crypto: introduce new module for TLS anonymous credentials
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-03-13 18:39:26 +01:00
|
|
|
/*
|
|
|
|
* QEMU crypto TLS anonymous credential support
|
|
|
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*
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* Copyright (c) 2015 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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2019-02-13 16:54:59 +01:00
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* version 2.1 of the License, or (at your option) any later version.
|
crypto: introduce new module for TLS anonymous credentials
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-03-13 18:39:26 +01:00
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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 <http://www.gnu.org/licenses/>.
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*
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*/
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2016-01-26 19:16:55 +01:00
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#include "qemu/osdep.h"
|
crypto: introduce new module for TLS anonymous credentials
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-03-13 18:39:26 +01:00
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#include "crypto/tlscredsanon.h"
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2018-05-03 21:50:23 +02:00
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#include "tlscredspriv.h"
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include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-14 09:01:28 +01:00
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#include "qapi/error.h"
|
2019-05-23 16:35:07 +02:00
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#include "qemu/module.h"
|
crypto: introduce new module for TLS anonymous credentials
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-03-13 18:39:26 +01:00
|
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#include "qom/object_interfaces.h"
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#include "trace.h"
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#ifdef CONFIG_GNUTLS
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static int
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qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds,
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Error **errp)
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{
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char *dhparams = NULL;
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int ret;
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int rv = -1;
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trace_qcrypto_tls_creds_anon_load(creds,
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creds->parent_obj.dir ? creds->parent_obj.dir : "<nodir>");
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if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
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if (qcrypto_tls_creds_get_path(&creds->parent_obj,
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QCRYPTO_TLS_CREDS_DH_PARAMS,
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false, &dhparams, errp) < 0) {
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goto cleanup;
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}
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ret = gnutls_anon_allocate_server_credentials(&creds->data.server);
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if (ret < 0) {
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error_setg(errp, "Cannot allocate credentials: %s",
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gnutls_strerror(ret));
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goto cleanup;
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}
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if (qcrypto_tls_creds_get_dh_params_file(&creds->parent_obj, dhparams,
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&creds->parent_obj.dh_params,
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errp) < 0) {
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goto cleanup;
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}
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gnutls_anon_set_server_dh_params(creds->data.server,
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creds->parent_obj.dh_params);
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} else {
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ret = gnutls_anon_allocate_client_credentials(&creds->data.client);
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if (ret < 0) {
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error_setg(errp, "Cannot allocate credentials: %s",
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gnutls_strerror(ret));
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goto cleanup;
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}
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}
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rv = 0;
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cleanup:
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g_free(dhparams);
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return rv;
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}
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static void
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qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds)
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{
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if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
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if (creds->data.client) {
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gnutls_anon_free_client_credentials(creds->data.client);
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creds->data.client = NULL;
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}
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} else {
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if (creds->data.server) {
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gnutls_anon_free_server_credentials(creds->data.server);
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creds->data.server = NULL;
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}
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}
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if (creds->parent_obj.dh_params) {
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gnutls_dh_params_deinit(creds->parent_obj.dh_params);
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creds->parent_obj.dh_params = NULL;
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}
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}
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#else /* ! CONFIG_GNUTLS */
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static void
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qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED,
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Error **errp)
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{
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error_setg(errp, "TLS credentials support requires GNUTLS");
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}
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static void
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qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED)
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{
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/* nada */
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}
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#endif /* ! CONFIG_GNUTLS */
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static void
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qcrypto_tls_creds_anon_prop_set_loaded(Object *obj,
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bool value,
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Error **errp)
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{
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QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
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if (value) {
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qcrypto_tls_creds_anon_load(creds, errp);
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} else {
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qcrypto_tls_creds_anon_unload(creds);
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}
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|
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}
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#ifdef CONFIG_GNUTLS
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static bool
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qcrypto_tls_creds_anon_prop_get_loaded(Object *obj,
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Error **errp G_GNUC_UNUSED)
|
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{
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QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
|
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|
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if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
|
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return creds->data.server != NULL;
|
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} else {
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return creds->data.client != NULL;
|
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}
|
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}
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#else /* ! CONFIG_GNUTLS */
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static bool
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qcrypto_tls_creds_anon_prop_get_loaded(Object *obj G_GNUC_UNUSED,
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Error **errp G_GNUC_UNUSED)
|
|
|
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{
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|
return false;
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|
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|
}
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#endif /* ! CONFIG_GNUTLS */
|
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static void
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qcrypto_tls_creds_anon_complete(UserCreatable *uc, Error **errp)
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|
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{
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object_property_set_bool(OBJECT(uc), true, "loaded", errp);
|
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}
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static void
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qcrypto_tls_creds_anon_finalize(Object *obj)
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{
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QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
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qcrypto_tls_creds_anon_unload(creds);
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}
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static void
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qcrypto_tls_creds_anon_class_init(ObjectClass *oc, void *data)
|
|
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{
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UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
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ucc->complete = qcrypto_tls_creds_anon_complete;
|
2015-08-24 19:46:57 +02:00
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object_class_property_add_bool(oc, "loaded",
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qcrypto_tls_creds_anon_prop_get_loaded,
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|
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qcrypto_tls_creds_anon_prop_set_loaded,
|
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|
|
NULL);
|
crypto: introduce new module for TLS anonymous credentials
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-03-13 18:39:26 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
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|
|
static const TypeInfo qcrypto_tls_creds_anon_info = {
|
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.parent = TYPE_QCRYPTO_TLS_CREDS,
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.name = TYPE_QCRYPTO_TLS_CREDS_ANON,
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.instance_size = sizeof(QCryptoTLSCredsAnon),
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.instance_finalize = qcrypto_tls_creds_anon_finalize,
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.class_size = sizeof(QCryptoTLSCredsAnonClass),
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|
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.class_init = qcrypto_tls_creds_anon_class_init,
|
|
|
|
.interfaces = (InterfaceInfo[]) {
|
|
|
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{ TYPE_USER_CREATABLE },
|
|
|
|
{ }
|
|
|
|
}
|
|
|
|
};
|
|
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|
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static void
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|
|
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qcrypto_tls_creds_anon_register_types(void)
|
|
|
|
{
|
|
|
|
type_register_static(&qcrypto_tls_creds_anon_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
type_init(qcrypto_tls_creds_anon_register_types);
|