1 files changed, 252 insertions, 0 deletions
diff --git a/openssl/crypto/pqueue/pqueue.c b/openssl/crypto/pqueue/pqueue.c
new file mode 100644
index 00000000..eab13a12
--- /dev/null
+++ b/openssl/crypto/pqueue/pqueue.c
@@ -0,0 +1,252 @@
+/* crypto/pqueue/pqueue.c */
+/* 
+ * 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 "cryptlib.h"
+#include <openssl/bn.h>
+#include "pqueue.h"
+
+typedef struct _pqueue
+	{
+	pitem *items;
+	int count;
+	} pqueue_s;
+
+pitem *
+pitem_new(unsigned char *prio64be, void *data)
+	{
+	pitem *item = (pitem *) OPENSSL_malloc(sizeof(pitem));
+	if (item == NULL) return NULL;
+
+	memcpy(item->priority,prio64be,sizeof(item->priority));
+
+	item->data = data;
+	item->next = NULL;
+
+	return item;
+	}
+
+void
+pitem_free(pitem *item)
+	{
+	if (item == NULL) return;
+
+	OPENSSL_free(item);
+	}
+
+pqueue_s *
+pqueue_new()
+	{
+	pqueue_s *pq = (pqueue_s *) OPENSSL_malloc(sizeof(pqueue_s));
+	if (pq == NULL) return NULL;
+
+	memset(pq, 0x00, sizeof(pqueue_s));
+	return pq;
+	}
+
+void
+pqueue_free(pqueue_s *pq)
+	{
+	if (pq == NULL) return;
+
+	OPENSSL_free(pq);
+	}
+
+pitem *
+pqueue_insert(pqueue_s *pq, pitem *item)
+	{
+	pitem *curr, *next;
+
+	if (pq->items == NULL)
+		{
+		pq->items = item;
+		return item;
+		}
+
+	for(curr = NULL, next = pq->items; 
+		next != NULL;
+		curr = next, next = next->next)
+		{
+		/* we can compare 64-bit value in big-endian encoding
+		 * with memcmp:-) */
+		int cmp = memcmp(next->priority, item->priority,8);
+		if (cmp > 0)		/* next > item */
+			{
+			item->next = next;
+
+			if (curr == NULL) 
+				pq->items = item;
+			else  
+				curr->next = item;
+
+			return item;
+			}
+		
+		else if (cmp == 0)	/* duplicates not allowed */
+			return NULL;
+		}
+
+	item->next = NULL;
+	curr->next = item;
+
+	return item;
+	}
+
+pitem *
+pqueue_peek(pqueue_s *pq)
+	{
+	return pq->items;
+	}
+
+pitem *
+pqueue_pop(pqueue_s *pq)
+	{
+	pitem *item = pq->items;
+
+	if (pq->items != NULL)
+		pq->items = pq->items->next;
+
+	return item;
+	}
+
+pitem *
+pqueue_find(pqueue_s *pq, unsigned char *prio64be)
+	{
+	pitem *next;
+	pitem *found = NULL;
+
+	if ( pq->items == NULL)
+		return NULL;
+
+	for ( next = pq->items; next->next != NULL; next = next->next)
+		{
+		if ( memcmp(next->priority, prio64be,8) == 0)
+			{
+			found = next;
+			break;
+			}
+		}
+	
+	/* check the one last node */
+	if ( memcmp(next->priority, prio64be,8) ==0)
+		found = next;
+
+	if ( ! found)
+		return NULL;
+
+#if 0 /* find works in peek mode */
+	if ( prev == NULL)
+		pq->items = next->next;
+	else
+		prev->next = next->next;
+#endif
+
+	return found;
+	}
+
+void
+pqueue_print(pqueue_s *pq)
+	{
+	pitem *item = pq->items;
+
+	while(item != NULL)
+		{
+		printf("item\t%02x%02x%02x%02x%02x%02x%02x%02x\n",
+			item->priority[0],item->priority[1],
+			item->priority[2],item->priority[3],
+			item->priority[4],item->priority[5],
+			item->priority[6],item->priority[7]);
+		item = item->next;
+		}
+	}
+
+pitem *
+pqueue_iterator(pqueue_s *pq)
+	{
+	return pqueue_peek(pq);
+	}
+
+pitem *
+pqueue_next(pitem **item)
+	{
+	pitem *ret;
+
+	if ( item == NULL || *item == NULL)
+		return NULL;
+
+
+	/* *item != NULL */
+	ret = *item;
+	*item = (*item)->next;
+
+	return ret;
+	}
+
+int
+pqueue_size(pqueue_s *pq)
+{
+	pitem *item = pq->items;
+	int count = 0;
+	
+	while(item != NULL)
+	{
+		count++;
+		item = item->next;
+	}
+	return count;
+}