1 /* $OpenBSD: s_client.c,v 1.64 2023/12/29 12:15:49 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111 /* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
113 *
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
116 * license.
117 *
118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
120 * support (see RFC 4279) to OpenSSL.
121 *
122 * No patent licenses or other rights except those expressly stated in
123 * the OpenSSL open source license shall be deemed granted or received
124 * expressly, by implication, estoppel, or otherwise.
125 *
126 * No assurances are provided by Nokia that the Contribution does not
127 * infringe the patent or other intellectual property rights of any third
128 * party or that the license provides you with all the necessary rights
129 * to make use of the Contribution.
130 *
131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
135 * OTHERWISE.
136 */
137
138 #include <sys/types.h>
139 #include <sys/socket.h>
140
141 #include <netinet/in.h>
142
143 #include <assert.h>
144 #include <ctype.h>
145 #include <limits.h>
146 #include <netdb.h>
147 #include <stdio.h>
148 #include <stdlib.h>
149 #include <string.h>
150 #include <unistd.h>
151 #include <poll.h>
152
153 #include "apps.h"
154
155 #include <openssl/bn.h>
156 #include <openssl/err.h>
157 #include <openssl/ocsp.h>
158 #include <openssl/pem.h>
159 #include <openssl/ssl.h>
160 #include <openssl/x509.h>
161
162 #include "s_apps.h"
163 #include "timeouts.h"
164
165 /*#define SSL_HOST_NAME "www.netscape.com" */
166 /*#define SSL_HOST_NAME "193.118.187.102" */
167 #define SSL_HOST_NAME "localhost"
168
169 /*#define TEST_CERT "client.pem" *//* no default cert. */
170
171 #define BUFSIZZ 1024*8
172
173 static void sc_usage(void);
174 static void print_stuff(BIO *berr, SSL *con, int full);
175 static int ocsp_resp_cb(SSL *s, void *arg);
176 static int ssl_servername_cb(SSL *s, int *ad, void *arg);
177
178 enum {
179 PROTO_OFF = 0,
180 PROTO_SMTP,
181 PROTO_LMTP,
182 PROTO_POP3,
183 PROTO_IMAP,
184 PROTO_FTP,
185 PROTO_XMPP,
186 };
187
188 /* This is a context that we pass to callbacks */
189 typedef struct tlsextctx_st {
190 BIO *biodebug;
191 int ack;
192 } tlsextctx;
193
194 static struct {
195 int af;
196 char *alpn_in;
197 int bugs;
198 char *CAfile;
199 char *CApath;
200 char *cert_file;
201 int cert_format;
202 char *cipher;
203 unsigned int clr;
204 char *connect;
205 int crlf;
206 int debug;
207 int enable_timeouts;
208 const char *errstr;
209 char *groups_in;
210 char *host;
211 int ign_eof;
212 char *key_file;
213 int key_format;
214 char *keymatexportlabel;
215 int keymatexportlen;
216 uint16_t max_version;
217 uint16_t min_version;
218 const SSL_METHOD *meth;
219 int msg;
220 int nbio;
221 int nbio_test;
222 int no_servername;
223 char *npn_in;
224 unsigned int off;
225 char *passarg;
226 int peekaboo;
227 char *port;
228 int prexit;
229 char *proxy;
230 int quiet;
231 int reconnect;
232 char *servername;
233 char *sess_in;
234 char *sess_out;
235 int showcerts;
236 int socket_type;
237 long socket_mtu;
238 #ifndef OPENSSL_NO_SRTP
239 char *srtp_profiles;
240 #endif
241 int starttls_proto;
242 int state;
243 int status_req;
244 int tlsextdebug;
245 int verify;
246 X509_VERIFY_PARAM *vpm;
247 char *xmpphost;
248 } cfg;
249
250 static int
s_client_opt_keymatexportlen(char * arg)251 s_client_opt_keymatexportlen(char *arg)
252 {
253 cfg.keymatexportlen = strtonum(arg, 1, INT_MAX,
254 &cfg.errstr);
255 if (cfg.errstr != NULL) {
256 BIO_printf(bio_err, "invalid argument %s: %s\n",
257 arg, cfg.errstr);
258 return (1);
259 }
260 return (0);
261 }
262
263 #ifndef OPENSSL_NO_DTLS
264 static int
s_client_opt_mtu(char * arg)265 s_client_opt_mtu(char *arg)
266 {
267 cfg.socket_mtu = strtonum(arg, 0, LONG_MAX,
268 &cfg.errstr);
269 if (cfg.errstr != NULL) {
270 BIO_printf(bio_err, "invalid argument %s: %s\n",
271 arg, cfg.errstr);
272 return (1);
273 }
274 return (0);
275 }
276 #endif
277
278 static int
s_client_opt_port(char * arg)279 s_client_opt_port(char *arg)
280 {
281 if (*arg == '\0')
282 return (1);
283
284 cfg.port = arg;
285 return (0);
286 }
287
288 #ifndef OPENSSL_NO_DTLS
289 static int
s_client_opt_protocol_version_dtls(void)290 s_client_opt_protocol_version_dtls(void)
291 {
292 cfg.meth = DTLS_client_method();
293 cfg.socket_type = SOCK_DGRAM;
294 return (0);
295 }
296 #endif
297
298 #ifndef OPENSSL_NO_DTLS1_2
299 static int
s_client_opt_protocol_version_dtls1_2(void)300 s_client_opt_protocol_version_dtls1_2(void)
301 {
302 cfg.meth = DTLS_client_method();
303 cfg.min_version = DTLS1_2_VERSION;
304 cfg.max_version = DTLS1_2_VERSION;
305 cfg.socket_type = SOCK_DGRAM;
306 return (0);
307 }
308 #endif
309
310 static int
s_client_opt_protocol_version_tls1_2(void)311 s_client_opt_protocol_version_tls1_2(void)
312 {
313 cfg.min_version = TLS1_2_VERSION;
314 cfg.max_version = TLS1_2_VERSION;
315 return (0);
316 }
317
318 static int
s_client_opt_protocol_version_tls1_3(void)319 s_client_opt_protocol_version_tls1_3(void)
320 {
321 cfg.min_version = TLS1_3_VERSION;
322 cfg.max_version = TLS1_3_VERSION;
323 return (0);
324 }
325
326 static int
s_client_opt_quiet(void)327 s_client_opt_quiet(void)
328 {
329 cfg.quiet = 1;
330 cfg.ign_eof = 1;
331 return (0);
332 }
333
334 static int
s_client_opt_starttls(char * arg)335 s_client_opt_starttls(char *arg)
336 {
337 if (strcmp(arg, "smtp") == 0)
338 cfg.starttls_proto = PROTO_SMTP;
339 else if (strcmp(arg, "lmtp") == 0)
340 cfg.starttls_proto = PROTO_LMTP;
341 else if (strcmp(arg, "pop3") == 0)
342 cfg.starttls_proto = PROTO_POP3;
343 else if (strcmp(arg, "imap") == 0)
344 cfg.starttls_proto = PROTO_IMAP;
345 else if (strcmp(arg, "ftp") == 0)
346 cfg.starttls_proto = PROTO_FTP;
347 else if (strcmp(arg, "xmpp") == 0)
348 cfg.starttls_proto = PROTO_XMPP;
349 else
350 return (1);
351 return (0);
352 }
353
354 static int
s_client_opt_verify(char * arg)355 s_client_opt_verify(char *arg)
356 {
357 cfg.verify = SSL_VERIFY_PEER;
358
359 verify_depth = strtonum(arg, 0, INT_MAX, &cfg.errstr);
360 if (cfg.errstr != NULL) {
361 BIO_printf(bio_err, "invalid argument %s: %s\n",
362 arg, cfg.errstr);
363 return (1);
364 }
365 BIO_printf(bio_err, "verify depth is %d\n", verify_depth);
366 return (0);
367 }
368
369 static int
s_client_opt_verify_param(int argc,char ** argv,int * argsused)370 s_client_opt_verify_param(int argc, char **argv, int *argsused)
371 {
372 char **pargs = argv;
373 int pargc = argc;
374 int badarg = 0;
375
376 if (!args_verify(&pargs, &pargc, &badarg, bio_err,
377 &cfg.vpm)) {
378 BIO_printf(bio_err, "unknown option %s\n", *argv);
379 return (1);
380 }
381 if (badarg)
382 return (1);
383
384 *argsused = argc - pargc;
385 return (0);
386 }
387
388 static const struct option s_client_options[] = {
389 {
390 .name = "4",
391 .desc = "Use IPv4 only",
392 .type = OPTION_VALUE,
393 .opt.value = &cfg.af,
394 .value = AF_INET,
395 },
396 {
397 .name = "6",
398 .desc = "Use IPv6 only",
399 .type = OPTION_VALUE,
400 .opt.value = &cfg.af,
401 .value = AF_INET6,
402 },
403 {
404 .name = "alpn",
405 .argname = "protocols",
406 .desc = "Set the advertised protocols for ALPN"
407 " (comma-separated list)",
408 .type = OPTION_ARG,
409 .opt.arg = &cfg.alpn_in,
410 },
411 {
412 .name = "bugs",
413 .desc = "Enable various workarounds for buggy implementations",
414 .type = OPTION_FLAG,
415 .opt.flag = &cfg.bugs,
416 },
417 {
418 .name = "CAfile",
419 .argname = "file",
420 .desc = "PEM format file of CA certificates",
421 .type = OPTION_ARG,
422 .opt.arg = &cfg.CAfile,
423 },
424 {
425 .name = "CApath",
426 .argname = "directory",
427 .desc = "PEM format directory of CA certificates",
428 .type = OPTION_ARG,
429 .opt.arg = &cfg.CApath,
430 },
431 {
432 .name = "cert",
433 .argname = "file",
434 .desc = "Certificate file to use, PEM format assumed",
435 .type = OPTION_ARG,
436 .opt.arg = &cfg.cert_file,
437 },
438 {
439 .name = "certform",
440 .argname = "fmt",
441 .desc = "Certificate format (PEM or DER) PEM default",
442 .type = OPTION_ARG_FORMAT,
443 .opt.value = &cfg.cert_format,
444 },
445 {
446 .name = "cipher",
447 .argname = "cipherlist",
448 .desc = "Preferred cipher to use (see 'openssl ciphers')",
449 .type = OPTION_ARG,
450 .opt.arg = &cfg.cipher,
451 },
452 {
453 .name = "connect",
454 .argname = "host:port",
455 .desc = "Who to connect to (default is localhost:4433)",
456 .type = OPTION_ARG,
457 .opt.arg = &cfg.connect,
458 },
459 {
460 .name = "crlf",
461 .desc = "Convert LF from terminal into CRLF",
462 .type = OPTION_FLAG,
463 .opt.flag = &cfg.crlf,
464 },
465 {
466 .name = "debug",
467 .desc = "Print extensive debugging information",
468 .type = OPTION_FLAG,
469 .opt.flag = &cfg.debug,
470 },
471 #ifndef OPENSSL_NO_DTLS
472 {
473 .name = "dtls",
474 .desc = "Use any version of DTLS",
475 .type = OPTION_FUNC,
476 .opt.func = s_client_opt_protocol_version_dtls,
477 },
478 #endif
479 #ifndef OPENSSL_NO_DTLS1_2
480 {
481 .name = "dtls1_2",
482 .desc = "Just use DTLSv1.2",
483 .type = OPTION_FUNC,
484 .opt.func = s_client_opt_protocol_version_dtls1_2,
485 },
486 #endif
487 {
488 .name = "groups",
489 .argname = "list",
490 .desc = "Specify EC groups (colon-separated list)",
491 .type = OPTION_ARG,
492 .opt.arg = &cfg.groups_in,
493 },
494 {
495 .name = "host",
496 .argname = "host",
497 .desc = "Use -connect instead",
498 .type = OPTION_ARG,
499 .opt.arg = &cfg.host,
500 },
501 {
502 .name = "ign_eof",
503 .desc = "Ignore input EOF (default when -quiet)",
504 .type = OPTION_VALUE,
505 .opt.value = &cfg.ign_eof,
506 .value = 1,
507 },
508 {
509 .name = "key",
510 .argname = "file",
511 .desc = "Private key file to use, if not, -cert file is used",
512 .type = OPTION_ARG,
513 .opt.arg = &cfg.key_file,
514 },
515 {
516 .name = "keyform",
517 .argname = "fmt",
518 .desc = "Key format (PEM or DER) PEM default",
519 .type = OPTION_ARG_FORMAT,
520 .opt.value = &cfg.key_format,
521 },
522 {
523 .name = "keymatexport",
524 .argname = "label",
525 .desc = "Export keying material using label",
526 .type = OPTION_ARG,
527 .opt.arg = &cfg.keymatexportlabel,
528 },
529 {
530 .name = "keymatexportlen",
531 .argname = "len",
532 .desc = "Export len bytes of keying material (default 20)",
533 .type = OPTION_ARG_FUNC,
534 .opt.argfunc = s_client_opt_keymatexportlen,
535 },
536 {
537 .name = "legacy_renegotiation",
538 .type = OPTION_DISCARD,
539 },
540 {
541 .name = "legacy_server_connect",
542 .desc = "Allow initial connection to servers that don't support RI",
543 .type = OPTION_VALUE_OR,
544 .opt.value = &cfg.off,
545 .value = SSL_OP_LEGACY_SERVER_CONNECT,
546 },
547 {
548 .name = "msg",
549 .desc = "Show all protocol messages with hex dump",
550 .type = OPTION_FLAG,
551 .opt.flag = &cfg.msg,
552 },
553 #ifndef OPENSSL_NO_DTLS
554 {
555 .name = "mtu",
556 .argname = "mtu",
557 .desc = "Set the link layer MTU on DTLS connections",
558 .type = OPTION_ARG_FUNC,
559 .opt.argfunc = s_client_opt_mtu,
560 },
561 #endif
562 {
563 .name = "nbio",
564 .desc = "Turn on non-blocking I/O",
565 .type = OPTION_FLAG,
566 .opt.flag = &cfg.nbio,
567 },
568 {
569 .name = "nbio_test",
570 .desc = "Test non-blocking I/O",
571 .type = OPTION_FLAG,
572 .opt.flag = &cfg.nbio_test,
573 },
574 {
575 .name = "nextprotoneg",
576 .argname = "protocols",
577 .type = OPTION_ARG,
578 .opt.arg = &cfg.npn_in, /* Ignored. */
579 },
580 {
581 .name = "no_comp",
582 .type = OPTION_VALUE_OR,
583 .opt.value = &cfg.off,
584 .value = SSL_OP_NO_COMPRESSION,
585 },
586 {
587 .name = "no_ign_eof",
588 .desc = "Don't ignore input EOF",
589 .type = OPTION_VALUE,
590 .opt.value = &cfg.ign_eof,
591 .value = 0,
592 },
593 {
594 .name = "no_legacy_server_connect",
595 .desc = "Disallow initial connection to servers that don't support RI",
596 .type = OPTION_VALUE_OR,
597 .opt.value = &cfg.clr,
598 .value = SSL_OP_LEGACY_SERVER_CONNECT,
599 },
600 {
601 .name = "no_servername",
602 .desc = "Do not send a Server Name Indication (SNI) extension",
603 .type = OPTION_FLAG,
604 .opt.value = &cfg.no_servername,
605 },
606 {
607 .name = "no_ssl2",
608 .type = OPTION_VALUE_OR,
609 .opt.value = &cfg.off,
610 .value = SSL_OP_NO_SSLv2,
611 },
612 {
613 .name = "no_ssl3",
614 .type = OPTION_VALUE_OR,
615 .opt.value = &cfg.off,
616 .value = SSL_OP_NO_SSLv3,
617 },
618 {
619 .name = "no_ticket",
620 .desc = "Disable use of RFC4507 session ticket support",
621 .type = OPTION_VALUE_OR,
622 .opt.value = &cfg.off,
623 .value = SSL_OP_NO_TICKET,
624 },
625 {
626 .name = "no_tls1",
627 .type = OPTION_DISCARD,
628 },
629 {
630 .name = "no_tls1_1",
631 .type = OPTION_DISCARD,
632 },
633 {
634 .name = "no_tls1_2",
635 .desc = "Disable the use of TLSv1.2",
636 .type = OPTION_VALUE_OR,
637 .opt.value = &cfg.off,
638 .value = SSL_OP_NO_TLSv1_2,
639 },
640 {
641 .name = "no_tls1_3",
642 .desc = "Disable the use of TLSv1.3",
643 .type = OPTION_VALUE_OR,
644 .opt.value = &cfg.off,
645 .value = SSL_OP_NO_TLSv1_3,
646 },
647 {
648 .name = "noservername",
649 .type = OPTION_FLAG,
650 .opt.value = &cfg.no_servername,
651 },
652 {
653 .name = "pass",
654 .argname = "arg",
655 .desc = "Private key file pass phrase source",
656 .type = OPTION_ARG,
657 .opt.arg = &cfg.passarg,
658 },
659 {
660 .name = "pause",
661 .type = OPTION_DISCARD,
662 },
663 {
664 .name = "peekaboo",
665 .type = OPTION_FLAG,
666 .opt.flag = &cfg.peekaboo,
667 },
668 {
669 .name = "port",
670 .argname = "port",
671 .desc = "Use -connect instead",
672 .type = OPTION_ARG_FUNC,
673 .opt.argfunc = s_client_opt_port,
674 },
675 {
676 .name = "prexit",
677 .desc = "Print session information when the program exits",
678 .type = OPTION_FLAG,
679 .opt.flag = &cfg.prexit,
680 },
681 {
682 .name = "proxy",
683 .argname = "host:port",
684 .desc = "Connect to http proxy",
685 .type = OPTION_ARG,
686 .opt.arg = &cfg.proxy,
687 },
688 {
689 .name = "quiet",
690 .desc = "Inhibit printing of session and certificate info",
691 .type = OPTION_FUNC,
692 .opt.func = s_client_opt_quiet,
693 },
694 {
695 .name = "reconnect",
696 .desc = "Drop and re-make the connection with the same Session-ID",
697 .type = OPTION_VALUE,
698 .opt.value = &cfg.reconnect,
699 .value = 5,
700 },
701 {
702 .name = "servername",
703 .argname = "name",
704 .desc = "Set TLS extension servername in ClientHello (SNI)",
705 .type = OPTION_ARG,
706 .opt.arg = &cfg.servername,
707 },
708 {
709 .name = "serverpref",
710 .desc = "Use server's cipher preferences",
711 .type = OPTION_VALUE_OR,
712 .opt.value = &cfg.off,
713 .value = SSL_OP_CIPHER_SERVER_PREFERENCE,
714 },
715 {
716 .name = "sess_in",
717 .argname = "file",
718 .desc = "File to read TLS session from",
719 .type = OPTION_ARG,
720 .opt.arg = &cfg.sess_in,
721 },
722 {
723 .name = "sess_out",
724 .argname = "file",
725 .desc = "File to write TLS session to",
726 .type = OPTION_ARG,
727 .opt.arg = &cfg.sess_out,
728 },
729 {
730 .name = "showcerts",
731 .desc = "Show all server certificates in the chain",
732 .type = OPTION_FLAG,
733 .opt.flag = &cfg.showcerts,
734 },
735 {
736 .name = "starttls",
737 .argname = "protocol",
738 .desc = "Use the STARTTLS command before starting TLS,\n"
739 "smtp, lmtp, pop3, imap, ftp and xmpp are supported.",
740 .type = OPTION_ARG_FUNC,
741 .opt.argfunc = s_client_opt_starttls,
742 },
743 {
744 .name = "state",
745 .desc = "Print the TLS session states",
746 .type = OPTION_FLAG,
747 .opt.flag = &cfg.state,
748 },
749 {
750 .name = "status",
751 .desc = "Send a certificate status request to the server (OCSP)",
752 .type = OPTION_FLAG,
753 .opt.flag = &cfg.status_req,
754 },
755 #ifndef OPENSSL_NO_DTLS
756 {
757 .name = "timeout",
758 .desc = "Enable send/receive timeout on DTLS connections",
759 .type = OPTION_FLAG,
760 .opt.flag = &cfg.enable_timeouts,
761 },
762 #endif
763 {
764 .name = "tls1_2",
765 .desc = "Just use TLSv1.2",
766 .type = OPTION_FUNC,
767 .opt.func = s_client_opt_protocol_version_tls1_2,
768 },
769 {
770 .name = "tls1_3",
771 .desc = "Just use TLSv1.3",
772 .type = OPTION_FUNC,
773 .opt.func = s_client_opt_protocol_version_tls1_3,
774 },
775 {
776 .name = "tlsextdebug",
777 .desc = "Hex dump of all TLS extensions received",
778 .type = OPTION_FLAG,
779 .opt.flag = &cfg.tlsextdebug,
780 },
781 #ifndef OPENSSL_NO_SRTP
782 {
783 .name = "use_srtp",
784 .argname = "profiles",
785 .desc = "Offer SRTP key management with a colon-separated profiles",
786 .type = OPTION_ARG,
787 .opt.arg = &cfg.srtp_profiles,
788 },
789 #endif
790 {
791 .name = "verify",
792 .argname = "depth",
793 .desc = "Turn on peer certificate verification, with a max of depth",
794 .type = OPTION_ARG_FUNC,
795 .opt.argfunc = s_client_opt_verify,
796 },
797 {
798 .name = "verify_return_error",
799 .desc = "Return verification error",
800 .type = OPTION_FLAG,
801 .opt.flag = &verify_return_error,
802 },
803 {
804 .name = "xmpphost",
805 .argname = "host",
806 .desc = "Connect to this virtual host on the xmpp server",
807 .type = OPTION_ARG,
808 .opt.arg = &cfg.xmpphost,
809 },
810 {
811 .name = NULL,
812 .desc = "",
813 .type = OPTION_ARGV_FUNC,
814 .opt.argvfunc = s_client_opt_verify_param,
815 },
816 { NULL },
817 };
818
819 static void
sc_usage(void)820 sc_usage(void)
821 {
822 fprintf(stderr, "usage: s_client "
823 "[-4 | -6] [-alpn protocols] [-bugs] [-CAfile file]\n"
824 " [-CApath directory] [-cert file] [-certform der | pem] [-check_ss_sig]\n"
825 " [-cipher cipherlist] [-connect host[:port]] [-crl_check]\n"
826 " [-crl_check_all] [-crlf] [-debug] [-dtls] [-dtls1_2] [-extended_crl]\n"
827 " [-groups list] [-host host] [-ign_eof] [-ignore_critical]\n"
828 " [-issuer_checks] [-key keyfile] [-keyform der | pem]\n"
829 " [-keymatexport label] [-keymatexportlen len] [-legacy_server_connect]\n"
830 " [-msg] [-mtu mtu] [-nbio] [-nbio_test] [-no_comp] [-no_ign_eof]\n"
831 " [-no_legacy_server_connect] [-no_ticket] \n"
832 " [-no_tls1_2] [-no_tls1_3] [-pass arg] [-policy_check]\n"
833 " [-port port] [-prexit] [-proxy host:port] [-quiet] [-reconnect]\n"
834 " [-servername name] [-serverpref] [-sess_in file] [-sess_out file]\n"
835 " [-showcerts] [-starttls protocol] [-state] [-status] [-timeout]\n"
836 " [-tls1_2] [-tls1_3] [-tlsextdebug]\n"
837 " [-use_srtp profiles] [-verify depth] [-verify_return_error]\n"
838 " [-x509_strict] [-xmpphost host]\n");
839 fprintf(stderr, "\n");
840 options_usage(s_client_options);
841 fprintf(stderr, "\n");
842 }
843
844 int
s_client_main(int argc,char ** argv)845 s_client_main(int argc, char **argv)
846 {
847 SSL *con = NULL;
848 int s, k, p = 0, pending = 0;
849 char *cbuf = NULL, *sbuf = NULL, *mbuf = NULL, *pbuf = NULL;
850 int cbuf_len, cbuf_off;
851 int sbuf_len, sbuf_off;
852 int full_log = 1;
853 const char *servername;
854 char *pass = NULL;
855 X509 *cert = NULL;
856 EVP_PKEY *key = NULL;
857 int badop = 0;
858 int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
859 SSL_CTX *ctx = NULL;
860 int ret = 1, in_init = 1, i;
861 BIO *bio_c_out = NULL;
862 BIO *sbio;
863 int mbuf_len = 0;
864 struct timeval timeout;
865 tlsextctx tlsextcbp = {NULL, 0};
866 struct sockaddr_storage peer;
867 int peerlen = sizeof(peer);
868
869 if (pledge("stdio cpath wpath rpath inet dns tty", NULL) == -1) {
870 perror("pledge");
871 exit(1);
872 }
873
874 memset(&cfg, 0, sizeof(cfg));
875 cfg.af = AF_UNSPEC;
876 cfg.cert_format = FORMAT_PEM;
877 cfg.host = SSL_HOST_NAME;
878 cfg.key_format = FORMAT_PEM;
879 cfg.keymatexportlen = 20;
880 cfg.meth = TLS_client_method();
881 cfg.port = PORT_STR;
882 cfg.socket_type = SOCK_STREAM;
883 cfg.starttls_proto = PROTO_OFF;
884 cfg.verify = SSL_VERIFY_NONE;
885
886 if (((cbuf = malloc(BUFSIZZ)) == NULL) ||
887 ((sbuf = malloc(BUFSIZZ)) == NULL) ||
888 ((pbuf = malloc(BUFSIZZ)) == NULL) ||
889 ((mbuf = malloc(BUFSIZZ + 1)) == NULL)) { /* NUL byte */
890 BIO_printf(bio_err, "out of memory\n");
891 goto end;
892 }
893 verify_depth = 0;
894
895 if (options_parse(argc, argv, s_client_options, NULL, NULL) != 0) {
896 badop = 1;
897 goto bad;
898 }
899 if (cfg.proxy != NULL) {
900 if (!extract_host_port(cfg.proxy,
901 &cfg.host, NULL, &cfg.port))
902 goto bad;
903 if (cfg.connect == NULL)
904 cfg.connect = SSL_HOST_NAME;
905 } else if (cfg.connect != NULL) {
906 if (!extract_host_port(cfg.connect,
907 &cfg.host, NULL, &cfg.port))
908 goto bad;
909 }
910 if (badop) {
911 bad:
912 if (cfg.errstr == NULL)
913 sc_usage();
914 goto end;
915 }
916
917 if (!app_passwd(bio_err, cfg.passarg, NULL, &pass, NULL)) {
918 BIO_printf(bio_err, "Error getting password\n");
919 goto end;
920 }
921 if (cfg.key_file == NULL)
922 cfg.key_file = cfg.cert_file;
923
924
925 if (cfg.key_file) {
926
927 key = load_key(bio_err, cfg.key_file,
928 cfg.key_format, 0, pass,
929 "client certificate private key file");
930 if (!key) {
931 ERR_print_errors(bio_err);
932 goto end;
933 }
934 }
935 if (cfg.cert_file) {
936 cert = load_cert(bio_err, cfg.cert_file,
937 cfg.cert_format,
938 NULL, "client certificate file");
939
940 if (!cert) {
941 ERR_print_errors(bio_err);
942 goto end;
943 }
944 }
945 if (cfg.quiet && !cfg.debug &&
946 !cfg.msg) {
947 if ((bio_c_out = BIO_new(BIO_s_null())) == NULL)
948 goto end;
949 } else {
950 if ((bio_c_out = BIO_new_fp(stdout, BIO_NOCLOSE)) == NULL)
951 goto end;
952 }
953
954 ctx = SSL_CTX_new(cfg.meth);
955 if (ctx == NULL) {
956 ERR_print_errors(bio_err);
957 goto end;
958 }
959
960 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
961
962 if (cfg.vpm)
963 SSL_CTX_set1_param(ctx, cfg.vpm);
964
965 if (!SSL_CTX_set_min_proto_version(ctx, cfg.min_version))
966 goto end;
967 if (!SSL_CTX_set_max_proto_version(ctx, cfg.max_version))
968 goto end;
969
970 #ifndef OPENSSL_NO_SRTP
971 if (cfg.srtp_profiles != NULL)
972 SSL_CTX_set_tlsext_use_srtp(ctx, cfg.srtp_profiles);
973 #endif
974 if (cfg.bugs)
975 SSL_CTX_set_options(ctx, SSL_OP_ALL | cfg.off);
976 else
977 SSL_CTX_set_options(ctx, cfg.off);
978
979 if (cfg.clr)
980 SSL_CTX_clear_options(ctx, cfg.clr);
981
982 if (cfg.alpn_in) {
983 unsigned short alpn_len;
984 unsigned char *alpn;
985
986 alpn = next_protos_parse(&alpn_len, cfg.alpn_in);
987 if (alpn == NULL) {
988 BIO_printf(bio_err, "Error parsing -alpn argument\n");
989 goto end;
990 }
991 SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len);
992 free(alpn);
993 }
994 if (cfg.groups_in != NULL) {
995 if (SSL_CTX_set1_groups_list(ctx, cfg.groups_in) != 1) {
996 BIO_printf(bio_err, "Failed to set groups '%s'\n",
997 cfg.groups_in);
998 goto end;
999 }
1000 }
1001
1002 if (cfg.state)
1003 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1004 if (cfg.cipher != NULL)
1005 if (!SSL_CTX_set_cipher_list(ctx, cfg.cipher)) {
1006 BIO_printf(bio_err, "error setting cipher list\n");
1007 ERR_print_errors(bio_err);
1008 goto end;
1009 }
1010
1011 SSL_CTX_set_verify(ctx, cfg.verify, verify_callback);
1012 if (!set_cert_key_stuff(ctx, cert, key))
1013 goto end;
1014
1015 if ((cfg.CAfile || cfg.CApath)
1016 && !SSL_CTX_load_verify_locations(ctx, cfg.CAfile,
1017 cfg.CApath))
1018 ERR_print_errors(bio_err);
1019
1020 if (!SSL_CTX_set_default_verify_paths(ctx))
1021 ERR_print_errors(bio_err);
1022
1023 con = SSL_new(ctx);
1024 if (cfg.sess_in) {
1025 SSL_SESSION *sess;
1026 BIO *stmp = BIO_new_file(cfg.sess_in, "r");
1027 if (!stmp) {
1028 BIO_printf(bio_err, "Can't open session file %s\n",
1029 cfg.sess_in);
1030 ERR_print_errors(bio_err);
1031 goto end;
1032 }
1033 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1034 BIO_free(stmp);
1035 if (!sess) {
1036 BIO_printf(bio_err, "Can't open session file %s\n",
1037 cfg.sess_in);
1038 ERR_print_errors(bio_err);
1039 goto end;
1040 }
1041 SSL_set_session(con, sess);
1042 SSL_SESSION_free(sess);
1043 }
1044
1045 /* Attempt to opportunistically use the host name for SNI. */
1046 servername = cfg.servername;
1047 if (servername == NULL)
1048 servername = cfg.host;
1049
1050 if (!cfg.no_servername && servername != NULL &&
1051 !SSL_set_tlsext_host_name(con, servername)) {
1052 long ssl_err = ERR_peek_error();
1053
1054 if (cfg.servername != NULL ||
1055 ERR_GET_LIB(ssl_err) != ERR_LIB_SSL ||
1056 ERR_GET_REASON(ssl_err) != SSL_R_SSL3_EXT_INVALID_SERVERNAME) {
1057 BIO_printf(bio_err,
1058 "Unable to set TLS servername extension.\n");
1059 ERR_print_errors(bio_err);
1060 goto end;
1061 }
1062 servername = NULL;
1063 ERR_clear_error();
1064 }
1065 if (!cfg.no_servername && servername != NULL) {
1066 tlsextcbp.biodebug = bio_err;
1067 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1068 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1069 }
1070
1071 re_start:
1072
1073 if (init_client(&s, cfg.host, cfg.port,
1074 cfg.socket_type, cfg.af) == 0) {
1075 BIO_printf(bio_err, "connect:errno=%d\n", errno);
1076 goto end;
1077 }
1078 BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s);
1079
1080 if (cfg.nbio) {
1081 if (!cfg.quiet)
1082 BIO_printf(bio_c_out, "turning on non blocking io\n");
1083 if (!BIO_socket_nbio(s, 1)) {
1084 ERR_print_errors(bio_err);
1085 goto end;
1086 }
1087 }
1088
1089 if (SSL_is_dtls(con)) {
1090 sbio = BIO_new_dgram(s, BIO_NOCLOSE);
1091 if (getsockname(s, (struct sockaddr *)&peer,
1092 (void *)&peerlen) == -1) {
1093 BIO_printf(bio_err, "getsockname:errno=%d\n",
1094 errno);
1095 shutdown(s, SHUT_RD);
1096 close(s);
1097 goto end;
1098 }
1099 (void) BIO_ctrl_set_connected(sbio, 1, &peer);
1100
1101 if (cfg.enable_timeouts) {
1102 timeout.tv_sec = 0;
1103 timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1104 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0,
1105 &timeout);
1106
1107 timeout.tv_sec = 0;
1108 timeout.tv_usec = DGRAM_SND_TIMEOUT;
1109 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0,
1110 &timeout);
1111 }
1112 if (cfg.socket_mtu > 28) {
1113 SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1114 SSL_set_mtu(con, cfg.socket_mtu - 28);
1115 } else
1116 /* want to do MTU discovery */
1117 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1118 } else
1119 sbio = BIO_new_socket(s, BIO_NOCLOSE);
1120
1121 if (cfg.nbio_test) {
1122 BIO *test;
1123
1124 test = BIO_new(BIO_f_nbio_test());
1125 sbio = BIO_push(test, sbio);
1126 }
1127 if (cfg.debug) {
1128 BIO_set_callback(sbio, bio_dump_callback);
1129 BIO_set_callback_arg(sbio, (char *) bio_c_out);
1130 }
1131 if (cfg.msg) {
1132 SSL_set_msg_callback(con, msg_cb);
1133 SSL_set_msg_callback_arg(con, bio_c_out);
1134 }
1135 if (cfg.tlsextdebug) {
1136 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1137 SSL_set_tlsext_debug_arg(con, bio_c_out);
1138 }
1139 if (cfg.status_req) {
1140 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1141 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1142 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1143 }
1144
1145 SSL_set_bio(con, sbio, sbio);
1146 SSL_set_connect_state(con);
1147
1148 /* ok, lets connect */
1149 read_tty = 1;
1150 write_tty = 0;
1151 tty_on = 0;
1152 read_ssl = 1;
1153 write_ssl = 1;
1154
1155 cbuf_len = 0;
1156 cbuf_off = 0;
1157 sbuf_len = 0;
1158 sbuf_off = 0;
1159
1160 /* This is an ugly hack that does a lot of assumptions */
1161 /*
1162 * We do have to handle multi-line responses which may come in a
1163 * single packet or not. We therefore have to use BIO_gets() which
1164 * does need a buffering BIO. So during the initial chitchat we do
1165 * push a buffering BIO into the chain that is removed again later on
1166 * to not disturb the rest of the s_client operation.
1167 */
1168 if (cfg.starttls_proto == PROTO_SMTP ||
1169 cfg.starttls_proto == PROTO_LMTP) {
1170 int foundit = 0;
1171 BIO *fbio = BIO_new(BIO_f_buffer());
1172 BIO_push(fbio, sbio);
1173 /* wait for multi-line response to end from SMTP */
1174 do {
1175 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
1176 }
1177 while (mbuf_len > 3 && mbuf[3] == '-');
1178 /* STARTTLS command requires EHLO... */
1179 BIO_printf(fbio, "%cHLO openssl.client.net\r\n",
1180 cfg.starttls_proto == PROTO_SMTP ? 'E' : 'L');
1181 (void) BIO_flush(fbio);
1182 /* wait for multi-line response to end EHLO SMTP response */
1183 do {
1184 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
1185 if (strstr(mbuf, "STARTTLS"))
1186 foundit = 1;
1187 }
1188 while (mbuf_len > 3 && mbuf[3] == '-');
1189 (void) BIO_flush(fbio);
1190 BIO_pop(fbio);
1191 BIO_free(fbio);
1192 if (!foundit)
1193 BIO_printf(bio_err,
1194 "didn't find starttls in server response,"
1195 " try anyway...\n");
1196 BIO_printf(sbio, "STARTTLS\r\n");
1197 BIO_read(sbio, sbuf, BUFSIZZ);
1198 } else if (cfg.starttls_proto == PROTO_POP3) {
1199 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
1200 if (mbuf_len == -1) {
1201 BIO_printf(bio_err, "BIO_read failed\n");
1202 goto end;
1203 }
1204 BIO_printf(sbio, "STLS\r\n");
1205 BIO_read(sbio, sbuf, BUFSIZZ);
1206 } else if (cfg.starttls_proto == PROTO_IMAP) {
1207 int foundit = 0;
1208 BIO *fbio = BIO_new(BIO_f_buffer());
1209 BIO_push(fbio, sbio);
1210 BIO_gets(fbio, mbuf, BUFSIZZ);
1211 /* STARTTLS command requires CAPABILITY... */
1212 BIO_printf(fbio, ". CAPABILITY\r\n");
1213 (void) BIO_flush(fbio);
1214 /* wait for multi-line CAPABILITY response */
1215 do {
1216 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
1217 if (strstr(mbuf, "STARTTLS"))
1218 foundit = 1;
1219 }
1220 while (mbuf_len > 3 && mbuf[0] != '.');
1221 (void) BIO_flush(fbio);
1222 BIO_pop(fbio);
1223 BIO_free(fbio);
1224 if (!foundit)
1225 BIO_printf(bio_err,
1226 "didn't find STARTTLS in server response,"
1227 " try anyway...\n");
1228 BIO_printf(sbio, ". STARTTLS\r\n");
1229 BIO_read(sbio, sbuf, BUFSIZZ);
1230 } else if (cfg.starttls_proto == PROTO_FTP) {
1231 BIO *fbio = BIO_new(BIO_f_buffer());
1232 BIO_push(fbio, sbio);
1233 /* wait for multi-line response to end from FTP */
1234 do {
1235 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
1236 }
1237 while (mbuf_len > 3 && mbuf[3] == '-');
1238 (void) BIO_flush(fbio);
1239 BIO_pop(fbio);
1240 BIO_free(fbio);
1241 BIO_printf(sbio, "AUTH TLS\r\n");
1242 BIO_read(sbio, sbuf, BUFSIZZ);
1243 } else if (cfg.starttls_proto == PROTO_XMPP) {
1244 int seen = 0;
1245 BIO_printf(sbio, "<stream:stream "
1246 "xmlns:stream='http://etherx.jabber.org/streams' "
1247 "xmlns='jabber:client' to='%s' version='1.0'>",
1248 cfg.xmpphost ?
1249 cfg.xmpphost : cfg.host);
1250 seen = BIO_read(sbio, mbuf, BUFSIZZ);
1251
1252 if (seen <= 0)
1253 goto shut;
1254
1255 mbuf[seen] = 0;
1256 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'") &&
1257 !strstr(mbuf, "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"")) {
1258 seen = BIO_read(sbio, mbuf, BUFSIZZ);
1259
1260 if (seen <= 0)
1261 goto shut;
1262
1263 mbuf[seen] = 0;
1264 }
1265 BIO_printf(sbio,
1266 "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1267 seen = BIO_read(sbio, sbuf, BUFSIZZ);
1268 sbuf[seen] = 0;
1269 if (!strstr(sbuf, "<proceed"))
1270 goto shut;
1271 mbuf[0] = 0;
1272 } else if (cfg.proxy != NULL) {
1273 BIO_printf(sbio, "CONNECT %s HTTP/1.0\r\n\r\n",
1274 cfg.connect);
1275 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
1276 if (mbuf_len == -1) {
1277 BIO_printf(bio_err, "BIO_read failed\n");
1278 goto end;
1279 }
1280 }
1281 for (;;) {
1282 struct pollfd pfd[3]; /* stdin, stdout, socket */
1283 int ptimeout = -1;
1284
1285 if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
1286 ptimeout = timeout.tv_sec * 1000 +
1287 timeout.tv_usec / 1000;
1288
1289 if (SSL_in_init(con) && !SSL_total_renegotiations(con)) {
1290 in_init = 1;
1291 tty_on = 0;
1292 } else {
1293 tty_on = 1;
1294 if (in_init) {
1295 in_init = 0;
1296 if (cfg.sess_out) {
1297 BIO *stmp = BIO_new_file(
1298 cfg.sess_out, "w");
1299 if (stmp) {
1300 PEM_write_bio_SSL_SESSION(stmp,
1301 SSL_get_session(con));
1302 BIO_free(stmp);
1303 } else
1304 BIO_printf(bio_err,
1305 "Error writing session file %s\n",
1306 cfg.sess_out);
1307 }
1308 print_stuff(bio_c_out, con, full_log);
1309 if (full_log > 0)
1310 full_log--;
1311
1312 if (cfg.starttls_proto) {
1313 BIO_write(bio_err, mbuf, mbuf_len);
1314 /* We don't need to know any more */
1315 cfg.starttls_proto = PROTO_OFF;
1316 }
1317 if (cfg.reconnect) {
1318 cfg.reconnect--;
1319 BIO_printf(bio_c_out,
1320 "drop connection and then reconnect\n");
1321 SSL_shutdown(con);
1322 SSL_set_connect_state(con);
1323 shutdown(SSL_get_fd(con), SHUT_RD);
1324 close(SSL_get_fd(con));
1325 goto re_start;
1326 }
1327 }
1328 }
1329
1330 ssl_pending = read_ssl && SSL_pending(con);
1331
1332 pfd[0].fd = -1;
1333 pfd[1].fd = -1;
1334 if (!ssl_pending) {
1335 if (tty_on) {
1336 if (read_tty) {
1337 pfd[0].fd = fileno(stdin);
1338 pfd[0].events = POLLIN;
1339 }
1340 if (write_tty) {
1341 pfd[1].fd = fileno(stdout);
1342 pfd[1].events = POLLOUT;
1343 }
1344 }
1345
1346 pfd[2].fd = SSL_get_fd(con);
1347 pfd[2].events = 0;
1348 if (read_ssl)
1349 pfd[2].events |= POLLIN;
1350 if (write_ssl)
1351 pfd[2].events |= POLLOUT;
1352
1353 /* printf("mode tty(%d %d%d) ssl(%d%d)\n",
1354 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1355
1356 i = poll(pfd, 3, ptimeout);
1357 if (i == -1) {
1358 BIO_printf(bio_err, "bad select %d\n",
1359 errno);
1360 goto shut;
1361 /* goto end; */
1362 }
1363 }
1364 if (SSL_is_dtls(con) &&
1365 DTLSv1_handle_timeout(con) > 0)
1366 BIO_printf(bio_err, "TIMEOUT occured\n");
1367 if (!ssl_pending &&
1368 (pfd[2].revents & (POLLOUT|POLLERR|POLLNVAL))) {
1369 if (pfd[2].revents & (POLLERR|POLLNVAL)) {
1370 BIO_printf(bio_err, "poll error");
1371 goto shut;
1372 }
1373 k = SSL_write(con, &(cbuf[cbuf_off]),
1374 (unsigned int) cbuf_len);
1375 switch (SSL_get_error(con, k)) {
1376 case SSL_ERROR_NONE:
1377 cbuf_off += k;
1378 cbuf_len -= k;
1379 if (k <= 0)
1380 goto end;
1381 /* we have done a write(con,NULL,0); */
1382 if (cbuf_len <= 0) {
1383 read_tty = 1;
1384 write_ssl = 0;
1385 } else { /* if (cbuf_len > 0) */
1386 read_tty = 0;
1387 write_ssl = 1;
1388 }
1389 break;
1390 case SSL_ERROR_WANT_WRITE:
1391 BIO_printf(bio_c_out, "write W BLOCK\n");
1392 write_ssl = 1;
1393 read_tty = 0;
1394 break;
1395 case SSL_ERROR_WANT_READ:
1396 BIO_printf(bio_c_out, "write R BLOCK\n");
1397 write_tty = 0;
1398 read_ssl = 1;
1399 write_ssl = 0;
1400 break;
1401 case SSL_ERROR_WANT_X509_LOOKUP:
1402 BIO_printf(bio_c_out, "write X BLOCK\n");
1403 break;
1404 case SSL_ERROR_ZERO_RETURN:
1405 if (cbuf_len != 0) {
1406 BIO_printf(bio_c_out, "shutdown\n");
1407 ret = 0;
1408 goto shut;
1409 } else {
1410 read_tty = 1;
1411 write_ssl = 0;
1412 break;
1413 }
1414
1415 case SSL_ERROR_SYSCALL:
1416 if ((k != 0) || (cbuf_len != 0)) {
1417 BIO_printf(bio_err, "write:errno=%d\n",
1418 errno);
1419 goto shut;
1420 } else {
1421 read_tty = 1;
1422 write_ssl = 0;
1423 }
1424 break;
1425 case SSL_ERROR_SSL:
1426 ERR_print_errors(bio_err);
1427 goto shut;
1428 }
1429 } else if (!ssl_pending &&
1430 (pfd[1].revents & (POLLOUT|POLLERR|POLLNVAL))) {
1431 if (pfd[1].revents & (POLLERR|POLLNVAL)) {
1432 BIO_printf(bio_err, "poll error");
1433 goto shut;
1434 }
1435 i = write(fileno(stdout), &(sbuf[sbuf_off]), sbuf_len);
1436
1437 if (i <= 0) {
1438 BIO_printf(bio_c_out, "DONE\n");
1439 ret = 0;
1440 goto shut;
1441 /* goto end; */
1442 }
1443 sbuf_len -= i;
1444 sbuf_off += i;
1445 if (sbuf_len <= 0) {
1446 read_ssl = 1;
1447 write_tty = 0;
1448 }
1449 } else if (ssl_pending || (pfd[2].revents & (POLLIN|POLLHUP))) {
1450 #ifdef RENEG
1451 {
1452 static int iiii;
1453 if (++iiii == 52) {
1454 SSL_renegotiate(con);
1455 iiii = 0;
1456 }
1457 }
1458 #endif
1459 if (cfg.peekaboo) {
1460 k = p = SSL_peek(con, pbuf, 1024 /* BUFSIZZ */ );
1461 pending = SSL_pending(con);
1462 if (SSL_get_error(con, p) == SSL_ERROR_NONE) {
1463 if (p <= 0)
1464 goto end;
1465
1466 k = SSL_read(con, sbuf, p);
1467 }
1468 } else {
1469 k = SSL_read(con, sbuf, 1024 /* BUFSIZZ */ );
1470 }
1471
1472 switch (SSL_get_error(con, k)) {
1473 case SSL_ERROR_NONE:
1474 if (k <= 0)
1475 goto end;
1476 sbuf_off = 0;
1477 sbuf_len = k;
1478 if (cfg.peekaboo) {
1479 if (p != pending) {
1480 ret = -1;
1481 BIO_printf(bio_err,
1482 "peeked %d but pending %d!\n",
1483 p, pending);
1484 goto shut;
1485 }
1486 if (k < p) {
1487 ret = -1;
1488 BIO_printf(bio_err,
1489 "read less than peek!\n");
1490 goto shut;
1491 }
1492 if (p > 0 &&
1493 (memcmp(sbuf, pbuf, p) != 0)) {
1494 ret = -1;
1495 BIO_printf(bio_err,
1496 "peek of %d different from read of %d!\n",
1497 p, k);
1498 goto shut;
1499 }
1500 }
1501 read_ssl = 0;
1502 write_tty = 1;
1503 break;
1504 case SSL_ERROR_WANT_WRITE:
1505 BIO_printf(bio_c_out, "read W BLOCK\n");
1506 write_ssl = 1;
1507 read_tty = 0;
1508 break;
1509 case SSL_ERROR_WANT_READ:
1510 BIO_printf(bio_c_out, "read R BLOCK\n");
1511 write_tty = 0;
1512 read_ssl = 1;
1513 if ((read_tty == 0) && (write_ssl == 0))
1514 write_ssl = 1;
1515 break;
1516 case SSL_ERROR_WANT_X509_LOOKUP:
1517 BIO_printf(bio_c_out, "read X BLOCK\n");
1518 break;
1519 case SSL_ERROR_SYSCALL:
1520 ret = errno;
1521 BIO_printf(bio_err, "read:errno=%d\n", ret);
1522 goto shut;
1523 case SSL_ERROR_ZERO_RETURN:
1524 BIO_printf(bio_c_out, "closed\n");
1525 ret = 0;
1526 goto shut;
1527 case SSL_ERROR_SSL:
1528 ERR_print_errors(bio_err);
1529 goto shut;
1530 /* break; */
1531 }
1532 } else if (pfd[0].revents) {
1533 if (pfd[0].revents & (POLLERR|POLLNVAL)) {
1534 BIO_printf(bio_err, "poll error");
1535 goto shut;
1536 }
1537 if (cfg.crlf) {
1538 int j, lf_num;
1539
1540 i = read(fileno(stdin), cbuf, BUFSIZZ / 2);
1541 lf_num = 0;
1542 /* both loops are skipped when i <= 0 */
1543 for (j = 0; j < i; j++)
1544 if (cbuf[j] == '\n')
1545 lf_num++;
1546 for (j = i - 1; j >= 0; j--) {
1547 cbuf[j + lf_num] = cbuf[j];
1548 if (cbuf[j] == '\n') {
1549 lf_num--;
1550 i++;
1551 cbuf[j + lf_num] = '\r';
1552 }
1553 }
1554 assert(lf_num == 0);
1555 } else
1556 i = read(fileno(stdin), cbuf, BUFSIZZ);
1557
1558 if ((!cfg.ign_eof) &&
1559 ((i <= 0) || (cbuf[0] == 'Q'))) {
1560 BIO_printf(bio_err, "DONE\n");
1561 ret = 0;
1562 goto shut;
1563 }
1564 if ((!cfg.ign_eof) && (cbuf[0] == 'R')) {
1565 BIO_printf(bio_err, "RENEGOTIATING\n");
1566 SSL_renegotiate(con);
1567 cbuf_len = 0;
1568 } else {
1569 cbuf_len = i;
1570 cbuf_off = 0;
1571 }
1572
1573 write_ssl = 1;
1574 read_tty = 0;
1575 }
1576 }
1577
1578 ret = 0;
1579 shut:
1580 if (in_init)
1581 print_stuff(bio_c_out, con, full_log);
1582 SSL_shutdown(con);
1583 shutdown(SSL_get_fd(con), SHUT_RD);
1584 close(SSL_get_fd(con));
1585 end:
1586 if (con != NULL) {
1587 if (cfg.prexit != 0)
1588 print_stuff(bio_c_out, con, 1);
1589 SSL_free(con);
1590 }
1591 SSL_CTX_free(ctx);
1592 X509_free(cert);
1593 EVP_PKEY_free(key);
1594 free(pass);
1595 X509_VERIFY_PARAM_free(cfg.vpm);
1596 freezero(cbuf, BUFSIZZ);
1597 freezero(sbuf, BUFSIZZ);
1598 freezero(pbuf, BUFSIZZ);
1599 freezero(mbuf, BUFSIZZ);
1600 BIO_free(bio_c_out);
1601
1602 return (ret);
1603 }
1604
1605 static void
print_stuff(BIO * bio,SSL * s,int full)1606 print_stuff(BIO *bio, SSL *s, int full)
1607 {
1608 X509 *peer = NULL;
1609 char *p;
1610 static const char *space = " ";
1611 char buf[BUFSIZ];
1612 STACK_OF(X509) *sk;
1613 STACK_OF(X509_NAME) *sk2;
1614 const SSL_CIPHER *c;
1615 X509_NAME *xn;
1616 int j, i;
1617 unsigned char *exportedkeymat;
1618
1619 if (full) {
1620 int got_a_chain = 0;
1621
1622 sk = SSL_get_peer_cert_chain(s);
1623 if (sk != NULL) {
1624 got_a_chain = 1; /* we don't have it for SSL2
1625 * (yet) */
1626
1627 BIO_printf(bio, "---\nCertificate chain\n");
1628 for (i = 0; i < sk_X509_num(sk); i++) {
1629 X509_NAME_oneline(X509_get_subject_name(
1630 sk_X509_value(sk, i)), buf, sizeof buf);
1631 BIO_printf(bio, "%2d s:%s\n", i, buf);
1632 X509_NAME_oneline(X509_get_issuer_name(
1633 sk_X509_value(sk, i)), buf, sizeof buf);
1634 BIO_printf(bio, " i:%s\n", buf);
1635 if (cfg.showcerts)
1636 PEM_write_bio_X509(bio,
1637 sk_X509_value(sk, i));
1638 }
1639 }
1640 BIO_printf(bio, "---\n");
1641 peer = SSL_get_peer_certificate(s);
1642 if (peer != NULL) {
1643 BIO_printf(bio, "Server certificate\n");
1644 if (!(cfg.showcerts && got_a_chain)) {
1645 /* Redundant if we showed the whole chain */
1646 PEM_write_bio_X509(bio, peer);
1647 }
1648 X509_NAME_oneline(X509_get_subject_name(peer),
1649 buf, sizeof buf);
1650 BIO_printf(bio, "subject=%s\n", buf);
1651 X509_NAME_oneline(X509_get_issuer_name(peer),
1652 buf, sizeof buf);
1653 BIO_printf(bio, "issuer=%s\n", buf);
1654 } else
1655 BIO_printf(bio, "no peer certificate available\n");
1656
1657 sk2 = SSL_get_client_CA_list(s);
1658 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0)) {
1659 BIO_printf(bio,
1660 "---\nAcceptable client certificate CA names\n");
1661 for (i = 0; i < sk_X509_NAME_num(sk2); i++) {
1662 xn = sk_X509_NAME_value(sk2, i);
1663 X509_NAME_oneline(xn, buf, sizeof(buf));
1664 BIO_write(bio, buf, strlen(buf));
1665 BIO_write(bio, "\n", 1);
1666 }
1667 } else {
1668 BIO_printf(bio,
1669 "---\nNo client certificate CA names sent\n");
1670 }
1671 p = SSL_get_shared_ciphers(s, buf, sizeof buf);
1672 if (p != NULL) {
1673 /*
1674 * This works only for SSL 2. In later protocol
1675 * versions, the client does not know what other
1676 * ciphers (in addition to the one to be used in the
1677 * current connection) the server supports.
1678 */
1679
1680 BIO_printf(bio,
1681 "---\nCiphers common between both SSL endpoints:\n");
1682 j = i = 0;
1683 while (*p) {
1684 if (*p == ':') {
1685 BIO_write(bio, space, 15 - j % 25);
1686 i++;
1687 j = 0;
1688 BIO_write(bio,
1689 ((i % 3) ? " " : "\n"), 1);
1690 } else {
1691 BIO_write(bio, p, 1);
1692 j++;
1693 }
1694 p++;
1695 }
1696 BIO_write(bio, "\n", 1);
1697 }
1698
1699 ssl_print_tmp_key(bio, s);
1700
1701 BIO_printf(bio,
1702 "---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1703 BIO_number_read(SSL_get_rbio(s)),
1704 BIO_number_written(SSL_get_wbio(s)));
1705 }
1706 BIO_printf(bio, (SSL_cache_hit(s) ? "---\nReused, " : "---\nNew, "));
1707 c = SSL_get_current_cipher(s);
1708 BIO_printf(bio, "%s, Cipher is %s\n",
1709 SSL_CIPHER_get_version(c),
1710 SSL_CIPHER_get_name(c));
1711 if (peer != NULL) {
1712 EVP_PKEY *pktmp;
1713
1714 pktmp = X509_get0_pubkey(peer);
1715 BIO_printf(bio, "Server public key is %d bit\n",
1716 EVP_PKEY_bits(pktmp));
1717 }
1718 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1719 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1720
1721 /* Compression is not supported and will always be none. */
1722 BIO_printf(bio, "Compression: NONE\n");
1723 BIO_printf(bio, "Expansion: NONE\n");
1724
1725 #ifdef SSL_DEBUG
1726 {
1727 /* Print out local port of connection: useful for debugging */
1728 int sock;
1729 struct sockaddr_in ladd;
1730 socklen_t ladd_size = sizeof(ladd);
1731 sock = SSL_get_fd(s);
1732 getsockname(sock, (struct sockaddr *) & ladd, &ladd_size);
1733 BIO_printf(bio, "LOCAL PORT is %u\n",
1734 ntohs(ladd.sin_port));
1735 }
1736 #endif
1737
1738 {
1739 const unsigned char *proto;
1740 unsigned int proto_len;
1741 SSL_get0_alpn_selected(s, &proto, &proto_len);
1742 if (proto_len > 0) {
1743 BIO_printf(bio, "ALPN protocol: ");
1744 BIO_write(bio, proto, proto_len);
1745 BIO_write(bio, "\n", 1);
1746 } else
1747 BIO_printf(bio, "No ALPN negotiated\n");
1748 }
1749
1750 #ifndef OPENSSL_NO_SRTP
1751 {
1752 SRTP_PROTECTION_PROFILE *srtp_profile;
1753
1754 srtp_profile = SSL_get_selected_srtp_profile(s);
1755 if (srtp_profile)
1756 BIO_printf(bio,
1757 "SRTP Extension negotiated, profile=%s\n",
1758 srtp_profile->name);
1759 }
1760 #endif
1761
1762 SSL_SESSION_print(bio, SSL_get_session(s));
1763 if (cfg.keymatexportlabel != NULL) {
1764 BIO_printf(bio, "Keying material exporter:\n");
1765 BIO_printf(bio, " Label: '%s'\n",
1766 cfg.keymatexportlabel);
1767 BIO_printf(bio, " Length: %i bytes\n",
1768 cfg.keymatexportlen);
1769 exportedkeymat = malloc(cfg.keymatexportlen);
1770 if (exportedkeymat != NULL) {
1771 if (!SSL_export_keying_material(s, exportedkeymat,
1772 cfg.keymatexportlen,
1773 cfg.keymatexportlabel,
1774 strlen(cfg.keymatexportlabel),
1775 NULL, 0, 0)) {
1776 BIO_printf(bio, " Error\n");
1777 } else {
1778 BIO_printf(bio, " Keying material: ");
1779 for (i = 0; i < cfg.keymatexportlen; i++)
1780 BIO_printf(bio, "%02X",
1781 exportedkeymat[i]);
1782 BIO_printf(bio, "\n");
1783 }
1784 free(exportedkeymat);
1785 }
1786 }
1787 BIO_printf(bio, "---\n");
1788 X509_free(peer);
1789 /* flush, or debugging output gets mixed with http response */
1790 (void) BIO_flush(bio);
1791 }
1792
1793 static int
ocsp_resp_cb(SSL * s,void * arg)1794 ocsp_resp_cb(SSL *s, void *arg)
1795 {
1796 const unsigned char *p;
1797 int len;
1798 OCSP_RESPONSE *rsp;
1799 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
1800 BIO_puts(arg, "OCSP response: ");
1801 if (!p) {
1802 BIO_puts(arg, "no response sent\n");
1803 return 1;
1804 }
1805 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
1806 if (!rsp) {
1807 BIO_puts(arg, "response parse error\n");
1808 BIO_dump_indent(arg, (char *) p, len, 4);
1809 return 0;
1810 }
1811 BIO_puts(arg, "\n======================================\n");
1812 OCSP_RESPONSE_print(arg, rsp, 0);
1813 BIO_puts(arg, "======================================\n");
1814 OCSP_RESPONSE_free(rsp);
1815 return 1;
1816 }
1817
1818 static int
ssl_servername_cb(SSL * s,int * ad,void * arg)1819 ssl_servername_cb(SSL *s, int *ad, void *arg)
1820 {
1821 tlsextctx *p = (tlsextctx *) arg;
1822 const char *hn = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
1823 if (SSL_get_servername_type(s) != -1)
1824 p->ack = !SSL_session_reused(s) && hn != NULL;
1825 else
1826 BIO_printf(bio_err, "Can't use SSL_get_servername\n");
1827
1828 return SSL_TLSEXT_ERR_OK;
1829 }
1830
1831