mirror of https://github.com/proxmox/mirror_qemu
224 lines
5.8 KiB
C
224 lines
5.8 KiB
C
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/*
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* 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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* version 2 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 <http://www.gnu.org/licenses/>.
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*
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*/
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#include "crypto/tlscredsanon.h"
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#include "crypto/tlscredspriv.h"
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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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#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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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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#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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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_init(Object *obj)
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{
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object_property_add_bool(obj, "loaded",
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qcrypto_tls_creds_anon_prop_get_loaded,
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qcrypto_tls_creds_anon_prop_set_loaded,
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NULL);
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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;
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}
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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_init = qcrypto_tls_creds_anon_init,
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.instance_finalize = qcrypto_tls_creds_anon_finalize,
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.class_size = sizeof(QCryptoTLSCredsAnonClass),
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.class_init = qcrypto_tls_creds_anon_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_USER_CREATABLE },
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{ }
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}
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};
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static void
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qcrypto_tls_creds_anon_register_types(void)
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{
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type_register_static(&qcrypto_tls_creds_anon_info);
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}
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type_init(qcrypto_tls_creds_anon_register_types);
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