1 /*
2 * Copyright 1995-2022 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 Apache License 2.0 (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 OSSL_SSL_LOCAL_H
13 # define OSSL_SSL_LOCAL_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/dsa.h>
25 # include <openssl/err.h>
26 # include <openssl/ssl.h>
27 # include <openssl/async.h>
28 # include <openssl/symhacks.h>
29 # include <openssl/ct.h>
30 # include "record/record.h"
31 # include "statem/statem.h"
32 # include "internal/packet.h"
33 # include "internal/dane.h"
34 # include "internal/refcount.h"
35 # include "internal/tsan_assist.h"
36 # include "internal/bio.h"
37 # include "internal/ktls.h"
38
39 # ifdef OPENSSL_BUILD_SHLIBSSL
40 # undef OPENSSL_EXTERN
41 # define OPENSSL_EXTERN OPENSSL_EXPORT
42 # endif
43
44 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
45 l|=(((unsigned long)(*((c)++)))<< 8), \
46 l|=(((unsigned long)(*((c)++)))<<16), \
47 l|=(((unsigned long)(*((c)++)))<<24))
48
49 /* NOTE - c is not incremented as per c2l */
50 # define c2ln(c,l1,l2,n) { \
51 c+=n; \
52 l1=l2=0; \
53 switch (n) { \
54 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
55 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
56 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
57 case 5: l2|=((unsigned long)(*(--(c)))); \
58 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
59 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
60 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
61 case 1: l1|=((unsigned long)(*(--(c)))); \
62 } \
63 }
64
65 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
66 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
68 *((c)++)=(unsigned char)(((l)>>24)&0xff))
69
70 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
71 l|=((unsigned long)(*((c)++)))<<16, \
72 l|=((unsigned long)(*((c)++)))<< 8, \
73 l|=((unsigned long)(*((c)++))))
74
75 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
76 l|=((uint64_t)(*((c)++)))<<48, \
77 l|=((uint64_t)(*((c)++)))<<40, \
78 l|=((uint64_t)(*((c)++)))<<32, \
79 l|=((uint64_t)(*((c)++)))<<24, \
80 l|=((uint64_t)(*((c)++)))<<16, \
81 l|=((uint64_t)(*((c)++)))<< 8, \
82 l|=((uint64_t)(*((c)++))))
83
84
85 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
86 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
87 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
88 *((c)++)=(unsigned char)(((l) )&0xff))
89
90 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
93 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
94 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
95 *((c)++)=(unsigned char)(((l) )&0xff))
96
97 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
102 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
103 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
104 *((c)++)=(unsigned char)(((l) )&0xff))
105
106 /* NOTE - c is not incremented as per l2c */
107 # define l2cn(l1,l2,c,n) { \
108 c+=n; \
109 switch (n) { \
110 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
111 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
112 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
113 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
114 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
115 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
116 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
117 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
118 } \
119 }
120
121 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
122 (((unsigned int)((c)[1])) )),(c)+=2)
123 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
124 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
125
126 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
127 (((unsigned long)((c)[1]))<< 8)| \
128 (((unsigned long)((c)[2])) )),(c)+=3)
129
130 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
131 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
132 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
133
134 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
135 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
136
137 /*
138 * DTLS version numbers are strange because they're inverted. Except for
139 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
140 */
141 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
142 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
143 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
144 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
145 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
146
147
148 /*
149 * Define the Bitmasks for SSL_CIPHER.algorithms.
150 * This bits are used packed as dense as possible. If new methods/ciphers
151 * etc will be added, the bits a likely to change, so this information
152 * is for internal library use only, even though SSL_CIPHER.algorithms
153 * can be publicly accessed.
154 * Use the according functions for cipher management instead.
155 *
156 * The bit mask handling in the selection and sorting scheme in
157 * ssl_create_cipher_list() has only limited capabilities, reflecting
158 * that the different entities within are mutually exclusive:
159 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
160 */
161
162 /* Bits for algorithm_mkey (key exchange algorithm) */
163 /* RSA key exchange */
164 # define SSL_kRSA 0x00000001U
165 /* tmp DH key no DH cert */
166 # define SSL_kDHE 0x00000002U
167 /* synonym */
168 # define SSL_kEDH SSL_kDHE
169 /* ephemeral ECDH */
170 # define SSL_kECDHE 0x00000004U
171 /* synonym */
172 # define SSL_kEECDH SSL_kECDHE
173 /* PSK */
174 # define SSL_kPSK 0x00000008U
175 /* GOST key exchange */
176 # define SSL_kGOST 0x00000010U
177 /* SRP */
178 # define SSL_kSRP 0x00000020U
179
180 # define SSL_kRSAPSK 0x00000040U
181 # define SSL_kECDHEPSK 0x00000080U
182 # define SSL_kDHEPSK 0x00000100U
183 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
184 # define SSL_kGOST18 0x00000200U
185
186 /* all PSK */
187
188 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
189
190 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
191 # define SSL_kANY 0x00000000U
192
193 /* Bits for algorithm_auth (server authentication) */
194 /* RSA auth */
195 # define SSL_aRSA 0x00000001U
196 /* DSS auth */
197 # define SSL_aDSS 0x00000002U
198 /* no auth (i.e. use ADH or AECDH) */
199 # define SSL_aNULL 0x00000004U
200 /* ECDSA auth*/
201 # define SSL_aECDSA 0x00000008U
202 /* PSK auth */
203 # define SSL_aPSK 0x00000010U
204 /* GOST R 34.10-2001 signature auth */
205 # define SSL_aGOST01 0x00000020U
206 /* SRP auth */
207 # define SSL_aSRP 0x00000040U
208 /* GOST R 34.10-2012 signature auth */
209 # define SSL_aGOST12 0x00000080U
210 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
211 # define SSL_aANY 0x00000000U
212 /* All bits requiring a certificate */
213 #define SSL_aCERT \
214 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
215
216 /* Bits for algorithm_enc (symmetric encryption) */
217 # define SSL_DES 0x00000001U
218 # define SSL_3DES 0x00000002U
219 # define SSL_RC4 0x00000004U
220 # define SSL_RC2 0x00000008U
221 # define SSL_IDEA 0x00000010U
222 # define SSL_eNULL 0x00000020U
223 # define SSL_AES128 0x00000040U
224 # define SSL_AES256 0x00000080U
225 # define SSL_CAMELLIA128 0x00000100U
226 # define SSL_CAMELLIA256 0x00000200U
227 # define SSL_eGOST2814789CNT 0x00000400U
228 # define SSL_SEED 0x00000800U
229 # define SSL_AES128GCM 0x00001000U
230 # define SSL_AES256GCM 0x00002000U
231 # define SSL_AES128CCM 0x00004000U
232 # define SSL_AES256CCM 0x00008000U
233 # define SSL_AES128CCM8 0x00010000U
234 # define SSL_AES256CCM8 0x00020000U
235 # define SSL_eGOST2814789CNT12 0x00040000U
236 # define SSL_CHACHA20POLY1305 0x00080000U
237 # define SSL_ARIA128GCM 0x00100000U
238 # define SSL_ARIA256GCM 0x00200000U
239 # define SSL_MAGMA 0x00400000U
240 # define SSL_KUZNYECHIK 0x00800000U
241
242 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
243 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
244 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
245 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
246 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
247 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
248 # define SSL_ARIA (SSL_ARIAGCM)
249 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
250 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
251 | SSL_CAMELLIA256 | SSL_SEED)
252
253 /* Bits for algorithm_mac (symmetric authentication) */
254
255 # define SSL_MD5 0x00000001U
256 # define SSL_SHA1 0x00000002U
257 # define SSL_GOST94 0x00000004U
258 # define SSL_GOST89MAC 0x00000008U
259 # define SSL_SHA256 0x00000010U
260 # define SSL_SHA384 0x00000020U
261 /* Not a real MAC, just an indication it is part of cipher */
262 # define SSL_AEAD 0x00000040U
263 # define SSL_GOST12_256 0x00000080U
264 # define SSL_GOST89MAC12 0x00000100U
265 # define SSL_GOST12_512 0x00000200U
266 # define SSL_MAGMAOMAC 0x00000400U
267 # define SSL_KUZNYECHIKOMAC 0x00000800U
268
269 /*
270 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
271 * sure to update this constant too
272 */
273
274 # define SSL_MD_MD5_IDX 0
275 # define SSL_MD_SHA1_IDX 1
276 # define SSL_MD_GOST94_IDX 2
277 # define SSL_MD_GOST89MAC_IDX 3
278 # define SSL_MD_SHA256_IDX 4
279 # define SSL_MD_SHA384_IDX 5
280 # define SSL_MD_GOST12_256_IDX 6
281 # define SSL_MD_GOST89MAC12_IDX 7
282 # define SSL_MD_GOST12_512_IDX 8
283 # define SSL_MD_MD5_SHA1_IDX 9
284 # define SSL_MD_SHA224_IDX 10
285 # define SSL_MD_SHA512_IDX 11
286 # define SSL_MD_MAGMAOMAC_IDX 12
287 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
288 # define SSL_MAX_DIGEST 14
289
290 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
291
292 /* Bits for algorithm2 (handshake digests and other extra flags) */
293
294 /* Bits 0-7 are handshake MAC */
295 # define SSL_HANDSHAKE_MAC_MASK 0xFF
296 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
297 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
298 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
299 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
300 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
301 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
302 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
303
304 /* Bits 8-15 bits are PRF */
305 # define TLS1_PRF_DGST_SHIFT 8
306 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
307 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
308 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
309 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
310 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
311 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
312 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
313
314 /*
315 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
316 * goes into algorithm2)
317 */
318 # define TLS1_STREAM_MAC 0x10000
319 /*
320 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
321 * (currently this also goes into algorithm2)
322 */
323 # define TLS1_TLSTREE 0x20000
324
325 # define SSL_STRONG_MASK 0x0000001FU
326 # define SSL_DEFAULT_MASK 0X00000020U
327
328 # define SSL_STRONG_NONE 0x00000001U
329 # define SSL_LOW 0x00000002U
330 # define SSL_MEDIUM 0x00000004U
331 # define SSL_HIGH 0x00000008U
332 # define SSL_FIPS 0x00000010U
333 # define SSL_NOT_DEFAULT 0x00000020U
334
335 /* we have used 0000003f - 26 bits left to go */
336
337 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
338 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
339
340 /* Check if an SSL structure is using DTLS */
341 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
342
343 /* Check if we are using TLSv1.3 */
344 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
345 && (s)->method->version >= TLS1_3_VERSION \
346 && (s)->method->version != TLS_ANY_VERSION)
347
348 # define SSL_TREAT_AS_TLS13(s) \
349 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
350 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
351 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
352 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
353 || (s)->hello_retry_request == SSL_HRR_PENDING)
354
355 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3.tmp.finish_md_len == 0 \
356 || (s)->s3.tmp.peer_finish_md_len == 0)
357
358 /* See if we need explicit IV */
359 # define SSL_USE_EXPLICIT_IV(s) \
360 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
361 /*
362 * See if we use signature algorithms extension and signature algorithm
363 * before signatures.
364 */
365 # define SSL_USE_SIGALGS(s) \
366 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
367 /*
368 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
369 * apply to others in future.
370 */
371 # define SSL_USE_TLS1_2_CIPHERS(s) \
372 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
373 /*
374 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
375 * flags because it may not be set to correct version yet.
376 */
377 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
378 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
379 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
380 /*
381 * Determine if a client should send signature algorithms extension:
382 * as with TLS1.2 cipher we can't rely on method flags.
383 */
384 # define SSL_CLIENT_USE_SIGALGS(s) \
385 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
386
387 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
388 (((value) >= TLSEXT_max_fragment_length_512) && \
389 ((value) <= TLSEXT_max_fragment_length_4096))
390 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
391 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
392 # define GET_MAX_FRAGMENT_LENGTH(session) \
393 (512U << (session->ext.max_fragment_len_mode - 1))
394
395 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
396 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
397
398 /* Mostly for SSLv3 */
399 # define SSL_PKEY_RSA 0
400 # define SSL_PKEY_RSA_PSS_SIGN 1
401 # define SSL_PKEY_DSA_SIGN 2
402 # define SSL_PKEY_ECC 3
403 # define SSL_PKEY_GOST01 4
404 # define SSL_PKEY_GOST12_256 5
405 # define SSL_PKEY_GOST12_512 6
406 # define SSL_PKEY_ED25519 7
407 # define SSL_PKEY_ED448 8
408 # define SSL_PKEY_NUM 9
409
410 # define SSL_ENC_DES_IDX 0
411 # define SSL_ENC_3DES_IDX 1
412 # define SSL_ENC_RC4_IDX 2
413 # define SSL_ENC_RC2_IDX 3
414 # define SSL_ENC_IDEA_IDX 4
415 # define SSL_ENC_NULL_IDX 5
416 # define SSL_ENC_AES128_IDX 6
417 # define SSL_ENC_AES256_IDX 7
418 # define SSL_ENC_CAMELLIA128_IDX 8
419 # define SSL_ENC_CAMELLIA256_IDX 9
420 # define SSL_ENC_GOST89_IDX 10
421 # define SSL_ENC_SEED_IDX 11
422 # define SSL_ENC_AES128GCM_IDX 12
423 # define SSL_ENC_AES256GCM_IDX 13
424 # define SSL_ENC_AES128CCM_IDX 14
425 # define SSL_ENC_AES256CCM_IDX 15
426 # define SSL_ENC_AES128CCM8_IDX 16
427 # define SSL_ENC_AES256CCM8_IDX 17
428 # define SSL_ENC_GOST8912_IDX 18
429 # define SSL_ENC_CHACHA_IDX 19
430 # define SSL_ENC_ARIA128GCM_IDX 20
431 # define SSL_ENC_ARIA256GCM_IDX 21
432 # define SSL_ENC_MAGMA_IDX 22
433 # define SSL_ENC_KUZNYECHIK_IDX 23
434 # define SSL_ENC_NUM_IDX 24
435
436 /*-
437 * SSL_kRSA <- RSA_ENC
438 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
439 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
440 * SSL_aRSA <- RSA_ENC | RSA_SIGN
441 * SSL_aDSS <- DSA_SIGN
442 */
443
444 /*-
445 #define CERT_INVALID 0
446 #define CERT_PUBLIC_KEY 1
447 #define CERT_PRIVATE_KEY 2
448 */
449
450 /* Post-Handshake Authentication state */
451 typedef enum {
452 SSL_PHA_NONE = 0,
453 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
454 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
455 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
456 SSL_PHA_REQUESTED /* request received by client, or sent by server */
457 } SSL_PHA_STATE;
458
459 /* CipherSuite length. SSLv3 and all TLS versions. */
460 # define TLS_CIPHER_LEN 2
461 /* used to hold info on the particular ciphers used */
462 struct ssl_cipher_st {
463 uint32_t valid;
464 const char *name; /* text name */
465 const char *stdname; /* RFC name */
466 uint32_t id; /* id, 4 bytes, first is version */
467 /*
468 * changed in 1.0.0: these four used to be portions of a single value
469 * 'algorithms'
470 */
471 uint32_t algorithm_mkey; /* key exchange algorithm */
472 uint32_t algorithm_auth; /* server authentication */
473 uint32_t algorithm_enc; /* symmetric encryption */
474 uint32_t algorithm_mac; /* symmetric authentication */
475 int min_tls; /* minimum SSL/TLS protocol version */
476 int max_tls; /* maximum SSL/TLS protocol version */
477 int min_dtls; /* minimum DTLS protocol version */
478 int max_dtls; /* maximum DTLS protocol version */
479 uint32_t algo_strength; /* strength and export flags */
480 uint32_t algorithm2; /* Extra flags */
481 int32_t strength_bits; /* Number of bits really used */
482 uint32_t alg_bits; /* Number of bits for algorithm */
483 };
484
485 /* Used to hold SSL/TLS functions */
486 struct ssl_method_st {
487 int version;
488 unsigned flags;
489 unsigned long mask;
490 int (*ssl_new) (SSL *s);
491 int (*ssl_clear) (SSL *s);
492 void (*ssl_free) (SSL *s);
493 int (*ssl_accept) (SSL *s);
494 int (*ssl_connect) (SSL *s);
495 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
496 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
497 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
498 int (*ssl_shutdown) (SSL *s);
499 int (*ssl_renegotiate) (SSL *s);
500 int (*ssl_renegotiate_check) (SSL *s, int);
501 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
502 unsigned char *buf, size_t len, int peek,
503 size_t *readbytes);
504 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
505 size_t *written);
506 int (*ssl_dispatch_alert) (SSL *s);
507 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
508 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
509 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
510 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
511 size_t *len);
512 size_t (*ssl_pending) (const SSL *s);
513 int (*num_ciphers) (void);
514 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
515 long (*get_timeout) (void);
516 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
517 int (*ssl_version) (void);
518 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
519 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
520 };
521
522 /*
523 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
524 * consistency, even in the event of OPENSSL_NO_PSK being defined.
525 */
526 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
527
528 /*-
529 * Lets make this into an ASN.1 type structure as follows
530 * SSL_SESSION_ID ::= SEQUENCE {
531 * version INTEGER, -- structure version number
532 * SSLversion INTEGER, -- SSL version number
533 * Cipher OCTET STRING, -- the 3 byte cipher ID
534 * Session_ID OCTET STRING, -- the Session ID
535 * Master_key OCTET STRING, -- the master key
536 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
537 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
538 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
539 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
540 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
541 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
542 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
543 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
544 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
545 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
546 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
547 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
548 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
549 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
550 * }
551 * Look in ssl/ssl_asn1.c for more details
552 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
553 */
554 struct ssl_session_st {
555 int ssl_version; /* what ssl version session info is being kept
556 * in here? */
557 size_t master_key_length;
558
559 /* TLSv1.3 early_secret used for external PSKs */
560 unsigned char early_secret[EVP_MAX_MD_SIZE];
561 /*
562 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
563 * PSK
564 */
565 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
566 /* session_id - valid? */
567 size_t session_id_length;
568 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
569 /*
570 * this is used to determine whether the session is being reused in the
571 * appropriate context. It is up to the application to set this, via
572 * SSL_new
573 */
574 size_t sid_ctx_length;
575 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
576 # ifndef OPENSSL_NO_PSK
577 char *psk_identity_hint;
578 char *psk_identity;
579 # endif
580 /*
581 * Used to indicate that session resumption is not allowed. Applications
582 * can also set this bit for a new session via not_resumable_session_cb
583 * to disable session caching and tickets.
584 */
585 int not_resumable;
586 /* This is the cert and type for the other end. */
587 X509 *peer;
588 /* Certificate chain peer sent. */
589 STACK_OF(X509) *peer_chain;
590 /*
591 * when app_verify_callback accepts a session where the peer's
592 * certificate is not ok, we must remember the error for session reuse:
593 */
594 long verify_result; /* only for servers */
595 CRYPTO_REF_COUNT references;
596 time_t timeout;
597 time_t time;
598 time_t calc_timeout;
599 int timeout_ovf;
600 unsigned int compress_meth; /* Need to lookup the method */
601 const SSL_CIPHER *cipher;
602 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
603 * load the 'cipher' structure */
604 unsigned int kex_group; /* TLS group from key exchange */
605 CRYPTO_EX_DATA ex_data; /* application specific data */
606 /*
607 * These are used to make removal of session-ids more efficient and to
608 * implement a maximum cache size.
609 */
610 struct ssl_session_st *prev, *next;
611
612 struct {
613 char *hostname;
614 /* RFC4507 info */
615 unsigned char *tick; /* Session ticket */
616 size_t ticklen; /* Session ticket length */
617 /* Session lifetime hint in seconds */
618 unsigned long tick_lifetime_hint;
619 uint32_t tick_age_add;
620 /* Max number of bytes that can be sent as early data */
621 uint32_t max_early_data;
622 /* The ALPN protocol selected for this session */
623 unsigned char *alpn_selected;
624 size_t alpn_selected_len;
625 /*
626 * Maximum Fragment Length as per RFC 4366.
627 * If this value does not contain RFC 4366 allowed values (1-4) then
628 * either the Maximum Fragment Length Negotiation failed or was not
629 * performed at all.
630 */
631 uint8_t max_fragment_len_mode;
632 } ext;
633 # ifndef OPENSSL_NO_SRP
634 char *srp_username;
635 # endif
636 unsigned char *ticket_appdata;
637 size_t ticket_appdata_len;
638 uint32_t flags;
639 SSL_CTX *owner;
640 CRYPTO_RWLOCK *lock;
641 };
642
643 /* Extended master secret support */
644 # define SSL_SESS_FLAG_EXTMS 0x1
645
646 # ifndef OPENSSL_NO_SRP
647
648 typedef struct srp_ctx_st {
649 /* param for all the callbacks */
650 void *SRP_cb_arg;
651 /* set client Hello login callback */
652 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
653 /* set SRP N/g param callback for verification */
654 int (*SRP_verify_param_callback) (SSL *, void *);
655 /* set SRP client passwd callback */
656 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
657 char *login;
658 BIGNUM *N, *g, *s, *B, *A;
659 BIGNUM *a, *b, *v;
660 char *info;
661 int strength;
662 unsigned long srp_Mask;
663 } SRP_CTX;
664
665 # endif
666
667 typedef enum {
668 SSL_EARLY_DATA_NONE = 0,
669 SSL_EARLY_DATA_CONNECT_RETRY,
670 SSL_EARLY_DATA_CONNECTING,
671 SSL_EARLY_DATA_WRITE_RETRY,
672 SSL_EARLY_DATA_WRITING,
673 SSL_EARLY_DATA_WRITE_FLUSH,
674 SSL_EARLY_DATA_UNAUTH_WRITING,
675 SSL_EARLY_DATA_FINISHED_WRITING,
676 SSL_EARLY_DATA_ACCEPT_RETRY,
677 SSL_EARLY_DATA_ACCEPTING,
678 SSL_EARLY_DATA_READ_RETRY,
679 SSL_EARLY_DATA_READING,
680 SSL_EARLY_DATA_FINISHED_READING
681 } SSL_EARLY_DATA_STATE;
682
683 /*
684 * We check that the amount of unreadable early data doesn't exceed
685 * max_early_data. max_early_data is given in plaintext bytes. However if it is
686 * unreadable then we only know the number of ciphertext bytes. We also don't
687 * know how much the overhead should be because it depends on the ciphersuite.
688 * We make a small allowance. We assume 5 records of actual data plus the end
689 * of early data alert record. Each record has a tag and a content type byte.
690 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
691 * content of the alert record either which is 2 bytes.
692 */
693 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
694
695 /*
696 * The allowance we have between the client's calculated ticket age and our own.
697 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
698 * client's age calculation is different by more than this than our own then we
699 * do not allow that ticket for early_data.
700 */
701 # define TICKET_AGE_ALLOWANCE (10 * 1000)
702
703 #define MAX_COMPRESSIONS_SIZE 255
704
705 struct ssl_comp_st {
706 int id;
707 const char *name;
708 COMP_METHOD *method;
709 };
710
711 typedef struct raw_extension_st {
712 /* Raw packet data for the extension */
713 PACKET data;
714 /* Set to 1 if the extension is present or 0 otherwise */
715 int present;
716 /* Set to 1 if we have already parsed the extension or 0 otherwise */
717 int parsed;
718 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
719 unsigned int type;
720 /* Track what order extensions are received in (0-based). */
721 size_t received_order;
722 } RAW_EXTENSION;
723
724 typedef struct {
725 unsigned int isv2;
726 unsigned int legacy_version;
727 unsigned char random[SSL3_RANDOM_SIZE];
728 size_t session_id_len;
729 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
730 size_t dtls_cookie_len;
731 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
732 PACKET ciphersuites;
733 size_t compressions_len;
734 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
735 PACKET extensions;
736 size_t pre_proc_exts_len;
737 RAW_EXTENSION *pre_proc_exts;
738 } CLIENTHELLO_MSG;
739
740 /*
741 * Extension index values NOTE: Any updates to these defines should be mirrored
742 * with equivalent updates to ext_defs in extensions.c
743 */
744 typedef enum tlsext_index_en {
745 TLSEXT_IDX_renegotiate,
746 TLSEXT_IDX_server_name,
747 TLSEXT_IDX_max_fragment_length,
748 TLSEXT_IDX_srp,
749 TLSEXT_IDX_ec_point_formats,
750 TLSEXT_IDX_supported_groups,
751 TLSEXT_IDX_session_ticket,
752 TLSEXT_IDX_status_request,
753 TLSEXT_IDX_next_proto_neg,
754 TLSEXT_IDX_application_layer_protocol_negotiation,
755 TLSEXT_IDX_use_srtp,
756 TLSEXT_IDX_encrypt_then_mac,
757 TLSEXT_IDX_signed_certificate_timestamp,
758 TLSEXT_IDX_extended_master_secret,
759 TLSEXT_IDX_signature_algorithms_cert,
760 TLSEXT_IDX_post_handshake_auth,
761 TLSEXT_IDX_signature_algorithms,
762 TLSEXT_IDX_supported_versions,
763 TLSEXT_IDX_psk_kex_modes,
764 TLSEXT_IDX_key_share,
765 TLSEXT_IDX_cookie,
766 TLSEXT_IDX_cryptopro_bug,
767 TLSEXT_IDX_early_data,
768 TLSEXT_IDX_certificate_authorities,
769 TLSEXT_IDX_padding,
770 TLSEXT_IDX_psk,
771 /* Dummy index - must always be the last entry */
772 TLSEXT_IDX_num_builtins
773 } TLSEXT_INDEX;
774
775 DEFINE_LHASH_OF(SSL_SESSION);
776 /* Needed in ssl_cert.c */
777 DEFINE_LHASH_OF(X509_NAME);
778
779 # define TLSEXT_KEYNAME_LENGTH 16
780 # define TLSEXT_TICK_KEY_LENGTH 32
781
782 typedef struct ssl_ctx_ext_secure_st {
783 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
784 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
785 } SSL_CTX_EXT_SECURE;
786
787 /*
788 * Helper function for HMAC
789 * The structure should be considered opaque, it will change once the low
790 * level deprecated calls are removed. At that point it can be replaced
791 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
792 * directly.
793 */
794 typedef struct ssl_hmac_st {
795 EVP_MAC_CTX *ctx;
796 # ifndef OPENSSL_NO_DEPRECATED_3_0
797 HMAC_CTX *old_ctx;
798 # endif
799 } SSL_HMAC;
800
801 SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx);
802 void ssl_hmac_free(SSL_HMAC *ctx);
803 # ifndef OPENSSL_NO_DEPRECATED_3_0
804 HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx);
805 # endif
806 EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx);
807 int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
808 int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
809 int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len,
810 size_t max_size);
811 size_t ssl_hmac_size(const SSL_HMAC *ctx);
812
813 int ssl_get_EC_curve_nid(const EVP_PKEY *pkey);
814 __owur int tls13_set_encoded_pub_key(EVP_PKEY *pkey,
815 const unsigned char *enckey,
816 size_t enckeylen);
817
818 typedef struct tls_group_info_st {
819 char *tlsname; /* Curve Name as in TLS specs */
820 char *realname; /* Curve Name according to provider */
821 char *algorithm; /* Algorithm name to fetch */
822 unsigned int secbits; /* Bits of security (from SP800-57) */
823 uint16_t group_id; /* Group ID */
824 int mintls; /* Minimum TLS version, -1 unsupported */
825 int maxtls; /* Maximum TLS version (or 0 for undefined) */
826 int mindtls; /* Minimum DTLS version, -1 unsupported */
827 int maxdtls; /* Maximum DTLS version (or 0 for undefined) */
828 char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */
829 } TLS_GROUP_INFO;
830
831 /* flags values */
832 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
833 # define TLS_GROUP_CURVE_PRIME 0x00000001U
834 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
835 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
836 # define TLS_GROUP_FFDHE 0x00000008U
837 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
838
839 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
840
841 struct ssl_ctx_st {
842 OSSL_LIB_CTX *libctx;
843
844 const SSL_METHOD *method;
845 STACK_OF(SSL_CIPHER) *cipher_list;
846 /* same as above but sorted for lookup */
847 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
848 /* TLSv1.3 specific ciphersuites */
849 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
850 struct x509_store_st /* X509_STORE */ *cert_store;
851 LHASH_OF(SSL_SESSION) *sessions;
852 /*
853 * Most session-ids that will be cached, default is
854 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
855 */
856 size_t session_cache_size;
857 struct ssl_session_st *session_cache_head;
858 struct ssl_session_st *session_cache_tail;
859 /*
860 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
861 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
862 * means only SSL_accept will cache SSL_SESSIONS.
863 */
864 uint32_t session_cache_mode;
865 /*
866 * If timeout is not 0, it is the default timeout value set when
867 * SSL_new() is called. This has been put in to make life easier to set
868 * things up
869 */
870 long session_timeout;
871 /*
872 * If this callback is not null, it will be called each time a session id
873 * is added to the cache. If this function returns 1, it means that the
874 * callback will do a SSL_SESSION_free() when it has finished using it.
875 * Otherwise, on 0, it means the callback has finished with it. If
876 * remove_session_cb is not null, it will be called when a session-id is
877 * removed from the cache. After the call, OpenSSL will
878 * SSL_SESSION_free() it.
879 */
880 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
881 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
882 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
883 const unsigned char *data, int len,
884 int *copy);
885 struct {
886 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
887 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
888 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
889 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
890 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
891 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
892 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
893 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
894 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
895 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
896 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
897 * the cache was passed back via
898 * the callback. This indicates
899 * that the application is
900 * supplying session-id's from
901 * other processes - spooky
902 * :-) */
903 } stats;
904 #ifdef TSAN_REQUIRES_LOCKING
905 CRYPTO_RWLOCK *tsan_lock;
906 #endif
907
908 CRYPTO_REF_COUNT references;
909
910 /* if defined, these override the X509_verify_cert() calls */
911 int (*app_verify_callback) (X509_STORE_CTX *, void *);
912 void *app_verify_arg;
913 /*
914 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
915 * ('app_verify_callback' was called with just one argument)
916 */
917
918 /* Default password callback. */
919 pem_password_cb *default_passwd_callback;
920
921 /* Default password callback user data. */
922 void *default_passwd_callback_userdata;
923
924 /* get client cert callback */
925 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
926
927 /* cookie generate callback */
928 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
929 unsigned int *cookie_len);
930
931 /* verify cookie callback */
932 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
933 unsigned int cookie_len);
934
935 /* TLS1.3 app-controlled cookie generate callback */
936 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
937 size_t *cookie_len);
938
939 /* TLS1.3 verify app-controlled cookie callback */
940 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
941 size_t cookie_len);
942
943 CRYPTO_EX_DATA ex_data;
944
945 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
946 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */
947
948 STACK_OF(X509) *extra_certs;
949 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
950
951 /* Default values used when no per-SSL value is defined follow */
952
953 /* used if SSL's info_callback is NULL */
954 void (*info_callback) (const SSL *ssl, int type, int val);
955
956 /*
957 * What we put in certificate_authorities extension for TLS 1.3
958 * (ClientHello and CertificateRequest) or just client cert requests for
959 * earlier versions. If client_ca_names is populated then it is only used
960 * for client cert requests, and in preference to ca_names.
961 */
962 STACK_OF(X509_NAME) *ca_names;
963 STACK_OF(X509_NAME) *client_ca_names;
964
965 /*
966 * Default values to use in SSL structures follow (these are copied by
967 * SSL_new)
968 */
969
970 uint64_t options;
971 uint32_t mode;
972 int min_proto_version;
973 int max_proto_version;
974 size_t max_cert_list;
975
976 struct cert_st /* CERT */ *cert;
977 int read_ahead;
978
979 /* callback that allows applications to peek at protocol messages */
980 void (*msg_callback) (int write_p, int version, int content_type,
981 const void *buf, size_t len, SSL *ssl, void *arg);
982 void *msg_callback_arg;
983
984 uint32_t verify_mode;
985 size_t sid_ctx_length;
986 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
987 /* called 'verify_callback' in the SSL */
988 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
989
990 /* Default generate session ID callback. */
991 GEN_SESSION_CB generate_session_id;
992
993 X509_VERIFY_PARAM *param;
994
995 int quiet_shutdown;
996
997 # ifndef OPENSSL_NO_CT
998 CTLOG_STORE *ctlog_store; /* CT Log Store */
999 /*
1000 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1001 * If they are not, the connection should be aborted.
1002 */
1003 ssl_ct_validation_cb ct_validation_callback;
1004 void *ct_validation_callback_arg;
1005 # endif
1006
1007 /*
1008 * If we're using more than one pipeline how should we divide the data
1009 * up between the pipes?
1010 */
1011 size_t split_send_fragment;
1012 /*
1013 * Maximum amount of data to send in one fragment. actual record size can
1014 * be more than this due to padding and MAC overheads.
1015 */
1016 size_t max_send_fragment;
1017
1018 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1019 size_t max_pipelines;
1020
1021 /* The default read buffer length to use (0 means not set) */
1022 size_t default_read_buf_len;
1023
1024 # ifndef OPENSSL_NO_ENGINE
1025 /*
1026 * Engine to pass requests for client certs to
1027 */
1028 ENGINE *client_cert_engine;
1029 # endif
1030
1031 /* ClientHello callback. Mostly for extensions, but not entirely. */
1032 SSL_client_hello_cb_fn client_hello_cb;
1033 void *client_hello_cb_arg;
1034
1035 /* TLS extensions. */
1036 struct {
1037 /* TLS extensions servername callback */
1038 int (*servername_cb) (SSL *, int *, void *);
1039 void *servername_arg;
1040 /* RFC 4507 session ticket keys */
1041 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
1042 SSL_CTX_EXT_SECURE *secure;
1043 # ifndef OPENSSL_NO_DEPRECATED_3_0
1044 /* Callback to support customisation of ticket key setting */
1045 int (*ticket_key_cb) (SSL *ssl,
1046 unsigned char *name, unsigned char *iv,
1047 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
1048 #endif
1049 int (*ticket_key_evp_cb) (SSL *ssl,
1050 unsigned char *name, unsigned char *iv,
1051 EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx,
1052 int enc);
1053
1054 /* certificate status request info */
1055 /* Callback for status request */
1056 int (*status_cb) (SSL *ssl, void *arg);
1057 void *status_arg;
1058 /* ext status type used for CSR extension (OCSP Stapling) */
1059 int status_type;
1060 /* RFC 4366 Maximum Fragment Length Negotiation */
1061 uint8_t max_fragment_len_mode;
1062
1063 /* EC extension values inherited by SSL structure */
1064 size_t ecpointformats_len;
1065 unsigned char *ecpointformats;
1066
1067 size_t supportedgroups_len;
1068 uint16_t *supportedgroups;
1069
1070 uint16_t *supported_groups_default;
1071 size_t supported_groups_default_len;
1072 /*
1073 * ALPN information (we are in the process of transitioning from NPN to
1074 * ALPN.)
1075 */
1076
1077 /*-
1078 * For a server, this contains a callback function that allows the
1079 * server to select the protocol for the connection.
1080 * out: on successful return, this must point to the raw protocol
1081 * name (without the length prefix).
1082 * outlen: on successful return, this contains the length of |*out|.
1083 * in: points to the client's list of supported protocols in
1084 * wire-format.
1085 * inlen: the length of |in|.
1086 */
1087 int (*alpn_select_cb) (SSL *s,
1088 const unsigned char **out,
1089 unsigned char *outlen,
1090 const unsigned char *in,
1091 unsigned int inlen, void *arg);
1092 void *alpn_select_cb_arg;
1093
1094 /*
1095 * For a client, this contains the list of supported protocols in wire
1096 * format.
1097 */
1098 unsigned char *alpn;
1099 size_t alpn_len;
1100
1101 # ifndef OPENSSL_NO_NEXTPROTONEG
1102 /* Next protocol negotiation information */
1103
1104 /*
1105 * For a server, this contains a callback function by which the set of
1106 * advertised protocols can be provided.
1107 */
1108 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
1109 void *npn_advertised_cb_arg;
1110 /*
1111 * For a client, this contains a callback function that selects the next
1112 * protocol from the list provided by the server.
1113 */
1114 SSL_CTX_npn_select_cb_func npn_select_cb;
1115 void *npn_select_cb_arg;
1116 # endif
1117
1118 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1119 } ext;
1120
1121 # ifndef OPENSSL_NO_PSK
1122 SSL_psk_client_cb_func psk_client_callback;
1123 SSL_psk_server_cb_func psk_server_callback;
1124 # endif
1125 SSL_psk_find_session_cb_func psk_find_session_cb;
1126 SSL_psk_use_session_cb_func psk_use_session_cb;
1127
1128 # ifndef OPENSSL_NO_SRP
1129 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1130 # endif
1131
1132 /* Shared DANE context */
1133 struct dane_ctx_st dane;
1134
1135 # ifndef OPENSSL_NO_SRTP
1136 /* SRTP profiles we are willing to do from RFC 5764 */
1137 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1138 # endif
1139 /*
1140 * Callback for disabling session caching and ticket support on a session
1141 * basis, depending on the chosen cipher.
1142 */
1143 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1144
1145 CRYPTO_RWLOCK *lock;
1146
1147 /*
1148 * Callback for logging key material for use with debugging tools like
1149 * Wireshark. The callback should log `line` followed by a newline.
1150 */
1151 SSL_CTX_keylog_cb_func keylog_callback;
1152
1153 /*
1154 * The maximum number of bytes advertised in session tickets that can be
1155 * sent as early data.
1156 */
1157 uint32_t max_early_data;
1158
1159 /*
1160 * The maximum number of bytes of early data that a server will tolerate
1161 * (which should be at least as much as max_early_data).
1162 */
1163 uint32_t recv_max_early_data;
1164
1165 /* TLS1.3 padding callback */
1166 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1167 void *record_padding_arg;
1168 size_t block_padding;
1169
1170 /* Session ticket appdata */
1171 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1172 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1173 void *ticket_cb_data;
1174
1175 /* The number of TLS1.3 tickets to automatically send */
1176 size_t num_tickets;
1177
1178 /* Callback to determine if early_data is acceptable or not */
1179 SSL_allow_early_data_cb_fn allow_early_data_cb;
1180 void *allow_early_data_cb_data;
1181
1182 /* Do we advertise Post-handshake auth support? */
1183 int pha_enabled;
1184
1185 /* Callback for SSL async handling */
1186 SSL_async_callback_fn async_cb;
1187 void *async_cb_arg;
1188
1189 char *propq;
1190
1191 int ssl_mac_pkey_id[SSL_MD_NUM_IDX];
1192 const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX];
1193 const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX];
1194 size_t ssl_mac_secret_size[SSL_MD_NUM_IDX];
1195
1196 /* Cache of all sigalgs we know and whether they are available or not */
1197 struct sigalg_lookup_st *sigalg_lookup_cache;
1198
1199 TLS_GROUP_INFO *group_list;
1200 size_t group_list_len;
1201 size_t group_list_max_len;
1202
1203 /* masks of disabled algorithms */
1204 uint32_t disabled_enc_mask;
1205 uint32_t disabled_mac_mask;
1206 uint32_t disabled_mkey_mask;
1207 uint32_t disabled_auth_mask;
1208 };
1209
1210 typedef struct cert_pkey_st CERT_PKEY;
1211
1212 struct ssl_st {
1213 /*
1214 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1215 * DTLS1_VERSION)
1216 */
1217 int version;
1218 /* SSLv3 */
1219 const SSL_METHOD *method;
1220 /*
1221 * There are 2 BIO's even though they are normally both the same. This
1222 * is so data can be read and written to different handlers
1223 */
1224 /* used by SSL_read */
1225 BIO *rbio;
1226 /* used by SSL_write */
1227 BIO *wbio;
1228 /* used during session-id reuse to concatenate messages */
1229 BIO *bbio;
1230 /*
1231 * This holds a variable that indicates what we were doing when a 0 or -1
1232 * is returned. This is needed for non-blocking IO so we know what
1233 * request needs re-doing when in SSL_accept or SSL_connect
1234 */
1235 int rwstate;
1236 int (*handshake_func) (SSL *);
1237 /*
1238 * Imagine that here's a boolean member "init" that is switched as soon
1239 * as SSL_set_{accept/connect}_state is called for the first time, so
1240 * that "state" and "handshake_func" are properly initialized. But as
1241 * handshake_func is == 0 until then, we use this test instead of an
1242 * "init" member.
1243 */
1244 /* are we the server side? */
1245 int server;
1246 /*
1247 * Generate a new session or reuse an old one.
1248 * NB: For servers, the 'new' session may actually be a previously
1249 * cached session or even the previous session unless
1250 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1251 */
1252 int new_session;
1253 /* don't send shutdown packets */
1254 int quiet_shutdown;
1255 /* we have shut things down, 0x01 sent, 0x02 for received */
1256 int shutdown;
1257 /* where we are */
1258 OSSL_STATEM statem;
1259 SSL_EARLY_DATA_STATE early_data_state;
1260 BUF_MEM *init_buf; /* buffer used during init */
1261 void *init_msg; /* pointer to handshake message body, set by
1262 * ssl3_get_message() */
1263 size_t init_num; /* amount read/written */
1264 size_t init_off; /* amount read/written */
1265
1266 struct {
1267 long flags;
1268 size_t read_mac_secret_size;
1269 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1270 size_t write_mac_secret_size;
1271 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1272 unsigned char server_random[SSL3_RANDOM_SIZE];
1273 unsigned char client_random[SSL3_RANDOM_SIZE];
1274 /* flags for countermeasure against known-IV weakness */
1275 int need_empty_fragments;
1276 int empty_fragment_done;
1277 /* used during startup, digest all incoming/outgoing packets */
1278 BIO *handshake_buffer;
1279 /*
1280 * When handshake digest is determined, buffer is hashed and
1281 * freed and MD_CTX for the required digest is stored here.
1282 */
1283 EVP_MD_CTX *handshake_dgst;
1284 /*
1285 * Set whenever an expected ChangeCipherSpec message is processed.
1286 * Unset when the peer's Finished message is received.
1287 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1288 */
1289 int change_cipher_spec;
1290 int warn_alert;
1291 int fatal_alert;
1292 /*
1293 * we allow one fatal and one warning alert to be outstanding, send close
1294 * alert via the warning alert
1295 */
1296 int alert_dispatch;
1297 unsigned char send_alert[2];
1298 /*
1299 * This flag is set when we should renegotiate ASAP, basically when there
1300 * is no more data in the read or write buffers
1301 */
1302 int renegotiate;
1303 int total_renegotiations;
1304 int num_renegotiations;
1305 int in_read_app_data;
1306 struct {
1307 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1308 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1309 size_t finish_md_len;
1310 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1311 size_t peer_finish_md_len;
1312 size_t message_size;
1313 int message_type;
1314 /* used to hold the new cipher we are going to use */
1315 const SSL_CIPHER *new_cipher;
1316 EVP_PKEY *pkey; /* holds short lived key exchange key */
1317 /* used for certificate requests */
1318 int cert_req;
1319 /* Certificate types in certificate request message. */
1320 uint8_t *ctype;
1321 size_t ctype_len;
1322 /* Certificate authorities list peer sent */
1323 STACK_OF(X509_NAME) *peer_ca_names;
1324 size_t key_block_length;
1325 unsigned char *key_block;
1326 const EVP_CIPHER *new_sym_enc;
1327 const EVP_MD *new_hash;
1328 int new_mac_pkey_type;
1329 size_t new_mac_secret_size;
1330 # ifndef OPENSSL_NO_COMP
1331 const SSL_COMP *new_compression;
1332 # else
1333 char *new_compression;
1334 # endif
1335 int cert_request;
1336 /* Raw values of the cipher list from a client */
1337 unsigned char *ciphers_raw;
1338 size_t ciphers_rawlen;
1339 /* Temporary storage for premaster secret */
1340 unsigned char *pms;
1341 size_t pmslen;
1342 # ifndef OPENSSL_NO_PSK
1343 /* Temporary storage for PSK key */
1344 unsigned char *psk;
1345 size_t psklen;
1346 # endif
1347 /* Signature algorithm we actually use */
1348 const struct sigalg_lookup_st *sigalg;
1349 /* Pointer to certificate we use */
1350 CERT_PKEY *cert;
1351 /*
1352 * signature algorithms peer reports: e.g. supported signature
1353 * algorithms extension for server or as part of a certificate
1354 * request for client.
1355 * Keep track of the algorithms for TLS and X.509 usage separately.
1356 */
1357 uint16_t *peer_sigalgs;
1358 uint16_t *peer_cert_sigalgs;
1359 /* Size of above arrays */
1360 size_t peer_sigalgslen;
1361 size_t peer_cert_sigalgslen;
1362 /* Sigalg peer actually uses */
1363 const struct sigalg_lookup_st *peer_sigalg;
1364 /*
1365 * Set if corresponding CERT_PKEY can be used with current
1366 * SSL session: e.g. appropriate curve, signature algorithms etc.
1367 * If zero it can't be used at all.
1368 */
1369 uint32_t valid_flags[SSL_PKEY_NUM];
1370 /*
1371 * For servers the following masks are for the key and auth algorithms
1372 * that are supported by the certs below. For clients they are masks of
1373 * *disabled* algorithms based on the current session.
1374 */
1375 uint32_t mask_k;
1376 uint32_t mask_a;
1377 /*
1378 * The following are used by the client to see if a cipher is allowed or
1379 * not. It contains the minimum and maximum version the client's using
1380 * based on what it knows so far.
1381 */
1382 int min_ver;
1383 int max_ver;
1384 } tmp;
1385
1386 /* Connection binding to prevent renegotiation attacks */
1387 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1388 size_t previous_client_finished_len;
1389 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1390 size_t previous_server_finished_len;
1391 int send_connection_binding;
1392
1393 # ifndef OPENSSL_NO_NEXTPROTONEG
1394 /*
1395 * Set if we saw the Next Protocol Negotiation extension from our peer.
1396 */
1397 int npn_seen;
1398 # endif
1399
1400 /*
1401 * ALPN information (we are in the process of transitioning from NPN to
1402 * ALPN.)
1403 */
1404
1405 /*
1406 * In a server these point to the selected ALPN protocol after the
1407 * ClientHello has been processed. In a client these contain the protocol
1408 * that the server selected once the ServerHello has been processed.
1409 */
1410 unsigned char *alpn_selected;
1411 size_t alpn_selected_len;
1412 /* used by the server to know what options were proposed */
1413 unsigned char *alpn_proposed;
1414 size_t alpn_proposed_len;
1415 /* used by the client to know if it actually sent alpn */
1416 int alpn_sent;
1417
1418 /*
1419 * This is set to true if we believe that this is a version of Safari
1420 * running on OS X 10.6 or newer. We wish to know this because Safari on
1421 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1422 */
1423 char is_probably_safari;
1424
1425 /*
1426 * Track whether we did a key exchange this handshake or not, so
1427 * SSL_get_negotiated_group() knows whether to fall back to the
1428 * value in the SSL_SESSION.
1429 */
1430 char did_kex;
1431 /* For clients: peer temporary key */
1432 /* The group_id for the key exchange key */
1433 uint16_t group_id;
1434 EVP_PKEY *peer_tmp;
1435
1436 } s3;
1437
1438 struct dtls1_state_st *d1; /* DTLSv1 variables */
1439 /* callback that allows applications to peek at protocol messages */
1440 void (*msg_callback) (int write_p, int version, int content_type,
1441 const void *buf, size_t len, SSL *ssl, void *arg);
1442 void *msg_callback_arg;
1443 int hit; /* reusing a previous session */
1444 X509_VERIFY_PARAM *param;
1445 /* Per connection DANE state */
1446 SSL_DANE dane;
1447 /* crypto */
1448 STACK_OF(SSL_CIPHER) *peer_ciphers;
1449 STACK_OF(SSL_CIPHER) *cipher_list;
1450 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1451 /* TLSv1.3 specific ciphersuites */
1452 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1453 /*
1454 * These are the ones being used, the ones in SSL_SESSION are the ones to
1455 * be 'copied' into these ones
1456 */
1457 uint32_t mac_flags;
1458 /*
1459 * The TLS1.3 secrets.
1460 */
1461 unsigned char early_secret[EVP_MAX_MD_SIZE];
1462 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1463 unsigned char master_secret[EVP_MAX_MD_SIZE];
1464 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1465 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1466 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1467 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1468 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1469 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1470 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1471 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1472 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1473 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1474 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1475 EVP_MD_CTX *read_hash; /* used for mac generation */
1476 COMP_CTX *compress; /* compression */
1477 COMP_CTX *expand; /* uncompress */
1478 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1479 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1480 EVP_MD_CTX *write_hash; /* used for mac generation */
1481 /* session info */
1482 /* client cert? */
1483 /* This is used to hold the server certificate used */
1484 struct cert_st /* CERT */ *cert;
1485
1486 /*
1487 * The hash of all messages prior to the CertificateVerify, and the length
1488 * of that hash.
1489 */
1490 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1491 size_t cert_verify_hash_len;
1492
1493 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1494 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
1495 hello_retry_request;
1496
1497 /*
1498 * the session_id_context is used to ensure sessions are only reused in
1499 * the appropriate context
1500 */
1501 size_t sid_ctx_length;
1502 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1503 /* This can also be in the session once a session is established */
1504 SSL_SESSION *session;
1505 /* TLSv1.3 PSK session */
1506 SSL_SESSION *psksession;
1507 unsigned char *psksession_id;
1508 size_t psksession_id_len;
1509 /* Default generate session ID callback. */
1510 GEN_SESSION_CB generate_session_id;
1511 /*
1512 * The temporary TLSv1.3 session id. This isn't really a session id at all
1513 * but is a random value sent in the legacy session id field.
1514 */
1515 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
1516 size_t tmp_session_id_len;
1517 /* Used in SSL3 */
1518 /*
1519 * 0 don't care about verify failure.
1520 * 1 fail if verify fails
1521 */
1522 uint32_t verify_mode;
1523 /* fail if callback returns 0 */
1524 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1525 /* optional informational callback */
1526 void (*info_callback) (const SSL *ssl, int type, int val);
1527 /* error bytes to be written */
1528 int error;
1529 /* actual code */
1530 int error_code;
1531 # ifndef OPENSSL_NO_PSK
1532 SSL_psk_client_cb_func psk_client_callback;
1533 SSL_psk_server_cb_func psk_server_callback;
1534 # endif
1535 SSL_psk_find_session_cb_func psk_find_session_cb;
1536 SSL_psk_use_session_cb_func psk_use_session_cb;
1537
1538 SSL_CTX *ctx;
1539 /* Verified chain of peer */
1540 STACK_OF(X509) *verified_chain;
1541 long verify_result;
1542 /* extra application data */
1543 CRYPTO_EX_DATA ex_data;
1544 /*
1545 * What we put in certificate_authorities extension for TLS 1.3
1546 * (ClientHello and CertificateRequest) or just client cert requests for
1547 * earlier versions. If client_ca_names is populated then it is only used
1548 * for client cert requests, and in preference to ca_names.
1549 */
1550 STACK_OF(X509_NAME) *ca_names;
1551 STACK_OF(X509_NAME) *client_ca_names;
1552 CRYPTO_REF_COUNT references;
1553 /* protocol behaviour */
1554 uint64_t options;
1555 /* API behaviour */
1556 uint32_t mode;
1557 int min_proto_version;
1558 int max_proto_version;
1559 size_t max_cert_list;
1560 int first_packet;
1561 /*
1562 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1563 * secret and SSLv3/TLS (<=1.2) rollback check
1564 */
1565 int client_version;
1566 /*
1567 * If we're using more than one pipeline how should we divide the data
1568 * up between the pipes?
1569 */
1570 size_t split_send_fragment;
1571 /*
1572 * Maximum amount of data to send in one fragment. actual record size can
1573 * be more than this due to padding and MAC overheads.
1574 */
1575 size_t max_send_fragment;
1576 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1577 size_t max_pipelines;
1578
1579 struct {
1580 /* Built-in extension flags */
1581 uint8_t extflags[TLSEXT_IDX_num_builtins];
1582 /* TLS extension debug callback */
1583 void (*debug_cb)(SSL *s, int client_server, int type,
1584 const unsigned char *data, int len, void *arg);
1585 void *debug_arg;
1586 char *hostname;
1587 /* certificate status request info */
1588 /* Status type or -1 if no status type */
1589 int status_type;
1590 /* Raw extension data, if seen */
1591 unsigned char *scts;
1592 /* Length of raw extension data, if seen */
1593 uint16_t scts_len;
1594 /* Expect OCSP CertificateStatus message */
1595 int status_expected;
1596
1597 struct {
1598 /* OCSP status request only */
1599 STACK_OF(OCSP_RESPID) *ids;
1600 X509_EXTENSIONS *exts;
1601 /* OCSP response received or to be sent */
1602 unsigned char *resp;
1603 size_t resp_len;
1604 } ocsp;
1605
1606 /* RFC4507 session ticket expected to be received or sent */
1607 int ticket_expected;
1608 /* TLS 1.3 tickets requested by the application. */
1609 int extra_tickets_expected;
1610 size_t ecpointformats_len;
1611 /* our list */
1612 unsigned char *ecpointformats;
1613
1614 size_t peer_ecpointformats_len;
1615 /* peer's list */
1616 unsigned char *peer_ecpointformats;
1617 size_t supportedgroups_len;
1618 /* our list */
1619 uint16_t *supportedgroups;
1620
1621 size_t peer_supportedgroups_len;
1622 /* peer's list */
1623 uint16_t *peer_supportedgroups;
1624
1625 /* TLS Session Ticket extension override */
1626 TLS_SESSION_TICKET_EXT *session_ticket;
1627 /* TLS Session Ticket extension callback */
1628 tls_session_ticket_ext_cb_fn session_ticket_cb;
1629 void *session_ticket_cb_arg;
1630 /* TLS pre-shared secret session resumption */
1631 tls_session_secret_cb_fn session_secret_cb;
1632 void *session_secret_cb_arg;
1633 /*
1634 * For a client, this contains the list of supported protocols in wire
1635 * format.
1636 */
1637 unsigned char *alpn;
1638 size_t alpn_len;
1639 /*
1640 * Next protocol negotiation. For the client, this is the protocol that
1641 * we sent in NextProtocol and is set when handling ServerHello
1642 * extensions. For a server, this is the client's selected_protocol from
1643 * NextProtocol and is set when handling the NextProtocol message, before
1644 * the Finished message.
1645 */
1646 unsigned char *npn;
1647 size_t npn_len;
1648
1649 /* The available PSK key exchange modes */
1650 int psk_kex_mode;
1651
1652 /* Set to one if we have negotiated ETM */
1653 int use_etm;
1654
1655 /* Are we expecting to receive early data? */
1656 int early_data;
1657 /* Is the session suitable for early data? */
1658 int early_data_ok;
1659
1660 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1661 unsigned char *tls13_cookie;
1662 size_t tls13_cookie_len;
1663 /* Have we received a cookie from the client? */
1664 int cookieok;
1665
1666 /*
1667 * Maximum Fragment Length as per RFC 4366.
1668 * If this member contains one of the allowed values (1-4)
1669 * then we should include Maximum Fragment Length Negotiation
1670 * extension in Client Hello.
1671 * Please note that value of this member does not have direct
1672 * effect. The actual (binding) value is stored in SSL_SESSION,
1673 * as this extension is optional on server side.
1674 */
1675 uint8_t max_fragment_len_mode;
1676
1677 /*
1678 * On the client side the number of ticket identities we sent in the
1679 * ClientHello. On the server side the identity of the ticket we
1680 * selected.
1681 */
1682 int tick_identity;
1683 } ext;
1684
1685 /*
1686 * Parsed form of the ClientHello, kept around across client_hello_cb
1687 * calls.
1688 */
1689 CLIENTHELLO_MSG *clienthello;
1690
1691 /*-
1692 * no further mod of servername
1693 * 0 : call the servername extension callback.
1694 * 1 : prepare 2, allow last ack just after in server callback.
1695 * 2 : don't call servername callback, no ack in server hello
1696 */
1697 int servername_done;
1698 # ifndef OPENSSL_NO_CT
1699 /*
1700 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1701 * If they are not, the connection should be aborted.
1702 */
1703 ssl_ct_validation_cb ct_validation_callback;
1704 /* User-supplied argument that is passed to the ct_validation_callback */
1705 void *ct_validation_callback_arg;
1706 /*
1707 * Consolidated stack of SCTs from all sources.
1708 * Lazily populated by CT_get_peer_scts(SSL*)
1709 */
1710 STACK_OF(SCT) *scts;
1711 /* Have we attempted to find/parse SCTs yet? */
1712 int scts_parsed;
1713 # endif
1714 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1715 # ifndef OPENSSL_NO_SRTP
1716 /* What we'll do */
1717 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1718 /* What's been chosen */
1719 SRTP_PROTECTION_PROFILE *srtp_profile;
1720 # endif
1721 /*-
1722 * 1 if we are renegotiating.
1723 * 2 if we are a server and are inside a handshake
1724 * (i.e. not just sending a HelloRequest)
1725 */
1726 int renegotiate;
1727 /* If sending a KeyUpdate is pending */
1728 int key_update;
1729 /* Post-handshake authentication state */
1730 SSL_PHA_STATE post_handshake_auth;
1731 int pha_enabled;
1732 uint8_t* pha_context;
1733 size_t pha_context_len;
1734 int certreqs_sent;
1735 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1736
1737 # ifndef OPENSSL_NO_SRP
1738 /* ctx for SRP authentication */
1739 SRP_CTX srp_ctx;
1740 # endif
1741 /*
1742 * Callback for disabling session caching and ticket support on a session
1743 * basis, depending on the chosen cipher.
1744 */
1745 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1746 RECORD_LAYER rlayer;
1747 /* Default password callback. */
1748 pem_password_cb *default_passwd_callback;
1749 /* Default password callback user data. */
1750 void *default_passwd_callback_userdata;
1751 /* Async Job info */
1752 ASYNC_JOB *job;
1753 ASYNC_WAIT_CTX *waitctx;
1754 size_t asyncrw;
1755
1756 /*
1757 * The maximum number of bytes advertised in session tickets that can be
1758 * sent as early data.
1759 */
1760 uint32_t max_early_data;
1761 /*
1762 * The maximum number of bytes of early data that a server will tolerate
1763 * (which should be at least as much as max_early_data).
1764 */
1765 uint32_t recv_max_early_data;
1766
1767 /*
1768 * The number of bytes of early data received so far. If we accepted early
1769 * data then this is a count of the plaintext bytes. If we rejected it then
1770 * this is a count of the ciphertext bytes.
1771 */
1772 uint32_t early_data_count;
1773
1774 /* TLS1.3 padding callback */
1775 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1776 void *record_padding_arg;
1777 size_t block_padding;
1778
1779 CRYPTO_RWLOCK *lock;
1780
1781 /* The number of TLS1.3 tickets to automatically send */
1782 size_t num_tickets;
1783 /* The number of TLS1.3 tickets actually sent so far */
1784 size_t sent_tickets;
1785 /* The next nonce value to use when we send a ticket on this connection */
1786 uint64_t next_ticket_nonce;
1787
1788 /* Callback to determine if early_data is acceptable or not */
1789 SSL_allow_early_data_cb_fn allow_early_data_cb;
1790 void *allow_early_data_cb_data;
1791
1792 /* Callback for SSL async handling */
1793 SSL_async_callback_fn async_cb;
1794 void *async_cb_arg;
1795
1796 /*
1797 * Signature algorithms shared by client and server: cached because these
1798 * are used most often.
1799 */
1800 const struct sigalg_lookup_st **shared_sigalgs;
1801 size_t shared_sigalgslen;
1802 };
1803
1804 /*
1805 * Structure containing table entry of values associated with the signature
1806 * algorithms (signature scheme) extension
1807 */
1808 typedef struct sigalg_lookup_st {
1809 /* TLS 1.3 signature scheme name */
1810 const char *name;
1811 /* Raw value used in extension */
1812 uint16_t sigalg;
1813 /* NID of hash algorithm or NID_undef if no hash */
1814 int hash;
1815 /* Index of hash algorithm or -1 if no hash algorithm */
1816 int hash_idx;
1817 /* NID of signature algorithm */
1818 int sig;
1819 /* Index of signature algorithm */
1820 int sig_idx;
1821 /* Combined hash and signature NID, if any */
1822 int sigandhash;
1823 /* Required public key curve (ECDSA only) */
1824 int curve;
1825 /* Whether this signature algorithm is actually available for use */
1826 int enabled;
1827 } SIGALG_LOOKUP;
1828
1829 /*
1830 * Structure containing table entry of certificate info corresponding to
1831 * CERT_PKEY entries
1832 */
1833 typedef struct {
1834 int nid; /* NID of public key algorithm */
1835 uint32_t amask; /* authmask corresponding to key type */
1836 } SSL_CERT_LOOKUP;
1837
1838 /* DTLS structures */
1839
1840 # ifndef OPENSSL_NO_SCTP
1841 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1842 # endif
1843
1844 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1845 # define DTLS1_MAX_MTU_OVERHEAD 48
1846
1847 /*
1848 * Flag used in message reuse to indicate the buffer contains the record
1849 * header as well as the handshake message header.
1850 */
1851 # define DTLS1_SKIP_RECORD_HEADER 2
1852
1853 struct dtls1_retransmit_state {
1854 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1855 EVP_MD_CTX *write_hash; /* used for mac generation */
1856 COMP_CTX *compress; /* compression */
1857 SSL_SESSION *session;
1858 unsigned short epoch;
1859 };
1860
1861 struct hm_header_st {
1862 unsigned char type;
1863 size_t msg_len;
1864 unsigned short seq;
1865 size_t frag_off;
1866 size_t frag_len;
1867 unsigned int is_ccs;
1868 struct dtls1_retransmit_state saved_retransmit_state;
1869 };
1870
1871 typedef struct hm_fragment_st {
1872 struct hm_header_st msg_header;
1873 unsigned char *fragment;
1874 unsigned char *reassembly;
1875 } hm_fragment;
1876
1877 typedef struct pqueue_st pqueue;
1878 typedef struct pitem_st pitem;
1879
1880 struct pitem_st {
1881 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1882 void *data;
1883 pitem *next;
1884 };
1885
1886 typedef struct pitem_st *piterator;
1887
1888 pitem *pitem_new(unsigned char *prio64be, void *data);
1889 void pitem_free(pitem *item);
1890 pqueue *pqueue_new(void);
1891 void pqueue_free(pqueue *pq);
1892 pitem *pqueue_insert(pqueue *pq, pitem *item);
1893 pitem *pqueue_peek(pqueue *pq);
1894 pitem *pqueue_pop(pqueue *pq);
1895 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1896 pitem *pqueue_iterator(pqueue *pq);
1897 pitem *pqueue_next(piterator *iter);
1898 size_t pqueue_size(pqueue *pq);
1899
1900 typedef struct dtls1_state_st {
1901 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1902 size_t cookie_len;
1903 unsigned int cookie_verified;
1904 /* handshake message numbers */
1905 unsigned short handshake_write_seq;
1906 unsigned short next_handshake_write_seq;
1907 unsigned short handshake_read_seq;
1908 /* Buffered handshake messages */
1909 pqueue *buffered_messages;
1910 /* Buffered (sent) handshake records */
1911 pqueue *sent_messages;
1912 size_t link_mtu; /* max on-the-wire DTLS packet size */
1913 size_t mtu; /* max DTLS packet size */
1914 struct hm_header_st w_msg_hdr;
1915 struct hm_header_st r_msg_hdr;
1916 /* Number of alerts received so far */
1917 unsigned int timeout_num_alerts;
1918 /*
1919 * Indicates when the last handshake msg sent will timeout
1920 */
1921 struct timeval next_timeout;
1922 /* Timeout duration */
1923 unsigned int timeout_duration_us;
1924
1925 unsigned int retransmitting;
1926 # ifndef OPENSSL_NO_SCTP
1927 int shutdown_received;
1928 # endif
1929
1930 DTLS_timer_cb timer_cb;
1931
1932 } DTLS1_STATE;
1933
1934 /*
1935 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1936 */
1937 # define EXPLICIT_PRIME_CURVE_TYPE 1
1938 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1939 # define NAMED_CURVE_TYPE 3
1940
1941 struct cert_pkey_st {
1942 X509 *x509;
1943 EVP_PKEY *privatekey;
1944 /* Chain for this certificate */
1945 STACK_OF(X509) *chain;
1946 /*-
1947 * serverinfo data for this certificate. The data is in TLS Extension
1948 * wire format, specifically it's a series of records like:
1949 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1950 * uint16_t length;
1951 * uint8_t data[length];
1952 */
1953 unsigned char *serverinfo;
1954 size_t serverinfo_length;
1955 };
1956 /* Retrieve Suite B flags */
1957 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1958 /* Uses to check strict mode: suite B modes are always strict */
1959 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1960 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1961
1962 typedef enum {
1963 ENDPOINT_CLIENT = 0,
1964 ENDPOINT_SERVER,
1965 ENDPOINT_BOTH
1966 } ENDPOINT;
1967
1968
1969 typedef struct {
1970 unsigned short ext_type;
1971 ENDPOINT role;
1972 /* The context which this extension applies to */
1973 unsigned int context;
1974 /*
1975 * Per-connection flags relating to this extension type: not used if
1976 * part of an SSL_CTX structure.
1977 */
1978 uint32_t ext_flags;
1979 SSL_custom_ext_add_cb_ex add_cb;
1980 SSL_custom_ext_free_cb_ex free_cb;
1981 void *add_arg;
1982 SSL_custom_ext_parse_cb_ex parse_cb;
1983 void *parse_arg;
1984 } custom_ext_method;
1985
1986 /* ext_flags values */
1987
1988 /*
1989 * Indicates an extension has been received. Used to check for unsolicited or
1990 * duplicate extensions.
1991 */
1992 # define SSL_EXT_FLAG_RECEIVED 0x1
1993 /*
1994 * Indicates an extension has been sent: used to enable sending of
1995 * corresponding ServerHello extension.
1996 */
1997 # define SSL_EXT_FLAG_SENT 0x2
1998
1999 typedef struct {
2000 custom_ext_method *meths;
2001 size_t meths_count;
2002 } custom_ext_methods;
2003
2004 typedef struct cert_st {
2005 /* Current active set */
2006 /*
2007 * ALWAYS points to an element of the pkeys array
2008 * Probably it would make more sense to store
2009 * an index, not a pointer.
2010 */
2011 CERT_PKEY *key;
2012
2013 EVP_PKEY *dh_tmp;
2014 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
2015 int dh_tmp_auto;
2016 /* Flags related to certificates */
2017 uint32_t cert_flags;
2018 CERT_PKEY pkeys[SSL_PKEY_NUM];
2019 /* Custom certificate types sent in certificate request message. */
2020 uint8_t *ctype;
2021 size_t ctype_len;
2022 /*
2023 * supported signature algorithms. When set on a client this is sent in
2024 * the client hello as the supported signature algorithms extension. For
2025 * servers it represents the signature algorithms we are willing to use.
2026 */
2027 uint16_t *conf_sigalgs;
2028 /* Size of above array */
2029 size_t conf_sigalgslen;
2030 /*
2031 * Client authentication signature algorithms, if not set then uses
2032 * conf_sigalgs. On servers these will be the signature algorithms sent
2033 * to the client in a certificate request for TLS 1.2. On a client this
2034 * represents the signature algorithms we are willing to use for client
2035 * authentication.
2036 */
2037 uint16_t *client_sigalgs;
2038 /* Size of above array */
2039 size_t client_sigalgslen;
2040 /*
2041 * Certificate setup callback: if set is called whenever a certificate
2042 * may be required (client or server). the callback can then examine any
2043 * appropriate parameters and setup any certificates required. This
2044 * allows advanced applications to select certificates on the fly: for
2045 * example based on supported signature algorithms or curves.
2046 */
2047 int (*cert_cb) (SSL *ssl, void *arg);
2048 void *cert_cb_arg;
2049 /*
2050 * Optional X509_STORE for chain building or certificate validation If
2051 * NULL the parent SSL_CTX store is used instead.
2052 */
2053 X509_STORE *chain_store;
2054 X509_STORE *verify_store;
2055 /* Custom extensions */
2056 custom_ext_methods custext;
2057 /* Security callback */
2058 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
2059 void *other, void *ex);
2060 /* Security level */
2061 int sec_level;
2062 void *sec_ex;
2063 # ifndef OPENSSL_NO_PSK
2064 /* If not NULL psk identity hint to use for servers */
2065 char *psk_identity_hint;
2066 # endif
2067 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
2068 CRYPTO_RWLOCK *lock;
2069 } CERT;
2070
2071 # define FP_ICC (int (*)(const void *,const void *))
2072
2073 /*
2074 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2075 * of a mess of functions, but hell, think of it as an opaque structure :-)
2076 */
2077 typedef struct ssl3_enc_method {
2078 int (*enc) (SSL *, SSL3_RECORD *, size_t, int, SSL_MAC_BUF *, size_t);
2079 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
2080 int (*setup_key_block) (SSL *);
2081 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
2082 size_t, size_t *);
2083 int (*change_cipher_state) (SSL *, int);
2084 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
2085 const char *client_finished_label;
2086 size_t client_finished_label_len;
2087 const char *server_finished_label;
2088 size_t server_finished_label_len;
2089 int (*alert_value) (int);
2090 int (*export_keying_material) (SSL *, unsigned char *, size_t,
2091 const char *, size_t,
2092 const unsigned char *, size_t,
2093 int use_context);
2094 /* Various flags indicating protocol version requirements */
2095 uint32_t enc_flags;
2096 /* Set the handshake header */
2097 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
2098 /* Close construction of the handshake message */
2099 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
2100 /* Write out handshake message */
2101 int (*do_write) (SSL *s);
2102 } SSL3_ENC_METHOD;
2103
2104 # define ssl_set_handshake_header(s, pkt, htype) \
2105 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2106 # define ssl_close_construct_packet(s, pkt, htype) \
2107 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2108 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
2109
2110 /* Values for enc_flags */
2111
2112 /* Uses explicit IV for CBC mode */
2113 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2114 /* Uses signature algorithms extension */
2115 # define SSL_ENC_FLAG_SIGALGS 0x2
2116 /* Uses SHA256 default PRF */
2117 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2118 /* Is DTLS */
2119 # define SSL_ENC_FLAG_DTLS 0x8
2120 /*
2121 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2122 * apply to others in future.
2123 */
2124 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2125
2126 # ifndef OPENSSL_NO_COMP
2127 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2128 typedef struct ssl3_comp_st {
2129 int comp_id; /* The identifier byte for this compression
2130 * type */
2131 char *name; /* Text name used for the compression type */
2132 COMP_METHOD *method; /* The method :-) */
2133 } SSL3_COMP;
2134 # endif
2135
2136 typedef enum downgrade_en {
2137 DOWNGRADE_NONE,
2138 DOWNGRADE_TO_1_2,
2139 DOWNGRADE_TO_1_1
2140 } DOWNGRADE;
2141
2142 /*
2143 * Dummy status type for the status_type extension. Indicates no status type
2144 * set
2145 */
2146 #define TLSEXT_STATUSTYPE_nothing -1
2147
2148 /* Sigalgs values */
2149 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2150 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2151 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2152 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2153 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2154 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2155 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2156 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2157 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2158 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2159 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2160 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2161 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2162 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2163 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2164 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2165 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2166 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2167 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2168 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2169 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2170 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2171 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2172 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2173 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2174 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2175
2176 #define TLSEXT_SIGALG_ed25519 0x0807
2177 #define TLSEXT_SIGALG_ed448 0x0808
2178
2179 /* Known PSK key exchange modes */
2180 #define TLSEXT_KEX_MODE_KE 0x00
2181 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2182
2183 /*
2184 * Internal representations of key exchange modes
2185 */
2186 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2187 #define TLSEXT_KEX_MODE_FLAG_KE 1
2188 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2189
2190 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2191 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2192
2193 /* A dummy signature value not valid for TLSv1.2 signature algs */
2194 #define TLSEXT_signature_rsa_pss 0x0101
2195
2196 /* TLSv1.3 downgrade protection sentinel values */
2197 extern const unsigned char tls11downgrade[8];
2198 extern const unsigned char tls12downgrade[8];
2199
2200 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2201
2202 __owur const SSL_METHOD *ssl_bad_method(int ver);
2203 __owur const SSL_METHOD *sslv3_method(void);
2204 __owur const SSL_METHOD *sslv3_server_method(void);
2205 __owur const SSL_METHOD *sslv3_client_method(void);
2206 __owur const SSL_METHOD *tlsv1_method(void);
2207 __owur const SSL_METHOD *tlsv1_server_method(void);
2208 __owur const SSL_METHOD *tlsv1_client_method(void);
2209 __owur const SSL_METHOD *tlsv1_1_method(void);
2210 __owur const SSL_METHOD *tlsv1_1_server_method(void);
2211 __owur const SSL_METHOD *tlsv1_1_client_method(void);
2212 __owur const SSL_METHOD *tlsv1_2_method(void);
2213 __owur const SSL_METHOD *tlsv1_2_server_method(void);
2214 __owur const SSL_METHOD *tlsv1_2_client_method(void);
2215 __owur const SSL_METHOD *tlsv1_3_method(void);
2216 __owur const SSL_METHOD *tlsv1_3_server_method(void);
2217 __owur const SSL_METHOD *tlsv1_3_client_method(void);
2218 __owur const SSL_METHOD *dtlsv1_method(void);
2219 __owur const SSL_METHOD *dtlsv1_server_method(void);
2220 __owur const SSL_METHOD *dtlsv1_client_method(void);
2221 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2222 __owur const SSL_METHOD *dtlsv1_2_method(void);
2223 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
2224 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
2225
2226 extern const SSL3_ENC_METHOD TLSv1_enc_data;
2227 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2228 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2229 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2230 extern const SSL3_ENC_METHOD SSLv3_enc_data;
2231 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2232 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2233
2234 /*
2235 * Flags for SSL methods
2236 */
2237 # define SSL_METHOD_NO_FIPS (1U<<0)
2238 # define SSL_METHOD_NO_SUITEB (1U<<1)
2239
2240 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2241 s_connect, enc_data) \
2242 const SSL_METHOD *func_name(void) \
2243 { \
2244 static const SSL_METHOD func_name##_data= { \
2245 version, \
2246 flags, \
2247 mask, \
2248 tls1_new, \
2249 tls1_clear, \
2250 tls1_free, \
2251 s_accept, \
2252 s_connect, \
2253 ssl3_read, \
2254 ssl3_peek, \
2255 ssl3_write, \
2256 ssl3_shutdown, \
2257 ssl3_renegotiate, \
2258 ssl3_renegotiate_check, \
2259 ssl3_read_bytes, \
2260 ssl3_write_bytes, \
2261 ssl3_dispatch_alert, \
2262 ssl3_ctrl, \
2263 ssl3_ctx_ctrl, \
2264 ssl3_get_cipher_by_char, \
2265 ssl3_put_cipher_by_char, \
2266 ssl3_pending, \
2267 ssl3_num_ciphers, \
2268 ssl3_get_cipher, \
2269 tls1_default_timeout, \
2270 &enc_data, \
2271 ssl_undefined_void_function, \
2272 ssl3_callback_ctrl, \
2273 ssl3_ctx_callback_ctrl, \
2274 }; \
2275 return &func_name##_data; \
2276 }
2277
2278 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2279 const SSL_METHOD *func_name(void) \
2280 { \
2281 static const SSL_METHOD func_name##_data= { \
2282 SSL3_VERSION, \
2283 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2284 SSL_OP_NO_SSLv3, \
2285 ssl3_new, \
2286 ssl3_clear, \
2287 ssl3_free, \
2288 s_accept, \
2289 s_connect, \
2290 ssl3_read, \
2291 ssl3_peek, \
2292 ssl3_write, \
2293 ssl3_shutdown, \
2294 ssl3_renegotiate, \
2295 ssl3_renegotiate_check, \
2296 ssl3_read_bytes, \
2297 ssl3_write_bytes, \
2298 ssl3_dispatch_alert, \
2299 ssl3_ctrl, \
2300 ssl3_ctx_ctrl, \
2301 ssl3_get_cipher_by_char, \
2302 ssl3_put_cipher_by_char, \
2303 ssl3_pending, \
2304 ssl3_num_ciphers, \
2305 ssl3_get_cipher, \
2306 ssl3_default_timeout, \
2307 &SSLv3_enc_data, \
2308 ssl_undefined_void_function, \
2309 ssl3_callback_ctrl, \
2310 ssl3_ctx_callback_ctrl, \
2311 }; \
2312 return &func_name##_data; \
2313 }
2314
2315 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2316 s_connect, enc_data) \
2317 const SSL_METHOD *func_name(void) \
2318 { \
2319 static const SSL_METHOD func_name##_data= { \
2320 version, \
2321 flags, \
2322 mask, \
2323 dtls1_new, \
2324 dtls1_clear, \
2325 dtls1_free, \
2326 s_accept, \
2327 s_connect, \
2328 ssl3_read, \
2329 ssl3_peek, \
2330 ssl3_write, \
2331 dtls1_shutdown, \
2332 ssl3_renegotiate, \
2333 ssl3_renegotiate_check, \
2334 dtls1_read_bytes, \
2335 dtls1_write_app_data_bytes, \
2336 dtls1_dispatch_alert, \
2337 dtls1_ctrl, \
2338 ssl3_ctx_ctrl, \
2339 ssl3_get_cipher_by_char, \
2340 ssl3_put_cipher_by_char, \
2341 ssl3_pending, \
2342 ssl3_num_ciphers, \
2343 ssl3_get_cipher, \
2344 dtls1_default_timeout, \
2345 &enc_data, \
2346 ssl_undefined_void_function, \
2347 ssl3_callback_ctrl, \
2348 ssl3_ctx_callback_ctrl, \
2349 }; \
2350 return &func_name##_data; \
2351 }
2352
2353 struct openssl_ssl_test_functions {
2354 int (*p_ssl_init_wbio_buffer) (SSL *s);
2355 int (*p_ssl3_setup_buffers) (SSL *s);
2356 };
2357
2358 const char *ssl_protocol_to_string(int version);
2359
2360 /* Returns true if certificate and private key for 'idx' are present */
ssl_has_cert(const SSL * s,int idx)2361 static ossl_inline int ssl_has_cert(const SSL *s, int idx)
2362 {
2363 if (idx < 0 || idx >= SSL_PKEY_NUM)
2364 return 0;
2365 return s->cert->pkeys[idx].x509 != NULL
2366 && s->cert->pkeys[idx].privatekey != NULL;
2367 }
2368
tls1_get_peer_groups(SSL * s,const uint16_t ** pgroups,size_t * pgroupslen)2369 static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups,
2370 size_t *pgroupslen)
2371 {
2372 *pgroups = s->ext.peer_supportedgroups;
2373 *pgroupslen = s->ext.peer_supportedgroups_len;
2374 }
2375
2376 # ifndef OPENSSL_UNIT_TEST
2377
2378 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2379 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2380 void ssl_clear_cipher_ctx(SSL *s);
2381 int ssl_clear_bad_session(SSL *s);
2382 __owur CERT *ssl_cert_new(void);
2383 __owur CERT *ssl_cert_dup(CERT *cert);
2384 void ssl_cert_clear_certs(CERT *c);
2385 void ssl_cert_free(CERT *c);
2386 __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss);
2387 __owur int ssl_get_new_session(SSL *s, int session);
2388 __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
2389 size_t sess_id_len);
2390 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello);
2391 __owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket);
2392 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2393 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2394 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2395 const SSL_CIPHER *const *bp);
2396 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
2397 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2398 STACK_OF(SSL_CIPHER) **cipher_list,
2399 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2400 const char *rule_str,
2401 CERT *c);
2402 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format);
2403 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
2404 STACK_OF(SSL_CIPHER) **skp,
2405 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2406 int fatal);
2407 void ssl_update_cache(SSL *s, int mode);
2408 __owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc,
2409 const EVP_CIPHER **enc);
2410 __owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s,
2411 const EVP_CIPHER **enc, const EVP_MD **md,
2412 int *mac_pkey_type, size_t *mac_secret_size,
2413 SSL_COMP **comp, int use_etm);
2414 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2415 size_t *int_overhead, size_t *blocksize,
2416 size_t *ext_overhead);
2417 __owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx);
2418 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
2419 const unsigned char *ptr,
2420 int all);
2421 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2422 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2423 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2424 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2425 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2426 __owur int ssl_cert_set_current(CERT *c, long arg);
2427 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2428
2429 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2430 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2431 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2432 int ref);
2433 __owur int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain);
2434
2435 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
2436 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2437 void *other);
2438 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp);
2439
2440 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
2441 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2442 size_t *pidx);
2443 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2444
2445 int ssl_undefined_function(SSL *s);
2446 __owur int ssl_undefined_void_function(void);
2447 __owur int ssl_undefined_const_function(const SSL *s);
2448 __owur int ssl_get_server_cert_serverinfo(SSL *s,
2449 const unsigned char **serverinfo,
2450 size_t *serverinfo_length);
2451 void ssl_set_masks(SSL *s);
2452 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2453 __owur int ssl_x509err2alert(int type);
2454 void ssl_sort_cipher_list(void);
2455 int ssl_load_ciphers(SSL_CTX *ctx);
2456 __owur int ssl_setup_sig_algs(SSL_CTX *ctx);
2457 int ssl_load_groups(SSL_CTX *ctx);
2458 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
2459 size_t len, DOWNGRADE dgrd);
2460 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
2461 int free_pms);
2462 __owur EVP_PKEY *ssl_generate_pkey(SSL *s, EVP_PKEY *pm);
2463 __owur int ssl_gensecret(SSL *s, unsigned char *pms, size_t pmslen);
2464 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2465 int genmaster);
2466 __owur int ssl_decapsulate(SSL *s, EVP_PKEY *privkey,
2467 const unsigned char *ct, size_t ctlen,
2468 int gensecret);
2469 __owur int ssl_encapsulate(SSL *s, EVP_PKEY *pubkey,
2470 unsigned char **ctp, size_t *ctlenp,
2471 int gensecret);
2472 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2473 __owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen,
2474 void *key);
2475 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl);
2476 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl);
2477
2478 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2479 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2480 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2481 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2482 size_t *len);
2483 int ssl3_init_finished_mac(SSL *s);
2484 __owur int ssl3_setup_key_block(SSL *s);
2485 __owur int ssl3_change_cipher_state(SSL *s, int which);
2486 void ssl3_cleanup_key_block(SSL *s);
2487 __owur int ssl3_do_write(SSL *s, int type);
2488 int ssl3_send_alert(SSL *s, int level, int desc);
2489 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2490 unsigned char *p, size_t len,
2491 size_t *secret_size);
2492 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
2493 __owur int ssl3_num_ciphers(void);
2494 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2495 int ssl3_renegotiate(SSL *ssl);
2496 int ssl3_renegotiate_check(SSL *ssl, int initok);
2497 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
2498 OSSL_PARAM params[]);
2499 __owur int ssl3_dispatch_alert(SSL *s);
2500 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
2501 unsigned char *p);
2502 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
2503 void ssl3_free_digest_list(SSL *s);
2504 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
2505 CERT_PKEY *cpk);
2506 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
2507 STACK_OF(SSL_CIPHER) *clnt,
2508 STACK_OF(SSL_CIPHER) *srvr);
2509 __owur int ssl3_digest_cached_records(SSL *s, int keep);
2510 __owur int ssl3_new(SSL *s);
2511 void ssl3_free(SSL *s);
2512 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2513 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2514 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2515 __owur int ssl3_shutdown(SSL *s);
2516 int ssl3_clear(SSL *s);
2517 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2518 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2519 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2520 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2521
2522 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
2523 __owur long ssl3_default_timeout(void);
2524
2525 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2526 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2527 __owur int tls_setup_handshake(SSL *s);
2528 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2529 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2530 __owur int ssl3_handshake_write(SSL *s);
2531
2532 __owur int ssl_allow_compression(SSL *s);
2533
2534 __owur int ssl_version_supported(const SSL *s, int version,
2535 const SSL_METHOD **meth);
2536
2537 __owur int ssl_set_client_hello_version(SSL *s);
2538 __owur int ssl_check_version_downgrade(SSL *s);
2539 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2540 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
2541 DOWNGRADE *dgrd);
2542 __owur int ssl_choose_client_version(SSL *s, int version,
2543 RAW_EXTENSION *extensions);
2544 __owur int ssl_get_min_max_version(const SSL *s, int *min_version,
2545 int *max_version, int *real_max);
2546
2547 __owur long tls1_default_timeout(void);
2548 __owur int dtls1_do_write(SSL *s, int type);
2549 void dtls1_set_message_header(SSL *s,
2550 unsigned char mt,
2551 size_t len,
2552 size_t frag_off, size_t frag_len);
2553
2554 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2555 size_t *written);
2556
2557 __owur int dtls1_read_failed(SSL *s, int code);
2558 __owur int dtls1_buffer_message(SSL *s, int ccs);
2559 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
2560 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2561 int dtls1_retransmit_buffered_messages(SSL *s);
2562 void dtls1_clear_received_buffer(SSL *s);
2563 void dtls1_clear_sent_buffer(SSL *s);
2564 void dtls1_get_message_header(unsigned char *data,
2565 struct hm_header_st *msg_hdr);
2566 __owur long dtls1_default_timeout(void);
2567 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2568 __owur int dtls1_check_timeout_num(SSL *s);
2569 __owur int dtls1_handle_timeout(SSL *s);
2570 void dtls1_start_timer(SSL *s);
2571 void dtls1_stop_timer(SSL *s);
2572 __owur int dtls1_is_timer_expired(SSL *s);
2573 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2574 size_t cookie_len);
2575 __owur size_t dtls1_min_mtu(SSL *s);
2576 void dtls1_hm_fragment_free(hm_fragment *frag);
2577 __owur int dtls1_query_mtu(SSL *s);
2578
2579 __owur int tls1_new(SSL *s);
2580 void tls1_free(SSL *s);
2581 int tls1_clear(SSL *s);
2582
2583 __owur int dtls1_new(SSL *s);
2584 void dtls1_free(SSL *s);
2585 int dtls1_clear(SSL *s);
2586 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2587 __owur int dtls1_shutdown(SSL *s);
2588
2589 __owur int dtls1_dispatch_alert(SSL *s);
2590
2591 __owur int ssl_init_wbio_buffer(SSL *s);
2592 int ssl_free_wbio_buffer(SSL *s);
2593
2594 __owur int tls1_change_cipher_state(SSL *s, int which);
2595 __owur int tls1_setup_key_block(SSL *s);
2596 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
2597 unsigned char *p);
2598 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2599 unsigned char *p, size_t len,
2600 size_t *secret_size);
2601 __owur int tls13_setup_key_block(SSL *s);
2602 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
2603 unsigned char *p);
2604 __owur int tls13_change_cipher_state(SSL *s, int which);
2605 __owur int tls13_update_key(SSL *s, int send);
2606 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
2607 const unsigned char *secret,
2608 const unsigned char *label, size_t labellen,
2609 const unsigned char *data, size_t datalen,
2610 unsigned char *out, size_t outlen, int fatal);
2611 __owur int tls13_derive_key(SSL *s, const EVP_MD *md,
2612 const unsigned char *secret, unsigned char *key,
2613 size_t keylen);
2614 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
2615 const unsigned char *secret, unsigned char *iv,
2616 size_t ivlen);
2617 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
2618 const unsigned char *secret,
2619 unsigned char *fin, size_t finlen);
2620 int tls13_generate_secret(SSL *s, const EVP_MD *md,
2621 const unsigned char *prevsecret,
2622 const unsigned char *insecret,
2623 size_t insecretlen,
2624 unsigned char *outsecret);
2625 __owur int tls13_generate_handshake_secret(SSL *s,
2626 const unsigned char *insecret,
2627 size_t insecretlen);
2628 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
2629 unsigned char *prev, size_t prevlen,
2630 size_t *secret_size);
2631 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2632 const char *label, size_t llen,
2633 const unsigned char *p, size_t plen,
2634 int use_context);
2635 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2636 const char *label, size_t llen,
2637 const unsigned char *context,
2638 size_t contextlen, int use_context);
2639 __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out,
2640 size_t olen, const char *label,
2641 size_t llen,
2642 const unsigned char *context,
2643 size_t contextlen);
2644 __owur int tls1_alert_code(int code);
2645 __owur int tls13_alert_code(int code);
2646 __owur int ssl3_alert_code(int code);
2647
2648 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2649
2650 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2651
2652 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id);
2653 __owur int tls1_group_id2nid(uint16_t group_id, int include_unknown);
2654 __owur uint16_t tls1_nid2group_id(int nid);
2655 __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves);
2656 __owur uint16_t tls1_shared_group(SSL *s, int nmatch);
2657 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2658 int *curves, size_t ncurves);
2659 __owur int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen,
2660 const char *str);
2661 __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id);
2662 __owur int tls_valid_group(SSL *s, uint16_t group_id, int minversion,
2663 int maxversion, int isec, int *okfortls13);
2664 __owur EVP_PKEY *ssl_generate_param_group(SSL *s, uint16_t id);
2665 void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
2666 size_t *num_formats);
2667 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2668
2669 __owur int tls_group_allowed(SSL *s, uint16_t curve, int op);
2670 void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups,
2671 size_t *pgroupslen);
2672
2673 __owur int tls1_set_server_sigalgs(SSL *s);
2674
2675 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
2676 SSL_SESSION **ret);
2677 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick,
2678 size_t eticklen,
2679 const unsigned char *sess_id,
2680 size_t sesslen, SSL_SESSION **psess);
2681
2682 __owur int tls_use_ticket(SSL *s);
2683
2684 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2685
2686 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2687 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2688 int client);
2689 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2690 int client);
2691 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2692 int idx);
2693 void tls1_set_cert_validity(SSL *s);
2694
2695 # ifndef OPENSSL_NO_CT
2696 __owur int ssl_validate_ct(SSL *s);
2697 # endif
2698
2699 __owur EVP_PKEY *ssl_get_auto_dh(SSL *s);
2700
2701 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2702 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
2703 int vfy);
2704
2705 int tls_choose_sigalg(SSL *s, int fatalerrs);
2706
2707 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2708 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2709 __owur long ssl_get_algorithm2(SSL *s);
2710 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
2711 const uint16_t *psig, size_t psiglen);
2712 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2713 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert);
2714 __owur int tls1_process_sigalgs(SSL *s);
2715 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
2716 __owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu,
2717 const EVP_MD **pmd);
2718 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
2719 __owur int tls_check_sigalg_curve(const SSL *s, int curve);
2720 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
2721 __owur int ssl_set_client_disabled(SSL *s);
2722 __owur int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int echde);
2723
2724 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
2725 size_t *hashlen);
2726 __owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx);
2727 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2728 __owur const EVP_MD *ssl_prf_md(SSL *s);
2729
2730 /*
2731 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2732 * with |ssl|, if logging is enabled. It returns one on success and zero on
2733 * failure. The entry is identified by the first 8 bytes of
2734 * |encrypted_premaster|.
2735 */
2736 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
2737 const uint8_t *encrypted_premaster,
2738 size_t encrypted_premaster_len,
2739 const uint8_t *premaster,
2740 size_t premaster_len);
2741
2742 /*
2743 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2744 * logging is available. It returns one on success and zero on failure. It tags
2745 * the entry with |label|.
2746 */
2747 __owur int ssl_log_secret(SSL *ssl, const char *label,
2748 const uint8_t *secret, size_t secret_len);
2749
2750 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2751 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2752 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2753 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2754 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2755 #define CLIENT_APPLICATION_N_LABEL "CLIENT_TRAFFIC_SECRET_N"
2756 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2757 #define SERVER_APPLICATION_N_LABEL "SERVER_TRAFFIC_SECRET_N"
2758 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2759 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2760
2761 # ifndef OPENSSL_NO_KTLS
2762 /* ktls.c */
2763 int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
2764 const EVP_CIPHER_CTX *dd);
2765 int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
2766 void *rl_sequence, ktls_crypto_info_t *crypto_info,
2767 unsigned char **rec_seq, unsigned char *iv,
2768 unsigned char *key, unsigned char *mac_key,
2769 size_t mac_secret_size);
2770 # endif
2771
2772 /* s3_cbc.c */
2773 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2774 __owur int ssl3_cbc_digest_record(const EVP_MD *md,
2775 unsigned char *md_out,
2776 size_t *md_out_size,
2777 const unsigned char *header,
2778 const unsigned char *data,
2779 size_t data_size,
2780 size_t data_plus_mac_plus_padding_size,
2781 const unsigned char *mac_secret,
2782 size_t mac_secret_length, char is_sslv3);
2783
2784 __owur int srp_generate_server_master_secret(SSL *s);
2785 __owur int srp_generate_client_master_secret(SSL *s);
2786 __owur int srp_verify_server_param(SSL *s);
2787
2788 /* statem/statem_srvr.c */
2789
2790 __owur int send_certificate_request(SSL *s);
2791
2792 /* statem/extensions_cust.c */
2793
2794 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2795 ENDPOINT role, unsigned int ext_type,
2796 size_t *idx);
2797
2798 void custom_ext_init(custom_ext_methods *meths);
2799
2800 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
2801 const unsigned char *ext_data, size_t ext_size,
2802 X509 *x, size_t chainidx);
2803 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
2804 size_t chainidx, int maxversion);
2805
2806 __owur int custom_exts_copy(custom_ext_methods *dst,
2807 const custom_ext_methods *src);
2808 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2809 const custom_ext_methods *src);
2810 void custom_exts_free(custom_ext_methods *exts);
2811
2812 void ssl_comp_free_compression_methods_int(void);
2813
2814 /* ssl_mcnf.c */
2815 void ssl_ctx_system_config(SSL_CTX *ctx);
2816
2817 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
2818 int nid,
2819 const char *properties);
2820 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher);
2821 void ssl_evp_cipher_free(const EVP_CIPHER *cipher);
2822 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
2823 int nid,
2824 const char *properties);
2825 int ssl_evp_md_up_ref(const EVP_MD *md);
2826 void ssl_evp_md_free(const EVP_MD *md);
2827
2828 int tls_provider_set_tls_params(SSL *s, EVP_CIPHER_CTX *ctx,
2829 const EVP_CIPHER *ciph,
2830 const EVP_MD *md);
2831
2832 void tls_engine_finish(ENGINE *e);
2833 const EVP_CIPHER *tls_get_cipher_from_engine(int nid);
2834 const EVP_MD *tls_get_digest_from_engine(int nid);
2835 int tls_engine_load_ssl_client_cert(SSL *s, X509 **px509, EVP_PKEY **ppkey);
2836 int ssl_hmac_old_new(SSL_HMAC *ret);
2837 void ssl_hmac_old_free(SSL_HMAC *ctx);
2838 int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
2839 int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
2840 int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len);
2841 size_t ssl_hmac_old_size(const SSL_HMAC *ctx);
2842
2843 int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx);
2844 int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx);
2845 int ssl_srp_ctx_free_intern(SSL *s);
2846 int ssl_srp_ctx_init_intern(SSL *s);
2847
2848 int ssl_srp_calc_a_param_intern(SSL *s);
2849 int ssl_srp_server_param_with_username_intern(SSL *s, int *ad);
2850
2851 void ssl_session_calculate_timeout(SSL_SESSION* ss);
2852
2853 # else /* OPENSSL_UNIT_TEST */
2854
2855 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2856 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2857
2858 # endif
2859
2860 /* Some helper routines to support TSAN operations safely */
ssl_tsan_lock(const SSL_CTX * ctx)2861 static ossl_unused ossl_inline int ssl_tsan_lock(const SSL_CTX *ctx)
2862 {
2863 #ifdef TSAN_REQUIRES_LOCKING
2864 if (!CRYPTO_THREAD_write_lock(ctx->tsan_lock))
2865 return 0;
2866 #endif
2867 return 1;
2868 }
2869
ssl_tsan_unlock(const SSL_CTX * ctx)2870 static ossl_unused ossl_inline void ssl_tsan_unlock(const SSL_CTX *ctx)
2871 {
2872 #ifdef TSAN_REQUIRES_LOCKING
2873 CRYPTO_THREAD_unlock(ctx->tsan_lock);
2874 #endif
2875 }
2876
ssl_tsan_counter(const SSL_CTX * ctx,TSAN_QUALIFIER int * stat)2877 static ossl_unused ossl_inline void ssl_tsan_counter(const SSL_CTX *ctx,
2878 TSAN_QUALIFIER int *stat)
2879 {
2880 if (ssl_tsan_lock(ctx)) {
2881 tsan_counter(stat);
2882 ssl_tsan_unlock(ctx);
2883 }
2884 }
2885
2886 #endif
2887