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d321e1e5 DB |
1 | /* |
2 | * QEMU crypto TLS session support | |
3 | * | |
4 | * Copyright (c) 2015 Red Hat, Inc. | |
5 | * | |
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 | |
b7cbb874 | 9 | * version 2.1 of the License, or (at your option) any later version. |
d321e1e5 DB |
10 | * |
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. | |
15 | * | |
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/>. | |
18 | * | |
19 | */ | |
20 | ||
42f7a448 | 21 | #include "qemu/osdep.h" |
d321e1e5 DB |
22 | #include "crypto/tlssession.h" |
23 | #include "crypto/tlscredsanon.h" | |
e1a6dc91 | 24 | #include "crypto/tlscredspsk.h" |
d321e1e5 | 25 | #include "crypto/tlscredsx509.h" |
da34e65c | 26 | #include "qapi/error.h" |
b76806d4 | 27 | #include "authz/base.h" |
678bcc3c | 28 | #include "tlscredspriv.h" |
d321e1e5 DB |
29 | #include "trace.h" |
30 | ||
31 | #ifdef CONFIG_GNUTLS | |
32 | ||
33 | ||
34 | #include <gnutls/x509.h> | |
35 | ||
36 | ||
37 | struct QCryptoTLSSession { | |
38 | QCryptoTLSCreds *creds; | |
39 | gnutls_session_t handle; | |
40 | char *hostname; | |
b76806d4 | 41 | char *authzid; |
d321e1e5 DB |
42 | bool handshakeComplete; |
43 | QCryptoTLSSessionWriteFunc writeFunc; | |
44 | QCryptoTLSSessionReadFunc readFunc; | |
45 | void *opaque; | |
46 | char *peername; | |
47 | }; | |
48 | ||
49 | ||
50 | void | |
51 | qcrypto_tls_session_free(QCryptoTLSSession *session) | |
52 | { | |
53 | if (!session) { | |
54 | return; | |
55 | } | |
56 | ||
57 | gnutls_deinit(session->handle); | |
58 | g_free(session->hostname); | |
59 | g_free(session->peername); | |
b76806d4 | 60 | g_free(session->authzid); |
d321e1e5 DB |
61 | object_unref(OBJECT(session->creds)); |
62 | g_free(session); | |
63 | } | |
64 | ||
65 | ||
66 | static ssize_t | |
67 | qcrypto_tls_session_push(void *opaque, const void *buf, size_t len) | |
68 | { | |
69 | QCryptoTLSSession *session = opaque; | |
70 | ||
71 | if (!session->writeFunc) { | |
72 | errno = EIO; | |
73 | return -1; | |
74 | }; | |
75 | ||
76 | return session->writeFunc(buf, len, session->opaque); | |
77 | } | |
78 | ||
79 | ||
80 | static ssize_t | |
81 | qcrypto_tls_session_pull(void *opaque, void *buf, size_t len) | |
82 | { | |
83 | QCryptoTLSSession *session = opaque; | |
84 | ||
85 | if (!session->readFunc) { | |
86 | errno = EIO; | |
87 | return -1; | |
88 | }; | |
89 | ||
90 | return session->readFunc(buf, len, session->opaque); | |
91 | } | |
92 | ||
e1a6dc91 | 93 | #define TLS_PRIORITY_ADDITIONAL_ANON "+ANON-DH" |
a0722409 | 94 | #define TLS_PRIORITY_ADDITIONAL_PSK "+ECDHE-PSK:+DHE-PSK:+PSK" |
d321e1e5 DB |
95 | |
96 | QCryptoTLSSession * | |
97 | qcrypto_tls_session_new(QCryptoTLSCreds *creds, | |
98 | const char *hostname, | |
b76806d4 | 99 | const char *authzid, |
d321e1e5 DB |
100 | QCryptoTLSCredsEndpoint endpoint, |
101 | Error **errp) | |
102 | { | |
103 | QCryptoTLSSession *session; | |
104 | int ret; | |
105 | ||
106 | session = g_new0(QCryptoTLSSession, 1); | |
107 | trace_qcrypto_tls_session_new( | |
108 | session, creds, hostname ? hostname : "<none>", | |
b76806d4 | 109 | authzid ? authzid : "<none>", endpoint); |
d321e1e5 DB |
110 | |
111 | if (hostname) { | |
112 | session->hostname = g_strdup(hostname); | |
113 | } | |
b76806d4 DB |
114 | if (authzid) { |
115 | session->authzid = g_strdup(authzid); | |
d321e1e5 DB |
116 | } |
117 | session->creds = creds; | |
118 | object_ref(OBJECT(creds)); | |
119 | ||
120 | if (creds->endpoint != endpoint) { | |
121 | error_setg(errp, "Credentials endpoint doesn't match session"); | |
122 | goto error; | |
123 | } | |
124 | ||
125 | if (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
126 | ret = gnutls_init(&session->handle, GNUTLS_SERVER); | |
127 | } else { | |
128 | ret = gnutls_init(&session->handle, GNUTLS_CLIENT); | |
129 | } | |
130 | if (ret < 0) { | |
131 | error_setg(errp, "Cannot initialize TLS session: %s", | |
132 | gnutls_strerror(ret)); | |
133 | goto error; | |
134 | } | |
135 | ||
136 | if (object_dynamic_cast(OBJECT(creds), | |
137 | TYPE_QCRYPTO_TLS_CREDS_ANON)) { | |
138 | QCryptoTLSCredsAnon *acreds = QCRYPTO_TLS_CREDS_ANON(creds); | |
13f12430 | 139 | char *prio; |
d321e1e5 | 140 | |
13f12430 | 141 | if (creds->priority != NULL) { |
e1a6dc91 RJ |
142 | prio = g_strdup_printf("%s:%s", |
143 | creds->priority, | |
144 | TLS_PRIORITY_ADDITIONAL_ANON); | |
13f12430 | 145 | } else { |
e1a6dc91 RJ |
146 | prio = g_strdup(CONFIG_TLS_PRIORITY ":" |
147 | TLS_PRIORITY_ADDITIONAL_ANON); | |
13f12430 DB |
148 | } |
149 | ||
150 | ret = gnutls_priority_set_direct(session->handle, prio, NULL); | |
d321e1e5 | 151 | if (ret < 0) { |
13f12430 DB |
152 | error_setg(errp, "Unable to set TLS session priority %s: %s", |
153 | prio, gnutls_strerror(ret)); | |
154 | g_free(prio); | |
d321e1e5 DB |
155 | goto error; |
156 | } | |
13f12430 | 157 | g_free(prio); |
d321e1e5 DB |
158 | if (creds->endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { |
159 | ret = gnutls_credentials_set(session->handle, | |
160 | GNUTLS_CRD_ANON, | |
161 | acreds->data.server); | |
162 | } else { | |
163 | ret = gnutls_credentials_set(session->handle, | |
164 | GNUTLS_CRD_ANON, | |
165 | acreds->data.client); | |
166 | } | |
167 | if (ret < 0) { | |
168 | error_setg(errp, "Cannot set session credentials: %s", | |
169 | gnutls_strerror(ret)); | |
170 | goto error; | |
171 | } | |
e1a6dc91 RJ |
172 | } else if (object_dynamic_cast(OBJECT(creds), |
173 | TYPE_QCRYPTO_TLS_CREDS_PSK)) { | |
174 | QCryptoTLSCredsPSK *pcreds = QCRYPTO_TLS_CREDS_PSK(creds); | |
175 | char *prio; | |
176 | ||
177 | if (creds->priority != NULL) { | |
178 | prio = g_strdup_printf("%s:%s", | |
179 | creds->priority, | |
180 | TLS_PRIORITY_ADDITIONAL_PSK); | |
181 | } else { | |
182 | prio = g_strdup(CONFIG_TLS_PRIORITY ":" | |
183 | TLS_PRIORITY_ADDITIONAL_PSK); | |
184 | } | |
185 | ||
186 | ret = gnutls_priority_set_direct(session->handle, prio, NULL); | |
187 | if (ret < 0) { | |
188 | error_setg(errp, "Unable to set TLS session priority %s: %s", | |
189 | prio, gnutls_strerror(ret)); | |
190 | g_free(prio); | |
191 | goto error; | |
192 | } | |
193 | g_free(prio); | |
194 | if (creds->endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
195 | ret = gnutls_credentials_set(session->handle, | |
196 | GNUTLS_CRD_PSK, | |
197 | pcreds->data.server); | |
198 | } else { | |
199 | ret = gnutls_credentials_set(session->handle, | |
200 | GNUTLS_CRD_PSK, | |
201 | pcreds->data.client); | |
202 | } | |
203 | if (ret < 0) { | |
204 | error_setg(errp, "Cannot set session credentials: %s", | |
205 | gnutls_strerror(ret)); | |
206 | goto error; | |
207 | } | |
d321e1e5 DB |
208 | } else if (object_dynamic_cast(OBJECT(creds), |
209 | TYPE_QCRYPTO_TLS_CREDS_X509)) { | |
210 | QCryptoTLSCredsX509 *tcreds = QCRYPTO_TLS_CREDS_X509(creds); | |
13f12430 DB |
211 | const char *prio = creds->priority; |
212 | if (!prio) { | |
a1c5e949 | 213 | prio = CONFIG_TLS_PRIORITY; |
13f12430 | 214 | } |
d321e1e5 | 215 | |
13f12430 | 216 | ret = gnutls_priority_set_direct(session->handle, prio, NULL); |
d321e1e5 | 217 | if (ret < 0) { |
13f12430 DB |
218 | error_setg(errp, "Cannot set default TLS session priority %s: %s", |
219 | prio, gnutls_strerror(ret)); | |
d321e1e5 DB |
220 | goto error; |
221 | } | |
222 | ret = gnutls_credentials_set(session->handle, | |
223 | GNUTLS_CRD_CERTIFICATE, | |
224 | tcreds->data); | |
225 | if (ret < 0) { | |
226 | error_setg(errp, "Cannot set session credentials: %s", | |
227 | gnutls_strerror(ret)); | |
228 | goto error; | |
229 | } | |
230 | ||
231 | if (creds->endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
232 | /* This requests, but does not enforce a client cert. | |
233 | * The cert checking code later does enforcement */ | |
234 | gnutls_certificate_server_set_request(session->handle, | |
235 | GNUTLS_CERT_REQUEST); | |
236 | } | |
237 | } else { | |
238 | error_setg(errp, "Unsupported TLS credentials type %s", | |
239 | object_get_typename(OBJECT(creds))); | |
240 | goto error; | |
241 | } | |
242 | ||
243 | gnutls_transport_set_ptr(session->handle, session); | |
244 | gnutls_transport_set_push_function(session->handle, | |
245 | qcrypto_tls_session_push); | |
246 | gnutls_transport_set_pull_function(session->handle, | |
247 | qcrypto_tls_session_pull); | |
248 | ||
249 | return session; | |
250 | ||
251 | error: | |
252 | qcrypto_tls_session_free(session); | |
253 | return NULL; | |
254 | } | |
255 | ||
256 | static int | |
257 | qcrypto_tls_session_check_certificate(QCryptoTLSSession *session, | |
258 | Error **errp) | |
259 | { | |
260 | int ret; | |
261 | unsigned int status; | |
262 | const gnutls_datum_t *certs; | |
263 | unsigned int nCerts, i; | |
264 | time_t now; | |
265 | gnutls_x509_crt_t cert = NULL; | |
b76806d4 | 266 | Error *err = NULL; |
d321e1e5 DB |
267 | |
268 | now = time(NULL); | |
269 | if (now == ((time_t)-1)) { | |
270 | error_setg_errno(errp, errno, "Cannot get current time"); | |
271 | return -1; | |
272 | } | |
273 | ||
274 | ret = gnutls_certificate_verify_peers2(session->handle, &status); | |
275 | if (ret < 0) { | |
276 | error_setg(errp, "Verify failed: %s", gnutls_strerror(ret)); | |
277 | return -1; | |
278 | } | |
279 | ||
280 | if (status != 0) { | |
281 | const char *reason = "Invalid certificate"; | |
282 | ||
283 | if (status & GNUTLS_CERT_INVALID) { | |
284 | reason = "The certificate is not trusted"; | |
285 | } | |
286 | ||
287 | if (status & GNUTLS_CERT_SIGNER_NOT_FOUND) { | |
288 | reason = "The certificate hasn't got a known issuer"; | |
289 | } | |
290 | ||
291 | if (status & GNUTLS_CERT_REVOKED) { | |
292 | reason = "The certificate has been revoked"; | |
293 | } | |
294 | ||
295 | if (status & GNUTLS_CERT_INSECURE_ALGORITHM) { | |
296 | reason = "The certificate uses an insecure algorithm"; | |
297 | } | |
298 | ||
299 | error_setg(errp, "%s", reason); | |
300 | return -1; | |
301 | } | |
302 | ||
303 | certs = gnutls_certificate_get_peers(session->handle, &nCerts); | |
304 | if (!certs) { | |
305 | error_setg(errp, "No certificate peers"); | |
306 | return -1; | |
307 | } | |
308 | ||
309 | for (i = 0; i < nCerts; i++) { | |
310 | ret = gnutls_x509_crt_init(&cert); | |
311 | if (ret < 0) { | |
312 | error_setg(errp, "Cannot initialize certificate: %s", | |
313 | gnutls_strerror(ret)); | |
314 | return -1; | |
315 | } | |
316 | ||
317 | ret = gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER); | |
318 | if (ret < 0) { | |
319 | error_setg(errp, "Cannot import certificate: %s", | |
320 | gnutls_strerror(ret)); | |
321 | goto error; | |
322 | } | |
323 | ||
324 | if (gnutls_x509_crt_get_expiration_time(cert) < now) { | |
325 | error_setg(errp, "The certificate has expired"); | |
326 | goto error; | |
327 | } | |
328 | ||
329 | if (gnutls_x509_crt_get_activation_time(cert) > now) { | |
330 | error_setg(errp, "The certificate is not yet activated"); | |
331 | goto error; | |
332 | } | |
333 | ||
334 | if (gnutls_x509_crt_get_activation_time(cert) > now) { | |
335 | error_setg(errp, "The certificate is not yet activated"); | |
336 | goto error; | |
337 | } | |
338 | ||
339 | if (i == 0) { | |
340 | size_t dnameSize = 1024; | |
341 | session->peername = g_malloc(dnameSize); | |
342 | requery: | |
343 | ret = gnutls_x509_crt_get_dn(cert, session->peername, &dnameSize); | |
344 | if (ret < 0) { | |
345 | if (ret == GNUTLS_E_SHORT_MEMORY_BUFFER) { | |
346 | session->peername = g_realloc(session->peername, | |
347 | dnameSize); | |
348 | goto requery; | |
349 | } | |
350 | error_setg(errp, "Cannot get client distinguished name: %s", | |
351 | gnutls_strerror(ret)); | |
352 | goto error; | |
353 | } | |
b76806d4 DB |
354 | if (session->authzid) { |
355 | bool allow; | |
356 | ||
357 | allow = qauthz_is_allowed_by_id(session->authzid, | |
358 | session->peername, &err); | |
359 | if (err) { | |
360 | error_propagate(errp, err); | |
d321e1e5 DB |
361 | goto error; |
362 | } | |
d321e1e5 | 363 | if (!allow) { |
b76806d4 | 364 | error_setg(errp, "TLS x509 authz check for %s is denied", |
6ef8cd7a | 365 | session->peername); |
d321e1e5 DB |
366 | goto error; |
367 | } | |
368 | } | |
369 | if (session->hostname) { | |
370 | if (!gnutls_x509_crt_check_hostname(cert, session->hostname)) { | |
371 | error_setg(errp, | |
372 | "Certificate does not match the hostname %s", | |
373 | session->hostname); | |
374 | goto error; | |
375 | } | |
376 | } | |
377 | } | |
378 | ||
379 | gnutls_x509_crt_deinit(cert); | |
380 | } | |
381 | ||
382 | return 0; | |
383 | ||
384 | error: | |
385 | gnutls_x509_crt_deinit(cert); | |
386 | return -1; | |
387 | } | |
388 | ||
389 | ||
390 | int | |
391 | qcrypto_tls_session_check_credentials(QCryptoTLSSession *session, | |
392 | Error **errp) | |
393 | { | |
394 | if (object_dynamic_cast(OBJECT(session->creds), | |
395 | TYPE_QCRYPTO_TLS_CREDS_ANON)) { | |
b57482d7 | 396 | trace_qcrypto_tls_session_check_creds(session, "nop"); |
d321e1e5 | 397 | return 0; |
e1a6dc91 RJ |
398 | } else if (object_dynamic_cast(OBJECT(session->creds), |
399 | TYPE_QCRYPTO_TLS_CREDS_PSK)) { | |
400 | trace_qcrypto_tls_session_check_creds(session, "nop"); | |
401 | return 0; | |
d321e1e5 DB |
402 | } else if (object_dynamic_cast(OBJECT(session->creds), |
403 | TYPE_QCRYPTO_TLS_CREDS_X509)) { | |
404 | if (session->creds->verifyPeer) { | |
b57482d7 DB |
405 | int ret = qcrypto_tls_session_check_certificate(session, |
406 | errp); | |
407 | trace_qcrypto_tls_session_check_creds(session, | |
408 | ret == 0 ? "pass" : "fail"); | |
409 | return ret; | |
d321e1e5 | 410 | } else { |
b57482d7 | 411 | trace_qcrypto_tls_session_check_creds(session, "skip"); |
d321e1e5 DB |
412 | return 0; |
413 | } | |
414 | } else { | |
b57482d7 | 415 | trace_qcrypto_tls_session_check_creds(session, "error"); |
d321e1e5 DB |
416 | error_setg(errp, "Unexpected credential type %s", |
417 | object_get_typename(OBJECT(session->creds))); | |
418 | return -1; | |
419 | } | |
420 | } | |
421 | ||
422 | ||
423 | void | |
424 | qcrypto_tls_session_set_callbacks(QCryptoTLSSession *session, | |
425 | QCryptoTLSSessionWriteFunc writeFunc, | |
426 | QCryptoTLSSessionReadFunc readFunc, | |
427 | void *opaque) | |
428 | { | |
429 | session->writeFunc = writeFunc; | |
430 | session->readFunc = readFunc; | |
431 | session->opaque = opaque; | |
432 | } | |
433 | ||
434 | ||
435 | ssize_t | |
436 | qcrypto_tls_session_write(QCryptoTLSSession *session, | |
437 | const char *buf, | |
438 | size_t len) | |
439 | { | |
440 | ssize_t ret = gnutls_record_send(session->handle, buf, len); | |
441 | ||
442 | if (ret < 0) { | |
443 | switch (ret) { | |
444 | case GNUTLS_E_AGAIN: | |
445 | errno = EAGAIN; | |
446 | break; | |
447 | case GNUTLS_E_INTERRUPTED: | |
448 | errno = EINTR; | |
449 | break; | |
450 | default: | |
451 | errno = EIO; | |
452 | break; | |
453 | } | |
454 | ret = -1; | |
455 | } | |
456 | ||
457 | return ret; | |
458 | } | |
459 | ||
460 | ||
461 | ssize_t | |
462 | qcrypto_tls_session_read(QCryptoTLSSession *session, | |
463 | char *buf, | |
464 | size_t len) | |
465 | { | |
466 | ssize_t ret = gnutls_record_recv(session->handle, buf, len); | |
467 | ||
468 | if (ret < 0) { | |
469 | switch (ret) { | |
470 | case GNUTLS_E_AGAIN: | |
471 | errno = EAGAIN; | |
472 | break; | |
473 | case GNUTLS_E_INTERRUPTED: | |
474 | errno = EINTR; | |
475 | break; | |
a2458b6f DB |
476 | case GNUTLS_E_PREMATURE_TERMINATION: |
477 | errno = ECONNABORTED; | |
478 | break; | |
d321e1e5 DB |
479 | default: |
480 | errno = EIO; | |
481 | break; | |
482 | } | |
483 | ret = -1; | |
484 | } | |
485 | ||
486 | return ret; | |
487 | } | |
488 | ||
489 | ||
490 | int | |
491 | qcrypto_tls_session_handshake(QCryptoTLSSession *session, | |
492 | Error **errp) | |
493 | { | |
494 | int ret = gnutls_handshake(session->handle); | |
495 | if (ret == 0) { | |
496 | session->handshakeComplete = true; | |
497 | } else { | |
498 | if (ret == GNUTLS_E_INTERRUPTED || | |
499 | ret == GNUTLS_E_AGAIN) { | |
500 | ret = 1; | |
501 | } else { | |
502 | error_setg(errp, "TLS handshake failed: %s", | |
503 | gnutls_strerror(ret)); | |
504 | ret = -1; | |
505 | } | |
506 | } | |
507 | ||
508 | return ret; | |
509 | } | |
510 | ||
511 | ||
512 | QCryptoTLSSessionHandshakeStatus | |
513 | qcrypto_tls_session_get_handshake_status(QCryptoTLSSession *session) | |
514 | { | |
515 | if (session->handshakeComplete) { | |
516 | return QCRYPTO_TLS_HANDSHAKE_COMPLETE; | |
517 | } else if (gnutls_record_get_direction(session->handle) == 0) { | |
518 | return QCRYPTO_TLS_HANDSHAKE_RECVING; | |
519 | } else { | |
520 | return QCRYPTO_TLS_HANDSHAKE_SENDING; | |
521 | } | |
522 | } | |
523 | ||
524 | ||
525 | int | |
526 | qcrypto_tls_session_get_key_size(QCryptoTLSSession *session, | |
527 | Error **errp) | |
528 | { | |
529 | gnutls_cipher_algorithm_t cipher; | |
530 | int ssf; | |
531 | ||
532 | cipher = gnutls_cipher_get(session->handle); | |
533 | ssf = gnutls_cipher_get_key_size(cipher); | |
534 | if (!ssf) { | |
535 | error_setg(errp, "Cannot get TLS cipher key size"); | |
536 | return -1; | |
537 | } | |
538 | return ssf; | |
539 | } | |
540 | ||
541 | ||
542 | char * | |
543 | qcrypto_tls_session_get_peer_name(QCryptoTLSSession *session) | |
544 | { | |
545 | if (session->peername) { | |
546 | return g_strdup(session->peername); | |
547 | } | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | ||
552 | #else /* ! CONFIG_GNUTLS */ | |
553 | ||
554 | ||
555 | QCryptoTLSSession * | |
556 | qcrypto_tls_session_new(QCryptoTLSCreds *creds G_GNUC_UNUSED, | |
557 | const char *hostname G_GNUC_UNUSED, | |
b76806d4 | 558 | const char *authzid G_GNUC_UNUSED, |
d321e1e5 DB |
559 | QCryptoTLSCredsEndpoint endpoint G_GNUC_UNUSED, |
560 | Error **errp) | |
561 | { | |
562 | error_setg(errp, "TLS requires GNUTLS support"); | |
563 | return NULL; | |
564 | } | |
565 | ||
566 | ||
567 | void | |
568 | qcrypto_tls_session_free(QCryptoTLSSession *sess G_GNUC_UNUSED) | |
569 | { | |
570 | } | |
571 | ||
572 | ||
573 | int | |
574 | qcrypto_tls_session_check_credentials(QCryptoTLSSession *sess G_GNUC_UNUSED, | |
575 | Error **errp) | |
576 | { | |
577 | error_setg(errp, "TLS requires GNUTLS support"); | |
578 | return -1; | |
579 | } | |
580 | ||
581 | ||
582 | void | |
583 | qcrypto_tls_session_set_callbacks( | |
584 | QCryptoTLSSession *sess G_GNUC_UNUSED, | |
585 | QCryptoTLSSessionWriteFunc writeFunc G_GNUC_UNUSED, | |
586 | QCryptoTLSSessionReadFunc readFunc G_GNUC_UNUSED, | |
587 | void *opaque G_GNUC_UNUSED) | |
588 | { | |
589 | } | |
590 | ||
591 | ||
592 | ssize_t | |
593 | qcrypto_tls_session_write(QCryptoTLSSession *sess, | |
594 | const char *buf, | |
595 | size_t len) | |
596 | { | |
597 | errno = -EIO; | |
598 | return -1; | |
599 | } | |
600 | ||
601 | ||
602 | ssize_t | |
603 | qcrypto_tls_session_read(QCryptoTLSSession *sess, | |
604 | char *buf, | |
605 | size_t len) | |
606 | { | |
607 | errno = -EIO; | |
608 | return -1; | |
609 | } | |
610 | ||
611 | ||
612 | int | |
613 | qcrypto_tls_session_handshake(QCryptoTLSSession *sess, | |
614 | Error **errp) | |
615 | { | |
616 | error_setg(errp, "TLS requires GNUTLS support"); | |
617 | return -1; | |
618 | } | |
619 | ||
620 | ||
621 | QCryptoTLSSessionHandshakeStatus | |
622 | qcrypto_tls_session_get_handshake_status(QCryptoTLSSession *sess) | |
623 | { | |
624 | return QCRYPTO_TLS_HANDSHAKE_COMPLETE; | |
625 | } | |
626 | ||
627 | ||
628 | int | |
629 | qcrypto_tls_session_get_key_size(QCryptoTLSSession *sess, | |
630 | Error **errp) | |
631 | { | |
632 | error_setg(errp, "TLS requires GNUTLS support"); | |
633 | return -1; | |
634 | } | |
635 | ||
636 | ||
637 | char * | |
638 | qcrypto_tls_session_get_peer_name(QCryptoTLSSession *sess) | |
639 | { | |
640 | return NULL; | |
641 | } | |
642 | ||
643 | #endif |