fa881e13054cabe370a4815d335ddd47d9a8fcce
[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
144 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
145 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
146 #undef FIONBIO
147 #endif
148
149 #undef PROG
150 #define PROG    s_client_main
151
152 /*#define SSL_HOST_NAME "www.netscape.com" */
153 /*#define SSL_HOST_NAME "193.118.187.102" */
154 #define SSL_HOST_NAME   "localhost"
155
156 /*#define TEST_CERT "client.pem" */ /* no default cert. */
157
158 #undef BUFSIZZ
159 #define BUFSIZZ 1024*8
160
161 extern int verify_depth;
162 extern int verify_error;
163
164 #ifdef FIONBIO
165 static int c_nbio=0;
166 #endif
167 static int c_Pause=0;
168 static int c_debug=0;
169 static int c_msg=0;
170 static int c_showcerts=0;
171
172 static void sc_usage(void);
173 static void print_stuff(BIO *berr,SSL *con,int full);
174 static BIO *bio_c_out=NULL;
175 static int c_quiet=0;
176 static int c_ign_eof=0;
177
178 static void sc_usage(void)
179         {
180         BIO_printf(bio_err,"usage: s_client args\n");
181         BIO_printf(bio_err,"\n");
182         BIO_printf(bio_err," -host host     - use -connect instead\n");
183         BIO_printf(bio_err," -port port     - use -connect instead\n");
184         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
185
186         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
187         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
188         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
189         BIO_printf(bio_err,"                 not specified but cert file is.\n");
190         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
191         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
192         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
193         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
194         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
195         BIO_printf(bio_err," -debug        - extra output\n");
196         BIO_printf(bio_err," -msg          - Show protocol messages\n");
197         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
198         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
199 #ifdef FIONBIO
200         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
201 #endif
202         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
203         BIO_printf(bio_err," -quiet        - no s_client output\n");
204         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
205         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
206         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
207         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
208         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
209         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
210         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
211         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
212         BIO_printf(bio_err,"                 command to see what is available\n");
213         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
214         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
215         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
216         BIO_printf(bio_err,"                 only \"smtp\" is supported.\n");
217         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
218         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
219
220         }
221
222 int MAIN(int, char **);
223
224 int MAIN(int argc, char **argv)
225         {
226         int off=0;
227         SSL *con=NULL,*con2=NULL;
228         X509_STORE *store = NULL;
229         int s,k,width,state=0;
230         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
231         int cbuf_len,cbuf_off;
232         int sbuf_len,sbuf_off;
233         fd_set readfds,writefds;
234         short port=PORT;
235         int full_log=1;
236         char *host=SSL_HOST_NAME;
237         char *cert_file=NULL,*key_file=NULL;
238         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
239         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
240         int crlf=0;
241         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
242         SSL_CTX *ctx=NULL;
243         int ret=1,in_init=1,i,nbio_test=0;
244         int smtp_starttls = 0;
245         int prexit = 0, vflags = 0;
246         SSL_METHOD *meth=NULL;
247         BIO *sbio;
248         char *inrand=NULL;
249         char *engine_id=NULL;
250         ENGINE *e=NULL;
251 #ifdef OPENSSL_SYS_WINDOWS
252         struct timeval tv;
253 #endif
254
255 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
256         meth=SSLv23_client_method();
257 #elif !defined(OPENSSL_NO_SSL3)
258         meth=SSLv3_client_method();
259 #elif !defined(OPENSSL_NO_SSL2)
260         meth=SSLv2_client_method();
261 #endif
262
263         apps_startup();
264         c_Pause=0;
265         c_quiet=0;
266         c_ign_eof=0;
267         c_debug=0;
268         c_msg=0;
269         c_showcerts=0;
270
271         if (bio_err == NULL)
272                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
273
274         if (!load_config(bio_err, NULL))
275                 goto end;
276
277         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
278                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
279                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
280                 {
281                 BIO_printf(bio_err,"out of memory\n");
282                 goto end;
283                 }
284
285         verify_depth=0;
286         verify_error=X509_V_OK;
287 #ifdef FIONBIO
288         c_nbio=0;
289 #endif
290
291         argc--;
292         argv++;
293         while (argc >= 1)
294                 {
295                 if      (strcmp(*argv,"-host") == 0)
296                         {
297                         if (--argc < 1) goto bad;
298                         host= *(++argv);
299                         }
300                 else if (strcmp(*argv,"-port") == 0)
301                         {
302                         if (--argc < 1) goto bad;
303                         port=atoi(*(++argv));
304                         if (port == 0) goto bad;
305                         }
306                 else if (strcmp(*argv,"-connect") == 0)
307                         {
308                         if (--argc < 1) goto bad;
309                         if (!extract_host_port(*(++argv),&host,NULL,&port))
310                                 goto bad;
311                         }
312                 else if (strcmp(*argv,"-verify") == 0)
313                         {
314                         verify=SSL_VERIFY_PEER;
315                         if (--argc < 1) goto bad;
316                         verify_depth=atoi(*(++argv));
317                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
318                         }
319                 else if (strcmp(*argv,"-cert") == 0)
320                         {
321                         if (--argc < 1) goto bad;
322                         cert_file= *(++argv);
323                         }
324                 else if (strcmp(*argv,"-crl_check") == 0)
325                         vflags |= X509_V_FLAG_CRL_CHECK;
326                 else if (strcmp(*argv,"-crl_check_all") == 0)
327                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
328                 else if (strcmp(*argv,"-prexit") == 0)
329                         prexit=1;
330                 else if (strcmp(*argv,"-crlf") == 0)
331                         crlf=1;
332                 else if (strcmp(*argv,"-quiet") == 0)
333                         {
334                         c_quiet=1;
335                         c_ign_eof=1;
336                         }
337                 else if (strcmp(*argv,"-ign_eof") == 0)
338                         c_ign_eof=1;
339                 else if (strcmp(*argv,"-pause") == 0)
340                         c_Pause=1;
341                 else if (strcmp(*argv,"-debug") == 0)
342                         c_debug=1;
343                 else if (strcmp(*argv,"-msg") == 0)
344                         c_msg=1;
345                 else if (strcmp(*argv,"-showcerts") == 0)
346                         c_showcerts=1;
347                 else if (strcmp(*argv,"-nbio_test") == 0)
348                         nbio_test=1;
349                 else if (strcmp(*argv,"-state") == 0)
350                         state=1;
351 #ifndef OPENSSL_NO_SSL2
352                 else if (strcmp(*argv,"-ssl2") == 0)
353                         meth=SSLv2_client_method();
354 #endif
355 #ifndef OPENSSL_NO_SSL3
356                 else if (strcmp(*argv,"-ssl3") == 0)
357                         meth=SSLv3_client_method();
358 #endif
359 #ifndef OPENSSL_NO_TLS1
360                 else if (strcmp(*argv,"-tls1") == 0)
361                         meth=TLSv1_client_method();
362 #endif
363                 else if (strcmp(*argv,"-bugs") == 0)
364                         bugs=1;
365                 else if (strcmp(*argv,"-key") == 0)
366                         {
367                         if (--argc < 1) goto bad;
368                         key_file= *(++argv);
369                         }
370                 else if (strcmp(*argv,"-reconnect") == 0)
371                         {
372                         reconnect=5;
373                         }
374                 else if (strcmp(*argv,"-CApath") == 0)
375                         {
376                         if (--argc < 1) goto bad;
377                         CApath= *(++argv);
378                         }
379                 else if (strcmp(*argv,"-CAfile") == 0)
380                         {
381                         if (--argc < 1) goto bad;
382                         CAfile= *(++argv);
383                         }
384                 else if (strcmp(*argv,"-no_tls1") == 0)
385                         off|=SSL_OP_NO_TLSv1;
386                 else if (strcmp(*argv,"-no_ssl3") == 0)
387                         off|=SSL_OP_NO_SSLv3;
388                 else if (strcmp(*argv,"-no_ssl2") == 0)
389                         off|=SSL_OP_NO_SSLv2;
390                 else if (strcmp(*argv,"-serverpref") == 0)
391                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
392                 else if (strcmp(*argv,"-cipher") == 0)
393                         {
394                         if (--argc < 1) goto bad;
395                         cipher= *(++argv);
396                         }
397 #ifdef FIONBIO
398                 else if (strcmp(*argv,"-nbio") == 0)
399                         { c_nbio=1; }
400 #endif
401                 else if (strcmp(*argv,"-starttls") == 0)
402                         {
403                         if (--argc < 1) goto bad;
404                         ++argv;
405                         if (strcmp(*argv,"smtp") == 0)
406                                 smtp_starttls = 1;
407                         else
408                                 goto bad;
409                         }
410                 else if (strcmp(*argv,"-engine") == 0)
411                         {
412                         if (--argc < 1) goto bad;
413                         engine_id = *(++argv);
414                         }
415                 else if (strcmp(*argv,"-rand") == 0)
416                         {
417                         if (--argc < 1) goto bad;
418                         inrand= *(++argv);
419                         }
420                 else
421                         {
422                         BIO_printf(bio_err,"unknown option %s\n",*argv);
423                         badop=1;
424                         break;
425                         }
426                 argc--;
427                 argv++;
428                 }
429         if (badop)
430                 {
431 bad:
432                 sc_usage();
433                 goto end;
434                 }
435
436         OpenSSL_add_ssl_algorithms();
437         SSL_load_error_strings();
438
439         e = setup_engine(bio_err, engine_id, 1);
440
441         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
442                 && !RAND_status())
443                 {
444                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
445                 }
446         if (inrand != NULL)
447                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
448                         app_RAND_load_files(inrand));
449
450         if (bio_c_out == NULL)
451                 {
452                 if (c_quiet && !c_debug && !c_msg)
453                         {
454                         bio_c_out=BIO_new(BIO_s_null());
455                         }
456                 else
457                         {
458                         if (bio_c_out == NULL)
459                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
460                         }
461                 }
462
463         ctx=SSL_CTX_new(meth);
464         if (ctx == NULL)
465                 {
466                 ERR_print_errors(bio_err);
467                 goto end;
468                 }
469
470         if (bugs)
471                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
472         else
473                 SSL_CTX_set_options(ctx,off);
474
475         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
476         if (cipher != NULL)
477                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
478                 BIO_printf(bio_err,"error setting cipher list\n");
479                 ERR_print_errors(bio_err);
480                 goto end;
481         }
482 #if 0
483         else
484                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
485 #endif
486
487         SSL_CTX_set_verify(ctx,verify,verify_callback);
488         if (!set_cert_stuff(ctx,cert_file,key_file))
489                 goto end;
490
491         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
492                 (!SSL_CTX_set_default_verify_paths(ctx)))
493                 {
494                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
495                 ERR_print_errors(bio_err);
496                 /* goto end; */
497                 }
498
499         store = SSL_CTX_get_cert_store(ctx);
500         X509_STORE_set_flags(store, vflags);
501
502         con=SSL_new(ctx);
503 #ifndef OPENSSL_NO_KRB5
504         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
505                 {
506                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
507                 }
508 #endif  /* OPENSSL_NO_KRB5  */
509 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
510
511 re_start:
512
513         if (init_client(&s,host,port) == 0)
514                 {
515                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
516                 SHUTDOWN(s);
517                 goto end;
518                 }
519         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
520
521 #ifdef FIONBIO
522         if (c_nbio)
523                 {
524                 unsigned long l=1;
525                 BIO_printf(bio_c_out,"turning on non blocking io\n");
526                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
527                         {
528                         ERR_print_errors(bio_err);
529                         goto end;
530                         }
531                 }
532 #endif                                              
533         if (c_Pause & 0x01) con->debug=1;
534         sbio=BIO_new_socket(s,BIO_NOCLOSE);
535
536         if (nbio_test)
537                 {
538                 BIO *test;
539
540                 test=BIO_new(BIO_f_nbio_test());
541                 sbio=BIO_push(test,sbio);
542                 }
543
544         if (c_debug)
545                 {
546                 con->debug=1;
547                 BIO_set_callback(sbio,bio_dump_cb);
548                 BIO_set_callback_arg(sbio,bio_c_out);
549                 }
550         if (c_msg)
551                 {
552                 SSL_set_msg_callback(con, msg_cb);
553                 SSL_set_msg_callback_arg(con, bio_c_out);
554                 }
555
556         SSL_set_bio(con,sbio,sbio);
557         SSL_set_connect_state(con);
558
559         /* ok, lets connect */
560         width=SSL_get_fd(con)+1;
561
562         read_tty=1;
563         write_tty=0;
564         tty_on=0;
565         read_ssl=1;
566         write_ssl=1;
567         
568         cbuf_len=0;
569         cbuf_off=0;
570         sbuf_len=0;
571         sbuf_off=0;
572
573         /* This is an ugly hack that does a lot of assumptions */
574         if (smtp_starttls)
575                 {
576                 BIO_read(sbio,mbuf,BUFSIZZ);
577                 BIO_printf(sbio,"STARTTLS\r\n");
578                 BIO_read(sbio,sbuf,BUFSIZZ);
579                 }
580
581         for (;;)
582                 {
583                 FD_ZERO(&readfds);
584                 FD_ZERO(&writefds);
585
586                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
587                         {
588                         in_init=1;
589                         tty_on=0;
590                         }
591                 else
592                         {
593                         tty_on=1;
594                         if (in_init)
595                                 {
596                                 in_init=0;
597                                 print_stuff(bio_c_out,con,full_log);
598                                 if (full_log > 0) full_log--;
599
600                                 if (smtp_starttls)
601                                         {
602                                         BIO_printf(bio_err,"%s",mbuf);
603                                         /* We don't need to know any more */
604                                         smtp_starttls = 0;
605                                         }
606
607                                 if (reconnect)
608                                         {
609                                         reconnect--;
610                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
611                                         SSL_shutdown(con);
612                                         SSL_set_connect_state(con);
613                                         SHUTDOWN(SSL_get_fd(con));
614                                         goto re_start;
615                                         }
616                                 }
617                         }
618
619                 ssl_pending = read_ssl && SSL_pending(con);
620
621                 if (!ssl_pending)
622                         {
623 #ifndef OPENSSL_SYS_WINDOWS
624                         if (tty_on)
625                                 {
626                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
627                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
628                                 }
629                         if (read_ssl)
630                                 FD_SET(SSL_get_fd(con),&readfds);
631                         if (write_ssl)
632                                 FD_SET(SSL_get_fd(con),&writefds);
633 #else
634                         if(!tty_on || !write_tty) {
635                                 if (read_ssl)
636                                         FD_SET(SSL_get_fd(con),&readfds);
637                                 if (write_ssl)
638                                         FD_SET(SSL_get_fd(con),&writefds);
639                         }
640 #endif
641 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
642                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
643
644                         /* Note: under VMS with SOCKETSHR the second parameter
645                          * is currently of type (int *) whereas under other
646                          * systems it is (void *) if you don't have a cast it
647                          * will choke the compiler: if you do have a cast then
648                          * you can either go for (int *) or (void *).
649                          */
650 #ifdef OPENSSL_SYS_WINDOWS
651                         /* Under Windows we make the assumption that we can
652                          * always write to the tty: therefore if we need to
653                          * write to the tty we just fall through. Otherwise
654                          * we timeout the select every second and see if there
655                          * are any keypresses. Note: this is a hack, in a proper
656                          * Windows application we wouldn't do this.
657                          */
658                         i=0;
659                         if(!write_tty) {
660                                 if(read_tty) {
661                                         tv.tv_sec = 1;
662                                         tv.tv_usec = 0;
663                                         i=select(width,(void *)&readfds,(void *)&writefds,
664                                                  NULL,&tv);
665                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
666                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
667                                          NULL,NULL);
668                         }
669 #else
670                         i=select(width,(void *)&readfds,(void *)&writefds,
671                                  NULL,NULL);
672 #endif
673                         if ( i < 0)
674                                 {
675                                 BIO_printf(bio_err,"bad select %d\n",
676                                 get_last_socket_error());
677                                 goto shut;
678                                 /* goto end; */
679                                 }
680                         }
681
682                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
683                         {
684                         k=SSL_write(con,&(cbuf[cbuf_off]),
685                                 (unsigned int)cbuf_len);
686                         switch (SSL_get_error(con,k))
687                                 {
688                         case SSL_ERROR_NONE:
689                                 cbuf_off+=k;
690                                 cbuf_len-=k;
691                                 if (k <= 0) goto end;
692                                 /* we have done a  write(con,NULL,0); */
693                                 if (cbuf_len <= 0)
694                                         {
695                                         read_tty=1;
696                                         write_ssl=0;
697                                         }
698                                 else /* if (cbuf_len > 0) */
699                                         {
700                                         read_tty=0;
701                                         write_ssl=1;
702                                         }
703                                 break;
704                         case SSL_ERROR_WANT_WRITE:
705                                 BIO_printf(bio_c_out,"write W BLOCK\n");
706                                 write_ssl=1;
707                                 read_tty=0;
708                                 break;
709                         case SSL_ERROR_WANT_READ:
710                                 BIO_printf(bio_c_out,"write R BLOCK\n");
711                                 write_tty=0;
712                                 read_ssl=1;
713                                 write_ssl=0;
714                                 break;
715                         case SSL_ERROR_WANT_X509_LOOKUP:
716                                 BIO_printf(bio_c_out,"write X BLOCK\n");
717                                 break;
718                         case SSL_ERROR_ZERO_RETURN:
719                                 if (cbuf_len != 0)
720                                         {
721                                         BIO_printf(bio_c_out,"shutdown\n");
722                                         goto shut;
723                                         }
724                                 else
725                                         {
726                                         read_tty=1;
727                                         write_ssl=0;
728                                         break;
729                                         }
730                                 
731                         case SSL_ERROR_SYSCALL:
732                                 if ((k != 0) || (cbuf_len != 0))
733                                         {
734                                         BIO_printf(bio_err,"write:errno=%d\n",
735                                                 get_last_socket_error());
736                                         goto shut;
737                                         }
738                                 else
739                                         {
740                                         read_tty=1;
741                                         write_ssl=0;
742                                         }
743                                 break;
744                         case SSL_ERROR_SSL:
745                                 ERR_print_errors(bio_err);
746                                 goto shut;
747                                 }
748                         }
749 #ifdef OPENSSL_SYS_WINDOWS
750                 /* Assume Windows can always write */
751                 else if (!ssl_pending && write_tty)
752 #else
753                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
754 #endif
755                         {
756 #ifdef CHARSET_EBCDIC
757                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
758 #endif
759                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
760
761                         if (i <= 0)
762                                 {
763                                 BIO_printf(bio_c_out,"DONE\n");
764                                 goto shut;
765                                 /* goto end; */
766                                 }
767
768                         sbuf_len-=i;;
769                         sbuf_off+=i;
770                         if (sbuf_len <= 0)
771                                 {
772                                 read_ssl=1;
773                                 write_tty=0;
774                                 }
775                         }
776                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
777                         {
778 #ifdef RENEG
779 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
780 #endif
781 #if 1
782                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
783 #else
784 /* Demo for pending and peek :-) */
785                         k=SSL_read(con,sbuf,16);
786 { char zbuf[10240]; 
787 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
788 }
789 #endif
790
791                         switch (SSL_get_error(con,k))
792                                 {
793                         case SSL_ERROR_NONE:
794                                 if (k <= 0)
795                                         goto end;
796                                 sbuf_off=0;
797                                 sbuf_len=k;
798
799                                 read_ssl=0;
800                                 write_tty=1;
801                                 break;
802                         case SSL_ERROR_WANT_WRITE:
803                                 BIO_printf(bio_c_out,"read W BLOCK\n");
804                                 write_ssl=1;
805                                 read_tty=0;
806                                 break;
807                         case SSL_ERROR_WANT_READ:
808                                 BIO_printf(bio_c_out,"read R BLOCK\n");
809                                 write_tty=0;
810                                 read_ssl=1;
811                                 if ((read_tty == 0) && (write_ssl == 0))
812                                         write_ssl=1;
813                                 break;
814                         case SSL_ERROR_WANT_X509_LOOKUP:
815                                 BIO_printf(bio_c_out,"read X BLOCK\n");
816                                 break;
817                         case SSL_ERROR_SYSCALL:
818                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
819                                 goto shut;
820                         case SSL_ERROR_ZERO_RETURN:
821                                 BIO_printf(bio_c_out,"closed\n");
822                                 goto shut;
823                         case SSL_ERROR_SSL:
824                                 ERR_print_errors(bio_err);
825                                 goto shut;
826                                 /* break; */
827                                 }
828                         }
829
830 #ifdef OPENSSL_SYS_WINDOWS
831                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
832 #else
833                 else if (FD_ISSET(fileno(stdin),&readfds))
834 #endif
835                         {
836                         if (crlf)
837                                 {
838                                 int j, lf_num;
839
840                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
841                                 lf_num = 0;
842                                 /* both loops are skipped when i <= 0 */
843                                 for (j = 0; j < i; j++)
844                                         if (cbuf[j] == '\n')
845                                                 lf_num++;
846                                 for (j = i-1; j >= 0; j--)
847                                         {
848                                         cbuf[j+lf_num] = cbuf[j];
849                                         if (cbuf[j] == '\n')
850                                                 {
851                                                 lf_num--;
852                                                 i++;
853                                                 cbuf[j+lf_num] = '\r';
854                                                 }
855                                         }
856                                 assert(lf_num == 0);
857                                 }
858                         else
859                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
860
861                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
862                                 {
863                                 BIO_printf(bio_err,"DONE\n");
864                                 goto shut;
865                                 }
866
867                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
868                                 {
869                                 BIO_printf(bio_err,"RENEGOTIATING\n");
870                                 SSL_renegotiate(con);
871                                 cbuf_len=0;
872                                 }
873                         else
874                                 {
875                                 cbuf_len=i;
876                                 cbuf_off=0;
877 #ifdef CHARSET_EBCDIC
878                                 ebcdic2ascii(cbuf, cbuf, i);
879 #endif
880                                 }
881
882                         write_ssl=1;
883                         read_tty=0;
884                         }
885                 }
886 shut:
887         SSL_shutdown(con);
888         SHUTDOWN(SSL_get_fd(con));
889         ret=0;
890 end:
891         if(prexit) print_stuff(bio_c_out,con,1);
892         if (con != NULL) SSL_free(con);
893         if (con2 != NULL) SSL_free(con2);
894         if (ctx != NULL) SSL_CTX_free(ctx);
895         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
896         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
897         if (mbuf != NULL) { memset(mbuf,0,BUFSIZZ); OPENSSL_free(mbuf); }
898         if (bio_c_out != NULL)
899                 {
900                 BIO_free(bio_c_out);
901                 bio_c_out=NULL;
902                 }
903         apps_shutdown();
904         EXIT(ret);
905         }
906
907
908 static void print_stuff(BIO *bio, SSL *s, int full)
909         {
910         X509 *peer=NULL;
911         char *p;
912         static char *space="                ";
913         char buf[BUFSIZ];
914         STACK_OF(X509) *sk;
915         STACK_OF(X509_NAME) *sk2;
916         SSL_CIPHER *c;
917         X509_NAME *xn;
918         int j,i;
919
920         if (full)
921                 {
922                 int got_a_chain = 0;
923
924                 sk=SSL_get_peer_cert_chain(s);
925                 if (sk != NULL)
926                         {
927                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
928
929                         BIO_printf(bio,"---\nCertificate chain\n");
930                         for (i=0; i<sk_X509_num(sk); i++)
931                                 {
932                                 X509_NAME_oneline(X509_get_subject_name(
933                                         sk_X509_value(sk,i)),buf,sizeof buf);
934                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
935                                 X509_NAME_oneline(X509_get_issuer_name(
936                                         sk_X509_value(sk,i)),buf,sizeof buf);
937                                 BIO_printf(bio,"   i:%s\n",buf);
938                                 if (c_showcerts)
939                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
940                                 }
941                         }
942
943                 BIO_printf(bio,"---\n");
944                 peer=SSL_get_peer_certificate(s);
945                 if (peer != NULL)
946                         {
947                         BIO_printf(bio,"Server certificate\n");
948                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
949                                 PEM_write_bio_X509(bio,peer);
950                         X509_NAME_oneline(X509_get_subject_name(peer),
951                                 buf,sizeof buf);
952                         BIO_printf(bio,"subject=%s\n",buf);
953                         X509_NAME_oneline(X509_get_issuer_name(peer),
954                                 buf,sizeof buf);
955                         BIO_printf(bio,"issuer=%s\n",buf);
956                         }
957                 else
958                         BIO_printf(bio,"no peer certificate available\n");
959
960                 sk2=SSL_get_client_CA_list(s);
961                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
962                         {
963                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
964                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
965                                 {
966                                 xn=sk_X509_NAME_value(sk2,i);
967                                 X509_NAME_oneline(xn,buf,sizeof(buf));
968                                 BIO_write(bio,buf,strlen(buf));
969                                 BIO_write(bio,"\n",1);
970                                 }
971                         }
972                 else
973                         {
974                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
975                         }
976                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
977                 if (p != NULL)
978                         {
979                         /* This works only for SSL 2.  In later protocol
980                          * versions, the client does not know what other
981                          * ciphers (in addition to the one to be used
982                          * in the current connection) the server supports. */
983
984                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
985                         j=i=0;
986                         while (*p)
987                                 {
988                                 if (*p == ':')
989                                         {
990                                         BIO_write(bio,space,15-j%25);
991                                         i++;
992                                         j=0;
993                                         BIO_write(bio,((i%3)?" ":"\n"),1);
994                                         }
995                                 else
996                                         {
997                                         BIO_write(bio,p,1);
998                                         j++;
999                                         }
1000                                 p++;
1001                                 }
1002                         BIO_write(bio,"\n",1);
1003                         }
1004
1005                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1006                         BIO_number_read(SSL_get_rbio(s)),
1007                         BIO_number_written(SSL_get_wbio(s)));
1008                 }
1009         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1010         c=SSL_get_current_cipher(s);
1011         BIO_printf(bio,"%s, Cipher is %s\n",
1012                 SSL_CIPHER_get_version(c),
1013                 SSL_CIPHER_get_name(c));
1014         if (peer != NULL) {
1015                 EVP_PKEY *pktmp;
1016                 pktmp = X509_get_pubkey(peer);
1017                 BIO_printf(bio,"Server public key is %d bit\n",
1018                                                          EVP_PKEY_bits(pktmp));
1019                 EVP_PKEY_free(pktmp);
1020         }
1021         SSL_SESSION_print(bio,SSL_get_session(s));
1022         BIO_printf(bio,"---\n");
1023         if (peer != NULL)
1024                 X509_free(peer);
1025         /* flush, or debugging output gets mixed with http response */
1026         BIO_flush(bio);
1027         }
1028