diff options
Diffstat (limited to 'crypto/tlscredsanon.c')
| -rw-r--r-- | crypto/tlscredsanon.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/crypto/tlscredsanon.c b/crypto/tlscredsanon.c new file mode 100644 index 0000000..c3fcdaf --- /dev/null +++ b/crypto/tlscredsanon.c @@ -0,0 +1,223 @@ +/* + * QEMU crypto TLS anonymous credential support + * + * 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/tlscredsanon.h" +#include "crypto/tlscredspriv.h" +#include "qom/object_interfaces.h" +#include "trace.h" + + +#ifdef CONFIG_GNUTLS + + +static int +qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds, + Error **errp) +{ + char *dhparams = NULL; + int ret; + int rv = -1; + + trace_qcrypto_tls_creds_anon_load(creds, + creds->parent_obj.dir ? creds->parent_obj.dir : "<nodir>"); + + if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { + if (qcrypto_tls_creds_get_path(&creds->parent_obj, + QCRYPTO_TLS_CREDS_DH_PARAMS, + false, &dhparams, errp) < 0) { + goto cleanup; + } + + ret = gnutls_anon_allocate_server_credentials(&creds->data.server); + if (ret < 0) { + error_setg(errp, "Cannot allocate credentials: %s", + gnutls_strerror(ret)); + goto cleanup; + } + + if (qcrypto_tls_creds_get_dh_params_file(&creds->parent_obj, dhparams, + &creds->parent_obj.dh_params, + errp) < 0) { + goto cleanup; + } + + gnutls_anon_set_server_dh_params(creds->data.server, + creds->parent_obj.dh_params); + } else { + ret = gnutls_anon_allocate_client_credentials(&creds->data.client); + if (ret < 0) { + error_setg(errp, "Cannot allocate credentials: %s", + gnutls_strerror(ret)); + goto cleanup; + } + } + + rv = 0; + cleanup: + g_free(dhparams); + return rv; +} + + +static void +qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds) +{ + if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { + if (creds->data.client) { + gnutls_anon_free_client_credentials(creds->data.client); + creds->data.client = NULL; + } + } else { + if (creds->data.server) { + gnutls_anon_free_server_credentials(creds->data.server); + creds->data.server = NULL; + } + } + if (creds->parent_obj.dh_params) { + gnutls_dh_params_deinit(creds->parent_obj.dh_params); + creds->parent_obj.dh_params = NULL; + } +} + +#else /* ! CONFIG_GNUTLS */ + + +static void +qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED, + Error **errp) +{ + error_setg(errp, "TLS credentials support requires GNUTLS"); +} + + +static void +qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED) +{ + /* nada */ +} + + +#endif /* ! CONFIG_GNUTLS */ + + +static void +qcrypto_tls_creds_anon_prop_set_loaded(Object *obj, + bool value, + Error **errp) +{ + QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj); + + if (value) { + qcrypto_tls_creds_anon_load(creds, errp); + } else { + qcrypto_tls_creds_anon_unload(creds); + } +} + + +#ifdef CONFIG_GNUTLS + + +static bool +qcrypto_tls_creds_anon_prop_get_loaded(Object *obj, + Error **errp G_GNUC_UNUSED) +{ + QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj); + + if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { + return creds->data.server != NULL; + } else { + return creds->data.client != NULL; + } +} + + +#else /* ! CONFIG_GNUTLS */ + + +static bool +qcrypto_tls_creds_anon_prop_get_loaded(Object *obj G_GNUC_UNUSED, + Error **errp G_GNUC_UNUSED) +{ + return false; +} + + +#endif /* ! CONFIG_GNUTLS */ + + +static void +qcrypto_tls_creds_anon_complete(UserCreatable *uc, Error **errp) +{ + object_property_set_bool(OBJECT(uc), true, "loaded", errp); +} + + +static void +qcrypto_tls_creds_anon_init(Object *obj) +{ + object_property_add_bool(obj, "loaded", + qcrypto_tls_creds_anon_prop_get_loaded, + qcrypto_tls_creds_anon_prop_set_loaded, + NULL); +} + + +static void +qcrypto_tls_creds_anon_finalize(Object *obj) +{ + QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj); + + qcrypto_tls_creds_anon_unload(creds); +} + + +static void +qcrypto_tls_creds_anon_class_init(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + + ucc->complete = qcrypto_tls_creds_anon_complete; +} + + +static const TypeInfo qcrypto_tls_creds_anon_info = { + .parent = TYPE_QCRYPTO_TLS_CREDS, + .name = TYPE_QCRYPTO_TLS_CREDS_ANON, + .instance_size = sizeof(QCryptoTLSCredsAnon), + .instance_init = qcrypto_tls_creds_anon_init, + .instance_finalize = qcrypto_tls_creds_anon_finalize, + .class_size = sizeof(QCryptoTLSCredsAnonClass), + .class_init = qcrypto_tls_creds_anon_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_USER_CREATABLE }, + { } + } +}; + + +static void +qcrypto_tls_creds_anon_register_types(void) +{ + type_register_static(&qcrypto_tls_creds_anon_info); +} + + +type_init(qcrypto_tls_creds_anon_register_types); |