New functions and option to use NEW in certificate requests.
[openssl.git] / apps / s_client.c
1 /* apps/s_client.c */
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 #include <assert.h>
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #ifdef NO_STDIO
64 #define APPS_WIN16
65 #endif
66
67 /* With IPv6, it looks like Digital has mixed up the proper order of
68    recursive header file inclusion, resulting in the compiler complaining
69    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
70    is needed to have fileno() declared correctly...  So let's define u_int */
71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
72 #define __U_INT
73 typedef unsigned int u_int;
74 #endif
75
76 #define USE_SOCKETS
77 #include "apps.h"
78 #include <openssl/x509.h>
79 #include <openssl/ssl.h>
80 #include <openssl/err.h>
81 #include <openssl/pem.h>
82 #include "s_apps.h"
83
84 #ifdef WINDOWS
85 #include <conio.h>
86 #endif
87
88
89 #if (defined(VMS) && __VMS_VER < 70000000)
90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
91 #undef FIONBIO
92 #endif
93
94 #undef PROG
95 #define PROG    s_client_main
96
97 /*#define SSL_HOST_NAME "www.netscape.com" */
98 /*#define SSL_HOST_NAME "193.118.187.102" */
99 #define SSL_HOST_NAME   "localhost"
100
101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
102
103 #undef BUFSIZZ
104 #define BUFSIZZ 1024*8
105
106 extern int verify_depth;
107 extern int verify_error;
108
109 #ifdef FIONBIO
110 static int c_nbio=0;
111 #endif
112 static int c_Pause=0;
113 static int c_debug=0;
114 static int c_showcerts=0;
115
116 static void sc_usage(void);
117 static void print_stuff(BIO *berr,SSL *con,int full);
118 static BIO *bio_c_out=NULL;
119 static int c_quiet=0;
120
121 static void sc_usage(void)
122         {
123         BIO_printf(bio_err,"usage: s_client args\n");
124         BIO_printf(bio_err,"\n");
125         BIO_printf(bio_err," -host host     - use -connect instead\n");
126         BIO_printf(bio_err," -port port     - use -connect instead\n");
127         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
128
129         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
130         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
131         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
132         BIO_printf(bio_err,"                 not specified but cert file is.\n");
133         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
134         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
135         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
136         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
137         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
138         BIO_printf(bio_err," -debug        - extra output\n");
139         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
140         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
141 #ifdef FIONBIO
142         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
143 #endif
144         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
145         BIO_printf(bio_err," -quiet        - no s_client output\n");
146         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
147         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
148         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
149         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
150         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
151         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
152         BIO_printf(bio_err,"                 command to see what is available\n");
153
154         }
155
156 int MAIN(int, char **);
157
158 int MAIN(int argc, char **argv)
159         {
160         int off=0;
161         SSL *con=NULL,*con2=NULL;
162         int s,k,width,state=0;
163         char *cbuf=NULL,*sbuf=NULL;
164         int cbuf_len,cbuf_off;
165         int sbuf_len,sbuf_off;
166         fd_set readfds,writefds;
167         short port=PORT;
168         int full_log=1;
169         char *host=SSL_HOST_NAME;
170         char *cert_file=NULL,*key_file=NULL;
171         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
172         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
173         int crlf=0;
174         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
175         SSL_CTX *ctx=NULL;
176         int ret=1,in_init=1,i,nbio_test=0;
177         int prexit = 0;
178         SSL_METHOD *meth=NULL;
179         BIO *sbio;
180 #ifdef WINDOWS
181         struct timeval tv;
182 #endif
183
184 #if !defined(NO_SSL2) && !defined(NO_SSL3)
185         meth=SSLv23_client_method();
186 #elif !defined(NO_SSL3)
187         meth=SSLv3_client_method();
188 #elif !defined(NO_SSL2)
189         meth=SSLv2_client_method();
190 #endif
191
192         apps_startup();
193         c_Pause=0;
194         c_quiet=0;
195         c_debug=0;
196         c_showcerts=0;
197
198         if (bio_err == NULL)
199                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
200
201         if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
202                 ((sbuf=Malloc(BUFSIZZ)) == NULL))
203                 {
204                 BIO_printf(bio_err,"out of memory\n");
205                 goto end;
206                 }
207
208         verify_depth=0;
209         verify_error=X509_V_OK;
210 #ifdef FIONBIO
211         c_nbio=0;
212 #endif
213
214         argc--;
215         argv++;
216         while (argc >= 1)
217                 {
218                 if      (strcmp(*argv,"-host") == 0)
219                         {
220                         if (--argc < 1) goto bad;
221                         host= *(++argv);
222                         }
223                 else if (strcmp(*argv,"-port") == 0)
224                         {
225                         if (--argc < 1) goto bad;
226                         port=atoi(*(++argv));
227                         if (port == 0) goto bad;
228                         }
229                 else if (strcmp(*argv,"-connect") == 0)
230                         {
231                         if (--argc < 1) goto bad;
232                         if (!extract_host_port(*(++argv),&host,NULL,&port))
233                                 goto bad;
234                         }
235                 else if (strcmp(*argv,"-verify") == 0)
236                         {
237                         verify=SSL_VERIFY_PEER;
238                         if (--argc < 1) goto bad;
239                         verify_depth=atoi(*(++argv));
240                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
241                         }
242                 else if (strcmp(*argv,"-cert") == 0)
243                         {
244                         if (--argc < 1) goto bad;
245                         cert_file= *(++argv);
246                         }
247                 else if (strcmp(*argv,"-prexit") == 0)
248                         prexit=1;
249                 else if (strcmp(*argv,"-crlf") == 0)
250                         crlf=1;
251                 else if (strcmp(*argv,"-quiet") == 0)
252                         c_quiet=1;
253                 else if (strcmp(*argv,"-pause") == 0)
254                         c_Pause=1;
255                 else if (strcmp(*argv,"-debug") == 0)
256                         c_debug=1;
257                 else if (strcmp(*argv,"-showcerts") == 0)
258                         c_showcerts=1;
259                 else if (strcmp(*argv,"-nbio_test") == 0)
260                         nbio_test=1;
261                 else if (strcmp(*argv,"-state") == 0)
262                         state=1;
263 #ifndef NO_SSL2
264                 else if (strcmp(*argv,"-ssl2") == 0)
265                         meth=SSLv2_client_method();
266 #endif
267 #ifndef NO_SSL3
268                 else if (strcmp(*argv,"-ssl3") == 0)
269                         meth=SSLv3_client_method();
270 #endif
271 #ifndef NO_TLS1
272                 else if (strcmp(*argv,"-tls1") == 0)
273                         meth=TLSv1_client_method();
274 #endif
275                 else if (strcmp(*argv,"-bugs") == 0)
276                         bugs=1;
277                 else if (strcmp(*argv,"-key") == 0)
278                         {
279                         if (--argc < 1) goto bad;
280                         key_file= *(++argv);
281                         }
282                 else if (strcmp(*argv,"-reconnect") == 0)
283                         {
284                         reconnect=5;
285                         }
286                 else if (strcmp(*argv,"-CApath") == 0)
287                         {
288                         if (--argc < 1) goto bad;
289                         CApath= *(++argv);
290                         }
291                 else if (strcmp(*argv,"-CAfile") == 0)
292                         {
293                         if (--argc < 1) goto bad;
294                         CAfile= *(++argv);
295                         }
296                 else if (strcmp(*argv,"-no_tls1") == 0)
297                         off|=SSL_OP_NO_TLSv1;
298                 else if (strcmp(*argv,"-no_ssl3") == 0)
299                         off|=SSL_OP_NO_SSLv3;
300                 else if (strcmp(*argv,"-no_ssl2") == 0)
301                         off|=SSL_OP_NO_SSLv2;
302                 else if (strcmp(*argv,"-cipher") == 0)
303                         {
304                         if (--argc < 1) goto bad;
305                         cipher= *(++argv);
306                         }
307 #ifdef FIONBIO
308                 else if (strcmp(*argv,"-nbio") == 0)
309                         { c_nbio=1; }
310 #endif
311                 else
312                         {
313                         BIO_printf(bio_err,"unknown option %s\n",*argv);
314                         badop=1;
315                         break;
316                         }
317                 argc--;
318                 argv++;
319                 }
320         if (badop)
321                 {
322 bad:
323                 sc_usage();
324                 goto end;
325                 }
326
327         app_RAND_load_file(NULL, bio_err, 0);
328
329         if (bio_c_out == NULL)
330                 {
331                 if (c_quiet)
332                         {
333                         bio_c_out=BIO_new(BIO_s_null());
334                         }
335                 else
336                         {
337                         if (bio_c_out == NULL)
338                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
339                         }
340                 }
341
342         OpenSSL_add_ssl_algorithms();
343         SSL_load_error_strings();
344         ctx=SSL_CTX_new(meth);
345         if (ctx == NULL)
346                 {
347                 ERR_print_errors(bio_err);
348                 goto end;
349                 }
350
351         if (bugs)
352                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
353         else
354                 SSL_CTX_set_options(ctx,off);
355
356         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
357         if (cipher != NULL)
358                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
359                 BIO_printf(bio_err,"error setting cipher list\n");
360                 ERR_print_errors(bio_err);
361                 goto end;
362         }
363 #if 0
364         else
365                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
366 #endif
367
368         SSL_CTX_set_verify(ctx,verify,verify_callback);
369         if (!set_cert_stuff(ctx,cert_file,key_file))
370                 goto end;
371
372         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
373                 (!SSL_CTX_set_default_verify_paths(ctx)))
374                 {
375                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
376                 ERR_print_errors(bio_err);
377                 /* goto end; */
378                 }
379
380
381         con=SSL_new(ctx);
382 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
383
384 re_start:
385
386         if (init_client(&s,host,port) == 0)
387                 {
388                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
389                 SHUTDOWN(s);
390                 goto end;
391                 }
392         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
393
394 #ifdef FIONBIO
395         if (c_nbio)
396                 {
397                 unsigned long l=1;
398                 BIO_printf(bio_c_out,"turning on non blocking io\n");
399                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
400                         {
401                         ERR_print_errors(bio_err);
402                         goto end;
403                         }
404                 }
405 #endif                                              
406         if (c_Pause & 0x01) con->debug=1;
407         sbio=BIO_new_socket(s,BIO_NOCLOSE);
408
409         if (nbio_test)
410                 {
411                 BIO *test;
412
413                 test=BIO_new(BIO_f_nbio_test());
414                 sbio=BIO_push(test,sbio);
415                 }
416
417         if (c_debug)
418                 {
419                 con->debug=1;
420                 BIO_set_callback(sbio,bio_dump_cb);
421                 BIO_set_callback_arg(sbio,bio_c_out);
422                 }
423
424         SSL_set_bio(con,sbio,sbio);
425         SSL_set_connect_state(con);
426
427         /* ok, lets connect */
428         width=SSL_get_fd(con)+1;
429
430         read_tty=1;
431         write_tty=0;
432         tty_on=0;
433         read_ssl=1;
434         write_ssl=1;
435         
436         cbuf_len=0;
437         cbuf_off=0;
438         sbuf_len=0;
439         sbuf_off=0;
440
441         for (;;)
442                 {
443                 FD_ZERO(&readfds);
444                 FD_ZERO(&writefds);
445
446                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
447                         {
448                         in_init=1;
449                         tty_on=0;
450                         }
451                 else
452                         {
453                         tty_on=1;
454                         if (in_init)
455                                 {
456                                 in_init=0;
457                                 print_stuff(bio_c_out,con,full_log);
458                                 if (full_log > 0) full_log--;
459
460                                 if (reconnect)
461                                         {
462                                         reconnect--;
463                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
464                                         SSL_shutdown(con);
465                                         SSL_set_connect_state(con);
466                                         SHUTDOWN(SSL_get_fd(con));
467                                         goto re_start;
468                                         }
469                                 }
470                         }
471
472                 ssl_pending = read_ssl && SSL_pending(con);
473
474                 if (!ssl_pending)
475                         {
476 #ifndef WINDOWS
477                         if (tty_on)
478                                 {
479                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
480                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
481                                 }
482                         if (read_ssl)
483                                 FD_SET(SSL_get_fd(con),&readfds);
484                         if (write_ssl)
485                                 FD_SET(SSL_get_fd(con),&writefds);
486 #else
487                         if(!tty_on || !write_tty) {
488                                 if (read_ssl)
489                                         FD_SET(SSL_get_fd(con),&readfds);
490                                 if (write_ssl)
491                                         FD_SET(SSL_get_fd(con),&writefds);
492                         }
493 #endif
494 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
495                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
496
497                         /* Note: under VMS with SOCKETSHR the second parameter
498                          * is currently of type (int *) whereas under other
499                          * systems it is (void *) if you don't have a cast it
500                          * will choke the compiler: if you do have a cast then
501                          * you can either go for (int *) or (void *).
502                          */
503 #ifdef WINDOWS
504                         /* Under Windows we make the assumption that we can
505                          * always write to the tty: therefore if we need to
506                          * write to the tty we just fall through. Otherwise
507                          * we timeout the select every second and see if there
508                          * are any keypresses. Note: this is a hack, in a proper
509                          * Windows application we wouldn't do this.
510                          */
511                         if(!write_tty) {
512                                 if(read_tty) {
513                                         tv.tv_sec = 1;
514                                         tv.tv_usec = 0;
515                                         i=select(width,(void *)&readfds,(void *)&writefds,
516                                                  NULL,&tv);
517                                         if(!i && (!_kbhit() || !read_tty) ) continue;
518                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
519                                          NULL,NULL);
520                         }
521 #else
522                         i=select(width,(void *)&readfds,(void *)&writefds,
523                                  NULL,NULL);
524 #endif
525                         if ( i < 0)
526                                 {
527                                 BIO_printf(bio_err,"bad select %d\n",
528                                 get_last_socket_error());
529                                 goto shut;
530                                 /* goto end; */
531                                 }
532                         }
533
534                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
535                         {
536                         k=SSL_write(con,&(cbuf[cbuf_off]),
537                                 (unsigned int)cbuf_len);
538                         switch (SSL_get_error(con,k))
539                                 {
540                         case SSL_ERROR_NONE:
541                                 cbuf_off+=k;
542                                 cbuf_len-=k;
543                                 if (k <= 0) goto end;
544                                 /* we have done a  write(con,NULL,0); */
545                                 if (cbuf_len <= 0)
546                                         {
547                                         read_tty=1;
548                                         write_ssl=0;
549                                         }
550                                 else /* if (cbuf_len > 0) */
551                                         {
552                                         read_tty=0;
553                                         write_ssl=1;
554                                         }
555                                 break;
556                         case SSL_ERROR_WANT_WRITE:
557                                 BIO_printf(bio_c_out,"write W BLOCK\n");
558                                 write_ssl=1;
559                                 read_tty=0;
560                                 break;
561                         case SSL_ERROR_WANT_READ:
562                                 BIO_printf(bio_c_out,"write R BLOCK\n");
563                                 write_tty=0;
564                                 read_ssl=1;
565                                 write_ssl=0;
566                                 break;
567                         case SSL_ERROR_WANT_X509_LOOKUP:
568                                 BIO_printf(bio_c_out,"write X BLOCK\n");
569                                 break;
570                         case SSL_ERROR_ZERO_RETURN:
571                                 if (cbuf_len != 0)
572                                         {
573                                         BIO_printf(bio_c_out,"shutdown\n");
574                                         goto shut;
575                                         }
576                                 else
577                                         {
578                                         read_tty=1;
579                                         write_ssl=0;
580                                         break;
581                                         }
582                                 
583                         case SSL_ERROR_SYSCALL:
584                                 if ((k != 0) || (cbuf_len != 0))
585                                         {
586                                         BIO_printf(bio_err,"write:errno=%d\n",
587                                                 get_last_socket_error());
588                                         goto shut;
589                                         }
590                                 else
591                                         {
592                                         read_tty=1;
593                                         write_ssl=0;
594                                         }
595                                 break;
596                         case SSL_ERROR_SSL:
597                                 ERR_print_errors(bio_err);
598                                 goto shut;
599                                 }
600                         }
601 #ifdef WINDOWS
602                 /* Assume Windows can always write */
603                 else if (!ssl_pending && write_tty)
604 #else
605                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
606 #endif
607                         {
608 #ifdef CHARSET_EBCDIC
609                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
610 #endif
611                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
612
613                         if (i <= 0)
614                                 {
615                                 BIO_printf(bio_c_out,"DONE\n");
616                                 goto shut;
617                                 /* goto end; */
618                                 }
619
620                         sbuf_len-=i;;
621                         sbuf_off+=i;
622                         if (sbuf_len <= 0)
623                                 {
624                                 read_ssl=1;
625                                 write_tty=0;
626                                 }
627                         }
628                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
629                         {
630 #ifdef RENEG
631 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
632 #endif
633 #if 1
634                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
635 #else
636 /* Demo for pending and peek :-) */
637                         k=SSL_read(con,sbuf,16);
638 { char zbuf[10240]; 
639 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
640 }
641 #endif
642
643                         switch (SSL_get_error(con,k))
644                                 {
645                         case SSL_ERROR_NONE:
646                                 if (k <= 0)
647                                         goto end;
648                                 sbuf_off=0;
649                                 sbuf_len=k;
650
651                                 read_ssl=0;
652                                 write_tty=1;
653                                 break;
654                         case SSL_ERROR_WANT_WRITE:
655                                 BIO_printf(bio_c_out,"read W BLOCK\n");
656                                 write_ssl=1;
657                                 read_tty=0;
658                                 break;
659                         case SSL_ERROR_WANT_READ:
660                                 BIO_printf(bio_c_out,"read R BLOCK\n");
661                                 write_tty=0;
662                                 read_ssl=1;
663                                 if ((read_tty == 0) && (write_ssl == 0))
664                                         write_ssl=1;
665                                 break;
666                         case SSL_ERROR_WANT_X509_LOOKUP:
667                                 BIO_printf(bio_c_out,"read X BLOCK\n");
668                                 break;
669                         case SSL_ERROR_SYSCALL:
670                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
671                                 goto shut;
672                         case SSL_ERROR_ZERO_RETURN:
673                                 BIO_printf(bio_c_out,"closed\n");
674                                 goto shut;
675                         case SSL_ERROR_SSL:
676                                 ERR_print_errors(bio_err);
677                                 goto shut;
678                                 /* break; */
679                                 }
680                         }
681
682 #ifdef WINDOWS
683                 else if (_kbhit())
684 #else
685                 else if (FD_ISSET(fileno(stdin),&readfds))
686 #endif
687                         {
688                         if (crlf)
689                                 {
690                                 int j, lf_num;
691
692                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
693                                 lf_num = 0;
694                                 /* both loops are skipped when i <= 0 */
695                                 for (j = 0; j < i; j++)
696                                         if (cbuf[j] == '\n')
697                                                 lf_num++;
698                                 for (j = i-1; j >= 0; j--)
699                                         {
700                                         cbuf[j+lf_num] = cbuf[j];
701                                         if (cbuf[j] == '\n')
702                                                 {
703                                                 lf_num--;
704                                                 i++;
705                                                 cbuf[j+lf_num] = '\r';
706                                                 }
707                                         }
708                                 assert(lf_num == 0);
709                                 }
710                         else
711                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
712
713                         if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
714                                 {
715                                 BIO_printf(bio_err,"DONE\n");
716                                 goto shut;
717                                 }
718
719                         if ((!c_quiet) && (cbuf[0] == 'R'))
720                                 {
721                                 BIO_printf(bio_err,"RENEGOTIATING\n");
722                                 SSL_renegotiate(con);
723                                 cbuf_len=0;
724                                 }
725                         else
726                                 {
727                                 cbuf_len=i;
728                                 cbuf_off=0;
729 #ifdef CHARSET_EBCDIC
730                                 ebcdic2ascii(cbuf, cbuf, i);
731 #endif
732                                 }
733
734                         write_ssl=1;
735                         read_tty=0;
736                         }
737                 }
738 shut:
739         SSL_shutdown(con);
740         SHUTDOWN(SSL_get_fd(con));
741         ret=0;
742 end:
743         if(prexit) print_stuff(bio_c_out,con,1);
744         if (con != NULL) SSL_free(con);
745         if (con2 != NULL) SSL_free(con2);
746         if (ctx != NULL) SSL_CTX_free(ctx);
747         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
748         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
749         if (bio_c_out != NULL)
750                 {
751                 BIO_free(bio_c_out);
752                 bio_c_out=NULL;
753                 }
754         EXIT(ret);
755         }
756
757
758 static void print_stuff(BIO *bio, SSL *s, int full)
759         {
760         X509 *peer=NULL;
761         char *p;
762         static char *space="                ";
763         char buf[BUFSIZ];
764         STACK_OF(X509) *sk;
765         STACK_OF(X509_NAME) *sk2;
766         SSL_CIPHER *c;
767         X509_NAME *xn;
768         int j,i;
769
770         if (full)
771                 {
772                 int got_a_chain = 0;
773
774                 sk=SSL_get_peer_cert_chain(s);
775                 if (sk != NULL)
776                         {
777                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
778
779                         BIO_printf(bio,"---\nCertificate chain\n");
780                         for (i=0; i<sk_X509_num(sk); i++)
781                                 {
782                                 X509_NAME_oneline(X509_get_subject_name(
783                                         sk_X509_value(sk,i)),buf,BUFSIZ);
784                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
785                                 X509_NAME_oneline(X509_get_issuer_name(
786                                         sk_X509_value(sk,i)),buf,BUFSIZ);
787                                 BIO_printf(bio,"   i:%s\n",buf);
788                                 if (c_showcerts)
789                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
790                                 }
791                         }
792
793                 BIO_printf(bio,"---\n");
794                 peer=SSL_get_peer_certificate(s);
795                 if (peer != NULL)
796                         {
797                         BIO_printf(bio,"Server certificate\n");
798                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
799                                 PEM_write_bio_X509(bio,peer);
800                         X509_NAME_oneline(X509_get_subject_name(peer),
801                                 buf,BUFSIZ);
802                         BIO_printf(bio,"subject=%s\n",buf);
803                         X509_NAME_oneline(X509_get_issuer_name(peer),
804                                 buf,BUFSIZ);
805                         BIO_printf(bio,"issuer=%s\n",buf);
806                         }
807                 else
808                         BIO_printf(bio,"no peer certificate available\n");
809
810                 sk2=SSL_get_client_CA_list(s);
811                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
812                         {
813                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
814                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
815                                 {
816                                 xn=sk_X509_NAME_value(sk2,i);
817                                 X509_NAME_oneline(xn,buf,sizeof(buf));
818                                 BIO_write(bio,buf,strlen(buf));
819                                 BIO_write(bio,"\n",1);
820                                 }
821                         }
822                 else
823                         {
824                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
825                         }
826                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
827                 if (p != NULL)
828                         {
829                         /* This works only for SSL 2.  In later protocol
830                          * versions, the client does not know what other
831                          * ciphers (in addition to the one to be used
832                          * in the current connection) the server supports. */
833
834                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
835                         j=i=0;
836                         while (*p)
837                                 {
838                                 if (*p == ':')
839                                         {
840                                         BIO_write(bio,space,15-j%25);
841                                         i++;
842                                         j=0;
843                                         BIO_write(bio,((i%3)?" ":"\n"),1);
844                                         }
845                                 else
846                                         {
847                                         BIO_write(bio,p,1);
848                                         j++;
849                                         }
850                                 p++;
851                                 }
852                         BIO_write(bio,"\n",1);
853                         }
854
855                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
856                         BIO_number_read(SSL_get_rbio(s)),
857                         BIO_number_written(SSL_get_wbio(s)));
858                 }
859         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
860         c=SSL_get_current_cipher(s);
861         BIO_printf(bio,"%s, Cipher is %s\n",
862                 SSL_CIPHER_get_version(c),
863                 SSL_CIPHER_get_name(c));
864         if (peer != NULL) {
865                 EVP_PKEY *pktmp;
866                 pktmp = X509_get_pubkey(peer);
867                 BIO_printf(bio,"Server public key is %d bit\n",
868                                                          EVP_PKEY_bits(pktmp));
869                 EVP_PKEY_free(pktmp);
870         }
871         SSL_SESSION_print(bio,SSL_get_session(s));
872         BIO_printf(bio,"---\n");
873         if (peer != NULL)
874                 X509_free(peer);
875         }
876