fast reduction for NIST curves
[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,256);
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,256);
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 long MS_CALLBACK bio_dump_cb(BIO *bio, int cmd, const char *argp, int argi,
233              long argl, long ret)
234         {
235         BIO *out;
236
237         out=(BIO *)BIO_get_callback_arg(bio);
238         if (out == NULL) return(ret);
239
240         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
241                 {
242                 BIO_printf(out,"read from %08X [%08lX] (%d bytes => %ld (0x%X))\n",
243                         bio,argp,argi,ret,ret);
244                 BIO_dump(out,argp,(int)ret);
245                 return(ret);
246                 }
247         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
248                 {
249                 BIO_printf(out,"write to %08X [%08lX] (%d bytes => %ld (0x%X))\n",
250                         bio,argp,argi,ret,ret);
251                 BIO_dump(out,argp,(int)ret);
252                 }
253         return(ret);
254         }
255
256 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
257         {
258         char *str;
259         int w;
260
261         w=where& ~SSL_ST_MASK;
262
263         if (w & SSL_ST_CONNECT) str="SSL_connect";
264         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
265         else str="undefined";
266
267         if (where & SSL_CB_LOOP)
268                 {
269                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
270                 }
271         else if (where & SSL_CB_ALERT)
272                 {
273                 str=(where & SSL_CB_READ)?"read":"write";
274                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
275                         str,
276                         SSL_alert_type_string_long(ret),
277                         SSL_alert_desc_string_long(ret));
278                 }
279         else if (where & SSL_CB_EXIT)
280                 {
281                 if (ret == 0)
282                         BIO_printf(bio_err,"%s:failed in %s\n",
283                                 str,SSL_state_string_long(s));
284                 else if (ret < 0)
285                         {
286                         BIO_printf(bio_err,"%s:error in %s\n",
287                                 str,SSL_state_string_long(s));
288                         }
289                 }
290         }
291
292
293 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
294         {
295         BIO *bio = arg;
296         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
297         
298         str_write_p = write_p ? ">>>" : "<<<";
299
300         switch (version)
301                 {
302         case SSL2_VERSION:
303                 str_version = "SSL 2.0";
304                 break;
305         case SSL3_VERSION:
306                 str_version = "SSL 3.0 ";
307                 break;
308         case TLS1_VERSION:
309                 str_version = "TLS 1.0 ";
310                 break;
311         default:
312                 str_version = "???";
313                 }
314
315         if (version == SSL2_VERSION)
316                 {
317                 str_details1 = "???";
318
319                 if (len > 0)
320                         {
321                         switch (((unsigned char*)buf)[0])
322                                 {
323                                 case 0:
324                                         str_details1 = ", ERROR:";
325                                         str_details2 = " ???";
326                                         if (len >= 3)
327                                                 {
328                                                 unsigned err = (((unsigned char*)buf)[1]<<8) + ((unsigned char*)buf)[2];
329                                                 
330                                                 switch (err)
331                                                         {
332                                                 case 0x0001:
333                                                         str_details2 = " NO-CIPHER-ERROR";
334                                                         break;
335                                                 case 0x0002:
336                                                         str_details2 = " NO-CERTIFICATE-ERROR";
337                                                         break;
338                                                 case 0x0004:
339                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
340                                                         break;
341                                                 case 0x0006:
342                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
343                                                         break;
344                                                         }
345                                                 }
346
347                                         break;
348                                 case 1:
349                                         str_details1 = ", CLIENT-HELLO";
350                                         break;
351                                 case 2:
352                                         str_details1 = ", CLIENT-MASTER-KEY";
353                                         break;
354                                 case 3:
355                                         str_details1 = ", CLIENT-FINISHED";
356                                         break;
357                                 case 4:
358                                         str_details1 = ", SERVER-HELLO";
359                                         break;
360                                 case 5:
361                                         str_details1 = ", SERVER-VERIFY";
362                                         break;
363                                 case 6:
364                                         str_details1 = ", SERVER-FINISHED";
365                                         break;
366                                 case 7:
367                                         str_details1 = ", REQUEST-CERTIFICATE";
368                                         break;
369                                 case 8:
370                                         str_details1 = ", CLIENT-CERTIFICATE";
371                                         break;
372                                 }
373                         }
374                 }
375
376         if (version == SSL3_VERSION || version == TLS1_VERSION)
377                 {
378                 switch (content_type)
379                         {
380                 case 20:
381                         str_content_type = "ChangeCipherSpec";
382                         break;
383                 case 21:
384                         str_content_type = "Alert";
385                         break;
386                 case 22:
387                         str_content_type = "Handshake";
388                         break;
389                         }
390
391                 if (content_type == 21) /* Alert */
392                         {
393                         str_details1 = ", ???";
394                         
395                         if (len == 2)
396                                 {
397                                 switch (((unsigned char*)buf)[0])
398                                         {
399                                 case 1:
400                                         str_details1 = ", warning";
401                                         break;
402                                 case 2:
403                                         str_details1 = ", fatal";
404                                         break;
405                                         }
406
407                                 str_details2 = " ???";
408                                 switch (((unsigned char*)buf)[1])
409                                         {
410                                 case 0:
411                                         str_details2 = " close_notify";
412                                         break;
413                                 case 10:
414                                         str_details2 = " unexpected_message";
415                                         break;
416                                 case 20:
417                                         str_details2 = " bad_record_mac";
418                                         break;
419                                 case 21:
420                                         str_details2 = " decryption_failed";
421                                         break;
422                                 case 22:
423                                         str_details2 = " record_overflow";
424                                         break;
425                                 case 30:
426                                         str_details2 = " decompression_failure";
427                                         break;
428                                 case 40:
429                                         str_details2 = " handshake_failure";
430                                         break;
431                                 case 42:
432                                         str_details2 = " bad_certificate";
433                                         break;
434                                 case 43:
435                                         str_details2 = " unsupported_certificate";
436                                         break;
437                                 case 44:
438                                         str_details2 = " certificate_revoked";
439                                         break;
440                                 case 45:
441                                         str_details2 = " certificate_expired";
442                                         break;
443                                 case 46:
444                                         str_details2 = " certificate_unknown";
445                                         break;
446                                 case 47:
447                                         str_details2 = " illegal_parameter";
448                                         break;
449                                 case 48:
450                                         str_details2 = " unknown_ca";
451                                         break;
452                                 case 49:
453                                         str_details2 = " access_denied";
454                                         break;
455                                 case 50:
456                                         str_details2 = " decode_error";
457                                         break;
458                                 case 51:
459                                         str_details2 = " decrypt_error";
460                                         break;
461                                 case 60:
462                                         str_details2 = " export_restriction";
463                                         break;
464                                 case 70:
465                                         str_details2 = " protocol_version";
466                                         break;
467                                 case 71:
468                                         str_details2 = " insufficient_security";
469                                         break;
470                                 case 80:
471                                         str_details2 = " internal_error";
472                                         break;
473                                 case 90:
474                                         str_details2 = " user_canceled";
475                                         break;
476                                 case 100:
477                                         str_details2 = " no_renegotiation";
478                                         break;
479                                         }
480                                 }
481                         }
482                 
483                 if (content_type == 22) /* Handshake */
484                         {
485                         str_details1 = "???";
486
487                         if (len > 0)
488                                 {
489                                 switch (((unsigned char*)buf)[0])
490                                         {
491                                 case 0:
492                                         str_details1 = ", HelloRequest";
493                                         break;
494                                 case 1:
495                                         str_details1 = ", ClientHello";
496                                         break;
497                                 case 2:
498                                         str_details1 = ", ServerHello";
499                                         break;
500                                 case 11:
501                                         str_details1 = ", Certificate";
502                                         break;
503                                 case 12:
504                                         str_details1 = ", ServerKeyExchange";
505                                         break;
506                                 case 13:
507                                         str_details1 = ", CertificateRequest";
508                                         break;
509                                 case 14:
510                                         str_details1 = ", ServerHelloDone";
511                                         break;
512                                 case 15:
513                                         str_details1 = ", CertificateVerify";
514                                         break;
515                                 case 16:
516                                         str_details1 = ", ClientKeyExchange";
517                                         break;
518                                 case 20:
519                                         str_details1 = ", Finished";
520                                         break;
521                                         }
522                                 }
523                         }
524                 }
525
526         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);
527
528         if (len > 0)
529                 {
530                 size_t num, i;
531                 
532                 BIO_printf(bio, "   ");
533                 num = len;
534 #if 0
535                 if (num > 16)
536                         num = 16;
537 #endif
538                 for (i = 0; i < num; i++)
539                         {
540                         if (i % 16 == 0 && i > 0)
541                                 BIO_printf(bio, "\n   ");
542                         BIO_printf(bio, " %02x", ((unsigned char*)buf)[i]);
543                         }
544                 if (i < len)
545                         BIO_printf(bio, " ...");
546                 BIO_printf(bio, "\n");
547                 }
548         BIO_flush(bio);
549         }