ddbb0d0966
Introduce a new crypto/ directory that will (eventually) contain all the cryptographic related code. This initially defines a wrapper for initializing gnutls and for computing hashes with gnutls. The former ensures that gnutls is guaranteed to be initialized exactly once in QEMU regardless of CLI args. The block quorum code currently fails to initialize gnutls so it only works by luck, if VNC server TLS is not requested. The hash APIs avoids the need to litter the rest of the code with preprocessor checks and simplifies callers by allocating the correct amount of memory for the requested hash. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1435770638-25715-2-git-send-email-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
|
|
* QEMU Crypto initialization
|
|
*
|
|
* Copyright (c) 2015 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 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/>.
|
|
*
|
|
*/
|
|
|
|
#include "crypto/init.h"
|
|
|
|
#ifdef CONFIG_GNUTLS
|
|
#include <gnutls/gnutls.h>
|
|
#include <gnutls/crypto.h>
|
|
|
|
/* #define DEBUG_GNUTLS */
|
|
|
|
#ifdef DEBUG_GNUTLS
|
|
static void qcrypto_gnutls_log(int level, const char *str)
|
|
{
|
|
fprintf(stderr, "%d: %s", level, str);
|
|
}
|
|
#endif
|
|
|
|
int qcrypto_init(Error **errp)
|
|
{
|
|
int ret;
|
|
ret = gnutls_global_init();
|
|
if (ret < 0) {
|
|
error_setg(errp,
|
|
"Unable to initialize GNUTLS library: %s",
|
|
gnutls_strerror(ret));
|
|
return -1;
|
|
}
|
|
#ifdef DEBUG_GNUTLS
|
|
gnutls_global_set_log_level(10);
|
|
gnutls_global_set_log_function(qcrypto_gnutls_log);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#else /* ! CONFIG_GNUTLS */
|
|
|
|
int qcrypto_init(Error **errp G_GNUC_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* ! CONFIG_GNUTLS */
|