libvirt/tests/virrandommock.c

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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: John Ferlan <jferlan@redhat.com>
*/
#include <config.h>
#include "internal.h"
#include "virrandom.h"
#include "virmock.h"
#define VIR_FROM_THIS VIR_FROM_NONE
int
virRandomBytes(unsigned char *buf,
size_t buflen)
{
size_t i;
for (i = 0; i < buflen; i++)
buf[i] = i;
return 0;
}
#ifdef WITH_GNUTLS
# include <stdio.h>
# include <gnutls/gnutls.h>
static int (*real_gnutls_dh_params_generate2)(gnutls_dh_params_t dparams,
unsigned int bits);
static gnutls_dh_params_t params_cache;
static unsigned int cachebits;
int
gnutls_dh_params_generate2(gnutls_dh_params_t dparams,
unsigned int bits)
{
int rc = 0;
VIR_MOCK_REAL_INIT(gnutls_dh_params_generate2);
if (!params_cache) {
if (gnutls_dh_params_init(&params_cache) < 0) {
fprintf(stderr, "Error initializing params cache");
abort();
}
rc = real_gnutls_dh_params_generate2(params_cache, bits);
if (rc < 0)
return rc;
cachebits = bits;
}
if (cachebits != bits) {
fprintf(stderr, "Requested bits do not match the cached value");
abort();
}
return gnutls_dh_params_cpy(dparams, params_cache);
}
#endif