b),(c))
#    define SHUTDOWN(fd)    { shutdown((fd),0); close((fd)); }
#    define SHUTDOWN2(fd)   { shutdown((fd),2); close((fd)); }
#    define INVALID_SOCKET	-1
#  endif
#endif

#if defined(THREADS) || defined(sun)
#ifndef _REENTRANT
#define _REENTRANT
#endif
#endif

/***********************************************/

#ifndef NOPROTO
#define P_CC_CC	const void *,const void *
#define P_I_I		int,int 
#define P_I_I_P_I	int,int,char *,int
#define P_IP_I_I_P_I	int *,int,int,char *,int
#define P_V		void 
#else
#define P_CC_CC
#define P_I_I
#define P_IP_I_I_P_I
#define P_I_I_P_I
#define P_V
#endif

/* not used yet */
#define	CS_BEGIN
#define CS_END

/* do we need to do this for getenv.
 * Just define getenv for use under windows */

#ifdef WIN16
/* How to do this needs to be thought out a bit more.... */
/*char *GETENV(char *);
#define Getenv	GETENV*/
#define Getenv	getenv
#else
#define Getenv getenv
#endif

#if defined(__dgux__) && defined(__GNUC__) && (__GNUC__ <= 2) \
    && ((__GNUC__ < 2) || (__GNUC_MINOR <= 6))
#define DG_GCC_BUG	/* gcc < 2.6.3 on DGUX */
#endif

#ifdef sgi
#define IRIX_CC_BUG	/* all version of IRIX I've tested (4.* 5.*) */
#endif

#ifdef NO_MD2
#define MD2_Init MD2Init
#define MD2_Update MD2Update
#define MD2_Final MD2Final
#define MD2_DIGEST_LENGTH 16
#endif
#ifdef NO_MD5
#define MD5_Init MD5Init 
#define MD5_Update MD5Update
#define MD5_Final MD5Final
#define MD5_DIGEST_LENGTH 16
#endif

#ifdef  __cplusplus
}
#endif

#endif

