Import of old SSLeay release: SSLeay 0.8.1b
diff --git a/e_os.h b/e_os.h
new file mode 100644
index 0000000..2f22805
--- /dev/null
+++ b/e_os.h
@@ -0,0 +1,288 @@
+/* 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
+
+#ifndef DEVRANDOM
+#undef DEVRANDOM /* set this to your 'random' device if you have one */
+#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
+# include <unistd.h>
+# 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()
+
+#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>
+# include <sys/time.h> /* Needed under linux for FD_XXX */
+# include <netinet/in.h>
+# endif
+
+# if defined(NeXT) || defined(_NEXT_SOURCE)
+# include <sys/fcntl.h>
+# include <sys/types.h>
+# endif
+
+# ifdef AIX
+# include <sys/select.h>
+# endif
+
+# if defined(sun)
+# include <sys/filio.h>
+# else
+# 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
+
+#define DG_GCC_BUG /* gcc < 2.6.3 on DGUX */
+
+#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
+
