2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
113 #include <openssl/objects.h>
114 #include <openssl/evp.h>
115 #include <openssl/hmac.h>
116 #include <openssl/ocsp.h>
117 #include "ssl_locl.h"
119 const char tls1_version_str[]="TLSv1" OPENSSL_VERSION_PTEXT;
121 #ifndef OPENSSL_NO_TLSEXT
122 static int tls_decrypt_ticket(SSL *s, const unsigned char *tick, int ticklen,
123 const unsigned char *sess_id, int sesslen,
124 SSL_SESSION **psess);
127 SSL3_ENC_METHOD TLSv1_enc_data={
130 tls1_setup_key_block,
131 tls1_generate_master_secret,
132 tls1_change_cipher_state,
133 tls1_final_finish_mac,
134 TLS1_FINISH_MAC_LENGTH,
135 tls1_cert_verify_mac,
136 TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
137 TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
141 long tls1_default_timeout(void)
143 /* 2 hours, the 24 hours mentioned in the TLSv1 spec
144 * is way too long for http, the cache would over fill */
150 if (!ssl3_new(s)) return(0);
151 s->method->ssl_clear(s);
155 void tls1_free(SSL *s)
160 void tls1_clear(SSL *s)
163 s->version=TLS1_VERSION;
166 #ifndef OPENSSL_NO_EC
167 static int nid_list[] =
169 NID_sect163k1, /* sect163k1 (1) */
170 NID_sect163r1, /* sect163r1 (2) */
171 NID_sect163r2, /* sect163r2 (3) */
172 NID_sect193r1, /* sect193r1 (4) */
173 NID_sect193r2, /* sect193r2 (5) */
174 NID_sect233k1, /* sect233k1 (6) */
175 NID_sect233r1, /* sect233r1 (7) */
176 NID_sect239k1, /* sect239k1 (8) */
177 NID_sect283k1, /* sect283k1 (9) */
178 NID_sect283r1, /* sect283r1 (10) */
179 NID_sect409k1, /* sect409k1 (11) */
180 NID_sect409r1, /* sect409r1 (12) */
181 NID_sect571k1, /* sect571k1 (13) */
182 NID_sect571r1, /* sect571r1 (14) */
183 NID_secp160k1, /* secp160k1 (15) */
184 NID_secp160r1, /* secp160r1 (16) */
185 NID_secp160r2, /* secp160r2 (17) */
186 NID_secp192k1, /* secp192k1 (18) */
187 NID_X9_62_prime192v1, /* secp192r1 (19) */
188 NID_secp224k1, /* secp224k1 (20) */
189 NID_secp224r1, /* secp224r1 (21) */
190 NID_secp256k1, /* secp256k1 (22) */
191 NID_X9_62_prime256v1, /* secp256r1 (23) */
192 NID_secp384r1, /* secp384r1 (24) */
193 NID_secp521r1 /* secp521r1 (25) */
196 int tls1_ec_curve_id2nid(int curve_id)
198 /* ECC curves from draft-ietf-tls-ecc-12.txt (Oct. 17, 2005) */
199 if ((curve_id < 1) || (curve_id > sizeof(nid_list)/sizeof(nid_list[0]))) return 0;
200 return nid_list[curve_id-1];
203 int tls1_ec_nid2curve_id(int nid)
205 /* ECC curves from draft-ietf-tls-ecc-12.txt (Oct. 17, 2005) */
208 case NID_sect163k1: /* sect163k1 (1) */
210 case NID_sect163r1: /* sect163r1 (2) */
212 case NID_sect163r2: /* sect163r2 (3) */
214 case NID_sect193r1: /* sect193r1 (4) */
216 case NID_sect193r2: /* sect193r2 (5) */
218 case NID_sect233k1: /* sect233k1 (6) */
220 case NID_sect233r1: /* sect233r1 (7) */
222 case NID_sect239k1: /* sect239k1 (8) */
224 case NID_sect283k1: /* sect283k1 (9) */
226 case NID_sect283r1: /* sect283r1 (10) */
228 case NID_sect409k1: /* sect409k1 (11) */
230 case NID_sect409r1: /* sect409r1 (12) */
232 case NID_sect571k1: /* sect571k1 (13) */
234 case NID_sect571r1: /* sect571r1 (14) */
236 case NID_secp160k1: /* secp160k1 (15) */
238 case NID_secp160r1: /* secp160r1 (16) */
240 case NID_secp160r2: /* secp160r2 (17) */
242 case NID_secp192k1: /* secp192k1 (18) */
244 case NID_X9_62_prime192v1: /* secp192r1 (19) */
246 case NID_secp224k1: /* secp224k1 (20) */
248 case NID_secp224r1: /* secp224r1 (21) */
250 case NID_secp256k1: /* secp256k1 (22) */
252 case NID_X9_62_prime256v1: /* secp256r1 (23) */
254 case NID_secp384r1: /* secp384r1 (24) */
256 case NID_secp521r1: /* secp521r1 (25) */
262 #endif /* OPENSSL_NO_EC */
264 #ifndef OPENSSL_NO_TLSEXT
265 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned char *limit)
268 unsigned char *ret = p;
272 if (ret>=limit) return NULL; /* this really never occurs, but ... */
274 if (s->tlsext_hostname != NULL)
276 /* Add TLS extension servername to the Client Hello message */
277 unsigned long size_str;
280 /* check for enough space.
281 4 for the servername type and entension length
282 2 for servernamelist length
283 1 for the hostname type
284 2 for hostname length
288 if ((lenmax = limit - ret - 9) < 0
289 || (size_str = strlen(s->tlsext_hostname)) > (unsigned long)lenmax)
292 /* extension type and length */
293 s2n(TLSEXT_TYPE_server_name,ret);
296 /* length of servername list */
299 /* hostname type, length and hostname */
300 *(ret++) = (unsigned char) TLSEXT_NAMETYPE_host_name;
302 memcpy(ret, s->tlsext_hostname, size_str);
306 #ifndef OPENSSL_NO_EC
307 if (s->tlsext_ecpointformatlist != NULL)
309 /* Add TLS extension ECPointFormats to the ClientHello message */
312 if ((lenmax = limit - ret - 5) < 0) return NULL;
313 if (s->tlsext_ecpointformatlist_length > (unsigned long)lenmax) return NULL;
314 if (s->tlsext_ecpointformatlist_length > 255)
316 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
320 s2n(TLSEXT_TYPE_ec_point_formats,ret);
321 s2n(s->tlsext_ecpointformatlist_length + 1,ret);
322 *(ret++) = (unsigned char) s->tlsext_ecpointformatlist_length;
323 memcpy(ret, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
324 ret+=s->tlsext_ecpointformatlist_length;
326 if (s->tlsext_ellipticcurvelist != NULL)
328 /* Add TLS extension EllipticCurves to the ClientHello message */
331 if ((lenmax = limit - ret - 6) < 0) return NULL;
332 if (s->tlsext_ellipticcurvelist_length > (unsigned long)lenmax) return NULL;
333 if (s->tlsext_ellipticcurvelist_length > 65532)
335 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
339 s2n(TLSEXT_TYPE_elliptic_curves,ret);
340 s2n(s->tlsext_ellipticcurvelist_length + 2, ret);
342 /* NB: draft-ietf-tls-ecc-12.txt uses a one-byte prefix for
343 * elliptic_curve_list, but the examples use two bytes.
344 * http://www1.ietf.org/mail-archive/web/tls/current/msg00538.html
345 * resolves this to two bytes.
347 s2n(s->tlsext_ellipticcurvelist_length, ret);
348 memcpy(ret, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length);
349 ret+=s->tlsext_ellipticcurvelist_length;
351 #endif /* OPENSSL_NO_EC */
353 if (!(SSL_get_options(s) & SSL_OP_NO_TICKET))
356 if (s->session && s->session->tlsext_tick)
357 ticklen = s->session->tlsext_ticklen;
360 /* Check for enough room 2 for extension type, 2 for len
363 if ((long)(limit - ret - 4 - ticklen) < 0) return NULL;
364 s2n(TLSEXT_TYPE_session_ticket,ret);
368 memcpy(ret, s->session->tlsext_tick, ticklen);
373 #ifdef TLSEXT_TYPE_opaque_prf_input
374 if (s->s3->client_opaque_prf_input != NULL)
376 size_t col = s->s3->client_opaque_prf_input_len;
378 if ((long)(limit - ret - 6 - col < 0))
380 if (col > 0xFFFD) /* can't happen */
383 s2n(TLSEXT_TYPE_opaque_prf_input, ret);
386 memcpy(ret, s->s3->client_opaque_prf_input, col);
391 if (s->tlsext_status_type == TLSEXT_STATUSTYPE_ocsp)
394 long extlen, idlen, itmp;
398 for (i = 0; i < sk_OCSP_RESPID_num(s->tlsext_ocsp_ids); i++)
400 id = sk_OCSP_RESPID_value(s->tlsext_ocsp_ids, i);
401 itmp = i2d_OCSP_RESPID(id, NULL);
407 if (s->tlsext_ocsp_exts)
409 extlen = i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, NULL);
416 if ((long)(limit - ret - 7 - extlen - idlen) < 0) return NULL;
417 s2n(TLSEXT_TYPE_status_request, ret);
418 if (extlen + idlen > 0xFFF0)
420 s2n(extlen + idlen + 5, ret);
421 *(ret++) = TLSEXT_STATUSTYPE_ocsp;
423 for (i = 0; i < sk_OCSP_RESPID_num(s->tlsext_ocsp_ids); i++)
425 /* save position of id len */
426 unsigned char *q = ret;
427 id = sk_OCSP_RESPID_value(s->tlsext_ocsp_ids, i);
428 /* skip over id len */
430 itmp = i2d_OCSP_RESPID(id, &ret);
436 i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, &ret);
439 if ((extdatalen = ret-p-2)== 0)
446 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned char *limit)
449 unsigned char *ret = p;
452 if (ret>=limit) return NULL; /* this really never occurs, but ... */
454 if (!s->hit && s->servername_done == 1 && s->session->tlsext_hostname != NULL)
456 if ((long)(limit - ret - 4) < 0) return NULL;
458 s2n(TLSEXT_TYPE_server_name,ret);
461 #ifndef OPENSSL_NO_EC
462 if (s->tlsext_ecpointformatlist != NULL)
464 /* Add TLS extension ECPointFormats to the ServerHello message */
467 if ((lenmax = limit - ret - 5) < 0) return NULL;
468 if (s->tlsext_ecpointformatlist_length > (unsigned long)lenmax) return NULL;
469 if (s->tlsext_ecpointformatlist_length > 255)
471 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
475 s2n(TLSEXT_TYPE_ec_point_formats,ret);
476 s2n(s->tlsext_ecpointformatlist_length + 1,ret);
477 *(ret++) = (unsigned char) s->tlsext_ecpointformatlist_length;
478 memcpy(ret, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
479 ret+=s->tlsext_ecpointformatlist_length;
482 /* Currently the server should not respond with a SupportedCurves extension */
483 #endif /* OPENSSL_NO_EC */
485 if (s->tlsext_ticket_expected
486 && !(SSL_get_options(s) & SSL_OP_NO_TICKET))
488 if ((long)(limit - ret - 4) < 0) return NULL;
489 s2n(TLSEXT_TYPE_session_ticket,ret);
493 if (s->tlsext_status_expected)
495 if ((long)(limit - ret - 4) < 0) return NULL;
496 s2n(TLSEXT_TYPE_status_request,ret);
500 #ifdef TLSEXT_TYPE_opaque_prf_input
501 if (s->s3->server_opaque_prf_input != NULL)
503 size_t sol = s->s3->server_opaque_prf_input_len;
505 if ((long)(limit - ret - 6 - sol) < 0)
507 if (sol > 0xFFFD) /* can't happen */
510 s2n(TLSEXT_TYPE_opaque_prf_input, ret);
513 memcpy(ret, s->s3->server_opaque_prf_input, sol);
517 if (((s->s3->tmp.new_cipher->id & 0xFFFF)==0x80 || (s->s3->tmp.new_cipher->id & 0xFFFF)==0x81)
518 && (SSL_get_options(s) & SSL_OP_CRYPTOPRO_TLSEXT_BUG))
519 { const unsigned char cryptopro_ext[36] = {
520 0xfd, 0xe8, /*65000*/
521 0x00, 0x20, /*32 bytes length*/
522 0x30, 0x1e, 0x30, 0x08, 0x06, 0x06, 0x2a, 0x85,
523 0x03, 0x02, 0x02, 0x09, 0x30, 0x08, 0x06, 0x06,
524 0x2a, 0x85, 0x03, 0x02, 0x02, 0x16, 0x30, 0x08,
525 0x06, 0x06, 0x2a, 0x85, 0x03, 0x02, 0x02, 0x17};
526 if (limit-ret<36) return NULL;
527 memcpy(ret,cryptopro_ext,36);
532 if ((extdatalen = ret-p-2)== 0)
539 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
544 unsigned char *data = *p;
545 s->servername_done = 0;
546 s->tlsext_status_type = -1;
552 if (data > (d+n-len))
555 while (data <= (d+n-4))
560 if (data+size > (d+n))
562 fprintf(stderr,"Received extension type %d size %d\n",type,size);
563 if (s->tlsext_debug_cb)
564 s->tlsext_debug_cb(s, 0, type, data, size,
565 s->tlsext_debug_arg);
566 /* The servername extension is treated as follows:
568 - Only the hostname type is supported with a maximum length of 255.
569 - The servername is rejected if too long or if it contains zeros,
570 in which case an fatal alert is generated.
571 - The servername field is maintained together with the session cache.
572 - When a session is resumed, the servername call back invoked in order
573 to allow the application to position itself to the right context.
574 - The servername is acknowledged if it is new for a session or when
575 it is identical to a previously used for the same session.
576 Applications can control the behaviour. They can at any time
577 set a 'desirable' servername for a new SSL object. This can be the
578 case for example with HTTPS when a Host: header field is received and
579 a renegotiation is requested. In this case, a possible servername
580 presented in the new client hello is only acknowledged if it matches
581 the value of the Host: field.
582 - Applications must use SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
583 if they provide for changing an explicit servername context for the session,
584 i.e. when the session has been established with a servername extension.
585 - On session reconnect, the servername extension may be absent.
589 if (type == TLSEXT_TYPE_server_name)
591 unsigned char *sdata;
597 *al = SSL_AD_DECODE_ERROR;
604 *al = SSL_AD_DECODE_ERROR;
611 servname_type = *(sdata++);
617 *al = SSL_AD_DECODE_ERROR;
620 if (s->servername_done == 0)
621 switch (servname_type)
623 case TLSEXT_NAMETYPE_host_name:
624 if (s->session->tlsext_hostname == NULL)
626 if (len > TLSEXT_MAXLEN_host_name ||
627 ((s->session->tlsext_hostname = OPENSSL_malloc(len+1)) == NULL))
629 *al = TLS1_AD_UNRECOGNIZED_NAME;
632 memcpy(s->session->tlsext_hostname, sdata, len);
633 s->session->tlsext_hostname[len]='\0';
634 if (strlen(s->session->tlsext_hostname) != len) {
635 OPENSSL_free(s->session->tlsext_hostname);
636 *al = TLS1_AD_UNRECOGNIZED_NAME;
639 s->servername_done = 1;
643 s->servername_done = strlen(s->session->tlsext_hostname) == len
644 && strncmp(s->session->tlsext_hostname, (char *)sdata, len) == 0;
656 *al = SSL_AD_DECODE_ERROR;
662 #ifndef OPENSSL_NO_EC
663 else if (type == TLSEXT_TYPE_ec_point_formats)
665 unsigned char *sdata = data;
666 int ecpointformatlist_length = *(sdata++);
668 if (ecpointformatlist_length != size - 1)
670 *al = TLS1_AD_DECODE_ERROR;
673 s->session->tlsext_ecpointformatlist_length = 0;
674 if (s->session->tlsext_ecpointformatlist != NULL) OPENSSL_free(s->session->tlsext_ecpointformatlist);
675 if ((s->session->tlsext_ecpointformatlist = OPENSSL_malloc(ecpointformatlist_length)) == NULL)
677 *al = TLS1_AD_INTERNAL_ERROR;
680 s->session->tlsext_ecpointformatlist_length = ecpointformatlist_length;
681 memcpy(s->session->tlsext_ecpointformatlist, sdata, ecpointformatlist_length);
683 fprintf(stderr,"ssl_parse_clienthello_tlsext s->session->tlsext_ecpointformatlist (length=%i) ", s->session->tlsext_ecpointformatlist_length);
684 sdata = s->session->tlsext_ecpointformatlist;
685 for (i = 0; i < s->session->tlsext_ecpointformatlist_length; i++)
686 fprintf(stderr,"%i ",*(sdata++));
687 fprintf(stderr,"\n");
690 else if (type == TLSEXT_TYPE_elliptic_curves)
692 unsigned char *sdata = data;
693 int ellipticcurvelist_length = (*(sdata++) << 8);
694 ellipticcurvelist_length += (*(sdata++));
696 if (ellipticcurvelist_length != size - 2)
698 *al = TLS1_AD_DECODE_ERROR;
701 s->session->tlsext_ellipticcurvelist_length = 0;
702 if (s->session->tlsext_ellipticcurvelist != NULL) OPENSSL_free(s->session->tlsext_ellipticcurvelist);
703 if ((s->session->tlsext_ellipticcurvelist = OPENSSL_malloc(ellipticcurvelist_length)) == NULL)
705 *al = TLS1_AD_INTERNAL_ERROR;
708 s->session->tlsext_ellipticcurvelist_length = ellipticcurvelist_length;
709 memcpy(s->session->tlsext_ellipticcurvelist, sdata, ellipticcurvelist_length);
711 fprintf(stderr,"ssl_parse_clienthello_tlsext s->session->tlsext_ellipticcurvelist (length=%i) ", s->session->tlsext_ellipticcurvelist_length);
712 sdata = s->session->tlsext_ellipticcurvelist;
713 for (i = 0; i < s->session->tlsext_ellipticcurvelist_length; i++)
714 fprintf(stderr,"%i ",*(sdata++));
715 fprintf(stderr,"\n");
718 #endif /* OPENSSL_NO_EC */
719 #ifdef TLSEXT_TYPE_opaque_prf_input
720 else if (type == TLSEXT_TYPE_opaque_prf_input)
722 unsigned char *sdata = data;
726 *al = SSL_AD_DECODE_ERROR;
729 n2s(sdata, s->s3->client_opaque_prf_input_len);
730 if (s->s3->client_opaque_prf_input_len != size - 2)
732 *al = SSL_AD_DECODE_ERROR;
736 if (s->s3->client_opaque_prf_input != NULL) /* shouldn't really happen */
737 OPENSSL_free(s->s3->client_opaque_prf_input);
738 if (s->s3->client_opaque_prf_input_len == 0)
739 s->s3->client_opaque_prf_input = OPENSSL_malloc(1); /* dummy byte just to get non-NULL */
741 s->s3->client_opaque_prf_input = BUF_memdup(sdata, s->s3->client_opaque_prf_input_len);
742 if (s->s3->client_opaque_prf_input == NULL)
744 *al = TLS1_AD_INTERNAL_ERROR;
749 else if (type == TLSEXT_TYPE_status_request
750 && s->ctx->tlsext_status_cb)
755 *al = SSL_AD_DECODE_ERROR;
759 s->tlsext_status_type = *data++;
761 if (s->tlsext_status_type == TLSEXT_STATUSTYPE_ocsp)
763 const unsigned char *sdata;
765 /* Read in responder_id_list */
770 *al = SSL_AD_DECODE_ERROR;
779 *al = SSL_AD_DECODE_ERROR;
786 *al = SSL_AD_DECODE_ERROR;
791 id = d2i_OCSP_RESPID(NULL,
795 *al = SSL_AD_DECODE_ERROR;
800 OCSP_RESPID_free(id);
801 *al = SSL_AD_DECODE_ERROR;
804 if (!s->tlsext_ocsp_ids
805 && !(s->tlsext_ocsp_ids =
806 sk_OCSP_RESPID_new_null()))
808 OCSP_RESPID_free(id);
809 *al = SSL_AD_INTERNAL_ERROR;
812 if (!sk_OCSP_RESPID_push(
813 s->tlsext_ocsp_ids, id))
815 OCSP_RESPID_free(id);
816 *al = SSL_AD_INTERNAL_ERROR;
821 /* Read in request_extensions */
826 *al = SSL_AD_DECODE_ERROR;
832 s->tlsext_ocsp_exts =
833 d2i_X509_EXTENSIONS(NULL,
835 if (!s->tlsext_ocsp_exts
836 || (data + dsize != sdata))
838 *al = SSL_AD_DECODE_ERROR;
843 /* We don't know what to do with any other type
847 s->tlsext_status_type = -1;
850 /* session ticket processed earlier */
858 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
863 unsigned char *data = *p;
865 int tlsext_servername = 0;
872 while(data <= (d+n-4))
877 if (data+size > (d+n))
880 if (s->tlsext_debug_cb)
881 s->tlsext_debug_cb(s, 1, type, data, size,
882 s->tlsext_debug_arg);
884 if (type == TLSEXT_TYPE_server_name)
886 if (s->tlsext_hostname == NULL || size > 0)
888 *al = TLS1_AD_UNRECOGNIZED_NAME;
891 tlsext_servername = 1;
894 #ifndef OPENSSL_NO_EC
895 else if (type == TLSEXT_TYPE_ec_point_formats)
897 unsigned char *sdata = data;
898 int ecpointformatlist_length = *(sdata++);
900 if (ecpointformatlist_length != size - 1)
902 *al = TLS1_AD_DECODE_ERROR;
905 s->session->tlsext_ecpointformatlist_length = 0;
906 if (s->session->tlsext_ecpointformatlist != NULL) OPENSSL_free(s->session->tlsext_ecpointformatlist);
907 if ((s->session->tlsext_ecpointformatlist = OPENSSL_malloc(ecpointformatlist_length)) == NULL)
909 *al = TLS1_AD_INTERNAL_ERROR;
912 s->session->tlsext_ecpointformatlist_length = ecpointformatlist_length;
913 memcpy(s->session->tlsext_ecpointformatlist, sdata, ecpointformatlist_length);
915 fprintf(stderr,"ssl_parse_serverhello_tlsext s->session->tlsext_ecpointformatlist ");
916 sdata = s->session->tlsext_ecpointformatlist;
917 for (i = 0; i < s->session->tlsext_ecpointformatlist_length; i++)
918 fprintf(stderr,"%i ",*(sdata++));
919 fprintf(stderr,"\n");
922 #endif /* OPENSSL_NO_EC */
924 else if (type == TLSEXT_TYPE_session_ticket)
926 if ((SSL_get_options(s) & SSL_OP_NO_TICKET)
929 *al = TLS1_AD_UNSUPPORTED_EXTENSION;
932 s->tlsext_ticket_expected = 1;
934 #ifdef TLSEXT_TYPE_opaque_prf_input
935 else if (type == TLSEXT_TYPE_opaque_prf_input)
937 unsigned char *sdata = data;
941 *al = SSL_AD_DECODE_ERROR;
944 n2s(sdata, s->s3->server_opaque_prf_input_len);
945 if (s->s3->server_opaque_prf_input_len != size - 2)
947 *al = SSL_AD_DECODE_ERROR;
951 if (s->s3->server_opaque_prf_input != NULL) /* shouldn't really happen */
952 OPENSSL_free(s->s3->server_opaque_prf_input);
953 if (s->s3->server_opaque_prf_input_len == 0)
954 s->s3->server_opaque_prf_input = OPENSSL_malloc(1); /* dummy byte just to get non-NULL */
956 s->s3->server_opaque_prf_input = BUF_memdup(sdata, s->s3->server_opaque_prf_input_len);
958 if (s->s3->server_opaque_prf_input == NULL)
960 *al = TLS1_AD_INTERNAL_ERROR;
965 else if (type == TLSEXT_TYPE_status_request)
967 /* MUST be empty and only sent if we've requested
968 * a status request message.
970 if ((s->tlsext_status_type == -1) || (size > 0))
972 *al = TLS1_AD_UNSUPPORTED_EXTENSION;
975 /* Set flag to expect CertificateStatus message */
976 s->tlsext_status_expected = 1;
984 *al = SSL_AD_DECODE_ERROR;
988 if (!s->hit && tlsext_servername == 1)
990 if (s->tlsext_hostname)
992 if (s->session->tlsext_hostname == NULL)
994 s->session->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
995 if (!s->session->tlsext_hostname)
997 *al = SSL_AD_UNRECOGNIZED_NAME;
1003 *al = SSL_AD_DECODE_ERROR;
1014 int ssl_prepare_clienthello_tlsext(SSL *s)
1016 #ifndef OPENSSL_NO_EC
1017 /* If we are client and using an elliptic curve cryptography cipher suite, send the point formats
1018 * and elliptic curves we support.
1023 unsigned long alg_k, alg_a;
1024 STACK_OF(SSL_CIPHER) *cipher_stack = SSL_get_ciphers(s);
1026 for (i = 0; i < sk_SSL_CIPHER_num(cipher_stack); i++)
1028 SSL_CIPHER *c = sk_SSL_CIPHER_value(cipher_stack, i);
1030 alg_k = c->algorithm_mkey;
1031 alg_a = c->algorithm_auth;
1032 if ((alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe) || (alg_a & SSL_aECDSA)))
1038 using_ecc = using_ecc && (s->version == TLS1_VERSION);
1041 if (s->tlsext_ecpointformatlist != NULL) OPENSSL_free(s->tlsext_ecpointformatlist);
1042 if ((s->tlsext_ecpointformatlist = OPENSSL_malloc(3)) == NULL)
1044 SSLerr(SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT,ERR_R_MALLOC_FAILURE);
1047 s->tlsext_ecpointformatlist_length = 3;
1048 s->tlsext_ecpointformatlist[0] = TLSEXT_ECPOINTFORMAT_uncompressed;
1049 s->tlsext_ecpointformatlist[1] = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime;
1050 s->tlsext_ecpointformatlist[2] = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2;
1052 /* we support all named elliptic curves in draft-ietf-tls-ecc-12 */
1053 if (s->tlsext_ellipticcurvelist != NULL) OPENSSL_free(s->tlsext_ellipticcurvelist);
1054 s->tlsext_ellipticcurvelist_length = sizeof(nid_list)/sizeof(nid_list[0]) * 2;
1055 if ((s->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
1057 s->tlsext_ellipticcurvelist_length = 0;
1058 SSLerr(SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT,ERR_R_MALLOC_FAILURE);
1061 for (i = 1, j = s->tlsext_ellipticcurvelist; i <= sizeof(nid_list)/sizeof(nid_list[0]); i++)
1064 #endif /* OPENSSL_NO_EC */
1066 #ifdef TLSEXT_TYPE_opaque_prf_input
1070 if (s->ctx->tlsext_opaque_prf_input_callback != 0)
1072 r = s->ctx->tlsext_opaque_prf_input_callback(s, NULL, 0, s->ctx->tlsext_opaque_prf_input_callback_arg);
1077 if (s->tlsext_opaque_prf_input != NULL)
1079 if (s->s3->client_opaque_prf_input != NULL) /* shouldn't really happen */
1080 OPENSSL_free(s->s3->client_opaque_prf_input);
1082 if (s->tlsext_opaque_prf_input_len == 0)
1083 s->s3->client_opaque_prf_input = OPENSSL_malloc(1); /* dummy byte just to get non-NULL */
1085 s->s3->client_opaque_prf_input = BUF_memdup(s->tlsext_opaque_prf_input, s->tlsext_opaque_prf_input_len);
1086 if (s->s3->client_opaque_prf_input == NULL)
1088 SSLerr(SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT,ERR_R_MALLOC_FAILURE);
1091 s->s3->client_opaque_prf_input_len = s->tlsext_opaque_prf_input_len;
1095 /* at callback's request, insist on receiving an appropriate server opaque PRF input */
1096 s->s3->server_opaque_prf_input_len = s->tlsext_opaque_prf_input_len;
1103 int ssl_prepare_serverhello_tlsext(SSL *s)
1105 #ifndef OPENSSL_NO_EC
1106 /* If we are server and using an ECC cipher suite, send the point formats we support
1107 * if the client sent us an ECPointsFormat extension. Note that the server is not
1108 * supposed to send an EllipticCurves extension.
1111 unsigned long alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
1112 unsigned long alg_a = s->s3->tmp.new_cipher->algorithm_auth;
1113 int using_ecc = (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) || (alg_a & SSL_aECDSA);
1114 using_ecc = using_ecc && (s->session->tlsext_ecpointformatlist != NULL);
1118 if (s->tlsext_ecpointformatlist != NULL) OPENSSL_free(s->tlsext_ecpointformatlist);
1119 if ((s->tlsext_ecpointformatlist = OPENSSL_malloc(3)) == NULL)
1121 SSLerr(SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT,ERR_R_MALLOC_FAILURE);
1124 s->tlsext_ecpointformatlist_length = 3;
1125 s->tlsext_ecpointformatlist[0] = TLSEXT_ECPOINTFORMAT_uncompressed;
1126 s->tlsext_ecpointformatlist[1] = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime;
1127 s->tlsext_ecpointformatlist[2] = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2;
1129 #endif /* OPENSSL_NO_EC */
1134 int ssl_check_clienthello_tlsext(SSL *s)
1136 int ret=SSL_TLSEXT_ERR_NOACK;
1137 int al = SSL_AD_UNRECOGNIZED_NAME;
1139 #ifndef OPENSSL_NO_EC
1140 /* The handling of the ECPointFormats extension is done elsewhere, namely in
1141 * ssl3_choose_cipher in s3_lib.c.
1143 /* The handling of the EllipticCurves extension is done elsewhere, namely in
1144 * ssl3_choose_cipher in s3_lib.c.
1148 if (s->ctx != NULL && s->ctx->tlsext_servername_callback != 0)
1149 ret = s->ctx->tlsext_servername_callback(s, &al, s->ctx->tlsext_servername_arg);
1150 else if (s->initial_ctx != NULL && s->initial_ctx->tlsext_servername_callback != 0)
1151 ret = s->initial_ctx->tlsext_servername_callback(s, &al, s->initial_ctx->tlsext_servername_arg);
1153 /* If status request then ask callback what to do.
1154 * Note: this must be called after servername callbacks in case
1155 * the certificate has changed.
1157 if ((s->tlsext_status_type != -1) && s->ctx->tlsext_status_cb)
1160 r = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1163 /* We don't want to send a status request response */
1164 case SSL_TLSEXT_ERR_NOACK:
1165 s->tlsext_status_expected = 0;
1167 /* status request response should be sent */
1168 case SSL_TLSEXT_ERR_OK:
1169 if (s->tlsext_ocsp_resp)
1170 s->tlsext_status_expected = 1;
1172 s->tlsext_status_expected = 0;
1174 /* something bad happened */
1175 case SSL_TLSEXT_ERR_ALERT_FATAL:
1176 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1177 al = SSL_AD_INTERNAL_ERROR;
1182 s->tlsext_status_expected = 0;
1184 #ifdef TLSEXT_TYPE_opaque_prf_input
1186 /* This sort of belongs into ssl_prepare_serverhello_tlsext(),
1187 * but we might be sending an alert in response to the client hello,
1188 * so this has to happen here in ssl_check_clienthello_tlsext(). */
1192 if (s->ctx->tlsext_opaque_prf_input_callback != 0)
1194 r = s->ctx->tlsext_opaque_prf_input_callback(s, NULL, 0, s->ctx->tlsext_opaque_prf_input_callback_arg);
1197 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1198 al = SSL_AD_INTERNAL_ERROR;
1203 if (s->s3->server_opaque_prf_input != NULL) /* shouldn't really happen */
1204 OPENSSL_free(s->s3->server_opaque_prf_input);
1205 s->s3->server_opaque_prf_input = NULL;
1207 if (s->tlsext_opaque_prf_input != NULL)
1209 if (s->s3->client_opaque_prf_input != NULL &&
1210 s->s3->client_opaque_prf_input_len == s->tlsext_opaque_prf_input_len)
1212 /* can only use this extension if we have a server opaque PRF input
1213 * of the same length as the client opaque PRF input! */
1215 if (s->tlsext_opaque_prf_input_len == 0)
1216 s->s3->server_opaque_prf_input = OPENSSL_malloc(1); /* dummy byte just to get non-NULL */
1218 s->s3->server_opaque_prf_input = BUF_memdup(s->tlsext_opaque_prf_input, s->tlsext_opaque_prf_input_len);
1219 if (s->s3->server_opaque_prf_input == NULL)
1221 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1222 al = SSL_AD_INTERNAL_ERROR;
1225 s->s3->server_opaque_prf_input_len = s->tlsext_opaque_prf_input_len;
1229 if (r == 2 && s->s3->server_opaque_prf_input == NULL)
1231 /* The callback wants to enforce use of the extension,
1232 * but we can't do that with the client opaque PRF input;
1233 * abort the handshake.
1235 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1236 al = SSL_AD_HANDSHAKE_FAILURE;
1244 case SSL_TLSEXT_ERR_ALERT_FATAL:
1245 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1248 case SSL_TLSEXT_ERR_ALERT_WARNING:
1249 ssl3_send_alert(s,SSL3_AL_WARNING,al);
1252 case SSL_TLSEXT_ERR_NOACK:
1253 s->servername_done=0;
1259 int ssl_check_serverhello_tlsext(SSL *s)
1261 int ret=SSL_TLSEXT_ERR_NOACK;
1262 int al = SSL_AD_UNRECOGNIZED_NAME;
1264 #ifndef OPENSSL_NO_EC
1265 /* If we are client and using an elliptic curve cryptography cipher suite, then server
1266 * must return a an EC point formats lists containing uncompressed.
1268 unsigned long alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
1269 unsigned long alg_a = s->s3->tmp.new_cipher->algorithm_auth;
1270 if ((s->tlsext_ecpointformatlist != NULL) && (s->tlsext_ecpointformatlist_length > 0) &&
1271 ((alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) || (alg_a & SSL_aECDSA)))
1273 /* we are using an ECC cipher */
1275 unsigned char *list;
1276 int found_uncompressed = 0;
1277 if ((s->session->tlsext_ecpointformatlist == NULL) || (s->session->tlsext_ecpointformatlist_length == 0))
1279 SSLerr(SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT,SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST);
1282 list = s->session->tlsext_ecpointformatlist;
1283 for (i = 0; i < s->session->tlsext_ecpointformatlist_length; i++)
1285 if (*(list++) == TLSEXT_ECPOINTFORMAT_uncompressed)
1287 found_uncompressed = 1;
1291 if (!found_uncompressed)
1293 SSLerr(SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT,SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST);
1297 ret = SSL_TLSEXT_ERR_OK;
1298 #endif /* OPENSSL_NO_EC */
1300 if (s->ctx != NULL && s->ctx->tlsext_servername_callback != 0)
1301 ret = s->ctx->tlsext_servername_callback(s, &al, s->ctx->tlsext_servername_arg);
1302 else if (s->initial_ctx != NULL && s->initial_ctx->tlsext_servername_callback != 0)
1303 ret = s->initial_ctx->tlsext_servername_callback(s, &al, s->initial_ctx->tlsext_servername_arg);
1305 #ifdef TLSEXT_TYPE_opaque_prf_input
1306 if (s->s3->server_opaque_prf_input_len > 0)
1308 /* This case may indicate that we, as a client, want to insist on using opaque PRF inputs.
1309 * So first verify that we really have a value from the server too. */
1311 if (s->s3->server_opaque_prf_input == NULL)
1313 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1314 al = SSL_AD_HANDSHAKE_FAILURE;
1317 /* Anytime the server *has* sent an opaque PRF input, we need to check
1318 * that we have a client opaque PRF input of the same size. */
1319 if (s->s3->client_opaque_prf_input == NULL ||
1320 s->s3->client_opaque_prf_input_len != s->s3->server_opaque_prf_input_len)
1322 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1323 al = SSL_AD_ILLEGAL_PARAMETER;
1328 /* If we've requested certificate status and we wont get one
1331 if ((s->tlsext_status_type != -1) && !(s->tlsext_status_expected)
1332 && s->ctx->tlsext_status_cb)
1335 /* Set resp to NULL, resplen to -1 so callback knows
1336 * there is no response.
1338 if (s->tlsext_ocsp_resp)
1340 OPENSSL_free(s->tlsext_ocsp_resp);
1341 s->tlsext_ocsp_resp = NULL;
1343 s->tlsext_ocsp_resplen = -1;
1344 r = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1347 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1348 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1352 al = SSL_AD_INTERNAL_ERROR;
1353 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
1359 case SSL_TLSEXT_ERR_ALERT_FATAL:
1360 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1363 case SSL_TLSEXT_ERR_ALERT_WARNING:
1364 ssl3_send_alert(s,SSL3_AL_WARNING,al);
1367 case SSL_TLSEXT_ERR_NOACK:
1368 s->servername_done=0;
1374 /* Since the server cache lookup is done early on in the processing of client
1375 * hello and other operations depend on the result we need to handle any TLS
1376 * session ticket extension at the same time.
1379 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1380 const unsigned char *limit, SSL_SESSION **ret)
1382 /* Point after session ID in client hello */
1383 const unsigned char *p = session_id + len;
1385 if ((s->version <= SSL3_VERSION) || !limit)
1389 /* Skip past cipher list */
1394 /* Skip past compression algorithm list */
1399 /* Now at start of extensions */
1400 if ((p + 2) >= limit)
1403 while ((p + 4) <= limit)
1405 unsigned short type, size;
1408 if (p + size > limit)
1410 if (type == TLSEXT_TYPE_session_ticket)
1412 /* If tickets disabled indicate cache miss which will
1413 * trigger a full handshake
1415 if (SSL_get_options(s) & SSL_OP_NO_TICKET)
1417 /* If zero length not client will accept a ticket
1418 * and indicate cache miss to trigger full handshake
1422 s->tlsext_ticket_expected = 1;
1423 return 0; /* Cache miss */
1425 return tls_decrypt_ticket(s, p, size, session_id, len,
1433 static int tls_decrypt_ticket(SSL *s, const unsigned char *etick, int eticklen,
1434 const unsigned char *sess_id, int sesslen,
1435 SSL_SESSION **psess)
1438 unsigned char *sdec;
1439 const unsigned char *p;
1441 unsigned char tick_hmac[EVP_MAX_MD_SIZE];
1444 /* Attempt to process session ticket, first conduct sanity and
1445 * integrity checks on ticket.
1447 mlen = EVP_MD_size(tlsext_tick_md());
1449 /* Need at least keyname + iv + some encrypted data */
1452 /* Check key name matches */
1453 if (memcmp(etick, s->ctx->tlsext_tick_key_name, 16))
1455 /* Check HMAC of encrypted ticket */
1456 HMAC_CTX_init(&hctx);
1457 HMAC_Init_ex(&hctx, s->ctx->tlsext_tick_hmac_key, 16,
1458 tlsext_tick_md(), NULL);
1459 HMAC_Update(&hctx, etick, eticklen);
1460 HMAC_Final(&hctx, tick_hmac, NULL);
1461 HMAC_CTX_cleanup(&hctx);
1462 if (memcmp(tick_hmac, etick + eticklen, mlen))
1464 /* Set p to start of IV */
1466 EVP_CIPHER_CTX_init(&ctx);
1467 /* Attempt to decrypt session data */
1468 EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
1469 s->ctx->tlsext_tick_aes_key, p);
1470 /* Move p after IV to start of encrypted ticket, update length */
1473 sdec = OPENSSL_malloc(eticklen);
1476 EVP_CIPHER_CTX_cleanup(&ctx);
1479 EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen);
1480 if (EVP_DecryptFinal(&ctx, sdec + slen, &mlen) <= 0)
1483 EVP_CIPHER_CTX_cleanup(&ctx);
1486 sess = d2i_SSL_SESSION(NULL, &p, slen);
1490 /* The session ID if non-empty is used by some clients to
1491 * detect that the ticket has been accepted. So we copy it to
1492 * the session structure. If it is empty set length to zero
1493 * as required by standard.
1496 memcpy(sess->session_id, sess_id, sesslen);
1497 sess->session_id_length = sesslen;
1499 s->tlsext_ticket_expected = 0;
1502 /* If session decrypt failure indicate a cache miss and set state to
1506 s->tlsext_ticket_expected = 1;