Merge branch 'feature/establish-an-upstream-relationship-with-ics-openvpn-codebase-#5381' into develop

7 files changed, 260 insertions, 59 deletions

diff --git a/app/openssl/crypto/rand/md_rand.c b/app/openssl/crypto/rand/md_rand.c
index b2f04ff1..aee1c30b 100644
--- a/app/openssl/crypto/rand/md_rand.c
+++ b/app/openssl/crypto/rand/md_rand.c
@@ -109,6 +109,8 @@
  *
  */
 
+#define OPENSSL_FIPSEVP
+
 #ifdef MD_RAND_DEBUG
 # ifndef NDEBUG
 #   define NDEBUG
@@ -121,10 +123,10 @@
 
 #include "e_os.h"
 
+#include <openssl/crypto.h>
 #include <openssl/rand.h>
 #include "rand_lcl.h"
 
-#include <openssl/crypto.h>
 #include <openssl/err.h>
 
 #ifdef BN_DEBUG
@@ -157,13 +159,14 @@ const char RAND_version[]="RAND" OPENSSL_VERSION_PTEXT;
 static void ssleay_rand_cleanup(void);
 static void ssleay_rand_seed(const void *buf, int num);
 static void ssleay_rand_add(const void *buf, int num, double add_entropy);
-static int ssleay_rand_bytes(unsigned char *buf, int num);
+static int ssleay_rand_bytes(unsigned char *buf, int num, int pseudo);
+static int ssleay_rand_nopseudo_bytes(unsigned char *buf, int num);
 static int ssleay_rand_pseudo_bytes(unsigned char *buf, int num);
 static int ssleay_rand_status(void);
 
 RAND_METHOD rand_ssleay_meth={
 	ssleay_rand_seed,
-	ssleay_rand_bytes,
+	ssleay_rand_nopseudo_bytes,
 	ssleay_rand_cleanup,
 	ssleay_rand_add,
 	ssleay_rand_pseudo_bytes,
@@ -195,6 +198,9 @@ static void ssleay_rand_add(const void *buf, int num, double add)
 	EVP_MD_CTX m;
 	int do_not_lock;
 
+	if (!num)
+		return;
+
 	/*
 	 * (Based on the rand(3) manpage)
 	 *
@@ -328,7 +334,7 @@ static void ssleay_rand_seed(const void *buf, int num)
 	ssleay_rand_add(buf, num, (double)num);
 	}
 
-static int ssleay_rand_bytes(unsigned char *buf, int num)
+static int ssleay_rand_bytes(unsigned char *buf, int num, int pseudo)
 	{
 	static volatile int stirred_pool = 0;
 	int i,j,k,st_num,st_idx;
@@ -377,8 +383,11 @@ static int ssleay_rand_bytes(unsigned char *buf, int num)
 	 * are fed into the hash function and the results are kept in the
 	 * global 'md'.
 	 */
-
-	CRYPTO_w_lock(CRYPTO_LOCK_RAND);
+#ifdef OPENSSL_FIPS
+	/* NB: in FIPS mode we are already under a lock */
+	if (!FIPS_mode())
+#endif
+		CRYPTO_w_lock(CRYPTO_LOCK_RAND);
 
 	/* prevent ssleay_rand_bytes() from trying to obtain the lock again */
 	CRYPTO_w_lock(CRYPTO_LOCK_RAND2);
@@ -457,7 +466,10 @@ static int ssleay_rand_bytes(unsigned char *buf, int num)
 
 	/* before unlocking, we must clear 'crypto_lock_rand' */
 	crypto_lock_rand = 0;
-	CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
+#ifdef OPENSSL_FIPS
+	if (!FIPS_mode())
+#endif
+		CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
 
 	while (num > 0)
 		{
@@ -509,15 +521,23 @@ static int ssleay_rand_bytes(unsigned char *buf, int num)
 	MD_Init(&m);
 	MD_Update(&m,(unsigned char *)&(md_c[0]),sizeof(md_c));
 	MD_Update(&m,local_md,MD_DIGEST_LENGTH);
-	CRYPTO_w_lock(CRYPTO_LOCK_RAND);
+#ifdef OPENSSL_FIPS
+	if (!FIPS_mode())
+#endif
+		CRYPTO_w_lock(CRYPTO_LOCK_RAND);
 	MD_Update(&m,md,MD_DIGEST_LENGTH);
 	MD_Final(&m,md);
-	CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
+#ifdef OPENSSL_FIPS
+	if (!FIPS_mode())
+#endif
+		CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
 
 	EVP_MD_CTX_cleanup(&m);
 	if (ok)
 		return(1);
-	else
+	else if (pseudo)
+		return 0;
+	else 
 		{
 		RANDerr(RAND_F_SSLEAY_RAND_BYTES,RAND_R_PRNG_NOT_SEEDED);
 		ERR_add_error_data(1, "You need to read the OpenSSL FAQ, "
@@ -526,22 +546,16 @@ static int ssleay_rand_bytes(unsigned char *buf, int num)
 		}
 	}
 
+static int ssleay_rand_nopseudo_bytes(unsigned char *buf, int num)
+	{
+	return ssleay_rand_bytes(buf, num, 0);
+	}
+
 /* pseudo-random bytes that are guaranteed to be unique but not
    unpredictable */
 static int ssleay_rand_pseudo_bytes(unsigned char *buf, int num) 
 	{
-	int ret;
-	unsigned long err;
-
-	ret = RAND_bytes(buf, num);
-	if (ret == 0)
-		{
-		err = ERR_peek_error();
-		if (ERR_GET_LIB(err) == ERR_LIB_RAND &&
-		    ERR_GET_REASON(err) == RAND_R_PRNG_NOT_SEEDED)
-			ERR_clear_error();
-		}
-	return (ret);
+	return ssleay_rand_bytes(buf, num, 1);
 	}
 
 static int ssleay_rand_status(void)
diff --git a/app/openssl/crypto/rand/rand.h b/app/openssl/crypto/rand/rand.h
index ac6c0217..bb5520e8 100644
--- a/app/openssl/crypto/rand/rand.h
+++ b/app/openssl/crypto/rand/rand.h
@@ -119,6 +119,11 @@ int RAND_event(UINT, WPARAM, LPARAM);
 
 #endif
 
+#ifdef OPENSSL_FIPS
+void RAND_set_fips_drbg_type(int type, int flags);
+int RAND_init_fips(void);
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
@@ -129,9 +134,14 @@ void ERR_load_RAND_strings(void);
 
 /* Function codes. */
 #define RAND_F_RAND_GET_RAND_METHOD			 101
+#define RAND_F_RAND_INIT_FIPS				 102
 #define RAND_F_SSLEAY_RAND_BYTES			 100
 
 /* Reason codes. */
+#define RAND_R_DUAL_EC_DRBG_DISABLED			 104
+#define RAND_R_ERROR_INITIALISING_DRBG			 102
+#define RAND_R_ERROR_INSTANTIATING_DRBG			 103
+#define RAND_R_NO_FIPS_RANDOM_METHOD_SET		 101
 #define RAND_R_PRNG_NOT_SEEDED				 100
 
 #ifdef  __cplusplus
diff --git a/app/openssl/crypto/rand/rand_err.c b/app/openssl/crypto/rand/rand_err.c
index 03cda4dd..c4c80fc8 100644
--- a/app/openssl/crypto/rand/rand_err.c
+++ b/app/openssl/crypto/rand/rand_err.c
@@ -1,6 +1,6 @@
 /* crypto/rand/rand_err.c */
 /* ====================================================================
- * Copyright (c) 1999-2006 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2011 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
@@ -71,12 +71,17 @@
 static ERR_STRING_DATA RAND_str_functs[]=
 	{
 {ERR_FUNC(RAND_F_RAND_GET_RAND_METHOD),	"RAND_get_rand_method"},
+{ERR_FUNC(RAND_F_RAND_INIT_FIPS),	"RAND_init_fips"},
 {ERR_FUNC(RAND_F_SSLEAY_RAND_BYTES),	"SSLEAY_RAND_BYTES"},
 {0,NULL}
 	};
 
 static ERR_STRING_DATA RAND_str_reasons[]=
 	{
+{ERR_REASON(RAND_R_DUAL_EC_DRBG_DISABLED),"dual ec drbg disabled"},
+{ERR_REASON(RAND_R_ERROR_INITIALISING_DRBG),"error initialising drbg"},
+{ERR_REASON(RAND_R_ERROR_INSTANTIATING_DRBG),"error instantiating drbg"},
+{ERR_REASON(RAND_R_NO_FIPS_RANDOM_METHOD_SET),"no fips random method set"},
 {ERR_REASON(RAND_R_PRNG_NOT_SEEDED)      ,"PRNG not seeded"},
 {0,NULL}
 	};
diff --git a/app/openssl/crypto/rand/rand_lib.c b/app/openssl/crypto/rand/rand_lib.c
index 513e3389..5ac0e14c 100644
--- a/app/openssl/crypto/rand/rand_lib.c
+++ b/app/openssl/crypto/rand/rand_lib.c
@@ -60,10 +60,16 @@
 #include <time.h>
 #include "cryptlib.h"
 #include <openssl/rand.h>
+
 #ifndef OPENSSL_NO_ENGINE
 #include <openssl/engine.h>
 #endif
 
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#include <openssl/fips_rand.h>
+#endif
+
 #ifndef OPENSSL_NO_ENGINE
 /* non-NULL if default_RAND_meth is ENGINE-provided */
 static ENGINE *funct_ref =NULL;
@@ -174,3 +180,127 @@ int RAND_status(void)
 		return meth->status();
 	return 0;
 	}
+
+#ifdef OPENSSL_FIPS
+
+/* FIPS DRBG initialisation code. This sets up the DRBG for use by the
+ * rest of OpenSSL. 
+ */
+
+/* Entropy gatherer: use standard OpenSSL PRNG to seed (this will gather
+ * entropy internally through RAND_poll().
+ */
+
+static size_t drbg_get_entropy(DRBG_CTX *ctx, unsigned char **pout,
+                                int entropy, size_t min_len, size_t max_len)
+        {
+	/* Round up request to multiple of block size */
+	min_len = ((min_len + 19) / 20) * 20;
+	*pout = OPENSSL_malloc(min_len);
+	if (!*pout)
+		return 0;
+	if (RAND_SSLeay()->bytes(*pout, min_len) <= 0)
+		{
+		OPENSSL_free(*pout);
+		*pout = NULL;
+		return 0;
+		}
+        return min_len;
+        }
+
+static void drbg_free_entropy(DRBG_CTX *ctx, unsigned char *out, size_t olen)
+	{
+	if (out)
+		{
+		OPENSSL_cleanse(out, olen);
+		OPENSSL_free(out);
+		}
+	}
+
+/* Set "additional input" when generating random data. This uses the
+ * current PID, a time value and a counter.
+ */
+
+static size_t drbg_get_adin(DRBG_CTX *ctx, unsigned char **pout)
+    	{
+	/* Use of static variables is OK as this happens under a lock */
+	static unsigned char buf[16];
+	static unsigned long counter;
+	FIPS_get_timevec(buf, &counter);
+	*pout = buf;
+	return sizeof(buf);
+	}
+
+/* RAND_add() and RAND_seed() pass through to OpenSSL PRNG so it is 
+ * correctly seeded by RAND_poll().
+ */
+
+static int drbg_rand_add(DRBG_CTX *ctx, const void *in, int inlen,
+				double entropy)
+	{
+	RAND_SSLeay()->add(in, inlen, entropy);
+	return 1;
+	}
+
+static int drbg_rand_seed(DRBG_CTX *ctx, const void *in, int inlen)
+	{
+	RAND_SSLeay()->seed(in, inlen);
+	return 1;
+	}
+
+#ifndef OPENSSL_DRBG_DEFAULT_TYPE
+#define OPENSSL_DRBG_DEFAULT_TYPE	NID_aes_256_ctr
+#endif
+#ifndef OPENSSL_DRBG_DEFAULT_FLAGS
+#define OPENSSL_DRBG_DEFAULT_FLAGS	DRBG_FLAG_CTR_USE_DF
+#endif 
+
+static int fips_drbg_type = OPENSSL_DRBG_DEFAULT_TYPE;
+static int fips_drbg_flags = OPENSSL_DRBG_DEFAULT_FLAGS;
+
+void RAND_set_fips_drbg_type(int type, int flags)
+	{
+	fips_drbg_type = type;
+	fips_drbg_flags = flags;
+	}
+
+int RAND_init_fips(void)
+	{
+	DRBG_CTX *dctx;
+	size_t plen;
+	unsigned char pers[32], *p;
+#ifndef OPENSSL_ALLOW_DUAL_EC_DRBG
+	if (fips_drbg_type >> 16)
+		{
+		RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_DUAL_EC_DRBG_DISABLED);
+		return 0;
+		}
+#endif
+		
+	dctx = FIPS_get_default_drbg();
+        if (FIPS_drbg_init(dctx, fips_drbg_type, fips_drbg_flags) <= 0)
+		{
+		RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INITIALISING_DRBG);
+		return 0;
+		}
+		
+        FIPS_drbg_set_callbacks(dctx,
+				drbg_get_entropy, drbg_free_entropy, 20,
+				drbg_get_entropy, drbg_free_entropy);
+	FIPS_drbg_set_rand_callbacks(dctx, drbg_get_adin, 0,
+					drbg_rand_seed, drbg_rand_add);
+	/* Personalisation string: a string followed by date time vector */
+	strcpy((char *)pers, "OpenSSL DRBG2.0");
+	plen = drbg_get_adin(dctx, &p);
+	memcpy(pers + 16, p, plen);
+
+        if (FIPS_drbg_instantiate(dctx, pers, sizeof(pers)) <= 0)
+		{
+		RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INSTANTIATING_DRBG);
+		return 0;
+		}
+        FIPS_rand_set_method(FIPS_drbg_method());
+	return 1;
+	}
+
+#endif
diff --git a/app/openssl/crypto/rand/rand_unix.c b/app/openssl/crypto/rand/rand_unix.c
index e9ead3a5..e3a65571 100644
--- a/app/openssl/crypto/rand/rand_unix.c
+++ b/app/openssl/crypto/rand/rand_unix.c
@@ -133,47 +133,87 @@
 # define FD_SETSIZE (8*sizeof(fd_set))
 #endif
 
-#ifdef __VOS__
+#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)
 {
-	unsigned char buf[ENTROPY_NEEDED];
+	short int code;
+	gid_t curr_gid;
 	pid_t curr_pid;
 	uid_t curr_uid;
-	static int first=1;
-	int i;
-	long rnd = 0;
+	int i, k;
 	struct timespec ts;
-	unsigned seed;
-
-/* The VOS random() function starts from a static seed so its
-   initial value is predictable.  If random() returns the
-   initial value, reseed it with dynamic data.  The VOS
-   real-time clock has a granularity of 1 nsec so it should be
-   reasonably difficult to predict its exact value.  Do not
-   gratuitously reseed the PRNG because other code in this
-   process or thread may be using it.  */
-
-	if (first) {
-		first = 0;
-		rnd = random ();
-		if (rnd == 1804289383) {
-			clock_gettime (CLOCK_REALTIME, &ts);
-			curr_pid = getpid();
-			curr_uid = getuid();
-			seed = ts.tv_sec ^ ts.tv_nsec ^ curr_pid ^ curr_uid;
-			srandom (seed);
-		}
-	}
+	unsigned char v;
 
-	for (i = 0; i < sizeof(buf); i++) {
-		if (i % 4 == 0)
-			rnd = random();
-		buf[i] = rnd;
-		rnd >>= 8;
-	}
-	RAND_add(buf, sizeof(buf), ENTROPY_NEEDED);
-	memset(buf, 0, sizeof(buf));
+#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__
diff --git a/app/openssl/crypto/rand/rand_win.c b/app/openssl/crypto/rand/rand_win.c
index 5d134e18..34ffcd23 100644
--- a/app/openssl/crypto/rand/rand_win.c
+++ b/app/openssl/crypto/rand/rand_win.c
@@ -750,7 +750,7 @@ static void readscreen(void)
   int		y;		/* y-coordinate of screen lines to grab */
   int		n = 16;		/* number of screen lines to grab at a time */
 
-  if (GetVersion() < 0x80000000 && OPENSSL_isservice()>0)
+  if (check_winnt() && OPENSSL_isservice()>0)
     return;
 
   /* Create a screen DC and a memory DC compatible to screen DC */
diff --git a/app/openssl/crypto/rand/randfile.c b/app/openssl/crypto/rand/randfile.c
index bc7d9c58..7f142807 100644
--- a/app/openssl/crypto/rand/randfile.c
+++ b/app/openssl/crypto/rand/randfile.c
@@ -57,7 +57,9 @@
  */
 
 /* We need to define this to get macros like S_IFBLK and S_IFCHR */
+#if !defined(OPENSSL_SYS_VXWORKS)
 #define _XOPEN_SOURCE 500
+#endif
 
 #include <errno.h>
 #include <stdio.h>
@@ -137,7 +139,7 @@ int RAND_load_file(const char *file, long bytes)
 	in=fopen(file,"rb");
 #endif
 	if (in == NULL) goto err;
-#if defined(S_IFBLK) && defined(S_IFCHR) && !defined(OPNESSL_NO_POSIX_IO)
+#if defined(S_IFBLK) && defined(S_IFCHR) && !defined(OPENSSL_NO_POSIX_IO)
 	if (sb.st_mode & (S_IFBLK | S_IFCHR)) {
 	  /* this file is a device. we don't want read an infinite number
 	   * of bytes from a random device, nor do we want to use buffered