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1 | /* | |
2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved | |
4 | * Copyright 2005 Nokia. All rights reserved. | |
5 | * | |
6 | * Licensed under the OpenSSL license (the "License"). You may not use | |
7 | * this file except in compliance with the License. You can obtain a copy | |
8 | * in the file LICENSE in the source distribution or at | |
9 | * https://www.openssl.org/source/license.html | |
10 | */ | |
11 | ||
12 | #ifndef HEADER_SSL_LOCL_H | |
13 | # define HEADER_SSL_LOCL_H | |
14 | ||
15 | # include "e_os.h" /* struct timeval for DTLS */ | |
16 | # include <stdlib.h> | |
17 | # include <time.h> | |
18 | # include <string.h> | |
19 | # include <errno.h> | |
20 | ||
21 | # include <openssl/buffer.h> | |
22 | # include <openssl/comp.h> | |
23 | # include <openssl/bio.h> | |
24 | # include <openssl/rsa.h> | |
25 | # include <openssl/dsa.h> | |
26 | # include <openssl/err.h> | |
27 | # include <openssl/ssl.h> | |
28 | # include <openssl/async.h> | |
29 | # include <openssl/symhacks.h> | |
30 | # include <openssl/ct.h> | |
31 | # include "record/record.h" | |
32 | # include "statem/statem.h" | |
33 | # include "packet_locl.h" | |
34 | # include "internal/dane.h" | |
35 | # include "internal/refcount.h" | |
36 | # include "internal/tsan_assist.h" | |
37 | ||
38 | # ifdef OPENSSL_BUILD_SHLIBSSL | |
39 | # undef OPENSSL_EXTERN | |
40 | # define OPENSSL_EXTERN OPENSSL_EXPORT | |
41 | # endif | |
42 | ||
43 | # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ | |
44 | l|=(((unsigned long)(*((c)++)))<< 8), \ | |
45 | l|=(((unsigned long)(*((c)++)))<<16), \ | |
46 | l|=(((unsigned long)(*((c)++)))<<24)) | |
47 | ||
48 | /* NOTE - c is not incremented as per c2l */ | |
49 | # define c2ln(c,l1,l2,n) { \ | |
50 | c+=n; \ | |
51 | l1=l2=0; \ | |
52 | switch (n) { \ | |
53 | case 8: l2 =((unsigned long)(*(--(c))))<<24; \ | |
54 | case 7: l2|=((unsigned long)(*(--(c))))<<16; \ | |
55 | case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ | |
56 | case 5: l2|=((unsigned long)(*(--(c)))); \ | |
57 | case 4: l1 =((unsigned long)(*(--(c))))<<24; \ | |
58 | case 3: l1|=((unsigned long)(*(--(c))))<<16; \ | |
59 | case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ | |
60 | case 1: l1|=((unsigned long)(*(--(c)))); \ | |
61 | } \ | |
62 | } | |
63 | ||
64 | # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
65 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
66 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
67 | *((c)++)=(unsigned char)(((l)>>24)&0xff)) | |
68 | ||
69 | # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ | |
70 | l|=((unsigned long)(*((c)++)))<<16, \ | |
71 | l|=((unsigned long)(*((c)++)))<< 8, \ | |
72 | l|=((unsigned long)(*((c)++)))) | |
73 | ||
74 | # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \ | |
75 | l|=((uint64_t)(*((c)++)))<<48, \ | |
76 | l|=((uint64_t)(*((c)++)))<<40, \ | |
77 | l|=((uint64_t)(*((c)++)))<<32, \ | |
78 | l|=((uint64_t)(*((c)++)))<<24, \ | |
79 | l|=((uint64_t)(*((c)++)))<<16, \ | |
80 | l|=((uint64_t)(*((c)++)))<< 8, \ | |
81 | l|=((uint64_t)(*((c)++)))) | |
82 | ||
83 | ||
84 | # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ | |
85 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
86 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
87 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
88 | ||
89 | # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \ | |
90 | *((c)++)=(unsigned char)(((l)>>32)&0xff), \ | |
91 | *((c)++)=(unsigned char)(((l)>>24)&0xff), \ | |
92 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
93 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
94 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
95 | ||
96 | # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ | |
97 | *((c)++)=(unsigned char)(((l)>>48)&0xff), \ | |
98 | *((c)++)=(unsigned char)(((l)>>40)&0xff), \ | |
99 | *((c)++)=(unsigned char)(((l)>>32)&0xff), \ | |
100 | *((c)++)=(unsigned char)(((l)>>24)&0xff), \ | |
101 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
102 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
103 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
104 | ||
105 | /* NOTE - c is not incremented as per l2c */ | |
106 | # define l2cn(l1,l2,c,n) { \ | |
107 | c+=n; \ | |
108 | switch (n) { \ | |
109 | case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ | |
110 | case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ | |
111 | case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ | |
112 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ | |
113 | case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ | |
114 | case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ | |
115 | case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ | |
116 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ | |
117 | } \ | |
118 | } | |
119 | ||
120 | # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \ | |
121 | (((unsigned int)((c)[1])) )),(c)+=2) | |
122 | # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \ | |
123 | (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2) | |
124 | ||
125 | # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \ | |
126 | (((unsigned long)((c)[1]))<< 8)| \ | |
127 | (((unsigned long)((c)[2])) )),(c)+=3) | |
128 | ||
129 | # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \ | |
130 | (c)[1]=(unsigned char)(((l)>> 8)&0xff), \ | |
131 | (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3) | |
132 | ||
133 | /* | |
134 | * DTLS version numbers are strange because they're inverted. Except for | |
135 | * DTLS1_BAD_VER, which should be considered "lower" than the rest. | |
136 | */ | |
137 | # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1)) | |
138 | # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2)) | |
139 | # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2)) | |
140 | # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2)) | |
141 | # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2)) | |
142 | ||
143 | ||
144 | /* | |
145 | * Define the Bitmasks for SSL_CIPHER.algorithms. | |
146 | * This bits are used packed as dense as possible. If new methods/ciphers | |
147 | * etc will be added, the bits a likely to change, so this information | |
148 | * is for internal library use only, even though SSL_CIPHER.algorithms | |
149 | * can be publicly accessed. | |
150 | * Use the according functions for cipher management instead. | |
151 | * | |
152 | * The bit mask handling in the selection and sorting scheme in | |
153 | * ssl_create_cipher_list() has only limited capabilities, reflecting | |
154 | * that the different entities within are mutually exclusive: | |
155 | * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. | |
156 | */ | |
157 | ||
158 | /* Bits for algorithm_mkey (key exchange algorithm) */ | |
159 | /* RSA key exchange */ | |
160 | # define SSL_kRSA 0x00000001U | |
161 | /* tmp DH key no DH cert */ | |
162 | # define SSL_kDHE 0x00000002U | |
163 | /* synonym */ | |
164 | # define SSL_kEDH SSL_kDHE | |
165 | /* ephemeral ECDH */ | |
166 | # define SSL_kECDHE 0x00000004U | |
167 | /* synonym */ | |
168 | # define SSL_kEECDH SSL_kECDHE | |
169 | /* PSK */ | |
170 | # define SSL_kPSK 0x00000008U | |
171 | /* GOST key exchange */ | |
172 | # define SSL_kGOST 0x00000010U | |
173 | /* SRP */ | |
174 | # define SSL_kSRP 0x00000020U | |
175 | ||
176 | # define SSL_kRSAPSK 0x00000040U | |
177 | # define SSL_kECDHEPSK 0x00000080U | |
178 | # define SSL_kDHEPSK 0x00000100U | |
179 | ||
180 | /* all PSK */ | |
181 | ||
182 | # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK) | |
183 | ||
184 | /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */ | |
185 | # define SSL_kANY 0x00000000U | |
186 | ||
187 | /* Bits for algorithm_auth (server authentication) */ | |
188 | /* RSA auth */ | |
189 | # define SSL_aRSA 0x00000001U | |
190 | /* DSS auth */ | |
191 | # define SSL_aDSS 0x00000002U | |
192 | /* no auth (i.e. use ADH or AECDH) */ | |
193 | # define SSL_aNULL 0x00000004U | |
194 | /* ECDSA auth*/ | |
195 | # define SSL_aECDSA 0x00000008U | |
196 | /* PSK auth */ | |
197 | # define SSL_aPSK 0x00000010U | |
198 | /* GOST R 34.10-2001 signature auth */ | |
199 | # define SSL_aGOST01 0x00000020U | |
200 | /* SRP auth */ | |
201 | # define SSL_aSRP 0x00000040U | |
202 | /* GOST R 34.10-2012 signature auth */ | |
203 | # define SSL_aGOST12 0x00000080U | |
204 | /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */ | |
205 | # define SSL_aANY 0x00000000U | |
206 | /* All bits requiring a certificate */ | |
207 | #define SSL_aCERT \ | |
208 | (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12) | |
209 | ||
210 | /* Bits for algorithm_enc (symmetric encryption) */ | |
211 | # define SSL_DES 0x00000001U | |
212 | # define SSL_3DES 0x00000002U | |
213 | # define SSL_RC4 0x00000004U | |
214 | # define SSL_RC2 0x00000008U | |
215 | # define SSL_IDEA 0x00000010U | |
216 | # define SSL_eNULL 0x00000020U | |
217 | # define SSL_AES128 0x00000040U | |
218 | # define SSL_AES256 0x00000080U | |
219 | # define SSL_CAMELLIA128 0x00000100U | |
220 | # define SSL_CAMELLIA256 0x00000200U | |
221 | # define SSL_eGOST2814789CNT 0x00000400U | |
222 | # define SSL_SEED 0x00000800U | |
223 | # define SSL_AES128GCM 0x00001000U | |
224 | # define SSL_AES256GCM 0x00002000U | |
225 | # define SSL_AES128CCM 0x00004000U | |
226 | # define SSL_AES256CCM 0x00008000U | |
227 | # define SSL_AES128CCM8 0x00010000U | |
228 | # define SSL_AES256CCM8 0x00020000U | |
229 | # define SSL_eGOST2814789CNT12 0x00040000U | |
230 | # define SSL_CHACHA20POLY1305 0x00080000U | |
231 | # define SSL_ARIA128GCM 0x00100000U | |
232 | # define SSL_ARIA256GCM 0x00200000U | |
233 | ||
234 | # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM) | |
235 | # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8) | |
236 | # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM) | |
237 | # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) | |
238 | # define SSL_CHACHA20 (SSL_CHACHA20POLY1305) | |
239 | # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM) | |
240 | # define SSL_ARIA (SSL_ARIAGCM) | |
241 | ||
242 | /* Bits for algorithm_mac (symmetric authentication) */ | |
243 | ||
244 | # define SSL_MD5 0x00000001U | |
245 | # define SSL_SHA1 0x00000002U | |
246 | # define SSL_GOST94 0x00000004U | |
247 | # define SSL_GOST89MAC 0x00000008U | |
248 | # define SSL_SHA256 0x00000010U | |
249 | # define SSL_SHA384 0x00000020U | |
250 | /* Not a real MAC, just an indication it is part of cipher */ | |
251 | # define SSL_AEAD 0x00000040U | |
252 | # define SSL_GOST12_256 0x00000080U | |
253 | # define SSL_GOST89MAC12 0x00000100U | |
254 | # define SSL_GOST12_512 0x00000200U | |
255 | ||
256 | /* | |
257 | * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make | |
258 | * sure to update this constant too | |
259 | */ | |
260 | ||
261 | # define SSL_MD_MD5_IDX 0 | |
262 | # define SSL_MD_SHA1_IDX 1 | |
263 | # define SSL_MD_GOST94_IDX 2 | |
264 | # define SSL_MD_GOST89MAC_IDX 3 | |
265 | # define SSL_MD_SHA256_IDX 4 | |
266 | # define SSL_MD_SHA384_IDX 5 | |
267 | # define SSL_MD_GOST12_256_IDX 6 | |
268 | # define SSL_MD_GOST89MAC12_IDX 7 | |
269 | # define SSL_MD_GOST12_512_IDX 8 | |
270 | # define SSL_MD_MD5_SHA1_IDX 9 | |
271 | # define SSL_MD_SHA224_IDX 10 | |
272 | # define SSL_MD_SHA512_IDX 11 | |
273 | # define SSL_MAX_DIGEST 12 | |
274 | ||
275 | /* Bits for algorithm2 (handshake digests and other extra flags) */ | |
276 | ||
277 | /* Bits 0-7 are handshake MAC */ | |
278 | # define SSL_HANDSHAKE_MAC_MASK 0xFF | |
279 | # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX | |
280 | # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX | |
281 | # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX | |
282 | # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX | |
283 | # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX | |
284 | # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX | |
285 | # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1 | |
286 | ||
287 | /* Bits 8-15 bits are PRF */ | |
288 | # define TLS1_PRF_DGST_SHIFT 8 | |
289 | # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) | |
290 | # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT) | |
291 | # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT) | |
292 | # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT) | |
293 | # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT) | |
294 | # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT) | |
295 | # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) | |
296 | ||
297 | /* | |
298 | * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also | |
299 | * goes into algorithm2) | |
300 | */ | |
301 | # define TLS1_STREAM_MAC 0x10000 | |
302 | ||
303 | # define SSL_STRONG_MASK 0x0000001FU | |
304 | # define SSL_DEFAULT_MASK 0X00000020U | |
305 | ||
306 | # define SSL_STRONG_NONE 0x00000001U | |
307 | # define SSL_LOW 0x00000002U | |
308 | # define SSL_MEDIUM 0x00000004U | |
309 | # define SSL_HIGH 0x00000008U | |
310 | # define SSL_FIPS 0x00000010U | |
311 | # define SSL_NOT_DEFAULT 0x00000020U | |
312 | ||
313 | /* we have used 0000003f - 26 bits left to go */ | |
314 | ||
315 | /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */ | |
316 | # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000 | |
317 | ||
318 | /* Check if an SSL structure is using DTLS */ | |
319 | # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) | |
320 | ||
321 | /* Check if we are using TLSv1.3 */ | |
322 | # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \ | |
323 | && (s)->method->version >= TLS1_3_VERSION \ | |
324 | && (s)->method->version != TLS_ANY_VERSION) | |
325 | ||
326 | # define SSL_TREAT_AS_TLS13(s) \ | |
327 | (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \ | |
328 | || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \ | |
329 | || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ | |
330 | || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \ | |
331 | || (s)->hello_retry_request == SSL_HRR_PENDING) | |
332 | ||
333 | # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \ | |
334 | || (s)->s3->tmp.peer_finish_md_len == 0) | |
335 | ||
336 | /* See if we need explicit IV */ | |
337 | # define SSL_USE_EXPLICIT_IV(s) \ | |
338 | (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) | |
339 | /* | |
340 | * See if we use signature algorithms extension and signature algorithm | |
341 | * before signatures. | |
342 | */ | |
343 | # define SSL_USE_SIGALGS(s) \ | |
344 | (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) | |
345 | /* | |
346 | * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may | |
347 | * apply to others in future. | |
348 | */ | |
349 | # define SSL_USE_TLS1_2_CIPHERS(s) \ | |
350 | (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) | |
351 | /* | |
352 | * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method | |
353 | * flags because it may not be set to correct version yet. | |
354 | */ | |
355 | # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ | |
356 | ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \ | |
357 | (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION))) | |
358 | /* | |
359 | * Determine if a client should send signature algorithms extension: | |
360 | * as with TLS1.2 cipher we can't rely on method flags. | |
361 | */ | |
362 | # define SSL_CLIENT_USE_SIGALGS(s) \ | |
363 | SSL_CLIENT_USE_TLS1_2_CIPHERS(s) | |
364 | ||
365 | # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \ | |
366 | (((value) >= TLSEXT_max_fragment_length_512) && \ | |
367 | ((value) <= TLSEXT_max_fragment_length_4096)) | |
368 | # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \ | |
369 | IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode) | |
370 | # define GET_MAX_FRAGMENT_LENGTH(session) \ | |
371 | (512U << (session->ext.max_fragment_len_mode - 1)) | |
372 | ||
373 | # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ) | |
374 | # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE) | |
375 | ||
376 | /* Mostly for SSLv3 */ | |
377 | # define SSL_PKEY_RSA 0 | |
378 | # define SSL_PKEY_RSA_PSS_SIGN 1 | |
379 | # define SSL_PKEY_DSA_SIGN 2 | |
380 | # define SSL_PKEY_ECC 3 | |
381 | # define SSL_PKEY_GOST01 4 | |
382 | # define SSL_PKEY_GOST12_256 5 | |
383 | # define SSL_PKEY_GOST12_512 6 | |
384 | # define SSL_PKEY_ED25519 7 | |
385 | # define SSL_PKEY_ED448 8 | |
386 | # define SSL_PKEY_NUM 9 | |
387 | ||
388 | /*- | |
389 | * SSL_kRSA <- RSA_ENC | |
390 | * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) | |
391 | * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN | |
392 | * SSL_aRSA <- RSA_ENC | RSA_SIGN | |
393 | * SSL_aDSS <- DSA_SIGN | |
394 | */ | |
395 | ||
396 | /*- | |
397 | #define CERT_INVALID 0 | |
398 | #define CERT_PUBLIC_KEY 1 | |
399 | #define CERT_PRIVATE_KEY 2 | |
400 | */ | |
401 | ||
402 | /* Post-Handshake Authentication state */ | |
403 | typedef enum { | |
404 | SSL_PHA_NONE = 0, | |
405 | SSL_PHA_EXT_SENT, /* client-side only: extension sent */ | |
406 | SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */ | |
407 | SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */ | |
408 | SSL_PHA_REQUESTED /* request received by client, or sent by server */ | |
409 | } SSL_PHA_STATE; | |
410 | ||
411 | /* CipherSuite length. SSLv3 and all TLS versions. */ | |
412 | # define TLS_CIPHER_LEN 2 | |
413 | /* used to hold info on the particular ciphers used */ | |
414 | struct ssl_cipher_st { | |
415 | uint32_t valid; | |
416 | const char *name; /* text name */ | |
417 | const char *stdname; /* RFC name */ | |
418 | uint32_t id; /* id, 4 bytes, first is version */ | |
419 | /* | |
420 | * changed in 1.0.0: these four used to be portions of a single value | |
421 | * 'algorithms' | |
422 | */ | |
423 | uint32_t algorithm_mkey; /* key exchange algorithm */ | |
424 | uint32_t algorithm_auth; /* server authentication */ | |
425 | uint32_t algorithm_enc; /* symmetric encryption */ | |
426 | uint32_t algorithm_mac; /* symmetric authentication */ | |
427 | int min_tls; /* minimum SSL/TLS protocol version */ | |
428 | int max_tls; /* maximum SSL/TLS protocol version */ | |
429 | int min_dtls; /* minimum DTLS protocol version */ | |
430 | int max_dtls; /* maximum DTLS protocol version */ | |
431 | uint32_t algo_strength; /* strength and export flags */ | |
432 | uint32_t algorithm2; /* Extra flags */ | |
433 | int32_t strength_bits; /* Number of bits really used */ | |
434 | uint32_t alg_bits; /* Number of bits for algorithm */ | |
435 | }; | |
436 | ||
437 | /* Used to hold SSL/TLS functions */ | |
438 | struct ssl_method_st { | |
439 | int version; | |
440 | unsigned flags; | |
441 | unsigned long mask; | |
442 | int (*ssl_new) (SSL *s); | |
443 | int (*ssl_clear) (SSL *s); | |
444 | void (*ssl_free) (SSL *s); | |
445 | int (*ssl_accept) (SSL *s); | |
446 | int (*ssl_connect) (SSL *s); | |
447 | int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes); | |
448 | int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes); | |
449 | int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written); | |
450 | int (*ssl_shutdown) (SSL *s); | |
451 | int (*ssl_renegotiate) (SSL *s); | |
452 | int (*ssl_renegotiate_check) (SSL *s, int); | |
453 | int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type, | |
454 | unsigned char *buf, size_t len, int peek, | |
455 | size_t *readbytes); | |
456 | int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len, | |
457 | size_t *written); | |
458 | int (*ssl_dispatch_alert) (SSL *s); | |
459 | long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg); | |
460 | long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg); | |
461 | const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr); | |
462 | int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt, | |
463 | size_t *len); | |
464 | size_t (*ssl_pending) (const SSL *s); | |
465 | int (*num_ciphers) (void); | |
466 | const SSL_CIPHER *(*get_cipher) (unsigned ncipher); | |
467 | long (*get_timeout) (void); | |
468 | const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ | |
469 | int (*ssl_version) (void); | |
470 | long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void)); | |
471 | long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void)); | |
472 | }; | |
473 | ||
474 | /* | |
475 | * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for | |
476 | * consistency, even in the event of OPENSSL_NO_PSK being defined. | |
477 | */ | |
478 | # define TLS13_MAX_RESUMPTION_PSK_LENGTH 256 | |
479 | ||
480 | /*- | |
481 | * Lets make this into an ASN.1 type structure as follows | |
482 | * SSL_SESSION_ID ::= SEQUENCE { | |
483 | * version INTEGER, -- structure version number | |
484 | * SSLversion INTEGER, -- SSL version number | |
485 | * Cipher OCTET STRING, -- the 3 byte cipher ID | |
486 | * Session_ID OCTET STRING, -- the Session ID | |
487 | * Master_key OCTET STRING, -- the master key | |
488 | * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument | |
489 | * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time | |
490 | * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds | |
491 | * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate | |
492 | * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context | |
493 | * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' | |
494 | * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension | |
495 | * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint | |
496 | * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity | |
497 | * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket | |
498 | * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) | |
499 | * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method | |
500 | * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username | |
501 | * flags [ 13 ] EXPLICIT INTEGER -- optional flags | |
502 | * } | |
503 | * Look in ssl/ssl_asn1.c for more details | |
504 | * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). | |
505 | */ | |
506 | struct ssl_session_st { | |
507 | int ssl_version; /* what ssl version session info is being kept | |
508 | * in here? */ | |
509 | size_t master_key_length; | |
510 | ||
511 | /* TLSv1.3 early_secret used for external PSKs */ | |
512 | unsigned char early_secret[EVP_MAX_MD_SIZE]; | |
513 | /* | |
514 | * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption | |
515 | * PSK | |
516 | */ | |
517 | unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH]; | |
518 | /* session_id - valid? */ | |
519 | size_t session_id_length; | |
520 | unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; | |
521 | /* | |
522 | * this is used to determine whether the session is being reused in the | |
523 | * appropriate context. It is up to the application to set this, via | |
524 | * SSL_new | |
525 | */ | |
526 | size_t sid_ctx_length; | |
527 | unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; | |
528 | # ifndef OPENSSL_NO_PSK | |
529 | char *psk_identity_hint; | |
530 | char *psk_identity; | |
531 | # endif | |
532 | /* | |
533 | * Used to indicate that session resumption is not allowed. Applications | |
534 | * can also set this bit for a new session via not_resumable_session_cb | |
535 | * to disable session caching and tickets. | |
536 | */ | |
537 | int not_resumable; | |
538 | /* This is the cert and type for the other end. */ | |
539 | X509 *peer; | |
540 | int peer_type; | |
541 | /* Certificate chain peer sent. */ | |
542 | STACK_OF(X509) *peer_chain; | |
543 | /* | |
544 | * when app_verify_callback accepts a session where the peer's | |
545 | * certificate is not ok, we must remember the error for session reuse: | |
546 | */ | |
547 | long verify_result; /* only for servers */ | |
548 | CRYPTO_REF_COUNT references; | |
549 | long timeout; | |
550 | long time; | |
551 | unsigned int compress_meth; /* Need to lookup the method */ | |
552 | const SSL_CIPHER *cipher; | |
553 | unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to | |
554 | * load the 'cipher' structure */ | |
555 | STACK_OF(SSL_CIPHER) *ciphers; /* ciphers offered by the client */ | |
556 | CRYPTO_EX_DATA ex_data; /* application specific data */ | |
557 | /* | |
558 | * These are used to make removal of session-ids more efficient and to | |
559 | * implement a maximum cache size. | |
560 | */ | |
561 | struct ssl_session_st *prev, *next; | |
562 | ||
563 | struct { | |
564 | char *hostname; | |
565 | # ifndef OPENSSL_NO_EC | |
566 | size_t ecpointformats_len; | |
567 | unsigned char *ecpointformats; /* peer's list */ | |
568 | # endif /* OPENSSL_NO_EC */ | |
569 | size_t supportedgroups_len; | |
570 | uint16_t *supportedgroups; /* peer's list */ | |
571 | /* RFC4507 info */ | |
572 | unsigned char *tick; /* Session ticket */ | |
573 | size_t ticklen; /* Session ticket length */ | |
574 | /* Session lifetime hint in seconds */ | |
575 | unsigned long tick_lifetime_hint; | |
576 | uint32_t tick_age_add; | |
577 | int tick_identity; | |
578 | /* Max number of bytes that can be sent as early data */ | |
579 | uint32_t max_early_data; | |
580 | /* The ALPN protocol selected for this session */ | |
581 | unsigned char *alpn_selected; | |
582 | size_t alpn_selected_len; | |
583 | /* | |
584 | * Maximum Fragment Length as per RFC 4366. | |
585 | * If this value does not contain RFC 4366 allowed values (1-4) then | |
586 | * either the Maximum Fragment Length Negotiation failed or was not | |
587 | * performed at all. | |
588 | */ | |
589 | uint8_t max_fragment_len_mode; | |
590 | } ext; | |
591 | # ifndef OPENSSL_NO_SRP | |
592 | char *srp_username; | |
593 | # endif | |
594 | unsigned char *ticket_appdata; | |
595 | size_t ticket_appdata_len; | |
596 | uint32_t flags; | |
597 | CRYPTO_RWLOCK *lock; | |
598 | }; | |
599 | ||
600 | /* Extended master secret support */ | |
601 | # define SSL_SESS_FLAG_EXTMS 0x1 | |
602 | ||
603 | # ifndef OPENSSL_NO_SRP | |
604 | ||
605 | typedef struct srp_ctx_st { | |
606 | /* param for all the callbacks */ | |
607 | void *SRP_cb_arg; | |
608 | /* set client Hello login callback */ | |
609 | int (*TLS_ext_srp_username_callback) (SSL *, int *, void *); | |
610 | /* set SRP N/g param callback for verification */ | |
611 | int (*SRP_verify_param_callback) (SSL *, void *); | |
612 | /* set SRP client passwd callback */ | |
613 | char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *); | |
614 | char *login; | |
615 | BIGNUM *N, *g, *s, *B, *A; | |
616 | BIGNUM *a, *b, *v; | |
617 | char *info; | |
618 | int strength; | |
619 | unsigned long srp_Mask; | |
620 | } SRP_CTX; | |
621 | ||
622 | # endif | |
623 | ||
624 | typedef enum { | |
625 | SSL_EARLY_DATA_NONE = 0, | |
626 | SSL_EARLY_DATA_CONNECT_RETRY, | |
627 | SSL_EARLY_DATA_CONNECTING, | |
628 | SSL_EARLY_DATA_WRITE_RETRY, | |
629 | SSL_EARLY_DATA_WRITING, | |
630 | SSL_EARLY_DATA_WRITE_FLUSH, | |
631 | SSL_EARLY_DATA_UNAUTH_WRITING, | |
632 | SSL_EARLY_DATA_FINISHED_WRITING, | |
633 | SSL_EARLY_DATA_ACCEPT_RETRY, | |
634 | SSL_EARLY_DATA_ACCEPTING, | |
635 | SSL_EARLY_DATA_READ_RETRY, | |
636 | SSL_EARLY_DATA_READING, | |
637 | SSL_EARLY_DATA_FINISHED_READING | |
638 | } SSL_EARLY_DATA_STATE; | |
639 | ||
640 | /* | |
641 | * We check that the amount of unreadable early data doesn't exceed | |
642 | * max_early_data. max_early_data is given in plaintext bytes. However if it is | |
643 | * unreadable then we only know the number of ciphertext bytes. We also don't | |
644 | * know how much the overhead should be because it depends on the ciphersuite. | |
645 | * We make a small allowance. We assume 5 records of actual data plus the end | |
646 | * of early data alert record. Each record has a tag and a content type byte. | |
647 | * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the | |
648 | * content of the alert record either which is 2 bytes. | |
649 | */ | |
650 | # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2) | |
651 | ||
652 | /* | |
653 | * The allowance we have between the client's calculated ticket age and our own. | |
654 | * We allow for 10 seconds (units are in ms). If a ticket is presented and the | |
655 | * client's age calculation is different by more than this than our own then we | |
656 | * do not allow that ticket for early_data. | |
657 | */ | |
658 | # define TICKET_AGE_ALLOWANCE (10 * 1000) | |
659 | ||
660 | #define MAX_COMPRESSIONS_SIZE 255 | |
661 | ||
662 | struct ssl_comp_st { | |
663 | int id; | |
664 | const char *name; | |
665 | COMP_METHOD *method; | |
666 | }; | |
667 | ||
668 | typedef struct raw_extension_st { | |
669 | /* Raw packet data for the extension */ | |
670 | PACKET data; | |
671 | /* Set to 1 if the extension is present or 0 otherwise */ | |
672 | int present; | |
673 | /* Set to 1 if we have already parsed the extension or 0 otherwise */ | |
674 | int parsed; | |
675 | /* The type of this extension, i.e. a TLSEXT_TYPE_* value */ | |
676 | unsigned int type; | |
677 | /* Track what order extensions are received in (0-based). */ | |
678 | size_t received_order; | |
679 | } RAW_EXTENSION; | |
680 | ||
681 | typedef struct { | |
682 | unsigned int isv2; | |
683 | unsigned int legacy_version; | |
684 | unsigned char random[SSL3_RANDOM_SIZE]; | |
685 | size_t session_id_len; | |
686 | unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; | |
687 | size_t dtls_cookie_len; | |
688 | unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH]; | |
689 | PACKET ciphersuites; | |
690 | size_t compressions_len; | |
691 | unsigned char compressions[MAX_COMPRESSIONS_SIZE]; | |
692 | PACKET extensions; | |
693 | size_t pre_proc_exts_len; | |
694 | RAW_EXTENSION *pre_proc_exts; | |
695 | } CLIENTHELLO_MSG; | |
696 | ||
697 | /* | |
698 | * Extension index values NOTE: Any updates to these defines should be mirrored | |
699 | * with equivalent updates to ext_defs in extensions.c | |
700 | */ | |
701 | typedef enum tlsext_index_en { | |
702 | TLSEXT_IDX_renegotiate, | |
703 | TLSEXT_IDX_server_name, | |
704 | TLSEXT_IDX_max_fragment_length, | |
705 | TLSEXT_IDX_srp, | |
706 | TLSEXT_IDX_ec_point_formats, | |
707 | TLSEXT_IDX_supported_groups, | |
708 | TLSEXT_IDX_session_ticket, | |
709 | TLSEXT_IDX_status_request, | |
710 | TLSEXT_IDX_next_proto_neg, | |
711 | TLSEXT_IDX_application_layer_protocol_negotiation, | |
712 | TLSEXT_IDX_use_srtp, | |
713 | TLSEXT_IDX_encrypt_then_mac, | |
714 | TLSEXT_IDX_signed_certificate_timestamp, | |
715 | TLSEXT_IDX_extended_master_secret, | |
716 | TLSEXT_IDX_signature_algorithms_cert, | |
717 | TLSEXT_IDX_post_handshake_auth, | |
718 | TLSEXT_IDX_signature_algorithms, | |
719 | TLSEXT_IDX_supported_versions, | |
720 | TLSEXT_IDX_psk_kex_modes, | |
721 | TLSEXT_IDX_key_share, | |
722 | TLSEXT_IDX_cookie, | |
723 | TLSEXT_IDX_cryptopro_bug, | |
724 | TLSEXT_IDX_early_data, | |
725 | TLSEXT_IDX_certificate_authorities, | |
726 | TLSEXT_IDX_padding, | |
727 | TLSEXT_IDX_psk, | |
728 | /* Dummy index - must always be the last entry */ | |
729 | TLSEXT_IDX_num_builtins | |
730 | } TLSEXT_INDEX; | |
731 | ||
732 | DEFINE_LHASH_OF(SSL_SESSION); | |
733 | /* Needed in ssl_cert.c */ | |
734 | DEFINE_LHASH_OF(X509_NAME); | |
735 | ||
736 | # define TLSEXT_KEYNAME_LENGTH 16 | |
737 | # define TLSEXT_TICK_KEY_LENGTH 32 | |
738 | ||
739 | typedef struct ssl_ctx_ext_secure_st { | |
740 | unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; | |
741 | unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; | |
742 | } SSL_CTX_EXT_SECURE; | |
743 | ||
744 | struct ssl_ctx_st { | |
745 | const SSL_METHOD *method; | |
746 | STACK_OF(SSL_CIPHER) *cipher_list; | |
747 | /* same as above but sorted for lookup */ | |
748 | STACK_OF(SSL_CIPHER) *cipher_list_by_id; | |
749 | /* TLSv1.3 specific ciphersuites */ | |
750 | STACK_OF(SSL_CIPHER) *tls13_ciphersuites; | |
751 | struct x509_store_st /* X509_STORE */ *cert_store; | |
752 | LHASH_OF(SSL_SESSION) *sessions; | |
753 | /* | |
754 | * Most session-ids that will be cached, default is | |
755 | * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. | |
756 | */ | |
757 | size_t session_cache_size; | |
758 | struct ssl_session_st *session_cache_head; | |
759 | struct ssl_session_st *session_cache_tail; | |
760 | /* | |
761 | * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT, | |
762 | * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which | |
763 | * means only SSL_accept will cache SSL_SESSIONS. | |
764 | */ | |
765 | uint32_t session_cache_mode; | |
766 | /* | |
767 | * If timeout is not 0, it is the default timeout value set when | |
768 | * SSL_new() is called. This has been put in to make life easier to set | |
769 | * things up | |
770 | */ | |
771 | long session_timeout; | |
772 | /* | |
773 | * If this callback is not null, it will be called each time a session id | |
774 | * is added to the cache. If this function returns 1, it means that the | |
775 | * callback will do a SSL_SESSION_free() when it has finished using it. | |
776 | * Otherwise, on 0, it means the callback has finished with it. If | |
777 | * remove_session_cb is not null, it will be called when a session-id is | |
778 | * removed from the cache. After the call, OpenSSL will | |
779 | * SSL_SESSION_free() it. | |
780 | */ | |
781 | int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess); | |
782 | void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess); | |
783 | SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl, | |
784 | const unsigned char *data, int len, | |
785 | int *copy); | |
786 | struct { | |
787 | TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */ | |
788 | TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */ | |
789 | TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */ | |
790 | TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */ | |
791 | TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */ | |
792 | TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */ | |
793 | TSAN_QUALIFIER int sess_miss; /* session lookup misses */ | |
794 | TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */ | |
795 | TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */ | |
796 | TSAN_QUALIFIER int sess_hit; /* session reuse actually done */ | |
797 | TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in | |
798 | * the cache was passed back via | |
799 | * the callback. This indicates | |
800 | * that the application is | |
801 | * supplying session-id's from | |
802 | * other processes - spooky | |
803 | * :-) */ | |
804 | } stats; | |
805 | ||
806 | CRYPTO_REF_COUNT references; | |
807 | ||
808 | /* if defined, these override the X509_verify_cert() calls */ | |
809 | int (*app_verify_callback) (X509_STORE_CTX *, void *); | |
810 | void *app_verify_arg; | |
811 | /* | |
812 | * before OpenSSL 0.9.7, 'app_verify_arg' was ignored | |
813 | * ('app_verify_callback' was called with just one argument) | |
814 | */ | |
815 | ||
816 | /* Default password callback. */ | |
817 | pem_password_cb *default_passwd_callback; | |
818 | ||
819 | /* Default password callback user data. */ | |
820 | void *default_passwd_callback_userdata; | |
821 | ||
822 | /* get client cert callback */ | |
823 | int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey); | |
824 | ||
825 | /* cookie generate callback */ | |
826 | int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie, | |
827 | unsigned int *cookie_len); | |
828 | ||
829 | /* verify cookie callback */ | |
830 | int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie, | |
831 | unsigned int cookie_len); | |
832 | ||
833 | /* TLS1.3 app-controlled cookie generate callback */ | |
834 | int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie, | |
835 | size_t *cookie_len); | |
836 | ||
837 | /* TLS1.3 verify app-controlled cookie callback */ | |
838 | int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie, | |
839 | size_t cookie_len); | |
840 | ||
841 | CRYPTO_EX_DATA ex_data; | |
842 | ||
843 | const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */ | |
844 | const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */ | |
845 | ||
846 | STACK_OF(X509) *extra_certs; | |
847 | STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */ | |
848 | ||
849 | /* Default values used when no per-SSL value is defined follow */ | |
850 | ||
851 | /* used if SSL's info_callback is NULL */ | |
852 | void (*info_callback) (const SSL *ssl, int type, int val); | |
853 | ||
854 | /* | |
855 | * What we put in certificate_authorities extension for TLS 1.3 | |
856 | * (ClientHello and CertificateRequest) or just client cert requests for | |
857 | * earlier versions. If client_ca_names is populated then it is only used | |
858 | * for client cert requests, and in preference to ca_names. | |
859 | */ | |
860 | STACK_OF(X509_NAME) *ca_names; | |
861 | STACK_OF(X509_NAME) *client_ca_names; | |
862 | ||
863 | /* | |
864 | * Default values to use in SSL structures follow (these are copied by | |
865 | * SSL_new) | |
866 | */ | |
867 | ||
868 | uint32_t options; | |
869 | uint32_t mode; | |
870 | int min_proto_version; | |
871 | int max_proto_version; | |
872 | size_t max_cert_list; | |
873 | ||
874 | struct cert_st /* CERT */ *cert; | |
875 | int read_ahead; | |
876 | ||
877 | /* callback that allows applications to peek at protocol messages */ | |
878 | void (*msg_callback) (int write_p, int version, int content_type, | |
879 | const void *buf, size_t len, SSL *ssl, void *arg); | |
880 | void *msg_callback_arg; | |
881 | ||
882 | uint32_t verify_mode; | |
883 | size_t sid_ctx_length; | |
884 | unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; | |
885 | /* called 'verify_callback' in the SSL */ | |
886 | int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx); | |
887 | ||
888 | /* Default generate session ID callback. */ | |
889 | GEN_SESSION_CB generate_session_id; | |
890 | ||
891 | X509_VERIFY_PARAM *param; | |
892 | ||
893 | int quiet_shutdown; | |
894 | ||
895 | # ifndef OPENSSL_NO_CT | |
896 | CTLOG_STORE *ctlog_store; /* CT Log Store */ | |
897 | /* | |
898 | * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. | |
899 | * If they are not, the connection should be aborted. | |
900 | */ | |
901 | ssl_ct_validation_cb ct_validation_callback; | |
902 | void *ct_validation_callback_arg; | |
903 | # endif | |
904 | ||
905 | /* | |
906 | * If we're using more than one pipeline how should we divide the data | |
907 | * up between the pipes? | |
908 | */ | |
909 | size_t split_send_fragment; | |
910 | /* | |
911 | * Maximum amount of data to send in one fragment. actual record size can | |
912 | * be more than this due to padding and MAC overheads. | |
913 | */ | |
914 | size_t max_send_fragment; | |
915 | ||
916 | /* Up to how many pipelines should we use? If 0 then 1 is assumed */ | |
917 | size_t max_pipelines; | |
918 | ||
919 | /* The default read buffer length to use (0 means not set) */ | |
920 | size_t default_read_buf_len; | |
921 | ||
922 | # ifndef OPENSSL_NO_ENGINE | |
923 | /* | |
924 | * Engine to pass requests for client certs to | |
925 | */ | |
926 | ENGINE *client_cert_engine; | |
927 | # endif | |
928 | ||
929 | /* ClientHello callback. Mostly for extensions, but not entirely. */ | |
930 | SSL_client_hello_cb_fn client_hello_cb; | |
931 | void *client_hello_cb_arg; | |
932 | ||
933 | /* TLS extensions. */ | |
934 | struct { | |
935 | /* TLS extensions servername callback */ | |
936 | int (*servername_cb) (SSL *, int *, void *); | |
937 | void *servername_arg; | |
938 | /* RFC 4507 session ticket keys */ | |
939 | unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; | |
940 | SSL_CTX_EXT_SECURE *secure; | |
941 | /* Callback to support customisation of ticket key setting */ | |
942 | int (*ticket_key_cb) (SSL *ssl, | |
943 | unsigned char *name, unsigned char *iv, | |
944 | EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); | |
945 | ||
946 | /* certificate status request info */ | |
947 | /* Callback for status request */ | |
948 | int (*status_cb) (SSL *ssl, void *arg); | |
949 | void *status_arg; | |
950 | /* ext status type used for CSR extension (OCSP Stapling) */ | |
951 | int status_type; | |
952 | /* RFC 4366 Maximum Fragment Length Negotiation */ | |
953 | uint8_t max_fragment_len_mode; | |
954 | ||
955 | # ifndef OPENSSL_NO_EC | |
956 | /* EC extension values inherited by SSL structure */ | |
957 | size_t ecpointformats_len; | |
958 | unsigned char *ecpointformats; | |
959 | size_t supportedgroups_len; | |
960 | uint16_t *supportedgroups; | |
961 | # endif /* OPENSSL_NO_EC */ | |
962 | ||
963 | /* | |
964 | * ALPN information (we are in the process of transitioning from NPN to | |
965 | * ALPN.) | |
966 | */ | |
967 | ||
968 | /*- | |
969 | * For a server, this contains a callback function that allows the | |
970 | * server to select the protocol for the connection. | |
971 | * out: on successful return, this must point to the raw protocol | |
972 | * name (without the length prefix). | |
973 | * outlen: on successful return, this contains the length of |*out|. | |
974 | * in: points to the client's list of supported protocols in | |
975 | * wire-format. | |
976 | * inlen: the length of |in|. | |
977 | */ | |
978 | int (*alpn_select_cb) (SSL *s, | |
979 | const unsigned char **out, | |
980 | unsigned char *outlen, | |
981 | const unsigned char *in, | |
982 | unsigned int inlen, void *arg); | |
983 | void *alpn_select_cb_arg; | |
984 | ||
985 | /* | |
986 | * For a client, this contains the list of supported protocols in wire | |
987 | * format. | |
988 | */ | |
989 | unsigned char *alpn; | |
990 | size_t alpn_len; | |
991 | ||
992 | # ifndef OPENSSL_NO_NEXTPROTONEG | |
993 | /* Next protocol negotiation information */ | |
994 | ||
995 | /* | |
996 | * For a server, this contains a callback function by which the set of | |
997 | * advertised protocols can be provided. | |
998 | */ | |
999 | SSL_CTX_npn_advertised_cb_func npn_advertised_cb; | |
1000 | void *npn_advertised_cb_arg; | |
1001 | /* | |
1002 | * For a client, this contains a callback function that selects the next | |
1003 | * protocol from the list provided by the server. | |
1004 | */ | |
1005 | SSL_CTX_npn_select_cb_func npn_select_cb; | |
1006 | void *npn_select_cb_arg; | |
1007 | # endif | |
1008 | ||
1009 | unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH]; | |
1010 | } ext; | |
1011 | ||
1012 | # ifndef OPENSSL_NO_PSK | |
1013 | SSL_psk_client_cb_func psk_client_callback; | |
1014 | SSL_psk_server_cb_func psk_server_callback; | |
1015 | # endif | |
1016 | SSL_psk_find_session_cb_func psk_find_session_cb; | |
1017 | SSL_psk_use_session_cb_func psk_use_session_cb; | |
1018 | ||
1019 | # ifndef OPENSSL_NO_SRP | |
1020 | SRP_CTX srp_ctx; /* ctx for SRP authentication */ | |
1021 | # endif | |
1022 | ||
1023 | /* Shared DANE context */ | |
1024 | struct dane_ctx_st dane; | |
1025 | ||
1026 | # ifndef OPENSSL_NO_SRTP | |
1027 | /* SRTP profiles we are willing to do from RFC 5764 */ | |
1028 | STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; | |
1029 | # endif | |
1030 | /* | |
1031 | * Callback for disabling session caching and ticket support on a session | |
1032 | * basis, depending on the chosen cipher. | |
1033 | */ | |
1034 | int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); | |
1035 | ||
1036 | CRYPTO_RWLOCK *lock; | |
1037 | ||
1038 | /* | |
1039 | * Callback for logging key material for use with debugging tools like | |
1040 | * Wireshark. The callback should log `line` followed by a newline. | |
1041 | */ | |
1042 | SSL_CTX_keylog_cb_func keylog_callback; | |
1043 | ||
1044 | /* | |
1045 | * The maximum number of bytes advertised in session tickets that can be | |
1046 | * sent as early data. | |
1047 | */ | |
1048 | uint32_t max_early_data; | |
1049 | ||
1050 | /* | |
1051 | * The maximum number of bytes of early data that a server will tolerate | |
1052 | * (which should be at least as much as max_early_data). | |
1053 | */ | |
1054 | uint32_t recv_max_early_data; | |
1055 | ||
1056 | /* TLS1.3 padding callback */ | |
1057 | size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); | |
1058 | void *record_padding_arg; | |
1059 | size_t block_padding; | |
1060 | ||
1061 | /* Session ticket appdata */ | |
1062 | SSL_CTX_generate_session_ticket_fn generate_ticket_cb; | |
1063 | SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb; | |
1064 | void *ticket_cb_data; | |
1065 | ||
1066 | /* The number of TLS1.3 tickets to automatically send */ | |
1067 | size_t num_tickets; | |
1068 | ||
1069 | /* Callback to determine if early_data is acceptable or not */ | |
1070 | SSL_allow_early_data_cb_fn allow_early_data_cb; | |
1071 | void *allow_early_data_cb_data; | |
1072 | ||
1073 | /* Do we advertise Post-handshake auth support? */ | |
1074 | int pha_enabled; | |
1075 | }; | |
1076 | ||
1077 | struct ssl_st { | |
1078 | /* | |
1079 | * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, | |
1080 | * DTLS1_VERSION) | |
1081 | */ | |
1082 | int version; | |
1083 | /* SSLv3 */ | |
1084 | const SSL_METHOD *method; | |
1085 | /* | |
1086 | * There are 2 BIO's even though they are normally both the same. This | |
1087 | * is so data can be read and written to different handlers | |
1088 | */ | |
1089 | /* used by SSL_read */ | |
1090 | BIO *rbio; | |
1091 | /* used by SSL_write */ | |
1092 | BIO *wbio; | |
1093 | /* used during session-id reuse to concatenate messages */ | |
1094 | BIO *bbio; | |
1095 | /* | |
1096 | * This holds a variable that indicates what we were doing when a 0 or -1 | |
1097 | * is returned. This is needed for non-blocking IO so we know what | |
1098 | * request needs re-doing when in SSL_accept or SSL_connect | |
1099 | */ | |
1100 | int rwstate; | |
1101 | int (*handshake_func) (SSL *); | |
1102 | /* | |
1103 | * Imagine that here's a boolean member "init" that is switched as soon | |
1104 | * as SSL_set_{accept/connect}_state is called for the first time, so | |
1105 | * that "state" and "handshake_func" are properly initialized. But as | |
1106 | * handshake_func is == 0 until then, we use this test instead of an | |
1107 | * "init" member. | |
1108 | */ | |
1109 | /* are we the server side? */ | |
1110 | int server; | |
1111 | /* | |
1112 | * Generate a new session or reuse an old one. | |
1113 | * NB: For servers, the 'new' session may actually be a previously | |
1114 | * cached session or even the previous session unless | |
1115 | * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set | |
1116 | */ | |
1117 | int new_session; | |
1118 | /* don't send shutdown packets */ | |
1119 | int quiet_shutdown; | |
1120 | /* we have shut things down, 0x01 sent, 0x02 for received */ | |
1121 | int shutdown; | |
1122 | /* where we are */ | |
1123 | OSSL_STATEM statem; | |
1124 | SSL_EARLY_DATA_STATE early_data_state; | |
1125 | BUF_MEM *init_buf; /* buffer used during init */ | |
1126 | void *init_msg; /* pointer to handshake message body, set by | |
1127 | * ssl3_get_message() */ | |
1128 | size_t init_num; /* amount read/written */ | |
1129 | size_t init_off; /* amount read/written */ | |
1130 | struct ssl3_state_st *s3; /* SSLv3 variables */ | |
1131 | struct dtls1_state_st *d1; /* DTLSv1 variables */ | |
1132 | /* callback that allows applications to peek at protocol messages */ | |
1133 | void (*msg_callback) (int write_p, int version, int content_type, | |
1134 | const void *buf, size_t len, SSL *ssl, void *arg); | |
1135 | void *msg_callback_arg; | |
1136 | int hit; /* reusing a previous session */ | |
1137 | X509_VERIFY_PARAM *param; | |
1138 | /* Per connection DANE state */ | |
1139 | SSL_DANE dane; | |
1140 | /* crypto */ | |
1141 | STACK_OF(SSL_CIPHER) *cipher_list; | |
1142 | STACK_OF(SSL_CIPHER) *cipher_list_by_id; | |
1143 | /* TLSv1.3 specific ciphersuites */ | |
1144 | STACK_OF(SSL_CIPHER) *tls13_ciphersuites; | |
1145 | /* | |
1146 | * These are the ones being used, the ones in SSL_SESSION are the ones to | |
1147 | * be 'copied' into these ones | |
1148 | */ | |
1149 | uint32_t mac_flags; | |
1150 | /* | |
1151 | * The TLS1.3 secrets. | |
1152 | */ | |
1153 | unsigned char early_secret[EVP_MAX_MD_SIZE]; | |
1154 | unsigned char handshake_secret[EVP_MAX_MD_SIZE]; | |
1155 | unsigned char master_secret[EVP_MAX_MD_SIZE]; | |
1156 | unsigned char resumption_master_secret[EVP_MAX_MD_SIZE]; | |
1157 | unsigned char client_finished_secret[EVP_MAX_MD_SIZE]; | |
1158 | unsigned char server_finished_secret[EVP_MAX_MD_SIZE]; | |
1159 | unsigned char server_finished_hash[EVP_MAX_MD_SIZE]; | |
1160 | unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE]; | |
1161 | unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE]; | |
1162 | unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE]; | |
1163 | unsigned char exporter_master_secret[EVP_MAX_MD_SIZE]; | |
1164 | unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE]; | |
1165 | EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */ | |
1166 | unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */ | |
1167 | EVP_MD_CTX *read_hash; /* used for mac generation */ | |
1168 | COMP_CTX *compress; /* compression */ | |
1169 | COMP_CTX *expand; /* uncompress */ | |
1170 | EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ | |
1171 | unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */ | |
1172 | EVP_MD_CTX *write_hash; /* used for mac generation */ | |
1173 | /* Count of how many KeyUpdate messages we have received */ | |
1174 | unsigned int key_update_count; | |
1175 | /* session info */ | |
1176 | /* client cert? */ | |
1177 | /* This is used to hold the server certificate used */ | |
1178 | struct cert_st /* CERT */ *cert; | |
1179 | ||
1180 | /* | |
1181 | * The hash of all messages prior to the CertificateVerify, and the length | |
1182 | * of that hash. | |
1183 | */ | |
1184 | unsigned char cert_verify_hash[EVP_MAX_MD_SIZE]; | |
1185 | size_t cert_verify_hash_len; | |
1186 | ||
1187 | /* Flag to indicate whether we should send a HelloRetryRequest or not */ | |
1188 | enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE} | |
1189 | hello_retry_request; | |
1190 | ||
1191 | /* | |
1192 | * the session_id_context is used to ensure sessions are only reused in | |
1193 | * the appropriate context | |
1194 | */ | |
1195 | size_t sid_ctx_length; | |
1196 | unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; | |
1197 | /* This can also be in the session once a session is established */ | |
1198 | SSL_SESSION *session; | |
1199 | /* TLSv1.3 PSK session */ | |
1200 | SSL_SESSION *psksession; | |
1201 | unsigned char *psksession_id; | |
1202 | size_t psksession_id_len; | |
1203 | /* Default generate session ID callback. */ | |
1204 | GEN_SESSION_CB generate_session_id; | |
1205 | /* | |
1206 | * The temporary TLSv1.3 session id. This isn't really a session id at all | |
1207 | * but is a random value sent in the legacy session id field. | |
1208 | */ | |
1209 | unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; | |
1210 | size_t tmp_session_id_len; | |
1211 | /* Used in SSL3 */ | |
1212 | /* | |
1213 | * 0 don't care about verify failure. | |
1214 | * 1 fail if verify fails | |
1215 | */ | |
1216 | uint32_t verify_mode; | |
1217 | /* fail if callback returns 0 */ | |
1218 | int (*verify_callback) (int ok, X509_STORE_CTX *ctx); | |
1219 | /* optional informational callback */ | |
1220 | void (*info_callback) (const SSL *ssl, int type, int val); | |
1221 | /* error bytes to be written */ | |
1222 | int error; | |
1223 | /* actual code */ | |
1224 | int error_code; | |
1225 | # ifndef OPENSSL_NO_PSK | |
1226 | SSL_psk_client_cb_func psk_client_callback; | |
1227 | SSL_psk_server_cb_func psk_server_callback; | |
1228 | # endif | |
1229 | SSL_psk_find_session_cb_func psk_find_session_cb; | |
1230 | SSL_psk_use_session_cb_func psk_use_session_cb; | |
1231 | ||
1232 | SSL_CTX *ctx; | |
1233 | /* Verified chain of peer */ | |
1234 | STACK_OF(X509) *verified_chain; | |
1235 | long verify_result; | |
1236 | /* extra application data */ | |
1237 | CRYPTO_EX_DATA ex_data; | |
1238 | /* | |
1239 | * What we put in certificate_authorities extension for TLS 1.3 | |
1240 | * (ClientHello and CertificateRequest) or just client cert requests for | |
1241 | * earlier versions. If client_ca_names is populated then it is only used | |
1242 | * for client cert requests, and in preference to ca_names. | |
1243 | */ | |
1244 | STACK_OF(X509_NAME) *ca_names; | |
1245 | STACK_OF(X509_NAME) *client_ca_names; | |
1246 | CRYPTO_REF_COUNT references; | |
1247 | /* protocol behaviour */ | |
1248 | uint32_t options; | |
1249 | /* API behaviour */ | |
1250 | uint32_t mode; | |
1251 | int min_proto_version; | |
1252 | int max_proto_version; | |
1253 | size_t max_cert_list; | |
1254 | int first_packet; | |
1255 | /* | |
1256 | * What was passed in ClientHello.legacy_version. Used for RSA pre-master | |
1257 | * secret and SSLv3/TLS (<=1.2) rollback check | |
1258 | */ | |
1259 | int client_version; | |
1260 | /* | |
1261 | * If we're using more than one pipeline how should we divide the data | |
1262 | * up between the pipes? | |
1263 | */ | |
1264 | size_t split_send_fragment; | |
1265 | /* | |
1266 | * Maximum amount of data to send in one fragment. actual record size can | |
1267 | * be more than this due to padding and MAC overheads. | |
1268 | */ | |
1269 | size_t max_send_fragment; | |
1270 | /* Up to how many pipelines should we use? If 0 then 1 is assumed */ | |
1271 | size_t max_pipelines; | |
1272 | ||
1273 | struct { | |
1274 | /* Built-in extension flags */ | |
1275 | uint8_t extflags[TLSEXT_IDX_num_builtins]; | |
1276 | /* TLS extension debug callback */ | |
1277 | void (*debug_cb)(SSL *s, int client_server, int type, | |
1278 | const unsigned char *data, int len, void *arg); | |
1279 | void *debug_arg; | |
1280 | char *hostname; | |
1281 | /* certificate status request info */ | |
1282 | /* Status type or -1 if no status type */ | |
1283 | int status_type; | |
1284 | /* Raw extension data, if seen */ | |
1285 | unsigned char *scts; | |
1286 | /* Length of raw extension data, if seen */ | |
1287 | uint16_t scts_len; | |
1288 | /* Expect OCSP CertificateStatus message */ | |
1289 | int status_expected; | |
1290 | ||
1291 | struct { | |
1292 | /* OCSP status request only */ | |
1293 | STACK_OF(OCSP_RESPID) *ids; | |
1294 | X509_EXTENSIONS *exts; | |
1295 | /* OCSP response received or to be sent */ | |
1296 | unsigned char *resp; | |
1297 | size_t resp_len; | |
1298 | } ocsp; | |
1299 | ||
1300 | /* RFC4507 session ticket expected to be received or sent */ | |
1301 | int ticket_expected; | |
1302 | # ifndef OPENSSL_NO_EC | |
1303 | size_t ecpointformats_len; | |
1304 | /* our list */ | |
1305 | unsigned char *ecpointformats; | |
1306 | # endif /* OPENSSL_NO_EC */ | |
1307 | size_t supportedgroups_len; | |
1308 | /* our list */ | |
1309 | uint16_t *supportedgroups; | |
1310 | /* TLS Session Ticket extension override */ | |
1311 | TLS_SESSION_TICKET_EXT *session_ticket; | |
1312 | /* TLS Session Ticket extension callback */ | |
1313 | tls_session_ticket_ext_cb_fn session_ticket_cb; | |
1314 | void *session_ticket_cb_arg; | |
1315 | /* TLS pre-shared secret session resumption */ | |
1316 | tls_session_secret_cb_fn session_secret_cb; | |
1317 | void *session_secret_cb_arg; | |
1318 | /* | |
1319 | * For a client, this contains the list of supported protocols in wire | |
1320 | * format. | |
1321 | */ | |
1322 | unsigned char *alpn; | |
1323 | size_t alpn_len; | |
1324 | /* | |
1325 | * Next protocol negotiation. For the client, this is the protocol that | |
1326 | * we sent in NextProtocol and is set when handling ServerHello | |
1327 | * extensions. For a server, this is the client's selected_protocol from | |
1328 | * NextProtocol and is set when handling the NextProtocol message, before | |
1329 | * the Finished message. | |
1330 | */ | |
1331 | unsigned char *npn; | |
1332 | size_t npn_len; | |
1333 | ||
1334 | /* The available PSK key exchange modes */ | |
1335 | int psk_kex_mode; | |
1336 | ||
1337 | /* Set to one if we have negotiated ETM */ | |
1338 | int use_etm; | |
1339 | ||
1340 | /* Are we expecting to receive early data? */ | |
1341 | int early_data; | |
1342 | /* Is the session suitable for early data? */ | |
1343 | int early_data_ok; | |
1344 | ||
1345 | /* May be sent by a server in HRR. Must be echoed back in ClientHello */ | |
1346 | unsigned char *tls13_cookie; | |
1347 | size_t tls13_cookie_len; | |
1348 | /* Have we received a cookie from the client? */ | |
1349 | int cookieok; | |
1350 | ||
1351 | /* | |
1352 | * Maximum Fragment Length as per RFC 4366. | |
1353 | * If this member contains one of the allowed values (1-4) | |
1354 | * then we should include Maximum Fragment Length Negotiation | |
1355 | * extension in Client Hello. | |
1356 | * Please note that value of this member does not have direct | |
1357 | * effect. The actual (binding) value is stored in SSL_SESSION, | |
1358 | * as this extension is optional on server side. | |
1359 | */ | |
1360 | uint8_t max_fragment_len_mode; | |
1361 | } ext; | |
1362 | ||
1363 | /* | |
1364 | * Parsed form of the ClientHello, kept around across client_hello_cb | |
1365 | * calls. | |
1366 | */ | |
1367 | CLIENTHELLO_MSG *clienthello; | |
1368 | ||
1369 | /*- | |
1370 | * no further mod of servername | |
1371 | * 0 : call the servername extension callback. | |
1372 | * 1 : prepare 2, allow last ack just after in server callback. | |
1373 | * 2 : don't call servername callback, no ack in server hello | |
1374 | */ | |
1375 | int servername_done; | |
1376 | # ifndef OPENSSL_NO_CT | |
1377 | /* | |
1378 | * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. | |
1379 | * If they are not, the connection should be aborted. | |
1380 | */ | |
1381 | ssl_ct_validation_cb ct_validation_callback; | |
1382 | /* User-supplied argument that is passed to the ct_validation_callback */ | |
1383 | void *ct_validation_callback_arg; | |
1384 | /* | |
1385 | * Consolidated stack of SCTs from all sources. | |
1386 | * Lazily populated by CT_get_peer_scts(SSL*) | |
1387 | */ | |
1388 | STACK_OF(SCT) *scts; | |
1389 | /* Have we attempted to find/parse SCTs yet? */ | |
1390 | int scts_parsed; | |
1391 | # endif | |
1392 | SSL_CTX *session_ctx; /* initial ctx, used to store sessions */ | |
1393 | # ifndef OPENSSL_NO_SRTP | |
1394 | /* What we'll do */ | |
1395 | STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; | |
1396 | /* What's been chosen */ | |
1397 | SRTP_PROTECTION_PROFILE *srtp_profile; | |
1398 | # endif | |
1399 | /*- | |
1400 | * 1 if we are renegotiating. | |
1401 | * 2 if we are a server and are inside a handshake | |
1402 | * (i.e. not just sending a HelloRequest) | |
1403 | */ | |
1404 | int renegotiate; | |
1405 | /* If sending a KeyUpdate is pending */ | |
1406 | int key_update; | |
1407 | /* Post-handshake authentication state */ | |
1408 | SSL_PHA_STATE post_handshake_auth; | |
1409 | int pha_enabled; | |
1410 | uint8_t* pha_context; | |
1411 | size_t pha_context_len; | |
1412 | int certreqs_sent; | |
1413 | EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */ | |
1414 | ||
1415 | # ifndef OPENSSL_NO_SRP | |
1416 | /* ctx for SRP authentication */ | |
1417 | SRP_CTX srp_ctx; | |
1418 | # endif | |
1419 | /* | |
1420 | * Callback for disabling session caching and ticket support on a session | |
1421 | * basis, depending on the chosen cipher. | |
1422 | */ | |
1423 | int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); | |
1424 | RECORD_LAYER rlayer; | |
1425 | /* Default password callback. */ | |
1426 | pem_password_cb *default_passwd_callback; | |
1427 | /* Default password callback user data. */ | |
1428 | void *default_passwd_callback_userdata; | |
1429 | /* Async Job info */ | |
1430 | ASYNC_JOB *job; | |
1431 | ASYNC_WAIT_CTX *waitctx; | |
1432 | size_t asyncrw; | |
1433 | ||
1434 | /* | |
1435 | * The maximum number of bytes advertised in session tickets that can be | |
1436 | * sent as early data. | |
1437 | */ | |
1438 | uint32_t max_early_data; | |
1439 | /* | |
1440 | * The maximum number of bytes of early data that a server will tolerate | |
1441 | * (which should be at least as much as max_early_data). | |
1442 | */ | |
1443 | uint32_t recv_max_early_data; | |
1444 | ||
1445 | /* | |
1446 | * The number of bytes of early data received so far. If we accepted early | |
1447 | * data then this is a count of the plaintext bytes. If we rejected it then | |
1448 | * this is a count of the ciphertext bytes. | |
1449 | */ | |
1450 | uint32_t early_data_count; | |
1451 | ||
1452 | /* TLS1.3 padding callback */ | |
1453 | size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); | |
1454 | void *record_padding_arg; | |
1455 | size_t block_padding; | |
1456 | ||
1457 | CRYPTO_RWLOCK *lock; | |
1458 | RAND_DRBG *drbg; | |
1459 | ||
1460 | /* The number of TLS1.3 tickets to automatically send */ | |
1461 | size_t num_tickets; | |
1462 | /* The number of TLS1.3 tickets actually sent so far */ | |
1463 | size_t sent_tickets; | |
1464 | /* The next nonce value to use when we send a ticket on this connection */ | |
1465 | uint64_t next_ticket_nonce; | |
1466 | ||
1467 | /* Callback to determine if early_data is acceptable or not */ | |
1468 | SSL_allow_early_data_cb_fn allow_early_data_cb; | |
1469 | void *allow_early_data_cb_data; | |
1470 | }; | |
1471 | ||
1472 | /* | |
1473 | * Structure containing table entry of values associated with the signature | |
1474 | * algorithms (signature scheme) extension | |
1475 | */ | |
1476 | typedef struct sigalg_lookup_st { | |
1477 | /* TLS 1.3 signature scheme name */ | |
1478 | const char *name; | |
1479 | /* Raw value used in extension */ | |
1480 | uint16_t sigalg; | |
1481 | /* NID of hash algorithm or NID_undef if no hash */ | |
1482 | int hash; | |
1483 | /* Index of hash algorithm or -1 if no hash algorithm */ | |
1484 | int hash_idx; | |
1485 | /* NID of signature algorithm */ | |
1486 | int sig; | |
1487 | /* Index of signature algorithm */ | |
1488 | int sig_idx; | |
1489 | /* Combined hash and signature NID, if any */ | |
1490 | int sigandhash; | |
1491 | /* Required public key curve (ECDSA only) */ | |
1492 | int curve; | |
1493 | } SIGALG_LOOKUP; | |
1494 | ||
1495 | typedef struct tls_group_info_st { | |
1496 | int nid; /* Curve NID */ | |
1497 | int secbits; /* Bits of security (from SP800-57) */ | |
1498 | uint16_t flags; /* Flags: currently just group type */ | |
1499 | } TLS_GROUP_INFO; | |
1500 | ||
1501 | /* flags values */ | |
1502 | # define TLS_CURVE_TYPE 0x3 /* Mask for group type */ | |
1503 | # define TLS_CURVE_PRIME 0x0 | |
1504 | # define TLS_CURVE_CHAR2 0x1 | |
1505 | # define TLS_CURVE_CUSTOM 0x2 | |
1506 | ||
1507 | typedef struct cert_pkey_st CERT_PKEY; | |
1508 | ||
1509 | /* | |
1510 | * Structure containing table entry of certificate info corresponding to | |
1511 | * CERT_PKEY entries | |
1512 | */ | |
1513 | typedef struct { | |
1514 | int nid; /* NID of pubic key algorithm */ | |
1515 | uint32_t amask; /* authmask corresponding to key type */ | |
1516 | } SSL_CERT_LOOKUP; | |
1517 | ||
1518 | typedef struct ssl3_state_st { | |
1519 | long flags; | |
1520 | size_t read_mac_secret_size; | |
1521 | unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; | |
1522 | size_t write_mac_secret_size; | |
1523 | unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; | |
1524 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
1525 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
1526 | /* flags for countermeasure against known-IV weakness */ | |
1527 | int need_empty_fragments; | |
1528 | int empty_fragment_done; | |
1529 | /* used during startup, digest all incoming/outgoing packets */ | |
1530 | BIO *handshake_buffer; | |
1531 | /* | |
1532 | * When handshake digest is determined, buffer is hashed and | |
1533 | * freed and MD_CTX for the required digest is stored here. | |
1534 | */ | |
1535 | EVP_MD_CTX *handshake_dgst; | |
1536 | /* | |
1537 | * Set whenever an expected ChangeCipherSpec message is processed. | |
1538 | * Unset when the peer's Finished message is received. | |
1539 | * Unexpected ChangeCipherSpec messages trigger a fatal alert. | |
1540 | */ | |
1541 | int change_cipher_spec; | |
1542 | int warn_alert; | |
1543 | int fatal_alert; | |
1544 | /* | |
1545 | * we allow one fatal and one warning alert to be outstanding, send close | |
1546 | * alert via the warning alert | |
1547 | */ | |
1548 | int alert_dispatch; | |
1549 | unsigned char send_alert[2]; | |
1550 | /* | |
1551 | * This flag is set when we should renegotiate ASAP, basically when there | |
1552 | * is no more data in the read or write buffers | |
1553 | */ | |
1554 | int renegotiate; | |
1555 | int total_renegotiations; | |
1556 | int num_renegotiations; | |
1557 | int in_read_app_data; | |
1558 | struct { | |
1559 | /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ | |
1560 | unsigned char finish_md[EVP_MAX_MD_SIZE * 2]; | |
1561 | size_t finish_md_len; | |
1562 | unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2]; | |
1563 | size_t peer_finish_md_len; | |
1564 | size_t message_size; | |
1565 | int message_type; | |
1566 | /* used to hold the new cipher we are going to use */ | |
1567 | const SSL_CIPHER *new_cipher; | |
1568 | # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) | |
1569 | EVP_PKEY *pkey; /* holds short lived DH/ECDH key */ | |
1570 | # endif | |
1571 | /* used for certificate requests */ | |
1572 | int cert_req; | |
1573 | /* Certificate types in certificate request message. */ | |
1574 | uint8_t *ctype; | |
1575 | size_t ctype_len; | |
1576 | /* Certificate authorities list peer sent */ | |
1577 | STACK_OF(X509_NAME) *peer_ca_names; | |
1578 | size_t key_block_length; | |
1579 | unsigned char *key_block; | |
1580 | const EVP_CIPHER *new_sym_enc; | |
1581 | const EVP_MD *new_hash; | |
1582 | int new_mac_pkey_type; | |
1583 | size_t new_mac_secret_size; | |
1584 | # ifndef OPENSSL_NO_COMP | |
1585 | const SSL_COMP *new_compression; | |
1586 | # else | |
1587 | char *new_compression; | |
1588 | # endif | |
1589 | int cert_request; | |
1590 | /* Raw values of the cipher list from a client */ | |
1591 | unsigned char *ciphers_raw; | |
1592 | size_t ciphers_rawlen; | |
1593 | /* Temporary storage for premaster secret */ | |
1594 | unsigned char *pms; | |
1595 | size_t pmslen; | |
1596 | # ifndef OPENSSL_NO_PSK | |
1597 | /* Temporary storage for PSK key */ | |
1598 | unsigned char *psk; | |
1599 | size_t psklen; | |
1600 | # endif | |
1601 | /* Signature algorithm we actually use */ | |
1602 | const SIGALG_LOOKUP *sigalg; | |
1603 | /* Pointer to certificate we use */ | |
1604 | CERT_PKEY *cert; | |
1605 | /* | |
1606 | * signature algorithms peer reports: e.g. supported signature | |
1607 | * algorithms extension for server or as part of a certificate | |
1608 | * request for client. | |
1609 | * Keep track of the algorithms for TLS and X.509 usage separately. | |
1610 | */ | |
1611 | uint16_t *peer_sigalgs; | |
1612 | uint16_t *peer_cert_sigalgs; | |
1613 | /* Size of above arrays */ | |
1614 | size_t peer_sigalgslen; | |
1615 | size_t peer_cert_sigalgslen; | |
1616 | /* Sigalg peer actually uses */ | |
1617 | const SIGALG_LOOKUP *peer_sigalg; | |
1618 | /* | |
1619 | * Set if corresponding CERT_PKEY can be used with current | |
1620 | * SSL session: e.g. appropriate curve, signature algorithms etc. | |
1621 | * If zero it can't be used at all. | |
1622 | */ | |
1623 | uint32_t valid_flags[SSL_PKEY_NUM]; | |
1624 | /* | |
1625 | * For servers the following masks are for the key and auth algorithms | |
1626 | * that are supported by the certs below. For clients they are masks of | |
1627 | * *disabled* algorithms based on the current session. | |
1628 | */ | |
1629 | uint32_t mask_k; | |
1630 | uint32_t mask_a; | |
1631 | /* | |
1632 | * The following are used by the client to see if a cipher is allowed or | |
1633 | * not. It contains the minimum and maximum version the client's using | |
1634 | * based on what it knows so far. | |
1635 | */ | |
1636 | int min_ver; | |
1637 | int max_ver; | |
1638 | } tmp; | |
1639 | ||
1640 | /* Connection binding to prevent renegotiation attacks */ | |
1641 | unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; | |
1642 | size_t previous_client_finished_len; | |
1643 | unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; | |
1644 | size_t previous_server_finished_len; | |
1645 | int send_connection_binding; /* TODOEKR */ | |
1646 | ||
1647 | # ifndef OPENSSL_NO_NEXTPROTONEG | |
1648 | /* | |
1649 | * Set if we saw the Next Protocol Negotiation extension from our peer. | |
1650 | */ | |
1651 | int npn_seen; | |
1652 | # endif | |
1653 | ||
1654 | /* | |
1655 | * ALPN information (we are in the process of transitioning from NPN to | |
1656 | * ALPN.) | |
1657 | */ | |
1658 | ||
1659 | /* | |
1660 | * In a server these point to the selected ALPN protocol after the | |
1661 | * ClientHello has been processed. In a client these contain the protocol | |
1662 | * that the server selected once the ServerHello has been processed. | |
1663 | */ | |
1664 | unsigned char *alpn_selected; | |
1665 | size_t alpn_selected_len; | |
1666 | /* used by the server to know what options were proposed */ | |
1667 | unsigned char *alpn_proposed; | |
1668 | size_t alpn_proposed_len; | |
1669 | /* used by the client to know if it actually sent alpn */ | |
1670 | int alpn_sent; | |
1671 | ||
1672 | # ifndef OPENSSL_NO_EC | |
1673 | /* | |
1674 | * This is set to true if we believe that this is a version of Safari | |
1675 | * running on OS X 10.6 or newer. We wish to know this because Safari on | |
1676 | * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. | |
1677 | */ | |
1678 | char is_probably_safari; | |
1679 | # endif /* !OPENSSL_NO_EC */ | |
1680 | ||
1681 | /* For clients: peer temporary key */ | |
1682 | # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) | |
1683 | /* The group_id for the DH/ECDH key */ | |
1684 | uint16_t group_id; | |
1685 | EVP_PKEY *peer_tmp; | |
1686 | # endif | |
1687 | ||
1688 | } SSL3_STATE; | |
1689 | ||
1690 | /* DTLS structures */ | |
1691 | ||
1692 | # ifndef OPENSSL_NO_SCTP | |
1693 | # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" | |
1694 | # endif | |
1695 | ||
1696 | /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */ | |
1697 | # define DTLS1_MAX_MTU_OVERHEAD 48 | |
1698 | ||
1699 | /* | |
1700 | * Flag used in message reuse to indicate the buffer contains the record | |
1701 | * header as well as the handshake message header. | |
1702 | */ | |
1703 | # define DTLS1_SKIP_RECORD_HEADER 2 | |
1704 | ||
1705 | struct dtls1_retransmit_state { | |
1706 | EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ | |
1707 | EVP_MD_CTX *write_hash; /* used for mac generation */ | |
1708 | COMP_CTX *compress; /* compression */ | |
1709 | SSL_SESSION *session; | |
1710 | unsigned short epoch; | |
1711 | }; | |
1712 | ||
1713 | struct hm_header_st { | |
1714 | unsigned char type; | |
1715 | size_t msg_len; | |
1716 | unsigned short seq; | |
1717 | size_t frag_off; | |
1718 | size_t frag_len; | |
1719 | unsigned int is_ccs; | |
1720 | struct dtls1_retransmit_state saved_retransmit_state; | |
1721 | }; | |
1722 | ||
1723 | struct dtls1_timeout_st { | |
1724 | /* Number of read timeouts so far */ | |
1725 | unsigned int read_timeouts; | |
1726 | /* Number of write timeouts so far */ | |
1727 | unsigned int write_timeouts; | |
1728 | /* Number of alerts received so far */ | |
1729 | unsigned int num_alerts; | |
1730 | }; | |
1731 | ||
1732 | typedef struct hm_fragment_st { | |
1733 | struct hm_header_st msg_header; | |
1734 | unsigned char *fragment; | |
1735 | unsigned char *reassembly; | |
1736 | } hm_fragment; | |
1737 | ||
1738 | typedef struct pqueue_st pqueue; | |
1739 | typedef struct pitem_st pitem; | |
1740 | ||
1741 | struct pitem_st { | |
1742 | unsigned char priority[8]; /* 64-bit value in big-endian encoding */ | |
1743 | void *data; | |
1744 | pitem *next; | |
1745 | }; | |
1746 | ||
1747 | typedef struct pitem_st *piterator; | |
1748 | ||
1749 | pitem *pitem_new(unsigned char *prio64be, void *data); | |
1750 | void pitem_free(pitem *item); | |
1751 | pqueue *pqueue_new(void); | |
1752 | void pqueue_free(pqueue *pq); | |
1753 | pitem *pqueue_insert(pqueue *pq, pitem *item); | |
1754 | pitem *pqueue_peek(pqueue *pq); | |
1755 | pitem *pqueue_pop(pqueue *pq); | |
1756 | pitem *pqueue_find(pqueue *pq, unsigned char *prio64be); | |
1757 | pitem *pqueue_iterator(pqueue *pq); | |
1758 | pitem *pqueue_next(piterator *iter); | |
1759 | size_t pqueue_size(pqueue *pq); | |
1760 | ||
1761 | typedef struct dtls1_state_st { | |
1762 | unsigned char cookie[DTLS1_COOKIE_LENGTH]; | |
1763 | size_t cookie_len; | |
1764 | unsigned int cookie_verified; | |
1765 | /* handshake message numbers */ | |
1766 | unsigned short handshake_write_seq; | |
1767 | unsigned short next_handshake_write_seq; | |
1768 | unsigned short handshake_read_seq; | |
1769 | /* Buffered handshake messages */ | |
1770 | pqueue *buffered_messages; | |
1771 | /* Buffered (sent) handshake records */ | |
1772 | pqueue *sent_messages; | |
1773 | size_t link_mtu; /* max on-the-wire DTLS packet size */ | |
1774 | size_t mtu; /* max DTLS packet size */ | |
1775 | struct hm_header_st w_msg_hdr; | |
1776 | struct hm_header_st r_msg_hdr; | |
1777 | struct dtls1_timeout_st timeout; | |
1778 | /* | |
1779 | * Indicates when the last handshake msg sent will timeout | |
1780 | */ | |
1781 | struct timeval next_timeout; | |
1782 | /* Timeout duration */ | |
1783 | unsigned int timeout_duration_us; | |
1784 | ||
1785 | unsigned int retransmitting; | |
1786 | # ifndef OPENSSL_NO_SCTP | |
1787 | int shutdown_received; | |
1788 | # endif | |
1789 | ||
1790 | DTLS_timer_cb timer_cb; | |
1791 | ||
1792 | } DTLS1_STATE; | |
1793 | ||
1794 | # ifndef OPENSSL_NO_EC | |
1795 | /* | |
1796 | * From ECC-TLS draft, used in encoding the curve type in ECParameters | |
1797 | */ | |
1798 | # define EXPLICIT_PRIME_CURVE_TYPE 1 | |
1799 | # define EXPLICIT_CHAR2_CURVE_TYPE 2 | |
1800 | # define NAMED_CURVE_TYPE 3 | |
1801 | # endif /* OPENSSL_NO_EC */ | |
1802 | ||
1803 | struct cert_pkey_st { | |
1804 | X509 *x509; | |
1805 | EVP_PKEY *privatekey; | |
1806 | /* Chain for this certificate */ | |
1807 | STACK_OF(X509) *chain; | |
1808 | /*- | |
1809 | * serverinfo data for this certificate. The data is in TLS Extension | |
1810 | * wire format, specifically it's a series of records like: | |
1811 | * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension) | |
1812 | * uint16_t length; | |
1813 | * uint8_t data[length]; | |
1814 | */ | |
1815 | unsigned char *serverinfo; | |
1816 | size_t serverinfo_length; | |
1817 | }; | |
1818 | /* Retrieve Suite B flags */ | |
1819 | # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS) | |
1820 | /* Uses to check strict mode: suite B modes are always strict */ | |
1821 | # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \ | |
1822 | (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT) | |
1823 | ||
1824 | typedef enum { | |
1825 | ENDPOINT_CLIENT = 0, | |
1826 | ENDPOINT_SERVER, | |
1827 | ENDPOINT_BOTH | |
1828 | } ENDPOINT; | |
1829 | ||
1830 | ||
1831 | typedef struct { | |
1832 | unsigned short ext_type; | |
1833 | ENDPOINT role; | |
1834 | /* The context which this extension applies to */ | |
1835 | unsigned int context; | |
1836 | /* | |
1837 | * Per-connection flags relating to this extension type: not used if | |
1838 | * part of an SSL_CTX structure. | |
1839 | */ | |
1840 | uint32_t ext_flags; | |
1841 | SSL_custom_ext_add_cb_ex add_cb; | |
1842 | SSL_custom_ext_free_cb_ex free_cb; | |
1843 | void *add_arg; | |
1844 | SSL_custom_ext_parse_cb_ex parse_cb; | |
1845 | void *parse_arg; | |
1846 | } custom_ext_method; | |
1847 | ||
1848 | /* ext_flags values */ | |
1849 | ||
1850 | /* | |
1851 | * Indicates an extension has been received. Used to check for unsolicited or | |
1852 | * duplicate extensions. | |
1853 | */ | |
1854 | # define SSL_EXT_FLAG_RECEIVED 0x1 | |
1855 | /* | |
1856 | * Indicates an extension has been sent: used to enable sending of | |
1857 | * corresponding ServerHello extension. | |
1858 | */ | |
1859 | # define SSL_EXT_FLAG_SENT 0x2 | |
1860 | ||
1861 | typedef struct { | |
1862 | custom_ext_method *meths; | |
1863 | size_t meths_count; | |
1864 | } custom_ext_methods; | |
1865 | ||
1866 | typedef struct cert_st { | |
1867 | /* Current active set */ | |
1868 | /* | |
1869 | * ALWAYS points to an element of the pkeys array | |
1870 | * Probably it would make more sense to store | |
1871 | * an index, not a pointer. | |
1872 | */ | |
1873 | CERT_PKEY *key; | |
1874 | # ifndef OPENSSL_NO_DH | |
1875 | EVP_PKEY *dh_tmp; | |
1876 | DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); | |
1877 | int dh_tmp_auto; | |
1878 | # endif | |
1879 | /* Flags related to certificates */ | |
1880 | uint32_t cert_flags; | |
1881 | CERT_PKEY pkeys[SSL_PKEY_NUM]; | |
1882 | /* Custom certificate types sent in certificate request message. */ | |
1883 | uint8_t *ctype; | |
1884 | size_t ctype_len; | |
1885 | /* | |
1886 | * supported signature algorithms. When set on a client this is sent in | |
1887 | * the client hello as the supported signature algorithms extension. For | |
1888 | * servers it represents the signature algorithms we are willing to use. | |
1889 | */ | |
1890 | uint16_t *conf_sigalgs; | |
1891 | /* Size of above array */ | |
1892 | size_t conf_sigalgslen; | |
1893 | /* | |
1894 | * Client authentication signature algorithms, if not set then uses | |
1895 | * conf_sigalgs. On servers these will be the signature algorithms sent | |
1896 | * to the client in a certificate request for TLS 1.2. On a client this | |
1897 | * represents the signature algorithms we are willing to use for client | |
1898 | * authentication. | |
1899 | */ | |
1900 | uint16_t *client_sigalgs; | |
1901 | /* Size of above array */ | |
1902 | size_t client_sigalgslen; | |
1903 | /* | |
1904 | * Signature algorithms shared by client and server: cached because these | |
1905 | * are used most often. | |
1906 | */ | |
1907 | const SIGALG_LOOKUP **shared_sigalgs; | |
1908 | size_t shared_sigalgslen; | |
1909 | /* | |
1910 | * Certificate setup callback: if set is called whenever a certificate | |
1911 | * may be required (client or server). the callback can then examine any | |
1912 | * appropriate parameters and setup any certificates required. This | |
1913 | * allows advanced applications to select certificates on the fly: for | |
1914 | * example based on supported signature algorithms or curves. | |
1915 | */ | |
1916 | int (*cert_cb) (SSL *ssl, void *arg); | |
1917 | void *cert_cb_arg; | |
1918 | /* | |
1919 | * Optional X509_STORE for chain building or certificate validation If | |
1920 | * NULL the parent SSL_CTX store is used instead. | |
1921 | */ | |
1922 | X509_STORE *chain_store; | |
1923 | X509_STORE *verify_store; | |
1924 | /* Custom extensions */ | |
1925 | custom_ext_methods custext; | |
1926 | /* Security callback */ | |
1927 | int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, | |
1928 | void *other, void *ex); | |
1929 | /* Security level */ | |
1930 | int sec_level; | |
1931 | void *sec_ex; | |
1932 | # ifndef OPENSSL_NO_PSK | |
1933 | /* If not NULL psk identity hint to use for servers */ | |
1934 | char *psk_identity_hint; | |
1935 | # endif | |
1936 | CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */ | |
1937 | CRYPTO_RWLOCK *lock; | |
1938 | } CERT; | |
1939 | ||
1940 | # define FP_ICC (int (*)(const void *,const void *)) | |
1941 | ||
1942 | /* | |
1943 | * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit | |
1944 | * of a mess of functions, but hell, think of it as an opaque structure :-) | |
1945 | */ | |
1946 | typedef struct ssl3_enc_method { | |
1947 | int (*enc) (SSL *, SSL3_RECORD *, size_t, int); | |
1948 | int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int); | |
1949 | int (*setup_key_block) (SSL *); | |
1950 | int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *, | |
1951 | size_t, size_t *); | |
1952 | int (*change_cipher_state) (SSL *, int); | |
1953 | size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *); | |
1954 | const char *client_finished_label; | |
1955 | size_t client_finished_label_len; | |
1956 | const char *server_finished_label; | |
1957 | size_t server_finished_label_len; | |
1958 | int (*alert_value) (int); | |
1959 | int (*export_keying_material) (SSL *, unsigned char *, size_t, | |
1960 | const char *, size_t, | |
1961 | const unsigned char *, size_t, | |
1962 | int use_context); | |
1963 | /* Various flags indicating protocol version requirements */ | |
1964 | uint32_t enc_flags; | |
1965 | /* Set the handshake header */ | |
1966 | int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type); | |
1967 | /* Close construction of the handshake message */ | |
1968 | int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype); | |
1969 | /* Write out handshake message */ | |
1970 | int (*do_write) (SSL *s); | |
1971 | } SSL3_ENC_METHOD; | |
1972 | ||
1973 | # define ssl_set_handshake_header(s, pkt, htype) \ | |
1974 | s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) | |
1975 | # define ssl_close_construct_packet(s, pkt, htype) \ | |
1976 | s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) | |
1977 | # define ssl_do_write(s) s->method->ssl3_enc->do_write(s) | |
1978 | ||
1979 | /* Values for enc_flags */ | |
1980 | ||
1981 | /* Uses explicit IV for CBC mode */ | |
1982 | # define SSL_ENC_FLAG_EXPLICIT_IV 0x1 | |
1983 | /* Uses signature algorithms extension */ | |
1984 | # define SSL_ENC_FLAG_SIGALGS 0x2 | |
1985 | /* Uses SHA256 default PRF */ | |
1986 | # define SSL_ENC_FLAG_SHA256_PRF 0x4 | |
1987 | /* Is DTLS */ | |
1988 | # define SSL_ENC_FLAG_DTLS 0x8 | |
1989 | /* | |
1990 | * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may | |
1991 | * apply to others in future. | |
1992 | */ | |
1993 | # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10 | |
1994 | ||
1995 | # ifndef OPENSSL_NO_COMP | |
1996 | /* Used for holding the relevant compression methods loaded into SSL_CTX */ | |
1997 | typedef struct ssl3_comp_st { | |
1998 | int comp_id; /* The identifier byte for this compression | |
1999 | * type */ | |
2000 | char *name; /* Text name used for the compression type */ | |
2001 | COMP_METHOD *method; /* The method :-) */ | |
2002 | } SSL3_COMP; | |
2003 | # endif | |
2004 | ||
2005 | typedef enum downgrade_en { | |
2006 | DOWNGRADE_NONE, | |
2007 | DOWNGRADE_TO_1_2, | |
2008 | DOWNGRADE_TO_1_1 | |
2009 | } DOWNGRADE; | |
2010 | ||
2011 | /* | |
2012 | * Dummy status type for the status_type extension. Indicates no status type | |
2013 | * set | |
2014 | */ | |
2015 | #define TLSEXT_STATUSTYPE_nothing -1 | |
2016 | ||
2017 | /* Sigalgs values */ | |
2018 | #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403 | |
2019 | #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503 | |
2020 | #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603 | |
2021 | #define TLSEXT_SIGALG_ecdsa_sha224 0x0303 | |
2022 | #define TLSEXT_SIGALG_ecdsa_sha1 0x0203 | |
2023 | #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804 | |
2024 | #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805 | |
2025 | #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806 | |
2026 | #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809 | |
2027 | #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a | |
2028 | #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b | |
2029 | #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401 | |
2030 | #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501 | |
2031 | #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601 | |
2032 | #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301 | |
2033 | #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201 | |
2034 | #define TLSEXT_SIGALG_dsa_sha256 0x0402 | |
2035 | #define TLSEXT_SIGALG_dsa_sha384 0x0502 | |
2036 | #define TLSEXT_SIGALG_dsa_sha512 0x0602 | |
2037 | #define TLSEXT_SIGALG_dsa_sha224 0x0302 | |
2038 | #define TLSEXT_SIGALG_dsa_sha1 0x0202 | |
2039 | #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee | |
2040 | #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef | |
2041 | #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded | |
2042 | ||
2043 | #define TLSEXT_SIGALG_ed25519 0x0807 | |
2044 | #define TLSEXT_SIGALG_ed448 0x0808 | |
2045 | ||
2046 | /* Known PSK key exchange modes */ | |
2047 | #define TLSEXT_KEX_MODE_KE 0x00 | |
2048 | #define TLSEXT_KEX_MODE_KE_DHE 0x01 | |
2049 | ||
2050 | /* | |
2051 | * Internal representations of key exchange modes | |
2052 | */ | |
2053 | #define TLSEXT_KEX_MODE_FLAG_NONE 0 | |
2054 | #define TLSEXT_KEX_MODE_FLAG_KE 1 | |
2055 | #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2 | |
2056 | ||
2057 | /* An invalid index into the TLSv1.3 PSK identities */ | |
2058 | #define TLSEXT_PSK_BAD_IDENTITY -1 | |
2059 | ||
2060 | #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \ | |
2061 | s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) | |
2062 | ||
2063 | /* A dummy signature value not valid for TLSv1.2 signature algs */ | |
2064 | #define TLSEXT_signature_rsa_pss 0x0101 | |
2065 | ||
2066 | /* TLSv1.3 downgrade protection sentinel values */ | |
2067 | extern const unsigned char tls11downgrade[8]; | |
2068 | extern const unsigned char tls12downgrade[8]; | |
2069 | ||
2070 | extern SSL3_ENC_METHOD ssl3_undef_enc_method; | |
2071 | ||
2072 | __owur const SSL_METHOD *ssl_bad_method(int ver); | |
2073 | __owur const SSL_METHOD *sslv3_method(void); | |
2074 | __owur const SSL_METHOD *sslv3_server_method(void); | |
2075 | __owur const SSL_METHOD *sslv3_client_method(void); | |
2076 | __owur const SSL_METHOD *tlsv1_method(void); | |
2077 | __owur const SSL_METHOD *tlsv1_server_method(void); | |
2078 | __owur const SSL_METHOD *tlsv1_client_method(void); | |
2079 | __owur const SSL_METHOD *tlsv1_1_method(void); | |
2080 | __owur const SSL_METHOD *tlsv1_1_server_method(void); | |
2081 | __owur const SSL_METHOD *tlsv1_1_client_method(void); | |
2082 | __owur const SSL_METHOD *tlsv1_2_method(void); | |
2083 | __owur const SSL_METHOD *tlsv1_2_server_method(void); | |
2084 | __owur const SSL_METHOD *tlsv1_2_client_method(void); | |
2085 | __owur const SSL_METHOD *tlsv1_3_method(void); | |
2086 | __owur const SSL_METHOD *tlsv1_3_server_method(void); | |
2087 | __owur const SSL_METHOD *tlsv1_3_client_method(void); | |
2088 | __owur const SSL_METHOD *dtlsv1_method(void); | |
2089 | __owur const SSL_METHOD *dtlsv1_server_method(void); | |
2090 | __owur const SSL_METHOD *dtlsv1_client_method(void); | |
2091 | __owur const SSL_METHOD *dtls_bad_ver_client_method(void); | |
2092 | __owur const SSL_METHOD *dtlsv1_2_method(void); | |
2093 | __owur const SSL_METHOD *dtlsv1_2_server_method(void); | |
2094 | __owur const SSL_METHOD *dtlsv1_2_client_method(void); | |
2095 | ||
2096 | extern const SSL3_ENC_METHOD TLSv1_enc_data; | |
2097 | extern const SSL3_ENC_METHOD TLSv1_1_enc_data; | |
2098 | extern const SSL3_ENC_METHOD TLSv1_2_enc_data; | |
2099 | extern const SSL3_ENC_METHOD TLSv1_3_enc_data; | |
2100 | extern const SSL3_ENC_METHOD SSLv3_enc_data; | |
2101 | extern const SSL3_ENC_METHOD DTLSv1_enc_data; | |
2102 | extern const SSL3_ENC_METHOD DTLSv1_2_enc_data; | |
2103 | ||
2104 | /* | |
2105 | * Flags for SSL methods | |
2106 | */ | |
2107 | # define SSL_METHOD_NO_FIPS (1U<<0) | |
2108 | # define SSL_METHOD_NO_SUITEB (1U<<1) | |
2109 | ||
2110 | # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \ | |
2111 | s_connect, enc_data) \ | |
2112 | const SSL_METHOD *func_name(void) \ | |
2113 | { \ | |
2114 | static const SSL_METHOD func_name##_data= { \ | |
2115 | version, \ | |
2116 | flags, \ | |
2117 | mask, \ | |
2118 | tls1_new, \ | |
2119 | tls1_clear, \ | |
2120 | tls1_free, \ | |
2121 | s_accept, \ | |
2122 | s_connect, \ | |
2123 | ssl3_read, \ | |
2124 | ssl3_peek, \ | |
2125 | ssl3_write, \ | |
2126 | ssl3_shutdown, \ | |
2127 | ssl3_renegotiate, \ | |
2128 | ssl3_renegotiate_check, \ | |
2129 | ssl3_read_bytes, \ | |
2130 | ssl3_write_bytes, \ | |
2131 | ssl3_dispatch_alert, \ | |
2132 | ssl3_ctrl, \ | |
2133 | ssl3_ctx_ctrl, \ | |
2134 | ssl3_get_cipher_by_char, \ | |
2135 | ssl3_put_cipher_by_char, \ | |
2136 | ssl3_pending, \ | |
2137 | ssl3_num_ciphers, \ | |
2138 | ssl3_get_cipher, \ | |
2139 | tls1_default_timeout, \ | |
2140 | &enc_data, \ | |
2141 | ssl_undefined_void_function, \ | |
2142 | ssl3_callback_ctrl, \ | |
2143 | ssl3_ctx_callback_ctrl, \ | |
2144 | }; \ | |
2145 | return &func_name##_data; \ | |
2146 | } | |
2147 | ||
2148 | # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \ | |
2149 | const SSL_METHOD *func_name(void) \ | |
2150 | { \ | |
2151 | static const SSL_METHOD func_name##_data= { \ | |
2152 | SSL3_VERSION, \ | |
2153 | SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \ | |
2154 | SSL_OP_NO_SSLv3, \ | |
2155 | ssl3_new, \ | |
2156 | ssl3_clear, \ | |
2157 | ssl3_free, \ | |
2158 | s_accept, \ | |
2159 | s_connect, \ | |
2160 | ssl3_read, \ | |
2161 | ssl3_peek, \ | |
2162 | ssl3_write, \ | |
2163 | ssl3_shutdown, \ | |
2164 | ssl3_renegotiate, \ | |
2165 | ssl3_renegotiate_check, \ | |
2166 | ssl3_read_bytes, \ | |
2167 | ssl3_write_bytes, \ | |
2168 | ssl3_dispatch_alert, \ | |
2169 | ssl3_ctrl, \ | |
2170 | ssl3_ctx_ctrl, \ | |
2171 | ssl3_get_cipher_by_char, \ | |
2172 | ssl3_put_cipher_by_char, \ | |
2173 | ssl3_pending, \ | |
2174 | ssl3_num_ciphers, \ | |
2175 | ssl3_get_cipher, \ | |
2176 | ssl3_default_timeout, \ | |
2177 | &SSLv3_enc_data, \ | |
2178 | ssl_undefined_void_function, \ | |
2179 | ssl3_callback_ctrl, \ | |
2180 | ssl3_ctx_callback_ctrl, \ | |
2181 | }; \ | |
2182 | return &func_name##_data; \ | |
2183 | } | |
2184 | ||
2185 | # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \ | |
2186 | s_connect, enc_data) \ | |
2187 | const SSL_METHOD *func_name(void) \ | |
2188 | { \ | |
2189 | static const SSL_METHOD func_name##_data= { \ | |
2190 | version, \ | |
2191 | flags, \ | |
2192 | mask, \ | |
2193 | dtls1_new, \ | |
2194 | dtls1_clear, \ | |
2195 | dtls1_free, \ | |
2196 | s_accept, \ | |
2197 | s_connect, \ | |
2198 | ssl3_read, \ | |
2199 | ssl3_peek, \ | |
2200 | ssl3_write, \ | |
2201 | dtls1_shutdown, \ | |
2202 | ssl3_renegotiate, \ | |
2203 | ssl3_renegotiate_check, \ | |
2204 | dtls1_read_bytes, \ | |
2205 | dtls1_write_app_data_bytes, \ | |
2206 | dtls1_dispatch_alert, \ | |
2207 | dtls1_ctrl, \ | |
2208 | ssl3_ctx_ctrl, \ | |
2209 | ssl3_get_cipher_by_char, \ | |
2210 | ssl3_put_cipher_by_char, \ | |
2211 | ssl3_pending, \ | |
2212 | ssl3_num_ciphers, \ | |
2213 | ssl3_get_cipher, \ | |
2214 | dtls1_default_timeout, \ | |
2215 | &enc_data, \ | |
2216 | ssl_undefined_void_function, \ | |
2217 | ssl3_callback_ctrl, \ | |
2218 | ssl3_ctx_callback_ctrl, \ | |
2219 | }; \ | |
2220 | return &func_name##_data; \ | |
2221 | } | |
2222 | ||
2223 | struct openssl_ssl_test_functions { | |
2224 | int (*p_ssl_init_wbio_buffer) (SSL *s); | |
2225 | int (*p_ssl3_setup_buffers) (SSL *s); | |
2226 | }; | |
2227 | ||
2228 | const char *ssl_protocol_to_string(int version); | |
2229 | ||
2230 | /* Returns true if certificate and private key for 'idx' are present */ | |
2231 | static ossl_inline int ssl_has_cert(const SSL *s, int idx) | |
2232 | { | |
2233 | if (idx < 0 || idx >= SSL_PKEY_NUM) | |
2234 | return 0; | |
2235 | return s->cert->pkeys[idx].x509 != NULL | |
2236 | && s->cert->pkeys[idx].privatekey != NULL; | |
2237 | } | |
2238 | ||
2239 | static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups, | |
2240 | size_t *pgroupslen) | |
2241 | { | |
2242 | *pgroups = s->session->ext.supportedgroups; | |
2243 | *pgroupslen = s->session->ext.supportedgroups_len; | |
2244 | } | |
2245 | ||
2246 | # ifndef OPENSSL_UNIT_TEST | |
2247 | ||
2248 | __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes); | |
2249 | __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written); | |
2250 | void ssl_clear_cipher_ctx(SSL *s); | |
2251 | int ssl_clear_bad_session(SSL *s); | |
2252 | __owur CERT *ssl_cert_new(void); | |
2253 | __owur CERT *ssl_cert_dup(CERT *cert); | |
2254 | void ssl_cert_clear_certs(CERT *c); | |
2255 | void ssl_cert_free(CERT *c); | |
2256 | __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss); | |
2257 | __owur int ssl_get_new_session(SSL *s, int session); | |
2258 | __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, | |
2259 | size_t sess_id_len); | |
2260 | __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello); | |
2261 | __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket); | |
2262 | __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); | |
2263 | DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); | |
2264 | __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, | |
2265 | const SSL_CIPHER *const *bp); | |
2266 | __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, | |
2267 | STACK_OF(SSL_CIPHER) *tls13_ciphersuites, | |
2268 | STACK_OF(SSL_CIPHER) **cipher_list, | |
2269 | STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
2270 | const char *rule_str, | |
2271 | CERT *c); | |
2272 | __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format); | |
2273 | __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, | |
2274 | STACK_OF(SSL_CIPHER) **skp, | |
2275 | STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, | |
2276 | int fatal); | |
2277 | void ssl_update_cache(SSL *s, int mode); | |
2278 | __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, | |
2279 | const EVP_MD **md, int *mac_pkey_type, | |
2280 | size_t *mac_secret_size, SSL_COMP **comp, | |
2281 | int use_etm); | |
2282 | __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, | |
2283 | size_t *int_overhead, size_t *blocksize, | |
2284 | size_t *ext_overhead); | |
2285 | __owur int ssl_cert_is_disabled(size_t idx); | |
2286 | __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, | |
2287 | const unsigned char *ptr, | |
2288 | int all); | |
2289 | __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); | |
2290 | __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); | |
2291 | __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); | |
2292 | __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); | |
2293 | __owur int ssl_cert_select_current(CERT *c, X509 *x); | |
2294 | __owur int ssl_cert_set_current(CERT *c, long arg); | |
2295 | void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg); | |
2296 | ||
2297 | __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); | |
2298 | __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags); | |
2299 | __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, | |
2300 | int ref); | |
2301 | ||
2302 | __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other); | |
2303 | __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, | |
2304 | void *other); | |
2305 | ||
2306 | __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx); | |
2307 | __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, | |
2308 | size_t *pidx); | |
2309 | __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx); | |
2310 | ||
2311 | int ssl_undefined_function(SSL *s); | |
2312 | __owur int ssl_undefined_void_function(void); | |
2313 | __owur int ssl_undefined_const_function(const SSL *s); | |
2314 | __owur int ssl_get_server_cert_serverinfo(SSL *s, | |
2315 | const unsigned char **serverinfo, | |
2316 | size_t *serverinfo_length); | |
2317 | void ssl_set_masks(SSL *s); | |
2318 | __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); | |
2319 | __owur int ssl_x509err2alert(int type); | |
2320 | void ssl_sort_cipher_list(void); | |
2321 | int ssl_load_ciphers(void); | |
2322 | __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, | |
2323 | size_t len, DOWNGRADE dgrd); | |
2324 | __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen, | |
2325 | int free_pms); | |
2326 | __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm); | |
2327 | __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, | |
2328 | int genmaster); | |
2329 | __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); | |
2330 | __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl); | |
2331 | __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl); | |
2332 | ||
2333 | __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id); | |
2334 | __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname); | |
2335 | __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); | |
2336 | __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt, | |
2337 | size_t *len); | |
2338 | int ssl3_init_finished_mac(SSL *s); | |
2339 | __owur int ssl3_setup_key_block(SSL *s); | |
2340 | __owur int ssl3_change_cipher_state(SSL *s, int which); | |
2341 | void ssl3_cleanup_key_block(SSL *s); | |
2342 | __owur int ssl3_do_write(SSL *s, int type); | |
2343 | int ssl3_send_alert(SSL *s, int level, int desc); | |
2344 | __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out, | |
2345 | unsigned char *p, size_t len, | |
2346 | size_t *secret_size); | |
2347 | __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt); | |
2348 | __owur int ssl3_num_ciphers(void); | |
2349 | __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u); | |
2350 | int ssl3_renegotiate(SSL *ssl); | |
2351 | int ssl3_renegotiate_check(SSL *ssl, int initok); | |
2352 | __owur int ssl3_dispatch_alert(SSL *s); | |
2353 | __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen, | |
2354 | unsigned char *p); | |
2355 | __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len); | |
2356 | void ssl3_free_digest_list(SSL *s); | |
2357 | __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, | |
2358 | CERT_PKEY *cpk); | |
2359 | __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, | |
2360 | STACK_OF(SSL_CIPHER) *clnt, | |
2361 | STACK_OF(SSL_CIPHER) *srvr); | |
2362 | __owur int ssl3_digest_cached_records(SSL *s, int keep); | |
2363 | __owur int ssl3_new(SSL *s); | |
2364 | void ssl3_free(SSL *s); | |
2365 | __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes); | |
2366 | __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes); | |
2367 | __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written); | |
2368 | __owur int ssl3_shutdown(SSL *s); | |
2369 | int ssl3_clear(SSL *s); | |
2370 | __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); | |
2371 | __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); | |
2372 | __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void)); | |
2373 | __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void)); | |
2374 | ||
2375 | __owur int ssl3_do_change_cipher_spec(SSL *ssl); | |
2376 | __owur long ssl3_default_timeout(void); | |
2377 | ||
2378 | __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype); | |
2379 | __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype); | |
2380 | __owur int tls_setup_handshake(SSL *s); | |
2381 | __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype); | |
2382 | __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype); | |
2383 | __owur int ssl3_handshake_write(SSL *s); | |
2384 | ||
2385 | __owur int ssl_allow_compression(SSL *s); | |
2386 | ||
2387 | __owur int ssl_version_supported(const SSL *s, int version, | |
2388 | const SSL_METHOD **meth); | |
2389 | ||
2390 | __owur int ssl_set_client_hello_version(SSL *s); | |
2391 | __owur int ssl_check_version_downgrade(SSL *s); | |
2392 | __owur int ssl_set_version_bound(int method_version, int version, int *bound); | |
2393 | __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello, | |
2394 | DOWNGRADE *dgrd); | |
2395 | __owur int ssl_choose_client_version(SSL *s, int version, | |
2396 | RAW_EXTENSION *extensions); | |
2397 | __owur int ssl_get_min_max_version(const SSL *s, int *min_version, | |
2398 | int *max_version, int *real_max); | |
2399 | ||
2400 | __owur long tls1_default_timeout(void); | |
2401 | __owur int dtls1_do_write(SSL *s, int type); | |
2402 | void dtls1_set_message_header(SSL *s, | |
2403 | unsigned char mt, | |
2404 | size_t len, | |
2405 | size_t frag_off, size_t frag_len); | |
2406 | ||
2407 | int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len, | |
2408 | size_t *written); | |
2409 | ||
2410 | __owur int dtls1_read_failed(SSL *s, int code); | |
2411 | __owur int dtls1_buffer_message(SSL *s, int ccs); | |
2412 | __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found); | |
2413 | __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); | |
2414 | int dtls1_retransmit_buffered_messages(SSL *s); | |
2415 | void dtls1_clear_received_buffer(SSL *s); | |
2416 | void dtls1_clear_sent_buffer(SSL *s); | |
2417 | void dtls1_get_message_header(unsigned char *data, | |
2418 | struct hm_header_st *msg_hdr); | |
2419 | __owur long dtls1_default_timeout(void); | |
2420 | __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft); | |
2421 | __owur int dtls1_check_timeout_num(SSL *s); | |
2422 | __owur int dtls1_handle_timeout(SSL *s); | |
2423 | void dtls1_start_timer(SSL *s); | |
2424 | void dtls1_stop_timer(SSL *s); | |
2425 | __owur int dtls1_is_timer_expired(SSL *s); | |
2426 | void dtls1_double_timeout(SSL *s); | |
2427 | __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, | |
2428 | size_t cookie_len); | |
2429 | __owur size_t dtls1_min_mtu(SSL *s); | |
2430 | void dtls1_hm_fragment_free(hm_fragment *frag); | |
2431 | __owur int dtls1_query_mtu(SSL *s); | |
2432 | ||
2433 | __owur int tls1_new(SSL *s); | |
2434 | void tls1_free(SSL *s); | |
2435 | int tls1_clear(SSL *s); | |
2436 | ||
2437 | __owur int dtls1_new(SSL *s); | |
2438 | void dtls1_free(SSL *s); | |
2439 | int dtls1_clear(SSL *s); | |
2440 | long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); | |
2441 | __owur int dtls1_shutdown(SSL *s); | |
2442 | ||
2443 | __owur int dtls1_dispatch_alert(SSL *s); | |
2444 | ||
2445 | __owur int ssl_init_wbio_buffer(SSL *s); | |
2446 | int ssl_free_wbio_buffer(SSL *s); | |
2447 | ||
2448 | __owur int tls1_change_cipher_state(SSL *s, int which); | |
2449 | __owur int tls1_setup_key_block(SSL *s); | |
2450 | __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, | |
2451 | unsigned char *p); | |
2452 | __owur int tls1_generate_master_secret(SSL *s, unsigned char *out, | |
2453 | unsigned char *p, size_t len, | |
2454 | size_t *secret_size); | |
2455 | __owur int tls13_setup_key_block(SSL *s); | |
2456 | __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen, | |
2457 | unsigned char *p); | |
2458 | __owur int tls13_change_cipher_state(SSL *s, int which); | |
2459 | __owur int tls13_update_key(SSL *s, int send); | |
2460 | __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md, | |
2461 | const unsigned char *secret, | |
2462 | const unsigned char *label, size_t labellen, | |
2463 | const unsigned char *data, size_t datalen, | |
2464 | unsigned char *out, size_t outlen); | |
2465 | __owur int tls13_derive_key(SSL *s, const EVP_MD *md, | |
2466 | const unsigned char *secret, unsigned char *key, | |
2467 | size_t keylen); | |
2468 | __owur int tls13_derive_iv(SSL *s, const EVP_MD *md, | |
2469 | const unsigned char *secret, unsigned char *iv, | |
2470 | size_t ivlen); | |
2471 | __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md, | |
2472 | const unsigned char *secret, | |
2473 | unsigned char *fin, size_t finlen); | |
2474 | int tls13_generate_secret(SSL *s, const EVP_MD *md, | |
2475 | const unsigned char *prevsecret, | |
2476 | const unsigned char *insecret, | |
2477 | size_t insecretlen, | |
2478 | unsigned char *outsecret); | |
2479 | __owur int tls13_generate_handshake_secret(SSL *s, | |
2480 | const unsigned char *insecret, | |
2481 | size_t insecretlen); | |
2482 | __owur int tls13_generate_master_secret(SSL *s, unsigned char *out, | |
2483 | unsigned char *prev, size_t prevlen, | |
2484 | size_t *secret_size); | |
2485 | __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
2486 | const char *label, size_t llen, | |
2487 | const unsigned char *p, size_t plen, | |
2488 | int use_context); | |
2489 | __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
2490 | const char *label, size_t llen, | |
2491 | const unsigned char *context, | |
2492 | size_t contextlen, int use_context); | |
2493 | __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out, | |
2494 | size_t olen, const char *label, | |
2495 | size_t llen, | |
2496 | const unsigned char *context, | |
2497 | size_t contextlen); | |
2498 | __owur int tls1_alert_code(int code); | |
2499 | __owur int tls13_alert_code(int code); | |
2500 | __owur int ssl3_alert_code(int code); | |
2501 | ||
2502 | # ifndef OPENSSL_NO_EC | |
2503 | __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); | |
2504 | # endif | |
2505 | ||
2506 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); | |
2507 | ||
2508 | # ifndef OPENSSL_NO_EC | |
2509 | ||
2510 | __owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id); | |
2511 | __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves); | |
2512 | __owur uint16_t tls1_shared_group(SSL *s, int nmatch); | |
2513 | __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen, | |
2514 | int *curves, size_t ncurves); | |
2515 | __owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen, | |
2516 | const char *str); | |
2517 | void tls1_get_formatlist(SSL *s, const unsigned char **pformats, | |
2518 | size_t *num_formats); | |
2519 | __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id); | |
2520 | __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id); | |
2521 | __owur EVP_PKEY *ssl_generate_param_group(uint16_t id); | |
2522 | # endif /* OPENSSL_NO_EC */ | |
2523 | ||
2524 | __owur int tls_curve_allowed(SSL *s, uint16_t curve, int op); | |
2525 | void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, | |
2526 | size_t *pgroupslen); | |
2527 | ||
2528 | __owur int tls1_set_server_sigalgs(SSL *s); | |
2529 | ||
2530 | __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello, | |
2531 | SSL_SESSION **ret); | |
2532 | __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick, | |
2533 | size_t eticklen, | |
2534 | const unsigned char *sess_id, | |
2535 | size_t sesslen, SSL_SESSION **psess); | |
2536 | ||
2537 | __owur int tls_use_ticket(SSL *s); | |
2538 | ||
2539 | void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op); | |
2540 | ||
2541 | __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client); | |
2542 | __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen, | |
2543 | int client); | |
2544 | __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, | |
2545 | int client); | |
2546 | int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain, | |
2547 | int idx); | |
2548 | void tls1_set_cert_validity(SSL *s); | |
2549 | ||
2550 | # ifndef OPENSSL_NO_CT | |
2551 | __owur int ssl_validate_ct(SSL *s); | |
2552 | # endif | |
2553 | ||
2554 | # ifndef OPENSSL_NO_DH | |
2555 | __owur DH *ssl_get_auto_dh(SSL *s); | |
2556 | # endif | |
2557 | ||
2558 | __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee); | |
2559 | __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, | |
2560 | int vfy); | |
2561 | ||
2562 | int tls_choose_sigalg(SSL *s, int fatalerrs); | |
2563 | ||
2564 | __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); | |
2565 | void ssl_clear_hash_ctx(EVP_MD_CTX **hash); | |
2566 | __owur long ssl_get_algorithm2(SSL *s); | |
2567 | __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt, | |
2568 | const uint16_t *psig, size_t psiglen); | |
2569 | __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen); | |
2570 | __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert); | |
2571 | __owur int tls1_process_sigalgs(SSL *s); | |
2572 | __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey); | |
2573 | __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd); | |
2574 | __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs); | |
2575 | __owur int tls_check_sigalg_curve(const SSL *s, int curve); | |
2576 | __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey); | |
2577 | __owur int ssl_set_client_disabled(SSL *s); | |
2578 | __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op, int echde); | |
2579 | ||
2580 | __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, | |
2581 | size_t *hashlen); | |
2582 | __owur const EVP_MD *ssl_md(int idx); | |
2583 | __owur const EVP_MD *ssl_handshake_md(SSL *s); | |
2584 | __owur const EVP_MD *ssl_prf_md(SSL *s); | |
2585 | ||
2586 | /* | |
2587 | * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated | |
2588 | * with |ssl|, if logging is enabled. It returns one on success and zero on | |
2589 | * failure. The entry is identified by the first 8 bytes of | |
2590 | * |encrypted_premaster|. | |
2591 | */ | |
2592 | __owur int ssl_log_rsa_client_key_exchange(SSL *ssl, | |
2593 | const uint8_t *encrypted_premaster, | |
2594 | size_t encrypted_premaster_len, | |
2595 | const uint8_t *premaster, | |
2596 | size_t premaster_len); | |
2597 | ||
2598 | /* | |
2599 | * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if | |
2600 | * logging is available. It returns one on success and zero on failure. It tags | |
2601 | * the entry with |label|. | |
2602 | */ | |
2603 | __owur int ssl_log_secret(SSL *ssl, const char *label, | |
2604 | const uint8_t *secret, size_t secret_len); | |
2605 | ||
2606 | #define MASTER_SECRET_LABEL "CLIENT_RANDOM" | |
2607 | #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET" | |
2608 | #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET" | |
2609 | #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET" | |
2610 | #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0" | |
2611 | #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" | |
2612 | #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET" | |
2613 | #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET" | |
2614 | ||
2615 | /* s3_cbc.c */ | |
2616 | __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); | |
2617 | __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, | |
2618 | unsigned char *md_out, | |
2619 | size_t *md_out_size, | |
2620 | const unsigned char header[13], | |
2621 | const unsigned char *data, | |
2622 | size_t data_plus_mac_size, | |
2623 | size_t data_plus_mac_plus_padding_size, | |
2624 | const unsigned char *mac_secret, | |
2625 | size_t mac_secret_length, char is_sslv3); | |
2626 | ||
2627 | __owur int srp_generate_server_master_secret(SSL *s); | |
2628 | __owur int srp_generate_client_master_secret(SSL *s); | |
2629 | __owur int srp_verify_server_param(SSL *s); | |
2630 | ||
2631 | /* statem/statem_srvr.c */ | |
2632 | ||
2633 | __owur int send_certificate_request(SSL *s); | |
2634 | ||
2635 | /* statem/extensions_cust.c */ | |
2636 | ||
2637 | custom_ext_method *custom_ext_find(const custom_ext_methods *exts, | |
2638 | ENDPOINT role, unsigned int ext_type, | |
2639 | size_t *idx); | |
2640 | ||
2641 | void custom_ext_init(custom_ext_methods *meths); | |
2642 | ||
2643 | __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type, | |
2644 | const unsigned char *ext_data, size_t ext_size, | |
2645 | X509 *x, size_t chainidx); | |
2646 | __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x, | |
2647 | size_t chainidx, int maxversion); | |
2648 | ||
2649 | __owur int custom_exts_copy(custom_ext_methods *dst, | |
2650 | const custom_ext_methods *src); | |
2651 | __owur int custom_exts_copy_flags(custom_ext_methods *dst, | |
2652 | const custom_ext_methods *src); | |
2653 | void custom_exts_free(custom_ext_methods *exts); | |
2654 | ||
2655 | void ssl_comp_free_compression_methods_int(void); | |
2656 | ||
2657 | /* ssl_mcnf.c */ | |
2658 | void ssl_ctx_system_config(SSL_CTX *ctx); | |
2659 | ||
2660 | # else /* OPENSSL_UNIT_TEST */ | |
2661 | ||
2662 | # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer | |
2663 | # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers | |
2664 | ||
2665 | # endif | |
2666 | #endif |