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 |