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-rw-r--r--src/ssl/pqueue/CMakeLists.txt17
-rw-r--r--src/ssl/pqueue/pqueue.c194
-rw-r--r--src/ssl/pqueue/pqueue_test.c117
3 files changed, 328 insertions, 0 deletions
diff --git a/src/ssl/pqueue/CMakeLists.txt b/src/ssl/pqueue/CMakeLists.txt
new file mode 100644
index 0000000..9f14020
--- /dev/null
+++ b/src/ssl/pqueue/CMakeLists.txt
@@ -0,0 +1,17 @@
+include_directories(../../include)
+
+add_library(
+ pqueue
+
+ OBJECT
+
+ pqueue.c
+)
+
+add_executable(
+ pqueue_test
+
+ pqueue_test.c
+)
+
+target_link_libraries(pqueue_test ssl crypto)
diff --git a/src/ssl/pqueue/pqueue.c b/src/ssl/pqueue/pqueue.c
new file mode 100644
index 0000000..ecaa139
--- /dev/null
+++ b/src/ssl/pqueue/pqueue.c
@@ -0,0 +1,194 @@
+/*
+ * 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 <openssl/pqueue.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+
+
+typedef struct _pqueue {
+ pitem *items;
+ unsigned count;
+} pqueue_s;
+
+
+pitem *pitem_new(uint8_t prio64be[8], 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 pqueue_new(void) {
+ pqueue_s *pq = (pqueue_s *)OPENSSL_malloc(sizeof(pqueue_s));
+ if (pq == NULL) {
+ return NULL;
+ }
+
+ memset(pq, 0, sizeof(pqueue_s));
+ return pq;
+}
+
+void pqueue_free(pqueue_s *pq) {
+ if (pq == NULL) {
+ return;
+ }
+
+ OPENSSL_free(pq);
+}
+
+pitem *pqueue_peek(pqueue_s *pq) { return pq->items; }
+
+pitem *pqueue_find(pqueue_s *pq, uint8_t *prio64be) {
+ pitem *curr;
+
+ for (curr = pq->items; curr; curr = curr->next) {
+ if (memcmp(curr->priority, prio64be, sizeof(curr->priority)) == 0) {
+ return curr;
+ }
+ }
+
+ return NULL;
+}
+
+size_t pqueue_size(pqueue_s *pq) {
+ pitem *item = pq->items;
+ size_t count = 0;
+
+ while (item != NULL) {
+ count++;
+ item = item->next;
+ }
+ return count;
+}
+
+piterator pqueue_iterator(pqueue_s *pq) { return pq->items; }
+
+pitem *pqueue_next(piterator *item) {
+ pitem *ret;
+
+ if (item == NULL || *item == NULL) {
+ return NULL;
+ }
+
+ ret = *item;
+ *item = (*item)->next;
+
+ return ret;
+}
+
+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, sizeof(item->priority));
+ 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_pop(pqueue_s *pq) {
+ pitem *item = pq->items;
+
+ if (pq->items != NULL) {
+ pq->items = pq->items->next;
+ }
+
+ return item;
+}
diff --git a/src/ssl/pqueue/pqueue_test.c b/src/ssl/pqueue/pqueue_test.c
new file mode 100644
index 0000000..c4b4b9d
--- /dev/null
+++ b/src/ssl/pqueue/pqueue_test.c
@@ -0,0 +1,117 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/pqueue.h>
+#include <openssl/ssl.h>
+
+
+static int trivial(void) {
+ pqueue q = pqueue_new();
+ if (q == NULL) {
+ return 0;
+ }
+ int32_t data = 0xdeadbeef;
+ uint8_t priority[8] = {0};
+ pitem *item = pitem_new(priority, &data);
+ if (item == NULL ||
+ pqueue_insert(q, item) != item ||
+ pqueue_size(q) != 1 ||
+ pqueue_peek(q) != item ||
+ pqueue_pop(q) != item ||
+ pqueue_size(q) != 0 ||
+ pqueue_pop(q) != NULL) {
+ return 0;
+ }
+ pitem_free(item);
+ pqueue_free(q);
+ return 1;
+}
+
+#define NUM_ITEMS 10
+
+static int fixed_random(void) {
+ /* Random order of 10 elements, chosen by
+ * random.choice(list(itertools.permutations(range(10)))) */
+ int ordering[NUM_ITEMS] = {9, 6, 3, 4, 0, 2, 7, 1, 8, 5};
+ int i;
+ pqueue q = pqueue_new();
+ uint8_t priority[8] = {0};
+ piterator iter;
+ pitem *curr, *item;
+
+ if (q == NULL) {
+ return 0;
+ }
+
+ /* Insert the elements */
+ for (i = 0; i < NUM_ITEMS; i++) {
+ priority[7] = ordering[i];
+ item = pitem_new(priority, &ordering[i]);
+ if (pqueue_insert(q, item) != item) {
+ return 0;
+ }
+ }
+
+ /* Insert the elements again. This inserts duplicates and should
+ * fail. */
+ for (i = 0; i < NUM_ITEMS; i++) {
+ priority[7] = ordering[i];
+ item = pitem_new(priority, &ordering[i]);
+ if (pqueue_insert(q, item) != NULL) {
+ return 0;
+ }
+ pitem_free(item);
+ }
+
+ if (pqueue_size(q) != NUM_ITEMS) {
+ return 0;
+ }
+
+ /* Iterate over the elements. */
+ iter = pqueue_iterator(q);
+ curr = pqueue_next(&iter);
+ if (curr == NULL) {
+ return 0;
+ }
+ while (1) {
+ pitem *next = pqueue_next(&iter);
+ int *curr_data, *next_data;
+
+ if (next == NULL) {
+ break;
+ }
+ curr_data = (int*)curr->data;
+ next_data = (int*)next->data;
+ if (*curr_data >= *next_data) {
+ return 0;
+ }
+ curr = next;
+ }
+ pqueue_free(q);
+ return 1;
+}
+
+int main(void) {
+ SSL_library_init();
+
+ if (!trivial() || !fixed_random()) {
+ return 1;
+ }
+
+ printf("PASS\n");
+ return 0;
+}
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