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1.21 ! tb 1: /* $OpenBSD: s_cb.c,v 1.20 2022/08/31 07:12:30 tb Exp $ */
1.1 jsing 2: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3: * All rights reserved.
4: *
5: * This package is an SSL implementation written
6: * by Eric Young (eay@cryptsoft.com).
7: * The implementation was written so as to conform with Netscapes SSL.
8: *
9: * This library is free for commercial and non-commercial use as long as
10: * the following conditions are aheared to. The following conditions
11: * apply to all code found in this distribution, be it the RC4, RSA,
12: * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13: * included with this distribution is covered by the same copyright terms
14: * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15: *
16: * Copyright remains Eric Young's, and as such any Copyright notices in
17: * the code are not to be removed.
18: * If this package is used in a product, Eric Young should be given attribution
19: * as the author of the parts of the library used.
20: * This can be in the form of a textual message at program startup or
21: * in documentation (online or textual) provided with the package.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
31: * 3. All advertising materials mentioning features or use of this software
32: * must display the following acknowledgement:
33: * "This product includes cryptographic software written by
34: * Eric Young (eay@cryptsoft.com)"
35: * The word 'cryptographic' can be left out if the rouines from the library
36: * being used are not cryptographic related :-).
37: * 4. If you include any Windows specific code (or a derivative thereof) from
38: * the apps directory (application code) you must include an acknowledgement:
39: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40: *
41: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51: * SUCH DAMAGE.
52: *
53: * The licence and distribution terms for any publically available version or
54: * derivative of this code cannot be changed. i.e. this code cannot simply be
55: * copied and put under another distribution licence
56: * [including the GNU Public Licence.]
57: */
58: /* ====================================================================
59: * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60: *
61: * Redistribution and use in source and binary forms, with or without
62: * modification, are permitted provided that the following conditions
63: * are met:
64: *
65: * 1. Redistributions of source code must retain the above copyright
66: * notice, this list of conditions and the following disclaimer.
67: *
68: * 2. Redistributions in binary form must reproduce the above copyright
69: * notice, this list of conditions and the following disclaimer in
70: * the documentation and/or other materials provided with the
71: * distribution.
72: *
73: * 3. All advertising materials mentioning features or use of this
74: * software must display the following acknowledgment:
75: * "This product includes software developed by the OpenSSL Project
76: * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77: *
78: * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79: * endorse or promote products derived from this software without
80: * prior written permission. For written permission, please contact
81: * openssl-core@openssl.org.
82: *
83: * 5. Products derived from this software may not be called "OpenSSL"
84: * nor may "OpenSSL" appear in their names without prior written
85: * permission of the OpenSSL Project.
86: *
87: * 6. Redistributions of any form whatsoever must retain the following
88: * acknowledgment:
89: * "This product includes software developed by the OpenSSL Project
90: * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91: *
92: * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103: * OF THE POSSIBILITY OF SUCH DAMAGE.
104: * ====================================================================
105: *
106: * This product includes cryptographic software written by Eric Young
107: * (eay@cryptsoft.com). This product includes software written by Tim
108: * Hudson (tjh@cryptsoft.com).
109: *
110: */
111:
112: #include <sys/socket.h>
113:
114: #include <netinet/in.h>
115:
116: #include <netdb.h>
117: #include <stdio.h>
118: #include <stdlib.h>
119: #include <string.h>
120:
121: #include "apps.h"
122:
123: #include <openssl/err.h>
124: #include <openssl/ssl.h>
125: #include <openssl/x509.h>
126:
127: #include "s_apps.h"
128:
129: #define COOKIE_SECRET_LENGTH 16
130:
131: int verify_depth = 0;
132: int verify_return_error = 0;
133: unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
134: int cookie_initialized = 0;
135:
136: int
137: verify_callback(int ok, X509_STORE_CTX * ctx)
138: {
139: X509 *err_cert;
140: int err, depth;
141:
142: err_cert = X509_STORE_CTX_get_current_cert(ctx);
143: err = X509_STORE_CTX_get_error(ctx);
144: depth = X509_STORE_CTX_get_error_depth(ctx);
145:
146: BIO_printf(bio_err, "depth=%d ", depth);
147: if (err_cert) {
148: X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
149: 0, XN_FLAG_ONELINE);
150: BIO_puts(bio_err, "\n");
151: } else
152: BIO_puts(bio_err, "<no cert>\n");
153: if (!ok) {
154: BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
155: X509_verify_cert_error_string(err));
156: if (verify_depth >= depth) {
157: if (!verify_return_error)
158: ok = 1;
159: } else {
160: ok = 0;
161: }
162: }
163: switch (err) {
164: case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
165: BIO_puts(bio_err, "issuer= ");
1.4 doug 166: if (err_cert == NULL)
167: BIO_puts(bio_err, "<error getting cert>");
168: else
169: X509_NAME_print_ex(bio_err,
170: X509_get_issuer_name(err_cert), 0, XN_FLAG_ONELINE);
1.1 jsing 171: BIO_puts(bio_err, "\n");
172: break;
173: case X509_V_ERR_CERT_NOT_YET_VALID:
174: case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
175: BIO_printf(bio_err, "notBefore=");
1.4 doug 176: if (err_cert == NULL)
177: BIO_printf(bio_err, " <error getting cert>");
178: else
179: ASN1_TIME_print(bio_err, X509_get_notBefore(err_cert));
1.1 jsing 180: BIO_printf(bio_err, "\n");
181: break;
182: case X509_V_ERR_CERT_HAS_EXPIRED:
183: case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
184: BIO_printf(bio_err, "notAfter=");
1.4 doug 185: if (err_cert == NULL)
186: BIO_printf(bio_err, " <error getting cert>");
187: else
188: ASN1_TIME_print(bio_err, X509_get_notAfter(err_cert));
1.1 jsing 189: BIO_printf(bio_err, "\n");
190: break;
191: case X509_V_ERR_NO_EXPLICIT_POLICY:
192: break;
193: }
194:
195: BIO_printf(bio_err, "verify return:%d\n", ok);
196: return (ok);
197: }
198:
199: int
200: set_cert_stuff(SSL_CTX * ctx, char *cert_file, char *key_file)
201: {
1.18 tb 202: if (cert_file == NULL)
203: return 1;
204:
205: if (key_file == NULL)
206: key_file = cert_file;
207:
208: if (SSL_CTX_use_certificate_file(ctx, cert_file, SSL_FILETYPE_PEM) <= 0) {
209: BIO_printf(bio_err,
210: "unable to get certificate from '%s'\n", cert_file);
211: ERR_print_errors(bio_err);
212: return 0;
213: }
214: if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
215: BIO_printf(bio_err, "unable to get private key from '%s'\n",
216: key_file);
217: ERR_print_errors(bio_err);
218: return 0;
219: }
1.1 jsing 220:
1.18 tb 221: /* Now we know that a key and cert have been set against the context. */
222: if (!SSL_CTX_check_private_key(ctx)) {
223: BIO_printf(bio_err,
224: "Private key does not match the certificate public key\n");
225: return 0;
1.1 jsing 226: }
1.18 tb 227:
228: return 1;
1.1 jsing 229: }
230:
231: int
232: set_cert_key_stuff(SSL_CTX * ctx, X509 * cert, EVP_PKEY * key)
233: {
234: if (cert == NULL)
235: return 1;
236: if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
237: BIO_printf(bio_err, "error setting certificate\n");
238: ERR_print_errors(bio_err);
239: return 0;
240: }
241: if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
242: BIO_printf(bio_err, "error setting private key\n");
243: ERR_print_errors(bio_err);
244: return 0;
245: }
246: /*
247: * Now we know that a key and cert have been set against the SSL
248: * context
249: */
250: if (!SSL_CTX_check_private_key(ctx)) {
251: BIO_printf(bio_err,
252: "Private key does not match the certificate public key\n");
253: return 0;
254: }
1.7 jsing 255: return 1;
256: }
257:
258: int
259: ssl_print_tmp_key(BIO *out, SSL *s)
260: {
261: const char *cname;
262: EVP_PKEY *pkey;
263: EC_KEY *ec;
1.20 tb 264: const EC_GROUP *group;
1.7 jsing 265: int nid;
266:
267: if (!SSL_get_server_tmp_key(s, &pkey))
268: return 0;
269:
270: BIO_puts(out, "Server Temp Key: ");
271: switch (EVP_PKEY_id(pkey)) {
272: case EVP_PKEY_DH:
273: BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(pkey));
274: break;
275:
276: case EVP_PKEY_EC:
1.20 tb 277: if ((ec = EVP_PKEY_get0_EC_KEY(pkey)) == NULL)
278: goto err;
279: if ((group = EC_KEY_get0_group(ec)) == NULL)
280: goto err;
281:
282: nid = EC_GROUP_get_curve_name(group);
1.7 jsing 283:
284: if ((cname = EC_curve_nid2nist(nid)) == NULL)
285: cname = OBJ_nid2sn(nid);
286:
287: BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(pkey));
288: break;
289:
290: default:
291: BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(pkey)),
292: EVP_PKEY_bits(pkey));
293: }
294:
1.20 tb 295: err:
1.7 jsing 296: EVP_PKEY_free(pkey);
1.1 jsing 297: return 1;
298: }
299:
300: long
301: bio_dump_callback(BIO * bio, int cmd, const char *argp,
302: int argi, long argl, long ret)
303: {
304: BIO *out;
305:
306: out = (BIO *) BIO_get_callback_arg(bio);
307: if (out == NULL)
308: return (ret);
309:
310: if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
311: BIO_printf(out,
312: "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
313: (void *) bio, argp, (unsigned long) argi, ret, ret);
314: BIO_dump(out, argp, (int) ret);
315: return (ret);
316: } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
317: BIO_printf(out,
318: "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
319: (void *) bio, argp, (unsigned long) argi, ret, ret);
320: BIO_dump(out, argp, (int) ret);
321: }
322: return (ret);
323: }
324:
325: void
326: apps_ssl_info_callback(const SSL * s, int where, int ret)
327: {
328: const char *str;
329: int w;
330:
331: w = where & ~SSL_ST_MASK;
332:
333: if (w & SSL_ST_CONNECT)
334: str = "SSL_connect";
335: else if (w & SSL_ST_ACCEPT)
336: str = "SSL_accept";
337: else
338: str = "undefined";
339:
340: if (where & SSL_CB_LOOP) {
341: BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
342: } else if (where & SSL_CB_ALERT) {
343: str = (where & SSL_CB_READ) ? "read" : "write";
344: BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n", str,
345: SSL_alert_type_string_long(ret),
346: SSL_alert_desc_string_long(ret));
347: } else if (where & SSL_CB_EXIT) {
348: if (ret == 0)
349: BIO_printf(bio_err, "%s:failed in %s\n",
350: str, SSL_state_string_long(s));
351: else if (ret < 0) {
352: BIO_printf(bio_err, "%s:error in %s\n",
353: str, SSL_state_string_long(s));
354: }
355: }
356: }
357:
358:
359: void
360: msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL * ssl, void *arg)
361: {
362: BIO *bio = arg;
363: const char *str_write_p, *str_version, *str_content_type = "",
364: *str_details1 = "", *str_details2 = "";
365:
366: str_write_p = write_p ? ">>>" : "<<<";
367:
1.13 tb 368: /* XXX convert to using ssl_get_version */
1.1 jsing 369: switch (version) {
370: case SSL2_VERSION:
371: str_version = "SSL 2.0";
372: break;
373: case SSL3_VERSION:
374: str_version = "SSL 3.0 ";
375: break;
376: case TLS1_VERSION:
377: str_version = "TLS 1.0 ";
378: break;
379: case TLS1_1_VERSION:
380: str_version = "TLS 1.1 ";
381: break;
382: case TLS1_2_VERSION:
383: str_version = "TLS 1.2 ";
384: break;
1.12 tb 385: case TLS1_3_VERSION:
386: str_version = "TLS 1.3 ";
387: break;
1.1 jsing 388: case DTLS1_VERSION:
389: str_version = "DTLS 1.0 ";
390: break;
1.15 inoguchi 391: case DTLS1_2_VERSION:
392: str_version = "DTLS 1.2 ";
393: break;
1.1 jsing 394: default:
395: str_version = "???";
396: }
397:
398: if (version == SSL2_VERSION) {
399: str_details1 = "???";
400:
401: if (len > 0) {
1.13 tb 402: /* XXX magic numbers */
1.1 jsing 403: switch (((const unsigned char *) buf)[0]) {
404: case 0:
405: str_details1 = ", ERROR:";
406: str_details2 = " ???";
407: if (len >= 3) {
408: unsigned err = (((const unsigned char *) buf)[1] << 8) + ((const unsigned char *) buf)[2];
409:
410: switch (err) {
411: case 0x0001:
412: str_details2 = " NO-CIPHER-ERROR";
413: break;
414: case 0x0002:
415: str_details2 = " NO-CERTIFICATE-ERROR";
416: break;
417: case 0x0004:
418: str_details2 = " BAD-CERTIFICATE-ERROR";
419: break;
420: case 0x0006:
421: str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
422: break;
423: }
424: }
425: break;
426: case 1:
427: str_details1 = ", CLIENT-HELLO";
428: break;
429: case 2:
430: str_details1 = ", CLIENT-MASTER-KEY";
431: break;
432: case 3:
433: str_details1 = ", CLIENT-FINISHED";
434: break;
435: case 4:
436: str_details1 = ", SERVER-HELLO";
437: break;
438: case 5:
439: str_details1 = ", SERVER-VERIFY";
440: break;
441: case 6:
442: str_details1 = ", SERVER-FINISHED";
443: break;
444: case 7:
445: str_details1 = ", REQUEST-CERTIFICATE";
446: break;
447: case 8:
448: str_details1 = ", CLIENT-CERTIFICATE";
449: break;
450: }
451: }
452: }
453: if (version == SSL3_VERSION || version == TLS1_VERSION ||
454: version == TLS1_1_VERSION || version == TLS1_2_VERSION ||
1.15 inoguchi 455: version == TLS1_3_VERSION || version == DTLS1_VERSION ||
456: version == DTLS1_2_VERSION) {
1.13 tb 457: /* XXX magic numbers are in ssl3.h */
1.1 jsing 458: switch (content_type) {
459: case 20:
460: str_content_type = "ChangeCipherSpec";
461: break;
462: case 21:
463: str_content_type = "Alert";
464: break;
465: case 22:
466: str_content_type = "Handshake";
467: break;
468: }
469:
470: if (content_type == 21) { /* Alert */
471: str_details1 = ", ???";
472:
473: if (len == 2) {
474: switch (((const unsigned char *) buf)[0]) {
475: case 1:
476: str_details1 = ", warning";
477: break;
478: case 2:
479: str_details1 = ", fatal";
480: break;
481: }
482:
483: str_details2 = " ???";
484: switch (((const unsigned char *) buf)[1]) {
485: case 0:
486: str_details2 = " close_notify";
487: break;
488: case 10:
489: str_details2 = " unexpected_message";
490: break;
491: case 20:
492: str_details2 = " bad_record_mac";
493: break;
494: case 21:
495: str_details2 = " decryption_failed";
496: break;
497: case 22:
498: str_details2 = " record_overflow";
499: break;
500: case 30:
501: str_details2 = " decompression_failure";
502: break;
503: case 40:
504: str_details2 = " handshake_failure";
505: break;
506: case 42:
507: str_details2 = " bad_certificate";
508: break;
509: case 43:
510: str_details2 = " unsupported_certificate";
511: break;
512: case 44:
513: str_details2 = " certificate_revoked";
514: break;
515: case 45:
516: str_details2 = " certificate_expired";
517: break;
518: case 46:
519: str_details2 = " certificate_unknown";
520: break;
521: case 47:
522: str_details2 = " illegal_parameter";
523: break;
524: case 48:
525: str_details2 = " unknown_ca";
526: break;
527: case 49:
528: str_details2 = " access_denied";
529: break;
530: case 50:
531: str_details2 = " decode_error";
532: break;
533: case 51:
534: str_details2 = " decrypt_error";
535: break;
536: case 60:
537: str_details2 = " export_restriction";
538: break;
539: case 70:
540: str_details2 = " protocol_version";
541: break;
542: case 71:
543: str_details2 = " insufficient_security";
544: break;
545: case 80:
546: str_details2 = " internal_error";
547: break;
548: case 90:
549: str_details2 = " user_canceled";
550: break;
551: case 100:
552: str_details2 = " no_renegotiation";
553: break;
554: case 110:
555: str_details2 = " unsupported_extension";
556: break;
557: case 111:
558: str_details2 = " certificate_unobtainable";
559: break;
560: case 112:
561: str_details2 = " unrecognized_name";
562: break;
563: case 113:
564: str_details2 = " bad_certificate_status_response";
565: break;
566: case 114:
567: str_details2 = " bad_certificate_hash_value";
568: break;
569: case 115:
570: str_details2 = " unknown_psk_identity";
571: break;
572: }
573: }
574: }
575: if (content_type == 22) { /* Handshake */
576: str_details1 = "???";
577:
578: if (len > 0) {
579: switch (((const unsigned char *) buf)[0]) {
580: case 0:
581: str_details1 = ", HelloRequest";
582: break;
583: case 1:
584: str_details1 = ", ClientHello";
585: break;
586: case 2:
587: str_details1 = ", ServerHello";
588: break;
589: case 3:
590: str_details1 = ", HelloVerifyRequest";
591: break;
1.12 tb 592: case 4:
593: str_details1 = ", NewSessionTicket";
594: break;
595: case 5:
596: str_details1 = ", EndOfEarlyData";
597: break;
598: case 8:
599: str_details1 = ", EncryptedExtensions";
600: break;
1.1 jsing 601: case 11:
602: str_details1 = ", Certificate";
603: break;
604: case 12:
605: str_details1 = ", ServerKeyExchange";
606: break;
607: case 13:
608: str_details1 = ", CertificateRequest";
609: break;
610: case 14:
611: str_details1 = ", ServerHelloDone";
612: break;
613: case 15:
614: str_details1 = ", CertificateVerify";
615: break;
616: case 16:
617: str_details1 = ", ClientKeyExchange";
618: break;
619: case 20:
620: str_details1 = ", Finished";
1.12 tb 621: break;
622: case 24:
623: str_details1 = ", KeyUpdate";
1.1 jsing 624: break;
625: }
626: }
627: }
628: }
629: BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p,
630: str_version, str_content_type, (unsigned long) len,
631: str_details1, str_details2);
632:
633: if (len > 0) {
634: size_t num, i;
635:
636: BIO_printf(bio, " ");
637: num = len;
1.3 doug 638:
1.1 jsing 639: for (i = 0; i < num; i++) {
640: if (i % 16 == 0 && i > 0)
641: BIO_printf(bio, "\n ");
642: BIO_printf(bio, " %02x",
643: ((const unsigned char *) buf)[i]);
644: }
645: if (i < len)
646: BIO_printf(bio, " ...");
647: BIO_printf(bio, "\n");
648: }
649: (void) BIO_flush(bio);
650: }
651:
652: void
653: tlsext_cb(SSL * s, int client_server, int type, unsigned char *data, int len,
654: void *arg)
655: {
656: BIO *bio = arg;
657: char *extname;
658:
659: switch (type) {
660: case TLSEXT_TYPE_server_name:
661: extname = "server name";
662: break;
663:
664: case TLSEXT_TYPE_max_fragment_length:
665: extname = "max fragment length";
666: break;
667:
668: case TLSEXT_TYPE_client_certificate_url:
669: extname = "client certificate URL";
670: break;
671:
672: case TLSEXT_TYPE_trusted_ca_keys:
673: extname = "trusted CA keys";
674: break;
675:
676: case TLSEXT_TYPE_truncated_hmac:
677: extname = "truncated HMAC";
678: break;
679:
680: case TLSEXT_TYPE_status_request:
681: extname = "status request";
682: break;
683:
684: case TLSEXT_TYPE_user_mapping:
685: extname = "user mapping";
686: break;
687:
688: case TLSEXT_TYPE_client_authz:
689: extname = "client authz";
690: break;
691:
692: case TLSEXT_TYPE_server_authz:
693: extname = "server authz";
694: break;
695:
696: case TLSEXT_TYPE_cert_type:
697: extname = "cert type";
698: break;
699:
1.11 jsing 700: case TLSEXT_TYPE_supported_groups:
701: extname = "supported groups";
1.1 jsing 702: break;
703:
704: case TLSEXT_TYPE_ec_point_formats:
705: extname = "EC point formats";
706: break;
707:
708: case TLSEXT_TYPE_srp:
709: extname = "SRP";
710: break;
711:
712: case TLSEXT_TYPE_signature_algorithms:
713: extname = "signature algorithms";
714: break;
715:
716: case TLSEXT_TYPE_use_srtp:
717: extname = "use SRTP";
718: break;
719:
720: case TLSEXT_TYPE_heartbeat:
721: extname = "heartbeat";
722: break;
723:
1.14 inoguchi 724: case TLSEXT_TYPE_application_layer_protocol_negotiation:
725: extname = "application layer protocol negotiation";
726: break;
727:
728: case TLSEXT_TYPE_padding:
729: extname = "TLS padding";
730: break;
731:
1.1 jsing 732: case TLSEXT_TYPE_session_ticket:
733: extname = "session ticket";
734: break;
735:
1.14 inoguchi 736: #if defined(LIBRESSL_HAS_TLS1_3) || defined(LIBRESSL_INTERNAL)
737: case TLSEXT_TYPE_pre_shared_key:
738: extname = "pre shared key";
739: break;
740:
741: case TLSEXT_TYPE_early_data:
742: extname = "early data";
743: break;
744:
745: case TLSEXT_TYPE_supported_versions:
746: extname = "supported versions";
747: break;
748:
749: case TLSEXT_TYPE_cookie:
750: extname = "cookie";
751: break;
752:
753: case TLSEXT_TYPE_psk_key_exchange_modes:
754: extname = "PSK key exchange modes";
755: break;
756:
757: case TLSEXT_TYPE_certificate_authorities:
758: extname = "certificate authorities";
759: break;
760:
761: case TLSEXT_TYPE_oid_filters:
762: extname = "OID filters";
763: break;
764:
765: case TLSEXT_TYPE_post_handshake_auth:
766: extname = "post handshake auth";
767: break;
768:
769: case TLSEXT_TYPE_signature_algorithms_cert:
770: extname = "signature algorithms cert";
1.9 inoguchi 771: break;
772:
1.14 inoguchi 773: case TLSEXT_TYPE_key_share:
774: extname = "key share";
1.9 inoguchi 775: break;
1.14 inoguchi 776: #endif
1.9 inoguchi 777:
1.14 inoguchi 778: case TLSEXT_TYPE_renegotiate:
779: extname = "renegotiation info";
1.1 jsing 780: break;
781:
782: default:
783: extname = "unknown";
784: break;
785:
786: }
787:
788: BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
789: client_server ? "server" : "client", extname, type, len);
790: BIO_dump(bio, (char *) data, len);
791: (void) BIO_flush(bio);
792: }
793:
794: int
795: generate_cookie_callback(SSL * ssl, unsigned char *cookie,
796: unsigned int *cookie_len)
797: {
798: unsigned char *buffer, result[EVP_MAX_MD_SIZE];
799: unsigned int length, resultlength;
800: union {
801: struct sockaddr sa;
802: struct sockaddr_in s4;
803: struct sockaddr_in6 s6;
804: } peer;
805:
806: /* Initialize a random secret */
807: if (!cookie_initialized) {
1.2 jsing 808: arc4random_buf(cookie_secret, COOKIE_SECRET_LENGTH);
1.1 jsing 809: cookie_initialized = 1;
810: }
811: /* Read peer information */
812: (void) BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
813:
814: /* Create buffer with peer's address and port */
815: length = 0;
816: switch (peer.sa.sa_family) {
817: case AF_INET:
818: length += sizeof(struct in_addr);
819: length += sizeof(peer.s4.sin_port);
820: break;
821: case AF_INET6:
822: length += sizeof(struct in6_addr);
823: length += sizeof(peer.s6.sin6_port);
824: break;
825: default:
826: OPENSSL_assert(0);
827: break;
828: }
829: buffer = malloc(length);
830:
831: if (buffer == NULL) {
832: BIO_printf(bio_err, "out of memory\n");
833: return 0;
834: }
835: switch (peer.sa.sa_family) {
836: case AF_INET:
837: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
838: memcpy(buffer + sizeof(peer.s4.sin_port),
839: &peer.s4.sin_addr, sizeof(struct in_addr));
840: break;
841: case AF_INET6:
842: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
843: memcpy(buffer + sizeof(peer.s6.sin6_port),
844: &peer.s6.sin6_addr, sizeof(struct in6_addr));
845: break;
846: default:
847: OPENSSL_assert(0);
848: break;
849: }
850:
851: /* Calculate HMAC of buffer using the secret */
852: HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
853: buffer, length, result, &resultlength);
854: free(buffer);
855:
856: memcpy(cookie, result, resultlength);
857: *cookie_len = resultlength;
858:
859: return 1;
860: }
861:
862: int
1.10 tb 863: verify_cookie_callback(SSL * ssl, const unsigned char *cookie,
864: unsigned int cookie_len)
1.1 jsing 865: {
866: unsigned char *buffer, result[EVP_MAX_MD_SIZE];
867: unsigned int length, resultlength;
868: union {
869: struct sockaddr sa;
870: struct sockaddr_in s4;
871: struct sockaddr_in6 s6;
872: } peer;
873:
874: /* If secret isn't initialized yet, the cookie can't be valid */
875: if (!cookie_initialized)
876: return 0;
877:
878: /* Read peer information */
879: (void) BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
880:
881: /* Create buffer with peer's address and port */
882: length = 0;
883: switch (peer.sa.sa_family) {
884: case AF_INET:
885: length += sizeof(struct in_addr);
886: length += sizeof(peer.s4.sin_port);
887: break;
888: case AF_INET6:
889: length += sizeof(struct in6_addr);
890: length += sizeof(peer.s6.sin6_port);
891: break;
892: default:
893: OPENSSL_assert(0);
894: break;
895: }
896: buffer = malloc(length);
897:
898: if (buffer == NULL) {
899: BIO_printf(bio_err, "out of memory\n");
900: return 0;
901: }
902: switch (peer.sa.sa_family) {
903: case AF_INET:
904: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
905: memcpy(buffer + sizeof(peer.s4.sin_port),
906: &peer.s4.sin_addr, sizeof(struct in_addr));
907: break;
908: case AF_INET6:
909: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
910: memcpy(buffer + sizeof(peer.s6.sin6_port),
911: &peer.s6.sin6_addr, sizeof(struct in6_addr));
912: break;
913: default:
914: OPENSSL_assert(0);
915: break;
916: }
917:
918: /* Calculate HMAC of buffer using the secret */
1.19 tb 919: if (HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
920: buffer, length, result, &resultlength) == NULL) {
921: free(buffer);
922: return 0;
923: }
924:
1.1 jsing 925: free(buffer);
926:
927: if (cookie_len == resultlength &&
928: memcmp(result, cookie, resultlength) == 0)
929: return 1;
930:
931: return 0;
932: }