e_os.h

openssl加密例子

/* e_os.h */
/* Copyright (C) 1995-1998 Eric Young ([e-mail])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([e-mail]).
 * 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 ([e-mail]).
 * 
 * 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 ([e-mail])"
 *    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 ([e-mail])"
 * 
 * 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

#include <openssl/opensslconf.h>

#include <openssl/e_os2.h>
/* <openssl/e_os2.h> contains what we can justify to make visible
 * to the outside; this file e_os.h is not part of the exported
 * interface. */

#ifdef  __cplusplus
extern "C" {
#endif

/* Used to checking reference counts, most while doing perl5 stuff :-) */
#ifdef REF_PRINT
#undef REF_PRINT
#define REF_PRINT(a,b)	fprintf(stderr,"%08X:%4d:%s\n",(int)b,b->references,a)
#endif

#ifndef DEVRANDOM
/* set this to a comma-separated list of 'random' device files to try out.
 * My default, we will try to read at least one of these files */
#define DEVRANDOM "/dev/urandom","/dev/random","/dev/srandom"
#endif
#ifndef DEVRANDOM_EGD
/* set this to a comma-seperated list of 'egd' sockets to try out. These
 * sockets will be tried in the order listed in case accessing the device files
 * listed in DEVRANDOM did not return enough entropy. */
#define DEVRANDOM_EGD "/var/run/egd-pool","/dev/egd-pool","/etc/egd-pool","/etc/entropy"
#endif

#if defined(OPENSSL_SYS_VXWORKS)
#  define NO_SYS_PARAM_H
#  define NO_CHMOD
#  define NO_SYSLOG
#endif
  
#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC)
# if macintosh==1
#  ifndef MAC_OS_GUSI_SOURCE
#    define MAC_OS_pre_X
#    define NO_SYS_TYPES_H
     typedef long ssize_t;
#  endif
#  define NO_SYS_PARAM_H
#  define NO_CHMOD
#  define NO_SYSLOG
#  undef  DEVRANDOM
#  define GETPID_IS_MEANINGLESS
# endif
#endif

/********************************************************************
 The Microsoft section
 ********************************************************************/
/* The following is used becaue of the small stack in some
 * Microsoft operating systems */
#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYSNAME_WIN32)
#  define MS_STATIC	static
#else
#  define MS_STATIC
#endif

#if defined(OPENSSL_SYS_WIN32) && !defined(WIN32)
#  define WIN32
#endif
#if defined(OPENSSL_SYS_WIN16) && !defined(WIN16)
#  define WIN16
#endif
#if defined(OPENSSL_SYS_WINDOWS) && !defined(WINDOWS)
#  define WINDOWS
#endif
#if defined(OPENSSL_SYS_MSDOS) && !defined(MSDOS)
#  define MSDOS
#endif

#if defined(MSDOS) && !defined(GETPID_IS_MEANINGLESS)
#  define GETPID_IS_MEANINGLESS
#endif

#ifdef WIN32
#define get_last_sys_error()	GetLastError()
#define clear_sys_error()	SetLastError(0)
#if !defined(WINNT)
#define WIN_CONSOLE_BUG
#endif
#else
#define get_last_sys_error()	errno
#define clear_sys_error()	errno=0
#endif

#if defined(WINDOWS)
#define get_last_socket_error()	WSAGetLastError()
#define clear_socket_error()	WSASetLastError(0)
#define readsocket(s,b,n)	recv((s),(b),(n),0)
#define writesocket(s,b,n)	send((s),(b),(n),0)
#define EADDRINUSE		WSAEADDRINUSE
#elif defined(__DJGPP__)
#define WATT32
#define get_last_socket_error()	errno
#define clear_socket_error()	errno=0
#define closesocket(s)		close_s(s)
#define readsocket(s,b,n)	read_s(s,b,n)
#define writesocket(s,b,n)	send(s,b,n,0)
#elif defined(MAC_OS_pre_X)
#define get_last_socket_error()	errno
#define clear_socket_error()	errno=0
#define closesocket(s)		MacSocket_close(s)
#define readsocket(s,b,n)	MacSocket_recv((s),(b),(n),true)
#define writesocket(s,b,n)	MacSocket_send((s),(b),(n))
#elif defined(OPENSSL_SYS_VMS)
#define get_last_socket_error() errno
#define clear_socket_error()    errno=0
#define ioctlsocket(a,b,c)      ioctl(a,b,c)
#define closesocket(s)          close(s)
#define readsocket(s,b,n)       recv((s),(b),(n),0)
#define writesocket(s,b,n)      send((s),(b),(n),0)
#elif defined(OPENSSL_SYS_VXWORKS)
#define get_last_socket_error()	errno
#define clear_socket_error()	errno=0
#define ioctlsocket(a,b,c)	    ioctl((a),(b),(int)(c))
#define closesocket(s)		    close(s)
#define readsocket(s,b,n)	    read((s),(b),(n))
#define writesocket(s,b,n)	    write((s),(char *)(b),(n))
#elif defined(OPENSSL_SYS_NETWARE)
#if defined(NETWARE_BSDSOCK)
#define get_last_socket_error() errno
#define clear_socket_error()    errno=0
#define closesocket(s)          close(s)
#define readsocket(s,b,n)       recv((s),(b),(n),0)
#define writesocket(s,b,n)      send((s),(b),(n),0)
#else
#define get_last_socket_error()	WSAGetLastError()
#define clear_socket_error()	WSASetLastError(0)
#define readsocket(s,b,n)		recv((s),(b),(n),0)
#define writesocket(s,b,n)		send((s),(b),(n),0)
#endif
#else
#define get_last_socket_error()	errno
#define clear_socket_error()	errno=0
#define ioctlsocket(a,b,c)	ioctl(a,b,c)
#define closesocket(s)		close(s)
#define readsocket(s,b,n)	read((s),(b),(n))
#define writesocket(s,b,n)	write((s),(b),(n))
#endif

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

#ifdef OPENSSL_NO_STDIO
#  undef OPENSSL_NO_FP_API
#  define OPENSSL_NO_FP_API
#endif

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

#  ifdef __DJGPP__
#    include <unistd.h>
#    include <sys/stat.h>
#    include <sys/socket.h>
#    include <tcp.h>
#    include <netdb.h>
#    define _setmode setmode
#    define _O_TEXT O_TEXT
#    define _O_BINARY O_BINARY
#    undef DEVRANDOM
#    define DEVRANDOM "/dev/urandom\x24"
#  endif /* __DJGPP__ */

#  ifndef S_IFDIR
#    define S_IFDIR	_S_IFDIR
#  endif

#  ifndef S_IFMT
#    define S_IFMT	_S_IFMT
#  endif

#  if !defined(WINNT) && !defined(__DJGPP__)
#    define NO_SYSLOG
#  endif
#  define NO_DIRENT

#  ifdef WINDOWS
#    if !defined(_WIN32_WCE) && !defined(_WIN32_WINNT)
       /*
	* Defining _WIN32_WINNT here in e_os.h implies certain "discipline."
	* Most notably we ought to check for availability of each specific
	* routine with GetProcAddress() and/or quard NT-specific calls with
	* GetVersion() < 0x80000000. One can argue that in latter "or" case
	* we ought to /DELAYLOAD some .DLLs in order to protect ourselves
	* against run-time link errors. This doesn't seem to be necessary,
	* because it turned out that already Windows 95, first non-NT Win32
	* implementation, is equipped with at least NT 3.51 stubs, dummy
	* routines with same name, but which do nothing. Meaning that it's
	* apparently appropriate to guard generic NT calls with GetVersion
	* alone, while NT 4.0 and above calls ought to be additionally
	* checked upon with GetProcAddress.
	*/
#      define _WIN32_WINNT 0x0400
#    endif
#    include <windows.h>
#    include <stddef.h>
#    include <errno.h>
#    include <string.h>
#    ifdef _WIN64
#      define strlen(s) _strlen31(s)
/* cut strings to 2GB */
static unsigned int _strlen31(const char *str)
	{
	unsigned int len=0;
	while (*str && len<0x80000000U) str++, len++;
	return len&0x7FFFFFFF;
	}
#    endif
#    include <malloc.h>
#  endif
#  include <io.h>
#  include <fcntl.h>

#  ifdef OPENSSL_SYS_WINCE
#    include <winsock_extras.h>
#  endif

#  define ssize_t long

#  if defined (__BORLANDC__)
#    define _setmode setmode
#    define _O_TEXT O_TEXT
#    define _O_BINARY O_BINARY
#    define _int64 __int64
#    define _kbhit kbhit
#  endif

#  if defined(WIN16) && defined(SSLEAY) && defined(_WINEXITNOPERSIST)
#    define EXIT(n) _wsetexit(_WINEXITNOPERSIST)
#    define OPENSSL_EXIT(n) do { if (n == 0) EXIT(n); return(n); } while(0)
#  else
#    define EXIT(n) exit(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 OPENSSL_CONF	"openssl.cnf"
#  define SSLEAY_CONF	OPENSSL_CONF
#  define NUL_DEV	"nul"
#  define RFILE		".rnd"
#  ifdef OPENSSL_SYS_WINCE
#    define DEFAULT_HOME  ""
#  else
#    define DEFAULT_HOME  "C:"
#  endif

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

#  ifdef OPENSSL_SYS_VMS
#    define VMS 1
  /* some programs don't include stdlib, so exit() and others give implicit 
     function warnings */
#    include <stdlib.h>
#    if defined(__DECC)
#      include <unistd.h>
#    else