/* * roc_driver.c * * test driver for rollover counter replay implementation * * David A. McGrew * Cisco Systems, Inc.
*/
/* * * Copyright (c) 2001-2017, 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. *
*/
#ifdef HAVE_CONFIG_H #include <config.h> #endif
#include <stdio.h>
/* * defining ROC_TEST causes small datatypes to be used in * srtp_xtd_seq_num_t - this allows the functions to be exhaustively tested.
*/ #if ROC_NEEDS_TO_BE_TESTED #define ROC_TEST #endif
#include"rdbx.h" #include"ut_sim.h"
srtp_err_status_t roc_test(int num_trials);
int main(void)
{
srtp_err_status_t status;
printf("rollover counter test driver\n" "David A. McGrew\n" "Cisco Systems, Inc.\n");
printf("testing index functions...");
status = roc_test(1 << 18); if (status) {
printf("failed\n"); exit(status);
}
printf("passed\n"); return 0;
}
#define ROC_VERBOSE 0
srtp_err_status_t roc_test(int num_trials)
{
srtp_xtd_seq_num_t local, est, ref;
ut_connection utc; int i, num_bad_est = 0; int delta;
uint32_t ircvd; double failure_rate;
for (i = 0; i < num_trials; i++) { /* get next seq num from unreliable transport simulator */
ircvd = ut_next_index(&utc);
/* set ref to value of ircvd */
ref = ircvd;
/* estimate index based on low bits of ircvd */
delta = srtp_index_guess(&local, &est, (uint16_t)ref); #if ROC_VERBOSE
printf("ref: %lld, local: %lld, est: %lld, ircvd: %d, delta: %d\n", ref,
local, est, ircvd, delta); #endif
if (local + delta != est) {
printf(" *bad delta*: local %llu + delta %d != est %llu\n",
(unsignedlonglong)local, delta, (unsignedlonglong)est); return srtp_err_status_algo_fail;
}
/* now update local srtp_xtd_seq_num_t as necessary */ if (delta > 0)
srtp_index_advance(&local, delta);
if (ref != est) { #if ROC_VERBOSE
printf(" *bad estimate*\n"); #endif /* record failure event */
++num_bad_est;
/* reset local value to correct value */
local = ref;
}
}
failure_rate = (double)num_bad_est / num_trials; if (failure_rate > 0.01) {
printf("error: failure rate too high (%d bad estimates in %d trials)\n",
num_bad_est, num_trials); return srtp_err_status_algo_fail;
}
printf("done\n");
return srtp_err_status_ok;
}
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