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1 | /* | |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the OpenSSL license (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | /* ==================================================================== | |
11 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
12 | * ECC cipher suite support in OpenSSL originally developed by | |
13 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
14 | */ | |
15 | /* ==================================================================== | |
16 | * Copyright 2005 Nokia. All rights reserved. | |
17 | * | |
18 | * The portions of the attached software ("Contribution") is developed by | |
19 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
20 | * license. | |
21 | * | |
22 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
23 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
24 | * support (see RFC 4279) to OpenSSL. | |
25 | * | |
26 | * No patent licenses or other rights except those expressly stated in | |
27 | * the OpenSSL open source license shall be deemed granted or received | |
28 | * expressly, by implication, estoppel, or otherwise. | |
29 | * | |
30 | * No assurances are provided by Nokia that the Contribution does not | |
31 | * infringe the patent or other intellectual property rights of any third | |
32 | * party or that the license provides you with all the necessary rights | |
33 | * to make use of the Contribution. | |
34 | * | |
35 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
36 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
37 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
38 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
39 | * OTHERWISE. | |
40 | */ | |
41 | ||
42 | #include <assert.h> | |
43 | #include <stdio.h> | |
44 | #include "ssl_locl.h" | |
45 | #include <openssl/objects.h> | |
46 | #include <openssl/lhash.h> | |
47 | #include <openssl/x509v3.h> | |
48 | #include <openssl/rand.h> | |
49 | #include <openssl/ocsp.h> | |
50 | #include <openssl/dh.h> | |
51 | #include <openssl/engine.h> | |
52 | #include <openssl/async.h> | |
53 | #include <openssl/ct.h> | |
54 | ||
55 | const char SSL_version_str[] = OPENSSL_VERSION_TEXT; | |
56 | ||
57 | SSL3_ENC_METHOD ssl3_undef_enc_method = { | |
58 | /* | |
59 | * evil casts, but these functions are only called if there's a library | |
60 | * bug | |
61 | */ | |
62 | (int (*)(SSL *, SSL3_RECORD *, unsigned int, int))ssl_undefined_function, | |
63 | (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function, | |
64 | ssl_undefined_function, | |
65 | (int (*)(SSL *, unsigned char *, unsigned char *, int)) | |
66 | ssl_undefined_function, | |
67 | (int (*)(SSL *, int))ssl_undefined_function, | |
68 | (int (*)(SSL *, const char *, int, unsigned char *)) | |
69 | ssl_undefined_function, | |
70 | 0, /* finish_mac_length */ | |
71 | NULL, /* client_finished_label */ | |
72 | 0, /* client_finished_label_len */ | |
73 | NULL, /* server_finished_label */ | |
74 | 0, /* server_finished_label_len */ | |
75 | (int (*)(int))ssl_undefined_function, | |
76 | (int (*)(SSL *, unsigned char *, size_t, const char *, | |
77 | size_t, const unsigned char *, size_t, | |
78 | int use_context))ssl_undefined_function, | |
79 | }; | |
80 | ||
81 | struct ssl_async_args { | |
82 | SSL *s; | |
83 | void *buf; | |
84 | int num; | |
85 | enum { READFUNC, WRITEFUNC, OTHERFUNC } type; | |
86 | union { | |
87 | int (*func_read) (SSL *, void *, int); | |
88 | int (*func_write) (SSL *, const void *, int); | |
89 | int (*func_other) (SSL *); | |
90 | } f; | |
91 | }; | |
92 | ||
93 | static const struct { | |
94 | uint8_t mtype; | |
95 | uint8_t ord; | |
96 | int nid; | |
97 | } dane_mds[] = { | |
98 | { | |
99 | DANETLS_MATCHING_FULL, 0, NID_undef | |
100 | }, | |
101 | { | |
102 | DANETLS_MATCHING_2256, 1, NID_sha256 | |
103 | }, | |
104 | { | |
105 | DANETLS_MATCHING_2512, 2, NID_sha512 | |
106 | }, | |
107 | }; | |
108 | ||
109 | static int dane_ctx_enable(struct dane_ctx_st *dctx) | |
110 | { | |
111 | const EVP_MD **mdevp; | |
112 | uint8_t *mdord; | |
113 | uint8_t mdmax = DANETLS_MATCHING_LAST; | |
114 | int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */ | |
115 | size_t i; | |
116 | ||
117 | if (dctx->mdevp != NULL) | |
118 | return 1; | |
119 | ||
120 | mdevp = OPENSSL_zalloc(n * sizeof(*mdevp)); | |
121 | mdord = OPENSSL_zalloc(n * sizeof(*mdord)); | |
122 | ||
123 | if (mdord == NULL || mdevp == NULL) { | |
124 | OPENSSL_free(mdord); | |
125 | OPENSSL_free(mdevp); | |
126 | SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | /* Install default entries */ | |
131 | for (i = 0; i < OSSL_NELEM(dane_mds); ++i) { | |
132 | const EVP_MD *md; | |
133 | ||
134 | if (dane_mds[i].nid == NID_undef || | |
135 | (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL) | |
136 | continue; | |
137 | mdevp[dane_mds[i].mtype] = md; | |
138 | mdord[dane_mds[i].mtype] = dane_mds[i].ord; | |
139 | } | |
140 | ||
141 | dctx->mdevp = mdevp; | |
142 | dctx->mdord = mdord; | |
143 | dctx->mdmax = mdmax; | |
144 | ||
145 | return 1; | |
146 | } | |
147 | ||
148 | static void dane_ctx_final(struct dane_ctx_st *dctx) | |
149 | { | |
150 | OPENSSL_free(dctx->mdevp); | |
151 | dctx->mdevp = NULL; | |
152 | ||
153 | OPENSSL_free(dctx->mdord); | |
154 | dctx->mdord = NULL; | |
155 | dctx->mdmax = 0; | |
156 | } | |
157 | ||
158 | static void tlsa_free(danetls_record *t) | |
159 | { | |
160 | if (t == NULL) | |
161 | return; | |
162 | OPENSSL_free(t->data); | |
163 | EVP_PKEY_free(t->spki); | |
164 | OPENSSL_free(t); | |
165 | } | |
166 | ||
167 | static void dane_final(SSL_DANE *dane) | |
168 | { | |
169 | sk_danetls_record_pop_free(dane->trecs, tlsa_free); | |
170 | dane->trecs = NULL; | |
171 | ||
172 | sk_X509_pop_free(dane->certs, X509_free); | |
173 | dane->certs = NULL; | |
174 | ||
175 | X509_free(dane->mcert); | |
176 | dane->mcert = NULL; | |
177 | dane->mtlsa = NULL; | |
178 | dane->mdpth = -1; | |
179 | dane->pdpth = -1; | |
180 | } | |
181 | ||
182 | /* | |
183 | * dane_copy - Copy dane configuration, sans verification state. | |
184 | */ | |
185 | static int ssl_dane_dup(SSL *to, SSL *from) | |
186 | { | |
187 | int num; | |
188 | int i; | |
189 | ||
190 | if (!DANETLS_ENABLED(&from->dane)) | |
191 | return 1; | |
192 | ||
193 | dane_final(&to->dane); | |
194 | to->dane.flags = from->dane.flags; | |
195 | to->dane.dctx = &to->ctx->dane; | |
196 | to->dane.trecs = sk_danetls_record_new_null(); | |
197 | ||
198 | if (to->dane.trecs == NULL) { | |
199 | SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | num = sk_danetls_record_num(from->dane.trecs); | |
204 | for (i = 0; i < num; ++i) { | |
205 | danetls_record *t = sk_danetls_record_value(from->dane.trecs, i); | |
206 | ||
207 | if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype, | |
208 | t->data, t->dlen) <= 0) | |
209 | return 0; | |
210 | } | |
211 | return 1; | |
212 | } | |
213 | ||
214 | static int dane_mtype_set(struct dane_ctx_st *dctx, | |
215 | const EVP_MD *md, uint8_t mtype, uint8_t ord) | |
216 | { | |
217 | int i; | |
218 | ||
219 | if (mtype == DANETLS_MATCHING_FULL && md != NULL) { | |
220 | SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL); | |
221 | return 0; | |
222 | } | |
223 | ||
224 | if (mtype > dctx->mdmax) { | |
225 | const EVP_MD **mdevp; | |
226 | uint8_t *mdord; | |
227 | int n = ((int)mtype) + 1; | |
228 | ||
229 | mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp)); | |
230 | if (mdevp == NULL) { | |
231 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
232 | return -1; | |
233 | } | |
234 | dctx->mdevp = mdevp; | |
235 | ||
236 | mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord)); | |
237 | if (mdord == NULL) { | |
238 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
239 | return -1; | |
240 | } | |
241 | dctx->mdord = mdord; | |
242 | ||
243 | /* Zero-fill any gaps */ | |
244 | for (i = dctx->mdmax + 1; i < mtype; ++i) { | |
245 | mdevp[i] = NULL; | |
246 | mdord[i] = 0; | |
247 | } | |
248 | ||
249 | dctx->mdmax = mtype; | |
250 | } | |
251 | ||
252 | dctx->mdevp[mtype] = md; | |
253 | /* Coerce ordinal of disabled matching types to 0 */ | |
254 | dctx->mdord[mtype] = (md == NULL) ? 0 : ord; | |
255 | ||
256 | return 1; | |
257 | } | |
258 | ||
259 | static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype) | |
260 | { | |
261 | if (mtype > dane->dctx->mdmax) | |
262 | return NULL; | |
263 | return dane->dctx->mdevp[mtype]; | |
264 | } | |
265 | ||
266 | static int dane_tlsa_add(SSL_DANE *dane, | |
267 | uint8_t usage, | |
268 | uint8_t selector, | |
269 | uint8_t mtype, unsigned char *data, size_t dlen) | |
270 | { | |
271 | danetls_record *t; | |
272 | const EVP_MD *md = NULL; | |
273 | int ilen = (int)dlen; | |
274 | int i; | |
275 | int num; | |
276 | ||
277 | if (dane->trecs == NULL) { | |
278 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED); | |
279 | return -1; | |
280 | } | |
281 | ||
282 | if (ilen < 0 || dlen != (size_t)ilen) { | |
283 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH); | |
284 | return 0; | |
285 | } | |
286 | ||
287 | if (usage > DANETLS_USAGE_LAST) { | |
288 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | if (selector > DANETLS_SELECTOR_LAST) { | |
293 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR); | |
294 | return 0; | |
295 | } | |
296 | ||
297 | if (mtype != DANETLS_MATCHING_FULL) { | |
298 | md = tlsa_md_get(dane, mtype); | |
299 | if (md == NULL) { | |
300 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE); | |
301 | return 0; | |
302 | } | |
303 | } | |
304 | ||
305 | if (md != NULL && dlen != (size_t)EVP_MD_size(md)) { | |
306 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH); | |
307 | return 0; | |
308 | } | |
309 | if (!data) { | |
310 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA); | |
311 | return 0; | |
312 | } | |
313 | ||
314 | if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) { | |
315 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
316 | return -1; | |
317 | } | |
318 | ||
319 | t->usage = usage; | |
320 | t->selector = selector; | |
321 | t->mtype = mtype; | |
322 | t->data = OPENSSL_malloc(ilen); | |
323 | if (t->data == NULL) { | |
324 | tlsa_free(t); | |
325 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
326 | return -1; | |
327 | } | |
328 | memcpy(t->data, data, ilen); | |
329 | t->dlen = ilen; | |
330 | ||
331 | /* Validate and cache full certificate or public key */ | |
332 | if (mtype == DANETLS_MATCHING_FULL) { | |
333 | const unsigned char *p = data; | |
334 | X509 *cert = NULL; | |
335 | EVP_PKEY *pkey = NULL; | |
336 | ||
337 | switch (selector) { | |
338 | case DANETLS_SELECTOR_CERT: | |
339 | if (!d2i_X509(&cert, &p, dlen) || p < data || | |
340 | dlen != (size_t)(p - data)) { | |
341 | tlsa_free(t); | |
342 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
343 | return 0; | |
344 | } | |
345 | if (X509_get0_pubkey(cert) == NULL) { | |
346 | tlsa_free(t); | |
347 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) { | |
352 | X509_free(cert); | |
353 | break; | |
354 | } | |
355 | ||
356 | /* | |
357 | * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA | |
358 | * records that contain full certificates of trust-anchors that are | |
359 | * not present in the wire chain. For usage PKIX-TA(0), we augment | |
360 | * the chain with untrusted Full(0) certificates from DNS, in case | |
361 | * they are missing from the chain. | |
362 | */ | |
363 | if ((dane->certs == NULL && | |
364 | (dane->certs = sk_X509_new_null()) == NULL) || | |
365 | !sk_X509_push(dane->certs, cert)) { | |
366 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
367 | X509_free(cert); | |
368 | tlsa_free(t); | |
369 | return -1; | |
370 | } | |
371 | break; | |
372 | ||
373 | case DANETLS_SELECTOR_SPKI: | |
374 | if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data || | |
375 | dlen != (size_t)(p - data)) { | |
376 | tlsa_free(t); | |
377 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY); | |
378 | return 0; | |
379 | } | |
380 | ||
381 | /* | |
382 | * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA | |
383 | * records that contain full bare keys of trust-anchors that are | |
384 | * not present in the wire chain. | |
385 | */ | |
386 | if (usage == DANETLS_USAGE_DANE_TA) | |
387 | t->spki = pkey; | |
388 | else | |
389 | EVP_PKEY_free(pkey); | |
390 | break; | |
391 | } | |
392 | } | |
393 | ||
394 | /*- | |
395 | * Find the right insertion point for the new record. | |
396 | * | |
397 | * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that | |
398 | * they can be processed first, as they require no chain building, and no | |
399 | * expiration or hostname checks. Because DANE-EE(3) is numerically | |
400 | * largest, this is accomplished via descending sort by "usage". | |
401 | * | |
402 | * We also sort in descending order by matching ordinal to simplify | |
403 | * the implementation of digest agility in the verification code. | |
404 | * | |
405 | * The choice of order for the selector is not significant, so we | |
406 | * use the same descending order for consistency. | |
407 | */ | |
408 | num = sk_danetls_record_num(dane->trecs); | |
409 | for (i = 0; i < num; ++i) { | |
410 | danetls_record *rec = sk_danetls_record_value(dane->trecs, i); | |
411 | ||
412 | if (rec->usage > usage) | |
413 | continue; | |
414 | if (rec->usage < usage) | |
415 | break; | |
416 | if (rec->selector > selector) | |
417 | continue; | |
418 | if (rec->selector < selector) | |
419 | break; | |
420 | if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype]) | |
421 | continue; | |
422 | break; | |
423 | } | |
424 | ||
425 | if (!sk_danetls_record_insert(dane->trecs, t, i)) { | |
426 | tlsa_free(t); | |
427 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
428 | return -1; | |
429 | } | |
430 | dane->umask |= DANETLS_USAGE_BIT(usage); | |
431 | ||
432 | return 1; | |
433 | } | |
434 | ||
435 | static void clear_ciphers(SSL *s) | |
436 | { | |
437 | /* clear the current cipher */ | |
438 | ssl_clear_cipher_ctx(s); | |
439 | ssl_clear_hash_ctx(&s->read_hash); | |
440 | ssl_clear_hash_ctx(&s->write_hash); | |
441 | } | |
442 | ||
443 | int SSL_clear(SSL *s) | |
444 | { | |
445 | if (s->method == NULL) { | |
446 | SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); | |
447 | return (0); | |
448 | } | |
449 | ||
450 | if (ssl_clear_bad_session(s)) { | |
451 | SSL_SESSION_free(s->session); | |
452 | s->session = NULL; | |
453 | } | |
454 | ||
455 | s->error = 0; | |
456 | s->hit = 0; | |
457 | s->shutdown = 0; | |
458 | ||
459 | if (s->renegotiate) { | |
460 | SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); | |
461 | return 0; | |
462 | } | |
463 | ||
464 | ossl_statem_clear(s); | |
465 | ||
466 | s->version = s->method->version; | |
467 | s->client_version = s->version; | |
468 | s->rwstate = SSL_NOTHING; | |
469 | ||
470 | BUF_MEM_free(s->init_buf); | |
471 | s->init_buf = NULL; | |
472 | clear_ciphers(s); | |
473 | s->first_packet = 0; | |
474 | ||
475 | /* Reset DANE verification result state */ | |
476 | s->dane.mdpth = -1; | |
477 | s->dane.pdpth = -1; | |
478 | X509_free(s->dane.mcert); | |
479 | s->dane.mcert = NULL; | |
480 | s->dane.mtlsa = NULL; | |
481 | ||
482 | /* Clear the verification result peername */ | |
483 | X509_VERIFY_PARAM_move_peername(s->param, NULL); | |
484 | ||
485 | /* | |
486 | * Check to see if we were changed into a different method, if so, revert | |
487 | * back if we are not doing session-id reuse. | |
488 | */ | |
489 | if (!ossl_statem_get_in_handshake(s) && (s->session == NULL) | |
490 | && (s->method != s->ctx->method)) { | |
491 | s->method->ssl_free(s); | |
492 | s->method = s->ctx->method; | |
493 | if (!s->method->ssl_new(s)) | |
494 | return (0); | |
495 | } else | |
496 | s->method->ssl_clear(s); | |
497 | ||
498 | RECORD_LAYER_clear(&s->rlayer); | |
499 | ||
500 | return (1); | |
501 | } | |
502 | ||
503 | /** Used to change an SSL_CTXs default SSL method type */ | |
504 | int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) | |
505 | { | |
506 | STACK_OF(SSL_CIPHER) *sk; | |
507 | ||
508 | ctx->method = meth; | |
509 | ||
510 | sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), | |
511 | &(ctx->cipher_list_by_id), | |
512 | SSL_DEFAULT_CIPHER_LIST, ctx->cert); | |
513 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { | |
514 | SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); | |
515 | return (0); | |
516 | } | |
517 | return (1); | |
518 | } | |
519 | ||
520 | SSL *SSL_new(SSL_CTX *ctx) | |
521 | { | |
522 | SSL *s; | |
523 | ||
524 | if (ctx == NULL) { | |
525 | SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); | |
526 | return (NULL); | |
527 | } | |
528 | if (ctx->method == NULL) { | |
529 | SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); | |
530 | return (NULL); | |
531 | } | |
532 | ||
533 | s = OPENSSL_zalloc(sizeof(*s)); | |
534 | if (s == NULL) | |
535 | goto err; | |
536 | ||
537 | s->lock = CRYPTO_THREAD_lock_new(); | |
538 | if (s->lock == NULL) { | |
539 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
540 | OPENSSL_free(s); | |
541 | return NULL; | |
542 | } | |
543 | ||
544 | RECORD_LAYER_init(&s->rlayer, s); | |
545 | ||
546 | s->options = ctx->options; | |
547 | s->dane.flags = ctx->dane.flags; | |
548 | s->min_proto_version = ctx->min_proto_version; | |
549 | s->max_proto_version = ctx->max_proto_version; | |
550 | s->mode = ctx->mode; | |
551 | s->max_cert_list = ctx->max_cert_list; | |
552 | s->references = 1; | |
553 | ||
554 | /* | |
555 | * Earlier library versions used to copy the pointer to the CERT, not | |
556 | * its contents; only when setting new parameters for the per-SSL | |
557 | * copy, ssl_cert_new would be called (and the direct reference to | |
558 | * the per-SSL_CTX settings would be lost, but those still were | |
559 | * indirectly accessed for various purposes, and for that reason they | |
560 | * used to be known as s->ctx->default_cert). Now we don't look at the | |
561 | * SSL_CTX's CERT after having duplicated it once. | |
562 | */ | |
563 | s->cert = ssl_cert_dup(ctx->cert); | |
564 | if (s->cert == NULL) | |
565 | goto err; | |
566 | ||
567 | RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead); | |
568 | s->msg_callback = ctx->msg_callback; | |
569 | s->msg_callback_arg = ctx->msg_callback_arg; | |
570 | s->verify_mode = ctx->verify_mode; | |
571 | s->not_resumable_session_cb = ctx->not_resumable_session_cb; | |
572 | s->sid_ctx_length = ctx->sid_ctx_length; | |
573 | OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); | |
574 | memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); | |
575 | s->verify_callback = ctx->default_verify_callback; | |
576 | s->generate_session_id = ctx->generate_session_id; | |
577 | ||
578 | s->param = X509_VERIFY_PARAM_new(); | |
579 | if (s->param == NULL) | |
580 | goto err; | |
581 | X509_VERIFY_PARAM_inherit(s->param, ctx->param); | |
582 | s->quiet_shutdown = ctx->quiet_shutdown; | |
583 | s->max_send_fragment = ctx->max_send_fragment; | |
584 | s->split_send_fragment = ctx->split_send_fragment; | |
585 | s->max_pipelines = ctx->max_pipelines; | |
586 | if (s->max_pipelines > 1) | |
587 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
588 | if (ctx->default_read_buf_len > 0) | |
589 | SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len); | |
590 | ||
591 | SSL_CTX_up_ref(ctx); | |
592 | s->ctx = ctx; | |
593 | s->tlsext_debug_cb = 0; | |
594 | s->tlsext_debug_arg = NULL; | |
595 | s->tlsext_ticket_expected = 0; | |
596 | s->tlsext_status_type = ctx->tlsext_status_type; | |
597 | s->tlsext_status_expected = 0; | |
598 | s->tlsext_ocsp_ids = NULL; | |
599 | s->tlsext_ocsp_exts = NULL; | |
600 | s->tlsext_ocsp_resp = NULL; | |
601 | s->tlsext_ocsp_resplen = -1; | |
602 | SSL_CTX_up_ref(ctx); | |
603 | s->initial_ctx = ctx; | |
604 | #ifndef OPENSSL_NO_EC | |
605 | if (ctx->tlsext_ecpointformatlist) { | |
606 | s->tlsext_ecpointformatlist = | |
607 | OPENSSL_memdup(ctx->tlsext_ecpointformatlist, | |
608 | ctx->tlsext_ecpointformatlist_length); | |
609 | if (!s->tlsext_ecpointformatlist) | |
610 | goto err; | |
611 | s->tlsext_ecpointformatlist_length = | |
612 | ctx->tlsext_ecpointformatlist_length; | |
613 | } | |
614 | if (ctx->tlsext_ellipticcurvelist) { | |
615 | s->tlsext_ellipticcurvelist = | |
616 | OPENSSL_memdup(ctx->tlsext_ellipticcurvelist, | |
617 | ctx->tlsext_ellipticcurvelist_length); | |
618 | if (!s->tlsext_ellipticcurvelist) | |
619 | goto err; | |
620 | s->tlsext_ellipticcurvelist_length = | |
621 | ctx->tlsext_ellipticcurvelist_length; | |
622 | } | |
623 | #endif | |
624 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
625 | s->next_proto_negotiated = NULL; | |
626 | #endif | |
627 | ||
628 | if (s->ctx->alpn_client_proto_list) { | |
629 | s->alpn_client_proto_list = | |
630 | OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); | |
631 | if (s->alpn_client_proto_list == NULL) | |
632 | goto err; | |
633 | memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, | |
634 | s->ctx->alpn_client_proto_list_len); | |
635 | s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; | |
636 | } | |
637 | ||
638 | s->verified_chain = NULL; | |
639 | s->verify_result = X509_V_OK; | |
640 | ||
641 | s->default_passwd_callback = ctx->default_passwd_callback; | |
642 | s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata; | |
643 | ||
644 | s->method = ctx->method; | |
645 | ||
646 | if (!s->method->ssl_new(s)) | |
647 | goto err; | |
648 | ||
649 | s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; | |
650 | ||
651 | if (!SSL_clear(s)) | |
652 | goto err; | |
653 | ||
654 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data)) | |
655 | goto err; | |
656 | ||
657 | #ifndef OPENSSL_NO_PSK | |
658 | s->psk_client_callback = ctx->psk_client_callback; | |
659 | s->psk_server_callback = ctx->psk_server_callback; | |
660 | #endif | |
661 | ||
662 | s->job = NULL; | |
663 | ||
664 | #ifndef OPENSSL_NO_CT | |
665 | if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback, | |
666 | ctx->ct_validation_callback_arg)) | |
667 | goto err; | |
668 | #endif | |
669 | ||
670 | return s; | |
671 | err: | |
672 | SSL_free(s); | |
673 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
674 | return NULL; | |
675 | } | |
676 | ||
677 | int SSL_is_dtls(const SSL *s) | |
678 | { | |
679 | return SSL_IS_DTLS(s) ? 1 : 0; | |
680 | } | |
681 | ||
682 | int SSL_up_ref(SSL *s) | |
683 | { | |
684 | int i; | |
685 | ||
686 | if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0) | |
687 | return 0; | |
688 | ||
689 | REF_PRINT_COUNT("SSL", s); | |
690 | REF_ASSERT_ISNT(i < 2); | |
691 | return ((i > 1) ? 1 : 0); | |
692 | } | |
693 | ||
694 | int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, | |
695 | unsigned int sid_ctx_len) | |
696 | { | |
697 | if (sid_ctx_len > sizeof ctx->sid_ctx) { | |
698 | SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, | |
699 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
700 | return 0; | |
701 | } | |
702 | ctx->sid_ctx_length = sid_ctx_len; | |
703 | memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); | |
704 | ||
705 | return 1; | |
706 | } | |
707 | ||
708 | int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, | |
709 | unsigned int sid_ctx_len) | |
710 | { | |
711 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
712 | SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, | |
713 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
714 | return 0; | |
715 | } | |
716 | ssl->sid_ctx_length = sid_ctx_len; | |
717 | memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); | |
718 | ||
719 | return 1; | |
720 | } | |
721 | ||
722 | int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) | |
723 | { | |
724 | CRYPTO_THREAD_write_lock(ctx->lock); | |
725 | ctx->generate_session_id = cb; | |
726 | CRYPTO_THREAD_unlock(ctx->lock); | |
727 | return 1; | |
728 | } | |
729 | ||
730 | int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) | |
731 | { | |
732 | CRYPTO_THREAD_write_lock(ssl->lock); | |
733 | ssl->generate_session_id = cb; | |
734 | CRYPTO_THREAD_unlock(ssl->lock); | |
735 | return 1; | |
736 | } | |
737 | ||
738 | int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, | |
739 | unsigned int id_len) | |
740 | { | |
741 | /* | |
742 | * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how | |
743 | * we can "construct" a session to give us the desired check - ie. to | |
744 | * find if there's a session in the hash table that would conflict with | |
745 | * any new session built out of this id/id_len and the ssl_version in use | |
746 | * by this SSL. | |
747 | */ | |
748 | SSL_SESSION r, *p; | |
749 | ||
750 | if (id_len > sizeof r.session_id) | |
751 | return 0; | |
752 | ||
753 | r.ssl_version = ssl->version; | |
754 | r.session_id_length = id_len; | |
755 | memcpy(r.session_id, id, id_len); | |
756 | ||
757 | CRYPTO_THREAD_read_lock(ssl->session_ctx->lock); | |
758 | p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r); | |
759 | CRYPTO_THREAD_unlock(ssl->session_ctx->lock); | |
760 | return (p != NULL); | |
761 | } | |
762 | ||
763 | int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) | |
764 | { | |
765 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
766 | } | |
767 | ||
768 | int SSL_set_purpose(SSL *s, int purpose) | |
769 | { | |
770 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
771 | } | |
772 | ||
773 | int SSL_CTX_set_trust(SSL_CTX *s, int trust) | |
774 | { | |
775 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
776 | } | |
777 | ||
778 | int SSL_set_trust(SSL *s, int trust) | |
779 | { | |
780 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
781 | } | |
782 | ||
783 | int SSL_set1_host(SSL *s, const char *hostname) | |
784 | { | |
785 | return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); | |
786 | } | |
787 | ||
788 | int SSL_add1_host(SSL *s, const char *hostname) | |
789 | { | |
790 | return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0); | |
791 | } | |
792 | ||
793 | void SSL_set_hostflags(SSL *s, unsigned int flags) | |
794 | { | |
795 | X509_VERIFY_PARAM_set_hostflags(s->param, flags); | |
796 | } | |
797 | ||
798 | const char *SSL_get0_peername(const SSL *s) | |
799 | { | |
800 | return X509_VERIFY_PARAM_get0_peername(s->param); | |
801 | } | |
802 | ||
803 | int SSL_CTX_dane_enable(SSL_CTX *ctx) | |
804 | { | |
805 | return dane_ctx_enable(&ctx->dane); | |
806 | } | |
807 | ||
808 | unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags) | |
809 | { | |
810 | unsigned long orig = ctx->dane.flags; | |
811 | ||
812 | ctx->dane.flags |= flags; | |
813 | return orig; | |
814 | } | |
815 | ||
816 | unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags) | |
817 | { | |
818 | unsigned long orig = ctx->dane.flags; | |
819 | ||
820 | ctx->dane.flags &= ~flags; | |
821 | return orig; | |
822 | } | |
823 | ||
824 | int SSL_dane_enable(SSL *s, const char *basedomain) | |
825 | { | |
826 | SSL_DANE *dane = &s->dane; | |
827 | ||
828 | if (s->ctx->dane.mdmax == 0) { | |
829 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED); | |
830 | return 0; | |
831 | } | |
832 | if (dane->trecs != NULL) { | |
833 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | /* | |
838 | * Default SNI name. This rejects empty names, while set1_host below | |
839 | * accepts them and disables host name checks. To avoid side-effects with | |
840 | * invalid input, set the SNI name first. | |
841 | */ | |
842 | if (s->tlsext_hostname == NULL) { | |
843 | if (!SSL_set_tlsext_host_name(s, basedomain)) { | |
844 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
845 | return -1; | |
846 | } | |
847 | } | |
848 | ||
849 | /* Primary RFC6125 reference identifier */ | |
850 | if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) { | |
851 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
852 | return -1; | |
853 | } | |
854 | ||
855 | dane->mdpth = -1; | |
856 | dane->pdpth = -1; | |
857 | dane->dctx = &s->ctx->dane; | |
858 | dane->trecs = sk_danetls_record_new_null(); | |
859 | ||
860 | if (dane->trecs == NULL) { | |
861 | SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE); | |
862 | return -1; | |
863 | } | |
864 | return 1; | |
865 | } | |
866 | ||
867 | unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags) | |
868 | { | |
869 | unsigned long orig = ssl->dane.flags; | |
870 | ||
871 | ssl->dane.flags |= flags; | |
872 | return orig; | |
873 | } | |
874 | ||
875 | unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags) | |
876 | { | |
877 | unsigned long orig = ssl->dane.flags; | |
878 | ||
879 | ssl->dane.flags &= ~flags; | |
880 | return orig; | |
881 | } | |
882 | ||
883 | int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki) | |
884 | { | |
885 | SSL_DANE *dane = &s->dane; | |
886 | ||
887 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
888 | return -1; | |
889 | if (dane->mtlsa) { | |
890 | if (mcert) | |
891 | *mcert = dane->mcert; | |
892 | if (mspki) | |
893 | *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL; | |
894 | } | |
895 | return dane->mdpth; | |
896 | } | |
897 | ||
898 | int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector, | |
899 | uint8_t *mtype, unsigned const char **data, size_t *dlen) | |
900 | { | |
901 | SSL_DANE *dane = &s->dane; | |
902 | ||
903 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
904 | return -1; | |
905 | if (dane->mtlsa) { | |
906 | if (usage) | |
907 | *usage = dane->mtlsa->usage; | |
908 | if (selector) | |
909 | *selector = dane->mtlsa->selector; | |
910 | if (mtype) | |
911 | *mtype = dane->mtlsa->mtype; | |
912 | if (data) | |
913 | *data = dane->mtlsa->data; | |
914 | if (dlen) | |
915 | *dlen = dane->mtlsa->dlen; | |
916 | } | |
917 | return dane->mdpth; | |
918 | } | |
919 | ||
920 | SSL_DANE *SSL_get0_dane(SSL *s) | |
921 | { | |
922 | return &s->dane; | |
923 | } | |
924 | ||
925 | int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector, | |
926 | uint8_t mtype, unsigned char *data, size_t dlen) | |
927 | { | |
928 | return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen); | |
929 | } | |
930 | ||
931 | int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, | |
932 | uint8_t ord) | |
933 | { | |
934 | return dane_mtype_set(&ctx->dane, md, mtype, ord); | |
935 | } | |
936 | ||
937 | int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) | |
938 | { | |
939 | return X509_VERIFY_PARAM_set1(ctx->param, vpm); | |
940 | } | |
941 | ||
942 | int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) | |
943 | { | |
944 | return X509_VERIFY_PARAM_set1(ssl->param, vpm); | |
945 | } | |
946 | ||
947 | X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) | |
948 | { | |
949 | return ctx->param; | |
950 | } | |
951 | ||
952 | X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) | |
953 | { | |
954 | return ssl->param; | |
955 | } | |
956 | ||
957 | void SSL_certs_clear(SSL *s) | |
958 | { | |
959 | ssl_cert_clear_certs(s->cert); | |
960 | } | |
961 | ||
962 | void SSL_free(SSL *s) | |
963 | { | |
964 | int i; | |
965 | ||
966 | if (s == NULL) | |
967 | return; | |
968 | ||
969 | CRYPTO_atomic_add(&s->references, -1, &i, s->lock); | |
970 | REF_PRINT_COUNT("SSL", s); | |
971 | if (i > 0) | |
972 | return; | |
973 | REF_ASSERT_ISNT(i < 0); | |
974 | ||
975 | X509_VERIFY_PARAM_free(s->param); | |
976 | dane_final(&s->dane); | |
977 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); | |
978 | ||
979 | ssl_free_wbio_buffer(s); | |
980 | ||
981 | BIO_free_all(s->wbio); | |
982 | BIO_free_all(s->rbio); | |
983 | ||
984 | BUF_MEM_free(s->init_buf); | |
985 | ||
986 | /* add extra stuff */ | |
987 | sk_SSL_CIPHER_free(s->cipher_list); | |
988 | sk_SSL_CIPHER_free(s->cipher_list_by_id); | |
989 | ||
990 | /* Make the next call work :-) */ | |
991 | if (s->session != NULL) { | |
992 | ssl_clear_bad_session(s); | |
993 | SSL_SESSION_free(s->session); | |
994 | } | |
995 | ||
996 | clear_ciphers(s); | |
997 | ||
998 | ssl_cert_free(s->cert); | |
999 | /* Free up if allocated */ | |
1000 | ||
1001 | OPENSSL_free(s->tlsext_hostname); | |
1002 | SSL_CTX_free(s->initial_ctx); | |
1003 | #ifndef OPENSSL_NO_EC | |
1004 | OPENSSL_free(s->tlsext_ecpointformatlist); | |
1005 | OPENSSL_free(s->tlsext_ellipticcurvelist); | |
1006 | #endif /* OPENSSL_NO_EC */ | |
1007 | sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); | |
1008 | #ifndef OPENSSL_NO_OCSP | |
1009 | sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); | |
1010 | #endif | |
1011 | #ifndef OPENSSL_NO_CT | |
1012 | SCT_LIST_free(s->scts); | |
1013 | OPENSSL_free(s->tlsext_scts); | |
1014 | #endif | |
1015 | OPENSSL_free(s->tlsext_ocsp_resp); | |
1016 | OPENSSL_free(s->alpn_client_proto_list); | |
1017 | ||
1018 | sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); | |
1019 | ||
1020 | sk_X509_pop_free(s->verified_chain, X509_free); | |
1021 | ||
1022 | if (s->method != NULL) | |
1023 | s->method->ssl_free(s); | |
1024 | ||
1025 | RECORD_LAYER_release(&s->rlayer); | |
1026 | ||
1027 | SSL_CTX_free(s->ctx); | |
1028 | ||
1029 | ASYNC_WAIT_CTX_free(s->waitctx); | |
1030 | ||
1031 | #if !defined(OPENSSL_NO_NEXTPROTONEG) | |
1032 | OPENSSL_free(s->next_proto_negotiated); | |
1033 | #endif | |
1034 | ||
1035 | #ifndef OPENSSL_NO_SRTP | |
1036 | sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); | |
1037 | #endif | |
1038 | ||
1039 | CRYPTO_THREAD_lock_free(s->lock); | |
1040 | ||
1041 | OPENSSL_free(s); | |
1042 | } | |
1043 | ||
1044 | void SSL_set0_rbio(SSL *s, BIO *rbio) | |
1045 | { | |
1046 | BIO_free_all(s->rbio); | |
1047 | s->rbio = rbio; | |
1048 | } | |
1049 | ||
1050 | void SSL_set0_wbio(SSL *s, BIO *wbio) | |
1051 | { | |
1052 | /* | |
1053 | * If the output buffering BIO is still in place, remove it | |
1054 | */ | |
1055 | if (s->bbio != NULL) | |
1056 | s->wbio = BIO_pop(s->wbio); | |
1057 | ||
1058 | BIO_free_all(s->wbio); | |
1059 | s->wbio = wbio; | |
1060 | ||
1061 | /* Re-attach |bbio| to the new |wbio|. */ | |
1062 | if (s->bbio != NULL) | |
1063 | s->wbio = BIO_push(s->bbio, s->wbio); | |
1064 | } | |
1065 | ||
1066 | void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) | |
1067 | { | |
1068 | /* | |
1069 | * For historical reasons, this function has many different cases in | |
1070 | * ownership handling. | |
1071 | */ | |
1072 | ||
1073 | /* If nothing has changed, do nothing */ | |
1074 | if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s)) | |
1075 | return; | |
1076 | ||
1077 | /* | |
1078 | * If the two arguments are equal then one fewer reference is granted by the | |
1079 | * caller than we want to take | |
1080 | */ | |
1081 | if (rbio != NULL && rbio == wbio) | |
1082 | BIO_up_ref(rbio); | |
1083 | ||
1084 | /* | |
1085 | * If only the wbio is changed only adopt one reference. | |
1086 | */ | |
1087 | if (rbio == SSL_get_rbio(s)) { | |
1088 | SSL_set0_wbio(s, wbio); | |
1089 | return; | |
1090 | } | |
1091 | /* | |
1092 | * There is an asymmetry here for historical reasons. If only the rbio is | |
1093 | * changed AND the rbio and wbio were originally different, then we only | |
1094 | * adopt one reference. | |
1095 | */ | |
1096 | if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) { | |
1097 | SSL_set0_rbio(s, rbio); | |
1098 | return; | |
1099 | } | |
1100 | ||
1101 | /* Otherwise, adopt both references. */ | |
1102 | SSL_set0_rbio(s, rbio); | |
1103 | SSL_set0_wbio(s, wbio); | |
1104 | } | |
1105 | ||
1106 | BIO *SSL_get_rbio(const SSL *s) | |
1107 | { | |
1108 | return s->rbio; | |
1109 | } | |
1110 | ||
1111 | BIO *SSL_get_wbio(const SSL *s) | |
1112 | { | |
1113 | if (s->bbio != NULL) { | |
1114 | /* | |
1115 | * If |bbio| is active, the true caller-configured BIO is its | |
1116 | * |next_bio|. | |
1117 | */ | |
1118 | return BIO_next(s->bbio); | |
1119 | } | |
1120 | return s->wbio; | |
1121 | } | |
1122 | ||
1123 | int SSL_get_fd(const SSL *s) | |
1124 | { | |
1125 | return SSL_get_rfd(s); | |
1126 | } | |
1127 | ||
1128 | int SSL_get_rfd(const SSL *s) | |
1129 | { | |
1130 | int ret = -1; | |
1131 | BIO *b, *r; | |
1132 | ||
1133 | b = SSL_get_rbio(s); | |
1134 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1135 | if (r != NULL) | |
1136 | BIO_get_fd(r, &ret); | |
1137 | return (ret); | |
1138 | } | |
1139 | ||
1140 | int SSL_get_wfd(const SSL *s) | |
1141 | { | |
1142 | int ret = -1; | |
1143 | BIO *b, *r; | |
1144 | ||
1145 | b = SSL_get_wbio(s); | |
1146 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1147 | if (r != NULL) | |
1148 | BIO_get_fd(r, &ret); | |
1149 | return (ret); | |
1150 | } | |
1151 | ||
1152 | #ifndef OPENSSL_NO_SOCK | |
1153 | int SSL_set_fd(SSL *s, int fd) | |
1154 | { | |
1155 | int ret = 0; | |
1156 | BIO *bio = NULL; | |
1157 | ||
1158 | bio = BIO_new(BIO_s_socket()); | |
1159 | ||
1160 | if (bio == NULL) { | |
1161 | SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); | |
1162 | goto err; | |
1163 | } | |
1164 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1165 | SSL_set_bio(s, bio, bio); | |
1166 | ret = 1; | |
1167 | err: | |
1168 | return (ret); | |
1169 | } | |
1170 | ||
1171 | int SSL_set_wfd(SSL *s, int fd) | |
1172 | { | |
1173 | BIO *rbio = SSL_get_rbio(s); | |
1174 | ||
1175 | if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET | |
1176 | || (int)BIO_get_fd(rbio, NULL) != fd) { | |
1177 | BIO *bio = BIO_new(BIO_s_socket()); | |
1178 | ||
1179 | if (bio == NULL) { | |
1180 | SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); | |
1181 | return 0; | |
1182 | } | |
1183 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1184 | SSL_set0_wbio(s, bio); | |
1185 | } else { | |
1186 | BIO_up_ref(rbio); | |
1187 | SSL_set0_wbio(s, rbio); | |
1188 | } | |
1189 | return 1; | |
1190 | } | |
1191 | ||
1192 | int SSL_set_rfd(SSL *s, int fd) | |
1193 | { | |
1194 | BIO *wbio = SSL_get_wbio(s); | |
1195 | ||
1196 | if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET | |
1197 | || ((int)BIO_get_fd(wbio, NULL) != fd)) { | |
1198 | BIO *bio = BIO_new(BIO_s_socket()); | |
1199 | ||
1200 | if (bio == NULL) { | |
1201 | SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); | |
1202 | return 0; | |
1203 | } | |
1204 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1205 | SSL_set0_rbio(s, bio); | |
1206 | } else { | |
1207 | BIO_up_ref(wbio); | |
1208 | SSL_set0_rbio(s, wbio); | |
1209 | } | |
1210 | ||
1211 | return 1; | |
1212 | } | |
1213 | #endif | |
1214 | ||
1215 | /* return length of latest Finished message we sent, copy to 'buf' */ | |
1216 | size_t SSL_get_finished(const SSL *s, void *buf, size_t count) | |
1217 | { | |
1218 | size_t ret = 0; | |
1219 | ||
1220 | if (s->s3 != NULL) { | |
1221 | ret = s->s3->tmp.finish_md_len; | |
1222 | if (count > ret) | |
1223 | count = ret; | |
1224 | memcpy(buf, s->s3->tmp.finish_md, count); | |
1225 | } | |
1226 | return ret; | |
1227 | } | |
1228 | ||
1229 | /* return length of latest Finished message we expected, copy to 'buf' */ | |
1230 | size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) | |
1231 | { | |
1232 | size_t ret = 0; | |
1233 | ||
1234 | if (s->s3 != NULL) { | |
1235 | ret = s->s3->tmp.peer_finish_md_len; | |
1236 | if (count > ret) | |
1237 | count = ret; | |
1238 | memcpy(buf, s->s3->tmp.peer_finish_md, count); | |
1239 | } | |
1240 | return ret; | |
1241 | } | |
1242 | ||
1243 | int SSL_get_verify_mode(const SSL *s) | |
1244 | { | |
1245 | return (s->verify_mode); | |
1246 | } | |
1247 | ||
1248 | int SSL_get_verify_depth(const SSL *s) | |
1249 | { | |
1250 | return X509_VERIFY_PARAM_get_depth(s->param); | |
1251 | } | |
1252 | ||
1253 | int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { | |
1254 | return (s->verify_callback); | |
1255 | } | |
1256 | ||
1257 | int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) | |
1258 | { | |
1259 | return (ctx->verify_mode); | |
1260 | } | |
1261 | ||
1262 | int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) | |
1263 | { | |
1264 | return X509_VERIFY_PARAM_get_depth(ctx->param); | |
1265 | } | |
1266 | ||
1267 | int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { | |
1268 | return (ctx->default_verify_callback); | |
1269 | } | |
1270 | ||
1271 | void SSL_set_verify(SSL *s, int mode, | |
1272 | int (*callback) (int ok, X509_STORE_CTX *ctx)) | |
1273 | { | |
1274 | s->verify_mode = mode; | |
1275 | if (callback != NULL) | |
1276 | s->verify_callback = callback; | |
1277 | } | |
1278 | ||
1279 | void SSL_set_verify_depth(SSL *s, int depth) | |
1280 | { | |
1281 | X509_VERIFY_PARAM_set_depth(s->param, depth); | |
1282 | } | |
1283 | ||
1284 | void SSL_set_read_ahead(SSL *s, int yes) | |
1285 | { | |
1286 | RECORD_LAYER_set_read_ahead(&s->rlayer, yes); | |
1287 | } | |
1288 | ||
1289 | int SSL_get_read_ahead(const SSL *s) | |
1290 | { | |
1291 | return RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1292 | } | |
1293 | ||
1294 | int SSL_pending(const SSL *s) | |
1295 | { | |
1296 | /* | |
1297 | * SSL_pending cannot work properly if read-ahead is enabled | |
1298 | * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is | |
1299 | * impossible to fix since SSL_pending cannot report errors that may be | |
1300 | * observed while scanning the new data. (Note that SSL_pending() is | |
1301 | * often used as a boolean value, so we'd better not return -1.) | |
1302 | */ | |
1303 | return (s->method->ssl_pending(s)); | |
1304 | } | |
1305 | ||
1306 | int SSL_has_pending(const SSL *s) | |
1307 | { | |
1308 | /* | |
1309 | * Similar to SSL_pending() but returns a 1 to indicate that we have | |
1310 | * unprocessed data available or 0 otherwise (as opposed to the number of | |
1311 | * bytes available). Unlike SSL_pending() this will take into account | |
1312 | * read_ahead data. A 1 return simply indicates that we have unprocessed | |
1313 | * data. That data may not result in any application data, or we may fail | |
1314 | * to parse the records for some reason. | |
1315 | */ | |
1316 | if (SSL_pending(s)) | |
1317 | return 1; | |
1318 | ||
1319 | return RECORD_LAYER_read_pending(&s->rlayer); | |
1320 | } | |
1321 | ||
1322 | X509 *SSL_get_peer_certificate(const SSL *s) | |
1323 | { | |
1324 | X509 *r; | |
1325 | ||
1326 | if ((s == NULL) || (s->session == NULL)) | |
1327 | r = NULL; | |
1328 | else | |
1329 | r = s->session->peer; | |
1330 | ||
1331 | if (r == NULL) | |
1332 | return (r); | |
1333 | ||
1334 | X509_up_ref(r); | |
1335 | ||
1336 | return (r); | |
1337 | } | |
1338 | ||
1339 | STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) | |
1340 | { | |
1341 | STACK_OF(X509) *r; | |
1342 | ||
1343 | if ((s == NULL) || (s->session == NULL)) | |
1344 | r = NULL; | |
1345 | else | |
1346 | r = s->session->peer_chain; | |
1347 | ||
1348 | /* | |
1349 | * If we are a client, cert_chain includes the peer's own certificate; if | |
1350 | * we are a server, it does not. | |
1351 | */ | |
1352 | ||
1353 | return (r); | |
1354 | } | |
1355 | ||
1356 | /* | |
1357 | * Now in theory, since the calling process own 't' it should be safe to | |
1358 | * modify. We need to be able to read f without being hassled | |
1359 | */ | |
1360 | int SSL_copy_session_id(SSL *t, const SSL *f) | |
1361 | { | |
1362 | int i; | |
1363 | /* Do we need to to SSL locking? */ | |
1364 | if (!SSL_set_session(t, SSL_get_session(f))) { | |
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | /* | |
1369 | * what if we are setup for one protocol version but want to talk another | |
1370 | */ | |
1371 | if (t->method != f->method) { | |
1372 | t->method->ssl_free(t); | |
1373 | t->method = f->method; | |
1374 | if (t->method->ssl_new(t) == 0) | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock); | |
1379 | ssl_cert_free(t->cert); | |
1380 | t->cert = f->cert; | |
1381 | if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) { | |
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | return 1; | |
1386 | } | |
1387 | ||
1388 | /* Fix this so it checks all the valid key/cert options */ | |
1389 | int SSL_CTX_check_private_key(const SSL_CTX *ctx) | |
1390 | { | |
1391 | if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) { | |
1392 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1393 | return (0); | |
1394 | } | |
1395 | if (ctx->cert->key->privatekey == NULL) { | |
1396 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1397 | return (0); | |
1398 | } | |
1399 | return (X509_check_private_key | |
1400 | (ctx->cert->key->x509, ctx->cert->key->privatekey)); | |
1401 | } | |
1402 | ||
1403 | /* Fix this function so that it takes an optional type parameter */ | |
1404 | int SSL_check_private_key(const SSL *ssl) | |
1405 | { | |
1406 | if (ssl == NULL) { | |
1407 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
1408 | return (0); | |
1409 | } | |
1410 | if (ssl->cert->key->x509 == NULL) { | |
1411 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1412 | return (0); | |
1413 | } | |
1414 | if (ssl->cert->key->privatekey == NULL) { | |
1415 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1416 | return (0); | |
1417 | } | |
1418 | return (X509_check_private_key(ssl->cert->key->x509, | |
1419 | ssl->cert->key->privatekey)); | |
1420 | } | |
1421 | ||
1422 | int SSL_waiting_for_async(SSL *s) | |
1423 | { | |
1424 | if (s->job) | |
1425 | return 1; | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds) | |
1431 | { | |
1432 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1433 | ||
1434 | if (ctx == NULL) | |
1435 | return 0; | |
1436 | return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds); | |
1437 | } | |
1438 | ||
1439 | int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds, | |
1440 | OSSL_ASYNC_FD *delfd, size_t *numdelfds) | |
1441 | { | |
1442 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1443 | ||
1444 | if (ctx == NULL) | |
1445 | return 0; | |
1446 | return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd, | |
1447 | numdelfds); | |
1448 | } | |
1449 | ||
1450 | int SSL_accept(SSL *s) | |
1451 | { | |
1452 | if (s->handshake_func == NULL) { | |
1453 | /* Not properly initialized yet */ | |
1454 | SSL_set_accept_state(s); | |
1455 | } | |
1456 | ||
1457 | return SSL_do_handshake(s); | |
1458 | } | |
1459 | ||
1460 | int SSL_connect(SSL *s) | |
1461 | { | |
1462 | if (s->handshake_func == NULL) { | |
1463 | /* Not properly initialized yet */ | |
1464 | SSL_set_connect_state(s); | |
1465 | } | |
1466 | ||
1467 | return SSL_do_handshake(s); | |
1468 | } | |
1469 | ||
1470 | long SSL_get_default_timeout(const SSL *s) | |
1471 | { | |
1472 | return (s->method->get_timeout()); | |
1473 | } | |
1474 | ||
1475 | static int ssl_start_async_job(SSL *s, struct ssl_async_args *args, | |
1476 | int (*func) (void *)) | |
1477 | { | |
1478 | int ret; | |
1479 | if (s->waitctx == NULL) { | |
1480 | s->waitctx = ASYNC_WAIT_CTX_new(); | |
1481 | if (s->waitctx == NULL) | |
1482 | return -1; | |
1483 | } | |
1484 | switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args, | |
1485 | sizeof(struct ssl_async_args))) { | |
1486 | case ASYNC_ERR: | |
1487 | s->rwstate = SSL_NOTHING; | |
1488 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC); | |
1489 | return -1; | |
1490 | case ASYNC_PAUSE: | |
1491 | s->rwstate = SSL_ASYNC_PAUSED; | |
1492 | return -1; | |
1493 | case ASYNC_NO_JOBS: | |
1494 | s->rwstate = SSL_ASYNC_NO_JOBS; | |
1495 | return -1; | |
1496 | case ASYNC_FINISH: | |
1497 | s->job = NULL; | |
1498 | return ret; | |
1499 | default: | |
1500 | s->rwstate = SSL_NOTHING; | |
1501 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR); | |
1502 | /* Shouldn't happen */ | |
1503 | return -1; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | static int ssl_io_intern(void *vargs) | |
1508 | { | |
1509 | struct ssl_async_args *args; | |
1510 | SSL *s; | |
1511 | void *buf; | |
1512 | int num; | |
1513 | ||
1514 | args = (struct ssl_async_args *)vargs; | |
1515 | s = args->s; | |
1516 | buf = args->buf; | |
1517 | num = args->num; | |
1518 | switch (args->type) { | |
1519 | case READFUNC: | |
1520 | return args->f.func_read(s, buf, num); | |
1521 | case WRITEFUNC: | |
1522 | return args->f.func_write(s, buf, num); | |
1523 | case OTHERFUNC: | |
1524 | return args->f.func_other(s); | |
1525 | } | |
1526 | return -1; | |
1527 | } | |
1528 | ||
1529 | int SSL_read(SSL *s, void *buf, int num) | |
1530 | { | |
1531 | if (s->handshake_func == NULL) { | |
1532 | SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); | |
1533 | return -1; | |
1534 | } | |
1535 | ||
1536 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1537 | s->rwstate = SSL_NOTHING; | |
1538 | return (0); | |
1539 | } | |
1540 | ||
1541 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1542 | struct ssl_async_args args; | |
1543 | ||
1544 | args.s = s; | |
1545 | args.buf = buf; | |
1546 | args.num = num; | |
1547 | args.type = READFUNC; | |
1548 | args.f.func_read = s->method->ssl_read; | |
1549 | ||
1550 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1551 | } else { | |
1552 | return s->method->ssl_read(s, buf, num); | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | int SSL_peek(SSL *s, void *buf, int num) | |
1557 | { | |
1558 | if (s->handshake_func == NULL) { | |
1559 | SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); | |
1560 | return -1; | |
1561 | } | |
1562 | ||
1563 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1564 | return (0); | |
1565 | } | |
1566 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1567 | struct ssl_async_args args; | |
1568 | ||
1569 | args.s = s; | |
1570 | args.buf = buf; | |
1571 | args.num = num; | |
1572 | args.type = READFUNC; | |
1573 | args.f.func_read = s->method->ssl_peek; | |
1574 | ||
1575 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1576 | } else { | |
1577 | return s->method->ssl_peek(s, buf, num); | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | int SSL_write(SSL *s, const void *buf, int num) | |
1582 | { | |
1583 | if (s->handshake_func == NULL) { | |
1584 | SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); | |
1585 | return -1; | |
1586 | } | |
1587 | ||
1588 | if (s->shutdown & SSL_SENT_SHUTDOWN) { | |
1589 | s->rwstate = SSL_NOTHING; | |
1590 | SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); | |
1591 | return (-1); | |
1592 | } | |
1593 | ||
1594 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1595 | struct ssl_async_args args; | |
1596 | ||
1597 | args.s = s; | |
1598 | args.buf = (void *)buf; | |
1599 | args.num = num; | |
1600 | args.type = WRITEFUNC; | |
1601 | args.f.func_write = s->method->ssl_write; | |
1602 | ||
1603 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1604 | } else { | |
1605 | return s->method->ssl_write(s, buf, num); | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | int SSL_shutdown(SSL *s) | |
1610 | { | |
1611 | /* | |
1612 | * Note that this function behaves differently from what one might | |
1613 | * expect. Return values are 0 for no success (yet), 1 for success; but | |
1614 | * calling it once is usually not enough, even if blocking I/O is used | |
1615 | * (see ssl3_shutdown). | |
1616 | */ | |
1617 | ||
1618 | if (s->handshake_func == NULL) { | |
1619 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); | |
1620 | return -1; | |
1621 | } | |
1622 | ||
1623 | if (!SSL_in_init(s)) { | |
1624 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1625 | struct ssl_async_args args; | |
1626 | ||
1627 | args.s = s; | |
1628 | args.type = OTHERFUNC; | |
1629 | args.f.func_other = s->method->ssl_shutdown; | |
1630 | ||
1631 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1632 | } else { | |
1633 | return s->method->ssl_shutdown(s); | |
1634 | } | |
1635 | } else { | |
1636 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT); | |
1637 | return -1; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | int SSL_renegotiate(SSL *s) | |
1642 | { | |
1643 | if (s->renegotiate == 0) | |
1644 | s->renegotiate = 1; | |
1645 | ||
1646 | s->new_session = 1; | |
1647 | ||
1648 | return (s->method->ssl_renegotiate(s)); | |
1649 | } | |
1650 | ||
1651 | int SSL_renegotiate_abbreviated(SSL *s) | |
1652 | { | |
1653 | if (s->renegotiate == 0) | |
1654 | s->renegotiate = 1; | |
1655 | ||
1656 | s->new_session = 0; | |
1657 | ||
1658 | return (s->method->ssl_renegotiate(s)); | |
1659 | } | |
1660 | ||
1661 | int SSL_renegotiate_pending(SSL *s) | |
1662 | { | |
1663 | /* | |
1664 | * becomes true when negotiation is requested; false again once a | |
1665 | * handshake has finished | |
1666 | */ | |
1667 | return (s->renegotiate != 0); | |
1668 | } | |
1669 | ||
1670 | long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) | |
1671 | { | |
1672 | long l; | |
1673 | ||
1674 | switch (cmd) { | |
1675 | case SSL_CTRL_GET_READ_AHEAD: | |
1676 | return (RECORD_LAYER_get_read_ahead(&s->rlayer)); | |
1677 | case SSL_CTRL_SET_READ_AHEAD: | |
1678 | l = RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1679 | RECORD_LAYER_set_read_ahead(&s->rlayer, larg); | |
1680 | return (l); | |
1681 | ||
1682 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1683 | s->msg_callback_arg = parg; | |
1684 | return 1; | |
1685 | ||
1686 | case SSL_CTRL_MODE: | |
1687 | return (s->mode |= larg); | |
1688 | case SSL_CTRL_CLEAR_MODE: | |
1689 | return (s->mode &= ~larg); | |
1690 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1691 | return (s->max_cert_list); | |
1692 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1693 | l = s->max_cert_list; | |
1694 | s->max_cert_list = larg; | |
1695 | return (l); | |
1696 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1697 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1698 | return 0; | |
1699 | s->max_send_fragment = larg; | |
1700 | if (s->max_send_fragment < s->split_send_fragment) | |
1701 | s->split_send_fragment = s->max_send_fragment; | |
1702 | return 1; | |
1703 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
1704 | if ((unsigned int)larg > s->max_send_fragment || larg == 0) | |
1705 | return 0; | |
1706 | s->split_send_fragment = larg; | |
1707 | return 1; | |
1708 | case SSL_CTRL_SET_MAX_PIPELINES: | |
1709 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
1710 | return 0; | |
1711 | s->max_pipelines = larg; | |
1712 | if (larg > 1) | |
1713 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
1714 | return 1; | |
1715 | case SSL_CTRL_GET_RI_SUPPORT: | |
1716 | if (s->s3) | |
1717 | return s->s3->send_connection_binding; | |
1718 | else | |
1719 | return 0; | |
1720 | case SSL_CTRL_CERT_FLAGS: | |
1721 | return (s->cert->cert_flags |= larg); | |
1722 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1723 | return (s->cert->cert_flags &= ~larg); | |
1724 | ||
1725 | case SSL_CTRL_GET_RAW_CIPHERLIST: | |
1726 | if (parg) { | |
1727 | if (s->s3->tmp.ciphers_raw == NULL) | |
1728 | return 0; | |
1729 | *(unsigned char **)parg = s->s3->tmp.ciphers_raw; | |
1730 | return (int)s->s3->tmp.ciphers_rawlen; | |
1731 | } else { | |
1732 | return TLS_CIPHER_LEN; | |
1733 | } | |
1734 | case SSL_CTRL_GET_EXTMS_SUPPORT: | |
1735 | if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s)) | |
1736 | return -1; | |
1737 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) | |
1738 | return 1; | |
1739 | else | |
1740 | return 0; | |
1741 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
1742 | return ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
1743 | &s->min_proto_version); | |
1744 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
1745 | return ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
1746 | &s->max_proto_version); | |
1747 | default: | |
1748 | return (s->method->ssl_ctrl(s, cmd, larg, parg)); | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) | |
1753 | { | |
1754 | switch (cmd) { | |
1755 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1756 | s->msg_callback = (void (*) | |
1757 | (int write_p, int version, int content_type, | |
1758 | const void *buf, size_t len, SSL *ssl, | |
1759 | void *arg))(fp); | |
1760 | return 1; | |
1761 | ||
1762 | default: | |
1763 | return (s->method->ssl_callback_ctrl(s, cmd, fp)); | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) | |
1768 | { | |
1769 | return ctx->sessions; | |
1770 | } | |
1771 | ||
1772 | long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) | |
1773 | { | |
1774 | long l; | |
1775 | /* For some cases with ctx == NULL perform syntax checks */ | |
1776 | if (ctx == NULL) { | |
1777 | switch (cmd) { | |
1778 | #ifndef OPENSSL_NO_EC | |
1779 | case SSL_CTRL_SET_CURVES_LIST: | |
1780 | return tls1_set_curves_list(NULL, NULL, parg); | |
1781 | #endif | |
1782 | case SSL_CTRL_SET_SIGALGS_LIST: | |
1783 | case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: | |
1784 | return tls1_set_sigalgs_list(NULL, parg, 0); | |
1785 | default: | |
1786 | return 0; | |
1787 | } | |
1788 | } | |
1789 | ||
1790 | switch (cmd) { | |
1791 | case SSL_CTRL_GET_READ_AHEAD: | |
1792 | return (ctx->read_ahead); | |
1793 | case SSL_CTRL_SET_READ_AHEAD: | |
1794 | l = ctx->read_ahead; | |
1795 | ctx->read_ahead = larg; | |
1796 | return (l); | |
1797 | ||
1798 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1799 | ctx->msg_callback_arg = parg; | |
1800 | return 1; | |
1801 | ||
1802 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1803 | return (ctx->max_cert_list); | |
1804 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1805 | l = ctx->max_cert_list; | |
1806 | ctx->max_cert_list = larg; | |
1807 | return (l); | |
1808 | ||
1809 | case SSL_CTRL_SET_SESS_CACHE_SIZE: | |
1810 | l = ctx->session_cache_size; | |
1811 | ctx->session_cache_size = larg; | |
1812 | return (l); | |
1813 | case SSL_CTRL_GET_SESS_CACHE_SIZE: | |
1814 | return (ctx->session_cache_size); | |
1815 | case SSL_CTRL_SET_SESS_CACHE_MODE: | |
1816 | l = ctx->session_cache_mode; | |
1817 | ctx->session_cache_mode = larg; | |
1818 | return (l); | |
1819 | case SSL_CTRL_GET_SESS_CACHE_MODE: | |
1820 | return (ctx->session_cache_mode); | |
1821 | ||
1822 | case SSL_CTRL_SESS_NUMBER: | |
1823 | return (lh_SSL_SESSION_num_items(ctx->sessions)); | |
1824 | case SSL_CTRL_SESS_CONNECT: | |
1825 | return (ctx->stats.sess_connect); | |
1826 | case SSL_CTRL_SESS_CONNECT_GOOD: | |
1827 | return (ctx->stats.sess_connect_good); | |
1828 | case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: | |
1829 | return (ctx->stats.sess_connect_renegotiate); | |
1830 | case SSL_CTRL_SESS_ACCEPT: | |
1831 | return (ctx->stats.sess_accept); | |
1832 | case SSL_CTRL_SESS_ACCEPT_GOOD: | |
1833 | return (ctx->stats.sess_accept_good); | |
1834 | case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: | |
1835 | return (ctx->stats.sess_accept_renegotiate); | |
1836 | case SSL_CTRL_SESS_HIT: | |
1837 | return (ctx->stats.sess_hit); | |
1838 | case SSL_CTRL_SESS_CB_HIT: | |
1839 | return (ctx->stats.sess_cb_hit); | |
1840 | case SSL_CTRL_SESS_MISSES: | |
1841 | return (ctx->stats.sess_miss); | |
1842 | case SSL_CTRL_SESS_TIMEOUTS: | |
1843 | return (ctx->stats.sess_timeout); | |
1844 | case SSL_CTRL_SESS_CACHE_FULL: | |
1845 | return (ctx->stats.sess_cache_full); | |
1846 | case SSL_CTRL_MODE: | |
1847 | return (ctx->mode |= larg); | |
1848 | case SSL_CTRL_CLEAR_MODE: | |
1849 | return (ctx->mode &= ~larg); | |
1850 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1851 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1852 | return 0; | |
1853 | ctx->max_send_fragment = larg; | |
1854 | if (ctx->max_send_fragment < ctx->split_send_fragment) | |
1855 | ctx->split_send_fragment = ctx->max_send_fragment; | |
1856 | return 1; | |
1857 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
1858 | if ((unsigned int)larg > ctx->max_send_fragment || larg == 0) | |
1859 | return 0; | |
1860 | ctx->split_send_fragment = larg; | |
1861 | return 1; | |
1862 | case SSL_CTRL_SET_MAX_PIPELINES: | |
1863 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
1864 | return 0; | |
1865 | ctx->max_pipelines = larg; | |
1866 | return 1; | |
1867 | case SSL_CTRL_CERT_FLAGS: | |
1868 | return (ctx->cert->cert_flags |= larg); | |
1869 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1870 | return (ctx->cert->cert_flags &= ~larg); | |
1871 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
1872 | return ssl_set_version_bound(ctx->method->version, (int)larg, | |
1873 | &ctx->min_proto_version); | |
1874 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
1875 | return ssl_set_version_bound(ctx->method->version, (int)larg, | |
1876 | &ctx->max_proto_version); | |
1877 | default: | |
1878 | return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) | |
1883 | { | |
1884 | switch (cmd) { | |
1885 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1886 | ctx->msg_callback = (void (*) | |
1887 | (int write_p, int version, int content_type, | |
1888 | const void *buf, size_t len, SSL *ssl, | |
1889 | void *arg))(fp); | |
1890 | return 1; | |
1891 | ||
1892 | default: | |
1893 | return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) | |
1898 | { | |
1899 | if (a->id > b->id) | |
1900 | return 1; | |
1901 | if (a->id < b->id) | |
1902 | return -1; | |
1903 | return 0; | |
1904 | } | |
1905 | ||
1906 | int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, | |
1907 | const SSL_CIPHER *const *bp) | |
1908 | { | |
1909 | if ((*ap)->id > (*bp)->id) | |
1910 | return 1; | |
1911 | if ((*ap)->id < (*bp)->id) | |
1912 | return -1; | |
1913 | return 0; | |
1914 | } | |
1915 | ||
1916 | /** return a STACK of the ciphers available for the SSL and in order of | |
1917 | * preference */ | |
1918 | STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) | |
1919 | { | |
1920 | if (s != NULL) { | |
1921 | if (s->cipher_list != NULL) { | |
1922 | return (s->cipher_list); | |
1923 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { | |
1924 | return (s->ctx->cipher_list); | |
1925 | } | |
1926 | } | |
1927 | return (NULL); | |
1928 | } | |
1929 | ||
1930 | STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s) | |
1931 | { | |
1932 | if ((s == NULL) || (s->session == NULL) || !s->server) | |
1933 | return NULL; | |
1934 | return s->session->ciphers; | |
1935 | } | |
1936 | ||
1937 | STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s) | |
1938 | { | |
1939 | STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers; | |
1940 | int i; | |
1941 | ciphers = SSL_get_ciphers(s); | |
1942 | if (!ciphers) | |
1943 | return NULL; | |
1944 | ssl_set_client_disabled(s); | |
1945 | for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { | |
1946 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i); | |
1947 | if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) { | |
1948 | if (!sk) | |
1949 | sk = sk_SSL_CIPHER_new_null(); | |
1950 | if (!sk) | |
1951 | return NULL; | |
1952 | if (!sk_SSL_CIPHER_push(sk, c)) { | |
1953 | sk_SSL_CIPHER_free(sk); | |
1954 | return NULL; | |
1955 | } | |
1956 | } | |
1957 | } | |
1958 | return sk; | |
1959 | } | |
1960 | ||
1961 | /** return a STACK of the ciphers available for the SSL and in order of | |
1962 | * algorithm id */ | |
1963 | STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) | |
1964 | { | |
1965 | if (s != NULL) { | |
1966 | if (s->cipher_list_by_id != NULL) { | |
1967 | return (s->cipher_list_by_id); | |
1968 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { | |
1969 | return (s->ctx->cipher_list_by_id); | |
1970 | } | |
1971 | } | |
1972 | return (NULL); | |
1973 | } | |
1974 | ||
1975 | /** The old interface to get the same thing as SSL_get_ciphers() */ | |
1976 | const char *SSL_get_cipher_list(const SSL *s, int n) | |
1977 | { | |
1978 | const SSL_CIPHER *c; | |
1979 | STACK_OF(SSL_CIPHER) *sk; | |
1980 | ||
1981 | if (s == NULL) | |
1982 | return (NULL); | |
1983 | sk = SSL_get_ciphers(s); | |
1984 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) | |
1985 | return (NULL); | |
1986 | c = sk_SSL_CIPHER_value(sk, n); | |
1987 | if (c == NULL) | |
1988 | return (NULL); | |
1989 | return (c->name); | |
1990 | } | |
1991 | ||
1992 | /** return a STACK of the ciphers available for the SSL_CTX and in order of | |
1993 | * preference */ | |
1994 | STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx) | |
1995 | { | |
1996 | if (ctx != NULL) | |
1997 | return ctx->cipher_list; | |
1998 | return NULL; | |
1999 | } | |
2000 | ||
2001 | /** specify the ciphers to be used by default by the SSL_CTX */ | |
2002 | int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) | |
2003 | { | |
2004 | STACK_OF(SSL_CIPHER) *sk; | |
2005 | ||
2006 | sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, | |
2007 | &ctx->cipher_list_by_id, str, ctx->cert); | |
2008 | /* | |
2009 | * ssl_create_cipher_list may return an empty stack if it was unable to | |
2010 | * find a cipher matching the given rule string (for example if the rule | |
2011 | * string specifies a cipher which has been disabled). This is not an | |
2012 | * error as far as ssl_create_cipher_list is concerned, and hence | |
2013 | * ctx->cipher_list and ctx->cipher_list_by_id has been updated. | |
2014 | */ | |
2015 | if (sk == NULL) | |
2016 | return 0; | |
2017 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2018 | SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2019 | return 0; | |
2020 | } | |
2021 | return 1; | |
2022 | } | |
2023 | ||
2024 | /** specify the ciphers to be used by the SSL */ | |
2025 | int SSL_set_cipher_list(SSL *s, const char *str) | |
2026 | { | |
2027 | STACK_OF(SSL_CIPHER) *sk; | |
2028 | ||
2029 | sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, | |
2030 | &s->cipher_list_by_id, str, s->cert); | |
2031 | /* see comment in SSL_CTX_set_cipher_list */ | |
2032 | if (sk == NULL) | |
2033 | return 0; | |
2034 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2035 | SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2036 | return 0; | |
2037 | } | |
2038 | return 1; | |
2039 | } | |
2040 | ||
2041 | char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) | |
2042 | { | |
2043 | char *p; | |
2044 | STACK_OF(SSL_CIPHER) *sk; | |
2045 | const SSL_CIPHER *c; | |
2046 | int i; | |
2047 | ||
2048 | if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) | |
2049 | return (NULL); | |
2050 | ||
2051 | p = buf; | |
2052 | sk = s->session->ciphers; | |
2053 | ||
2054 | if (sk_SSL_CIPHER_num(sk) == 0) | |
2055 | return NULL; | |
2056 | ||
2057 | for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { | |
2058 | int n; | |
2059 | ||
2060 | c = sk_SSL_CIPHER_value(sk, i); | |
2061 | n = strlen(c->name); | |
2062 | if (n + 1 > len) { | |
2063 | if (p != buf) | |
2064 | --p; | |
2065 | *p = '\0'; | |
2066 | return buf; | |
2067 | } | |
2068 | memcpy(p, c->name, n + 1); | |
2069 | p += n; | |
2070 | *(p++) = ':'; | |
2071 | len -= n + 1; | |
2072 | } | |
2073 | p[-1] = '\0'; | |
2074 | return (buf); | |
2075 | } | |
2076 | ||
2077 | /** return a servername extension value if provided in Client Hello, or NULL. | |
2078 | * So far, only host_name types are defined (RFC 3546). | |
2079 | */ | |
2080 | ||
2081 | const char *SSL_get_servername(const SSL *s, const int type) | |
2082 | { | |
2083 | if (type != TLSEXT_NAMETYPE_host_name) | |
2084 | return NULL; | |
2085 | ||
2086 | return s->session && !s->tlsext_hostname ? | |
2087 | s->session->tlsext_hostname : s->tlsext_hostname; | |
2088 | } | |
2089 | ||
2090 | int SSL_get_servername_type(const SSL *s) | |
2091 | { | |
2092 | if (s->session | |
2093 | && (!s->tlsext_hostname ? s->session-> | |
2094 | tlsext_hostname : s->tlsext_hostname)) | |
2095 | return TLSEXT_NAMETYPE_host_name; | |
2096 | return -1; | |
2097 | } | |
2098 | ||
2099 | /* | |
2100 | * SSL_select_next_proto implements the standard protocol selection. It is | |
2101 | * expected that this function is called from the callback set by | |
2102 | * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a | |
2103 | * vector of 8-bit, length prefixed byte strings. The length byte itself is | |
2104 | * not included in the length. A byte string of length 0 is invalid. No byte | |
2105 | * string may be truncated. The current, but experimental algorithm for | |
2106 | * selecting the protocol is: 1) If the server doesn't support NPN then this | |
2107 | * is indicated to the callback. In this case, the client application has to | |
2108 | * abort the connection or have a default application level protocol. 2) If | |
2109 | * the server supports NPN, but advertises an empty list then the client | |
2110 | * selects the first protocol in its list, but indicates via the API that this | |
2111 | * fallback case was enacted. 3) Otherwise, the client finds the first | |
2112 | * protocol in the server's list that it supports and selects this protocol. | |
2113 | * This is because it's assumed that the server has better information about | |
2114 | * which protocol a client should use. 4) If the client doesn't support any | |
2115 | * of the server's advertised protocols, then this is treated the same as | |
2116 | * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was | |
2117 | * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. | |
2118 | */ | |
2119 | int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, | |
2120 | const unsigned char *server, | |
2121 | unsigned int server_len, | |
2122 | const unsigned char *client, unsigned int client_len) | |
2123 | { | |
2124 | unsigned int i, j; | |
2125 | const unsigned char *result; | |
2126 | int status = OPENSSL_NPN_UNSUPPORTED; | |
2127 | ||
2128 | /* | |
2129 | * For each protocol in server preference order, see if we support it. | |
2130 | */ | |
2131 | for (i = 0; i < server_len;) { | |
2132 | for (j = 0; j < client_len;) { | |
2133 | if (server[i] == client[j] && | |
2134 | memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { | |
2135 | /* We found a match */ | |
2136 | result = &server[i]; | |
2137 | status = OPENSSL_NPN_NEGOTIATED; | |
2138 | goto found; | |
2139 | } | |
2140 | j += client[j]; | |
2141 | j++; | |
2142 | } | |
2143 | i += server[i]; | |
2144 | i++; | |
2145 | } | |
2146 | ||
2147 | /* There's no overlap between our protocols and the server's list. */ | |
2148 | result = client; | |
2149 | status = OPENSSL_NPN_NO_OVERLAP; | |
2150 | ||
2151 | found: | |
2152 | *out = (unsigned char *)result + 1; | |
2153 | *outlen = result[0]; | |
2154 | return status; | |
2155 | } | |
2156 | ||
2157 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
2158 | /* | |
2159 | * SSL_get0_next_proto_negotiated sets *data and *len to point to the | |
2160 | * client's requested protocol for this connection and returns 0. If the | |
2161 | * client didn't request any protocol, then *data is set to NULL. Note that | |
2162 | * the client can request any protocol it chooses. The value returned from | |
2163 | * this function need not be a member of the list of supported protocols | |
2164 | * provided by the callback. | |
2165 | */ | |
2166 | void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, | |
2167 | unsigned *len) | |
2168 | { | |
2169 | *data = s->next_proto_negotiated; | |
2170 | if (!*data) { | |
2171 | *len = 0; | |
2172 | } else { | |
2173 | *len = s->next_proto_negotiated_len; | |
2174 | } | |
2175 | } | |
2176 | ||
2177 | /* | |
2178 | * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when | |
2179 | * a TLS server needs a list of supported protocols for Next Protocol | |
2180 | * Negotiation. The returned list must be in wire format. The list is | |
2181 | * returned by setting |out| to point to it and |outlen| to its length. This | |
2182 | * memory will not be modified, but one should assume that the SSL* keeps a | |
2183 | * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it | |
2184 | * wishes to advertise. Otherwise, no such extension will be included in the | |
2185 | * ServerHello. | |
2186 | */ | |
2187 | void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, | |
2188 | int (*cb) (SSL *ssl, | |
2189 | const unsigned char | |
2190 | **out, | |
2191 | unsigned int *outlen, | |
2192 | void *arg), void *arg) | |
2193 | { | |
2194 | ctx->next_protos_advertised_cb = cb; | |
2195 | ctx->next_protos_advertised_cb_arg = arg; | |
2196 | } | |
2197 | ||
2198 | /* | |
2199 | * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a | |
2200 | * client needs to select a protocol from the server's provided list. |out| | |
2201 | * must be set to point to the selected protocol (which may be within |in|). | |
2202 | * The length of the protocol name must be written into |outlen|. The | |
2203 | * server's advertised protocols are provided in |in| and |inlen|. The | |
2204 | * callback can assume that |in| is syntactically valid. The client must | |
2205 | * select a protocol. It is fatal to the connection if this callback returns | |
2206 | * a value other than SSL_TLSEXT_ERR_OK. | |
2207 | */ | |
2208 | void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, | |
2209 | int (*cb) (SSL *s, unsigned char **out, | |
2210 | unsigned char *outlen, | |
2211 | const unsigned char *in, | |
2212 | unsigned int inlen, | |
2213 | void *arg), void *arg) | |
2214 | { | |
2215 | ctx->next_proto_select_cb = cb; | |
2216 | ctx->next_proto_select_cb_arg = arg; | |
2217 | } | |
2218 | #endif | |
2219 | ||
2220 | /* | |
2221 | * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. | |
2222 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2223 | * length-prefixed strings). Returns 0 on success. | |
2224 | */ | |
2225 | int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, | |
2226 | unsigned int protos_len) | |
2227 | { | |
2228 | OPENSSL_free(ctx->alpn_client_proto_list); | |
2229 | ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len); | |
2230 | if (ctx->alpn_client_proto_list == NULL) { | |
2231 | SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2232 | return 1; | |
2233 | } | |
2234 | ctx->alpn_client_proto_list_len = protos_len; | |
2235 | ||
2236 | return 0; | |
2237 | } | |
2238 | ||
2239 | /* | |
2240 | * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. | |
2241 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2242 | * length-prefixed strings). Returns 0 on success. | |
2243 | */ | |
2244 | int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, | |
2245 | unsigned int protos_len) | |
2246 | { | |
2247 | OPENSSL_free(ssl->alpn_client_proto_list); | |
2248 | ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len); | |
2249 | if (ssl->alpn_client_proto_list == NULL) { | |
2250 | SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2251 | return 1; | |
2252 | } | |
2253 | ssl->alpn_client_proto_list_len = protos_len; | |
2254 | ||
2255 | return 0; | |
2256 | } | |
2257 | ||
2258 | /* | |
2259 | * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is | |
2260 | * called during ClientHello processing in order to select an ALPN protocol | |
2261 | * from the client's list of offered protocols. | |
2262 | */ | |
2263 | void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, | |
2264 | int (*cb) (SSL *ssl, | |
2265 | const unsigned char **out, | |
2266 | unsigned char *outlen, | |
2267 | const unsigned char *in, | |
2268 | unsigned int inlen, | |
2269 | void *arg), void *arg) | |
2270 | { | |
2271 | ctx->alpn_select_cb = cb; | |
2272 | ctx->alpn_select_cb_arg = arg; | |
2273 | } | |
2274 | ||
2275 | /* | |
2276 | * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from | |
2277 | * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name | |
2278 | * (not including the leading length-prefix byte). If the server didn't | |
2279 | * respond with a negotiated protocol then |*len| will be zero. | |
2280 | */ | |
2281 | void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, | |
2282 | unsigned int *len) | |
2283 | { | |
2284 | *data = NULL; | |
2285 | if (ssl->s3) | |
2286 | *data = ssl->s3->alpn_selected; | |
2287 | if (*data == NULL) | |
2288 | *len = 0; | |
2289 | else | |
2290 | *len = ssl->s3->alpn_selected_len; | |
2291 | } | |
2292 | ||
2293 | int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
2294 | const char *label, size_t llen, | |
2295 | const unsigned char *p, size_t plen, | |
2296 | int use_context) | |
2297 | { | |
2298 | if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) | |
2299 | return -1; | |
2300 | ||
2301 | return s->method->ssl3_enc->export_keying_material(s, out, olen, label, | |
2302 | llen, p, plen, | |
2303 | use_context); | |
2304 | } | |
2305 | ||
2306 | static unsigned long ssl_session_hash(const SSL_SESSION *a) | |
2307 | { | |
2308 | unsigned long l; | |
2309 | ||
2310 | l = (unsigned long) | |
2311 | ((unsigned int)a->session_id[0]) | | |
2312 | ((unsigned int)a->session_id[1] << 8L) | | |
2313 | ((unsigned long)a->session_id[2] << 16L) | | |
2314 | ((unsigned long)a->session_id[3] << 24L); | |
2315 | return (l); | |
2316 | } | |
2317 | ||
2318 | /* | |
2319 | * NB: If this function (or indeed the hash function which uses a sort of | |
2320 | * coarser function than this one) is changed, ensure | |
2321 | * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on | |
2322 | * being able to construct an SSL_SESSION that will collide with any existing | |
2323 | * session with a matching session ID. | |
2324 | */ | |
2325 | static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) | |
2326 | { | |
2327 | if (a->ssl_version != b->ssl_version) | |
2328 | return (1); | |
2329 | if (a->session_id_length != b->session_id_length) | |
2330 | return (1); | |
2331 | return (memcmp(a->session_id, b->session_id, a->session_id_length)); | |
2332 | } | |
2333 | ||
2334 | /* | |
2335 | * These wrapper functions should remain rather than redeclaring | |
2336 | * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each | |
2337 | * variable. The reason is that the functions aren't static, they're exposed | |
2338 | * via ssl.h. | |
2339 | */ | |
2340 | ||
2341 | SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) | |
2342 | { | |
2343 | SSL_CTX *ret = NULL; | |
2344 | ||
2345 | if (meth == NULL) { | |
2346 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); | |
2347 | return (NULL); | |
2348 | } | |
2349 | ||
2350 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) | |
2351 | return NULL; | |
2352 | ||
2353 | if (FIPS_mode() && (meth->version < TLS1_VERSION)) { | |
2354 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE); | |
2355 | return NULL; | |
2356 | } | |
2357 | ||
2358 | if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { | |
2359 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); | |
2360 | goto err; | |
2361 | } | |
2362 | ret = OPENSSL_zalloc(sizeof(*ret)); | |
2363 | if (ret == NULL) | |
2364 | goto err; | |
2365 | ||
2366 | ret->method = meth; | |
2367 | ret->min_proto_version = 0; | |
2368 | ret->max_proto_version = 0; | |
2369 | ret->session_cache_mode = SSL_SESS_CACHE_SERVER; | |
2370 | ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; | |
2371 | /* We take the system default. */ | |
2372 | ret->session_timeout = meth->get_timeout(); | |
2373 | ret->references = 1; | |
2374 | ret->lock = CRYPTO_THREAD_lock_new(); | |
2375 | if (ret->lock == NULL) { | |
2376 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2377 | OPENSSL_free(ret); | |
2378 | return NULL; | |
2379 | } | |
2380 | ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; | |
2381 | ret->verify_mode = SSL_VERIFY_NONE; | |
2382 | if ((ret->cert = ssl_cert_new()) == NULL) | |
2383 | goto err; | |
2384 | ||
2385 | ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp); | |
2386 | if (ret->sessions == NULL) | |
2387 | goto err; | |
2388 | ret->cert_store = X509_STORE_new(); | |
2389 | if (ret->cert_store == NULL) | |
2390 | goto err; | |
2391 | #ifndef OPENSSL_NO_CT | |
2392 | ret->ctlog_store = CTLOG_STORE_new(); | |
2393 | if (ret->ctlog_store == NULL) | |
2394 | goto err; | |
2395 | #endif | |
2396 | if (!ssl_create_cipher_list(ret->method, | |
2397 | &ret->cipher_list, &ret->cipher_list_by_id, | |
2398 | SSL_DEFAULT_CIPHER_LIST, ret->cert) | |
2399 | || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { | |
2400 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); | |
2401 | goto err2; | |
2402 | } | |
2403 | ||
2404 | ret->param = X509_VERIFY_PARAM_new(); | |
2405 | if (ret->param == NULL) | |
2406 | goto err; | |
2407 | ||
2408 | if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { | |
2409 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); | |
2410 | goto err2; | |
2411 | } | |
2412 | if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { | |
2413 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); | |
2414 | goto err2; | |
2415 | } | |
2416 | ||
2417 | if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) | |
2418 | goto err; | |
2419 | ||
2420 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) | |
2421 | goto err; | |
2422 | ||
2423 | /* No compression for DTLS */ | |
2424 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) | |
2425 | ret->comp_methods = SSL_COMP_get_compression_methods(); | |
2426 | ||
2427 | ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2428 | ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2429 | ||
2430 | /* Setup RFC5077 ticket keys */ | |
2431 | if ((RAND_bytes(ret->tlsext_tick_key_name, | |
2432 | sizeof(ret->tlsext_tick_key_name)) <= 0) | |
2433 | || (RAND_bytes(ret->tlsext_tick_hmac_key, | |
2434 | sizeof(ret->tlsext_tick_hmac_key)) <= 0) | |
2435 | || (RAND_bytes(ret->tlsext_tick_aes_key, | |
2436 | sizeof(ret->tlsext_tick_aes_key)) <= 0)) | |
2437 | ret->options |= SSL_OP_NO_TICKET; | |
2438 | ||
2439 | #ifndef OPENSSL_NO_SRP | |
2440 | if (!SSL_CTX_SRP_CTX_init(ret)) | |
2441 | goto err; | |
2442 | #endif | |
2443 | #ifndef OPENSSL_NO_ENGINE | |
2444 | # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO | |
2445 | # define eng_strx(x) #x | |
2446 | # define eng_str(x) eng_strx(x) | |
2447 | /* Use specific client engine automatically... ignore errors */ | |
2448 | { | |
2449 | ENGINE *eng; | |
2450 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2451 | if (!eng) { | |
2452 | ERR_clear_error(); | |
2453 | ENGINE_load_builtin_engines(); | |
2454 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2455 | } | |
2456 | if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) | |
2457 | ERR_clear_error(); | |
2458 | } | |
2459 | # endif | |
2460 | #endif | |
2461 | /* | |
2462 | * Default is to connect to non-RI servers. When RI is more widely | |
2463 | * deployed might change this. | |
2464 | */ | |
2465 | ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; | |
2466 | /* | |
2467 | * Disable compression by default to prevent CRIME. Applications can | |
2468 | * re-enable compression by configuring | |
2469 | * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION); | |
2470 | * or by using the SSL_CONF library. | |
2471 | */ | |
2472 | ret->options |= SSL_OP_NO_COMPRESSION; | |
2473 | ||
2474 | ret->tlsext_status_type = -1; | |
2475 | ||
2476 | return ret; | |
2477 | err: | |
2478 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2479 | err2: | |
2480 | SSL_CTX_free(ret); | |
2481 | return NULL; | |
2482 | } | |
2483 | ||
2484 | int SSL_CTX_up_ref(SSL_CTX *ctx) | |
2485 | { | |
2486 | int i; | |
2487 | ||
2488 | if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0) | |
2489 | return 0; | |
2490 | ||
2491 | REF_PRINT_COUNT("SSL_CTX", ctx); | |
2492 | REF_ASSERT_ISNT(i < 2); | |
2493 | return ((i > 1) ? 1 : 0); | |
2494 | } | |
2495 | ||
2496 | void SSL_CTX_free(SSL_CTX *a) | |
2497 | { | |
2498 | int i; | |
2499 | ||
2500 | if (a == NULL) | |
2501 | return; | |
2502 | ||
2503 | CRYPTO_atomic_add(&a->references, -1, &i, a->lock); | |
2504 | REF_PRINT_COUNT("SSL_CTX", a); | |
2505 | if (i > 0) | |
2506 | return; | |
2507 | REF_ASSERT_ISNT(i < 0); | |
2508 | ||
2509 | X509_VERIFY_PARAM_free(a->param); | |
2510 | dane_ctx_final(&a->dane); | |
2511 | ||
2512 | /* | |
2513 | * Free internal session cache. However: the remove_cb() may reference | |
2514 | * the ex_data of SSL_CTX, thus the ex_data store can only be removed | |
2515 | * after the sessions were flushed. | |
2516 | * As the ex_data handling routines might also touch the session cache, | |
2517 | * the most secure solution seems to be: empty (flush) the cache, then | |
2518 | * free ex_data, then finally free the cache. | |
2519 | * (See ticket [openssl.org #212].) | |
2520 | */ | |
2521 | if (a->sessions != NULL) | |
2522 | SSL_CTX_flush_sessions(a, 0); | |
2523 | ||
2524 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); | |
2525 | lh_SSL_SESSION_free(a->sessions); | |
2526 | X509_STORE_free(a->cert_store); | |
2527 | #ifndef OPENSSL_NO_CT | |
2528 | CTLOG_STORE_free(a->ctlog_store); | |
2529 | #endif | |
2530 | sk_SSL_CIPHER_free(a->cipher_list); | |
2531 | sk_SSL_CIPHER_free(a->cipher_list_by_id); | |
2532 | ssl_cert_free(a->cert); | |
2533 | sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); | |
2534 | sk_X509_pop_free(a->extra_certs, X509_free); | |
2535 | a->comp_methods = NULL; | |
2536 | #ifndef OPENSSL_NO_SRTP | |
2537 | sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); | |
2538 | #endif | |
2539 | #ifndef OPENSSL_NO_SRP | |
2540 | SSL_CTX_SRP_CTX_free(a); | |
2541 | #endif | |
2542 | #ifndef OPENSSL_NO_ENGINE | |
2543 | ENGINE_finish(a->client_cert_engine); | |
2544 | #endif | |
2545 | ||
2546 | #ifndef OPENSSL_NO_EC | |
2547 | OPENSSL_free(a->tlsext_ecpointformatlist); | |
2548 | OPENSSL_free(a->tlsext_ellipticcurvelist); | |
2549 | #endif | |
2550 | OPENSSL_free(a->alpn_client_proto_list); | |
2551 | ||
2552 | CRYPTO_THREAD_lock_free(a->lock); | |
2553 | ||
2554 | OPENSSL_free(a); | |
2555 | } | |
2556 | ||
2557 | void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) | |
2558 | { | |
2559 | ctx->default_passwd_callback = cb; | |
2560 | } | |
2561 | ||
2562 | void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) | |
2563 | { | |
2564 | ctx->default_passwd_callback_userdata = u; | |
2565 | } | |
2566 | ||
2567 | pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) | |
2568 | { | |
2569 | return ctx->default_passwd_callback; | |
2570 | } | |
2571 | ||
2572 | void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) | |
2573 | { | |
2574 | return ctx->default_passwd_callback_userdata; | |
2575 | } | |
2576 | ||
2577 | void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb) | |
2578 | { | |
2579 | s->default_passwd_callback = cb; | |
2580 | } | |
2581 | ||
2582 | void SSL_set_default_passwd_cb_userdata(SSL *s, void *u) | |
2583 | { | |
2584 | s->default_passwd_callback_userdata = u; | |
2585 | } | |
2586 | ||
2587 | pem_password_cb *SSL_get_default_passwd_cb(SSL *s) | |
2588 | { | |
2589 | return s->default_passwd_callback; | |
2590 | } | |
2591 | ||
2592 | void *SSL_get_default_passwd_cb_userdata(SSL *s) | |
2593 | { | |
2594 | return s->default_passwd_callback_userdata; | |
2595 | } | |
2596 | ||
2597 | void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, | |
2598 | int (*cb) (X509_STORE_CTX *, void *), | |
2599 | void *arg) | |
2600 | { | |
2601 | ctx->app_verify_callback = cb; | |
2602 | ctx->app_verify_arg = arg; | |
2603 | } | |
2604 | ||
2605 | void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, | |
2606 | int (*cb) (int, X509_STORE_CTX *)) | |
2607 | { | |
2608 | ctx->verify_mode = mode; | |
2609 | ctx->default_verify_callback = cb; | |
2610 | } | |
2611 | ||
2612 | void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) | |
2613 | { | |
2614 | X509_VERIFY_PARAM_set_depth(ctx->param, depth); | |
2615 | } | |
2616 | ||
2617 | void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg) | |
2618 | { | |
2619 | ssl_cert_set_cert_cb(c->cert, cb, arg); | |
2620 | } | |
2621 | ||
2622 | void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) | |
2623 | { | |
2624 | ssl_cert_set_cert_cb(s->cert, cb, arg); | |
2625 | } | |
2626 | ||
2627 | void ssl_set_masks(SSL *s) | |
2628 | { | |
2629 | #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST) | |
2630 | CERT_PKEY *cpk; | |
2631 | #endif | |
2632 | CERT *c = s->cert; | |
2633 | uint32_t *pvalid = s->s3->tmp.valid_flags; | |
2634 | int rsa_enc, rsa_sign, dh_tmp, dsa_sign; | |
2635 | unsigned long mask_k, mask_a; | |
2636 | #ifndef OPENSSL_NO_EC | |
2637 | int have_ecc_cert, ecdsa_ok; | |
2638 | X509 *x = NULL; | |
2639 | #endif | |
2640 | if (c == NULL) | |
2641 | return; | |
2642 | ||
2643 | #ifndef OPENSSL_NO_DH | |
2644 | dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto); | |
2645 | #else | |
2646 | dh_tmp = 0; | |
2647 | #endif | |
2648 | ||
2649 | rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID; | |
2650 | rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN; | |
2651 | dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN; | |
2652 | #ifndef OPENSSL_NO_EC | |
2653 | have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID; | |
2654 | #endif | |
2655 | mask_k = 0; | |
2656 | mask_a = 0; | |
2657 | ||
2658 | #ifdef CIPHER_DEBUG | |
2659 | fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n", | |
2660 | dh_tmp, rsa_enc, rsa_sign, dsa_sign); | |
2661 | #endif | |
2662 | ||
2663 | #ifndef OPENSSL_NO_GOST | |
2664 | cpk = &(c->pkeys[SSL_PKEY_GOST12_512]); | |
2665 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2666 | mask_k |= SSL_kGOST; | |
2667 | mask_a |= SSL_aGOST12; | |
2668 | } | |
2669 | cpk = &(c->pkeys[SSL_PKEY_GOST12_256]); | |
2670 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2671 | mask_k |= SSL_kGOST; | |
2672 | mask_a |= SSL_aGOST12; | |
2673 | } | |
2674 | cpk = &(c->pkeys[SSL_PKEY_GOST01]); | |
2675 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2676 | mask_k |= SSL_kGOST; | |
2677 | mask_a |= SSL_aGOST01; | |
2678 | } | |
2679 | #endif | |
2680 | ||
2681 | if (rsa_enc) | |
2682 | mask_k |= SSL_kRSA; | |
2683 | ||
2684 | if (dh_tmp) | |
2685 | mask_k |= SSL_kDHE; | |
2686 | ||
2687 | if (rsa_enc || rsa_sign) { | |
2688 | mask_a |= SSL_aRSA; | |
2689 | } | |
2690 | ||
2691 | if (dsa_sign) { | |
2692 | mask_a |= SSL_aDSS; | |
2693 | } | |
2694 | ||
2695 | mask_a |= SSL_aNULL; | |
2696 | ||
2697 | /* | |
2698 | * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites | |
2699 | * depending on the key usage extension. | |
2700 | */ | |
2701 | #ifndef OPENSSL_NO_EC | |
2702 | if (have_ecc_cert) { | |
2703 | uint32_t ex_kusage; | |
2704 | cpk = &c->pkeys[SSL_PKEY_ECC]; | |
2705 | x = cpk->x509; | |
2706 | ex_kusage = X509_get_key_usage(x); | |
2707 | ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE; | |
2708 | if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN)) | |
2709 | ecdsa_ok = 0; | |
2710 | if (ecdsa_ok) | |
2711 | mask_a |= SSL_aECDSA; | |
2712 | } | |
2713 | #endif | |
2714 | ||
2715 | #ifndef OPENSSL_NO_EC | |
2716 | mask_k |= SSL_kECDHE; | |
2717 | #endif | |
2718 | ||
2719 | #ifndef OPENSSL_NO_PSK | |
2720 | mask_k |= SSL_kPSK; | |
2721 | mask_a |= SSL_aPSK; | |
2722 | if (mask_k & SSL_kRSA) | |
2723 | mask_k |= SSL_kRSAPSK; | |
2724 | if (mask_k & SSL_kDHE) | |
2725 | mask_k |= SSL_kDHEPSK; | |
2726 | if (mask_k & SSL_kECDHE) | |
2727 | mask_k |= SSL_kECDHEPSK; | |
2728 | #endif | |
2729 | ||
2730 | s->s3->tmp.mask_k = mask_k; | |
2731 | s->s3->tmp.mask_a = mask_a; | |
2732 | } | |
2733 | ||
2734 | #ifndef OPENSSL_NO_EC | |
2735 | ||
2736 | int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) | |
2737 | { | |
2738 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) { | |
2739 | /* key usage, if present, must allow signing */ | |
2740 | if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { | |
2741 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2742 | SSL_R_ECC_CERT_NOT_FOR_SIGNING); | |
2743 | return 0; | |
2744 | } | |
2745 | } | |
2746 | return 1; /* all checks are ok */ | |
2747 | } | |
2748 | ||
2749 | #endif | |
2750 | ||
2751 | static int ssl_get_server_cert_index(const SSL *s) | |
2752 | { | |
2753 | int idx; | |
2754 | idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); | |
2755 | if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) | |
2756 | idx = SSL_PKEY_RSA_SIGN; | |
2757 | if (idx == SSL_PKEY_GOST_EC) { | |
2758 | if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509) | |
2759 | idx = SSL_PKEY_GOST12_512; | |
2760 | else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509) | |
2761 | idx = SSL_PKEY_GOST12_256; | |
2762 | else if (s->cert->pkeys[SSL_PKEY_GOST01].x509) | |
2763 | idx = SSL_PKEY_GOST01; | |
2764 | else | |
2765 | idx = -1; | |
2766 | } | |
2767 | if (idx == -1) | |
2768 | SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); | |
2769 | return idx; | |
2770 | } | |
2771 | ||
2772 | CERT_PKEY *ssl_get_server_send_pkey(SSL *s) | |
2773 | { | |
2774 | CERT *c; | |
2775 | int i; | |
2776 | ||
2777 | c = s->cert; | |
2778 | if (!s->s3 || !s->s3->tmp.new_cipher) | |
2779 | return NULL; | |
2780 | ssl_set_masks(s); | |
2781 | ||
2782 | i = ssl_get_server_cert_index(s); | |
2783 | ||
2784 | /* This may or may not be an error. */ | |
2785 | if (i < 0) | |
2786 | return NULL; | |
2787 | ||
2788 | /* May be NULL. */ | |
2789 | return &c->pkeys[i]; | |
2790 | } | |
2791 | ||
2792 | EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, | |
2793 | const EVP_MD **pmd) | |
2794 | { | |
2795 | unsigned long alg_a; | |
2796 | CERT *c; | |
2797 | int idx = -1; | |
2798 | ||
2799 | alg_a = cipher->algorithm_auth; | |
2800 | c = s->cert; | |
2801 | ||
2802 | if ((alg_a & SSL_aDSS) && (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) | |
2803 | idx = SSL_PKEY_DSA_SIGN; | |
2804 | else if (alg_a & SSL_aRSA) { | |
2805 | if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) | |
2806 | idx = SSL_PKEY_RSA_SIGN; | |
2807 | else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) | |
2808 | idx = SSL_PKEY_RSA_ENC; | |
2809 | } else if ((alg_a & SSL_aECDSA) && | |
2810 | (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) | |
2811 | idx = SSL_PKEY_ECC; | |
2812 | if (idx == -1) { | |
2813 | SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); | |
2814 | return (NULL); | |
2815 | } | |
2816 | if (pmd) | |
2817 | *pmd = s->s3->tmp.md[idx]; | |
2818 | return c->pkeys[idx].privatekey; | |
2819 | } | |
2820 | ||
2821 | int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, | |
2822 | size_t *serverinfo_length) | |
2823 | { | |
2824 | CERT *c = NULL; | |
2825 | int i = 0; | |
2826 | *serverinfo_length = 0; | |
2827 | ||
2828 | c = s->cert; | |
2829 | i = ssl_get_server_cert_index(s); | |
2830 | ||
2831 | if (i == -1) | |
2832 | return 0; | |
2833 | if (c->pkeys[i].serverinfo == NULL) | |
2834 | return 0; | |
2835 | ||
2836 | *serverinfo = c->pkeys[i].serverinfo; | |
2837 | *serverinfo_length = c->pkeys[i].serverinfo_length; | |
2838 | return 1; | |
2839 | } | |
2840 | ||
2841 | void ssl_update_cache(SSL *s, int mode) | |
2842 | { | |
2843 | int i; | |
2844 | ||
2845 | /* | |
2846 | * If the session_id_length is 0, we are not supposed to cache it, and it | |
2847 | * would be rather hard to do anyway :-) | |
2848 | */ | |
2849 | if (s->session->session_id_length == 0) | |
2850 | return; | |
2851 | ||
2852 | i = s->session_ctx->session_cache_mode; | |
2853 | if ((i & mode) && (!s->hit) | |
2854 | && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) | |
2855 | || SSL_CTX_add_session(s->session_ctx, s->session)) | |
2856 | && (s->session_ctx->new_session_cb != NULL)) { | |
2857 | SSL_SESSION_up_ref(s->session); | |
2858 | if (!s->session_ctx->new_session_cb(s, s->session)) | |
2859 | SSL_SESSION_free(s->session); | |
2860 | } | |
2861 | ||
2862 | /* auto flush every 255 connections */ | |
2863 | if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { | |
2864 | if ((((mode & SSL_SESS_CACHE_CLIENT) | |
2865 | ? s->session_ctx->stats.sess_connect_good | |
2866 | : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { | |
2867 | SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); | |
2868 | } | |
2869 | } | |
2870 | } | |
2871 | ||
2872 | const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) | |
2873 | { | |
2874 | return ctx->method; | |
2875 | } | |
2876 | ||
2877 | const SSL_METHOD *SSL_get_ssl_method(SSL *s) | |
2878 | { | |
2879 | return (s->method); | |
2880 | } | |
2881 | ||
2882 | int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) | |
2883 | { | |
2884 | int ret = 1; | |
2885 | ||
2886 | if (s->method != meth) { | |
2887 | const SSL_METHOD *sm = s->method; | |
2888 | int (*hf) (SSL *) = s->handshake_func; | |
2889 | ||
2890 | if (sm->version == meth->version) | |
2891 | s->method = meth; | |
2892 | else { | |
2893 | sm->ssl_free(s); | |
2894 | s->method = meth; | |
2895 | ret = s->method->ssl_new(s); | |
2896 | } | |
2897 | ||
2898 | if (hf == sm->ssl_connect) | |
2899 | s->handshake_func = meth->ssl_connect; | |
2900 | else if (hf == sm->ssl_accept) | |
2901 | s->handshake_func = meth->ssl_accept; | |
2902 | } | |
2903 | return (ret); | |
2904 | } | |
2905 | ||
2906 | int SSL_get_error(const SSL *s, int i) | |
2907 | { | |
2908 | int reason; | |
2909 | unsigned long l; | |
2910 | BIO *bio; | |
2911 | ||
2912 | if (i > 0) | |
2913 | return (SSL_ERROR_NONE); | |
2914 | ||
2915 | /* | |
2916 | * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, | |
2917 | * where we do encode the error | |
2918 | */ | |
2919 | if ((l = ERR_peek_error()) != 0) { | |
2920 | if (ERR_GET_LIB(l) == ERR_LIB_SYS) | |
2921 | return (SSL_ERROR_SYSCALL); | |
2922 | else | |
2923 | return (SSL_ERROR_SSL); | |
2924 | } | |
2925 | ||
2926 | if (i < 0) { | |
2927 | if (SSL_want_read(s)) { | |
2928 | bio = SSL_get_rbio(s); | |
2929 | if (BIO_should_read(bio)) | |
2930 | return (SSL_ERROR_WANT_READ); | |
2931 | else if (BIO_should_write(bio)) | |
2932 | /* | |
2933 | * This one doesn't make too much sense ... We never try to write | |
2934 | * to the rbio, and an application program where rbio and wbio | |
2935 | * are separate couldn't even know what it should wait for. | |
2936 | * However if we ever set s->rwstate incorrectly (so that we have | |
2937 | * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and | |
2938 | * wbio *are* the same, this test works around that bug; so it | |
2939 | * might be safer to keep it. | |
2940 | */ | |
2941 | return (SSL_ERROR_WANT_WRITE); | |
2942 | else if (BIO_should_io_special(bio)) { | |
2943 | reason = BIO_get_retry_reason(bio); | |
2944 | if (reason == BIO_RR_CONNECT) | |
2945 | return (SSL_ERROR_WANT_CONNECT); | |
2946 | else if (reason == BIO_RR_ACCEPT) | |
2947 | return (SSL_ERROR_WANT_ACCEPT); | |
2948 | else | |
2949 | return (SSL_ERROR_SYSCALL); /* unknown */ | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | if (SSL_want_write(s)) { | |
2954 | /* | |
2955 | * Access wbio directly - in order to use the buffered bio if | |
2956 | * present | |
2957 | */ | |
2958 | bio = s->wbio; | |
2959 | if (BIO_should_write(bio)) | |
2960 | return (SSL_ERROR_WANT_WRITE); | |
2961 | else if (BIO_should_read(bio)) | |
2962 | /* | |
2963 | * See above (SSL_want_read(s) with BIO_should_write(bio)) | |
2964 | */ | |
2965 | return (SSL_ERROR_WANT_READ); | |
2966 | else if (BIO_should_io_special(bio)) { | |
2967 | reason = BIO_get_retry_reason(bio); | |
2968 | if (reason == BIO_RR_CONNECT) | |
2969 | return (SSL_ERROR_WANT_CONNECT); | |
2970 | else if (reason == BIO_RR_ACCEPT) | |
2971 | return (SSL_ERROR_WANT_ACCEPT); | |
2972 | else | |
2973 | return (SSL_ERROR_SYSCALL); | |
2974 | } | |
2975 | } | |
2976 | if (SSL_want_x509_lookup(s)) { | |
2977 | return (SSL_ERROR_WANT_X509_LOOKUP); | |
2978 | } | |
2979 | if (SSL_want_async(s)) { | |
2980 | return SSL_ERROR_WANT_ASYNC; | |
2981 | } | |
2982 | if (SSL_want_async_job(s)) { | |
2983 | return SSL_ERROR_WANT_ASYNC_JOB; | |
2984 | } | |
2985 | } | |
2986 | ||
2987 | if (i == 0) { | |
2988 | if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && | |
2989 | (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) | |
2990 | return (SSL_ERROR_ZERO_RETURN); | |
2991 | } | |
2992 | return (SSL_ERROR_SYSCALL); | |
2993 | } | |
2994 | ||
2995 | static int ssl_do_handshake_intern(void *vargs) | |
2996 | { | |
2997 | struct ssl_async_args *args; | |
2998 | SSL *s; | |
2999 | ||
3000 | args = (struct ssl_async_args *)vargs; | |
3001 | s = args->s; | |
3002 | ||
3003 | return s->handshake_func(s); | |
3004 | } | |
3005 | ||
3006 | int SSL_do_handshake(SSL *s) | |
3007 | { | |
3008 | int ret = 1; | |
3009 | ||
3010 | if (s->handshake_func == NULL) { | |
3011 | SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); | |
3012 | return -1; | |
3013 | } | |
3014 | ||
3015 | s->method->ssl_renegotiate_check(s); | |
3016 | ||
3017 | if (SSL_in_init(s) || SSL_in_before(s)) { | |
3018 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
3019 | struct ssl_async_args args; | |
3020 | ||
3021 | args.s = s; | |
3022 | ||
3023 | ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern); | |
3024 | } else { | |
3025 | ret = s->handshake_func(s); | |
3026 | } | |
3027 | } | |
3028 | return ret; | |
3029 | } | |
3030 | ||
3031 | void SSL_set_accept_state(SSL *s) | |
3032 | { | |
3033 | s->server = 1; | |
3034 | s->shutdown = 0; | |
3035 | ossl_statem_clear(s); | |
3036 | s->handshake_func = s->method->ssl_accept; | |
3037 | clear_ciphers(s); | |
3038 | } | |
3039 | ||
3040 | void SSL_set_connect_state(SSL *s) | |
3041 | { | |
3042 | s->server = 0; | |
3043 | s->shutdown = 0; | |
3044 | ossl_statem_clear(s); | |
3045 | s->handshake_func = s->method->ssl_connect; | |
3046 | clear_ciphers(s); | |
3047 | } | |
3048 | ||
3049 | int ssl_undefined_function(SSL *s) | |
3050 | { | |
3051 | SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3052 | return (0); | |
3053 | } | |
3054 | ||
3055 | int ssl_undefined_void_function(void) | |
3056 | { | |
3057 | SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, | |
3058 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3059 | return (0); | |
3060 | } | |
3061 | ||
3062 | int ssl_undefined_const_function(const SSL *s) | |
3063 | { | |
3064 | return (0); | |
3065 | } | |
3066 | ||
3067 | const SSL_METHOD *ssl_bad_method(int ver) | |
3068 | { | |
3069 | SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3070 | return (NULL); | |
3071 | } | |
3072 | ||
3073 | const char *ssl_protocol_to_string(int version) | |
3074 | { | |
3075 | if (version == TLS1_2_VERSION) | |
3076 | return "TLSv1.2"; | |
3077 | else if (version == TLS1_1_VERSION) | |
3078 | return "TLSv1.1"; | |
3079 | else if (version == TLS1_VERSION) | |
3080 | return "TLSv1"; | |
3081 | else if (version == SSL3_VERSION) | |
3082 | return "SSLv3"; | |
3083 | else if (version == DTLS1_BAD_VER) | |
3084 | return "DTLSv0.9"; | |
3085 | else if (version == DTLS1_VERSION) | |
3086 | return "DTLSv1"; | |
3087 | else if (version == DTLS1_2_VERSION) | |
3088 | return "DTLSv1.2"; | |
3089 | else | |
3090 | return ("unknown"); | |
3091 | } | |
3092 | ||
3093 | const char *SSL_get_version(const SSL *s) | |
3094 | { | |
3095 | return ssl_protocol_to_string(s->version); | |
3096 | } | |
3097 | ||
3098 | SSL *SSL_dup(SSL *s) | |
3099 | { | |
3100 | STACK_OF(X509_NAME) *sk; | |
3101 | X509_NAME *xn; | |
3102 | SSL *ret; | |
3103 | int i; | |
3104 | ||
3105 | /* If we're not quiescent, just up_ref! */ | |
3106 | if (!SSL_in_init(s) || !SSL_in_before(s)) { | |
3107 | CRYPTO_atomic_add(&s->references, 1, &i, s->lock); | |
3108 | return s; | |
3109 | } | |
3110 | ||
3111 | /* | |
3112 | * Otherwise, copy configuration state, and session if set. | |
3113 | */ | |
3114 | if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) | |
3115 | return (NULL); | |
3116 | ||
3117 | if (s->session != NULL) { | |
3118 | /* | |
3119 | * Arranges to share the same session via up_ref. This "copies" | |
3120 | * session-id, SSL_METHOD, sid_ctx, and 'cert' | |
3121 | */ | |
3122 | if (!SSL_copy_session_id(ret, s)) | |
3123 | goto err; | |
3124 | } else { | |
3125 | /* | |
3126 | * No session has been established yet, so we have to expect that | |
3127 | * s->cert or ret->cert will be changed later -- they should not both | |
3128 | * point to the same object, and thus we can't use | |
3129 | * SSL_copy_session_id. | |
3130 | */ | |
3131 | if (!SSL_set_ssl_method(ret, s->method)) | |
3132 | goto err; | |
3133 | ||
3134 | if (s->cert != NULL) { | |
3135 | ssl_cert_free(ret->cert); | |
3136 | ret->cert = ssl_cert_dup(s->cert); | |
3137 | if (ret->cert == NULL) | |
3138 | goto err; | |
3139 | } | |
3140 | ||
3141 | if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length)) | |
3142 | goto err; | |
3143 | } | |
3144 | ||
3145 | if (!ssl_dane_dup(ret, s)) | |
3146 | goto err; | |
3147 | ret->version = s->version; | |
3148 | ret->options = s->options; | |
3149 | ret->mode = s->mode; | |
3150 | SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); | |
3151 | SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); | |
3152 | ret->msg_callback = s->msg_callback; | |
3153 | ret->msg_callback_arg = s->msg_callback_arg; | |
3154 | SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); | |
3155 | SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); | |
3156 | ret->generate_session_id = s->generate_session_id; | |
3157 | ||
3158 | SSL_set_info_callback(ret, SSL_get_info_callback(s)); | |
3159 | ||
3160 | /* copy app data, a little dangerous perhaps */ | |
3161 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) | |
3162 | goto err; | |
3163 | ||
3164 | /* setup rbio, and wbio */ | |
3165 | if (s->rbio != NULL) { | |
3166 | if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) | |
3167 | goto err; | |
3168 | } | |
3169 | if (s->wbio != NULL) { | |
3170 | if (s->wbio != s->rbio) { | |
3171 | if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) | |
3172 | goto err; | |
3173 | } else { | |
3174 | BIO_up_ref(ret->rbio); | |
3175 | ret->wbio = ret->rbio; | |
3176 | } | |
3177 | } | |
3178 | ||
3179 | ret->server = s->server; | |
3180 | if (s->handshake_func) { | |
3181 | if (s->server) | |
3182 | SSL_set_accept_state(ret); | |
3183 | else | |
3184 | SSL_set_connect_state(ret); | |
3185 | } | |
3186 | ret->shutdown = s->shutdown; | |
3187 | ret->hit = s->hit; | |
3188 | ||
3189 | ret->default_passwd_callback = s->default_passwd_callback; | |
3190 | ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata; | |
3191 | ||
3192 | X509_VERIFY_PARAM_inherit(ret->param, s->param); | |
3193 | ||
3194 | /* dup the cipher_list and cipher_list_by_id stacks */ | |
3195 | if (s->cipher_list != NULL) { | |
3196 | if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) | |
3197 | goto err; | |
3198 | } | |
3199 | if (s->cipher_list_by_id != NULL) | |
3200 | if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) | |
3201 | == NULL) | |
3202 | goto err; | |
3203 | ||
3204 | /* Dup the client_CA list */ | |
3205 | if (s->client_CA != NULL) { | |
3206 | if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) | |
3207 | goto err; | |
3208 | ret->client_CA = sk; | |
3209 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
3210 | xn = sk_X509_NAME_value(sk, i); | |
3211 | if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { | |
3212 | X509_NAME_free(xn); | |
3213 | goto err; | |
3214 | } | |
3215 | } | |
3216 | } | |
3217 | return ret; | |
3218 | ||
3219 | err: | |
3220 | SSL_free(ret); | |
3221 | return NULL; | |
3222 | } | |
3223 | ||
3224 | void ssl_clear_cipher_ctx(SSL *s) | |
3225 | { | |
3226 | if (s->enc_read_ctx != NULL) { | |
3227 | EVP_CIPHER_CTX_free(s->enc_read_ctx); | |
3228 | s->enc_read_ctx = NULL; | |
3229 | } | |
3230 | if (s->enc_write_ctx != NULL) { | |
3231 | EVP_CIPHER_CTX_free(s->enc_write_ctx); | |
3232 | s->enc_write_ctx = NULL; | |
3233 | } | |
3234 | #ifndef OPENSSL_NO_COMP | |
3235 | COMP_CTX_free(s->expand); | |
3236 | s->expand = NULL; | |
3237 | COMP_CTX_free(s->compress); | |
3238 | s->compress = NULL; | |
3239 | #endif | |
3240 | } | |
3241 | ||
3242 | X509 *SSL_get_certificate(const SSL *s) | |
3243 | { | |
3244 | if (s->cert != NULL) | |
3245 | return (s->cert->key->x509); | |
3246 | else | |
3247 | return (NULL); | |
3248 | } | |
3249 | ||
3250 | EVP_PKEY *SSL_get_privatekey(const SSL *s) | |
3251 | { | |
3252 | if (s->cert != NULL) | |
3253 | return (s->cert->key->privatekey); | |
3254 | else | |
3255 | return (NULL); | |
3256 | } | |
3257 | ||
3258 | X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) | |
3259 | { | |
3260 | if (ctx->cert != NULL) | |
3261 | return ctx->cert->key->x509; | |
3262 | else | |
3263 | return NULL; | |
3264 | } | |
3265 | ||
3266 | EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) | |
3267 | { | |
3268 | if (ctx->cert != NULL) | |
3269 | return ctx->cert->key->privatekey; | |
3270 | else | |
3271 | return NULL; | |
3272 | } | |
3273 | ||
3274 | const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) | |
3275 | { | |
3276 | if ((s->session != NULL) && (s->session->cipher != NULL)) | |
3277 | return (s->session->cipher); | |
3278 | return (NULL); | |
3279 | } | |
3280 | ||
3281 | const COMP_METHOD *SSL_get_current_compression(SSL *s) | |
3282 | { | |
3283 | #ifndef OPENSSL_NO_COMP | |
3284 | return s->compress ? COMP_CTX_get_method(s->compress) : NULL; | |
3285 | #else | |
3286 | return NULL; | |
3287 | #endif | |
3288 | } | |
3289 | ||
3290 | const COMP_METHOD *SSL_get_current_expansion(SSL *s) | |
3291 | { | |
3292 | #ifndef OPENSSL_NO_COMP | |
3293 | return s->expand ? COMP_CTX_get_method(s->expand) : NULL; | |
3294 | #else | |
3295 | return NULL; | |
3296 | #endif | |
3297 | } | |
3298 | ||
3299 | int ssl_init_wbio_buffer(SSL *s) | |
3300 | { | |
3301 | BIO *bbio; | |
3302 | ||
3303 | if (s->bbio != NULL) { | |
3304 | /* Already buffered. */ | |
3305 | return 1; | |
3306 | } | |
3307 | ||
3308 | bbio = BIO_new(BIO_f_buffer()); | |
3309 | if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) { | |
3310 | BIO_free(bbio); | |
3311 | SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); | |
3312 | return 0; | |
3313 | } | |
3314 | s->bbio = bbio; | |
3315 | s->wbio = BIO_push(bbio, s->wbio); | |
3316 | ||
3317 | return 1; | |
3318 | } | |
3319 | ||
3320 | void ssl_free_wbio_buffer(SSL *s) | |
3321 | { | |
3322 | /* callers ensure s is never null */ | |
3323 | if (s->bbio == NULL) | |
3324 | return; | |
3325 | ||
3326 | s->wbio = BIO_pop(s->wbio); | |
3327 | assert(s->wbio != NULL); | |
3328 | BIO_free(s->bbio); | |
3329 | s->bbio = NULL; | |
3330 | } | |
3331 | ||
3332 | void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) | |
3333 | { | |
3334 | ctx->quiet_shutdown = mode; | |
3335 | } | |
3336 | ||
3337 | int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) | |
3338 | { | |
3339 | return (ctx->quiet_shutdown); | |
3340 | } | |
3341 | ||
3342 | void SSL_set_quiet_shutdown(SSL *s, int mode) | |
3343 | { | |
3344 | s->quiet_shutdown = mode; | |
3345 | } | |
3346 | ||
3347 | int SSL_get_quiet_shutdown(const SSL *s) | |
3348 | { | |
3349 | return (s->quiet_shutdown); | |
3350 | } | |
3351 | ||
3352 | void SSL_set_shutdown(SSL *s, int mode) | |
3353 | { | |
3354 | s->shutdown = mode; | |
3355 | } | |
3356 | ||
3357 | int SSL_get_shutdown(const SSL *s) | |
3358 | { | |
3359 | return s->shutdown; | |
3360 | } | |
3361 | ||
3362 | int SSL_version(const SSL *s) | |
3363 | { | |
3364 | return s->version; | |
3365 | } | |
3366 | ||
3367 | int SSL_client_version(const SSL *s) | |
3368 | { | |
3369 | return s->client_version; | |
3370 | } | |
3371 | ||
3372 | SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) | |
3373 | { | |
3374 | return ssl->ctx; | |
3375 | } | |
3376 | ||
3377 | SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) | |
3378 | { | |
3379 | CERT *new_cert; | |
3380 | if (ssl->ctx == ctx) | |
3381 | return ssl->ctx; | |
3382 | if (ctx == NULL) | |
3383 | ctx = ssl->initial_ctx; | |
3384 | new_cert = ssl_cert_dup(ctx->cert); | |
3385 | if (new_cert == NULL) { | |
3386 | return NULL; | |
3387 | } | |
3388 | ssl_cert_free(ssl->cert); | |
3389 | ssl->cert = new_cert; | |
3390 | ||
3391 | /* | |
3392 | * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), | |
3393 | * so setter APIs must prevent invalid lengths from entering the system. | |
3394 | */ | |
3395 | OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); | |
3396 | ||
3397 | /* | |
3398 | * If the session ID context matches that of the parent SSL_CTX, | |
3399 | * inherit it from the new SSL_CTX as well. If however the context does | |
3400 | * not match (i.e., it was set per-ssl with SSL_set_session_id_context), | |
3401 | * leave it unchanged. | |
3402 | */ | |
3403 | if ((ssl->ctx != NULL) && | |
3404 | (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && | |
3405 | (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { | |
3406 | ssl->sid_ctx_length = ctx->sid_ctx_length; | |
3407 | memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); | |
3408 | } | |
3409 | ||
3410 | SSL_CTX_up_ref(ctx); | |
3411 | SSL_CTX_free(ssl->ctx); /* decrement reference count */ | |
3412 | ssl->ctx = ctx; | |
3413 | ||
3414 | return ssl->ctx; | |
3415 | } | |
3416 | ||
3417 | int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) | |
3418 | { | |
3419 | return (X509_STORE_set_default_paths(ctx->cert_store)); | |
3420 | } | |
3421 | ||
3422 | int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx) | |
3423 | { | |
3424 | X509_LOOKUP *lookup; | |
3425 | ||
3426 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir()); | |
3427 | if (lookup == NULL) | |
3428 | return 0; | |
3429 | X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3430 | ||
3431 | /* Clear any errors if the default directory does not exist */ | |
3432 | ERR_clear_error(); | |
3433 | ||
3434 | return 1; | |
3435 | } | |
3436 | ||
3437 | int SSL_CTX_set_default_verify_file(SSL_CTX *ctx) | |
3438 | { | |
3439 | X509_LOOKUP *lookup; | |
3440 | ||
3441 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file()); | |
3442 | if (lookup == NULL) | |
3443 | return 0; | |
3444 | ||
3445 | X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3446 | ||
3447 | /* Clear any errors if the default file does not exist */ | |
3448 | ERR_clear_error(); | |
3449 | ||
3450 | return 1; | |
3451 | } | |
3452 | ||
3453 | int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, | |
3454 | const char *CApath) | |
3455 | { | |
3456 | return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); | |
3457 | } | |
3458 | ||
3459 | void SSL_set_info_callback(SSL *ssl, | |
3460 | void (*cb) (const SSL *ssl, int type, int val)) | |
3461 | { | |
3462 | ssl->info_callback = cb; | |
3463 | } | |
3464 | ||
3465 | /* | |
3466 | * One compiler (Diab DCC) doesn't like argument names in returned function | |
3467 | * pointer. | |
3468 | */ | |
3469 | void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , | |
3470 | int /* type */ , | |
3471 | int /* val */ ) { | |
3472 | return ssl->info_callback; | |
3473 | } | |
3474 | ||
3475 | void SSL_set_verify_result(SSL *ssl, long arg) | |
3476 | { | |
3477 | ssl->verify_result = arg; | |
3478 | } | |
3479 | ||
3480 | long SSL_get_verify_result(const SSL *ssl) | |
3481 | { | |
3482 | return (ssl->verify_result); | |
3483 | } | |
3484 | ||
3485 | size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3486 | { | |
3487 | if (outlen == 0) | |
3488 | return sizeof(ssl->s3->client_random); | |
3489 | if (outlen > sizeof(ssl->s3->client_random)) | |
3490 | outlen = sizeof(ssl->s3->client_random); | |
3491 | memcpy(out, ssl->s3->client_random, outlen); | |
3492 | return outlen; | |
3493 | } | |
3494 | ||
3495 | size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3496 | { | |
3497 | if (outlen == 0) | |
3498 | return sizeof(ssl->s3->server_random); | |
3499 | if (outlen > sizeof(ssl->s3->server_random)) | |
3500 | outlen = sizeof(ssl->s3->server_random); | |
3501 | memcpy(out, ssl->s3->server_random, outlen); | |
3502 | return outlen; | |
3503 | } | |
3504 | ||
3505 | size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, | |
3506 | unsigned char *out, size_t outlen) | |
3507 | { | |
3508 | if (session->master_key_length < 0) { | |
3509 | /* Should never happen */ | |
3510 | return 0; | |
3511 | } | |
3512 | if (outlen == 0) | |
3513 | return session->master_key_length; | |
3514 | if (outlen > (size_t)session->master_key_length) | |
3515 | outlen = session->master_key_length; | |
3516 | memcpy(out, session->master_key, outlen); | |
3517 | return outlen; | |
3518 | } | |
3519 | ||
3520 | int SSL_set_ex_data(SSL *s, int idx, void *arg) | |
3521 | { | |
3522 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3523 | } | |
3524 | ||
3525 | void *SSL_get_ex_data(const SSL *s, int idx) | |
3526 | { | |
3527 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3528 | } | |
3529 | ||
3530 | int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) | |
3531 | { | |
3532 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3533 | } | |
3534 | ||
3535 | void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) | |
3536 | { | |
3537 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3538 | } | |
3539 | ||
3540 | int ssl_ok(SSL *s) | |
3541 | { | |
3542 | return (1); | |
3543 | } | |
3544 | ||
3545 | X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) | |
3546 | { | |
3547 | return (ctx->cert_store); | |
3548 | } | |
3549 | ||
3550 | void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
3551 | { | |
3552 | X509_STORE_free(ctx->cert_store); | |
3553 | ctx->cert_store = store; | |
3554 | } | |
3555 | ||
3556 | int SSL_want(const SSL *s) | |
3557 | { | |
3558 | return (s->rwstate); | |
3559 | } | |
3560 | ||
3561 | /** | |
3562 | * \brief Set the callback for generating temporary DH keys. | |
3563 | * \param ctx the SSL context. | |
3564 | * \param dh the callback | |
3565 | */ | |
3566 | ||
3567 | #ifndef OPENSSL_NO_DH | |
3568 | void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, | |
3569 | DH *(*dh) (SSL *ssl, int is_export, | |
3570 | int keylength)) | |
3571 | { | |
3572 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3573 | } | |
3574 | ||
3575 | void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, | |
3576 | int keylength)) | |
3577 | { | |
3578 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3579 | } | |
3580 | #endif | |
3581 | ||
3582 | #ifndef OPENSSL_NO_PSK | |
3583 | int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) | |
3584 | { | |
3585 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3586 | SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3587 | return 0; | |
3588 | } | |
3589 | OPENSSL_free(ctx->cert->psk_identity_hint); | |
3590 | if (identity_hint != NULL) { | |
3591 | ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3592 | if (ctx->cert->psk_identity_hint == NULL) | |
3593 | return 0; | |
3594 | } else | |
3595 | ctx->cert->psk_identity_hint = NULL; | |
3596 | return 1; | |
3597 | } | |
3598 | ||
3599 | int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) | |
3600 | { | |
3601 | if (s == NULL) | |
3602 | return 0; | |
3603 | ||
3604 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3605 | SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3606 | return 0; | |
3607 | } | |
3608 | OPENSSL_free(s->cert->psk_identity_hint); | |
3609 | if (identity_hint != NULL) { | |
3610 | s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3611 | if (s->cert->psk_identity_hint == NULL) | |
3612 | return 0; | |
3613 | } else | |
3614 | s->cert->psk_identity_hint = NULL; | |
3615 | return 1; | |
3616 | } | |
3617 | ||
3618 | const char *SSL_get_psk_identity_hint(const SSL *s) | |
3619 | { | |
3620 | if (s == NULL || s->session == NULL) | |
3621 | return NULL; | |
3622 | return (s->session->psk_identity_hint); | |
3623 | } | |
3624 | ||
3625 | const char *SSL_get_psk_identity(const SSL *s) | |
3626 | { | |
3627 | if (s == NULL || s->session == NULL) | |
3628 | return NULL; | |
3629 | return (s->session->psk_identity); | |
3630 | } | |
3631 | ||
3632 | void SSL_set_psk_client_callback(SSL *s, | |
3633 | unsigned int (*cb) (SSL *ssl, | |
3634 | const char *hint, | |
3635 | char *identity, | |
3636 | unsigned int | |
3637 | max_identity_len, | |
3638 | unsigned char *psk, | |
3639 | unsigned int max_psk_len)) | |
3640 | { | |
3641 | s->psk_client_callback = cb; | |
3642 | } | |
3643 | ||
3644 | void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, | |
3645 | unsigned int (*cb) (SSL *ssl, | |
3646 | const char *hint, | |
3647 | char *identity, | |
3648 | unsigned int | |
3649 | max_identity_len, | |
3650 | unsigned char *psk, | |
3651 | unsigned int | |
3652 | max_psk_len)) | |
3653 | { | |
3654 | ctx->psk_client_callback = cb; | |
3655 | } | |
3656 | ||
3657 | void SSL_set_psk_server_callback(SSL *s, | |
3658 | unsigned int (*cb) (SSL *ssl, | |
3659 | const char *identity, | |
3660 | unsigned char *psk, | |
3661 | unsigned int max_psk_len)) | |
3662 | { | |
3663 | s->psk_server_callback = cb; | |
3664 | } | |
3665 | ||
3666 | void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, | |
3667 | unsigned int (*cb) (SSL *ssl, | |
3668 | const char *identity, | |
3669 | unsigned char *psk, | |
3670 | unsigned int | |
3671 | max_psk_len)) | |
3672 | { | |
3673 | ctx->psk_server_callback = cb; | |
3674 | } | |
3675 | #endif | |
3676 | ||
3677 | void SSL_CTX_set_msg_callback(SSL_CTX *ctx, | |
3678 | void (*cb) (int write_p, int version, | |
3679 | int content_type, const void *buf, | |
3680 | size_t len, SSL *ssl, void *arg)) | |
3681 | { | |
3682 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3683 | } | |
3684 | ||
3685 | void SSL_set_msg_callback(SSL *ssl, | |
3686 | void (*cb) (int write_p, int version, | |
3687 | int content_type, const void *buf, | |
3688 | size_t len, SSL *ssl, void *arg)) | |
3689 | { | |
3690 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3691 | } | |
3692 | ||
3693 | void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, | |
3694 | int (*cb) (SSL *ssl, | |
3695 | int | |
3696 | is_forward_secure)) | |
3697 | { | |
3698 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3699 | (void (*)(void))cb); | |
3700 | } | |
3701 | ||
3702 | void SSL_set_not_resumable_session_callback(SSL *ssl, | |
3703 | int (*cb) (SSL *ssl, | |
3704 | int is_forward_secure)) | |
3705 | { | |
3706 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3707 | (void (*)(void))cb); | |
3708 | } | |
3709 | ||
3710 | /* | |
3711 | * Allocates new EVP_MD_CTX and sets pointer to it into given pointer | |
3712 | * variable, freeing EVP_MD_CTX previously stored in that variable, if any. | |
3713 | * If EVP_MD pointer is passed, initializes ctx with this md Returns newly | |
3714 | * allocated ctx; | |
3715 | */ | |
3716 | ||
3717 | EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) | |
3718 | { | |
3719 | ssl_clear_hash_ctx(hash); | |
3720 | *hash = EVP_MD_CTX_new(); | |
3721 | if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { | |
3722 | EVP_MD_CTX_free(*hash); | |
3723 | *hash = NULL; | |
3724 | return NULL; | |
3725 | } | |
3726 | return *hash; | |
3727 | } | |
3728 | ||
3729 | void ssl_clear_hash_ctx(EVP_MD_CTX **hash) | |
3730 | { | |
3731 | ||
3732 | if (*hash) | |
3733 | EVP_MD_CTX_free(*hash); | |
3734 | *hash = NULL; | |
3735 | } | |
3736 | ||
3737 | /* Retrieve handshake hashes */ | |
3738 | int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen) | |
3739 | { | |
3740 | EVP_MD_CTX *ctx = NULL; | |
3741 | EVP_MD_CTX *hdgst = s->s3->handshake_dgst; | |
3742 | int ret = EVP_MD_CTX_size(hdgst); | |
3743 | if (ret < 0 || ret > outlen) { | |
3744 | ret = 0; | |
3745 | goto err; | |
3746 | } | |
3747 | ctx = EVP_MD_CTX_new(); | |
3748 | if (ctx == NULL) { | |
3749 | ret = 0; | |
3750 | goto err; | |
3751 | } | |
3752 | if (!EVP_MD_CTX_copy_ex(ctx, hdgst) | |
3753 | || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) | |
3754 | ret = 0; | |
3755 | err: | |
3756 | EVP_MD_CTX_free(ctx); | |
3757 | return ret; | |
3758 | } | |
3759 | ||
3760 | int SSL_session_reused(SSL *s) | |
3761 | { | |
3762 | return s->hit; | |
3763 | } | |
3764 | ||
3765 | int SSL_is_server(SSL *s) | |
3766 | { | |
3767 | return s->server; | |
3768 | } | |
3769 | ||
3770 | #if OPENSSL_API_COMPAT < 0x10100000L | |
3771 | void SSL_set_debug(SSL *s, int debug) | |
3772 | { | |
3773 | /* Old function was do-nothing anyway... */ | |
3774 | (void)s; | |
3775 | (void)debug; | |
3776 | } | |
3777 | #endif | |
3778 | ||
3779 | void SSL_set_security_level(SSL *s, int level) | |
3780 | { | |
3781 | s->cert->sec_level = level; | |
3782 | } | |
3783 | ||
3784 | int SSL_get_security_level(const SSL *s) | |
3785 | { | |
3786 | return s->cert->sec_level; | |
3787 | } | |
3788 | ||
3789 | void SSL_set_security_callback(SSL *s, | |
3790 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
3791 | int op, int bits, int nid, | |
3792 | void *other, void *ex)) | |
3793 | { | |
3794 | s->cert->sec_cb = cb; | |
3795 | } | |
3796 | ||
3797 | int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, | |
3798 | const SSL_CTX *ctx, int op, | |
3799 | int bits, int nid, void *other, | |
3800 | void *ex) { | |
3801 | return s->cert->sec_cb; | |
3802 | } | |
3803 | ||
3804 | void SSL_set0_security_ex_data(SSL *s, void *ex) | |
3805 | { | |
3806 | s->cert->sec_ex = ex; | |
3807 | } | |
3808 | ||
3809 | void *SSL_get0_security_ex_data(const SSL *s) | |
3810 | { | |
3811 | return s->cert->sec_ex; | |
3812 | } | |
3813 | ||
3814 | void SSL_CTX_set_security_level(SSL_CTX *ctx, int level) | |
3815 | { | |
3816 | ctx->cert->sec_level = level; | |
3817 | } | |
3818 | ||
3819 | int SSL_CTX_get_security_level(const SSL_CTX *ctx) | |
3820 | { | |
3821 | return ctx->cert->sec_level; | |
3822 | } | |
3823 | ||
3824 | void SSL_CTX_set_security_callback(SSL_CTX *ctx, | |
3825 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
3826 | int op, int bits, int nid, | |
3827 | void *other, void *ex)) | |
3828 | { | |
3829 | ctx->cert->sec_cb = cb; | |
3830 | } | |
3831 | ||
3832 | int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s, | |
3833 | const SSL_CTX *ctx, | |
3834 | int op, int bits, | |
3835 | int nid, | |
3836 | void *other, | |
3837 | void *ex) { | |
3838 | return ctx->cert->sec_cb; | |
3839 | } | |
3840 | ||
3841 | void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex) | |
3842 | { | |
3843 | ctx->cert->sec_ex = ex; | |
3844 | } | |
3845 | ||
3846 | void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx) | |
3847 | { | |
3848 | return ctx->cert->sec_ex; | |
3849 | } | |
3850 | ||
3851 | /* | |
3852 | * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that | |
3853 | * can return unsigned long, instead of the generic long return value from the | |
3854 | * control interface. | |
3855 | */ | |
3856 | unsigned long SSL_CTX_get_options(const SSL_CTX *ctx) | |
3857 | { | |
3858 | return ctx->options; | |
3859 | } | |
3860 | ||
3861 | unsigned long SSL_get_options(const SSL *s) | |
3862 | { | |
3863 | return s->options; | |
3864 | } | |
3865 | ||
3866 | unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op) | |
3867 | { | |
3868 | return ctx->options |= op; | |
3869 | } | |
3870 | ||
3871 | unsigned long SSL_set_options(SSL *s, unsigned long op) | |
3872 | { | |
3873 | return s->options |= op; | |
3874 | } | |
3875 | ||
3876 | unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op) | |
3877 | { | |
3878 | return ctx->options &= ~op; | |
3879 | } | |
3880 | ||
3881 | unsigned long SSL_clear_options(SSL *s, unsigned long op) | |
3882 | { | |
3883 | return s->options &= ~op; | |
3884 | } | |
3885 | ||
3886 | STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s) | |
3887 | { | |
3888 | return s->verified_chain; | |
3889 | } | |
3890 | ||
3891 | IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); | |
3892 | ||
3893 | #ifndef OPENSSL_NO_CT | |
3894 | ||
3895 | /* | |
3896 | * Moves SCTs from the |src| stack to the |dst| stack. | |
3897 | * The source of each SCT will be set to |origin|. | |
3898 | * If |dst| points to a NULL pointer, a new stack will be created and owned by | |
3899 | * the caller. | |
3900 | * Returns the number of SCTs moved, or a negative integer if an error occurs. | |
3901 | */ | |
3902 | static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, | |
3903 | sct_source_t origin) | |
3904 | { | |
3905 | int scts_moved = 0; | |
3906 | SCT *sct = NULL; | |
3907 | ||
3908 | if (*dst == NULL) { | |
3909 | *dst = sk_SCT_new_null(); | |
3910 | if (*dst == NULL) { | |
3911 | SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE); | |
3912 | goto err; | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | while ((sct = sk_SCT_pop(src)) != NULL) { | |
3917 | if (SCT_set_source(sct, origin) != 1) | |
3918 | goto err; | |
3919 | ||
3920 | if (sk_SCT_push(*dst, sct) <= 0) | |
3921 | goto err; | |
3922 | scts_moved += 1; | |
3923 | } | |
3924 | ||
3925 | return scts_moved; | |
3926 | err: | |
3927 | if (sct != NULL) | |
3928 | sk_SCT_push(src, sct); /* Put the SCT back */ | |
3929 | return -1; | |
3930 | } | |
3931 | ||
3932 | /* | |
3933 | * Look for data collected during ServerHello and parse if found. | |
3934 | * Returns the number of SCTs extracted. | |
3935 | */ | |
3936 | static int ct_extract_tls_extension_scts(SSL *s) | |
3937 | { | |
3938 | int scts_extracted = 0; | |
3939 | ||
3940 | if (s->tlsext_scts != NULL) { | |
3941 | const unsigned char *p = s->tlsext_scts; | |
3942 | STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len); | |
3943 | ||
3944 | scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION); | |
3945 | ||
3946 | SCT_LIST_free(scts); | |
3947 | } | |
3948 | ||
3949 | return scts_extracted; | |
3950 | } | |
3951 | ||
3952 | /* | |
3953 | * Checks for an OCSP response and then attempts to extract any SCTs found if it | |
3954 | * contains an SCT X509 extension. They will be stored in |s->scts|. | |
3955 | * Returns: | |
3956 | * - The number of SCTs extracted, assuming an OCSP response exists. | |
3957 | * - 0 if no OCSP response exists or it contains no SCTs. | |
3958 | * - A negative integer if an error occurs. | |
3959 | */ | |
3960 | static int ct_extract_ocsp_response_scts(SSL *s) | |
3961 | { | |
3962 | # ifndef OPENSSL_NO_OCSP | |
3963 | int scts_extracted = 0; | |
3964 | const unsigned char *p; | |
3965 | OCSP_BASICRESP *br = NULL; | |
3966 | OCSP_RESPONSE *rsp = NULL; | |
3967 | STACK_OF(SCT) *scts = NULL; | |
3968 | int i; | |
3969 | ||
3970 | if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0) | |
3971 | goto err; | |
3972 | ||
3973 | p = s->tlsext_ocsp_resp; | |
3974 | rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen); | |
3975 | if (rsp == NULL) | |
3976 | goto err; | |
3977 | ||
3978 | br = OCSP_response_get1_basic(rsp); | |
3979 | if (br == NULL) | |
3980 | goto err; | |
3981 | ||
3982 | for (i = 0; i < OCSP_resp_count(br); ++i) { | |
3983 | OCSP_SINGLERESP *single = OCSP_resp_get0(br, i); | |
3984 | ||
3985 | if (single == NULL) | |
3986 | continue; | |
3987 | ||
3988 | scts = | |
3989 | OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL); | |
3990 | scts_extracted = | |
3991 | ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE); | |
3992 | if (scts_extracted < 0) | |
3993 | goto err; | |
3994 | } | |
3995 | err: | |
3996 | SCT_LIST_free(scts); | |
3997 | OCSP_BASICRESP_free(br); | |
3998 | OCSP_RESPONSE_free(rsp); | |
3999 | return scts_extracted; | |
4000 | # else | |
4001 | /* Behave as if no OCSP response exists */ | |
4002 | return 0; | |
4003 | # endif | |
4004 | } | |
4005 | ||
4006 | /* | |
4007 | * Attempts to extract SCTs from the peer certificate. | |
4008 | * Return the number of SCTs extracted, or a negative integer if an error | |
4009 | * occurs. | |
4010 | */ | |
4011 | static int ct_extract_x509v3_extension_scts(SSL *s) | |
4012 | { | |
4013 | int scts_extracted = 0; | |
4014 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4015 | ||
4016 | if (cert != NULL) { | |
4017 | STACK_OF(SCT) *scts = | |
4018 | X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL); | |
4019 | ||
4020 | scts_extracted = | |
4021 | ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION); | |
4022 | ||
4023 | SCT_LIST_free(scts); | |
4024 | } | |
4025 | ||
4026 | return scts_extracted; | |
4027 | } | |
4028 | ||
4029 | /* | |
4030 | * Attempts to find all received SCTs by checking TLS extensions, the OCSP | |
4031 | * response (if it exists) and X509v3 extensions in the certificate. | |
4032 | * Returns NULL if an error occurs. | |
4033 | */ | |
4034 | const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s) | |
4035 | { | |
4036 | if (!s->scts_parsed) { | |
4037 | if (ct_extract_tls_extension_scts(s) < 0 || | |
4038 | ct_extract_ocsp_response_scts(s) < 0 || | |
4039 | ct_extract_x509v3_extension_scts(s) < 0) | |
4040 | goto err; | |
4041 | ||
4042 | s->scts_parsed = 1; | |
4043 | } | |
4044 | return s->scts; | |
4045 | err: | |
4046 | return NULL; | |
4047 | } | |
4048 | ||
4049 | static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx, | |
4050 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4051 | { | |
4052 | return 1; | |
4053 | } | |
4054 | ||
4055 | static int ct_strict(const CT_POLICY_EVAL_CTX * ctx, | |
4056 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4057 | { | |
4058 | int count = scts != NULL ? sk_SCT_num(scts) : 0; | |
4059 | int i; | |
4060 | ||
4061 | for (i = 0; i < count; ++i) { | |
4062 | SCT *sct = sk_SCT_value(scts, i); | |
4063 | int status = SCT_get_validation_status(sct); | |
4064 | ||
4065 | if (status == SCT_VALIDATION_STATUS_VALID) | |
4066 | return 1; | |
4067 | } | |
4068 | SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS); | |
4069 | return 0; | |
4070 | } | |
4071 | ||
4072 | int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback, | |
4073 | void *arg) | |
4074 | { | |
4075 | /* | |
4076 | * Since code exists that uses the custom extension handler for CT, look | |
4077 | * for this and throw an error if they have already registered to use CT. | |
4078 | */ | |
4079 | if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx, | |
4080 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4081 | { | |
4082 | SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK, | |
4083 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4084 | return 0; | |
4085 | } | |
4086 | ||
4087 | if (callback != NULL) { | |
4088 | /* | |
4089 | * If we are validating CT, then we MUST accept SCTs served via OCSP | |
4090 | */ | |
4091 | if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp)) | |
4092 | return 0; | |
4093 | } | |
4094 | ||
4095 | s->ct_validation_callback = callback; | |
4096 | s->ct_validation_callback_arg = arg; | |
4097 | ||
4098 | return 1; | |
4099 | } | |
4100 | ||
4101 | int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, | |
4102 | ssl_ct_validation_cb callback, void *arg) | |
4103 | { | |
4104 | /* | |
4105 | * Since code exists that uses the custom extension handler for CT, look for | |
4106 | * this and throw an error if they have already registered to use CT. | |
4107 | */ | |
4108 | if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx, | |
4109 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4110 | { | |
4111 | SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK, | |
4112 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4113 | return 0; | |
4114 | } | |
4115 | ||
4116 | ctx->ct_validation_callback = callback; | |
4117 | ctx->ct_validation_callback_arg = arg; | |
4118 | return 1; | |
4119 | } | |
4120 | ||
4121 | int SSL_ct_is_enabled(const SSL *s) | |
4122 | { | |
4123 | return s->ct_validation_callback != NULL; | |
4124 | } | |
4125 | ||
4126 | int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx) | |
4127 | { | |
4128 | return ctx->ct_validation_callback != NULL; | |
4129 | } | |
4130 | ||
4131 | int ssl_validate_ct(SSL *s) | |
4132 | { | |
4133 | int ret = 0; | |
4134 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4135 | X509 *issuer; | |
4136 | SSL_DANE *dane = &s->dane; | |
4137 | CT_POLICY_EVAL_CTX *ctx = NULL; | |
4138 | const STACK_OF(SCT) *scts; | |
4139 | ||
4140 | /* | |
4141 | * If no callback is set, the peer is anonymous, or its chain is invalid, | |
4142 | * skip SCT validation - just return success. Applications that continue | |
4143 | * handshakes without certificates, with unverified chains, or pinned leaf | |
4144 | * certificates are outside the scope of the WebPKI and CT. | |
4145 | * | |
4146 | * The above exclusions notwithstanding the vast majority of peers will | |
4147 | * have rather ordinary certificate chains validated by typical | |
4148 | * applications that perform certificate verification and therefore will | |
4149 | * process SCTs when enabled. | |
4150 | */ | |
4151 | if (s->ct_validation_callback == NULL || cert == NULL || | |
4152 | s->verify_result != X509_V_OK || | |
4153 | s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1) | |
4154 | return 1; | |
4155 | ||
4156 | /* | |
4157 | * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3) | |
4158 | * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2 | |
4159 | */ | |
4160 | if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) { | |
4161 | switch (dane->mtlsa->usage) { | |
4162 | case DANETLS_USAGE_DANE_TA: | |
4163 | case DANETLS_USAGE_DANE_EE: | |
4164 | return 1; | |
4165 | } | |
4166 | } | |
4167 | ||
4168 | ctx = CT_POLICY_EVAL_CTX_new(); | |
4169 | if (ctx == NULL) { | |
4170 | SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE); | |
4171 | goto end; | |
4172 | } | |
4173 | ||
4174 | issuer = sk_X509_value(s->verified_chain, 1); | |
4175 | CT_POLICY_EVAL_CTX_set1_cert(ctx, cert); | |
4176 | CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer); | |
4177 | CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store); | |
4178 | ||
4179 | scts = SSL_get0_peer_scts(s); | |
4180 | ||
4181 | /* | |
4182 | * This function returns success (> 0) only when all the SCTs are valid, 0 | |
4183 | * when some are invalid, and < 0 on various internal errors (out of | |
4184 | * memory, etc.). Having some, or even all, invalid SCTs is not sufficient | |
4185 | * reason to abort the handshake, that decision is up to the callback. | |
4186 | * Therefore, we error out only in the unexpected case that the return | |
4187 | * value is negative. | |
4188 | * | |
4189 | * XXX: One might well argue that the return value of this function is an | |
4190 | * unfortunate design choice. Its job is only to determine the validation | |
4191 | * status of each of the provided SCTs. So long as it correctly separates | |
4192 | * the wheat from the chaff it should return success. Failure in this case | |
4193 | * ought to correspond to an inability to carry out its duties. | |
4194 | */ | |
4195 | if (SCT_LIST_validate(scts, ctx) < 0) { | |
4196 | SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED); | |
4197 | goto end; | |
4198 | } | |
4199 | ||
4200 | ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg); | |
4201 | if (ret < 0) | |
4202 | ret = 0; /* This function returns 0 on failure */ | |
4203 | ||
4204 | end: | |
4205 | CT_POLICY_EVAL_CTX_free(ctx); | |
4206 | /* | |
4207 | * With SSL_VERIFY_NONE the session may be cached and re-used despite a | |
4208 | * failure return code here. Also the application may wish the complete | |
4209 | * the handshake, and then disconnect cleanly at a higher layer, after | |
4210 | * checking the verification status of the completed connection. | |
4211 | * | |
4212 | * We therefore force a certificate verification failure which will be | |
4213 | * visible via SSL_get_verify_result() and cached as part of any resumed | |
4214 | * session. | |
4215 | * | |
4216 | * Note: the permissive callback is for information gathering only, always | |
4217 | * returns success, and does not affect verification status. Only the | |
4218 | * strict callback or a custom application-specified callback can trigger | |
4219 | * connection failure or record a verification error. | |
4220 | */ | |
4221 | if (ret <= 0) | |
4222 | s->verify_result = X509_V_ERR_NO_VALID_SCTS; | |
4223 | return ret; | |
4224 | } | |
4225 | ||
4226 | int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode) | |
4227 | { | |
4228 | switch (validation_mode) { | |
4229 | default: | |
4230 | SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4231 | return 0; | |
4232 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4233 | return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL); | |
4234 | case SSL_CT_VALIDATION_STRICT: | |
4235 | return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL); | |
4236 | } | |
4237 | } | |
4238 | ||
4239 | int SSL_enable_ct(SSL *s, int validation_mode) | |
4240 | { | |
4241 | switch (validation_mode) { | |
4242 | default: | |
4243 | SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4244 | return 0; | |
4245 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4246 | return SSL_set_ct_validation_callback(s, ct_permissive, NULL); | |
4247 | case SSL_CT_VALIDATION_STRICT: | |
4248 | return SSL_set_ct_validation_callback(s, ct_strict, NULL); | |
4249 | } | |
4250 | } | |
4251 | ||
4252 | int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx) | |
4253 | { | |
4254 | return CTLOG_STORE_load_default_file(ctx->ctlog_store); | |
4255 | } | |
4256 | ||
4257 | int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path) | |
4258 | { | |
4259 | return CTLOG_STORE_load_file(ctx->ctlog_store, path); | |
4260 | } | |
4261 | ||
4262 | void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs) | |
4263 | { | |
4264 | CTLOG_STORE_free(ctx->ctlog_store); | |
4265 | ctx->ctlog_store = logs; | |
4266 | } | |
4267 | ||
4268 | const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx) | |
4269 | { | |
4270 | return ctx->ctlog_store; | |
4271 | } | |
4272 | ||
4273 | #endif |