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1 /*
2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12 #ifndef HEADER_SSL_LOCL_H
13 # define HEADER_SSL_LOCL_H
14
15 # include "e_os.h" /* struct timeval for DTLS */
16 # include <stdlib.h>
17 # include <time.h>
18 # include <string.h>
19 # include <errno.h>
20
21 # include <openssl/buffer.h>
22 # include <openssl/comp.h>
23 # include <openssl/bio.h>
24 # include <openssl/rsa.h>
25 # include <openssl/dsa.h>
26 # include <openssl/err.h>
27 # include <openssl/ssl.h>
28 # include <openssl/async.h>
29 # include <openssl/symhacks.h>
30 # include <openssl/ct.h>
31 # include "record/record.h"
32 # include "statem/statem.h"
33 # include "packet_locl.h"
34 # include "internal/dane.h"
35 # include "internal/refcount.h"
36 # include "internal/tsan_assist.h"
37
38 # ifdef OPENSSL_BUILD_SHLIBSSL
39 # undef OPENSSL_EXTERN
40 # define OPENSSL_EXTERN OPENSSL_EXPORT
41 # endif
42
43 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
44 l|=(((unsigned long)(*((c)++)))<< 8), \
45 l|=(((unsigned long)(*((c)++)))<<16), \
46 l|=(((unsigned long)(*((c)++)))<<24))
47
48 /* NOTE - c is not incremented as per c2l */
49 # define c2ln(c,l1,l2,n) { \
50 c+=n; \
51 l1=l2=0; \
52 switch (n) { \
53 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
54 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
55 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
56 case 5: l2|=((unsigned long)(*(--(c)))); \
57 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
58 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
59 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
60 case 1: l1|=((unsigned long)(*(--(c)))); \
61 } \
62 }
63
64 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
65 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
66 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>24)&0xff))
68
69 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
70 l|=((unsigned long)(*((c)++)))<<16, \
71 l|=((unsigned long)(*((c)++)))<< 8, \
72 l|=((unsigned long)(*((c)++))))
73
74 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
75 l|=((uint64_t)(*((c)++)))<<48, \
76 l|=((uint64_t)(*((c)++)))<<40, \
77 l|=((uint64_t)(*((c)++)))<<32, \
78 l|=((uint64_t)(*((c)++)))<<24, \
79 l|=((uint64_t)(*((c)++)))<<16, \
80 l|=((uint64_t)(*((c)++)))<< 8, \
81 l|=((uint64_t)(*((c)++))))
82
83
84 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
85 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
86 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
87 *((c)++)=(unsigned char)(((l) )&0xff))
88
89 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
90 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
93 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
94 *((c)++)=(unsigned char)(((l) )&0xff))
95
96 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
97 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
102 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
103 *((c)++)=(unsigned char)(((l) )&0xff))
104
105 /* NOTE - c is not incremented as per l2c */
106 # define l2cn(l1,l2,c,n) { \
107 c+=n; \
108 switch (n) { \
109 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
110 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
111 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
112 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
113 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
114 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
115 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
116 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
117 } \
118 }
119
120 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
121 (((unsigned int)((c)[1])) )),(c)+=2)
122 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
123 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
124
125 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
126 (((unsigned long)((c)[1]))<< 8)| \
127 (((unsigned long)((c)[2])) )),(c)+=3)
128
129 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
130 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
131 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
132
133 /*
134 * DTLS version numbers are strange because they're inverted. Except for
135 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
136 */
137 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
138 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
139 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
140 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
141 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
142
143
144 /*
145 * Define the Bitmasks for SSL_CIPHER.algorithms.
146 * This bits are used packed as dense as possible. If new methods/ciphers
147 * etc will be added, the bits a likely to change, so this information
148 * is for internal library use only, even though SSL_CIPHER.algorithms
149 * can be publicly accessed.
150 * Use the according functions for cipher management instead.
151 *
152 * The bit mask handling in the selection and sorting scheme in
153 * ssl_create_cipher_list() has only limited capabilities, reflecting
154 * that the different entities within are mutually exclusive:
155 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
156 */
157
158 /* Bits for algorithm_mkey (key exchange algorithm) */
159 /* RSA key exchange */
160 # define SSL_kRSA 0x00000001U
161 /* tmp DH key no DH cert */
162 # define SSL_kDHE 0x00000002U
163 /* synonym */
164 # define SSL_kEDH SSL_kDHE
165 /* ephemeral ECDH */
166 # define SSL_kECDHE 0x00000004U
167 /* synonym */
168 # define SSL_kEECDH SSL_kECDHE
169 /* PSK */
170 # define SSL_kPSK 0x00000008U
171 /* GOST key exchange */
172 # define SSL_kGOST 0x00000010U
173 /* SRP */
174 # define SSL_kSRP 0x00000020U
175
176 # define SSL_kRSAPSK 0x00000040U
177 # define SSL_kECDHEPSK 0x00000080U
178 # define SSL_kDHEPSK 0x00000100U
179
180 /* all PSK */
181
182 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
183
184 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
185 # define SSL_kANY 0x00000000U
186
187 /* Bits for algorithm_auth (server authentication) */
188 /* RSA auth */
189 # define SSL_aRSA 0x00000001U
190 /* DSS auth */
191 # define SSL_aDSS 0x00000002U
192 /* no auth (i.e. use ADH or AECDH) */
193 # define SSL_aNULL 0x00000004U
194 /* ECDSA auth*/
195 # define SSL_aECDSA 0x00000008U
196 /* PSK auth */
197 # define SSL_aPSK 0x00000010U
198 /* GOST R 34.10-2001 signature auth */
199 # define SSL_aGOST01 0x00000020U
200 /* SRP auth */
201 # define SSL_aSRP 0x00000040U
202 /* GOST R 34.10-2012 signature auth */
203 # define SSL_aGOST12 0x00000080U
204 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
205 # define SSL_aANY 0x00000000U
206 /* All bits requiring a certificate */
207 #define SSL_aCERT \
208 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
209
210 /* Bits for algorithm_enc (symmetric encryption) */
211 # define SSL_DES 0x00000001U
212 # define SSL_3DES 0x00000002U
213 # define SSL_RC4 0x00000004U
214 # define SSL_RC2 0x00000008U
215 # define SSL_IDEA 0x00000010U
216 # define SSL_eNULL 0x00000020U
217 # define SSL_AES128 0x00000040U
218 # define SSL_AES256 0x00000080U
219 # define SSL_CAMELLIA128 0x00000100U
220 # define SSL_CAMELLIA256 0x00000200U
221 # define SSL_eGOST2814789CNT 0x00000400U
222 # define SSL_SEED 0x00000800U
223 # define SSL_AES128GCM 0x00001000U
224 # define SSL_AES256GCM 0x00002000U
225 # define SSL_AES128CCM 0x00004000U
226 # define SSL_AES256CCM 0x00008000U
227 # define SSL_AES128CCM8 0x00010000U
228 # define SSL_AES256CCM8 0x00020000U
229 # define SSL_eGOST2814789CNT12 0x00040000U
230 # define SSL_CHACHA20POLY1305 0x00080000U
231 # define SSL_ARIA128GCM 0x00100000U
232 # define SSL_ARIA256GCM 0x00200000U
233
234 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
235 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
236 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
237 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
238 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
239 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
240 # define SSL_ARIA (SSL_ARIAGCM)
241
242 /* Bits for algorithm_mac (symmetric authentication) */
243
244 # define SSL_MD5 0x00000001U
245 # define SSL_SHA1 0x00000002U
246 # define SSL_GOST94 0x00000004U
247 # define SSL_GOST89MAC 0x00000008U
248 # define SSL_SHA256 0x00000010U
249 # define SSL_SHA384 0x00000020U
250 /* Not a real MAC, just an indication it is part of cipher */
251 # define SSL_AEAD 0x00000040U
252 # define SSL_GOST12_256 0x00000080U
253 # define SSL_GOST89MAC12 0x00000100U
254 # define SSL_GOST12_512 0x00000200U
255
256 /*
257 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
258 * sure to update this constant too
259 */
260
261 # define SSL_MD_MD5_IDX 0
262 # define SSL_MD_SHA1_IDX 1
263 # define SSL_MD_GOST94_IDX 2
264 # define SSL_MD_GOST89MAC_IDX 3
265 # define SSL_MD_SHA256_IDX 4
266 # define SSL_MD_SHA384_IDX 5
267 # define SSL_MD_GOST12_256_IDX 6
268 # define SSL_MD_GOST89MAC12_IDX 7
269 # define SSL_MD_GOST12_512_IDX 8
270 # define SSL_MD_MD5_SHA1_IDX 9
271 # define SSL_MD_SHA224_IDX 10
272 # define SSL_MD_SHA512_IDX 11
273 # define SSL_MAX_DIGEST 12
274
275 /* Bits for algorithm2 (handshake digests and other extra flags) */
276
277 /* Bits 0-7 are handshake MAC */
278 # define SSL_HANDSHAKE_MAC_MASK 0xFF
279 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
280 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
281 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
282 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
283 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
284 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
285 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
286
287 /* Bits 8-15 bits are PRF */
288 # define TLS1_PRF_DGST_SHIFT 8
289 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
290 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
291 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
292 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
293 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
294 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
295 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
296
297 /*
298 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
299 * goes into algorithm2)
300 */
301 # define TLS1_STREAM_MAC 0x10000
302
303 # define SSL_STRONG_MASK 0x0000001FU
304 # define SSL_DEFAULT_MASK 0X00000020U
305
306 # define SSL_STRONG_NONE 0x00000001U
307 # define SSL_LOW 0x00000002U
308 # define SSL_MEDIUM 0x00000004U
309 # define SSL_HIGH 0x00000008U
310 # define SSL_FIPS 0x00000010U
311 # define SSL_NOT_DEFAULT 0x00000020U
312
313 /* we have used 0000003f - 26 bits left to go */
314
315 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
316 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
317
318 /* Check if an SSL structure is using DTLS */
319 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
320
321 /* Check if we are using TLSv1.3 */
322 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
323 && (s)->method->version >= TLS1_3_VERSION \
324 && (s)->method->version != TLS_ANY_VERSION)
325
326 # define SSL_TREAT_AS_TLS13(s) \
327 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
328 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
329 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
330 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
331 || (s)->hello_retry_request == SSL_HRR_PENDING)
332
333 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \
334 || (s)->s3->tmp.peer_finish_md_len == 0)
335
336 /* See if we need explicit IV */
337 # define SSL_USE_EXPLICIT_IV(s) \
338 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
339 /*
340 * See if we use signature algorithms extension and signature algorithm
341 * before signatures.
342 */
343 # define SSL_USE_SIGALGS(s) \
344 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
345 /*
346 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
347 * apply to others in future.
348 */
349 # define SSL_USE_TLS1_2_CIPHERS(s) \
350 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
351 /*
352 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
353 * flags because it may not be set to correct version yet.
354 */
355 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
356 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
357 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
358 /*
359 * Determine if a client should send signature algorithms extension:
360 * as with TLS1.2 cipher we can't rely on method flags.
361 */
362 # define SSL_CLIENT_USE_SIGALGS(s) \
363 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
364
365 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
366 (((value) >= TLSEXT_max_fragment_length_512) && \
367 ((value) <= TLSEXT_max_fragment_length_4096))
368 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
369 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
370 # define GET_MAX_FRAGMENT_LENGTH(session) \
371 (512U << (session->ext.max_fragment_len_mode - 1))
372
373 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
374 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
375
376 /* Mostly for SSLv3 */
377 # define SSL_PKEY_RSA 0
378 # define SSL_PKEY_RSA_PSS_SIGN 1
379 # define SSL_PKEY_DSA_SIGN 2
380 # define SSL_PKEY_ECC 3
381 # define SSL_PKEY_GOST01 4
382 # define SSL_PKEY_GOST12_256 5
383 # define SSL_PKEY_GOST12_512 6
384 # define SSL_PKEY_ED25519 7
385 # define SSL_PKEY_ED448 8
386 # define SSL_PKEY_NUM 9
387
388 /*-
389 * SSL_kRSA <- RSA_ENC
390 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
391 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
392 * SSL_aRSA <- RSA_ENC | RSA_SIGN
393 * SSL_aDSS <- DSA_SIGN
394 */
395
396 /*-
397 #define CERT_INVALID 0
398 #define CERT_PUBLIC_KEY 1
399 #define CERT_PRIVATE_KEY 2
400 */
401
402 /* Post-Handshake Authentication state */
403 typedef enum {
404 SSL_PHA_NONE = 0,
405 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
406 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
407 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
408 SSL_PHA_REQUESTED /* request received by client, or sent by server */
409 } SSL_PHA_STATE;
410
411 /* CipherSuite length. SSLv3 and all TLS versions. */
412 # define TLS_CIPHER_LEN 2
413 /* used to hold info on the particular ciphers used */
414 struct ssl_cipher_st {
415 uint32_t valid;
416 const char *name; /* text name */
417 const char *stdname; /* RFC name */
418 uint32_t id; /* id, 4 bytes, first is version */
419 /*
420 * changed in 1.0.0: these four used to be portions of a single value
421 * 'algorithms'
422 */
423 uint32_t algorithm_mkey; /* key exchange algorithm */
424 uint32_t algorithm_auth; /* server authentication */
425 uint32_t algorithm_enc; /* symmetric encryption */
426 uint32_t algorithm_mac; /* symmetric authentication */
427 int min_tls; /* minimum SSL/TLS protocol version */
428 int max_tls; /* maximum SSL/TLS protocol version */
429 int min_dtls; /* minimum DTLS protocol version */
430 int max_dtls; /* maximum DTLS protocol version */
431 uint32_t algo_strength; /* strength and export flags */
432 uint32_t algorithm2; /* Extra flags */
433 int32_t strength_bits; /* Number of bits really used */
434 uint32_t alg_bits; /* Number of bits for algorithm */
435 };
436
437 /* Used to hold SSL/TLS functions */
438 struct ssl_method_st {
439 int version;
440 unsigned flags;
441 unsigned long mask;
442 int (*ssl_new) (SSL *s);
443 int (*ssl_clear) (SSL *s);
444 void (*ssl_free) (SSL *s);
445 int (*ssl_accept) (SSL *s);
446 int (*ssl_connect) (SSL *s);
447 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
448 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
449 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
450 int (*ssl_shutdown) (SSL *s);
451 int (*ssl_renegotiate) (SSL *s);
452 int (*ssl_renegotiate_check) (SSL *s, int);
453 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
454 unsigned char *buf, size_t len, int peek,
455 size_t *readbytes);
456 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
457 size_t *written);
458 int (*ssl_dispatch_alert) (SSL *s);
459 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
460 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
461 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
462 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
463 size_t *len);
464 size_t (*ssl_pending) (const SSL *s);
465 int (*num_ciphers) (void);
466 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
467 long (*get_timeout) (void);
468 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
469 int (*ssl_version) (void);
470 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
471 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
472 };
473
474 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 64
475
476 /*-
477 * Lets make this into an ASN.1 type structure as follows
478 * SSL_SESSION_ID ::= SEQUENCE {
479 * version INTEGER, -- structure version number
480 * SSLversion INTEGER, -- SSL version number
481 * Cipher OCTET STRING, -- the 3 byte cipher ID
482 * Session_ID OCTET STRING, -- the Session ID
483 * Master_key OCTET STRING, -- the master key
484 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
485 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
486 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
487 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
488 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
489 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
490 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
491 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
492 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
493 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
494 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
495 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
496 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
497 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
498 * }
499 * Look in ssl/ssl_asn1.c for more details
500 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
501 */
502 struct ssl_session_st {
503 int ssl_version; /* what ssl version session info is being kept
504 * in here? */
505 size_t master_key_length;
506
507 /* TLSv1.3 early_secret used for external PSKs */
508 unsigned char early_secret[EVP_MAX_MD_SIZE];
509 /*
510 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
511 * PSK
512 */
513 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
514 /* session_id - valid? */
515 size_t session_id_length;
516 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
517 /*
518 * this is used to determine whether the session is being reused in the
519 * appropriate context. It is up to the application to set this, via
520 * SSL_new
521 */
522 size_t sid_ctx_length;
523 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
524 # ifndef OPENSSL_NO_PSK
525 char *psk_identity_hint;
526 char *psk_identity;
527 # endif
528 /*
529 * Used to indicate that session resumption is not allowed. Applications
530 * can also set this bit for a new session via not_resumable_session_cb
531 * to disable session caching and tickets.
532 */
533 int not_resumable;
534 /* This is the cert and type for the other end. */
535 X509 *peer;
536 int peer_type;
537 /* Certificate chain peer sent. */
538 STACK_OF(X509) *peer_chain;
539 /*
540 * when app_verify_callback accepts a session where the peer's
541 * certificate is not ok, we must remember the error for session reuse:
542 */
543 long verify_result; /* only for servers */
544 CRYPTO_REF_COUNT references;
545 long timeout;
546 long time;
547 unsigned int compress_meth; /* Need to lookup the method */
548 const SSL_CIPHER *cipher;
549 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
550 * load the 'cipher' structure */
551 STACK_OF(SSL_CIPHER) *ciphers; /* ciphers offered by the client */
552 CRYPTO_EX_DATA ex_data; /* application specific data */
553 /*
554 * These are used to make removal of session-ids more efficient and to
555 * implement a maximum cache size.
556 */
557 struct ssl_session_st *prev, *next;
558
559 struct {
560 char *hostname;
561 # ifndef OPENSSL_NO_EC
562 size_t ecpointformats_len;
563 unsigned char *ecpointformats; /* peer's list */
564 # endif /* OPENSSL_NO_EC */
565 size_t supportedgroups_len;
566 uint16_t *supportedgroups; /* peer's list */
567 /* RFC4507 info */
568 unsigned char *tick; /* Session ticket */
569 size_t ticklen; /* Session ticket length */
570 /* Session lifetime hint in seconds */
571 unsigned long tick_lifetime_hint;
572 uint32_t tick_age_add;
573 int tick_identity;
574 /* Max number of bytes that can be sent as early data */
575 uint32_t max_early_data;
576 /* The ALPN protocol selected for this session */
577 unsigned char *alpn_selected;
578 size_t alpn_selected_len;
579 /*
580 * Maximum Fragment Length as per RFC 4366.
581 * If this value does not contain RFC 4366 allowed values (1-4) then
582 * either the Maximum Fragment Length Negotiation failed or was not
583 * performed at all.
584 */
585 uint8_t max_fragment_len_mode;
586 } ext;
587 # ifndef OPENSSL_NO_SRP
588 char *srp_username;
589 # endif
590 unsigned char *ticket_appdata;
591 size_t ticket_appdata_len;
592 uint32_t flags;
593 CRYPTO_RWLOCK *lock;
594 };
595
596 /* Extended master secret support */
597 # define SSL_SESS_FLAG_EXTMS 0x1
598
599 # ifndef OPENSSL_NO_SRP
600
601 typedef struct srp_ctx_st {
602 /* param for all the callbacks */
603 void *SRP_cb_arg;
604 /* set client Hello login callback */
605 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
606 /* set SRP N/g param callback for verification */
607 int (*SRP_verify_param_callback) (SSL *, void *);
608 /* set SRP client passwd callback */
609 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
610 char *login;
611 BIGNUM *N, *g, *s, *B, *A;
612 BIGNUM *a, *b, *v;
613 char *info;
614 int strength;
615 unsigned long srp_Mask;
616 } SRP_CTX;
617
618 # endif
619
620 typedef enum {
621 SSL_EARLY_DATA_NONE = 0,
622 SSL_EARLY_DATA_CONNECT_RETRY,
623 SSL_EARLY_DATA_CONNECTING,
624 SSL_EARLY_DATA_WRITE_RETRY,
625 SSL_EARLY_DATA_WRITING,
626 SSL_EARLY_DATA_WRITE_FLUSH,
627 SSL_EARLY_DATA_UNAUTH_WRITING,
628 SSL_EARLY_DATA_FINISHED_WRITING,
629 SSL_EARLY_DATA_ACCEPT_RETRY,
630 SSL_EARLY_DATA_ACCEPTING,
631 SSL_EARLY_DATA_READ_RETRY,
632 SSL_EARLY_DATA_READING,
633 SSL_EARLY_DATA_FINISHED_READING
634 } SSL_EARLY_DATA_STATE;
635
636 /*
637 * We check that the amount of unreadable early data doesn't exceed
638 * max_early_data. max_early_data is given in plaintext bytes. However if it is
639 * unreadable then we only know the number of ciphertext bytes. We also don't
640 * know how much the overhead should be because it depends on the ciphersuite.
641 * We make a small allowance. We assume 5 records of actual data plus the end
642 * of early data alert record. Each record has a tag and a content type byte.
643 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
644 * content of the alert record either which is 2 bytes.
645 */
646 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
647
648 /*
649 * The allowance we have between the client's calculated ticket age and our own.
650 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
651 * client's age calculation is different by more than this than our own then we
652 * do not allow that ticket for early_data.
653 */
654 # define TICKET_AGE_ALLOWANCE (10 * 1000)
655
656 #define MAX_COMPRESSIONS_SIZE 255
657
658 struct ssl_comp_st {
659 int id;
660 const char *name;
661 COMP_METHOD *method;
662 };
663
664 typedef struct raw_extension_st {
665 /* Raw packet data for the extension */
666 PACKET data;
667 /* Set to 1 if the extension is present or 0 otherwise */
668 int present;
669 /* Set to 1 if we have already parsed the extension or 0 otherwise */
670 int parsed;
671 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
672 unsigned int type;
673 /* Track what order extensions are received in (0-based). */
674 size_t received_order;
675 } RAW_EXTENSION;
676
677 typedef struct {
678 unsigned int isv2;
679 unsigned int legacy_version;
680 unsigned char random[SSL3_RANDOM_SIZE];
681 size_t session_id_len;
682 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
683 size_t dtls_cookie_len;
684 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
685 PACKET ciphersuites;
686 size_t compressions_len;
687 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
688 PACKET extensions;
689 size_t pre_proc_exts_len;
690 RAW_EXTENSION *pre_proc_exts;
691 } CLIENTHELLO_MSG;
692
693 /*
694 * Extension index values NOTE: Any updates to these defines should be mirrored
695 * with equivalent updates to ext_defs in extensions.c
696 */
697 typedef enum tlsext_index_en {
698 TLSEXT_IDX_renegotiate,
699 TLSEXT_IDX_server_name,
700 TLSEXT_IDX_max_fragment_length,
701 TLSEXT_IDX_srp,
702 TLSEXT_IDX_ec_point_formats,
703 TLSEXT_IDX_supported_groups,
704 TLSEXT_IDX_session_ticket,
705 TLSEXT_IDX_status_request,
706 TLSEXT_IDX_next_proto_neg,
707 TLSEXT_IDX_application_layer_protocol_negotiation,
708 TLSEXT_IDX_use_srtp,
709 TLSEXT_IDX_encrypt_then_mac,
710 TLSEXT_IDX_signed_certificate_timestamp,
711 TLSEXT_IDX_extended_master_secret,
712 TLSEXT_IDX_signature_algorithms_cert,
713 TLSEXT_IDX_post_handshake_auth,
714 TLSEXT_IDX_signature_algorithms,
715 TLSEXT_IDX_supported_versions,
716 TLSEXT_IDX_psk_kex_modes,
717 TLSEXT_IDX_key_share,
718 TLSEXT_IDX_cookie,
719 TLSEXT_IDX_cryptopro_bug,
720 TLSEXT_IDX_early_data,
721 TLSEXT_IDX_certificate_authorities,
722 TLSEXT_IDX_padding,
723 TLSEXT_IDX_psk,
724 /* Dummy index - must always be the last entry */
725 TLSEXT_IDX_num_builtins
726 } TLSEXT_INDEX;
727
728 DEFINE_LHASH_OF(SSL_SESSION);
729 /* Needed in ssl_cert.c */
730 DEFINE_LHASH_OF(X509_NAME);
731
732 # define TLSEXT_KEYNAME_LENGTH 16
733 # define TLSEXT_TICK_KEY_LENGTH 32
734
735 typedef struct ssl_ctx_ext_secure_st {
736 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
737 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
738 } SSL_CTX_EXT_SECURE;
739
740 struct ssl_ctx_st {
741 const SSL_METHOD *method;
742 STACK_OF(SSL_CIPHER) *cipher_list;
743 /* same as above but sorted for lookup */
744 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
745 /* TLSv1.3 specific ciphersuites */
746 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
747 struct x509_store_st /* X509_STORE */ *cert_store;
748 LHASH_OF(SSL_SESSION) *sessions;
749 /*
750 * Most session-ids that will be cached, default is
751 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
752 */
753 size_t session_cache_size;
754 struct ssl_session_st *session_cache_head;
755 struct ssl_session_st *session_cache_tail;
756 /*
757 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
758 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
759 * means only SSL_accept will cache SSL_SESSIONS.
760 */
761 uint32_t session_cache_mode;
762 /*
763 * If timeout is not 0, it is the default timeout value set when
764 * SSL_new() is called. This has been put in to make life easier to set
765 * things up
766 */
767 long session_timeout;
768 /*
769 * If this callback is not null, it will be called each time a session id
770 * is added to the cache. If this function returns 1, it means that the
771 * callback will do a SSL_SESSION_free() when it has finished using it.
772 * Otherwise, on 0, it means the callback has finished with it. If
773 * remove_session_cb is not null, it will be called when a session-id is
774 * removed from the cache. After the call, OpenSSL will
775 * SSL_SESSION_free() it.
776 */
777 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
778 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
779 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
780 const unsigned char *data, int len,
781 int *copy);
782 struct {
783 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
784 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
785 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
786 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
787 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
788 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
789 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
790 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
791 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
792 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
793 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
794 * the cache was passed back via
795 * the callback. This indicates
796 * that the application is
797 * supplying session-id's from
798 * other processes - spooky
799 * :-) */
800 } stats;
801
802 CRYPTO_REF_COUNT references;
803
804 /* if defined, these override the X509_verify_cert() calls */
805 int (*app_verify_callback) (X509_STORE_CTX *, void *);
806 void *app_verify_arg;
807 /*
808 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
809 * ('app_verify_callback' was called with just one argument)
810 */
811
812 /* Default password callback. */
813 pem_password_cb *default_passwd_callback;
814
815 /* Default password callback user data. */
816 void *default_passwd_callback_userdata;
817
818 /* get client cert callback */
819 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
820
821 /* cookie generate callback */
822 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
823 unsigned int *cookie_len);
824
825 /* verify cookie callback */
826 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
827 unsigned int cookie_len);
828
829 /* TLS1.3 app-controlled cookie generate callback */
830 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
831 size_t *cookie_len);
832
833 /* TLS1.3 verify app-controlled cookie callback */
834 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
835 size_t cookie_len);
836
837 CRYPTO_EX_DATA ex_data;
838
839 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
840 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
841
842 STACK_OF(X509) *extra_certs;
843 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
844
845 /* Default values used when no per-SSL value is defined follow */
846
847 /* used if SSL's info_callback is NULL */
848 void (*info_callback) (const SSL *ssl, int type, int val);
849
850 /*
851 * What we put in certificate_authorities extension for TLS 1.3
852 * (ClientHello and CertificateRequest) or just client cert requests for
853 * earlier versions.
854 */
855 STACK_OF(X509_NAME) *ca_names;
856
857 /*
858 * Default values to use in SSL structures follow (these are copied by
859 * SSL_new)
860 */
861
862 uint32_t options;
863 uint32_t mode;
864 int min_proto_version;
865 int max_proto_version;
866 size_t max_cert_list;
867
868 struct cert_st /* CERT */ *cert;
869 int read_ahead;
870
871 /* callback that allows applications to peek at protocol messages */
872 void (*msg_callback) (int write_p, int version, int content_type,
873 const void *buf, size_t len, SSL *ssl, void *arg);
874 void *msg_callback_arg;
875
876 uint32_t verify_mode;
877 size_t sid_ctx_length;
878 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
879 /* called 'verify_callback' in the SSL */
880 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
881
882 /* Default generate session ID callback. */
883 GEN_SESSION_CB generate_session_id;
884
885 X509_VERIFY_PARAM *param;
886
887 int quiet_shutdown;
888
889 # ifndef OPENSSL_NO_CT
890 CTLOG_STORE *ctlog_store; /* CT Log Store */
891 /*
892 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
893 * If they are not, the connection should be aborted.
894 */
895 ssl_ct_validation_cb ct_validation_callback;
896 void *ct_validation_callback_arg;
897 # endif
898
899 /*
900 * If we're using more than one pipeline how should we divide the data
901 * up between the pipes?
902 */
903 size_t split_send_fragment;
904 /*
905 * Maximum amount of data to send in one fragment. actual record size can
906 * be more than this due to padding and MAC overheads.
907 */
908 size_t max_send_fragment;
909
910 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
911 size_t max_pipelines;
912
913 /* The default read buffer length to use (0 means not set) */
914 size_t default_read_buf_len;
915
916 # ifndef OPENSSL_NO_ENGINE
917 /*
918 * Engine to pass requests for client certs to
919 */
920 ENGINE *client_cert_engine;
921 # endif
922
923 /* ClientHello callback. Mostly for extensions, but not entirely. */
924 SSL_client_hello_cb_fn client_hello_cb;
925 void *client_hello_cb_arg;
926
927 /* TLS extensions. */
928 struct {
929 /* TLS extensions servername callback */
930 int (*servername_cb) (SSL *, int *, void *);
931 void *servername_arg;
932 /* RFC 4507 session ticket keys */
933 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
934 SSL_CTX_EXT_SECURE *secure;
935 /* Callback to support customisation of ticket key setting */
936 int (*ticket_key_cb) (SSL *ssl,
937 unsigned char *name, unsigned char *iv,
938 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
939
940 /* certificate status request info */
941 /* Callback for status request */
942 int (*status_cb) (SSL *ssl, void *arg);
943 void *status_arg;
944 /* ext status type used for CSR extension (OCSP Stapling) */
945 int status_type;
946 /* RFC 4366 Maximum Fragment Length Negotiation */
947 uint8_t max_fragment_len_mode;
948
949 # ifndef OPENSSL_NO_EC
950 /* EC extension values inherited by SSL structure */
951 size_t ecpointformats_len;
952 unsigned char *ecpointformats;
953 size_t supportedgroups_len;
954 uint16_t *supportedgroups;
955 # endif /* OPENSSL_NO_EC */
956
957 /*
958 * ALPN information (we are in the process of transitioning from NPN to
959 * ALPN.)
960 */
961
962 /*-
963 * For a server, this contains a callback function that allows the
964 * server to select the protocol for the connection.
965 * out: on successful return, this must point to the raw protocol
966 * name (without the length prefix).
967 * outlen: on successful return, this contains the length of |*out|.
968 * in: points to the client's list of supported protocols in
969 * wire-format.
970 * inlen: the length of |in|.
971 */
972 int (*alpn_select_cb) (SSL *s,
973 const unsigned char **out,
974 unsigned char *outlen,
975 const unsigned char *in,
976 unsigned int inlen, void *arg);
977 void *alpn_select_cb_arg;
978
979 /*
980 * For a client, this contains the list of supported protocols in wire
981 * format.
982 */
983 unsigned char *alpn;
984 size_t alpn_len;
985
986 # ifndef OPENSSL_NO_NEXTPROTONEG
987 /* Next protocol negotiation information */
988
989 /*
990 * For a server, this contains a callback function by which the set of
991 * advertised protocols can be provided.
992 */
993 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
994 void *npn_advertised_cb_arg;
995 /*
996 * For a client, this contains a callback function that selects the next
997 * protocol from the list provided by the server.
998 */
999 SSL_CTX_npn_select_cb_func npn_select_cb;
1000 void *npn_select_cb_arg;
1001 # endif
1002
1003 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1004 } ext;
1005
1006 # ifndef OPENSSL_NO_PSK
1007 SSL_psk_client_cb_func psk_client_callback;
1008 SSL_psk_server_cb_func psk_server_callback;
1009 # endif
1010 SSL_psk_find_session_cb_func psk_find_session_cb;
1011 SSL_psk_use_session_cb_func psk_use_session_cb;
1012
1013 # ifndef OPENSSL_NO_SRP
1014 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1015 # endif
1016
1017 /* Shared DANE context */
1018 struct dane_ctx_st dane;
1019
1020 # ifndef OPENSSL_NO_SRTP
1021 /* SRTP profiles we are willing to do from RFC 5764 */
1022 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1023 # endif
1024 /*
1025 * Callback for disabling session caching and ticket support on a session
1026 * basis, depending on the chosen cipher.
1027 */
1028 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1029
1030 CRYPTO_RWLOCK *lock;
1031
1032 /*
1033 * Callback for logging key material for use with debugging tools like
1034 * Wireshark. The callback should log `line` followed by a newline.
1035 */
1036 SSL_CTX_keylog_cb_func keylog_callback;
1037
1038 /*
1039 * The maximum number of bytes advertised in session tickets that can be
1040 * sent as early data.
1041 */
1042 uint32_t max_early_data;
1043
1044 /*
1045 * The maximum number of bytes of early data that a server will tolerate
1046 * (which should be at least as much as max_early_data).
1047 */
1048 uint32_t recv_max_early_data;
1049
1050 /* TLS1.3 padding callback */
1051 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1052 void *record_padding_arg;
1053 size_t block_padding;
1054
1055 /* Session ticket appdata */
1056 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1057 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1058 void *ticket_cb_data;
1059
1060 /* The number of TLS1.3 tickets to automatically send */
1061 size_t num_tickets;
1062
1063 /* Callback to determine if early_data is acceptable or not */
1064 SSL_allow_early_data_cb_fn allow_early_data_cb;
1065 void *allow_early_data_cb_data;
1066
1067 /* Do we advertise Post-handshake auth support? */
1068 int pha_enabled;
1069 };
1070
1071 struct ssl_st {
1072 /*
1073 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1074 * DTLS1_VERSION)
1075 */
1076 int version;
1077 /* SSLv3 */
1078 const SSL_METHOD *method;
1079 /*
1080 * There are 2 BIO's even though they are normally both the same. This
1081 * is so data can be read and written to different handlers
1082 */
1083 /* used by SSL_read */
1084 BIO *rbio;
1085 /* used by SSL_write */
1086 BIO *wbio;
1087 /* used during session-id reuse to concatenate messages */
1088 BIO *bbio;
1089 /*
1090 * This holds a variable that indicates what we were doing when a 0 or -1
1091 * is returned. This is needed for non-blocking IO so we know what
1092 * request needs re-doing when in SSL_accept or SSL_connect
1093 */
1094 int rwstate;
1095 int (*handshake_func) (SSL *);
1096 /*
1097 * Imagine that here's a boolean member "init" that is switched as soon
1098 * as SSL_set_{accept/connect}_state is called for the first time, so
1099 * that "state" and "handshake_func" are properly initialized. But as
1100 * handshake_func is == 0 until then, we use this test instead of an
1101 * "init" member.
1102 */
1103 /* are we the server side? */
1104 int server;
1105 /*
1106 * Generate a new session or reuse an old one.
1107 * NB: For servers, the 'new' session may actually be a previously
1108 * cached session or even the previous session unless
1109 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1110 */
1111 int new_session;
1112 /* don't send shutdown packets */
1113 int quiet_shutdown;
1114 /* we have shut things down, 0x01 sent, 0x02 for received */
1115 int shutdown;
1116 /* where we are */
1117 OSSL_STATEM statem;
1118 SSL_EARLY_DATA_STATE early_data_state;
1119 BUF_MEM *init_buf; /* buffer used during init */
1120 void *init_msg; /* pointer to handshake message body, set by
1121 * ssl3_get_message() */
1122 size_t init_num; /* amount read/written */
1123 size_t init_off; /* amount read/written */
1124 struct ssl3_state_st *s3; /* SSLv3 variables */
1125 struct dtls1_state_st *d1; /* DTLSv1 variables */
1126 /* callback that allows applications to peek at protocol messages */
1127 void (*msg_callback) (int write_p, int version, int content_type,
1128 const void *buf, size_t len, SSL *ssl, void *arg);
1129 void *msg_callback_arg;
1130 int hit; /* reusing a previous session */
1131 X509_VERIFY_PARAM *param;
1132 /* Per connection DANE state */
1133 SSL_DANE dane;
1134 /* crypto */
1135 STACK_OF(SSL_CIPHER) *cipher_list;
1136 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1137 /* TLSv1.3 specific ciphersuites */
1138 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1139 /*
1140 * These are the ones being used, the ones in SSL_SESSION are the ones to
1141 * be 'copied' into these ones
1142 */
1143 uint32_t mac_flags;
1144 /*
1145 * The TLS1.3 secrets.
1146 */
1147 unsigned char early_secret[EVP_MAX_MD_SIZE];
1148 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1149 unsigned char master_secret[EVP_MAX_MD_SIZE];
1150 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1151 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1152 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1153 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1154 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1155 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1156 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1157 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1158 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1159 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1160 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1161 EVP_MD_CTX *read_hash; /* used for mac generation */
1162 COMP_CTX *compress; /* compression */
1163 COMP_CTX *expand; /* uncompress */
1164 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1165 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1166 EVP_MD_CTX *write_hash; /* used for mac generation */
1167 /* Count of how many KeyUpdate messages we have received */
1168 unsigned int key_update_count;
1169 /* session info */
1170 /* client cert? */
1171 /* This is used to hold the server certificate used */
1172 struct cert_st /* CERT */ *cert;
1173
1174 /*
1175 * The hash of all messages prior to the CertificateVerify, and the length
1176 * of that hash.
1177 */
1178 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1179 size_t cert_verify_hash_len;
1180
1181 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1182 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
1183 hello_retry_request;
1184
1185 /*
1186 * the session_id_context is used to ensure sessions are only reused in
1187 * the appropriate context
1188 */
1189 size_t sid_ctx_length;
1190 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1191 /* This can also be in the session once a session is established */
1192 SSL_SESSION *session;
1193 /* TLSv1.3 PSK session */
1194 SSL_SESSION *psksession;
1195 unsigned char *psksession_id;
1196 size_t psksession_id_len;
1197 /* Default generate session ID callback. */
1198 GEN_SESSION_CB generate_session_id;
1199 /*
1200 * The temporary TLSv1.3 session id. This isn't really a session id at all
1201 * but is a random value sent in the legacy session id field.
1202 */
1203 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
1204 size_t tmp_session_id_len;
1205 /* Used in SSL3 */
1206 /*
1207 * 0 don't care about verify failure.
1208 * 1 fail if verify fails
1209 */
1210 uint32_t verify_mode;
1211 /* fail if callback returns 0 */
1212 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1213 /* optional informational callback */
1214 void (*info_callback) (const SSL *ssl, int type, int val);
1215 /* error bytes to be written */
1216 int error;
1217 /* actual code */
1218 int error_code;
1219 # ifndef OPENSSL_NO_PSK
1220 SSL_psk_client_cb_func psk_client_callback;
1221 SSL_psk_server_cb_func psk_server_callback;
1222 # endif
1223 SSL_psk_find_session_cb_func psk_find_session_cb;
1224 SSL_psk_use_session_cb_func psk_use_session_cb;
1225
1226 SSL_CTX *ctx;
1227 /* Verified chain of peer */
1228 STACK_OF(X509) *verified_chain;
1229 long verify_result;
1230 /* extra application data */
1231 CRYPTO_EX_DATA ex_data;
1232 /* for server side, keep the list of CA_dn we can use */
1233 STACK_OF(X509_NAME) *ca_names;
1234 CRYPTO_REF_COUNT references;
1235 /* protocol behaviour */
1236 uint32_t options;
1237 /* API behaviour */
1238 uint32_t mode;
1239 int min_proto_version;
1240 int max_proto_version;
1241 size_t max_cert_list;
1242 int first_packet;
1243 /*
1244 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1245 * secret and SSLv3/TLS (<=1.2) rollback check
1246 */
1247 int client_version;
1248 /*
1249 * If we're using more than one pipeline how should we divide the data
1250 * up between the pipes?
1251 */
1252 size_t split_send_fragment;
1253 /*
1254 * Maximum amount of data to send in one fragment. actual record size can
1255 * be more than this due to padding and MAC overheads.
1256 */
1257 size_t max_send_fragment;
1258 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1259 size_t max_pipelines;
1260
1261 struct {
1262 /* Built-in extension flags */
1263 uint8_t extflags[TLSEXT_IDX_num_builtins];
1264 /* TLS extension debug callback */
1265 void (*debug_cb)(SSL *s, int client_server, int type,
1266 const unsigned char *data, int len, void *arg);
1267 void *debug_arg;
1268 char *hostname;
1269 /* certificate status request info */
1270 /* Status type or -1 if no status type */
1271 int status_type;
1272 /* Raw extension data, if seen */
1273 unsigned char *scts;
1274 /* Length of raw extension data, if seen */
1275 uint16_t scts_len;
1276 /* Expect OCSP CertificateStatus message */
1277 int status_expected;
1278
1279 struct {
1280 /* OCSP status request only */
1281 STACK_OF(OCSP_RESPID) *ids;
1282 X509_EXTENSIONS *exts;
1283 /* OCSP response received or to be sent */
1284 unsigned char *resp;
1285 size_t resp_len;
1286 } ocsp;
1287
1288 /* RFC4507 session ticket expected to be received or sent */
1289 int ticket_expected;
1290 # ifndef OPENSSL_NO_EC
1291 size_t ecpointformats_len;
1292 /* our list */
1293 unsigned char *ecpointformats;
1294 # endif /* OPENSSL_NO_EC */
1295 size_t supportedgroups_len;
1296 /* our list */
1297 uint16_t *supportedgroups;
1298 /* TLS Session Ticket extension override */
1299 TLS_SESSION_TICKET_EXT *session_ticket;
1300 /* TLS Session Ticket extension callback */
1301 tls_session_ticket_ext_cb_fn session_ticket_cb;
1302 void *session_ticket_cb_arg;
1303 /* TLS pre-shared secret session resumption */
1304 tls_session_secret_cb_fn session_secret_cb;
1305 void *session_secret_cb_arg;
1306 /*
1307 * For a client, this contains the list of supported protocols in wire
1308 * format.
1309 */
1310 unsigned char *alpn;
1311 size_t alpn_len;
1312 /*
1313 * Next protocol negotiation. For the client, this is the protocol that
1314 * we sent in NextProtocol and is set when handling ServerHello
1315 * extensions. For a server, this is the client's selected_protocol from
1316 * NextProtocol and is set when handling the NextProtocol message, before
1317 * the Finished message.
1318 */
1319 unsigned char *npn;
1320 size_t npn_len;
1321
1322 /* The available PSK key exchange modes */
1323 int psk_kex_mode;
1324
1325 /* Set to one if we have negotiated ETM */
1326 int use_etm;
1327
1328 /* Are we expecting to receive early data? */
1329 int early_data;
1330 /* Is the session suitable for early data? */
1331 int early_data_ok;
1332
1333 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1334 unsigned char *tls13_cookie;
1335 size_t tls13_cookie_len;
1336 /* Have we received a cookie from the client? */
1337 int cookieok;
1338
1339 /*
1340 * Maximum Fragment Length as per RFC 4366.
1341 * If this member contains one of the allowed values (1-4)
1342 * then we should include Maximum Fragment Length Negotiation
1343 * extension in Client Hello.
1344 * Please note that value of this member does not have direct
1345 * effect. The actual (binding) value is stored in SSL_SESSION,
1346 * as this extension is optional on server side.
1347 */
1348 uint8_t max_fragment_len_mode;
1349 } ext;
1350
1351 /*
1352 * Parsed form of the ClientHello, kept around across client_hello_cb
1353 * calls.
1354 */
1355 CLIENTHELLO_MSG *clienthello;
1356
1357 /*-
1358 * no further mod of servername
1359 * 0 : call the servername extension callback.
1360 * 1 : prepare 2, allow last ack just after in server callback.
1361 * 2 : don't call servername callback, no ack in server hello
1362 */
1363 int servername_done;
1364 # ifndef OPENSSL_NO_CT
1365 /*
1366 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1367 * If they are not, the connection should be aborted.
1368 */
1369 ssl_ct_validation_cb ct_validation_callback;
1370 /* User-supplied argument that is passed to the ct_validation_callback */
1371 void *ct_validation_callback_arg;
1372 /*
1373 * Consolidated stack of SCTs from all sources.
1374 * Lazily populated by CT_get_peer_scts(SSL*)
1375 */
1376 STACK_OF(SCT) *scts;
1377 /* Have we attempted to find/parse SCTs yet? */
1378 int scts_parsed;
1379 # endif
1380 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1381 # ifndef OPENSSL_NO_SRTP
1382 /* What we'll do */
1383 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1384 /* What's been chosen */
1385 SRTP_PROTECTION_PROFILE *srtp_profile;
1386 # endif
1387 /*-
1388 * 1 if we are renegotiating.
1389 * 2 if we are a server and are inside a handshake
1390 * (i.e. not just sending a HelloRequest)
1391 */
1392 int renegotiate;
1393 /* If sending a KeyUpdate is pending */
1394 int key_update;
1395 /* Post-handshake authentication state */
1396 SSL_PHA_STATE post_handshake_auth;
1397 int pha_enabled;
1398 uint8_t* pha_context;
1399 size_t pha_context_len;
1400 int certreqs_sent;
1401 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1402
1403 # ifndef OPENSSL_NO_SRP
1404 /* ctx for SRP authentication */
1405 SRP_CTX srp_ctx;
1406 # endif
1407 /*
1408 * Callback for disabling session caching and ticket support on a session
1409 * basis, depending on the chosen cipher.
1410 */
1411 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1412 RECORD_LAYER rlayer;
1413 /* Default password callback. */
1414 pem_password_cb *default_passwd_callback;
1415 /* Default password callback user data. */
1416 void *default_passwd_callback_userdata;
1417 /* Async Job info */
1418 ASYNC_JOB *job;
1419 ASYNC_WAIT_CTX *waitctx;
1420 size_t asyncrw;
1421
1422 /*
1423 * The maximum number of bytes advertised in session tickets that can be
1424 * sent as early data.
1425 */
1426 uint32_t max_early_data;
1427 /*
1428 * The maximum number of bytes of early data that a server will tolerate
1429 * (which should be at least as much as max_early_data).
1430 */
1431 uint32_t recv_max_early_data;
1432
1433 /*
1434 * The number of bytes of early data received so far. If we accepted early
1435 * data then this is a count of the plaintext bytes. If we rejected it then
1436 * this is a count of the ciphertext bytes.
1437 */
1438 uint32_t early_data_count;
1439
1440 /* TLS1.3 padding callback */
1441 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1442 void *record_padding_arg;
1443 size_t block_padding;
1444
1445 CRYPTO_RWLOCK *lock;
1446 RAND_DRBG *drbg;
1447
1448 /* The number of TLS1.3 tickets to automatically send */
1449 size_t num_tickets;
1450 /* The number of TLS1.3 tickets actually sent so far */
1451 size_t sent_tickets;
1452 /* The next nonce value to use when we send a ticket on this connection */
1453 uint64_t next_ticket_nonce;
1454
1455 /* Callback to determine if early_data is acceptable or not */
1456 SSL_allow_early_data_cb_fn allow_early_data_cb;
1457 void *allow_early_data_cb_data;
1458 };
1459
1460 /*
1461 * Structure containing table entry of values associated with the signature
1462 * algorithms (signature scheme) extension
1463 */
1464 typedef struct sigalg_lookup_st {
1465 /* TLS 1.3 signature scheme name */
1466 const char *name;
1467 /* Raw value used in extension */
1468 uint16_t sigalg;
1469 /* NID of hash algorithm or NID_undef if no hash */
1470 int hash;
1471 /* Index of hash algorithm or -1 if no hash algorithm */
1472 int hash_idx;
1473 /* NID of signature algorithm */
1474 int sig;
1475 /* Index of signature algorithm */
1476 int sig_idx;
1477 /* Combined hash and signature NID, if any */
1478 int sigandhash;
1479 /* Required public key curve (ECDSA only) */
1480 int curve;
1481 } SIGALG_LOOKUP;
1482
1483 typedef struct tls_group_info_st {
1484 int nid; /* Curve NID */
1485 int secbits; /* Bits of security (from SP800-57) */
1486 uint16_t flags; /* Flags: currently just group type */
1487 } TLS_GROUP_INFO;
1488
1489 /* flags values */
1490 # define TLS_CURVE_TYPE 0x3 /* Mask for group type */
1491 # define TLS_CURVE_PRIME 0x0
1492 # define TLS_CURVE_CHAR2 0x1
1493 # define TLS_CURVE_CUSTOM 0x2
1494
1495 typedef struct cert_pkey_st CERT_PKEY;
1496
1497 /*
1498 * Structure containing table entry of certificate info corresponding to
1499 * CERT_PKEY entries
1500 */
1501 typedef struct {
1502 int nid; /* NID of pubic key algorithm */
1503 uint32_t amask; /* authmask corresponding to key type */
1504 } SSL_CERT_LOOKUP;
1505
1506 typedef struct ssl3_state_st {
1507 long flags;
1508 size_t read_mac_secret_size;
1509 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1510 size_t write_mac_secret_size;
1511 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1512 unsigned char server_random[SSL3_RANDOM_SIZE];
1513 unsigned char client_random[SSL3_RANDOM_SIZE];
1514 /* flags for countermeasure against known-IV weakness */
1515 int need_empty_fragments;
1516 int empty_fragment_done;
1517 /* used during startup, digest all incoming/outgoing packets */
1518 BIO *handshake_buffer;
1519 /*
1520 * When handshake digest is determined, buffer is hashed and
1521 * freed and MD_CTX for the required digest is stored here.
1522 */
1523 EVP_MD_CTX *handshake_dgst;
1524 /*
1525 * Set whenever an expected ChangeCipherSpec message is processed.
1526 * Unset when the peer's Finished message is received.
1527 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1528 */
1529 int change_cipher_spec;
1530 int warn_alert;
1531 int fatal_alert;
1532 /*
1533 * we allow one fatal and one warning alert to be outstanding, send close
1534 * alert via the warning alert
1535 */
1536 int alert_dispatch;
1537 unsigned char send_alert[2];
1538 /*
1539 * This flag is set when we should renegotiate ASAP, basically when there
1540 * is no more data in the read or write buffers
1541 */
1542 int renegotiate;
1543 int total_renegotiations;
1544 int num_renegotiations;
1545 int in_read_app_data;
1546 struct {
1547 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1548 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1549 size_t finish_md_len;
1550 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1551 size_t peer_finish_md_len;
1552 size_t message_size;
1553 int message_type;
1554 /* used to hold the new cipher we are going to use */
1555 const SSL_CIPHER *new_cipher;
1556 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1557 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1558 # endif
1559 /* used for certificate requests */
1560 int cert_req;
1561 /* Certificate types in certificate request message. */
1562 uint8_t *ctype;
1563 size_t ctype_len;
1564 /* Certificate authorities list peer sent */
1565 STACK_OF(X509_NAME) *peer_ca_names;
1566 size_t key_block_length;
1567 unsigned char *key_block;
1568 const EVP_CIPHER *new_sym_enc;
1569 const EVP_MD *new_hash;
1570 int new_mac_pkey_type;
1571 size_t new_mac_secret_size;
1572 # ifndef OPENSSL_NO_COMP
1573 const SSL_COMP *new_compression;
1574 # else
1575 char *new_compression;
1576 # endif
1577 int cert_request;
1578 /* Raw values of the cipher list from a client */
1579 unsigned char *ciphers_raw;
1580 size_t ciphers_rawlen;
1581 /* Temporary storage for premaster secret */
1582 unsigned char *pms;
1583 size_t pmslen;
1584 # ifndef OPENSSL_NO_PSK
1585 /* Temporary storage for PSK key */
1586 unsigned char *psk;
1587 size_t psklen;
1588 # endif
1589 /* Signature algorithm we actually use */
1590 const SIGALG_LOOKUP *sigalg;
1591 /* Pointer to certificate we use */
1592 CERT_PKEY *cert;
1593 /*
1594 * signature algorithms peer reports: e.g. supported signature
1595 * algorithms extension for server or as part of a certificate
1596 * request for client.
1597 * Keep track of the algorithms for TLS and X.509 usage separately.
1598 */
1599 uint16_t *peer_sigalgs;
1600 uint16_t *peer_cert_sigalgs;
1601 /* Size of above arrays */
1602 size_t peer_sigalgslen;
1603 size_t peer_cert_sigalgslen;
1604 /* Sigalg peer actually uses */
1605 const SIGALG_LOOKUP *peer_sigalg;
1606 /*
1607 * Set if corresponding CERT_PKEY can be used with current
1608 * SSL session: e.g. appropriate curve, signature algorithms etc.
1609 * If zero it can't be used at all.
1610 */
1611 uint32_t valid_flags[SSL_PKEY_NUM];
1612 /*
1613 * For servers the following masks are for the key and auth algorithms
1614 * that are supported by the certs below. For clients they are masks of
1615 * *disabled* algorithms based on the current session.
1616 */
1617 uint32_t mask_k;
1618 uint32_t mask_a;
1619 /*
1620 * The following are used by the client to see if a cipher is allowed or
1621 * not. It contains the minimum and maximum version the client's using
1622 * based on what it knows so far.
1623 */
1624 int min_ver;
1625 int max_ver;
1626 } tmp;
1627
1628 /* Connection binding to prevent renegotiation attacks */
1629 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1630 size_t previous_client_finished_len;
1631 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1632 size_t previous_server_finished_len;
1633 int send_connection_binding; /* TODOEKR */
1634
1635 # ifndef OPENSSL_NO_NEXTPROTONEG
1636 /*
1637 * Set if we saw the Next Protocol Negotiation extension from our peer.
1638 */
1639 int npn_seen;
1640 # endif
1641
1642 /*
1643 * ALPN information (we are in the process of transitioning from NPN to
1644 * ALPN.)
1645 */
1646
1647 /*
1648 * In a server these point to the selected ALPN protocol after the
1649 * ClientHello has been processed. In a client these contain the protocol
1650 * that the server selected once the ServerHello has been processed.
1651 */
1652 unsigned char *alpn_selected;
1653 size_t alpn_selected_len;
1654 /* used by the server to know what options were proposed */
1655 unsigned char *alpn_proposed;
1656 size_t alpn_proposed_len;
1657 /* used by the client to know if it actually sent alpn */
1658 int alpn_sent;
1659
1660 # ifndef OPENSSL_NO_EC
1661 /*
1662 * This is set to true if we believe that this is a version of Safari
1663 * running on OS X 10.6 or newer. We wish to know this because Safari on
1664 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1665 */
1666 char is_probably_safari;
1667 # endif /* !OPENSSL_NO_EC */
1668
1669 /* For clients: peer temporary key */
1670 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1671 /* The group_id for the DH/ECDH key */
1672 uint16_t group_id;
1673 EVP_PKEY *peer_tmp;
1674 # endif
1675
1676 } SSL3_STATE;
1677
1678 /* DTLS structures */
1679
1680 # ifndef OPENSSL_NO_SCTP
1681 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1682 # endif
1683
1684 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1685 # define DTLS1_MAX_MTU_OVERHEAD 48
1686
1687 /*
1688 * Flag used in message reuse to indicate the buffer contains the record
1689 * header as well as the handshake message header.
1690 */
1691 # define DTLS1_SKIP_RECORD_HEADER 2
1692
1693 struct dtls1_retransmit_state {
1694 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1695 EVP_MD_CTX *write_hash; /* used for mac generation */
1696 COMP_CTX *compress; /* compression */
1697 SSL_SESSION *session;
1698 unsigned short epoch;
1699 };
1700
1701 struct hm_header_st {
1702 unsigned char type;
1703 size_t msg_len;
1704 unsigned short seq;
1705 size_t frag_off;
1706 size_t frag_len;
1707 unsigned int is_ccs;
1708 struct dtls1_retransmit_state saved_retransmit_state;
1709 };
1710
1711 struct dtls1_timeout_st {
1712 /* Number of read timeouts so far */
1713 unsigned int read_timeouts;
1714 /* Number of write timeouts so far */
1715 unsigned int write_timeouts;
1716 /* Number of alerts received so far */
1717 unsigned int num_alerts;
1718 };
1719
1720 typedef struct hm_fragment_st {
1721 struct hm_header_st msg_header;
1722 unsigned char *fragment;
1723 unsigned char *reassembly;
1724 } hm_fragment;
1725
1726 typedef struct pqueue_st pqueue;
1727 typedef struct pitem_st pitem;
1728
1729 struct pitem_st {
1730 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1731 void *data;
1732 pitem *next;
1733 };
1734
1735 typedef struct pitem_st *piterator;
1736
1737 pitem *pitem_new(unsigned char *prio64be, void *data);
1738 void pitem_free(pitem *item);
1739 pqueue *pqueue_new(void);
1740 void pqueue_free(pqueue *pq);
1741 pitem *pqueue_insert(pqueue *pq, pitem *item);
1742 pitem *pqueue_peek(pqueue *pq);
1743 pitem *pqueue_pop(pqueue *pq);
1744 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1745 pitem *pqueue_iterator(pqueue *pq);
1746 pitem *pqueue_next(piterator *iter);
1747 size_t pqueue_size(pqueue *pq);
1748
1749 typedef struct dtls1_state_st {
1750 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1751 size_t cookie_len;
1752 unsigned int cookie_verified;
1753 /* handshake message numbers */
1754 unsigned short handshake_write_seq;
1755 unsigned short next_handshake_write_seq;
1756 unsigned short handshake_read_seq;
1757 /* Buffered handshake messages */
1758 pqueue *buffered_messages;
1759 /* Buffered (sent) handshake records */
1760 pqueue *sent_messages;
1761 size_t link_mtu; /* max on-the-wire DTLS packet size */
1762 size_t mtu; /* max DTLS packet size */
1763 struct hm_header_st w_msg_hdr;
1764 struct hm_header_st r_msg_hdr;
1765 struct dtls1_timeout_st timeout;
1766 /*
1767 * Indicates when the last handshake msg sent will timeout
1768 */
1769 struct timeval next_timeout;
1770 /* Timeout duration */
1771 unsigned int timeout_duration_us;
1772
1773 unsigned int retransmitting;
1774 # ifndef OPENSSL_NO_SCTP
1775 int shutdown_received;
1776 # endif
1777
1778 DTLS_timer_cb timer_cb;
1779
1780 } DTLS1_STATE;
1781
1782 # ifndef OPENSSL_NO_EC
1783 /*
1784 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1785 */
1786 # define EXPLICIT_PRIME_CURVE_TYPE 1
1787 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1788 # define NAMED_CURVE_TYPE 3
1789 # endif /* OPENSSL_NO_EC */
1790
1791 struct cert_pkey_st {
1792 X509 *x509;
1793 EVP_PKEY *privatekey;
1794 /* Chain for this certificate */
1795 STACK_OF(X509) *chain;
1796 /*-
1797 * serverinfo data for this certificate. The data is in TLS Extension
1798 * wire format, specifically it's a series of records like:
1799 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1800 * uint16_t length;
1801 * uint8_t data[length];
1802 */
1803 unsigned char *serverinfo;
1804 size_t serverinfo_length;
1805 };
1806 /* Retrieve Suite B flags */
1807 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1808 /* Uses to check strict mode: suite B modes are always strict */
1809 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1810 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1811
1812 typedef enum {
1813 ENDPOINT_CLIENT = 0,
1814 ENDPOINT_SERVER,
1815 ENDPOINT_BOTH
1816 } ENDPOINT;
1817
1818
1819 typedef struct {
1820 unsigned short ext_type;
1821 ENDPOINT role;
1822 /* The context which this extension applies to */
1823 unsigned int context;
1824 /*
1825 * Per-connection flags relating to this extension type: not used if
1826 * part of an SSL_CTX structure.
1827 */
1828 uint32_t ext_flags;
1829 SSL_custom_ext_add_cb_ex add_cb;
1830 SSL_custom_ext_free_cb_ex free_cb;
1831 void *add_arg;
1832 SSL_custom_ext_parse_cb_ex parse_cb;
1833 void *parse_arg;
1834 } custom_ext_method;
1835
1836 /* ext_flags values */
1837
1838 /*
1839 * Indicates an extension has been received. Used to check for unsolicited or
1840 * duplicate extensions.
1841 */
1842 # define SSL_EXT_FLAG_RECEIVED 0x1
1843 /*
1844 * Indicates an extension has been sent: used to enable sending of
1845 * corresponding ServerHello extension.
1846 */
1847 # define SSL_EXT_FLAG_SENT 0x2
1848
1849 typedef struct {
1850 custom_ext_method *meths;
1851 size_t meths_count;
1852 } custom_ext_methods;
1853
1854 typedef struct cert_st {
1855 /* Current active set */
1856 /*
1857 * ALWAYS points to an element of the pkeys array
1858 * Probably it would make more sense to store
1859 * an index, not a pointer.
1860 */
1861 CERT_PKEY *key;
1862 # ifndef OPENSSL_NO_DH
1863 EVP_PKEY *dh_tmp;
1864 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1865 int dh_tmp_auto;
1866 # endif
1867 /* Flags related to certificates */
1868 uint32_t cert_flags;
1869 CERT_PKEY pkeys[SSL_PKEY_NUM];
1870 /* Custom certificate types sent in certificate request message. */
1871 uint8_t *ctype;
1872 size_t ctype_len;
1873 /*
1874 * supported signature algorithms. When set on a client this is sent in
1875 * the client hello as the supported signature algorithms extension. For
1876 * servers it represents the signature algorithms we are willing to use.
1877 */
1878 uint16_t *conf_sigalgs;
1879 /* Size of above array */
1880 size_t conf_sigalgslen;
1881 /*
1882 * Client authentication signature algorithms, if not set then uses
1883 * conf_sigalgs. On servers these will be the signature algorithms sent
1884 * to the client in a certificate request for TLS 1.2. On a client this
1885 * represents the signature algorithms we are willing to use for client
1886 * authentication.
1887 */
1888 uint16_t *client_sigalgs;
1889 /* Size of above array */
1890 size_t client_sigalgslen;
1891 /*
1892 * Signature algorithms shared by client and server: cached because these
1893 * are used most often.
1894 */
1895 const SIGALG_LOOKUP **shared_sigalgs;
1896 size_t shared_sigalgslen;
1897 /*
1898 * Certificate setup callback: if set is called whenever a certificate
1899 * may be required (client or server). the callback can then examine any
1900 * appropriate parameters and setup any certificates required. This
1901 * allows advanced applications to select certificates on the fly: for
1902 * example based on supported signature algorithms or curves.
1903 */
1904 int (*cert_cb) (SSL *ssl, void *arg);
1905 void *cert_cb_arg;
1906 /*
1907 * Optional X509_STORE for chain building or certificate validation If
1908 * NULL the parent SSL_CTX store is used instead.
1909 */
1910 X509_STORE *chain_store;
1911 X509_STORE *verify_store;
1912 /* Custom extensions */
1913 custom_ext_methods custext;
1914 /* Security callback */
1915 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1916 void *other, void *ex);
1917 /* Security level */
1918 int sec_level;
1919 void *sec_ex;
1920 # ifndef OPENSSL_NO_PSK
1921 /* If not NULL psk identity hint to use for servers */
1922 char *psk_identity_hint;
1923 # endif
1924 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
1925 CRYPTO_RWLOCK *lock;
1926 } CERT;
1927
1928 # define FP_ICC (int (*)(const void *,const void *))
1929
1930 /*
1931 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1932 * of a mess of functions, but hell, think of it as an opaque structure :-)
1933 */
1934 typedef struct ssl3_enc_method {
1935 int (*enc) (SSL *, SSL3_RECORD *, size_t, int);
1936 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
1937 int (*setup_key_block) (SSL *);
1938 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1939 size_t, size_t *);
1940 int (*change_cipher_state) (SSL *, int);
1941 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
1942 const char *client_finished_label;
1943 size_t client_finished_label_len;
1944 const char *server_finished_label;
1945 size_t server_finished_label_len;
1946 int (*alert_value) (int);
1947 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1948 const char *, size_t,
1949 const unsigned char *, size_t,
1950 int use_context);
1951 /* Various flags indicating protocol version requirements */
1952 uint32_t enc_flags;
1953 /* Set the handshake header */
1954 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
1955 /* Close construction of the handshake message */
1956 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
1957 /* Write out handshake message */
1958 int (*do_write) (SSL *s);
1959 } SSL3_ENC_METHOD;
1960
1961 # define ssl_set_handshake_header(s, pkt, htype) \
1962 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1963 # define ssl_close_construct_packet(s, pkt, htype) \
1964 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1965 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1966
1967 /* Values for enc_flags */
1968
1969 /* Uses explicit IV for CBC mode */
1970 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1971 /* Uses signature algorithms extension */
1972 # define SSL_ENC_FLAG_SIGALGS 0x2
1973 /* Uses SHA256 default PRF */
1974 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1975 /* Is DTLS */
1976 # define SSL_ENC_FLAG_DTLS 0x8
1977 /*
1978 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1979 * apply to others in future.
1980 */
1981 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1982
1983 # ifndef OPENSSL_NO_COMP
1984 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1985 typedef struct ssl3_comp_st {
1986 int comp_id; /* The identifier byte for this compression
1987 * type */
1988 char *name; /* Text name used for the compression type */
1989 COMP_METHOD *method; /* The method :-) */
1990 } SSL3_COMP;
1991 # endif
1992
1993 typedef enum downgrade_en {
1994 DOWNGRADE_NONE,
1995 DOWNGRADE_TO_1_2,
1996 DOWNGRADE_TO_1_1
1997 } DOWNGRADE;
1998
1999 /*
2000 * Dummy status type for the status_type extension. Indicates no status type
2001 * set
2002 */
2003 #define TLSEXT_STATUSTYPE_nothing -1
2004
2005 /* Sigalgs values */
2006 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2007 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2008 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2009 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2010 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2011 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2012 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2013 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2014 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2015 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2016 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2017 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2018 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2019 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2020 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2021 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2022 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2023 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2024 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2025 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2026 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2027 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2028 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2029 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2030
2031 #define TLSEXT_SIGALG_ed25519 0x0807
2032 #define TLSEXT_SIGALG_ed448 0x0808
2033
2034 /* Known PSK key exchange modes */
2035 #define TLSEXT_KEX_MODE_KE 0x00
2036 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2037
2038 /*
2039 * Internal representations of key exchange modes
2040 */
2041 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2042 #define TLSEXT_KEX_MODE_FLAG_KE 1
2043 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2044
2045 /* An invalid index into the TLSv1.3 PSK identities */
2046 #define TLSEXT_PSK_BAD_IDENTITY -1
2047
2048 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \
2049 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2050
2051 /* A dummy signature value not valid for TLSv1.2 signature algs */
2052 #define TLSEXT_signature_rsa_pss 0x0101
2053
2054 /* TLSv1.3 downgrade protection sentinel values */
2055 extern const unsigned char tls11downgrade[8];
2056 extern const unsigned char tls12downgrade[8];
2057
2058 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2059
2060 __owur const SSL_METHOD *ssl_bad_method(int ver);
2061 __owur const SSL_METHOD *sslv3_method(void);
2062 __owur const SSL_METHOD *sslv3_server_method(void);
2063 __owur const SSL_METHOD *sslv3_client_method(void);
2064 __owur const SSL_METHOD *tlsv1_method(void);
2065 __owur const SSL_METHOD *tlsv1_server_method(void);
2066 __owur const SSL_METHOD *tlsv1_client_method(void);
2067 __owur const SSL_METHOD *tlsv1_1_method(void);
2068 __owur const SSL_METHOD *tlsv1_1_server_method(void);
2069 __owur const SSL_METHOD *tlsv1_1_client_method(void);
2070 __owur const SSL_METHOD *tlsv1_2_method(void);
2071 __owur const SSL_METHOD *tlsv1_2_server_method(void);
2072 __owur const SSL_METHOD *tlsv1_2_client_method(void);
2073 __owur const SSL_METHOD *tlsv1_3_method(void);
2074 __owur const SSL_METHOD *tlsv1_3_server_method(void);
2075 __owur const SSL_METHOD *tlsv1_3_client_method(void);
2076 __owur const SSL_METHOD *dtlsv1_method(void);
2077 __owur const SSL_METHOD *dtlsv1_server_method(void);
2078 __owur const SSL_METHOD *dtlsv1_client_method(void);
2079 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2080 __owur const SSL_METHOD *dtlsv1_2_method(void);
2081 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
2082 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
2083
2084 extern const SSL3_ENC_METHOD TLSv1_enc_data;
2085 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2086 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2087 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2088 extern const SSL3_ENC_METHOD SSLv3_enc_data;
2089 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2090 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2091
2092 /*
2093 * Flags for SSL methods
2094 */
2095 # define SSL_METHOD_NO_FIPS (1U<<0)
2096 # define SSL_METHOD_NO_SUITEB (1U<<1)
2097
2098 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2099 s_connect, enc_data) \
2100 const SSL_METHOD *func_name(void) \
2101 { \
2102 static const SSL_METHOD func_name##_data= { \
2103 version, \
2104 flags, \
2105 mask, \
2106 tls1_new, \
2107 tls1_clear, \
2108 tls1_free, \
2109 s_accept, \
2110 s_connect, \
2111 ssl3_read, \
2112 ssl3_peek, \
2113 ssl3_write, \
2114 ssl3_shutdown, \
2115 ssl3_renegotiate, \
2116 ssl3_renegotiate_check, \
2117 ssl3_read_bytes, \
2118 ssl3_write_bytes, \
2119 ssl3_dispatch_alert, \
2120 ssl3_ctrl, \
2121 ssl3_ctx_ctrl, \
2122 ssl3_get_cipher_by_char, \
2123 ssl3_put_cipher_by_char, \
2124 ssl3_pending, \
2125 ssl3_num_ciphers, \
2126 ssl3_get_cipher, \
2127 tls1_default_timeout, \
2128 &enc_data, \
2129 ssl_undefined_void_function, \
2130 ssl3_callback_ctrl, \
2131 ssl3_ctx_callback_ctrl, \
2132 }; \
2133 return &func_name##_data; \
2134 }
2135
2136 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2137 const SSL_METHOD *func_name(void) \
2138 { \
2139 static const SSL_METHOD func_name##_data= { \
2140 SSL3_VERSION, \
2141 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2142 SSL_OP_NO_SSLv3, \
2143 ssl3_new, \
2144 ssl3_clear, \
2145 ssl3_free, \
2146 s_accept, \
2147 s_connect, \
2148 ssl3_read, \
2149 ssl3_peek, \
2150 ssl3_write, \
2151 ssl3_shutdown, \
2152 ssl3_renegotiate, \
2153 ssl3_renegotiate_check, \
2154 ssl3_read_bytes, \
2155 ssl3_write_bytes, \
2156 ssl3_dispatch_alert, \
2157 ssl3_ctrl, \
2158 ssl3_ctx_ctrl, \
2159 ssl3_get_cipher_by_char, \
2160 ssl3_put_cipher_by_char, \
2161 ssl3_pending, \
2162 ssl3_num_ciphers, \
2163 ssl3_get_cipher, \
2164 ssl3_default_timeout, \
2165 &SSLv3_enc_data, \
2166 ssl_undefined_void_function, \
2167 ssl3_callback_ctrl, \
2168 ssl3_ctx_callback_ctrl, \
2169 }; \
2170 return &func_name##_data; \
2171 }
2172
2173 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2174 s_connect, enc_data) \
2175 const SSL_METHOD *func_name(void) \
2176 { \
2177 static const SSL_METHOD func_name##_data= { \
2178 version, \
2179 flags, \
2180 mask, \
2181 dtls1_new, \
2182 dtls1_clear, \
2183 dtls1_free, \
2184 s_accept, \
2185 s_connect, \
2186 ssl3_read, \
2187 ssl3_peek, \
2188 ssl3_write, \
2189 dtls1_shutdown, \
2190 ssl3_renegotiate, \
2191 ssl3_renegotiate_check, \
2192 dtls1_read_bytes, \
2193 dtls1_write_app_data_bytes, \
2194 dtls1_dispatch_alert, \
2195 dtls1_ctrl, \
2196 ssl3_ctx_ctrl, \
2197 ssl3_get_cipher_by_char, \
2198 ssl3_put_cipher_by_char, \
2199 ssl3_pending, \
2200 ssl3_num_ciphers, \
2201 ssl3_get_cipher, \
2202 dtls1_default_timeout, \
2203 &enc_data, \
2204 ssl_undefined_void_function, \
2205 ssl3_callback_ctrl, \
2206 ssl3_ctx_callback_ctrl, \
2207 }; \
2208 return &func_name##_data; \
2209 }
2210
2211 struct openssl_ssl_test_functions {
2212 int (*p_ssl_init_wbio_buffer) (SSL *s);
2213 int (*p_ssl3_setup_buffers) (SSL *s);
2214 };
2215
2216 const char *ssl_protocol_to_string(int version);
2217
2218 /* Returns true if certificate and private key for 'idx' are present */
2219 static ossl_inline int ssl_has_cert(const SSL *s, int idx)
2220 {
2221 if (idx < 0 || idx >= SSL_PKEY_NUM)
2222 return 0;
2223 return s->cert->pkeys[idx].x509 != NULL
2224 && s->cert->pkeys[idx].privatekey != NULL;
2225 }
2226
2227 static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups,
2228 size_t *pgroupslen)
2229 {
2230 *pgroups = s->session->ext.supportedgroups;
2231 *pgroupslen = s->session->ext.supportedgroups_len;
2232 }
2233
2234 # ifndef OPENSSL_UNIT_TEST
2235
2236 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2237 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2238 void ssl_clear_cipher_ctx(SSL *s);
2239 int ssl_clear_bad_session(SSL *s);
2240 __owur CERT *ssl_cert_new(void);
2241 __owur CERT *ssl_cert_dup(CERT *cert);
2242 void ssl_cert_clear_certs(CERT *c);
2243 void ssl_cert_free(CERT *c);
2244 __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss);
2245 __owur int ssl_get_new_session(SSL *s, int session);
2246 __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
2247 size_t sess_id_len);
2248 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello);
2249 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
2250 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2251 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2252 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2253 const SSL_CIPHER *const *bp);
2254 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
2255 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2256 STACK_OF(SSL_CIPHER) **cipher_list,
2257 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2258 const char *rule_str,
2259 CERT *c);
2260 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format);
2261 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
2262 STACK_OF(SSL_CIPHER) **skp,
2263 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2264 int fatal);
2265 void ssl_update_cache(SSL *s, int mode);
2266 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
2267 const EVP_MD **md, int *mac_pkey_type,
2268 size_t *mac_secret_size, SSL_COMP **comp,
2269 int use_etm);
2270 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2271 size_t *int_overhead, size_t *blocksize,
2272 size_t *ext_overhead);
2273 __owur int ssl_cert_is_disabled(size_t idx);
2274 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
2275 const unsigned char *ptr,
2276 int all);
2277 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2278 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2279 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2280 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2281 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2282 __owur int ssl_cert_set_current(CERT *c, long arg);
2283 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2284
2285 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2286 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2287 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2288 int ref);
2289
2290 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
2291 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2292 void *other);
2293
2294 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
2295 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2296 size_t *pidx);
2297 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2298
2299 int ssl_undefined_function(SSL *s);
2300 __owur int ssl_undefined_void_function(void);
2301 __owur int ssl_undefined_const_function(const SSL *s);
2302 __owur int ssl_get_server_cert_serverinfo(SSL *s,
2303 const unsigned char **serverinfo,
2304 size_t *serverinfo_length);
2305 void ssl_set_masks(SSL *s);
2306 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2307 __owur int ssl_x509err2alert(int type);
2308 void ssl_sort_cipher_list(void);
2309 int ssl_load_ciphers(void);
2310 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
2311 size_t len, DOWNGRADE dgrd);
2312 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
2313 int free_pms);
2314 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
2315 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2316 int genmaster);
2317 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2318 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl);
2319 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl);
2320
2321 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2322 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2323 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2324 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2325 size_t *len);
2326 int ssl3_init_finished_mac(SSL *s);
2327 __owur int ssl3_setup_key_block(SSL *s);
2328 __owur int ssl3_change_cipher_state(SSL *s, int which);
2329 void ssl3_cleanup_key_block(SSL *s);
2330 __owur int ssl3_do_write(SSL *s, int type);
2331 int ssl3_send_alert(SSL *s, int level, int desc);
2332 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2333 unsigned char *p, size_t len,
2334 size_t *secret_size);
2335 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
2336 __owur int ssl3_num_ciphers(void);
2337 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2338 int ssl3_renegotiate(SSL *ssl);
2339 int ssl3_renegotiate_check(SSL *ssl, int initok);
2340 __owur int ssl3_dispatch_alert(SSL *s);
2341 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
2342 unsigned char *p);
2343 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
2344 void ssl3_free_digest_list(SSL *s);
2345 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
2346 CERT_PKEY *cpk);
2347 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
2348 STACK_OF(SSL_CIPHER) *clnt,
2349 STACK_OF(SSL_CIPHER) *srvr);
2350 __owur int ssl3_digest_cached_records(SSL *s, int keep);
2351 __owur int ssl3_new(SSL *s);
2352 void ssl3_free(SSL *s);
2353 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2354 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2355 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2356 __owur int ssl3_shutdown(SSL *s);
2357 int ssl3_clear(SSL *s);
2358 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2359 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2360 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2361 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2362
2363 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
2364 __owur long ssl3_default_timeout(void);
2365
2366 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2367 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2368 __owur int tls_setup_handshake(SSL *s);
2369 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2370 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2371 __owur int ssl3_handshake_write(SSL *s);
2372
2373 __owur int ssl_allow_compression(SSL *s);
2374
2375 __owur int ssl_version_supported(const SSL *s, int version,
2376 const SSL_METHOD **meth);
2377
2378 __owur int ssl_set_client_hello_version(SSL *s);
2379 __owur int ssl_check_version_downgrade(SSL *s);
2380 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2381 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
2382 DOWNGRADE *dgrd);
2383 __owur int ssl_choose_client_version(SSL *s, int version,
2384 RAW_EXTENSION *extensions);
2385 __owur int ssl_get_min_max_version(const SSL *s, int *min_version,
2386 int *max_version, int *real_max);
2387
2388 __owur long tls1_default_timeout(void);
2389 __owur int dtls1_do_write(SSL *s, int type);
2390 void dtls1_set_message_header(SSL *s,
2391 unsigned char mt,
2392 size_t len,
2393 size_t frag_off, size_t frag_len);
2394
2395 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2396 size_t *written);
2397
2398 __owur int dtls1_read_failed(SSL *s, int code);
2399 __owur int dtls1_buffer_message(SSL *s, int ccs);
2400 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
2401 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2402 int dtls1_retransmit_buffered_messages(SSL *s);
2403 void dtls1_clear_received_buffer(SSL *s);
2404 void dtls1_clear_sent_buffer(SSL *s);
2405 void dtls1_get_message_header(unsigned char *data,
2406 struct hm_header_st *msg_hdr);
2407 __owur long dtls1_default_timeout(void);
2408 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2409 __owur int dtls1_check_timeout_num(SSL *s);
2410 __owur int dtls1_handle_timeout(SSL *s);
2411 void dtls1_start_timer(SSL *s);
2412 void dtls1_stop_timer(SSL *s);
2413 __owur int dtls1_is_timer_expired(SSL *s);
2414 void dtls1_double_timeout(SSL *s);
2415 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2416 size_t cookie_len);
2417 __owur size_t dtls1_min_mtu(SSL *s);
2418 void dtls1_hm_fragment_free(hm_fragment *frag);
2419 __owur int dtls1_query_mtu(SSL *s);
2420
2421 __owur int tls1_new(SSL *s);
2422 void tls1_free(SSL *s);
2423 int tls1_clear(SSL *s);
2424
2425 __owur int dtls1_new(SSL *s);
2426 void dtls1_free(SSL *s);
2427 int dtls1_clear(SSL *s);
2428 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2429 __owur int dtls1_shutdown(SSL *s);
2430
2431 __owur int dtls1_dispatch_alert(SSL *s);
2432
2433 __owur int ssl_init_wbio_buffer(SSL *s);
2434 int ssl_free_wbio_buffer(SSL *s);
2435
2436 __owur int tls1_change_cipher_state(SSL *s, int which);
2437 __owur int tls1_setup_key_block(SSL *s);
2438 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
2439 unsigned char *p);
2440 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2441 unsigned char *p, size_t len,
2442 size_t *secret_size);
2443 __owur int tls13_setup_key_block(SSL *s);
2444 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
2445 unsigned char *p);
2446 __owur int tls13_change_cipher_state(SSL *s, int which);
2447 __owur int tls13_update_key(SSL *s, int send);
2448 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
2449 const unsigned char *secret,
2450 const unsigned char *label, size_t labellen,
2451 const unsigned char *data, size_t datalen,
2452 unsigned char *out, size_t outlen);
2453 __owur int tls13_derive_key(SSL *s, const EVP_MD *md,
2454 const unsigned char *secret, unsigned char *key,
2455 size_t keylen);
2456 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
2457 const unsigned char *secret, unsigned char *iv,
2458 size_t ivlen);
2459 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
2460 const unsigned char *secret,
2461 unsigned char *fin, size_t finlen);
2462 int tls13_generate_secret(SSL *s, const EVP_MD *md,
2463 const unsigned char *prevsecret,
2464 const unsigned char *insecret,
2465 size_t insecretlen,
2466 unsigned char *outsecret);
2467 __owur int tls13_generate_handshake_secret(SSL *s,
2468 const unsigned char *insecret,
2469 size_t insecretlen);
2470 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
2471 unsigned char *prev, size_t prevlen,
2472 size_t *secret_size);
2473 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2474 const char *label, size_t llen,
2475 const unsigned char *p, size_t plen,
2476 int use_context);
2477 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2478 const char *label, size_t llen,
2479 const unsigned char *context,
2480 size_t contextlen, int use_context);
2481 __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out,
2482 size_t olen, const char *label,
2483 size_t llen,
2484 const unsigned char *context,
2485 size_t contextlen);
2486 __owur int tls1_alert_code(int code);
2487 __owur int tls13_alert_code(int code);
2488 __owur int ssl3_alert_code(int code);
2489
2490 # ifndef OPENSSL_NO_EC
2491 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2492 # endif
2493
2494 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2495
2496 # ifndef OPENSSL_NO_EC
2497
2498 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id);
2499 __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves);
2500 __owur uint16_t tls1_shared_group(SSL *s, int nmatch);
2501 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2502 int *curves, size_t ncurves);
2503 __owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen,
2504 const char *str);
2505 void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
2506 size_t *num_formats);
2507 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2508 __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id);
2509 __owur EVP_PKEY *ssl_generate_param_group(uint16_t id);
2510 # endif /* OPENSSL_NO_EC */
2511
2512 __owur int tls_curve_allowed(SSL *s, uint16_t curve, int op);
2513 void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups,
2514 size_t *pgroupslen);
2515
2516 __owur int tls1_set_server_sigalgs(SSL *s);
2517
2518 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
2519 SSL_SESSION **ret);
2520 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick,
2521 size_t eticklen,
2522 const unsigned char *sess_id,
2523 size_t sesslen, SSL_SESSION **psess);
2524
2525 __owur int tls_use_ticket(SSL *s);
2526
2527 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2528
2529 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2530 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2531 int client);
2532 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2533 int client);
2534 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2535 int idx);
2536 void tls1_set_cert_validity(SSL *s);
2537
2538 # ifndef OPENSSL_NO_CT
2539 __owur int ssl_validate_ct(SSL *s);
2540 # endif
2541
2542 # ifndef OPENSSL_NO_DH
2543 __owur DH *ssl_get_auto_dh(SSL *s);
2544 # endif
2545
2546 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2547 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
2548 int vfy);
2549
2550 int tls_choose_sigalg(SSL *s, int fatalerrs);
2551
2552 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2553 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2554 __owur long ssl_get_algorithm2(SSL *s);
2555 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
2556 const uint16_t *psig, size_t psiglen);
2557 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2558 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert);
2559 __owur int tls1_process_sigalgs(SSL *s);
2560 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
2561 __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd);
2562 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
2563 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
2564 __owur int ssl_set_client_disabled(SSL *s);
2565 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op, int echde);
2566
2567 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
2568 size_t *hashlen);
2569 __owur const EVP_MD *ssl_md(int idx);
2570 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2571 __owur const EVP_MD *ssl_prf_md(SSL *s);
2572
2573 /*
2574 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2575 * with |ssl|, if logging is enabled. It returns one on success and zero on
2576 * failure. The entry is identified by the first 8 bytes of
2577 * |encrypted_premaster|.
2578 */
2579 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
2580 const uint8_t *encrypted_premaster,
2581 size_t encrypted_premaster_len,
2582 const uint8_t *premaster,
2583 size_t premaster_len);
2584
2585 /*
2586 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2587 * logging is available. It returns one on success and zero on failure. It tags
2588 * the entry with |label|.
2589 */
2590 __owur int ssl_log_secret(SSL *ssl, const char *label,
2591 const uint8_t *secret, size_t secret_len);
2592
2593 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2594 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2595 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2596 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2597 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2598 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2599 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2600 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2601
2602 /* s3_cbc.c */
2603 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2604 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2605 unsigned char *md_out,
2606 size_t *md_out_size,
2607 const unsigned char header[13],
2608 const unsigned char *data,
2609 size_t data_plus_mac_size,
2610 size_t data_plus_mac_plus_padding_size,
2611 const unsigned char *mac_secret,
2612 size_t mac_secret_length, char is_sslv3);
2613
2614 __owur int srp_generate_server_master_secret(SSL *s);
2615 __owur int srp_generate_client_master_secret(SSL *s);
2616 __owur int srp_verify_server_param(SSL *s);
2617
2618 /* statem/statem_srvr.c */
2619
2620 __owur int send_certificate_request(SSL *s);
2621
2622 /* statem/extensions_cust.c */
2623
2624 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2625 ENDPOINT role, unsigned int ext_type,
2626 size_t *idx);
2627
2628 void custom_ext_init(custom_ext_methods *meths);
2629
2630 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
2631 const unsigned char *ext_data, size_t ext_size,
2632 X509 *x, size_t chainidx);
2633 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
2634 size_t chainidx, int maxversion);
2635
2636 __owur int custom_exts_copy(custom_ext_methods *dst,
2637 const custom_ext_methods *src);
2638 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2639 const custom_ext_methods *src);
2640 void custom_exts_free(custom_ext_methods *exts);
2641
2642 void ssl_comp_free_compression_methods_int(void);
2643
2644 /* ssl_mcnf.c */
2645 void ssl_ctx_system_config(SSL_CTX *ctx);
2646
2647 # else /* OPENSSL_UNIT_TEST */
2648
2649 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2650 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2651
2652 # endif
2653 #endif