pqueue and dtls uses 64-bit values. Unfortunately, OpenSSL doesn't

have a uniform representation for those over all architectures, so a
little bit of hackery is needed.

Contributed by nagendra modadugu <nagendra@cs.stanford.edu>

4 files changed, 153 insertions, 12 deletions

diff --git a/crypto/pqueue/Makefile b/crypto/pqueue/Makefile
index 9cdab2b00c..c76eab2b80 100644
--- a/crypto/pqueue/Makefile
+++ b/crypto/pqueue/Makefile
@@ -22,7 +22,7 @@ LIBOBJ=pqueue.o
 
 SRC= $(LIBSRC)
 
-EXHEADER= pqueue.h
+EXHEADER= pqueue.h pq_compat.h
 HEADER=	$(EXHEADER)
 
 ALL=    $(GENERAL) $(SRC) $(HEADER)
diff --git a/crypto/pqueue/pq_compat.h b/crypto/pqueue/pq_compat.h
new file mode 100644
index 0000000000..2157a549da
--- /dev/null
+++ b/crypto/pqueue/pq_compat.h
@@ -0,0 +1,134 @@
+/* crypto/pqueue/pqueue_compat.h */
+/* 
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.  
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 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 "opensslconf.h"
+#include <openssl/bn.h>
+
+/* 
+ * The purpose of this header file is for supporting 64-bit integer
+ * manipulation on 32-bit (and lower) machines.  Currently the only
+ * such environment is VMS.  Other environments that do not natively
+ * support 64-bit integers can safely use the code developed for VMS.
+ *
+ * The only clients of this code are (1) pqueue for priority, and
+ * (2) DTLS, for sequence number manipulation.
+ */
+
+#if defined(OPENSSL_SYS_VMS) || defined(VMS_TEST)
+
+#define PQ_64BIT     BIGNUM
+#define PQ_64BIT_CTX BN_CTX
+
+#define pq_64bit_init(x)           BN_init(x)
+#define pq_64bit_free(x)           BN_free(x)
+
+#define pq_64bit_ctx_new(ctx)      BN_CTX_new()
+#define pq_64bit_ctx_free(x)       BN_CTX_free(x)
+
+#define pq_64bit_assign(x, y)      BN_copy(x, y)
+#define pq_64bit_assign_word(x, y) BN_set_word(x, y)
+#define pq_64bit_gt(x, y)          BN_ucmp(x, y) >= 1 ? 1 : 0
+#define pq_64bit_eq(x, y)          BN_ucmp(x, y) == 0 ? 1 : 0
+#define pq_64bit_add_word(x, w)    BN_add_word(x, w)
+#define pq_64bit_sub(r, x, y)      BN_sub(r, x, y)
+#define pq_64bit_sub_word(x, w)    BN_sub_word(x, w)
+#define pq_64bit_mod(r, x, n, ctx) BN_mod(r, x, n, ctx)
+
+#define pq_64bit_bin2num(bn, bytes, len)   BN_bin2bn(bytes, len, bn)
+#define pq_64bit_num2bin(bn, bytes)        BN_bn2bin(bn, bytes)
+#define pq_64bit_get_word(x)               BN_get_word(x)
+#define pq_64bit_is_bit_set(x, offset)     BN_is_bit_set(x, offset)
+#define pq_64bit_lshift(r, x, shift)       BN_lshift(r, x, shift)
+#define pq_64bit_set_bit(x, num)           BN_set_bit(x, num)
+#define pq_64bit_get_length(x)             BN_num_bits((x))
+
+#else
+
+#if defined(SIXTY_FOUR_BIT) || defined(SIXTY_FOUR_BIT_LONG)
+#define PQ_64BIT BN_ULONG
+#elif defined(THIRTY_TWO_BIT)
+#define PQ_64BIT BN_ULLONG
+#endif
+
+#define PQ_64BIT_CTX      void
+
+#define pq_64bit_init(x)
+#define pq_64bit_free(x)
+#define pq_64bit_ctx_new(ctx)        (ctx)
+#define pq_64bit_ctx_free(x)
+
+#define pq_64bit_assign(x, y)        (*(x) = *(y))
+#define pq_64bit_assign_word(x, y)   (*(x) = y)
+#define pq_64bit_gt(x, y)	         (*(x) > *(y))
+#define pq_64bit_eq(x, y)            (*(x) == *(y))
+#define pq_64bit_add_word(x, w)      (*(x) = (*(x) + (w)))
+#define pq_64bit_sub(r, x, y)        (*(r) = (*(x) - *(y)))
+#define pq_64bit_sub_word(x, w)      (*(x) = (*(x) - (w)))
+#define pq_64bit_mod(r, x, n, ctx)
+
+#define pq_64bit_bin2num(num, bytes, len) bytes_to_long_long(bytes, num)
+#define pq_64bit_num2bin(num, bytes)      long_long_to_bytes(num, bytes)
+#define pq_64bit_get_word(x)              *(x)
+#define pq_64bit_lshift(r, x, shift)      (*(r) = (*(x) << (shift)))
+#define pq_64bit_set_bit(x, num)          do { \
+                                              PQ_64BIT mask = 1; \
+                                              mask = mask << (num); \
+                                              *(x) |= mask; \
+                                          } while(0)
+#endif /* OPENSSL_SYS_VMS */
diff --git a/crypto/pqueue/pqueue.c b/crypto/pqueue/pqueue.c
index f4fa37fe64..6ec5c6756c 100644
--- a/crypto/pqueue/pqueue.c
+++ b/crypto/pqueue/pqueue.c
@@ -68,12 +68,14 @@ typedef struct _pqueue
 	} pqueue_s;
 
 pitem *
-pitem_new(BN_ULLONG priority, void *data)
+pitem_new(PQ_64BIT priority, void *data)
 	{
 	pitem *item = (pitem *) OPENSSL_malloc(sizeof(pitem));
 	if (item == NULL) return NULL;
 
-	item->priority = priority;
+	pq_64bit_init(&(item->priority));
+	pq_64bit_assign(&item->priority, &priority);
+
 	item->data = data;
 	item->next = NULL;
 
@@ -84,7 +86,8 @@ void
 pitem_free(pitem *item)
 	{
 	if (item == NULL) return;
-	
+
+	pq_64bit_free(&(item->priority));
 	OPENSSL_free(item);
 	}
 
@@ -121,7 +124,7 @@ pqueue_insert(pqueue_s *pq, pitem *item)
 		next != NULL;
 		curr = next, next = next->next)
 		{
-		if (item->priority < next->priority)
+		if (pq_64bit_gt(&(next->priority), &(item->priority)))
 			{
 			item->next = next;
 
@@ -133,7 +136,7 @@ pqueue_insert(pqueue_s *pq, pitem *item)
 			return item;
 			}
 		/* duplicates not allowed */
-		if (item->priority == next->priority)
+		if (pq_64bit_eq(&(item->priority), &(next->priority)))
 			return NULL;
 		}
 
@@ -161,7 +164,7 @@ pqueue_pop(pqueue_s *pq)
 	}
 
 pitem *
-pqueue_find(pqueue_s *pq, BN_ULLONG priority)
+pqueue_find(pqueue_s *pq, PQ_64BIT priority)
 	{
 	pitem *next, *prev = NULL;
 	pitem *found = NULL;
@@ -172,7 +175,7 @@ pqueue_find(pqueue_s *pq, BN_ULLONG priority)
 	for ( next = pq->items; next->next != NULL; 
 		  prev = next, next = next->next)
 		{
-		if ( next->priority == priority)
+		if ( pq_64bit_eq(&(next->priority), &priority))
 			{
 			found = next;
 			break;
@@ -180,7 +183,7 @@ pqueue_find(pqueue_s *pq, BN_ULLONG priority)
 		}
 	
 	/* check the one last node */
-	if ( next->priority == priority)
+	if ( pq_64bit_eq(&(next->priority), &priority))
 		found = next;
 
 	if ( ! found)
@@ -196,6 +199,7 @@ pqueue_find(pqueue_s *pq, BN_ULLONG priority)
 	return found;
 	}
 
+#if !(defined(OPENSSL_SYS_VMS) || defined(VMS_TEST))
 void
 pqueue_print(pqueue_s *pq)
 	{
@@ -207,6 +211,7 @@ pqueue_print(pqueue_s *pq)
 		item = item->next;
 		}
 	}
+#endif
 
 pitem *
 pqueue_iterator(pqueue_s *pq)
diff --git a/crypto/pqueue/pqueue.h b/crypto/pqueue/pqueue.h
index 2ac31e21f0..02386d130e 100644
--- a/crypto/pqueue/pqueue.h
+++ b/crypto/pqueue/pqueue.h
@@ -64,18 +64,20 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <openssl/pq_compat.h>
+
 typedef struct _pqueue *pqueue;
 
 typedef struct _pitem
 	{
-	BN_ULLONG priority;
+	PQ_64BIT priority;
 	void *data;
 	struct _pitem *next;
 	} pitem;
 
 typedef struct _pitem *piterator;
 
-pitem *pitem_new(BN_ULLONG priority, void *data);
+pitem *pitem_new(PQ_64BIT priority, void *data);
 void   pitem_free(pitem *item);
 
 pqueue pqueue_new(void);
@@ -84,7 +86,7 @@ void   pqueue_free(pqueue pq);
 pitem *pqueue_insert(pqueue pq, pitem *item);
 pitem *pqueue_peek(pqueue pq);
 pitem *pqueue_pop(pqueue pq);
-pitem *pqueue_find(pqueue pq, BN_ULLONG priority);
+pitem *pqueue_find(pqueue pq, PQ_64BIT priority);
 pitem *pqueue_iterator(pqueue pq);
 pitem *pqueue_next(piterator *iter);