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).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
143 #ifndef HEADER_SSL_LOCL_H
144 # define HEADER_SSL_LOCL_H
152 # include <openssl/buffer.h>
153 # ifndef OPENSSL_NO_COMP
154 # include <openssl/comp.h>
156 # include <openssl/bio.h>
157 # include <openssl/stack.h>
158 # ifndef OPENSSL_NO_RSA
159 # include <openssl/rsa.h>
161 # ifndef OPENSSL_NO_DSA
162 # include <openssl/dsa.h>
164 # include <openssl/err.h>
165 # include <openssl/ssl.h>
166 # include <openssl/symhacks.h>
168 # ifdef OPENSSL_BUILD_SHLIBSSL
169 # undef OPENSSL_EXTERN
170 # define OPENSSL_EXTERN OPENSSL_EXPORT
175 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
176 l|=(((unsigned long)(*((c)++)))<< 8), \
177 l|=(((unsigned long)(*((c)++)))<<16), \
178 l|=(((unsigned long)(*((c)++)))<<24))
180 /* NOTE - c is not incremented as per c2l */
181 # define c2ln(c,l1,l2,n) { \
185 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
186 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
187 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
188 case 5: l2|=((unsigned long)(*(--(c)))); \
189 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
190 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
191 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
192 case 1: l1|=((unsigned long)(*(--(c)))); \
196 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
197 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
198 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
199 *((c)++)=(unsigned char)(((l)>>24)&0xff))
201 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
202 l|=((unsigned long)(*((c)++)))<<16, \
203 l|=((unsigned long)(*((c)++)))<< 8, \
204 l|=((unsigned long)(*((c)++))))
206 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
207 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
208 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
209 *((c)++)=(unsigned char)(((l) )&0xff))
211 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
212 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
213 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
214 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
215 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
216 *((c)++)=(unsigned char)(((l) )&0xff))
218 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
219 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
220 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
221 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
222 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
223 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
224 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
225 *((c)++)=(unsigned char)(((l) )&0xff))
227 # define n2l6(c,l) (l =((BN_ULLONG)(*((c)++)))<<40, \
228 l|=((BN_ULLONG)(*((c)++)))<<32, \
229 l|=((BN_ULLONG)(*((c)++)))<<24, \
230 l|=((BN_ULLONG)(*((c)++)))<<16, \
231 l|=((BN_ULLONG)(*((c)++)))<< 8, \
232 l|=((BN_ULLONG)(*((c)++))))
234 /* NOTE - c is not incremented as per l2c */
235 # define l2cn(l1,l2,c,n) { \
238 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
239 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
240 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
241 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
242 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
243 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
244 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
245 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
249 # define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
250 (((unsigned int)(c[1])) )),c+=2)
251 # define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
252 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
254 # define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
255 (((unsigned long)(c[1]))<< 8)| \
256 (((unsigned long)(c[2])) )),c+=3)
258 # define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
259 c[1]=(unsigned char)(((l)>> 8)&0xff), \
260 c[2]=(unsigned char)(((l) )&0xff)),c+=3)
264 # define SSL_DECRYPT 0
265 # define SSL_ENCRYPT 1
267 # define TWO_BYTE_BIT 0x80
268 # define SEC_ESC_BIT 0x40
269 # define TWO_BYTE_MASK 0x7fff
270 # define THREE_BYTE_MASK 0x3fff
272 # define INC32(a) ((a)=((a)+1)&0xffffffffL)
273 # define DEC32(a) ((a)=((a)-1)&0xffffffffL)
274 # define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
277 * Define the Bitmasks for SSL_CIPHER.algorithms.
278 * This bits are used packed as dense as possible. If new methods/ciphers
279 * etc will be added, the bits a likely to change, so this information
280 * is for internal library use only, even though SSL_CIPHER.algorithms
281 * can be publicly accessed.
282 * Use the according functions for cipher management instead.
284 * The bit mask handling in the selection and sorting scheme in
285 * ssl_create_cipher_list() has only limited capabilities, reflecting
286 * that the different entities within are mutually exclusive:
287 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
290 /* Bits for algorithm_mkey (key exchange algorithm) */
291 /* RSA key exchange */
292 # define SSL_kRSA 0x00000001L
293 /* DH cert, RSA CA cert */
294 # define SSL_kDHr 0x00000002L
295 /* DH cert, DSA CA cert */
296 # define SSL_kDHd 0x00000004L
297 /* tmp DH key no DH cert */
298 # define SSL_kDHE 0x00000008L
300 # define SSL_kEDH SSL_kDHE
301 /* Kerberos5 key exchange */
302 # define SSL_kKRB5 0x00000010L
303 /* ECDH cert, RSA CA cert */
304 # define SSL_kECDHr 0x00000020L
305 /* ECDH cert, ECDSA CA cert */
306 # define SSL_kECDHe 0x00000040L
308 # define SSL_kECDHE 0x00000080L
310 # define SSL_kEECDH SSL_kECDHE
312 # define SSL_kPSK 0x00000100L
313 /* GOST key exchange */
314 # define SSL_kGOST 0x00000200L
316 # define SSL_kSRP 0x00000400L
318 /* Bits for algorithm_auth (server authentication) */
320 # define SSL_aRSA 0x00000001L
322 # define SSL_aDSS 0x00000002L
323 /* no auth (i.e. use ADH or AECDH) */
324 # define SSL_aNULL 0x00000004L
325 /* Fixed DH auth (kDHd or kDHr) */
326 # define SSL_aDH 0x00000008L
327 /* Fixed ECDH auth (kECDHe or kECDHr) */
328 # define SSL_aECDH 0x00000010L
330 # define SSL_aKRB5 0x00000020L
332 # define SSL_aECDSA 0x00000040L
334 # define SSL_aPSK 0x00000080L
335 /* GOST R 34.10-94 signature auth */
336 # define SSL_aGOST94 0x00000100L
337 /* GOST R 34.10-2001 signature auth */
338 # define SSL_aGOST01 0x00000200L
340 # define SSL_aSRP 0x00000400L
342 /* Bits for algorithm_enc (symmetric encryption) */
343 # define SSL_DES 0x00000001L
344 # define SSL_3DES 0x00000002L
345 # define SSL_RC4 0x00000004L
346 # define SSL_RC2 0x00000008L
347 # define SSL_IDEA 0x00000010L
348 # define SSL_eNULL 0x00000020L
349 # define SSL_AES128 0x00000040L
350 # define SSL_AES256 0x00000080L
351 # define SSL_CAMELLIA128 0x00000100L
352 # define SSL_CAMELLIA256 0x00000200L
353 # define SSL_eGOST2814789CNT 0x00000400L
354 # define SSL_SEED 0x00000800L
355 # define SSL_AES128GCM 0x00001000L
356 # define SSL_AES256GCM 0x00002000L
358 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
359 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
361 /* Bits for algorithm_mac (symmetric authentication) */
363 # define SSL_MD5 0x00000001L
364 # define SSL_SHA1 0x00000002L
365 # define SSL_GOST94 0x00000004L
366 # define SSL_GOST89MAC 0x00000008L
367 # define SSL_SHA256 0x00000010L
368 # define SSL_SHA384 0x00000020L
369 /* Not a real MAC, just an indication it is part of cipher */
370 # define SSL_AEAD 0x00000040L
372 /* Bits for algorithm_ssl (protocol version) */
373 # define SSL_SSLV3 0x00000002L
374 # define SSL_TLSV1 SSL_SSLV3/* for now */
375 # define SSL_TLSV1_2 0x00000004L
377 /* Bits for algorithm2 (handshake digests and other extra flags) */
379 # define SSL_HANDSHAKE_MAC_MD5 0x10
380 # define SSL_HANDSHAKE_MAC_SHA 0x20
381 # define SSL_HANDSHAKE_MAC_GOST94 0x40
382 # define SSL_HANDSHAKE_MAC_SHA256 0x80
383 # define SSL_HANDSHAKE_MAC_SHA384 0x100
384 # define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
387 * When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX make
388 * sure to update this constant too
390 # define SSL_MAX_DIGEST 6
392 # define TLS1_PRF_DGST_SHIFT 10
393 # define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
394 # define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
395 # define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
396 # define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
397 # define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
398 # define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
401 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
402 * goes into algorithm2)
404 # define TLS1_STREAM_MAC 0x04
407 * Export and cipher strength information. For each cipher we have to decide
408 * whether it is exportable or not. This information is likely to change
409 * over time, since the export control rules are no static technical issue.
411 * Independent of the export flag the cipher strength is sorted into classes.
412 * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
413 * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
414 * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
415 * since SSL_EXP64 could be similar to SSL_LOW.
416 * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
417 * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
418 * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
421 # define SSL_EXP_MASK 0x00000003L
422 # define SSL_STRONG_MASK 0x000001fcL
424 # define SSL_NOT_EXP 0x00000001L
425 # define SSL_EXPORT 0x00000002L
427 # define SSL_STRONG_NONE 0x00000004L
428 # define SSL_EXP40 0x00000008L
429 # define SSL_MICRO (SSL_EXP40)
430 # define SSL_EXP56 0x00000010L
431 # define SSL_MINI (SSL_EXP56)
432 # define SSL_LOW 0x00000020L
433 # define SSL_MEDIUM 0x00000040L
434 # define SSL_HIGH 0x00000080L
435 # define SSL_FIPS 0x00000100L
437 /* we have used 000001ff - 23 bits left to go */
440 * Macros to check the export status and cipher strength for export ciphers.
441 * Even though the macros for EXPORT and EXPORT40/56 have similar names,
442 * their meaning is different:
443 * *_EXPORT macros check the 'exportable' status.
444 * *_EXPORT40/56 macros are used to check whether a certain cipher strength
446 * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
447 * algorithm structure element to be passed (algorithms, algo_strength) and no
448 * typechecking can be done as they are all of type unsigned long, their
449 * direct usage is discouraged.
450 * Use the SSL_C_* macros instead.
452 # define SSL_IS_EXPORT(a) ((a)&SSL_EXPORT)
453 # define SSL_IS_EXPORT56(a) ((a)&SSL_EXP56)
454 # define SSL_IS_EXPORT40(a) ((a)&SSL_EXP40)
455 # define SSL_C_IS_EXPORT(c) SSL_IS_EXPORT((c)->algo_strength)
456 # define SSL_C_IS_EXPORT56(c) SSL_IS_EXPORT56((c)->algo_strength)
457 # define SSL_C_IS_EXPORT40(c) SSL_IS_EXPORT40((c)->algo_strength)
459 # define SSL_EXPORT_KEYLENGTH(a,s) (SSL_IS_EXPORT40(s) ? 5 : \
460 (a) == SSL_DES ? 8 : 7)
461 # define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
462 # define SSL_C_EXPORT_KEYLENGTH(c) SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
464 # define SSL_C_EXPORT_PKEYLENGTH(c) SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
466 /* Check if an SSL structure is using DTLS */
467 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
468 /* See if we need explicit IV */
469 # define SSL_USE_EXPLICIT_IV(s) \
470 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
472 * See if we use signature algorithms extension and signature algorithm
475 # define SSL_USE_SIGALGS(s) \
476 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
478 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
479 * apply to others in future.
481 # define SSL_USE_TLS1_2_CIPHERS(s) \
482 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
484 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
485 * flags because it may not be set to correct version yet.
487 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
488 ((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \
489 (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION))
491 # ifdef TLSEXT_TYPE_encrypt_then_mac
492 # define SSL_USE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC)
494 # define SSL_USE_ETM(s) (0)
497 /* Mostly for SSLv3 */
498 # define SSL_PKEY_RSA_ENC 0
499 # define SSL_PKEY_RSA_SIGN 1
500 # define SSL_PKEY_DSA_SIGN 2
501 # define SSL_PKEY_DH_RSA 3
502 # define SSL_PKEY_DH_DSA 4
503 # define SSL_PKEY_ECC 5
504 # define SSL_PKEY_GOST94 6
505 # define SSL_PKEY_GOST01 7
506 # define SSL_PKEY_NUM 8
509 * SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
510 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
511 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
512 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
513 * SSL_aRSA <- RSA_ENC | RSA_SIGN
514 * SSL_aDSS <- DSA_SIGN
518 #define CERT_INVALID 0
519 #define CERT_PUBLIC_KEY 1
520 #define CERT_PRIVATE_KEY 2
523 /* used to hold info on the particular ciphers used */
524 struct ssl_cipher_st {
526 const char *name; /* text name */
527 unsigned long id; /* id, 4 bytes, first is version */
529 * changed in 0.9.9: these four used to be portions of a single value
532 unsigned long algorithm_mkey; /* key exchange algorithm */
533 unsigned long algorithm_auth; /* server authentication */
534 unsigned long algorithm_enc; /* symmetric encryption */
535 unsigned long algorithm_mac; /* symmetric authentication */
536 unsigned long algorithm_ssl; /* (major) protocol version */
537 unsigned long algo_strength; /* strength and export flags */
538 unsigned long algorithm2; /* Extra flags */
539 int strength_bits; /* Number of bits really used */
540 int alg_bits; /* Number of bits for algorithm */
543 /* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
544 struct ssl_method_st {
546 int (*ssl_new) (SSL *s);
547 void (*ssl_clear) (SSL *s);
548 void (*ssl_free) (SSL *s);
549 int (*ssl_accept) (SSL *s);
550 int (*ssl_connect) (SSL *s);
551 int (*ssl_read) (SSL *s, void *buf, int len);
552 int (*ssl_peek) (SSL *s, void *buf, int len);
553 int (*ssl_write) (SSL *s, const void *buf, int len);
554 int (*ssl_shutdown) (SSL *s);
555 int (*ssl_renegotiate) (SSL *s);
556 int (*ssl_renegotiate_check) (SSL *s);
557 long (*ssl_get_message) (SSL *s, int st1, int stn, int mt, long
559 int (*ssl_read_bytes) (SSL *s, int type, unsigned char *buf, int len,
561 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
562 int (*ssl_dispatch_alert) (SSL *s);
563 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
564 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
565 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
566 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
567 int (*ssl_pending) (const SSL *s);
568 int (*num_ciphers) (void);
569 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
570 const struct ssl_method_st *(*get_ssl_method) (int version);
571 long (*get_timeout) (void);
572 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
573 int (*ssl_version) (void);
574 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
575 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
579 * Lets make this into an ASN.1 type structure as follows
580 * SSL_SESSION_ID ::= SEQUENCE {
581 * version INTEGER, -- structure version number
582 * SSLversion INTEGER, -- SSL version number
583 * Cipher OCTET STRING, -- the 3 byte cipher ID
584 * Session_ID OCTET STRING, -- the Session ID
585 * Master_key OCTET STRING, -- the master key
586 * KRB5_principal OCTET STRING -- optional Kerberos principal
587 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
588 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
589 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
590 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
591 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
592 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
593 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
594 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
595 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
596 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
597 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
598 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
599 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
601 * Look in ssl/ssl_asn1.c for more details
602 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
604 struct ssl_session_st {
605 int ssl_version; /* what ssl version session info is being
607 int master_key_length;
608 unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
609 /* session_id - valid? */
610 unsigned int session_id_length;
611 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
613 * this is used to determine whether the session is being reused in the
614 * appropriate context. It is up to the application to set this, via
617 unsigned int sid_ctx_length;
618 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
619 # ifndef OPENSSL_NO_KRB5
620 unsigned int krb5_client_princ_len;
621 unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
622 # endif /* OPENSSL_NO_KRB5 */
623 # ifndef OPENSSL_NO_PSK
624 char *psk_identity_hint;
628 * Used to indicate that session resumption is not allowed. Applications
629 * can also set this bit for a new session via not_resumable_session_cb
630 * to disable session caching and tickets.
633 /* The cert is the certificate used to establish this connection */
634 struct sess_cert_st /* SESS_CERT */ *sess_cert;
636 * This is the cert for the other end. On clients, it will be the same as
637 * sess_cert->peer_key->x509 (the latter is not enough as sess_cert is
638 * not retained in the external representation of sessions, see
643 * when app_verify_callback accepts a session where the peer's
644 * certificate is not ok, we must remember the error for session reuse:
646 long verify_result; /* only for servers */
650 unsigned int compress_meth; /* Need to lookup the method */
651 const SSL_CIPHER *cipher;
652 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used
653 * to load the 'cipher' structure */
654 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
655 CRYPTO_EX_DATA ex_data; /* application specific data */
657 * These are used to make removal of session-ids more efficient and to
658 * implement a maximum cache size.
660 struct ssl_session_st *prev, *next;
661 # ifndef OPENSSL_NO_TLSEXT
662 char *tlsext_hostname;
663 # ifndef OPENSSL_NO_EC
664 size_t tlsext_ecpointformatlist_length;
665 unsigned char *tlsext_ecpointformatlist; /* peer's list */
666 size_t tlsext_ellipticcurvelist_length;
667 unsigned char *tlsext_ellipticcurvelist; /* peer's list */
668 # endif /* OPENSSL_NO_EC */
670 unsigned char *tlsext_tick; /* Session ticket */
671 size_t tlsext_ticklen; /* Session ticket length */
672 long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
674 # ifndef OPENSSL_NO_SRP
680 # ifndef OPENSSL_NO_SRP
682 typedef struct srp_ctx_st {
683 /* param for all the callbacks */
685 /* set client Hello login callback */
686 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
687 /* set SRP N/g param callback for verification */
688 int (*SRP_verify_param_callback) (SSL *, void *);
689 /* set SRP client passwd callback */
690 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
692 BIGNUM *N, *g, *s, *B, *A;
696 unsigned long srp_Mask;
705 # ifndef OPENSSL_NO_COMP
712 DECLARE_STACK_OF(SSL_COMP)
713 DECLARE_LHASH_OF(SSL_SESSION);
716 const SSL_METHOD *method;
717 STACK_OF(SSL_CIPHER) *cipher_list;
718 /* same as above but sorted for lookup */
719 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
720 struct x509_store_st /* X509_STORE */ *cert_store;
721 LHASH_OF(SSL_SESSION) *sessions;
723 * Most session-ids that will be cached, default is
724 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
726 unsigned long session_cache_size;
727 struct ssl_session_st *session_cache_head;
728 struct ssl_session_st *session_cache_tail;
730 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
731 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
732 * means only SSL_accept which cache SSL_SESSIONS.
734 int session_cache_mode;
736 * If timeout is not 0, it is the default timeout value set when
737 * SSL_new() is called. This has been put in to make life easier to set
740 long session_timeout;
742 * If this callback is not null, it will be called each time a session id
743 * is added to the cache. If this function returns 1, it means that the
744 * callback will do a SSL_SESSION_free() when it has finished using it.
745 * Otherwise, on 0, it means the callback has finished with it. If
746 * remove_session_cb is not null, it will be called when a session-id is
747 * removed from the cache. After the call, OpenSSL will
748 * SSL_SESSION_free() it.
750 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
751 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
752 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
753 unsigned char *data, int len, int *copy);
755 int sess_connect; /* SSL new conn - started */
756 int sess_connect_renegotiate; /* SSL reneg - requested */
757 int sess_connect_good; /* SSL new conne/reneg - finished */
758 int sess_accept; /* SSL new accept - started */
759 int sess_accept_renegotiate; /* SSL reneg - requested */
760 int sess_accept_good; /* SSL accept/reneg - finished */
761 int sess_miss; /* session lookup misses */
762 int sess_timeout; /* reuse attempt on timeouted session */
763 int sess_cache_full; /* session removed due to full cache */
764 int sess_hit; /* session reuse actually done */
765 int sess_cb_hit; /* session-id that was not in the cache was
766 * passed back via the callback. This
767 * indicates that the application is
768 * supplying session-id's from other
769 * processes - spooky :-) */
774 /* if defined, these override the X509_verify_cert() calls */
775 int (*app_verify_callback) (X509_STORE_CTX *, void *);
776 void *app_verify_arg;
778 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
779 * ('app_verify_callback' was called with just one argument)
782 /* Default password callback. */
783 pem_password_cb *default_passwd_callback;
785 /* Default password callback user data. */
786 void *default_passwd_callback_userdata;
788 /* get client cert callback */
789 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
791 /* cookie generate callback */
792 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
793 unsigned int *cookie_len);
795 /* verify cookie callback */
796 int (*app_verify_cookie_cb) (SSL *ssl, unsigned char *cookie,
797 unsigned int cookie_len);
799 CRYPTO_EX_DATA ex_data;
801 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
802 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
804 STACK_OF(X509) *extra_certs;
805 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
807 /* Default values used when no per-SSL value is defined follow */
809 /* used if SSL's info_callback is NULL */
810 void (*info_callback) (const SSL *ssl, int type, int val);
812 /* what we put in client cert requests */
813 STACK_OF(X509_NAME) *client_CA;
816 * Default values to use in SSL structures follow (these are copied by
820 unsigned long options;
824 struct cert_st /* CERT */ *cert;
827 /* callback that allows applications to peek at protocol messages */
828 void (*msg_callback) (int write_p, int version, int content_type,
829 const void *buf, size_t len, SSL *ssl, void *arg);
830 void *msg_callback_arg;
833 unsigned int sid_ctx_length;
834 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
835 /* called 'verify_callback' in the SSL */
836 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
838 /* Default generate session ID callback. */
839 GEN_SESSION_CB generate_session_id;
841 X509_VERIFY_PARAM *param;
846 * Maximum amount of data to send in one fragment. actual record size can
847 * be more than this due to padding and MAC overheads.
849 unsigned int max_send_fragment;
851 # ifndef OPENSSL_NO_ENGINE
853 * Engine to pass requests for client certs to
855 ENGINE *client_cert_engine;
858 # ifndef OPENSSL_NO_TLSEXT
859 /* TLS extensions servername callback */
860 int (*tlsext_servername_callback) (SSL *, int *, void *);
861 void *tlsext_servername_arg;
862 /* RFC 4507 session ticket keys */
863 unsigned char tlsext_tick_key_name[16];
864 unsigned char tlsext_tick_hmac_key[16];
865 unsigned char tlsext_tick_aes_key[16];
866 /* Callback to support customisation of ticket key setting */
867 int (*tlsext_ticket_key_cb) (SSL *ssl,
868 unsigned char *name, unsigned char *iv,
869 EVP_CIPHER_CTX *ectx,
870 HMAC_CTX *hctx, int enc);
872 /* certificate status request info */
873 /* Callback for status request */
874 int (*tlsext_status_cb) (SSL *ssl, void *arg);
875 void *tlsext_status_arg;
878 # ifndef OPENSSL_NO_PSK
879 char *psk_identity_hint;
880 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
882 unsigned int max_identity_len,
884 unsigned int max_psk_len);
885 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
887 unsigned int max_psk_len);
890 # ifndef OPENSSL_NO_SRP
891 SRP_CTX srp_ctx; /* ctx for SRP authentication */
894 # ifndef OPENSSL_NO_TLSEXT
896 # ifndef OPENSSL_NO_NEXTPROTONEG
897 /* Next protocol negotiation information */
898 /* (for experimental NPN extension). */
901 * For a server, this contains a callback function by which the set of
902 * advertised protocols can be provided.
904 int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
905 unsigned int *len, void *arg);
906 void *next_protos_advertised_cb_arg;
908 * For a client, this contains a callback function that selects the next
909 * protocol from the list provided by the server.
911 int (*next_proto_select_cb) (SSL *s, unsigned char **out,
912 unsigned char *outlen,
913 const unsigned char *in,
914 unsigned int inlen, void *arg);
915 void *next_proto_select_cb_arg;
919 * ALPN information (we are in the process of transitioning from NPN to
924 * For a server, this contains a callback function that allows the
925 * server to select the protocol for the connection.
926 * out: on successful return, this must point to the raw protocol
927 * name (without the length prefix).
928 * outlen: on successful return, this contains the length of |*out|.
929 * in: points to the client's list of supported protocols in
931 * inlen: the length of |in|.
933 int (*alpn_select_cb) (SSL *s,
934 const unsigned char **out,
935 unsigned char *outlen,
936 const unsigned char *in,
937 unsigned int inlen, void *arg);
938 void *alpn_select_cb_arg;
941 * For a client, this contains the list of supported protocols in wire
944 unsigned char *alpn_client_proto_list;
945 unsigned alpn_client_proto_list_len;
947 /* SRTP profiles we are willing to do from RFC 5764 */
948 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
951 * Callback for disabling session caching and ticket support on a session
952 * basis, depending on the chosen cipher.
954 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
955 # ifndef OPENSSL_NO_EC
956 /* EC extension values inherited by SSL structure */
957 size_t tlsext_ecpointformatlist_length;
958 unsigned char *tlsext_ecpointformatlist;
959 size_t tlsext_ellipticcurvelist_length;
960 unsigned char *tlsext_ellipticcurvelist;
961 # endif /* OPENSSL_NO_EC */
967 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
971 /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
974 const SSL_METHOD *method;
976 * There are 2 BIO's even though they are normally both the same. This
977 * is so data can be read and written to different handlers
979 /* used by SSL_read */
981 /* used by SSL_write */
983 /* used during session-id reuse to concatenate messages */
986 * This holds a variable that indicates what we were doing when a 0 or -1
987 * is returned. This is needed for non-blocking IO so we know what
988 * request needs re-doing when in SSL_accept or SSL_connect
991 /* true when we are actually in SSL_accept() or SSL_connect() */
993 int (*handshake_func) (SSL *);
995 * Imagine that here's a boolean member "init" that is switched as soon
996 * as SSL_set_{accept/connect}_state is called for the first time, so
997 * that "state" and "handshake_func" are properly initialized. But as
998 * handshake_func is == 0 until then, we use this test instead of an
1001 /* are we the server side? - mostly used by SSL_clear */
1004 * Generate a new session or reuse an old one.
1005 * NB: For servers, the 'new' session may actually be a previously
1006 * cached session or even the previous session unless
1007 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1010 /* don't send shutdown packets */
1012 /* we have shut things down, 0x01 sent, 0x02 for received */
1016 /* where we are when reading */
1018 BUF_MEM *init_buf; /* buffer used during init */
1019 void *init_msg; /* pointer to handshake message body, set by
1020 * ssl3_get_message() */
1021 int init_num; /* amount read/written */
1022 int init_off; /* amount read/written */
1023 /* used internally to point at a raw packet */
1024 unsigned char *packet;
1025 unsigned int packet_length;
1026 struct ssl3_state_st *s3; /* SSLv3 variables */
1027 struct dtls1_state_st *d1; /* DTLSv1 variables */
1028 int read_ahead; /* Read as many input bytes as possible (for
1029 * non-blocking reads) */
1030 /* callback that allows applications to peek at protocol messages */
1031 void (*msg_callback) (int write_p, int version, int content_type,
1032 const void *buf, size_t len, SSL *ssl, void *arg);
1033 void *msg_callback_arg;
1034 int hit; /* reusing a previous session */
1035 X509_VERIFY_PARAM *param;
1037 STACK_OF(SSL_CIPHER) *cipher_list;
1038 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1040 * These are the ones being used, the ones in SSL_SESSION are the ones to
1041 * be 'copied' into these ones
1044 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1045 EVP_MD_CTX *read_hash; /* used for mac generation */
1046 # ifndef OPENSSL_NO_COMP
1047 COMP_CTX *expand; /* uncompress */
1051 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1052 EVP_MD_CTX *write_hash; /* used for mac generation */
1053 # ifndef OPENSSL_NO_COMP
1054 COMP_CTX *compress; /* compression */
1060 /* This is used to hold the server certificate used */
1061 struct cert_st /* CERT */ *cert;
1063 * the session_id_context is used to ensure sessions are only reused in
1064 * the appropriate context
1066 unsigned int sid_ctx_length;
1067 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1068 /* This can also be in the session once a session is established */
1069 SSL_SESSION *session;
1070 /* Default generate session ID callback. */
1071 GEN_SESSION_CB generate_session_id;
1074 * 0 don't care about verify failure.
1075 * 1 fail if verify fails
1078 /* fail if callback returns 0 */
1079 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1080 /* optional informational callback */
1081 void (*info_callback) (const SSL *ssl, int type, int val);
1082 /* error bytes to be written */
1086 # ifndef OPENSSL_NO_KRB5
1087 /* Kerberos 5 context */
1089 # endif /* OPENSSL_NO_KRB5 */
1090 # ifndef OPENSSL_NO_PSK
1091 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
1093 unsigned int max_identity_len,
1095 unsigned int max_psk_len);
1096 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
1098 unsigned int max_psk_len);
1102 * set this flag to 1 and a sleep(1) is put into all SSL_read() and
1103 * SSL_write() calls, good for nbio debuging :-)
1106 /* extra application data */
1108 CRYPTO_EX_DATA ex_data;
1109 /* for server side, keep the list of CA_dn we can use */
1110 STACK_OF(X509_NAME) *client_CA;
1112 /* protocol behaviour */
1113 unsigned long options;
1118 /* what was passed, used for SSLv3/TLS rollback check */
1120 unsigned int max_send_fragment;
1121 # ifndef OPENSSL_NO_TLSEXT
1122 /* TLS extension debug callback */
1123 void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
1124 unsigned char *data, int len, void *arg);
1125 void *tlsext_debug_arg;
1126 char *tlsext_hostname;
1128 * no further mod of servername
1129 * 0 : call the servername extension callback.
1130 * 1 : prepare 2, allow last ack just after in server callback.
1131 * 2 : don't call servername callback, no ack in server hello
1133 int servername_done;
1134 /* certificate status request info */
1135 /* Status type or -1 if no status type */
1136 int tlsext_status_type;
1137 /* Expect OCSP CertificateStatus message */
1138 int tlsext_status_expected;
1139 /* OCSP status request only */
1140 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
1141 X509_EXTENSIONS *tlsext_ocsp_exts;
1142 /* OCSP response received or to be sent */
1143 unsigned char *tlsext_ocsp_resp;
1144 int tlsext_ocsp_resplen;
1145 /* RFC4507 session ticket expected to be received or sent */
1146 int tlsext_ticket_expected;
1147 # ifndef OPENSSL_NO_EC
1148 size_t tlsext_ecpointformatlist_length;
1150 unsigned char *tlsext_ecpointformatlist;
1151 size_t tlsext_ellipticcurvelist_length;
1153 unsigned char *tlsext_ellipticcurvelist;
1154 # endif /* OPENSSL_NO_EC */
1155 /* TLS Session Ticket extension override */
1156 TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
1157 /* TLS Session Ticket extension callback */
1158 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
1159 void *tls_session_ticket_ext_cb_arg;
1160 /* TLS pre-shared secret session resumption */
1161 tls_session_secret_cb_fn tls_session_secret_cb;
1162 void *tls_session_secret_cb_arg;
1163 SSL_CTX *initial_ctx; /* initial ctx, used to store sessions */
1164 # ifndef OPENSSL_NO_NEXTPROTONEG
1166 * Next protocol negotiation. For the client, this is the protocol that
1167 * we sent in NextProtocol and is set when handling ServerHello
1168 * extensions. For a server, this is the client's selected_protocol from
1169 * NextProtocol and is set when handling the NextProtocol message, before
1170 * the Finished message.
1172 unsigned char *next_proto_negotiated;
1173 unsigned char next_proto_negotiated_len;
1175 # define session_ctx initial_ctx
1177 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1178 /* What's been chosen */
1179 SRTP_PROTECTION_PROFILE *srtp_profile;
1181 * Is use of the Heartbeat extension negotiated?
1184 * 2: enabled, but not allowed to send Requests
1186 unsigned int tlsext_heartbeat;
1187 /* Indicates if a HeartbeatRequest is in flight */
1188 unsigned int tlsext_hb_pending;
1189 /* HeartbeatRequest sequence number */
1190 unsigned int tlsext_hb_seq;
1192 * For a client, this contains the list of supported protocols in wire
1195 unsigned char *alpn_client_proto_list;
1196 unsigned alpn_client_proto_list_len;
1198 # define session_ctx ctx
1199 # endif /* OPENSSL_NO_TLSEXT */
1201 * 1 if we are renegotiating.
1202 * 2 if we are a server and are inside a handshake
1203 * (i.e. not just sending a HelloRequest)
1206 # ifndef OPENSSL_NO_SRP
1207 /* ctx for SRP authentication */
1211 * Callback for disabling session caching and ticket support on a session
1212 * basis, depending on the chosen cipher.
1214 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1217 typedef struct ssl3_record_st {
1218 /* type of record */
1222 /* How many bytes available */
1225 */ unsigned int length;
1227 * How many bytes were available before padding was removed? This is used
1228 * to implement the MAC check in constant time for CBC records.
1232 */ unsigned int orig_len;
1233 /* read/write offset into 'buf' */
1236 */ unsigned int off;
1237 /* pointer to the record data */
1240 */ unsigned char *data;
1241 /* where the decode bytes are */
1244 */ unsigned char *input;
1245 /* only used with decompression - malloc()ed */
1248 */ unsigned char *comp;
1249 /* epoch number, needed by DTLS1 */
1252 */ unsigned long epoch;
1253 /* sequence number, needed by DTLS1 */
1256 */ unsigned char seq_num[8];
1259 typedef struct ssl3_buffer_st {
1260 /* at least SSL3_RT_MAX_PACKET_SIZE bytes, see ssl3_setup_buffers() */
1264 /* where to 'copy from' */
1266 /* how many bytes left */
1270 typedef struct ssl3_state_st {
1272 int delay_buf_pop_ret;
1273 unsigned char read_sequence[8];
1274 int read_mac_secret_size;
1275 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1276 unsigned char write_sequence[8];
1277 int write_mac_secret_size;
1278 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1279 unsigned char server_random[SSL3_RANDOM_SIZE];
1280 unsigned char client_random[SSL3_RANDOM_SIZE];
1281 /* flags for countermeasure against known-IV weakness */
1282 int need_empty_fragments;
1283 int empty_fragment_done;
1284 /* The value of 'extra' when the buffers were initialized */
1286 SSL3_BUFFER rbuf; /* read IO goes into here */
1287 SSL3_BUFFER wbuf; /* write IO goes into here */
1288 SSL3_RECORD rrec; /* each decoded record goes in here */
1289 SSL3_RECORD wrec; /* goes out from here */
1291 * storage for Alert/Handshake protocol data received but not yet
1292 * processed by ssl3_read_bytes:
1294 unsigned char alert_fragment[2];
1295 unsigned int alert_fragment_len;
1296 unsigned char handshake_fragment[4];
1297 unsigned int handshake_fragment_len;
1298 /* partial write - check the numbers match */
1299 unsigned int wnum; /* number of bytes sent so far */
1300 int wpend_tot; /* number bytes written */
1302 int wpend_ret; /* number of bytes submitted */
1303 const unsigned char *wpend_buf;
1304 /* used during startup, digest all incoming/outgoing packets */
1305 BIO *handshake_buffer;
1307 * When set of handshake digests is determined, buffer is hashed and
1308 * freed and MD_CTX-es for all required digests are stored in this array
1310 EVP_MD_CTX **handshake_dgst;
1312 * Set whenever an expected ChangeCipherSpec message is processed.
1313 * Unset when the peer's Finished message is received.
1314 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1316 int change_cipher_spec;
1320 * we allow one fatal and one warning alert to be outstanding, send close
1321 * alert via the warning alert
1324 unsigned char send_alert[2];
1326 * This flag is set when we should renegotiate ASAP, basically when there
1327 * is no more data in the read or write buffers
1330 int total_renegotiations;
1331 int num_renegotiations;
1332 int in_read_app_data;
1334 /* actually only needs to be 16+20 */
1335 unsigned char cert_verify_md[EVP_MAX_MD_SIZE * 2];
1336 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1337 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1339 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1340 int peer_finish_md_len;
1341 unsigned long message_size;
1343 /* used to hold the new cipher we are going to use */
1344 const SSL_CIPHER *new_cipher;
1345 # ifndef OPENSSL_NO_DH
1348 # ifndef OPENSSL_NO_ECDH
1349 EC_KEY *ecdh; /* holds short lived ECDH key */
1351 /* used when SSL_ST_FLUSH_DATA is entered */
1354 /* used for certificate requests */
1357 char ctype[SSL3_CT_NUMBER];
1358 STACK_OF(X509_NAME) *ca_names;
1360 int key_block_length;
1361 unsigned char *key_block;
1362 const EVP_CIPHER *new_sym_enc;
1363 const EVP_MD *new_hash;
1364 int new_mac_pkey_type;
1365 int new_mac_secret_size;
1366 # ifndef OPENSSL_NO_COMP
1367 const SSL_COMP *new_compression;
1369 char *new_compression;
1374 /* Connection binding to prevent renegotiation attacks */
1375 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1376 unsigned char previous_client_finished_len;
1377 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1378 unsigned char previous_server_finished_len;
1379 int send_connection_binding; /* TODOEKR */
1381 # ifndef OPENSSL_NO_NEXTPROTONEG
1383 * Set if we saw the Next Protocol Negotiation extension from our peer.
1385 int next_proto_neg_seen;
1388 # ifndef OPENSSL_NO_TLSEXT
1391 * ALPN information (we are in the process of transitioning from NPN to
1396 * In a server these point to the selected ALPN protocol after the
1397 * ClientHello has been processed. In a client these contain the protocol
1398 * that the server selected once the ServerHello has been processed.
1400 unsigned char *alpn_selected;
1401 unsigned alpn_selected_len;
1403 # ifndef OPENSSL_NO_EC
1405 * This is set to true if we believe that this is a version of Safari
1406 * running on OS X 10.6 or newer. We wish to know this because Safari on
1407 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1409 char is_probably_safari;
1410 # endif /* !OPENSSL_NO_EC */
1412 # endif /* !OPENSSL_NO_TLSEXT */
1416 /* DTLS structures */
1418 # ifndef OPENSSL_NO_SCTP
1419 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1422 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1423 # define DTLS1_MAX_MTU_OVERHEAD 48
1425 typedef struct dtls1_bitmap_st {
1426 unsigned long map; /* track 32 packets on 32-bit systems and 64
1427 * - on 64-bit systems */
1428 unsigned char max_seq_num[8]; /* max record number seen so far, 64-bit
1429 * value in big-endian encoding */
1432 struct dtls1_retransmit_state {
1433 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1434 EVP_MD_CTX *write_hash; /* used for mac generation */
1435 # ifndef OPENSSL_NO_COMP
1436 COMP_CTX *compress; /* compression */
1440 SSL_SESSION *session;
1441 unsigned short epoch;
1444 struct hm_header_st {
1446 unsigned long msg_len;
1448 unsigned long frag_off;
1449 unsigned long frag_len;
1450 unsigned int is_ccs;
1451 struct dtls1_retransmit_state saved_retransmit_state;
1454 struct ccs_header_st {
1459 struct dtls1_timeout_st {
1460 /* Number of read timeouts so far */
1461 unsigned int read_timeouts;
1462 /* Number of write timeouts so far */
1463 unsigned int write_timeouts;
1464 /* Number of alerts received so far */
1465 unsigned int num_alerts;
1468 typedef struct record_pqueue_st {
1469 unsigned short epoch;
1473 typedef struct hm_fragment_st {
1474 struct hm_header_st msg_header;
1475 unsigned char *fragment;
1476 unsigned char *reassembly;
1479 typedef struct dtls1_state_st {
1480 unsigned int send_cookie;
1481 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1482 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH];
1483 unsigned int cookie_len;
1485 * The current data and handshake epoch. This is initially
1486 * undefined, and starts at zero once the initial handshake is
1489 unsigned short r_epoch;
1490 unsigned short w_epoch;
1491 /* records being received in the current epoch */
1492 DTLS1_BITMAP bitmap;
1493 /* renegotiation starts a new set of sequence numbers */
1494 DTLS1_BITMAP next_bitmap;
1495 /* handshake message numbers */
1496 unsigned short handshake_write_seq;
1497 unsigned short next_handshake_write_seq;
1498 unsigned short handshake_read_seq;
1499 /* save last sequence number for retransmissions */
1500 unsigned char last_write_sequence[8];
1501 /* Received handshake records (processed and unprocessed) */
1502 record_pqueue unprocessed_rcds;
1503 record_pqueue processed_rcds;
1504 /* Buffered handshake messages */
1505 pqueue buffered_messages;
1506 /* Buffered (sent) handshake records */
1507 pqueue sent_messages;
1509 * Buffered application records. Only for records between CCS and
1510 * Finished to prevent either protocol violation or unnecessary message
1513 record_pqueue buffered_app_data;
1514 /* Is set when listening for new connections with dtls1_listen() */
1515 unsigned int listen;
1516 unsigned int link_mtu; /* max on-the-wire DTLS packet size */
1517 unsigned int mtu; /* max DTLS packet size */
1518 struct hm_header_st w_msg_hdr;
1519 struct hm_header_st r_msg_hdr;
1520 struct dtls1_timeout_st timeout;
1522 * Indicates when the last handshake msg or heartbeat sent will timeout
1524 struct timeval next_timeout;
1525 /* Timeout duration */
1526 unsigned short timeout_duration;
1528 * storage for Alert/Handshake protocol data received but not yet
1529 * processed by ssl3_read_bytes:
1531 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];
1532 unsigned int alert_fragment_len;
1533 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH];
1534 unsigned int handshake_fragment_len;
1535 unsigned int retransmitting;
1537 * Set when the handshake is ready to process peer's ChangeCipherSpec message.
1538 * Cleared after the message has been processed.
1540 unsigned int change_cipher_spec_ok;
1541 # ifndef OPENSSL_NO_SCTP
1542 /* used when SSL_ST_XX_FLUSH is entered */
1544 int shutdown_received;
1548 typedef struct dtls1_record_data_st {
1549 unsigned char *packet;
1550 unsigned int packet_length;
1553 # ifndef OPENSSL_NO_SCTP
1554 struct bio_dgram_sctp_rcvinfo recordinfo;
1556 } DTLS1_RECORD_DATA;
1559 # ifndef OPENSSL_NO_EC
1561 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1563 # define EXPLICIT_PRIME_CURVE_TYPE 1
1564 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1565 # define NAMED_CURVE_TYPE 3
1566 # endif /* OPENSSL_NO_EC */
1568 typedef struct cert_pkey_st {
1570 EVP_PKEY *privatekey;
1571 /* Digest to use when signing */
1572 const EVP_MD *digest;
1573 /* Chain for this certificate */
1574 STACK_OF(X509) *chain;
1575 # ifndef OPENSSL_NO_TLSEXT
1577 * serverinfo data for this certificate. The data is in TLS Extension
1578 * wire format, specifically it's a series of records like:
1579 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1581 * uint8_t data[length];
1583 unsigned char *serverinfo;
1584 size_t serverinfo_length;
1587 * Set if CERT_PKEY can be used with current SSL session: e.g.
1588 * appropriate curve, signature algorithms etc. If zero it can't be used
1593 /* Retrieve Suite B flags */
1594 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1595 /* Uses to check strict mode: suite B modes are always strict */
1596 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1597 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1600 unsigned short ext_type;
1602 * Per-connection flags relating to this extension type: not used if
1603 * part of an SSL_CTX structure.
1605 unsigned short ext_flags;
1606 custom_ext_add_cb add_cb;
1607 custom_ext_free_cb free_cb;
1609 custom_ext_parse_cb parse_cb;
1611 } custom_ext_method;
1613 /* ext_flags values */
1616 * Indicates an extension has been received. Used to check for unsolicited or
1617 * duplicate extensions.
1619 # define SSL_EXT_FLAG_RECEIVED 0x1
1621 * Indicates an extension has been sent: used to enable sending of
1622 * corresponding ServerHello extension.
1624 # define SSL_EXT_FLAG_SENT 0x2
1627 custom_ext_method *meths;
1629 } custom_ext_methods;
1631 typedef struct cert_st {
1632 /* Current active set */
1634 * ALWAYS points to an element of the pkeys array
1635 * Probably it would make more sense to store
1636 * an index, not a pointer.
1640 * For servers the following masks are for the key and auth algorithms
1641 * that are supported by the certs below. For clients they are masks of
1642 * *disabled* algorithms based on the current session.
1645 unsigned long mask_k;
1646 unsigned long mask_a;
1647 unsigned long export_mask_k;
1648 unsigned long export_mask_a;
1650 unsigned long mask_ssl;
1651 # ifndef OPENSSL_NO_RSA
1653 RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize);
1655 # ifndef OPENSSL_NO_DH
1657 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1660 # ifndef OPENSSL_NO_ECDH
1662 /* Callback for generating ephemeral ECDH keys */
1663 EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1664 /* Select ECDH parameters automatically */
1667 /* Flags related to certificates */
1668 unsigned int cert_flags;
1669 CERT_PKEY pkeys[SSL_PKEY_NUM];
1671 * Certificate types (received or sent) in certificate request message.
1672 * On receive this is only set if number of certificate types exceeds
1675 unsigned char *ctypes;
1678 * signature algorithms peer reports: e.g. supported signature algorithms
1679 * extension for server or as part of a certificate request for client.
1681 unsigned char *peer_sigalgs;
1682 /* Size of above array */
1683 size_t peer_sigalgslen;
1685 * suppported signature algorithms. When set on a client this is sent in
1686 * the client hello as the supported signature algorithms extension. For
1687 * servers it represents the signature algorithms we are willing to use.
1689 unsigned char *conf_sigalgs;
1690 /* Size of above array */
1691 size_t conf_sigalgslen;
1693 * Client authentication signature algorithms, if not set then uses
1694 * conf_sigalgs. On servers these will be the signature algorithms sent
1695 * to the client in a cerificate request for TLS 1.2. On a client this
1696 * represents the signature algortithms we are willing to use for client
1699 unsigned char *client_sigalgs;
1700 /* Size of above array */
1701 size_t client_sigalgslen;
1703 * Signature algorithms shared by client and server: cached because these
1704 * are used most often.
1706 TLS_SIGALGS *shared_sigalgs;
1707 size_t shared_sigalgslen;
1709 * Certificate setup callback: if set is called whenever a certificate
1710 * may be required (client or server). the callback can then examine any
1711 * appropriate parameters and setup any certificates required. This
1712 * allows advanced applications to select certificates on the fly: for
1713 * example based on supported signature algorithms or curves.
1715 int (*cert_cb) (SSL *ssl, void *arg);
1718 * Optional X509_STORE for chain building or certificate validation If
1719 * NULL the parent SSL_CTX store is used instead.
1721 X509_STORE *chain_store;
1722 X509_STORE *verify_store;
1723 /* Raw values of the cipher list from a client */
1724 unsigned char *ciphers_raw;
1725 size_t ciphers_rawlen;
1726 /* Custom extension methods for server and client */
1727 custom_ext_methods cli_ext;
1728 custom_ext_methods srv_ext;
1729 /* Security callback */
1730 int (*sec_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1731 void *other, void *ex);
1732 /* Security level */
1735 int references; /* >1 only if SSL_copy_session_id is used */
1738 typedef struct sess_cert_st {
1739 STACK_OF(X509) *cert_chain; /* as received from peer */
1740 /* The 'peer_...' members are used only by clients. */
1742 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never
1744 CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
1746 * Obviously we don't have the private keys of these, so maybe we
1747 * shouldn't even use the CERT_PKEY type here.
1749 # ifndef OPENSSL_NO_RSA
1750 RSA *peer_rsa_tmp; /* not used for SSL 2 */
1752 # ifndef OPENSSL_NO_DH
1753 DH *peer_dh_tmp; /* not used for SSL 2 */
1755 # ifndef OPENSSL_NO_ECDH
1756 EC_KEY *peer_ecdh_tmp;
1758 int references; /* actually always 1 at the moment */
1760 /* Structure containing decoded values of signature algorithms extension */
1761 struct tls_sigalgs_st {
1762 /* NID of hash algorithm */
1764 /* NID of signature algorithm */
1766 /* Combined hash and signature NID */
1767 int signandhash_nid;
1768 /* Raw values used in extension */
1769 unsigned char rsign;
1770 unsigned char rhash;
1781 * #define ABORT_DEBUG
1784 * #define PKT_DEBUG 1
1790 * #define DES_OFB_DEBUG
1799 * #define IDEA_DEBUG
1802 # define FP_ICC (int (*)(const void *,const void *))
1803 # define ssl_put_cipher_by_char(ssl,ciph,ptr) \
1804 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
1807 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1808 * of a mess of functions, but hell, think of it as an opaque structure :-)
1810 typedef struct ssl3_enc_method {
1811 int (*enc) (SSL *, int);
1812 int (*mac) (SSL *, unsigned char *, int);
1813 int (*setup_key_block) (SSL *);
1814 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1816 int (*change_cipher_state) (SSL *, int);
1817 int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
1818 int finish_mac_length;
1819 int (*cert_verify_mac) (SSL *, int, unsigned char *);
1820 const char *client_finished_label;
1821 int client_finished_label_len;
1822 const char *server_finished_label;
1823 int server_finished_label_len;
1824 int (*alert_value) (int);
1825 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1826 const char *, size_t,
1827 const unsigned char *, size_t,
1829 /* Various flags indicating protocol version requirements */
1830 unsigned int enc_flags;
1831 /* Handshake header length */
1833 /* Set the handshake header */
1834 void (*set_handshake_header) (SSL *s, int type, unsigned long len);
1835 /* Write out handshake message */
1836 int (*do_write) (SSL *s);
1839 # define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
1840 # define ssl_handshake_start(s) \
1841 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
1842 # define ssl_set_handshake_header(s, htype, len) \
1843 s->method->ssl3_enc->set_handshake_header(s, htype, len)
1844 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1846 /* Values for enc_flags */
1848 /* Uses explicit IV for CBC mode */
1849 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1850 /* Uses signature algorithms extension */
1851 # define SSL_ENC_FLAG_SIGALGS 0x2
1852 /* Uses SHA256 default PRF */
1853 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1855 # define SSL_ENC_FLAG_DTLS 0x8
1857 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1858 * apply to others in future.
1860 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1862 # ifndef OPENSSL_NO_COMP
1863 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1864 typedef struct ssl3_comp_st {
1865 int comp_id; /* The identifier byte for this compression
1867 char *name; /* Text name used for the compression type */
1868 COMP_METHOD *method; /* The method :-) */
1872 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1873 OPENSSL_EXTERN const SSL_CIPHER ssl3_ciphers[];
1875 SSL_METHOD *ssl_bad_method(int ver);
1877 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1878 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1879 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1880 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1881 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1882 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1884 # define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
1885 s_get_meth, enc_data) \
1886 const SSL_METHOD *func_name(void) \
1888 static const SSL_METHOD func_name##_data= { \
1900 ssl3_renegotiate_check, \
1904 ssl3_dispatch_alert, \
1907 ssl3_get_cipher_by_char, \
1908 ssl3_put_cipher_by_char, \
1913 tls1_default_timeout, \
1915 ssl_undefined_void_function, \
1916 ssl3_callback_ctrl, \
1917 ssl3_ctx_callback_ctrl, \
1919 return &func_name##_data; \
1922 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
1923 const SSL_METHOD *func_name(void) \
1925 static const SSL_METHOD func_name##_data= { \
1937 ssl3_renegotiate_check, \
1941 ssl3_dispatch_alert, \
1944 ssl3_get_cipher_by_char, \
1945 ssl3_put_cipher_by_char, \
1950 ssl3_default_timeout, \
1952 ssl_undefined_void_function, \
1953 ssl3_callback_ctrl, \
1954 ssl3_ctx_callback_ctrl, \
1956 return &func_name##_data; \
1959 # define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
1960 const SSL_METHOD *func_name(void) \
1962 static const SSL_METHOD func_name##_data= { \
1972 ssl_undefined_function, \
1973 ssl_undefined_function, \
1978 ssl3_dispatch_alert, \
1981 ssl23_get_cipher_by_char, \
1982 ssl23_put_cipher_by_char, \
1983 ssl_undefined_const_function, \
1984 ssl23_num_ciphers, \
1987 ssl23_default_timeout, \
1988 &TLSv1_2_enc_data, \
1989 ssl_undefined_void_function, \
1990 ssl3_callback_ctrl, \
1991 ssl3_ctx_callback_ctrl, \
1993 return &func_name##_data; \
1996 # define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \
1997 s_get_meth, enc_data) \
1998 const SSL_METHOD *func_name(void) \
2000 static const SSL_METHOD func_name##_data= { \
2012 ssl3_renegotiate_check, \
2013 dtls1_get_message, \
2015 dtls1_write_app_data_bytes, \
2016 dtls1_dispatch_alert, \
2019 ssl3_get_cipher_by_char, \
2020 ssl3_put_cipher_by_char, \
2025 dtls1_default_timeout, \
2027 ssl_undefined_void_function, \
2028 ssl3_callback_ctrl, \
2029 ssl3_ctx_callback_ctrl, \
2031 return &func_name##_data; \
2034 struct openssl_ssl_test_functions {
2035 int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
2036 int (*p_ssl3_setup_buffers) (SSL *s);
2037 int (*p_tls1_process_heartbeat) (SSL *s);
2038 int (*p_dtls1_process_heartbeat) (SSL *s);
2041 # ifndef OPENSSL_UNIT_TEST
2043 void ssl_clear_cipher_ctx(SSL *s);
2044 int ssl_clear_bad_session(SSL *s);
2045 CERT *ssl_cert_new(void);
2046 CERT *ssl_cert_dup(CERT *cert);
2047 void ssl_cert_set_default_md(CERT *cert);
2048 int ssl_cert_inst(CERT **o);
2049 void ssl_cert_clear_certs(CERT *c);
2050 void ssl_cert_free(CERT *c);
2051 SESS_CERT *ssl_sess_cert_new(void);
2052 void ssl_sess_cert_free(SESS_CERT *sc);
2053 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
2054 int ssl_get_new_session(SSL *s, int session);
2055 int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
2056 const unsigned char *limit);
2057 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2058 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2059 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2060 const SSL_CIPHER *const *bp);
2061 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
2063 STACK_OF(SSL_CIPHER) **skp);
2064 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
2066 int (*put_cb) (const SSL_CIPHER *,
2068 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
2069 STACK_OF(SSL_CIPHER) **pref,
2070 STACK_OF(SSL_CIPHER) **sorted,
2071 const char *rule_str, CERT *c);
2072 void ssl_update_cache(SSL *s, int mode);
2073 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
2074 const EVP_MD **md, int *mac_pkey_type,
2075 int *mac_secret_size, SSL_COMP **comp, int use_etm);
2076 int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
2077 int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
2078 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
2079 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2080 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2081 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2082 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2083 int ssl_cert_select_current(CERT *c, X509 *x);
2084 int ssl_cert_set_current(CERT *c, long arg);
2085 X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
2086 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
2089 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2090 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
2091 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2092 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
2094 int ssl_security(SSL *s, int op, int bits, int nid, void *other);
2095 int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other);
2097 int ssl_undefined_function(SSL *s);
2098 int ssl_undefined_void_function(void);
2099 int ssl_undefined_const_function(const SSL *s);
2100 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
2101 # ifndef OPENSSL_NO_TLSEXT
2102 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2103 size_t *serverinfo_length);
2105 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
2106 int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
2107 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
2108 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2109 int ssl_verify_alarm_type(long type);
2110 void ssl_load_ciphers(void);
2111 int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
2113 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2114 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
2115 void ssl3_init_finished_mac(SSL *s);
2116 int ssl3_send_server_certificate(SSL *s);
2117 int ssl3_send_newsession_ticket(SSL *s);
2118 int ssl3_send_cert_status(SSL *s);
2119 int ssl3_get_finished(SSL *s, int state_a, int state_b);
2120 int ssl3_setup_key_block(SSL *s);
2121 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
2122 int ssl3_change_cipher_state(SSL *s, int which);
2123 void ssl3_cleanup_key_block(SSL *s);
2124 int ssl3_do_write(SSL *s, int type);
2125 int ssl3_send_alert(SSL *s, int level, int desc);
2126 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2127 unsigned char *p, int len);
2128 int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
2129 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
2130 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
2131 int ssl3_num_ciphers(void);
2132 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2133 int ssl3_renegotiate(SSL *ssl);
2134 int ssl3_renegotiate_check(SSL *ssl);
2135 int ssl3_dispatch_alert(SSL *s);
2136 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
2137 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
2138 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
2140 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
2141 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
2142 int ssl3_enc(SSL *s, int send_data);
2143 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
2144 void ssl3_free_digest_list(SSL *s);
2145 unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
2146 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
2147 STACK_OF(SSL_CIPHER) *srvr);
2148 int ssl3_setup_buffers(SSL *s);
2149 int ssl3_setup_read_buffer(SSL *s);
2150 int ssl3_setup_write_buffer(SSL *s);
2151 int ssl3_release_read_buffer(SSL *s);
2152 int ssl3_release_write_buffer(SSL *s);
2153 int ssl3_digest_cached_records(SSL *s);
2154 int ssl3_new(SSL *s);
2155 void ssl3_free(SSL *s);
2156 int ssl3_accept(SSL *s);
2157 int ssl3_connect(SSL *s);
2158 int ssl3_read(SSL *s, void *buf, int len);
2159 int ssl3_peek(SSL *s, void *buf, int len);
2160 int ssl3_write(SSL *s, const void *buf, int len);
2161 int ssl3_shutdown(SSL *s);
2162 void ssl3_clear(SSL *s);
2163 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2164 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2165 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2166 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2167 int ssl3_pending(const SSL *s);
2169 void ssl3_record_sequence_update(unsigned char *seq);
2170 int ssl3_do_change_cipher_spec(SSL *ssl);
2171 long ssl3_default_timeout(void);
2173 void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
2174 int ssl3_handshake_write(SSL *s);
2176 int ssl23_num_ciphers(void);
2177 const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
2178 int ssl23_read(SSL *s, void *buf, int len);
2179 int ssl23_peek(SSL *s, void *buf, int len);
2180 int ssl23_write(SSL *s, const void *buf, int len);
2181 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
2182 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
2183 long ssl23_default_timeout(void);
2185 int ssl_allow_compression(SSL *s);
2187 long tls1_default_timeout(void);
2188 int dtls1_do_write(SSL *s, int type);
2189 int ssl3_read_n(SSL *s, int n, int max, int extend);
2190 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
2191 int ssl3_do_compress(SSL *ssl);
2192 int ssl3_do_uncompress(SSL *ssl);
2193 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
2195 unsigned char *dtls1_set_message_header(SSL *s,
2196 unsigned char *p, unsigned char mt,
2198 unsigned long frag_off,
2199 unsigned long frag_len);
2201 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
2202 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
2204 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
2205 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
2206 int dtls1_read_failed(SSL *s, int code);
2207 int dtls1_buffer_message(SSL *s, int ccs);
2208 int dtls1_retransmit_message(SSL *s, unsigned short seq,
2209 unsigned long frag_off, int *found);
2210 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2211 int dtls1_retransmit_buffered_messages(SSL *s);
2212 void dtls1_clear_record_buffer(SSL *s);
2213 void dtls1_get_message_header(unsigned char *data,
2214 struct hm_header_st *msg_hdr);
2215 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
2216 void dtls1_reset_seq_numbers(SSL *s, int rw);
2217 long dtls1_default_timeout(void);
2218 struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2219 int dtls1_check_timeout_num(SSL *s);
2220 int dtls1_handle_timeout(SSL *s);
2221 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
2222 void dtls1_start_timer(SSL *s);
2223 void dtls1_stop_timer(SSL *s);
2224 int dtls1_is_timer_expired(SSL *s);
2225 void dtls1_double_timeout(SSL *s);
2226 int dtls1_send_newsession_ticket(SSL *s);
2227 unsigned int dtls1_min_mtu(SSL *s);
2228 unsigned int dtls1_link_min_mtu(void);
2229 void dtls1_hm_fragment_free(hm_fragment *frag);
2231 /* some client-only functions */
2232 int ssl3_client_hello(SSL *s);
2233 int ssl3_get_server_hello(SSL *s);
2234 int ssl3_get_certificate_request(SSL *s);
2235 int ssl3_get_new_session_ticket(SSL *s);
2236 int ssl3_get_cert_status(SSL *s);
2237 int ssl3_get_server_done(SSL *s);
2238 int ssl3_send_client_verify(SSL *s);
2239 int ssl3_send_client_certificate(SSL *s);
2240 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
2241 int ssl3_send_client_key_exchange(SSL *s);
2242 int ssl3_get_key_exchange(SSL *s);
2243 int ssl3_get_server_certificate(SSL *s);
2244 int ssl3_check_cert_and_algorithm(SSL *s);
2245 # ifndef OPENSSL_NO_TLSEXT
2246 # ifndef OPENSSL_NO_NEXTPROTONEG
2247 int ssl3_send_next_proto(SSL *s);
2251 int dtls1_client_hello(SSL *s);
2253 /* some server-only functions */
2254 int ssl3_get_client_hello(SSL *s);
2255 int ssl3_send_server_hello(SSL *s);
2256 int ssl3_send_hello_request(SSL *s);
2257 int ssl3_send_server_key_exchange(SSL *s);
2258 int ssl3_send_certificate_request(SSL *s);
2259 int ssl3_send_server_done(SSL *s);
2260 int ssl3_get_client_certificate(SSL *s);
2261 int ssl3_get_client_key_exchange(SSL *s);
2262 int ssl3_get_cert_verify(SSL *s);
2263 # ifndef OPENSSL_NO_NEXTPROTONEG
2264 int ssl3_get_next_proto(SSL *s);
2267 int ssl23_accept(SSL *s);
2268 int ssl23_connect(SSL *s);
2269 int ssl23_read_bytes(SSL *s, int n);
2270 int ssl23_write_bytes(SSL *s);
2272 int tls1_new(SSL *s);
2273 void tls1_free(SSL *s);
2274 void tls1_clear(SSL *s);
2275 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2276 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2278 int dtls1_new(SSL *s);
2279 int dtls1_accept(SSL *s);
2280 int dtls1_connect(SSL *s);
2281 void dtls1_free(SSL *s);
2282 void dtls1_clear(SSL *s);
2283 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2284 int dtls1_shutdown(SSL *s);
2286 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
2287 int dtls1_get_record(SSL *s);
2288 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
2289 unsigned int len, int create_empty_fragement);
2290 int dtls1_dispatch_alert(SSL *s);
2292 int ssl_init_wbio_buffer(SSL *s, int push);
2293 void ssl_free_wbio_buffer(SSL *s);
2295 int tls1_change_cipher_state(SSL *s, int which);
2296 int tls1_setup_key_block(SSL *s);
2297 int tls1_enc(SSL *s, int snd);
2298 int tls1_final_finish_mac(SSL *s,
2299 const char *str, int slen, unsigned char *p);
2300 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
2301 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
2302 int tls1_generate_master_secret(SSL *s, unsigned char *out,
2303 unsigned char *p, int len);
2304 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2305 const char *label, size_t llen,
2306 const unsigned char *p, size_t plen,
2308 int tls1_alert_code(int code);
2309 int ssl3_alert_code(int code);
2312 # ifndef OPENSSL_NO_ECDH
2313 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2316 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2318 # ifndef OPENSSL_NO_EC
2319 int tls1_ec_curve_id2nid(int curve_id);
2320 int tls1_ec_nid2curve_id(int nid);
2321 int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2322 int tls1_shared_curve(SSL *s, int nmatch);
2323 int tls1_set_curves(unsigned char **pext, size_t *pextlen,
2324 int *curves, size_t ncurves);
2325 int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
2327 # ifndef OPENSSL_NO_ECDH
2328 int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2329 # endif /* OPENSSL_NO_ECDH */
2330 # endif /* OPENSSL_NO_EC */
2332 # ifndef OPENSSL_NO_TLSEXT
2333 int tls1_shared_list(SSL *s,
2334 const unsigned char *l1, size_t l1len,
2335 const unsigned char *l2, size_t l2len, int nmatch);
2336 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
2337 unsigned char *limit, int *al);
2338 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
2339 unsigned char *limit, int *al);
2340 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
2341 unsigned char *d, int n);
2342 int tls1_set_server_sigalgs(SSL *s);
2343 int ssl_check_clienthello_tlsext_late(SSL *s);
2344 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
2345 unsigned char *d, int n);
2346 int ssl_prepare_clienthello_tlsext(SSL *s);
2347 int ssl_prepare_serverhello_tlsext(SSL *s);
2349 # ifndef OPENSSL_NO_HEARTBEATS
2350 int tls1_heartbeat(SSL *s);
2351 int dtls1_heartbeat(SSL *s);
2352 int tls1_process_heartbeat(SSL *s);
2353 int dtls1_process_heartbeat(SSL *s);
2356 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
2357 const unsigned char *limit, SSL_SESSION **ret);
2359 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
2361 int tls12_get_sigid(const EVP_PKEY *pk);
2362 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
2363 void ssl_set_sig_mask(unsigned long *pmask_a, SSL *s, int op);
2365 int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2366 int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
2367 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2369 void tls1_set_cert_validity(SSL *s);
2372 # ifndef OPENSSL_NO_DH
2373 DH *ssl_get_auto_dh(SSL *s);
2376 int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2377 int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy);
2379 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2380 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2381 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2383 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
2385 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2387 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
2389 long ssl_get_algorithm2(SSL *s);
2390 size_t tls12_copy_sigalgs(SSL *s, unsigned char *out,
2391 const unsigned char *psig, size_t psiglen);
2392 int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
2393 int tls1_process_sigalgs(SSL *s);
2394 size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
2395 int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
2396 const unsigned char *sig, EVP_PKEY *pkey);
2397 void ssl_set_client_disabled(SSL *s);
2398 int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
2400 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2402 int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,
2404 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2406 int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,
2410 void ssl3_cbc_copy_mac(unsigned char *out,
2411 const SSL3_RECORD *rec, unsigned md_size);
2412 int ssl3_cbc_remove_padding(const SSL *s,
2414 unsigned block_size, unsigned mac_size);
2415 int tls1_cbc_remove_padding(const SSL *s,
2417 unsigned block_size, unsigned mac_size);
2418 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2419 void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2420 unsigned char *md_out,
2421 size_t *md_out_size,
2422 const unsigned char header[13],
2423 const unsigned char *data,
2424 size_t data_plus_mac_size,
2425 size_t data_plus_mac_plus_padding_size,
2426 const unsigned char *mac_secret,
2427 unsigned mac_secret_length, char is_sslv3);
2429 void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
2430 EVP_MD_CTX *mac_ctx, const unsigned char *data,
2431 size_t data_len, size_t orig_len);
2433 int srp_verify_server_param(SSL *s, int *al);
2437 void custom_ext_init(custom_ext_methods *meths);
2439 int custom_ext_parse(SSL *s, int server,
2440 unsigned int ext_type,
2441 const unsigned char *ext_data, size_t ext_size, int *al);
2442 int custom_ext_add(SSL *s, int server,
2443 unsigned char **pret, unsigned char *limit, int *al);
2445 int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
2446 void custom_exts_free(custom_ext_methods *exts);
2450 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2451 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2452 # define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
2453 # define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat