Merge OpenSSL 1.0.1c.

Approved by:	benl (maintainer)

1 files changed, 106 insertions, 5 deletions

diff --git a/crypto/openssl/crypto/rand/rand_unix.c b/crypto/openssl/crypto/rand/rand_unix.c
index 71b98ec..e3a6557 100644
--- a/crypto/openssl/crypto/rand/rand_unix.c
+++ b/crypto/openssl/crypto/rand/rand_unix.c
@@ -133,7 +133,90 @@
 # define FD_SETSIZE (8*sizeof(fd_set))
 #endif
 
-#ifdef __OpenBSD__
+#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;
@@ -163,7 +246,7 @@ int RAND_poll(void)
 	static const char *randomfiles[] = { DEVRANDOM };
 	struct stat randomstats[sizeof(randomfiles)/sizeof(randomfiles[0])];
 	int fd;
-	size_t i;
+	unsigned int i;
 #endif
 #ifdef DEVRANDOM_EGD
 	static const char *egdsockets[] = { DEVRANDOM_EGD, NULL };
@@ -176,7 +259,8 @@ int RAND_poll(void)
 	 * 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++)
+	for (i = 0; (i < sizeof(randomfiles)/sizeof(randomfiles[0])) &&
+			(n < ENTROPY_NEEDED); i++)
 		{
 		if ((fd = open(randomfiles[i], O_RDONLY
 #ifdef O_NONBLOCK
@@ -193,7 +277,7 @@ int RAND_poll(void)
 			{
 			int usec = 10*1000; /* spend 10ms on each file */
 			int r;
-			size_t j;
+			unsigned int j;
 			struct stat *st=&randomstats[i];
 
 			/* Avoid using same input... Used to be O_NOFOLLOW
@@ -211,7 +295,12 @@ int RAND_poll(void)
 				{
 				int try_read = 0;
 
-#if defined(OPENSSL_SYS_LINUX)
+#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;
 				
@@ -258,6 +347,10 @@ int RAND_poll(void)
 					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;
@@ -311,6 +404,14 @@ int RAND_poll(void)
 	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