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programs/test: fix build without MBEDTLS_HAVE_TIME

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Allow programs/test/udp_proxy.c to build when MBEDTLS_HAVE_TIME is
not defined. In this case, do not attempt to seed the pseudo-random
number generator used to sometimes produce corrupt packets and other
erroneous data.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann 2021-11-29 17:28:13 +00:00 committed by Andrzej Kurek
parent 1a021afd7d
commit 0e4a1aa2f1
1 changed files with 5 additions and 1 deletions
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6
programs/test/udp_proxy.c
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@ -34,9 +34,11 @@
#else
#include <stdio.h>
#include <stdlib.h>
#if defined(MBEDTLS_HAVE_TIME)
#include <time.h>
#define mbedtls_time time
#define mbedtls_time_t time_t
#endif
#define mbedtls_printf printf
#define mbedtls_calloc calloc
#define mbedtls_free free
@ -823,6 +825,7 @@ int main( int argc, char *argv[] )
get_options( argc, argv );
#if defined(MBEDTLS_HAVE_TIME)
/*
* Decisions to drop/delay/duplicate packets are pseudo-random: dropping
* exactly 1 in N packets would lead to problems when a flight has exactly
@ -833,11 +836,12 @@ int main( int argc, char *argv[] )
*/
if( opt.seed == 0 )
{
opt.seed = (unsigned int) time( NULL );
opt.seed = (unsigned int) mbedtls_time( NULL );
mbedtls_printf( " . Pseudo-random seed: %u\n", opt.seed );
}
srand( opt.seed );
#endif /* MBEDTLS_HAVE_TIME */
/*
* 0. "Connect" to the server