Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/rand/rand_unix.c

Index: openssl/crypto/rand/rand_unix.c
diff --git a/openssl/crypto/rand/rand_unix.c b/openssl/crypto/rand/rand_unix.c
deleted file mode 100644
index e3a65571c8dfcd0b5e6fdd19e82ee48ed80fbbae..0000000000000000000000000000000000000000
--- a/openssl/crypto/rand/rand_unix.c
+++ /dev/null
@@ -1,431 +0,0 @@
-/* crypto/rand/rand_unix.c */
-/* Copyright (C) 1995-1998 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.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
- *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-#include <stdio.h>
-
-#define USE_SOCKETS
-#include "e_os.h"
-#include "cryptlib.h"
-#include <openssl/rand.h>
-#include "rand_lcl.h"
-
-#if !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE))
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/times.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <time.h>
-#if defined(OPENSSL_SYS_LINUX) /* should actually be available virtually everywhere */
-# include <poll.h>
-#endif
-#include <limits.h>
-#ifndef FD_SETSIZE
-# define FD_SETSIZE (8*sizeof(fd_set))
-#endif
-
-#if defined(OPENSSL_SYS_VOS)
-
-/* The following algorithm repeatedly samples the real-time clock
-   (RTC) to generate a sequence of unpredictable data.  The algorithm
-   relies upon the uneven execution speed of the code (due to factors
-   such as cache misses, interrupts, bus activity, and scheduling) and
-   upon the rather large relative difference between the speed of the
-   clock and the rate at which it can be read.
-
-   If this code is ported to an environment where execution speed is
-   more constant or where the RTC ticks at a much slower rate, or the
-   clock can be read with fewer instructions, it is likely that the
-   results would be far more predictable.
-
-   As a precaution, we generate 4 times the minimum required amount of
-   seed data.  */
-
-int RAND_poll(void)
-{
-	short int code;
-	gid_t curr_gid;
-	pid_t curr_pid;
-	uid_t curr_uid;
-	int i, k;
-	struct timespec ts;
-	unsigned char v;
-
-#ifdef OPENSSL_SYS_VOS_HPPA
-	long duration;
-	extern void s$sleep (long *_duration, short int *_code);
-#else
-#ifdef OPENSSL_SYS_VOS_IA32
-	long long duration;
-	extern void s$sleep2 (long long *_duration, short int *_code);
-#else
-#error "Unsupported Platform."
-#endif /* OPENSSL_SYS_VOS_IA32 */
-#endif /* OPENSSL_SYS_VOS_HPPA */
-
-	/* Seed with the gid, pid, and uid, to ensure *some*
-	   variation between different processes.  */
-
-	curr_gid = getgid();
-	RAND_add (&curr_gid, sizeof curr_gid, 1);
-	curr_gid = 0;
-
-	curr_pid = getpid();
-	RAND_add (&curr_pid, sizeof curr_pid, 1);
-	curr_pid = 0;
-
-	curr_uid = getuid();
-	RAND_add (&curr_uid, sizeof curr_uid, 1);
-	curr_uid = 0;
-
-	for (i=0; i<(ENTROPY_NEEDED*4); i++)
-	{
-		/* burn some cpu; hope for interrupts, cache
-		   collisions, bus interference, etc.  */
-		for (k=0; k<99; k++)
-			ts.tv_nsec = random ();
-
-#ifdef OPENSSL_SYS_VOS_HPPA
-		/* sleep for 1/1024 of a second (976 us).  */
-		duration = 1;
-		s$sleep (&duration, &code);
-#else
-#ifdef OPENSSL_SYS_VOS_IA32
-		/* sleep for 1/65536 of a second (15 us).  */
-		duration = 1;
-		s$sleep2 (&duration, &code);
-#endif /* OPENSSL_SYS_VOS_IA32 */
-#endif /* OPENSSL_SYS_VOS_HPPA */
-
-		/* get wall clock time.  */
-		clock_gettime (CLOCK_REALTIME, &ts);
-
-		/* take 8 bits */
-		v = (unsigned char) (ts.tv_nsec % 256);
-		RAND_add (&v, sizeof v, 1);
-		v = 0;
-	}
-	return 1;
-}
-#elif defined __OpenBSD__
-int RAND_poll(void)
-{
-	u_int32_t rnd = 0, i;
-	unsigned char buf[ENTROPY_NEEDED];
-
-	for (i = 0; i < sizeof(buf); i++) {
-		if (i % 4 == 0)
-			rnd = arc4random();
-		buf[i] = rnd;
-		rnd >>= 8;
-	}
-	RAND_add(buf, sizeof(buf), ENTROPY_NEEDED);
-	memset(buf, 0, sizeof(buf));
-
-	return 1;
-}
-#else /* !defined(__OpenBSD__) */
-int RAND_poll(void)
-{
-	unsigned long l;
-	pid_t curr_pid = getpid();
-#if defined(DEVRANDOM) || defined(DEVRANDOM_EGD)
-	unsigned char tmpbuf[ENTROPY_NEEDED];
-	int n = 0;
-#endif
-#ifdef DEVRANDOM
-	static const char *randomfiles[] = { DEVRANDOM };
-	struct stat randomstats[sizeof(randomfiles)/sizeof(randomfiles[0])];
-	int fd;
-	unsigned int i;
-#endif
-#ifdef DEVRANDOM_EGD
-	static const char *egdsockets[] = { DEVRANDOM_EGD, NULL };
-	const char **egdsocket = NULL;
-#endif
-
-#ifdef DEVRANDOM
-	memset(randomstats,0,sizeof(randomstats));
-	/* Use a random entropy pool device. Linux, FreeBSD and OpenBSD
-	 * have this. Use /dev/urandom if you can as /dev/random may block
-	 * if it runs out of random entries.  */
-
-	for (i = 0; (i < sizeof(randomfiles)/sizeof(randomfiles[0])) &&
-			(n < ENTROPY_NEEDED); i++)
-		{
-		if ((fd = open(randomfiles[i], O_RDONLY
-#ifdef O_NONBLOCK
-			|O_NONBLOCK
-#endif
-#ifdef O_BINARY
-			|O_BINARY
-#endif
-#ifdef O_NOCTTY /* If it happens to be a TTY (god forbid), do not make it
-		   our controlling tty */
-			|O_NOCTTY
-#endif
-			)) >= 0)
-			{
-			int usec = 10*1000; /* spend 10ms on each file */
-			int r;
-			unsigned int j;
-			struct stat *st=&randomstats[i];
-
-			/* Avoid using same input... Used to be O_NOFOLLOW
-			 * above, but it's not universally appropriate... */
-			if (fstat(fd,st) != 0)	{ close(fd); continue; }
-			for (j=0;j<i;j++)
-				{
-				if (randomstats[j].st_ino==st->st_ino &&
-				    randomstats[j].st_dev==st->st_dev)
-					break;
-				}
-			if (j<i)		{ close(fd); continue; }
-
-			do
-				{
-				int try_read = 0;
-
-#if defined(OPENSSL_SYS_BEOS_R5)
-				/* select() is broken in BeOS R5, so we simply
-				 *  try to read something and snooze if we couldn't */
-				try_read = 1;
-
-#elif defined(OPENSSL_SYS_LINUX)
-				/* use poll() */
-				struct pollfd pset;
-				
-				pset.fd = fd;
-				pset.events = POLLIN;
-				pset.revents = 0;
-
-				if (poll(&pset, 1, usec / 1000) < 0)
-					usec = 0;
-				else
-					try_read = (pset.revents & POLLIN) != 0;
-
-#else
-				/* use select() */
-				fd_set fset;
-				struct timeval t;
-				
-				t.tv_sec = 0;
-				t.tv_usec = usec;
-
-				if (FD_SETSIZE > 0 && (unsigned)fd >= FD_SETSIZE)
-					{
-					/* can't use select, so just try to read once anyway */
-					try_read = 1;
-					}
-				else
-					{
-					FD_ZERO(&fset);
-					FD_SET(fd, &fset);
-					
-					if (select(fd+1,&fset,NULL,NULL,&t) >= 0)
-						{
-						usec = t.tv_usec;
-						if (FD_ISSET(fd, &fset))
-							try_read = 1;
-						}
-					else
-						usec = 0;
-					}
-#endif
-				
-				if (try_read)
-					{
-					r = read(fd,(unsigned char *)tmpbuf+n, ENTROPY_NEEDED-n);
-					if (r > 0)
-						n += r;
-#if defined(OPENSSL_SYS_BEOS_R5)
-					if (r == 0)
-						snooze(t.tv_usec);
-#endif
-					}
-				else
-					r = -1;
-				
-				/* Some Unixen will update t in select(), some
-				   won't.  For those who won't, or if we
-				   didn't use select() in the first place,
-				   give up here, otherwise, we will do
-				   this once again for the remaining
-				   time. */
-				if (usec == 10*1000)
-					usec = 0;
-				}
-			while ((r > 0 ||
-			       (errno == EINTR || errno == EAGAIN)) && usec != 0 && n < ENTROPY_NEEDED);
-
-			close(fd);
-			}
-		}
-#endif /* defined(DEVRANDOM) */
-
-#ifdef DEVRANDOM_EGD
-	/* Use an EGD socket to read entropy from an EGD or PRNGD entropy
-	 * collecting daemon. */
-
-	for (egdsocket = egdsockets; *egdsocket && n < ENTROPY_NEEDED; egdsocket++)
-		{
-		int r;
-
-		r = RAND_query_egd_bytes(*egdsocket, (unsigned char *)tmpbuf+n,
-					 ENTROPY_NEEDED-n);
-		if (r > 0)
-			n += r;
-		}
-#endif /* defined(DEVRANDOM_EGD) */
-
-#if defined(DEVRANDOM) || defined(DEVRANDOM_EGD)
-	if (n > 0)
-		{
-		RAND_add(tmpbuf,sizeof tmpbuf,(double)n);
-		OPENSSL_cleanse(tmpbuf,n);
-		}
-#endif
-
-	/* put in some default random data, we need more than just this */
-	l=curr_pid;
-	RAND_add(&l,sizeof(l),0.0);
-	l=getuid();
-	RAND_add(&l,sizeof(l),0.0);
-
-	l=time(NULL);
-	RAND_add(&l,sizeof(l),0.0);
-
-#if defined(OPENSSL_SYS_BEOS)
-	{
-	system_info sysInfo;
-	get_system_info(&sysInfo);
-	RAND_add(&sysInfo,sizeof(sysInfo),0);
-	}
-#endif
-
-#if defined(DEVRANDOM) || defined(DEVRANDOM_EGD)
-	return 1;
-#else
-	return 0;
-#endif
-}
-
-#endif /* defined(__OpenBSD__) */
-#endif /* !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)) */
-
-
-#if defined(OPENSSL_SYS_VXWORKS)
-int RAND_poll(void)
-	{
-	return 0;
-	}
-#endif