1 /*
2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
3 */
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * All rights reserved.
6 *
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
10 *
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 *
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
24 *
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
27 * are met:
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 *
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 *
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
59 */
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
62 *
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
65 * are met:
66 *
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
69 *
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
73 * distribution.
74 *
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
79 *
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
84 *
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
88 *
89 * 6. Redistributions of any form whatsoever must retain the following
90 * acknowledgment:
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
93 *
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
107 *
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
111 *
112 */
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
117 */
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
120 *
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * license.
124 *
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
128 *
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
132 *
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
137 *
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
142 * OTHERWISE.
143 */
144
145 #ifdef REF_CHECK
146 # include <assert.h>
147 #endif
148 #include <stdio.h>
149 #include "ssl_locl.h"
150 #include "kssl_lcl.h"
151 #include <openssl/objects.h>
152 #include <openssl/lhash.h>
153 #include <openssl/x509v3.h>
154 #include <openssl/rand.h>
155 #include <openssl/ocsp.h>
156 #ifndef OPENSSL_NO_DH
157 # include <openssl/dh.h>
158 #endif
159 #ifndef OPENSSL_NO_ENGINE
160 # include <openssl/engine.h>
161 #endif
162
163 const char *SSL_version_str = OPENSSL_VERSION_TEXT;
164
165 SSL3_ENC_METHOD ssl3_undef_enc_method = {
166 /*
167 * evil casts, but these functions are only called if there's a library
168 * bug
169 */
170 (int (*)(SSL *, int))ssl_undefined_function,
171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
172 ssl_undefined_function,
173 (int (*)(SSL *, unsigned char *, unsigned char *, int))
174 ssl_undefined_function,
175 (int (*)(SSL *, int))ssl_undefined_function,
176 (int (*)(SSL *, const char *, int, unsigned char *))
177 ssl_undefined_function,
178 0, /* finish_mac_length */
179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
180 NULL, /* client_finished_label */
181 0, /* client_finished_label_len */
182 NULL, /* server_finished_label */
183 0, /* server_finished_label_len */
184 (int (*)(int))ssl_undefined_function,
185 (int (*)(SSL *, unsigned char *, size_t, const char *,
186 size_t, const unsigned char *, size_t,
187 int use_context))ssl_undefined_function,
188 };
189
SSL_clear(SSL * s)190 int SSL_clear(SSL *s)
191 {
192
193 if (s->method == NULL) {
194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
195 return (0);
196 }
197
198 if (ssl_clear_bad_session(s)) {
199 SSL_SESSION_free(s->session);
200 s->session = NULL;
201 }
202
203 s->error = 0;
204 s->hit = 0;
205 s->shutdown = 0;
206
207 #if 0
208 /*
209 * Disabled since version 1.10 of this file (early return not
210 * needed because SSL_clear is not called when doing renegotiation)
211 */
212 /*
213 * This is set if we are doing dynamic renegotiation so keep
214 * the old cipher. It is sort of a SSL_clear_lite :-)
215 */
216 if (s->renegotiate)
217 return (1);
218 #else
219 if (s->renegotiate) {
220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
221 return 0;
222 }
223 #endif
224
225 s->type = 0;
226
227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
228
229 s->version = s->method->version;
230 s->client_version = s->version;
231 s->rwstate = SSL_NOTHING;
232 s->rstate = SSL_ST_READ_HEADER;
233 #if 0
234 s->read_ahead = s->ctx->read_ahead;
235 #endif
236
237 if (s->init_buf != NULL) {
238 BUF_MEM_free(s->init_buf);
239 s->init_buf = NULL;
240 }
241
242 ssl_clear_cipher_ctx(s);
243 ssl_clear_hash_ctx(&s->read_hash);
244 ssl_clear_hash_ctx(&s->write_hash);
245
246 s->first_packet = 0;
247
248 #if 1
249 /*
250 * Check to see if we were changed into a different method, if so, revert
251 * back if we are not doing session-id reuse.
252 */
253 if (!s->in_handshake && (s->session == NULL)
254 && (s->method != s->ctx->method)) {
255 s->method->ssl_free(s);
256 s->method = s->ctx->method;
257 if (!s->method->ssl_new(s))
258 return (0);
259 } else
260 #endif
261 s->method->ssl_clear(s);
262 return (1);
263 }
264
265 /** Used to change an SSL_CTXs default SSL method type */
SSL_CTX_set_ssl_version(SSL_CTX * ctx,const SSL_METHOD * meth)266 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
267 {
268 STACK_OF(SSL_CIPHER) *sk;
269
270 ctx->method = meth;
271
272 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
273 &(ctx->cipher_list_by_id),
274 meth->version ==
275 SSL2_VERSION ? "SSLv2" :
276 SSL_DEFAULT_CIPHER_LIST);
277 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
278 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
279 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
280 return (0);
281 }
282 return (1);
283 }
284
SSL_new(SSL_CTX * ctx)285 SSL *SSL_new(SSL_CTX *ctx)
286 {
287 SSL *s;
288
289 if (ctx == NULL) {
290 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
291 return (NULL);
292 }
293 if (ctx->method == NULL) {
294 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
295 return (NULL);
296 }
297
298 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
299 if (s == NULL)
300 goto err;
301 memset(s, 0, sizeof(SSL));
302
303 #ifndef OPENSSL_NO_KRB5
304 s->kssl_ctx = kssl_ctx_new();
305 #endif /* OPENSSL_NO_KRB5 */
306
307 s->options = ctx->options;
308 s->mode = ctx->mode;
309 s->max_cert_list = ctx->max_cert_list;
310
311 if (ctx->cert != NULL) {
312 /*
313 * Earlier library versions used to copy the pointer to the CERT, not
314 * its contents; only when setting new parameters for the per-SSL
315 * copy, ssl_cert_new would be called (and the direct reference to
316 * the per-SSL_CTX settings would be lost, but those still were
317 * indirectly accessed for various purposes, and for that reason they
318 * used to be known as s->ctx->default_cert). Now we don't look at the
319 * SSL_CTX's CERT after having duplicated it once.
320 */
321
322 s->cert = ssl_cert_dup(ctx->cert);
323 if (s->cert == NULL)
324 goto err;
325 } else
326 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
327
328 s->read_ahead = ctx->read_ahead;
329 s->msg_callback = ctx->msg_callback;
330 s->msg_callback_arg = ctx->msg_callback_arg;
331 s->verify_mode = ctx->verify_mode;
332 #if 0
333 s->verify_depth = ctx->verify_depth;
334 #endif
335 s->sid_ctx_length = ctx->sid_ctx_length;
336 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
337 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
338 s->verify_callback = ctx->default_verify_callback;
339 s->generate_session_id = ctx->generate_session_id;
340
341 s->param = X509_VERIFY_PARAM_new();
342 if (!s->param)
343 goto err;
344 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
345 #if 0
346 s->purpose = ctx->purpose;
347 s->trust = ctx->trust;
348 #endif
349 s->quiet_shutdown = ctx->quiet_shutdown;
350 s->max_send_fragment = ctx->max_send_fragment;
351
352 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
353 s->ctx = ctx;
354 #ifndef OPENSSL_NO_TLSEXT
355 s->tlsext_debug_cb = 0;
356 s->tlsext_debug_arg = NULL;
357 s->tlsext_ticket_expected = 0;
358 s->tlsext_status_type = -1;
359 s->tlsext_status_expected = 0;
360 s->tlsext_ocsp_ids = NULL;
361 s->tlsext_ocsp_exts = NULL;
362 s->tlsext_ocsp_resp = NULL;
363 s->tlsext_ocsp_resplen = -1;
364 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
365 s->initial_ctx = ctx;
366 # ifndef OPENSSL_NO_NEXTPROTONEG
367 s->next_proto_negotiated = NULL;
368 # endif
369 #endif
370
371 s->verify_result = X509_V_OK;
372
373 s->method = ctx->method;
374
375 if (!s->method->ssl_new(s))
376 goto err;
377
378 s->references = 1;
379 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
380
381 SSL_clear(s);
382
383 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
384
385 #ifndef OPENSSL_NO_PSK
386 s->psk_client_callback = ctx->psk_client_callback;
387 s->psk_server_callback = ctx->psk_server_callback;
388 #endif
389
390 return (s);
391 err:
392 if (s != NULL)
393 SSL_free(s);
394 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
395 return (NULL);
396 }
397
SSL_CTX_set_session_id_context(SSL_CTX * ctx,const unsigned char * sid_ctx,unsigned int sid_ctx_len)398 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
399 unsigned int sid_ctx_len)
400 {
401 if (sid_ctx_len > sizeof ctx->sid_ctx) {
402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
403 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
404 return 0;
405 }
406 ctx->sid_ctx_length = sid_ctx_len;
407 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
408
409 return 1;
410 }
411
SSL_set_session_id_context(SSL * ssl,const unsigned char * sid_ctx,unsigned int sid_ctx_len)412 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
413 unsigned int sid_ctx_len)
414 {
415 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
417 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
418 return 0;
419 }
420 ssl->sid_ctx_length = sid_ctx_len;
421 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
422
423 return 1;
424 }
425
SSL_CTX_set_generate_session_id(SSL_CTX * ctx,GEN_SESSION_CB cb)426 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
427 {
428 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
429 ctx->generate_session_id = cb;
430 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
431 return 1;
432 }
433
SSL_set_generate_session_id(SSL * ssl,GEN_SESSION_CB cb)434 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
435 {
436 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
437 ssl->generate_session_id = cb;
438 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
439 return 1;
440 }
441
SSL_has_matching_session_id(const SSL * ssl,const unsigned char * id,unsigned int id_len)442 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
443 unsigned int id_len)
444 {
445 /*
446 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
447 * we can "construct" a session to give us the desired check - ie. to
448 * find if there's a session in the hash table that would conflict with
449 * any new session built out of this id/id_len and the ssl_version in use
450 * by this SSL.
451 */
452 SSL_SESSION r, *p;
453
454 if (id_len > sizeof r.session_id)
455 return 0;
456
457 r.ssl_version = ssl->version;
458 r.session_id_length = id_len;
459 memcpy(r.session_id, id, id_len);
460 /*
461 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
462 * callback is calling us to check the uniqueness of a shorter ID, it
463 * must be compared as a padded-out ID because that is what it will be
464 * converted to when the callback has finished choosing it.
465 */
466 if ((r.ssl_version == SSL2_VERSION) &&
467 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) {
468 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len);
469 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
470 }
471
472 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
473 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
474 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
475 return (p != NULL);
476 }
477
SSL_CTX_set_purpose(SSL_CTX * s,int purpose)478 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
479 {
480 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
481 }
482
SSL_set_purpose(SSL * s,int purpose)483 int SSL_set_purpose(SSL *s, int purpose)
484 {
485 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
486 }
487
SSL_CTX_set_trust(SSL_CTX * s,int trust)488 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
489 {
490 return X509_VERIFY_PARAM_set_trust(s->param, trust);
491 }
492
SSL_set_trust(SSL * s,int trust)493 int SSL_set_trust(SSL *s, int trust)
494 {
495 return X509_VERIFY_PARAM_set_trust(s->param, trust);
496 }
497
SSL_CTX_set1_param(SSL_CTX * ctx,X509_VERIFY_PARAM * vpm)498 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
499 {
500 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
501 }
502
SSL_set1_param(SSL * ssl,X509_VERIFY_PARAM * vpm)503 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
504 {
505 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
506 }
507
SSL_free(SSL * s)508 void SSL_free(SSL *s)
509 {
510 int i;
511
512 if (s == NULL)
513 return;
514
515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
516 #ifdef REF_PRINT
517 REF_PRINT("SSL", s);
518 #endif
519 if (i > 0)
520 return;
521 #ifdef REF_CHECK
522 if (i < 0) {
523 fprintf(stderr, "SSL_free, bad reference count\n");
524 abort(); /* ok */
525 }
526 #endif
527
528 if (s->param)
529 X509_VERIFY_PARAM_free(s->param);
530
531 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
532
533 if (s->bbio != NULL) {
534 /* If the buffering BIO is in place, pop it off */
535 if (s->bbio == s->wbio) {
536 s->wbio = BIO_pop(s->wbio);
537 }
538 BIO_free(s->bbio);
539 s->bbio = NULL;
540 }
541 if (s->rbio != NULL)
542 BIO_free_all(s->rbio);
543 if ((s->wbio != NULL) && (s->wbio != s->rbio))
544 BIO_free_all(s->wbio);
545
546 if (s->init_buf != NULL)
547 BUF_MEM_free(s->init_buf);
548
549 /* add extra stuff */
550 if (s->cipher_list != NULL)
551 sk_SSL_CIPHER_free(s->cipher_list);
552 if (s->cipher_list_by_id != NULL)
553 sk_SSL_CIPHER_free(s->cipher_list_by_id);
554
555 /* Make the next call work :-) */
556 if (s->session != NULL) {
557 ssl_clear_bad_session(s);
558 SSL_SESSION_free(s->session);
559 }
560
561 ssl_clear_cipher_ctx(s);
562 ssl_clear_hash_ctx(&s->read_hash);
563 ssl_clear_hash_ctx(&s->write_hash);
564
565 if (s->cert != NULL)
566 ssl_cert_free(s->cert);
567 /* Free up if allocated */
568
569 #ifndef OPENSSL_NO_TLSEXT
570 if (s->tlsext_hostname)
571 OPENSSL_free(s->tlsext_hostname);
572 if (s->initial_ctx)
573 SSL_CTX_free(s->initial_ctx);
574 # ifndef OPENSSL_NO_EC
575 if (s->tlsext_ecpointformatlist)
576 OPENSSL_free(s->tlsext_ecpointformatlist);
577 if (s->tlsext_ellipticcurvelist)
578 OPENSSL_free(s->tlsext_ellipticcurvelist);
579 # endif /* OPENSSL_NO_EC */
580 if (s->tlsext_opaque_prf_input)
581 OPENSSL_free(s->tlsext_opaque_prf_input);
582 if (s->tlsext_ocsp_exts)
583 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
584 if (s->tlsext_ocsp_ids)
585 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
586 if (s->tlsext_ocsp_resp)
587 OPENSSL_free(s->tlsext_ocsp_resp);
588 #endif
589
590 if (s->client_CA != NULL)
591 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
592
593 if (s->method != NULL)
594 s->method->ssl_free(s);
595
596 if (s->ctx)
597 SSL_CTX_free(s->ctx);
598
599 #ifndef OPENSSL_NO_KRB5
600 if (s->kssl_ctx != NULL)
601 kssl_ctx_free(s->kssl_ctx);
602 #endif /* OPENSSL_NO_KRB5 */
603
604 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
605 if (s->next_proto_negotiated)
606 OPENSSL_free(s->next_proto_negotiated);
607 #endif
608
609 #ifndef OPENSSL_NO_SRTP
610 if (s->srtp_profiles)
611 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
612 #endif
613
614 OPENSSL_free(s);
615 }
616
SSL_set_bio(SSL * s,BIO * rbio,BIO * wbio)617 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
618 {
619 /*
620 * If the output buffering BIO is still in place, remove it
621 */
622 if (s->bbio != NULL) {
623 if (s->wbio == s->bbio) {
624 s->wbio = s->wbio->next_bio;
625 s->bbio->next_bio = NULL;
626 }
627 }
628 if ((s->rbio != NULL) && (s->rbio != rbio))
629 BIO_free_all(s->rbio);
630 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
631 BIO_free_all(s->wbio);
632 s->rbio = rbio;
633 s->wbio = wbio;
634 }
635
SSL_get_rbio(const SSL * s)636 BIO *SSL_get_rbio(const SSL *s)
637 {
638 return (s->rbio);
639 }
640
SSL_get_wbio(const SSL * s)641 BIO *SSL_get_wbio(const SSL *s)
642 {
643 return (s->wbio);
644 }
645
SSL_get_fd(const SSL * s)646 int SSL_get_fd(const SSL *s)
647 {
648 return (SSL_get_rfd(s));
649 }
650
SSL_get_rfd(const SSL * s)651 int SSL_get_rfd(const SSL *s)
652 {
653 int ret = -1;
654 BIO *b, *r;
655
656 b = SSL_get_rbio(s);
657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
658 if (r != NULL)
659 BIO_get_fd(r, &ret);
660 return (ret);
661 }
662
SSL_get_wfd(const SSL * s)663 int SSL_get_wfd(const SSL *s)
664 {
665 int ret = -1;
666 BIO *b, *r;
667
668 b = SSL_get_wbio(s);
669 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
670 if (r != NULL)
671 BIO_get_fd(r, &ret);
672 return (ret);
673 }
674
675 #ifndef OPENSSL_NO_SOCK
SSL_set_fd(SSL * s,int fd)676 int SSL_set_fd(SSL *s, int fd)
677 {
678 int ret = 0;
679 BIO *bio = NULL;
680
681 bio = BIO_new(BIO_s_socket());
682
683 if (bio == NULL) {
684 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
685 goto err;
686 }
687 BIO_set_fd(bio, fd, BIO_NOCLOSE);
688 SSL_set_bio(s, bio, bio);
689 ret = 1;
690 err:
691 return (ret);
692 }
693
SSL_set_wfd(SSL * s,int fd)694 int SSL_set_wfd(SSL *s, int fd)
695 {
696 int ret = 0;
697 BIO *bio = NULL;
698
699 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
700 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
701 bio = BIO_new(BIO_s_socket());
702
703 if (bio == NULL) {
704 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
705 goto err;
706 }
707 BIO_set_fd(bio, fd, BIO_NOCLOSE);
708 SSL_set_bio(s, SSL_get_rbio(s), bio);
709 } else
710 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
711 ret = 1;
712 err:
713 return (ret);
714 }
715
SSL_set_rfd(SSL * s,int fd)716 int SSL_set_rfd(SSL *s, int fd)
717 {
718 int ret = 0;
719 BIO *bio = NULL;
720
721 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
722 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
723 bio = BIO_new(BIO_s_socket());
724
725 if (bio == NULL) {
726 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
727 goto err;
728 }
729 BIO_set_fd(bio, fd, BIO_NOCLOSE);
730 SSL_set_bio(s, bio, SSL_get_wbio(s));
731 } else
732 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
733 ret = 1;
734 err:
735 return (ret);
736 }
737 #endif
738
739 /* return length of latest Finished message we sent, copy to 'buf' */
SSL_get_finished(const SSL * s,void * buf,size_t count)740 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
741 {
742 size_t ret = 0;
743
744 if (s->s3 != NULL) {
745 ret = s->s3->tmp.finish_md_len;
746 if (count > ret)
747 count = ret;
748 memcpy(buf, s->s3->tmp.finish_md, count);
749 }
750 return ret;
751 }
752
753 /* return length of latest Finished message we expected, copy to 'buf' */
SSL_get_peer_finished(const SSL * s,void * buf,size_t count)754 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
755 {
756 size_t ret = 0;
757
758 if (s->s3 != NULL) {
759 ret = s->s3->tmp.peer_finish_md_len;
760 if (count > ret)
761 count = ret;
762 memcpy(buf, s->s3->tmp.peer_finish_md, count);
763 }
764 return ret;
765 }
766
SSL_get_verify_mode(const SSL * s)767 int SSL_get_verify_mode(const SSL *s)
768 {
769 return (s->verify_mode);
770 }
771
SSL_get_verify_depth(const SSL * s)772 int SSL_get_verify_depth(const SSL *s)
773 {
774 return X509_VERIFY_PARAM_get_depth(s->param);
775 }
776
SSL_get_verify_callback(const SSL * s)777 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
778 return (s->verify_callback);
779 }
780
SSL_CTX_get_verify_mode(const SSL_CTX * ctx)781 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
782 {
783 return (ctx->verify_mode);
784 }
785
SSL_CTX_get_verify_depth(const SSL_CTX * ctx)786 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
787 {
788 return X509_VERIFY_PARAM_get_depth(ctx->param);
789 }
790
SSL_CTX_get_verify_callback(const SSL_CTX * ctx)791 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
792 return (ctx->default_verify_callback);
793 }
794
SSL_set_verify(SSL * s,int mode,int (* callback)(int ok,X509_STORE_CTX * ctx))795 void SSL_set_verify(SSL *s, int mode,
796 int (*callback) (int ok, X509_STORE_CTX *ctx))
797 {
798 s->verify_mode = mode;
799 if (callback != NULL)
800 s->verify_callback = callback;
801 }
802
SSL_set_verify_depth(SSL * s,int depth)803 void SSL_set_verify_depth(SSL *s, int depth)
804 {
805 X509_VERIFY_PARAM_set_depth(s->param, depth);
806 }
807
SSL_set_read_ahead(SSL * s,int yes)808 void SSL_set_read_ahead(SSL *s, int yes)
809 {
810 s->read_ahead = yes;
811 }
812
SSL_get_read_ahead(const SSL * s)813 int SSL_get_read_ahead(const SSL *s)
814 {
815 return (s->read_ahead);
816 }
817
SSL_pending(const SSL * s)818 int SSL_pending(const SSL *s)
819 {
820 /*
821 * SSL_pending cannot work properly if read-ahead is enabled
822 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
823 * impossible to fix since SSL_pending cannot report errors that may be
824 * observed while scanning the new data. (Note that SSL_pending() is
825 * often used as a boolean value, so we'd better not return -1.)
826 */
827 return (s->method->ssl_pending(s));
828 }
829
SSL_get_peer_certificate(const SSL * s)830 X509 *SSL_get_peer_certificate(const SSL *s)
831 {
832 X509 *r;
833
834 if ((s == NULL) || (s->session == NULL))
835 r = NULL;
836 else
837 r = s->session->peer;
838
839 if (r == NULL)
840 return (r);
841
842 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
843
844 return (r);
845 }
846
STACK_OF(X509)847 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
848 {
849 STACK_OF(X509) *r;
850
851 if ((s == NULL) || (s->session == NULL)
852 || (s->session->sess_cert == NULL))
853 r = NULL;
854 else
855 r = s->session->sess_cert->cert_chain;
856
857 /*
858 * If we are a client, cert_chain includes the peer's own certificate; if
859 * we are a server, it does not.
860 */
861
862 return (r);
863 }
864
865 /*
866 * Now in theory, since the calling process own 't' it should be safe to
867 * modify. We need to be able to read f without being hassled
868 */
SSL_copy_session_id(SSL * t,const SSL * f)869 void SSL_copy_session_id(SSL *t, const SSL *f)
870 {
871 CERT *tmp;
872
873 /* Do we need to to SSL locking? */
874 SSL_set_session(t, SSL_get_session(f));
875
876 /*
877 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
878 */
879 if (t->method != f->method) {
880 t->method->ssl_free(t); /* cleanup current */
881 t->method = f->method; /* change method */
882 t->method->ssl_new(t); /* setup new */
883 }
884
885 tmp = t->cert;
886 if (f->cert != NULL) {
887 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
888 t->cert = f->cert;
889 } else
890 t->cert = NULL;
891 if (tmp != NULL)
892 ssl_cert_free(tmp);
893 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
894 }
895
896 /* Fix this so it checks all the valid key/cert options */
SSL_CTX_check_private_key(const SSL_CTX * ctx)897 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
898 {
899 if ((ctx == NULL) ||
900 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
902 SSL_R_NO_CERTIFICATE_ASSIGNED);
903 return (0);
904 }
905 if (ctx->cert->key->privatekey == NULL) {
906 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
907 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
908 return (0);
909 }
910 return (X509_check_private_key
911 (ctx->cert->key->x509, ctx->cert->key->privatekey));
912 }
913
914 /* Fix this function so that it takes an optional type parameter */
SSL_check_private_key(const SSL * ssl)915 int SSL_check_private_key(const SSL *ssl)
916 {
917 if (ssl == NULL) {
918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
919 return (0);
920 }
921 if (ssl->cert == NULL) {
922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
923 return 0;
924 }
925 if (ssl->cert->key->x509 == NULL) {
926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
927 return (0);
928 }
929 if (ssl->cert->key->privatekey == NULL) {
930 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
931 return (0);
932 }
933 return (X509_check_private_key(ssl->cert->key->x509,
934 ssl->cert->key->privatekey));
935 }
936
SSL_accept(SSL * s)937 int SSL_accept(SSL *s)
938 {
939 if (s->handshake_func == 0)
940 /* Not properly initialized yet */
941 SSL_set_accept_state(s);
942
943 return (s->method->ssl_accept(s));
944 }
945
SSL_connect(SSL * s)946 int SSL_connect(SSL *s)
947 {
948 if (s->handshake_func == 0)
949 /* Not properly initialized yet */
950 SSL_set_connect_state(s);
951
952 return (s->method->ssl_connect(s));
953 }
954
SSL_get_default_timeout(const SSL * s)955 long SSL_get_default_timeout(const SSL *s)
956 {
957 return (s->method->get_timeout());
958 }
959
SSL_read(SSL * s,void * buf,int num)960 int SSL_read(SSL *s, void *buf, int num)
961 {
962 if (s->handshake_func == 0) {
963 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
964 return -1;
965 }
966
967 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
968 s->rwstate = SSL_NOTHING;
969 return (0);
970 }
971 return (s->method->ssl_read(s, buf, num));
972 }
973
SSL_peek(SSL * s,void * buf,int num)974 int SSL_peek(SSL *s, void *buf, int num)
975 {
976 if (s->handshake_func == 0) {
977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
978 return -1;
979 }
980
981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
982 return (0);
983 }
984 return (s->method->ssl_peek(s, buf, num));
985 }
986
SSL_write(SSL * s,const void * buf,int num)987 int SSL_write(SSL *s, const void *buf, int num)
988 {
989 if (s->handshake_func == 0) {
990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
991 return -1;
992 }
993
994 if (s->shutdown & SSL_SENT_SHUTDOWN) {
995 s->rwstate = SSL_NOTHING;
996 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
997 return (-1);
998 }
999 return (s->method->ssl_write(s, buf, num));
1000 }
1001
SSL_shutdown(SSL * s)1002 int SSL_shutdown(SSL *s)
1003 {
1004 /*
1005 * Note that this function behaves differently from what one might
1006 * expect. Return values are 0 for no success (yet), 1 for success; but
1007 * calling it once is usually not enough, even if blocking I/O is used
1008 * (see ssl3_shutdown).
1009 */
1010
1011 if (s->handshake_func == 0) {
1012 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1013 return -1;
1014 }
1015
1016 if ((s != NULL) && !SSL_in_init(s))
1017 return (s->method->ssl_shutdown(s));
1018 else
1019 return (1);
1020 }
1021
SSL_renegotiate(SSL * s)1022 int SSL_renegotiate(SSL *s)
1023 {
1024 if (s->renegotiate == 0)
1025 s->renegotiate = 1;
1026
1027 s->new_session = 1;
1028
1029 return (s->method->ssl_renegotiate(s));
1030 }
1031
SSL_renegotiate_abbreviated(SSL * s)1032 int SSL_renegotiate_abbreviated(SSL *s)
1033 {
1034 if (s->renegotiate == 0)
1035 s->renegotiate = 1;
1036
1037 s->new_session = 0;
1038
1039 return (s->method->ssl_renegotiate(s));
1040 }
1041
SSL_renegotiate_pending(SSL * s)1042 int SSL_renegotiate_pending(SSL *s)
1043 {
1044 /*
1045 * becomes true when negotiation is requested; false again once a
1046 * handshake has finished
1047 */
1048 return (s->renegotiate != 0);
1049 }
1050
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)1051 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1052 {
1053 long l;
1054
1055 switch (cmd) {
1056 case SSL_CTRL_GET_READ_AHEAD:
1057 return (s->read_ahead);
1058 case SSL_CTRL_SET_READ_AHEAD:
1059 l = s->read_ahead;
1060 s->read_ahead = larg;
1061 return (l);
1062
1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1064 s->msg_callback_arg = parg;
1065 return 1;
1066
1067 case SSL_CTRL_OPTIONS:
1068 return (s->options |= larg);
1069 case SSL_CTRL_CLEAR_OPTIONS:
1070 return (s->options &= ~larg);
1071 case SSL_CTRL_MODE:
1072 return (s->mode |= larg);
1073 case SSL_CTRL_CLEAR_MODE:
1074 return (s->mode &= ~larg);
1075 case SSL_CTRL_GET_MAX_CERT_LIST:
1076 return (s->max_cert_list);
1077 case SSL_CTRL_SET_MAX_CERT_LIST:
1078 l = s->max_cert_list;
1079 s->max_cert_list = larg;
1080 return (l);
1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1083 return 0;
1084 s->max_send_fragment = larg;
1085 return 1;
1086 case SSL_CTRL_GET_RI_SUPPORT:
1087 if (s->s3)
1088 return s->s3->send_connection_binding;
1089 else
1090 return 0;
1091 default:
1092 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1093 }
1094 }
1095
SSL_callback_ctrl(SSL * s,int cmd,void (* fp)(void))1096 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1097 {
1098 switch (cmd) {
1099 case SSL_CTRL_SET_MSG_CALLBACK:
1100 s->msg_callback = (void (*)
1101 (int write_p, int version, int content_type,
1102 const void *buf, size_t len, SSL *ssl,
1103 void *arg))(fp);
1104 return 1;
1105
1106 default:
1107 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1108 }
1109 }
1110
LHASH_OF(SSL_SESSION)1111 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1112 {
1113 return ctx->sessions;
1114 }
1115
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)1116 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1117 {
1118 long l;
1119
1120 switch (cmd) {
1121 case SSL_CTRL_GET_READ_AHEAD:
1122 return (ctx->read_ahead);
1123 case SSL_CTRL_SET_READ_AHEAD:
1124 l = ctx->read_ahead;
1125 ctx->read_ahead = larg;
1126 return (l);
1127
1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1129 ctx->msg_callback_arg = parg;
1130 return 1;
1131
1132 case SSL_CTRL_GET_MAX_CERT_LIST:
1133 return (ctx->max_cert_list);
1134 case SSL_CTRL_SET_MAX_CERT_LIST:
1135 l = ctx->max_cert_list;
1136 ctx->max_cert_list = larg;
1137 return (l);
1138
1139 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1140 l = ctx->session_cache_size;
1141 ctx->session_cache_size = larg;
1142 return (l);
1143 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1144 return (ctx->session_cache_size);
1145 case SSL_CTRL_SET_SESS_CACHE_MODE:
1146 l = ctx->session_cache_mode;
1147 ctx->session_cache_mode = larg;
1148 return (l);
1149 case SSL_CTRL_GET_SESS_CACHE_MODE:
1150 return (ctx->session_cache_mode);
1151
1152 case SSL_CTRL_SESS_NUMBER:
1153 return (lh_SSL_SESSION_num_items(ctx->sessions));
1154 case SSL_CTRL_SESS_CONNECT:
1155 return (ctx->stats.sess_connect);
1156 case SSL_CTRL_SESS_CONNECT_GOOD:
1157 return (ctx->stats.sess_connect_good);
1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1159 return (ctx->stats.sess_connect_renegotiate);
1160 case SSL_CTRL_SESS_ACCEPT:
1161 return (ctx->stats.sess_accept);
1162 case SSL_CTRL_SESS_ACCEPT_GOOD:
1163 return (ctx->stats.sess_accept_good);
1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1165 return (ctx->stats.sess_accept_renegotiate);
1166 case SSL_CTRL_SESS_HIT:
1167 return (ctx->stats.sess_hit);
1168 case SSL_CTRL_SESS_CB_HIT:
1169 return (ctx->stats.sess_cb_hit);
1170 case SSL_CTRL_SESS_MISSES:
1171 return (ctx->stats.sess_miss);
1172 case SSL_CTRL_SESS_TIMEOUTS:
1173 return (ctx->stats.sess_timeout);
1174 case SSL_CTRL_SESS_CACHE_FULL:
1175 return (ctx->stats.sess_cache_full);
1176 case SSL_CTRL_OPTIONS:
1177 return (ctx->options |= larg);
1178 case SSL_CTRL_CLEAR_OPTIONS:
1179 return (ctx->options &= ~larg);
1180 case SSL_CTRL_MODE:
1181 return (ctx->mode |= larg);
1182 case SSL_CTRL_CLEAR_MODE:
1183 return (ctx->mode &= ~larg);
1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1186 return 0;
1187 ctx->max_send_fragment = larg;
1188 return 1;
1189 default:
1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1191 }
1192 }
1193
SSL_CTX_callback_ctrl(SSL_CTX * ctx,int cmd,void (* fp)(void))1194 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1195 {
1196 switch (cmd) {
1197 case SSL_CTRL_SET_MSG_CALLBACK:
1198 ctx->msg_callback = (void (*)
1199 (int write_p, int version, int content_type,
1200 const void *buf, size_t len, SSL *ssl,
1201 void *arg))(fp);
1202 return 1;
1203
1204 default:
1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1206 }
1207 }
1208
ssl_cipher_id_cmp(const SSL_CIPHER * a,const SSL_CIPHER * b)1209 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1210 {
1211 long l;
1212
1213 l = a->id - b->id;
1214 if (l == 0L)
1215 return (0);
1216 else
1217 return ((l > 0) ? 1 : -1);
1218 }
1219
ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const * ap,const SSL_CIPHER * const * bp)1220 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1221 const SSL_CIPHER *const *bp)
1222 {
1223 long l;
1224
1225 l = (*ap)->id - (*bp)->id;
1226 if (l == 0L)
1227 return (0);
1228 else
1229 return ((l > 0) ? 1 : -1);
1230 }
1231
1232 /** return a STACK of the ciphers available for the SSL and in order of
1233 * preference */
STACK_OF(SSL_CIPHER)1234 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1235 {
1236 if (s != NULL) {
1237 if (s->cipher_list != NULL) {
1238 return (s->cipher_list);
1239 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1240 return (s->ctx->cipher_list);
1241 }
1242 }
1243 return (NULL);
1244 }
1245
1246 /** return a STACK of the ciphers available for the SSL and in order of
1247 * algorithm id */
STACK_OF(SSL_CIPHER)1248 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1249 {
1250 if (s != NULL) {
1251 if (s->cipher_list_by_id != NULL) {
1252 return (s->cipher_list_by_id);
1253 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1254 return (s->ctx->cipher_list_by_id);
1255 }
1256 }
1257 return (NULL);
1258 }
1259
1260 /** The old interface to get the same thing as SSL_get_ciphers() */
SSL_get_cipher_list(const SSL * s,int n)1261 const char *SSL_get_cipher_list(const SSL *s, int n)
1262 {
1263 SSL_CIPHER *c;
1264 STACK_OF(SSL_CIPHER) *sk;
1265
1266 if (s == NULL)
1267 return (NULL);
1268 sk = SSL_get_ciphers(s);
1269 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1270 return (NULL);
1271 c = sk_SSL_CIPHER_value(sk, n);
1272 if (c == NULL)
1273 return (NULL);
1274 return (c->name);
1275 }
1276
1277 /** specify the ciphers to be used by default by the SSL_CTX */
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)1278 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1279 {
1280 STACK_OF(SSL_CIPHER) *sk;
1281
1282 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1283 &ctx->cipher_list_by_id, str);
1284 /*
1285 * ssl_create_cipher_list may return an empty stack if it was unable to
1286 * find a cipher matching the given rule string (for example if the rule
1287 * string specifies a cipher which has been disabled). This is not an
1288 * error as far as ssl_create_cipher_list is concerned, and hence
1289 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1290 */
1291 if (sk == NULL)
1292 return 0;
1293 else if (sk_SSL_CIPHER_num(sk) == 0) {
1294 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1295 return 0;
1296 }
1297 return 1;
1298 }
1299
1300 /** specify the ciphers to be used by the SSL */
SSL_set_cipher_list(SSL * s,const char * str)1301 int SSL_set_cipher_list(SSL *s, const char *str)
1302 {
1303 STACK_OF(SSL_CIPHER) *sk;
1304
1305 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1306 &s->cipher_list_by_id, str);
1307 /* see comment in SSL_CTX_set_cipher_list */
1308 if (sk == NULL)
1309 return 0;
1310 else if (sk_SSL_CIPHER_num(sk) == 0) {
1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1312 return 0;
1313 }
1314 return 1;
1315 }
1316
1317 /* works well for SSLv2, not so good for SSLv3 */
SSL_get_shared_ciphers(const SSL * s,char * buf,int len)1318 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1319 {
1320 char *p;
1321 STACK_OF(SSL_CIPHER) *sk;
1322 SSL_CIPHER *c;
1323 int i;
1324
1325 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1326 return (NULL);
1327
1328 p = buf;
1329 sk = s->session->ciphers;
1330
1331 if (sk_SSL_CIPHER_num(sk) == 0)
1332 return NULL;
1333
1334 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1335 int n;
1336
1337 c = sk_SSL_CIPHER_value(sk, i);
1338 n = strlen(c->name);
1339 if (n + 1 > len) {
1340 if (p != buf)
1341 --p;
1342 *p = '\0';
1343 return buf;
1344 }
1345 strcpy(p, c->name);
1346 p += n;
1347 *(p++) = ':';
1348 len -= n + 1;
1349 }
1350 p[-1] = '\0';
1351 return (buf);
1352 }
1353
ssl_cipher_list_to_bytes(SSL * s,STACK_OF (SSL_CIPHER)* sk,unsigned char * p,int (* put_cb)(const SSL_CIPHER *,unsigned char *))1354 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1355 unsigned char *p,
1356 int (*put_cb) (const SSL_CIPHER *,
1357 unsigned char *))
1358 {
1359 int i, j = 0;
1360 SSL_CIPHER *c;
1361 unsigned char *q;
1362 #ifndef OPENSSL_NO_KRB5
1363 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1364 #endif /* OPENSSL_NO_KRB5 */
1365
1366 if (sk == NULL)
1367 return (0);
1368 q = p;
1369 if (put_cb == NULL)
1370 put_cb = s->method->put_cipher_by_char;
1371
1372 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1373 c = sk_SSL_CIPHER_value(sk, i);
1374 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1375 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1376 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1377 continue;
1378 #ifndef OPENSSL_NO_KRB5
1379 if (((c->algorithm_mkey & SSL_kKRB5)
1380 || (c->algorithm_auth & SSL_aKRB5)) && nokrb5)
1381 continue;
1382 #endif /* OPENSSL_NO_KRB5 */
1383 #ifndef OPENSSL_NO_PSK
1384 /* with PSK there must be client callback set */
1385 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK))
1386 && s->psk_client_callback == NULL)
1387 continue;
1388 #endif /* OPENSSL_NO_PSK */
1389 #ifndef OPENSSL_NO_SRP
1390 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP))
1391 && !(s->srp_ctx.srp_Mask & SSL_kSRP))
1392 continue;
1393 #endif /* OPENSSL_NO_SRP */
1394 j = put_cb(c, p);
1395 p += j;
1396 }
1397 /*
1398 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1399 * applicable SCSVs.
1400 */
1401 if (p != q) {
1402 if (!s->renegotiate) {
1403 static SSL_CIPHER scsv = {
1404 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1405 };
1406 j = put_cb(&scsv, p);
1407 p += j;
1408 #ifdef OPENSSL_RI_DEBUG
1409 fprintf(stderr,
1410 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1411 #endif
1412 }
1413
1414 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1415 static SSL_CIPHER scsv = {
1416 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1417 };
1418 j = put_cb(&scsv, p);
1419 p += j;
1420 }
1421 }
1422
1423 return (p - q);
1424 }
1425
STACK_OF(SSL_CIPHER)1426 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1427 int num,
1428 STACK_OF(SSL_CIPHER) **skp)
1429 {
1430 const SSL_CIPHER *c;
1431 STACK_OF(SSL_CIPHER) *sk;
1432 int i, n;
1433
1434 if (s->s3)
1435 s->s3->send_connection_binding = 0;
1436
1437 n = ssl_put_cipher_by_char(s, NULL, NULL);
1438 if (n == 0 || (num % n) != 0) {
1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1440 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1441 return (NULL);
1442 }
1443 if ((skp == NULL) || (*skp == NULL)) {
1444 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1445 if(sk == NULL) {
1446 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1447 return NULL;
1448 }
1449 } else {
1450 sk = *skp;
1451 sk_SSL_CIPHER_zero(sk);
1452 }
1453
1454 for (i = 0; i < num; i += n) {
1455 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1456 if (s->s3 && (n != 3 || !p[0]) &&
1457 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1458 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1459 /* SCSV fatal if renegotiating */
1460 if (s->renegotiate) {
1461 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1462 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1463 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1464 goto err;
1465 }
1466 s->s3->send_connection_binding = 1;
1467 p += n;
1468 #ifdef OPENSSL_RI_DEBUG
1469 fprintf(stderr, "SCSV received by server\n");
1470 #endif
1471 continue;
1472 }
1473
1474 /* Check for TLS_FALLBACK_SCSV */
1475 if ((n != 3 || !p[0]) &&
1476 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1477 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1478 /*
1479 * The SCSV indicates that the client previously tried a higher
1480 * version. Fail if the current version is an unexpected
1481 * downgrade.
1482 */
1483 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1484 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1485 SSL_R_INAPPROPRIATE_FALLBACK);
1486 if (s->s3)
1487 ssl3_send_alert(s, SSL3_AL_FATAL,
1488 SSL_AD_INAPPROPRIATE_FALLBACK);
1489 goto err;
1490 }
1491 p += n;
1492 continue;
1493 }
1494
1495 c = ssl_get_cipher_by_char(s, p);
1496 p += n;
1497 if (c != NULL) {
1498 if (!sk_SSL_CIPHER_push(sk, c)) {
1499 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1500 goto err;
1501 }
1502 }
1503 }
1504
1505 if (skp != NULL)
1506 *skp = sk;
1507 return (sk);
1508 err:
1509 if ((skp == NULL) || (*skp == NULL))
1510 sk_SSL_CIPHER_free(sk);
1511 return (NULL);
1512 }
1513
1514 #ifndef OPENSSL_NO_TLSEXT
1515 /** return a servername extension value if provided in Client Hello, or NULL.
1516 * So far, only host_name types are defined (RFC 3546).
1517 */
1518
SSL_get_servername(const SSL * s,const int type)1519 const char *SSL_get_servername(const SSL *s, const int type)
1520 {
1521 if (type != TLSEXT_NAMETYPE_host_name)
1522 return NULL;
1523
1524 return s->session && !s->tlsext_hostname ?
1525 s->session->tlsext_hostname : s->tlsext_hostname;
1526 }
1527
SSL_get_servername_type(const SSL * s)1528 int SSL_get_servername_type(const SSL *s)
1529 {
1530 if (s->session
1531 && (!s->tlsext_hostname ? s->session->
1532 tlsext_hostname : s->tlsext_hostname))
1533 return TLSEXT_NAMETYPE_host_name;
1534 return -1;
1535 }
1536
1537 # ifndef OPENSSL_NO_NEXTPROTONEG
1538 /*
1539 * SSL_select_next_proto implements the standard protocol selection. It is
1540 * expected that this function is called from the callback set by
1541 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1542 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1543 * not included in the length. A byte string of length 0 is invalid. No byte
1544 * string may be truncated. The current, but experimental algorithm for
1545 * selecting the protocol is: 1) If the server doesn't support NPN then this
1546 * is indicated to the callback. In this case, the client application has to
1547 * abort the connection or have a default application level protocol. 2) If
1548 * the server supports NPN, but advertises an empty list then the client
1549 * selects the first protcol in its list, but indicates via the API that this
1550 * fallback case was enacted. 3) Otherwise, the client finds the first
1551 * protocol in the server's list that it supports and selects this protocol.
1552 * This is because it's assumed that the server has better information about
1553 * which protocol a client should use. 4) If the client doesn't support any
1554 * of the server's advertised protocols, then this is treated the same as
1555 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1556 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1557 */
SSL_select_next_proto(unsigned char ** out,unsigned char * outlen,const unsigned char * server,unsigned int server_len,const unsigned char * client,unsigned int client_len)1558 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1559 const unsigned char *server,
1560 unsigned int server_len,
1561 const unsigned char *client,
1562 unsigned int client_len)
1563 {
1564 unsigned int i, j;
1565 const unsigned char *result;
1566 int status = OPENSSL_NPN_UNSUPPORTED;
1567
1568 /*
1569 * For each protocol in server preference order, see if we support it.
1570 */
1571 for (i = 0; i < server_len;) {
1572 for (j = 0; j < client_len;) {
1573 if (server[i] == client[j] &&
1574 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1575 /* We found a match */
1576 result = &server[i];
1577 status = OPENSSL_NPN_NEGOTIATED;
1578 goto found;
1579 }
1580 j += client[j];
1581 j++;
1582 }
1583 i += server[i];
1584 i++;
1585 }
1586
1587 /* There's no overlap between our protocols and the server's list. */
1588 result = client;
1589 status = OPENSSL_NPN_NO_OVERLAP;
1590
1591 found:
1592 *out = (unsigned char *)result + 1;
1593 *outlen = result[0];
1594 return status;
1595 }
1596
1597 /*
1598 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1599 * client's requested protocol for this connection and returns 0. If the
1600 * client didn't request any protocol, then *data is set to NULL. Note that
1601 * the client can request any protocol it chooses. The value returned from
1602 * this function need not be a member of the list of supported protocols
1603 * provided by the callback.
1604 */
SSL_get0_next_proto_negotiated(const SSL * s,const unsigned char ** data,unsigned * len)1605 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1606 unsigned *len)
1607 {
1608 *data = s->next_proto_negotiated;
1609 if (!*data) {
1610 *len = 0;
1611 } else {
1612 *len = s->next_proto_negotiated_len;
1613 }
1614 }
1615
1616 /*
1617 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1618 * a TLS server needs a list of supported protocols for Next Protocol
1619 * Negotiation. The returned list must be in wire format. The list is
1620 * returned by setting |out| to point to it and |outlen| to its length. This
1621 * memory will not be modified, but one should assume that the SSL* keeps a
1622 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1623 * wishes to advertise. Otherwise, no such extension will be included in the
1624 * ServerHello.
1625 */
SSL_CTX_set_next_protos_advertised_cb(SSL_CTX * ctx,int (* cb)(SSL * ssl,const unsigned char ** out,unsigned int * outlen,void * arg),void * arg)1626 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1627 int (*cb) (SSL *ssl,
1628 const unsigned char
1629 **out,
1630 unsigned int *outlen,
1631 void *arg), void *arg)
1632 {
1633 ctx->next_protos_advertised_cb = cb;
1634 ctx->next_protos_advertised_cb_arg = arg;
1635 }
1636
1637 /*
1638 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1639 * client needs to select a protocol from the server's provided list. |out|
1640 * must be set to point to the selected protocol (which may be within |in|).
1641 * The length of the protocol name must be written into |outlen|. The
1642 * server's advertised protocols are provided in |in| and |inlen|. The
1643 * callback can assume that |in| is syntactically valid. The client must
1644 * select a protocol. It is fatal to the connection if this callback returns
1645 * a value other than SSL_TLSEXT_ERR_OK.
1646 */
SSL_CTX_set_next_proto_select_cb(SSL_CTX * ctx,int (* cb)(SSL * s,unsigned char ** out,unsigned char * outlen,const unsigned char * in,unsigned int inlen,void * arg),void * arg)1647 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1648 int (*cb) (SSL *s, unsigned char **out,
1649 unsigned char *outlen,
1650 const unsigned char *in,
1651 unsigned int inlen,
1652 void *arg), void *arg)
1653 {
1654 ctx->next_proto_select_cb = cb;
1655 ctx->next_proto_select_cb_arg = arg;
1656 }
1657 # endif
1658 #endif
1659
SSL_export_keying_material(SSL * s,unsigned char * out,size_t olen,const char * label,size_t llen,const unsigned char * p,size_t plen,int use_context)1660 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1661 const char *label, size_t llen,
1662 const unsigned char *p, size_t plen,
1663 int use_context)
1664 {
1665 if (s->version < TLS1_VERSION)
1666 return -1;
1667
1668 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1669 llen, p, plen,
1670 use_context);
1671 }
1672
ssl_session_hash(const SSL_SESSION * a)1673 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1674 {
1675 unsigned long l;
1676
1677 l = (unsigned long)
1678 ((unsigned int)a->session_id[0]) |
1679 ((unsigned int)a->session_id[1] << 8L) |
1680 ((unsigned long)a->session_id[2] << 16L) |
1681 ((unsigned long)a->session_id[3] << 24L);
1682 return (l);
1683 }
1684
1685 /*
1686 * NB: If this function (or indeed the hash function which uses a sort of
1687 * coarser function than this one) is changed, ensure
1688 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1689 * being able to construct an SSL_SESSION that will collide with any existing
1690 * session with a matching session ID.
1691 */
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)1692 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1693 {
1694 if (a->ssl_version != b->ssl_version)
1695 return (1);
1696 if (a->session_id_length != b->session_id_length)
1697 return (1);
1698 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1699 }
1700
1701 /*
1702 * These wrapper functions should remain rather than redeclaring
1703 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1704 * variable. The reason is that the functions aren't static, they're exposed
1705 * via ssl.h.
1706 */
IMPLEMENT_LHASH_HASH_FN(ssl_session,SSL_SESSION)1707 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1708 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1709
1710 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1711 {
1712 SSL_CTX *ret = NULL;
1713
1714 if (meth == NULL) {
1715 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1716 return (NULL);
1717 }
1718 #ifdef OPENSSL_FIPS
1719 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1720 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1721 return NULL;
1722 }
1723 #endif
1724
1725 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1726 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1727 goto err;
1728 }
1729 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1730 if (ret == NULL)
1731 goto err;
1732
1733 memset(ret, 0, sizeof(SSL_CTX));
1734
1735 ret->method = meth;
1736
1737 ret->cert_store = NULL;
1738 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1739 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1740 ret->session_cache_head = NULL;
1741 ret->session_cache_tail = NULL;
1742
1743 /* We take the system default */
1744 ret->session_timeout = meth->get_timeout();
1745
1746 ret->new_session_cb = 0;
1747 ret->remove_session_cb = 0;
1748 ret->get_session_cb = 0;
1749 ret->generate_session_id = 0;
1750
1751 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1752
1753 ret->references = 1;
1754 ret->quiet_shutdown = 0;
1755
1756 /* ret->cipher=NULL;*/
1757 /*-
1758 ret->s2->challenge=NULL;
1759 ret->master_key=NULL;
1760 ret->key_arg=NULL;
1761 ret->s2->conn_id=NULL; */
1762
1763 ret->info_callback = NULL;
1764
1765 ret->app_verify_callback = 0;
1766 ret->app_verify_arg = NULL;
1767
1768 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1769 ret->read_ahead = 0;
1770 ret->msg_callback = 0;
1771 ret->msg_callback_arg = NULL;
1772 ret->verify_mode = SSL_VERIFY_NONE;
1773 #if 0
1774 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1775 #endif
1776 ret->sid_ctx_length = 0;
1777 ret->default_verify_callback = NULL;
1778 if ((ret->cert = ssl_cert_new()) == NULL)
1779 goto err;
1780
1781 ret->default_passwd_callback = 0;
1782 ret->default_passwd_callback_userdata = NULL;
1783 ret->client_cert_cb = 0;
1784 ret->app_gen_cookie_cb = 0;
1785 ret->app_verify_cookie_cb = 0;
1786
1787 ret->sessions = lh_SSL_SESSION_new();
1788 if (ret->sessions == NULL)
1789 goto err;
1790 ret->cert_store = X509_STORE_new();
1791 if (ret->cert_store == NULL)
1792 goto err;
1793
1794 ssl_create_cipher_list(ret->method,
1795 &ret->cipher_list, &ret->cipher_list_by_id,
1796 meth->version ==
1797 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1798 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1799 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1800 goto err2;
1801 }
1802
1803 ret->param = X509_VERIFY_PARAM_new();
1804 if (!ret->param)
1805 goto err;
1806
1807 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) {
1808 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1809 goto err2;
1810 }
1811 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1812 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1813 goto err2;
1814 }
1815 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1816 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1817 goto err2;
1818 }
1819
1820 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1821 goto err;
1822
1823 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1824
1825 ret->extra_certs = NULL;
1826 /* No compression for DTLS */
1827 if (meth->version != DTLS1_VERSION)
1828 ret->comp_methods = SSL_COMP_get_compression_methods();
1829
1830 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1831
1832 #ifndef OPENSSL_NO_TLSEXT
1833 ret->tlsext_servername_callback = 0;
1834 ret->tlsext_servername_arg = NULL;
1835 /* Setup RFC4507 ticket keys */
1836 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1837 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1838 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1839 ret->options |= SSL_OP_NO_TICKET;
1840
1841 ret->tlsext_status_cb = 0;
1842 ret->tlsext_status_arg = NULL;
1843
1844 # ifndef OPENSSL_NO_NEXTPROTONEG
1845 ret->next_protos_advertised_cb = 0;
1846 ret->next_proto_select_cb = 0;
1847 # endif
1848 #endif
1849 #ifndef OPENSSL_NO_PSK
1850 ret->psk_identity_hint = NULL;
1851 ret->psk_client_callback = NULL;
1852 ret->psk_server_callback = NULL;
1853 #endif
1854 #ifndef OPENSSL_NO_SRP
1855 SSL_CTX_SRP_CTX_init(ret);
1856 #endif
1857 #ifndef OPENSSL_NO_BUF_FREELISTS
1858 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1859 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1860 if (!ret->rbuf_freelist)
1861 goto err;
1862 ret->rbuf_freelist->chunklen = 0;
1863 ret->rbuf_freelist->len = 0;
1864 ret->rbuf_freelist->head = NULL;
1865 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1866 if (!ret->wbuf_freelist) {
1867 OPENSSL_free(ret->rbuf_freelist);
1868 goto err;
1869 }
1870 ret->wbuf_freelist->chunklen = 0;
1871 ret->wbuf_freelist->len = 0;
1872 ret->wbuf_freelist->head = NULL;
1873 #endif
1874 #ifndef OPENSSL_NO_ENGINE
1875 ret->client_cert_engine = NULL;
1876 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1877 # define eng_strx(x) #x
1878 # define eng_str(x) eng_strx(x)
1879 /* Use specific client engine automatically... ignore errors */
1880 {
1881 ENGINE *eng;
1882 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1883 if (!eng) {
1884 ERR_clear_error();
1885 ENGINE_load_builtin_engines();
1886 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1887 }
1888 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1889 ERR_clear_error();
1890 }
1891 # endif
1892 #endif
1893 /*
1894 * Default is to connect to non-RI servers. When RI is more widely
1895 * deployed might change this.
1896 */
1897 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1898
1899 return (ret);
1900 err:
1901 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1902 err2:
1903 if (ret != NULL)
1904 SSL_CTX_free(ret);
1905 return (NULL);
1906 }
1907
1908 #if 0
1909 static void SSL_COMP_free(SSL_COMP *comp)
1910 {
1911 OPENSSL_free(comp);
1912 }
1913 #endif
1914
1915 #ifndef OPENSSL_NO_BUF_FREELISTS
ssl_buf_freelist_free(SSL3_BUF_FREELIST * list)1916 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1917 {
1918 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1919 for (ent = list->head; ent; ent = next) {
1920 next = ent->next;
1921 OPENSSL_free(ent);
1922 }
1923 OPENSSL_free(list);
1924 }
1925 #endif
1926
SSL_CTX_free(SSL_CTX * a)1927 void SSL_CTX_free(SSL_CTX *a)
1928 {
1929 int i;
1930
1931 if (a == NULL)
1932 return;
1933
1934 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1935 #ifdef REF_PRINT
1936 REF_PRINT("SSL_CTX", a);
1937 #endif
1938 if (i > 0)
1939 return;
1940 #ifdef REF_CHECK
1941 if (i < 0) {
1942 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
1943 abort(); /* ok */
1944 }
1945 #endif
1946
1947 if (a->param)
1948 X509_VERIFY_PARAM_free(a->param);
1949
1950 /*
1951 * Free internal session cache. However: the remove_cb() may reference
1952 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1953 * after the sessions were flushed.
1954 * As the ex_data handling routines might also touch the session cache,
1955 * the most secure solution seems to be: empty (flush) the cache, then
1956 * free ex_data, then finally free the cache.
1957 * (See ticket [openssl.org #212].)
1958 */
1959 if (a->sessions != NULL)
1960 SSL_CTX_flush_sessions(a, 0);
1961
1962 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1963
1964 if (a->sessions != NULL)
1965 lh_SSL_SESSION_free(a->sessions);
1966
1967 if (a->cert_store != NULL)
1968 X509_STORE_free(a->cert_store);
1969 if (a->cipher_list != NULL)
1970 sk_SSL_CIPHER_free(a->cipher_list);
1971 if (a->cipher_list_by_id != NULL)
1972 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1973 if (a->cert != NULL)
1974 ssl_cert_free(a->cert);
1975 if (a->client_CA != NULL)
1976 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
1977 if (a->extra_certs != NULL)
1978 sk_X509_pop_free(a->extra_certs, X509_free);
1979 #if 0 /* This should never be done, since it
1980 * removes a global database */
1981 if (a->comp_methods != NULL)
1982 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
1983 #else
1984 a->comp_methods = NULL;
1985 #endif
1986
1987 #ifndef OPENSSL_NO_SRTP
1988 if (a->srtp_profiles)
1989 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1990 #endif
1991
1992 #ifndef OPENSSL_NO_PSK
1993 if (a->psk_identity_hint)
1994 OPENSSL_free(a->psk_identity_hint);
1995 #endif
1996 #ifndef OPENSSL_NO_SRP
1997 SSL_CTX_SRP_CTX_free(a);
1998 #endif
1999 #ifndef OPENSSL_NO_ENGINE
2000 if (a->client_cert_engine)
2001 ENGINE_finish(a->client_cert_engine);
2002 #endif
2003
2004 #ifndef OPENSSL_NO_BUF_FREELISTS
2005 if (a->wbuf_freelist)
2006 ssl_buf_freelist_free(a->wbuf_freelist);
2007 if (a->rbuf_freelist)
2008 ssl_buf_freelist_free(a->rbuf_freelist);
2009 #endif
2010
2011 OPENSSL_free(a);
2012 }
2013
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)2014 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2015 {
2016 ctx->default_passwd_callback = cb;
2017 }
2018
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)2019 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2020 {
2021 ctx->default_passwd_callback_userdata = u;
2022 }
2023
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)2024 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2025 int (*cb) (X509_STORE_CTX *, void *),
2026 void *arg)
2027 {
2028 ctx->app_verify_callback = cb;
2029 ctx->app_verify_arg = arg;
2030 }
2031
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))2032 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2033 int (*cb) (int, X509_STORE_CTX *))
2034 {
2035 ctx->verify_mode = mode;
2036 ctx->default_verify_callback = cb;
2037 }
2038
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)2039 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2040 {
2041 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2042 }
2043
ssl_set_cert_masks(CERT * c,const SSL_CIPHER * cipher)2044 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2045 {
2046 CERT_PKEY *cpk;
2047 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2048 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2049 int rsa_tmp_export, dh_tmp_export, kl;
2050 unsigned long mask_k, mask_a, emask_k, emask_a;
2051 #ifndef OPENSSL_NO_ECDSA
2052 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2053 #endif
2054 #ifndef OPENSSL_NO_ECDH
2055 int have_ecdh_tmp, ecdh_ok;
2056 #endif
2057 #ifndef OPENSSL_NO_EC
2058 X509 *x = NULL;
2059 EVP_PKEY *ecc_pkey = NULL;
2060 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2061 #endif
2062 if (c == NULL)
2063 return;
2064
2065 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2066
2067 #ifndef OPENSSL_NO_RSA
2068 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2069 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2070 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2071 #else
2072 rsa_tmp = rsa_tmp_export = 0;
2073 #endif
2074 #ifndef OPENSSL_NO_DH
2075 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2076 dh_tmp_export = (c->dh_tmp_cb != NULL ||
2077 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl));
2078 #else
2079 dh_tmp = dh_tmp_export = 0;
2080 #endif
2081
2082 #ifndef OPENSSL_NO_ECDH
2083 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
2084 #endif
2085 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2086 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL);
2087 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2088 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2089 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL);
2090 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2091 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL);
2092 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2093 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL);
2094 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2095 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2096 /* FIX THIS EAY EAY EAY */
2097 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL);
2098 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2099 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2100 #ifndef OPENSSL_NO_EC
2101 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL);
2102 #endif
2103 mask_k = 0;
2104 mask_a = 0;
2105 emask_k = 0;
2106 emask_a = 0;
2107
2108 #ifdef CIPHER_DEBUG
2109 fprintf(stderr,
2110 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2111 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2112 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2113 #endif
2114
2115 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2116 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2117 mask_k |= SSL_kGOST;
2118 mask_a |= SSL_aGOST01;
2119 }
2120 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2121 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2122 mask_k |= SSL_kGOST;
2123 mask_a |= SSL_aGOST94;
2124 }
2125
2126 if (rsa_enc || (rsa_tmp && rsa_sign))
2127 mask_k |= SSL_kRSA;
2128 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2129 emask_k |= SSL_kRSA;
2130
2131 #if 0
2132 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2133 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2134 mask_k |= SSL_kEDH;
2135 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2136 (rsa_enc || rsa_sign || dsa_sign))
2137 emask_k |= SSL_kEDH;
2138 #endif
2139
2140 if (dh_tmp_export)
2141 emask_k |= SSL_kEDH;
2142
2143 if (dh_tmp)
2144 mask_k |= SSL_kEDH;
2145
2146 if (dh_rsa)
2147 mask_k |= SSL_kDHr;
2148 if (dh_rsa_export)
2149 emask_k |= SSL_kDHr;
2150
2151 if (dh_dsa)
2152 mask_k |= SSL_kDHd;
2153 if (dh_dsa_export)
2154 emask_k |= SSL_kDHd;
2155
2156 if (rsa_enc || rsa_sign) {
2157 mask_a |= SSL_aRSA;
2158 emask_a |= SSL_aRSA;
2159 }
2160
2161 if (dsa_sign) {
2162 mask_a |= SSL_aDSS;
2163 emask_a |= SSL_aDSS;
2164 }
2165
2166 mask_a |= SSL_aNULL;
2167 emask_a |= SSL_aNULL;
2168
2169 #ifndef OPENSSL_NO_KRB5
2170 mask_k |= SSL_kKRB5;
2171 mask_a |= SSL_aKRB5;
2172 emask_k |= SSL_kKRB5;
2173 emask_a |= SSL_aKRB5;
2174 #endif
2175
2176 /*
2177 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2178 * depending on the key usage extension.
2179 */
2180 #ifndef OPENSSL_NO_EC
2181 if (have_ecc_cert) {
2182 /* This call populates extension flags (ex_flags) */
2183 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2184 X509_check_purpose(x, -1, 0);
2185 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2186 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2187 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2188 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2189 ecc_pkey = X509_get_pubkey(x);
2190 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2191 EVP_PKEY_free(ecc_pkey);
2192 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2193 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2194 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2195 }
2196 #ifndef OPENSSL_NO_ECDH
2197 if (ecdh_ok) {
2198
2199 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2200 mask_k |= SSL_kECDHr;
2201 mask_a |= SSL_aECDH;
2202 if (ecc_pkey_size <= 163) {
2203 emask_k |= SSL_kECDHr;
2204 emask_a |= SSL_aECDH;
2205 }
2206 }
2207
2208 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2209 mask_k |= SSL_kECDHe;
2210 mask_a |= SSL_aECDH;
2211 if (ecc_pkey_size <= 163) {
2212 emask_k |= SSL_kECDHe;
2213 emask_a |= SSL_aECDH;
2214 }
2215 }
2216 }
2217 #endif
2218 #ifndef OPENSSL_NO_ECDSA
2219 if (ecdsa_ok) {
2220 mask_a |= SSL_aECDSA;
2221 emask_a |= SSL_aECDSA;
2222 }
2223 #endif
2224 }
2225 #endif
2226 #ifndef OPENSSL_NO_ECDH
2227 if (have_ecdh_tmp) {
2228 mask_k |= SSL_kEECDH;
2229 emask_k |= SSL_kEECDH;
2230 }
2231 #endif
2232
2233 #ifndef OPENSSL_NO_PSK
2234 mask_k |= SSL_kPSK;
2235 mask_a |= SSL_aPSK;
2236 emask_k |= SSL_kPSK;
2237 emask_a |= SSL_aPSK;
2238 #endif
2239
2240 c->mask_k = mask_k;
2241 c->mask_a = mask_a;
2242 c->export_mask_k = emask_k;
2243 c->export_mask_a = emask_a;
2244 c->valid = 1;
2245 }
2246
2247 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2248 #define ku_reject(x, usage) \
2249 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2250
2251 #ifndef OPENSSL_NO_EC
2252
ssl_check_srvr_ecc_cert_and_alg(X509 * x,SSL * s)2253 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2254 {
2255 unsigned long alg_k, alg_a;
2256 EVP_PKEY *pkey = NULL;
2257 int keysize = 0;
2258 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2259 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2260
2261 alg_k = cs->algorithm_mkey;
2262 alg_a = cs->algorithm_auth;
2263
2264 if (SSL_C_IS_EXPORT(cs)) {
2265 /* ECDH key length in export ciphers must be <= 163 bits */
2266 pkey = X509_get_pubkey(x);
2267 if (pkey == NULL)
2268 return 0;
2269 keysize = EVP_PKEY_bits(pkey);
2270 EVP_PKEY_free(pkey);
2271 if (keysize > 163)
2272 return 0;
2273 }
2274
2275 /* This call populates the ex_flags field correctly */
2276 X509_check_purpose(x, -1, 0);
2277 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2278 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2279 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2280 }
2281 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2282 /* key usage, if present, must allow key agreement */
2283 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2284 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2285 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2286 return 0;
2287 }
2288 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2289 /* signature alg must be ECDSA */
2290 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2291 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2292 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2293 return 0;
2294 }
2295 }
2296 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2297 /* signature alg must be RSA */
2298
2299 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2300 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2301 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2302 return 0;
2303 }
2304 }
2305 }
2306 if (alg_a & SSL_aECDSA) {
2307 /* key usage, if present, must allow signing */
2308 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2309 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2310 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2311 return 0;
2312 }
2313 }
2314
2315 return 1; /* all checks are ok */
2316 }
2317
2318 #endif
2319
2320 /* THIS NEEDS CLEANING UP */
ssl_get_server_send_pkey(const SSL * s)2321 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2322 {
2323 unsigned long alg_k, alg_a;
2324 CERT *c;
2325 int i;
2326
2327 c = s->cert;
2328 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2329
2330 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2331 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2332
2333 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
2334 /*
2335 * we don't need to look at SSL_kEECDH since no certificate is needed
2336 * for anon ECDH and for authenticated EECDH, the check for the auth
2337 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
2338 * not an RSA cert but for EECDH-RSA we need an RSA cert. Placing the
2339 * checks for SSL_kECDH before RSA checks ensures the correct cert is
2340 * chosen.
2341 */
2342 i = SSL_PKEY_ECC;
2343 } else if (alg_a & SSL_aECDSA) {
2344 i = SSL_PKEY_ECC;
2345 } else if (alg_k & SSL_kDHr)
2346 i = SSL_PKEY_DH_RSA;
2347 else if (alg_k & SSL_kDHd)
2348 i = SSL_PKEY_DH_DSA;
2349 else if (alg_a & SSL_aDSS)
2350 i = SSL_PKEY_DSA_SIGN;
2351 else if (alg_a & SSL_aRSA) {
2352 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2353 i = SSL_PKEY_RSA_SIGN;
2354 else
2355 i = SSL_PKEY_RSA_ENC;
2356 } else if (alg_a & SSL_aKRB5) {
2357 /* VRS something else here? */
2358 return (NULL);
2359 } else if (alg_a & SSL_aGOST94)
2360 i = SSL_PKEY_GOST94;
2361 else if (alg_a & SSL_aGOST01)
2362 i = SSL_PKEY_GOST01;
2363 else { /* if (alg_a & SSL_aNULL) */
2364
2365 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR);
2366 return (NULL);
2367 }
2368
2369 return c->pkeys + i;
2370 }
2371
ssl_get_server_send_cert(const SSL * s)2372 X509 *ssl_get_server_send_cert(const SSL *s)
2373 {
2374 CERT_PKEY *cpk;
2375 cpk = ssl_get_server_send_pkey(s);
2376 if (!cpk)
2377 return NULL;
2378 return cpk->x509;
2379 }
2380
ssl_get_sign_pkey(SSL * s,const SSL_CIPHER * cipher,const EVP_MD ** pmd)2381 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2382 const EVP_MD **pmd)
2383 {
2384 unsigned long alg_a;
2385 CERT *c;
2386 int idx = -1;
2387
2388 alg_a = cipher->algorithm_auth;
2389 c = s->cert;
2390
2391 if ((alg_a & SSL_aDSS) &&
2392 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2393 idx = SSL_PKEY_DSA_SIGN;
2394 else if (alg_a & SSL_aRSA) {
2395 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2396 idx = SSL_PKEY_RSA_SIGN;
2397 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2398 idx = SSL_PKEY_RSA_ENC;
2399 } else if ((alg_a & SSL_aECDSA) &&
2400 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2401 idx = SSL_PKEY_ECC;
2402 if (idx == -1) {
2403 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2404 return (NULL);
2405 }
2406 if (pmd)
2407 *pmd = c->pkeys[idx].digest;
2408 return c->pkeys[idx].privatekey;
2409 }
2410
ssl_update_cache(SSL * s,int mode)2411 void ssl_update_cache(SSL *s, int mode)
2412 {
2413 int i;
2414
2415 /*
2416 * If the session_id_length is 0, we are not supposed to cache it, and it
2417 * would be rather hard to do anyway :-)
2418 */
2419 if (s->session->session_id_length == 0)
2420 return;
2421
2422 i = s->session_ctx->session_cache_mode;
2423 if ((i & mode) && (!s->hit)
2424 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2425 || SSL_CTX_add_session(s->session_ctx, s->session))
2426 && (s->session_ctx->new_session_cb != NULL)) {
2427 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2428 if (!s->session_ctx->new_session_cb(s, s->session))
2429 SSL_SESSION_free(s->session);
2430 }
2431
2432 /* auto flush every 255 connections */
2433 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2434 if ((((mode & SSL_SESS_CACHE_CLIENT)
2435 ? s->session_ctx->stats.sess_connect_good
2436 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2437 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2438 }
2439 }
2440 }
2441
SSL_get_ssl_method(SSL * s)2442 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2443 {
2444 return (s->method);
2445 }
2446
SSL_set_ssl_method(SSL * s,const SSL_METHOD * meth)2447 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2448 {
2449 int conn = -1;
2450 int ret = 1;
2451
2452 if (s->method != meth) {
2453 if (s->handshake_func != NULL)
2454 conn = (s->handshake_func == s->method->ssl_connect);
2455
2456 if (s->method->version == meth->version)
2457 s->method = meth;
2458 else {
2459 s->method->ssl_free(s);
2460 s->method = meth;
2461 ret = s->method->ssl_new(s);
2462 }
2463
2464 if (conn == 1)
2465 s->handshake_func = meth->ssl_connect;
2466 else if (conn == 0)
2467 s->handshake_func = meth->ssl_accept;
2468 }
2469 return (ret);
2470 }
2471
SSL_get_error(const SSL * s,int i)2472 int SSL_get_error(const SSL *s, int i)
2473 {
2474 int reason;
2475 unsigned long l;
2476 BIO *bio;
2477
2478 if (i > 0)
2479 return (SSL_ERROR_NONE);
2480
2481 /*
2482 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2483 * where we do encode the error
2484 */
2485 if ((l = ERR_peek_error()) != 0) {
2486 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2487 return (SSL_ERROR_SYSCALL);
2488 else
2489 return (SSL_ERROR_SSL);
2490 }
2491
2492 if ((i < 0) && SSL_want_read(s)) {
2493 bio = SSL_get_rbio(s);
2494 if (BIO_should_read(bio))
2495 return (SSL_ERROR_WANT_READ);
2496 else if (BIO_should_write(bio))
2497 /*
2498 * This one doesn't make too much sense ... We never try to write
2499 * to the rbio, and an application program where rbio and wbio
2500 * are separate couldn't even know what it should wait for.
2501 * However if we ever set s->rwstate incorrectly (so that we have
2502 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2503 * wbio *are* the same, this test works around that bug; so it
2504 * might be safer to keep it.
2505 */
2506 return (SSL_ERROR_WANT_WRITE);
2507 else if (BIO_should_io_special(bio)) {
2508 reason = BIO_get_retry_reason(bio);
2509 if (reason == BIO_RR_CONNECT)
2510 return (SSL_ERROR_WANT_CONNECT);
2511 else if (reason == BIO_RR_ACCEPT)
2512 return (SSL_ERROR_WANT_ACCEPT);
2513 else
2514 return (SSL_ERROR_SYSCALL); /* unknown */
2515 }
2516 }
2517
2518 if ((i < 0) && SSL_want_write(s)) {
2519 bio = SSL_get_wbio(s);
2520 if (BIO_should_write(bio))
2521 return (SSL_ERROR_WANT_WRITE);
2522 else if (BIO_should_read(bio))
2523 /*
2524 * See above (SSL_want_read(s) with BIO_should_write(bio))
2525 */
2526 return (SSL_ERROR_WANT_READ);
2527 else if (BIO_should_io_special(bio)) {
2528 reason = BIO_get_retry_reason(bio);
2529 if (reason == BIO_RR_CONNECT)
2530 return (SSL_ERROR_WANT_CONNECT);
2531 else if (reason == BIO_RR_ACCEPT)
2532 return (SSL_ERROR_WANT_ACCEPT);
2533 else
2534 return (SSL_ERROR_SYSCALL);
2535 }
2536 }
2537 if ((i < 0) && SSL_want_x509_lookup(s)) {
2538 return (SSL_ERROR_WANT_X509_LOOKUP);
2539 }
2540
2541 if (i == 0) {
2542 if (s->version == SSL2_VERSION) {
2543 /* assume it is the socket being closed */
2544 return (SSL_ERROR_ZERO_RETURN);
2545 } else {
2546 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2547 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2548 return (SSL_ERROR_ZERO_RETURN);
2549 }
2550 }
2551 return (SSL_ERROR_SYSCALL);
2552 }
2553
SSL_do_handshake(SSL * s)2554 int SSL_do_handshake(SSL *s)
2555 {
2556 int ret = 1;
2557
2558 if (s->handshake_func == NULL) {
2559 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2560 return (-1);
2561 }
2562
2563 s->method->ssl_renegotiate_check(s);
2564
2565 if (SSL_in_init(s) || SSL_in_before(s)) {
2566 ret = s->handshake_func(s);
2567 }
2568 return (ret);
2569 }
2570
2571 /*
2572 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2573 * calls will reset it
2574 */
SSL_set_accept_state(SSL * s)2575 void SSL_set_accept_state(SSL *s)
2576 {
2577 s->server = 1;
2578 s->shutdown = 0;
2579 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2580 s->handshake_func = s->method->ssl_accept;
2581 /* clear the current cipher */
2582 ssl_clear_cipher_ctx(s);
2583 ssl_clear_hash_ctx(&s->read_hash);
2584 ssl_clear_hash_ctx(&s->write_hash);
2585 }
2586
SSL_set_connect_state(SSL * s)2587 void SSL_set_connect_state(SSL *s)
2588 {
2589 s->server = 0;
2590 s->shutdown = 0;
2591 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2592 s->handshake_func = s->method->ssl_connect;
2593 /* clear the current cipher */
2594 ssl_clear_cipher_ctx(s);
2595 ssl_clear_hash_ctx(&s->read_hash);
2596 ssl_clear_hash_ctx(&s->write_hash);
2597 }
2598
ssl_undefined_function(SSL * s)2599 int ssl_undefined_function(SSL *s)
2600 {
2601 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2602 return (0);
2603 }
2604
ssl_undefined_void_function(void)2605 int ssl_undefined_void_function(void)
2606 {
2607 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2608 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2609 return (0);
2610 }
2611
ssl_undefined_const_function(const SSL * s)2612 int ssl_undefined_const_function(const SSL *s)
2613 {
2614 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2615 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2616 return (0);
2617 }
2618
ssl_bad_method(int ver)2619 SSL_METHOD *ssl_bad_method(int ver)
2620 {
2621 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2622 return (NULL);
2623 }
2624
SSL_get_version(const SSL * s)2625 const char *SSL_get_version(const SSL *s)
2626 {
2627 if (s->version == TLS1_2_VERSION)
2628 return ("TLSv1.2");
2629 else if (s->version == TLS1_1_VERSION)
2630 return ("TLSv1.1");
2631 else if (s->version == TLS1_VERSION)
2632 return ("TLSv1");
2633 else if (s->version == SSL3_VERSION)
2634 return ("SSLv3");
2635 else if (s->version == SSL2_VERSION)
2636 return ("SSLv2");
2637 else
2638 return ("unknown");
2639 }
2640
SSL_dup(SSL * s)2641 SSL *SSL_dup(SSL *s)
2642 {
2643 STACK_OF(X509_NAME) *sk;
2644 X509_NAME *xn;
2645 SSL *ret;
2646 int i;
2647
2648 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2649 return (NULL);
2650
2651 ret->version = s->version;
2652 ret->type = s->type;
2653 ret->method = s->method;
2654
2655 if (s->session != NULL) {
2656 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2657 SSL_copy_session_id(ret, s);
2658 } else {
2659 /*
2660 * No session has been established yet, so we have to expect that
2661 * s->cert or ret->cert will be changed later -- they should not both
2662 * point to the same object, and thus we can't use
2663 * SSL_copy_session_id.
2664 */
2665
2666 ret->method->ssl_free(ret);
2667 ret->method = s->method;
2668 ret->method->ssl_new(ret);
2669
2670 if (s->cert != NULL) {
2671 if (ret->cert != NULL) {
2672 ssl_cert_free(ret->cert);
2673 }
2674 ret->cert = ssl_cert_dup(s->cert);
2675 if (ret->cert == NULL)
2676 goto err;
2677 }
2678
2679 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2680 }
2681
2682 ret->options = s->options;
2683 ret->mode = s->mode;
2684 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2685 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2686 ret->msg_callback = s->msg_callback;
2687 ret->msg_callback_arg = s->msg_callback_arg;
2688 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2689 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2690 ret->generate_session_id = s->generate_session_id;
2691
2692 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2693
2694 ret->debug = s->debug;
2695
2696 /* copy app data, a little dangerous perhaps */
2697 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2698 goto err;
2699
2700 /* setup rbio, and wbio */
2701 if (s->rbio != NULL) {
2702 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2703 goto err;
2704 }
2705 if (s->wbio != NULL) {
2706 if (s->wbio != s->rbio) {
2707 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2708 goto err;
2709 } else
2710 ret->wbio = ret->rbio;
2711 }
2712 ret->rwstate = s->rwstate;
2713 ret->in_handshake = s->in_handshake;
2714 ret->handshake_func = s->handshake_func;
2715 ret->server = s->server;
2716 ret->renegotiate = s->renegotiate;
2717 ret->new_session = s->new_session;
2718 ret->quiet_shutdown = s->quiet_shutdown;
2719 ret->shutdown = s->shutdown;
2720 ret->state = s->state; /* SSL_dup does not really work at any state,
2721 * though */
2722 ret->rstate = s->rstate;
2723 ret->init_num = 0; /* would have to copy ret->init_buf,
2724 * ret->init_msg, ret->init_num,
2725 * ret->init_off */
2726 ret->hit = s->hit;
2727
2728 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2729
2730 /* dup the cipher_list and cipher_list_by_id stacks */
2731 if (s->cipher_list != NULL) {
2732 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2733 goto err;
2734 }
2735 if (s->cipher_list_by_id != NULL)
2736 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2737 == NULL)
2738 goto err;
2739
2740 /* Dup the client_CA list */
2741 if (s->client_CA != NULL) {
2742 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2743 goto err;
2744 ret->client_CA = sk;
2745 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2746 xn = sk_X509_NAME_value(sk, i);
2747 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2748 X509_NAME_free(xn);
2749 goto err;
2750 }
2751 }
2752 }
2753
2754 if (0) {
2755 err:
2756 if (ret != NULL)
2757 SSL_free(ret);
2758 ret = NULL;
2759 }
2760 return (ret);
2761 }
2762
ssl_clear_cipher_ctx(SSL * s)2763 void ssl_clear_cipher_ctx(SSL *s)
2764 {
2765 if (s->enc_read_ctx != NULL) {
2766 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2767 OPENSSL_free(s->enc_read_ctx);
2768 s->enc_read_ctx = NULL;
2769 }
2770 if (s->enc_write_ctx != NULL) {
2771 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2772 OPENSSL_free(s->enc_write_ctx);
2773 s->enc_write_ctx = NULL;
2774 }
2775 #ifndef OPENSSL_NO_COMP
2776 if (s->expand != NULL) {
2777 COMP_CTX_free(s->expand);
2778 s->expand = NULL;
2779 }
2780 if (s->compress != NULL) {
2781 COMP_CTX_free(s->compress);
2782 s->compress = NULL;
2783 }
2784 #endif
2785 }
2786
2787 /* Fix this function so that it takes an optional type parameter */
SSL_get_certificate(const SSL * s)2788 X509 *SSL_get_certificate(const SSL *s)
2789 {
2790 if (s->cert != NULL)
2791 return (s->cert->key->x509);
2792 else
2793 return (NULL);
2794 }
2795
2796 /* Fix this function so that it takes an optional type parameter */
SSL_get_privatekey(SSL * s)2797 EVP_PKEY *SSL_get_privatekey(SSL *s)
2798 {
2799 if (s->cert != NULL)
2800 return (s->cert->key->privatekey);
2801 else
2802 return (NULL);
2803 }
2804
SSL_get_current_cipher(const SSL * s)2805 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2806 {
2807 if ((s->session != NULL) && (s->session->cipher != NULL))
2808 return (s->session->cipher);
2809 return (NULL);
2810 }
2811
2812 #ifdef OPENSSL_NO_COMP
SSL_get_current_compression(SSL * s)2813 const void *SSL_get_current_compression(SSL *s)
2814 {
2815 return NULL;
2816 }
2817
SSL_get_current_expansion(SSL * s)2818 const void *SSL_get_current_expansion(SSL *s)
2819 {
2820 return NULL;
2821 }
2822 #else
2823
SSL_get_current_compression(SSL * s)2824 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2825 {
2826 if (s->compress != NULL)
2827 return (s->compress->meth);
2828 return (NULL);
2829 }
2830
SSL_get_current_expansion(SSL * s)2831 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2832 {
2833 if (s->expand != NULL)
2834 return (s->expand->meth);
2835 return (NULL);
2836 }
2837 #endif
2838
ssl_init_wbio_buffer(SSL * s,int push)2839 int ssl_init_wbio_buffer(SSL *s, int push)
2840 {
2841 BIO *bbio;
2842
2843 if (s->bbio == NULL) {
2844 bbio = BIO_new(BIO_f_buffer());
2845 if (bbio == NULL)
2846 return (0);
2847 s->bbio = bbio;
2848 } else {
2849 bbio = s->bbio;
2850 if (s->bbio == s->wbio)
2851 s->wbio = BIO_pop(s->wbio);
2852 }
2853 (void)BIO_reset(bbio);
2854 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2855 if (!BIO_set_read_buffer_size(bbio, 1)) {
2856 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2857 return (0);
2858 }
2859 if (push) {
2860 if (s->wbio != bbio)
2861 s->wbio = BIO_push(bbio, s->wbio);
2862 } else {
2863 if (s->wbio == bbio)
2864 s->wbio = BIO_pop(bbio);
2865 }
2866 return (1);
2867 }
2868
ssl_free_wbio_buffer(SSL * s)2869 void ssl_free_wbio_buffer(SSL *s)
2870 {
2871 if (s->bbio == NULL)
2872 return;
2873
2874 if (s->bbio == s->wbio) {
2875 /* remove buffering */
2876 s->wbio = BIO_pop(s->wbio);
2877 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2878 * adding one more preprocessor symbol */
2879 assert(s->wbio != NULL);
2880 #endif
2881 }
2882 BIO_free(s->bbio);
2883 s->bbio = NULL;
2884 }
2885
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)2886 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2887 {
2888 ctx->quiet_shutdown = mode;
2889 }
2890
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)2891 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2892 {
2893 return (ctx->quiet_shutdown);
2894 }
2895
SSL_set_quiet_shutdown(SSL * s,int mode)2896 void SSL_set_quiet_shutdown(SSL *s, int mode)
2897 {
2898 s->quiet_shutdown = mode;
2899 }
2900
SSL_get_quiet_shutdown(const SSL * s)2901 int SSL_get_quiet_shutdown(const SSL *s)
2902 {
2903 return (s->quiet_shutdown);
2904 }
2905
SSL_set_shutdown(SSL * s,int mode)2906 void SSL_set_shutdown(SSL *s, int mode)
2907 {
2908 s->shutdown = mode;
2909 }
2910
SSL_get_shutdown(const SSL * s)2911 int SSL_get_shutdown(const SSL *s)
2912 {
2913 return (s->shutdown);
2914 }
2915
SSL_version(const SSL * s)2916 int SSL_version(const SSL *s)
2917 {
2918 return (s->version);
2919 }
2920
SSL_get_SSL_CTX(const SSL * ssl)2921 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2922 {
2923 return (ssl->ctx);
2924 }
2925
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)2926 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2927 {
2928 CERT *ocert = ssl->cert;
2929 if (ssl->ctx == ctx)
2930 return ssl->ctx;
2931 #ifndef OPENSSL_NO_TLSEXT
2932 if (ctx == NULL)
2933 ctx = ssl->initial_ctx;
2934 #endif
2935 ssl->cert = ssl_cert_dup(ctx->cert);
2936 if (ocert != NULL) {
2937 int i;
2938 /* Copy negotiated digests from original */
2939 for (i = 0; i < SSL_PKEY_NUM; i++) {
2940 CERT_PKEY *cpk = ocert->pkeys + i;
2941 CERT_PKEY *rpk = ssl->cert->pkeys + i;
2942 rpk->digest = cpk->digest;
2943 }
2944 ssl_cert_free(ocert);
2945 }
2946
2947 /*
2948 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
2949 * so setter APIs must prevent invalid lengths from entering the system.
2950 */
2951 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2952
2953 /*
2954 * If the session ID context matches that of the parent SSL_CTX,
2955 * inherit it from the new SSL_CTX as well. If however the context does
2956 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
2957 * leave it unchanged.
2958 */
2959 if ((ssl->ctx != NULL) &&
2960 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
2961 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
2962 ssl->sid_ctx_length = ctx->sid_ctx_length;
2963 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
2964 }
2965
2966 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2967 if (ssl->ctx != NULL)
2968 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2969 ssl->ctx = ctx;
2970
2971 return (ssl->ctx);
2972 }
2973
2974 #ifndef OPENSSL_NO_STDIO
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)2975 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2976 {
2977 return (X509_STORE_set_default_paths(ctx->cert_store));
2978 }
2979
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)2980 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2981 const char *CApath)
2982 {
2983 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2984 }
2985 #endif
2986
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))2987 void SSL_set_info_callback(SSL *ssl,
2988 void (*cb) (const SSL *ssl, int type, int val))
2989 {
2990 ssl->info_callback = cb;
2991 }
2992
2993 /*
2994 * One compiler (Diab DCC) doesn't like argument names in returned function
2995 * pointer.
2996 */
SSL_get_info_callback(const SSL * ssl)2997 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
2998 int /* type */ ,
2999 int /* val */ ) {
3000 return ssl->info_callback;
3001 }
3002
SSL_state(const SSL * ssl)3003 int SSL_state(const SSL *ssl)
3004 {
3005 return (ssl->state);
3006 }
3007
SSL_set_state(SSL * ssl,int state)3008 void SSL_set_state(SSL *ssl, int state)
3009 {
3010 ssl->state = state;
3011 }
3012
SSL_set_verify_result(SSL * ssl,long arg)3013 void SSL_set_verify_result(SSL *ssl, long arg)
3014 {
3015 ssl->verify_result = arg;
3016 }
3017
SSL_get_verify_result(const SSL * ssl)3018 long SSL_get_verify_result(const SSL *ssl)
3019 {
3020 return (ssl->verify_result);
3021 }
3022
SSL_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)3023 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3024 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3025 {
3026 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3027 new_func, dup_func, free_func);
3028 }
3029
SSL_set_ex_data(SSL * s,int idx,void * arg)3030 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3031 {
3032 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3033 }
3034
SSL_get_ex_data(const SSL * s,int idx)3035 void *SSL_get_ex_data(const SSL *s, int idx)
3036 {
3037 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3038 }
3039
SSL_CTX_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)3040 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3041 CRYPTO_EX_dup *dup_func,
3042 CRYPTO_EX_free *free_func)
3043 {
3044 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3045 new_func, dup_func, free_func);
3046 }
3047
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)3048 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3049 {
3050 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3051 }
3052
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)3053 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3054 {
3055 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3056 }
3057
ssl_ok(SSL * s)3058 int ssl_ok(SSL *s)
3059 {
3060 return (1);
3061 }
3062
SSL_CTX_get_cert_store(const SSL_CTX * ctx)3063 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3064 {
3065 return (ctx->cert_store);
3066 }
3067
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)3068 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3069 {
3070 if (ctx->cert_store != NULL)
3071 X509_STORE_free(ctx->cert_store);
3072 ctx->cert_store = store;
3073 }
3074
SSL_want(const SSL * s)3075 int SSL_want(const SSL *s)
3076 {
3077 return (s->rwstate);
3078 }
3079
3080 /**
3081 * \brief Set the callback for generating temporary RSA keys.
3082 * \param ctx the SSL context.
3083 * \param cb the callback
3084 */
3085
3086 #ifndef OPENSSL_NO_RSA
SSL_CTX_set_tmp_rsa_callback(SSL_CTX * ctx,RSA * (* cb)(SSL * ssl,int is_export,int keylength))3087 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3088 int is_export,
3089 int keylength))
3090 {
3091 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3092 }
3093
SSL_set_tmp_rsa_callback(SSL * ssl,RSA * (* cb)(SSL * ssl,int is_export,int keylength))3094 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3095 int is_export,
3096 int keylength))
3097 {
3098 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3099 }
3100 #endif
3101
3102 #ifdef DOXYGEN
3103 /**
3104 * \brief The RSA temporary key callback function.
3105 * \param ssl the SSL session.
3106 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3107 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3108 * of the required key in bits.
3109 * \return the temporary RSA key.
3110 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3111 */
3112
cb(SSL * ssl,int is_export,int keylength)3113 RSA *cb(SSL *ssl, int is_export, int keylength)
3114 {
3115 }
3116 #endif
3117
3118 /**
3119 * \brief Set the callback for generating temporary DH keys.
3120 * \param ctx the SSL context.
3121 * \param dh the callback
3122 */
3123
3124 #ifndef OPENSSL_NO_DH
SSL_CTX_set_tmp_dh_callback(SSL_CTX * ctx,DH * (* dh)(SSL * ssl,int is_export,int keylength))3125 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3126 DH *(*dh) (SSL *ssl, int is_export,
3127 int keylength))
3128 {
3129 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3130 }
3131
SSL_set_tmp_dh_callback(SSL * ssl,DH * (* dh)(SSL * ssl,int is_export,int keylength))3132 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3133 int keylength))
3134 {
3135 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3136 }
3137 #endif
3138
3139 #ifndef OPENSSL_NO_ECDH
SSL_CTX_set_tmp_ecdh_callback(SSL_CTX * ctx,EC_KEY * (* ecdh)(SSL * ssl,int is_export,int keylength))3140 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3141 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3142 int keylength))
3143 {
3144 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3145 (void (*)(void))ecdh);
3146 }
3147
SSL_set_tmp_ecdh_callback(SSL * ssl,EC_KEY * (* ecdh)(SSL * ssl,int is_export,int keylength))3148 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3149 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3150 int keylength))
3151 {
3152 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3153 }
3154 #endif
3155
3156 #ifndef OPENSSL_NO_PSK
SSL_CTX_use_psk_identity_hint(SSL_CTX * ctx,const char * identity_hint)3157 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3158 {
3159 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3160 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3161 SSL_R_DATA_LENGTH_TOO_LONG);
3162 return 0;
3163 }
3164 if (ctx->psk_identity_hint != NULL)
3165 OPENSSL_free(ctx->psk_identity_hint);
3166 if (identity_hint != NULL) {
3167 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3168 if (ctx->psk_identity_hint == NULL)
3169 return 0;
3170 } else
3171 ctx->psk_identity_hint = NULL;
3172 return 1;
3173 }
3174
SSL_use_psk_identity_hint(SSL * s,const char * identity_hint)3175 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3176 {
3177 if (s == NULL)
3178 return 0;
3179
3180 if (s->session == NULL)
3181 return 1; /* session not created yet, ignored */
3182
3183 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3184 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3185 return 0;
3186 }
3187 if (s->session->psk_identity_hint != NULL)
3188 OPENSSL_free(s->session->psk_identity_hint);
3189 if (identity_hint != NULL) {
3190 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3191 if (s->session->psk_identity_hint == NULL)
3192 return 0;
3193 } else
3194 s->session->psk_identity_hint = NULL;
3195 return 1;
3196 }
3197
SSL_get_psk_identity_hint(const SSL * s)3198 const char *SSL_get_psk_identity_hint(const SSL *s)
3199 {
3200 if (s == NULL || s->session == NULL)
3201 return NULL;
3202 return (s->session->psk_identity_hint);
3203 }
3204
SSL_get_psk_identity(const SSL * s)3205 const char *SSL_get_psk_identity(const SSL *s)
3206 {
3207 if (s == NULL || s->session == NULL)
3208 return NULL;
3209 return (s->session->psk_identity);
3210 }
3211
SSL_set_psk_client_callback(SSL * s,unsigned int (* cb)(SSL * ssl,const char * hint,char * identity,unsigned int max_identity_len,unsigned char * psk,unsigned int max_psk_len))3212 void SSL_set_psk_client_callback(SSL *s,
3213 unsigned int (*cb) (SSL *ssl,
3214 const char *hint,
3215 char *identity,
3216 unsigned int
3217 max_identity_len,
3218 unsigned char *psk,
3219 unsigned int
3220 max_psk_len))
3221 {
3222 s->psk_client_callback = cb;
3223 }
3224
SSL_CTX_set_psk_client_callback(SSL_CTX * ctx,unsigned int (* cb)(SSL * ssl,const char * hint,char * identity,unsigned int max_identity_len,unsigned char * psk,unsigned int max_psk_len))3225 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3226 unsigned int (*cb) (SSL *ssl,
3227 const char *hint,
3228 char *identity,
3229 unsigned int
3230 max_identity_len,
3231 unsigned char *psk,
3232 unsigned int
3233 max_psk_len))
3234 {
3235 ctx->psk_client_callback = cb;
3236 }
3237
SSL_set_psk_server_callback(SSL * s,unsigned int (* cb)(SSL * ssl,const char * identity,unsigned char * psk,unsigned int max_psk_len))3238 void SSL_set_psk_server_callback(SSL *s,
3239 unsigned int (*cb) (SSL *ssl,
3240 const char *identity,
3241 unsigned char *psk,
3242 unsigned int
3243 max_psk_len))
3244 {
3245 s->psk_server_callback = cb;
3246 }
3247
SSL_CTX_set_psk_server_callback(SSL_CTX * ctx,unsigned int (* cb)(SSL * ssl,const char * identity,unsigned char * psk,unsigned int max_psk_len))3248 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3249 unsigned int (*cb) (SSL *ssl,
3250 const char *identity,
3251 unsigned char *psk,
3252 unsigned int
3253 max_psk_len))
3254 {
3255 ctx->psk_server_callback = cb;
3256 }
3257 #endif
3258
SSL_CTX_set_msg_callback(SSL_CTX * ctx,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))3259 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3260 void (*cb) (int write_p, int version,
3261 int content_type, const void *buf,
3262 size_t len, SSL *ssl, void *arg))
3263 {
3264 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3265 }
3266
SSL_set_msg_callback(SSL * ssl,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))3267 void SSL_set_msg_callback(SSL *ssl,
3268 void (*cb) (int write_p, int version,
3269 int content_type, const void *buf,
3270 size_t len, SSL *ssl, void *arg))
3271 {
3272 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3273 }
3274
3275 /*
3276 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3277 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3278 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3279 * allocated ctx;
3280 */
3281
ssl_replace_hash(EVP_MD_CTX ** hash,const EVP_MD * md)3282 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3283 {
3284 ssl_clear_hash_ctx(hash);
3285 *hash = EVP_MD_CTX_create();
3286 if (md)
3287 EVP_DigestInit_ex(*hash, md, NULL);
3288 return *hash;
3289 }
3290
ssl_clear_hash_ctx(EVP_MD_CTX ** hash)3291 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3292 {
3293
3294 if (*hash)
3295 EVP_MD_CTX_destroy(*hash);
3296 *hash = NULL;
3297 }
3298
SSL_set_debug(SSL * s,int debug)3299 void SSL_set_debug(SSL *s, int debug)
3300 {
3301 s->debug = debug;
3302 }
3303
SSL_cache_hit(SSL * s)3304 int SSL_cache_hit(SSL *s)
3305 {
3306 return s->hit;
3307 }
3308
3309 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3310 # include "../crypto/bio/bss_file.c"
3311 #endif
3312
3313 IMPLEMENT_STACK_OF(SSL_CIPHER)
3314 IMPLEMENT_STACK_OF(SSL_COMP)
3315 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3316