New ctrls to retrieve supported signature algorithms and curves and
[openssl.git] / apps / s_cb.c
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
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
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
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
281 int ssl_print_sigalgs(BIO *out, SSL *s)
282         {
283         int i, nsig;
284         nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
285         if (nsig == 0)
286                 return 1;
287
288         BIO_puts(out, "Signature Algorithms: ");
289         for (i = 0; i < nsig; i++)
290                 {
291                 int hash_nid, sign_nid;
292                 unsigned char rhash, rsign;
293                 const char *sstr = NULL;
294                 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
295                                                         &rsign, &rhash);
296                 if (i)
297                         BIO_puts(out, ":");
298                 if (sign_nid == EVP_PKEY_RSA)
299                         sstr = "RSA";
300                 else if(sign_nid == EVP_PKEY_DSA)
301                         sstr = "DSA";
302                 else if(sign_nid == EVP_PKEY_EC)
303                         sstr = "ECDSA";
304                 if (sstr)
305                         BIO_printf(out,"%s+", sstr);
306                 else
307                         BIO_printf(out,"0x%02X+", (int)rsign);
308                 if (hash_nid != NID_undef)
309                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
310                 else
311                         BIO_printf(out,"0x%02X", (int)rhash);
312                 }
313         BIO_puts(out, "\n");
314         return 1;
315         }
316
317 int ssl_print_curves(BIO *out, SSL *s)
318         {
319         int i, ncurves, *curves;
320         ncurves = SSL_get1_curvelist(s, NULL);
321         if (ncurves <= 0)
322                 return 1;
323         curves = OPENSSL_malloc(ncurves * sizeof(int));
324         SSL_get1_curvelist(s, curves);
325
326         BIO_puts(out, "Supported Elliptic Curves: ");
327         for (i = 0; i < ncurves; i++)
328                 {
329                 int nid;
330                 const char *cname;
331                 if (i)
332                         BIO_puts(out, ":");
333                 nid = curves[i];
334                 /* If unrecognised print out hex version */
335                 if (nid & TLSEXT_nid_unknown)
336                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
337                 else
338                         {
339                         /* Use NIST name for curve if it exists */
340                         cname = EC_curve_nid2nist(nid);
341                         if (!cname)
342                                 cname = OBJ_nid2sn(nid);
343                         BIO_printf(out, "%s", cname);
344                         }
345                 }
346         BIO_puts(out, "\n");
347         OPENSSL_free(curves);
348         return 1;
349         }
350
351
352 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
353                                    int argi, long argl, long ret)
354         {
355         BIO *out;
356
357         out=(BIO *)BIO_get_callback_arg(bio);
358         if (out == NULL) return(ret);
359
360         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
361                 {
362                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
363                         (void *)bio,argp,(unsigned long)argi,ret,ret);
364                 BIO_dump(out,argp,(int)ret);
365                 return(ret);
366                 }
367         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
368                 {
369                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
370                         (void *)bio,argp,(unsigned long)argi,ret,ret);
371                 BIO_dump(out,argp,(int)ret);
372                 }
373         return(ret);
374         }
375
376 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
377         {
378         const char *str;
379         int w;
380
381         w=where& ~SSL_ST_MASK;
382
383         if (w & SSL_ST_CONNECT) str="SSL_connect";
384         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
385         else str="undefined";
386
387         if (where & SSL_CB_LOOP)
388                 {
389                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
390                 }
391         else if (where & SSL_CB_ALERT)
392                 {
393                 str=(where & SSL_CB_READ)?"read":"write";
394                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
395                         str,
396                         SSL_alert_type_string_long(ret),
397                         SSL_alert_desc_string_long(ret));
398                 }
399         else if (where & SSL_CB_EXIT)
400                 {
401                 if (ret == 0)
402                         BIO_printf(bio_err,"%s:failed in %s\n",
403                                 str,SSL_state_string_long(s));
404                 else if (ret < 0)
405                         {
406                         BIO_printf(bio_err,"%s:error in %s\n",
407                                 str,SSL_state_string_long(s));
408                         }
409                 }
410         }
411
412
413 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
414         {
415         BIO *bio = arg;
416         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
417         
418         str_write_p = write_p ? ">>>" : "<<<";
419
420         switch (version)
421                 {
422         case SSL2_VERSION:
423                 str_version = "SSL 2.0";
424                 break;
425         case SSL3_VERSION:
426                 str_version = "SSL 3.0 ";
427                 break;
428         case TLS1_VERSION:
429                 str_version = "TLS 1.0 ";
430                 break;
431         case TLS1_1_VERSION:
432                 str_version = "TLS 1.1 ";
433                 break;
434         case TLS1_2_VERSION:
435                 str_version = "TLS 1.2 ";
436                 break;
437         case DTLS1_VERSION:
438                 str_version = "DTLS 1.0 ";
439                 break;
440         case DTLS1_BAD_VER:
441                 str_version = "DTLS 1.0 (bad) ";
442                 break;
443         default:
444                 str_version = "???";
445                 }
446
447         if (version == SSL2_VERSION)
448                 {
449                 str_details1 = "???";
450
451                 if (len > 0)
452                         {
453                         switch (((const unsigned char*)buf)[0])
454                                 {
455                                 case 0:
456                                         str_details1 = ", ERROR:";
457                                         str_details2 = " ???";
458                                         if (len >= 3)
459                                                 {
460                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
461                                                 
462                                                 switch (err)
463                                                         {
464                                                 case 0x0001:
465                                                         str_details2 = " NO-CIPHER-ERROR";
466                                                         break;
467                                                 case 0x0002:
468                                                         str_details2 = " NO-CERTIFICATE-ERROR";
469                                                         break;
470                                                 case 0x0004:
471                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
472                                                         break;
473                                                 case 0x0006:
474                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
475                                                         break;
476                                                         }
477                                                 }
478
479                                         break;
480                                 case 1:
481                                         str_details1 = ", CLIENT-HELLO";
482                                         break;
483                                 case 2:
484                                         str_details1 = ", CLIENT-MASTER-KEY";
485                                         break;
486                                 case 3:
487                                         str_details1 = ", CLIENT-FINISHED";
488                                         break;
489                                 case 4:
490                                         str_details1 = ", SERVER-HELLO";
491                                         break;
492                                 case 5:
493                                         str_details1 = ", SERVER-VERIFY";
494                                         break;
495                                 case 6:
496                                         str_details1 = ", SERVER-FINISHED";
497                                         break;
498                                 case 7:
499                                         str_details1 = ", REQUEST-CERTIFICATE";
500                                         break;
501                                 case 8:
502                                         str_details1 = ", CLIENT-CERTIFICATE";
503                                         break;
504                                 }
505                         }
506                 }
507
508         if (version == SSL3_VERSION ||
509             version == TLS1_VERSION ||
510             version == DTLS1_VERSION ||
511             version == DTLS1_BAD_VER)
512                 {
513                 switch (content_type)
514                         {
515                 case 20:
516                         str_content_type = "ChangeCipherSpec";
517                         break;
518                 case 21:
519                         str_content_type = "Alert";
520                         break;
521                 case 22:
522                         str_content_type = "Handshake";
523                         break;
524                         }
525
526                 if (content_type == 21) /* Alert */
527                         {
528                         str_details1 = ", ???";
529                         
530                         if (len == 2)
531                                 {
532                                 switch (((const unsigned char*)buf)[0])
533                                         {
534                                 case 1:
535                                         str_details1 = ", warning";
536                                         break;
537                                 case 2:
538                                         str_details1 = ", fatal";
539                                         break;
540                                         }
541
542                                 str_details2 = " ???";
543                                 switch (((const unsigned char*)buf)[1])
544                                         {
545                                 case 0:
546                                         str_details2 = " close_notify";
547                                         break;
548                                 case 10:
549                                         str_details2 = " unexpected_message";
550                                         break;
551                                 case 20:
552                                         str_details2 = " bad_record_mac";
553                                         break;
554                                 case 21:
555                                         str_details2 = " decryption_failed";
556                                         break;
557                                 case 22:
558                                         str_details2 = " record_overflow";
559                                         break;
560                                 case 30:
561                                         str_details2 = " decompression_failure";
562                                         break;
563                                 case 40:
564                                         str_details2 = " handshake_failure";
565                                         break;
566                                 case 42:
567                                         str_details2 = " bad_certificate";
568                                         break;
569                                 case 43:
570                                         str_details2 = " unsupported_certificate";
571                                         break;
572                                 case 44:
573                                         str_details2 = " certificate_revoked";
574                                         break;
575                                 case 45:
576                                         str_details2 = " certificate_expired";
577                                         break;
578                                 case 46:
579                                         str_details2 = " certificate_unknown";
580                                         break;
581                                 case 47:
582                                         str_details2 = " illegal_parameter";
583                                         break;
584                                 case 48:
585                                         str_details2 = " unknown_ca";
586                                         break;
587                                 case 49:
588                                         str_details2 = " access_denied";
589                                         break;
590                                 case 50:
591                                         str_details2 = " decode_error";
592                                         break;
593                                 case 51:
594                                         str_details2 = " decrypt_error";
595                                         break;
596                                 case 60:
597                                         str_details2 = " export_restriction";
598                                         break;
599                                 case 70:
600                                         str_details2 = " protocol_version";
601                                         break;
602                                 case 71:
603                                         str_details2 = " insufficient_security";
604                                         break;
605                                 case 80:
606                                         str_details2 = " internal_error";
607                                         break;
608                                 case 90:
609                                         str_details2 = " user_canceled";
610                                         break;
611                                 case 100:
612                                         str_details2 = " no_renegotiation";
613                                         break;
614                                 case 110:
615                                         str_details2 = " unsupported_extension";
616                                         break;
617                                 case 111:
618                                         str_details2 = " certificate_unobtainable";
619                                         break;
620                                 case 112:
621                                         str_details2 = " unrecognized_name";
622                                         break;
623                                 case 113:
624                                         str_details2 = " bad_certificate_status_response";
625                                         break;
626                                 case 114:
627                                         str_details2 = " bad_certificate_hash_value";
628                                         break;
629                                 case 115:
630                                         str_details2 = " unknown_psk_identity";
631                                         break;
632                                         }
633                                 }
634                         }
635                 
636                 if (content_type == 22) /* Handshake */
637                         {
638                         str_details1 = "???";
639
640                         if (len > 0)
641                                 {
642                                 switch (((const unsigned char*)buf)[0])
643                                         {
644                                 case 0:
645                                         str_details1 = ", HelloRequest";
646                                         break;
647                                 case 1:
648                                         str_details1 = ", ClientHello";
649                                         break;
650                                 case 2:
651                                         str_details1 = ", ServerHello";
652                                         break;
653                                 case 3:
654                                         str_details1 = ", HelloVerifyRequest";
655                                         break;
656                                 case 11:
657                                         str_details1 = ", Certificate";
658                                         break;
659                                 case 12:
660                                         str_details1 = ", ServerKeyExchange";
661                                         break;
662                                 case 13:
663                                         str_details1 = ", CertificateRequest";
664                                         break;
665                                 case 14:
666                                         str_details1 = ", ServerHelloDone";
667                                         break;
668                                 case 15:
669                                         str_details1 = ", CertificateVerify";
670                                         break;
671                                 case 16:
672                                         str_details1 = ", ClientKeyExchange";
673                                         break;
674                                 case 20:
675                                         str_details1 = ", Finished";
676                                         break;
677                                         }
678                                 }
679                         }
680
681 #ifndef OPENSSL_NO_HEARTBEATS
682                 if (content_type == 24) /* Heartbeat */
683                         {
684                         str_details1 = ", Heartbeat";
685                         
686                         if (len > 0)
687                                 {
688                                 switch (((const unsigned char*)buf)[0])
689                                         {
690                                 case 1:
691                                         str_details1 = ", HeartbeatRequest";
692                                         break;
693                                 case 2:
694                                         str_details1 = ", HeartbeatResponse";
695                                         break;
696                                         }
697                                 }
698                         }
699 #endif
700                 }
701
702         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);
703
704         if (len > 0)
705                 {
706                 size_t num, i;
707                 
708                 BIO_printf(bio, "   ");
709                 num = len;
710 #if 0
711                 if (num > 16)
712                         num = 16;
713 #endif
714                 for (i = 0; i < num; i++)
715                         {
716                         if (i % 16 == 0 && i > 0)
717                                 BIO_printf(bio, "\n   ");
718                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
719                         }
720                 if (i < len)
721                         BIO_printf(bio, " ...");
722                 BIO_printf(bio, "\n");
723                 }
724         (void)BIO_flush(bio);
725         }
726
727 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
728                                         unsigned char *data, int len,
729                                         void *arg)
730         {
731         BIO *bio = arg;
732         char *extname;
733
734         switch(type)
735                 {
736                 case TLSEXT_TYPE_server_name:
737                 extname = "server name";
738                 break;
739
740                 case TLSEXT_TYPE_max_fragment_length:
741                 extname = "max fragment length";
742                 break;
743
744                 case TLSEXT_TYPE_client_certificate_url:
745                 extname = "client certificate URL";
746                 break;
747
748                 case TLSEXT_TYPE_trusted_ca_keys:
749                 extname = "trusted CA keys";
750                 break;
751
752                 case TLSEXT_TYPE_truncated_hmac:
753                 extname = "truncated HMAC";
754                 break;
755
756                 case TLSEXT_TYPE_status_request:
757                 extname = "status request";
758                 break;
759
760                 case TLSEXT_TYPE_elliptic_curves:
761                 extname = "elliptic curves";
762                 break;
763
764                 case TLSEXT_TYPE_ec_point_formats:
765                 extname = "EC point formats";
766                 break;
767
768                 case TLSEXT_TYPE_session_ticket:
769                 extname = "server ticket";
770                 break;
771
772                 case TLSEXT_TYPE_renegotiate:
773                 extname = "renegotiate";
774                 break;
775
776                 case TLSEXT_TYPE_signature_algorithms:
777                 extname = "signature algorithms";
778                 break;
779
780 #ifdef TLSEXT_TYPE_opaque_prf_input
781                 case TLSEXT_TYPE_opaque_prf_input:
782                 extname = "opaque PRF input";
783                 break;
784 #endif
785
786                 default:
787                 extname = "unknown";
788                 break;
789
790                 }
791         
792         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
793                         client_server ? "server": "client",
794                         extname, type, len);
795         BIO_dump(bio, (char *)data, len);
796         (void)BIO_flush(bio);
797         }
798
799 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
800         {
801         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
802         unsigned int length, resultlength;
803         union {
804                 struct sockaddr sa;
805                 struct sockaddr_in s4;
806 #if OPENSSL_USE_IPV6
807                 struct sockaddr_in6 s6;
808 #endif
809         } peer;
810
811         /* Initialize a random secret */
812         if (!cookie_initialized)
813                 {
814                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
815                         {
816                         BIO_printf(bio_err,"error setting random cookie secret\n");
817                         return 0;
818                         }
819                 cookie_initialized = 1;
820                 }
821
822         /* Read peer information */
823         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
824
825         /* Create buffer with peer's address and port */
826         length = 0;
827         switch (peer.sa.sa_family)
828                 {
829         case AF_INET:
830                 length += sizeof(struct in_addr);
831                 length += sizeof(peer.s4.sin_port);
832                 break;
833 #if OPENSSL_USE_IPV6
834         case AF_INET6:
835                 length += sizeof(struct in6_addr);
836                 length += sizeof(peer.s6.sin6_port);
837                 break;
838 #endif
839         default:
840                 OPENSSL_assert(0);
841                 break;
842                 }
843         buffer = OPENSSL_malloc(length);
844
845         if (buffer == NULL)
846                 {
847                 BIO_printf(bio_err,"out of memory\n");
848                 return 0;
849                 }
850
851         switch (peer.sa.sa_family)
852                 {
853         case AF_INET:
854                 memcpy(buffer,
855                        &peer.s4.sin_port,
856                        sizeof(peer.s4.sin_port));
857                 memcpy(buffer + sizeof(peer.s4.sin_port),
858                        &peer.s4.sin_addr,
859                        sizeof(struct in_addr));
860                 break;
861 #if OPENSSL_USE_IPV6
862         case AF_INET6:
863                 memcpy(buffer,
864                        &peer.s6.sin6_port,
865                        sizeof(peer.s6.sin6_port));
866                 memcpy(buffer + sizeof(peer.s6.sin6_port),
867                        &peer.s6.sin6_addr,
868                        sizeof(struct in6_addr));
869                 break;
870 #endif
871         default:
872                 OPENSSL_assert(0);
873                 break;
874                 }
875
876         /* Calculate HMAC of buffer using the secret */
877         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
878              buffer, length, result, &resultlength);
879         OPENSSL_free(buffer);
880
881         memcpy(cookie, result, resultlength);
882         *cookie_len = resultlength;
883
884         return 1;
885         }
886
887 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
888         {
889         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
890         unsigned int length, resultlength;
891         union {
892                 struct sockaddr sa;
893                 struct sockaddr_in s4;
894 #if OPENSSL_USE_IPV6
895                 struct sockaddr_in6 s6;
896 #endif
897         } peer;
898
899         /* If secret isn't initialized yet, the cookie can't be valid */
900         if (!cookie_initialized)
901                 return 0;
902
903         /* Read peer information */
904         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
905
906         /* Create buffer with peer's address and port */
907         length = 0;
908         switch (peer.sa.sa_family)
909                 {
910         case AF_INET:
911                 length += sizeof(struct in_addr);
912                 length += sizeof(peer.s4.sin_port);
913                 break;
914 #if OPENSSL_USE_IPV6
915         case AF_INET6:
916                 length += sizeof(struct in6_addr);
917                 length += sizeof(peer.s6.sin6_port);
918                 break;
919 #endif
920         default:
921                 OPENSSL_assert(0);
922                 break;
923                 }
924         buffer = OPENSSL_malloc(length);
925         
926         if (buffer == NULL)
927                 {
928                 BIO_printf(bio_err,"out of memory\n");
929                 return 0;
930                 }
931
932         switch (peer.sa.sa_family)
933                 {
934         case AF_INET:
935                 memcpy(buffer,
936                        &peer.s4.sin_port,
937                        sizeof(peer.s4.sin_port));
938                 memcpy(buffer + sizeof(peer.s4.sin_port),
939                        &peer.s4.sin_addr,
940                        sizeof(struct in_addr));
941                 break;
942 #if OPENSSL_USE_IPV6
943         case AF_INET6:
944                 memcpy(buffer,
945                        &peer.s6.sin6_port,
946                        sizeof(peer.s6.sin6_port));
947                 memcpy(buffer + sizeof(peer.s6.sin6_port),
948                        &peer.s6.sin6_addr,
949                        sizeof(struct in6_addr));
950                 break;
951 #endif
952         default:
953                 OPENSSL_assert(0);
954                 break;
955                 }
956
957         /* Calculate HMAC of buffer using the secret */
958         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
959              buffer, length, result, &resultlength);
960         OPENSSL_free(buffer);
961
962         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
963                 return 1;
964
965         return 0;
966         }