motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

crypto: introduce new module for computing hash digests

Browse source 
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>
This commit is contained in:
Daniel P. Berrange 2015-07-01 18:10:29 +01:00 • committed by Paolo Bonzini
parent 6b3f7f639e
commit ddbb0d0966
12 changed files with 752 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

60
crypto/init.c Normal file
View file

@ -0,0 +1,60 @@
/*
* 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 */