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ef19b50d93
There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023123130.19656-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
177 lines
5.3 KiB
C
177 lines
5.3 KiB
C
/*
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* QEMU migration TLS 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 2.1 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 "qemu/osdep.h"
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#include "channel.h"
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#include "migration.h"
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#include "tls.h"
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#include "crypto/tlscreds.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "trace.h"
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static QCryptoTLSCreds *
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migration_tls_get_creds(MigrationState *s,
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QCryptoTLSCredsEndpoint endpoint,
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Error **errp)
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{
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Object *creds;
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QCryptoTLSCreds *ret;
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creds = object_resolve_path_component(
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object_get_objects_root(), s->parameters.tls_creds);
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if (!creds) {
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error_setg(errp, "No TLS credentials with id '%s'",
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s->parameters.tls_creds);
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return NULL;
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}
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ret = (QCryptoTLSCreds *)object_dynamic_cast(
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creds, TYPE_QCRYPTO_TLS_CREDS);
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if (!ret) {
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error_setg(errp, "Object with id '%s' is not TLS credentials",
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s->parameters.tls_creds);
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return NULL;
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}
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if (ret->endpoint != endpoint) {
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error_setg(errp,
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"Expected TLS credentials for a %s endpoint",
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endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT ?
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"client" : "server");
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return NULL;
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}
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return ret;
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}
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static void migration_tls_incoming_handshake(QIOTask *task,
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gpointer opaque)
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{
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QIOChannel *ioc = QIO_CHANNEL(qio_task_get_source(task));
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Error *err = NULL;
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if (qio_task_propagate_error(task, &err)) {
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trace_migration_tls_incoming_handshake_error(error_get_pretty(err));
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error_report_err(err);
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} else {
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trace_migration_tls_incoming_handshake_complete();
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migration_channel_process_incoming(ioc);
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}
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object_unref(OBJECT(ioc));
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}
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void migration_tls_channel_process_incoming(MigrationState *s,
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QIOChannel *ioc,
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Error **errp)
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{
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QCryptoTLSCreds *creds;
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QIOChannelTLS *tioc;
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creds = migration_tls_get_creds(
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s, QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, errp);
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if (!creds) {
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return;
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}
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tioc = qio_channel_tls_new_server(
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ioc, creds,
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s->parameters.tls_authz,
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errp);
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if (!tioc) {
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return;
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}
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trace_migration_tls_incoming_handshake_start();
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qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-incoming");
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qio_channel_tls_handshake(tioc,
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migration_tls_incoming_handshake,
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NULL,
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NULL,
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NULL);
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}
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static void migration_tls_outgoing_handshake(QIOTask *task,
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gpointer opaque)
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{
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MigrationState *s = opaque;
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QIOChannel *ioc = QIO_CHANNEL(qio_task_get_source(task));
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Error *err = NULL;
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if (qio_task_propagate_error(task, &err)) {
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trace_migration_tls_outgoing_handshake_error(error_get_pretty(err));
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} else {
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trace_migration_tls_outgoing_handshake_complete();
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}
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migration_channel_connect(s, ioc, NULL, err);
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object_unref(OBJECT(ioc));
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}
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QIOChannelTLS *migration_tls_client_create(MigrationState *s,
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QIOChannel *ioc,
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const char *hostname,
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Error **errp)
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{
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QCryptoTLSCreds *creds;
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QIOChannelTLS *tioc;
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creds = migration_tls_get_creds(
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s, QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, errp);
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if (!creds) {
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return NULL;
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}
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if (s->parameters.tls_hostname && *s->parameters.tls_hostname) {
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hostname = s->parameters.tls_hostname;
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}
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if (!hostname) {
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error_setg(errp, "No hostname available for TLS");
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return NULL;
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}
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tioc = qio_channel_tls_new_client(
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ioc, creds, hostname, errp);
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return tioc;
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}
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void migration_tls_channel_connect(MigrationState *s,
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QIOChannel *ioc,
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const char *hostname,
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Error **errp)
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{
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QIOChannelTLS *tioc;
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tioc = migration_tls_client_create(s, ioc, hostname, errp);
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if (!tioc) {
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return;
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}
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/* Save hostname into MigrationState for handshake */
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s->hostname = g_strdup(hostname);
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trace_migration_tls_outgoing_handshake_start(hostname);
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qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-outgoing");
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qio_channel_tls_handshake(tioc,
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migration_tls_outgoing_handshake,
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s,
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NULL,
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NULL);
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}
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