2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "../ssl_locl.h"
12 #include "statem_locl.h"
14 static int final_renegotiate(SSL
*s
, unsigned int context
, int sent
,
16 static int init_server_name(SSL
*s
, unsigned int context
);
17 static int final_server_name(SSL
*s
, unsigned int context
, int sent
,
20 static int final_ec_pt_formats(SSL
*s
, unsigned int context
, int sent
,
23 static int init_session_ticket(SSL
*s
, unsigned int context
);
24 #ifndef OPENSSL_NO_OCSP
25 static int init_status_request(SSL
*s
, unsigned int context
);
27 #ifndef OPENSSL_NO_NEXTPROTONEG
28 static int init_npn(SSL
*s
, unsigned int context
);
30 static int init_alpn(SSL
*s
, unsigned int context
);
31 static int final_alpn(SSL
*s
, unsigned int context
, int sent
, int *al
);
32 static int init_sig_algs(SSL
*s
, unsigned int context
);
33 static int init_certificate_authorities(SSL
*s
, unsigned int context
);
34 static int tls_construct_certificate_authorities(SSL
*s
, WPACKET
*pkt
,
35 unsigned int context
, X509
*x
,
36 size_t chainidx
, int *al
);
37 static int tls_parse_certificate_authorities(SSL
*s
, PACKET
*pkt
,
38 unsigned int context
, X509
*x
,
39 size_t chainidx
, int *al
);
40 #ifndef OPENSSL_NO_SRP
41 static int init_srp(SSL
*s
, unsigned int context
);
43 static int init_etm(SSL
*s
, unsigned int context
);
44 static int init_ems(SSL
*s
, unsigned int context
);
45 static int final_ems(SSL
*s
, unsigned int context
, int sent
, int *al
);
46 static int init_psk_kex_modes(SSL
*s
, unsigned int context
);
48 static int final_key_share(SSL
*s
, unsigned int context
, int sent
, int *al
);
50 #ifndef OPENSSL_NO_SRTP
51 static int init_srtp(SSL
*s
, unsigned int context
);
53 static int final_sig_algs(SSL
*s
, unsigned int context
, int sent
, int *al
);
54 static int final_early_data(SSL
*s
, unsigned int context
, int sent
, int *al
);
56 /* Structure to define a built-in extension */
57 typedef struct extensions_definition_st
{
58 /* The defined type for the extension */
61 * The context that this extension applies to, e.g. what messages and
66 * Initialise extension before parsing. Always called for relevant contexts
67 * even if extension not present
69 int (*init
)(SSL
*s
, unsigned int context
);
70 /* Parse extension sent from client to server */
71 int (*parse_ctos
)(SSL
*s
, PACKET
*pkt
, unsigned int context
, X509
*x
,
72 size_t chainidx
, int *al
);
73 /* Parse extension send from server to client */
74 int (*parse_stoc
)(SSL
*s
, PACKET
*pkt
, unsigned int context
, X509
*x
,
75 size_t chainidx
, int *al
);
76 /* Construct extension sent from server to client */
77 int (*construct_stoc
)(SSL
*s
, WPACKET
*pkt
, unsigned int context
, X509
*x
,
78 size_t chainidx
, int *al
);
79 /* Construct extension sent from client to server */
80 int (*construct_ctos
)(SSL
*s
, WPACKET
*pkt
, unsigned int context
, X509
*x
,
81 size_t chainidx
, int *al
);
83 * Finalise extension after parsing. Always called where an extensions was
84 * initialised even if the extension was not present. |sent| is set to 1 if
85 * the extension was seen, or 0 otherwise.
87 int (*final
)(SSL
*s
, unsigned int context
, int sent
, int *al
);
88 } EXTENSION_DEFINITION
;
91 * Definitions of all built-in extensions. NOTE: Changes in the number or order
92 * of these extensions should be mirrored with equivalent changes to the
93 * indexes ( TLSEXT_IDX_* ) defined in ssl_locl.h.
94 * Each extension has an initialiser, a client and
95 * server side parser and a finaliser. The initialiser is called (if the
96 * extension is relevant to the given context) even if we did not see the
97 * extension in the message that we received. The parser functions are only
98 * called if we see the extension in the message. The finalisers are always
99 * called if the initialiser was called.
100 * There are also server and client side constructor functions which are always
101 * called during message construction if the extension is relevant for the
103 * The initialisation, parsing, finalisation and construction functions are
104 * always called in the order defined in this list. Some extensions may depend
105 * on others having been processed first, so the order of this list is
107 * The extension context is defined by a series of flags which specify which
108 * messages the extension is relevant to. These flags also specify whether the
109 * extension is relevant to a particular protocol or protocol version.
111 * TODO(TLS1.3): Make sure we have a test to check the consistency of these
113 #define INVALID_EXTENSION { 0x10000, 0, NULL, NULL, NULL, NULL, NULL, NULL }
114 static const EXTENSION_DEFINITION ext_defs
[] = {
116 TLSEXT_TYPE_renegotiate
,
117 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
118 | SSL_EXT_SSL3_ALLOWED
| SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
119 NULL
, tls_parse_ctos_renegotiate
, tls_parse_stoc_renegotiate
,
120 tls_construct_stoc_renegotiate
, tls_construct_ctos_renegotiate
,
124 TLSEXT_TYPE_server_name
,
125 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
126 | SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
,
128 tls_parse_ctos_server_name
, tls_parse_stoc_server_name
,
129 tls_construct_stoc_server_name
, tls_construct_ctos_server_name
,
132 #ifndef OPENSSL_NO_SRP
135 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
136 init_srp
, tls_parse_ctos_srp
, NULL
, NULL
, tls_construct_ctos_srp
, NULL
141 #ifndef OPENSSL_NO_EC
143 TLSEXT_TYPE_ec_point_formats
,
144 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
145 | SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
146 NULL
, tls_parse_ctos_ec_pt_formats
, tls_parse_stoc_ec_pt_formats
,
147 tls_construct_stoc_ec_pt_formats
, tls_construct_ctos_ec_pt_formats
,
151 TLSEXT_TYPE_supported_groups
,
152 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
,
153 NULL
, tls_parse_ctos_supported_groups
, NULL
,
154 NULL
/* TODO(TLS1.3): Need to add this */,
155 tls_construct_ctos_supported_groups
, NULL
162 TLSEXT_TYPE_session_ticket
,
163 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
164 | SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
165 init_session_ticket
, tls_parse_ctos_session_ticket
,
166 tls_parse_stoc_session_ticket
, tls_construct_stoc_session_ticket
,
167 tls_construct_ctos_session_ticket
, NULL
170 TLSEXT_TYPE_signature_algorithms
,
171 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_CERTIFICATE_REQUEST
,
172 init_sig_algs
, tls_parse_ctos_sig_algs
,
173 tls_parse_ctos_sig_algs
, tls_construct_ctos_sig_algs
,
174 tls_construct_ctos_sig_algs
, final_sig_algs
176 #ifndef OPENSSL_NO_OCSP
178 TLSEXT_TYPE_status_request
,
179 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
180 | SSL_EXT_TLS1_3_CERTIFICATE
,
181 init_status_request
, tls_parse_ctos_status_request
,
182 tls_parse_stoc_status_request
, tls_construct_stoc_status_request
,
183 tls_construct_ctos_status_request
, NULL
188 #ifndef OPENSSL_NO_NEXTPROTONEG
190 TLSEXT_TYPE_next_proto_neg
,
191 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
192 | SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
193 init_npn
, tls_parse_ctos_npn
, tls_parse_stoc_npn
,
194 tls_construct_stoc_next_proto_neg
, tls_construct_ctos_npn
, NULL
201 * Must appear in this list after server_name so that finalisation
202 * happens after server_name callbacks
204 TLSEXT_TYPE_application_layer_protocol_negotiation
,
205 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
206 | SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
,
207 init_alpn
, tls_parse_ctos_alpn
, tls_parse_stoc_alpn
,
208 tls_construct_stoc_alpn
, tls_construct_ctos_alpn
, final_alpn
210 #ifndef OPENSSL_NO_SRTP
212 TLSEXT_TYPE_use_srtp
,
213 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
214 | SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
| SSL_EXT_DTLS_ONLY
,
215 init_srtp
, tls_parse_ctos_use_srtp
, tls_parse_stoc_use_srtp
,
216 tls_construct_stoc_use_srtp
, tls_construct_ctos_use_srtp
, NULL
222 TLSEXT_TYPE_encrypt_then_mac
,
223 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
224 | SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
225 init_etm
, tls_parse_ctos_etm
, tls_parse_stoc_etm
,
226 tls_construct_stoc_etm
, tls_construct_ctos_etm
, NULL
228 #ifndef OPENSSL_NO_CT
230 TLSEXT_TYPE_signed_certificate_timestamp
,
231 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
232 | SSL_EXT_TLS1_3_CERTIFICATE
,
235 * No server side support for this, but can be provided by a custom
236 * extension. This is an exception to the rule that custom extensions
237 * cannot override built in ones.
239 NULL
, tls_parse_stoc_sct
, NULL
, tls_construct_ctos_sct
, NULL
245 TLSEXT_TYPE_extended_master_secret
,
246 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
247 | SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
248 init_ems
, tls_parse_ctos_ems
, tls_parse_stoc_ems
,
249 tls_construct_stoc_ems
, tls_construct_ctos_ems
, final_ems
252 TLSEXT_TYPE_supported_versions
,
253 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS_IMPLEMENTATION_ONLY
254 | SSL_EXT_TLS1_3_ONLY
,
256 /* Processed inline as part of version selection */
257 NULL
, NULL
, NULL
, tls_construct_ctos_supported_versions
, NULL
260 TLSEXT_TYPE_psk_kex_modes
,
261 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS_IMPLEMENTATION_ONLY
262 | SSL_EXT_TLS1_3_ONLY
,
263 init_psk_kex_modes
, tls_parse_ctos_psk_kex_modes
, NULL
, NULL
,
264 tls_construct_ctos_psk_kex_modes
, NULL
266 #ifndef OPENSSL_NO_EC
269 * Must be in this list after supported_groups. We need that to have
270 * been parsed before we do this one.
272 TLSEXT_TYPE_key_share
,
273 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_SERVER_HELLO
274 | SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST
| SSL_EXT_TLS_IMPLEMENTATION_ONLY
275 | SSL_EXT_TLS1_3_ONLY
,
276 NULL
, tls_parse_ctos_key_share
, tls_parse_stoc_key_share
,
277 tls_construct_stoc_key_share
, tls_construct_ctos_key_share
,
283 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST
284 | SSL_EXT_TLS_IMPLEMENTATION_ONLY
| SSL_EXT_TLS1_3_ONLY
,
285 NULL
, NULL
, tls_parse_stoc_cookie
, NULL
, tls_construct_ctos_cookie
,
290 * Special unsolicited ServerHello extension only used when
291 * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set
293 TLSEXT_TYPE_cryptopro_bug
,
294 SSL_EXT_TLS1_2_SERVER_HELLO
| SSL_EXT_TLS1_2_AND_BELOW_ONLY
,
295 NULL
, NULL
, NULL
, tls_construct_stoc_cryptopro_bug
, NULL
, NULL
298 TLSEXT_TYPE_early_data
,
299 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS
300 | SSL_EXT_TLS1_3_NEW_SESSION_TICKET
,
301 NULL
, tls_parse_ctos_early_data
, tls_parse_stoc_early_data
,
302 tls_construct_stoc_early_data
, tls_construct_ctos_early_data
,
306 TLSEXT_TYPE_certificate_authorities
,
307 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_CERTIFICATE_REQUEST
308 | SSL_EXT_TLS1_3_ONLY
,
309 init_certificate_authorities
,
310 tls_parse_certificate_authorities
, tls_parse_certificate_authorities
,
311 tls_construct_certificate_authorities
,
312 tls_construct_certificate_authorities
, NULL
,
315 /* Must be immediately before pre_shared_key */
317 SSL_EXT_CLIENT_HELLO
,
319 /* We send this, but don't read it */
320 NULL
, NULL
, NULL
, tls_construct_ctos_padding
, NULL
323 /* Required by the TLSv1.3 spec to always be the last extension */
325 SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_3_SERVER_HELLO
326 | SSL_EXT_TLS_IMPLEMENTATION_ONLY
| SSL_EXT_TLS1_3_ONLY
,
327 NULL
, tls_parse_ctos_psk
, tls_parse_stoc_psk
, tls_construct_stoc_psk
,
328 tls_construct_ctos_psk
, NULL
332 /* Check whether an extension's context matches the current context */
333 static int validate_context(SSL
*s
, unsigned int extctx
, unsigned int thisctx
)
335 /* Check we're allowed to use this extension in this context */
336 if ((thisctx
& extctx
) == 0)
339 if (SSL_IS_DTLS(s
)) {
340 if ((extctx
& SSL_EXT_TLS_ONLY
) != 0)
342 } else if ((extctx
& SSL_EXT_DTLS_ONLY
) != 0) {
350 * Verify whether we are allowed to use the extension |type| in the current
351 * |context|. Returns 1 to indicate the extension is allowed or unknown or 0 to
352 * indicate the extension is not allowed. If returning 1 then |*found| is set to
353 * the definition for the extension we found.
355 static int verify_extension(SSL
*s
, unsigned int context
, unsigned int type
,
356 custom_ext_methods
*meths
, RAW_EXTENSION
*rawexlist
,
357 RAW_EXTENSION
**found
)
360 size_t builtin_num
= OSSL_NELEM(ext_defs
);
361 const EXTENSION_DEFINITION
*thisext
;
363 for (i
= 0, thisext
= ext_defs
; i
< builtin_num
; i
++, thisext
++) {
364 if (type
== thisext
->type
) {
365 if (!validate_context(s
, thisext
->context
, context
))
368 *found
= &rawexlist
[i
];
373 /* Check the custom extensions */
376 ENDPOINT role
= ENDPOINT_BOTH
;
377 custom_ext_method
*meth
= NULL
;
379 if ((context
& SSL_EXT_CLIENT_HELLO
) != 0)
380 role
= ENDPOINT_SERVER
;
381 else if ((context
& SSL_EXT_TLS1_2_SERVER_HELLO
) != 0)
382 role
= ENDPOINT_CLIENT
;
384 meth
= custom_ext_find(meths
, role
, type
, &offset
);
386 if (!validate_context(s
, meth
->context
, context
))
388 *found
= &rawexlist
[offset
+ builtin_num
];
393 /* Unknown extension. We allow it */
399 * Check whether the context defined for an extension |extctx| means whether
400 * the extension is relevant for the current context |thisctx| or not. Returns
401 * 1 if the extension is relevant for this context, and 0 otherwise
403 int extension_is_relevant(SSL
*s
, unsigned int extctx
, unsigned int thisctx
)
406 && (extctx
& SSL_EXT_TLS_IMPLEMENTATION_ONLY
) != 0)
407 || (s
->version
== SSL3_VERSION
408 && (extctx
& SSL_EXT_SSL3_ALLOWED
) == 0)
410 && (extctx
& SSL_EXT_TLS1_2_AND_BELOW_ONLY
) != 0)
411 || (!SSL_IS_TLS13(s
) && (extctx
& SSL_EXT_TLS1_3_ONLY
) != 0)
412 || (s
->hit
&& (extctx
& SSL_EXT_IGNORE_ON_RESUMPTION
) != 0))
419 * Gather a list of all the extensions from the data in |packet]. |context|
420 * tells us which message this extension is for. The raw extension data is
421 * stored in |*res| on success. In the event of an error the alert type to use
422 * is stored in |*al|. We don't actually process the content of the extensions
423 * yet, except to check their types. This function also runs the initialiser
424 * functions for all known extensions (whether we have collected them or not).
425 * If successful the caller is responsible for freeing the contents of |*res|.
427 * Per http://tools.ietf.org/html/rfc5246#section-7.4.1.4, there may not be
428 * more than one extension of the same type in a ClientHello or ServerHello.
429 * This function returns 1 if all extensions are unique and we have parsed their
430 * types, and 0 if the extensions contain duplicates, could not be successfully
431 * found, or an internal error occurred. We only check duplicates for
432 * extensions that we know about. We ignore others.
434 int tls_collect_extensions(SSL
*s
, PACKET
*packet
, unsigned int context
,
435 RAW_EXTENSION
**res
, int *al
, size_t *len
)
437 PACKET extensions
= *packet
;
440 custom_ext_methods
*exts
= &s
->cert
->custext
;
441 RAW_EXTENSION
*raw_extensions
= NULL
;
442 const EXTENSION_DEFINITION
*thisexd
;
447 * Initialise server side custom extensions. Client side is done during
448 * construction of extensions for the ClientHello.
450 if ((context
& SSL_EXT_CLIENT_HELLO
) != 0)
451 custom_ext_init(&s
->cert
->custext
);
453 num_exts
= OSSL_NELEM(ext_defs
) + (exts
!= NULL
? exts
->meths_count
: 0);
454 raw_extensions
= OPENSSL_zalloc(num_exts
* sizeof(*raw_extensions
));
455 if (raw_extensions
== NULL
) {
456 *al
= SSL_AD_INTERNAL_ERROR
;
457 SSLerr(SSL_F_TLS_COLLECT_EXTENSIONS
, ERR_R_MALLOC_FAILURE
);
461 while (PACKET_remaining(&extensions
) > 0) {
464 RAW_EXTENSION
*thisex
;
466 if (!PACKET_get_net_2(&extensions
, &type
) ||
467 !PACKET_get_length_prefixed_2(&extensions
, &extension
)) {
468 SSLerr(SSL_F_TLS_COLLECT_EXTENSIONS
, SSL_R_BAD_EXTENSION
);
469 *al
= SSL_AD_DECODE_ERROR
;
473 * Verify this extension is allowed. We only check duplicates for
474 * extensions that we recognise. We also have a special case for the
475 * PSK extension, which must be the last one in the ClientHello.
477 if (!verify_extension(s
, context
, type
, exts
, raw_extensions
, &thisex
)
478 || (thisex
!= NULL
&& thisex
->present
== 1)
479 || (type
== TLSEXT_TYPE_psk
480 && (context
& SSL_EXT_CLIENT_HELLO
) != 0
481 && PACKET_remaining(&extensions
) != 0)) {
482 SSLerr(SSL_F_TLS_COLLECT_EXTENSIONS
, SSL_R_BAD_EXTENSION
);
483 *al
= SSL_AD_ILLEGAL_PARAMETER
;
486 if (thisex
!= NULL
) {
487 thisex
->data
= extension
;
494 * Initialise all known extensions relevant to this context, whether we have
497 for (thisexd
= ext_defs
, i
= 0; i
< OSSL_NELEM(ext_defs
); i
++, thisexd
++) {
498 if(thisexd
->init
!= NULL
&& (thisexd
->context
& context
) != 0
499 && extension_is_relevant(s
, thisexd
->context
, context
)
500 && !thisexd
->init(s
, context
)) {
501 *al
= SSL_AD_INTERNAL_ERROR
;
506 *res
= raw_extensions
;
512 OPENSSL_free(raw_extensions
);
517 * Runs the parser for a given extension with index |idx|. |exts| contains the
518 * list of all parsed extensions previously collected by
519 * tls_collect_extensions(). The parser is only run if it is applicable for the
520 * given |context| and the parser has not already been run. If this is for a
521 * Certificate message, then we also provide the parser with the relevant
522 * Certificate |x| and its position in the |chainidx| with 0 being the first
523 * Certificate. Returns 1 on success or 0 on failure. In the event of a failure
524 * |*al| is populated with a suitable alert code. If an extension is not present
525 * this counted as success.
527 int tls_parse_extension(SSL
*s
, TLSEXT_INDEX idx
, int context
,
528 RAW_EXTENSION
*exts
, X509
*x
, size_t chainidx
, int *al
)
530 RAW_EXTENSION
*currext
= &exts
[idx
];
531 int (*parser
)(SSL
*s
, PACKET
*pkt
, unsigned int context
, X509
*x
,
532 size_t chainidx
, int *al
) = NULL
;
534 /* Skip if the extension is not present */
535 if (!currext
->present
)
539 s
->ext
.debug_cb(s
, !s
->server
, currext
->type
,
540 PACKET_data(&currext
->data
),
541 PACKET_remaining(&currext
->data
),
544 /* Skip if we've already parsed this extension */
550 if (idx
< OSSL_NELEM(ext_defs
)) {
551 /* We are handling a built-in extension */
552 const EXTENSION_DEFINITION
*extdef
= &ext_defs
[idx
];
554 /* Check if extension is defined for our protocol. If not, skip */
555 if (!extension_is_relevant(s
, extdef
->context
, context
))
558 parser
= s
->server
? extdef
->parse_ctos
: extdef
->parse_stoc
;
561 return parser(s
, &currext
->data
, context
, x
, chainidx
, al
);
564 * If the parser is NULL we fall through to the custom extension
569 /* Parse custom extensions */
570 if (custom_ext_parse(s
, context
, currext
->type
,
571 PACKET_data(&currext
->data
),
572 PACKET_remaining(&currext
->data
),
573 x
, chainidx
, al
) <= 0)
580 * Parse all remaining extensions that have not yet been parsed. Also calls the
581 * finalisation for all extensions at the end, whether we collected them or not.
582 * Returns 1 for success or 0 for failure. If we are working on a Certificate
583 * message then we also pass the Certificate |x| and its position in the
584 * |chainidx|, with 0 being the first certificate. On failure, |*al| is
585 * populated with a suitable alert code.
587 int tls_parse_all_extensions(SSL
*s
, int context
, RAW_EXTENSION
*exts
, X509
*x
,
588 size_t chainidx
, int *al
)
590 size_t i
, numexts
= OSSL_NELEM(ext_defs
);
591 const EXTENSION_DEFINITION
*thisexd
;
593 /* Calculate the number of extensions in the extensions list */
594 numexts
+= s
->cert
->custext
.meths_count
;
596 /* Parse each extension in turn */
597 for (i
= 0; i
< numexts
; i
++) {
598 if (!tls_parse_extension(s
, i
, context
, exts
, x
, chainidx
, al
))
603 * Finalise all known extensions relevant to this context, whether we have
606 for (i
= 0, thisexd
= ext_defs
; i
< OSSL_NELEM(ext_defs
); i
++, thisexd
++) {
607 if(thisexd
->final
!= NULL
608 && (thisexd
->context
& context
) != 0
609 && !thisexd
->final(s
, context
, exts
[i
].present
, al
))
616 int should_add_extension(SSL
*s
, unsigned int extctx
, unsigned int thisctx
,
619 /* Skip if not relevant for our context */
620 if ((extctx
& thisctx
) == 0)
623 /* Check if this extension is defined for our protocol. If not, skip */
624 if ((SSL_IS_DTLS(s
) && (extctx
& SSL_EXT_TLS_IMPLEMENTATION_ONLY
) != 0)
625 || (s
->version
== SSL3_VERSION
626 && (extctx
& SSL_EXT_SSL3_ALLOWED
) == 0)
628 && (extctx
& SSL_EXT_TLS1_2_AND_BELOW_ONLY
) != 0)
630 && (extctx
& SSL_EXT_TLS1_3_ONLY
) != 0
631 && (thisctx
& SSL_EXT_CLIENT_HELLO
) == 0)
632 || ((extctx
& SSL_EXT_TLS1_3_ONLY
) != 0
633 && (thisctx
& SSL_EXT_CLIENT_HELLO
) != 0
634 && (SSL_IS_DTLS(s
) || max_version
< TLS1_3_VERSION
)))
641 * Construct all the extensions relevant to the current |context| and write
642 * them to |pkt|. If this is an extension for a Certificate in a Certificate
643 * message, then |x| will be set to the Certificate we are handling, and
644 * |chainidx| will indicate the position in the chainidx we are processing (with
645 * 0 being the first in the chain). Returns 1 on success or 0 on failure. If a
646 * failure occurs then |al| is populated with a suitable alert code. On a
647 * failure construction stops at the first extension to fail to construct.
649 int tls_construct_extensions(SSL
*s
, WPACKET
*pkt
, unsigned int context
,
650 X509
*x
, size_t chainidx
, int *al
)
653 int min_version
, max_version
= 0, reason
, tmpal
;
654 const EXTENSION_DEFINITION
*thisexd
;
657 * Normally if something goes wrong during construction it's an internal
658 * error. We can always override this later.
660 tmpal
= SSL_AD_INTERNAL_ERROR
;
662 if (!WPACKET_start_sub_packet_u16(pkt
)
664 * If extensions are of zero length then we don't even add the
665 * extensions length bytes to a ClientHello/ServerHello in SSLv3
668 (SSL_EXT_CLIENT_HELLO
| SSL_EXT_TLS1_2_SERVER_HELLO
)) != 0
669 && s
->version
== SSL3_VERSION
670 && !WPACKET_set_flags(pkt
,
671 WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH
))) {
672 SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS
, ERR_R_INTERNAL_ERROR
);
676 if ((context
& SSL_EXT_CLIENT_HELLO
) != 0) {
677 reason
= ssl_get_min_max_version(s
, &min_version
, &max_version
);
679 SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS
, reason
);
684 /* Add custom extensions first */
685 if ((context
& SSL_EXT_CLIENT_HELLO
) != 0) {
686 /* On the server side with initiase during ClientHello parsing */
687 custom_ext_init(&s
->cert
->custext
);
689 if (!custom_ext_add(s
, context
, pkt
, x
, chainidx
, max_version
, &tmpal
)) {
690 SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS
, ERR_R_INTERNAL_ERROR
);
694 for (i
= 0, thisexd
= ext_defs
; i
< OSSL_NELEM(ext_defs
); i
++, thisexd
++) {
695 int (*construct
)(SSL
*s
, WPACKET
*pkt
, unsigned int context
, X509
*x
,
696 size_t chainidx
, int *al
);
698 /* Skip if not relevant for our context */
699 if (!should_add_extension(s
, thisexd
->context
, context
, max_version
))
702 construct
= s
->server
? thisexd
->construct_stoc
703 : thisexd
->construct_ctos
;
705 if (construct
== NULL
)
708 if (!construct(s
, pkt
, context
, x
, chainidx
, &tmpal
))
712 if (!WPACKET_close(pkt
)) {
713 SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS
, ERR_R_INTERNAL_ERROR
);
725 * Built in extension finalisation and initialisation functions. All initialise
726 * or finalise the associated extension type for the given |context|. For
727 * finalisers |sent| is set to 1 if we saw the extension during parsing, and 0
728 * otherwise. These functions return 1 on success or 0 on failure. In the event
729 * of a failure then |*al| is populated with a suitable error code.
732 static int final_renegotiate(SSL
*s
, unsigned int context
, int sent
,
737 * Check if we can connect to a server that doesn't support safe
740 if (!(s
->options
& SSL_OP_LEGACY_SERVER_CONNECT
)
741 && !(s
->options
& SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
)
743 *al
= SSL_AD_HANDSHAKE_FAILURE
;
744 SSLerr(SSL_F_FINAL_RENEGOTIATE
,
745 SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED
);
752 /* Need RI if renegotiating */
754 && !(s
->options
& SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
)
756 *al
= SSL_AD_HANDSHAKE_FAILURE
;
757 SSLerr(SSL_F_FINAL_RENEGOTIATE
,
758 SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED
);
766 static int init_server_name(SSL
*s
, unsigned int context
)
769 s
->servername_done
= 0;
774 static int final_server_name(SSL
*s
, unsigned int context
, int sent
,
777 int ret
= SSL_TLSEXT_ERR_NOACK
;
778 int altmp
= SSL_AD_UNRECOGNIZED_NAME
;
780 if (s
->ctx
!= NULL
&& s
->ctx
->ext
.servername_cb
!= 0)
781 ret
= s
->ctx
->ext
.servername_cb(s
, &altmp
,
782 s
->ctx
->ext
.servername_arg
);
783 else if (s
->session_ctx
!= NULL
784 && s
->session_ctx
->ext
.servername_cb
!= 0)
785 ret
= s
->session_ctx
->ext
.servername_cb(s
, &altmp
,
786 s
->session_ctx
->ext
.servername_arg
);
789 case SSL_TLSEXT_ERR_ALERT_FATAL
:
793 case SSL_TLSEXT_ERR_ALERT_WARNING
:
797 case SSL_TLSEXT_ERR_NOACK
:
798 s
->servername_done
= 0;
806 #ifndef OPENSSL_NO_EC
807 static int final_ec_pt_formats(SSL
*s
, unsigned int context
, int sent
,
810 unsigned long alg_k
, alg_a
;
815 alg_k
= s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
816 alg_a
= s
->s3
->tmp
.new_cipher
->algorithm_auth
;
819 * If we are client and using an elliptic curve cryptography cipher
820 * suite, then if server returns an EC point formats lists extension it
821 * must contain uncompressed.
823 if (s
->ext
.ecpointformats
!= NULL
824 && s
->ext
.ecpointformats_len
> 0
825 && s
->session
->ext
.ecpointformats
!= NULL
826 && s
->session
->ext
.ecpointformats_len
> 0
827 && ((alg_k
& SSL_kECDHE
) || (alg_a
& SSL_aECDSA
))) {
828 /* we are using an ECC cipher */
830 unsigned char *list
= s
->session
->ext
.ecpointformats
;
832 for (i
= 0; i
< s
->session
->ext
.ecpointformats_len
; i
++) {
833 if (*list
++ == TLSEXT_ECPOINTFORMAT_uncompressed
)
836 if (i
== s
->session
->ext
.ecpointformats_len
) {
837 SSLerr(SSL_F_FINAL_EC_PT_FORMATS
,
838 SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST
);
847 static int init_session_ticket(SSL
*s
, unsigned int context
)
850 s
->ext
.ticket_expected
= 0;
855 #ifndef OPENSSL_NO_OCSP
856 static int init_status_request(SSL
*s
, unsigned int context
)
859 s
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
862 * Ensure we get sensible values passed to tlsext_status_cb in the event
863 * that we don't receive a status message
865 OPENSSL_free(s
->ext
.ocsp
.resp
);
866 s
->ext
.ocsp
.resp
= NULL
;
867 s
->ext
.ocsp
.resp_len
= 0;
874 #ifndef OPENSSL_NO_NEXTPROTONEG
875 static int init_npn(SSL
*s
, unsigned int context
)
883 static int init_alpn(SSL
*s
, unsigned int context
)
885 OPENSSL_free(s
->s3
->alpn_selected
);
886 s
->s3
->alpn_selected
= NULL
;
887 s
->s3
->alpn_selected_len
= 0;
889 OPENSSL_free(s
->s3
->alpn_proposed
);
890 s
->s3
->alpn_proposed
= NULL
;
891 s
->s3
->alpn_proposed_len
= 0;
896 static int final_alpn(SSL
*s
, unsigned int context
, int sent
, int *al
)
898 const unsigned char *selected
= NULL
;
899 unsigned char selected_len
= 0;
904 if (s
->ctx
->ext
.alpn_select_cb
!= NULL
&& s
->s3
->alpn_proposed
!= NULL
) {
905 int r
= s
->ctx
->ext
.alpn_select_cb(s
, &selected
, &selected_len
,
906 s
->s3
->alpn_proposed
,
907 (unsigned int)s
->s3
->alpn_proposed_len
,
908 s
->ctx
->ext
.alpn_select_cb_arg
);
910 if (r
== SSL_TLSEXT_ERR_OK
) {
911 OPENSSL_free(s
->s3
->alpn_selected
);
912 s
->s3
->alpn_selected
= OPENSSL_memdup(selected
, selected_len
);
913 if (s
->s3
->alpn_selected
== NULL
) {
914 *al
= SSL_AD_INTERNAL_ERROR
;
917 s
->s3
->alpn_selected_len
= selected_len
;
918 #ifndef OPENSSL_NO_NEXTPROTONEG
919 /* ALPN takes precedence over NPN. */
922 } else if (r
== SSL_TLSEXT_ERR_NOACK
) {
923 /* Behave as if no callback was present. */
926 *al
= SSL_AD_NO_APPLICATION_PROTOCOL
;
934 static int init_sig_algs(SSL
*s
, unsigned int context
)
936 /* Clear any signature algorithms extension received */
937 OPENSSL_free(s
->s3
->tmp
.peer_sigalgs
);
938 s
->s3
->tmp
.peer_sigalgs
= NULL
;
943 #ifndef OPENSSL_NO_SRP
944 static int init_srp(SSL
*s
, unsigned int context
)
946 OPENSSL_free(s
->srp_ctx
.login
);
947 s
->srp_ctx
.login
= NULL
;
953 static int init_etm(SSL
*s
, unsigned int context
)
960 static int init_ems(SSL
*s
, unsigned int context
)
963 s
->s3
->flags
&= ~TLS1_FLAGS_RECEIVED_EXTMS
;
968 static int final_ems(SSL
*s
, unsigned int context
, int sent
, int *al
)
970 if (!s
->server
&& s
->hit
) {
972 * Check extended master secret extension is consistent with
975 if (!(s
->s3
->flags
& TLS1_FLAGS_RECEIVED_EXTMS
) !=
976 !(s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)) {
977 *al
= SSL_AD_HANDSHAKE_FAILURE
;
978 SSLerr(SSL_F_FINAL_EMS
, SSL_R_INCONSISTENT_EXTMS
);
986 static int init_certificate_authorities(SSL
*s
, unsigned int context
)
988 sk_X509_NAME_pop_free(s
->s3
->tmp
.peer_ca_names
, X509_NAME_free
);
989 s
->s3
->tmp
.peer_ca_names
= NULL
;
993 static int tls_construct_certificate_authorities(SSL
*s
, WPACKET
*pkt
,
994 unsigned int context
, X509
*x
,
995 size_t chainidx
, int *al
)
997 const STACK_OF(X509_NAME
) *ca_sk
= SSL_get0_CA_list(s
);
999 if (ca_sk
== NULL
|| sk_X509_NAME_num(ca_sk
) == 0)
1002 if (!WPACKET_put_bytes_u16(pkt
, TLSEXT_TYPE_certificate_authorities
)
1003 || !WPACKET_start_sub_packet_u16(pkt
)
1004 || !construct_ca_names(s
, pkt
)
1005 || !WPACKET_close(pkt
)) {
1006 SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_AUTHORITIES
,
1007 ERR_R_INTERNAL_ERROR
);
1014 static int tls_parse_certificate_authorities(SSL
*s
, PACKET
*pkt
,
1015 unsigned int context
, X509
*x
,
1016 size_t chainidx
, int *al
)
1018 if (!parse_ca_names(s
, pkt
, al
))
1020 if (PACKET_remaining(pkt
) != 0) {
1021 *al
= SSL_AD_DECODE_ERROR
;
1027 #ifndef OPENSSL_NO_SRTP
1028 static int init_srtp(SSL
*s
, unsigned int context
)
1031 s
->srtp_profile
= NULL
;
1037 static int final_sig_algs(SSL
*s
, unsigned int context
, int sent
, int *al
)
1039 if (!sent
&& SSL_IS_TLS13(s
)) {
1040 *al
= TLS13_AD_MISSING_EXTENSION
;
1041 SSLerr(SSL_F_FINAL_SIG_ALGS
, SSL_R_MISSING_SIGALGS_EXTENSION
);
1048 #ifndef OPENSSL_NO_EC
1049 static int final_key_share(SSL
*s
, unsigned int context
, int sent
, int *al
)
1051 if (!SSL_IS_TLS13(s
))
1058 * we have no key_share
1060 * (we are not resuming
1061 * OR the kex_mode doesn't allow non key_share resumes)
1068 || (s
->ext
.psk_kex_mode
& TLSEXT_KEX_MODE_FLAG_KE
) == 0)) {
1069 /* Nothing left we can do - just fail */
1070 *al
= SSL_AD_HANDSHAKE_FAILURE
;
1071 SSLerr(SSL_F_FINAL_KEY_SHARE
, SSL_R_NO_SUITABLE_KEY_SHARE
);
1078 * we have no key_share
1081 * we didn't already send a HelloRetryRequest
1083 * the client sent a key_share extension
1085 * (we are not resuming
1086 * OR the kex_mode allows key_share resumes)
1088 * a shared group exists
1090 * send a HelloRetryRequest
1092 * we are not resuming
1094 * the kex_mode doesn't allow non key_share resumes
1098 if (s
->server
&& s
->s3
->peer_tmp
== NULL
) {
1099 /* No suitable share */
1100 if (s
->hello_retry_request
== 0 && sent
1102 || (s
->ext
.psk_kex_mode
& TLSEXT_KEX_MODE_FLAG_KE_DHE
)
1104 const unsigned char *pcurves
, *pcurvestmp
, *clntcurves
;
1105 size_t num_curves
, clnt_num_curves
, i
;
1106 unsigned int group_id
= 0;
1108 /* Check if a shared group exists */
1110 /* Get the clients list of supported groups. */
1111 if (!tls1_get_curvelist(s
, 1, &clntcurves
, &clnt_num_curves
)) {
1112 *al
= SSL_AD_INTERNAL_ERROR
;
1113 SSLerr(SSL_F_FINAL_KEY_SHARE
, ERR_R_INTERNAL_ERROR
);
1117 /* Get our list of available groups */
1118 if (!tls1_get_curvelist(s
, 0, &pcurves
, &num_curves
)) {
1119 *al
= SSL_AD_INTERNAL_ERROR
;
1120 SSLerr(SSL_F_FINAL_KEY_SHARE
, ERR_R_INTERNAL_ERROR
);
1124 /* Find the first group we allow that is also in client's list */
1125 for (i
= 0, pcurvestmp
= pcurves
; i
< num_curves
;
1126 i
++, pcurvestmp
+= 2) {
1127 group_id
= bytestogroup(pcurvestmp
);
1129 if (check_in_list(s
, group_id
, clntcurves
, clnt_num_curves
, 1))
1133 if (i
< num_curves
) {
1134 /* A shared group exists so send a HelloRetryRequest */
1135 s
->s3
->group_id
= group_id
;
1136 s
->hello_retry_request
= 1;
1141 || (s
->ext
.psk_kex_mode
& TLSEXT_KEX_MODE_FLAG_KE
) == 0) {
1142 /* Nothing left we can do - just fail */
1143 *al
= SSL_AD_HANDSHAKE_FAILURE
;
1144 SSLerr(SSL_F_FINAL_KEY_SHARE
, SSL_R_NO_SUITABLE_KEY_SHARE
);
1149 /* We have a key_share so don't send any more HelloRetryRequest messages */
1151 s
->hello_retry_request
= 0;
1154 * For a client side resumption with no key_share we need to generate
1155 * the handshake secret (otherwise this is done during key_share
1158 if (!sent
&& !s
->server
&& !tls13_generate_handshake_secret(s
, NULL
, 0)) {
1159 *al
= SSL_AD_INTERNAL_ERROR
;
1160 SSLerr(SSL_F_FINAL_KEY_SHARE
, ERR_R_INTERNAL_ERROR
);
1168 static int init_psk_kex_modes(SSL
*s
, unsigned int context
)
1170 s
->ext
.psk_kex_mode
= TLSEXT_KEX_MODE_FLAG_NONE
;
1174 int tls_psk_do_binder(SSL
*s
, const EVP_MD
*md
, const unsigned char *msgstart
,
1175 size_t binderoffset
, const unsigned char *binderin
,
1176 unsigned char *binderout
,
1177 SSL_SESSION
*sess
, int sign
)
1179 EVP_PKEY
*mackey
= NULL
;
1180 EVP_MD_CTX
*mctx
= NULL
;
1181 unsigned char hash
[EVP_MAX_MD_SIZE
], binderkey
[EVP_MAX_MD_SIZE
];
1182 unsigned char finishedkey
[EVP_MAX_MD_SIZE
], tmpbinder
[EVP_MAX_MD_SIZE
];
1183 const char resumption_label
[] = "resumption psk binder key";
1184 size_t bindersize
, hashsize
= EVP_MD_size(md
);
1187 /* Generate the early_secret */
1188 if (!tls13_generate_secret(s
, md
, NULL
, sess
->master_key
,
1189 sess
->master_key_length
,
1190 (unsigned char *)&s
->early_secret
)) {
1191 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1196 * Create the handshake hash for the binder key...the messages so far are
1199 mctx
= EVP_MD_CTX_new();
1201 || EVP_DigestInit_ex(mctx
, md
, NULL
) <= 0
1202 || EVP_DigestFinal_ex(mctx
, hash
, NULL
) <= 0) {
1203 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1207 /* Generate the binder key */
1208 if (!tls13_hkdf_expand(s
, md
, s
->early_secret
,
1209 (unsigned char *)resumption_label
,
1210 sizeof(resumption_label
) - 1, hash
, binderkey
,
1212 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1216 /* Generate the finished key */
1217 if (!tls13_derive_finishedkey(s
, md
, binderkey
, finishedkey
, hashsize
)) {
1218 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1222 if (EVP_DigestInit_ex(mctx
, md
, NULL
) <= 0) {
1223 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1228 * Get a hash of the ClientHello up to the start of the binders. If we are
1229 * following a HelloRetryRequest then this includes the hash of the first
1230 * ClientHello and the HelloRetryRequest itself.
1232 if (s
->hello_retry_request
) {
1236 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
, &hdata
);
1237 if (hdatalen
<= 0) {
1238 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, SSL_R_BAD_HANDSHAKE_LENGTH
);
1243 * For servers the handshake buffer data will include the second
1244 * ClientHello - which we don't want - so we need to take that bit off.
1247 PACKET hashprefix
, msg
;
1249 /* Find how many bytes are left after the first two messages */
1250 if (!PACKET_buf_init(&hashprefix
, hdata
, hdatalen
)
1251 || !PACKET_forward(&hashprefix
, 1)
1252 || !PACKET_get_length_prefixed_3(&hashprefix
, &msg
)
1253 || !PACKET_forward(&hashprefix
, 1)
1254 || !PACKET_get_length_prefixed_3(&hashprefix
, &msg
)) {
1255 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1258 hdatalen
-= PACKET_remaining(&hashprefix
);
1261 if (EVP_DigestUpdate(mctx
, hdata
, hdatalen
) <= 0) {
1262 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1267 if (EVP_DigestUpdate(mctx
, msgstart
, binderoffset
) <= 0
1268 || EVP_DigestFinal_ex(mctx
, hash
, NULL
) <= 0) {
1269 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1273 mackey
= EVP_PKEY_new_mac_key(EVP_PKEY_HMAC
, NULL
, finishedkey
, hashsize
);
1274 if (mackey
== NULL
) {
1275 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1280 binderout
= tmpbinder
;
1282 bindersize
= hashsize
;
1283 if (EVP_DigestSignInit(mctx
, NULL
, md
, NULL
, mackey
) <= 0
1284 || EVP_DigestSignUpdate(mctx
, hash
, hashsize
) <= 0
1285 || EVP_DigestSignFinal(mctx
, binderout
, &bindersize
) <= 0
1286 || bindersize
!= hashsize
) {
1287 SSLerr(SSL_F_TLS_PSK_DO_BINDER
, ERR_R_INTERNAL_ERROR
);
1294 /* HMAC keys can't do EVP_DigestVerify* - use CRYPTO_memcmp instead */
1295 ret
= (CRYPTO_memcmp(binderin
, binderout
, hashsize
) == 0);
1299 OPENSSL_cleanse(binderkey
, sizeof(binderkey
));
1300 OPENSSL_cleanse(finishedkey
, sizeof(finishedkey
));
1301 EVP_PKEY_free(mackey
);
1302 EVP_MD_CTX_free(mctx
);
1307 static int final_early_data(SSL
*s
, unsigned int context
, int sent
, int *al
)
1309 if (!s
->server
|| !sent
)
1312 if (s
->max_early_data
== 0
1314 || s
->session
->ext
.tick_identity
!= 0
1315 || s
->early_data_state
!= SSL_EARLY_DATA_ACCEPTING
1316 || !s
->ext
.early_data_ok
1317 || s
->hello_retry_request
1318 || s
->s3
->alpn_selected_len
!= s
->session
->ext
.alpn_selected_len
1319 || (s
->s3
->alpn_selected_len
> 0
1320 && memcmp(s
->s3
->alpn_selected
, s
->session
->ext
.alpn_selected
,
1321 s
->s3
->alpn_selected_len
) != 0)) {
1322 s
->ext
.early_data
= SSL_EARLY_DATA_REJECTED
;
1324 s
->ext
.early_data
= SSL_EARLY_DATA_ACCEPTED
;
1326 if (!tls13_change_cipher_state(s
,
1327 SSL3_CC_EARLY
| SSL3_CHANGE_CIPHER_SERVER_READ
)) {
1328 *al
= SSL_AD_INTERNAL_ERROR
;