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1 | /* | |
2 | * Copyright 1995-2017 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 | #include <stdio.h> | |
13 | #include "ssl_locl.h" | |
14 | #include <openssl/objects.h> | |
15 | #include <openssl/lhash.h> | |
16 | #include <openssl/x509v3.h> | |
17 | #include <openssl/rand.h> | |
18 | #include <openssl/ocsp.h> | |
19 | #include <openssl/dh.h> | |
20 | #include <openssl/engine.h> | |
21 | #include <openssl/async.h> | |
22 | #include <openssl/ct.h> | |
23 | #include "internal/cryptlib.h" | |
24 | #include "internal/rand.h" | |
25 | #include "internal/refcount.h" | |
26 | ||
27 | const char SSL_version_str[] = OPENSSL_VERSION_TEXT; | |
28 | ||
29 | SSL3_ENC_METHOD ssl3_undef_enc_method = { | |
30 | /* | |
31 | * evil casts, but these functions are only called if there's a library | |
32 | * bug | |
33 | */ | |
34 | (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function, | |
35 | (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function, | |
36 | ssl_undefined_function, | |
37 | (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *)) | |
38 | ssl_undefined_function, | |
39 | (int (*)(SSL *, int))ssl_undefined_function, | |
40 | (size_t (*)(SSL *, const char *, size_t, unsigned char *)) | |
41 | ssl_undefined_function, | |
42 | NULL, /* client_finished_label */ | |
43 | 0, /* client_finished_label_len */ | |
44 | NULL, /* server_finished_label */ | |
45 | 0, /* server_finished_label_len */ | |
46 | (int (*)(int))ssl_undefined_function, | |
47 | (int (*)(SSL *, unsigned char *, size_t, const char *, | |
48 | size_t, const unsigned char *, size_t, | |
49 | int use_context))ssl_undefined_function, | |
50 | }; | |
51 | ||
52 | struct ssl_async_args { | |
53 | SSL *s; | |
54 | void *buf; | |
55 | size_t num; | |
56 | enum { READFUNC, WRITEFUNC, OTHERFUNC } type; | |
57 | union { | |
58 | int (*func_read) (SSL *, void *, size_t, size_t *); | |
59 | int (*func_write) (SSL *, const void *, size_t, size_t *); | |
60 | int (*func_other) (SSL *); | |
61 | } f; | |
62 | }; | |
63 | ||
64 | static const struct { | |
65 | uint8_t mtype; | |
66 | uint8_t ord; | |
67 | int nid; | |
68 | } dane_mds[] = { | |
69 | { | |
70 | DANETLS_MATCHING_FULL, 0, NID_undef | |
71 | }, | |
72 | { | |
73 | DANETLS_MATCHING_2256, 1, NID_sha256 | |
74 | }, | |
75 | { | |
76 | DANETLS_MATCHING_2512, 2, NID_sha512 | |
77 | }, | |
78 | }; | |
79 | ||
80 | static int dane_ctx_enable(struct dane_ctx_st *dctx) | |
81 | { | |
82 | const EVP_MD **mdevp; | |
83 | uint8_t *mdord; | |
84 | uint8_t mdmax = DANETLS_MATCHING_LAST; | |
85 | int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */ | |
86 | size_t i; | |
87 | ||
88 | if (dctx->mdevp != NULL) | |
89 | return 1; | |
90 | ||
91 | mdevp = OPENSSL_zalloc(n * sizeof(*mdevp)); | |
92 | mdord = OPENSSL_zalloc(n * sizeof(*mdord)); | |
93 | ||
94 | if (mdord == NULL || mdevp == NULL) { | |
95 | OPENSSL_free(mdord); | |
96 | OPENSSL_free(mdevp); | |
97 | SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | /* Install default entries */ | |
102 | for (i = 0; i < OSSL_NELEM(dane_mds); ++i) { | |
103 | const EVP_MD *md; | |
104 | ||
105 | if (dane_mds[i].nid == NID_undef || | |
106 | (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL) | |
107 | continue; | |
108 | mdevp[dane_mds[i].mtype] = md; | |
109 | mdord[dane_mds[i].mtype] = dane_mds[i].ord; | |
110 | } | |
111 | ||
112 | dctx->mdevp = mdevp; | |
113 | dctx->mdord = mdord; | |
114 | dctx->mdmax = mdmax; | |
115 | ||
116 | return 1; | |
117 | } | |
118 | ||
119 | static void dane_ctx_final(struct dane_ctx_st *dctx) | |
120 | { | |
121 | OPENSSL_free(dctx->mdevp); | |
122 | dctx->mdevp = NULL; | |
123 | ||
124 | OPENSSL_free(dctx->mdord); | |
125 | dctx->mdord = NULL; | |
126 | dctx->mdmax = 0; | |
127 | } | |
128 | ||
129 | static void tlsa_free(danetls_record *t) | |
130 | { | |
131 | if (t == NULL) | |
132 | return; | |
133 | OPENSSL_free(t->data); | |
134 | EVP_PKEY_free(t->spki); | |
135 | OPENSSL_free(t); | |
136 | } | |
137 | ||
138 | static void dane_final(SSL_DANE *dane) | |
139 | { | |
140 | sk_danetls_record_pop_free(dane->trecs, tlsa_free); | |
141 | dane->trecs = NULL; | |
142 | ||
143 | sk_X509_pop_free(dane->certs, X509_free); | |
144 | dane->certs = NULL; | |
145 | ||
146 | X509_free(dane->mcert); | |
147 | dane->mcert = NULL; | |
148 | dane->mtlsa = NULL; | |
149 | dane->mdpth = -1; | |
150 | dane->pdpth = -1; | |
151 | } | |
152 | ||
153 | /* | |
154 | * dane_copy - Copy dane configuration, sans verification state. | |
155 | */ | |
156 | static int ssl_dane_dup(SSL *to, SSL *from) | |
157 | { | |
158 | int num; | |
159 | int i; | |
160 | ||
161 | if (!DANETLS_ENABLED(&from->dane)) | |
162 | return 1; | |
163 | ||
164 | dane_final(&to->dane); | |
165 | to->dane.flags = from->dane.flags; | |
166 | to->dane.dctx = &to->ctx->dane; | |
167 | to->dane.trecs = sk_danetls_record_new_null(); | |
168 | ||
169 | if (to->dane.trecs == NULL) { | |
170 | SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | num = sk_danetls_record_num(from->dane.trecs); | |
175 | for (i = 0; i < num; ++i) { | |
176 | danetls_record *t = sk_danetls_record_value(from->dane.trecs, i); | |
177 | ||
178 | if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype, | |
179 | t->data, t->dlen) <= 0) | |
180 | return 0; | |
181 | } | |
182 | return 1; | |
183 | } | |
184 | ||
185 | static int dane_mtype_set(struct dane_ctx_st *dctx, | |
186 | const EVP_MD *md, uint8_t mtype, uint8_t ord) | |
187 | { | |
188 | int i; | |
189 | ||
190 | if (mtype == DANETLS_MATCHING_FULL && md != NULL) { | |
191 | SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL); | |
192 | return 0; | |
193 | } | |
194 | ||
195 | if (mtype > dctx->mdmax) { | |
196 | const EVP_MD **mdevp; | |
197 | uint8_t *mdord; | |
198 | int n = ((int)mtype) + 1; | |
199 | ||
200 | mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp)); | |
201 | if (mdevp == NULL) { | |
202 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
203 | return -1; | |
204 | } | |
205 | dctx->mdevp = mdevp; | |
206 | ||
207 | mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord)); | |
208 | if (mdord == NULL) { | |
209 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
210 | return -1; | |
211 | } | |
212 | dctx->mdord = mdord; | |
213 | ||
214 | /* Zero-fill any gaps */ | |
215 | for (i = dctx->mdmax + 1; i < mtype; ++i) { | |
216 | mdevp[i] = NULL; | |
217 | mdord[i] = 0; | |
218 | } | |
219 | ||
220 | dctx->mdmax = mtype; | |
221 | } | |
222 | ||
223 | dctx->mdevp[mtype] = md; | |
224 | /* Coerce ordinal of disabled matching types to 0 */ | |
225 | dctx->mdord[mtype] = (md == NULL) ? 0 : ord; | |
226 | ||
227 | return 1; | |
228 | } | |
229 | ||
230 | static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype) | |
231 | { | |
232 | if (mtype > dane->dctx->mdmax) | |
233 | return NULL; | |
234 | return dane->dctx->mdevp[mtype]; | |
235 | } | |
236 | ||
237 | static int dane_tlsa_add(SSL_DANE *dane, | |
238 | uint8_t usage, | |
239 | uint8_t selector, | |
240 | uint8_t mtype, unsigned char *data, size_t dlen) | |
241 | { | |
242 | danetls_record *t; | |
243 | const EVP_MD *md = NULL; | |
244 | int ilen = (int)dlen; | |
245 | int i; | |
246 | int num; | |
247 | ||
248 | if (dane->trecs == NULL) { | |
249 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED); | |
250 | return -1; | |
251 | } | |
252 | ||
253 | if (ilen < 0 || dlen != (size_t)ilen) { | |
254 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | if (usage > DANETLS_USAGE_LAST) { | |
259 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE); | |
260 | return 0; | |
261 | } | |
262 | ||
263 | if (selector > DANETLS_SELECTOR_LAST) { | |
264 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | if (mtype != DANETLS_MATCHING_FULL) { | |
269 | md = tlsa_md_get(dane, mtype); | |
270 | if (md == NULL) { | |
271 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE); | |
272 | return 0; | |
273 | } | |
274 | } | |
275 | ||
276 | if (md != NULL && dlen != (size_t)EVP_MD_size(md)) { | |
277 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH); | |
278 | return 0; | |
279 | } | |
280 | if (!data) { | |
281 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA); | |
282 | return 0; | |
283 | } | |
284 | ||
285 | if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) { | |
286 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
287 | return -1; | |
288 | } | |
289 | ||
290 | t->usage = usage; | |
291 | t->selector = selector; | |
292 | t->mtype = mtype; | |
293 | t->data = OPENSSL_malloc(dlen); | |
294 | if (t->data == NULL) { | |
295 | tlsa_free(t); | |
296 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
297 | return -1; | |
298 | } | |
299 | memcpy(t->data, data, dlen); | |
300 | t->dlen = dlen; | |
301 | ||
302 | /* Validate and cache full certificate or public key */ | |
303 | if (mtype == DANETLS_MATCHING_FULL) { | |
304 | const unsigned char *p = data; | |
305 | X509 *cert = NULL; | |
306 | EVP_PKEY *pkey = NULL; | |
307 | ||
308 | switch (selector) { | |
309 | case DANETLS_SELECTOR_CERT: | |
310 | if (!d2i_X509(&cert, &p, ilen) || p < data || | |
311 | dlen != (size_t)(p - data)) { | |
312 | tlsa_free(t); | |
313 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
314 | return 0; | |
315 | } | |
316 | if (X509_get0_pubkey(cert) == NULL) { | |
317 | tlsa_free(t); | |
318 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
319 | return 0; | |
320 | } | |
321 | ||
322 | if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) { | |
323 | X509_free(cert); | |
324 | break; | |
325 | } | |
326 | ||
327 | /* | |
328 | * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA | |
329 | * records that contain full certificates of trust-anchors that are | |
330 | * not present in the wire chain. For usage PKIX-TA(0), we augment | |
331 | * the chain with untrusted Full(0) certificates from DNS, in case | |
332 | * they are missing from the chain. | |
333 | */ | |
334 | if ((dane->certs == NULL && | |
335 | (dane->certs = sk_X509_new_null()) == NULL) || | |
336 | !sk_X509_push(dane->certs, cert)) { | |
337 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
338 | X509_free(cert); | |
339 | tlsa_free(t); | |
340 | return -1; | |
341 | } | |
342 | break; | |
343 | ||
344 | case DANETLS_SELECTOR_SPKI: | |
345 | if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data || | |
346 | dlen != (size_t)(p - data)) { | |
347 | tlsa_free(t); | |
348 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY); | |
349 | return 0; | |
350 | } | |
351 | ||
352 | /* | |
353 | * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA | |
354 | * records that contain full bare keys of trust-anchors that are | |
355 | * not present in the wire chain. | |
356 | */ | |
357 | if (usage == DANETLS_USAGE_DANE_TA) | |
358 | t->spki = pkey; | |
359 | else | |
360 | EVP_PKEY_free(pkey); | |
361 | break; | |
362 | } | |
363 | } | |
364 | ||
365 | /*- | |
366 | * Find the right insertion point for the new record. | |
367 | * | |
368 | * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that | |
369 | * they can be processed first, as they require no chain building, and no | |
370 | * expiration or hostname checks. Because DANE-EE(3) is numerically | |
371 | * largest, this is accomplished via descending sort by "usage". | |
372 | * | |
373 | * We also sort in descending order by matching ordinal to simplify | |
374 | * the implementation of digest agility in the verification code. | |
375 | * | |
376 | * The choice of order for the selector is not significant, so we | |
377 | * use the same descending order for consistency. | |
378 | */ | |
379 | num = sk_danetls_record_num(dane->trecs); | |
380 | for (i = 0; i < num; ++i) { | |
381 | danetls_record *rec = sk_danetls_record_value(dane->trecs, i); | |
382 | ||
383 | if (rec->usage > usage) | |
384 | continue; | |
385 | if (rec->usage < usage) | |
386 | break; | |
387 | if (rec->selector > selector) | |
388 | continue; | |
389 | if (rec->selector < selector) | |
390 | break; | |
391 | if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype]) | |
392 | continue; | |
393 | break; | |
394 | } | |
395 | ||
396 | if (!sk_danetls_record_insert(dane->trecs, t, i)) { | |
397 | tlsa_free(t); | |
398 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
399 | return -1; | |
400 | } | |
401 | dane->umask |= DANETLS_USAGE_BIT(usage); | |
402 | ||
403 | return 1; | |
404 | } | |
405 | ||
406 | /* | |
407 | * Return 0 if there is only one version configured and it was disabled | |
408 | * at configure time. Return 1 otherwise. | |
409 | */ | |
410 | static int ssl_check_allowed_versions(int min_version, int max_version) | |
411 | { | |
412 | int minisdtls = 0, maxisdtls = 0; | |
413 | ||
414 | /* Figure out if we're doing DTLS versions or TLS versions */ | |
415 | if (min_version == DTLS1_BAD_VER | |
416 | || min_version >> 8 == DTLS1_VERSION_MAJOR) | |
417 | minisdtls = 1; | |
418 | if (max_version == DTLS1_BAD_VER | |
419 | || max_version >> 8 == DTLS1_VERSION_MAJOR) | |
420 | maxisdtls = 1; | |
421 | /* A wildcard version of 0 could be DTLS or TLS. */ | |
422 | if ((minisdtls && !maxisdtls && max_version != 0) | |
423 | || (maxisdtls && !minisdtls && min_version != 0)) { | |
424 | /* Mixing DTLS and TLS versions will lead to sadness; deny it. */ | |
425 | return 0; | |
426 | } | |
427 | ||
428 | if (minisdtls || maxisdtls) { | |
429 | /* Do DTLS version checks. */ | |
430 | if (min_version == 0) | |
431 | /* Ignore DTLS1_BAD_VER */ | |
432 | min_version = DTLS1_VERSION; | |
433 | if (max_version == 0) | |
434 | max_version = DTLS1_2_VERSION; | |
435 | #ifdef OPENSSL_NO_DTLS1_2 | |
436 | if (max_version == DTLS1_2_VERSION) | |
437 | max_version = DTLS1_VERSION; | |
438 | #endif | |
439 | #ifdef OPENSSL_NO_DTLS1 | |
440 | if (min_version == DTLS1_VERSION) | |
441 | min_version = DTLS1_2_VERSION; | |
442 | #endif | |
443 | /* Done massaging versions; do the check. */ | |
444 | if (0 | |
445 | #ifdef OPENSSL_NO_DTLS1 | |
446 | || (DTLS_VERSION_GE(min_version, DTLS1_VERSION) | |
447 | && DTLS_VERSION_GE(DTLS1_VERSION, max_version)) | |
448 | #endif | |
449 | #ifdef OPENSSL_NO_DTLS1_2 | |
450 | || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION) | |
451 | && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version)) | |
452 | #endif | |
453 | ) | |
454 | return 0; | |
455 | } else { | |
456 | /* Regular TLS version checks. */ | |
457 | if (min_version == 0) | |
458 | min_version = SSL3_VERSION; | |
459 | if (max_version == 0) | |
460 | max_version = TLS1_3_VERSION; | |
461 | #ifdef OPENSSL_NO_TLS1_3 | |
462 | if (max_version == TLS1_3_VERSION) | |
463 | max_version = TLS1_2_VERSION; | |
464 | #endif | |
465 | #ifdef OPENSSL_NO_TLS1_2 | |
466 | if (max_version == TLS1_2_VERSION) | |
467 | max_version = TLS1_1_VERSION; | |
468 | #endif | |
469 | #ifdef OPENSSL_NO_TLS1_1 | |
470 | if (max_version == TLS1_1_VERSION) | |
471 | max_version = TLS1_VERSION; | |
472 | #endif | |
473 | #ifdef OPENSSL_NO_TLS1 | |
474 | if (max_version == TLS1_VERSION) | |
475 | max_version = SSL3_VERSION; | |
476 | #endif | |
477 | #ifdef OPENSSL_NO_SSL3 | |
478 | if (min_version == SSL3_VERSION) | |
479 | min_version = TLS1_VERSION; | |
480 | #endif | |
481 | #ifdef OPENSSL_NO_TLS1 | |
482 | if (min_version == TLS1_VERSION) | |
483 | min_version = TLS1_1_VERSION; | |
484 | #endif | |
485 | #ifdef OPENSSL_NO_TLS1_1 | |
486 | if (min_version == TLS1_1_VERSION) | |
487 | min_version = TLS1_2_VERSION; | |
488 | #endif | |
489 | #ifdef OPENSSL_NO_TLS1_2 | |
490 | if (min_version == TLS1_2_VERSION) | |
491 | min_version = TLS1_3_VERSION; | |
492 | #endif | |
493 | /* Done massaging versions; do the check. */ | |
494 | if (0 | |
495 | #ifdef OPENSSL_NO_SSL3 | |
496 | || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version) | |
497 | #endif | |
498 | #ifdef OPENSSL_NO_TLS1 | |
499 | || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version) | |
500 | #endif | |
501 | #ifdef OPENSSL_NO_TLS1_1 | |
502 | || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version) | |
503 | #endif | |
504 | #ifdef OPENSSL_NO_TLS1_2 | |
505 | || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version) | |
506 | #endif | |
507 | #ifdef OPENSSL_NO_TLS1_3 | |
508 | || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version) | |
509 | #endif | |
510 | ) | |
511 | return 0; | |
512 | } | |
513 | return 1; | |
514 | } | |
515 | ||
516 | static void clear_ciphers(SSL *s) | |
517 | { | |
518 | /* clear the current cipher */ | |
519 | ssl_clear_cipher_ctx(s); | |
520 | ssl_clear_hash_ctx(&s->read_hash); | |
521 | ssl_clear_hash_ctx(&s->write_hash); | |
522 | } | |
523 | ||
524 | int SSL_clear(SSL *s) | |
525 | { | |
526 | if (s->method == NULL) { | |
527 | SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); | |
528 | return 0; | |
529 | } | |
530 | ||
531 | if (ssl_clear_bad_session(s)) { | |
532 | SSL_SESSION_free(s->session); | |
533 | s->session = NULL; | |
534 | } | |
535 | SSL_SESSION_free(s->psksession); | |
536 | s->psksession = NULL; | |
537 | OPENSSL_free(s->psksession_id); | |
538 | s->psksession_id = NULL; | |
539 | s->psksession_id_len = 0; | |
540 | ||
541 | s->error = 0; | |
542 | s->hit = 0; | |
543 | s->shutdown = 0; | |
544 | ||
545 | if (s->renegotiate) { | |
546 | SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); | |
547 | return 0; | |
548 | } | |
549 | ||
550 | ossl_statem_clear(s); | |
551 | ||
552 | s->version = s->method->version; | |
553 | s->client_version = s->version; | |
554 | s->rwstate = SSL_NOTHING; | |
555 | ||
556 | BUF_MEM_free(s->init_buf); | |
557 | s->init_buf = NULL; | |
558 | clear_ciphers(s); | |
559 | s->first_packet = 0; | |
560 | ||
561 | s->key_update = SSL_KEY_UPDATE_NONE; | |
562 | ||
563 | /* Reset DANE verification result state */ | |
564 | s->dane.mdpth = -1; | |
565 | s->dane.pdpth = -1; | |
566 | X509_free(s->dane.mcert); | |
567 | s->dane.mcert = NULL; | |
568 | s->dane.mtlsa = NULL; | |
569 | ||
570 | /* Clear the verification result peername */ | |
571 | X509_VERIFY_PARAM_move_peername(s->param, NULL); | |
572 | ||
573 | /* | |
574 | * Check to see if we were changed into a different method, if so, revert | |
575 | * back. | |
576 | */ | |
577 | if (s->method != s->ctx->method) { | |
578 | s->method->ssl_free(s); | |
579 | s->method = s->ctx->method; | |
580 | if (!s->method->ssl_new(s)) | |
581 | return 0; | |
582 | } else { | |
583 | if (!s->method->ssl_clear(s)) | |
584 | return 0; | |
585 | } | |
586 | ||
587 | RECORD_LAYER_clear(&s->rlayer); | |
588 | ||
589 | return 1; | |
590 | } | |
591 | ||
592 | /** Used to change an SSL_CTXs default SSL method type */ | |
593 | int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) | |
594 | { | |
595 | STACK_OF(SSL_CIPHER) *sk; | |
596 | ||
597 | ctx->method = meth; | |
598 | ||
599 | sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), | |
600 | &(ctx->cipher_list_by_id), | |
601 | SSL_DEFAULT_CIPHER_LIST, ctx->cert); | |
602 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { | |
603 | SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); | |
604 | return (0); | |
605 | } | |
606 | return (1); | |
607 | } | |
608 | ||
609 | SSL *SSL_new(SSL_CTX *ctx) | |
610 | { | |
611 | SSL *s; | |
612 | ||
613 | if (ctx == NULL) { | |
614 | SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); | |
615 | return (NULL); | |
616 | } | |
617 | if (ctx->method == NULL) { | |
618 | SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); | |
619 | return (NULL); | |
620 | } | |
621 | ||
622 | s = OPENSSL_zalloc(sizeof(*s)); | |
623 | if (s == NULL) | |
624 | goto err; | |
625 | ||
626 | s->lock = CRYPTO_THREAD_lock_new(); | |
627 | if (s->lock == NULL) | |
628 | goto err; | |
629 | ||
630 | /* | |
631 | * If not using the standard RAND (say for fuzzing), then don't use a | |
632 | * chained DRBG. | |
633 | */ | |
634 | if (RAND_get_rand_method() == RAND_OpenSSL()) { | |
635 | s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF, | |
636 | RAND_DRBG_get0_global()); | |
637 | if (s->drbg == NULL | |
638 | || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) { | |
639 | CRYPTO_THREAD_lock_free(s->lock); | |
640 | goto err; | |
641 | } | |
642 | } | |
643 | ||
644 | RECORD_LAYER_init(&s->rlayer, s); | |
645 | ||
646 | s->options = ctx->options; | |
647 | s->dane.flags = ctx->dane.flags; | |
648 | s->min_proto_version = ctx->min_proto_version; | |
649 | s->max_proto_version = ctx->max_proto_version; | |
650 | s->mode = ctx->mode; | |
651 | s->max_cert_list = ctx->max_cert_list; | |
652 | s->references = 1; | |
653 | s->max_early_data = ctx->max_early_data; | |
654 | ||
655 | /* | |
656 | * Earlier library versions used to copy the pointer to the CERT, not | |
657 | * its contents; only when setting new parameters for the per-SSL | |
658 | * copy, ssl_cert_new would be called (and the direct reference to | |
659 | * the per-SSL_CTX settings would be lost, but those still were | |
660 | * indirectly accessed for various purposes, and for that reason they | |
661 | * used to be known as s->ctx->default_cert). Now we don't look at the | |
662 | * SSL_CTX's CERT after having duplicated it once. | |
663 | */ | |
664 | s->cert = ssl_cert_dup(ctx->cert); | |
665 | if (s->cert == NULL) | |
666 | goto err; | |
667 | ||
668 | RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead); | |
669 | s->msg_callback = ctx->msg_callback; | |
670 | s->msg_callback_arg = ctx->msg_callback_arg; | |
671 | s->verify_mode = ctx->verify_mode; | |
672 | s->not_resumable_session_cb = ctx->not_resumable_session_cb; | |
673 | s->record_padding_cb = ctx->record_padding_cb; | |
674 | s->record_padding_arg = ctx->record_padding_arg; | |
675 | s->block_padding = ctx->block_padding; | |
676 | s->sid_ctx_length = ctx->sid_ctx_length; | |
677 | if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx)) | |
678 | goto err; | |
679 | memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); | |
680 | s->verify_callback = ctx->default_verify_callback; | |
681 | s->generate_session_id = ctx->generate_session_id; | |
682 | ||
683 | s->param = X509_VERIFY_PARAM_new(); | |
684 | if (s->param == NULL) | |
685 | goto err; | |
686 | X509_VERIFY_PARAM_inherit(s->param, ctx->param); | |
687 | s->quiet_shutdown = ctx->quiet_shutdown; | |
688 | s->max_send_fragment = ctx->max_send_fragment; | |
689 | s->split_send_fragment = ctx->split_send_fragment; | |
690 | s->max_pipelines = ctx->max_pipelines; | |
691 | if (s->max_pipelines > 1) | |
692 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
693 | if (ctx->default_read_buf_len > 0) | |
694 | SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len); | |
695 | ||
696 | SSL_CTX_up_ref(ctx); | |
697 | s->ctx = ctx; | |
698 | s->ext.debug_cb = 0; | |
699 | s->ext.debug_arg = NULL; | |
700 | s->ext.ticket_expected = 0; | |
701 | s->ext.status_type = ctx->ext.status_type; | |
702 | s->ext.status_expected = 0; | |
703 | s->ext.ocsp.ids = NULL; | |
704 | s->ext.ocsp.exts = NULL; | |
705 | s->ext.ocsp.resp = NULL; | |
706 | s->ext.ocsp.resp_len = 0; | |
707 | SSL_CTX_up_ref(ctx); | |
708 | s->session_ctx = ctx; | |
709 | #ifndef OPENSSL_NO_EC | |
710 | if (ctx->ext.ecpointformats) { | |
711 | s->ext.ecpointformats = | |
712 | OPENSSL_memdup(ctx->ext.ecpointformats, | |
713 | ctx->ext.ecpointformats_len); | |
714 | if (!s->ext.ecpointformats) | |
715 | goto err; | |
716 | s->ext.ecpointformats_len = | |
717 | ctx->ext.ecpointformats_len; | |
718 | } | |
719 | if (ctx->ext.supportedgroups) { | |
720 | s->ext.supportedgroups = | |
721 | OPENSSL_memdup(ctx->ext.supportedgroups, | |
722 | ctx->ext.supportedgroups_len | |
723 | * sizeof(*ctx->ext.supportedgroups)); | |
724 | if (!s->ext.supportedgroups) | |
725 | goto err; | |
726 | s->ext.supportedgroups_len = ctx->ext.supportedgroups_len; | |
727 | } | |
728 | #endif | |
729 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
730 | s->ext.npn = NULL; | |
731 | #endif | |
732 | ||
733 | if (s->ctx->ext.alpn) { | |
734 | s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len); | |
735 | if (s->ext.alpn == NULL) | |
736 | goto err; | |
737 | memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len); | |
738 | s->ext.alpn_len = s->ctx->ext.alpn_len; | |
739 | } | |
740 | ||
741 | s->verified_chain = NULL; | |
742 | s->verify_result = X509_V_OK; | |
743 | ||
744 | s->default_passwd_callback = ctx->default_passwd_callback; | |
745 | s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata; | |
746 | ||
747 | s->method = ctx->method; | |
748 | ||
749 | s->key_update = SSL_KEY_UPDATE_NONE; | |
750 | ||
751 | if (!s->method->ssl_new(s)) | |
752 | goto err; | |
753 | ||
754 | s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; | |
755 | ||
756 | if (!SSL_clear(s)) | |
757 | goto err; | |
758 | ||
759 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data)) | |
760 | goto err; | |
761 | ||
762 | #ifndef OPENSSL_NO_PSK | |
763 | s->psk_client_callback = ctx->psk_client_callback; | |
764 | s->psk_server_callback = ctx->psk_server_callback; | |
765 | #endif | |
766 | s->psk_find_session_cb = ctx->psk_find_session_cb; | |
767 | s->psk_use_session_cb = ctx->psk_use_session_cb; | |
768 | ||
769 | s->job = NULL; | |
770 | ||
771 | #ifndef OPENSSL_NO_CT | |
772 | if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback, | |
773 | ctx->ct_validation_callback_arg)) | |
774 | goto err; | |
775 | #endif | |
776 | ||
777 | return s; | |
778 | err: | |
779 | SSL_free(s); | |
780 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
781 | return NULL; | |
782 | } | |
783 | ||
784 | int SSL_is_dtls(const SSL *s) | |
785 | { | |
786 | return SSL_IS_DTLS(s) ? 1 : 0; | |
787 | } | |
788 | ||
789 | int SSL_up_ref(SSL *s) | |
790 | { | |
791 | int i; | |
792 | ||
793 | if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0) | |
794 | return 0; | |
795 | ||
796 | REF_PRINT_COUNT("SSL", s); | |
797 | REF_ASSERT_ISNT(i < 2); | |
798 | return ((i > 1) ? 1 : 0); | |
799 | } | |
800 | ||
801 | int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, | |
802 | unsigned int sid_ctx_len) | |
803 | { | |
804 | if (sid_ctx_len > sizeof ctx->sid_ctx) { | |
805 | SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, | |
806 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
807 | return 0; | |
808 | } | |
809 | ctx->sid_ctx_length = sid_ctx_len; | |
810 | memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); | |
811 | ||
812 | return 1; | |
813 | } | |
814 | ||
815 | int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, | |
816 | unsigned int sid_ctx_len) | |
817 | { | |
818 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
819 | SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, | |
820 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
821 | return 0; | |
822 | } | |
823 | ssl->sid_ctx_length = sid_ctx_len; | |
824 | memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); | |
825 | ||
826 | return 1; | |
827 | } | |
828 | ||
829 | int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) | |
830 | { | |
831 | CRYPTO_THREAD_write_lock(ctx->lock); | |
832 | ctx->generate_session_id = cb; | |
833 | CRYPTO_THREAD_unlock(ctx->lock); | |
834 | return 1; | |
835 | } | |
836 | ||
837 | int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) | |
838 | { | |
839 | CRYPTO_THREAD_write_lock(ssl->lock); | |
840 | ssl->generate_session_id = cb; | |
841 | CRYPTO_THREAD_unlock(ssl->lock); | |
842 | return 1; | |
843 | } | |
844 | ||
845 | int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, | |
846 | unsigned int id_len) | |
847 | { | |
848 | /* | |
849 | * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how | |
850 | * we can "construct" a session to give us the desired check - i.e. to | |
851 | * find if there's a session in the hash table that would conflict with | |
852 | * any new session built out of this id/id_len and the ssl_version in use | |
853 | * by this SSL. | |
854 | */ | |
855 | SSL_SESSION r, *p; | |
856 | ||
857 | if (id_len > sizeof r.session_id) | |
858 | return 0; | |
859 | ||
860 | r.ssl_version = ssl->version; | |
861 | r.session_id_length = id_len; | |
862 | memcpy(r.session_id, id, id_len); | |
863 | ||
864 | CRYPTO_THREAD_read_lock(ssl->session_ctx->lock); | |
865 | p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r); | |
866 | CRYPTO_THREAD_unlock(ssl->session_ctx->lock); | |
867 | return (p != NULL); | |
868 | } | |
869 | ||
870 | int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) | |
871 | { | |
872 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
873 | } | |
874 | ||
875 | int SSL_set_purpose(SSL *s, int purpose) | |
876 | { | |
877 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
878 | } | |
879 | ||
880 | int SSL_CTX_set_trust(SSL_CTX *s, int trust) | |
881 | { | |
882 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
883 | } | |
884 | ||
885 | int SSL_set_trust(SSL *s, int trust) | |
886 | { | |
887 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
888 | } | |
889 | ||
890 | int SSL_set1_host(SSL *s, const char *hostname) | |
891 | { | |
892 | return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); | |
893 | } | |
894 | ||
895 | int SSL_add1_host(SSL *s, const char *hostname) | |
896 | { | |
897 | return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0); | |
898 | } | |
899 | ||
900 | void SSL_set_hostflags(SSL *s, unsigned int flags) | |
901 | { | |
902 | X509_VERIFY_PARAM_set_hostflags(s->param, flags); | |
903 | } | |
904 | ||
905 | const char *SSL_get0_peername(SSL *s) | |
906 | { | |
907 | return X509_VERIFY_PARAM_get0_peername(s->param); | |
908 | } | |
909 | ||
910 | int SSL_CTX_dane_enable(SSL_CTX *ctx) | |
911 | { | |
912 | return dane_ctx_enable(&ctx->dane); | |
913 | } | |
914 | ||
915 | unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags) | |
916 | { | |
917 | unsigned long orig = ctx->dane.flags; | |
918 | ||
919 | ctx->dane.flags |= flags; | |
920 | return orig; | |
921 | } | |
922 | ||
923 | unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags) | |
924 | { | |
925 | unsigned long orig = ctx->dane.flags; | |
926 | ||
927 | ctx->dane.flags &= ~flags; | |
928 | return orig; | |
929 | } | |
930 | ||
931 | int SSL_dane_enable(SSL *s, const char *basedomain) | |
932 | { | |
933 | SSL_DANE *dane = &s->dane; | |
934 | ||
935 | if (s->ctx->dane.mdmax == 0) { | |
936 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED); | |
937 | return 0; | |
938 | } | |
939 | if (dane->trecs != NULL) { | |
940 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED); | |
941 | return 0; | |
942 | } | |
943 | ||
944 | /* | |
945 | * Default SNI name. This rejects empty names, while set1_host below | |
946 | * accepts them and disables host name checks. To avoid side-effects with | |
947 | * invalid input, set the SNI name first. | |
948 | */ | |
949 | if (s->ext.hostname == NULL) { | |
950 | if (!SSL_set_tlsext_host_name(s, basedomain)) { | |
951 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
952 | return -1; | |
953 | } | |
954 | } | |
955 | ||
956 | /* Primary RFC6125 reference identifier */ | |
957 | if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) { | |
958 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
959 | return -1; | |
960 | } | |
961 | ||
962 | dane->mdpth = -1; | |
963 | dane->pdpth = -1; | |
964 | dane->dctx = &s->ctx->dane; | |
965 | dane->trecs = sk_danetls_record_new_null(); | |
966 | ||
967 | if (dane->trecs == NULL) { | |
968 | SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE); | |
969 | return -1; | |
970 | } | |
971 | return 1; | |
972 | } | |
973 | ||
974 | unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags) | |
975 | { | |
976 | unsigned long orig = ssl->dane.flags; | |
977 | ||
978 | ssl->dane.flags |= flags; | |
979 | return orig; | |
980 | } | |
981 | ||
982 | unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags) | |
983 | { | |
984 | unsigned long orig = ssl->dane.flags; | |
985 | ||
986 | ssl->dane.flags &= ~flags; | |
987 | return orig; | |
988 | } | |
989 | ||
990 | int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki) | |
991 | { | |
992 | SSL_DANE *dane = &s->dane; | |
993 | ||
994 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
995 | return -1; | |
996 | if (dane->mtlsa) { | |
997 | if (mcert) | |
998 | *mcert = dane->mcert; | |
999 | if (mspki) | |
1000 | *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL; | |
1001 | } | |
1002 | return dane->mdpth; | |
1003 | } | |
1004 | ||
1005 | int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector, | |
1006 | uint8_t *mtype, unsigned const char **data, size_t *dlen) | |
1007 | { | |
1008 | SSL_DANE *dane = &s->dane; | |
1009 | ||
1010 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
1011 | return -1; | |
1012 | if (dane->mtlsa) { | |
1013 | if (usage) | |
1014 | *usage = dane->mtlsa->usage; | |
1015 | if (selector) | |
1016 | *selector = dane->mtlsa->selector; | |
1017 | if (mtype) | |
1018 | *mtype = dane->mtlsa->mtype; | |
1019 | if (data) | |
1020 | *data = dane->mtlsa->data; | |
1021 | if (dlen) | |
1022 | *dlen = dane->mtlsa->dlen; | |
1023 | } | |
1024 | return dane->mdpth; | |
1025 | } | |
1026 | ||
1027 | SSL_DANE *SSL_get0_dane(SSL *s) | |
1028 | { | |
1029 | return &s->dane; | |
1030 | } | |
1031 | ||
1032 | int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector, | |
1033 | uint8_t mtype, unsigned char *data, size_t dlen) | |
1034 | { | |
1035 | return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen); | |
1036 | } | |
1037 | ||
1038 | int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, | |
1039 | uint8_t ord) | |
1040 | { | |
1041 | return dane_mtype_set(&ctx->dane, md, mtype, ord); | |
1042 | } | |
1043 | ||
1044 | int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) | |
1045 | { | |
1046 | return X509_VERIFY_PARAM_set1(ctx->param, vpm); | |
1047 | } | |
1048 | ||
1049 | int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) | |
1050 | { | |
1051 | return X509_VERIFY_PARAM_set1(ssl->param, vpm); | |
1052 | } | |
1053 | ||
1054 | X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) | |
1055 | { | |
1056 | return ctx->param; | |
1057 | } | |
1058 | ||
1059 | X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) | |
1060 | { | |
1061 | return ssl->param; | |
1062 | } | |
1063 | ||
1064 | void SSL_certs_clear(SSL *s) | |
1065 | { | |
1066 | ssl_cert_clear_certs(s->cert); | |
1067 | } | |
1068 | ||
1069 | void SSL_free(SSL *s) | |
1070 | { | |
1071 | int i; | |
1072 | ||
1073 | if (s == NULL) | |
1074 | return; | |
1075 | ||
1076 | CRYPTO_DOWN_REF(&s->references, &i, s->lock); | |
1077 | REF_PRINT_COUNT("SSL", s); | |
1078 | if (i > 0) | |
1079 | return; | |
1080 | REF_ASSERT_ISNT(i < 0); | |
1081 | ||
1082 | X509_VERIFY_PARAM_free(s->param); | |
1083 | dane_final(&s->dane); | |
1084 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); | |
1085 | ||
1086 | /* Ignore return value */ | |
1087 | ssl_free_wbio_buffer(s); | |
1088 | ||
1089 | BIO_free_all(s->wbio); | |
1090 | BIO_free_all(s->rbio); | |
1091 | ||
1092 | BUF_MEM_free(s->init_buf); | |
1093 | ||
1094 | /* add extra stuff */ | |
1095 | sk_SSL_CIPHER_free(s->cipher_list); | |
1096 | sk_SSL_CIPHER_free(s->cipher_list_by_id); | |
1097 | ||
1098 | /* Make the next call work :-) */ | |
1099 | if (s->session != NULL) { | |
1100 | ssl_clear_bad_session(s); | |
1101 | SSL_SESSION_free(s->session); | |
1102 | } | |
1103 | SSL_SESSION_free(s->psksession); | |
1104 | OPENSSL_free(s->psksession_id); | |
1105 | ||
1106 | clear_ciphers(s); | |
1107 | ||
1108 | ssl_cert_free(s->cert); | |
1109 | /* Free up if allocated */ | |
1110 | ||
1111 | OPENSSL_free(s->ext.hostname); | |
1112 | SSL_CTX_free(s->session_ctx); | |
1113 | #ifndef OPENSSL_NO_EC | |
1114 | OPENSSL_free(s->ext.ecpointformats); | |
1115 | OPENSSL_free(s->ext.supportedgroups); | |
1116 | #endif /* OPENSSL_NO_EC */ | |
1117 | sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free); | |
1118 | #ifndef OPENSSL_NO_OCSP | |
1119 | sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free); | |
1120 | #endif | |
1121 | #ifndef OPENSSL_NO_CT | |
1122 | SCT_LIST_free(s->scts); | |
1123 | OPENSSL_free(s->ext.scts); | |
1124 | #endif | |
1125 | OPENSSL_free(s->ext.ocsp.resp); | |
1126 | OPENSSL_free(s->ext.alpn); | |
1127 | OPENSSL_free(s->ext.tls13_cookie); | |
1128 | OPENSSL_free(s->clienthello); | |
1129 | ||
1130 | sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free); | |
1131 | ||
1132 | sk_X509_pop_free(s->verified_chain, X509_free); | |
1133 | ||
1134 | if (s->method != NULL) | |
1135 | s->method->ssl_free(s); | |
1136 | ||
1137 | RECORD_LAYER_release(&s->rlayer); | |
1138 | ||
1139 | SSL_CTX_free(s->ctx); | |
1140 | ||
1141 | ASYNC_WAIT_CTX_free(s->waitctx); | |
1142 | ||
1143 | #if !defined(OPENSSL_NO_NEXTPROTONEG) | |
1144 | OPENSSL_free(s->ext.npn); | |
1145 | #endif | |
1146 | ||
1147 | #ifndef OPENSSL_NO_SRTP | |
1148 | sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); | |
1149 | #endif | |
1150 | ||
1151 | RAND_DRBG_free(s->drbg); | |
1152 | CRYPTO_THREAD_lock_free(s->lock); | |
1153 | ||
1154 | OPENSSL_free(s); | |
1155 | } | |
1156 | ||
1157 | void SSL_set0_rbio(SSL *s, BIO *rbio) | |
1158 | { | |
1159 | BIO_free_all(s->rbio); | |
1160 | s->rbio = rbio; | |
1161 | } | |
1162 | ||
1163 | void SSL_set0_wbio(SSL *s, BIO *wbio) | |
1164 | { | |
1165 | /* | |
1166 | * If the output buffering BIO is still in place, remove it | |
1167 | */ | |
1168 | if (s->bbio != NULL) | |
1169 | s->wbio = BIO_pop(s->wbio); | |
1170 | ||
1171 | BIO_free_all(s->wbio); | |
1172 | s->wbio = wbio; | |
1173 | ||
1174 | /* Re-attach |bbio| to the new |wbio|. */ | |
1175 | if (s->bbio != NULL) | |
1176 | s->wbio = BIO_push(s->bbio, s->wbio); | |
1177 | } | |
1178 | ||
1179 | void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) | |
1180 | { | |
1181 | /* | |
1182 | * For historical reasons, this function has many different cases in | |
1183 | * ownership handling. | |
1184 | */ | |
1185 | ||
1186 | /* If nothing has changed, do nothing */ | |
1187 | if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s)) | |
1188 | return; | |
1189 | ||
1190 | /* | |
1191 | * If the two arguments are equal then one fewer reference is granted by the | |
1192 | * caller than we want to take | |
1193 | */ | |
1194 | if (rbio != NULL && rbio == wbio) | |
1195 | BIO_up_ref(rbio); | |
1196 | ||
1197 | /* | |
1198 | * If only the wbio is changed only adopt one reference. | |
1199 | */ | |
1200 | if (rbio == SSL_get_rbio(s)) { | |
1201 | SSL_set0_wbio(s, wbio); | |
1202 | return; | |
1203 | } | |
1204 | /* | |
1205 | * There is an asymmetry here for historical reasons. If only the rbio is | |
1206 | * changed AND the rbio and wbio were originally different, then we only | |
1207 | * adopt one reference. | |
1208 | */ | |
1209 | if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) { | |
1210 | SSL_set0_rbio(s, rbio); | |
1211 | return; | |
1212 | } | |
1213 | ||
1214 | /* Otherwise, adopt both references. */ | |
1215 | SSL_set0_rbio(s, rbio); | |
1216 | SSL_set0_wbio(s, wbio); | |
1217 | } | |
1218 | ||
1219 | BIO *SSL_get_rbio(const SSL *s) | |
1220 | { | |
1221 | return s->rbio; | |
1222 | } | |
1223 | ||
1224 | BIO *SSL_get_wbio(const SSL *s) | |
1225 | { | |
1226 | if (s->bbio != NULL) { | |
1227 | /* | |
1228 | * If |bbio| is active, the true caller-configured BIO is its | |
1229 | * |next_bio|. | |
1230 | */ | |
1231 | return BIO_next(s->bbio); | |
1232 | } | |
1233 | return s->wbio; | |
1234 | } | |
1235 | ||
1236 | int SSL_get_fd(const SSL *s) | |
1237 | { | |
1238 | return SSL_get_rfd(s); | |
1239 | } | |
1240 | ||
1241 | int SSL_get_rfd(const SSL *s) | |
1242 | { | |
1243 | int ret = -1; | |
1244 | BIO *b, *r; | |
1245 | ||
1246 | b = SSL_get_rbio(s); | |
1247 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1248 | if (r != NULL) | |
1249 | BIO_get_fd(r, &ret); | |
1250 | return (ret); | |
1251 | } | |
1252 | ||
1253 | int SSL_get_wfd(const SSL *s) | |
1254 | { | |
1255 | int ret = -1; | |
1256 | BIO *b, *r; | |
1257 | ||
1258 | b = SSL_get_wbio(s); | |
1259 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1260 | if (r != NULL) | |
1261 | BIO_get_fd(r, &ret); | |
1262 | return (ret); | |
1263 | } | |
1264 | ||
1265 | #ifndef OPENSSL_NO_SOCK | |
1266 | int SSL_set_fd(SSL *s, int fd) | |
1267 | { | |
1268 | int ret = 0; | |
1269 | BIO *bio = NULL; | |
1270 | ||
1271 | bio = BIO_new(BIO_s_socket()); | |
1272 | ||
1273 | if (bio == NULL) { | |
1274 | SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); | |
1275 | goto err; | |
1276 | } | |
1277 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1278 | SSL_set_bio(s, bio, bio); | |
1279 | ret = 1; | |
1280 | err: | |
1281 | return (ret); | |
1282 | } | |
1283 | ||
1284 | int SSL_set_wfd(SSL *s, int fd) | |
1285 | { | |
1286 | BIO *rbio = SSL_get_rbio(s); | |
1287 | ||
1288 | if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET | |
1289 | || (int)BIO_get_fd(rbio, NULL) != fd) { | |
1290 | BIO *bio = BIO_new(BIO_s_socket()); | |
1291 | ||
1292 | if (bio == NULL) { | |
1293 | SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); | |
1294 | return 0; | |
1295 | } | |
1296 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1297 | SSL_set0_wbio(s, bio); | |
1298 | } else { | |
1299 | BIO_up_ref(rbio); | |
1300 | SSL_set0_wbio(s, rbio); | |
1301 | } | |
1302 | return 1; | |
1303 | } | |
1304 | ||
1305 | int SSL_set_rfd(SSL *s, int fd) | |
1306 | { | |
1307 | BIO *wbio = SSL_get_wbio(s); | |
1308 | ||
1309 | if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET | |
1310 | || ((int)BIO_get_fd(wbio, NULL) != fd)) { | |
1311 | BIO *bio = BIO_new(BIO_s_socket()); | |
1312 | ||
1313 | if (bio == NULL) { | |
1314 | SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); | |
1315 | return 0; | |
1316 | } | |
1317 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1318 | SSL_set0_rbio(s, bio); | |
1319 | } else { | |
1320 | BIO_up_ref(wbio); | |
1321 | SSL_set0_rbio(s, wbio); | |
1322 | } | |
1323 | ||
1324 | return 1; | |
1325 | } | |
1326 | #endif | |
1327 | ||
1328 | /* return length of latest Finished message we sent, copy to 'buf' */ | |
1329 | size_t SSL_get_finished(const SSL *s, void *buf, size_t count) | |
1330 | { | |
1331 | size_t ret = 0; | |
1332 | ||
1333 | if (s->s3 != NULL) { | |
1334 | ret = s->s3->tmp.finish_md_len; | |
1335 | if (count > ret) | |
1336 | count = ret; | |
1337 | memcpy(buf, s->s3->tmp.finish_md, count); | |
1338 | } | |
1339 | return ret; | |
1340 | } | |
1341 | ||
1342 | /* return length of latest Finished message we expected, copy to 'buf' */ | |
1343 | size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) | |
1344 | { | |
1345 | size_t ret = 0; | |
1346 | ||
1347 | if (s->s3 != NULL) { | |
1348 | ret = s->s3->tmp.peer_finish_md_len; | |
1349 | if (count > ret) | |
1350 | count = ret; | |
1351 | memcpy(buf, s->s3->tmp.peer_finish_md, count); | |
1352 | } | |
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | int SSL_get_verify_mode(const SSL *s) | |
1357 | { | |
1358 | return (s->verify_mode); | |
1359 | } | |
1360 | ||
1361 | int SSL_get_verify_depth(const SSL *s) | |
1362 | { | |
1363 | return X509_VERIFY_PARAM_get_depth(s->param); | |
1364 | } | |
1365 | ||
1366 | int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { | |
1367 | return (s->verify_callback); | |
1368 | } | |
1369 | ||
1370 | int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) | |
1371 | { | |
1372 | return (ctx->verify_mode); | |
1373 | } | |
1374 | ||
1375 | int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) | |
1376 | { | |
1377 | return X509_VERIFY_PARAM_get_depth(ctx->param); | |
1378 | } | |
1379 | ||
1380 | int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { | |
1381 | return (ctx->default_verify_callback); | |
1382 | } | |
1383 | ||
1384 | void SSL_set_verify(SSL *s, int mode, | |
1385 | int (*callback) (int ok, X509_STORE_CTX *ctx)) | |
1386 | { | |
1387 | s->verify_mode = mode; | |
1388 | if (callback != NULL) | |
1389 | s->verify_callback = callback; | |
1390 | } | |
1391 | ||
1392 | void SSL_set_verify_depth(SSL *s, int depth) | |
1393 | { | |
1394 | X509_VERIFY_PARAM_set_depth(s->param, depth); | |
1395 | } | |
1396 | ||
1397 | void SSL_set_read_ahead(SSL *s, int yes) | |
1398 | { | |
1399 | RECORD_LAYER_set_read_ahead(&s->rlayer, yes); | |
1400 | } | |
1401 | ||
1402 | int SSL_get_read_ahead(const SSL *s) | |
1403 | { | |
1404 | return RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1405 | } | |
1406 | ||
1407 | int SSL_pending(const SSL *s) | |
1408 | { | |
1409 | size_t pending = s->method->ssl_pending(s); | |
1410 | ||
1411 | /* | |
1412 | * SSL_pending cannot work properly if read-ahead is enabled | |
1413 | * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is | |
1414 | * impossible to fix since SSL_pending cannot report errors that may be | |
1415 | * observed while scanning the new data. (Note that SSL_pending() is | |
1416 | * often used as a boolean value, so we'd better not return -1.) | |
1417 | * | |
1418 | * SSL_pending also cannot work properly if the value >INT_MAX. In that case | |
1419 | * we just return INT_MAX. | |
1420 | */ | |
1421 | return pending < INT_MAX ? (int)pending : INT_MAX; | |
1422 | } | |
1423 | ||
1424 | int SSL_has_pending(const SSL *s) | |
1425 | { | |
1426 | /* | |
1427 | * Similar to SSL_pending() but returns a 1 to indicate that we have | |
1428 | * unprocessed data available or 0 otherwise (as opposed to the number of | |
1429 | * bytes available). Unlike SSL_pending() this will take into account | |
1430 | * read_ahead data. A 1 return simply indicates that we have unprocessed | |
1431 | * data. That data may not result in any application data, or we may fail | |
1432 | * to parse the records for some reason. | |
1433 | */ | |
1434 | if (RECORD_LAYER_processed_read_pending(&s->rlayer)) | |
1435 | return 1; | |
1436 | ||
1437 | return RECORD_LAYER_read_pending(&s->rlayer); | |
1438 | } | |
1439 | ||
1440 | X509 *SSL_get_peer_certificate(const SSL *s) | |
1441 | { | |
1442 | X509 *r; | |
1443 | ||
1444 | if ((s == NULL) || (s->session == NULL)) | |
1445 | r = NULL; | |
1446 | else | |
1447 | r = s->session->peer; | |
1448 | ||
1449 | if (r == NULL) | |
1450 | return (r); | |
1451 | ||
1452 | X509_up_ref(r); | |
1453 | ||
1454 | return (r); | |
1455 | } | |
1456 | ||
1457 | STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) | |
1458 | { | |
1459 | STACK_OF(X509) *r; | |
1460 | ||
1461 | if ((s == NULL) || (s->session == NULL)) | |
1462 | r = NULL; | |
1463 | else | |
1464 | r = s->session->peer_chain; | |
1465 | ||
1466 | /* | |
1467 | * If we are a client, cert_chain includes the peer's own certificate; if | |
1468 | * we are a server, it does not. | |
1469 | */ | |
1470 | ||
1471 | return (r); | |
1472 | } | |
1473 | ||
1474 | /* | |
1475 | * Now in theory, since the calling process own 't' it should be safe to | |
1476 | * modify. We need to be able to read f without being hassled | |
1477 | */ | |
1478 | int SSL_copy_session_id(SSL *t, const SSL *f) | |
1479 | { | |
1480 | int i; | |
1481 | /* Do we need to to SSL locking? */ | |
1482 | if (!SSL_set_session(t, SSL_get_session(f))) { | |
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | /* | |
1487 | * what if we are setup for one protocol version but want to talk another | |
1488 | */ | |
1489 | if (t->method != f->method) { | |
1490 | t->method->ssl_free(t); | |
1491 | t->method = f->method; | |
1492 | if (t->method->ssl_new(t) == 0) | |
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock); | |
1497 | ssl_cert_free(t->cert); | |
1498 | t->cert = f->cert; | |
1499 | if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) { | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | return 1; | |
1504 | } | |
1505 | ||
1506 | /* Fix this so it checks all the valid key/cert options */ | |
1507 | int SSL_CTX_check_private_key(const SSL_CTX *ctx) | |
1508 | { | |
1509 | if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) { | |
1510 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1511 | return (0); | |
1512 | } | |
1513 | if (ctx->cert->key->privatekey == NULL) { | |
1514 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1515 | return (0); | |
1516 | } | |
1517 | return (X509_check_private_key | |
1518 | (ctx->cert->key->x509, ctx->cert->key->privatekey)); | |
1519 | } | |
1520 | ||
1521 | /* Fix this function so that it takes an optional type parameter */ | |
1522 | int SSL_check_private_key(const SSL *ssl) | |
1523 | { | |
1524 | if (ssl == NULL) { | |
1525 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
1526 | return (0); | |
1527 | } | |
1528 | if (ssl->cert->key->x509 == NULL) { | |
1529 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1530 | return (0); | |
1531 | } | |
1532 | if (ssl->cert->key->privatekey == NULL) { | |
1533 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1534 | return (0); | |
1535 | } | |
1536 | return (X509_check_private_key(ssl->cert->key->x509, | |
1537 | ssl->cert->key->privatekey)); | |
1538 | } | |
1539 | ||
1540 | int SSL_waiting_for_async(SSL *s) | |
1541 | { | |
1542 | if (s->job) | |
1543 | return 1; | |
1544 | ||
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds) | |
1549 | { | |
1550 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1551 | ||
1552 | if (ctx == NULL) | |
1553 | return 0; | |
1554 | return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds); | |
1555 | } | |
1556 | ||
1557 | int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds, | |
1558 | OSSL_ASYNC_FD *delfd, size_t *numdelfds) | |
1559 | { | |
1560 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1561 | ||
1562 | if (ctx == NULL) | |
1563 | return 0; | |
1564 | return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd, | |
1565 | numdelfds); | |
1566 | } | |
1567 | ||
1568 | int SSL_accept(SSL *s) | |
1569 | { | |
1570 | if (s->handshake_func == NULL) { | |
1571 | /* Not properly initialized yet */ | |
1572 | SSL_set_accept_state(s); | |
1573 | } | |
1574 | ||
1575 | return SSL_do_handshake(s); | |
1576 | } | |
1577 | ||
1578 | int SSL_connect(SSL *s) | |
1579 | { | |
1580 | if (s->handshake_func == NULL) { | |
1581 | /* Not properly initialized yet */ | |
1582 | SSL_set_connect_state(s); | |
1583 | } | |
1584 | ||
1585 | return SSL_do_handshake(s); | |
1586 | } | |
1587 | ||
1588 | long SSL_get_default_timeout(const SSL *s) | |
1589 | { | |
1590 | return (s->method->get_timeout()); | |
1591 | } | |
1592 | ||
1593 | static int ssl_start_async_job(SSL *s, struct ssl_async_args *args, | |
1594 | int (*func) (void *)) | |
1595 | { | |
1596 | int ret; | |
1597 | if (s->waitctx == NULL) { | |
1598 | s->waitctx = ASYNC_WAIT_CTX_new(); | |
1599 | if (s->waitctx == NULL) | |
1600 | return -1; | |
1601 | } | |
1602 | switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args, | |
1603 | sizeof(struct ssl_async_args))) { | |
1604 | case ASYNC_ERR: | |
1605 | s->rwstate = SSL_NOTHING; | |
1606 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC); | |
1607 | return -1; | |
1608 | case ASYNC_PAUSE: | |
1609 | s->rwstate = SSL_ASYNC_PAUSED; | |
1610 | return -1; | |
1611 | case ASYNC_NO_JOBS: | |
1612 | s->rwstate = SSL_ASYNC_NO_JOBS; | |
1613 | return -1; | |
1614 | case ASYNC_FINISH: | |
1615 | s->job = NULL; | |
1616 | return ret; | |
1617 | default: | |
1618 | s->rwstate = SSL_NOTHING; | |
1619 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR); | |
1620 | /* Shouldn't happen */ | |
1621 | return -1; | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | static int ssl_io_intern(void *vargs) | |
1626 | { | |
1627 | struct ssl_async_args *args; | |
1628 | SSL *s; | |
1629 | void *buf; | |
1630 | size_t num; | |
1631 | ||
1632 | args = (struct ssl_async_args *)vargs; | |
1633 | s = args->s; | |
1634 | buf = args->buf; | |
1635 | num = args->num; | |
1636 | switch (args->type) { | |
1637 | case READFUNC: | |
1638 | return args->f.func_read(s, buf, num, &s->asyncrw); | |
1639 | case WRITEFUNC: | |
1640 | return args->f.func_write(s, buf, num, &s->asyncrw); | |
1641 | case OTHERFUNC: | |
1642 | return args->f.func_other(s); | |
1643 | } | |
1644 | return -1; | |
1645 | } | |
1646 | ||
1647 | int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1648 | { | |
1649 | if (s->handshake_func == NULL) { | |
1650 | SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED); | |
1651 | return -1; | |
1652 | } | |
1653 | ||
1654 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1655 | s->rwstate = SSL_NOTHING; | |
1656 | return 0; | |
1657 | } | |
1658 | ||
1659 | if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY | |
1660 | || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) { | |
1661 | SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1662 | return 0; | |
1663 | } | |
1664 | /* | |
1665 | * If we are a client and haven't received the ServerHello etc then we | |
1666 | * better do that | |
1667 | */ | |
1668 | ossl_statem_check_finish_init(s, 0); | |
1669 | ||
1670 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1671 | struct ssl_async_args args; | |
1672 | int ret; | |
1673 | ||
1674 | args.s = s; | |
1675 | args.buf = buf; | |
1676 | args.num = num; | |
1677 | args.type = READFUNC; | |
1678 | args.f.func_read = s->method->ssl_read; | |
1679 | ||
1680 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1681 | *readbytes = s->asyncrw; | |
1682 | return ret; | |
1683 | } else { | |
1684 | return s->method->ssl_read(s, buf, num, readbytes); | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | int SSL_read(SSL *s, void *buf, int num) | |
1689 | { | |
1690 | int ret; | |
1691 | size_t readbytes; | |
1692 | ||
1693 | if (num < 0) { | |
1694 | SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH); | |
1695 | return -1; | |
1696 | } | |
1697 | ||
1698 | ret = ssl_read_internal(s, buf, (size_t)num, &readbytes); | |
1699 | ||
1700 | /* | |
1701 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1702 | * <= INT_MAX | |
1703 | */ | |
1704 | if (ret > 0) | |
1705 | ret = (int)readbytes; | |
1706 | ||
1707 | return ret; | |
1708 | } | |
1709 | ||
1710 | int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1711 | { | |
1712 | int ret = ssl_read_internal(s, buf, num, readbytes); | |
1713 | ||
1714 | if (ret < 0) | |
1715 | ret = 0; | |
1716 | return ret; | |
1717 | } | |
1718 | ||
1719 | int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1720 | { | |
1721 | int ret; | |
1722 | ||
1723 | if (!s->server) { | |
1724 | SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1725 | return SSL_READ_EARLY_DATA_ERROR; | |
1726 | } | |
1727 | ||
1728 | switch (s->early_data_state) { | |
1729 | case SSL_EARLY_DATA_NONE: | |
1730 | if (!SSL_in_before(s)) { | |
1731 | SSLerr(SSL_F_SSL_READ_EARLY_DATA, | |
1732 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1733 | return SSL_READ_EARLY_DATA_ERROR; | |
1734 | } | |
1735 | /* fall through */ | |
1736 | ||
1737 | case SSL_EARLY_DATA_ACCEPT_RETRY: | |
1738 | s->early_data_state = SSL_EARLY_DATA_ACCEPTING; | |
1739 | ret = SSL_accept(s); | |
1740 | if (ret <= 0) { | |
1741 | /* NBIO or error */ | |
1742 | s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY; | |
1743 | return SSL_READ_EARLY_DATA_ERROR; | |
1744 | } | |
1745 | /* fall through */ | |
1746 | ||
1747 | case SSL_EARLY_DATA_READ_RETRY: | |
1748 | if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) { | |
1749 | s->early_data_state = SSL_EARLY_DATA_READING; | |
1750 | ret = SSL_read_ex(s, buf, num, readbytes); | |
1751 | /* | |
1752 | * State machine will update early_data_state to | |
1753 | * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData | |
1754 | * message | |
1755 | */ | |
1756 | if (ret > 0 || (ret <= 0 && s->early_data_state | |
1757 | != SSL_EARLY_DATA_FINISHED_READING)) { | |
1758 | s->early_data_state = SSL_EARLY_DATA_READ_RETRY; | |
1759 | return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS | |
1760 | : SSL_READ_EARLY_DATA_ERROR; | |
1761 | } | |
1762 | } else { | |
1763 | s->early_data_state = SSL_EARLY_DATA_FINISHED_READING; | |
1764 | } | |
1765 | *readbytes = 0; | |
1766 | return SSL_READ_EARLY_DATA_FINISH; | |
1767 | ||
1768 | default: | |
1769 | SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1770 | return SSL_READ_EARLY_DATA_ERROR; | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | int SSL_get_early_data_status(const SSL *s) | |
1775 | { | |
1776 | return s->ext.early_data; | |
1777 | } | |
1778 | ||
1779 | static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1780 | { | |
1781 | if (s->handshake_func == NULL) { | |
1782 | SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED); | |
1783 | return -1; | |
1784 | } | |
1785 | ||
1786 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1787 | return 0; | |
1788 | } | |
1789 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1790 | struct ssl_async_args args; | |
1791 | int ret; | |
1792 | ||
1793 | args.s = s; | |
1794 | args.buf = buf; | |
1795 | args.num = num; | |
1796 | args.type = READFUNC; | |
1797 | args.f.func_read = s->method->ssl_peek; | |
1798 | ||
1799 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1800 | *readbytes = s->asyncrw; | |
1801 | return ret; | |
1802 | } else { | |
1803 | return s->method->ssl_peek(s, buf, num, readbytes); | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | int SSL_peek(SSL *s, void *buf, int num) | |
1808 | { | |
1809 | int ret; | |
1810 | size_t readbytes; | |
1811 | ||
1812 | if (num < 0) { | |
1813 | SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH); | |
1814 | return -1; | |
1815 | } | |
1816 | ||
1817 | ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes); | |
1818 | ||
1819 | /* | |
1820 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1821 | * <= INT_MAX | |
1822 | */ | |
1823 | if (ret > 0) | |
1824 | ret = (int)readbytes; | |
1825 | ||
1826 | return ret; | |
1827 | } | |
1828 | ||
1829 | ||
1830 | int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1831 | { | |
1832 | int ret = ssl_peek_internal(s, buf, num, readbytes); | |
1833 | ||
1834 | if (ret < 0) | |
1835 | ret = 0; | |
1836 | return ret; | |
1837 | } | |
1838 | ||
1839 | int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written) | |
1840 | { | |
1841 | if (s->handshake_func == NULL) { | |
1842 | SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED); | |
1843 | return -1; | |
1844 | } | |
1845 | ||
1846 | if (s->shutdown & SSL_SENT_SHUTDOWN) { | |
1847 | s->rwstate = SSL_NOTHING; | |
1848 | SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN); | |
1849 | return -1; | |
1850 | } | |
1851 | ||
1852 | if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY | |
1853 | || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY | |
1854 | || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) { | |
1855 | SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1856 | return 0; | |
1857 | } | |
1858 | /* If we are a client and haven't sent the Finished we better do that */ | |
1859 | ossl_statem_check_finish_init(s, 1); | |
1860 | ||
1861 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1862 | int ret; | |
1863 | struct ssl_async_args args; | |
1864 | ||
1865 | args.s = s; | |
1866 | args.buf = (void *)buf; | |
1867 | args.num = num; | |
1868 | args.type = WRITEFUNC; | |
1869 | args.f.func_write = s->method->ssl_write; | |
1870 | ||
1871 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1872 | *written = s->asyncrw; | |
1873 | return ret; | |
1874 | } else { | |
1875 | return s->method->ssl_write(s, buf, num, written); | |
1876 | } | |
1877 | } | |
1878 | ||
1879 | int SSL_write(SSL *s, const void *buf, int num) | |
1880 | { | |
1881 | int ret; | |
1882 | size_t written; | |
1883 | ||
1884 | if (num < 0) { | |
1885 | SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH); | |
1886 | return -1; | |
1887 | } | |
1888 | ||
1889 | ret = ssl_write_internal(s, buf, (size_t)num, &written); | |
1890 | ||
1891 | /* | |
1892 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1893 | * <= INT_MAX | |
1894 | */ | |
1895 | if (ret > 0) | |
1896 | ret = (int)written; | |
1897 | ||
1898 | return ret; | |
1899 | } | |
1900 | ||
1901 | int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written) | |
1902 | { | |
1903 | int ret = ssl_write_internal(s, buf, num, written); | |
1904 | ||
1905 | if (ret < 0) | |
1906 | ret = 0; | |
1907 | return ret; | |
1908 | } | |
1909 | ||
1910 | int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) | |
1911 | { | |
1912 | int ret, early_data_state; | |
1913 | ||
1914 | switch (s->early_data_state) { | |
1915 | case SSL_EARLY_DATA_NONE: | |
1916 | if (s->server | |
1917 | || !SSL_in_before(s) | |
1918 | || ((s->session == NULL || s->session->ext.max_early_data == 0) | |
1919 | && (s->psk_use_session_cb == NULL))) { | |
1920 | SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, | |
1921 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1922 | return 0; | |
1923 | } | |
1924 | /* fall through */ | |
1925 | ||
1926 | case SSL_EARLY_DATA_CONNECT_RETRY: | |
1927 | s->early_data_state = SSL_EARLY_DATA_CONNECTING; | |
1928 | ret = SSL_connect(s); | |
1929 | if (ret <= 0) { | |
1930 | /* NBIO or error */ | |
1931 | s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY; | |
1932 | return 0; | |
1933 | } | |
1934 | /* fall through */ | |
1935 | ||
1936 | case SSL_EARLY_DATA_WRITE_RETRY: | |
1937 | s->early_data_state = SSL_EARLY_DATA_WRITING; | |
1938 | ret = SSL_write_ex(s, buf, num, written); | |
1939 | s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY; | |
1940 | return ret; | |
1941 | ||
1942 | case SSL_EARLY_DATA_FINISHED_READING: | |
1943 | case SSL_EARLY_DATA_READ_RETRY: | |
1944 | early_data_state = s->early_data_state; | |
1945 | /* We are a server writing to an unauthenticated client */ | |
1946 | s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING; | |
1947 | ret = SSL_write_ex(s, buf, num, written); | |
1948 | s->early_data_state = early_data_state; | |
1949 | return ret; | |
1950 | ||
1951 | default: | |
1952 | SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
1953 | return 0; | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | int SSL_shutdown(SSL *s) | |
1958 | { | |
1959 | /* | |
1960 | * Note that this function behaves differently from what one might | |
1961 | * expect. Return values are 0 for no success (yet), 1 for success; but | |
1962 | * calling it once is usually not enough, even if blocking I/O is used | |
1963 | * (see ssl3_shutdown). | |
1964 | */ | |
1965 | ||
1966 | if (s->handshake_func == NULL) { | |
1967 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); | |
1968 | return -1; | |
1969 | } | |
1970 | ||
1971 | if (!SSL_in_init(s)) { | |
1972 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1973 | struct ssl_async_args args; | |
1974 | ||
1975 | args.s = s; | |
1976 | args.type = OTHERFUNC; | |
1977 | args.f.func_other = s->method->ssl_shutdown; | |
1978 | ||
1979 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1980 | } else { | |
1981 | return s->method->ssl_shutdown(s); | |
1982 | } | |
1983 | } else { | |
1984 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT); | |
1985 | return -1; | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | int SSL_key_update(SSL *s, int updatetype) | |
1990 | { | |
1991 | /* | |
1992 | * TODO(TLS1.3): How will applications know whether TLSv1.3 has been | |
1993 | * negotiated, and that it is appropriate to call SSL_key_update() instead | |
1994 | * of SSL_renegotiate(). | |
1995 | */ | |
1996 | if (!SSL_IS_TLS13(s)) { | |
1997 | SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION); | |
1998 | return 0; | |
1999 | } | |
2000 | ||
2001 | if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED | |
2002 | && updatetype != SSL_KEY_UPDATE_REQUESTED) { | |
2003 | SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE); | |
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | if (!SSL_is_init_finished(s)) { | |
2008 | SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT); | |
2009 | return 0; | |
2010 | } | |
2011 | ||
2012 | ossl_statem_set_in_init(s, 1); | |
2013 | s->key_update = updatetype; | |
2014 | return 1; | |
2015 | } | |
2016 | ||
2017 | int SSL_get_key_update_type(SSL *s) | |
2018 | { | |
2019 | return s->key_update; | |
2020 | } | |
2021 | ||
2022 | int SSL_renegotiate(SSL *s) | |
2023 | { | |
2024 | if (SSL_IS_TLS13(s)) { | |
2025 | SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION); | |
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | if ((s->options & SSL_OP_NO_RENEGOTIATION)) { | |
2030 | SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION); | |
2031 | return 0; | |
2032 | } | |
2033 | ||
2034 | s->renegotiate = 1; | |
2035 | s->new_session = 1; | |
2036 | ||
2037 | return (s->method->ssl_renegotiate(s)); | |
2038 | } | |
2039 | ||
2040 | int SSL_renegotiate_abbreviated(SSL *s) | |
2041 | { | |
2042 | if (SSL_IS_TLS13(s)) { | |
2043 | SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION); | |
2044 | return 0; | |
2045 | } | |
2046 | ||
2047 | if ((s->options & SSL_OP_NO_RENEGOTIATION)) { | |
2048 | SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION); | |
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | s->renegotiate = 1; | |
2053 | s->new_session = 0; | |
2054 | ||
2055 | return (s->method->ssl_renegotiate(s)); | |
2056 | } | |
2057 | ||
2058 | int SSL_renegotiate_pending(SSL *s) | |
2059 | { | |
2060 | /* | |
2061 | * becomes true when negotiation is requested; false again once a | |
2062 | * handshake has finished | |
2063 | */ | |
2064 | return (s->renegotiate != 0); | |
2065 | } | |
2066 | ||
2067 | long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) | |
2068 | { | |
2069 | long l; | |
2070 | ||
2071 | switch (cmd) { | |
2072 | case SSL_CTRL_GET_READ_AHEAD: | |
2073 | return (RECORD_LAYER_get_read_ahead(&s->rlayer)); | |
2074 | case SSL_CTRL_SET_READ_AHEAD: | |
2075 | l = RECORD_LAYER_get_read_ahead(&s->rlayer); | |
2076 | RECORD_LAYER_set_read_ahead(&s->rlayer, larg); | |
2077 | return (l); | |
2078 | ||
2079 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
2080 | s->msg_callback_arg = parg; | |
2081 | return 1; | |
2082 | ||
2083 | case SSL_CTRL_MODE: | |
2084 | return (s->mode |= larg); | |
2085 | case SSL_CTRL_CLEAR_MODE: | |
2086 | return (s->mode &= ~larg); | |
2087 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
2088 | return (long)(s->max_cert_list); | |
2089 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
2090 | if (larg < 0) | |
2091 | return 0; | |
2092 | l = (long)s->max_cert_list; | |
2093 | s->max_cert_list = (size_t)larg; | |
2094 | return l; | |
2095 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
2096 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
2097 | return 0; | |
2098 | s->max_send_fragment = larg; | |
2099 | if (s->max_send_fragment < s->split_send_fragment) | |
2100 | s->split_send_fragment = s->max_send_fragment; | |
2101 | return 1; | |
2102 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
2103 | if ((size_t)larg > s->max_send_fragment || larg == 0) | |
2104 | return 0; | |
2105 | s->split_send_fragment = larg; | |
2106 | return 1; | |
2107 | case SSL_CTRL_SET_MAX_PIPELINES: | |
2108 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
2109 | return 0; | |
2110 | s->max_pipelines = larg; | |
2111 | if (larg > 1) | |
2112 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
2113 | return 1; | |
2114 | case SSL_CTRL_GET_RI_SUPPORT: | |
2115 | if (s->s3) | |
2116 | return s->s3->send_connection_binding; | |
2117 | else | |
2118 | return 0; | |
2119 | case SSL_CTRL_CERT_FLAGS: | |
2120 | return (s->cert->cert_flags |= larg); | |
2121 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
2122 | return (s->cert->cert_flags &= ~larg); | |
2123 | ||
2124 | case SSL_CTRL_GET_RAW_CIPHERLIST: | |
2125 | if (parg) { | |
2126 | if (s->s3->tmp.ciphers_raw == NULL) | |
2127 | return 0; | |
2128 | *(unsigned char **)parg = s->s3->tmp.ciphers_raw; | |
2129 | return (int)s->s3->tmp.ciphers_rawlen; | |
2130 | } else { | |
2131 | return TLS_CIPHER_LEN; | |
2132 | } | |
2133 | case SSL_CTRL_GET_EXTMS_SUPPORT: | |
2134 | if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s)) | |
2135 | return -1; | |
2136 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) | |
2137 | return 1; | |
2138 | else | |
2139 | return 0; | |
2140 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
2141 | return ssl_check_allowed_versions(larg, s->max_proto_version) | |
2142 | && ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
2143 | &s->min_proto_version); | |
2144 | case SSL_CTRL_GET_MIN_PROTO_VERSION: | |
2145 | return s->min_proto_version; | |
2146 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
2147 | return ssl_check_allowed_versions(s->min_proto_version, larg) | |
2148 | && ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
2149 | &s->max_proto_version); | |
2150 | case SSL_CTRL_GET_MAX_PROTO_VERSION: | |
2151 | return s->max_proto_version; | |
2152 | default: | |
2153 | return (s->method->ssl_ctrl(s, cmd, larg, parg)); | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) | |
2158 | { | |
2159 | switch (cmd) { | |
2160 | case SSL_CTRL_SET_MSG_CALLBACK: | |
2161 | s->msg_callback = (void (*) | |
2162 | (int write_p, int version, int content_type, | |
2163 | const void *buf, size_t len, SSL *ssl, | |
2164 | void *arg))(fp); | |
2165 | return 1; | |
2166 | ||
2167 | default: | |
2168 | return (s->method->ssl_callback_ctrl(s, cmd, fp)); | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) | |
2173 | { | |
2174 | return ctx->sessions; | |
2175 | } | |
2176 | ||
2177 | long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) | |
2178 | { | |
2179 | long l; | |
2180 | /* For some cases with ctx == NULL perform syntax checks */ | |
2181 | if (ctx == NULL) { | |
2182 | switch (cmd) { | |
2183 | #ifndef OPENSSL_NO_EC | |
2184 | case SSL_CTRL_SET_GROUPS_LIST: | |
2185 | return tls1_set_groups_list(NULL, NULL, parg); | |
2186 | #endif | |
2187 | case SSL_CTRL_SET_SIGALGS_LIST: | |
2188 | case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: | |
2189 | return tls1_set_sigalgs_list(NULL, parg, 0); | |
2190 | default: | |
2191 | return 0; | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | switch (cmd) { | |
2196 | case SSL_CTRL_GET_READ_AHEAD: | |
2197 | return (ctx->read_ahead); | |
2198 | case SSL_CTRL_SET_READ_AHEAD: | |
2199 | l = ctx->read_ahead; | |
2200 | ctx->read_ahead = larg; | |
2201 | return (l); | |
2202 | ||
2203 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
2204 | ctx->msg_callback_arg = parg; | |
2205 | return 1; | |
2206 | ||
2207 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
2208 | return (long)(ctx->max_cert_list); | |
2209 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
2210 | if (larg < 0) | |
2211 | return 0; | |
2212 | l = (long)ctx->max_cert_list; | |
2213 | ctx->max_cert_list = (size_t)larg; | |
2214 | return l; | |
2215 | ||
2216 | case SSL_CTRL_SET_SESS_CACHE_SIZE: | |
2217 | if (larg < 0) | |
2218 | return 0; | |
2219 | l = (long)ctx->session_cache_size; | |
2220 | ctx->session_cache_size = (size_t)larg; | |
2221 | return l; | |
2222 | case SSL_CTRL_GET_SESS_CACHE_SIZE: | |
2223 | return (long)(ctx->session_cache_size); | |
2224 | case SSL_CTRL_SET_SESS_CACHE_MODE: | |
2225 | l = ctx->session_cache_mode; | |
2226 | ctx->session_cache_mode = larg; | |
2227 | return (l); | |
2228 | case SSL_CTRL_GET_SESS_CACHE_MODE: | |
2229 | return (ctx->session_cache_mode); | |
2230 | ||
2231 | case SSL_CTRL_SESS_NUMBER: | |
2232 | return (lh_SSL_SESSION_num_items(ctx->sessions)); | |
2233 | case SSL_CTRL_SESS_CONNECT: | |
2234 | return (ctx->stats.sess_connect); | |
2235 | case SSL_CTRL_SESS_CONNECT_GOOD: | |
2236 | return (ctx->stats.sess_connect_good); | |
2237 | case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: | |
2238 | return (ctx->stats.sess_connect_renegotiate); | |
2239 | case SSL_CTRL_SESS_ACCEPT: | |
2240 | return (ctx->stats.sess_accept); | |
2241 | case SSL_CTRL_SESS_ACCEPT_GOOD: | |
2242 | return (ctx->stats.sess_accept_good); | |
2243 | case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: | |
2244 | return (ctx->stats.sess_accept_renegotiate); | |
2245 | case SSL_CTRL_SESS_HIT: | |
2246 | return (ctx->stats.sess_hit); | |
2247 | case SSL_CTRL_SESS_CB_HIT: | |
2248 | return (ctx->stats.sess_cb_hit); | |
2249 | case SSL_CTRL_SESS_MISSES: | |
2250 | return (ctx->stats.sess_miss); | |
2251 | case SSL_CTRL_SESS_TIMEOUTS: | |
2252 | return (ctx->stats.sess_timeout); | |
2253 | case SSL_CTRL_SESS_CACHE_FULL: | |
2254 | return (ctx->stats.sess_cache_full); | |
2255 | case SSL_CTRL_MODE: | |
2256 | return (ctx->mode |= larg); | |
2257 | case SSL_CTRL_CLEAR_MODE: | |
2258 | return (ctx->mode &= ~larg); | |
2259 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
2260 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
2261 | return 0; | |
2262 | ctx->max_send_fragment = larg; | |
2263 | if (ctx->max_send_fragment < ctx->split_send_fragment) | |
2264 | ctx->split_send_fragment = ctx->max_send_fragment; | |
2265 | return 1; | |
2266 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
2267 | if ((size_t)larg > ctx->max_send_fragment || larg == 0) | |
2268 | return 0; | |
2269 | ctx->split_send_fragment = larg; | |
2270 | return 1; | |
2271 | case SSL_CTRL_SET_MAX_PIPELINES: | |
2272 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
2273 | return 0; | |
2274 | ctx->max_pipelines = larg; | |
2275 | return 1; | |
2276 | case SSL_CTRL_CERT_FLAGS: | |
2277 | return (ctx->cert->cert_flags |= larg); | |
2278 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
2279 | return (ctx->cert->cert_flags &= ~larg); | |
2280 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
2281 | return ssl_check_allowed_versions(larg, ctx->max_proto_version) | |
2282 | && ssl_set_version_bound(ctx->method->version, (int)larg, | |
2283 | &ctx->min_proto_version); | |
2284 | case SSL_CTRL_GET_MIN_PROTO_VERSION: | |
2285 | return ctx->min_proto_version; | |
2286 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
2287 | return ssl_check_allowed_versions(ctx->min_proto_version, larg) | |
2288 | && ssl_set_version_bound(ctx->method->version, (int)larg, | |
2289 | &ctx->max_proto_version); | |
2290 | case SSL_CTRL_GET_MAX_PROTO_VERSION: | |
2291 | return ctx->max_proto_version; | |
2292 | default: | |
2293 | return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) | |
2298 | { | |
2299 | switch (cmd) { | |
2300 | case SSL_CTRL_SET_MSG_CALLBACK: | |
2301 | ctx->msg_callback = (void (*) | |
2302 | (int write_p, int version, int content_type, | |
2303 | const void *buf, size_t len, SSL *ssl, | |
2304 | void *arg))(fp); | |
2305 | return 1; | |
2306 | ||
2307 | default: | |
2308 | return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) | |
2313 | { | |
2314 | if (a->id > b->id) | |
2315 | return 1; | |
2316 | if (a->id < b->id) | |
2317 | return -1; | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, | |
2322 | const SSL_CIPHER *const *bp) | |
2323 | { | |
2324 | if ((*ap)->id > (*bp)->id) | |
2325 | return 1; | |
2326 | if ((*ap)->id < (*bp)->id) | |
2327 | return -1; | |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | /** return a STACK of the ciphers available for the SSL and in order of | |
2332 | * preference */ | |
2333 | STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) | |
2334 | { | |
2335 | if (s != NULL) { | |
2336 | if (s->cipher_list != NULL) { | |
2337 | return (s->cipher_list); | |
2338 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { | |
2339 | return (s->ctx->cipher_list); | |
2340 | } | |
2341 | } | |
2342 | return (NULL); | |
2343 | } | |
2344 | ||
2345 | STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s) | |
2346 | { | |
2347 | if ((s == NULL) || (s->session == NULL) || !s->server) | |
2348 | return NULL; | |
2349 | return s->session->ciphers; | |
2350 | } | |
2351 | ||
2352 | STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s) | |
2353 | { | |
2354 | STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers; | |
2355 | int i; | |
2356 | ciphers = SSL_get_ciphers(s); | |
2357 | if (!ciphers) | |
2358 | return NULL; | |
2359 | ssl_set_client_disabled(s); | |
2360 | for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { | |
2361 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i); | |
2362 | if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) { | |
2363 | if (!sk) | |
2364 | sk = sk_SSL_CIPHER_new_null(); | |
2365 | if (!sk) | |
2366 | return NULL; | |
2367 | if (!sk_SSL_CIPHER_push(sk, c)) { | |
2368 | sk_SSL_CIPHER_free(sk); | |
2369 | return NULL; | |
2370 | } | |
2371 | } | |
2372 | } | |
2373 | return sk; | |
2374 | } | |
2375 | ||
2376 | /** return a STACK of the ciphers available for the SSL and in order of | |
2377 | * algorithm id */ | |
2378 | STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) | |
2379 | { | |
2380 | if (s != NULL) { | |
2381 | if (s->cipher_list_by_id != NULL) { | |
2382 | return (s->cipher_list_by_id); | |
2383 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { | |
2384 | return (s->ctx->cipher_list_by_id); | |
2385 | } | |
2386 | } | |
2387 | return (NULL); | |
2388 | } | |
2389 | ||
2390 | /** The old interface to get the same thing as SSL_get_ciphers() */ | |
2391 | const char *SSL_get_cipher_list(const SSL *s, int n) | |
2392 | { | |
2393 | const SSL_CIPHER *c; | |
2394 | STACK_OF(SSL_CIPHER) *sk; | |
2395 | ||
2396 | if (s == NULL) | |
2397 | return (NULL); | |
2398 | sk = SSL_get_ciphers(s); | |
2399 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) | |
2400 | return (NULL); | |
2401 | c = sk_SSL_CIPHER_value(sk, n); | |
2402 | if (c == NULL) | |
2403 | return (NULL); | |
2404 | return (c->name); | |
2405 | } | |
2406 | ||
2407 | /** return a STACK of the ciphers available for the SSL_CTX and in order of | |
2408 | * preference */ | |
2409 | STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx) | |
2410 | { | |
2411 | if (ctx != NULL) | |
2412 | return ctx->cipher_list; | |
2413 | return NULL; | |
2414 | } | |
2415 | ||
2416 | /** specify the ciphers to be used by default by the SSL_CTX */ | |
2417 | int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) | |
2418 | { | |
2419 | STACK_OF(SSL_CIPHER) *sk; | |
2420 | ||
2421 | sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, | |
2422 | &ctx->cipher_list_by_id, str, ctx->cert); | |
2423 | /* | |
2424 | * ssl_create_cipher_list may return an empty stack if it was unable to | |
2425 | * find a cipher matching the given rule string (for example if the rule | |
2426 | * string specifies a cipher which has been disabled). This is not an | |
2427 | * error as far as ssl_create_cipher_list is concerned, and hence | |
2428 | * ctx->cipher_list and ctx->cipher_list_by_id has been updated. | |
2429 | */ | |
2430 | if (sk == NULL) | |
2431 | return 0; | |
2432 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2433 | SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2434 | return 0; | |
2435 | } | |
2436 | return 1; | |
2437 | } | |
2438 | ||
2439 | /** specify the ciphers to be used by the SSL */ | |
2440 | int SSL_set_cipher_list(SSL *s, const char *str) | |
2441 | { | |
2442 | STACK_OF(SSL_CIPHER) *sk; | |
2443 | ||
2444 | sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, | |
2445 | &s->cipher_list_by_id, str, s->cert); | |
2446 | /* see comment in SSL_CTX_set_cipher_list */ | |
2447 | if (sk == NULL) | |
2448 | return 0; | |
2449 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2450 | SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2451 | return 0; | |
2452 | } | |
2453 | return 1; | |
2454 | } | |
2455 | ||
2456 | char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) | |
2457 | { | |
2458 | char *p; | |
2459 | STACK_OF(SSL_CIPHER) *sk; | |
2460 | const SSL_CIPHER *c; | |
2461 | int i; | |
2462 | ||
2463 | if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) | |
2464 | return (NULL); | |
2465 | ||
2466 | p = buf; | |
2467 | sk = s->session->ciphers; | |
2468 | ||
2469 | if (sk_SSL_CIPHER_num(sk) == 0) | |
2470 | return NULL; | |
2471 | ||
2472 | for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { | |
2473 | int n; | |
2474 | ||
2475 | c = sk_SSL_CIPHER_value(sk, i); | |
2476 | n = strlen(c->name); | |
2477 | if (n + 1 > len) { | |
2478 | if (p != buf) | |
2479 | --p; | |
2480 | *p = '\0'; | |
2481 | return buf; | |
2482 | } | |
2483 | strcpy(p, c->name); | |
2484 | p += n; | |
2485 | *(p++) = ':'; | |
2486 | len -= n + 1; | |
2487 | } | |
2488 | p[-1] = '\0'; | |
2489 | return (buf); | |
2490 | } | |
2491 | ||
2492 | /** return a servername extension value if provided in Client Hello, or NULL. | |
2493 | * So far, only host_name types are defined (RFC 3546). | |
2494 | */ | |
2495 | ||
2496 | const char *SSL_get_servername(const SSL *s, const int type) | |
2497 | { | |
2498 | if (type != TLSEXT_NAMETYPE_host_name) | |
2499 | return NULL; | |
2500 | ||
2501 | return s->session && !s->ext.hostname ? | |
2502 | s->session->ext.hostname : s->ext.hostname; | |
2503 | } | |
2504 | ||
2505 | int SSL_get_servername_type(const SSL *s) | |
2506 | { | |
2507 | if (s->session | |
2508 | && (!s->ext.hostname ? s->session-> | |
2509 | ext.hostname : s->ext.hostname)) | |
2510 | return TLSEXT_NAMETYPE_host_name; | |
2511 | return -1; | |
2512 | } | |
2513 | ||
2514 | /* | |
2515 | * SSL_select_next_proto implements the standard protocol selection. It is | |
2516 | * expected that this function is called from the callback set by | |
2517 | * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a | |
2518 | * vector of 8-bit, length prefixed byte strings. The length byte itself is | |
2519 | * not included in the length. A byte string of length 0 is invalid. No byte | |
2520 | * string may be truncated. The current, but experimental algorithm for | |
2521 | * selecting the protocol is: 1) If the server doesn't support NPN then this | |
2522 | * is indicated to the callback. In this case, the client application has to | |
2523 | * abort the connection or have a default application level protocol. 2) If | |
2524 | * the server supports NPN, but advertises an empty list then the client | |
2525 | * selects the first protocol in its list, but indicates via the API that this | |
2526 | * fallback case was enacted. 3) Otherwise, the client finds the first | |
2527 | * protocol in the server's list that it supports and selects this protocol. | |
2528 | * This is because it's assumed that the server has better information about | |
2529 | * which protocol a client should use. 4) If the client doesn't support any | |
2530 | * of the server's advertised protocols, then this is treated the same as | |
2531 | * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was | |
2532 | * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. | |
2533 | */ | |
2534 | int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, | |
2535 | const unsigned char *server, | |
2536 | unsigned int server_len, | |
2537 | const unsigned char *client, unsigned int client_len) | |
2538 | { | |
2539 | unsigned int i, j; | |
2540 | const unsigned char *result; | |
2541 | int status = OPENSSL_NPN_UNSUPPORTED; | |
2542 | ||
2543 | /* | |
2544 | * For each protocol in server preference order, see if we support it. | |
2545 | */ | |
2546 | for (i = 0; i < server_len;) { | |
2547 | for (j = 0; j < client_len;) { | |
2548 | if (server[i] == client[j] && | |
2549 | memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { | |
2550 | /* We found a match */ | |
2551 | result = &server[i]; | |
2552 | status = OPENSSL_NPN_NEGOTIATED; | |
2553 | goto found; | |
2554 | } | |
2555 | j += client[j]; | |
2556 | j++; | |
2557 | } | |
2558 | i += server[i]; | |
2559 | i++; | |
2560 | } | |
2561 | ||
2562 | /* There's no overlap between our protocols and the server's list. */ | |
2563 | result = client; | |
2564 | status = OPENSSL_NPN_NO_OVERLAP; | |
2565 | ||
2566 | found: | |
2567 | *out = (unsigned char *)result + 1; | |
2568 | *outlen = result[0]; | |
2569 | return status; | |
2570 | } | |
2571 | ||
2572 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
2573 | /* | |
2574 | * SSL_get0_next_proto_negotiated sets *data and *len to point to the | |
2575 | * client's requested protocol for this connection and returns 0. If the | |
2576 | * client didn't request any protocol, then *data is set to NULL. Note that | |
2577 | * the client can request any protocol it chooses. The value returned from | |
2578 | * this function need not be a member of the list of supported protocols | |
2579 | * provided by the callback. | |
2580 | */ | |
2581 | void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, | |
2582 | unsigned *len) | |
2583 | { | |
2584 | *data = s->ext.npn; | |
2585 | if (!*data) { | |
2586 | *len = 0; | |
2587 | } else { | |
2588 | *len = (unsigned int)s->ext.npn_len; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | /* | |
2593 | * SSL_CTX_set_npn_advertised_cb sets a callback that is called when | |
2594 | * a TLS server needs a list of supported protocols for Next Protocol | |
2595 | * Negotiation. The returned list must be in wire format. The list is | |
2596 | * returned by setting |out| to point to it and |outlen| to its length. This | |
2597 | * memory will not be modified, but one should assume that the SSL* keeps a | |
2598 | * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it | |
2599 | * wishes to advertise. Otherwise, no such extension will be included in the | |
2600 | * ServerHello. | |
2601 | */ | |
2602 | void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx, | |
2603 | SSL_CTX_npn_advertised_cb_func cb, | |
2604 | void *arg) | |
2605 | { | |
2606 | ctx->ext.npn_advertised_cb = cb; | |
2607 | ctx->ext.npn_advertised_cb_arg = arg; | |
2608 | } | |
2609 | ||
2610 | /* | |
2611 | * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a | |
2612 | * client needs to select a protocol from the server's provided list. |out| | |
2613 | * must be set to point to the selected protocol (which may be within |in|). | |
2614 | * The length of the protocol name must be written into |outlen|. The | |
2615 | * server's advertised protocols are provided in |in| and |inlen|. The | |
2616 | * callback can assume that |in| is syntactically valid. The client must | |
2617 | * select a protocol. It is fatal to the connection if this callback returns | |
2618 | * a value other than SSL_TLSEXT_ERR_OK. | |
2619 | */ | |
2620 | void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx, | |
2621 | SSL_CTX_npn_select_cb_func cb, | |
2622 | void *arg) | |
2623 | { | |
2624 | ctx->ext.npn_select_cb = cb; | |
2625 | ctx->ext.npn_select_cb_arg = arg; | |
2626 | } | |
2627 | #endif | |
2628 | ||
2629 | /* | |
2630 | * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. | |
2631 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2632 | * length-prefixed strings). Returns 0 on success. | |
2633 | */ | |
2634 | int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, | |
2635 | unsigned int protos_len) | |
2636 | { | |
2637 | OPENSSL_free(ctx->ext.alpn); | |
2638 | ctx->ext.alpn = OPENSSL_memdup(protos, protos_len); | |
2639 | if (ctx->ext.alpn == NULL) { | |
2640 | SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2641 | return 1; | |
2642 | } | |
2643 | ctx->ext.alpn_len = protos_len; | |
2644 | ||
2645 | return 0; | |
2646 | } | |
2647 | ||
2648 | /* | |
2649 | * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. | |
2650 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2651 | * length-prefixed strings). Returns 0 on success. | |
2652 | */ | |
2653 | int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, | |
2654 | unsigned int protos_len) | |
2655 | { | |
2656 | OPENSSL_free(ssl->ext.alpn); | |
2657 | ssl->ext.alpn = OPENSSL_memdup(protos, protos_len); | |
2658 | if (ssl->ext.alpn == NULL) { | |
2659 | SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2660 | return 1; | |
2661 | } | |
2662 | ssl->ext.alpn_len = protos_len; | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | /* | |
2668 | * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is | |
2669 | * called during ClientHello processing in order to select an ALPN protocol | |
2670 | * from the client's list of offered protocols. | |
2671 | */ | |
2672 | void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, | |
2673 | SSL_CTX_alpn_select_cb_func cb, | |
2674 | void *arg) | |
2675 | { | |
2676 | ctx->ext.alpn_select_cb = cb; | |
2677 | ctx->ext.alpn_select_cb_arg = arg; | |
2678 | } | |
2679 | ||
2680 | /* | |
2681 | * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|. | |
2682 | * On return it sets |*data| to point to |*len| bytes of protocol name | |
2683 | * (not including the leading length-prefix byte). If the server didn't | |
2684 | * respond with a negotiated protocol then |*len| will be zero. | |
2685 | */ | |
2686 | void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, | |
2687 | unsigned int *len) | |
2688 | { | |
2689 | *data = NULL; | |
2690 | if (ssl->s3) | |
2691 | *data = ssl->s3->alpn_selected; | |
2692 | if (*data == NULL) | |
2693 | *len = 0; | |
2694 | else | |
2695 | *len = (unsigned int)ssl->s3->alpn_selected_len; | |
2696 | } | |
2697 | ||
2698 | int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
2699 | const char *label, size_t llen, | |
2700 | const unsigned char *context, size_t contextlen, | |
2701 | int use_context) | |
2702 | { | |
2703 | if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) | |
2704 | return -1; | |
2705 | ||
2706 | return s->method->ssl3_enc->export_keying_material(s, out, olen, label, | |
2707 | llen, context, | |
2708 | contextlen, use_context); | |
2709 | } | |
2710 | ||
2711 | static unsigned long ssl_session_hash(const SSL_SESSION *a) | |
2712 | { | |
2713 | const unsigned char *session_id = a->session_id; | |
2714 | unsigned long l; | |
2715 | unsigned char tmp_storage[4]; | |
2716 | ||
2717 | if (a->session_id_length < sizeof(tmp_storage)) { | |
2718 | memset(tmp_storage, 0, sizeof(tmp_storage)); | |
2719 | memcpy(tmp_storage, a->session_id, a->session_id_length); | |
2720 | session_id = tmp_storage; | |
2721 | } | |
2722 | ||
2723 | l = (unsigned long) | |
2724 | ((unsigned long)session_id[0]) | | |
2725 | ((unsigned long)session_id[1] << 8L) | | |
2726 | ((unsigned long)session_id[2] << 16L) | | |
2727 | ((unsigned long)session_id[3] << 24L); | |
2728 | return (l); | |
2729 | } | |
2730 | ||
2731 | /* | |
2732 | * NB: If this function (or indeed the hash function which uses a sort of | |
2733 | * coarser function than this one) is changed, ensure | |
2734 | * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on | |
2735 | * being able to construct an SSL_SESSION that will collide with any existing | |
2736 | * session with a matching session ID. | |
2737 | */ | |
2738 | static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) | |
2739 | { | |
2740 | if (a->ssl_version != b->ssl_version) | |
2741 | return (1); | |
2742 | if (a->session_id_length != b->session_id_length) | |
2743 | return (1); | |
2744 | return (memcmp(a->session_id, b->session_id, a->session_id_length)); | |
2745 | } | |
2746 | ||
2747 | /* | |
2748 | * These wrapper functions should remain rather than redeclaring | |
2749 | * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each | |
2750 | * variable. The reason is that the functions aren't static, they're exposed | |
2751 | * via ssl.h. | |
2752 | */ | |
2753 | ||
2754 | SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) | |
2755 | { | |
2756 | SSL_CTX *ret = NULL; | |
2757 | ||
2758 | if (meth == NULL) { | |
2759 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); | |
2760 | return (NULL); | |
2761 | } | |
2762 | ||
2763 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) | |
2764 | return NULL; | |
2765 | ||
2766 | if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { | |
2767 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); | |
2768 | goto err; | |
2769 | } | |
2770 | ret = OPENSSL_zalloc(sizeof(*ret)); | |
2771 | if (ret == NULL) | |
2772 | goto err; | |
2773 | ||
2774 | ret->method = meth; | |
2775 | ret->min_proto_version = 0; | |
2776 | ret->max_proto_version = 0; | |
2777 | ret->session_cache_mode = SSL_SESS_CACHE_SERVER; | |
2778 | ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; | |
2779 | /* We take the system default. */ | |
2780 | ret->session_timeout = meth->get_timeout(); | |
2781 | ret->references = 1; | |
2782 | ret->lock = CRYPTO_THREAD_lock_new(); | |
2783 | if (ret->lock == NULL) { | |
2784 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2785 | OPENSSL_free(ret); | |
2786 | return NULL; | |
2787 | } | |
2788 | ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; | |
2789 | ret->verify_mode = SSL_VERIFY_NONE; | |
2790 | if ((ret->cert = ssl_cert_new()) == NULL) | |
2791 | goto err; | |
2792 | ||
2793 | ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp); | |
2794 | if (ret->sessions == NULL) | |
2795 | goto err; | |
2796 | ret->cert_store = X509_STORE_new(); | |
2797 | if (ret->cert_store == NULL) | |
2798 | goto err; | |
2799 | #ifndef OPENSSL_NO_CT | |
2800 | ret->ctlog_store = CTLOG_STORE_new(); | |
2801 | if (ret->ctlog_store == NULL) | |
2802 | goto err; | |
2803 | #endif | |
2804 | if (!ssl_create_cipher_list(ret->method, | |
2805 | &ret->cipher_list, &ret->cipher_list_by_id, | |
2806 | SSL_DEFAULT_CIPHER_LIST, ret->cert) | |
2807 | || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { | |
2808 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); | |
2809 | goto err2; | |
2810 | } | |
2811 | ||
2812 | ret->param = X509_VERIFY_PARAM_new(); | |
2813 | if (ret->param == NULL) | |
2814 | goto err; | |
2815 | ||
2816 | if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { | |
2817 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); | |
2818 | goto err2; | |
2819 | } | |
2820 | if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { | |
2821 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); | |
2822 | goto err2; | |
2823 | } | |
2824 | ||
2825 | if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) | |
2826 | goto err; | |
2827 | ||
2828 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) | |
2829 | goto err; | |
2830 | ||
2831 | /* No compression for DTLS */ | |
2832 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) | |
2833 | ret->comp_methods = SSL_COMP_get_compression_methods(); | |
2834 | ||
2835 | ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2836 | ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2837 | ||
2838 | /* Setup RFC5077 ticket keys */ | |
2839 | if ((RAND_bytes(ret->ext.tick_key_name, | |
2840 | sizeof(ret->ext.tick_key_name)) <= 0) | |
2841 | || (RAND_bytes(ret->ext.tick_hmac_key, | |
2842 | sizeof(ret->ext.tick_hmac_key)) <= 0) | |
2843 | || (RAND_bytes(ret->ext.tick_aes_key, | |
2844 | sizeof(ret->ext.tick_aes_key)) <= 0)) | |
2845 | ret->options |= SSL_OP_NO_TICKET; | |
2846 | ||
2847 | #ifndef OPENSSL_NO_SRP | |
2848 | if (!SSL_CTX_SRP_CTX_init(ret)) | |
2849 | goto err; | |
2850 | #endif | |
2851 | #ifndef OPENSSL_NO_ENGINE | |
2852 | # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO | |
2853 | # define eng_strx(x) #x | |
2854 | # define eng_str(x) eng_strx(x) | |
2855 | /* Use specific client engine automatically... ignore errors */ | |
2856 | { | |
2857 | ENGINE *eng; | |
2858 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2859 | if (!eng) { | |
2860 | ERR_clear_error(); | |
2861 | ENGINE_load_builtin_engines(); | |
2862 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2863 | } | |
2864 | if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) | |
2865 | ERR_clear_error(); | |
2866 | } | |
2867 | # endif | |
2868 | #endif | |
2869 | /* | |
2870 | * Default is to connect to non-RI servers. When RI is more widely | |
2871 | * deployed might change this. | |
2872 | */ | |
2873 | ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; | |
2874 | /* | |
2875 | * Disable compression by default to prevent CRIME. Applications can | |
2876 | * re-enable compression by configuring | |
2877 | * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION); | |
2878 | * or by using the SSL_CONF library. | |
2879 | */ | |
2880 | ret->options |= SSL_OP_NO_COMPRESSION; | |
2881 | ||
2882 | ret->ext.status_type = TLSEXT_STATUSTYPE_nothing; | |
2883 | ||
2884 | /* | |
2885 | * Default max early data is a fully loaded single record. Could be split | |
2886 | * across multiple records in practice | |
2887 | */ | |
2888 | ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH; | |
2889 | ||
2890 | return ret; | |
2891 | err: | |
2892 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2893 | err2: | |
2894 | SSL_CTX_free(ret); | |
2895 | return NULL; | |
2896 | } | |
2897 | ||
2898 | int SSL_CTX_up_ref(SSL_CTX *ctx) | |
2899 | { | |
2900 | int i; | |
2901 | ||
2902 | if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0) | |
2903 | return 0; | |
2904 | ||
2905 | REF_PRINT_COUNT("SSL_CTX", ctx); | |
2906 | REF_ASSERT_ISNT(i < 2); | |
2907 | return ((i > 1) ? 1 : 0); | |
2908 | } | |
2909 | ||
2910 | void SSL_CTX_free(SSL_CTX *a) | |
2911 | { | |
2912 | int i; | |
2913 | ||
2914 | if (a == NULL) | |
2915 | return; | |
2916 | ||
2917 | CRYPTO_DOWN_REF(&a->references, &i, a->lock); | |
2918 | REF_PRINT_COUNT("SSL_CTX", a); | |
2919 | if (i > 0) | |
2920 | return; | |
2921 | REF_ASSERT_ISNT(i < 0); | |
2922 | ||
2923 | X509_VERIFY_PARAM_free(a->param); | |
2924 | dane_ctx_final(&a->dane); | |
2925 | ||
2926 | /* | |
2927 | * Free internal session cache. However: the remove_cb() may reference | |
2928 | * the ex_data of SSL_CTX, thus the ex_data store can only be removed | |
2929 | * after the sessions were flushed. | |
2930 | * As the ex_data handling routines might also touch the session cache, | |
2931 | * the most secure solution seems to be: empty (flush) the cache, then | |
2932 | * free ex_data, then finally free the cache. | |
2933 | * (See ticket [openssl.org #212].) | |
2934 | */ | |
2935 | if (a->sessions != NULL) | |
2936 | SSL_CTX_flush_sessions(a, 0); | |
2937 | ||
2938 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); | |
2939 | lh_SSL_SESSION_free(a->sessions); | |
2940 | X509_STORE_free(a->cert_store); | |
2941 | #ifndef OPENSSL_NO_CT | |
2942 | CTLOG_STORE_free(a->ctlog_store); | |
2943 | #endif | |
2944 | sk_SSL_CIPHER_free(a->cipher_list); | |
2945 | sk_SSL_CIPHER_free(a->cipher_list_by_id); | |
2946 | ssl_cert_free(a->cert); | |
2947 | sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free); | |
2948 | sk_X509_pop_free(a->extra_certs, X509_free); | |
2949 | a->comp_methods = NULL; | |
2950 | #ifndef OPENSSL_NO_SRTP | |
2951 | sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); | |
2952 | #endif | |
2953 | #ifndef OPENSSL_NO_SRP | |
2954 | SSL_CTX_SRP_CTX_free(a); | |
2955 | #endif | |
2956 | #ifndef OPENSSL_NO_ENGINE | |
2957 | ENGINE_finish(a->client_cert_engine); | |
2958 | #endif | |
2959 | ||
2960 | #ifndef OPENSSL_NO_EC | |
2961 | OPENSSL_free(a->ext.ecpointformats); | |
2962 | OPENSSL_free(a->ext.supportedgroups); | |
2963 | #endif | |
2964 | OPENSSL_free(a->ext.alpn); | |
2965 | ||
2966 | CRYPTO_THREAD_lock_free(a->lock); | |
2967 | ||
2968 | OPENSSL_free(a); | |
2969 | } | |
2970 | ||
2971 | void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) | |
2972 | { | |
2973 | ctx->default_passwd_callback = cb; | |
2974 | } | |
2975 | ||
2976 | void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) | |
2977 | { | |
2978 | ctx->default_passwd_callback_userdata = u; | |
2979 | } | |
2980 | ||
2981 | pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) | |
2982 | { | |
2983 | return ctx->default_passwd_callback; | |
2984 | } | |
2985 | ||
2986 | void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) | |
2987 | { | |
2988 | return ctx->default_passwd_callback_userdata; | |
2989 | } | |
2990 | ||
2991 | void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb) | |
2992 | { | |
2993 | s->default_passwd_callback = cb; | |
2994 | } | |
2995 | ||
2996 | void SSL_set_default_passwd_cb_userdata(SSL *s, void *u) | |
2997 | { | |
2998 | s->default_passwd_callback_userdata = u; | |
2999 | } | |
3000 | ||
3001 | pem_password_cb *SSL_get_default_passwd_cb(SSL *s) | |
3002 | { | |
3003 | return s->default_passwd_callback; | |
3004 | } | |
3005 | ||
3006 | void *SSL_get_default_passwd_cb_userdata(SSL *s) | |
3007 | { | |
3008 | return s->default_passwd_callback_userdata; | |
3009 | } | |
3010 | ||
3011 | void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, | |
3012 | int (*cb) (X509_STORE_CTX *, void *), | |
3013 | void *arg) | |
3014 | { | |
3015 | ctx->app_verify_callback = cb; | |
3016 | ctx->app_verify_arg = arg; | |
3017 | } | |
3018 | ||
3019 | void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, | |
3020 | int (*cb) (int, X509_STORE_CTX *)) | |
3021 | { | |
3022 | ctx->verify_mode = mode; | |
3023 | ctx->default_verify_callback = cb; | |
3024 | } | |
3025 | ||
3026 | void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) | |
3027 | { | |
3028 | X509_VERIFY_PARAM_set_depth(ctx->param, depth); | |
3029 | } | |
3030 | ||
3031 | void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg) | |
3032 | { | |
3033 | ssl_cert_set_cert_cb(c->cert, cb, arg); | |
3034 | } | |
3035 | ||
3036 | void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) | |
3037 | { | |
3038 | ssl_cert_set_cert_cb(s->cert, cb, arg); | |
3039 | } | |
3040 | ||
3041 | void ssl_set_masks(SSL *s) | |
3042 | { | |
3043 | CERT *c = s->cert; | |
3044 | uint32_t *pvalid = s->s3->tmp.valid_flags; | |
3045 | int rsa_enc, rsa_sign, dh_tmp, dsa_sign; | |
3046 | unsigned long mask_k, mask_a; | |
3047 | #ifndef OPENSSL_NO_EC | |
3048 | int have_ecc_cert, ecdsa_ok; | |
3049 | #endif | |
3050 | if (c == NULL) | |
3051 | return; | |
3052 | ||
3053 | #ifndef OPENSSL_NO_DH | |
3054 | dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto); | |
3055 | #else | |
3056 | dh_tmp = 0; | |
3057 | #endif | |
3058 | ||
3059 | rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID; | |
3060 | rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID; | |
3061 | dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID; | |
3062 | #ifndef OPENSSL_NO_EC | |
3063 | have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID; | |
3064 | #endif | |
3065 | mask_k = 0; | |
3066 | mask_a = 0; | |
3067 | ||
3068 | #ifdef CIPHER_DEBUG | |
3069 | fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n", | |
3070 | dh_tmp, rsa_enc, rsa_sign, dsa_sign); | |
3071 | #endif | |
3072 | ||
3073 | #ifndef OPENSSL_NO_GOST | |
3074 | if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) { | |
3075 | mask_k |= SSL_kGOST; | |
3076 | mask_a |= SSL_aGOST12; | |
3077 | } | |
3078 | if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) { | |
3079 | mask_k |= SSL_kGOST; | |
3080 | mask_a |= SSL_aGOST12; | |
3081 | } | |
3082 | if (ssl_has_cert(s, SSL_PKEY_GOST01)) { | |
3083 | mask_k |= SSL_kGOST; | |
3084 | mask_a |= SSL_aGOST01; | |
3085 | } | |
3086 | #endif | |
3087 | ||
3088 | if (rsa_enc) | |
3089 | mask_k |= SSL_kRSA; | |
3090 | ||
3091 | if (dh_tmp) | |
3092 | mask_k |= SSL_kDHE; | |
3093 | ||
3094 | /* | |
3095 | * If we only have an RSA-PSS certificate allow RSA authentication | |
3096 | * if TLS 1.2 and peer supports it. | |
3097 | */ | |
3098 | ||
3099 | if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN) | |
3100 | && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN | |
3101 | && TLS1_get_version(s) == TLS1_2_VERSION)) | |
3102 | mask_a |= SSL_aRSA; | |
3103 | ||
3104 | if (dsa_sign) { | |
3105 | mask_a |= SSL_aDSS; | |
3106 | } | |
3107 | ||
3108 | mask_a |= SSL_aNULL; | |
3109 | ||
3110 | /* | |
3111 | * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites | |
3112 | * depending on the key usage extension. | |
3113 | */ | |
3114 | #ifndef OPENSSL_NO_EC | |
3115 | if (have_ecc_cert) { | |
3116 | uint32_t ex_kusage; | |
3117 | ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509); | |
3118 | ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE; | |
3119 | if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN)) | |
3120 | ecdsa_ok = 0; | |
3121 | if (ecdsa_ok) | |
3122 | mask_a |= SSL_aECDSA; | |
3123 | } | |
3124 | /* Allow Ed25519 for TLS 1.2 if peer supports it */ | |
3125 | if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519) | |
3126 | && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN | |
3127 | && TLS1_get_version(s) == TLS1_2_VERSION) | |
3128 | mask_a |= SSL_aECDSA; | |
3129 | #endif | |
3130 | ||
3131 | #ifndef OPENSSL_NO_EC | |
3132 | mask_k |= SSL_kECDHE; | |
3133 | #endif | |
3134 | ||
3135 | #ifndef OPENSSL_NO_PSK | |
3136 | mask_k |= SSL_kPSK; | |
3137 | mask_a |= SSL_aPSK; | |
3138 | if (mask_k & SSL_kRSA) | |
3139 | mask_k |= SSL_kRSAPSK; | |
3140 | if (mask_k & SSL_kDHE) | |
3141 | mask_k |= SSL_kDHEPSK; | |
3142 | if (mask_k & SSL_kECDHE) | |
3143 | mask_k |= SSL_kECDHEPSK; | |
3144 | #endif | |
3145 | ||
3146 | s->s3->tmp.mask_k = mask_k; | |
3147 | s->s3->tmp.mask_a = mask_a; | |
3148 | } | |
3149 | ||
3150 | #ifndef OPENSSL_NO_EC | |
3151 | ||
3152 | int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) | |
3153 | { | |
3154 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) { | |
3155 | /* key usage, if present, must allow signing */ | |
3156 | if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { | |
3157 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
3158 | SSL_R_ECC_CERT_NOT_FOR_SIGNING); | |
3159 | return 0; | |
3160 | } | |
3161 | } | |
3162 | return 1; /* all checks are ok */ | |
3163 | } | |
3164 | ||
3165 | #endif | |
3166 | ||
3167 | int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, | |
3168 | size_t *serverinfo_length) | |
3169 | { | |
3170 | CERT_PKEY *cpk = s->s3->tmp.cert; | |
3171 | *serverinfo_length = 0; | |
3172 | ||
3173 | if (cpk == NULL || cpk->serverinfo == NULL) | |
3174 | return 0; | |
3175 | ||
3176 | *serverinfo = cpk->serverinfo; | |
3177 | *serverinfo_length = cpk->serverinfo_length; | |
3178 | return 1; | |
3179 | } | |
3180 | ||
3181 | void ssl_update_cache(SSL *s, int mode) | |
3182 | { | |
3183 | int i; | |
3184 | ||
3185 | /* | |
3186 | * If the session_id_length is 0, we are not supposed to cache it, and it | |
3187 | * would be rather hard to do anyway :-) | |
3188 | */ | |
3189 | if (s->session->session_id_length == 0) | |
3190 | return; | |
3191 | ||
3192 | i = s->session_ctx->session_cache_mode; | |
3193 | if ((i & mode) != 0 | |
3194 | && (!s->hit || SSL_IS_TLS13(s)) | |
3195 | && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0 | |
3196 | || SSL_CTX_add_session(s->session_ctx, s->session)) | |
3197 | && s->session_ctx->new_session_cb != NULL) { | |
3198 | SSL_SESSION_up_ref(s->session); | |
3199 | if (!s->session_ctx->new_session_cb(s, s->session)) | |
3200 | SSL_SESSION_free(s->session); | |
3201 | } | |
3202 | ||
3203 | /* auto flush every 255 connections */ | |
3204 | if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { | |
3205 | if ((((mode & SSL_SESS_CACHE_CLIENT) | |
3206 | ? s->session_ctx->stats.sess_connect_good | |
3207 | : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { | |
3208 | SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); | |
3209 | } | |
3210 | } | |
3211 | } | |
3212 | ||
3213 | const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) | |
3214 | { | |
3215 | return ctx->method; | |
3216 | } | |
3217 | ||
3218 | const SSL_METHOD *SSL_get_ssl_method(SSL *s) | |
3219 | { | |
3220 | return (s->method); | |
3221 | } | |
3222 | ||
3223 | int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) | |
3224 | { | |
3225 | int ret = 1; | |
3226 | ||
3227 | if (s->method != meth) { | |
3228 | const SSL_METHOD *sm = s->method; | |
3229 | int (*hf) (SSL *) = s->handshake_func; | |
3230 | ||
3231 | if (sm->version == meth->version) | |
3232 | s->method = meth; | |
3233 | else { | |
3234 | sm->ssl_free(s); | |
3235 | s->method = meth; | |
3236 | ret = s->method->ssl_new(s); | |
3237 | } | |
3238 | ||
3239 | if (hf == sm->ssl_connect) | |
3240 | s->handshake_func = meth->ssl_connect; | |
3241 | else if (hf == sm->ssl_accept) | |
3242 | s->handshake_func = meth->ssl_accept; | |
3243 | } | |
3244 | return (ret); | |
3245 | } | |
3246 | ||
3247 | int SSL_get_error(const SSL *s, int i) | |
3248 | { | |
3249 | int reason; | |
3250 | unsigned long l; | |
3251 | BIO *bio; | |
3252 | ||
3253 | if (i > 0) | |
3254 | return (SSL_ERROR_NONE); | |
3255 | ||
3256 | /* | |
3257 | * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, | |
3258 | * where we do encode the error | |
3259 | */ | |
3260 | if ((l = ERR_peek_error()) != 0) { | |
3261 | if (ERR_GET_LIB(l) == ERR_LIB_SYS) | |
3262 | return (SSL_ERROR_SYSCALL); | |
3263 | else | |
3264 | return (SSL_ERROR_SSL); | |
3265 | } | |
3266 | ||
3267 | if (SSL_want_read(s)) { | |
3268 | bio = SSL_get_rbio(s); | |
3269 | if (BIO_should_read(bio)) | |
3270 | return (SSL_ERROR_WANT_READ); | |
3271 | else if (BIO_should_write(bio)) | |
3272 | /* | |
3273 | * This one doesn't make too much sense ... We never try to write | |
3274 | * to the rbio, and an application program where rbio and wbio | |
3275 | * are separate couldn't even know what it should wait for. | |
3276 | * However if we ever set s->rwstate incorrectly (so that we have | |
3277 | * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and | |
3278 | * wbio *are* the same, this test works around that bug; so it | |
3279 | * might be safer to keep it. | |
3280 | */ | |
3281 | return (SSL_ERROR_WANT_WRITE); | |
3282 | else if (BIO_should_io_special(bio)) { | |
3283 | reason = BIO_get_retry_reason(bio); | |
3284 | if (reason == BIO_RR_CONNECT) | |
3285 | return (SSL_ERROR_WANT_CONNECT); | |
3286 | else if (reason == BIO_RR_ACCEPT) | |
3287 | return (SSL_ERROR_WANT_ACCEPT); | |
3288 | else | |
3289 | return (SSL_ERROR_SYSCALL); /* unknown */ | |
3290 | } | |
3291 | } | |
3292 | ||
3293 | if (SSL_want_write(s)) { | |
3294 | /* Access wbio directly - in order to use the buffered bio if present */ | |
3295 | bio = s->wbio; | |
3296 | if (BIO_should_write(bio)) | |
3297 | return (SSL_ERROR_WANT_WRITE); | |
3298 | else if (BIO_should_read(bio)) | |
3299 | /* | |
3300 | * See above (SSL_want_read(s) with BIO_should_write(bio)) | |
3301 | */ | |
3302 | return (SSL_ERROR_WANT_READ); | |
3303 | else if (BIO_should_io_special(bio)) { | |
3304 | reason = BIO_get_retry_reason(bio); | |
3305 | if (reason == BIO_RR_CONNECT) | |
3306 | return (SSL_ERROR_WANT_CONNECT); | |
3307 | else if (reason == BIO_RR_ACCEPT) | |
3308 | return (SSL_ERROR_WANT_ACCEPT); | |
3309 | else | |
3310 | return (SSL_ERROR_SYSCALL); | |
3311 | } | |
3312 | } | |
3313 | if (SSL_want_x509_lookup(s)) | |
3314 | return (SSL_ERROR_WANT_X509_LOOKUP); | |
3315 | if (SSL_want_async(s)) | |
3316 | return SSL_ERROR_WANT_ASYNC; | |
3317 | if (SSL_want_async_job(s)) | |
3318 | return SSL_ERROR_WANT_ASYNC_JOB; | |
3319 | if (SSL_want_client_hello_cb(s)) | |
3320 | return SSL_ERROR_WANT_CLIENT_HELLO_CB; | |
3321 | ||
3322 | if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && | |
3323 | (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) | |
3324 | return (SSL_ERROR_ZERO_RETURN); | |
3325 | ||
3326 | return (SSL_ERROR_SYSCALL); | |
3327 | } | |
3328 | ||
3329 | static int ssl_do_handshake_intern(void *vargs) | |
3330 | { | |
3331 | struct ssl_async_args *args; | |
3332 | SSL *s; | |
3333 | ||
3334 | args = (struct ssl_async_args *)vargs; | |
3335 | s = args->s; | |
3336 | ||
3337 | return s->handshake_func(s); | |
3338 | } | |
3339 | ||
3340 | int SSL_do_handshake(SSL *s) | |
3341 | { | |
3342 | int ret = 1; | |
3343 | ||
3344 | if (s->handshake_func == NULL) { | |
3345 | SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); | |
3346 | return -1; | |
3347 | } | |
3348 | ||
3349 | ossl_statem_check_finish_init(s, -1); | |
3350 | ||
3351 | s->method->ssl_renegotiate_check(s, 0); | |
3352 | ||
3353 | if (SSL_is_server(s)) { | |
3354 | /* clear SNI settings at server-side */ | |
3355 | OPENSSL_free(s->ext.hostname); | |
3356 | s->ext.hostname = NULL; | |
3357 | } | |
3358 | ||
3359 | if (SSL_in_init(s) || SSL_in_before(s)) { | |
3360 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
3361 | struct ssl_async_args args; | |
3362 | ||
3363 | args.s = s; | |
3364 | ||
3365 | ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern); | |
3366 | } else { | |
3367 | ret = s->handshake_func(s); | |
3368 | } | |
3369 | } | |
3370 | return ret; | |
3371 | } | |
3372 | ||
3373 | void SSL_set_accept_state(SSL *s) | |
3374 | { | |
3375 | s->server = 1; | |
3376 | s->shutdown = 0; | |
3377 | ossl_statem_clear(s); | |
3378 | s->handshake_func = s->method->ssl_accept; | |
3379 | clear_ciphers(s); | |
3380 | } | |
3381 | ||
3382 | void SSL_set_connect_state(SSL *s) | |
3383 | { | |
3384 | s->server = 0; | |
3385 | s->shutdown = 0; | |
3386 | ossl_statem_clear(s); | |
3387 | s->handshake_func = s->method->ssl_connect; | |
3388 | clear_ciphers(s); | |
3389 | } | |
3390 | ||
3391 | int ssl_undefined_function(SSL *s) | |
3392 | { | |
3393 | SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3394 | return (0); | |
3395 | } | |
3396 | ||
3397 | int ssl_undefined_void_function(void) | |
3398 | { | |
3399 | SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, | |
3400 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3401 | return (0); | |
3402 | } | |
3403 | ||
3404 | int ssl_undefined_const_function(const SSL *s) | |
3405 | { | |
3406 | return (0); | |
3407 | } | |
3408 | ||
3409 | const SSL_METHOD *ssl_bad_method(int ver) | |
3410 | { | |
3411 | SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3412 | return (NULL); | |
3413 | } | |
3414 | ||
3415 | const char *ssl_protocol_to_string(int version) | |
3416 | { | |
3417 | switch(version) | |
3418 | { | |
3419 | case TLS1_3_VERSION: | |
3420 | return "TLSv1.3"; | |
3421 | ||
3422 | case TLS1_2_VERSION: | |
3423 | return "TLSv1.2"; | |
3424 | ||
3425 | case TLS1_1_VERSION: | |
3426 | return "TLSv1.1"; | |
3427 | ||
3428 | case TLS1_VERSION: | |
3429 | return "TLSv1"; | |
3430 | ||
3431 | case SSL3_VERSION: | |
3432 | return "SSLv3"; | |
3433 | ||
3434 | case DTLS1_BAD_VER: | |
3435 | return "DTLSv0.9"; | |
3436 | ||
3437 | case DTLS1_VERSION: | |
3438 | return "DTLSv1"; | |
3439 | ||
3440 | case DTLS1_2_VERSION: | |
3441 | return "DTLSv1.2"; | |
3442 | ||
3443 | default: | |
3444 | return "unknown"; | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | const char *SSL_get_version(const SSL *s) | |
3449 | { | |
3450 | return ssl_protocol_to_string(s->version); | |
3451 | } | |
3452 | ||
3453 | SSL *SSL_dup(SSL *s) | |
3454 | { | |
3455 | STACK_OF(X509_NAME) *sk; | |
3456 | X509_NAME *xn; | |
3457 | SSL *ret; | |
3458 | int i; | |
3459 | ||
3460 | /* If we're not quiescent, just up_ref! */ | |
3461 | if (!SSL_in_init(s) || !SSL_in_before(s)) { | |
3462 | CRYPTO_UP_REF(&s->references, &i, s->lock); | |
3463 | return s; | |
3464 | } | |
3465 | ||
3466 | /* | |
3467 | * Otherwise, copy configuration state, and session if set. | |
3468 | */ | |
3469 | if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) | |
3470 | return (NULL); | |
3471 | ||
3472 | if (s->session != NULL) { | |
3473 | /* | |
3474 | * Arranges to share the same session via up_ref. This "copies" | |
3475 | * session-id, SSL_METHOD, sid_ctx, and 'cert' | |
3476 | */ | |
3477 | if (!SSL_copy_session_id(ret, s)) | |
3478 | goto err; | |
3479 | } else { | |
3480 | /* | |
3481 | * No session has been established yet, so we have to expect that | |
3482 | * s->cert or ret->cert will be changed later -- they should not both | |
3483 | * point to the same object, and thus we can't use | |
3484 | * SSL_copy_session_id. | |
3485 | */ | |
3486 | if (!SSL_set_ssl_method(ret, s->method)) | |
3487 | goto err; | |
3488 | ||
3489 | if (s->cert != NULL) { | |
3490 | ssl_cert_free(ret->cert); | |
3491 | ret->cert = ssl_cert_dup(s->cert); | |
3492 | if (ret->cert == NULL) | |
3493 | goto err; | |
3494 | } | |
3495 | ||
3496 | if (!SSL_set_session_id_context(ret, s->sid_ctx, | |
3497 | (int)s->sid_ctx_length)) | |
3498 | goto err; | |
3499 | } | |
3500 | ||
3501 | if (!ssl_dane_dup(ret, s)) | |
3502 | goto err; | |
3503 | ret->version = s->version; | |
3504 | ret->options = s->options; | |
3505 | ret->mode = s->mode; | |
3506 | SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); | |
3507 | SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); | |
3508 | ret->msg_callback = s->msg_callback; | |
3509 | ret->msg_callback_arg = s->msg_callback_arg; | |
3510 | SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); | |
3511 | SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); | |
3512 | ret->generate_session_id = s->generate_session_id; | |
3513 | ||
3514 | SSL_set_info_callback(ret, SSL_get_info_callback(s)); | |
3515 | ||
3516 | /* copy app data, a little dangerous perhaps */ | |
3517 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) | |
3518 | goto err; | |
3519 | ||
3520 | /* setup rbio, and wbio */ | |
3521 | if (s->rbio != NULL) { | |
3522 | if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) | |
3523 | goto err; | |
3524 | } | |
3525 | if (s->wbio != NULL) { | |
3526 | if (s->wbio != s->rbio) { | |
3527 | if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) | |
3528 | goto err; | |
3529 | } else { | |
3530 | BIO_up_ref(ret->rbio); | |
3531 | ret->wbio = ret->rbio; | |
3532 | } | |
3533 | } | |
3534 | ||
3535 | ret->server = s->server; | |
3536 | if (s->handshake_func) { | |
3537 | if (s->server) | |
3538 | SSL_set_accept_state(ret); | |
3539 | else | |
3540 | SSL_set_connect_state(ret); | |
3541 | } | |
3542 | ret->shutdown = s->shutdown; | |
3543 | ret->hit = s->hit; | |
3544 | ||
3545 | ret->default_passwd_callback = s->default_passwd_callback; | |
3546 | ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata; | |
3547 | ||
3548 | X509_VERIFY_PARAM_inherit(ret->param, s->param); | |
3549 | ||
3550 | /* dup the cipher_list and cipher_list_by_id stacks */ | |
3551 | if (s->cipher_list != NULL) { | |
3552 | if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) | |
3553 | goto err; | |
3554 | } | |
3555 | if (s->cipher_list_by_id != NULL) | |
3556 | if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) | |
3557 | == NULL) | |
3558 | goto err; | |
3559 | ||
3560 | /* Dup the client_CA list */ | |
3561 | if (s->ca_names != NULL) { | |
3562 | if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL) | |
3563 | goto err; | |
3564 | ret->ca_names = sk; | |
3565 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
3566 | xn = sk_X509_NAME_value(sk, i); | |
3567 | if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { | |
3568 | X509_NAME_free(xn); | |
3569 | goto err; | |
3570 | } | |
3571 | } | |
3572 | } | |
3573 | return ret; | |
3574 | ||
3575 | err: | |
3576 | SSL_free(ret); | |
3577 | return NULL; | |
3578 | } | |
3579 | ||
3580 | void ssl_clear_cipher_ctx(SSL *s) | |
3581 | { | |
3582 | if (s->enc_read_ctx != NULL) { | |
3583 | EVP_CIPHER_CTX_free(s->enc_read_ctx); | |
3584 | s->enc_read_ctx = NULL; | |
3585 | } | |
3586 | if (s->enc_write_ctx != NULL) { | |
3587 | EVP_CIPHER_CTX_free(s->enc_write_ctx); | |
3588 | s->enc_write_ctx = NULL; | |
3589 | } | |
3590 | #ifndef OPENSSL_NO_COMP | |
3591 | COMP_CTX_free(s->expand); | |
3592 | s->expand = NULL; | |
3593 | COMP_CTX_free(s->compress); | |
3594 | s->compress = NULL; | |
3595 | #endif | |
3596 | } | |
3597 | ||
3598 | X509 *SSL_get_certificate(const SSL *s) | |
3599 | { | |
3600 | if (s->cert != NULL) | |
3601 | return (s->cert->key->x509); | |
3602 | else | |
3603 | return (NULL); | |
3604 | } | |
3605 | ||
3606 | EVP_PKEY *SSL_get_privatekey(const SSL *s) | |
3607 | { | |
3608 | if (s->cert != NULL) | |
3609 | return (s->cert->key->privatekey); | |
3610 | else | |
3611 | return (NULL); | |
3612 | } | |
3613 | ||
3614 | X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) | |
3615 | { | |
3616 | if (ctx->cert != NULL) | |
3617 | return ctx->cert->key->x509; | |
3618 | else | |
3619 | return NULL; | |
3620 | } | |
3621 | ||
3622 | EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) | |
3623 | { | |
3624 | if (ctx->cert != NULL) | |
3625 | return ctx->cert->key->privatekey; | |
3626 | else | |
3627 | return NULL; | |
3628 | } | |
3629 | ||
3630 | const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) | |
3631 | { | |
3632 | if ((s->session != NULL) && (s->session->cipher != NULL)) | |
3633 | return (s->session->cipher); | |
3634 | return (NULL); | |
3635 | } | |
3636 | ||
3637 | const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s) | |
3638 | { | |
3639 | return s->s3->tmp.new_cipher; | |
3640 | } | |
3641 | ||
3642 | const COMP_METHOD *SSL_get_current_compression(SSL *s) | |
3643 | { | |
3644 | #ifndef OPENSSL_NO_COMP | |
3645 | return s->compress ? COMP_CTX_get_method(s->compress) : NULL; | |
3646 | #else | |
3647 | return NULL; | |
3648 | #endif | |
3649 | } | |
3650 | ||
3651 | const COMP_METHOD *SSL_get_current_expansion(SSL *s) | |
3652 | { | |
3653 | #ifndef OPENSSL_NO_COMP | |
3654 | return s->expand ? COMP_CTX_get_method(s->expand) : NULL; | |
3655 | #else | |
3656 | return NULL; | |
3657 | #endif | |
3658 | } | |
3659 | ||
3660 | int ssl_init_wbio_buffer(SSL *s) | |
3661 | { | |
3662 | BIO *bbio; | |
3663 | ||
3664 | if (s->bbio != NULL) { | |
3665 | /* Already buffered. */ | |
3666 | return 1; | |
3667 | } | |
3668 | ||
3669 | bbio = BIO_new(BIO_f_buffer()); | |
3670 | if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) { | |
3671 | BIO_free(bbio); | |
3672 | SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); | |
3673 | return 0; | |
3674 | } | |
3675 | s->bbio = bbio; | |
3676 | s->wbio = BIO_push(bbio, s->wbio); | |
3677 | ||
3678 | return 1; | |
3679 | } | |
3680 | ||
3681 | int ssl_free_wbio_buffer(SSL *s) | |
3682 | { | |
3683 | /* callers ensure s is never null */ | |
3684 | if (s->bbio == NULL) | |
3685 | return 1; | |
3686 | ||
3687 | s->wbio = BIO_pop(s->wbio); | |
3688 | if (!ossl_assert(s->wbio != NULL)) | |
3689 | return 0; | |
3690 | BIO_free(s->bbio); | |
3691 | s->bbio = NULL; | |
3692 | ||
3693 | return 1; | |
3694 | } | |
3695 | ||
3696 | void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) | |
3697 | { | |
3698 | ctx->quiet_shutdown = mode; | |
3699 | } | |
3700 | ||
3701 | int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) | |
3702 | { | |
3703 | return (ctx->quiet_shutdown); | |
3704 | } | |
3705 | ||
3706 | void SSL_set_quiet_shutdown(SSL *s, int mode) | |
3707 | { | |
3708 | s->quiet_shutdown = mode; | |
3709 | } | |
3710 | ||
3711 | int SSL_get_quiet_shutdown(const SSL *s) | |
3712 | { | |
3713 | return (s->quiet_shutdown); | |
3714 | } | |
3715 | ||
3716 | void SSL_set_shutdown(SSL *s, int mode) | |
3717 | { | |
3718 | s->shutdown = mode; | |
3719 | } | |
3720 | ||
3721 | int SSL_get_shutdown(const SSL *s) | |
3722 | { | |
3723 | return s->shutdown; | |
3724 | } | |
3725 | ||
3726 | int SSL_version(const SSL *s) | |
3727 | { | |
3728 | return s->version; | |
3729 | } | |
3730 | ||
3731 | int SSL_client_version(const SSL *s) | |
3732 | { | |
3733 | return s->client_version; | |
3734 | } | |
3735 | ||
3736 | SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) | |
3737 | { | |
3738 | return ssl->ctx; | |
3739 | } | |
3740 | ||
3741 | SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) | |
3742 | { | |
3743 | CERT *new_cert; | |
3744 | if (ssl->ctx == ctx) | |
3745 | return ssl->ctx; | |
3746 | if (ctx == NULL) | |
3747 | ctx = ssl->session_ctx; | |
3748 | new_cert = ssl_cert_dup(ctx->cert); | |
3749 | if (new_cert == NULL) { | |
3750 | return NULL; | |
3751 | } | |
3752 | ||
3753 | if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) { | |
3754 | ssl_cert_free(new_cert); | |
3755 | return NULL; | |
3756 | } | |
3757 | ||
3758 | ssl_cert_free(ssl->cert); | |
3759 | ssl->cert = new_cert; | |
3760 | ||
3761 | /* | |
3762 | * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), | |
3763 | * so setter APIs must prevent invalid lengths from entering the system. | |
3764 | */ | |
3765 | if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx))) | |
3766 | return NULL; | |
3767 | ||
3768 | /* | |
3769 | * If the session ID context matches that of the parent SSL_CTX, | |
3770 | * inherit it from the new SSL_CTX as well. If however the context does | |
3771 | * not match (i.e., it was set per-ssl with SSL_set_session_id_context), | |
3772 | * leave it unchanged. | |
3773 | */ | |
3774 | if ((ssl->ctx != NULL) && | |
3775 | (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && | |
3776 | (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { | |
3777 | ssl->sid_ctx_length = ctx->sid_ctx_length; | |
3778 | memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); | |
3779 | } | |
3780 | ||
3781 | SSL_CTX_up_ref(ctx); | |
3782 | SSL_CTX_free(ssl->ctx); /* decrement reference count */ | |
3783 | ssl->ctx = ctx; | |
3784 | ||
3785 | return ssl->ctx; | |
3786 | } | |
3787 | ||
3788 | int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) | |
3789 | { | |
3790 | return (X509_STORE_set_default_paths(ctx->cert_store)); | |
3791 | } | |
3792 | ||
3793 | int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx) | |
3794 | { | |
3795 | X509_LOOKUP *lookup; | |
3796 | ||
3797 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir()); | |
3798 | if (lookup == NULL) | |
3799 | return 0; | |
3800 | X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3801 | ||
3802 | /* Clear any errors if the default directory does not exist */ | |
3803 | ERR_clear_error(); | |
3804 | ||
3805 | return 1; | |
3806 | } | |
3807 | ||
3808 | int SSL_CTX_set_default_verify_file(SSL_CTX *ctx) | |
3809 | { | |
3810 | X509_LOOKUP *lookup; | |
3811 | ||
3812 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file()); | |
3813 | if (lookup == NULL) | |
3814 | return 0; | |
3815 | ||
3816 | X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3817 | ||
3818 | /* Clear any errors if the default file does not exist */ | |
3819 | ERR_clear_error(); | |
3820 | ||
3821 | return 1; | |
3822 | } | |
3823 | ||
3824 | int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, | |
3825 | const char *CApath) | |
3826 | { | |
3827 | return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); | |
3828 | } | |
3829 | ||
3830 | void SSL_set_info_callback(SSL *ssl, | |
3831 | void (*cb) (const SSL *ssl, int type, int val)) | |
3832 | { | |
3833 | ssl->info_callback = cb; | |
3834 | } | |
3835 | ||
3836 | /* | |
3837 | * One compiler (Diab DCC) doesn't like argument names in returned function | |
3838 | * pointer. | |
3839 | */ | |
3840 | void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , | |
3841 | int /* type */ , | |
3842 | int /* val */ ) { | |
3843 | return ssl->info_callback; | |
3844 | } | |
3845 | ||
3846 | void SSL_set_verify_result(SSL *ssl, long arg) | |
3847 | { | |
3848 | ssl->verify_result = arg; | |
3849 | } | |
3850 | ||
3851 | long SSL_get_verify_result(const SSL *ssl) | |
3852 | { | |
3853 | return (ssl->verify_result); | |
3854 | } | |
3855 | ||
3856 | size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3857 | { | |
3858 | if (outlen == 0) | |
3859 | return sizeof(ssl->s3->client_random); | |
3860 | if (outlen > sizeof(ssl->s3->client_random)) | |
3861 | outlen = sizeof(ssl->s3->client_random); | |
3862 | memcpy(out, ssl->s3->client_random, outlen); | |
3863 | return outlen; | |
3864 | } | |
3865 | ||
3866 | size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3867 | { | |
3868 | if (outlen == 0) | |
3869 | return sizeof(ssl->s3->server_random); | |
3870 | if (outlen > sizeof(ssl->s3->server_random)) | |
3871 | outlen = sizeof(ssl->s3->server_random); | |
3872 | memcpy(out, ssl->s3->server_random, outlen); | |
3873 | return outlen; | |
3874 | } | |
3875 | ||
3876 | size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, | |
3877 | unsigned char *out, size_t outlen) | |
3878 | { | |
3879 | if (outlen == 0) | |
3880 | return session->master_key_length; | |
3881 | if (outlen > session->master_key_length) | |
3882 | outlen = session->master_key_length; | |
3883 | memcpy(out, session->master_key, outlen); | |
3884 | return outlen; | |
3885 | } | |
3886 | ||
3887 | int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in, | |
3888 | size_t len) | |
3889 | { | |
3890 | if (len > sizeof(sess->master_key)) | |
3891 | return 0; | |
3892 | ||
3893 | memcpy(sess->master_key, in, len); | |
3894 | sess->master_key_length = len; | |
3895 | return 1; | |
3896 | } | |
3897 | ||
3898 | ||
3899 | int SSL_set_ex_data(SSL *s, int idx, void *arg) | |
3900 | { | |
3901 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3902 | } | |
3903 | ||
3904 | void *SSL_get_ex_data(const SSL *s, int idx) | |
3905 | { | |
3906 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3907 | } | |
3908 | ||
3909 | int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) | |
3910 | { | |
3911 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3912 | } | |
3913 | ||
3914 | void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) | |
3915 | { | |
3916 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3917 | } | |
3918 | ||
3919 | X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) | |
3920 | { | |
3921 | return (ctx->cert_store); | |
3922 | } | |
3923 | ||
3924 | void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
3925 | { | |
3926 | X509_STORE_free(ctx->cert_store); | |
3927 | ctx->cert_store = store; | |
3928 | } | |
3929 | ||
3930 | void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
3931 | { | |
3932 | if (store != NULL) | |
3933 | X509_STORE_up_ref(store); | |
3934 | SSL_CTX_set_cert_store(ctx, store); | |
3935 | } | |
3936 | ||
3937 | int SSL_want(const SSL *s) | |
3938 | { | |
3939 | return (s->rwstate); | |
3940 | } | |
3941 | ||
3942 | /** | |
3943 | * \brief Set the callback for generating temporary DH keys. | |
3944 | * \param ctx the SSL context. | |
3945 | * \param dh the callback | |
3946 | */ | |
3947 | ||
3948 | #ifndef OPENSSL_NO_DH | |
3949 | void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, | |
3950 | DH *(*dh) (SSL *ssl, int is_export, | |
3951 | int keylength)) | |
3952 | { | |
3953 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3954 | } | |
3955 | ||
3956 | void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, | |
3957 | int keylength)) | |
3958 | { | |
3959 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3960 | } | |
3961 | #endif | |
3962 | ||
3963 | #ifndef OPENSSL_NO_PSK | |
3964 | int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) | |
3965 | { | |
3966 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3967 | SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3968 | return 0; | |
3969 | } | |
3970 | OPENSSL_free(ctx->cert->psk_identity_hint); | |
3971 | if (identity_hint != NULL) { | |
3972 | ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3973 | if (ctx->cert->psk_identity_hint == NULL) | |
3974 | return 0; | |
3975 | } else | |
3976 | ctx->cert->psk_identity_hint = NULL; | |
3977 | return 1; | |
3978 | } | |
3979 | ||
3980 | int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) | |
3981 | { | |
3982 | if (s == NULL) | |
3983 | return 0; | |
3984 | ||
3985 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3986 | SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3987 | return 0; | |
3988 | } | |
3989 | OPENSSL_free(s->cert->psk_identity_hint); | |
3990 | if (identity_hint != NULL) { | |
3991 | s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3992 | if (s->cert->psk_identity_hint == NULL) | |
3993 | return 0; | |
3994 | } else | |
3995 | s->cert->psk_identity_hint = NULL; | |
3996 | return 1; | |
3997 | } | |
3998 | ||
3999 | const char *SSL_get_psk_identity_hint(const SSL *s) | |
4000 | { | |
4001 | if (s == NULL || s->session == NULL) | |
4002 | return NULL; | |
4003 | return (s->session->psk_identity_hint); | |
4004 | } | |
4005 | ||
4006 | const char *SSL_get_psk_identity(const SSL *s) | |
4007 | { | |
4008 | if (s == NULL || s->session == NULL) | |
4009 | return NULL; | |
4010 | return (s->session->psk_identity); | |
4011 | } | |
4012 | ||
4013 | void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb) | |
4014 | { | |
4015 | s->psk_client_callback = cb; | |
4016 | } | |
4017 | ||
4018 | void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb) | |
4019 | { | |
4020 | ctx->psk_client_callback = cb; | |
4021 | } | |
4022 | ||
4023 | void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb) | |
4024 | { | |
4025 | s->psk_server_callback = cb; | |
4026 | } | |
4027 | ||
4028 | void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb) | |
4029 | { | |
4030 | ctx->psk_server_callback = cb; | |
4031 | } | |
4032 | #endif | |
4033 | ||
4034 | void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb) | |
4035 | { | |
4036 | s->psk_find_session_cb = cb; | |
4037 | } | |
4038 | ||
4039 | void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx, | |
4040 | SSL_psk_find_session_cb_func cb) | |
4041 | { | |
4042 | ctx->psk_find_session_cb = cb; | |
4043 | } | |
4044 | ||
4045 | void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) | |
4046 | { | |
4047 | s->psk_use_session_cb = cb; | |
4048 | } | |
4049 | ||
4050 | void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx, | |
4051 | SSL_psk_use_session_cb_func cb) | |
4052 | { | |
4053 | ctx->psk_use_session_cb = cb; | |
4054 | } | |
4055 | ||
4056 | void SSL_CTX_set_msg_callback(SSL_CTX *ctx, | |
4057 | void (*cb) (int write_p, int version, | |
4058 | int content_type, const void *buf, | |
4059 | size_t len, SSL *ssl, void *arg)) | |
4060 | { | |
4061 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
4062 | } | |
4063 | ||
4064 | void SSL_set_msg_callback(SSL *ssl, | |
4065 | void (*cb) (int write_p, int version, | |
4066 | int content_type, const void *buf, | |
4067 | size_t len, SSL *ssl, void *arg)) | |
4068 | { | |
4069 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
4070 | } | |
4071 | ||
4072 | void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, | |
4073 | int (*cb) (SSL *ssl, | |
4074 | int | |
4075 | is_forward_secure)) | |
4076 | { | |
4077 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
4078 | (void (*)(void))cb); | |
4079 | } | |
4080 | ||
4081 | void SSL_set_not_resumable_session_callback(SSL *ssl, | |
4082 | int (*cb) (SSL *ssl, | |
4083 | int is_forward_secure)) | |
4084 | { | |
4085 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
4086 | (void (*)(void))cb); | |
4087 | } | |
4088 | ||
4089 | void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx, | |
4090 | size_t (*cb) (SSL *ssl, int type, | |
4091 | size_t len, void *arg)) | |
4092 | { | |
4093 | ctx->record_padding_cb = cb; | |
4094 | } | |
4095 | ||
4096 | void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg) | |
4097 | { | |
4098 | ctx->record_padding_arg = arg; | |
4099 | } | |
4100 | ||
4101 | void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx) | |
4102 | { | |
4103 | return ctx->record_padding_arg; | |
4104 | } | |
4105 | ||
4106 | int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size) | |
4107 | { | |
4108 | /* block size of 0 or 1 is basically no padding */ | |
4109 | if (block_size == 1) | |
4110 | ctx->block_padding = 0; | |
4111 | else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH) | |
4112 | ctx->block_padding = block_size; | |
4113 | else | |
4114 | return 0; | |
4115 | return 1; | |
4116 | } | |
4117 | ||
4118 | void SSL_set_record_padding_callback(SSL *ssl, | |
4119 | size_t (*cb) (SSL *ssl, int type, | |
4120 | size_t len, void *arg)) | |
4121 | { | |
4122 | ssl->record_padding_cb = cb; | |
4123 | } | |
4124 | ||
4125 | void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg) | |
4126 | { | |
4127 | ssl->record_padding_arg = arg; | |
4128 | } | |
4129 | ||
4130 | void *SSL_get_record_padding_callback_arg(SSL *ssl) | |
4131 | { | |
4132 | return ssl->record_padding_arg; | |
4133 | } | |
4134 | ||
4135 | int SSL_set_block_padding(SSL *ssl, size_t block_size) | |
4136 | { | |
4137 | /* block size of 0 or 1 is basically no padding */ | |
4138 | if (block_size == 1) | |
4139 | ssl->block_padding = 0; | |
4140 | else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH) | |
4141 | ssl->block_padding = block_size; | |
4142 | else | |
4143 | return 0; | |
4144 | return 1; | |
4145 | } | |
4146 | ||
4147 | /* | |
4148 | * Allocates new EVP_MD_CTX and sets pointer to it into given pointer | |
4149 | * variable, freeing EVP_MD_CTX previously stored in that variable, if any. | |
4150 | * If EVP_MD pointer is passed, initializes ctx with this |md|. | |
4151 | * Returns the newly allocated ctx; | |
4152 | */ | |
4153 | ||
4154 | EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) | |
4155 | { | |
4156 | ssl_clear_hash_ctx(hash); | |
4157 | *hash = EVP_MD_CTX_new(); | |
4158 | if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { | |
4159 | EVP_MD_CTX_free(*hash); | |
4160 | *hash = NULL; | |
4161 | return NULL; | |
4162 | } | |
4163 | return *hash; | |
4164 | } | |
4165 | ||
4166 | void ssl_clear_hash_ctx(EVP_MD_CTX **hash) | |
4167 | { | |
4168 | ||
4169 | EVP_MD_CTX_free(*hash); | |
4170 | *hash = NULL; | |
4171 | } | |
4172 | ||
4173 | /* Retrieve handshake hashes */ | |
4174 | int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, | |
4175 | size_t *hashlen) | |
4176 | { | |
4177 | EVP_MD_CTX *ctx = NULL; | |
4178 | EVP_MD_CTX *hdgst = s->s3->handshake_dgst; | |
4179 | int hashleni = EVP_MD_CTX_size(hdgst); | |
4180 | int ret = 0; | |
4181 | ||
4182 | if (hashleni < 0 || (size_t)hashleni > outlen) | |
4183 | goto err; | |
4184 | ||
4185 | ctx = EVP_MD_CTX_new(); | |
4186 | if (ctx == NULL) | |
4187 | goto err; | |
4188 | ||
4189 | if (!EVP_MD_CTX_copy_ex(ctx, hdgst) | |
4190 | || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) | |
4191 | goto err; | |
4192 | ||
4193 | *hashlen = hashleni; | |
4194 | ||
4195 | ret = 1; | |
4196 | err: | |
4197 | EVP_MD_CTX_free(ctx); | |
4198 | return ret; | |
4199 | } | |
4200 | ||
4201 | int SSL_session_reused(SSL *s) | |
4202 | { | |
4203 | return s->hit; | |
4204 | } | |
4205 | ||
4206 | int SSL_is_server(const SSL *s) | |
4207 | { | |
4208 | return s->server; | |
4209 | } | |
4210 | ||
4211 | #if OPENSSL_API_COMPAT < 0x10100000L | |
4212 | void SSL_set_debug(SSL *s, int debug) | |
4213 | { | |
4214 | /* Old function was do-nothing anyway... */ | |
4215 | (void)s; | |
4216 | (void)debug; | |
4217 | } | |
4218 | #endif | |
4219 | ||
4220 | void SSL_set_security_level(SSL *s, int level) | |
4221 | { | |
4222 | s->cert->sec_level = level; | |
4223 | } | |
4224 | ||
4225 | int SSL_get_security_level(const SSL *s) | |
4226 | { | |
4227 | return s->cert->sec_level; | |
4228 | } | |
4229 | ||
4230 | void SSL_set_security_callback(SSL *s, | |
4231 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
4232 | int op, int bits, int nid, | |
4233 | void *other, void *ex)) | |
4234 | { | |
4235 | s->cert->sec_cb = cb; | |
4236 | } | |
4237 | ||
4238 | int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, | |
4239 | const SSL_CTX *ctx, int op, | |
4240 | int bits, int nid, void *other, | |
4241 | void *ex) { | |
4242 | return s->cert->sec_cb; | |
4243 | } | |
4244 | ||
4245 | void SSL_set0_security_ex_data(SSL *s, void *ex) | |
4246 | { | |
4247 | s->cert->sec_ex = ex; | |
4248 | } | |
4249 | ||
4250 | void *SSL_get0_security_ex_data(const SSL *s) | |
4251 | { | |
4252 | return s->cert->sec_ex; | |
4253 | } | |
4254 | ||
4255 | void SSL_CTX_set_security_level(SSL_CTX *ctx, int level) | |
4256 | { | |
4257 | ctx->cert->sec_level = level; | |
4258 | } | |
4259 | ||
4260 | int SSL_CTX_get_security_level(const SSL_CTX *ctx) | |
4261 | { | |
4262 | return ctx->cert->sec_level; | |
4263 | } | |
4264 | ||
4265 | void SSL_CTX_set_security_callback(SSL_CTX *ctx, | |
4266 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
4267 | int op, int bits, int nid, | |
4268 | void *other, void *ex)) | |
4269 | { | |
4270 | ctx->cert->sec_cb = cb; | |
4271 | } | |
4272 | ||
4273 | int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s, | |
4274 | const SSL_CTX *ctx, | |
4275 | int op, int bits, | |
4276 | int nid, | |
4277 | void *other, | |
4278 | void *ex) { | |
4279 | return ctx->cert->sec_cb; | |
4280 | } | |
4281 | ||
4282 | void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex) | |
4283 | { | |
4284 | ctx->cert->sec_ex = ex; | |
4285 | } | |
4286 | ||
4287 | void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx) | |
4288 | { | |
4289 | return ctx->cert->sec_ex; | |
4290 | } | |
4291 | ||
4292 | /* | |
4293 | * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that | |
4294 | * can return unsigned long, instead of the generic long return value from the | |
4295 | * control interface. | |
4296 | */ | |
4297 | unsigned long SSL_CTX_get_options(const SSL_CTX *ctx) | |
4298 | { | |
4299 | return ctx->options; | |
4300 | } | |
4301 | ||
4302 | unsigned long SSL_get_options(const SSL *s) | |
4303 | { | |
4304 | return s->options; | |
4305 | } | |
4306 | ||
4307 | unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op) | |
4308 | { | |
4309 | return ctx->options |= op; | |
4310 | } | |
4311 | ||
4312 | unsigned long SSL_set_options(SSL *s, unsigned long op) | |
4313 | { | |
4314 | return s->options |= op; | |
4315 | } | |
4316 | ||
4317 | unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op) | |
4318 | { | |
4319 | return ctx->options &= ~op; | |
4320 | } | |
4321 | ||
4322 | unsigned long SSL_clear_options(SSL *s, unsigned long op) | |
4323 | { | |
4324 | return s->options &= ~op; | |
4325 | } | |
4326 | ||
4327 | STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s) | |
4328 | { | |
4329 | return s->verified_chain; | |
4330 | } | |
4331 | ||
4332 | IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); | |
4333 | ||
4334 | #ifndef OPENSSL_NO_CT | |
4335 | ||
4336 | /* | |
4337 | * Moves SCTs from the |src| stack to the |dst| stack. | |
4338 | * The source of each SCT will be set to |origin|. | |
4339 | * If |dst| points to a NULL pointer, a new stack will be created and owned by | |
4340 | * the caller. | |
4341 | * Returns the number of SCTs moved, or a negative integer if an error occurs. | |
4342 | */ | |
4343 | static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, | |
4344 | sct_source_t origin) | |
4345 | { | |
4346 | int scts_moved = 0; | |
4347 | SCT *sct = NULL; | |
4348 | ||
4349 | if (*dst == NULL) { | |
4350 | *dst = sk_SCT_new_null(); | |
4351 | if (*dst == NULL) { | |
4352 | SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE); | |
4353 | goto err; | |
4354 | } | |
4355 | } | |
4356 | ||
4357 | while ((sct = sk_SCT_pop(src)) != NULL) { | |
4358 | if (SCT_set_source(sct, origin) != 1) | |
4359 | goto err; | |
4360 | ||
4361 | if (sk_SCT_push(*dst, sct) <= 0) | |
4362 | goto err; | |
4363 | scts_moved += 1; | |
4364 | } | |
4365 | ||
4366 | return scts_moved; | |
4367 | err: | |
4368 | if (sct != NULL) | |
4369 | sk_SCT_push(src, sct); /* Put the SCT back */ | |
4370 | return -1; | |
4371 | } | |
4372 | ||
4373 | /* | |
4374 | * Look for data collected during ServerHello and parse if found. | |
4375 | * Returns the number of SCTs extracted. | |
4376 | */ | |
4377 | static int ct_extract_tls_extension_scts(SSL *s) | |
4378 | { | |
4379 | int scts_extracted = 0; | |
4380 | ||
4381 | if (s->ext.scts != NULL) { | |
4382 | const unsigned char *p = s->ext.scts; | |
4383 | STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len); | |
4384 | ||
4385 | scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION); | |
4386 | ||
4387 | SCT_LIST_free(scts); | |
4388 | } | |
4389 | ||
4390 | return scts_extracted; | |
4391 | } | |
4392 | ||
4393 | /* | |
4394 | * Checks for an OCSP response and then attempts to extract any SCTs found if it | |
4395 | * contains an SCT X509 extension. They will be stored in |s->scts|. | |
4396 | * Returns: | |
4397 | * - The number of SCTs extracted, assuming an OCSP response exists. | |
4398 | * - 0 if no OCSP response exists or it contains no SCTs. | |
4399 | * - A negative integer if an error occurs. | |
4400 | */ | |
4401 | static int ct_extract_ocsp_response_scts(SSL *s) | |
4402 | { | |
4403 | # ifndef OPENSSL_NO_OCSP | |
4404 | int scts_extracted = 0; | |
4405 | const unsigned char *p; | |
4406 | OCSP_BASICRESP *br = NULL; | |
4407 | OCSP_RESPONSE *rsp = NULL; | |
4408 | STACK_OF(SCT) *scts = NULL; | |
4409 | int i; | |
4410 | ||
4411 | if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0) | |
4412 | goto err; | |
4413 | ||
4414 | p = s->ext.ocsp.resp; | |
4415 | rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len); | |
4416 | if (rsp == NULL) | |
4417 | goto err; | |
4418 | ||
4419 | br = OCSP_response_get1_basic(rsp); | |
4420 | if (br == NULL) | |
4421 | goto err; | |
4422 | ||
4423 | for (i = 0; i < OCSP_resp_count(br); ++i) { | |
4424 | OCSP_SINGLERESP *single = OCSP_resp_get0(br, i); | |
4425 | ||
4426 | if (single == NULL) | |
4427 | continue; | |
4428 | ||
4429 | scts = | |
4430 | OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL); | |
4431 | scts_extracted = | |
4432 | ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE); | |
4433 | if (scts_extracted < 0) | |
4434 | goto err; | |
4435 | } | |
4436 | err: | |
4437 | SCT_LIST_free(scts); | |
4438 | OCSP_BASICRESP_free(br); | |
4439 | OCSP_RESPONSE_free(rsp); | |
4440 | return scts_extracted; | |
4441 | # else | |
4442 | /* Behave as if no OCSP response exists */ | |
4443 | return 0; | |
4444 | # endif | |
4445 | } | |
4446 | ||
4447 | /* | |
4448 | * Attempts to extract SCTs from the peer certificate. | |
4449 | * Return the number of SCTs extracted, or a negative integer if an error | |
4450 | * occurs. | |
4451 | */ | |
4452 | static int ct_extract_x509v3_extension_scts(SSL *s) | |
4453 | { | |
4454 | int scts_extracted = 0; | |
4455 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4456 | ||
4457 | if (cert != NULL) { | |
4458 | STACK_OF(SCT) *scts = | |
4459 | X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL); | |
4460 | ||
4461 | scts_extracted = | |
4462 | ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION); | |
4463 | ||
4464 | SCT_LIST_free(scts); | |
4465 | } | |
4466 | ||
4467 | return scts_extracted; | |
4468 | } | |
4469 | ||
4470 | /* | |
4471 | * Attempts to find all received SCTs by checking TLS extensions, the OCSP | |
4472 | * response (if it exists) and X509v3 extensions in the certificate. | |
4473 | * Returns NULL if an error occurs. | |
4474 | */ | |
4475 | const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s) | |
4476 | { | |
4477 | if (!s->scts_parsed) { | |
4478 | if (ct_extract_tls_extension_scts(s) < 0 || | |
4479 | ct_extract_ocsp_response_scts(s) < 0 || | |
4480 | ct_extract_x509v3_extension_scts(s) < 0) | |
4481 | goto err; | |
4482 | ||
4483 | s->scts_parsed = 1; | |
4484 | } | |
4485 | return s->scts; | |
4486 | err: | |
4487 | return NULL; | |
4488 | } | |
4489 | ||
4490 | static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx, | |
4491 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4492 | { | |
4493 | return 1; | |
4494 | } | |
4495 | ||
4496 | static int ct_strict(const CT_POLICY_EVAL_CTX * ctx, | |
4497 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4498 | { | |
4499 | int count = scts != NULL ? sk_SCT_num(scts) : 0; | |
4500 | int i; | |
4501 | ||
4502 | for (i = 0; i < count; ++i) { | |
4503 | SCT *sct = sk_SCT_value(scts, i); | |
4504 | int status = SCT_get_validation_status(sct); | |
4505 | ||
4506 | if (status == SCT_VALIDATION_STATUS_VALID) | |
4507 | return 1; | |
4508 | } | |
4509 | SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS); | |
4510 | return 0; | |
4511 | } | |
4512 | ||
4513 | int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback, | |
4514 | void *arg) | |
4515 | { | |
4516 | /* | |
4517 | * Since code exists that uses the custom extension handler for CT, look | |
4518 | * for this and throw an error if they have already registered to use CT. | |
4519 | */ | |
4520 | if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx, | |
4521 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4522 | { | |
4523 | SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK, | |
4524 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4525 | return 0; | |
4526 | } | |
4527 | ||
4528 | if (callback != NULL) { | |
4529 | /* | |
4530 | * If we are validating CT, then we MUST accept SCTs served via OCSP | |
4531 | */ | |
4532 | if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp)) | |
4533 | return 0; | |
4534 | } | |
4535 | ||
4536 | s->ct_validation_callback = callback; | |
4537 | s->ct_validation_callback_arg = arg; | |
4538 | ||
4539 | return 1; | |
4540 | } | |
4541 | ||
4542 | int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, | |
4543 | ssl_ct_validation_cb callback, void *arg) | |
4544 | { | |
4545 | /* | |
4546 | * Since code exists that uses the custom extension handler for CT, look for | |
4547 | * this and throw an error if they have already registered to use CT. | |
4548 | */ | |
4549 | if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx, | |
4550 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4551 | { | |
4552 | SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK, | |
4553 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4554 | return 0; | |
4555 | } | |
4556 | ||
4557 | ctx->ct_validation_callback = callback; | |
4558 | ctx->ct_validation_callback_arg = arg; | |
4559 | return 1; | |
4560 | } | |
4561 | ||
4562 | int SSL_ct_is_enabled(const SSL *s) | |
4563 | { | |
4564 | return s->ct_validation_callback != NULL; | |
4565 | } | |
4566 | ||
4567 | int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx) | |
4568 | { | |
4569 | return ctx->ct_validation_callback != NULL; | |
4570 | } | |
4571 | ||
4572 | int ssl_validate_ct(SSL *s) | |
4573 | { | |
4574 | int ret = 0; | |
4575 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4576 | X509 *issuer; | |
4577 | SSL_DANE *dane = &s->dane; | |
4578 | CT_POLICY_EVAL_CTX *ctx = NULL; | |
4579 | const STACK_OF(SCT) *scts; | |
4580 | ||
4581 | /* | |
4582 | * If no callback is set, the peer is anonymous, or its chain is invalid, | |
4583 | * skip SCT validation - just return success. Applications that continue | |
4584 | * handshakes without certificates, with unverified chains, or pinned leaf | |
4585 | * certificates are outside the scope of the WebPKI and CT. | |
4586 | * | |
4587 | * The above exclusions notwithstanding the vast majority of peers will | |
4588 | * have rather ordinary certificate chains validated by typical | |
4589 | * applications that perform certificate verification and therefore will | |
4590 | * process SCTs when enabled. | |
4591 | */ | |
4592 | if (s->ct_validation_callback == NULL || cert == NULL || | |
4593 | s->verify_result != X509_V_OK || | |
4594 | s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1) | |
4595 | return 1; | |
4596 | ||
4597 | /* | |
4598 | * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3) | |
4599 | * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2 | |
4600 | */ | |
4601 | if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) { | |
4602 | switch (dane->mtlsa->usage) { | |
4603 | case DANETLS_USAGE_DANE_TA: | |
4604 | case DANETLS_USAGE_DANE_EE: | |
4605 | return 1; | |
4606 | } | |
4607 | } | |
4608 | ||
4609 | ctx = CT_POLICY_EVAL_CTX_new(); | |
4610 | if (ctx == NULL) { | |
4611 | SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE); | |
4612 | goto end; | |
4613 | } | |
4614 | ||
4615 | issuer = sk_X509_value(s->verified_chain, 1); | |
4616 | CT_POLICY_EVAL_CTX_set1_cert(ctx, cert); | |
4617 | CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer); | |
4618 | CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store); | |
4619 | CT_POLICY_EVAL_CTX_set_time( | |
4620 | ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000); | |
4621 | ||
4622 | scts = SSL_get0_peer_scts(s); | |
4623 | ||
4624 | /* | |
4625 | * This function returns success (> 0) only when all the SCTs are valid, 0 | |
4626 | * when some are invalid, and < 0 on various internal errors (out of | |
4627 | * memory, etc.). Having some, or even all, invalid SCTs is not sufficient | |
4628 | * reason to abort the handshake, that decision is up to the callback. | |
4629 | * Therefore, we error out only in the unexpected case that the return | |
4630 | * value is negative. | |
4631 | * | |
4632 | * XXX: One might well argue that the return value of this function is an | |
4633 | * unfortunate design choice. Its job is only to determine the validation | |
4634 | * status of each of the provided SCTs. So long as it correctly separates | |
4635 | * the wheat from the chaff it should return success. Failure in this case | |
4636 | * ought to correspond to an inability to carry out its duties. | |
4637 | */ | |
4638 | if (SCT_LIST_validate(scts, ctx) < 0) { | |
4639 | SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED); | |
4640 | goto end; | |
4641 | } | |
4642 | ||
4643 | ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg); | |
4644 | if (ret < 0) | |
4645 | ret = 0; /* This function returns 0 on failure */ | |
4646 | ||
4647 | end: | |
4648 | CT_POLICY_EVAL_CTX_free(ctx); | |
4649 | /* | |
4650 | * With SSL_VERIFY_NONE the session may be cached and re-used despite a | |
4651 | * failure return code here. Also the application may wish the complete | |
4652 | * the handshake, and then disconnect cleanly at a higher layer, after | |
4653 | * checking the verification status of the completed connection. | |
4654 | * | |
4655 | * We therefore force a certificate verification failure which will be | |
4656 | * visible via SSL_get_verify_result() and cached as part of any resumed | |
4657 | * session. | |
4658 | * | |
4659 | * Note: the permissive callback is for information gathering only, always | |
4660 | * returns success, and does not affect verification status. Only the | |
4661 | * strict callback or a custom application-specified callback can trigger | |
4662 | * connection failure or record a verification error. | |
4663 | */ | |
4664 | if (ret <= 0) | |
4665 | s->verify_result = X509_V_ERR_NO_VALID_SCTS; | |
4666 | return ret; | |
4667 | } | |
4668 | ||
4669 | int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode) | |
4670 | { | |
4671 | switch (validation_mode) { | |
4672 | default: | |
4673 | SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4674 | return 0; | |
4675 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4676 | return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL); | |
4677 | case SSL_CT_VALIDATION_STRICT: | |
4678 | return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL); | |
4679 | } | |
4680 | } | |
4681 | ||
4682 | int SSL_enable_ct(SSL *s, int validation_mode) | |
4683 | { | |
4684 | switch (validation_mode) { | |
4685 | default: | |
4686 | SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4687 | return 0; | |
4688 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4689 | return SSL_set_ct_validation_callback(s, ct_permissive, NULL); | |
4690 | case SSL_CT_VALIDATION_STRICT: | |
4691 | return SSL_set_ct_validation_callback(s, ct_strict, NULL); | |
4692 | } | |
4693 | } | |
4694 | ||
4695 | int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx) | |
4696 | { | |
4697 | return CTLOG_STORE_load_default_file(ctx->ctlog_store); | |
4698 | } | |
4699 | ||
4700 | int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path) | |
4701 | { | |
4702 | return CTLOG_STORE_load_file(ctx->ctlog_store, path); | |
4703 | } | |
4704 | ||
4705 | void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs) | |
4706 | { | |
4707 | CTLOG_STORE_free(ctx->ctlog_store); | |
4708 | ctx->ctlog_store = logs; | |
4709 | } | |
4710 | ||
4711 | const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx) | |
4712 | { | |
4713 | return ctx->ctlog_store; | |
4714 | } | |
4715 | ||
4716 | #endif /* OPENSSL_NO_CT */ | |
4717 | ||
4718 | void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb, | |
4719 | void *arg) | |
4720 | { | |
4721 | c->client_hello_cb = cb; | |
4722 | c->client_hello_cb_arg = arg; | |
4723 | } | |
4724 | ||
4725 | int SSL_client_hello_isv2(SSL *s) | |
4726 | { | |
4727 | if (s->clienthello == NULL) | |
4728 | return 0; | |
4729 | return s->clienthello->isv2; | |
4730 | } | |
4731 | ||
4732 | unsigned int SSL_client_hello_get0_legacy_version(SSL *s) | |
4733 | { | |
4734 | if (s->clienthello == NULL) | |
4735 | return 0; | |
4736 | return s->clienthello->legacy_version; | |
4737 | } | |
4738 | ||
4739 | size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out) | |
4740 | { | |
4741 | if (s->clienthello == NULL) | |
4742 | return 0; | |
4743 | if (out != NULL) | |
4744 | *out = s->clienthello->random; | |
4745 | return SSL3_RANDOM_SIZE; | |
4746 | } | |
4747 | ||
4748 | size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out) | |
4749 | { | |
4750 | if (s->clienthello == NULL) | |
4751 | return 0; | |
4752 | if (out != NULL) | |
4753 | *out = s->clienthello->session_id; | |
4754 | return s->clienthello->session_id_len; | |
4755 | } | |
4756 | ||
4757 | size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out) | |
4758 | { | |
4759 | if (s->clienthello == NULL) | |
4760 | return 0; | |
4761 | if (out != NULL) | |
4762 | *out = PACKET_data(&s->clienthello->ciphersuites); | |
4763 | return PACKET_remaining(&s->clienthello->ciphersuites); | |
4764 | } | |
4765 | ||
4766 | size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out) | |
4767 | { | |
4768 | if (s->clienthello == NULL) | |
4769 | return 0; | |
4770 | if (out != NULL) | |
4771 | *out = s->clienthello->compressions; | |
4772 | return s->clienthello->compressions_len; | |
4773 | } | |
4774 | ||
4775 | int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen) | |
4776 | { | |
4777 | RAW_EXTENSION *ext; | |
4778 | int *present; | |
4779 | size_t num = 0, i; | |
4780 | ||
4781 | if (s->clienthello == NULL || out == NULL || outlen == NULL) | |
4782 | return 0; | |
4783 | for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) { | |
4784 | ext = s->clienthello->pre_proc_exts + i; | |
4785 | if (ext->present) | |
4786 | num++; | |
4787 | } | |
4788 | present = OPENSSL_malloc(sizeof(*present) * num); | |
4789 | if (present == NULL) | |
4790 | return 0; | |
4791 | for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) { | |
4792 | ext = s->clienthello->pre_proc_exts + i; | |
4793 | if (ext->present) { | |
4794 | if (ext->received_order >= num) | |
4795 | goto err; | |
4796 | present[ext->received_order] = ext->type; | |
4797 | } | |
4798 | } | |
4799 | *out = present; | |
4800 | *outlen = num; | |
4801 | return 1; | |
4802 | err: | |
4803 | OPENSSL_free(present); | |
4804 | return 0; | |
4805 | } | |
4806 | ||
4807 | int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out, | |
4808 | size_t *outlen) | |
4809 | { | |
4810 | size_t i; | |
4811 | RAW_EXTENSION *r; | |
4812 | ||
4813 | if (s->clienthello == NULL) | |
4814 | return 0; | |
4815 | for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) { | |
4816 | r = s->clienthello->pre_proc_exts + i; | |
4817 | if (r->present && r->type == type) { | |
4818 | if (out != NULL) | |
4819 | *out = PACKET_data(&r->data); | |
4820 | if (outlen != NULL) | |
4821 | *outlen = PACKET_remaining(&r->data); | |
4822 | return 1; | |
4823 | } | |
4824 | } | |
4825 | return 0; | |
4826 | } | |
4827 | ||
4828 | int SSL_free_buffers(SSL *ssl) | |
4829 | { | |
4830 | RECORD_LAYER *rl = &ssl->rlayer; | |
4831 | ||
4832 | if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl)) | |
4833 | return 0; | |
4834 | ||
4835 | RECORD_LAYER_release(rl); | |
4836 | return 1; | |
4837 | } | |
4838 | ||
4839 | int SSL_alloc_buffers(SSL *ssl) | |
4840 | { | |
4841 | return ssl3_setup_buffers(ssl); | |
4842 | } | |
4843 | ||
4844 | void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) | |
4845 | { | |
4846 | ctx->keylog_callback = cb; | |
4847 | } | |
4848 | ||
4849 | SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) | |
4850 | { | |
4851 | return ctx->keylog_callback; | |
4852 | } | |
4853 | ||
4854 | static int nss_keylog_int(const char *prefix, | |
4855 | SSL *ssl, | |
4856 | const uint8_t *parameter_1, | |
4857 | size_t parameter_1_len, | |
4858 | const uint8_t *parameter_2, | |
4859 | size_t parameter_2_len) | |
4860 | { | |
4861 | char *out = NULL; | |
4862 | char *cursor = NULL; | |
4863 | size_t out_len = 0; | |
4864 | size_t i; | |
4865 | size_t prefix_len; | |
4866 | ||
4867 | if (ssl->ctx->keylog_callback == NULL) return 1; | |
4868 | ||
4869 | /* | |
4870 | * Our output buffer will contain the following strings, rendered with | |
4871 | * space characters in between, terminated by a NULL character: first the | |
4872 | * prefix, then the first parameter, then the second parameter. The | |
4873 | * meaning of each parameter depends on the specific key material being | |
4874 | * logged. Note that the first and second parameters are encoded in | |
4875 | * hexadecimal, so we need a buffer that is twice their lengths. | |
4876 | */ | |
4877 | prefix_len = strlen(prefix); | |
4878 | out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3; | |
4879 | if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) { | |
4880 | SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE); | |
4881 | return 0; | |
4882 | } | |
4883 | ||
4884 | strcpy(cursor, prefix); | |
4885 | cursor += prefix_len; | |
4886 | *cursor++ = ' '; | |
4887 | ||
4888 | for (i = 0; i < parameter_1_len; i++) { | |
4889 | sprintf(cursor, "%02x", parameter_1[i]); | |
4890 | cursor += 2; | |
4891 | } | |
4892 | *cursor++ = ' '; | |
4893 | ||
4894 | for (i = 0; i < parameter_2_len; i++) { | |
4895 | sprintf(cursor, "%02x", parameter_2[i]); | |
4896 | cursor += 2; | |
4897 | } | |
4898 | *cursor = '\0'; | |
4899 | ||
4900 | ssl->ctx->keylog_callback(ssl, (const char *)out); | |
4901 | OPENSSL_free(out); | |
4902 | return 1; | |
4903 | ||
4904 | } | |
4905 | ||
4906 | int ssl_log_rsa_client_key_exchange(SSL *ssl, | |
4907 | const uint8_t *encrypted_premaster, | |
4908 | size_t encrypted_premaster_len, | |
4909 | const uint8_t *premaster, | |
4910 | size_t premaster_len) | |
4911 | { | |
4912 | if (encrypted_premaster_len < 8) { | |
4913 | SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
4914 | return 0; | |
4915 | } | |
4916 | ||
4917 | /* We only want the first 8 bytes of the encrypted premaster as a tag. */ | |
4918 | return nss_keylog_int("RSA", | |
4919 | ssl, | |
4920 | encrypted_premaster, | |
4921 | 8, | |
4922 | premaster, | |
4923 | premaster_len); | |
4924 | } | |
4925 | ||
4926 | int ssl_log_secret(SSL *ssl, | |
4927 | const char *label, | |
4928 | const uint8_t *secret, | |
4929 | size_t secret_len) | |
4930 | { | |
4931 | return nss_keylog_int(label, | |
4932 | ssl, | |
4933 | ssl->s3->client_random, | |
4934 | SSL3_RANDOM_SIZE, | |
4935 | secret, | |
4936 | secret_len); | |
4937 | } | |
4938 | ||
4939 | #define SSLV2_CIPHER_LEN 3 | |
4940 | ||
4941 | int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format, | |
4942 | int *al) | |
4943 | { | |
4944 | int n; | |
4945 | ||
4946 | n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN; | |
4947 | ||
4948 | if (PACKET_remaining(cipher_suites) == 0) { | |
4949 | SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED); | |
4950 | *al = SSL_AD_ILLEGAL_PARAMETER; | |
4951 | return 0; | |
4952 | } | |
4953 | ||
4954 | if (PACKET_remaining(cipher_suites) % n != 0) { | |
4955 | SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, | |
4956 | SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); | |
4957 | *al = SSL_AD_DECODE_ERROR; | |
4958 | return 0; | |
4959 | } | |
4960 | ||
4961 | OPENSSL_free(s->s3->tmp.ciphers_raw); | |
4962 | s->s3->tmp.ciphers_raw = NULL; | |
4963 | s->s3->tmp.ciphers_rawlen = 0; | |
4964 | ||
4965 | if (sslv2format) { | |
4966 | size_t numciphers = PACKET_remaining(cipher_suites) / n; | |
4967 | PACKET sslv2ciphers = *cipher_suites; | |
4968 | unsigned int leadbyte; | |
4969 | unsigned char *raw; | |
4970 | ||
4971 | /* | |
4972 | * We store the raw ciphers list in SSLv3+ format so we need to do some | |
4973 | * preprocessing to convert the list first. If there are any SSLv2 only | |
4974 | * ciphersuites with a non-zero leading byte then we are going to | |
4975 | * slightly over allocate because we won't store those. But that isn't a | |
4976 | * problem. | |
4977 | */ | |
4978 | raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN); | |
4979 | s->s3->tmp.ciphers_raw = raw; | |
4980 | if (raw == NULL) { | |
4981 | *al = SSL_AD_INTERNAL_ERROR; | |
4982 | goto err; | |
4983 | } | |
4984 | for (s->s3->tmp.ciphers_rawlen = 0; | |
4985 | PACKET_remaining(&sslv2ciphers) > 0; | |
4986 | raw += TLS_CIPHER_LEN) { | |
4987 | if (!PACKET_get_1(&sslv2ciphers, &leadbyte) | |
4988 | || (leadbyte == 0 | |
4989 | && !PACKET_copy_bytes(&sslv2ciphers, raw, | |
4990 | TLS_CIPHER_LEN)) | |
4991 | || (leadbyte != 0 | |
4992 | && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) { | |
4993 | *al = SSL_AD_DECODE_ERROR; | |
4994 | OPENSSL_free(s->s3->tmp.ciphers_raw); | |
4995 | s->s3->tmp.ciphers_raw = NULL; | |
4996 | s->s3->tmp.ciphers_rawlen = 0; | |
4997 | goto err; | |
4998 | } | |
4999 | if (leadbyte == 0) | |
5000 | s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN; | |
5001 | } | |
5002 | } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw, | |
5003 | &s->s3->tmp.ciphers_rawlen)) { | |
5004 | *al = SSL_AD_INTERNAL_ERROR; | |
5005 | goto err; | |
5006 | } | |
5007 | return 1; | |
5008 | err: | |
5009 | return 0; | |
5010 | } | |
5011 | ||
5012 | int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len, | |
5013 | int isv2format, STACK_OF(SSL_CIPHER) **sk, | |
5014 | STACK_OF(SSL_CIPHER) **scsvs) | |
5015 | { | |
5016 | int alert; | |
5017 | PACKET pkt; | |
5018 | ||
5019 | if (!PACKET_buf_init(&pkt, bytes, len)) | |
5020 | return 0; | |
5021 | return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert); | |
5022 | } | |
5023 | ||
5024 | int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, | |
5025 | STACK_OF(SSL_CIPHER) **skp, | |
5026 | STACK_OF(SSL_CIPHER) **scsvs_out, | |
5027 | int sslv2format, int *al) | |
5028 | { | |
5029 | const SSL_CIPHER *c; | |
5030 | STACK_OF(SSL_CIPHER) *sk = NULL; | |
5031 | STACK_OF(SSL_CIPHER) *scsvs = NULL; | |
5032 | int n; | |
5033 | /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */ | |
5034 | unsigned char cipher[SSLV2_CIPHER_LEN]; | |
5035 | ||
5036 | n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN; | |
5037 | ||
5038 | if (PACKET_remaining(cipher_suites) == 0) { | |
5039 | SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED); | |
5040 | *al = SSL_AD_ILLEGAL_PARAMETER; | |
5041 | return 0; | |
5042 | } | |
5043 | ||
5044 | if (PACKET_remaining(cipher_suites) % n != 0) { | |
5045 | SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, | |
5046 | SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); | |
5047 | *al = SSL_AD_DECODE_ERROR; | |
5048 | return 0; | |
5049 | } | |
5050 | ||
5051 | sk = sk_SSL_CIPHER_new_null(); | |
5052 | scsvs = sk_SSL_CIPHER_new_null(); | |
5053 | if (sk == NULL || scsvs == NULL) { | |
5054 | SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
5055 | *al = SSL_AD_INTERNAL_ERROR; | |
5056 | goto err; | |
5057 | } | |
5058 | ||
5059 | while (PACKET_copy_bytes(cipher_suites, cipher, n)) { | |
5060 | /* | |
5061 | * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the | |
5062 | * first byte set to zero, while true SSLv2 ciphers have a non-zero | |
5063 | * first byte. We don't support any true SSLv2 ciphers, so skip them. | |
5064 | */ | |
5065 | if (sslv2format && cipher[0] != '\0') | |
5066 | continue; | |
5067 | ||
5068 | /* For SSLv2-compat, ignore leading 0-byte. */ | |
5069 | c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1); | |
5070 | if (c != NULL) { | |
5071 | if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) || | |
5072 | (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) { | |
5073 | SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
5074 | *al = SSL_AD_INTERNAL_ERROR; | |
5075 | goto err; | |
5076 | } | |
5077 | } | |
5078 | } | |
5079 | if (PACKET_remaining(cipher_suites) > 0) { | |
5080 | *al = SSL_AD_DECODE_ERROR; | |
5081 | SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH); | |
5082 | goto err; | |
5083 | } | |
5084 | ||
5085 | if (skp != NULL) | |
5086 | *skp = sk; | |
5087 | else | |
5088 | sk_SSL_CIPHER_free(sk); | |
5089 | if (scsvs_out != NULL) | |
5090 | *scsvs_out = scsvs; | |
5091 | else | |
5092 | sk_SSL_CIPHER_free(scsvs); | |
5093 | return 1; | |
5094 | err: | |
5095 | sk_SSL_CIPHER_free(sk); | |
5096 | sk_SSL_CIPHER_free(scsvs); | |
5097 | return 0; | |
5098 | } | |
5099 | ||
5100 | int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) | |
5101 | { | |
5102 | ctx->max_early_data = max_early_data; | |
5103 | ||
5104 | return 1; | |
5105 | } | |
5106 | ||
5107 | uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx) | |
5108 | { | |
5109 | return ctx->max_early_data; | |
5110 | } | |
5111 | ||
5112 | int SSL_set_max_early_data(SSL *s, uint32_t max_early_data) | |
5113 | { | |
5114 | s->max_early_data = max_early_data; | |
5115 | ||
5116 | return 1; | |
5117 | } | |
5118 | ||
5119 | uint32_t SSL_get_max_early_data(const SSL *s) | |
5120 | { | |
5121 | return s->max_early_data; | |
5122 | } | |
5123 | ||
5124 | int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size) | |
5125 | { | |
5126 | if (s->drbg != NULL) | |
5127 | return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0); | |
5128 | return RAND_bytes(rnd, (int)size); | |
5129 | } |