Typo (PR2959).
[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_quiet=0;
129 int verify_error=X509_V_OK;
130 int verify_return_error=0;
131 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
132 int cookie_initialized=0;
133
134 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
135         {
136         X509 *err_cert;
137         int err,depth;
138
139         err_cert=X509_STORE_CTX_get_current_cert(ctx);
140         err=    X509_STORE_CTX_get_error(ctx);
141         depth=  X509_STORE_CTX_get_error_depth(ctx);
142
143         if (!verify_quiet || !ok)
144                 {
145                 BIO_printf(bio_err,"depth=%d ",depth);
146                 if (err_cert)
147                         {
148                         X509_NAME_print_ex(bio_err,
149                                         X509_get_subject_name(err_cert),
150                                         0, XN_FLAG_ONELINE);
151                         BIO_puts(bio_err, "\n");
152                         }
153                 else
154                         BIO_puts(bio_err, "<no cert>\n");
155                 }
156         if (!ok)
157                 {
158                 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
159                         X509_verify_cert_error_string(err));
160                 if (verify_depth >= depth)
161                         {
162                         if (!verify_return_error)
163                                 ok=1;
164                         verify_error=X509_V_OK;
165                         }
166                 else
167                         {
168                         ok=0;
169                         verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
170                         }
171                 }
172         switch (err)
173                 {
174         case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
175                 BIO_puts(bio_err,"issuer= ");
176                 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
177                                         0, XN_FLAG_ONELINE);
178                 BIO_puts(bio_err, "\n");
179                 break;
180         case X509_V_ERR_CERT_NOT_YET_VALID:
181         case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
182                 BIO_printf(bio_err,"notBefore=");
183                 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
184                 BIO_printf(bio_err,"\n");
185                 break;
186         case X509_V_ERR_CERT_HAS_EXPIRED:
187         case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
188                 BIO_printf(bio_err,"notAfter=");
189                 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
190                 BIO_printf(bio_err,"\n");
191                 break;
192         case X509_V_ERR_NO_EXPLICIT_POLICY:
193                 if (!verify_quiet)
194                         policies_print(bio_err, ctx);
195                 break;
196                 }
197         if (err == X509_V_OK && ok == 2 && !verify_quiet)
198                 policies_print(bio_err, ctx);
199         if (ok && !verify_quiet)
200                 BIO_printf(bio_err,"verify return:%d\n",ok);
201         return(ok);
202         }
203
204 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
205         {
206         if (cert_file != NULL)
207                 {
208                 /*
209                 SSL *ssl;
210                 X509 *x509;
211                 */
212
213                 if (SSL_CTX_use_certificate_file(ctx,cert_file,
214                         SSL_FILETYPE_PEM) <= 0)
215                         {
216                         BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
217                         ERR_print_errors(bio_err);
218                         return(0);
219                         }
220                 if (key_file == NULL) key_file=cert_file;
221                 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
222                         SSL_FILETYPE_PEM) <= 0)
223                         {
224                         BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
225                         ERR_print_errors(bio_err);
226                         return(0);
227                         }
228
229                 /*
230                 In theory this is no longer needed 
231                 ssl=SSL_new(ctx);
232                 x509=SSL_get_certificate(ssl);
233
234                 if (x509 != NULL) {
235                         EVP_PKEY *pktmp;
236                         pktmp = X509_get_pubkey(x509);
237                         EVP_PKEY_copy_parameters(pktmp,
238                                                 SSL_get_privatekey(ssl));
239                         EVP_PKEY_free(pktmp);
240                 }
241                 SSL_free(ssl);
242                 */
243
244                 /* If we are using DSA, we can copy the parameters from
245                  * the private key */
246
247
248                 /* Now we know that a key and cert have been set against
249                  * the SSL context */
250                 if (!SSL_CTX_check_private_key(ctx))
251                         {
252                         BIO_printf(bio_err,"Private key does not match the certificate public key\n");
253                         return(0);
254                         }
255                 }
256         return(1);
257         }
258
259 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
260                        STACK_OF(X509) *chain, int build_chain)
261         {
262         if (cert == NULL)
263                 return 1;
264         if (SSL_CTX_use_certificate(ctx,cert) <= 0)
265                 {
266                 BIO_printf(bio_err,"error setting certificate\n");
267                 ERR_print_errors(bio_err);
268                 return 0;
269                 }
270
271         if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
272                 {
273                 BIO_printf(bio_err,"error setting private key\n");
274                 ERR_print_errors(bio_err);
275                 return 0;
276                 }
277                  
278         /* Now we know that a key and cert have been set against
279          * the SSL context */
280         if (!SSL_CTX_check_private_key(ctx))
281                 {
282                 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
283                 return 0;
284                 }
285         if (chain && !SSL_CTX_set1_chain(ctx, chain))
286                 {
287                 BIO_printf(bio_err,"error setting certificate chain\n");
288                 ERR_print_errors(bio_err);
289                 return 0;
290                 }
291         if (!chain && build_chain && !SSL_CTX_build_cert_chain(ctx, 0))
292                 {
293                 BIO_printf(bio_err,"error building certificate chain\n");
294                 ERR_print_errors(bio_err);
295                 return 0;
296                 }
297         return 1;
298         }
299
300 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
301         {
302         const unsigned char *p;
303         int i;
304         int cert_type_num = SSL_get0_certificate_types(s, &p);
305         if (!cert_type_num)
306                 return;
307         BIO_puts(bio, "Client Certificate Types: ");
308         for (i = 0; i < cert_type_num; i++)
309                 {
310                 unsigned char cert_type = p[i];
311                 char *cname;
312                 switch(cert_type)
313                         {
314                 case TLS_CT_RSA_SIGN:
315                         cname = "RSA sign";
316                         break;
317
318                 case TLS_CT_DSS_SIGN:
319                         cname = "DSA sign";
320                         break;
321
322                 case TLS_CT_RSA_FIXED_DH:
323                         cname = "RSA fixed DH";
324                         break;
325
326                 case TLS_CT_DSS_FIXED_DH:
327                         cname = "DSS fixed DH";
328                         break;
329
330                 case TLS_CT_ECDSA_SIGN:
331                         cname = "ECDSA sign";
332                         break;
333
334                 case TLS_CT_RSA_FIXED_ECDH:
335                         cname = "RSA fixed ECDH";
336                         break;
337
338                 case TLS_CT_ECDSA_FIXED_ECDH:
339                         cname = "ECDSA fixed ECDH";
340                         break;
341
342                 case TLS_CT_GOST94_SIGN:
343                         cname = "GOST94 Sign";
344                         break;
345
346                 case TLS_CT_GOST01_SIGN:
347                         cname = "GOST01 Sign";
348                         break;
349
350                 default:
351                          cname = NULL;
352                         }
353
354                 if (i)
355                         BIO_puts(bio, ", ");
356
357                 if (cname)
358                         BIO_puts(bio, cname);
359                 else
360                         BIO_printf(bio, "UNKNOWN (%d),", cert_type);
361                 }
362         BIO_puts(bio, "\n");
363         }
364
365 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
366         {
367         int i, nsig, client;
368         client = SSL_is_server(s) ? 0 : 1;
369         if (shared)
370                 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
371                                                         NULL, NULL);
372         else
373                 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
374         if (nsig == 0)
375                 return 1;
376
377         if (shared)
378                 BIO_puts(out, "Shared ");
379
380         if (client)
381                 BIO_puts(out, "Requested ");
382         BIO_puts(out, "Signature Algorithms: ");
383         for (i = 0; i < nsig; i++)
384                 {
385                 int hash_nid, sign_nid;
386                 unsigned char rhash, rsign;
387                 const char *sstr = NULL;
388                 if (shared)
389                         SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
390                                                         &rsign, &rhash);
391                 else
392                         SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
393                                                         &rsign, &rhash);
394                 if (i)
395                         BIO_puts(out, ":");
396                 if (sign_nid == EVP_PKEY_RSA)
397                         sstr = "RSA";
398                 else if(sign_nid == EVP_PKEY_DSA)
399                         sstr = "DSA";
400                 else if(sign_nid == EVP_PKEY_EC)
401                         sstr = "ECDSA";
402                 if (sstr)
403                         BIO_printf(out,"%s+", sstr);
404                 else
405                         BIO_printf(out,"0x%02X+", (int)rsign);
406                 if (hash_nid != NID_undef)
407                         BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
408                 else
409                         BIO_printf(out,"0x%02X", (int)rhash);
410                 }
411         BIO_puts(out, "\n");
412         return 1;
413         }
414
415 int ssl_print_sigalgs(BIO *out, SSL *s)
416         {
417         int mdnid;
418         if (!SSL_is_server(s))
419                 ssl_print_client_cert_types(out, s);
420         do_print_sigalgs(out, s, 0);
421         do_print_sigalgs(out, s, 1);
422         if (SSL_get_peer_signature_nid(s, &mdnid))
423                 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
424         return 1;
425         }
426
427 int ssl_print_point_formats(BIO *out, SSL *s)
428         {
429         int i, nformats;
430         const char *pformats;
431         nformats = SSL_get0_ec_point_formats(s, &pformats);
432         if (nformats <= 0)
433                 return 1;
434         BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
435         for (i = 0; i < nformats; i++, pformats++)
436                 {
437                 if (i)
438                         BIO_puts(out, ":");
439                 switch(*pformats)
440                         {
441                 case TLSEXT_ECPOINTFORMAT_uncompressed:
442                         BIO_puts(out, "uncompressed");
443                         break;
444
445                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
446                         BIO_puts(out, "ansiX962_compressed_prime");
447                         break;
448
449                 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
450                         BIO_puts(out, "ansiX962_compressed_char2");
451                         break;
452
453                 default:
454                         BIO_printf(out, "unknown(%d)", (int)*pformats);
455                         break;
456
457                         }
458                 }
459         if (nformats <= 0)
460                 BIO_puts(out, "NONE");
461         BIO_puts(out, "\n");
462         return 1;
463         }
464
465 int ssl_print_curves(BIO *out, SSL *s, int noshared)
466         {
467         int i, ncurves, *curves, nid;
468         const char *cname;
469         ncurves = SSL_get1_curves(s, NULL);
470         if (ncurves <= 0)
471                 return 1;
472         curves = OPENSSL_malloc(ncurves * sizeof(int));
473         SSL_get1_curves(s, curves);
474
475         BIO_puts(out, "Supported Elliptic Curves: ");
476         for (i = 0; i < ncurves; i++)
477                 {
478                 if (i)
479                         BIO_puts(out, ":");
480                 nid = curves[i];
481                 /* If unrecognised print out hex version */
482                 if (nid & TLSEXT_nid_unknown)
483                         BIO_printf(out, "0x%04X", nid & 0xFFFF);
484                 else
485                         {
486                         /* Use NIST name for curve if it exists */
487                         cname = EC_curve_nid2nist(nid);
488                         if (!cname)
489                                 cname = OBJ_nid2sn(nid);
490                         BIO_printf(out, "%s", cname);
491                         }
492                 }
493         if (ncurves == 0)
494                 BIO_puts(out, "NONE");
495         OPENSSL_free(curves);
496         if (noshared)
497                 {
498                 BIO_puts(out, "\n");
499                 return 1;
500                 }
501         BIO_puts(out, "\nShared Elliptic curves: ");
502         ncurves = SSL_get_shared_curve(s, -1);
503         for (i = 0; i < ncurves; i++)
504                 {
505                 if (i)
506                         BIO_puts(out, ":");
507                 nid = SSL_get_shared_curve(s, i);
508                 cname = EC_curve_nid2nist(nid);
509                 if (!cname)
510                         cname = OBJ_nid2sn(nid);
511                 BIO_printf(out, "%s", cname);
512                 }
513         if (ncurves == 0)
514                 BIO_puts(out, "NONE");
515         BIO_puts(out, "\n");
516         return 1;
517         }
518
519 int ssl_print_tmp_key(BIO *out, SSL *s)
520         {
521         EVP_PKEY *key;
522         if (!SSL_get_server_tmp_key(s, &key))
523                 return 1;
524         BIO_puts(out, "Server Temp Key: ");
525         switch (EVP_PKEY_id(key))
526                 {
527         case EVP_PKEY_RSA:
528                 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
529                 break;
530
531         case EVP_PKEY_DH:
532                 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
533                 break;
534
535         case EVP_PKEY_EC:
536                         {
537                         EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
538                         int nid;
539                         const char *cname;
540                         nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
541                         EC_KEY_free(ec);
542                         cname = EC_curve_nid2nist(nid);
543                         if (!cname)
544                                 cname = OBJ_nid2sn(nid);
545                         BIO_printf(out, "ECDH, %s, %d bits\n",
546                                                 cname, EVP_PKEY_bits(key));
547                         }
548                 }
549         EVP_PKEY_free(key);
550         return 1;
551         }
552                 
553
554 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
555                                    int argi, long argl, long ret)
556         {
557         BIO *out;
558
559         out=(BIO *)BIO_get_callback_arg(bio);
560         if (out == NULL) return(ret);
561
562         if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
563                 {
564                 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
565                         (void *)bio,argp,(unsigned long)argi,ret,ret);
566                 BIO_dump(out,argp,(int)ret);
567                 return(ret);
568                 }
569         else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
570                 {
571                 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
572                         (void *)bio,argp,(unsigned long)argi,ret,ret);
573                 BIO_dump(out,argp,(int)ret);
574                 }
575         return(ret);
576         }
577
578 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
579         {
580         const char *str;
581         int w;
582
583         w=where& ~SSL_ST_MASK;
584
585         if (w & SSL_ST_CONNECT) str="SSL_connect";
586         else if (w & SSL_ST_ACCEPT) str="SSL_accept";
587         else str="undefined";
588
589         if (where & SSL_CB_LOOP)
590                 {
591                 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
592                 }
593         else if (where & SSL_CB_ALERT)
594                 {
595                 str=(where & SSL_CB_READ)?"read":"write";
596                 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
597                         str,
598                         SSL_alert_type_string_long(ret),
599                         SSL_alert_desc_string_long(ret));
600                 }
601         else if (where & SSL_CB_EXIT)
602                 {
603                 if (ret == 0)
604                         BIO_printf(bio_err,"%s:failed in %s\n",
605                                 str,SSL_state_string_long(s));
606                 else if (ret < 0)
607                         {
608                         BIO_printf(bio_err,"%s:error in %s\n",
609                                 str,SSL_state_string_long(s));
610                         }
611                 }
612         }
613
614
615 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
616         {
617         BIO *bio = arg;
618         const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
619         
620         str_write_p = write_p ? ">>>" : "<<<";
621
622         switch (version)
623                 {
624         case SSL2_VERSION:
625                 str_version = "SSL 2.0";
626                 break;
627         case SSL3_VERSION:
628                 str_version = "SSL 3.0 ";
629                 break;
630         case TLS1_VERSION:
631                 str_version = "TLS 1.0 ";
632                 break;
633         case TLS1_1_VERSION:
634                 str_version = "TLS 1.1 ";
635                 break;
636         case TLS1_2_VERSION:
637                 str_version = "TLS 1.2 ";
638                 break;
639         case DTLS1_VERSION:
640                 str_version = "DTLS 1.0 ";
641                 break;
642         case DTLS1_BAD_VER:
643                 str_version = "DTLS 1.0 (bad) ";
644                 break;
645         default:
646                 str_version = "???";
647                 }
648
649         if (version == SSL2_VERSION)
650                 {
651                 str_details1 = "???";
652
653                 if (len > 0)
654                         {
655                         switch (((const unsigned char*)buf)[0])
656                                 {
657                                 case 0:
658                                         str_details1 = ", ERROR:";
659                                         str_details2 = " ???";
660                                         if (len >= 3)
661                                                 {
662                                                 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
663                                                 
664                                                 switch (err)
665                                                         {
666                                                 case 0x0001:
667                                                         str_details2 = " NO-CIPHER-ERROR";
668                                                         break;
669                                                 case 0x0002:
670                                                         str_details2 = " NO-CERTIFICATE-ERROR";
671                                                         break;
672                                                 case 0x0004:
673                                                         str_details2 = " BAD-CERTIFICATE-ERROR";
674                                                         break;
675                                                 case 0x0006:
676                                                         str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
677                                                         break;
678                                                         }
679                                                 }
680
681                                         break;
682                                 case 1:
683                                         str_details1 = ", CLIENT-HELLO";
684                                         break;
685                                 case 2:
686                                         str_details1 = ", CLIENT-MASTER-KEY";
687                                         break;
688                                 case 3:
689                                         str_details1 = ", CLIENT-FINISHED";
690                                         break;
691                                 case 4:
692                                         str_details1 = ", SERVER-HELLO";
693                                         break;
694                                 case 5:
695                                         str_details1 = ", SERVER-VERIFY";
696                                         break;
697                                 case 6:
698                                         str_details1 = ", SERVER-FINISHED";
699                                         break;
700                                 case 7:
701                                         str_details1 = ", REQUEST-CERTIFICATE";
702                                         break;
703                                 case 8:
704                                         str_details1 = ", CLIENT-CERTIFICATE";
705                                         break;
706                                 }
707                         }
708                 }
709
710         if (version == SSL3_VERSION ||
711             version == TLS1_VERSION ||
712             version == TLS1_1_VERSION ||
713             version == TLS1_2_VERSION ||
714             version == DTLS1_VERSION ||
715             version == DTLS1_BAD_VER)
716                 {
717                 switch (content_type)
718                         {
719                 case 20:
720                         str_content_type = "ChangeCipherSpec";
721                         break;
722                 case 21:
723                         str_content_type = "Alert";
724                         break;
725                 case 22:
726                         str_content_type = "Handshake";
727                         break;
728                         }
729
730                 if (content_type == 21) /* Alert */
731                         {
732                         str_details1 = ", ???";
733                         
734                         if (len == 2)
735                                 {
736                                 switch (((const unsigned char*)buf)[0])
737                                         {
738                                 case 1:
739                                         str_details1 = ", warning";
740                                         break;
741                                 case 2:
742                                         str_details1 = ", fatal";
743                                         break;
744                                         }
745
746                                 str_details2 = " ???";
747                                 switch (((const unsigned char*)buf)[1])
748                                         {
749                                 case 0:
750                                         str_details2 = " close_notify";
751                                         break;
752                                 case 10:
753                                         str_details2 = " unexpected_message";
754                                         break;
755                                 case 20:
756                                         str_details2 = " bad_record_mac";
757                                         break;
758                                 case 21:
759                                         str_details2 = " decryption_failed";
760                                         break;
761                                 case 22:
762                                         str_details2 = " record_overflow";
763                                         break;
764                                 case 30:
765                                         str_details2 = " decompression_failure";
766                                         break;
767                                 case 40:
768                                         str_details2 = " handshake_failure";
769                                         break;
770                                 case 42:
771                                         str_details2 = " bad_certificate";
772                                         break;
773                                 case 43:
774                                         str_details2 = " unsupported_certificate";
775                                         break;
776                                 case 44:
777                                         str_details2 = " certificate_revoked";
778                                         break;
779                                 case 45:
780                                         str_details2 = " certificate_expired";
781                                         break;
782                                 case 46:
783                                         str_details2 = " certificate_unknown";
784                                         break;
785                                 case 47:
786                                         str_details2 = " illegal_parameter";
787                                         break;
788                                 case 48:
789                                         str_details2 = " unknown_ca";
790                                         break;
791                                 case 49:
792                                         str_details2 = " access_denied";
793                                         break;
794                                 case 50:
795                                         str_details2 = " decode_error";
796                                         break;
797                                 case 51:
798                                         str_details2 = " decrypt_error";
799                                         break;
800                                 case 60:
801                                         str_details2 = " export_restriction";
802                                         break;
803                                 case 70:
804                                         str_details2 = " protocol_version";
805                                         break;
806                                 case 71:
807                                         str_details2 = " insufficient_security";
808                                         break;
809                                 case 80:
810                                         str_details2 = " internal_error";
811                                         break;
812                                 case 90:
813                                         str_details2 = " user_canceled";
814                                         break;
815                                 case 100:
816                                         str_details2 = " no_renegotiation";
817                                         break;
818                                 case 110:
819                                         str_details2 = " unsupported_extension";
820                                         break;
821                                 case 111:
822                                         str_details2 = " certificate_unobtainable";
823                                         break;
824                                 case 112:
825                                         str_details2 = " unrecognized_name";
826                                         break;
827                                 case 113:
828                                         str_details2 = " bad_certificate_status_response";
829                                         break;
830                                 case 114:
831                                         str_details2 = " bad_certificate_hash_value";
832                                         break;
833                                 case 115:
834                                         str_details2 = " unknown_psk_identity";
835                                         break;
836                                         }
837                                 }
838                         }
839                 
840                 if (content_type == 22) /* Handshake */
841                         {
842                         str_details1 = "???";
843
844                         if (len > 0)
845                                 {
846                                 switch (((const unsigned char*)buf)[0])
847                                         {
848                                 case 0:
849                                         str_details1 = ", HelloRequest";
850                                         break;
851                                 case 1:
852                                         str_details1 = ", ClientHello";
853                                         break;
854                                 case 2:
855                                         str_details1 = ", ServerHello";
856                                         break;
857                                 case 3:
858                                         str_details1 = ", HelloVerifyRequest";
859                                         break;
860                                 case 11:
861                                         str_details1 = ", Certificate";
862                                         break;
863                                 case 12:
864                                         str_details1 = ", ServerKeyExchange";
865                                         break;
866                                 case 13:
867                                         str_details1 = ", CertificateRequest";
868                                         break;
869                                 case 14:
870                                         str_details1 = ", ServerHelloDone";
871                                         break;
872                                 case 15:
873                                         str_details1 = ", CertificateVerify";
874                                         break;
875                                 case 16:
876                                         str_details1 = ", ClientKeyExchange";
877                                         break;
878                                 case 20:
879                                         str_details1 = ", Finished";
880                                         break;
881                                         }
882                                 }
883                         }
884
885 #ifndef OPENSSL_NO_HEARTBEATS
886                 if (content_type == 24) /* Heartbeat */
887                         {
888                         str_details1 = ", Heartbeat";
889                         
890                         if (len > 0)
891                                 {
892                                 switch (((const unsigned char*)buf)[0])
893                                         {
894                                 case 1:
895                                         str_details1 = ", HeartbeatRequest";
896                                         break;
897                                 case 2:
898                                         str_details1 = ", HeartbeatResponse";
899                                         break;
900                                         }
901                                 }
902                         }
903 #endif
904                 }
905
906         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);
907
908         if (len > 0)
909                 {
910                 size_t num, i;
911                 
912                 BIO_printf(bio, "   ");
913                 num = len;
914 #if 0
915                 if (num > 16)
916                         num = 16;
917 #endif
918                 for (i = 0; i < num; i++)
919                         {
920                         if (i % 16 == 0 && i > 0)
921                                 BIO_printf(bio, "\n   ");
922                         BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
923                         }
924                 if (i < len)
925                         BIO_printf(bio, " ...");
926                 BIO_printf(bio, "\n");
927                 }
928         (void)BIO_flush(bio);
929         }
930
931 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
932                                         unsigned char *data, int len,
933                                         void *arg)
934         {
935         BIO *bio = arg;
936         char *extname;
937
938         switch(type)
939                 {
940                 case TLSEXT_TYPE_server_name:
941                 extname = "server name";
942                 break;
943
944                 case TLSEXT_TYPE_max_fragment_length:
945                 extname = "max fragment length";
946                 break;
947
948                 case TLSEXT_TYPE_client_certificate_url:
949                 extname = "client certificate URL";
950                 break;
951
952                 case TLSEXT_TYPE_trusted_ca_keys:
953                 extname = "trusted CA keys";
954                 break;
955
956                 case TLSEXT_TYPE_truncated_hmac:
957                 extname = "truncated HMAC";
958                 break;
959
960                 case TLSEXT_TYPE_status_request:
961                 extname = "status request";
962                 break;
963
964                 case TLSEXT_TYPE_user_mapping:
965                 extname = "user mapping";
966                 break;
967
968                 case TLSEXT_TYPE_client_authz:
969                 extname = "client authz";
970                 break;
971
972                 case TLSEXT_TYPE_server_authz:
973                 extname = "server authz";
974                 break;
975
976                 case TLSEXT_TYPE_cert_type:
977                 extname = "cert type";
978                 break;
979
980                 case TLSEXT_TYPE_elliptic_curves:
981                 extname = "elliptic curves";
982                 break;
983
984                 case TLSEXT_TYPE_ec_point_formats:
985                 extname = "EC point formats";
986                 break;
987
988                 case TLSEXT_TYPE_srp:
989                 extname = "SRP";
990                 break;
991
992                 case TLSEXT_TYPE_signature_algorithms:
993                 extname = "signature algorithms";
994                 break;
995
996                 case TLSEXT_TYPE_use_srtp:
997                 extname = "use SRTP";
998                 break;
999
1000                 case TLSEXT_TYPE_heartbeat:
1001                 extname = "heartbeat";
1002                 break;
1003
1004                 case TLSEXT_TYPE_session_ticket:
1005                 extname = "session ticket";
1006                 break;
1007
1008                 case TLSEXT_TYPE_renegotiate: 
1009                 extname = "renegotiation info";
1010                 break;
1011
1012 #ifdef TLSEXT_TYPE_opaque_prf_input
1013                 case TLSEXT_TYPE_opaque_prf_input:
1014                 extname = "opaque PRF input";
1015                 break;
1016 #endif
1017 #ifdef TLSEXT_TYPE_next_proto_neg
1018                 case TLSEXT_TYPE_next_proto_neg:
1019                 extname = "next protocol";
1020                 break;
1021 #endif
1022
1023                 default:
1024                 extname = "unknown";
1025                 break;
1026
1027                 }
1028         
1029         BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
1030                         client_server ? "server": "client",
1031                         extname, type, len);
1032         BIO_dump(bio, (char *)data, len);
1033         (void)BIO_flush(bio);
1034         }
1035
1036 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
1037         {
1038         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1039         unsigned int length, resultlength;
1040         union {
1041                 struct sockaddr sa;
1042                 struct sockaddr_in s4;
1043 #if OPENSSL_USE_IPV6
1044                 struct sockaddr_in6 s6;
1045 #endif
1046         } peer;
1047
1048         /* Initialize a random secret */
1049         if (!cookie_initialized)
1050                 {
1051                 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
1052                         {
1053                         BIO_printf(bio_err,"error setting random cookie secret\n");
1054                         return 0;
1055                         }
1056                 cookie_initialized = 1;
1057                 }
1058
1059         /* Read peer information */
1060         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1061
1062         /* Create buffer with peer's address and port */
1063         length = 0;
1064         switch (peer.sa.sa_family)
1065                 {
1066         case AF_INET:
1067                 length += sizeof(struct in_addr);
1068                 length += sizeof(peer.s4.sin_port);
1069                 break;
1070 #if OPENSSL_USE_IPV6
1071         case AF_INET6:
1072                 length += sizeof(struct in6_addr);
1073                 length += sizeof(peer.s6.sin6_port);
1074                 break;
1075 #endif
1076         default:
1077                 OPENSSL_assert(0);
1078                 break;
1079                 }
1080         buffer = OPENSSL_malloc(length);
1081
1082         if (buffer == NULL)
1083                 {
1084                 BIO_printf(bio_err,"out of memory\n");
1085                 return 0;
1086                 }
1087
1088         switch (peer.sa.sa_family)
1089                 {
1090         case AF_INET:
1091                 memcpy(buffer,
1092                        &peer.s4.sin_port,
1093                        sizeof(peer.s4.sin_port));
1094                 memcpy(buffer + sizeof(peer.s4.sin_port),
1095                        &peer.s4.sin_addr,
1096                        sizeof(struct in_addr));
1097                 break;
1098 #if OPENSSL_USE_IPV6
1099         case AF_INET6:
1100                 memcpy(buffer,
1101                        &peer.s6.sin6_port,
1102                        sizeof(peer.s6.sin6_port));
1103                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1104                        &peer.s6.sin6_addr,
1105                        sizeof(struct in6_addr));
1106                 break;
1107 #endif
1108         default:
1109                 OPENSSL_assert(0);
1110                 break;
1111                 }
1112
1113         /* Calculate HMAC of buffer using the secret */
1114         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1115              buffer, length, result, &resultlength);
1116         OPENSSL_free(buffer);
1117
1118         memcpy(cookie, result, resultlength);
1119         *cookie_len = resultlength;
1120
1121         return 1;
1122         }
1123
1124 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1125         {
1126         unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1127         unsigned int length, resultlength;
1128         union {
1129                 struct sockaddr sa;
1130                 struct sockaddr_in s4;
1131 #if OPENSSL_USE_IPV6
1132                 struct sockaddr_in6 s6;
1133 #endif
1134         } peer;
1135
1136         /* If secret isn't initialized yet, the cookie can't be valid */
1137         if (!cookie_initialized)
1138                 return 0;
1139
1140         /* Read peer information */
1141         (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1142
1143         /* Create buffer with peer's address and port */
1144         length = 0;
1145         switch (peer.sa.sa_family)
1146                 {
1147         case AF_INET:
1148                 length += sizeof(struct in_addr);
1149                 length += sizeof(peer.s4.sin_port);
1150                 break;
1151 #if OPENSSL_USE_IPV6
1152         case AF_INET6:
1153                 length += sizeof(struct in6_addr);
1154                 length += sizeof(peer.s6.sin6_port);
1155                 break;
1156 #endif
1157         default:
1158                 OPENSSL_assert(0);
1159                 break;
1160                 }
1161         buffer = OPENSSL_malloc(length);
1162         
1163         if (buffer == NULL)
1164                 {
1165                 BIO_printf(bio_err,"out of memory\n");
1166                 return 0;
1167                 }
1168
1169         switch (peer.sa.sa_family)
1170                 {
1171         case AF_INET:
1172                 memcpy(buffer,
1173                        &peer.s4.sin_port,
1174                        sizeof(peer.s4.sin_port));
1175                 memcpy(buffer + sizeof(peer.s4.sin_port),
1176                        &peer.s4.sin_addr,
1177                        sizeof(struct in_addr));
1178                 break;
1179 #if OPENSSL_USE_IPV6
1180         case AF_INET6:
1181                 memcpy(buffer,
1182                        &peer.s6.sin6_port,
1183                        sizeof(peer.s6.sin6_port));
1184                 memcpy(buffer + sizeof(peer.s6.sin6_port),
1185                        &peer.s6.sin6_addr,
1186                        sizeof(struct in6_addr));
1187                 break;
1188 #endif
1189         default:
1190                 OPENSSL_assert(0);
1191                 break;
1192                 }
1193
1194         /* Calculate HMAC of buffer using the secret */
1195         HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1196              buffer, length, result, &resultlength);
1197         OPENSSL_free(buffer);
1198
1199         if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1200                 return 1;
1201
1202         return 0;
1203         }
1204
1205 /* Example of extended certificate handling. Where the standard support
1206  * of one certificate per algorithm is not sufficient an application
1207  * can decide which certificate(s) to use at runtime based on whatever
1208  * criteria it deems appropriate.
1209  */
1210
1211 /* Linked list of certificates, keys and chains */
1212 struct  ssl_excert_st
1213         {
1214         int certform;
1215         const char *certfile;
1216         int keyform;
1217         const char *keyfile;
1218         const char *chainfile;
1219         X509 *cert;
1220         EVP_PKEY *key;
1221         STACK_OF(X509) *chain;
1222         int build_chain;
1223         struct ssl_excert_st *next, *prev;
1224         };
1225
1226 struct chain_flags
1227         {
1228         int flag;
1229         const char *name;
1230         };
1231
1232 struct chain_flags chain_flags_list[] =
1233         {
1234                 {CERT_PKEY_VALID, "Overall Validity"},
1235                 {CERT_PKEY_SIGN,  "Sign with EE key"},
1236                 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1237                 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1238                 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1239                 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1240                 {CERT_PKEY_EXPLICIT_SIGN,  "Explicity sign with EE key"},
1241                 {CERT_PKEY_ISSUER_NAME,  "Issuer Name"},
1242                 {CERT_PKEY_CERT_TYPE,  "Certificate Type"},
1243                 {0, NULL}
1244         };
1245
1246
1247 static void print_chain_flags(BIO *out, int flags)
1248         {
1249         struct chain_flags *ctmp = chain_flags_list;
1250         while(ctmp->name)
1251                 {
1252                 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1253                                 flags & ctmp->flag ? "OK" : "NOT OK");
1254                 ctmp++;
1255                 }
1256         }
1257
1258 /* Very basic selection callback: just use any certificate chain
1259  * reported as valid. More sophisticated could prioritise according
1260  * to local policy.
1261  */
1262 static int set_cert_cb(SSL *ssl, void *arg)
1263         {
1264         int i, rv;
1265         SSL_EXCERT *exc = arg;
1266         SSL_certs_clear(ssl);
1267
1268         if (!exc)
1269                 return 1;
1270
1271         /* Go to end of list and traverse backwards since we prepend
1272          * newer entries this retains the original order.
1273          */
1274         while (exc->next)
1275                 exc = exc->next;
1276
1277         i = 0;  
1278
1279         while(exc)
1280                 {
1281                 i++;
1282                 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1283                 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1284                 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1285                                                         XN_FLAG_ONELINE);
1286                 BIO_puts(bio_err, "\n");
1287                 
1288                 print_chain_flags(bio_err, rv);
1289                 if (rv & CERT_PKEY_VALID)
1290                         {
1291                         SSL_use_certificate(ssl, exc->cert);
1292                         SSL_use_PrivateKey(ssl, exc->key);
1293                         /* NB: we wouldn't normally do this as it is
1294                          * not efficient building chains on each connection
1295                          * better to cache the chain in advance.
1296                          */
1297                         if (exc->build_chain)
1298                                 {
1299                                 if (!SSL_build_cert_chain(ssl, 0))
1300                                         return 0;
1301                                 }
1302                         else if (exc->chain)
1303                                 SSL_set1_chain(ssl, exc->chain);
1304                         }
1305                 exc = exc->prev;
1306                 }
1307         return 1;
1308         }
1309
1310 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1311         {
1312         SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1313         }
1314
1315 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1316         {
1317         SSL_EXCERT *exc;
1318         exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1319         if (!exc)
1320                 return 0;
1321         exc->certfile = NULL;
1322         exc->keyfile = NULL;
1323         exc->chainfile = NULL;
1324         exc->cert = NULL;
1325         exc->key = NULL;
1326         exc->chain = NULL;
1327         exc->prev = NULL;
1328         exc->build_chain = 0;
1329
1330         exc->next = *pexc;
1331         *pexc = exc;
1332                         
1333         if (exc->next)
1334                 {
1335                 exc->certform = exc->next->certform;
1336                 exc->keyform = exc->next->keyform;
1337                 exc->next->prev = exc;
1338                 }
1339         else
1340                 {
1341                 exc->certform = FORMAT_PEM;
1342                 exc->keyform = FORMAT_PEM;
1343                 }
1344         return 1;
1345
1346         }
1347
1348 void ssl_excert_free(SSL_EXCERT *exc)
1349         {
1350         SSL_EXCERT *curr;
1351         while (exc)
1352                 {
1353                 if (exc->cert)
1354                         X509_free(exc->cert);
1355                 if (exc->key)
1356                         EVP_PKEY_free(exc->key);
1357                 if (exc->chain)
1358                         sk_X509_pop_free(exc->chain, X509_free);
1359                 curr = exc;
1360                 exc = exc->next;
1361                 OPENSSL_free(curr);
1362                 }
1363         }
1364
1365 int load_excert(SSL_EXCERT **pexc, BIO *err)
1366         {
1367         SSL_EXCERT *exc = *pexc;
1368         if (!exc)
1369                 return 1;
1370         /* If nothing in list, free and set to NULL */
1371         if (!exc->certfile && !exc->next)
1372                 {
1373                 ssl_excert_free(exc);
1374                 *pexc = NULL;
1375                 return 1;
1376                 }
1377         for(; exc; exc=exc->next)
1378                 {
1379                 if (!exc->certfile)
1380                         {
1381                         BIO_printf(err, "Missing filename\n");
1382                         return 0;
1383                         }
1384                 exc->cert = load_cert(err, exc->certfile, exc->certform,
1385                                         NULL, NULL, "Server Certificate");
1386                 if (!exc->cert)
1387                         return 0;
1388                 if (exc->keyfile)
1389                         exc->keyfile = exc->certfile;
1390                 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1391                                         NULL, NULL, "Server Certificate");
1392                 if (!exc->key)
1393                         return 0;
1394                 if (exc->chainfile)
1395                         {
1396                         exc->chain = load_certs(err,
1397                                                 exc->chainfile, FORMAT_PEM,
1398                                                 NULL, NULL,
1399                                                 "Server Chain");
1400                         if (!exc->chainfile)
1401                                 return 0;
1402                         }
1403                 }
1404         return 1;
1405         }
1406                 
1407
1408 int args_excert(char ***pargs, int *pargc,
1409                         int *badarg, BIO *err, SSL_EXCERT **pexc)
1410         {
1411         char *arg = **pargs, *argn = (*pargs)[1];
1412         SSL_EXCERT *exc = *pexc;
1413         int narg = 2;
1414         if (!exc)
1415                 {
1416                 if (ssl_excert_prepend(&exc))
1417                         *pexc = exc;
1418                 else
1419                         {
1420                         BIO_printf(err, "Error initialising xcert\n");
1421                         *badarg = 1;
1422                         goto err;
1423                         }
1424                 }
1425         if (strcmp(arg, "-xcert") == 0)
1426                 {
1427                 if (!argn)
1428                         {
1429                         *badarg = 1;
1430                         return 1;
1431                         }
1432                 if (exc->certfile && !ssl_excert_prepend(&exc))
1433                         {
1434                         BIO_printf(err, "Error adding xcert\n");
1435                         *badarg = 1;
1436                         goto err;
1437                         }
1438                 exc->certfile = argn;
1439                 }
1440         else if (strcmp(arg,"-xkey") == 0)
1441                 {
1442                 if (!argn)
1443                         {
1444                         *badarg = 1;
1445                         return 1;
1446                         }
1447                 if (exc->keyfile)
1448                         {
1449                         BIO_printf(err, "Key already specified\n");
1450                         *badarg = 1;
1451                         return 1;
1452                         }
1453                 exc->keyfile = argn;
1454                 }
1455         else if (strcmp(arg,"-xchain") == 0)
1456                 {
1457                 if (!argn)
1458                         {
1459                         *badarg = 1;
1460                         return 1;
1461                         }
1462                 if (exc->chainfile)
1463                         {
1464                         BIO_printf(err, "Chain already specified\n");
1465                         *badarg = 1;
1466                         return 1;
1467                         }
1468                 exc->chainfile = argn;
1469                 }
1470         else if (strcmp(arg,"-xchain_build") == 0)
1471                 {
1472                 narg = 1;
1473                 exc->build_chain = 1;
1474                 }
1475         else if (strcmp(arg,"-xcertform") == 0)
1476                 {
1477                 if (!argn)
1478                         {
1479                         *badarg = 1;
1480                         goto err;
1481                         }
1482                 exc->certform = str2fmt(argn);
1483                 }
1484         else if (strcmp(arg,"-xkeyform") == 0)
1485                 {
1486                 if (!argn)
1487                         {
1488                         *badarg = 1;
1489                         goto err;
1490                         }
1491                 exc->keyform = str2fmt(argn);
1492                 }
1493         else
1494                 return 0;
1495
1496         (*pargs) += narg;
1497
1498         if (pargc)
1499                 *pargc -= narg;
1500
1501         *pexc = exc;
1502
1503         return 1;
1504
1505         err:
1506         ERR_print_errors(err);
1507         ssl_excert_free(exc);
1508         *pexc = NULL;
1509         return 1;
1510         }
1511
1512 static void print_raw_cipherlist(BIO *bio, SSL *s)
1513         {
1514         const unsigned char *rlist;
1515         static const unsigned char scsv_id[] = {0, 0, 0xFF};
1516         size_t i, rlistlen, num;
1517         if (!SSL_is_server(s))
1518                 return;
1519         num = SSL_get0_raw_cipherlist(s, NULL);
1520         rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1521         BIO_puts(bio, "Client cipher list: ");
1522         for (i = 0; i < rlistlen; i += num, rlist += num)
1523                 {
1524                 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1525                 if (i)
1526                         BIO_puts(bio, ":");
1527                 if (c)
1528                         BIO_puts(bio, SSL_CIPHER_get_name(c));
1529                 else if (!memcmp(rlist, scsv_id - num + 3, num))
1530                         BIO_puts(bio, "SCSV");
1531                 else
1532                         {
1533                         size_t j;
1534                         BIO_puts(bio, "0x");
1535                         for (j = 0; j < num; j++)
1536                                 BIO_printf(bio, "%02X", rlist[j]);
1537                         }
1538                 }
1539         BIO_puts(bio, "\n");
1540         }
1541         
1542
1543 void print_ssl_summary(BIO *bio, SSL *s)
1544         {
1545         const SSL_CIPHER *c;
1546         X509 *peer;
1547         /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
1548         BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1549         print_raw_cipherlist(bio, s);
1550         c = SSL_get_current_cipher(s);
1551         BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1552         do_print_sigalgs(bio, s, 0);
1553         peer = SSL_get_peer_certificate(s);
1554         if (peer)
1555                 {
1556                 int nid;
1557                 BIO_puts(bio, "Peer certificate: ");
1558                 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1559                                         0, XN_FLAG_ONELINE);
1560                 BIO_puts(bio, "\n");
1561                 if (SSL_get_peer_signature_nid(s, &nid))
1562                         BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1563                 }
1564         else
1565                 BIO_puts(bio, "No peer certificate\n");
1566         if (peer)
1567                 X509_free(peer);
1568         ssl_print_point_formats(bio, s);
1569         if (SSL_is_server(s))
1570                 ssl_print_curves(bio, s, 1);
1571         else
1572                 ssl_print_tmp_key(bio, s);
1573         }
1574
1575 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1576                         int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1577         {
1578         char *arg = **pargs, *argn = (*pargs)[1];
1579         int rv;
1580
1581         /* Attempt to run SSL configuration command */
1582         rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1583         /* If parameter not recognised just return */
1584         if (rv == 0)
1585                 return 0;
1586         /* see if missing argument error */
1587         if (rv == -3)
1588                 {
1589                 BIO_printf(err, "%s needs an argument\n", arg);
1590                 *badarg = 1;
1591                 goto end;
1592                 }
1593         /* Check for some other error */
1594         if (rv < 0)
1595                 {
1596                 BIO_printf(err, "Error with command: \"%s %s\"\n",
1597                                                 arg, argn ? argn : "");
1598                 *badarg = 1;
1599                 goto end;
1600                 }
1601         /* Store command and argument */
1602         /* If only one argument processed store value as NULL */
1603         if (rv == 1)
1604                 argn = NULL;
1605         if (!*pstr)
1606                 *pstr = sk_OPENSSL_STRING_new_null();
1607         if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1608                                 !sk_OPENSSL_STRING_push(*pstr, argn))
1609                 {
1610                 BIO_puts(err, "Memory allocation failure\n");
1611                 goto end;
1612                 }
1613
1614         end:
1615         if (*badarg)
1616                 ERR_print_errors(err);
1617
1618         return 1;
1619         }
1620
1621 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1622                 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1623         {
1624         int i;
1625         SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1626         for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
1627                 {
1628                 const char *param = sk_OPENSSL_STRING_value(str, i);
1629                 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1630                 /* If no_ecdhe or named curve already specified don't need
1631                  * a default.
1632                  */
1633                 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1634                         no_ecdhe = 1;
1635 #ifndef OPENSSL_NO_JPAKE
1636                 if (!no_jpake && !strcmp(param, "-cipher"))
1637                         {
1638                         BIO_puts(err, "JPAKE sets cipher to PSK\n");
1639                         return 0;
1640                         }
1641 #endif
1642                 if (SSL_CONF_cmd(cctx, param, value) <= 0)
1643                         {
1644                         BIO_printf(err, "Error with command: \"%s %s\"\n",
1645                                                 param, value ? value : "");
1646                         ERR_print_errors(err);
1647                         return 0;
1648                         }
1649                 }
1650         /* This is a special case to keep existing s_server functionality:
1651          * if we don't have any curve specified *and* we haven't disabled
1652          * ECDHE then use P-256.
1653          */
1654         if (!no_ecdhe)
1655                 {
1656                 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
1657                         {
1658                         BIO_puts(err, "Error setting EC curve\n");
1659                         ERR_print_errors(err);
1660                         return 0;
1661                         }
1662                 }
1663 #ifndef OPENSSL_NO_JPAKE
1664         if (!no_jpake)
1665                 {
1666                 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
1667                         {
1668                         BIO_puts(err, "Error setting cipher to PSK\n");
1669                         ERR_print_errors(err);
1670                         return 0;
1671                         }
1672                 }
1673 #endif
1674         return 1;
1675         }
1676
1677 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1678         {
1679         X509_CRL *crl;
1680         int i;
1681         for (i = 0; i < sk_X509_CRL_num(crls); i++)
1682                 {
1683                 crl = sk_X509_CRL_value(crls, i);
1684                 X509_STORE_add_crl(st, crl);
1685                 }
1686         return 1;
1687         }
1688
1689 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1690         {
1691         X509_STORE *st;
1692         st = SSL_CTX_get_cert_store(ctx);
1693         add_crls_store(st, crls);
1694         if (crl_download)
1695                 store_setup_crl_download(st);
1696         return 1;
1697         }
1698
1699 int ssl_load_stores(SSL_CTX *ctx,
1700                         const char *vfyCApath, const char *vfyCAfile,
1701                         const char *chCApath, const char *chCAfile,
1702                         STACK_OF(X509_CRL) *crls, int crl_download)
1703         {
1704         X509_STORE *vfy = NULL, *ch = NULL;
1705         int rv = 0;
1706         if (vfyCApath || vfyCAfile)
1707                 {
1708                 vfy = X509_STORE_new();
1709                 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1710                         goto err;
1711                 add_crls_store(vfy, crls);
1712                 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1713                 if (crl_download)
1714                         store_setup_crl_download(vfy);
1715                 }
1716         if (chCApath || chCAfile)
1717                 {
1718                 ch = X509_STORE_new();
1719                 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1720                         goto err;
1721                 SSL_CTX_set1_chain_cert_store(ctx, ch);
1722                 }
1723         rv = 1;
1724         err:
1725         if (vfy)
1726                 X509_STORE_free(vfy);
1727         if (ch)
1728                 X509_STORE_free(ch);
1729         return rv;
1730         }