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3e8703368b
virRandomBits is implemented in terms of virRandomBytes. Although we mock virRandomBytes to give a stable value, this is not sufficient to make virRandomBits give a stable value. The result of virRandomBits will vary depending on endianness. Thus we mock virRandomBits to return a stable value directly. Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Tested-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
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* Copyright (C) 2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: John Ferlan <jferlan@redhat.com>
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*/
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#include <config.h>
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#ifndef WIN32
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# include <stdio.h>
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# include <gnutls/gnutls.h>
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# include "internal.h"
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# include "virstring.h"
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# include "virrandom.h"
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# include "virmock.h"
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# define VIR_FROM_THIS VIR_FROM_NONE
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int
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virRandomBytes(unsigned char *buf,
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size_t buflen)
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{
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size_t i;
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for (i = 0; i < buflen; i++)
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buf[i] = i;
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return 0;
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}
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uint64_t virRandomBits(int nbits)
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{
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/* Chosen by a fair roll of a 2^64 sided dice */
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uint64_t ret = 0x0706050403020100;
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if (nbits < 64)
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ret &= ((1ULL << nbits) - 1);
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return ret;
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}
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int virRandomGenerateWWN(char **wwn,
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const char *virt_type ATTRIBUTE_UNUSED)
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{
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return virAsprintf(wwn, "5100000%09llx",
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(unsigned long long)virRandomBits(36));
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}
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static int (*real_gnutls_dh_params_generate2)(gnutls_dh_params_t dparams,
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unsigned int bits);
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static gnutls_dh_params_t params_cache;
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static unsigned int cachebits;
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int
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gnutls_dh_params_generate2(gnutls_dh_params_t dparams,
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unsigned int bits)
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{
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int rc = 0;
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VIR_MOCK_REAL_INIT(gnutls_dh_params_generate2);
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if (!params_cache) {
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if (gnutls_dh_params_init(¶ms_cache) < 0) {
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fprintf(stderr, "Error initializing params cache");
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abort();
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}
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rc = real_gnutls_dh_params_generate2(params_cache, bits);
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if (rc < 0)
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return rc;
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cachebits = bits;
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}
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if (cachebits != bits) {
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fprintf(stderr, "Requested bits do not match the cached value");
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abort();
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}
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return gnutls_dh_params_cpy(dparams, params_cache);
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}
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#else /* WIN32 */
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/* Can't mock on WIN32 */
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#endif
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