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) 1998-2001 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#ifdef REF_CHECK
120# include <assert.h>
121#endif
122#include <stdio.h>
123#include "ssl_locl.h"
124#include "kssl_lcl.h"
125#include <openssl/objects.h>
126#include <openssl/lhash.h>
127#include <openssl/x509v3.h>
128#include <openssl/rand.h>
129#include <openssl/ocsp.h>
130#ifndef OPENSSL_NO_DH
131#include <openssl/dh.h>
132#endif
133#ifndef OPENSSL_NO_ENGINE
134#include <openssl/engine.h>
135#endif
136
137const char *SSL_version_str=OPENSSL_VERSION_TEXT;
138
139SSL3_ENC_METHOD ssl3_undef_enc_method={
140 /* evil casts, but these functions are only called if there's a library bug */
141 (int (*)(SSL *,int))ssl_undefined_function,
142 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
143 ssl_undefined_function,
144 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
145 (int (*)(SSL*, int))ssl_undefined_function,
146 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function,
147 0, /* finish_mac_length */
148 (int (*)(SSL *, EVP_MD_CTX *, unsigned char *))ssl_undefined_function,
149 NULL, /* client_finished_label */
150 0, /* client_finished_label_len */
151 NULL, /* server_finished_label */
152 0, /* server_finished_label_len */
153 (int (*)(int))ssl_undefined_function
154 };
155
156int SSL_clear(SSL *s)
157 {
158
159 if (s->method == NULL)
160 {
161 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
162 return(0);
163 }
164
165 if (ssl_clear_bad_session(s))
166 {
167 SSL_SESSION_free(s->session);
168 s->session=NULL;
169 }
170
171 s->error=0;
172 s->hit=0;
173 s->shutdown=0;
174
175#if 0 /* Disabled since version 1.10 of this file (early return not
176 * needed because SSL_clear is not called when doing renegotiation) */
177 /* This is set if we are doing dynamic renegotiation so keep
178 * the old cipher. It is sort of a SSL_clear_lite :-) */
179 if (s->new_session) return(1);
180#else
181 if (s->new_session)
182 {
183 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
184 return 0;
185 }
186#endif
187
188 s->type=0;
189
190 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
191
192 s->version=s->method->version;
193 s->client_version=s->version;
194 s->rwstate=SSL_NOTHING;
195 s->rstate=SSL_ST_READ_HEADER;
196#if 0
197 s->read_ahead=s->ctx->read_ahead;
198#endif
199
200 if (s->init_buf != NULL)
201 {
202 BUF_MEM_free(s->init_buf);
203 s->init_buf=NULL;
204 }
205
206 ssl_clear_cipher_ctx(s);
207
208 s->first_packet=0;
209
210#if 1
211 /* Check to see if we were changed into a different method, if
212 * so, revert back if we are not doing session-id reuse. */
213 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
214 {
215 s->method->ssl_free(s);
216 s->method=s->ctx->method;
217 if (!s->method->ssl_new(s))
218 return(0);
219 }
220 else
221#endif
222 s->method->ssl_clear(s);
223 return(1);
224 }
225
226/** Used to change an SSL_CTXs default SSL method type */
227int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
228 {
229 STACK_OF(SSL_CIPHER) *sk;
230
231 ctx->method=meth;
232
233 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
234 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
235 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
236 {
237 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
238 return(0);
239 }
240 return(1);
241 }
242
243SSL *SSL_new(SSL_CTX *ctx)
244 {
245 SSL *s;
246
247 if (ctx == NULL)
248 {
249 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
250 return(NULL);
251 }
252 if (ctx->method == NULL)
253 {
254 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
255 return(NULL);
256 }
257
258 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
259 if (s == NULL) goto err;
260 memset(s,0,sizeof(SSL));
261
262#ifndef OPENSSL_NO_KRB5
263 s->kssl_ctx = kssl_ctx_new();
264#endif /* OPENSSL_NO_KRB5 */
265
266 s->options=ctx->options;
267 s->mode=ctx->mode;
268 s->max_cert_list=ctx->max_cert_list;
269
270 if (ctx->cert != NULL)
271 {
272 /* Earlier library versions used to copy the pointer to
273 * the CERT, not its contents; only when setting new
274 * parameters for the per-SSL copy, ssl_cert_new would be
275 * called (and the direct reference to the per-SSL_CTX
276 * settings would be lost, but those still were indirectly
277 * accessed for various purposes, and for that reason they
278 * used to be known as s->ctx->default_cert).
279 * Now we don't look at the SSL_CTX's CERT after having
280 * duplicated it once. */
281
282 s->cert = ssl_cert_dup(ctx->cert);
283 if (s->cert == NULL)
284 goto err;
285 }
286 else
287 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
288
289 s->read_ahead=ctx->read_ahead;
290 s->msg_callback=ctx->msg_callback;
291 s->msg_callback_arg=ctx->msg_callback_arg;
292 s->verify_mode=ctx->verify_mode;
293#if 0
294 s->verify_depth=ctx->verify_depth;
295#endif
296 s->sid_ctx_length=ctx->sid_ctx_length;
297 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
298 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
299 s->verify_callback=ctx->default_verify_callback;
300 s->generate_session_id=ctx->generate_session_id;
301
302 s->param = X509_VERIFY_PARAM_new();
303 if (!s->param)
304 goto err;
305 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
306#if 0
307 s->purpose = ctx->purpose;
308 s->trust = ctx->trust;
309#endif
310 s->quiet_shutdown=ctx->quiet_shutdown;
311
312 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
313 s->ctx=ctx;
314#ifndef OPENSSL_NO_TLSEXT
315 s->tlsext_debug_cb = 0;
316 s->tlsext_debug_arg = NULL;
317 s->tlsext_ticket_expected = 0;
318 s->tlsext_status_type = -1;
319 s->tlsext_status_expected = 0;
320 s->tlsext_ocsp_ids = NULL;
321 s->tlsext_ocsp_exts = NULL;
322 s->tlsext_ocsp_resp = NULL;
323 s->tlsext_ocsp_resplen = -1;
324 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
325 s->initial_ctx=ctx;
326#endif
327 s->verify_result=X509_V_OK;
328
329 s->method=ctx->method;
330
331 if (!s->method->ssl_new(s))
332 goto err;
333
334 s->references=1;
335 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
336
337 SSL_clear(s);
338
339 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
340
341 return(s);
342err:
343 if (s != NULL)
344 {
345 if (s->cert != NULL)
346 ssl_cert_free(s->cert);
347 if (s->ctx != NULL)
348 SSL_CTX_free(s->ctx); /* decrement reference count */
349 OPENSSL_free(s);
350 }
351 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
352 return(NULL);
353 }
354
355int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
356 unsigned int sid_ctx_len)
357 {
358 if(sid_ctx_len > sizeof ctx->sid_ctx)
359 {
360 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
361 return 0;
362 }
363 ctx->sid_ctx_length=sid_ctx_len;
364 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
365
366 return 1;
367 }
368
369int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
370 unsigned int sid_ctx_len)
371 {
372 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
373 {
374 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
375 return 0;
376 }
377 ssl->sid_ctx_length=sid_ctx_len;
378 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
379
380 return 1;
381 }
382
383int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
384 {
385 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
386 ctx->generate_session_id = cb;
387 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
388 return 1;
389 }
390
391int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
392 {
393 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
394 ssl->generate_session_id = cb;
395 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
396 return 1;
397 }
398
399int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
400 unsigned int id_len)
401 {
402 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
403 * we can "construct" a session to give us the desired check - ie. to
404 * find if there's a session in the hash table that would conflict with
405 * any new session built out of this id/id_len and the ssl_version in
406 * use by this SSL. */
407 SSL_SESSION r, *p;
408
409 if(id_len > sizeof r.session_id)
410 return 0;
411
412 r.ssl_version = ssl->version;
413 r.session_id_length = id_len;
414 memcpy(r.session_id, id, id_len);
415 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
416 * callback is calling us to check the uniqueness of a shorter ID, it
417 * must be compared as a padded-out ID because that is what it will be
418 * converted to when the callback has finished choosing it. */
419 if((r.ssl_version == SSL2_VERSION) &&
420 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
421 {
422 memset(r.session_id + id_len, 0,
423 SSL2_SSL_SESSION_ID_LENGTH - id_len);
424 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
425 }
426
427 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
428 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
429 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
430 return (p != NULL);
431 }
432
433int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
434 {
435 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
436 }
437
438int SSL_set_purpose(SSL *s, int purpose)
439 {
440 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
441 }
442
443int SSL_CTX_set_trust(SSL_CTX *s, int trust)
444 {
445 return X509_VERIFY_PARAM_set_trust(s->param, trust);
446 }
447
448int SSL_set_trust(SSL *s, int trust)
449 {
450 return X509_VERIFY_PARAM_set_trust(s->param, trust);
451 }
452
453void SSL_free(SSL *s)
454 {
455 int i;
456
457 if(s == NULL)
458 return;
459
460 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
461#ifdef REF_PRINT
462 REF_PRINT("SSL",s);
463#endif
464 if (i > 0) return;
465#ifdef REF_CHECK
466 if (i < 0)
467 {
468 fprintf(stderr,"SSL_free, bad reference count\n");
469 abort(); /* ok */
470 }
471#endif
472
473 if (s->param)
474 X509_VERIFY_PARAM_free(s->param);
475
476 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
477
478 if (s->bbio != NULL)
479 {
480 /* If the buffering BIO is in place, pop it off */
481 if (s->bbio == s->wbio)
482 {
483 s->wbio=BIO_pop(s->wbio);
484 }
485 BIO_free(s->bbio);
486 s->bbio=NULL;
487 }
488 if (s->rbio != NULL)
489 BIO_free_all(s->rbio);
490 if ((s->wbio != NULL) && (s->wbio != s->rbio))
491 BIO_free_all(s->wbio);
492
493 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
494
495 /* add extra stuff */
496 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
497 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
498
499 /* Make the next call work :-) */
500 if (s->session != NULL)
501 {
502 ssl_clear_bad_session(s);
503 SSL_SESSION_free(s->session);
504 }
505
506 ssl_clear_cipher_ctx(s);
507
508 if (s->cert != NULL) ssl_cert_free(s->cert);
509 /* Free up if allocated */
510
511#ifndef OPENSSL_NO_TLSEXT
512 if (s->tlsext_hostname)
513 OPENSSL_free(s->tlsext_hostname);
514 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
515 if (s->tlsext_ocsp_exts)
516 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
517 X509_EXTENSION_free);
518 if (s->tlsext_ocsp_ids)
519 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
520 if (s->tlsext_ocsp_resp)
521 OPENSSL_free(s->tlsext_ocsp_resp);
522#endif
523 if (s->client_CA != NULL)
524 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
525
526 if (s->method != NULL) s->method->ssl_free(s);
527
528 if (s->ctx) SSL_CTX_free(s->ctx);
529
530#ifndef OPENSSL_NO_KRB5
531 if (s->kssl_ctx != NULL)
532 kssl_ctx_free(s->kssl_ctx);
533#endif /* OPENSSL_NO_KRB5 */
534
535 OPENSSL_free(s);
536 }
537
538void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
539 {
540 /* If the output buffering BIO is still in place, remove it
541 */
542 if (s->bbio != NULL)
543 {
544 if (s->wbio == s->bbio)
545 {
546 s->wbio=s->wbio->next_bio;
547 s->bbio->next_bio=NULL;
548 }
549 }
550 if ((s->rbio != NULL) && (s->rbio != rbio))
551 BIO_free_all(s->rbio);
552 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
553 BIO_free_all(s->wbio);
554 s->rbio=rbio;
555 s->wbio=wbio;
556 }
557
558BIO *SSL_get_rbio(const SSL *s)
559 { return(s->rbio); }
560
561BIO *SSL_get_wbio(const SSL *s)
562 { return(s->wbio); }
563
564int SSL_get_fd(const SSL *s)
565 {
566 return(SSL_get_rfd(s));
567 }
568
569int SSL_get_rfd(const SSL *s)
570 {
571 int ret= -1;
572 BIO *b,*r;
573
574 b=SSL_get_rbio(s);
575 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
576 if (r != NULL)
577 BIO_get_fd(r,&ret);
578 return(ret);
579 }
580
581int SSL_get_wfd(const SSL *s)
582 {
583 int ret= -1;
584 BIO *b,*r;
585
586 b=SSL_get_wbio(s);
587 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
588 if (r != NULL)
589 BIO_get_fd(r,&ret);
590 return(ret);
591 }
592
593#ifndef OPENSSL_NO_SOCK
594int SSL_set_fd(SSL *s,int fd)
595 {
596 int ret=0;
597 BIO *bio=NULL;
598
599 bio=BIO_new(BIO_s_socket());
600
601 if (bio == NULL)
602 {
603 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
604 goto err;
605 }
606 BIO_set_fd(bio,fd,BIO_NOCLOSE);
607 SSL_set_bio(s,bio,bio);
608 ret=1;
609err:
610 return(ret);
611 }
612
613int SSL_set_wfd(SSL *s,int fd)
614 {
615 int ret=0;
616 BIO *bio=NULL;
617
618 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
619 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
620 {
621 bio=BIO_new(BIO_s_socket());
622
623 if (bio == NULL)
624 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
625 BIO_set_fd(bio,fd,BIO_NOCLOSE);
626 SSL_set_bio(s,SSL_get_rbio(s),bio);
627 }
628 else
629 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
630 ret=1;
631err:
632 return(ret);
633 }
634
635int SSL_set_rfd(SSL *s,int fd)
636 {
637 int ret=0;
638 BIO *bio=NULL;
639
640 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
641 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
642 {
643 bio=BIO_new(BIO_s_socket());
644
645 if (bio == NULL)
646 {
647 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
648 goto err;
649 }
650 BIO_set_fd(bio,fd,BIO_NOCLOSE);
651 SSL_set_bio(s,bio,SSL_get_wbio(s));
652 }
653 else
654 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
655 ret=1;
656err:
657 return(ret);
658 }
659#endif
660
661
662/* return length of latest Finished message we sent, copy to 'buf' */
663size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
664 {
665 size_t ret = 0;
666
667 if (s->s3 != NULL)
668 {
669 ret = s->s3->tmp.finish_md_len;
670 if (count > ret)
671 count = ret;
672 memcpy(buf, s->s3->tmp.finish_md, count);
673 }
674 return ret;
675 }
676
677/* return length of latest Finished message we expected, copy to 'buf' */
678size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
679 {
680 size_t ret = 0;
681
682 if (s->s3 != NULL)
683 {
684 ret = s->s3->tmp.peer_finish_md_len;
685 if (count > ret)
686 count = ret;
687 memcpy(buf, s->s3->tmp.peer_finish_md, count);
688 }
689 return ret;
690 }
691
692
693int SSL_get_verify_mode(const SSL *s)
694 {
695 return(s->verify_mode);
696 }
697
698int SSL_get_verify_depth(const SSL *s)
699 {
700 return X509_VERIFY_PARAM_get_depth(s->param);
701 }
702
703int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
704 {
705 return(s->verify_callback);
706 }
707
708int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
709 {
710 return(ctx->verify_mode);
711 }
712
713int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
714 {
715 return X509_VERIFY_PARAM_get_depth(ctx->param);
716 }
717
718int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
719 {
720 return(ctx->default_verify_callback);
721 }
722
723void SSL_set_verify(SSL *s,int mode,
724 int (*callback)(int ok,X509_STORE_CTX *ctx))
725 {
726 s->verify_mode=mode;
727 if (callback != NULL)
728 s->verify_callback=callback;
729 }
730
731void SSL_set_verify_depth(SSL *s,int depth)
732 {
733 X509_VERIFY_PARAM_set_depth(s->param, depth);
734 }
735
736void SSL_set_read_ahead(SSL *s,int yes)
737 {
738 s->read_ahead=yes;
739 }
740
741int SSL_get_read_ahead(const SSL *s)
742 {
743 return(s->read_ahead);
744 }
745
746int SSL_pending(const SSL *s)
747 {
748 /* SSL_pending cannot work properly if read-ahead is enabled
749 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
750 * and it is impossible to fix since SSL_pending cannot report
751 * errors that may be observed while scanning the new data.
752 * (Note that SSL_pending() is often used as a boolean value,
753 * so we'd better not return -1.)
754 */
755 return(s->method->ssl_pending(s));
756 }
757
758X509 *SSL_get_peer_certificate(const SSL *s)
759 {
760 X509 *r;
761
762 if ((s == NULL) || (s->session == NULL))
763 r=NULL;
764 else
765 r=s->session->peer;
766
767 if (r == NULL) return(r);
768
769 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
770
771 return(r);
772 }
773
774STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
775 {
776 STACK_OF(X509) *r;
777
778 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
779 r=NULL;
780 else
781 r=s->session->sess_cert->cert_chain;
782
783 /* If we are a client, cert_chain includes the peer's own
784 * certificate; if we are a server, it does not. */
785
786 return(r);
787 }
788
789/* Now in theory, since the calling process own 't' it should be safe to
790 * modify. We need to be able to read f without being hassled */
791void SSL_copy_session_id(SSL *t,const SSL *f)
792 {
793 CERT *tmp;
794
795 /* Do we need to to SSL locking? */
796 SSL_set_session(t,SSL_get_session(f));
797
798 /* what if we are setup as SSLv2 but want to talk SSLv3 or
799 * vice-versa */
800 if (t->method != f->method)
801 {
802 t->method->ssl_free(t); /* cleanup current */
803 t->method=f->method; /* change method */
804 t->method->ssl_new(t); /* setup new */
805 }
806
807 tmp=t->cert;
808 if (f->cert != NULL)
809 {
810 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
811 t->cert=f->cert;
812 }
813 else
814 t->cert=NULL;
815 if (tmp != NULL) ssl_cert_free(tmp);
816 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
817 }
818
819/* Fix this so it checks all the valid key/cert options */
820int SSL_CTX_check_private_key(const SSL_CTX *ctx)
821 {
822 if ( (ctx == NULL) ||
823 (ctx->cert == NULL) ||
824 (ctx->cert->key->x509 == NULL))
825 {
826 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
827 return(0);
828 }
829 if (ctx->cert->key->privatekey == NULL)
830 {
831 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
832 return(0);
833 }
834 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
835 }
836
837/* Fix this function so that it takes an optional type parameter */
838int SSL_check_private_key(const SSL *ssl)
839 {
840 if (ssl == NULL)
841 {
842 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
843 return(0);
844 }
845 if (ssl->cert == NULL)
846 {
847 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
848 return 0;
849 }
850 if (ssl->cert->key->x509 == NULL)
851 {
852 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
853 return(0);
854 }
855 if (ssl->cert->key->privatekey == NULL)
856 {
857 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
858 return(0);
859 }
860 return(X509_check_private_key(ssl->cert->key->x509,
861 ssl->cert->key->privatekey));
862 }
863
864int SSL_accept(SSL *s)
865 {
866 if (s->handshake_func == 0)
867 /* Not properly initialized yet */
868 SSL_set_accept_state(s);
869
870 return(s->method->ssl_accept(s));
871 }
872
873int SSL_connect(SSL *s)
874 {
875 if (s->handshake_func == 0)
876 /* Not properly initialized yet */
877 SSL_set_connect_state(s);
878
879 return(s->method->ssl_connect(s));
880 }
881
882long SSL_get_default_timeout(const SSL *s)
883 {
884 return(s->method->get_timeout());
885 }
886
887int SSL_read(SSL *s,void *buf,int num)
888 {
889 if (s->handshake_func == 0)
890 {
891 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
892 return -1;
893 }
894
895 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
896 {
897 s->rwstate=SSL_NOTHING;
898 return(0);
899 }
900 return(s->method->ssl_read(s,buf,num));
901 }
902
903int SSL_peek(SSL *s,void *buf,int num)
904 {
905 if (s->handshake_func == 0)
906 {
907 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
908 return -1;
909 }
910
911 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
912 {
913 return(0);
914 }
915 return(s->method->ssl_peek(s,buf,num));
916 }
917
918int SSL_write(SSL *s,const void *buf,int num)
919 {
920 if (s->handshake_func == 0)
921 {
922 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
923 return -1;
924 }
925
926 if (s->shutdown & SSL_SENT_SHUTDOWN)
927 {
928 s->rwstate=SSL_NOTHING;
929 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
930 return(-1);
931 }
932 return(s->method->ssl_write(s,buf,num));
933 }
934
935int SSL_shutdown(SSL *s)
936 {
937 /* Note that this function behaves differently from what one might
938 * expect. Return values are 0 for no success (yet),
939 * 1 for success; but calling it once is usually not enough,
940 * even if blocking I/O is used (see ssl3_shutdown).
941 */
942
943 if (s->handshake_func == 0)
944 {
945 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
946 return -1;
947 }
948
949 if ((s != NULL) && !SSL_in_init(s))
950 return(s->method->ssl_shutdown(s));
951 else
952 return(1);
953 }
954
955int SSL_renegotiate(SSL *s)
956 {
957 if (s->new_session == 0)
958 {
959 s->new_session=1;
960 }
961 return(s->method->ssl_renegotiate(s));
962 }
963
964int SSL_renegotiate_pending(SSL *s)
965 {
966 /* becomes true when negotiation is requested;
967 * false again once a handshake has finished */
968 return (s->new_session != 0);
969 }
970
971long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
972 {
973 long l;
974
975 switch (cmd)
976 {
977 case SSL_CTRL_GET_READ_AHEAD:
978 return(s->read_ahead);
979 case SSL_CTRL_SET_READ_AHEAD:
980 l=s->read_ahead;
981 s->read_ahead=larg;
982 return(l);
983
984 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
985 s->msg_callback_arg = parg;
986 return 1;
987
988 case SSL_CTRL_OPTIONS:
989 return(s->options|=larg);
990 case SSL_CTRL_CLEAR_OPTIONS:
991 return(s->options&=~larg);
992 case SSL_CTRL_MODE:
993 return(s->mode|=larg);
994 case SSL_CTRL_CLEAR_MODE:
995 return(s->mode &=~larg);
996 case SSL_CTRL_GET_MAX_CERT_LIST:
997 return(s->max_cert_list);
998 case SSL_CTRL_SET_MAX_CERT_LIST:
999 l=s->max_cert_list;
1000 s->max_cert_list=larg;
1001 return(l);
1002 case SSL_CTRL_SET_MTU:
1003 if (SSL_version(s) == DTLS1_VERSION ||
1004 SSL_version(s) == DTLS1_BAD_VER)
1005 {
1006 s->d1->mtu = larg;
1007 return larg;
1008 }
1009 return 0;
1010 case SSL_CTRL_GET_RI_SUPPORT:
1011 if (s->s3)
1012 return s->s3->send_connection_binding;
1013 else return 0;
1014 default:
1015 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1016 }
1017 }
1018
1019long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1020 {
1021 switch(cmd)
1022 {
1023 case SSL_CTRL_SET_MSG_CALLBACK:
1024 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1025 return 1;
1026
1027 default:
1028 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1029 }
1030 }
1031
1032struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
1033 {
1034 return ctx->sessions;
1035 }
1036
1037long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1038 {
1039 long l;
1040
1041 switch (cmd)
1042 {
1043 case SSL_CTRL_GET_READ_AHEAD:
1044 return(ctx->read_ahead);
1045 case SSL_CTRL_SET_READ_AHEAD:
1046 l=ctx->read_ahead;
1047 ctx->read_ahead=larg;
1048 return(l);
1049
1050 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1051 ctx->msg_callback_arg = parg;
1052 return 1;
1053
1054 case SSL_CTRL_GET_MAX_CERT_LIST:
1055 return(ctx->max_cert_list);
1056 case SSL_CTRL_SET_MAX_CERT_LIST:
1057 l=ctx->max_cert_list;
1058 ctx->max_cert_list=larg;
1059 return(l);
1060
1061 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1062 l=ctx->session_cache_size;
1063 ctx->session_cache_size=larg;
1064 return(l);
1065 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1066 return(ctx->session_cache_size);
1067 case SSL_CTRL_SET_SESS_CACHE_MODE:
1068 l=ctx->session_cache_mode;
1069 ctx->session_cache_mode=larg;
1070 return(l);
1071 case SSL_CTRL_GET_SESS_CACHE_MODE:
1072 return(ctx->session_cache_mode);
1073
1074 case SSL_CTRL_SESS_NUMBER:
1075 return(ctx->sessions->num_items);
1076 case SSL_CTRL_SESS_CONNECT:
1077 return(ctx->stats.sess_connect);
1078 case SSL_CTRL_SESS_CONNECT_GOOD:
1079 return(ctx->stats.sess_connect_good);
1080 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1081 return(ctx->stats.sess_connect_renegotiate);
1082 case SSL_CTRL_SESS_ACCEPT:
1083 return(ctx->stats.sess_accept);
1084 case SSL_CTRL_SESS_ACCEPT_GOOD:
1085 return(ctx->stats.sess_accept_good);
1086 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1087 return(ctx->stats.sess_accept_renegotiate);
1088 case SSL_CTRL_SESS_HIT:
1089 return(ctx->stats.sess_hit);
1090 case SSL_CTRL_SESS_CB_HIT:
1091 return(ctx->stats.sess_cb_hit);
1092 case SSL_CTRL_SESS_MISSES:
1093 return(ctx->stats.sess_miss);
1094 case SSL_CTRL_SESS_TIMEOUTS:
1095 return(ctx->stats.sess_timeout);
1096 case SSL_CTRL_SESS_CACHE_FULL:
1097 return(ctx->stats.sess_cache_full);
1098 case SSL_CTRL_OPTIONS:
1099 return(ctx->options|=larg);
1100 case SSL_CTRL_CLEAR_OPTIONS:
1101 return(ctx->options&=~larg);
1102 case SSL_CTRL_MODE:
1103 return(ctx->mode|=larg);
1104 case SSL_CTRL_CLEAR_MODE:
1105 return(ctx->mode&=~larg);
1106 default:
1107 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1108 }
1109 }
1110
1111long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1112 {
1113 switch(cmd)
1114 {
1115 case SSL_CTRL_SET_MSG_CALLBACK:
1116 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1117 return 1;
1118
1119 default:
1120 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1121 }
1122 }
1123
1124int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1125 {
1126 long l;
1127
1128 l=a->id-b->id;
1129 if (l == 0L)
1130 return(0);
1131 else
1132 return((l > 0)?1:-1);
1133 }
1134
1135int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1136 const SSL_CIPHER * const *bp)
1137 {
1138 long l;
1139
1140 l=(*ap)->id-(*bp)->id;
1141 if (l == 0L)
1142 return(0);
1143 else
1144 return((l > 0)?1:-1);
1145 }
1146
1147/** return a STACK of the ciphers available for the SSL and in order of
1148 * preference */
1149STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1150 {
1151 if (s != NULL)
1152 {
1153 if (s->cipher_list != NULL)
1154 {
1155 return(s->cipher_list);
1156 }
1157 else if ((s->ctx != NULL) &&
1158 (s->ctx->cipher_list != NULL))
1159 {
1160 return(s->ctx->cipher_list);
1161 }
1162 }
1163 return(NULL);
1164 }
1165
1166/** return a STACK of the ciphers available for the SSL and in order of
1167 * algorithm id */
1168STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1169 {
1170 if (s != NULL)
1171 {
1172 if (s->cipher_list_by_id != NULL)
1173 {
1174 return(s->cipher_list_by_id);
1175 }
1176 else if ((s->ctx != NULL) &&
1177 (s->ctx->cipher_list_by_id != NULL))
1178 {
1179 return(s->ctx->cipher_list_by_id);
1180 }
1181 }
1182 return(NULL);
1183 }
1184
1185/** The old interface to get the same thing as SSL_get_ciphers() */
1186const char *SSL_get_cipher_list(const SSL *s,int n)
1187 {
1188 SSL_CIPHER *c;
1189 STACK_OF(SSL_CIPHER) *sk;
1190
1191 if (s == NULL) return(NULL);
1192 sk=SSL_get_ciphers(s);
1193 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1194 return(NULL);
1195 c=sk_SSL_CIPHER_value(sk,n);
1196 if (c == NULL) return(NULL);
1197 return(c->name);
1198 }
1199
1200/** specify the ciphers to be used by default by the SSL_CTX */
1201int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1202 {
1203 STACK_OF(SSL_CIPHER) *sk;
1204
1205 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1206 &ctx->cipher_list_by_id,str);
1207 /* ssl_create_cipher_list may return an empty stack if it
1208 * was unable to find a cipher matching the given rule string
1209 * (for example if the rule string specifies a cipher which
1210 * has been disabled). This is not an error as far as
1211 * ssl_create_cipher_list is concerned, and hence
1212 * ctx->cipher_list and ctx->cipher_list_by_id has been
1213 * updated. */
1214 if (sk == NULL)
1215 return 0;
1216 else if (sk_SSL_CIPHER_num(sk) == 0)
1217 {
1218 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1219 return 0;
1220 }
1221 return 1;
1222 }
1223
1224/** specify the ciphers to be used by the SSL */
1225int SSL_set_cipher_list(SSL *s,const char *str)
1226 {
1227 STACK_OF(SSL_CIPHER) *sk;
1228
1229 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1230 &s->cipher_list_by_id,str);
1231 /* see comment in SSL_CTX_set_cipher_list */
1232 if (sk == NULL)
1233 return 0;
1234 else if (sk_SSL_CIPHER_num(sk) == 0)
1235 {
1236 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1237 return 0;
1238 }
1239 return 1;
1240 }
1241
1242/* works well for SSLv2, not so good for SSLv3 */
1243char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1244 {
1245 char *p;
1246 STACK_OF(SSL_CIPHER) *sk;
1247 SSL_CIPHER *c;
1248 int i;
1249
1250 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1251 (len < 2))
1252 return(NULL);
1253
1254 p=buf;
1255 sk=s->session->ciphers;
1256 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1257 {
1258 int n;
1259
1260 c=sk_SSL_CIPHER_value(sk,i);
1261 n=strlen(c->name);
1262 if (n+1 > len)
1263 {
1264 if (p != buf)
1265 --p;
1266 *p='\0';
1267 return buf;
1268 }
1269 strcpy(p,c->name);
1270 p+=n;
1271 *(p++)=':';
1272 len-=n+1;
1273 }
1274 p[-1]='\0';
1275 return(buf);
1276 }
1277
1278int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1279 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1280 {
1281 int i,j=0;
1282 SSL_CIPHER *c;
1283 unsigned char *q;
1284#ifndef OPENSSL_NO_KRB5
1285 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1286#endif /* OPENSSL_NO_KRB5 */
1287
1288 if (sk == NULL) return(0);
1289 q=p;
1290
1291 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1292 {
1293 c=sk_SSL_CIPHER_value(sk,i);
1294#ifndef OPENSSL_NO_KRB5
1295 if ((c->algorithms & SSL_KRB5) && nokrb5)
1296 continue;
1297#endif /* OPENSSL_NO_KRB5 */
1298
1299 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1300 p+=j;
1301 }
1302 /* If p == q, no ciphers and caller indicates an error. Otherwise
1303 * add SCSV if not renegotiating.
1304 */
1305 if (p != q && !s->new_session)
1306 {
1307 static SSL_CIPHER scsv =
1308 {
1309 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0,
1310 };
1311 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1312 p+=j;
1313#ifdef OPENSSL_RI_DEBUG
1314 fprintf(stderr, "SCSV sent by client\n");
1315#endif
1316 }
1317
1318 return(p-q);
1319 }
1320
1321STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1322 STACK_OF(SSL_CIPHER) **skp)
1323 {
1324 SSL_CIPHER *c;
1325 STACK_OF(SSL_CIPHER) *sk;
1326 int i,n;
1327 if (s->s3)
1328 s->s3->send_connection_binding = 0;
1329
1330 n=ssl_put_cipher_by_char(s,NULL,NULL);
1331 if ((num%n) != 0)
1332 {
1333 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1334 return(NULL);
1335 }
1336 if ((skp == NULL) || (*skp == NULL))
1337 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1338 else
1339 {
1340 sk= *skp;
1341 sk_SSL_CIPHER_zero(sk);
1342 }
1343
1344 for (i=0; i<num; i+=n)
1345 {
1346 /* Check for SCSV */
1347 if (s->s3 && (n != 3 || !p[0]) &&
1348 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1349 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1350 {
1351 /* SCSV fatal if renegotiating */
1352 if (s->new_session)
1353 {
1354 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1355 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1356 goto err;
1357 }
1358 s->s3->send_connection_binding = 1;
1359 p += n;
1360#ifdef OPENSSL_RI_DEBUG
1361 fprintf(stderr, "SCSV received by server\n");
1362#endif
1363 continue;
1364 }
1365
1366 c=ssl_get_cipher_by_char(s,p);
1367 p+=n;
1368 if (c != NULL)
1369 {
1370 if (!sk_SSL_CIPHER_push(sk,c))
1371 {
1372 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1373 goto err;
1374 }
1375 }
1376 }
1377
1378 if (skp != NULL)
1379 *skp=sk;
1380 return(sk);
1381err:
1382 if ((skp == NULL) || (*skp == NULL))
1383 sk_SSL_CIPHER_free(sk);
1384 return(NULL);
1385 }
1386
1387#ifndef OPENSSL_NO_TLSEXT
1388/** return a servername extension value if provided in Client Hello, or NULL.
1389 * So far, only host_name types are defined (RFC 3546).
1390 */
1391
1392const char *SSL_get_servername(const SSL *s, const int type)
1393 {
1394 if (type != TLSEXT_NAMETYPE_host_name)
1395 return NULL;
1396
1397 return s->session && !s->tlsext_hostname ?
1398 s->session->tlsext_hostname :
1399 s->tlsext_hostname;
1400 }
1401
1402int SSL_get_servername_type(const SSL *s)
1403 {
1404 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1405 return TLSEXT_NAMETYPE_host_name;
1406 return -1;
1407 }
1408#endif
1409
1410unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
1411 {
1412 unsigned long l;
1413
1414 l=(unsigned long)
1415 ((unsigned int) a->session_id[0] )|
1416 ((unsigned int) a->session_id[1]<< 8L)|
1417 ((unsigned long)a->session_id[2]<<16L)|
1418 ((unsigned long)a->session_id[3]<<24L);
1419 return(l);
1420 }
1421
1422/* NB: If this function (or indeed the hash function which uses a sort of
1423 * coarser function than this one) is changed, ensure
1424 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1425 * able to construct an SSL_SESSION that will collide with any existing session
1426 * with a matching session ID. */
1427int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1428 {
1429 if (a->ssl_version != b->ssl_version)
1430 return(1);
1431 if (a->session_id_length != b->session_id_length)
1432 return(1);
1433 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1434 }
1435
1436/* These wrapper functions should remain rather than redeclaring
1437 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1438 * variable. The reason is that the functions aren't static, they're exposed via
1439 * ssl.h. */
1440static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1441static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1442
1443SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1444 {
1445 SSL_CTX *ret=NULL;
1446
1447 if (meth == NULL)
1448 {
1449 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1450 return(NULL);
1451 }
1452
1453#ifdef OPENSSL_FIPS
1454 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1455 {
1456 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1457 return NULL;
1458 }
1459#endif
1460
1461 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1462 {
1463 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1464 goto err;
1465 }
1466 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1467 if (ret == NULL)
1468 goto err;
1469
1470 memset(ret,0,sizeof(SSL_CTX));
1471
1472 ret->method=meth;
1473
1474 ret->cert_store=NULL;
1475 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1476 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1477 ret->session_cache_head=NULL;
1478 ret->session_cache_tail=NULL;
1479
1480 /* We take the system default */
1481 ret->session_timeout=meth->get_timeout();
1482
1483 ret->new_session_cb=0;
1484 ret->remove_session_cb=0;
1485 ret->get_session_cb=0;
1486 ret->generate_session_id=0;
1487
1488 memset((char *)&ret->stats,0,sizeof(ret->stats));
1489
1490 ret->references=1;
1491 ret->quiet_shutdown=0;
1492
1493/* ret->cipher=NULL;*/
1494/* ret->s2->challenge=NULL;
1495 ret->master_key=NULL;
1496 ret->key_arg=NULL;
1497 ret->s2->conn_id=NULL; */
1498
1499 ret->info_callback=NULL;
1500
1501 ret->app_verify_callback=0;
1502 ret->app_verify_arg=NULL;
1503
1504 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1505 ret->read_ahead=0;
1506 ret->msg_callback=0;
1507 ret->msg_callback_arg=NULL;
1508 ret->verify_mode=SSL_VERIFY_NONE;
1509#if 0
1510 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1511#endif
1512 ret->sid_ctx_length=0;
1513 ret->default_verify_callback=NULL;
1514 if ((ret->cert=ssl_cert_new()) == NULL)
1515 goto err;
1516
1517 ret->default_passwd_callback=0;
1518 ret->default_passwd_callback_userdata=NULL;
1519 ret->client_cert_cb=0;
1520 ret->app_gen_cookie_cb=0;
1521 ret->app_verify_cookie_cb=0;
1522
1523 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1524 LHASH_COMP_FN(SSL_SESSION_cmp));
1525 if (ret->sessions == NULL) goto err;
1526 ret->cert_store=X509_STORE_new();
1527 if (ret->cert_store == NULL) goto err;
1528
1529 ssl_create_cipher_list(ret->method,
1530 &ret->cipher_list,&ret->cipher_list_by_id,
1531 SSL_DEFAULT_CIPHER_LIST);
1532 if (ret->cipher_list == NULL
1533 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1534 {
1535 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1536 goto err2;
1537 }
1538
1539 ret->param = X509_VERIFY_PARAM_new();
1540 if (!ret->param)
1541 goto err;
1542
1543 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1544 {
1545 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1546 goto err2;
1547 }
1548 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1549 {
1550 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1551 goto err2;
1552 }
1553 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1554 {
1555 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1556 goto err2;
1557 }
1558
1559 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1560 goto err;
1561
1562 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1563
1564 ret->extra_certs=NULL;
1565 ret->comp_methods=SSL_COMP_get_compression_methods();
1566
1567#ifndef OPENSSL_NO_TLSEXT
1568 ret->tlsext_servername_callback = 0;
1569 ret->tlsext_servername_arg = NULL;
1570 /* Setup RFC4507 ticket keys */
1571 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1572 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1573 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1574 ret->options |= SSL_OP_NO_TICKET;
1575
1576 ret->tlsext_status_cb = 0;
1577 ret->tlsext_status_arg = NULL;
1578
1579#endif
1580
1581#ifndef OPENSSL_NO_ENGINE
1582 ret->client_cert_engine = NULL;
1583#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1584#define eng_strx(x) #x
1585#define eng_str(x) eng_strx(x)
1586 /* Use specific client engine automatically... ignore errors */
1587 {
1588 ENGINE *eng;
1589 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1590 if (!eng)
1591 {
1592 ERR_clear_error();
1593 ENGINE_load_builtin_engines();
1594 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1595 }
1596 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1597 ERR_clear_error();
1598 }
1599#endif
1600#endif
1601 /* Default is to connect to non-RI servers. When RI is more widely
1602 * deployed might change this.
1603 */
1604 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1605
1606 return(ret);
1607err:
1608 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1609err2:
1610 if (ret != NULL) SSL_CTX_free(ret);
1611 return(NULL);
1612 }
1613
1614#if 0
1615static void SSL_COMP_free(SSL_COMP *comp)
1616 { OPENSSL_free(comp); }
1617#endif
1618
1619void SSL_CTX_free(SSL_CTX *a)
1620 {
1621 int i;
1622
1623 if (a == NULL) return;
1624
1625 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1626#ifdef REF_PRINT
1627 REF_PRINT("SSL_CTX",a);
1628#endif
1629 if (i > 0) return;
1630#ifdef REF_CHECK
1631 if (i < 0)
1632 {
1633 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1634 abort(); /* ok */
1635 }
1636#endif
1637
1638 if (a->param)
1639 X509_VERIFY_PARAM_free(a->param);
1640
1641 /*
1642 * Free internal session cache. However: the remove_cb() may reference
1643 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1644 * after the sessions were flushed.
1645 * As the ex_data handling routines might also touch the session cache,
1646 * the most secure solution seems to be: empty (flush) the cache, then
1647 * free ex_data, then finally free the cache.
1648 * (See ticket [openssl.org #212].)
1649 */
1650 if (a->sessions != NULL)
1651 SSL_CTX_flush_sessions(a,0);
1652
1653 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1654
1655 if (a->sessions != NULL)
1656 lh_free(a->sessions);
1657
1658 if (a->cert_store != NULL)
1659 X509_STORE_free(a->cert_store);
1660 if (a->cipher_list != NULL)
1661 sk_SSL_CIPHER_free(a->cipher_list);
1662 if (a->cipher_list_by_id != NULL)
1663 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1664 if (a->cert != NULL)
1665 ssl_cert_free(a->cert);
1666 if (a->client_CA != NULL)
1667 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1668 if (a->extra_certs != NULL)
1669 sk_X509_pop_free(a->extra_certs,X509_free);
1670#if 0 /* This should never be done, since it removes a global database */
1671 if (a->comp_methods != NULL)
1672 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1673#else
1674 a->comp_methods = NULL;
1675#endif
1676#ifndef OPENSSL_NO_ENGINE
1677 if (a->client_cert_engine)
1678 ENGINE_finish(a->client_cert_engine);
1679#endif
1680 OPENSSL_free(a);
1681 }
1682
1683void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1684 {
1685 ctx->default_passwd_callback=cb;
1686 }
1687
1688void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1689 {
1690 ctx->default_passwd_callback_userdata=u;
1691 }
1692
1693void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1694 {
1695 ctx->app_verify_callback=cb;
1696 ctx->app_verify_arg=arg;
1697 }
1698
1699void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1700 {
1701 ctx->verify_mode=mode;
1702 ctx->default_verify_callback=cb;
1703 }
1704
1705void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1706 {
1707 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1708 }
1709
1710void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1711 {
1712 CERT_PKEY *cpk;
1713 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1714 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1715 int rsa_tmp_export,dh_tmp_export,kl;
1716 unsigned long mask,emask;
1717 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1718#ifndef OPENSSL_NO_ECDH
1719 int have_ecdh_tmp;
1720#endif
1721 X509 *x = NULL;
1722 EVP_PKEY *ecc_pkey = NULL;
1723 int signature_nid = 0;
1724
1725 if (c == NULL) return;
1726
1727 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1728
1729#ifndef OPENSSL_NO_RSA
1730 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1731 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1732 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1733#else
1734 rsa_tmp=rsa_tmp_export=0;
1735#endif
1736#ifndef OPENSSL_NO_DH
1737 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1738 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1739 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1740#else
1741 dh_tmp=dh_tmp_export=0;
1742#endif
1743
1744#ifndef OPENSSL_NO_ECDH
1745 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1746#endif
1747 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1748 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1749 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1750 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1751 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1752 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1753 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1754 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1755 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1756 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1757 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1758/* FIX THIS EAY EAY EAY */
1759 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1760 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1761 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1762 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1763 mask=0;
1764 emask=0;
1765
1766#ifdef CIPHER_DEBUG
1767 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1768 rsa_tmp,rsa_tmp_export,dh_tmp,
1769 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1770#endif
1771
1772 if (rsa_enc || (rsa_tmp && rsa_sign))
1773 mask|=SSL_kRSA;
1774 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1775 emask|=SSL_kRSA;
1776
1777#if 0
1778 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1779 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1780 (rsa_enc || rsa_sign || dsa_sign))
1781 mask|=SSL_kEDH;
1782 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1783 (rsa_enc || rsa_sign || dsa_sign))
1784 emask|=SSL_kEDH;
1785#endif
1786
1787 if (dh_tmp_export)
1788 emask|=SSL_kEDH;
1789
1790 if (dh_tmp)
1791 mask|=SSL_kEDH;
1792
1793 if (dh_rsa) mask|=SSL_kDHr;
1794 if (dh_rsa_export) emask|=SSL_kDHr;
1795
1796 if (dh_dsa) mask|=SSL_kDHd;
1797 if (dh_dsa_export) emask|=SSL_kDHd;
1798
1799 if (rsa_enc || rsa_sign)
1800 {
1801 mask|=SSL_aRSA;
1802 emask|=SSL_aRSA;
1803 }
1804
1805 if (dsa_sign)
1806 {
1807 mask|=SSL_aDSS;
1808 emask|=SSL_aDSS;
1809 }
1810
1811 mask|=SSL_aNULL;
1812 emask|=SSL_aNULL;
1813
1814#ifndef OPENSSL_NO_KRB5
1815 mask|=SSL_kKRB5|SSL_aKRB5;
1816 emask|=SSL_kKRB5|SSL_aKRB5;
1817#endif
1818
1819 /* An ECC certificate may be usable for ECDH and/or
1820 * ECDSA cipher suites depending on the key usage extension.
1821 */
1822 if (have_ecc_cert)
1823 {
1824 /* This call populates extension flags (ex_flags) */
1825 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1826 X509_check_purpose(x, -1, 0);
1827 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1828 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1829 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1830 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1831 ecc_pkey = X509_get_pubkey(x);
1832 ecc_pkey_size = (ecc_pkey != NULL) ?
1833 EVP_PKEY_bits(ecc_pkey) : 0;
1834 EVP_PKEY_free(ecc_pkey);
1835 if ((x->sig_alg) && (x->sig_alg->algorithm))
1836 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1837#ifndef OPENSSL_NO_ECDH
1838 if (ecdh_ok)
1839 {
1840 if ((signature_nid == NID_md5WithRSAEncryption) ||
1841 (signature_nid == NID_md4WithRSAEncryption) ||
1842 (signature_nid == NID_md2WithRSAEncryption))
1843 {
1844 mask|=SSL_kECDH|SSL_aRSA;
1845 if (ecc_pkey_size <= 163)
1846 emask|=SSL_kECDH|SSL_aRSA;
1847 }
1848 if (signature_nid == NID_ecdsa_with_SHA1)
1849 {
1850 mask|=SSL_kECDH|SSL_aECDSA;
1851 if (ecc_pkey_size <= 163)
1852 emask|=SSL_kECDH|SSL_aECDSA;
1853 }
1854 }
1855#endif
1856#ifndef OPENSSL_NO_ECDSA
1857 if (ecdsa_ok)
1858 {
1859 mask|=SSL_aECDSA;
1860 emask|=SSL_aECDSA;
1861 }
1862#endif
1863 }
1864
1865#ifndef OPENSSL_NO_ECDH
1866 if (have_ecdh_tmp)
1867 {
1868 mask|=SSL_kECDHE;
1869 emask|=SSL_kECDHE;
1870 }
1871#endif
1872 c->mask=mask;
1873 c->export_mask=emask;
1874 c->valid=1;
1875 }
1876
1877/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1878#define ku_reject(x, usage) \
1879 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1880
1881int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1882 {
1883 unsigned long alg = cs->algorithms;
1884 EVP_PKEY *pkey = NULL;
1885 int keysize = 0;
1886 int signature_nid = 0;
1887
1888 if (SSL_C_IS_EXPORT(cs))
1889 {
1890 /* ECDH key length in export ciphers must be <= 163 bits */
1891 pkey = X509_get_pubkey(x);
1892 if (pkey == NULL) return 0;
1893 keysize = EVP_PKEY_bits(pkey);
1894 EVP_PKEY_free(pkey);
1895 if (keysize > 163) return 0;
1896 }
1897
1898 /* This call populates the ex_flags field correctly */
1899 X509_check_purpose(x, -1, 0);
1900 if ((x->sig_alg) && (x->sig_alg->algorithm))
1901 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1902 if (alg & SSL_kECDH)
1903 {
1904 /* key usage, if present, must allow key agreement */
1905 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1906 {
1907 return 0;
1908 }
1909 if (alg & SSL_aECDSA)
1910 {
1911 /* signature alg must be ECDSA */
1912 if (signature_nid != NID_ecdsa_with_SHA1)
1913 {
1914 return 0;
1915 }
1916 }
1917 if (alg & SSL_aRSA)
1918 {
1919 /* signature alg must be RSA */
1920 if ((signature_nid != NID_md5WithRSAEncryption) &&
1921 (signature_nid != NID_md4WithRSAEncryption) &&
1922 (signature_nid != NID_md2WithRSAEncryption))
1923 {
1924 return 0;
1925 }
1926 }
1927 }
1928 else if (alg & SSL_aECDSA)
1929 {
1930 /* key usage, if present, must allow signing */
1931 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1932 {
1933 return 0;
1934 }
1935 }
1936
1937 return 1; /* all checks are ok */
1938 }
1939
1940/* THIS NEEDS CLEANING UP */
1941X509 *ssl_get_server_send_cert(SSL *s)
1942 {
| 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) 1998-2001 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#ifdef REF_CHECK
120# include <assert.h>
121#endif
122#include <stdio.h>
123#include "ssl_locl.h"
124#include "kssl_lcl.h"
125#include <openssl/objects.h>
126#include <openssl/lhash.h>
127#include <openssl/x509v3.h>
128#include <openssl/rand.h>
129#include <openssl/ocsp.h>
130#ifndef OPENSSL_NO_DH
131#include <openssl/dh.h>
132#endif
133#ifndef OPENSSL_NO_ENGINE
134#include <openssl/engine.h>
135#endif
136
137const char *SSL_version_str=OPENSSL_VERSION_TEXT;
138
139SSL3_ENC_METHOD ssl3_undef_enc_method={
140 /* evil casts, but these functions are only called if there's a library bug */
141 (int (*)(SSL *,int))ssl_undefined_function,
142 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
143 ssl_undefined_function,
144 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
145 (int (*)(SSL*, int))ssl_undefined_function,
146 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function,
147 0, /* finish_mac_length */
148 (int (*)(SSL *, EVP_MD_CTX *, unsigned char *))ssl_undefined_function,
149 NULL, /* client_finished_label */
150 0, /* client_finished_label_len */
151 NULL, /* server_finished_label */
152 0, /* server_finished_label_len */
153 (int (*)(int))ssl_undefined_function
154 };
155
156int SSL_clear(SSL *s)
157 {
158
159 if (s->method == NULL)
160 {
161 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
162 return(0);
163 }
164
165 if (ssl_clear_bad_session(s))
166 {
167 SSL_SESSION_free(s->session);
168 s->session=NULL;
169 }
170
171 s->error=0;
172 s->hit=0;
173 s->shutdown=0;
174
175#if 0 /* Disabled since version 1.10 of this file (early return not
176 * needed because SSL_clear is not called when doing renegotiation) */
177 /* This is set if we are doing dynamic renegotiation so keep
178 * the old cipher. It is sort of a SSL_clear_lite :-) */
179 if (s->new_session) return(1);
180#else
181 if (s->new_session)
182 {
183 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
184 return 0;
185 }
186#endif
187
188 s->type=0;
189
190 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
191
192 s->version=s->method->version;
193 s->client_version=s->version;
194 s->rwstate=SSL_NOTHING;
195 s->rstate=SSL_ST_READ_HEADER;
196#if 0
197 s->read_ahead=s->ctx->read_ahead;
198#endif
199
200 if (s->init_buf != NULL)
201 {
202 BUF_MEM_free(s->init_buf);
203 s->init_buf=NULL;
204 }
205
206 ssl_clear_cipher_ctx(s);
207
208 s->first_packet=0;
209
210#if 1
211 /* Check to see if we were changed into a different method, if
212 * so, revert back if we are not doing session-id reuse. */
213 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
214 {
215 s->method->ssl_free(s);
216 s->method=s->ctx->method;
217 if (!s->method->ssl_new(s))
218 return(0);
219 }
220 else
221#endif
222 s->method->ssl_clear(s);
223 return(1);
224 }
225
226/** Used to change an SSL_CTXs default SSL method type */
227int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
228 {
229 STACK_OF(SSL_CIPHER) *sk;
230
231 ctx->method=meth;
232
233 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
234 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
235 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
236 {
237 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
238 return(0);
239 }
240 return(1);
241 }
242
243SSL *SSL_new(SSL_CTX *ctx)
244 {
245 SSL *s;
246
247 if (ctx == NULL)
248 {
249 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
250 return(NULL);
251 }
252 if (ctx->method == NULL)
253 {
254 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
255 return(NULL);
256 }
257
258 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
259 if (s == NULL) goto err;
260 memset(s,0,sizeof(SSL));
261
262#ifndef OPENSSL_NO_KRB5
263 s->kssl_ctx = kssl_ctx_new();
264#endif /* OPENSSL_NO_KRB5 */
265
266 s->options=ctx->options;
267 s->mode=ctx->mode;
268 s->max_cert_list=ctx->max_cert_list;
269
270 if (ctx->cert != NULL)
271 {
272 /* Earlier library versions used to copy the pointer to
273 * the CERT, not its contents; only when setting new
274 * parameters for the per-SSL copy, ssl_cert_new would be
275 * called (and the direct reference to the per-SSL_CTX
276 * settings would be lost, but those still were indirectly
277 * accessed for various purposes, and for that reason they
278 * used to be known as s->ctx->default_cert).
279 * Now we don't look at the SSL_CTX's CERT after having
280 * duplicated it once. */
281
282 s->cert = ssl_cert_dup(ctx->cert);
283 if (s->cert == NULL)
284 goto err;
285 }
286 else
287 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
288
289 s->read_ahead=ctx->read_ahead;
290 s->msg_callback=ctx->msg_callback;
291 s->msg_callback_arg=ctx->msg_callback_arg;
292 s->verify_mode=ctx->verify_mode;
293#if 0
294 s->verify_depth=ctx->verify_depth;
295#endif
296 s->sid_ctx_length=ctx->sid_ctx_length;
297 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
298 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
299 s->verify_callback=ctx->default_verify_callback;
300 s->generate_session_id=ctx->generate_session_id;
301
302 s->param = X509_VERIFY_PARAM_new();
303 if (!s->param)
304 goto err;
305 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
306#if 0
307 s->purpose = ctx->purpose;
308 s->trust = ctx->trust;
309#endif
310 s->quiet_shutdown=ctx->quiet_shutdown;
311
312 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
313 s->ctx=ctx;
314#ifndef OPENSSL_NO_TLSEXT
315 s->tlsext_debug_cb = 0;
316 s->tlsext_debug_arg = NULL;
317 s->tlsext_ticket_expected = 0;
318 s->tlsext_status_type = -1;
319 s->tlsext_status_expected = 0;
320 s->tlsext_ocsp_ids = NULL;
321 s->tlsext_ocsp_exts = NULL;
322 s->tlsext_ocsp_resp = NULL;
323 s->tlsext_ocsp_resplen = -1;
324 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
325 s->initial_ctx=ctx;
326#endif
327 s->verify_result=X509_V_OK;
328
329 s->method=ctx->method;
330
331 if (!s->method->ssl_new(s))
332 goto err;
333
334 s->references=1;
335 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
336
337 SSL_clear(s);
338
339 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
340
341 return(s);
342err:
343 if (s != NULL)
344 {
345 if (s->cert != NULL)
346 ssl_cert_free(s->cert);
347 if (s->ctx != NULL)
348 SSL_CTX_free(s->ctx); /* decrement reference count */
349 OPENSSL_free(s);
350 }
351 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
352 return(NULL);
353 }
354
355int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
356 unsigned int sid_ctx_len)
357 {
358 if(sid_ctx_len > sizeof ctx->sid_ctx)
359 {
360 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
361 return 0;
362 }
363 ctx->sid_ctx_length=sid_ctx_len;
364 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
365
366 return 1;
367 }
368
369int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
370 unsigned int sid_ctx_len)
371 {
372 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
373 {
374 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
375 return 0;
376 }
377 ssl->sid_ctx_length=sid_ctx_len;
378 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
379
380 return 1;
381 }
382
383int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
384 {
385 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
386 ctx->generate_session_id = cb;
387 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
388 return 1;
389 }
390
391int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
392 {
393 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
394 ssl->generate_session_id = cb;
395 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
396 return 1;
397 }
398
399int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
400 unsigned int id_len)
401 {
402 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
403 * we can "construct" a session to give us the desired check - ie. to
404 * find if there's a session in the hash table that would conflict with
405 * any new session built out of this id/id_len and the ssl_version in
406 * use by this SSL. */
407 SSL_SESSION r, *p;
408
409 if(id_len > sizeof r.session_id)
410 return 0;
411
412 r.ssl_version = ssl->version;
413 r.session_id_length = id_len;
414 memcpy(r.session_id, id, id_len);
415 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
416 * callback is calling us to check the uniqueness of a shorter ID, it
417 * must be compared as a padded-out ID because that is what it will be
418 * converted to when the callback has finished choosing it. */
419 if((r.ssl_version == SSL2_VERSION) &&
420 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
421 {
422 memset(r.session_id + id_len, 0,
423 SSL2_SSL_SESSION_ID_LENGTH - id_len);
424 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
425 }
426
427 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
428 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
429 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
430 return (p != NULL);
431 }
432
433int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
434 {
435 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
436 }
437
438int SSL_set_purpose(SSL *s, int purpose)
439 {
440 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
441 }
442
443int SSL_CTX_set_trust(SSL_CTX *s, int trust)
444 {
445 return X509_VERIFY_PARAM_set_trust(s->param, trust);
446 }
447
448int SSL_set_trust(SSL *s, int trust)
449 {
450 return X509_VERIFY_PARAM_set_trust(s->param, trust);
451 }
452
453void SSL_free(SSL *s)
454 {
455 int i;
456
457 if(s == NULL)
458 return;
459
460 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
461#ifdef REF_PRINT
462 REF_PRINT("SSL",s);
463#endif
464 if (i > 0) return;
465#ifdef REF_CHECK
466 if (i < 0)
467 {
468 fprintf(stderr,"SSL_free, bad reference count\n");
469 abort(); /* ok */
470 }
471#endif
472
473 if (s->param)
474 X509_VERIFY_PARAM_free(s->param);
475
476 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
477
478 if (s->bbio != NULL)
479 {
480 /* If the buffering BIO is in place, pop it off */
481 if (s->bbio == s->wbio)
482 {
483 s->wbio=BIO_pop(s->wbio);
484 }
485 BIO_free(s->bbio);
486 s->bbio=NULL;
487 }
488 if (s->rbio != NULL)
489 BIO_free_all(s->rbio);
490 if ((s->wbio != NULL) && (s->wbio != s->rbio))
491 BIO_free_all(s->wbio);
492
493 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
494
495 /* add extra stuff */
496 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
497 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
498
499 /* Make the next call work :-) */
500 if (s->session != NULL)
501 {
502 ssl_clear_bad_session(s);
503 SSL_SESSION_free(s->session);
504 }
505
506 ssl_clear_cipher_ctx(s);
507
508 if (s->cert != NULL) ssl_cert_free(s->cert);
509 /* Free up if allocated */
510
511#ifndef OPENSSL_NO_TLSEXT
512 if (s->tlsext_hostname)
513 OPENSSL_free(s->tlsext_hostname);
514 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
515 if (s->tlsext_ocsp_exts)
516 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
517 X509_EXTENSION_free);
518 if (s->tlsext_ocsp_ids)
519 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
520 if (s->tlsext_ocsp_resp)
521 OPENSSL_free(s->tlsext_ocsp_resp);
522#endif
523 if (s->client_CA != NULL)
524 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
525
526 if (s->method != NULL) s->method->ssl_free(s);
527
528 if (s->ctx) SSL_CTX_free(s->ctx);
529
530#ifndef OPENSSL_NO_KRB5
531 if (s->kssl_ctx != NULL)
532 kssl_ctx_free(s->kssl_ctx);
533#endif /* OPENSSL_NO_KRB5 */
534
535 OPENSSL_free(s);
536 }
537
538void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
539 {
540 /* If the output buffering BIO is still in place, remove it
541 */
542 if (s->bbio != NULL)
543 {
544 if (s->wbio == s->bbio)
545 {
546 s->wbio=s->wbio->next_bio;
547 s->bbio->next_bio=NULL;
548 }
549 }
550 if ((s->rbio != NULL) && (s->rbio != rbio))
551 BIO_free_all(s->rbio);
552 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
553 BIO_free_all(s->wbio);
554 s->rbio=rbio;
555 s->wbio=wbio;
556 }
557
558BIO *SSL_get_rbio(const SSL *s)
559 { return(s->rbio); }
560
561BIO *SSL_get_wbio(const SSL *s)
562 { return(s->wbio); }
563
564int SSL_get_fd(const SSL *s)
565 {
566 return(SSL_get_rfd(s));
567 }
568
569int SSL_get_rfd(const SSL *s)
570 {
571 int ret= -1;
572 BIO *b,*r;
573
574 b=SSL_get_rbio(s);
575 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
576 if (r != NULL)
577 BIO_get_fd(r,&ret);
578 return(ret);
579 }
580
581int SSL_get_wfd(const SSL *s)
582 {
583 int ret= -1;
584 BIO *b,*r;
585
586 b=SSL_get_wbio(s);
587 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
588 if (r != NULL)
589 BIO_get_fd(r,&ret);
590 return(ret);
591 }
592
593#ifndef OPENSSL_NO_SOCK
594int SSL_set_fd(SSL *s,int fd)
595 {
596 int ret=0;
597 BIO *bio=NULL;
598
599 bio=BIO_new(BIO_s_socket());
600
601 if (bio == NULL)
602 {
603 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
604 goto err;
605 }
606 BIO_set_fd(bio,fd,BIO_NOCLOSE);
607 SSL_set_bio(s,bio,bio);
608 ret=1;
609err:
610 return(ret);
611 }
612
613int SSL_set_wfd(SSL *s,int fd)
614 {
615 int ret=0;
616 BIO *bio=NULL;
617
618 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
619 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
620 {
621 bio=BIO_new(BIO_s_socket());
622
623 if (bio == NULL)
624 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
625 BIO_set_fd(bio,fd,BIO_NOCLOSE);
626 SSL_set_bio(s,SSL_get_rbio(s),bio);
627 }
628 else
629 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
630 ret=1;
631err:
632 return(ret);
633 }
634
635int SSL_set_rfd(SSL *s,int fd)
636 {
637 int ret=0;
638 BIO *bio=NULL;
639
640 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
641 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
642 {
643 bio=BIO_new(BIO_s_socket());
644
645 if (bio == NULL)
646 {
647 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
648 goto err;
649 }
650 BIO_set_fd(bio,fd,BIO_NOCLOSE);
651 SSL_set_bio(s,bio,SSL_get_wbio(s));
652 }
653 else
654 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
655 ret=1;
656err:
657 return(ret);
658 }
659#endif
660
661
662/* return length of latest Finished message we sent, copy to 'buf' */
663size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
664 {
665 size_t ret = 0;
666
667 if (s->s3 != NULL)
668 {
669 ret = s->s3->tmp.finish_md_len;
670 if (count > ret)
671 count = ret;
672 memcpy(buf, s->s3->tmp.finish_md, count);
673 }
674 return ret;
675 }
676
677/* return length of latest Finished message we expected, copy to 'buf' */
678size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
679 {
680 size_t ret = 0;
681
682 if (s->s3 != NULL)
683 {
684 ret = s->s3->tmp.peer_finish_md_len;
685 if (count > ret)
686 count = ret;
687 memcpy(buf, s->s3->tmp.peer_finish_md, count);
688 }
689 return ret;
690 }
691
692
693int SSL_get_verify_mode(const SSL *s)
694 {
695 return(s->verify_mode);
696 }
697
698int SSL_get_verify_depth(const SSL *s)
699 {
700 return X509_VERIFY_PARAM_get_depth(s->param);
701 }
702
703int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
704 {
705 return(s->verify_callback);
706 }
707
708int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
709 {
710 return(ctx->verify_mode);
711 }
712
713int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
714 {
715 return X509_VERIFY_PARAM_get_depth(ctx->param);
716 }
717
718int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
719 {
720 return(ctx->default_verify_callback);
721 }
722
723void SSL_set_verify(SSL *s,int mode,
724 int (*callback)(int ok,X509_STORE_CTX *ctx))
725 {
726 s->verify_mode=mode;
727 if (callback != NULL)
728 s->verify_callback=callback;
729 }
730
731void SSL_set_verify_depth(SSL *s,int depth)
732 {
733 X509_VERIFY_PARAM_set_depth(s->param, depth);
734 }
735
736void SSL_set_read_ahead(SSL *s,int yes)
737 {
738 s->read_ahead=yes;
739 }
740
741int SSL_get_read_ahead(const SSL *s)
742 {
743 return(s->read_ahead);
744 }
745
746int SSL_pending(const SSL *s)
747 {
748 /* SSL_pending cannot work properly if read-ahead is enabled
749 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
750 * and it is impossible to fix since SSL_pending cannot report
751 * errors that may be observed while scanning the new data.
752 * (Note that SSL_pending() is often used as a boolean value,
753 * so we'd better not return -1.)
754 */
755 return(s->method->ssl_pending(s));
756 }
757
758X509 *SSL_get_peer_certificate(const SSL *s)
759 {
760 X509 *r;
761
762 if ((s == NULL) || (s->session == NULL))
763 r=NULL;
764 else
765 r=s->session->peer;
766
767 if (r == NULL) return(r);
768
769 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
770
771 return(r);
772 }
773
774STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
775 {
776 STACK_OF(X509) *r;
777
778 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
779 r=NULL;
780 else
781 r=s->session->sess_cert->cert_chain;
782
783 /* If we are a client, cert_chain includes the peer's own
784 * certificate; if we are a server, it does not. */
785
786 return(r);
787 }
788
789/* Now in theory, since the calling process own 't' it should be safe to
790 * modify. We need to be able to read f without being hassled */
791void SSL_copy_session_id(SSL *t,const SSL *f)
792 {
793 CERT *tmp;
794
795 /* Do we need to to SSL locking? */
796 SSL_set_session(t,SSL_get_session(f));
797
798 /* what if we are setup as SSLv2 but want to talk SSLv3 or
799 * vice-versa */
800 if (t->method != f->method)
801 {
802 t->method->ssl_free(t); /* cleanup current */
803 t->method=f->method; /* change method */
804 t->method->ssl_new(t); /* setup new */
805 }
806
807 tmp=t->cert;
808 if (f->cert != NULL)
809 {
810 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
811 t->cert=f->cert;
812 }
813 else
814 t->cert=NULL;
815 if (tmp != NULL) ssl_cert_free(tmp);
816 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
817 }
818
819/* Fix this so it checks all the valid key/cert options */
820int SSL_CTX_check_private_key(const SSL_CTX *ctx)
821 {
822 if ( (ctx == NULL) ||
823 (ctx->cert == NULL) ||
824 (ctx->cert->key->x509 == NULL))
825 {
826 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
827 return(0);
828 }
829 if (ctx->cert->key->privatekey == NULL)
830 {
831 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
832 return(0);
833 }
834 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
835 }
836
837/* Fix this function so that it takes an optional type parameter */
838int SSL_check_private_key(const SSL *ssl)
839 {
840 if (ssl == NULL)
841 {
842 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
843 return(0);
844 }
845 if (ssl->cert == NULL)
846 {
847 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
848 return 0;
849 }
850 if (ssl->cert->key->x509 == NULL)
851 {
852 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
853 return(0);
854 }
855 if (ssl->cert->key->privatekey == NULL)
856 {
857 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
858 return(0);
859 }
860 return(X509_check_private_key(ssl->cert->key->x509,
861 ssl->cert->key->privatekey));
862 }
863
864int SSL_accept(SSL *s)
865 {
866 if (s->handshake_func == 0)
867 /* Not properly initialized yet */
868 SSL_set_accept_state(s);
869
870 return(s->method->ssl_accept(s));
871 }
872
873int SSL_connect(SSL *s)
874 {
875 if (s->handshake_func == 0)
876 /* Not properly initialized yet */
877 SSL_set_connect_state(s);
878
879 return(s->method->ssl_connect(s));
880 }
881
882long SSL_get_default_timeout(const SSL *s)
883 {
884 return(s->method->get_timeout());
885 }
886
887int SSL_read(SSL *s,void *buf,int num)
888 {
889 if (s->handshake_func == 0)
890 {
891 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
892 return -1;
893 }
894
895 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
896 {
897 s->rwstate=SSL_NOTHING;
898 return(0);
899 }
900 return(s->method->ssl_read(s,buf,num));
901 }
902
903int SSL_peek(SSL *s,void *buf,int num)
904 {
905 if (s->handshake_func == 0)
906 {
907 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
908 return -1;
909 }
910
911 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
912 {
913 return(0);
914 }
915 return(s->method->ssl_peek(s,buf,num));
916 }
917
918int SSL_write(SSL *s,const void *buf,int num)
919 {
920 if (s->handshake_func == 0)
921 {
922 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
923 return -1;
924 }
925
926 if (s->shutdown & SSL_SENT_SHUTDOWN)
927 {
928 s->rwstate=SSL_NOTHING;
929 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
930 return(-1);
931 }
932 return(s->method->ssl_write(s,buf,num));
933 }
934
935int SSL_shutdown(SSL *s)
936 {
937 /* Note that this function behaves differently from what one might
938 * expect. Return values are 0 for no success (yet),
939 * 1 for success; but calling it once is usually not enough,
940 * even if blocking I/O is used (see ssl3_shutdown).
941 */
942
943 if (s->handshake_func == 0)
944 {
945 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
946 return -1;
947 }
948
949 if ((s != NULL) && !SSL_in_init(s))
950 return(s->method->ssl_shutdown(s));
951 else
952 return(1);
953 }
954
955int SSL_renegotiate(SSL *s)
956 {
957 if (s->new_session == 0)
958 {
959 s->new_session=1;
960 }
961 return(s->method->ssl_renegotiate(s));
962 }
963
964int SSL_renegotiate_pending(SSL *s)
965 {
966 /* becomes true when negotiation is requested;
967 * false again once a handshake has finished */
968 return (s->new_session != 0);
969 }
970
971long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
972 {
973 long l;
974
975 switch (cmd)
976 {
977 case SSL_CTRL_GET_READ_AHEAD:
978 return(s->read_ahead);
979 case SSL_CTRL_SET_READ_AHEAD:
980 l=s->read_ahead;
981 s->read_ahead=larg;
982 return(l);
983
984 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
985 s->msg_callback_arg = parg;
986 return 1;
987
988 case SSL_CTRL_OPTIONS:
989 return(s->options|=larg);
990 case SSL_CTRL_CLEAR_OPTIONS:
991 return(s->options&=~larg);
992 case SSL_CTRL_MODE:
993 return(s->mode|=larg);
994 case SSL_CTRL_CLEAR_MODE:
995 return(s->mode &=~larg);
996 case SSL_CTRL_GET_MAX_CERT_LIST:
997 return(s->max_cert_list);
998 case SSL_CTRL_SET_MAX_CERT_LIST:
999 l=s->max_cert_list;
1000 s->max_cert_list=larg;
1001 return(l);
1002 case SSL_CTRL_SET_MTU:
1003 if (SSL_version(s) == DTLS1_VERSION ||
1004 SSL_version(s) == DTLS1_BAD_VER)
1005 {
1006 s->d1->mtu = larg;
1007 return larg;
1008 }
1009 return 0;
1010 case SSL_CTRL_GET_RI_SUPPORT:
1011 if (s->s3)
1012 return s->s3->send_connection_binding;
1013 else return 0;
1014 default:
1015 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1016 }
1017 }
1018
1019long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1020 {
1021 switch(cmd)
1022 {
1023 case SSL_CTRL_SET_MSG_CALLBACK:
1024 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1025 return 1;
1026
1027 default:
1028 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1029 }
1030 }
1031
1032struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
1033 {
1034 return ctx->sessions;
1035 }
1036
1037long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1038 {
1039 long l;
1040
1041 switch (cmd)
1042 {
1043 case SSL_CTRL_GET_READ_AHEAD:
1044 return(ctx->read_ahead);
1045 case SSL_CTRL_SET_READ_AHEAD:
1046 l=ctx->read_ahead;
1047 ctx->read_ahead=larg;
1048 return(l);
1049
1050 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1051 ctx->msg_callback_arg = parg;
1052 return 1;
1053
1054 case SSL_CTRL_GET_MAX_CERT_LIST:
1055 return(ctx->max_cert_list);
1056 case SSL_CTRL_SET_MAX_CERT_LIST:
1057 l=ctx->max_cert_list;
1058 ctx->max_cert_list=larg;
1059 return(l);
1060
1061 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1062 l=ctx->session_cache_size;
1063 ctx->session_cache_size=larg;
1064 return(l);
1065 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1066 return(ctx->session_cache_size);
1067 case SSL_CTRL_SET_SESS_CACHE_MODE:
1068 l=ctx->session_cache_mode;
1069 ctx->session_cache_mode=larg;
1070 return(l);
1071 case SSL_CTRL_GET_SESS_CACHE_MODE:
1072 return(ctx->session_cache_mode);
1073
1074 case SSL_CTRL_SESS_NUMBER:
1075 return(ctx->sessions->num_items);
1076 case SSL_CTRL_SESS_CONNECT:
1077 return(ctx->stats.sess_connect);
1078 case SSL_CTRL_SESS_CONNECT_GOOD:
1079 return(ctx->stats.sess_connect_good);
1080 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1081 return(ctx->stats.sess_connect_renegotiate);
1082 case SSL_CTRL_SESS_ACCEPT:
1083 return(ctx->stats.sess_accept);
1084 case SSL_CTRL_SESS_ACCEPT_GOOD:
1085 return(ctx->stats.sess_accept_good);
1086 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1087 return(ctx->stats.sess_accept_renegotiate);
1088 case SSL_CTRL_SESS_HIT:
1089 return(ctx->stats.sess_hit);
1090 case SSL_CTRL_SESS_CB_HIT:
1091 return(ctx->stats.sess_cb_hit);
1092 case SSL_CTRL_SESS_MISSES:
1093 return(ctx->stats.sess_miss);
1094 case SSL_CTRL_SESS_TIMEOUTS:
1095 return(ctx->stats.sess_timeout);
1096 case SSL_CTRL_SESS_CACHE_FULL:
1097 return(ctx->stats.sess_cache_full);
1098 case SSL_CTRL_OPTIONS:
1099 return(ctx->options|=larg);
1100 case SSL_CTRL_CLEAR_OPTIONS:
1101 return(ctx->options&=~larg);
1102 case SSL_CTRL_MODE:
1103 return(ctx->mode|=larg);
1104 case SSL_CTRL_CLEAR_MODE:
1105 return(ctx->mode&=~larg);
1106 default:
1107 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1108 }
1109 }
1110
1111long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1112 {
1113 switch(cmd)
1114 {
1115 case SSL_CTRL_SET_MSG_CALLBACK:
1116 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1117 return 1;
1118
1119 default:
1120 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1121 }
1122 }
1123
1124int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1125 {
1126 long l;
1127
1128 l=a->id-b->id;
1129 if (l == 0L)
1130 return(0);
1131 else
1132 return((l > 0)?1:-1);
1133 }
1134
1135int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1136 const SSL_CIPHER * const *bp)
1137 {
1138 long l;
1139
1140 l=(*ap)->id-(*bp)->id;
1141 if (l == 0L)
1142 return(0);
1143 else
1144 return((l > 0)?1:-1);
1145 }
1146
1147/** return a STACK of the ciphers available for the SSL and in order of
1148 * preference */
1149STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1150 {
1151 if (s != NULL)
1152 {
1153 if (s->cipher_list != NULL)
1154 {
1155 return(s->cipher_list);
1156 }
1157 else if ((s->ctx != NULL) &&
1158 (s->ctx->cipher_list != NULL))
1159 {
1160 return(s->ctx->cipher_list);
1161 }
1162 }
1163 return(NULL);
1164 }
1165
1166/** return a STACK of the ciphers available for the SSL and in order of
1167 * algorithm id */
1168STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1169 {
1170 if (s != NULL)
1171 {
1172 if (s->cipher_list_by_id != NULL)
1173 {
1174 return(s->cipher_list_by_id);
1175 }
1176 else if ((s->ctx != NULL) &&
1177 (s->ctx->cipher_list_by_id != NULL))
1178 {
1179 return(s->ctx->cipher_list_by_id);
1180 }
1181 }
1182 return(NULL);
1183 }
1184
1185/** The old interface to get the same thing as SSL_get_ciphers() */
1186const char *SSL_get_cipher_list(const SSL *s,int n)
1187 {
1188 SSL_CIPHER *c;
1189 STACK_OF(SSL_CIPHER) *sk;
1190
1191 if (s == NULL) return(NULL);
1192 sk=SSL_get_ciphers(s);
1193 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1194 return(NULL);
1195 c=sk_SSL_CIPHER_value(sk,n);
1196 if (c == NULL) return(NULL);
1197 return(c->name);
1198 }
1199
1200/** specify the ciphers to be used by default by the SSL_CTX */
1201int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1202 {
1203 STACK_OF(SSL_CIPHER) *sk;
1204
1205 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1206 &ctx->cipher_list_by_id,str);
1207 /* ssl_create_cipher_list may return an empty stack if it
1208 * was unable to find a cipher matching the given rule string
1209 * (for example if the rule string specifies a cipher which
1210 * has been disabled). This is not an error as far as
1211 * ssl_create_cipher_list is concerned, and hence
1212 * ctx->cipher_list and ctx->cipher_list_by_id has been
1213 * updated. */
1214 if (sk == NULL)
1215 return 0;
1216 else if (sk_SSL_CIPHER_num(sk) == 0)
1217 {
1218 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1219 return 0;
1220 }
1221 return 1;
1222 }
1223
1224/** specify the ciphers to be used by the SSL */
1225int SSL_set_cipher_list(SSL *s,const char *str)
1226 {
1227 STACK_OF(SSL_CIPHER) *sk;
1228
1229 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1230 &s->cipher_list_by_id,str);
1231 /* see comment in SSL_CTX_set_cipher_list */
1232 if (sk == NULL)
1233 return 0;
1234 else if (sk_SSL_CIPHER_num(sk) == 0)
1235 {
1236 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1237 return 0;
1238 }
1239 return 1;
1240 }
1241
1242/* works well for SSLv2, not so good for SSLv3 */
1243char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1244 {
1245 char *p;
1246 STACK_OF(SSL_CIPHER) *sk;
1247 SSL_CIPHER *c;
1248 int i;
1249
1250 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1251 (len < 2))
1252 return(NULL);
1253
1254 p=buf;
1255 sk=s->session->ciphers;
1256 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1257 {
1258 int n;
1259
1260 c=sk_SSL_CIPHER_value(sk,i);
1261 n=strlen(c->name);
1262 if (n+1 > len)
1263 {
1264 if (p != buf)
1265 --p;
1266 *p='\0';
1267 return buf;
1268 }
1269 strcpy(p,c->name);
1270 p+=n;
1271 *(p++)=':';
1272 len-=n+1;
1273 }
1274 p[-1]='\0';
1275 return(buf);
1276 }
1277
1278int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1279 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1280 {
1281 int i,j=0;
1282 SSL_CIPHER *c;
1283 unsigned char *q;
1284#ifndef OPENSSL_NO_KRB5
1285 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1286#endif /* OPENSSL_NO_KRB5 */
1287
1288 if (sk == NULL) return(0);
1289 q=p;
1290
1291 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1292 {
1293 c=sk_SSL_CIPHER_value(sk,i);
1294#ifndef OPENSSL_NO_KRB5
1295 if ((c->algorithms & SSL_KRB5) && nokrb5)
1296 continue;
1297#endif /* OPENSSL_NO_KRB5 */
1298
1299 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1300 p+=j;
1301 }
1302 /* If p == q, no ciphers and caller indicates an error. Otherwise
1303 * add SCSV if not renegotiating.
1304 */
1305 if (p != q && !s->new_session)
1306 {
1307 static SSL_CIPHER scsv =
1308 {
1309 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0,
1310 };
1311 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1312 p+=j;
1313#ifdef OPENSSL_RI_DEBUG
1314 fprintf(stderr, "SCSV sent by client\n");
1315#endif
1316 }
1317
1318 return(p-q);
1319 }
1320
1321STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1322 STACK_OF(SSL_CIPHER) **skp)
1323 {
1324 SSL_CIPHER *c;
1325 STACK_OF(SSL_CIPHER) *sk;
1326 int i,n;
1327 if (s->s3)
1328 s->s3->send_connection_binding = 0;
1329
1330 n=ssl_put_cipher_by_char(s,NULL,NULL);
1331 if ((num%n) != 0)
1332 {
1333 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1334 return(NULL);
1335 }
1336 if ((skp == NULL) || (*skp == NULL))
1337 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1338 else
1339 {
1340 sk= *skp;
1341 sk_SSL_CIPHER_zero(sk);
1342 }
1343
1344 for (i=0; i<num; i+=n)
1345 {
1346 /* Check for SCSV */
1347 if (s->s3 && (n != 3 || !p[0]) &&
1348 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1349 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1350 {
1351 /* SCSV fatal if renegotiating */
1352 if (s->new_session)
1353 {
1354 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1355 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1356 goto err;
1357 }
1358 s->s3->send_connection_binding = 1;
1359 p += n;
1360#ifdef OPENSSL_RI_DEBUG
1361 fprintf(stderr, "SCSV received by server\n");
1362#endif
1363 continue;
1364 }
1365
1366 c=ssl_get_cipher_by_char(s,p);
1367 p+=n;
1368 if (c != NULL)
1369 {
1370 if (!sk_SSL_CIPHER_push(sk,c))
1371 {
1372 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1373 goto err;
1374 }
1375 }
1376 }
1377
1378 if (skp != NULL)
1379 *skp=sk;
1380 return(sk);
1381err:
1382 if ((skp == NULL) || (*skp == NULL))
1383 sk_SSL_CIPHER_free(sk);
1384 return(NULL);
1385 }
1386
1387#ifndef OPENSSL_NO_TLSEXT
1388/** return a servername extension value if provided in Client Hello, or NULL.
1389 * So far, only host_name types are defined (RFC 3546).
1390 */
1391
1392const char *SSL_get_servername(const SSL *s, const int type)
1393 {
1394 if (type != TLSEXT_NAMETYPE_host_name)
1395 return NULL;
1396
1397 return s->session && !s->tlsext_hostname ?
1398 s->session->tlsext_hostname :
1399 s->tlsext_hostname;
1400 }
1401
1402int SSL_get_servername_type(const SSL *s)
1403 {
1404 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1405 return TLSEXT_NAMETYPE_host_name;
1406 return -1;
1407 }
1408#endif
1409
1410unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
1411 {
1412 unsigned long l;
1413
1414 l=(unsigned long)
1415 ((unsigned int) a->session_id[0] )|
1416 ((unsigned int) a->session_id[1]<< 8L)|
1417 ((unsigned long)a->session_id[2]<<16L)|
1418 ((unsigned long)a->session_id[3]<<24L);
1419 return(l);
1420 }
1421
1422/* NB: If this function (or indeed the hash function which uses a sort of
1423 * coarser function than this one) is changed, ensure
1424 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1425 * able to construct an SSL_SESSION that will collide with any existing session
1426 * with a matching session ID. */
1427int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1428 {
1429 if (a->ssl_version != b->ssl_version)
1430 return(1);
1431 if (a->session_id_length != b->session_id_length)
1432 return(1);
1433 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1434 }
1435
1436/* These wrapper functions should remain rather than redeclaring
1437 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1438 * variable. The reason is that the functions aren't static, they're exposed via
1439 * ssl.h. */
1440static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1441static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1442
1443SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1444 {
1445 SSL_CTX *ret=NULL;
1446
1447 if (meth == NULL)
1448 {
1449 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1450 return(NULL);
1451 }
1452
1453#ifdef OPENSSL_FIPS
1454 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1455 {
1456 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1457 return NULL;
1458 }
1459#endif
1460
1461 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1462 {
1463 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1464 goto err;
1465 }
1466 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1467 if (ret == NULL)
1468 goto err;
1469
1470 memset(ret,0,sizeof(SSL_CTX));
1471
1472 ret->method=meth;
1473
1474 ret->cert_store=NULL;
1475 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1476 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1477 ret->session_cache_head=NULL;
1478 ret->session_cache_tail=NULL;
1479
1480 /* We take the system default */
1481 ret->session_timeout=meth->get_timeout();
1482
1483 ret->new_session_cb=0;
1484 ret->remove_session_cb=0;
1485 ret->get_session_cb=0;
1486 ret->generate_session_id=0;
1487
1488 memset((char *)&ret->stats,0,sizeof(ret->stats));
1489
1490 ret->references=1;
1491 ret->quiet_shutdown=0;
1492
1493/* ret->cipher=NULL;*/
1494/* ret->s2->challenge=NULL;
1495 ret->master_key=NULL;
1496 ret->key_arg=NULL;
1497 ret->s2->conn_id=NULL; */
1498
1499 ret->info_callback=NULL;
1500
1501 ret->app_verify_callback=0;
1502 ret->app_verify_arg=NULL;
1503
1504 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1505 ret->read_ahead=0;
1506 ret->msg_callback=0;
1507 ret->msg_callback_arg=NULL;
1508 ret->verify_mode=SSL_VERIFY_NONE;
1509#if 0
1510 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1511#endif
1512 ret->sid_ctx_length=0;
1513 ret->default_verify_callback=NULL;
1514 if ((ret->cert=ssl_cert_new()) == NULL)
1515 goto err;
1516
1517 ret->default_passwd_callback=0;
1518 ret->default_passwd_callback_userdata=NULL;
1519 ret->client_cert_cb=0;
1520 ret->app_gen_cookie_cb=0;
1521 ret->app_verify_cookie_cb=0;
1522
1523 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1524 LHASH_COMP_FN(SSL_SESSION_cmp));
1525 if (ret->sessions == NULL) goto err;
1526 ret->cert_store=X509_STORE_new();
1527 if (ret->cert_store == NULL) goto err;
1528
1529 ssl_create_cipher_list(ret->method,
1530 &ret->cipher_list,&ret->cipher_list_by_id,
1531 SSL_DEFAULT_CIPHER_LIST);
1532 if (ret->cipher_list == NULL
1533 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1534 {
1535 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1536 goto err2;
1537 }
1538
1539 ret->param = X509_VERIFY_PARAM_new();
1540 if (!ret->param)
1541 goto err;
1542
1543 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1544 {
1545 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1546 goto err2;
1547 }
1548 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1549 {
1550 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1551 goto err2;
1552 }
1553 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1554 {
1555 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1556 goto err2;
1557 }
1558
1559 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1560 goto err;
1561
1562 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1563
1564 ret->extra_certs=NULL;
1565 ret->comp_methods=SSL_COMP_get_compression_methods();
1566
1567#ifndef OPENSSL_NO_TLSEXT
1568 ret->tlsext_servername_callback = 0;
1569 ret->tlsext_servername_arg = NULL;
1570 /* Setup RFC4507 ticket keys */
1571 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1572 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1573 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1574 ret->options |= SSL_OP_NO_TICKET;
1575
1576 ret->tlsext_status_cb = 0;
1577 ret->tlsext_status_arg = NULL;
1578
1579#endif
1580
1581#ifndef OPENSSL_NO_ENGINE
1582 ret->client_cert_engine = NULL;
1583#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1584#define eng_strx(x) #x
1585#define eng_str(x) eng_strx(x)
1586 /* Use specific client engine automatically... ignore errors */
1587 {
1588 ENGINE *eng;
1589 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1590 if (!eng)
1591 {
1592 ERR_clear_error();
1593 ENGINE_load_builtin_engines();
1594 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1595 }
1596 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1597 ERR_clear_error();
1598 }
1599#endif
1600#endif
1601 /* Default is to connect to non-RI servers. When RI is more widely
1602 * deployed might change this.
1603 */
1604 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1605
1606 return(ret);
1607err:
1608 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1609err2:
1610 if (ret != NULL) SSL_CTX_free(ret);
1611 return(NULL);
1612 }
1613
1614#if 0
1615static void SSL_COMP_free(SSL_COMP *comp)
1616 { OPENSSL_free(comp); }
1617#endif
1618
1619void SSL_CTX_free(SSL_CTX *a)
1620 {
1621 int i;
1622
1623 if (a == NULL) return;
1624
1625 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1626#ifdef REF_PRINT
1627 REF_PRINT("SSL_CTX",a);
1628#endif
1629 if (i > 0) return;
1630#ifdef REF_CHECK
1631 if (i < 0)
1632 {
1633 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1634 abort(); /* ok */
1635 }
1636#endif
1637
1638 if (a->param)
1639 X509_VERIFY_PARAM_free(a->param);
1640
1641 /*
1642 * Free internal session cache. However: the remove_cb() may reference
1643 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1644 * after the sessions were flushed.
1645 * As the ex_data handling routines might also touch the session cache,
1646 * the most secure solution seems to be: empty (flush) the cache, then
1647 * free ex_data, then finally free the cache.
1648 * (See ticket [openssl.org #212].)
1649 */
1650 if (a->sessions != NULL)
1651 SSL_CTX_flush_sessions(a,0);
1652
1653 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1654
1655 if (a->sessions != NULL)
1656 lh_free(a->sessions);
1657
1658 if (a->cert_store != NULL)
1659 X509_STORE_free(a->cert_store);
1660 if (a->cipher_list != NULL)
1661 sk_SSL_CIPHER_free(a->cipher_list);
1662 if (a->cipher_list_by_id != NULL)
1663 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1664 if (a->cert != NULL)
1665 ssl_cert_free(a->cert);
1666 if (a->client_CA != NULL)
1667 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1668 if (a->extra_certs != NULL)
1669 sk_X509_pop_free(a->extra_certs,X509_free);
1670#if 0 /* This should never be done, since it removes a global database */
1671 if (a->comp_methods != NULL)
1672 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1673#else
1674 a->comp_methods = NULL;
1675#endif
1676#ifndef OPENSSL_NO_ENGINE
1677 if (a->client_cert_engine)
1678 ENGINE_finish(a->client_cert_engine);
1679#endif
1680 OPENSSL_free(a);
1681 }
1682
1683void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1684 {
1685 ctx->default_passwd_callback=cb;
1686 }
1687
1688void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1689 {
1690 ctx->default_passwd_callback_userdata=u;
1691 }
1692
1693void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1694 {
1695 ctx->app_verify_callback=cb;
1696 ctx->app_verify_arg=arg;
1697 }
1698
1699void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1700 {
1701 ctx->verify_mode=mode;
1702 ctx->default_verify_callback=cb;
1703 }
1704
1705void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1706 {
1707 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1708 }
1709
1710void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1711 {
1712 CERT_PKEY *cpk;
1713 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1714 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1715 int rsa_tmp_export,dh_tmp_export,kl;
1716 unsigned long mask,emask;
1717 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1718#ifndef OPENSSL_NO_ECDH
1719 int have_ecdh_tmp;
1720#endif
1721 X509 *x = NULL;
1722 EVP_PKEY *ecc_pkey = NULL;
1723 int signature_nid = 0;
1724
1725 if (c == NULL) return;
1726
1727 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1728
1729#ifndef OPENSSL_NO_RSA
1730 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1731 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1732 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1733#else
1734 rsa_tmp=rsa_tmp_export=0;
1735#endif
1736#ifndef OPENSSL_NO_DH
1737 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1738 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1739 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1740#else
1741 dh_tmp=dh_tmp_export=0;
1742#endif
1743
1744#ifndef OPENSSL_NO_ECDH
1745 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1746#endif
1747 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1748 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1749 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1750 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1751 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1752 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1753 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1754 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1755 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1756 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1757 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1758/* FIX THIS EAY EAY EAY */
1759 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1760 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1761 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1762 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1763 mask=0;
1764 emask=0;
1765
1766#ifdef CIPHER_DEBUG
1767 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1768 rsa_tmp,rsa_tmp_export,dh_tmp,
1769 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1770#endif
1771
1772 if (rsa_enc || (rsa_tmp && rsa_sign))
1773 mask|=SSL_kRSA;
1774 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1775 emask|=SSL_kRSA;
1776
1777#if 0
1778 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1779 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1780 (rsa_enc || rsa_sign || dsa_sign))
1781 mask|=SSL_kEDH;
1782 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1783 (rsa_enc || rsa_sign || dsa_sign))
1784 emask|=SSL_kEDH;
1785#endif
1786
1787 if (dh_tmp_export)
1788 emask|=SSL_kEDH;
1789
1790 if (dh_tmp)
1791 mask|=SSL_kEDH;
1792
1793 if (dh_rsa) mask|=SSL_kDHr;
1794 if (dh_rsa_export) emask|=SSL_kDHr;
1795
1796 if (dh_dsa) mask|=SSL_kDHd;
1797 if (dh_dsa_export) emask|=SSL_kDHd;
1798
1799 if (rsa_enc || rsa_sign)
1800 {
1801 mask|=SSL_aRSA;
1802 emask|=SSL_aRSA;
1803 }
1804
1805 if (dsa_sign)
1806 {
1807 mask|=SSL_aDSS;
1808 emask|=SSL_aDSS;
1809 }
1810
1811 mask|=SSL_aNULL;
1812 emask|=SSL_aNULL;
1813
1814#ifndef OPENSSL_NO_KRB5
1815 mask|=SSL_kKRB5|SSL_aKRB5;
1816 emask|=SSL_kKRB5|SSL_aKRB5;
1817#endif
1818
1819 /* An ECC certificate may be usable for ECDH and/or
1820 * ECDSA cipher suites depending on the key usage extension.
1821 */
1822 if (have_ecc_cert)
1823 {
1824 /* This call populates extension flags (ex_flags) */
1825 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1826 X509_check_purpose(x, -1, 0);
1827 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1828 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1829 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1830 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1831 ecc_pkey = X509_get_pubkey(x);
1832 ecc_pkey_size = (ecc_pkey != NULL) ?
1833 EVP_PKEY_bits(ecc_pkey) : 0;
1834 EVP_PKEY_free(ecc_pkey);
1835 if ((x->sig_alg) && (x->sig_alg->algorithm))
1836 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1837#ifndef OPENSSL_NO_ECDH
1838 if (ecdh_ok)
1839 {
1840 if ((signature_nid == NID_md5WithRSAEncryption) ||
1841 (signature_nid == NID_md4WithRSAEncryption) ||
1842 (signature_nid == NID_md2WithRSAEncryption))
1843 {
1844 mask|=SSL_kECDH|SSL_aRSA;
1845 if (ecc_pkey_size <= 163)
1846 emask|=SSL_kECDH|SSL_aRSA;
1847 }
1848 if (signature_nid == NID_ecdsa_with_SHA1)
1849 {
1850 mask|=SSL_kECDH|SSL_aECDSA;
1851 if (ecc_pkey_size <= 163)
1852 emask|=SSL_kECDH|SSL_aECDSA;
1853 }
1854 }
1855#endif
1856#ifndef OPENSSL_NO_ECDSA
1857 if (ecdsa_ok)
1858 {
1859 mask|=SSL_aECDSA;
1860 emask|=SSL_aECDSA;
1861 }
1862#endif
1863 }
1864
1865#ifndef OPENSSL_NO_ECDH
1866 if (have_ecdh_tmp)
1867 {
1868 mask|=SSL_kECDHE;
1869 emask|=SSL_kECDHE;
1870 }
1871#endif
1872 c->mask=mask;
1873 c->export_mask=emask;
1874 c->valid=1;
1875 }
1876
1877/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1878#define ku_reject(x, usage) \
1879 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1880
1881int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1882 {
1883 unsigned long alg = cs->algorithms;
1884 EVP_PKEY *pkey = NULL;
1885 int keysize = 0;
1886 int signature_nid = 0;
1887
1888 if (SSL_C_IS_EXPORT(cs))
1889 {
1890 /* ECDH key length in export ciphers must be <= 163 bits */
1891 pkey = X509_get_pubkey(x);
1892 if (pkey == NULL) return 0;
1893 keysize = EVP_PKEY_bits(pkey);
1894 EVP_PKEY_free(pkey);
1895 if (keysize > 163) return 0;
1896 }
1897
1898 /* This call populates the ex_flags field correctly */
1899 X509_check_purpose(x, -1, 0);
1900 if ((x->sig_alg) && (x->sig_alg->algorithm))
1901 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1902 if (alg & SSL_kECDH)
1903 {
1904 /* key usage, if present, must allow key agreement */
1905 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1906 {
1907 return 0;
1908 }
1909 if (alg & SSL_aECDSA)
1910 {
1911 /* signature alg must be ECDSA */
1912 if (signature_nid != NID_ecdsa_with_SHA1)
1913 {
1914 return 0;
1915 }
1916 }
1917 if (alg & SSL_aRSA)
1918 {
1919 /* signature alg must be RSA */
1920 if ((signature_nid != NID_md5WithRSAEncryption) &&
1921 (signature_nid != NID_md4WithRSAEncryption) &&
1922 (signature_nid != NID_md2WithRSAEncryption))
1923 {
1924 return 0;
1925 }
1926 }
1927 }
1928 else if (alg & SSL_aECDSA)
1929 {
1930 /* key usage, if present, must allow signing */
1931 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1932 {
1933 return 0;
1934 }
1935 }
1936
1937 return 1; /* all checks are ok */
1938 }
1939
1940/* THIS NEEDS CLEANING UP */
1941X509 *ssl_get_server_send_cert(SSL *s)
1942 {
|
1952 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1953
1954 if (kalg & SSL_kECDH)
1955 {
1956 /* we don't need to look at SSL_kECDHE
1957 * since no certificate is needed for
1958 * anon ECDH and for authenticated
1959 * ECDHE, the check for the auth
1960 * algorithm will set i correctly
1961 * NOTE: For ECDH-RSA, we need an ECC
1962 * not an RSA cert but for ECDHE-RSA
1963 * we need an RSA cert. Placing the
1964 * checks for SSL_kECDH before RSA
1965 * checks ensures the correct cert is chosen.
1966 */
1967 i=SSL_PKEY_ECC;
1968 }
1969 else if (kalg & SSL_aECDSA)
1970 {
1971 i=SSL_PKEY_ECC;
1972 }
1973 else if (kalg & SSL_kDHr)
1974 i=SSL_PKEY_DH_RSA;
1975 else if (kalg & SSL_kDHd)
1976 i=SSL_PKEY_DH_DSA;
1977 else if (kalg & SSL_aDSS)
1978 i=SSL_PKEY_DSA_SIGN;
1979 else if (kalg & SSL_aRSA)
1980 {
1981 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1982 i=SSL_PKEY_RSA_SIGN;
1983 else
1984 i=SSL_PKEY_RSA_ENC;
1985 }
1986 else if (kalg & SSL_aKRB5)
1987 {
1988 /* VRS something else here? */
1989 return(NULL);
1990 }
1991 else /* if (kalg & SSL_aNULL) */
1992 {
1993 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1994 return(NULL);
1995 }
1996 if (c->pkeys[i].x509 == NULL) return(NULL);
1997
1998 return(c->pkeys[i].x509);
1999 }
2000
2001EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
2002 {
2003 unsigned long alg;
2004 CERT *c;
2005
2006 alg=cipher->algorithms;
2007 c=s->cert;
2008
2009 if ((alg & SSL_aDSS) &&
2010 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2011 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2012 else if (alg & SSL_aRSA)
2013 {
2014 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2015 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2016 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2017 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2018 else
2019 return(NULL);
2020 }
2021 else if ((alg & SSL_aECDSA) &&
2022 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2023 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2024 else /* if (alg & SSL_aNULL) */
2025 {
2026 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2027 return(NULL);
2028 }
2029 }
2030
2031void ssl_update_cache(SSL *s,int mode)
2032 {
2033 int i;
2034
2035 /* If the session_id_length is 0, we are not supposed to cache it,
2036 * and it would be rather hard to do anyway :-) */
2037 if (s->session->session_id_length == 0) return;
2038
2039 i=s->ctx->session_cache_mode;
2040 if ((i & mode) && (!s->hit)
2041 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2042 || SSL_CTX_add_session(s->ctx,s->session))
2043 && (s->ctx->new_session_cb != NULL))
2044 {
2045 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2046 if (!s->ctx->new_session_cb(s,s->session))
2047 SSL_SESSION_free(s->session);
2048 }
2049
2050 /* auto flush every 255 connections */
2051 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2052 ((i & mode) == mode))
2053 {
2054 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2055 ?s->ctx->stats.sess_connect_good
2056 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
2057 {
2058 SSL_CTX_flush_sessions(s->ctx,(unsigned long)time(NULL));
2059 }
2060 }
2061 }
2062
2063SSL_METHOD *SSL_get_ssl_method(SSL *s)
2064 {
2065 return(s->method);
2066 }
2067
2068int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
2069 {
2070 int conn= -1;
2071 int ret=1;
2072
2073 if (s->method != meth)
2074 {
2075 if (s->handshake_func != NULL)
2076 conn=(s->handshake_func == s->method->ssl_connect);
2077
2078 if (s->method->version == meth->version)
2079 s->method=meth;
2080 else
2081 {
2082 s->method->ssl_free(s);
2083 s->method=meth;
2084 ret=s->method->ssl_new(s);
2085 }
2086
2087 if (conn == 1)
2088 s->handshake_func=meth->ssl_connect;
2089 else if (conn == 0)
2090 s->handshake_func=meth->ssl_accept;
2091 }
2092 return(ret);
2093 }
2094
2095int SSL_get_error(const SSL *s,int i)
2096 {
2097 int reason;
2098 unsigned long l;
2099 BIO *bio;
2100
2101 if (i > 0) return(SSL_ERROR_NONE);
2102
2103 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2104 * etc, where we do encode the error */
2105 if ((l=ERR_peek_error()) != 0)
2106 {
2107 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2108 return(SSL_ERROR_SYSCALL);
2109 else
2110 return(SSL_ERROR_SSL);
2111 }
2112
2113 if ((i < 0) && SSL_want_read(s))
2114 {
2115 bio=SSL_get_rbio(s);
2116 if (BIO_should_read(bio))
2117 return(SSL_ERROR_WANT_READ);
2118 else if (BIO_should_write(bio))
2119 /* This one doesn't make too much sense ... We never try
2120 * to write to the rbio, and an application program where
2121 * rbio and wbio are separate couldn't even know what it
2122 * should wait for.
2123 * However if we ever set s->rwstate incorrectly
2124 * (so that we have SSL_want_read(s) instead of
2125 * SSL_want_write(s)) and rbio and wbio *are* the same,
2126 * this test works around that bug; so it might be safer
2127 * to keep it. */
2128 return(SSL_ERROR_WANT_WRITE);
2129 else if (BIO_should_io_special(bio))
2130 {
2131 reason=BIO_get_retry_reason(bio);
2132 if (reason == BIO_RR_CONNECT)
2133 return(SSL_ERROR_WANT_CONNECT);
2134 else if (reason == BIO_RR_ACCEPT)
2135 return(SSL_ERROR_WANT_ACCEPT);
2136 else
2137 return(SSL_ERROR_SYSCALL); /* unknown */
2138 }
2139 }
2140
2141 if ((i < 0) && SSL_want_write(s))
2142 {
2143 bio=SSL_get_wbio(s);
2144 if (BIO_should_write(bio))
2145 return(SSL_ERROR_WANT_WRITE);
2146 else if (BIO_should_read(bio))
2147 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2148 return(SSL_ERROR_WANT_READ);
2149 else if (BIO_should_io_special(bio))
2150 {
2151 reason=BIO_get_retry_reason(bio);
2152 if (reason == BIO_RR_CONNECT)
2153 return(SSL_ERROR_WANT_CONNECT);
2154 else if (reason == BIO_RR_ACCEPT)
2155 return(SSL_ERROR_WANT_ACCEPT);
2156 else
2157 return(SSL_ERROR_SYSCALL);
2158 }
2159 }
2160 if ((i < 0) && SSL_want_x509_lookup(s))
2161 {
2162 return(SSL_ERROR_WANT_X509_LOOKUP);
2163 }
2164
2165 if (i == 0)
2166 {
2167 if (s->version == SSL2_VERSION)
2168 {
2169 /* assume it is the socket being closed */
2170 return(SSL_ERROR_ZERO_RETURN);
2171 }
2172 else
2173 {
2174 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2175 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2176 return(SSL_ERROR_ZERO_RETURN);
2177 }
2178 }
2179 return(SSL_ERROR_SYSCALL);
2180 }
2181
2182int SSL_do_handshake(SSL *s)
2183 {
2184 int ret=1;
2185
2186 if (s->handshake_func == NULL)
2187 {
2188 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2189 return(-1);
2190 }
2191
2192 s->method->ssl_renegotiate_check(s);
2193
2194 if (SSL_in_init(s) || SSL_in_before(s))
2195 {
2196 ret=s->handshake_func(s);
2197 }
2198 return(ret);
2199 }
2200
2201/* For the next 2 functions, SSL_clear() sets shutdown and so
2202 * one of these calls will reset it */
2203void SSL_set_accept_state(SSL *s)
2204 {
2205 s->server=1;
2206 s->shutdown=0;
2207 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2208 s->handshake_func=s->method->ssl_accept;
2209 /* clear the current cipher */
2210 ssl_clear_cipher_ctx(s);
2211 }
2212
2213void SSL_set_connect_state(SSL *s)
2214 {
2215 s->server=0;
2216 s->shutdown=0;
2217 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2218 s->handshake_func=s->method->ssl_connect;
2219 /* clear the current cipher */
2220 ssl_clear_cipher_ctx(s);
2221 }
2222
2223int ssl_undefined_function(SSL *s)
2224 {
2225 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2226 return(0);
2227 }
2228
2229int ssl_undefined_void_function(void)
2230 {
2231 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2232 return(0);
2233 }
2234
2235int ssl_undefined_const_function(const SSL *s)
2236 {
2237 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2238 return(0);
2239 }
2240
2241SSL_METHOD *ssl_bad_method(int ver)
2242 {
2243 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2244 return(NULL);
2245 }
2246
2247const char *SSL_get_version(const SSL *s)
2248 {
2249 if (s->version == TLS1_VERSION)
2250 return("TLSv1");
2251 else if (s->version == SSL3_VERSION)
2252 return("SSLv3");
2253 else if (s->version == SSL2_VERSION)
2254 return("SSLv2");
2255 else
2256 return("unknown");
2257 }
2258
2259SSL *SSL_dup(SSL *s)
2260 {
2261 STACK_OF(X509_NAME) *sk;
2262 X509_NAME *xn;
2263 SSL *ret;
2264 int i;
2265
2266 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2267 return(NULL);
2268
2269 ret->version = s->version;
2270 ret->type = s->type;
2271 ret->method = s->method;
2272
2273 if (s->session != NULL)
2274 {
2275 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2276 SSL_copy_session_id(ret,s);
2277 }
2278 else
2279 {
2280 /* No session has been established yet, so we have to expect
2281 * that s->cert or ret->cert will be changed later --
2282 * they should not both point to the same object,
2283 * and thus we can't use SSL_copy_session_id. */
2284
2285 ret->method->ssl_free(ret);
2286 ret->method = s->method;
2287 ret->method->ssl_new(ret);
2288
2289 if (s->cert != NULL)
2290 {
2291 if (ret->cert != NULL)
2292 {
2293 ssl_cert_free(ret->cert);
2294 }
2295 ret->cert = ssl_cert_dup(s->cert);
2296 if (ret->cert == NULL)
2297 goto err;
2298 }
2299
2300 SSL_set_session_id_context(ret,
2301 s->sid_ctx, s->sid_ctx_length);
2302 }
2303
2304 ret->options=s->options;
2305 ret->mode=s->mode;
2306 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2307 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2308 ret->msg_callback = s->msg_callback;
2309 ret->msg_callback_arg = s->msg_callback_arg;
2310 SSL_set_verify(ret,SSL_get_verify_mode(s),
2311 SSL_get_verify_callback(s));
2312 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2313 ret->generate_session_id = s->generate_session_id;
2314
2315 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2316
2317 ret->debug=s->debug;
2318
2319 /* copy app data, a little dangerous perhaps */
2320 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2321 goto err;
2322
2323 /* setup rbio, and wbio */
2324 if (s->rbio != NULL)
2325 {
2326 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2327 goto err;
2328 }
2329 if (s->wbio != NULL)
2330 {
2331 if (s->wbio != s->rbio)
2332 {
2333 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2334 goto err;
2335 }
2336 else
2337 ret->wbio=ret->rbio;
2338 }
2339 ret->rwstate = s->rwstate;
2340 ret->in_handshake = s->in_handshake;
2341 ret->handshake_func = s->handshake_func;
2342 ret->server = s->server;
2343 ret->new_session = s->new_session;
2344 ret->quiet_shutdown = s->quiet_shutdown;
2345 ret->shutdown=s->shutdown;
2346 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2347 ret->rstate=s->rstate;
2348 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2349 ret->hit=s->hit;
2350
2351 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2352
2353 /* dup the cipher_list and cipher_list_by_id stacks */
2354 if (s->cipher_list != NULL)
2355 {
2356 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2357 goto err;
2358 }
2359 if (s->cipher_list_by_id != NULL)
2360 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2361 == NULL)
2362 goto err;
2363
2364 /* Dup the client_CA list */
2365 if (s->client_CA != NULL)
2366 {
2367 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2368 ret->client_CA=sk;
2369 for (i=0; i<sk_X509_NAME_num(sk); i++)
2370 {
2371 xn=sk_X509_NAME_value(sk,i);
2372 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2373 {
2374 X509_NAME_free(xn);
2375 goto err;
2376 }
2377 }
2378 }
2379
2380 if (0)
2381 {
2382err:
2383 if (ret != NULL) SSL_free(ret);
2384 ret=NULL;
2385 }
2386 return(ret);
2387 }
2388
2389void ssl_clear_cipher_ctx(SSL *s)
2390 {
2391 if (s->enc_read_ctx != NULL)
2392 {
2393 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2394 OPENSSL_free(s->enc_read_ctx);
2395 s->enc_read_ctx=NULL;
2396 }
2397 if (s->enc_write_ctx != NULL)
2398 {
2399 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2400 OPENSSL_free(s->enc_write_ctx);
2401 s->enc_write_ctx=NULL;
2402 }
2403#ifndef OPENSSL_NO_COMP
2404 if (s->expand != NULL)
2405 {
2406 COMP_CTX_free(s->expand);
2407 s->expand=NULL;
2408 }
2409 if (s->compress != NULL)
2410 {
2411 COMP_CTX_free(s->compress);
2412 s->compress=NULL;
2413 }
2414#endif
2415 }
2416
2417/* Fix this function so that it takes an optional type parameter */
2418X509 *SSL_get_certificate(const SSL *s)
2419 {
2420 if (s->cert != NULL)
2421 return(s->cert->key->x509);
2422 else
2423 return(NULL);
2424 }
2425
2426/* Fix this function so that it takes an optional type parameter */
2427EVP_PKEY *SSL_get_privatekey(SSL *s)
2428 {
2429 if (s->cert != NULL)
2430 return(s->cert->key->privatekey);
2431 else
2432 return(NULL);
2433 }
2434
2435SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2436 {
2437 if ((s->session != NULL) && (s->session->cipher != NULL))
2438 return(s->session->cipher);
2439 return(NULL);
2440 }
2441#ifdef OPENSSL_NO_COMP
2442const void *SSL_get_current_compression(SSL *s)
2443 {
2444 return NULL;
2445 }
2446const void *SSL_get_current_expansion(SSL *s)
2447 {
2448 return NULL;
2449 }
2450#else
2451
2452const COMP_METHOD *SSL_get_current_compression(SSL *s)
2453 {
2454 if (s->compress != NULL)
2455 return(s->compress->meth);
2456 return(NULL);
2457 }
2458
2459const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2460 {
2461 if (s->expand != NULL)
2462 return(s->expand->meth);
2463 return(NULL);
2464 }
2465#endif
2466
2467int ssl_init_wbio_buffer(SSL *s,int push)
2468 {
2469 BIO *bbio;
2470
2471 if (s->bbio == NULL)
2472 {
2473 bbio=BIO_new(BIO_f_buffer());
2474 if (bbio == NULL) return(0);
2475 s->bbio=bbio;
2476 }
2477 else
2478 {
2479 bbio=s->bbio;
2480 if (s->bbio == s->wbio)
2481 s->wbio=BIO_pop(s->wbio);
2482 }
2483 (void)BIO_reset(bbio);
2484/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2485 if (!BIO_set_read_buffer_size(bbio,1))
2486 {
2487 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2488 return(0);
2489 }
2490 if (push)
2491 {
2492 if (s->wbio != bbio)
2493 s->wbio=BIO_push(bbio,s->wbio);
2494 }
2495 else
2496 {
2497 if (s->wbio == bbio)
2498 s->wbio=BIO_pop(bbio);
2499 }
2500 return(1);
2501 }
2502
2503void ssl_free_wbio_buffer(SSL *s)
2504 {
2505 if (s->bbio == NULL) return;
2506
2507 if (s->bbio == s->wbio)
2508 {
2509 /* remove buffering */
2510 s->wbio=BIO_pop(s->wbio);
2511#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2512 assert(s->wbio != NULL);
2513#endif
2514 }
2515 BIO_free(s->bbio);
2516 s->bbio=NULL;
2517 }
2518
2519void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2520 {
2521 ctx->quiet_shutdown=mode;
2522 }
2523
2524int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2525 {
2526 return(ctx->quiet_shutdown);
2527 }
2528
2529void SSL_set_quiet_shutdown(SSL *s,int mode)
2530 {
2531 s->quiet_shutdown=mode;
2532 }
2533
2534int SSL_get_quiet_shutdown(const SSL *s)
2535 {
2536 return(s->quiet_shutdown);
2537 }
2538
2539void SSL_set_shutdown(SSL *s,int mode)
2540 {
2541 s->shutdown=mode;
2542 }
2543
2544int SSL_get_shutdown(const SSL *s)
2545 {
2546 return(s->shutdown);
2547 }
2548
2549int SSL_version(const SSL *s)
2550 {
2551 return(s->version);
2552 }
2553
2554SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2555 {
2556 return(ssl->ctx);
2557 }
2558
2559SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2560 {
2561 if (ssl->ctx == ctx)
2562 return ssl->ctx;
2563#ifndef OPENSSL_NO_TLSEXT
2564 if (ctx == NULL)
2565 ctx = ssl->initial_ctx;
2566#endif
2567 if (ssl->cert != NULL)
2568 ssl_cert_free(ssl->cert);
2569 ssl->cert = ssl_cert_dup(ctx->cert);
2570 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2571 if (ssl->ctx != NULL)
2572 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2573 ssl->ctx = ctx;
2574 return(ssl->ctx);
2575 }
2576
2577#ifndef OPENSSL_NO_STDIO
2578int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2579 {
2580 return(X509_STORE_set_default_paths(ctx->cert_store));
2581 }
2582
2583int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2584 const char *CApath)
2585 {
2586 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2587 }
2588#endif
2589
2590void SSL_set_info_callback(SSL *ssl,
2591 void (*cb)(const SSL *ssl,int type,int val))
2592 {
2593 ssl->info_callback=cb;
2594 }
2595
2596/* One compiler (Diab DCC) doesn't like argument names in returned
2597 function pointer. */
2598void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2599 {
2600 return ssl->info_callback;
2601 }
2602
2603int SSL_state(const SSL *ssl)
2604 {
2605 return(ssl->state);
2606 }
2607
2608void SSL_set_verify_result(SSL *ssl,long arg)
2609 {
2610 ssl->verify_result=arg;
2611 }
2612
2613long SSL_get_verify_result(const SSL *ssl)
2614 {
2615 return(ssl->verify_result);
2616 }
2617
2618int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2619 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2620 {
2621 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2622 new_func, dup_func, free_func);
2623 }
2624
2625int SSL_set_ex_data(SSL *s,int idx,void *arg)
2626 {
2627 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2628 }
2629
2630void *SSL_get_ex_data(const SSL *s,int idx)
2631 {
2632 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2633 }
2634
2635int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2636 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2637 {
2638 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2639 new_func, dup_func, free_func);
2640 }
2641
2642int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2643 {
2644 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2645 }
2646
2647void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2648 {
2649 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2650 }
2651
2652int ssl_ok(SSL *s)
2653 {
2654 return(1);
2655 }
2656
2657X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2658 {
2659 return(ctx->cert_store);
2660 }
2661
2662void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2663 {
2664 if (ctx->cert_store != NULL)
2665 X509_STORE_free(ctx->cert_store);
2666 ctx->cert_store=store;
2667 }
2668
2669int SSL_want(const SSL *s)
2670 {
2671 return(s->rwstate);
2672 }
2673
2674/*!
2675 * \brief Set the callback for generating temporary RSA keys.
2676 * \param ctx the SSL context.
2677 * \param cb the callback
2678 */
2679
2680#ifndef OPENSSL_NO_RSA
2681void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2682 int is_export,
2683 int keylength))
2684 {
2685 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2686 }
2687
2688void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2689 int is_export,
2690 int keylength))
2691 {
2692 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2693 }
2694#endif
2695
2696#ifdef DOXYGEN
2697/*!
2698 * \brief The RSA temporary key callback function.
2699 * \param ssl the SSL session.
2700 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2701 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2702 * of the required key in bits.
2703 * \return the temporary RSA key.
2704 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2705 */
2706
2707RSA *cb(SSL *ssl,int is_export,int keylength)
2708 {}
2709#endif
2710
2711/*!
2712 * \brief Set the callback for generating temporary DH keys.
2713 * \param ctx the SSL context.
2714 * \param dh the callback
2715 */
2716
2717#ifndef OPENSSL_NO_DH
2718void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2719 int keylength))
2720 {
2721 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2722 }
2723
2724void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2725 int keylength))
2726 {
2727 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2728 }
2729#endif
2730
2731#ifndef OPENSSL_NO_ECDH
2732void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2733 int keylength))
2734 {
2735 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2736 }
2737
2738void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2739 int keylength))
2740 {
2741 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2742 }
2743#endif
2744
2745
2746void 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))
2747 {
2748 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2749 }
2750void 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))
2751 {
2752 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2753 }
2754
2755
2756
2757#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2758#include "../crypto/bio/bss_file.c"
2759#endif
2760
2761IMPLEMENT_STACK_OF(SSL_CIPHER)
2762IMPLEMENT_STACK_OF(SSL_COMP)
| 1950 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1951
1952 if (kalg & SSL_kECDH)
1953 {
1954 /* we don't need to look at SSL_kECDHE
1955 * since no certificate is needed for
1956 * anon ECDH and for authenticated
1957 * ECDHE, the check for the auth
1958 * algorithm will set i correctly
1959 * NOTE: For ECDH-RSA, we need an ECC
1960 * not an RSA cert but for ECDHE-RSA
1961 * we need an RSA cert. Placing the
1962 * checks for SSL_kECDH before RSA
1963 * checks ensures the correct cert is chosen.
1964 */
1965 i=SSL_PKEY_ECC;
1966 }
1967 else if (kalg & SSL_aECDSA)
1968 {
1969 i=SSL_PKEY_ECC;
1970 }
1971 else if (kalg & SSL_kDHr)
1972 i=SSL_PKEY_DH_RSA;
1973 else if (kalg & SSL_kDHd)
1974 i=SSL_PKEY_DH_DSA;
1975 else if (kalg & SSL_aDSS)
1976 i=SSL_PKEY_DSA_SIGN;
1977 else if (kalg & SSL_aRSA)
1978 {
1979 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1980 i=SSL_PKEY_RSA_SIGN;
1981 else
1982 i=SSL_PKEY_RSA_ENC;
1983 }
1984 else if (kalg & SSL_aKRB5)
1985 {
1986 /* VRS something else here? */
1987 return(NULL);
1988 }
1989 else /* if (kalg & SSL_aNULL) */
1990 {
1991 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1992 return(NULL);
1993 }
1994 if (c->pkeys[i].x509 == NULL) return(NULL);
1995
1996 return(c->pkeys[i].x509);
1997 }
1998
1999EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
2000 {
2001 unsigned long alg;
2002 CERT *c;
2003
2004 alg=cipher->algorithms;
2005 c=s->cert;
2006
2007 if ((alg & SSL_aDSS) &&
2008 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2009 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2010 else if (alg & SSL_aRSA)
2011 {
2012 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2013 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2014 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2015 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2016 else
2017 return(NULL);
2018 }
2019 else if ((alg & SSL_aECDSA) &&
2020 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2021 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2022 else /* if (alg & SSL_aNULL) */
2023 {
2024 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2025 return(NULL);
2026 }
2027 }
2028
2029void ssl_update_cache(SSL *s,int mode)
2030 {
2031 int i;
2032
2033 /* If the session_id_length is 0, we are not supposed to cache it,
2034 * and it would be rather hard to do anyway :-) */
2035 if (s->session->session_id_length == 0) return;
2036
2037 i=s->ctx->session_cache_mode;
2038 if ((i & mode) && (!s->hit)
2039 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2040 || SSL_CTX_add_session(s->ctx,s->session))
2041 && (s->ctx->new_session_cb != NULL))
2042 {
2043 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2044 if (!s->ctx->new_session_cb(s,s->session))
2045 SSL_SESSION_free(s->session);
2046 }
2047
2048 /* auto flush every 255 connections */
2049 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2050 ((i & mode) == mode))
2051 {
2052 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2053 ?s->ctx->stats.sess_connect_good
2054 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
2055 {
2056 SSL_CTX_flush_sessions(s->ctx,(unsigned long)time(NULL));
2057 }
2058 }
2059 }
2060
2061SSL_METHOD *SSL_get_ssl_method(SSL *s)
2062 {
2063 return(s->method);
2064 }
2065
2066int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
2067 {
2068 int conn= -1;
2069 int ret=1;
2070
2071 if (s->method != meth)
2072 {
2073 if (s->handshake_func != NULL)
2074 conn=(s->handshake_func == s->method->ssl_connect);
2075
2076 if (s->method->version == meth->version)
2077 s->method=meth;
2078 else
2079 {
2080 s->method->ssl_free(s);
2081 s->method=meth;
2082 ret=s->method->ssl_new(s);
2083 }
2084
2085 if (conn == 1)
2086 s->handshake_func=meth->ssl_connect;
2087 else if (conn == 0)
2088 s->handshake_func=meth->ssl_accept;
2089 }
2090 return(ret);
2091 }
2092
2093int SSL_get_error(const SSL *s,int i)
2094 {
2095 int reason;
2096 unsigned long l;
2097 BIO *bio;
2098
2099 if (i > 0) return(SSL_ERROR_NONE);
2100
2101 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2102 * etc, where we do encode the error */
2103 if ((l=ERR_peek_error()) != 0)
2104 {
2105 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2106 return(SSL_ERROR_SYSCALL);
2107 else
2108 return(SSL_ERROR_SSL);
2109 }
2110
2111 if ((i < 0) && SSL_want_read(s))
2112 {
2113 bio=SSL_get_rbio(s);
2114 if (BIO_should_read(bio))
2115 return(SSL_ERROR_WANT_READ);
2116 else if (BIO_should_write(bio))
2117 /* This one doesn't make too much sense ... We never try
2118 * to write to the rbio, and an application program where
2119 * rbio and wbio are separate couldn't even know what it
2120 * should wait for.
2121 * However if we ever set s->rwstate incorrectly
2122 * (so that we have SSL_want_read(s) instead of
2123 * SSL_want_write(s)) and rbio and wbio *are* the same,
2124 * this test works around that bug; so it might be safer
2125 * to keep it. */
2126 return(SSL_ERROR_WANT_WRITE);
2127 else if (BIO_should_io_special(bio))
2128 {
2129 reason=BIO_get_retry_reason(bio);
2130 if (reason == BIO_RR_CONNECT)
2131 return(SSL_ERROR_WANT_CONNECT);
2132 else if (reason == BIO_RR_ACCEPT)
2133 return(SSL_ERROR_WANT_ACCEPT);
2134 else
2135 return(SSL_ERROR_SYSCALL); /* unknown */
2136 }
2137 }
2138
2139 if ((i < 0) && SSL_want_write(s))
2140 {
2141 bio=SSL_get_wbio(s);
2142 if (BIO_should_write(bio))
2143 return(SSL_ERROR_WANT_WRITE);
2144 else if (BIO_should_read(bio))
2145 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2146 return(SSL_ERROR_WANT_READ);
2147 else if (BIO_should_io_special(bio))
2148 {
2149 reason=BIO_get_retry_reason(bio);
2150 if (reason == BIO_RR_CONNECT)
2151 return(SSL_ERROR_WANT_CONNECT);
2152 else if (reason == BIO_RR_ACCEPT)
2153 return(SSL_ERROR_WANT_ACCEPT);
2154 else
2155 return(SSL_ERROR_SYSCALL);
2156 }
2157 }
2158 if ((i < 0) && SSL_want_x509_lookup(s))
2159 {
2160 return(SSL_ERROR_WANT_X509_LOOKUP);
2161 }
2162
2163 if (i == 0)
2164 {
2165 if (s->version == SSL2_VERSION)
2166 {
2167 /* assume it is the socket being closed */
2168 return(SSL_ERROR_ZERO_RETURN);
2169 }
2170 else
2171 {
2172 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2173 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2174 return(SSL_ERROR_ZERO_RETURN);
2175 }
2176 }
2177 return(SSL_ERROR_SYSCALL);
2178 }
2179
2180int SSL_do_handshake(SSL *s)
2181 {
2182 int ret=1;
2183
2184 if (s->handshake_func == NULL)
2185 {
2186 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2187 return(-1);
2188 }
2189
2190 s->method->ssl_renegotiate_check(s);
2191
2192 if (SSL_in_init(s) || SSL_in_before(s))
2193 {
2194 ret=s->handshake_func(s);
2195 }
2196 return(ret);
2197 }
2198
2199/* For the next 2 functions, SSL_clear() sets shutdown and so
2200 * one of these calls will reset it */
2201void SSL_set_accept_state(SSL *s)
2202 {
2203 s->server=1;
2204 s->shutdown=0;
2205 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2206 s->handshake_func=s->method->ssl_accept;
2207 /* clear the current cipher */
2208 ssl_clear_cipher_ctx(s);
2209 }
2210
2211void SSL_set_connect_state(SSL *s)
2212 {
2213 s->server=0;
2214 s->shutdown=0;
2215 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2216 s->handshake_func=s->method->ssl_connect;
2217 /* clear the current cipher */
2218 ssl_clear_cipher_ctx(s);
2219 }
2220
2221int ssl_undefined_function(SSL *s)
2222 {
2223 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2224 return(0);
2225 }
2226
2227int ssl_undefined_void_function(void)
2228 {
2229 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2230 return(0);
2231 }
2232
2233int ssl_undefined_const_function(const SSL *s)
2234 {
2235 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2236 return(0);
2237 }
2238
2239SSL_METHOD *ssl_bad_method(int ver)
2240 {
2241 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2242 return(NULL);
2243 }
2244
2245const char *SSL_get_version(const SSL *s)
2246 {
2247 if (s->version == TLS1_VERSION)
2248 return("TLSv1");
2249 else if (s->version == SSL3_VERSION)
2250 return("SSLv3");
2251 else if (s->version == SSL2_VERSION)
2252 return("SSLv2");
2253 else
2254 return("unknown");
2255 }
2256
2257SSL *SSL_dup(SSL *s)
2258 {
2259 STACK_OF(X509_NAME) *sk;
2260 X509_NAME *xn;
2261 SSL *ret;
2262 int i;
2263
2264 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2265 return(NULL);
2266
2267 ret->version = s->version;
2268 ret->type = s->type;
2269 ret->method = s->method;
2270
2271 if (s->session != NULL)
2272 {
2273 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2274 SSL_copy_session_id(ret,s);
2275 }
2276 else
2277 {
2278 /* No session has been established yet, so we have to expect
2279 * that s->cert or ret->cert will be changed later --
2280 * they should not both point to the same object,
2281 * and thus we can't use SSL_copy_session_id. */
2282
2283 ret->method->ssl_free(ret);
2284 ret->method = s->method;
2285 ret->method->ssl_new(ret);
2286
2287 if (s->cert != NULL)
2288 {
2289 if (ret->cert != NULL)
2290 {
2291 ssl_cert_free(ret->cert);
2292 }
2293 ret->cert = ssl_cert_dup(s->cert);
2294 if (ret->cert == NULL)
2295 goto err;
2296 }
2297
2298 SSL_set_session_id_context(ret,
2299 s->sid_ctx, s->sid_ctx_length);
2300 }
2301
2302 ret->options=s->options;
2303 ret->mode=s->mode;
2304 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2305 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2306 ret->msg_callback = s->msg_callback;
2307 ret->msg_callback_arg = s->msg_callback_arg;
2308 SSL_set_verify(ret,SSL_get_verify_mode(s),
2309 SSL_get_verify_callback(s));
2310 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2311 ret->generate_session_id = s->generate_session_id;
2312
2313 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2314
2315 ret->debug=s->debug;
2316
2317 /* copy app data, a little dangerous perhaps */
2318 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2319 goto err;
2320
2321 /* setup rbio, and wbio */
2322 if (s->rbio != NULL)
2323 {
2324 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2325 goto err;
2326 }
2327 if (s->wbio != NULL)
2328 {
2329 if (s->wbio != s->rbio)
2330 {
2331 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2332 goto err;
2333 }
2334 else
2335 ret->wbio=ret->rbio;
2336 }
2337 ret->rwstate = s->rwstate;
2338 ret->in_handshake = s->in_handshake;
2339 ret->handshake_func = s->handshake_func;
2340 ret->server = s->server;
2341 ret->new_session = s->new_session;
2342 ret->quiet_shutdown = s->quiet_shutdown;
2343 ret->shutdown=s->shutdown;
2344 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2345 ret->rstate=s->rstate;
2346 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2347 ret->hit=s->hit;
2348
2349 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2350
2351 /* dup the cipher_list and cipher_list_by_id stacks */
2352 if (s->cipher_list != NULL)
2353 {
2354 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2355 goto err;
2356 }
2357 if (s->cipher_list_by_id != NULL)
2358 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2359 == NULL)
2360 goto err;
2361
2362 /* Dup the client_CA list */
2363 if (s->client_CA != NULL)
2364 {
2365 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2366 ret->client_CA=sk;
2367 for (i=0; i<sk_X509_NAME_num(sk); i++)
2368 {
2369 xn=sk_X509_NAME_value(sk,i);
2370 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2371 {
2372 X509_NAME_free(xn);
2373 goto err;
2374 }
2375 }
2376 }
2377
2378 if (0)
2379 {
2380err:
2381 if (ret != NULL) SSL_free(ret);
2382 ret=NULL;
2383 }
2384 return(ret);
2385 }
2386
2387void ssl_clear_cipher_ctx(SSL *s)
2388 {
2389 if (s->enc_read_ctx != NULL)
2390 {
2391 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2392 OPENSSL_free(s->enc_read_ctx);
2393 s->enc_read_ctx=NULL;
2394 }
2395 if (s->enc_write_ctx != NULL)
2396 {
2397 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2398 OPENSSL_free(s->enc_write_ctx);
2399 s->enc_write_ctx=NULL;
2400 }
2401#ifndef OPENSSL_NO_COMP
2402 if (s->expand != NULL)
2403 {
2404 COMP_CTX_free(s->expand);
2405 s->expand=NULL;
2406 }
2407 if (s->compress != NULL)
2408 {
2409 COMP_CTX_free(s->compress);
2410 s->compress=NULL;
2411 }
2412#endif
2413 }
2414
2415/* Fix this function so that it takes an optional type parameter */
2416X509 *SSL_get_certificate(const SSL *s)
2417 {
2418 if (s->cert != NULL)
2419 return(s->cert->key->x509);
2420 else
2421 return(NULL);
2422 }
2423
2424/* Fix this function so that it takes an optional type parameter */
2425EVP_PKEY *SSL_get_privatekey(SSL *s)
2426 {
2427 if (s->cert != NULL)
2428 return(s->cert->key->privatekey);
2429 else
2430 return(NULL);
2431 }
2432
2433SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2434 {
2435 if ((s->session != NULL) && (s->session->cipher != NULL))
2436 return(s->session->cipher);
2437 return(NULL);
2438 }
2439#ifdef OPENSSL_NO_COMP
2440const void *SSL_get_current_compression(SSL *s)
2441 {
2442 return NULL;
2443 }
2444const void *SSL_get_current_expansion(SSL *s)
2445 {
2446 return NULL;
2447 }
2448#else
2449
2450const COMP_METHOD *SSL_get_current_compression(SSL *s)
2451 {
2452 if (s->compress != NULL)
2453 return(s->compress->meth);
2454 return(NULL);
2455 }
2456
2457const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2458 {
2459 if (s->expand != NULL)
2460 return(s->expand->meth);
2461 return(NULL);
2462 }
2463#endif
2464
2465int ssl_init_wbio_buffer(SSL *s,int push)
2466 {
2467 BIO *bbio;
2468
2469 if (s->bbio == NULL)
2470 {
2471 bbio=BIO_new(BIO_f_buffer());
2472 if (bbio == NULL) return(0);
2473 s->bbio=bbio;
2474 }
2475 else
2476 {
2477 bbio=s->bbio;
2478 if (s->bbio == s->wbio)
2479 s->wbio=BIO_pop(s->wbio);
2480 }
2481 (void)BIO_reset(bbio);
2482/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2483 if (!BIO_set_read_buffer_size(bbio,1))
2484 {
2485 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2486 return(0);
2487 }
2488 if (push)
2489 {
2490 if (s->wbio != bbio)
2491 s->wbio=BIO_push(bbio,s->wbio);
2492 }
2493 else
2494 {
2495 if (s->wbio == bbio)
2496 s->wbio=BIO_pop(bbio);
2497 }
2498 return(1);
2499 }
2500
2501void ssl_free_wbio_buffer(SSL *s)
2502 {
2503 if (s->bbio == NULL) return;
2504
2505 if (s->bbio == s->wbio)
2506 {
2507 /* remove buffering */
2508 s->wbio=BIO_pop(s->wbio);
2509#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2510 assert(s->wbio != NULL);
2511#endif
2512 }
2513 BIO_free(s->bbio);
2514 s->bbio=NULL;
2515 }
2516
2517void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2518 {
2519 ctx->quiet_shutdown=mode;
2520 }
2521
2522int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2523 {
2524 return(ctx->quiet_shutdown);
2525 }
2526
2527void SSL_set_quiet_shutdown(SSL *s,int mode)
2528 {
2529 s->quiet_shutdown=mode;
2530 }
2531
2532int SSL_get_quiet_shutdown(const SSL *s)
2533 {
2534 return(s->quiet_shutdown);
2535 }
2536
2537void SSL_set_shutdown(SSL *s,int mode)
2538 {
2539 s->shutdown=mode;
2540 }
2541
2542int SSL_get_shutdown(const SSL *s)
2543 {
2544 return(s->shutdown);
2545 }
2546
2547int SSL_version(const SSL *s)
2548 {
2549 return(s->version);
2550 }
2551
2552SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2553 {
2554 return(ssl->ctx);
2555 }
2556
2557SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2558 {
2559 if (ssl->ctx == ctx)
2560 return ssl->ctx;
2561#ifndef OPENSSL_NO_TLSEXT
2562 if (ctx == NULL)
2563 ctx = ssl->initial_ctx;
2564#endif
2565 if (ssl->cert != NULL)
2566 ssl_cert_free(ssl->cert);
2567 ssl->cert = ssl_cert_dup(ctx->cert);
2568 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2569 if (ssl->ctx != NULL)
2570 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2571 ssl->ctx = ctx;
2572 return(ssl->ctx);
2573 }
2574
2575#ifndef OPENSSL_NO_STDIO
2576int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2577 {
2578 return(X509_STORE_set_default_paths(ctx->cert_store));
2579 }
2580
2581int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2582 const char *CApath)
2583 {
2584 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2585 }
2586#endif
2587
2588void SSL_set_info_callback(SSL *ssl,
2589 void (*cb)(const SSL *ssl,int type,int val))
2590 {
2591 ssl->info_callback=cb;
2592 }
2593
2594/* One compiler (Diab DCC) doesn't like argument names in returned
2595 function pointer. */
2596void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2597 {
2598 return ssl->info_callback;
2599 }
2600
2601int SSL_state(const SSL *ssl)
2602 {
2603 return(ssl->state);
2604 }
2605
2606void SSL_set_verify_result(SSL *ssl,long arg)
2607 {
2608 ssl->verify_result=arg;
2609 }
2610
2611long SSL_get_verify_result(const SSL *ssl)
2612 {
2613 return(ssl->verify_result);
2614 }
2615
2616int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2617 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2618 {
2619 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2620 new_func, dup_func, free_func);
2621 }
2622
2623int SSL_set_ex_data(SSL *s,int idx,void *arg)
2624 {
2625 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2626 }
2627
2628void *SSL_get_ex_data(const SSL *s,int idx)
2629 {
2630 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2631 }
2632
2633int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2634 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2635 {
2636 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2637 new_func, dup_func, free_func);
2638 }
2639
2640int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2641 {
2642 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2643 }
2644
2645void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2646 {
2647 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2648 }
2649
2650int ssl_ok(SSL *s)
2651 {
2652 return(1);
2653 }
2654
2655X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2656 {
2657 return(ctx->cert_store);
2658 }
2659
2660void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2661 {
2662 if (ctx->cert_store != NULL)
2663 X509_STORE_free(ctx->cert_store);
2664 ctx->cert_store=store;
2665 }
2666
2667int SSL_want(const SSL *s)
2668 {
2669 return(s->rwstate);
2670 }
2671
2672/*!
2673 * \brief Set the callback for generating temporary RSA keys.
2674 * \param ctx the SSL context.
2675 * \param cb the callback
2676 */
2677
2678#ifndef OPENSSL_NO_RSA
2679void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2680 int is_export,
2681 int keylength))
2682 {
2683 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2684 }
2685
2686void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2687 int is_export,
2688 int keylength))
2689 {
2690 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2691 }
2692#endif
2693
2694#ifdef DOXYGEN
2695/*!
2696 * \brief The RSA temporary key callback function.
2697 * \param ssl the SSL session.
2698 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2699 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2700 * of the required key in bits.
2701 * \return the temporary RSA key.
2702 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2703 */
2704
2705RSA *cb(SSL *ssl,int is_export,int keylength)
2706 {}
2707#endif
2708
2709/*!
2710 * \brief Set the callback for generating temporary DH keys.
2711 * \param ctx the SSL context.
2712 * \param dh the callback
2713 */
2714
2715#ifndef OPENSSL_NO_DH
2716void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2717 int keylength))
2718 {
2719 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2720 }
2721
2722void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2723 int keylength))
2724 {
2725 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2726 }
2727#endif
2728
2729#ifndef OPENSSL_NO_ECDH
2730void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2731 int keylength))
2732 {
2733 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2734 }
2735
2736void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2737 int keylength))
2738 {
2739 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2740 }
2741#endif
2742
2743
2744void 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))
2745 {
2746 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2747 }
2748void 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))
2749 {
2750 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2751 }
2752
2753
2754
2755#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2756#include "../crypto/bio/bss_file.c"
2757#endif
2758
2759IMPLEMENT_STACK_OF(SSL_CIPHER)
2760IMPLEMENT_STACK_OF(SSL_COMP)
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