const fixes
[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) 1998-2001 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/x509.h>
121 #include <openssl/ssl.h>
122 #include "s_apps.h"
123
124 int verify_depth=0;
125 int verify_error=X509_V_OK;
126
127 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
128         {
129         char buf[256];
130         X509 *err_cert;
131         int err,depth;
132
133         err_cert=X509_STORE_CTX_get_current_cert(ctx);
134         err=    X509_STORE_CTX_get_error(ctx);
135         depth=  X509_STORE_CTX_get_error_depth(ctx);
136
137         X509_NAME_oneline(X509_get_subject_name(err_cert),buf,sizeof buf);
138         BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
139         if (!ok)
140                 {
141                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
142                         X509_verify_cert_error_string(err));
143                 if (verify_depth >= depth)
144                         {
145                         ok=1;
146                         verify_error=X509_V_OK;
147                         }
148                 else
149                         {
150                         ok=0;
151                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
152                         }
153                 }
154         switch (ctx->error)
155                 {
156         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
157                 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,sizeof buf);
158                 BIO_printf(bio_err,"issuer= %s\n",buf);
159                 break;
160         case X509_V_ERR_CERT_NOT_YET_VALID:
161         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
162                 BIO_printf(bio_err,"notBefore=");
163                 ASN1_TIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
164                 BIO_printf(bio_err,"\n");
165                 break;
166         case X509_V_ERR_CERT_HAS_EXPIRED:
167         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
168                 BIO_printf(bio_err,"notAfter=");
169                 ASN1_TIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
170                 BIO_printf(bio_err,"\n");
171                 break;
172                 }
173         BIO_printf(bio_err,"verify return:%d\n",ok);
174         return(ok);
175         }
176
177 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
178         {
179         if (cert_file != NULL)
180                 {
181                 /*
182                 SSL *ssl;
183                 X509 *x509;
184                 */
185
186                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
187                         SSL_FILETYPE_PEM) <= 0)
188                         {
189                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
190                         ERR_print_errors(bio_err);
191                         return(0);
192                         }
193                 if (key_file == NULL) key_file=cert_file;
194                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
195                         SSL_FILETYPE_PEM) <= 0)
196                         {
197                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
198                         ERR_print_errors(bio_err);
199                         return(0);
200                         }
201
202                 /*
203                 In theory this is no longer needed 
204                 ssl=SSL_new(ctx);
205                 x509=SSL_get_certificate(ssl);
206
207                 if (x509 != NULL) {
208                         EVP_PKEY *pktmp;
209                         pktmp = X509_get_pubkey(x509);
210                         EVP_PKEY_copy_parameters(pktmp,
211                                                 SSL_get_privatekey(ssl));
212                         EVP_PKEY_free(pktmp);
213                 }
214                 SSL_free(ssl);
215                 */
216
217                 /* If we are using DSA, we can copy the parameters from
218                  * the private key */
219                 
220                 
221                 /* Now we know that a key and cert have been set against
222                  * the SSL context */
223                 if (!SSL_CTX_check_private_key(ctx))
224                         {
225                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
226                         return(0);
227                         }
228                 }
229         return(1);
230         }
231
232 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
233         {
234         if (cert ==  NULL)
235                 return 1;
236         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
237                 {
238                 BIO_printf(bio_err,"error setting certificate\n");
239                 ERR_print_errors(bio_err);
240                 return 0;
241                 }
242         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
243                 {
244                 BIO_printf(bio_err,"error setting private key\n");
245                 ERR_print_errors(bio_err);
246                 return 0;
247                 }
248
249                 
250                 /* Now we know that a key and cert have been set against
251                  * the SSL context */
252         if (!SSL_CTX_check_private_key(ctx))
253                 {
254                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
255                 return 0;
256                 }
257         return 1;
258         }
259
260 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
261         int argi, long argl, long ret)
262         {
263         BIO *out;
264
265         out=(BIO *)BIO_get_callback_arg(bio);
266         if (out == NULL) return(ret);
267
268         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
269                 {
270                 BIO_printf(out,"read from %p [%p] (%d bytes => %ld (0x%lX))\n",
271                         (void *)bio,argp,argi,ret,ret);
272                 BIO_dump(out,argp,(int)ret);
273                 return(ret);
274                 }
275         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
276                 {
277                 BIO_printf(out,"write to %p [%p] (%d bytes => %ld (0x%lX))\n",
278                         (void *)bio,argp,argi,ret,ret);
279                 BIO_dump(out,argp,(int)ret);
280                 }
281         return(ret);
282         }
283
284 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
285         {
286         const char *str;
287         int w;
288
289         w=where& ~SSL_ST_MASK;
290
291         if (w & SSL_ST_CONNECT) str="SSL_connect";
292         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
293         else str="undefined";
294
295         if (where & SSL_CB_LOOP)
296                 {
297                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
298                 }
299         else if (where & SSL_CB_ALERT)
300                 {
301                 str=(where & SSL_CB_READ)?"read":"write";
302                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
303                         str,
304                         SSL_alert_type_string_long(ret),
305                         SSL_alert_desc_string_long(ret));
306                 }
307         else if (where & SSL_CB_EXIT)
308                 {
309                 if (ret == 0)
310                         BIO_printf(bio_err,"%s:failed in %s\n",
311                                 str,SSL_state_string_long(s));
312                 else if (ret < 0)
313                         {
314                         BIO_printf(bio_err,"%s:error in %s\n",
315                                 str,SSL_state_string_long(s));
316                         }
317                 }
318         }
319
320
321 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
322         {
323         BIO *bio = arg;
324         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
325         
326         str_write_p = write_p ? ">>>" : "<<<";
327
328         switch (version)
329                 {
330         case SSL2_VERSION:
331                 str_version = "SSL 2.0";
332                 break;
333         case SSL3_VERSION:
334                 str_version = "SSL 3.0 ";
335                 break;
336         case TLS1_VERSION:
337                 str_version = "TLS 1.0 ";
338                 break;
339         default:
340                 str_version = "???";
341                 }
342
343         if (version == SSL2_VERSION)
344                 {
345                 str_details1 = "???";
346
347                 if (len > 0)
348                         {
349                         switch (((const unsigned char*)buf)[0])
350                                 {
351                                 case 0:
352                                         str_details1 = ", ERROR:";
353                                         str_details2 = " ???";
354                                         if (len >= 3)
355                                                 {
356                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
357                                                 
358                                                 switch (err)
359                                                         {
360                                                 case 0x0001:
361                                                         str_details2 = " NO-CIPHER-ERROR";
362                                                         break;
363                                                 case 0x0002:
364                                                         str_details2 = " NO-CERTIFICATE-ERROR";
365                                                         break;
366                                                 case 0x0004:
367                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
368                                                         break;
369                                                 case 0x0006:
370                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
371                                                         break;
372                                                         }
373                                                 }
374
375                                         break;
376                                 case 1:
377                                         str_details1 = ", CLIENT-HELLO";
378                                         break;
379                                 case 2:
380                                         str_details1 = ", CLIENT-MASTER-KEY";
381                                         break;
382                                 case 3:
383                                         str_details1 = ", CLIENT-FINISHED";
384                                         break;
385                                 case 4:
386                                         str_details1 = ", SERVER-HELLO";
387                                         break;
388                                 case 5:
389                                         str_details1 = ", SERVER-VERIFY";
390                                         break;
391                                 case 6:
392                                         str_details1 = ", SERVER-FINISHED";
393                                         break;
394                                 case 7:
395                                         str_details1 = ", REQUEST-CERTIFICATE";
396                                         break;
397                                 case 8:
398                                         str_details1 = ", CLIENT-CERTIFICATE";
399                                         break;
400                                 }
401                         }
402                 }
403
404         if (version == SSL3_VERSION || version == TLS1_VERSION)
405                 {
406                 switch (content_type)
407                         {
408                 case 20:
409                         str_content_type = "ChangeCipherSpec";
410                         break;
411                 case 21:
412                         str_content_type = "Alert";
413                         break;
414                 case 22:
415                         str_content_type = "Handshake";
416                         break;
417                         }
418
419                 if (content_type == 21) /* Alert */
420                         {
421                         str_details1 = ", ???";
422                         
423                         if (len == 2)
424                                 {
425                                 switch (((const unsigned char*)buf)[0])
426                                         {
427                                 case 1:
428                                         str_details1 = ", warning";
429                                         break;
430                                 case 2:
431                                         str_details1 = ", fatal";
432                                         break;
433                                         }
434
435                                 str_details2 = " ???";
436                                 switch (((const unsigned char*)buf)[1])
437                                         {
438                                 case 0:
439                                         str_details2 = " close_notify";
440                                         break;
441                                 case 10:
442                                         str_details2 = " unexpected_message";
443                                         break;
444                                 case 20:
445                                         str_details2 = " bad_record_mac";
446                                         break;
447                                 case 21:
448                                         str_details2 = " decryption_failed";
449                                         break;
450                                 case 22:
451                                         str_details2 = " record_overflow";
452                                         break;
453                                 case 30:
454                                         str_details2 = " decompression_failure";
455                                         break;
456                                 case 40:
457                                         str_details2 = " handshake_failure";
458                                         break;
459                                 case 42:
460                                         str_details2 = " bad_certificate";
461                                         break;
462                                 case 43:
463                                         str_details2 = " unsupported_certificate";
464                                         break;
465                                 case 44:
466                                         str_details2 = " certificate_revoked";
467                                         break;
468                                 case 45:
469                                         str_details2 = " certificate_expired";
470                                         break;
471                                 case 46:
472                                         str_details2 = " certificate_unknown";
473                                         break;
474                                 case 47:
475                                         str_details2 = " illegal_parameter";
476                                         break;
477                                 case 48:
478                                         str_details2 = " unknown_ca";
479                                         break;
480                                 case 49:
481                                         str_details2 = " access_denied";
482                                         break;
483                                 case 50:
484                                         str_details2 = " decode_error";
485                                         break;
486                                 case 51:
487                                         str_details2 = " decrypt_error";
488                                         break;
489                                 case 60:
490                                         str_details2 = " export_restriction";
491                                         break;
492                                 case 70:
493                                         str_details2 = " protocol_version";
494                                         break;
495                                 case 71:
496                                         str_details2 = " insufficient_security";
497                                         break;
498                                 case 80:
499                                         str_details2 = " internal_error";
500                                         break;
501                                 case 90:
502                                         str_details2 = " user_canceled";
503                                         break;
504                                 case 100:
505                                         str_details2 = " no_renegotiation";
506                                         break;
507                                         }
508                                 }
509                         }
510                 
511                 if (content_type == 22) /* Handshake */
512                         {
513                         str_details1 = "???";
514
515                         if (len > 0)
516                                 {
517                                 switch (((const unsigned char*)buf)[0])
518                                         {
519                                 case 0:
520                                         str_details1 = ", HelloRequest";
521                                         break;
522                                 case 1:
523                                         str_details1 = ", ClientHello";
524                                         break;
525                                 case 2:
526                                         str_details1 = ", ServerHello";
527                                         break;
528                                 case 11:
529                                         str_details1 = ", Certificate";
530                                         break;
531                                 case 12:
532                                         str_details1 = ", ServerKeyExchange";
533                                         break;
534                                 case 13:
535                                         str_details1 = ", CertificateRequest";
536                                         break;
537                                 case 14:
538                                         str_details1 = ", ServerHelloDone";
539                                         break;
540                                 case 15:
541                                         str_details1 = ", CertificateVerify";
542                                         break;
543                                 case 16:
544                                         str_details1 = ", ClientKeyExchange";
545                                         break;
546                                 case 20:
547                                         str_details1 = ", Finished";
548                                         break;
549                                         }
550                                 }
551                         }
552                 }
553
554         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);
555
556         if (len > 0)
557                 {
558                 size_t num, i;
559                 
560                 BIO_printf(bio, "   ");
561                 num = len;
562 #if 0
563                 if (num > 16)
564                         num = 16;
565 #endif
566                 for (i = 0; i < num; i++)
567                         {
568                         if (i % 16 == 0 && i > 0)
569                                 BIO_printf(bio, "\n   ");
570                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
571                         }
572                 if (i < len)
573                         BIO_printf(bio, " ...");
574                 BIO_printf(bio, "\n");
575                 }
576         BIO_flush(bio);
577         }