WinCE patches
[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  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111
112 #include <assert.h>
113 #include <stdio.h>
114 #include <stdlib.h>
115 #include <string.h>
116 #include <openssl/e_os2.h>
117 #ifdef OPENSSL_NO_STDIO
118 #define APPS_WIN16
119 #endif
120
121 /* With IPv6, it looks like Digital has mixed up the proper order of
122    recursive header file inclusion, resulting in the compiler complaining
123    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
124    is needed to have fileno() declared correctly...  So let's define u_int */
125 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
126 #define __U_INT
127 typedef unsigned int u_int;
128 #endif
129
130 #define USE_SOCKETS
131 #include "apps.h"
132 #include <openssl/x509.h>
133 #include <openssl/ssl.h>
134 #include <openssl/err.h>
135 #include <openssl/pem.h>
136 #include <openssl/rand.h>
137 #include "s_apps.h"
138
139 #ifdef OPENSSL_SYS_WINDOWS
140 #include <conio.h>
141 #endif
142
143 #ifdef OPENSSL_SYS_WINCE
144 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
145 #ifdef fileno
146 #undef fileno
147 #endif
148 #define fileno(a) (int)_fileno(a)
149 #endif
150
151
152 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
153 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
154 #undef FIONBIO
155 #endif
156
157 #undef PROG
158 #define PROG    s_client_main
159
160 /*#define SSL_HOST_NAME "www.netscape.com" */
161 /*#define SSL_HOST_NAME "193.118.187.102" */
162 #define SSL_HOST_NAME   "localhost"
163
164 /*#define TEST_CERT "client.pem" */ /* no default cert. */
165
166 #undef BUFSIZZ
167 #define BUFSIZZ 1024*8
168
169 extern int verify_depth;
170 extern int verify_error;
171
172 #ifdef FIONBIO
173 static int c_nbio=0;
174 #endif
175 static int c_Pause=0;
176 static int c_debug=0;
177 static int c_msg=0;
178 static int c_showcerts=0;
179
180 static void sc_usage(void);
181 static void print_stuff(BIO *berr,SSL *con,int full);
182 static BIO *bio_c_out=NULL;
183 static int c_quiet=0;
184 static int c_ign_eof=0;
185
186 static void sc_usage(void)
187         {
188         BIO_printf(bio_err,"usage: s_client args\n");
189         BIO_printf(bio_err,"\n");
190         BIO_printf(bio_err," -host host     - use -connect instead\n");
191         BIO_printf(bio_err," -port port     - use -connect instead\n");
192         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
193
194         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
195         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
196         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
197         BIO_printf(bio_err,"                 not specified but cert file is.\n");
198         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
199         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
200         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
201         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
202         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
203         BIO_printf(bio_err," -debug        - extra output\n");
204         BIO_printf(bio_err," -msg          - Show protocol messages\n");
205         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
206         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
207 #ifdef FIONBIO
208         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
209 #endif
210         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
211         BIO_printf(bio_err," -quiet        - no s_client output\n");
212         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
213         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
214         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
215         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
216         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
217         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
218         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
219         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
220         BIO_printf(bio_err,"                 command to see what is available\n");
221         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
222         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
223         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
224         BIO_printf(bio_err,"                 only \"smtp\" is supported.\n");
225         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
226         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
227
228         }
229
230 int MAIN(int, char **);
231
232 int MAIN(int argc, char **argv)
233         {
234         int off=0;
235         SSL *con=NULL,*con2=NULL;
236         X509_STORE *store = NULL;
237         int s,k,width,state=0;
238         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
239         int cbuf_len,cbuf_off;
240         int sbuf_len,sbuf_off;
241         fd_set readfds,writefds;
242         short port=PORT;
243         int full_log=1;
244         char *host=SSL_HOST_NAME;
245         char *cert_file=NULL,*key_file=NULL;
246         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
247         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
248         int crlf=0;
249         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
250         SSL_CTX *ctx=NULL;
251         int ret=1,in_init=1,i,nbio_test=0;
252         int smtp_starttls = 0;
253         int prexit = 0, vflags = 0;
254         SSL_METHOD *meth=NULL;
255         BIO *sbio;
256         char *inrand=NULL;
257         char *engine_id=NULL;
258         ENGINE *e=NULL;
259 #ifdef OPENSSL_SYS_WINDOWS
260         struct timeval tv;
261 #endif
262
263 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
264         meth=SSLv23_client_method();
265 #elif !defined(OPENSSL_NO_SSL3)
266         meth=SSLv3_client_method();
267 #elif !defined(OPENSSL_NO_SSL2)
268         meth=SSLv2_client_method();
269 #endif
270
271         apps_startup();
272         c_Pause=0;
273         c_quiet=0;
274         c_ign_eof=0;
275         c_debug=0;
276         c_msg=0;
277         c_showcerts=0;
278
279         if (bio_err == NULL)
280                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
281
282         if (!load_config(bio_err, NULL))
283                 goto end;
284
285         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
286                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
287                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
288                 {
289                 BIO_printf(bio_err,"out of memory\n");
290                 goto end;
291                 }
292
293         verify_depth=0;
294         verify_error=X509_V_OK;
295 #ifdef FIONBIO
296         c_nbio=0;
297 #endif
298
299         argc--;
300         argv++;
301         while (argc >= 1)
302                 {
303                 if      (strcmp(*argv,"-host") == 0)
304                         {
305                         if (--argc < 1) goto bad;
306                         host= *(++argv);
307                         }
308                 else if (strcmp(*argv,"-port") == 0)
309                         {
310                         if (--argc < 1) goto bad;
311                         port=atoi(*(++argv));
312                         if (port == 0) goto bad;
313                         }
314                 else if (strcmp(*argv,"-connect") == 0)
315                         {
316                         if (--argc < 1) goto bad;
317                         if (!extract_host_port(*(++argv),&host,NULL,&port))
318                                 goto bad;
319                         }
320                 else if (strcmp(*argv,"-verify") == 0)
321                         {
322                         verify=SSL_VERIFY_PEER;
323                         if (--argc < 1) goto bad;
324                         verify_depth=atoi(*(++argv));
325                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
326                         }
327                 else if (strcmp(*argv,"-cert") == 0)
328                         {
329                         if (--argc < 1) goto bad;
330                         cert_file= *(++argv);
331                         }
332                 else if (strcmp(*argv,"-crl_check") == 0)
333                         vflags |= X509_V_FLAG_CRL_CHECK;
334                 else if (strcmp(*argv,"-crl_check_all") == 0)
335                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
336                 else if (strcmp(*argv,"-prexit") == 0)
337                         prexit=1;
338                 else if (strcmp(*argv,"-crlf") == 0)
339                         crlf=1;
340                 else if (strcmp(*argv,"-quiet") == 0)
341                         {
342                         c_quiet=1;
343                         c_ign_eof=1;
344                         }
345                 else if (strcmp(*argv,"-ign_eof") == 0)
346                         c_ign_eof=1;
347                 else if (strcmp(*argv,"-pause") == 0)
348                         c_Pause=1;
349                 else if (strcmp(*argv,"-debug") == 0)
350                         c_debug=1;
351                 else if (strcmp(*argv,"-msg") == 0)
352                         c_msg=1;
353                 else if (strcmp(*argv,"-showcerts") == 0)
354                         c_showcerts=1;
355                 else if (strcmp(*argv,"-nbio_test") == 0)
356                         nbio_test=1;
357                 else if (strcmp(*argv,"-state") == 0)
358                         state=1;
359 #ifndef OPENSSL_NO_SSL2
360                 else if (strcmp(*argv,"-ssl2") == 0)
361                         meth=SSLv2_client_method();
362 #endif
363 #ifndef OPENSSL_NO_SSL3
364                 else if (strcmp(*argv,"-ssl3") == 0)
365                         meth=SSLv3_client_method();
366 #endif
367 #ifndef OPENSSL_NO_TLS1
368                 else if (strcmp(*argv,"-tls1") == 0)
369                         meth=TLSv1_client_method();
370 #endif
371                 else if (strcmp(*argv,"-bugs") == 0)
372                         bugs=1;
373                 else if (strcmp(*argv,"-key") == 0)
374                         {
375                         if (--argc < 1) goto bad;
376                         key_file= *(++argv);
377                         }
378                 else if (strcmp(*argv,"-reconnect") == 0)
379                         {
380                         reconnect=5;
381                         }
382                 else if (strcmp(*argv,"-CApath") == 0)
383                         {
384                         if (--argc < 1) goto bad;
385                         CApath= *(++argv);
386                         }
387                 else if (strcmp(*argv,"-CAfile") == 0)
388                         {
389                         if (--argc < 1) goto bad;
390                         CAfile= *(++argv);
391                         }
392                 else if (strcmp(*argv,"-no_tls1") == 0)
393                         off|=SSL_OP_NO_TLSv1;
394                 else if (strcmp(*argv,"-no_ssl3") == 0)
395                         off|=SSL_OP_NO_SSLv3;
396                 else if (strcmp(*argv,"-no_ssl2") == 0)
397                         off|=SSL_OP_NO_SSLv2;
398                 else if (strcmp(*argv,"-serverpref") == 0)
399                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
400                 else if (strcmp(*argv,"-cipher") == 0)
401                         {
402                         if (--argc < 1) goto bad;
403                         cipher= *(++argv);
404                         }
405 #ifdef FIONBIO
406                 else if (strcmp(*argv,"-nbio") == 0)
407                         { c_nbio=1; }
408 #endif
409                 else if (strcmp(*argv,"-starttls") == 0)
410                         {
411                         if (--argc < 1) goto bad;
412                         ++argv;
413                         if (strcmp(*argv,"smtp") == 0)
414                                 smtp_starttls = 1;
415                         else
416                                 goto bad;
417                         }
418                 else if (strcmp(*argv,"-engine") == 0)
419                         {
420                         if (--argc < 1) goto bad;
421                         engine_id = *(++argv);
422                         }
423                 else if (strcmp(*argv,"-rand") == 0)
424                         {
425                         if (--argc < 1) goto bad;
426                         inrand= *(++argv);
427                         }
428                 else
429                         {
430                         BIO_printf(bio_err,"unknown option %s\n",*argv);
431                         badop=1;
432                         break;
433                         }
434                 argc--;
435                 argv++;
436                 }
437         if (badop)
438                 {
439 bad:
440                 sc_usage();
441                 goto end;
442                 }
443
444         OpenSSL_add_ssl_algorithms();
445         SSL_load_error_strings();
446
447         e = setup_engine(bio_err, engine_id, 1);
448
449         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
450                 && !RAND_status())
451                 {
452                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
453                 }
454         if (inrand != NULL)
455                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
456                         app_RAND_load_files(inrand));
457
458         if (bio_c_out == NULL)
459                 {
460                 if (c_quiet && !c_debug && !c_msg)
461                         {
462                         bio_c_out=BIO_new(BIO_s_null());
463                         }
464                 else
465                         {
466                         if (bio_c_out == NULL)
467                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
468                         }
469                 }
470
471         ctx=SSL_CTX_new(meth);
472         if (ctx == NULL)
473                 {
474                 ERR_print_errors(bio_err);
475                 goto end;
476                 }
477
478         if (bugs)
479                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
480         else
481                 SSL_CTX_set_options(ctx,off);
482
483         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
484         if (cipher != NULL)
485                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
486                 BIO_printf(bio_err,"error setting cipher list\n");
487                 ERR_print_errors(bio_err);
488                 goto end;
489         }
490 #if 0
491         else
492                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
493 #endif
494
495         SSL_CTX_set_verify(ctx,verify,verify_callback);
496         if (!set_cert_stuff(ctx,cert_file,key_file))
497                 goto end;
498
499         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
500                 (!SSL_CTX_set_default_verify_paths(ctx)))
501                 {
502                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
503                 ERR_print_errors(bio_err);
504                 /* goto end; */
505                 }
506
507         store = SSL_CTX_get_cert_store(ctx);
508         X509_STORE_set_flags(store, vflags);
509
510         con=SSL_new(ctx);
511 #ifndef OPENSSL_NO_KRB5
512         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
513                 {
514                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
515                 }
516 #endif  /* OPENSSL_NO_KRB5  */
517 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
518
519 re_start:
520
521         if (init_client(&s,host,port) == 0)
522                 {
523                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
524                 SHUTDOWN(s);
525                 goto end;
526                 }
527         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
528
529 #ifdef FIONBIO
530         if (c_nbio)
531                 {
532                 unsigned long l=1;
533                 BIO_printf(bio_c_out,"turning on non blocking io\n");
534                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
535                         {
536                         ERR_print_errors(bio_err);
537                         goto end;
538                         }
539                 }
540 #endif                                              
541         if (c_Pause & 0x01) con->debug=1;
542         sbio=BIO_new_socket(s,BIO_NOCLOSE);
543
544         if (nbio_test)
545                 {
546                 BIO *test;
547
548                 test=BIO_new(BIO_f_nbio_test());
549                 sbio=BIO_push(test,sbio);
550                 }
551
552         if (c_debug)
553                 {
554                 con->debug=1;
555                 BIO_set_callback(sbio,bio_dump_cb);
556                 BIO_set_callback_arg(sbio,bio_c_out);
557                 }
558         if (c_msg)
559                 {
560                 SSL_set_msg_callback(con, msg_cb);
561                 SSL_set_msg_callback_arg(con, bio_c_out);
562                 }
563
564         SSL_set_bio(con,sbio,sbio);
565         SSL_set_connect_state(con);
566
567         /* ok, lets connect */
568         width=SSL_get_fd(con)+1;
569
570         read_tty=1;
571         write_tty=0;
572         tty_on=0;
573         read_ssl=1;
574         write_ssl=1;
575         
576         cbuf_len=0;
577         cbuf_off=0;
578         sbuf_len=0;
579         sbuf_off=0;
580
581         /* This is an ugly hack that does a lot of assumptions */
582         if (smtp_starttls)
583                 {
584                 BIO_read(sbio,mbuf,BUFSIZZ);
585                 BIO_printf(sbio,"STARTTLS\r\n");
586                 BIO_read(sbio,sbuf,BUFSIZZ);
587                 }
588
589         for (;;)
590                 {
591                 FD_ZERO(&readfds);
592                 FD_ZERO(&writefds);
593
594                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
595                         {
596                         in_init=1;
597                         tty_on=0;
598                         }
599                 else
600                         {
601                         tty_on=1;
602                         if (in_init)
603                                 {
604                                 in_init=0;
605                                 print_stuff(bio_c_out,con,full_log);
606                                 if (full_log > 0) full_log--;
607
608                                 if (smtp_starttls)
609                                         {
610                                         BIO_printf(bio_err,"%s",mbuf);
611                                         /* We don't need to know any more */
612                                         smtp_starttls = 0;
613                                         }
614
615                                 if (reconnect)
616                                         {
617                                         reconnect--;
618                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
619                                         SSL_shutdown(con);
620                                         SSL_set_connect_state(con);
621                                         SHUTDOWN(SSL_get_fd(con));
622                                         goto re_start;
623                                         }
624                                 }
625                         }
626
627                 ssl_pending = read_ssl && SSL_pending(con);
628
629                 if (!ssl_pending)
630                         {
631 #ifndef OPENSSL_SYS_WINDOWS
632                         if (tty_on)
633                                 {
634                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
635                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
636                                 }
637                         if (read_ssl)
638                                 FD_SET(SSL_get_fd(con),&readfds);
639                         if (write_ssl)
640                                 FD_SET(SSL_get_fd(con),&writefds);
641 #else
642                         if(!tty_on || !write_tty) {
643                                 if (read_ssl)
644                                         FD_SET(SSL_get_fd(con),&readfds);
645                                 if (write_ssl)
646                                         FD_SET(SSL_get_fd(con),&writefds);
647                         }
648 #endif
649 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
650                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
651
652                         /* Note: under VMS with SOCKETSHR the second parameter
653                          * is currently of type (int *) whereas under other
654                          * systems it is (void *) if you don't have a cast it
655                          * will choke the compiler: if you do have a cast then
656                          * you can either go for (int *) or (void *).
657                          */
658 #ifdef OPENSSL_SYS_WINDOWS
659                         /* Under Windows we make the assumption that we can
660                          * always write to the tty: therefore if we need to
661                          * write to the tty we just fall through. Otherwise
662                          * we timeout the select every second and see if there
663                          * are any keypresses. Note: this is a hack, in a proper
664                          * Windows application we wouldn't do this.
665                          */
666                         i=0;
667                         if(!write_tty) {
668                                 if(read_tty) {
669                                         tv.tv_sec = 1;
670                                         tv.tv_usec = 0;
671                                         i=select(width,(void *)&readfds,(void *)&writefds,
672                                                  NULL,&tv);
673 #ifdef OPENSSL_SYS_WINCE
674                                         if(!i && (!_kbhit() || !read_tty) ) continue;
675 #else
676                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
677 #endif
678                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
679                                          NULL,NULL);
680                         }
681 #else
682                         i=select(width,(void *)&readfds,(void *)&writefds,
683                                  NULL,NULL);
684 #endif
685                         if ( i < 0)
686                                 {
687                                 BIO_printf(bio_err,"bad select %d\n",
688                                 get_last_socket_error());
689                                 goto shut;
690                                 /* goto end; */
691                                 }
692                         }
693
694                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
695                         {
696                         k=SSL_write(con,&(cbuf[cbuf_off]),
697                                 (unsigned int)cbuf_len);
698                         switch (SSL_get_error(con,k))
699                                 {
700                         case SSL_ERROR_NONE:
701                                 cbuf_off+=k;
702                                 cbuf_len-=k;
703                                 if (k <= 0) goto end;
704                                 /* we have done a  write(con,NULL,0); */
705                                 if (cbuf_len <= 0)
706                                         {
707                                         read_tty=1;
708                                         write_ssl=0;
709                                         }
710                                 else /* if (cbuf_len > 0) */
711                                         {
712                                         read_tty=0;
713                                         write_ssl=1;
714                                         }
715                                 break;
716                         case SSL_ERROR_WANT_WRITE:
717                                 BIO_printf(bio_c_out,"write W BLOCK\n");
718                                 write_ssl=1;
719                                 read_tty=0;
720                                 break;
721                         case SSL_ERROR_WANT_READ:
722                                 BIO_printf(bio_c_out,"write R BLOCK\n");
723                                 write_tty=0;
724                                 read_ssl=1;
725                                 write_ssl=0;
726                                 break;
727                         case SSL_ERROR_WANT_X509_LOOKUP:
728                                 BIO_printf(bio_c_out,"write X BLOCK\n");
729                                 break;
730                         case SSL_ERROR_ZERO_RETURN:
731                                 if (cbuf_len != 0)
732                                         {
733                                         BIO_printf(bio_c_out,"shutdown\n");
734                                         goto shut;
735                                         }
736                                 else
737                                         {
738                                         read_tty=1;
739                                         write_ssl=0;
740                                         break;
741                                         }
742                                 
743                         case SSL_ERROR_SYSCALL:
744                                 if ((k != 0) || (cbuf_len != 0))
745                                         {
746                                         BIO_printf(bio_err,"write:errno=%d\n",
747                                                 get_last_socket_error());
748                                         goto shut;
749                                         }
750                                 else
751                                         {
752                                         read_tty=1;
753                                         write_ssl=0;
754                                         }
755                                 break;
756                         case SSL_ERROR_SSL:
757                                 ERR_print_errors(bio_err);
758                                 goto shut;
759                                 }
760                         }
761 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
762                 /* Assume Windows/DOS can always write */
763                 else if (!ssl_pending && write_tty)
764 #else
765                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
766 #endif
767                         {
768 #ifdef CHARSET_EBCDIC
769                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
770 #endif
771                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
772
773                         if (i <= 0)
774                                 {
775                                 BIO_printf(bio_c_out,"DONE\n");
776                                 goto shut;
777                                 /* goto end; */
778                                 }
779
780                         sbuf_len-=i;;
781                         sbuf_off+=i;
782                         if (sbuf_len <= 0)
783                                 {
784                                 read_ssl=1;
785                                 write_tty=0;
786                                 }
787                         }
788                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
789                         {
790 #ifdef RENEG
791 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
792 #endif
793 #if 1
794                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
795 #else
796 /* Demo for pending and peek :-) */
797                         k=SSL_read(con,sbuf,16);
798 { char zbuf[10240]; 
799 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
800 }
801 #endif
802
803                         switch (SSL_get_error(con,k))
804                                 {
805                         case SSL_ERROR_NONE:
806                                 if (k <= 0)
807                                         goto end;
808                                 sbuf_off=0;
809                                 sbuf_len=k;
810
811                                 read_ssl=0;
812                                 write_tty=1;
813                                 break;
814                         case SSL_ERROR_WANT_WRITE:
815                                 BIO_printf(bio_c_out,"read W BLOCK\n");
816                                 write_ssl=1;
817                                 read_tty=0;
818                                 break;
819                         case SSL_ERROR_WANT_READ:
820                                 BIO_printf(bio_c_out,"read R BLOCK\n");
821                                 write_tty=0;
822                                 read_ssl=1;
823                                 if ((read_tty == 0) && (write_ssl == 0))
824                                         write_ssl=1;
825                                 break;
826                         case SSL_ERROR_WANT_X509_LOOKUP:
827                                 BIO_printf(bio_c_out,"read X BLOCK\n");
828                                 break;
829                         case SSL_ERROR_SYSCALL:
830                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
831                                 goto shut;
832                         case SSL_ERROR_ZERO_RETURN:
833                                 BIO_printf(bio_c_out,"closed\n");
834                                 goto shut;
835                         case SSL_ERROR_SSL:
836                                 ERR_print_errors(bio_err);
837                                 goto shut;
838                                 /* break; */
839                                 }
840                         }
841
842 #ifdef OPENSSL_SYS_WINDOWS
843 #ifdef OPENSSL_SYS_WINCE
844                 else if (_kbhit())
845 #else
846                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
847 #endif
848 #else
849                 else if (FD_ISSET(fileno(stdin),&readfds))
850 #endif
851                         {
852                         if (crlf)
853                                 {
854                                 int j, lf_num;
855
856                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
857                                 lf_num = 0;
858                                 /* both loops are skipped when i <= 0 */
859                                 for (j = 0; j < i; j++)
860                                         if (cbuf[j] == '\n')
861                                                 lf_num++;
862                                 for (j = i-1; j >= 0; j--)
863                                         {
864                                         cbuf[j+lf_num] = cbuf[j];
865                                         if (cbuf[j] == '\n')
866                                                 {
867                                                 lf_num--;
868                                                 i++;
869                                                 cbuf[j+lf_num] = '\r';
870                                                 }
871                                         }
872                                 assert(lf_num == 0);
873                                 }
874                         else
875                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
876
877                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
878                                 {
879                                 BIO_printf(bio_err,"DONE\n");
880                                 goto shut;
881                                 }
882
883                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
884                                 {
885                                 BIO_printf(bio_err,"RENEGOTIATING\n");
886                                 SSL_renegotiate(con);
887                                 cbuf_len=0;
888                                 }
889                         else
890                                 {
891                                 cbuf_len=i;
892                                 cbuf_off=0;
893 #ifdef CHARSET_EBCDIC
894                                 ebcdic2ascii(cbuf, cbuf, i);
895 #endif
896                                 }
897
898                         write_ssl=1;
899                         read_tty=0;
900                         }
901                 }
902 shut:
903         SSL_shutdown(con);
904         SHUTDOWN(SSL_get_fd(con));
905         ret=0;
906 end:
907         if(prexit) print_stuff(bio_c_out,con,1);
908         if (con != NULL) SSL_free(con);
909         if (con2 != NULL) SSL_free(con2);
910         if (ctx != NULL) SSL_CTX_free(ctx);
911         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
912         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
913         if (mbuf != NULL) { memset(mbuf,0,BUFSIZZ); OPENSSL_free(mbuf); }
914         if (bio_c_out != NULL)
915                 {
916                 BIO_free(bio_c_out);
917                 bio_c_out=NULL;
918                 }
919         apps_shutdown();
920         EXIT(ret);
921         }
922
923
924 static void print_stuff(BIO *bio, SSL *s, int full)
925         {
926         X509 *peer=NULL;
927         char *p;
928         static char *space="                ";
929         char buf[BUFSIZ];
930         STACK_OF(X509) *sk;
931         STACK_OF(X509_NAME) *sk2;
932         SSL_CIPHER *c;
933         X509_NAME *xn;
934         int j,i;
935
936         if (full)
937                 {
938                 int got_a_chain = 0;
939
940                 sk=SSL_get_peer_cert_chain(s);
941                 if (sk != NULL)
942                         {
943                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
944
945                         BIO_printf(bio,"---\nCertificate chain\n");
946                         for (i=0; i<sk_X509_num(sk); i++)
947                                 {
948                                 X509_NAME_oneline(X509_get_subject_name(
949                                         sk_X509_value(sk,i)),buf,sizeof buf);
950                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
951                                 X509_NAME_oneline(X509_get_issuer_name(
952                                         sk_X509_value(sk,i)),buf,sizeof buf);
953                                 BIO_printf(bio,"   i:%s\n",buf);
954                                 if (c_showcerts)
955                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
956                                 }
957                         }
958
959                 BIO_printf(bio,"---\n");
960                 peer=SSL_get_peer_certificate(s);
961                 if (peer != NULL)
962                         {
963                         BIO_printf(bio,"Server certificate\n");
964                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
965                                 PEM_write_bio_X509(bio,peer);
966                         X509_NAME_oneline(X509_get_subject_name(peer),
967                                 buf,sizeof buf);
968                         BIO_printf(bio,"subject=%s\n",buf);
969                         X509_NAME_oneline(X509_get_issuer_name(peer),
970                                 buf,sizeof buf);
971                         BIO_printf(bio,"issuer=%s\n",buf);
972                         }
973                 else
974                         BIO_printf(bio,"no peer certificate available\n");
975
976                 sk2=SSL_get_client_CA_list(s);
977                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
978                         {
979                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
980                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
981                                 {
982                                 xn=sk_X509_NAME_value(sk2,i);
983                                 X509_NAME_oneline(xn,buf,sizeof(buf));
984                                 BIO_write(bio,buf,strlen(buf));
985                                 BIO_write(bio,"\n",1);
986                                 }
987                         }
988                 else
989                         {
990                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
991                         }
992                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
993                 if (p != NULL)
994                         {
995                         /* This works only for SSL 2.  In later protocol
996                          * versions, the client does not know what other
997                          * ciphers (in addition to the one to be used
998                          * in the current connection) the server supports. */
999
1000                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1001                         j=i=0;
1002                         while (*p)
1003                                 {
1004                                 if (*p == ':')
1005                                         {
1006                                         BIO_write(bio,space,15-j%25);
1007                                         i++;
1008                                         j=0;
1009                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1010                                         }
1011                                 else
1012                                         {
1013                                         BIO_write(bio,p,1);
1014                                         j++;
1015                                         }
1016                                 p++;
1017                                 }
1018                         BIO_write(bio,"\n",1);
1019                         }
1020
1021                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1022                         BIO_number_read(SSL_get_rbio(s)),
1023                         BIO_number_written(SSL_get_wbio(s)));
1024                 }
1025         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1026         c=SSL_get_current_cipher(s);
1027         BIO_printf(bio,"%s, Cipher is %s\n",
1028                 SSL_CIPHER_get_version(c),
1029                 SSL_CIPHER_get_name(c));
1030         if (peer != NULL) {
1031                 EVP_PKEY *pktmp;
1032                 pktmp = X509_get_pubkey(peer);
1033                 BIO_printf(bio,"Server public key is %d bit\n",
1034                                                          EVP_PKEY_bits(pktmp));
1035                 EVP_PKEY_free(pktmp);
1036         }
1037         SSL_SESSION_print(bio,SSL_get_session(s));
1038         BIO_printf(bio,"---\n");
1039         if (peer != NULL)
1040                 X509_free(peer);
1041         /* flush, or debugging output gets mixed with http response */
1042         BIO_flush(bio);
1043         }
1044