1 files changed, 0 insertions, 267 deletions
diff --git a/contrib/ipfilter/arc4random.c b/contrib/ipfilter/arc4random.c
deleted file mode 100644
index bdb6b2d9ba9a..000000000000
--- a/contrib/ipfilter/arc4random.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*-
- * THE BEER-WARE LICENSE
- *
- * <dan@FreeBSD.ORG> wrote this file.  As long as you retain this notice you
- * can do whatever you want with this stuff.  If we meet some day, and you
- * think this stuff is worth it, you can buy me a beer in return.
- *
- * Dan Moschuk
- */
-#if !defined(SOLARIS2)
-# include <sys/cdefs.h>
-#endif
-
-#include <sys/types.h>
-#include <sys/param.h>
-#ifdef __FreeBSD__
-# include <sys/kernel.h>
-#endif
-# include <sys/random.h>
-#ifdef __FreeBSD__
-# include <sys/libkern.h>
-#endif
-#include <sys/lock.h>
-# include <sys/mutex.h>
-#include <sys/time.h>
-
-#include <sys/socket.h>
-#include <net/if.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include "netinet/ip_compat.h"
-#ifdef HAS_SYS_MD5_H
-# include <sys/md5.h>
-#else
-# include "md5.h"
-#endif
-
-#ifdef NEED_LOCAL_RAND
-#if !defined(__GNUC__)
-# define __inline
-#endif
-
-#define	ARC4_RESEED_BYTES 65536
-#define	ARC4_RESEED_SECONDS 300
-#define	ARC4_KEYBYTES (256 / 8)
-
-static u_int8_t arc4_i, arc4_j;
-static int arc4_numruns = 0;
-static u_int8_t arc4_sbox[256];
-static time_t arc4_t_reseed;
-static ipfmutex_t arc4_mtx;
-static MD5_CTX md5ctx;
-
-static u_int8_t arc4_randbyte(void);
-static int ipf_read_random(void *dest, int length);
-
-static __inline void
-arc4_swap(u_int8_t *a, u_int8_t *b)
-{
-	u_int8_t c;
-
-	c = *a;
-	*a = *b;
-	*b = c;
-}
-
-/*
- * Stir our S-box.
- */
-static void
-arc4_randomstir (void)
-{
-	u_int8_t key[256];
-	int r, n;
-	struct timeval tv_now;
-
-	/*
-	 * XXX read_random() returns unsafe numbers if the entropy
-	 * device is not loaded -- MarkM.
-	 */
-	r = ipf_read_random(key, ARC4_KEYBYTES);
-	GETKTIME(&tv_now);
-	MUTEX_ENTER(&arc4_mtx);
-	/* If r == 0 || -1, just use what was on the stack. */
-	if (r > 0) {
-		for (n = r; n < sizeof(key); n++)
-			key[n] = key[n % r];
-	}
-
-	for (n = 0; n < 256; n++) {
-		arc4_j = (arc4_j + arc4_sbox[n] + key[n]) % 256;
-		arc4_swap(&arc4_sbox[n], &arc4_sbox[arc4_j]);
-	}
-
-	/* Reset for next reseed cycle. */
-	arc4_t_reseed = tv_now.tv_sec + ARC4_RESEED_SECONDS;
-	arc4_numruns = 0;
-
-	/*
-	 * Throw away the first N words of output, as suggested in the
-	 * paper "Weaknesses in the Key Scheduling Algorithm of RC4"
-	 * by Fluher, Mantin, and Shamir.  (N = 768 in our case.)
-	 */
-	for (n = 0; n < 768*4; n++)
-		arc4_randbyte();
-	MUTEX_EXIT(&arc4_mtx);
-}
-
-/*
- * Initialize our S-box to its beginning defaults.
- */
-static void
-arc4_init(void)
-{
-	int n;
-
-	MD5Init(&md5ctx);
-
-	MUTEX_INIT(&arc4_mtx, "arc4_mtx");
-	arc4_i = arc4_j = 0;
-	for (n = 0; n < 256; n++)
-		arc4_sbox[n] = (u_int8_t) n;
-
-	arc4_t_reseed = 0;
-}
-
-
-/*
- * Generate a random byte.
- */
-static u_int8_t
-arc4_randbyte(void)
-{
-	u_int8_t arc4_t;
-
-	arc4_i = (arc4_i + 1) % 256;
-	arc4_j = (arc4_j + arc4_sbox[arc4_i]) % 256;
-
-	arc4_swap(&arc4_sbox[arc4_i], &arc4_sbox[arc4_j]);
-
-	arc4_t = (arc4_sbox[arc4_i] + arc4_sbox[arc4_j]) % 256;
-	return arc4_sbox[arc4_t];
-}
-
-/*
- * MPSAFE
- */
-void
-arc4rand(void *ptr, u_int len, int reseed)
-{
-	u_int8_t *p;
-	struct timeval tv;
-
-	GETKTIME(&tv);
-	if (reseed ||
-	   (arc4_numruns > ARC4_RESEED_BYTES) ||
-	   (tv.tv_sec > arc4_t_reseed))
-		arc4_randomstir();
-
-	MUTEX_ENTER(&arc4_mtx);
-	arc4_numruns += len;
-	p = ptr;
-	while (len--)
-		*p++ = arc4_randbyte();
-	MUTEX_EXIT(&arc4_mtx);
-}
-
-uint32_t
-ipf_random(void)
-{
-	uint32_t ret;
-
-	arc4rand(&ret, sizeof ret, 0);
-	return ret;
-}
-
-
-static u_char pot[ARC4_RESEED_BYTES];
-static u_char *pothead = pot, *pottail = pot;
-static int inpot = 0;
-
-/*
- * This is not very strong, and this is understood, but the aim isn't to
- * be cryptographically strong - it is just to make up something that is
- * pseudo random.
- */
-void
-ipf_rand_push(void *src, int length)
-{
-	static int arc4_inited = 0;
-	u_char *nsrc;
-	int mylen;
-
-	if (arc4_inited == 0) {
-		arc4_init();
-		arc4_inited = 1;
-	}
-
-	if (length < 64) {
-		MD5Update(&md5ctx, src, length);
-		return;
-	}
-
-	nsrc = src;
-	mylen = length;
-
-#if defined(_SYS_MD5_H) && defined(SOLARIS2)
-# define	buf	buf_un.buf8
-#endif
-	MUTEX_ENTER(&arc4_mtx);
-	while ((mylen > 64)  && (sizeof(pot) - inpot > sizeof(md5ctx.buf))) {
-		MD5Update(&md5ctx, nsrc, 64);
-		mylen -= 64;
-		nsrc += 64;
-		if (pottail + sizeof(md5ctx.buf) > pot + sizeof(pot)) {
-			int left, numbytes;
-
-			numbytes = pot + sizeof(pot) - pottail;
-			bcopy(md5ctx.buf, pottail, numbytes);
-			left = sizeof(md5ctx.buf) - numbytes;
-			pottail = pot;
-			bcopy(md5ctx.buf + sizeof(md5ctx.buf) - left,
-			      pottail, left);
-			pottail += left;
-		} else {
-			bcopy(md5ctx.buf, pottail, sizeof(md5ctx.buf));
-			pottail += sizeof(md5ctx.buf);
-		}
-		inpot += 64;
-	}
-	MUTEX_EXIT(&arc4_mtx);
-#if defined(_SYS_MD5_H) && defined(SOLARIS2)
-# undef buf
-#endif
-}
-
-
-static int
-ipf_read_random(void *dest, int length)
-{
-	if (length > inpot)
-		return 0;
-
-	MUTEX_ENTER(&arc4_mtx);
-	if (pothead + length > pot + sizeof(pot)) {
-		int left, numbytes;
-
-		left = length;
-		numbytes = pot + sizeof(pot) - pothead;
-		bcopy(pothead, dest, numbytes);
-		left -= numbytes;
-		pothead = pot;
-		bcopy(pothead, dest + length - left, left);
-		pothead += left;
-	} else {
-		bcopy(pothead, dest, length);
-		pothead += length;
-	}
-	inpot -= length;
-	if (inpot == 0)
-		pothead = pottail = pot;
-	MUTEX_EXIT(&arc4_mtx);
-
-	return length;
-}
-
-#endif /* NEED_LOCAL_RAND */