1 /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112 #include <stdio.h>
113 #include <stdlib.h>
114 #define USE_SOCKETS
115 #define NON_MAIN
116 #include "apps.h"
117 #undef NON_MAIN
118 #undef USE_SOCKETS
119 #include <openssl/err.h>
120 #include <openssl/rand.h>
121 #include <openssl/x509.h>
122 #include <openssl/ssl.h>
123 #include "s_apps.h"
124
125 #define COOKIE_SECRET_LENGTH 16
126
127 int verify_depth=0;
128 int verify_error=X509_V_OK;
129 int verify_return_error=0;
130 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
131 int cookie_initialized=0;
132
verify_callback(int ok,X509_STORE_CTX * ctx)133 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
134 {
135 X509 *err_cert;
136 int err,depth;
137
138 err_cert=X509_STORE_CTX_get_current_cert(ctx);
139 err= X509_STORE_CTX_get_error(ctx);
140 depth= X509_STORE_CTX_get_error_depth(ctx);
141
142 BIO_printf(bio_err,"depth=%d ",depth);
143 if (err_cert)
144 {
145 X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
146 0, XN_FLAG_ONELINE);
147 BIO_puts(bio_err, "\n");
148 }
149 else
150 BIO_puts(bio_err, "<no cert>\n");
151 if (!ok)
152 {
153 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
154 X509_verify_cert_error_string(err));
155 if (verify_depth >= depth)
156 {
157 if (!verify_return_error)
158 ok=1;
159 verify_error=X509_V_OK;
160 }
161 else
162 {
163 ok=0;
164 verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
165 }
166 }
167 switch (err)
168 {
169 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
170 BIO_puts(bio_err,"issuer= ");
171 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
172 0, XN_FLAG_ONELINE);
173 BIO_puts(bio_err, "\n");
174 break;
175 case X509_V_ERR_CERT_NOT_YET_VALID:
176 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
177 BIO_printf(bio_err,"notBefore=");
178 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
179 BIO_printf(bio_err,"\n");
180 break;
181 case X509_V_ERR_CERT_HAS_EXPIRED:
182 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
183 BIO_printf(bio_err,"notAfter=");
184 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
185 BIO_printf(bio_err,"\n");
186 break;
187 case X509_V_ERR_NO_EXPLICIT_POLICY:
188 policies_print(bio_err, ctx);
189 break;
190 }
191 if (err == X509_V_OK && ok == 2)
192 policies_print(bio_err, ctx);
193
194 BIO_printf(bio_err,"verify return:%d\n",ok);
195 return(ok);
196 }
197
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)198 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
199 {
200 if (cert_file != NULL)
201 {
202 /*
203 SSL *ssl;
204 X509 *x509;
205 */
206
207 if (SSL_CTX_use_certificate_file(ctx,cert_file,
208 SSL_FILETYPE_PEM) <= 0)
209 {
210 BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
211 ERR_print_errors(bio_err);
212 return(0);
213 }
214 if (key_file == NULL) key_file=cert_file;
215 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
216 SSL_FILETYPE_PEM) <= 0)
217 {
218 BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
219 ERR_print_errors(bio_err);
220 return(0);
221 }
222
223 /*
224 In theory this is no longer needed
225 ssl=SSL_new(ctx);
226 x509=SSL_get_certificate(ssl);
227
228 if (x509 != NULL) {
229 EVP_PKEY *pktmp;
230 pktmp = X509_get_pubkey(x509);
231 EVP_PKEY_copy_parameters(pktmp,
232 SSL_get_privatekey(ssl));
233 EVP_PKEY_free(pktmp);
234 }
235 SSL_free(ssl);
236 */
237
238 /* If we are using DSA, we can copy the parameters from
239 * the private key */
240
241
242 /* Now we know that a key and cert have been set against
243 * the SSL context */
244 if (!SSL_CTX_check_private_key(ctx))
245 {
246 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
247 return(0);
248 }
249 }
250 return(1);
251 }
252
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key)253 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
254 {
255 if (cert == NULL)
256 return 1;
257 if (SSL_CTX_use_certificate(ctx,cert) <= 0)
258 {
259 BIO_printf(bio_err,"error setting certificate\n");
260 ERR_print_errors(bio_err);
261 return 0;
262 }
263 if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
264 {
265 BIO_printf(bio_err,"error setting private key\n");
266 ERR_print_errors(bio_err);
267 return 0;
268 }
269
270
271 /* Now we know that a key and cert have been set against
272 * the SSL context */
273 if (!SSL_CTX_check_private_key(ctx))
274 {
275 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
276 return 0;
277 }
278 return 1;
279 }
280
bio_dump_callback(BIO * bio,int cmd,const char * argp,int argi,long argl,long ret)281 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
282 int argi, long argl, long ret)
283 {
284 BIO *out;
285
286 out=(BIO *)BIO_get_callback_arg(bio);
287 if (out == NULL) return(ret);
288
289 if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
290 {
291 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
292 (void *)bio,argp,(unsigned long)argi,ret,ret);
293 BIO_dump(out,argp,(int)ret);
294 return(ret);
295 }
296 else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
297 {
298 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
299 (void *)bio,argp,(unsigned long)argi,ret,ret);
300 BIO_dump(out,argp,(int)ret);
301 }
302 return(ret);
303 }
304
apps_ssl_info_callback(const SSL * s,int where,int ret)305 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
306 {
307 const char *str;
308 int w;
309
310 w=where& ~SSL_ST_MASK;
311
312 if (w & SSL_ST_CONNECT) str="SSL_connect";
313 else if (w & SSL_ST_ACCEPT) str="SSL_accept";
314 else str="undefined";
315
316 if (where & SSL_CB_LOOP)
317 {
318 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
319 }
320 else if (where & SSL_CB_ALERT)
321 {
322 str=(where & SSL_CB_READ)?"read":"write";
323 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
324 str,
325 SSL_alert_type_string_long(ret),
326 SSL_alert_desc_string_long(ret));
327 }
328 else if (where & SSL_CB_EXIT)
329 {
330 if (ret == 0)
331 BIO_printf(bio_err,"%s:failed in %s\n",
332 str,SSL_state_string_long(s));
333 else if (ret < 0)
334 {
335 BIO_printf(bio_err,"%s:error in %s\n",
336 str,SSL_state_string_long(s));
337 }
338 }
339 }
340
341
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)342 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
343 {
344 BIO *bio = arg;
345 const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
346
347 str_write_p = write_p ? ">>>" : "<<<";
348
349 switch (version)
350 {
351 case SSL2_VERSION:
352 str_version = "SSL 2.0";
353 break;
354 case SSL3_VERSION:
355 str_version = "SSL 3.0 ";
356 break;
357 case TLS1_VERSION:
358 str_version = "TLS 1.0 ";
359 break;
360 case TLS1_1_VERSION:
361 str_version = "TLS 1.1 ";
362 break;
363 case TLS1_2_VERSION:
364 str_version = "TLS 1.2 ";
365 break;
366 case DTLS1_VERSION:
367 str_version = "DTLS 1.0 ";
368 break;
369 case DTLS1_BAD_VER:
370 str_version = "DTLS 1.0 (bad) ";
371 break;
372 default:
373 str_version = "???";
374 }
375
376 if (version == SSL2_VERSION)
377 {
378 str_details1 = "???";
379
380 if (len > 0)
381 {
382 switch (((const unsigned char*)buf)[0])
383 {
384 case 0:
385 str_details1 = ", ERROR:";
386 str_details2 = " ???";
387 if (len >= 3)
388 {
389 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
390
391 switch (err)
392 {
393 case 0x0001:
394 str_details2 = " NO-CIPHER-ERROR";
395 break;
396 case 0x0002:
397 str_details2 = " NO-CERTIFICATE-ERROR";
398 break;
399 case 0x0004:
400 str_details2 = " BAD-CERTIFICATE-ERROR";
401 break;
402 case 0x0006:
403 str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
404 break;
405 }
406 }
407
408 break;
409 case 1:
410 str_details1 = ", CLIENT-HELLO";
411 break;
412 case 2:
413 str_details1 = ", CLIENT-MASTER-KEY";
414 break;
415 case 3:
416 str_details1 = ", CLIENT-FINISHED";
417 break;
418 case 4:
419 str_details1 = ", SERVER-HELLO";
420 break;
421 case 5:
422 str_details1 = ", SERVER-VERIFY";
423 break;
424 case 6:
425 str_details1 = ", SERVER-FINISHED";
426 break;
427 case 7:
428 str_details1 = ", REQUEST-CERTIFICATE";
429 break;
430 case 8:
431 str_details1 = ", CLIENT-CERTIFICATE";
432 break;
433 }
434 }
435 }
436
437 if (version == SSL3_VERSION ||
438 version == TLS1_VERSION ||
439 version == TLS1_1_VERSION ||
440 version == TLS1_2_VERSION ||
441 version == DTLS1_VERSION ||
442 version == DTLS1_BAD_VER)
443 {
444 switch (content_type)
445 {
446 case 20:
447 str_content_type = "ChangeCipherSpec";
448 break;
449 case 21:
450 str_content_type = "Alert";
451 break;
452 case 22:
453 str_content_type = "Handshake";
454 break;
455 }
456
457 if (content_type == 21) /* Alert */
458 {
459 str_details1 = ", ???";
460
461 if (len == 2)
462 {
463 switch (((const unsigned char*)buf)[0])
464 {
465 case 1:
466 str_details1 = ", warning";
467 break;
468 case 2:
469 str_details1 = ", fatal";
470 break;
471 }
472
473 str_details2 = " ???";
474 switch (((const unsigned char*)buf)[1])
475 {
476 case 0:
477 str_details2 = " close_notify";
478 break;
479 case 10:
480 str_details2 = " unexpected_message";
481 break;
482 case 20:
483 str_details2 = " bad_record_mac";
484 break;
485 case 21:
486 str_details2 = " decryption_failed";
487 break;
488 case 22:
489 str_details2 = " record_overflow";
490 break;
491 case 30:
492 str_details2 = " decompression_failure";
493 break;
494 case 40:
495 str_details2 = " handshake_failure";
496 break;
497 case 42:
498 str_details2 = " bad_certificate";
499 break;
500 case 43:
501 str_details2 = " unsupported_certificate";
502 break;
503 case 44:
504 str_details2 = " certificate_revoked";
505 break;
506 case 45:
507 str_details2 = " certificate_expired";
508 break;
509 case 46:
510 str_details2 = " certificate_unknown";
511 break;
512 case 47:
513 str_details2 = " illegal_parameter";
514 break;
515 case 48:
516 str_details2 = " unknown_ca";
517 break;
518 case 49:
519 str_details2 = " access_denied";
520 break;
521 case 50:
522 str_details2 = " decode_error";
523 break;
524 case 51:
525 str_details2 = " decrypt_error";
526 break;
527 case 60:
528 str_details2 = " export_restriction";
529 break;
530 case 70:
531 str_details2 = " protocol_version";
532 break;
533 case 71:
534 str_details2 = " insufficient_security";
535 break;
536 case 80:
537 str_details2 = " internal_error";
538 break;
539 case 90:
540 str_details2 = " user_canceled";
541 break;
542 case 100:
543 str_details2 = " no_renegotiation";
544 break;
545 case 110:
546 str_details2 = " unsupported_extension";
547 break;
548 case 111:
549 str_details2 = " certificate_unobtainable";
550 break;
551 case 112:
552 str_details2 = " unrecognized_name";
553 break;
554 case 113:
555 str_details2 = " bad_certificate_status_response";
556 break;
557 case 114:
558 str_details2 = " bad_certificate_hash_value";
559 break;
560 case 115:
561 str_details2 = " unknown_psk_identity";
562 break;
563 }
564 }
565 }
566
567 if (content_type == 22) /* Handshake */
568 {
569 str_details1 = "???";
570
571 if (len > 0)
572 {
573 switch (((const unsigned char*)buf)[0])
574 {
575 case 0:
576 str_details1 = ", HelloRequest";
577 break;
578 case 1:
579 str_details1 = ", ClientHello";
580 break;
581 case 2:
582 str_details1 = ", ServerHello";
583 break;
584 case 3:
585 str_details1 = ", HelloVerifyRequest";
586 break;
587 case 11:
588 str_details1 = ", Certificate";
589 break;
590 case 12:
591 str_details1 = ", ServerKeyExchange";
592 break;
593 case 13:
594 str_details1 = ", CertificateRequest";
595 break;
596 case 14:
597 str_details1 = ", ServerHelloDone";
598 break;
599 case 15:
600 str_details1 = ", CertificateVerify";
601 break;
602 case 16:
603 str_details1 = ", ClientKeyExchange";
604 break;
605 case 20:
606 str_details1 = ", Finished";
607 break;
608 }
609 }
610 }
611
612 #ifndef OPENSSL_NO_HEARTBEATS
613 if (content_type == 24) /* Heartbeat */
614 {
615 str_details1 = ", Heartbeat";
616
617 if (len > 0)
618 {
619 switch (((const unsigned char*)buf)[0])
620 {
621 case 1:
622 str_details1 = ", HeartbeatRequest";
623 break;
624 case 2:
625 str_details1 = ", HeartbeatResponse";
626 break;
627 }
628 }
629 }
630 #endif
631 }
632
633 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
634
635 if (len > 0)
636 {
637 size_t num, i;
638
639 BIO_printf(bio, " ");
640 num = len;
641 #if 0
642 if (num > 16)
643 num = 16;
644 #endif
645 for (i = 0; i < num; i++)
646 {
647 if (i % 16 == 0 && i > 0)
648 BIO_printf(bio, "\n ");
649 BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
650 }
651 if (i < len)
652 BIO_printf(bio, " ...");
653 BIO_printf(bio, "\n");
654 }
655 (void)BIO_flush(bio);
656 }
657
tlsext_cb(SSL * s,int client_server,int type,unsigned char * data,int len,void * arg)658 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
659 unsigned char *data, int len,
660 void *arg)
661 {
662 BIO *bio = arg;
663 char *extname;
664
665 switch(type)
666 {
667 case TLSEXT_TYPE_server_name:
668 extname = "server name";
669 break;
670
671 case TLSEXT_TYPE_max_fragment_length:
672 extname = "max fragment length";
673 break;
674
675 case TLSEXT_TYPE_client_certificate_url:
676 extname = "client certificate URL";
677 break;
678
679 case TLSEXT_TYPE_trusted_ca_keys:
680 extname = "trusted CA keys";
681 break;
682
683 case TLSEXT_TYPE_truncated_hmac:
684 extname = "truncated HMAC";
685 break;
686
687 case TLSEXT_TYPE_status_request:
688 extname = "status request";
689 break;
690
691 case TLSEXT_TYPE_user_mapping:
692 extname = "user mapping";
693 break;
694
695 case TLSEXT_TYPE_client_authz:
696 extname = "client authz";
697 break;
698
699 case TLSEXT_TYPE_server_authz:
700 extname = "server authz";
701 break;
702
703 case TLSEXT_TYPE_cert_type:
704 extname = "cert type";
705 break;
706
707 case TLSEXT_TYPE_elliptic_curves:
708 extname = "elliptic curves";
709 break;
710
711 case TLSEXT_TYPE_ec_point_formats:
712 extname = "EC point formats";
713 break;
714
715 case TLSEXT_TYPE_srp:
716 extname = "SRP";
717 break;
718
719 case TLSEXT_TYPE_signature_algorithms:
720 extname = "signature algorithms";
721 break;
722
723 case TLSEXT_TYPE_use_srtp:
724 extname = "use SRTP";
725 break;
726
727 case TLSEXT_TYPE_heartbeat:
728 extname = "heartbeat";
729 break;
730
731 case TLSEXT_TYPE_session_ticket:
732 extname = "session ticket";
733 break;
734
735 case TLSEXT_TYPE_renegotiate:
736 extname = "renegotiation info";
737 break;
738
739 #ifdef TLSEXT_TYPE_opaque_prf_input
740 case TLSEXT_TYPE_opaque_prf_input:
741 extname = "opaque PRF input";
742 break;
743 #endif
744 #ifdef TLSEXT_TYPE_next_proto_neg
745 case TLSEXT_TYPE_next_proto_neg:
746 extname = "next protocol";
747 break;
748 #endif
749
750 default:
751 extname = "unknown";
752 break;
753
754 }
755
756 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
757 client_server ? "server": "client",
758 extname, type, len);
759 BIO_dump(bio, (char *)data, len);
760 (void)BIO_flush(bio);
761 }
762
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)763 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
764 {
765 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
766 unsigned int length, resultlength;
767 union {
768 struct sockaddr sa;
769 struct sockaddr_in s4;
770 #if OPENSSL_USE_IPV6
771 struct sockaddr_in6 s6;
772 #endif
773 } peer;
774
775 /* Initialize a random secret */
776 if (!cookie_initialized)
777 {
778 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
779 {
780 BIO_printf(bio_err,"error setting random cookie secret\n");
781 return 0;
782 }
783 cookie_initialized = 1;
784 }
785
786 /* Read peer information */
787 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
788
789 /* Create buffer with peer's address and port */
790 length = 0;
791 switch (peer.sa.sa_family)
792 {
793 case AF_INET:
794 length += sizeof(struct in_addr);
795 length += sizeof(peer.s4.sin_port);
796 break;
797 #if OPENSSL_USE_IPV6
798 case AF_INET6:
799 length += sizeof(struct in6_addr);
800 length += sizeof(peer.s6.sin6_port);
801 break;
802 #endif
803 default:
804 OPENSSL_assert(0);
805 break;
806 }
807 buffer = OPENSSL_malloc(length);
808
809 if (buffer == NULL)
810 {
811 BIO_printf(bio_err,"out of memory\n");
812 return 0;
813 }
814
815 switch (peer.sa.sa_family)
816 {
817 case AF_INET:
818 memcpy(buffer,
819 &peer.s4.sin_port,
820 sizeof(peer.s4.sin_port));
821 memcpy(buffer + sizeof(peer.s4.sin_port),
822 &peer.s4.sin_addr,
823 sizeof(struct in_addr));
824 break;
825 #if OPENSSL_USE_IPV6
826 case AF_INET6:
827 memcpy(buffer,
828 &peer.s6.sin6_port,
829 sizeof(peer.s6.sin6_port));
830 memcpy(buffer + sizeof(peer.s6.sin6_port),
831 &peer.s6.sin6_addr,
832 sizeof(struct in6_addr));
833 break;
834 #endif
835 default:
836 OPENSSL_assert(0);
837 break;
838 }
839
840 /* Calculate HMAC of buffer using the secret */
841 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
842 buffer, length, result, &resultlength);
843 OPENSSL_free(buffer);
844
845 memcpy(cookie, result, resultlength);
846 *cookie_len = resultlength;
847
848 return 1;
849 }
850
verify_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int cookie_len)851 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
852 {
853 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
854 unsigned int length, resultlength;
855 union {
856 struct sockaddr sa;
857 struct sockaddr_in s4;
858 #if OPENSSL_USE_IPV6
859 struct sockaddr_in6 s6;
860 #endif
861 } peer;
862
863 /* If secret isn't initialized yet, the cookie can't be valid */
864 if (!cookie_initialized)
865 return 0;
866
867 /* Read peer information */
868 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
869
870 /* Create buffer with peer's address and port */
871 length = 0;
872 switch (peer.sa.sa_family)
873 {
874 case AF_INET:
875 length += sizeof(struct in_addr);
876 length += sizeof(peer.s4.sin_port);
877 break;
878 #if OPENSSL_USE_IPV6
879 case AF_INET6:
880 length += sizeof(struct in6_addr);
881 length += sizeof(peer.s6.sin6_port);
882 break;
883 #endif
884 default:
885 OPENSSL_assert(0);
886 break;
887 }
888 buffer = OPENSSL_malloc(length);
889
890 if (buffer == NULL)
891 {
892 BIO_printf(bio_err,"out of memory\n");
893 return 0;
894 }
895
896 switch (peer.sa.sa_family)
897 {
898 case AF_INET:
899 memcpy(buffer,
900 &peer.s4.sin_port,
901 sizeof(peer.s4.sin_port));
902 memcpy(buffer + sizeof(peer.s4.sin_port),
903 &peer.s4.sin_addr,
904 sizeof(struct in_addr));
905 break;
906 #if OPENSSL_USE_IPV6
907 case AF_INET6:
908 memcpy(buffer,
909 &peer.s6.sin6_port,
910 sizeof(peer.s6.sin6_port));
911 memcpy(buffer + sizeof(peer.s6.sin6_port),
912 &peer.s6.sin6_addr,
913 sizeof(struct in6_addr));
914 break;
915 #endif
916 default:
917 OPENSSL_assert(0);
918 break;
919 }
920
921 /* Calculate HMAC of buffer using the secret */
922 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
923 buffer, length, result, &resultlength);
924 OPENSSL_free(buffer);
925
926 if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
927 return 1;
928
929 return 0;
930 }
931