Merge tag 'pull-loongarch-20241016' of https://gitlab.com/gaosong/qemu into staging
[qemu/armbru.git] / migration / tls.c
blobfa03d9136ca3201ee362e54333037e6740f9f2dc
1 /*
2 * QEMU migration TLS support
4 * Copyright (c) 2015 Red Hat, Inc.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include "channel.h"
23 #include "migration.h"
24 #include "tls.h"
25 #include "options.h"
26 #include "crypto/tlscreds.h"
27 #include "qemu/error-report.h"
28 #include "qapi/error.h"
29 #include "trace.h"
31 static QCryptoTLSCreds *
32 migration_tls_get_creds(QCryptoTLSCredsEndpoint endpoint, Error **errp)
34 Object *creds;
35 const char *tls_creds = migrate_tls_creds();
36 QCryptoTLSCreds *ret;
38 creds = object_resolve_path_component(object_get_objects_root(), tls_creds);
39 if (!creds) {
40 error_setg(errp, "No TLS credentials with id '%s'", tls_creds);
41 return NULL;
43 ret = (QCryptoTLSCreds *)object_dynamic_cast(
44 creds, TYPE_QCRYPTO_TLS_CREDS);
45 if (!ret) {
46 error_setg(errp, "Object with id '%s' is not TLS credentials",
47 tls_creds);
48 return NULL;
50 if (!qcrypto_tls_creds_check_endpoint(ret, endpoint, errp)) {
51 return NULL;
54 return ret;
58 static void migration_tls_incoming_handshake(QIOTask *task,
59 gpointer opaque)
61 QIOChannel *ioc = QIO_CHANNEL(qio_task_get_source(task));
62 Error *err = NULL;
64 if (qio_task_propagate_error(task, &err)) {
65 trace_migration_tls_incoming_handshake_error(error_get_pretty(err));
66 error_report_err(err);
67 } else {
68 trace_migration_tls_incoming_handshake_complete();
69 migration_channel_process_incoming(ioc);
71 object_unref(OBJECT(ioc));
74 void migration_tls_channel_process_incoming(MigrationState *s,
75 QIOChannel *ioc,
76 Error **errp)
78 QCryptoTLSCreds *creds;
79 QIOChannelTLS *tioc;
81 creds = migration_tls_get_creds(QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, errp);
82 if (!creds) {
83 return;
86 tioc = qio_channel_tls_new_server(ioc, creds, migrate_tls_authz(), errp);
87 if (!tioc) {
88 return;
91 trace_migration_tls_incoming_handshake_start();
92 qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-incoming");
93 qio_channel_tls_handshake(tioc,
94 migration_tls_incoming_handshake,
95 NULL,
96 NULL,
97 NULL);
101 static void migration_tls_outgoing_handshake(QIOTask *task,
102 gpointer opaque)
104 MigrationState *s = opaque;
105 QIOChannel *ioc = QIO_CHANNEL(qio_task_get_source(task));
106 Error *err = NULL;
108 if (qio_task_propagate_error(task, &err)) {
109 trace_migration_tls_outgoing_handshake_error(error_get_pretty(err));
110 } else {
111 trace_migration_tls_outgoing_handshake_complete();
113 migration_channel_connect(s, ioc, NULL, err);
114 object_unref(OBJECT(ioc));
117 QIOChannelTLS *migration_tls_client_create(QIOChannel *ioc,
118 const char *hostname,
119 Error **errp)
121 QCryptoTLSCreds *creds;
123 creds = migration_tls_get_creds(QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, errp);
124 if (!creds) {
125 return NULL;
128 const char *tls_hostname = migrate_tls_hostname();
129 if (tls_hostname && *tls_hostname) {
130 hostname = tls_hostname;
133 return qio_channel_tls_new_client(ioc, creds, hostname, errp);
136 void migration_tls_channel_connect(MigrationState *s,
137 QIOChannel *ioc,
138 const char *hostname,
139 Error **errp)
141 QIOChannelTLS *tioc;
143 tioc = migration_tls_client_create(ioc, hostname, errp);
144 if (!tioc) {
145 return;
148 /* Save hostname into MigrationState for handshake */
149 s->hostname = g_strdup(hostname);
150 trace_migration_tls_outgoing_handshake_start(hostname);
151 qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-outgoing");
152 qio_channel_tls_handshake(tioc,
153 migration_tls_outgoing_handshake,
155 NULL,
156 NULL);
159 bool migrate_channel_requires_tls_upgrade(QIOChannel *ioc)
161 if (!migrate_tls()) {
162 return false;
165 return !object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_TLS);