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Unified Diff: libsrtp/crypto/replay/ut_sim.c

Issue 3423016: Add current version of libSRTP from CVS. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/
Patch Set: '' Created 10 years, 3 months ago
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Index: libsrtp/crypto/replay/ut_sim.c
===================================================================
--- libsrtp/crypto/replay/ut_sim.c (revision 0)
+++ libsrtp/crypto/replay/ut_sim.c (revision 0)
@@ -0,0 +1,105 @@
+/*
+ * ut_sim.c
+ *
+ * an unreliable transport simulator
+ * (for testing replay databases and suchlike)
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of the Cisco Systems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS 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
+ * COPYRIGHT HOLDERS OR 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.
+ *
+ */
+
+
+#include "ut_sim.h"
+
+
+int
+ut_compar(const void *a, const void *b) {
+ return rand() > (RAND_MAX/2) ? -1 : 1;
+}
+
+void
+ut_init(ut_connection *utc) {
+ int i;
+ utc->index = 0;
+
+ for (i=0; i < UT_BUF; i++)
+ utc->buffer[i] = i;
+
+ qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar);
+
+ utc->index = UT_BUF - 1;
+}
+
+uint32_t
+ut_next_index(ut_connection *utc) {
+ uint32_t tmp;
+
+ tmp = utc->buffer[0];
+ utc->index++;
+ utc->buffer[0] = utc->index;
+
+ qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar);
+
+ return tmp;
+}
+
+
+
+#ifdef UT_TEST
+
+#include <stdio.h>
+
+int
+main() {
+ uint32_t i, irecvd, idiff;
+ ut_connection utc;
+
+ ut_init(&utc);
+
+ for (i=0; i < 1000; i++) {
+ irecvd = ut_next_index(&utc);
+ idiff = i - irecvd;
+ printf("%lu\t%lu\t%d\n", i, irecvd, idiff);
+ }
+
+ return 0;
+}
+
+
+#endif
Property changes on: libsrtp/crypto/replay/ut_sim.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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