summaryrefslogtreecommitdiff
path: root/src/lib/libssl/ssl_lib.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libssl/ssl_lib.c')
-rw-r--r--src/lib/libssl/ssl_lib.c3059
1 files changed, 3059 insertions, 0 deletions
diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c
new file mode 100644
index 0000000000..497515f9ec
--- /dev/null
+++ b/src/lib/libssl/ssl_lib.c
@@ -0,0 +1,3059 @@
1/*! \file ssl/ssl_lib.c
2 * \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
163const char *SSL_version_str=OPENSSL_VERSION_TEXT;
164
165SSL3_ENC_METHOD ssl3_undef_enc_method={
166 /* evil casts, but these functions are only called if there's a library bug */
167 (int (*)(SSL *,int))ssl_undefined_function,
168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
171 (int (*)(SSL*, int))ssl_undefined_function,
172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
173 0, /* finish_mac_length */
174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
175 NULL, /* client_finished_label */
176 0, /* client_finished_label_len */
177 NULL, /* server_finished_label */
178 0, /* server_finished_label_len */
179 (int (*)(int))ssl_undefined_function
180 };
181
182int SSL_clear(SSL *s)
183 {
184
185 if (s->method == NULL)
186 {
187 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
188 return(0);
189 }
190
191 if (ssl_clear_bad_session(s))
192 {
193 SSL_SESSION_free(s->session);
194 s->session=NULL;
195 }
196
197 s->error=0;
198 s->hit=0;
199 s->shutdown=0;
200
201#if 0 /* Disabled since version 1.10 of this file (early return not
202 * needed because SSL_clear is not called when doing renegotiation) */
203 /* This is set if we are doing dynamic renegotiation so keep
204 * the old cipher. It is sort of a SSL_clear_lite :-) */
205 if (s->new_session) return(1);
206#else
207 if (s->new_session)
208 {
209 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
210 return 0;
211 }
212#endif
213
214 s->type=0;
215
216 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
217
218 s->version=s->method->version;
219 s->client_version=s->version;
220 s->rwstate=SSL_NOTHING;
221 s->rstate=SSL_ST_READ_HEADER;
222#if 0
223 s->read_ahead=s->ctx->read_ahead;
224#endif
225
226 if (s->init_buf != NULL)
227 {
228 BUF_MEM_free(s->init_buf);
229 s->init_buf=NULL;
230 }
231
232 ssl_clear_cipher_ctx(s);
233 ssl_clear_hash_ctx(&s->read_hash);
234 ssl_clear_hash_ctx(&s->write_hash);
235
236 s->first_packet=0;
237
238#if 1
239 /* Check to see if we were changed into a different method, if
240 * so, revert back if we are not doing session-id reuse. */
241 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
242 {
243 s->method->ssl_free(s);
244 s->method=s->ctx->method;
245 if (!s->method->ssl_new(s))
246 return(0);
247 }
248 else
249#endif
250 s->method->ssl_clear(s);
251 return(1);
252 }
253
254/** Used to change an SSL_CTXs default SSL method type */
255int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
256 {
257 STACK_OF(SSL_CIPHER) *sk;
258
259 ctx->method=meth;
260
261 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
262 &(ctx->cipher_list_by_id),
263 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
264 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
265 {
266 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
267 return(0);
268 }
269 return(1);
270 }
271
272SSL *SSL_new(SSL_CTX *ctx)
273 {
274 SSL *s;
275
276 if (ctx == NULL)
277 {
278 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
279 return(NULL);
280 }
281 if (ctx->method == NULL)
282 {
283 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
284 return(NULL);
285 }
286
287 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
288 if (s == NULL) goto err;
289 memset(s,0,sizeof(SSL));
290
291#ifndef OPENSSL_NO_KRB5
292 s->kssl_ctx = kssl_ctx_new();
293#endif /* OPENSSL_NO_KRB5 */
294
295 s->options=ctx->options;
296 s->mode=ctx->mode;
297 s->max_cert_list=ctx->max_cert_list;
298
299 if (ctx->cert != NULL)
300 {
301 /* Earlier library versions used to copy the pointer to
302 * the CERT, not its contents; only when setting new
303 * parameters for the per-SSL copy, ssl_cert_new would be
304 * called (and the direct reference to the per-SSL_CTX
305 * settings would be lost, but those still were indirectly
306 * accessed for various purposes, and for that reason they
307 * used to be known as s->ctx->default_cert).
308 * Now we don't look at the SSL_CTX's CERT after having
309 * duplicated it once. */
310
311 s->cert = ssl_cert_dup(ctx->cert);
312 if (s->cert == NULL)
313 goto err;
314 }
315 else
316 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
317
318 s->read_ahead=ctx->read_ahead;
319 s->msg_callback=ctx->msg_callback;
320 s->msg_callback_arg=ctx->msg_callback_arg;
321 s->verify_mode=ctx->verify_mode;
322#if 0
323 s->verify_depth=ctx->verify_depth;
324#endif
325 s->sid_ctx_length=ctx->sid_ctx_length;
326 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
327 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
328 s->verify_callback=ctx->default_verify_callback;
329 s->generate_session_id=ctx->generate_session_id;
330
331 s->param = X509_VERIFY_PARAM_new();
332 if (!s->param)
333 goto err;
334 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
335#if 0
336 s->purpose = ctx->purpose;
337 s->trust = ctx->trust;
338#endif
339 s->quiet_shutdown=ctx->quiet_shutdown;
340 s->max_send_fragment = ctx->max_send_fragment;
341
342 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
343 s->ctx=ctx;
344#ifndef OPENSSL_NO_TLSEXT
345 s->tlsext_debug_cb = 0;
346 s->tlsext_debug_arg = NULL;
347 s->tlsext_ticket_expected = 0;
348 s->tlsext_status_type = -1;
349 s->tlsext_status_expected = 0;
350 s->tlsext_ocsp_ids = NULL;
351 s->tlsext_ocsp_exts = NULL;
352 s->tlsext_ocsp_resp = NULL;
353 s->tlsext_ocsp_resplen = -1;
354 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
355 s->initial_ctx=ctx;
356#endif
357
358 s->verify_result=X509_V_OK;
359
360 s->method=ctx->method;
361
362 if (!s->method->ssl_new(s))
363 goto err;
364
365 s->references=1;
366 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
367
368 SSL_clear(s);
369
370 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
371
372#ifndef OPENSSL_NO_PSK
373 s->psk_client_callback=ctx->psk_client_callback;
374 s->psk_server_callback=ctx->psk_server_callback;
375#endif
376
377 return(s);
378err:
379 if (s != NULL)
380 {
381 if (s->cert != NULL)
382 ssl_cert_free(s->cert);
383 if (s->ctx != NULL)
384 SSL_CTX_free(s->ctx); /* decrement reference count */
385 OPENSSL_free(s);
386 }
387 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
388 return(NULL);
389 }
390
391int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
392 unsigned int sid_ctx_len)
393 {
394 if(sid_ctx_len > sizeof ctx->sid_ctx)
395 {
396 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
397 return 0;
398 }
399 ctx->sid_ctx_length=sid_ctx_len;
400 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
401
402 return 1;
403 }
404
405int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
406 unsigned int sid_ctx_len)
407 {
408 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
409 {
410 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
411 return 0;
412 }
413 ssl->sid_ctx_length=sid_ctx_len;
414 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
415
416 return 1;
417 }
418
419int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
420 {
421 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
422 ctx->generate_session_id = cb;
423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
424 return 1;
425 }
426
427int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
428 {
429 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
430 ssl->generate_session_id = cb;
431 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
432 return 1;
433 }
434
435int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
436 unsigned int id_len)
437 {
438 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
439 * we can "construct" a session to give us the desired check - ie. to
440 * find if there's a session in the hash table that would conflict with
441 * any new session built out of this id/id_len and the ssl_version in
442 * use by this SSL. */
443 SSL_SESSION r, *p;
444
445 if(id_len > sizeof r.session_id)
446 return 0;
447
448 r.ssl_version = ssl->version;
449 r.session_id_length = id_len;
450 memcpy(r.session_id, id, id_len);
451 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
452 * callback is calling us to check the uniqueness of a shorter ID, it
453 * must be compared as a padded-out ID because that is what it will be
454 * converted to when the callback has finished choosing it. */
455 if((r.ssl_version == SSL2_VERSION) &&
456 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
457 {
458 memset(r.session_id + id_len, 0,
459 SSL2_SSL_SESSION_ID_LENGTH - id_len);
460 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
461 }
462
463 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
464 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
465 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
466 return (p != NULL);
467 }
468
469int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
470 {
471 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
472 }
473
474int SSL_set_purpose(SSL *s, int purpose)
475 {
476 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
477 }
478
479int SSL_CTX_set_trust(SSL_CTX *s, int trust)
480 {
481 return X509_VERIFY_PARAM_set_trust(s->param, trust);
482 }
483
484int SSL_set_trust(SSL *s, int trust)
485 {
486 return X509_VERIFY_PARAM_set_trust(s->param, trust);
487 }
488
489int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
490 {
491 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
492 }
493
494int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
495 {
496 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
497 }
498
499void SSL_free(SSL *s)
500 {
501 int i;
502
503 if(s == NULL)
504 return;
505
506 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
507#ifdef REF_PRINT
508 REF_PRINT("SSL",s);
509#endif
510 if (i > 0) return;
511#ifdef REF_CHECK
512 if (i < 0)
513 {
514 fprintf(stderr,"SSL_free, bad reference count\n");
515 abort(); /* ok */
516 }
517#endif
518
519 if (s->param)
520 X509_VERIFY_PARAM_free(s->param);
521
522 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
523
524 if (s->bbio != NULL)
525 {
526 /* If the buffering BIO is in place, pop it off */
527 if (s->bbio == s->wbio)
528 {
529 s->wbio=BIO_pop(s->wbio);
530 }
531 BIO_free(s->bbio);
532 s->bbio=NULL;
533 }
534 if (s->rbio != NULL)
535 BIO_free_all(s->rbio);
536 if ((s->wbio != NULL) && (s->wbio != s->rbio))
537 BIO_free_all(s->wbio);
538
539 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
540
541 /* add extra stuff */
542 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
543 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
544
545 /* Make the next call work :-) */
546 if (s->session != NULL)
547 {
548 ssl_clear_bad_session(s);
549 SSL_SESSION_free(s->session);
550 }
551
552 ssl_clear_cipher_ctx(s);
553 ssl_clear_hash_ctx(&s->read_hash);
554 ssl_clear_hash_ctx(&s->write_hash);
555
556 if (s->cert != NULL) ssl_cert_free(s->cert);
557 /* Free up if allocated */
558
559#ifndef OPENSSL_NO_TLSEXT
560 if (s->tlsext_hostname)
561 OPENSSL_free(s->tlsext_hostname);
562 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
563#ifndef OPENSSL_NO_EC
564 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
565 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
566#endif /* OPENSSL_NO_EC */
567 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
568 if (s->tlsext_ocsp_exts)
569 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
570 X509_EXTENSION_free);
571 if (s->tlsext_ocsp_ids)
572 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
573 if (s->tlsext_ocsp_resp)
574 OPENSSL_free(s->tlsext_ocsp_resp);
575#endif
576
577 if (s->client_CA != NULL)
578 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
579
580 if (s->method != NULL) s->method->ssl_free(s);
581
582 if (s->ctx) SSL_CTX_free(s->ctx);
583
584#ifndef OPENSSL_NO_KRB5
585 if (s->kssl_ctx != NULL)
586 kssl_ctx_free(s->kssl_ctx);
587#endif /* OPENSSL_NO_KRB5 */
588
589 OPENSSL_free(s);
590 }
591
592void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
593 {
594 /* If the output buffering BIO is still in place, remove it
595 */
596 if (s->bbio != NULL)
597 {
598 if (s->wbio == s->bbio)
599 {
600 s->wbio=s->wbio->next_bio;
601 s->bbio->next_bio=NULL;
602 }
603 }
604 if ((s->rbio != NULL) && (s->rbio != rbio))
605 BIO_free_all(s->rbio);
606 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
607 BIO_free_all(s->wbio);
608 s->rbio=rbio;
609 s->wbio=wbio;
610 }
611
612BIO *SSL_get_rbio(const SSL *s)
613 { return(s->rbio); }
614
615BIO *SSL_get_wbio(const SSL *s)
616 { return(s->wbio); }
617
618int SSL_get_fd(const SSL *s)
619 {
620 return(SSL_get_rfd(s));
621 }
622
623int SSL_get_rfd(const SSL *s)
624 {
625 int ret= -1;
626 BIO *b,*r;
627
628 b=SSL_get_rbio(s);
629 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
630 if (r != NULL)
631 BIO_get_fd(r,&ret);
632 return(ret);
633 }
634
635int SSL_get_wfd(const SSL *s)
636 {
637 int ret= -1;
638 BIO *b,*r;
639
640 b=SSL_get_wbio(s);
641 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
642 if (r != NULL)
643 BIO_get_fd(r,&ret);
644 return(ret);
645 }
646
647#ifndef OPENSSL_NO_SOCK
648int SSL_set_fd(SSL *s,int fd)
649 {
650 int ret=0;
651 BIO *bio=NULL;
652
653 bio=BIO_new(BIO_s_socket());
654
655 if (bio == NULL)
656 {
657 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
658 goto err;
659 }
660 BIO_set_fd(bio,fd,BIO_NOCLOSE);
661 SSL_set_bio(s,bio,bio);
662 ret=1;
663err:
664 return(ret);
665 }
666
667int SSL_set_wfd(SSL *s,int fd)
668 {
669 int ret=0;
670 BIO *bio=NULL;
671
672 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
673 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
674 {
675 bio=BIO_new(BIO_s_socket());
676
677 if (bio == NULL)
678 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
679 BIO_set_fd(bio,fd,BIO_NOCLOSE);
680 SSL_set_bio(s,SSL_get_rbio(s),bio);
681 }
682 else
683 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
684 ret=1;
685err:
686 return(ret);
687 }
688
689int SSL_set_rfd(SSL *s,int fd)
690 {
691 int ret=0;
692 BIO *bio=NULL;
693
694 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
695 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
696 {
697 bio=BIO_new(BIO_s_socket());
698
699 if (bio == NULL)
700 {
701 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
702 goto err;
703 }
704 BIO_set_fd(bio,fd,BIO_NOCLOSE);
705 SSL_set_bio(s,bio,SSL_get_wbio(s));
706 }
707 else
708 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
709 ret=1;
710err:
711 return(ret);
712 }
713#endif
714
715
716/* return length of latest Finished message we sent, copy to 'buf' */
717size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
718 {
719 size_t ret = 0;
720
721 if (s->s3 != NULL)
722 {
723 ret = s->s3->tmp.finish_md_len;
724 if (count > ret)
725 count = ret;
726 memcpy(buf, s->s3->tmp.finish_md, count);
727 }
728 return ret;
729 }
730
731/* return length of latest Finished message we expected, copy to 'buf' */
732size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
733 {
734 size_t ret = 0;
735
736 if (s->s3 != NULL)
737 {
738 ret = s->s3->tmp.peer_finish_md_len;
739 if (count > ret)
740 count = ret;
741 memcpy(buf, s->s3->tmp.peer_finish_md, count);
742 }
743 return ret;
744 }
745
746
747int SSL_get_verify_mode(const SSL *s)
748 {
749 return(s->verify_mode);
750 }
751
752int SSL_get_verify_depth(const SSL *s)
753 {
754 return X509_VERIFY_PARAM_get_depth(s->param);
755 }
756
757int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
758 {
759 return(s->verify_callback);
760 }
761
762int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
763 {
764 return(ctx->verify_mode);
765 }
766
767int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
768 {
769 return X509_VERIFY_PARAM_get_depth(ctx->param);
770 }
771
772int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
773 {
774 return(ctx->default_verify_callback);
775 }
776
777void SSL_set_verify(SSL *s,int mode,
778 int (*callback)(int ok,X509_STORE_CTX *ctx))
779 {
780 s->verify_mode=mode;
781 if (callback != NULL)
782 s->verify_callback=callback;
783 }
784
785void SSL_set_verify_depth(SSL *s,int depth)
786 {
787 X509_VERIFY_PARAM_set_depth(s->param, depth);
788 }
789
790void SSL_set_read_ahead(SSL *s,int yes)
791 {
792 s->read_ahead=yes;
793 }
794
795int SSL_get_read_ahead(const SSL *s)
796 {
797 return(s->read_ahead);
798 }
799
800int SSL_pending(const SSL *s)
801 {
802 /* SSL_pending cannot work properly if read-ahead is enabled
803 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
804 * and it is impossible to fix since SSL_pending cannot report
805 * errors that may be observed while scanning the new data.
806 * (Note that SSL_pending() is often used as a boolean value,
807 * so we'd better not return -1.)
808 */
809 return(s->method->ssl_pending(s));
810 }
811
812X509 *SSL_get_peer_certificate(const SSL *s)
813 {
814 X509 *r;
815
816 if ((s == NULL) || (s->session == NULL))
817 r=NULL;
818 else
819 r=s->session->peer;
820
821 if (r == NULL) return(r);
822
823 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
824
825 return(r);
826 }
827
828STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
829 {
830 STACK_OF(X509) *r;
831
832 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
833 r=NULL;
834 else
835 r=s->session->sess_cert->cert_chain;
836
837 /* If we are a client, cert_chain includes the peer's own
838 * certificate; if we are a server, it does not. */
839
840 return(r);
841 }
842
843/* Now in theory, since the calling process own 't' it should be safe to
844 * modify. We need to be able to read f without being hassled */
845void SSL_copy_session_id(SSL *t,const SSL *f)
846 {
847 CERT *tmp;
848
849 /* Do we need to to SSL locking? */
850 SSL_set_session(t,SSL_get_session(f));
851
852 /* what if we are setup as SSLv2 but want to talk SSLv3 or
853 * vice-versa */
854 if (t->method != f->method)
855 {
856 t->method->ssl_free(t); /* cleanup current */
857 t->method=f->method; /* change method */
858 t->method->ssl_new(t); /* setup new */
859 }
860
861 tmp=t->cert;
862 if (f->cert != NULL)
863 {
864 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
865 t->cert=f->cert;
866 }
867 else
868 t->cert=NULL;
869 if (tmp != NULL) ssl_cert_free(tmp);
870 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
871 }
872
873/* Fix this so it checks all the valid key/cert options */
874int SSL_CTX_check_private_key(const SSL_CTX *ctx)
875 {
876 if ( (ctx == NULL) ||
877 (ctx->cert == NULL) ||
878 (ctx->cert->key->x509 == NULL))
879 {
880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
881 return(0);
882 }
883 if (ctx->cert->key->privatekey == NULL)
884 {
885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
886 return(0);
887 }
888 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
889 }
890
891/* Fix this function so that it takes an optional type parameter */
892int SSL_check_private_key(const SSL *ssl)
893 {
894 if (ssl == NULL)
895 {
896 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
897 return(0);
898 }
899 if (ssl->cert == NULL)
900 {
901 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
902 return 0;
903 }
904 if (ssl->cert->key->x509 == NULL)
905 {
906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
907 return(0);
908 }
909 if (ssl->cert->key->privatekey == NULL)
910 {
911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
912 return(0);
913 }
914 return(X509_check_private_key(ssl->cert->key->x509,
915 ssl->cert->key->privatekey));
916 }
917
918int SSL_accept(SSL *s)
919 {
920 if (s->handshake_func == 0)
921 /* Not properly initialized yet */
922 SSL_set_accept_state(s);
923
924 return(s->method->ssl_accept(s));
925 }
926
927int SSL_connect(SSL *s)
928 {
929 if (s->handshake_func == 0)
930 /* Not properly initialized yet */
931 SSL_set_connect_state(s);
932
933 return(s->method->ssl_connect(s));
934 }
935
936long SSL_get_default_timeout(const SSL *s)
937 {
938 return(s->method->get_timeout());
939 }
940
941int SSL_read(SSL *s,void *buf,int num)
942 {
943 if (s->handshake_func == 0)
944 {
945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
946 return -1;
947 }
948
949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
950 {
951 s->rwstate=SSL_NOTHING;
952 return(0);
953 }
954 return(s->method->ssl_read(s,buf,num));
955 }
956
957int SSL_peek(SSL *s,void *buf,int num)
958 {
959 if (s->handshake_func == 0)
960 {
961 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
962 return -1;
963 }
964
965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
966 {
967 return(0);
968 }
969 return(s->method->ssl_peek(s,buf,num));
970 }
971
972int SSL_write(SSL *s,const void *buf,int num)
973 {
974 if (s->handshake_func == 0)
975 {
976 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
977 return -1;
978 }
979
980 if (s->shutdown & SSL_SENT_SHUTDOWN)
981 {
982 s->rwstate=SSL_NOTHING;
983 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
984 return(-1);
985 }
986 return(s->method->ssl_write(s,buf,num));
987 }
988
989int SSL_shutdown(SSL *s)
990 {
991 /* Note that this function behaves differently from what one might
992 * expect. Return values are 0 for no success (yet),
993 * 1 for success; but calling it once is usually not enough,
994 * even if blocking I/O is used (see ssl3_shutdown).
995 */
996
997 if (s->handshake_func == 0)
998 {
999 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1000 return -1;
1001 }
1002
1003 if ((s != NULL) && !SSL_in_init(s))
1004 return(s->method->ssl_shutdown(s));
1005 else
1006 return(1);
1007 }
1008
1009int SSL_renegotiate(SSL *s)
1010 {
1011 if (s->new_session == 0)
1012 {
1013 s->new_session=1;
1014 }
1015 return(s->method->ssl_renegotiate(s));
1016 }
1017
1018int SSL_renegotiate_pending(SSL *s)
1019 {
1020 /* becomes true when negotiation is requested;
1021 * false again once a handshake has finished */
1022 return (s->new_session != 0);
1023 }
1024
1025long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1026 {
1027 long l;
1028
1029 switch (cmd)
1030 {
1031 case SSL_CTRL_GET_READ_AHEAD:
1032 return(s->read_ahead);
1033 case SSL_CTRL_SET_READ_AHEAD:
1034 l=s->read_ahead;
1035 s->read_ahead=larg;
1036 return(l);
1037
1038 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1039 s->msg_callback_arg = parg;
1040 return 1;
1041
1042 case SSL_CTRL_OPTIONS:
1043 return(s->options|=larg);
1044 case SSL_CTRL_CLEAR_OPTIONS:
1045 return(s->options&=~larg);
1046 case SSL_CTRL_MODE:
1047 return(s->mode|=larg);
1048 case SSL_CTRL_CLEAR_MODE:
1049 return(s->mode &=~larg);
1050 case SSL_CTRL_GET_MAX_CERT_LIST:
1051 return(s->max_cert_list);
1052 case SSL_CTRL_SET_MAX_CERT_LIST:
1053 l=s->max_cert_list;
1054 s->max_cert_list=larg;
1055 return(l);
1056 case SSL_CTRL_SET_MTU:
1057 if (SSL_version(s) == DTLS1_VERSION ||
1058 SSL_version(s) == DTLS1_BAD_VER)
1059 {
1060 s->d1->mtu = larg;
1061 return larg;
1062 }
1063 return 0;
1064 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1065 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1066 return 0;
1067 s->max_send_fragment = larg;
1068 return 1;
1069 case SSL_CTRL_GET_RI_SUPPORT:
1070 if (s->s3)
1071 return s->s3->send_connection_binding;
1072 else return 0;
1073 default:
1074 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1075 }
1076 }
1077
1078long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1079 {
1080 switch(cmd)
1081 {
1082 case SSL_CTRL_SET_MSG_CALLBACK:
1083 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1084 return 1;
1085
1086 default:
1087 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1088 }
1089 }
1090
1091LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1092 {
1093 return ctx->sessions;
1094 }
1095
1096long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1097 {
1098 long l;
1099
1100 switch (cmd)
1101 {
1102 case SSL_CTRL_GET_READ_AHEAD:
1103 return(ctx->read_ahead);
1104 case SSL_CTRL_SET_READ_AHEAD:
1105 l=ctx->read_ahead;
1106 ctx->read_ahead=larg;
1107 return(l);
1108
1109 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1110 ctx->msg_callback_arg = parg;
1111 return 1;
1112
1113 case SSL_CTRL_GET_MAX_CERT_LIST:
1114 return(ctx->max_cert_list);
1115 case SSL_CTRL_SET_MAX_CERT_LIST:
1116 l=ctx->max_cert_list;
1117 ctx->max_cert_list=larg;
1118 return(l);
1119
1120 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1121 l=ctx->session_cache_size;
1122 ctx->session_cache_size=larg;
1123 return(l);
1124 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1125 return(ctx->session_cache_size);
1126 case SSL_CTRL_SET_SESS_CACHE_MODE:
1127 l=ctx->session_cache_mode;
1128 ctx->session_cache_mode=larg;
1129 return(l);
1130 case SSL_CTRL_GET_SESS_CACHE_MODE:
1131 return(ctx->session_cache_mode);
1132
1133 case SSL_CTRL_SESS_NUMBER:
1134 return(lh_SSL_SESSION_num_items(ctx->sessions));
1135 case SSL_CTRL_SESS_CONNECT:
1136 return(ctx->stats.sess_connect);
1137 case SSL_CTRL_SESS_CONNECT_GOOD:
1138 return(ctx->stats.sess_connect_good);
1139 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1140 return(ctx->stats.sess_connect_renegotiate);
1141 case SSL_CTRL_SESS_ACCEPT:
1142 return(ctx->stats.sess_accept);
1143 case SSL_CTRL_SESS_ACCEPT_GOOD:
1144 return(ctx->stats.sess_accept_good);
1145 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1146 return(ctx->stats.sess_accept_renegotiate);
1147 case SSL_CTRL_SESS_HIT:
1148 return(ctx->stats.sess_hit);
1149 case SSL_CTRL_SESS_CB_HIT:
1150 return(ctx->stats.sess_cb_hit);
1151 case SSL_CTRL_SESS_MISSES:
1152 return(ctx->stats.sess_miss);
1153 case SSL_CTRL_SESS_TIMEOUTS:
1154 return(ctx->stats.sess_timeout);
1155 case SSL_CTRL_SESS_CACHE_FULL:
1156 return(ctx->stats.sess_cache_full);
1157 case SSL_CTRL_OPTIONS:
1158 return(ctx->options|=larg);
1159 case SSL_CTRL_CLEAR_OPTIONS:
1160 return(ctx->options&=~larg);
1161 case SSL_CTRL_MODE:
1162 return(ctx->mode|=larg);
1163 case SSL_CTRL_CLEAR_MODE:
1164 return(ctx->mode&=~larg);
1165 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1166 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1167 return 0;
1168 ctx->max_send_fragment = larg;
1169 return 1;
1170 default:
1171 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1172 }
1173 }
1174
1175long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1176 {
1177 switch(cmd)
1178 {
1179 case SSL_CTRL_SET_MSG_CALLBACK:
1180 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1181 return 1;
1182
1183 default:
1184 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1185 }
1186 }
1187
1188int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1189 {
1190 long l;
1191
1192 l=a->id-b->id;
1193 if (l == 0L)
1194 return(0);
1195 else
1196 return((l > 0)?1:-1);
1197 }
1198
1199int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1200 const SSL_CIPHER * const *bp)
1201 {
1202 long l;
1203
1204 l=(*ap)->id-(*bp)->id;
1205 if (l == 0L)
1206 return(0);
1207 else
1208 return((l > 0)?1:-1);
1209 }
1210
1211/** return a STACK of the ciphers available for the SSL and in order of
1212 * preference */
1213STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1214 {
1215 if (s != NULL)
1216 {
1217 if (s->cipher_list != NULL)
1218 {
1219 return(s->cipher_list);
1220 }
1221 else if ((s->ctx != NULL) &&
1222 (s->ctx->cipher_list != NULL))
1223 {
1224 return(s->ctx->cipher_list);
1225 }
1226 }
1227 return(NULL);
1228 }
1229
1230/** return a STACK of the ciphers available for the SSL and in order of
1231 * algorithm id */
1232STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1233 {
1234 if (s != NULL)
1235 {
1236 if (s->cipher_list_by_id != NULL)
1237 {
1238 return(s->cipher_list_by_id);
1239 }
1240 else if ((s->ctx != NULL) &&
1241 (s->ctx->cipher_list_by_id != NULL))
1242 {
1243 return(s->ctx->cipher_list_by_id);
1244 }
1245 }
1246 return(NULL);
1247 }
1248
1249/** The old interface to get the same thing as SSL_get_ciphers() */
1250const char *SSL_get_cipher_list(const SSL *s,int n)
1251 {
1252 SSL_CIPHER *c;
1253 STACK_OF(SSL_CIPHER) *sk;
1254
1255 if (s == NULL) return(NULL);
1256 sk=SSL_get_ciphers(s);
1257 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1258 return(NULL);
1259 c=sk_SSL_CIPHER_value(sk,n);
1260 if (c == NULL) return(NULL);
1261 return(c->name);
1262 }
1263
1264/** specify the ciphers to be used by default by the SSL_CTX */
1265int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1266 {
1267 STACK_OF(SSL_CIPHER) *sk;
1268
1269 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1270 &ctx->cipher_list_by_id,str);
1271 /* ssl_create_cipher_list may return an empty stack if it
1272 * was unable to find a cipher matching the given rule string
1273 * (for example if the rule string specifies a cipher which
1274 * has been disabled). This is not an error as far as
1275 * ssl_create_cipher_list is concerned, and hence
1276 * ctx->cipher_list and ctx->cipher_list_by_id has been
1277 * updated. */
1278 if (sk == NULL)
1279 return 0;
1280 else if (sk_SSL_CIPHER_num(sk) == 0)
1281 {
1282 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1283 return 0;
1284 }
1285 return 1;
1286 }
1287
1288/** specify the ciphers to be used by the SSL */
1289int SSL_set_cipher_list(SSL *s,const char *str)
1290 {
1291 STACK_OF(SSL_CIPHER) *sk;
1292
1293 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1294 &s->cipher_list_by_id,str);
1295 /* see comment in SSL_CTX_set_cipher_list */
1296 if (sk == NULL)
1297 return 0;
1298 else if (sk_SSL_CIPHER_num(sk) == 0)
1299 {
1300 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1301 return 0;
1302 }
1303 return 1;
1304 }
1305
1306/* works well for SSLv2, not so good for SSLv3 */
1307char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1308 {
1309 char *end;
1310 STACK_OF(SSL_CIPHER) *sk;
1311 SSL_CIPHER *c;
1312 size_t curlen = 0;
1313 int i;
1314
1315 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1316 (len < 2))
1317 return(NULL);
1318
1319 sk=s->session->ciphers;
1320 buf[0] = '\0';
1321 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1322 {
1323 c=sk_SSL_CIPHER_value(sk,i);
1324 end = buf + curlen;
1325 if (strlcat(buf, c->name, len) >= len ||
1326 (curlen = strlcat(buf, ":", len)) >= len)
1327 {
1328 /* remove truncated cipher from list */
1329 *end = '\0';
1330 break;
1331 }
1332 }
1333 /* remove trailing colon */
1334 if ((end = strrchr(buf, ':')) != NULL)
1335 *end = '\0';
1336 return(buf);
1337 }
1338
1339int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1340 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1341 {
1342 int i,j=0;
1343 SSL_CIPHER *c;
1344 unsigned char *q;
1345#ifndef OPENSSL_NO_KRB5
1346 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1347#endif /* OPENSSL_NO_KRB5 */
1348
1349 if (sk == NULL) return(0);
1350 q=p;
1351
1352 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1353 {
1354 c=sk_SSL_CIPHER_value(sk,i);
1355#ifndef OPENSSL_NO_KRB5
1356 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1357 nokrb5)
1358 continue;
1359#endif /* OPENSSL_NO_KRB5 */
1360#ifndef OPENSSL_NO_PSK
1361 /* with PSK there must be client callback set */
1362 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1363 s->psk_client_callback == NULL)
1364 continue;
1365#endif /* OPENSSL_NO_PSK */
1366 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1367 p+=j;
1368 }
1369 /* If p == q, no ciphers and caller indicates an error. Otherwise
1370 * add SCSV if not renegotiating.
1371 */
1372 if (p != q && !s->new_session)
1373 {
1374 static SSL_CIPHER scsv =
1375 {
1376 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1377 };
1378 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1379 p+=j;
1380#ifdef OPENSSL_RI_DEBUG
1381 fprintf(stderr, "SCSV sent by client\n");
1382#endif
1383 }
1384
1385 return(p-q);
1386 }
1387
1388STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1389 STACK_OF(SSL_CIPHER) **skp)
1390 {
1391 const SSL_CIPHER *c;
1392 STACK_OF(SSL_CIPHER) *sk;
1393 int i,n;
1394 if (s->s3)
1395 s->s3->send_connection_binding = 0;
1396
1397 n=ssl_put_cipher_by_char(s,NULL,NULL);
1398 if ((num%n) != 0)
1399 {
1400 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1401 return(NULL);
1402 }
1403 if ((skp == NULL) || (*skp == NULL))
1404 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1405 else
1406 {
1407 sk= *skp;
1408 sk_SSL_CIPHER_zero(sk);
1409 }
1410
1411 for (i=0; i<num; i+=n)
1412 {
1413 /* Check for SCSV */
1414 if (s->s3 && (n != 3 || !p[0]) &&
1415 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1416 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1417 {
1418 /* SCSV fatal if renegotiating */
1419 if (s->new_session)
1420 {
1421 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1422 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1423 goto err;
1424 }
1425 s->s3->send_connection_binding = 1;
1426 p += n;
1427#ifdef OPENSSL_RI_DEBUG
1428 fprintf(stderr, "SCSV received by server\n");
1429#endif
1430 continue;
1431 }
1432
1433 c=ssl_get_cipher_by_char(s,p);
1434 p+=n;
1435 if (c != NULL)
1436 {
1437 if (!sk_SSL_CIPHER_push(sk,c))
1438 {
1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1440 goto err;
1441 }
1442 }
1443 }
1444
1445 if (skp != NULL)
1446 *skp=sk;
1447 return(sk);
1448err:
1449 if ((skp == NULL) || (*skp == NULL))
1450 sk_SSL_CIPHER_free(sk);
1451 return(NULL);
1452 }
1453
1454
1455#ifndef OPENSSL_NO_TLSEXT
1456/** return a servername extension value if provided in Client Hello, or NULL.
1457 * So far, only host_name types are defined (RFC 3546).
1458 */
1459
1460const char *SSL_get_servername(const SSL *s, const int type)
1461 {
1462 if (type != TLSEXT_NAMETYPE_host_name)
1463 return NULL;
1464
1465 return s->session && !s->tlsext_hostname ?
1466 s->session->tlsext_hostname :
1467 s->tlsext_hostname;
1468 }
1469
1470int SSL_get_servername_type(const SSL *s)
1471 {
1472 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1473 return TLSEXT_NAMETYPE_host_name;
1474 return -1;
1475 }
1476#endif
1477
1478static unsigned long ssl_session_hash(const SSL_SESSION *a)
1479 {
1480 unsigned long l;
1481
1482 l=(unsigned long)
1483 ((unsigned int) a->session_id[0] )|
1484 ((unsigned int) a->session_id[1]<< 8L)|
1485 ((unsigned long)a->session_id[2]<<16L)|
1486 ((unsigned long)a->session_id[3]<<24L);
1487 return(l);
1488 }
1489
1490/* NB: If this function (or indeed the hash function which uses a sort of
1491 * coarser function than this one) is changed, ensure
1492 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1493 * able to construct an SSL_SESSION that will collide with any existing session
1494 * with a matching session ID. */
1495static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1496 {
1497 if (a->ssl_version != b->ssl_version)
1498 return(1);
1499 if (a->session_id_length != b->session_id_length)
1500 return(1);
1501 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1502 }
1503
1504/* These wrapper functions should remain rather than redeclaring
1505 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1506 * variable. The reason is that the functions aren't static, they're exposed via
1507 * ssl.h. */
1508static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1509static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1510
1511SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1512 {
1513 SSL_CTX *ret=NULL;
1514
1515 if (meth == NULL)
1516 {
1517 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1518 return(NULL);
1519 }
1520
1521 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1522 {
1523 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1524 goto err;
1525 }
1526 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1527 if (ret == NULL)
1528 goto err;
1529
1530 memset(ret,0,sizeof(SSL_CTX));
1531
1532 ret->method=meth;
1533
1534 ret->cert_store=NULL;
1535 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1536 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1537 ret->session_cache_head=NULL;
1538 ret->session_cache_tail=NULL;
1539
1540 /* We take the system default */
1541 ret->session_timeout=meth->get_timeout();
1542
1543 ret->new_session_cb=0;
1544 ret->remove_session_cb=0;
1545 ret->get_session_cb=0;
1546 ret->generate_session_id=0;
1547
1548 memset((char *)&ret->stats,0,sizeof(ret->stats));
1549
1550 ret->references=1;
1551 ret->quiet_shutdown=0;
1552
1553/* ret->cipher=NULL;*/
1554/* ret->s2->challenge=NULL;
1555 ret->master_key=NULL;
1556 ret->key_arg=NULL;
1557 ret->s2->conn_id=NULL; */
1558
1559 ret->info_callback=NULL;
1560
1561 ret->app_verify_callback=0;
1562 ret->app_verify_arg=NULL;
1563
1564 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1565 ret->read_ahead=0;
1566 ret->msg_callback=0;
1567 ret->msg_callback_arg=NULL;
1568 ret->verify_mode=SSL_VERIFY_NONE;
1569#if 0
1570 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1571#endif
1572 ret->sid_ctx_length=0;
1573 ret->default_verify_callback=NULL;
1574 if ((ret->cert=ssl_cert_new()) == NULL)
1575 goto err;
1576
1577 ret->default_passwd_callback=0;
1578 ret->default_passwd_callback_userdata=NULL;
1579 ret->client_cert_cb=0;
1580 ret->app_gen_cookie_cb=0;
1581 ret->app_verify_cookie_cb=0;
1582
1583 ret->sessions=lh_SSL_SESSION_new();
1584 if (ret->sessions == NULL) goto err;
1585 ret->cert_store=X509_STORE_new();
1586 if (ret->cert_store == NULL) goto err;
1587
1588 ssl_create_cipher_list(ret->method,
1589 &ret->cipher_list,&ret->cipher_list_by_id,
1590 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1591 if (ret->cipher_list == NULL
1592 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1593 {
1594 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1595 goto err2;
1596 }
1597
1598 ret->param = X509_VERIFY_PARAM_new();
1599 if (!ret->param)
1600 goto err;
1601
1602 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1603 {
1604 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1605 goto err2;
1606 }
1607 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1608 {
1609 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1610 goto err2;
1611 }
1612 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1613 {
1614 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1615 goto err2;
1616 }
1617
1618 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1619 goto err;
1620
1621 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1622
1623 ret->extra_certs=NULL;
1624 ret->comp_methods=SSL_COMP_get_compression_methods();
1625
1626 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1627
1628#ifndef OPENSSL_NO_TLSEXT
1629 ret->tlsext_servername_callback = 0;
1630 ret->tlsext_servername_arg = NULL;
1631 /* Setup RFC4507 ticket keys */
1632 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1633 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1634 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1635 ret->options |= SSL_OP_NO_TICKET;
1636
1637 ret->tlsext_status_cb = 0;
1638 ret->tlsext_status_arg = NULL;
1639
1640#endif
1641#ifndef OPENSSL_NO_PSK
1642 ret->psk_identity_hint=NULL;
1643 ret->psk_client_callback=NULL;
1644 ret->psk_server_callback=NULL;
1645#endif
1646#ifndef OPENSSL_NO_BUF_FREELISTS
1647 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1648 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1649 if (!ret->rbuf_freelist)
1650 goto err;
1651 ret->rbuf_freelist->chunklen = 0;
1652 ret->rbuf_freelist->len = 0;
1653 ret->rbuf_freelist->head = NULL;
1654 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1655 if (!ret->wbuf_freelist)
1656 {
1657 OPENSSL_free(ret->rbuf_freelist);
1658 goto err;
1659 }
1660 ret->wbuf_freelist->chunklen = 0;
1661 ret->wbuf_freelist->len = 0;
1662 ret->wbuf_freelist->head = NULL;
1663#endif
1664#ifndef OPENSSL_NO_ENGINE
1665 ret->client_cert_engine = NULL;
1666#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1667#define eng_strx(x) #x
1668#define eng_str(x) eng_strx(x)
1669 /* Use specific client engine automatically... ignore errors */
1670 {
1671 ENGINE *eng;
1672 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1673 if (!eng)
1674 {
1675 ERR_clear_error();
1676 ENGINE_load_builtin_engines();
1677 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1678 }
1679 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1680 ERR_clear_error();
1681 }
1682#endif
1683#endif
1684 /* Default is to connect to non-RI servers. When RI is more widely
1685 * deployed might change this.
1686 */
1687 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1688
1689 return(ret);
1690err:
1691 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1692err2:
1693 if (ret != NULL) SSL_CTX_free(ret);
1694 return(NULL);
1695 }
1696
1697#if 0
1698static void SSL_COMP_free(SSL_COMP *comp)
1699 { OPENSSL_free(comp); }
1700#endif
1701
1702#ifndef OPENSSL_NO_BUF_FREELISTS
1703static void
1704ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1705 {
1706 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1707 for (ent = list->head; ent; ent = next)
1708 {
1709 next = ent->next;
1710 OPENSSL_free(ent);
1711 }
1712 OPENSSL_free(list);
1713 }
1714#endif
1715
1716void SSL_CTX_free(SSL_CTX *a)
1717 {
1718 int i;
1719
1720 if (a == NULL) return;
1721
1722 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1723#ifdef REF_PRINT
1724 REF_PRINT("SSL_CTX",a);
1725#endif
1726 if (i > 0) return;
1727#ifdef REF_CHECK
1728 if (i < 0)
1729 {
1730 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1731 abort(); /* ok */
1732 }
1733#endif
1734
1735 if (a->param)
1736 X509_VERIFY_PARAM_free(a->param);
1737
1738 /*
1739 * Free internal session cache. However: the remove_cb() may reference
1740 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1741 * after the sessions were flushed.
1742 * As the ex_data handling routines might also touch the session cache,
1743 * the most secure solution seems to be: empty (flush) the cache, then
1744 * free ex_data, then finally free the cache.
1745 * (See ticket [openssl.org #212].)
1746 */
1747 if (a->sessions != NULL)
1748 SSL_CTX_flush_sessions(a,0);
1749
1750 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1751
1752 if (a->sessions != NULL)
1753 lh_SSL_SESSION_free(a->sessions);
1754
1755 if (a->cert_store != NULL)
1756 X509_STORE_free(a->cert_store);
1757 if (a->cipher_list != NULL)
1758 sk_SSL_CIPHER_free(a->cipher_list);
1759 if (a->cipher_list_by_id != NULL)
1760 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1761 if (a->cert != NULL)
1762 ssl_cert_free(a->cert);
1763 if (a->client_CA != NULL)
1764 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1765 if (a->extra_certs != NULL)
1766 sk_X509_pop_free(a->extra_certs,X509_free);
1767#if 0 /* This should never be done, since it removes a global database */
1768 if (a->comp_methods != NULL)
1769 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1770#else
1771 a->comp_methods = NULL;
1772#endif
1773
1774#ifndef OPENSSL_NO_PSK
1775 if (a->psk_identity_hint)
1776 OPENSSL_free(a->psk_identity_hint);
1777#endif
1778#ifndef OPENSSL_NO_ENGINE
1779 if (a->client_cert_engine)
1780 ENGINE_finish(a->client_cert_engine);
1781#endif
1782
1783#ifndef OPENSSL_NO_BUF_FREELISTS
1784 if (a->wbuf_freelist)
1785 ssl_buf_freelist_free(a->wbuf_freelist);
1786 if (a->rbuf_freelist)
1787 ssl_buf_freelist_free(a->rbuf_freelist);
1788#endif
1789
1790 OPENSSL_free(a);
1791 }
1792
1793void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1794 {
1795 ctx->default_passwd_callback=cb;
1796 }
1797
1798void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1799 {
1800 ctx->default_passwd_callback_userdata=u;
1801 }
1802
1803void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1804 {
1805 ctx->app_verify_callback=cb;
1806 ctx->app_verify_arg=arg;
1807 }
1808
1809void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1810 {
1811 ctx->verify_mode=mode;
1812 ctx->default_verify_callback=cb;
1813 }
1814
1815void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1816 {
1817 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1818 }
1819
1820void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1821 {
1822 CERT_PKEY *cpk;
1823 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1824 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1825 int rsa_tmp_export,dh_tmp_export,kl;
1826 unsigned long mask_k,mask_a,emask_k,emask_a;
1827 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1828#ifndef OPENSSL_NO_ECDH
1829 int have_ecdh_tmp;
1830#endif
1831 X509 *x = NULL;
1832 EVP_PKEY *ecc_pkey = NULL;
1833 int signature_nid = 0;
1834
1835 if (c == NULL) return;
1836
1837 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1838
1839#ifndef OPENSSL_NO_RSA
1840 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1841 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1842 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1843#else
1844 rsa_tmp=rsa_tmp_export=0;
1845#endif
1846#ifndef OPENSSL_NO_DH
1847 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1848 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1849 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1850#else
1851 dh_tmp=dh_tmp_export=0;
1852#endif
1853
1854#ifndef OPENSSL_NO_ECDH
1855 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1856#endif
1857 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1858 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1859 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1860 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1861 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1862 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1863 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1864 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1865 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1866 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1867 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1868/* FIX THIS EAY EAY EAY */
1869 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1870 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1871 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1872 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1873 mask_k=0;
1874 mask_a=0;
1875 emask_k=0;
1876 emask_a=0;
1877
1878
1879
1880#ifdef CIPHER_DEBUG
1881 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1882 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1883 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1884#endif
1885
1886 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1887 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1888 mask_k |= SSL_kGOST;
1889 mask_a |= SSL_aGOST01;
1890 }
1891 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1892 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1893 mask_k |= SSL_kGOST;
1894 mask_a |= SSL_aGOST94;
1895 }
1896
1897 if (rsa_enc || (rsa_tmp && rsa_sign))
1898 mask_k|=SSL_kRSA;
1899 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1900 emask_k|=SSL_kRSA;
1901
1902#if 0
1903 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1904 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1905 (rsa_enc || rsa_sign || dsa_sign))
1906 mask_k|=SSL_kEDH;
1907 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1908 (rsa_enc || rsa_sign || dsa_sign))
1909 emask_k|=SSL_kEDH;
1910#endif
1911
1912 if (dh_tmp_export)
1913 emask_k|=SSL_kEDH;
1914
1915 if (dh_tmp)
1916 mask_k|=SSL_kEDH;
1917
1918 if (dh_rsa) mask_k|=SSL_kDHr;
1919 if (dh_rsa_export) emask_k|=SSL_kDHr;
1920
1921 if (dh_dsa) mask_k|=SSL_kDHd;
1922 if (dh_dsa_export) emask_k|=SSL_kDHd;
1923
1924 if (rsa_enc || rsa_sign)
1925 {
1926 mask_a|=SSL_aRSA;
1927 emask_a|=SSL_aRSA;
1928 }
1929
1930 if (dsa_sign)
1931 {
1932 mask_a|=SSL_aDSS;
1933 emask_a|=SSL_aDSS;
1934 }
1935
1936 mask_a|=SSL_aNULL;
1937 emask_a|=SSL_aNULL;
1938
1939#ifndef OPENSSL_NO_KRB5
1940 mask_k|=SSL_kKRB5;
1941 mask_a|=SSL_aKRB5;
1942 emask_k|=SSL_kKRB5;
1943 emask_a|=SSL_aKRB5;
1944#endif
1945
1946 /* An ECC certificate may be usable for ECDH and/or
1947 * ECDSA cipher suites depending on the key usage extension.
1948 */
1949 if (have_ecc_cert)
1950 {
1951 /* This call populates extension flags (ex_flags) */
1952 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1953 X509_check_purpose(x, -1, 0);
1954 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1955 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1956 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1957 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1958 ecc_pkey = X509_get_pubkey(x);
1959 ecc_pkey_size = (ecc_pkey != NULL) ?
1960 EVP_PKEY_bits(ecc_pkey) : 0;
1961 EVP_PKEY_free(ecc_pkey);
1962 if ((x->sig_alg) && (x->sig_alg->algorithm))
1963 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1964#ifndef OPENSSL_NO_ECDH
1965 if (ecdh_ok)
1966 {
1967 const char *sig = OBJ_nid2ln(signature_nid);
1968 if (sig == NULL)
1969 {
1970 ERR_clear_error();
1971 sig = "unknown";
1972 }
1973
1974 if (strstr(sig, "WithRSA"))
1975 {
1976 mask_k|=SSL_kECDHr;
1977 mask_a|=SSL_aECDH;
1978 if (ecc_pkey_size <= 163)
1979 {
1980 emask_k|=SSL_kECDHr;
1981 emask_a|=SSL_aECDH;
1982 }
1983 }
1984
1985 if (signature_nid == NID_ecdsa_with_SHA1)
1986 {
1987 mask_k|=SSL_kECDHe;
1988 mask_a|=SSL_aECDH;
1989 if (ecc_pkey_size <= 163)
1990 {
1991 emask_k|=SSL_kECDHe;
1992 emask_a|=SSL_aECDH;
1993 }
1994 }
1995 }
1996#endif
1997#ifndef OPENSSL_NO_ECDSA
1998 if (ecdsa_ok)
1999 {
2000 mask_a|=SSL_aECDSA;
2001 emask_a|=SSL_aECDSA;
2002 }
2003#endif
2004 }
2005
2006#ifndef OPENSSL_NO_ECDH
2007 if (have_ecdh_tmp)
2008 {
2009 mask_k|=SSL_kEECDH;
2010 emask_k|=SSL_kEECDH;
2011 }
2012#endif
2013
2014#ifndef OPENSSL_NO_PSK
2015 mask_k |= SSL_kPSK;
2016 mask_a |= SSL_aPSK;
2017 emask_k |= SSL_kPSK;
2018 emask_a |= SSL_aPSK;
2019#endif
2020
2021 c->mask_k=mask_k;
2022 c->mask_a=mask_a;
2023 c->export_mask_k=emask_k;
2024 c->export_mask_a=emask_a;
2025 c->valid=1;
2026 }
2027
2028/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2029#define ku_reject(x, usage) \
2030 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2031
2032#ifndef OPENSSL_NO_EC
2033
2034int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
2035 {
2036 unsigned long alg_k, alg_a;
2037 EVP_PKEY *pkey = NULL;
2038 int keysize = 0;
2039 int signature_nid = 0;
2040
2041 alg_k = cs->algorithm_mkey;
2042 alg_a = cs->algorithm_auth;
2043
2044 if (SSL_C_IS_EXPORT(cs))
2045 {
2046 /* ECDH key length in export ciphers must be <= 163 bits */
2047 pkey = X509_get_pubkey(x);
2048 if (pkey == NULL) return 0;
2049 keysize = EVP_PKEY_bits(pkey);
2050 EVP_PKEY_free(pkey);
2051 if (keysize > 163) return 0;
2052 }
2053
2054 /* This call populates the ex_flags field correctly */
2055 X509_check_purpose(x, -1, 0);
2056 if ((x->sig_alg) && (x->sig_alg->algorithm))
2057 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2058 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2059 {
2060 /* key usage, if present, must allow key agreement */
2061 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2062 {
2063 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2064 return 0;
2065 }
2066 if (alg_k & SSL_kECDHe)
2067 {
2068 /* signature alg must be ECDSA */
2069 if (signature_nid != NID_ecdsa_with_SHA1)
2070 {
2071 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2072 return 0;
2073 }
2074 }
2075 if (alg_k & SSL_kECDHr)
2076 {
2077 /* signature alg must be RSA */
2078
2079 const char *sig = OBJ_nid2ln(signature_nid);
2080 if (sig == NULL)
2081 {
2082 ERR_clear_error();
2083 sig = "unknown";
2084 }
2085 if (strstr(sig, "WithRSA") == NULL)
2086 {
2087 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2088 return 0;
2089 }
2090 }
2091 }
2092 if (alg_a & SSL_aECDSA)
2093 {
2094 /* key usage, if present, must allow signing */
2095 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2096 {
2097 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2098 return 0;
2099 }
2100 }
2101
2102 return 1; /* all checks are ok */
2103 }
2104
2105#endif
2106
2107/* THIS NEEDS CLEANING UP */
2108X509 *ssl_get_server_send_cert(SSL *s)
2109 {
2110 unsigned long alg_k,alg_a,mask_k,mask_a;
2111 CERT *c;
2112 int i,is_export;
2113
2114 c=s->cert;
2115 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2116 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
2117 if (is_export)
2118 {
2119 mask_k = c->export_mask_k;
2120 mask_a = c->export_mask_a;
2121 }
2122 else
2123 {
2124 mask_k = c->mask_k;
2125 mask_a = c->mask_a;
2126 }
2127
2128 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2129 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2130
2131 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2132 {
2133 /* we don't need to look at SSL_kEECDH
2134 * since no certificate is needed for
2135 * anon ECDH and for authenticated
2136 * EECDH, the check for the auth
2137 * algorithm will set i correctly
2138 * NOTE: For ECDH-RSA, we need an ECC
2139 * not an RSA cert but for EECDH-RSA
2140 * we need an RSA cert. Placing the
2141 * checks for SSL_kECDH before RSA
2142 * checks ensures the correct cert is chosen.
2143 */
2144 i=SSL_PKEY_ECC;
2145 }
2146 else if (alg_a & SSL_aECDSA)
2147 {
2148 i=SSL_PKEY_ECC;
2149 }
2150 else if (alg_k & SSL_kDHr)
2151 i=SSL_PKEY_DH_RSA;
2152 else if (alg_k & SSL_kDHd)
2153 i=SSL_PKEY_DH_DSA;
2154 else if (alg_a & SSL_aDSS)
2155 i=SSL_PKEY_DSA_SIGN;
2156 else if (alg_a & SSL_aRSA)
2157 {
2158 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2159 i=SSL_PKEY_RSA_SIGN;
2160 else
2161 i=SSL_PKEY_RSA_ENC;
2162 }
2163 else if (alg_a & SSL_aKRB5)
2164 {
2165 /* VRS something else here? */
2166 return(NULL);
2167 }
2168 else if (alg_a & SSL_aGOST94)
2169 i=SSL_PKEY_GOST94;
2170 else if (alg_a & SSL_aGOST01)
2171 i=SSL_PKEY_GOST01;
2172 else /* if (alg_a & SSL_aNULL) */
2173 {
2174 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2175 return(NULL);
2176 }
2177 if (c->pkeys[i].x509 == NULL) return(NULL);
2178
2179 return(c->pkeys[i].x509);
2180 }
2181
2182EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2183 {
2184 unsigned long alg_a;
2185 CERT *c;
2186
2187 alg_a = cipher->algorithm_auth;
2188 c=s->cert;
2189
2190 if ((alg_a & SSL_aDSS) &&
2191 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2192 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2193 else if (alg_a & SSL_aRSA)
2194 {
2195 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2196 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2197 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2198 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2199 else
2200 return(NULL);
2201 }
2202 else if ((alg_a & SSL_aECDSA) &&
2203 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2204 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2205 else /* if (alg_a & SSL_aNULL) */
2206 {
2207 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2208 return(NULL);
2209 }
2210 }
2211
2212void ssl_update_cache(SSL *s,int mode)
2213 {
2214 int i;
2215
2216 /* If the session_id_length is 0, we are not supposed to cache it,
2217 * and it would be rather hard to do anyway :-) */
2218 if (s->session->session_id_length == 0) return;
2219
2220 i=s->session_ctx->session_cache_mode;
2221 if ((i & mode) && (!s->hit)
2222 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2223 || SSL_CTX_add_session(s->session_ctx,s->session))
2224 && (s->session_ctx->new_session_cb != NULL))
2225 {
2226 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2227 if (!s->session_ctx->new_session_cb(s,s->session))
2228 SSL_SESSION_free(s->session);
2229 }
2230
2231 /* auto flush every 255 connections */
2232 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2233 ((i & mode) == mode))
2234 {
2235 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2236 ?s->session_ctx->stats.sess_connect_good
2237 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2238 {
2239 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2240 }
2241 }
2242 }
2243
2244const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2245 {
2246 return(s->method);
2247 }
2248
2249int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2250 {
2251 int conn= -1;
2252 int ret=1;
2253
2254 if (s->method != meth)
2255 {
2256 if (s->handshake_func != NULL)
2257 conn=(s->handshake_func == s->method->ssl_connect);
2258
2259 if (s->method->version == meth->version)
2260 s->method=meth;
2261 else
2262 {
2263 s->method->ssl_free(s);
2264 s->method=meth;
2265 ret=s->method->ssl_new(s);
2266 }
2267
2268 if (conn == 1)
2269 s->handshake_func=meth->ssl_connect;
2270 else if (conn == 0)
2271 s->handshake_func=meth->ssl_accept;
2272 }
2273 return(ret);
2274 }
2275
2276int SSL_get_error(const SSL *s,int i)
2277 {
2278 int reason;
2279 unsigned long l;
2280 BIO *bio;
2281
2282 if (i > 0) return(SSL_ERROR_NONE);
2283
2284 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2285 * etc, where we do encode the error */
2286 if ((l=ERR_peek_error()) != 0)
2287 {
2288 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2289 return(SSL_ERROR_SYSCALL);
2290 else
2291 return(SSL_ERROR_SSL);
2292 }
2293
2294 if ((i < 0) && SSL_want_read(s))
2295 {
2296 bio=SSL_get_rbio(s);
2297 if (BIO_should_read(bio))
2298 return(SSL_ERROR_WANT_READ);
2299 else if (BIO_should_write(bio))
2300 /* This one doesn't make too much sense ... We never try
2301 * to write to the rbio, and an application program where
2302 * rbio and wbio are separate couldn't even know what it
2303 * should wait for.
2304 * However if we ever set s->rwstate incorrectly
2305 * (so that we have SSL_want_read(s) instead of
2306 * SSL_want_write(s)) and rbio and wbio *are* the same,
2307 * this test works around that bug; so it might be safer
2308 * to keep it. */
2309 return(SSL_ERROR_WANT_WRITE);
2310 else if (BIO_should_io_special(bio))
2311 {
2312 reason=BIO_get_retry_reason(bio);
2313 if (reason == BIO_RR_CONNECT)
2314 return(SSL_ERROR_WANT_CONNECT);
2315 else if (reason == BIO_RR_ACCEPT)
2316 return(SSL_ERROR_WANT_ACCEPT);
2317 else
2318 return(SSL_ERROR_SYSCALL); /* unknown */
2319 }
2320 }
2321
2322 if ((i < 0) && SSL_want_write(s))
2323 {
2324 bio=SSL_get_wbio(s);
2325 if (BIO_should_write(bio))
2326 return(SSL_ERROR_WANT_WRITE);
2327 else if (BIO_should_read(bio))
2328 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2329 return(SSL_ERROR_WANT_READ);
2330 else if (BIO_should_io_special(bio))
2331 {
2332 reason=BIO_get_retry_reason(bio);
2333 if (reason == BIO_RR_CONNECT)
2334 return(SSL_ERROR_WANT_CONNECT);
2335 else if (reason == BIO_RR_ACCEPT)
2336 return(SSL_ERROR_WANT_ACCEPT);
2337 else
2338 return(SSL_ERROR_SYSCALL);
2339 }
2340 }
2341 if ((i < 0) && SSL_want_x509_lookup(s))
2342 {
2343 return(SSL_ERROR_WANT_X509_LOOKUP);
2344 }
2345
2346 if (i == 0)
2347 {
2348 if (s->version == SSL2_VERSION)
2349 {
2350 /* assume it is the socket being closed */
2351 return(SSL_ERROR_ZERO_RETURN);
2352 }
2353 else
2354 {
2355 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2356 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2357 return(SSL_ERROR_ZERO_RETURN);
2358 }
2359 }
2360 return(SSL_ERROR_SYSCALL);
2361 }
2362
2363int SSL_do_handshake(SSL *s)
2364 {
2365 int ret=1;
2366
2367 if (s->handshake_func == NULL)
2368 {
2369 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2370 return(-1);
2371 }
2372
2373 s->method->ssl_renegotiate_check(s);
2374
2375 if (SSL_in_init(s) || SSL_in_before(s))
2376 {
2377 ret=s->handshake_func(s);
2378 }
2379 return(ret);
2380 }
2381
2382/* For the next 2 functions, SSL_clear() sets shutdown and so
2383 * one of these calls will reset it */
2384void SSL_set_accept_state(SSL *s)
2385 {
2386 s->server=1;
2387 s->shutdown=0;
2388 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2389 s->handshake_func=s->method->ssl_accept;
2390 /* clear the current cipher */
2391 ssl_clear_cipher_ctx(s);
2392 ssl_clear_hash_ctx(&s->read_hash);
2393 ssl_clear_hash_ctx(&s->write_hash);
2394 }
2395
2396void SSL_set_connect_state(SSL *s)
2397 {
2398 s->server=0;
2399 s->shutdown=0;
2400 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2401 s->handshake_func=s->method->ssl_connect;
2402 /* clear the current cipher */
2403 ssl_clear_cipher_ctx(s);
2404 ssl_clear_hash_ctx(&s->read_hash);
2405 ssl_clear_hash_ctx(&s->write_hash);
2406 }
2407
2408int ssl_undefined_function(SSL *s)
2409 {
2410 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2411 return(0);
2412 }
2413
2414int ssl_undefined_void_function(void)
2415 {
2416 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2417 return(0);
2418 }
2419
2420int ssl_undefined_const_function(const SSL *s)
2421 {
2422 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2423 return(0);
2424 }
2425
2426SSL_METHOD *ssl_bad_method(int ver)
2427 {
2428 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2429 return(NULL);
2430 }
2431
2432const char *SSL_get_version(const SSL *s)
2433 {
2434 if (s->version == TLS1_VERSION)
2435 return("TLSv1");
2436 else if (s->version == SSL3_VERSION)
2437 return("SSLv3");
2438 else if (s->version == SSL2_VERSION)
2439 return("SSLv2");
2440 else
2441 return("unknown");
2442 }
2443
2444SSL *SSL_dup(SSL *s)
2445 {
2446 STACK_OF(X509_NAME) *sk;
2447 X509_NAME *xn;
2448 SSL *ret;
2449 int i;
2450
2451 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2452 return(NULL);
2453
2454 ret->version = s->version;
2455 ret->type = s->type;
2456 ret->method = s->method;
2457
2458 if (s->session != NULL)
2459 {
2460 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2461 SSL_copy_session_id(ret,s);
2462 }
2463 else
2464 {
2465 /* No session has been established yet, so we have to expect
2466 * that s->cert or ret->cert will be changed later --
2467 * they should not both point to the same object,
2468 * and thus we can't use SSL_copy_session_id. */
2469
2470 ret->method->ssl_free(ret);
2471 ret->method = s->method;
2472 ret->method->ssl_new(ret);
2473
2474 if (s->cert != NULL)
2475 {
2476 if (ret->cert != NULL)
2477 {
2478 ssl_cert_free(ret->cert);
2479 }
2480 ret->cert = ssl_cert_dup(s->cert);
2481 if (ret->cert == NULL)
2482 goto err;
2483 }
2484
2485 SSL_set_session_id_context(ret,
2486 s->sid_ctx, s->sid_ctx_length);
2487 }
2488
2489 ret->options=s->options;
2490 ret->mode=s->mode;
2491 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2492 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2493 ret->msg_callback = s->msg_callback;
2494 ret->msg_callback_arg = s->msg_callback_arg;
2495 SSL_set_verify(ret,SSL_get_verify_mode(s),
2496 SSL_get_verify_callback(s));
2497 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2498 ret->generate_session_id = s->generate_session_id;
2499
2500 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2501
2502 ret->debug=s->debug;
2503
2504 /* copy app data, a little dangerous perhaps */
2505 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2506 goto err;
2507
2508 /* setup rbio, and wbio */
2509 if (s->rbio != NULL)
2510 {
2511 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2512 goto err;
2513 }
2514 if (s->wbio != NULL)
2515 {
2516 if (s->wbio != s->rbio)
2517 {
2518 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2519 goto err;
2520 }
2521 else
2522 ret->wbio=ret->rbio;
2523 }
2524 ret->rwstate = s->rwstate;
2525 ret->in_handshake = s->in_handshake;
2526 ret->handshake_func = s->handshake_func;
2527 ret->server = s->server;
2528 ret->new_session = s->new_session;
2529 ret->quiet_shutdown = s->quiet_shutdown;
2530 ret->shutdown=s->shutdown;
2531 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2532 ret->rstate=s->rstate;
2533 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2534 ret->hit=s->hit;
2535
2536 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2537
2538 /* dup the cipher_list and cipher_list_by_id stacks */
2539 if (s->cipher_list != NULL)
2540 {
2541 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2542 goto err;
2543 }
2544 if (s->cipher_list_by_id != NULL)
2545 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2546 == NULL)
2547 goto err;
2548
2549 /* Dup the client_CA list */
2550 if (s->client_CA != NULL)
2551 {
2552 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2553 ret->client_CA=sk;
2554 for (i=0; i<sk_X509_NAME_num(sk); i++)
2555 {
2556 xn=sk_X509_NAME_value(sk,i);
2557 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2558 {
2559 X509_NAME_free(xn);
2560 goto err;
2561 }
2562 }
2563 }
2564
2565 if (0)
2566 {
2567err:
2568 if (ret != NULL) SSL_free(ret);
2569 ret=NULL;
2570 }
2571 return(ret);
2572 }
2573
2574void ssl_clear_cipher_ctx(SSL *s)
2575 {
2576 if (s->enc_read_ctx != NULL)
2577 {
2578 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2579 OPENSSL_free(s->enc_read_ctx);
2580 s->enc_read_ctx=NULL;
2581 }
2582 if (s->enc_write_ctx != NULL)
2583 {
2584 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2585 OPENSSL_free(s->enc_write_ctx);
2586 s->enc_write_ctx=NULL;
2587 }
2588#ifndef OPENSSL_NO_COMP
2589 if (s->expand != NULL)
2590 {
2591 COMP_CTX_free(s->expand);
2592 s->expand=NULL;
2593 }
2594 if (s->compress != NULL)
2595 {
2596 COMP_CTX_free(s->compress);
2597 s->compress=NULL;
2598 }
2599#endif
2600 }
2601
2602/* Fix this function so that it takes an optional type parameter */
2603X509 *SSL_get_certificate(const SSL *s)
2604 {
2605 if (s->cert != NULL)
2606 return(s->cert->key->x509);
2607 else
2608 return(NULL);
2609 }
2610
2611/* Fix this function so that it takes an optional type parameter */
2612EVP_PKEY *SSL_get_privatekey(SSL *s)
2613 {
2614 if (s->cert != NULL)
2615 return(s->cert->key->privatekey);
2616 else
2617 return(NULL);
2618 }
2619
2620const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2621 {
2622 if ((s->session != NULL) && (s->session->cipher != NULL))
2623 return(s->session->cipher);
2624 return(NULL);
2625 }
2626#ifdef OPENSSL_NO_COMP
2627const void *SSL_get_current_compression(SSL *s)
2628 {
2629 return NULL;
2630 }
2631const void *SSL_get_current_expansion(SSL *s)
2632 {
2633 return NULL;
2634 }
2635#else
2636
2637const COMP_METHOD *SSL_get_current_compression(SSL *s)
2638 {
2639 if (s->compress != NULL)
2640 return(s->compress->meth);
2641 return(NULL);
2642 }
2643
2644const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2645 {
2646 if (s->expand != NULL)
2647 return(s->expand->meth);
2648 return(NULL);
2649 }
2650#endif
2651
2652int ssl_init_wbio_buffer(SSL *s,int push)
2653 {
2654 BIO *bbio;
2655
2656 if (s->bbio == NULL)
2657 {
2658 bbio=BIO_new(BIO_f_buffer());
2659 if (bbio == NULL) return(0);
2660 s->bbio=bbio;
2661 }
2662 else
2663 {
2664 bbio=s->bbio;
2665 if (s->bbio == s->wbio)
2666 s->wbio=BIO_pop(s->wbio);
2667 }
2668 (void)BIO_reset(bbio);
2669/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2670 if (!BIO_set_read_buffer_size(bbio,1))
2671 {
2672 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2673 return(0);
2674 }
2675 if (push)
2676 {
2677 if (s->wbio != bbio)
2678 s->wbio=BIO_push(bbio,s->wbio);
2679 }
2680 else
2681 {
2682 if (s->wbio == bbio)
2683 s->wbio=BIO_pop(bbio);
2684 }
2685 return(1);
2686 }
2687
2688void ssl_free_wbio_buffer(SSL *s)
2689 {
2690 if (s->bbio == NULL) return;
2691
2692 if (s->bbio == s->wbio)
2693 {
2694 /* remove buffering */
2695 s->wbio=BIO_pop(s->wbio);
2696#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2697 assert(s->wbio != NULL);
2698#endif
2699 }
2700 BIO_free(s->bbio);
2701 s->bbio=NULL;
2702 }
2703
2704void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2705 {
2706 ctx->quiet_shutdown=mode;
2707 }
2708
2709int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2710 {
2711 return(ctx->quiet_shutdown);
2712 }
2713
2714void SSL_set_quiet_shutdown(SSL *s,int mode)
2715 {
2716 s->quiet_shutdown=mode;
2717 }
2718
2719int SSL_get_quiet_shutdown(const SSL *s)
2720 {
2721 return(s->quiet_shutdown);
2722 }
2723
2724void SSL_set_shutdown(SSL *s,int mode)
2725 {
2726 s->shutdown=mode;
2727 }
2728
2729int SSL_get_shutdown(const SSL *s)
2730 {
2731 return(s->shutdown);
2732 }
2733
2734int SSL_version(const SSL *s)
2735 {
2736 return(s->version);
2737 }
2738
2739SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2740 {
2741 return(ssl->ctx);
2742 }
2743
2744SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2745 {
2746 if (ssl->ctx == ctx)
2747 return ssl->ctx;
2748#ifndef OPENSSL_NO_TLSEXT
2749 if (ctx == NULL)
2750 ctx = ssl->initial_ctx;
2751#endif
2752 if (ssl->cert != NULL)
2753 ssl_cert_free(ssl->cert);
2754 ssl->cert = ssl_cert_dup(ctx->cert);
2755 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2756 if (ssl->ctx != NULL)
2757 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2758 ssl->ctx = ctx;
2759 return(ssl->ctx);
2760 }
2761
2762#ifndef OPENSSL_NO_STDIO
2763int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2764 {
2765 return(X509_STORE_set_default_paths(ctx->cert_store));
2766 }
2767
2768int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2769 const char *CApath)
2770 {
2771 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2772 }
2773#endif
2774
2775void SSL_set_info_callback(SSL *ssl,
2776 void (*cb)(const SSL *ssl,int type,int val))
2777 {
2778 ssl->info_callback=cb;
2779 }
2780
2781/* One compiler (Diab DCC) doesn't like argument names in returned
2782 function pointer. */
2783void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2784 {
2785 return ssl->info_callback;
2786 }
2787
2788int SSL_state(const SSL *ssl)
2789 {
2790 return(ssl->state);
2791 }
2792
2793void SSL_set_verify_result(SSL *ssl,long arg)
2794 {
2795 ssl->verify_result=arg;
2796 }
2797
2798long SSL_get_verify_result(const SSL *ssl)
2799 {
2800 return(ssl->verify_result);
2801 }
2802
2803int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2804 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2805 {
2806 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2807 new_func, dup_func, free_func);
2808 }
2809
2810int SSL_set_ex_data(SSL *s,int idx,void *arg)
2811 {
2812 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2813 }
2814
2815void *SSL_get_ex_data(const SSL *s,int idx)
2816 {
2817 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2818 }
2819
2820int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2821 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2822 {
2823 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2824 new_func, dup_func, free_func);
2825 }
2826
2827int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2828 {
2829 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2830 }
2831
2832void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2833 {
2834 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2835 }
2836
2837int ssl_ok(SSL *s)
2838 {
2839 return(1);
2840 }
2841
2842X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2843 {
2844 return(ctx->cert_store);
2845 }
2846
2847void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2848 {
2849 if (ctx->cert_store != NULL)
2850 X509_STORE_free(ctx->cert_store);
2851 ctx->cert_store=store;
2852 }
2853
2854int SSL_want(const SSL *s)
2855 {
2856 return(s->rwstate);
2857 }
2858
2859/*!
2860 * \brief Set the callback for generating temporary RSA keys.
2861 * \param ctx the SSL context.
2862 * \param cb the callback
2863 */
2864
2865#ifndef OPENSSL_NO_RSA
2866void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2867 int is_export,
2868 int keylength))
2869 {
2870 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2871 }
2872
2873void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2874 int is_export,
2875 int keylength))
2876 {
2877 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2878 }
2879#endif
2880
2881#ifdef DOXYGEN
2882/*!
2883 * \brief The RSA temporary key callback function.
2884 * \param ssl the SSL session.
2885 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2886 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2887 * of the required key in bits.
2888 * \return the temporary RSA key.
2889 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2890 */
2891
2892RSA *cb(SSL *ssl,int is_export,int keylength)
2893 {}
2894#endif
2895
2896/*!
2897 * \brief Set the callback for generating temporary DH keys.
2898 * \param ctx the SSL context.
2899 * \param dh the callback
2900 */
2901
2902#ifndef OPENSSL_NO_DH
2903void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2904 int keylength))
2905 {
2906 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2907 }
2908
2909void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2910 int keylength))
2911 {
2912 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2913 }
2914#endif
2915
2916#ifndef OPENSSL_NO_ECDH
2917void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2918 int keylength))
2919 {
2920 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2921 }
2922
2923void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2924 int keylength))
2925 {
2926 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2927 }
2928#endif
2929
2930#ifndef OPENSSL_NO_PSK
2931int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2932 {
2933 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2934 {
2935 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2936 return 0;
2937 }
2938 if (ctx->psk_identity_hint != NULL)
2939 OPENSSL_free(ctx->psk_identity_hint);
2940 if (identity_hint != NULL)
2941 {
2942 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2943 if (ctx->psk_identity_hint == NULL)
2944 return 0;
2945 }
2946 else
2947 ctx->psk_identity_hint = NULL;
2948 return 1;
2949 }
2950
2951int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2952 {
2953 if (s == NULL)
2954 return 0;
2955
2956 if (s->session == NULL)
2957 return 1; /* session not created yet, ignored */
2958
2959 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2960 {
2961 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2962 return 0;
2963 }
2964 if (s->session->psk_identity_hint != NULL)
2965 OPENSSL_free(s->session->psk_identity_hint);
2966 if (identity_hint != NULL)
2967 {
2968 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2969 if (s->session->psk_identity_hint == NULL)
2970 return 0;
2971 }
2972 else
2973 s->session->psk_identity_hint = NULL;
2974 return 1;
2975 }
2976
2977const char *SSL_get_psk_identity_hint(const SSL *s)
2978 {
2979 if (s == NULL || s->session == NULL)
2980 return NULL;
2981 return(s->session->psk_identity_hint);
2982 }
2983
2984const char *SSL_get_psk_identity(const SSL *s)
2985 {
2986 if (s == NULL || s->session == NULL)
2987 return NULL;
2988 return(s->session->psk_identity);
2989 }
2990
2991void SSL_set_psk_client_callback(SSL *s,
2992 unsigned int (*cb)(SSL *ssl, const char *hint,
2993 char *identity, unsigned int max_identity_len, unsigned char *psk,
2994 unsigned int max_psk_len))
2995 {
2996 s->psk_client_callback = cb;
2997 }
2998
2999void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3000 unsigned int (*cb)(SSL *ssl, const char *hint,
3001 char *identity, unsigned int max_identity_len, unsigned char *psk,
3002 unsigned int max_psk_len))
3003 {
3004 ctx->psk_client_callback = cb;
3005 }
3006
3007void SSL_set_psk_server_callback(SSL *s,
3008 unsigned int (*cb)(SSL *ssl, const char *identity,
3009 unsigned char *psk, unsigned int max_psk_len))
3010 {
3011 s->psk_server_callback = cb;
3012 }
3013
3014void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3015 unsigned int (*cb)(SSL *ssl, const char *identity,
3016 unsigned char *psk, unsigned int max_psk_len))
3017 {
3018 ctx->psk_server_callback = cb;
3019 }
3020#endif
3021
3022void 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))
3023 {
3024 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3025 }
3026void 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))
3027 {
3028 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3029 }
3030
3031/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3032 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3033 * any. If EVP_MD pointer is passed, initializes ctx with this md
3034 * Returns newly allocated ctx;
3035 */
3036
3037EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3038{
3039 ssl_clear_hash_ctx(hash);
3040 *hash = EVP_MD_CTX_create();
3041 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3042 return *hash;
3043}
3044void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3045{
3046
3047 if (*hash) EVP_MD_CTX_destroy(*hash);
3048 *hash=NULL;
3049}
3050
3051#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3052#include "../crypto/bio/bss_file.c"
3053#endif
3054
3055IMPLEMENT_STACK_OF(SSL_CIPHER)
3056IMPLEMENT_STACK_OF(SSL_COMP)
3057IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3058 ssl_cipher_id);
3059
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-27 13:34:59 +0000