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1 /*
2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /*
11 * callback functions used by s_client, s_server, and s_time,
12 * as well as other common logic for those apps
13 */
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <string.h> /* for memcpy() and strcmp() */
17 #include "apps.h"
18 #include <openssl/core_names.h>
19 #include <openssl/params.h>
20 #include <openssl/err.h>
21 #include <openssl/rand.h>
22 #include <openssl/x509.h>
23 #include <openssl/ssl.h>
24 #include <openssl/bn.h>
25 #ifndef OPENSSL_NO_DH
26 # include <openssl/dh.h>
27 #endif
28 #include "s_apps.h"
29
30 #define COOKIE_SECRET_LENGTH 16
31
32 VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 };
33
34 #ifndef OPENSSL_NO_SOCK
35 static unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
36 static int cookie_initialized = 0;
37 #endif
38 static BIO *bio_keylog = NULL;
39
40 static const char *lookup(int val, const STRINT_PAIR* list, const char* def)
41 {
42 for ( ; list->name; ++list)
43 if (list->retval == val)
44 return list->name;
45 return def;
46 }
47
48 int verify_callback(int ok, X509_STORE_CTX *ctx)
49 {
50 X509 *err_cert;
51 int err, depth;
52
53 err_cert = X509_STORE_CTX_get_current_cert(ctx);
54 err = X509_STORE_CTX_get_error(ctx);
55 depth = X509_STORE_CTX_get_error_depth(ctx);
56
57 if (!verify_args.quiet || !ok) {
58 BIO_printf(bio_err, "depth=%d ", depth);
59 if (err_cert != NULL) {
60 X509_NAME_print_ex(bio_err,
61 X509_get_subject_name(err_cert),
62 0, get_nameopt());
63 BIO_puts(bio_err, "\n");
64 } else {
65 BIO_puts(bio_err, "<no cert>\n");
66 }
67 }
68 if (!ok) {
69 BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
70 X509_verify_cert_error_string(err));
71 if (verify_args.depth < 0 || verify_args.depth >= depth) {
72 if (!verify_args.return_error)
73 ok = 1;
74 verify_args.error = err;
75 } else {
76 ok = 0;
77 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
78 }
79 }
80 switch (err) {
81 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
82 if (err_cert != NULL) {
83 BIO_puts(bio_err, "issuer= ");
84 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
85 0, get_nameopt());
86 BIO_puts(bio_err, "\n");
87 }
88 break;
89 case X509_V_ERR_CERT_NOT_YET_VALID:
90 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
91 if (err_cert != NULL) {
92 BIO_printf(bio_err, "notBefore=");
93 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert));
94 BIO_printf(bio_err, "\n");
95 }
96 break;
97 case X509_V_ERR_CERT_HAS_EXPIRED:
98 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
99 if (err_cert != NULL) {
100 BIO_printf(bio_err, "notAfter=");
101 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert));
102 BIO_printf(bio_err, "\n");
103 }
104 break;
105 case X509_V_ERR_NO_EXPLICIT_POLICY:
106 if (!verify_args.quiet)
107 policies_print(ctx);
108 break;
109 }
110 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
111 policies_print(ctx);
112 if (ok && !verify_args.quiet)
113 BIO_printf(bio_err, "verify return:%d\n", ok);
114 return ok;
115 }
116
117 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
118 {
119 if (cert_file != NULL) {
120 if (SSL_CTX_use_certificate_file(ctx, cert_file,
121 SSL_FILETYPE_PEM) <= 0) {
122 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
123 cert_file);
124 ERR_print_errors(bio_err);
125 return 0;
126 }
127 if (key_file == NULL)
128 key_file = cert_file;
129 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
130 BIO_printf(bio_err, "unable to get private key from '%s'\n",
131 key_file);
132 ERR_print_errors(bio_err);
133 return 0;
134 }
135
136 /*
137 * If we are using DSA, we can copy the parameters from the private
138 * key
139 */
140
141 /*
142 * Now we know that a key and cert have been set against the SSL
143 * context
144 */
145 if (!SSL_CTX_check_private_key(ctx)) {
146 BIO_printf(bio_err,
147 "Private key does not match the certificate public key\n");
148 return 0;
149 }
150 }
151 return 1;
152 }
153
154 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
155 STACK_OF(X509) *chain, int build_chain)
156 {
157 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
158
159 if (cert == NULL)
160 return 1;
161 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
162 BIO_printf(bio_err, "error setting certificate\n");
163 ERR_print_errors(bio_err);
164 return 0;
165 }
166
167 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
168 BIO_printf(bio_err, "error setting private key\n");
169 ERR_print_errors(bio_err);
170 return 0;
171 }
172
173 /*
174 * Now we know that a key and cert have been set against the SSL context
175 */
176 if (!SSL_CTX_check_private_key(ctx)) {
177 BIO_printf(bio_err,
178 "Private key does not match the certificate public key\n");
179 return 0;
180 }
181 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
182 BIO_printf(bio_err, "error setting certificate chain\n");
183 ERR_print_errors(bio_err);
184 return 0;
185 }
186 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
187 BIO_printf(bio_err, "error building certificate chain\n");
188 ERR_print_errors(bio_err);
189 return 0;
190 }
191 return 1;
192 }
193
194 static STRINT_PAIR cert_type_list[] = {
195 {"RSA sign", TLS_CT_RSA_SIGN},
196 {"DSA sign", TLS_CT_DSS_SIGN},
197 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
198 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
199 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
200 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
201 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
202 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
203 {"GOST12 Sign", TLS_CT_GOST12_IANA_SIGN},
204 {NULL}
205 };
206
207 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
208 {
209 const unsigned char *p;
210 int i;
211 int cert_type_num = SSL_get0_certificate_types(s, &p);
212
213 if (!cert_type_num)
214 return;
215 BIO_puts(bio, "Client Certificate Types: ");
216 for (i = 0; i < cert_type_num; i++) {
217 unsigned char cert_type = p[i];
218 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
219
220 if (i)
221 BIO_puts(bio, ", ");
222 if (cname != NULL)
223 BIO_puts(bio, cname);
224 else
225 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
226 }
227 BIO_puts(bio, "\n");
228 }
229
230 static const char *get_sigtype(int nid)
231 {
232 switch (nid) {
233 case EVP_PKEY_RSA:
234 return "RSA";
235
236 case EVP_PKEY_RSA_PSS:
237 return "RSA-PSS";
238
239 case EVP_PKEY_DSA:
240 return "DSA";
241
242 case EVP_PKEY_EC:
243 return "ECDSA";
244
245 case NID_ED25519:
246 return "Ed25519";
247
248 case NID_ED448:
249 return "Ed448";
250
251 case NID_id_GostR3410_2001:
252 return "gost2001";
253
254 case NID_id_GostR3410_2012_256:
255 return "gost2012_256";
256
257 case NID_id_GostR3410_2012_512:
258 return "gost2012_512";
259
260 default:
261 /* Try to output provider-registered sig alg name */
262 return OBJ_nid2sn(nid);
263 }
264 }
265
266 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
267 {
268 int i, nsig, client;
269
270 client = SSL_is_server(s) ? 0 : 1;
271 if (shared)
272 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
273 else
274 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
275 if (nsig == 0)
276 return 1;
277
278 if (shared)
279 BIO_puts(out, "Shared ");
280
281 if (client)
282 BIO_puts(out, "Requested ");
283 BIO_puts(out, "Signature Algorithms: ");
284 for (i = 0; i < nsig; i++) {
285 int hash_nid, sign_nid;
286 unsigned char rhash, rsign;
287 const char *sstr = NULL;
288 if (shared)
289 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
290 &rsign, &rhash);
291 else
292 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
293 if (i)
294 BIO_puts(out, ":");
295 sstr = get_sigtype(sign_nid);
296 if (sstr)
297 BIO_printf(out, "%s", sstr);
298 else
299 BIO_printf(out, "0x%02X", (int)rsign);
300 if (hash_nid != NID_undef)
301 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
302 else if (sstr == NULL)
303 BIO_printf(out, "+0x%02X", (int)rhash);
304 }
305 BIO_puts(out, "\n");
306 return 1;
307 }
308
309 int ssl_print_sigalgs(BIO *out, SSL *s)
310 {
311 int nid;
312
313 if (!SSL_is_server(s))
314 ssl_print_client_cert_types(out, s);
315 do_print_sigalgs(out, s, 0);
316 do_print_sigalgs(out, s, 1);
317 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
318 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
319 if (SSL_get_peer_signature_type_nid(s, &nid))
320 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
321 return 1;
322 }
323
324 #ifndef OPENSSL_NO_EC
325 int ssl_print_point_formats(BIO *out, SSL *s)
326 {
327 int i, nformats;
328 const char *pformats;
329
330 nformats = SSL_get0_ec_point_formats(s, &pformats);
331 if (nformats <= 0)
332 return 1;
333 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
334 for (i = 0; i < nformats; i++, pformats++) {
335 if (i)
336 BIO_puts(out, ":");
337 switch (*pformats) {
338 case TLSEXT_ECPOINTFORMAT_uncompressed:
339 BIO_puts(out, "uncompressed");
340 break;
341
342 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
343 BIO_puts(out, "ansiX962_compressed_prime");
344 break;
345
346 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
347 BIO_puts(out, "ansiX962_compressed_char2");
348 break;
349
350 default:
351 BIO_printf(out, "unknown(%d)", (int)*pformats);
352 break;
353
354 }
355 }
356 BIO_puts(out, "\n");
357 return 1;
358 }
359
360 int ssl_print_groups(BIO *out, SSL *s, int noshared)
361 {
362 int i, ngroups, *groups, nid;
363
364 ngroups = SSL_get1_groups(s, NULL);
365 if (ngroups <= 0)
366 return 1;
367 groups = app_malloc(ngroups * sizeof(int), "groups to print");
368 SSL_get1_groups(s, groups);
369
370 BIO_puts(out, "Supported groups: ");
371 for (i = 0; i < ngroups; i++) {
372 if (i)
373 BIO_puts(out, ":");
374 nid = groups[i];
375 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
376 }
377 OPENSSL_free(groups);
378 if (noshared) {
379 BIO_puts(out, "\n");
380 return 1;
381 }
382 BIO_puts(out, "\nShared groups: ");
383 ngroups = SSL_get_shared_group(s, -1);
384 for (i = 0; i < ngroups; i++) {
385 if (i)
386 BIO_puts(out, ":");
387 nid = SSL_get_shared_group(s, i);
388 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
389 }
390 if (ngroups == 0)
391 BIO_puts(out, "NONE");
392 BIO_puts(out, "\n");
393 return 1;
394 }
395 #endif
396
397 int ssl_print_tmp_key(BIO *out, SSL *s)
398 {
399 EVP_PKEY *key;
400
401 if (!SSL_get_peer_tmp_key(s, &key))
402 return 1;
403 BIO_puts(out, "Server Temp Key: ");
404 switch (EVP_PKEY_get_id(key)) {
405 case EVP_PKEY_RSA:
406 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
407 break;
408
409 case EVP_PKEY_DH:
410 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
411 break;
412 #ifndef OPENSSL_NO_EC
413 case EVP_PKEY_EC:
414 {
415 char name[80];
416 size_t name_len;
417
418 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
419 name, sizeof(name), &name_len))
420 strcpy(name, "?");
421 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
422 }
423 break;
424 #endif
425 default:
426 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
427 EVP_PKEY_get_bits(key));
428 }
429 EVP_PKEY_free(key);
430 return 1;
431 }
432
433 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
434 int argi, long argl, int ret, size_t *processed)
435 {
436 BIO *out;
437
438 out = (BIO *)BIO_get_callback_arg(bio);
439 if (out == NULL)
440 return ret;
441
442 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
443 if (ret > 0 && processed != NULL) {
444 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
445 (void *)bio, (void *)argp, len, *processed, *processed);
446 BIO_dump(out, argp, (int)*processed);
447 } else {
448 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
449 (void *)bio, (void *)argp, len, ret);
450 }
451 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
452 if (ret > 0 && processed != NULL) {
453 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
454 (void *)bio, (void *)argp, len, *processed, *processed);
455 BIO_dump(out, argp, (int)*processed);
456 } else {
457 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
458 (void *)bio, (void *)argp, len, ret);
459 }
460 }
461 return ret;
462 }
463
464 void apps_ssl_info_callback(const SSL *s, int where, int ret)
465 {
466 const char *str;
467 int w;
468
469 w = where & ~SSL_ST_MASK;
470
471 if (w & SSL_ST_CONNECT)
472 str = "SSL_connect";
473 else if (w & SSL_ST_ACCEPT)
474 str = "SSL_accept";
475 else
476 str = "undefined";
477
478 if (where & SSL_CB_LOOP) {
479 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
480 } else if (where & SSL_CB_ALERT) {
481 str = (where & SSL_CB_READ) ? "read" : "write";
482 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
483 str,
484 SSL_alert_type_string_long(ret),
485 SSL_alert_desc_string_long(ret));
486 } else if (where & SSL_CB_EXIT) {
487 if (ret == 0)
488 BIO_printf(bio_err, "%s:failed in %s\n",
489 str, SSL_state_string_long(s));
490 else if (ret < 0)
491 BIO_printf(bio_err, "%s:error in %s\n",
492 str, SSL_state_string_long(s));
493 }
494 }
495
496 static STRINT_PAIR ssl_versions[] = {
497 {"SSL 3.0", SSL3_VERSION},
498 {"TLS 1.0", TLS1_VERSION},
499 {"TLS 1.1", TLS1_1_VERSION},
500 {"TLS 1.2", TLS1_2_VERSION},
501 {"TLS 1.3", TLS1_3_VERSION},
502 {"DTLS 1.0", DTLS1_VERSION},
503 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
504 {NULL}
505 };
506
507 static STRINT_PAIR alert_types[] = {
508 {" close_notify", 0},
509 {" end_of_early_data", 1},
510 {" unexpected_message", 10},
511 {" bad_record_mac", 20},
512 {" decryption_failed", 21},
513 {" record_overflow", 22},
514 {" decompression_failure", 30},
515 {" handshake_failure", 40},
516 {" bad_certificate", 42},
517 {" unsupported_certificate", 43},
518 {" certificate_revoked", 44},
519 {" certificate_expired", 45},
520 {" certificate_unknown", 46},
521 {" illegal_parameter", 47},
522 {" unknown_ca", 48},
523 {" access_denied", 49},
524 {" decode_error", 50},
525 {" decrypt_error", 51},
526 {" export_restriction", 60},
527 {" protocol_version", 70},
528 {" insufficient_security", 71},
529 {" internal_error", 80},
530 {" inappropriate_fallback", 86},
531 {" user_canceled", 90},
532 {" no_renegotiation", 100},
533 {" missing_extension", 109},
534 {" unsupported_extension", 110},
535 {" certificate_unobtainable", 111},
536 {" unrecognized_name", 112},
537 {" bad_certificate_status_response", 113},
538 {" bad_certificate_hash_value", 114},
539 {" unknown_psk_identity", 115},
540 {" certificate_required", 116},
541 {NULL}
542 };
543
544 static STRINT_PAIR handshakes[] = {
545 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
546 {", ClientHello", SSL3_MT_CLIENT_HELLO},
547 {", ServerHello", SSL3_MT_SERVER_HELLO},
548 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
549 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
550 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
551 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
552 {", Certificate", SSL3_MT_CERTIFICATE},
553 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
554 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
555 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
556 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
557 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
558 {", Finished", SSL3_MT_FINISHED},
559 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
560 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
561 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
562 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
563 {", CompressedCertificate", SSL3_MT_COMPRESSED_CERTIFICATE},
564 #ifndef OPENSSL_NO_NEXTPROTONEG
565 {", NextProto", SSL3_MT_NEXT_PROTO},
566 #endif
567 {", MessageHash", SSL3_MT_MESSAGE_HASH},
568 {NULL}
569 };
570
571 void msg_cb(int write_p, int version, int content_type, const void *buf,
572 size_t len, SSL *ssl, void *arg)
573 {
574 BIO *bio = arg;
575 const char *str_write_p = write_p ? ">>>" : "<<<";
576 char tmpbuf[128];
577 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
578 const unsigned char* bp = buf;
579
580 if (version == SSL3_VERSION ||
581 version == TLS1_VERSION ||
582 version == TLS1_1_VERSION ||
583 version == TLS1_2_VERSION ||
584 version == TLS1_3_VERSION ||
585 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
586 str_version = lookup(version, ssl_versions, "???");
587 switch (content_type) {
588 case SSL3_RT_CHANGE_CIPHER_SPEC:
589 /* type 20 */
590 str_content_type = ", ChangeCipherSpec";
591 break;
592 case SSL3_RT_ALERT:
593 /* type 21 */
594 str_content_type = ", Alert";
595 str_details1 = ", ???";
596 if (len == 2) {
597 switch (bp[0]) {
598 case 1:
599 str_details1 = ", warning";
600 break;
601 case 2:
602 str_details1 = ", fatal";
603 break;
604 }
605 str_details2 = lookup((int)bp[1], alert_types, " ???");
606 }
607 break;
608 case SSL3_RT_HANDSHAKE:
609 /* type 22 */
610 str_content_type = ", Handshake";
611 str_details1 = "???";
612 if (len > 0)
613 str_details1 = lookup((int)bp[0], handshakes, "???");
614 break;
615 case SSL3_RT_APPLICATION_DATA:
616 /* type 23 */
617 str_content_type = ", ApplicationData";
618 break;
619 case SSL3_RT_HEADER:
620 /* type 256 */
621 str_content_type = ", RecordHeader";
622 break;
623 case SSL3_RT_INNER_CONTENT_TYPE:
624 /* type 257 */
625 str_content_type = ", InnerContent";
626 break;
627 default:
628 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
629 str_content_type = tmpbuf;
630 }
631 } else {
632 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
633 str_version = tmpbuf;
634 }
635
636 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
637 str_content_type, (unsigned long)len, str_details1,
638 str_details2);
639
640 if (len > 0) {
641 size_t num, i;
642
643 BIO_printf(bio, " ");
644 num = len;
645 for (i = 0; i < num; i++) {
646 if (i % 16 == 0 && i > 0)
647 BIO_printf(bio, "\n ");
648 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
649 }
650 if (i < len)
651 BIO_printf(bio, " ...");
652 BIO_printf(bio, "\n");
653 }
654 (void)BIO_flush(bio);
655 }
656
657 static STRINT_PAIR tlsext_types[] = {
658 {"server name", TLSEXT_TYPE_server_name},
659 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
660 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
661 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
662 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
663 {"status request", TLSEXT_TYPE_status_request},
664 {"user mapping", TLSEXT_TYPE_user_mapping},
665 {"client authz", TLSEXT_TYPE_client_authz},
666 {"server authz", TLSEXT_TYPE_server_authz},
667 {"cert type", TLSEXT_TYPE_cert_type},
668 {"supported_groups", TLSEXT_TYPE_supported_groups},
669 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
670 {"SRP", TLSEXT_TYPE_srp},
671 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
672 {"use SRTP", TLSEXT_TYPE_use_srtp},
673 {"session ticket", TLSEXT_TYPE_session_ticket},
674 {"renegotiation info", TLSEXT_TYPE_renegotiate},
675 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
676 {"TLS padding", TLSEXT_TYPE_padding},
677 #ifdef TLSEXT_TYPE_next_proto_neg
678 {"next protocol", TLSEXT_TYPE_next_proto_neg},
679 #endif
680 #ifdef TLSEXT_TYPE_encrypt_then_mac
681 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
682 #endif
683 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
684 {"application layer protocol negotiation",
685 TLSEXT_TYPE_application_layer_protocol_negotiation},
686 #endif
687 #ifdef TLSEXT_TYPE_extended_master_secret
688 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
689 #endif
690 {"compress certificate", TLSEXT_TYPE_compress_certificate},
691 {"key share", TLSEXT_TYPE_key_share},
692 {"supported versions", TLSEXT_TYPE_supported_versions},
693 {"psk", TLSEXT_TYPE_psk},
694 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
695 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
696 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
697 {NULL}
698 };
699
700 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
701 static STRINT_PAIR signature_tls13_scheme_list[] = {
702 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
703 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
704 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
705 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
706 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
707 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
708 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
709 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
710 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
711 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
712 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
713 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
714 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
715 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
716 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
717 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
718 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
719 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
720 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
721 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
722 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
723 {NULL}
724 };
725
726 /* from rfc5246 7.4.1.4.1. */
727 static STRINT_PAIR signature_tls12_alg_list[] = {
728 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
729 {"RSA", TLSEXT_signature_rsa /* 1 */},
730 {"DSA", TLSEXT_signature_dsa /* 2 */},
731 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
732 {NULL}
733 };
734
735 /* from rfc5246 7.4.1.4.1. */
736 static STRINT_PAIR signature_tls12_hash_list[] = {
737 {"none", TLSEXT_hash_none /* 0 */},
738 {"MD5", TLSEXT_hash_md5 /* 1 */},
739 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
740 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
741 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
742 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
743 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
744 {NULL}
745 };
746
747 void tlsext_cb(SSL *s, int client_server, int type,
748 const unsigned char *data, int len, void *arg)
749 {
750 BIO *bio = arg;
751 const char *extname = lookup(type, tlsext_types, "unknown");
752
753 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
754 client_server ? "server" : "client", extname, type, len);
755 BIO_dump(bio, (const char *)data, len);
756 (void)BIO_flush(bio);
757 }
758
759 #ifndef OPENSSL_NO_SOCK
760 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
761 size_t *cookie_len)
762 {
763 unsigned char *buffer = NULL;
764 size_t length = 0;
765 unsigned short port;
766 BIO_ADDR *lpeer = NULL, *peer = NULL;
767 int res = 0;
768
769 /* Initialize a random secret */
770 if (!cookie_initialized) {
771 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
772 BIO_printf(bio_err, "error setting random cookie secret\n");
773 return 0;
774 }
775 cookie_initialized = 1;
776 }
777
778 if (SSL_is_dtls(ssl)) {
779 lpeer = peer = BIO_ADDR_new();
780 if (peer == NULL) {
781 BIO_printf(bio_err, "memory full\n");
782 return 0;
783 }
784
785 /* Read peer information */
786 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
787 } else {
788 peer = ourpeer;
789 }
790
791 /* Create buffer with peer's address and port */
792 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
793 BIO_printf(bio_err, "Failed getting peer address\n");
794 BIO_ADDR_free(lpeer);
795 return 0;
796 }
797 OPENSSL_assert(length != 0);
798 port = BIO_ADDR_rawport(peer);
799 length += sizeof(port);
800 buffer = app_malloc(length, "cookie generate buffer");
801
802 memcpy(buffer, &port, sizeof(port));
803 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
804
805 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
806 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
807 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
808 BIO_printf(bio_err,
809 "Error calculating HMAC-SHA1 of buffer with secret\n");
810 goto end;
811 }
812 res = 1;
813 end:
814 OPENSSL_free(buffer);
815 BIO_ADDR_free(lpeer);
816
817 return res;
818 }
819
820 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
821 size_t cookie_len)
822 {
823 unsigned char result[EVP_MAX_MD_SIZE];
824 size_t resultlength;
825
826 /* Note: we check cookie_initialized because if it's not,
827 * it cannot be valid */
828 if (cookie_initialized
829 && generate_stateless_cookie_callback(ssl, result, &resultlength)
830 && cookie_len == resultlength
831 && memcmp(result, cookie, resultlength) == 0)
832 return 1;
833
834 return 0;
835 }
836
837 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
838 unsigned int *cookie_len)
839 {
840 size_t temp = 0;
841 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
842
843 if (res != 0)
844 *cookie_len = (unsigned int)temp;
845 return res;
846 }
847
848 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
849 unsigned int cookie_len)
850 {
851 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
852 }
853
854 #endif
855
856 /*
857 * Example of extended certificate handling. Where the standard support of
858 * one certificate per algorithm is not sufficient an application can decide
859 * which certificate(s) to use at runtime based on whatever criteria it deems
860 * appropriate.
861 */
862
863 /* Linked list of certificates, keys and chains */
864 struct ssl_excert_st {
865 int certform;
866 const char *certfile;
867 int keyform;
868 const char *keyfile;
869 const char *chainfile;
870 X509 *cert;
871 EVP_PKEY *key;
872 STACK_OF(X509) *chain;
873 int build_chain;
874 struct ssl_excert_st *next, *prev;
875 };
876
877 static STRINT_PAIR chain_flags[] = {
878 {"Overall Validity", CERT_PKEY_VALID},
879 {"Sign with EE key", CERT_PKEY_SIGN},
880 {"EE signature", CERT_PKEY_EE_SIGNATURE},
881 {"CA signature", CERT_PKEY_CA_SIGNATURE},
882 {"EE key parameters", CERT_PKEY_EE_PARAM},
883 {"CA key parameters", CERT_PKEY_CA_PARAM},
884 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
885 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
886 {"Certificate Type", CERT_PKEY_CERT_TYPE},
887 {NULL}
888 };
889
890 static void print_chain_flags(SSL *s, int flags)
891 {
892 STRINT_PAIR *pp;
893
894 for (pp = chain_flags; pp->name; ++pp)
895 BIO_printf(bio_err, "\t%s: %s\n",
896 pp->name,
897 (flags & pp->retval) ? "OK" : "NOT OK");
898 BIO_printf(bio_err, "\tSuite B: ");
899 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
900 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
901 else
902 BIO_printf(bio_err, "not tested\n");
903 }
904
905 /*
906 * Very basic selection callback: just use any certificate chain reported as
907 * valid. More sophisticated could prioritise according to local policy.
908 */
909 static int set_cert_cb(SSL *ssl, void *arg)
910 {
911 int i, rv;
912 SSL_EXCERT *exc = arg;
913 #ifdef CERT_CB_TEST_RETRY
914 static int retry_cnt;
915
916 if (retry_cnt < 5) {
917 retry_cnt++;
918 BIO_printf(bio_err,
919 "Certificate callback retry test: count %d\n",
920 retry_cnt);
921 return -1;
922 }
923 #endif
924 SSL_certs_clear(ssl);
925
926 if (exc == NULL)
927 return 1;
928
929 /*
930 * Go to end of list and traverse backwards since we prepend newer
931 * entries this retains the original order.
932 */
933 while (exc->next != NULL)
934 exc = exc->next;
935
936 i = 0;
937
938 while (exc != NULL) {
939 i++;
940 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
941 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
942 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
943 get_nameopt());
944 BIO_puts(bio_err, "\n");
945 print_chain_flags(ssl, rv);
946 if (rv & CERT_PKEY_VALID) {
947 if (!SSL_use_certificate(ssl, exc->cert)
948 || !SSL_use_PrivateKey(ssl, exc->key)) {
949 return 0;
950 }
951 /*
952 * NB: we wouldn't normally do this as it is not efficient
953 * building chains on each connection better to cache the chain
954 * in advance.
955 */
956 if (exc->build_chain) {
957 if (!SSL_build_cert_chain(ssl, 0))
958 return 0;
959 } else if (exc->chain != NULL) {
960 if (!SSL_set1_chain(ssl, exc->chain))
961 return 0;
962 }
963 }
964 exc = exc->prev;
965 }
966 return 1;
967 }
968
969 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
970 {
971 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
972 }
973
974 static int ssl_excert_prepend(SSL_EXCERT **pexc)
975 {
976 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
977
978 memset(exc, 0, sizeof(*exc));
979
980 exc->next = *pexc;
981 *pexc = exc;
982
983 if (exc->next) {
984 exc->certform = exc->next->certform;
985 exc->keyform = exc->next->keyform;
986 exc->next->prev = exc;
987 } else {
988 exc->certform = FORMAT_PEM;
989 exc->keyform = FORMAT_PEM;
990 }
991 return 1;
992
993 }
994
995 void ssl_excert_free(SSL_EXCERT *exc)
996 {
997 SSL_EXCERT *curr;
998
999 if (exc == NULL)
1000 return;
1001 while (exc) {
1002 X509_free(exc->cert);
1003 EVP_PKEY_free(exc->key);
1004 OSSL_STACK_OF_X509_free(exc->chain);
1005 curr = exc;
1006 exc = exc->next;
1007 OPENSSL_free(curr);
1008 }
1009 }
1010
1011 int load_excert(SSL_EXCERT **pexc)
1012 {
1013 SSL_EXCERT *exc = *pexc;
1014
1015 if (exc == NULL)
1016 return 1;
1017 /* If nothing in list, free and set to NULL */
1018 if (exc->certfile == NULL && exc->next == NULL) {
1019 ssl_excert_free(exc);
1020 *pexc = NULL;
1021 return 1;
1022 }
1023 for (; exc; exc = exc->next) {
1024 if (exc->certfile == NULL) {
1025 BIO_printf(bio_err, "Missing filename\n");
1026 return 0;
1027 }
1028 exc->cert = load_cert(exc->certfile, exc->certform,
1029 "Server Certificate");
1030 if (exc->cert == NULL)
1031 return 0;
1032 if (exc->keyfile != NULL) {
1033 exc->key = load_key(exc->keyfile, exc->keyform,
1034 0, NULL, NULL, "server key");
1035 } else {
1036 exc->key = load_key(exc->certfile, exc->certform,
1037 0, NULL, NULL, "server key");
1038 }
1039 if (exc->key == NULL)
1040 return 0;
1041 if (exc->chainfile != NULL) {
1042 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1043 return 0;
1044 }
1045 }
1046 return 1;
1047 }
1048
1049 enum range { OPT_X_ENUM };
1050
1051 int args_excert(int opt, SSL_EXCERT **pexc)
1052 {
1053 SSL_EXCERT *exc = *pexc;
1054
1055 assert(opt > OPT_X__FIRST);
1056 assert(opt < OPT_X__LAST);
1057
1058 if (exc == NULL) {
1059 if (!ssl_excert_prepend(&exc)) {
1060 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1061 opt_getprog());
1062 goto err;
1063 }
1064 *pexc = exc;
1065 }
1066
1067 switch ((enum range)opt) {
1068 case OPT_X__FIRST:
1069 case OPT_X__LAST:
1070 return 0;
1071 case OPT_X_CERT:
1072 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1073 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1074 goto err;
1075 }
1076 *pexc = exc;
1077 exc->certfile = opt_arg();
1078 break;
1079 case OPT_X_KEY:
1080 if (exc->keyfile != NULL) {
1081 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1082 goto err;
1083 }
1084 exc->keyfile = opt_arg();
1085 break;
1086 case OPT_X_CHAIN:
1087 if (exc->chainfile != NULL) {
1088 BIO_printf(bio_err, "%s: Chain already specified\n",
1089 opt_getprog());
1090 goto err;
1091 }
1092 exc->chainfile = opt_arg();
1093 break;
1094 case OPT_X_CHAIN_BUILD:
1095 exc->build_chain = 1;
1096 break;
1097 case OPT_X_CERTFORM:
1098 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1099 return 0;
1100 break;
1101 case OPT_X_KEYFORM:
1102 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1103 return 0;
1104 break;
1105 }
1106 return 1;
1107
1108 err:
1109 ERR_print_errors(bio_err);
1110 ssl_excert_free(exc);
1111 *pexc = NULL;
1112 return 0;
1113 }
1114
1115 static void print_raw_cipherlist(SSL *s)
1116 {
1117 const unsigned char *rlist;
1118 static const unsigned char scsv_id[] = { 0, 0xFF };
1119 size_t i, rlistlen, num;
1120
1121 if (!SSL_is_server(s))
1122 return;
1123 num = SSL_get0_raw_cipherlist(s, NULL);
1124 OPENSSL_assert(num == 2);
1125 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1126 BIO_puts(bio_err, "Client cipher list: ");
1127 for (i = 0; i < rlistlen; i += num, rlist += num) {
1128 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1129 if (i)
1130 BIO_puts(bio_err, ":");
1131 if (c != NULL) {
1132 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1133 } else if (memcmp(rlist, scsv_id, num) == 0) {
1134 BIO_puts(bio_err, "SCSV");
1135 } else {
1136 size_t j;
1137 BIO_puts(bio_err, "0x");
1138 for (j = 0; j < num; j++)
1139 BIO_printf(bio_err, "%02X", rlist[j]);
1140 }
1141 }
1142 BIO_puts(bio_err, "\n");
1143 }
1144
1145 /*
1146 * Hex encoder for TLSA RRdata, not ':' delimited.
1147 */
1148 static char *hexencode(const unsigned char *data, size_t len)
1149 {
1150 static const char *hex = "0123456789abcdef";
1151 char *out;
1152 char *cp;
1153 size_t outlen = 2 * len + 1;
1154 int ilen = (int) outlen;
1155
1156 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1157 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1158 opt_getprog(), len);
1159 exit(1);
1160 }
1161 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1162
1163 while (len-- > 0) {
1164 *cp++ = hex[(*data >> 4) & 0x0f];
1165 *cp++ = hex[*data++ & 0x0f];
1166 }
1167 *cp = '\0';
1168 return out;
1169 }
1170
1171 void print_verify_detail(SSL *s, BIO *bio)
1172 {
1173 int mdpth;
1174 EVP_PKEY *mspki;
1175 long verify_err = SSL_get_verify_result(s);
1176
1177 if (verify_err == X509_V_OK) {
1178 const char *peername = SSL_get0_peername(s);
1179
1180 BIO_printf(bio, "Verification: OK\n");
1181 if (peername != NULL)
1182 BIO_printf(bio, "Verified peername: %s\n", peername);
1183 } else {
1184 const char *reason = X509_verify_cert_error_string(verify_err);
1185
1186 BIO_printf(bio, "Verification error: %s\n", reason);
1187 }
1188
1189 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1190 uint8_t usage, selector, mtype;
1191 const unsigned char *data = NULL;
1192 size_t dlen = 0;
1193 char *hexdata;
1194
1195 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1196
1197 /*
1198 * The TLSA data field can be quite long when it is a certificate,
1199 * public key or even a SHA2-512 digest. Because the initial octets of
1200 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1201 * and lengths, we show the last 12 bytes of the data instead, as these
1202 * are more likely to distinguish distinct TLSA records.
1203 */
1204 #define TLSA_TAIL_SIZE 12
1205 if (dlen > TLSA_TAIL_SIZE)
1206 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1207 else
1208 hexdata = hexencode(data, dlen);
1209 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1210 usage, selector, mtype,
1211 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1212 (mspki != NULL) ? "signed the certificate" :
1213 mdpth ? "matched TA certificate" : "matched EE certificate",
1214 mdpth);
1215 OPENSSL_free(hexdata);
1216 }
1217 }
1218
1219 void print_ssl_summary(SSL *s)
1220 {
1221 const SSL_CIPHER *c;
1222 X509 *peer;
1223
1224 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1225 print_raw_cipherlist(s);
1226 c = SSL_get_current_cipher(s);
1227 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1228 do_print_sigalgs(bio_err, s, 0);
1229 peer = SSL_get0_peer_certificate(s);
1230 if (peer != NULL) {
1231 int nid;
1232
1233 BIO_puts(bio_err, "Peer certificate: ");
1234 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1235 0, get_nameopt());
1236 BIO_puts(bio_err, "\n");
1237 if (SSL_get_peer_signature_nid(s, &nid))
1238 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1239 if (SSL_get_peer_signature_type_nid(s, &nid))
1240 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1241 print_verify_detail(s, bio_err);
1242 } else {
1243 BIO_puts(bio_err, "No peer certificate\n");
1244 }
1245 #ifndef OPENSSL_NO_EC
1246 ssl_print_point_formats(bio_err, s);
1247 if (SSL_is_server(s))
1248 ssl_print_groups(bio_err, s, 1);
1249 else
1250 ssl_print_tmp_key(bio_err, s);
1251 #else
1252 if (!SSL_is_server(s))
1253 ssl_print_tmp_key(bio_err, s);
1254 #endif
1255 }
1256
1257 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1258 SSL_CTX *ctx)
1259 {
1260 int i;
1261
1262 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1263 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1264 const char *flag = sk_OPENSSL_STRING_value(str, i);
1265 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1266
1267 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1268 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1269 flag, arg == NULL ? "<NULL>" : arg);
1270 ERR_print_errors(bio_err);
1271 return 0;
1272 }
1273 }
1274 if (!SSL_CONF_CTX_finish(cctx)) {
1275 BIO_puts(bio_err, "Error finishing context\n");
1276 ERR_print_errors(bio_err);
1277 return 0;
1278 }
1279 return 1;
1280 }
1281
1282 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1283 {
1284 X509_CRL *crl;
1285 int i, ret = 1;
1286
1287 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1288 crl = sk_X509_CRL_value(crls, i);
1289 if (!X509_STORE_add_crl(st, crl))
1290 ret = 0;
1291 }
1292 return ret;
1293 }
1294
1295 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1296 {
1297 X509_STORE *st;
1298
1299 st = SSL_CTX_get_cert_store(ctx);
1300 add_crls_store(st, crls);
1301 if (crl_download)
1302 store_setup_crl_download(st);
1303 return 1;
1304 }
1305
1306 int ssl_load_stores(SSL_CTX *ctx,
1307 const char *vfyCApath, const char *vfyCAfile,
1308 const char *vfyCAstore,
1309 const char *chCApath, const char *chCAfile,
1310 const char *chCAstore,
1311 STACK_OF(X509_CRL) *crls, int crl_download)
1312 {
1313 X509_STORE *vfy = NULL, *ch = NULL;
1314 int rv = 0;
1315
1316 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1317 vfy = X509_STORE_new();
1318 if (vfy == NULL)
1319 goto err;
1320 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1321 goto err;
1322 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1323 goto err;
1324 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1325 goto err;
1326 add_crls_store(vfy, crls);
1327 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1328 if (crl_download)
1329 store_setup_crl_download(vfy);
1330 }
1331 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1332 ch = X509_STORE_new();
1333 if (ch == NULL)
1334 goto err;
1335 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1336 goto err;
1337 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1338 goto err;
1339 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1340 goto err;
1341 SSL_CTX_set1_chain_cert_store(ctx, ch);
1342 }
1343 rv = 1;
1344 err:
1345 X509_STORE_free(vfy);
1346 X509_STORE_free(ch);
1347 return rv;
1348 }
1349
1350 /* Verbose print out of security callback */
1351
1352 typedef struct {
1353 BIO *out;
1354 int verbose;
1355 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1356 void *other, void *ex);
1357 } security_debug_ex;
1358
1359 static STRINT_PAIR callback_types[] = {
1360 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1361 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1362 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1363 #ifndef OPENSSL_NO_DH
1364 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1365 #endif
1366 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1367 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1368 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1369 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1370 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1371 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1372 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1373 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1374 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1375 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1376 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1377 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1378 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1379 {"SSL compression", SSL_SECOP_COMPRESSION},
1380 {"Session ticket", SSL_SECOP_TICKET},
1381 {NULL}
1382 };
1383
1384 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1385 int op, int bits, int nid,
1386 void *other, void *ex)
1387 {
1388 security_debug_ex *sdb = ex;
1389 int rv, show_bits = 1, cert_md = 0;
1390 const char *nm;
1391 int show_nm;
1392
1393 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1394 if (rv == 1 && sdb->verbose < 2)
1395 return 1;
1396 BIO_puts(sdb->out, "Security callback: ");
1397
1398 nm = lookup(op, callback_types, NULL);
1399 show_nm = nm != NULL;
1400 switch (op) {
1401 case SSL_SECOP_TICKET:
1402 case SSL_SECOP_COMPRESSION:
1403 show_bits = 0;
1404 show_nm = 0;
1405 break;
1406 case SSL_SECOP_VERSION:
1407 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1408 show_bits = 0;
1409 show_nm = 0;
1410 break;
1411 case SSL_SECOP_CA_MD:
1412 case SSL_SECOP_PEER_CA_MD:
1413 cert_md = 1;
1414 break;
1415 case SSL_SECOP_SIGALG_SUPPORTED:
1416 case SSL_SECOP_SIGALG_SHARED:
1417 case SSL_SECOP_SIGALG_CHECK:
1418 case SSL_SECOP_SIGALG_MASK:
1419 show_nm = 0;
1420 break;
1421 }
1422 if (show_nm)
1423 BIO_printf(sdb->out, "%s=", nm);
1424
1425 switch (op & SSL_SECOP_OTHER_TYPE) {
1426
1427 case SSL_SECOP_OTHER_CIPHER:
1428 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1429 break;
1430
1431 #ifndef OPENSSL_NO_EC
1432 case SSL_SECOP_OTHER_CURVE:
1433 {
1434 const char *cname;
1435 cname = EC_curve_nid2nist(nid);
1436 if (cname == NULL)
1437 cname = OBJ_nid2sn(nid);
1438 BIO_puts(sdb->out, cname);
1439 }
1440 break;
1441 #endif
1442 case SSL_SECOP_OTHER_CERT:
1443 {
1444 if (cert_md) {
1445 int sig_nid = X509_get_signature_nid(other);
1446
1447 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1448 } else {
1449 EVP_PKEY *pkey = X509_get0_pubkey(other);
1450
1451 if (pkey == NULL) {
1452 BIO_printf(sdb->out, "Public key missing");
1453 } else {
1454 const char *algname = "";
1455
1456 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1457 &algname, EVP_PKEY_get0_asn1(pkey));
1458 BIO_printf(sdb->out, "%s, bits=%d",
1459 algname, EVP_PKEY_get_bits(pkey));
1460 }
1461 }
1462 break;
1463 }
1464 case SSL_SECOP_OTHER_SIGALG:
1465 {
1466 const unsigned char *salg = other;
1467 const char *sname = NULL;
1468 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1469 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1470
1471 if (nm != NULL)
1472 BIO_printf(sdb->out, "%s", nm);
1473 else
1474 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1475
1476 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1477 if (sname != NULL) {
1478 BIO_printf(sdb->out, " scheme=%s", sname);
1479 } else {
1480 int alg_code = salg[1];
1481 int hash_code = salg[0];
1482 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1483 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1484
1485 if (alg_str != NULL && hash_str != NULL)
1486 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1487 else
1488 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1489 }
1490 }
1491
1492 }
1493
1494 if (show_bits)
1495 BIO_printf(sdb->out, ", security bits=%d", bits);
1496 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1497 return rv;
1498 }
1499
1500 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1501 {
1502 static security_debug_ex sdb;
1503
1504 sdb.out = bio_err;
1505 sdb.verbose = verbose;
1506 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1507 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1508 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1509 }
1510
1511 static void keylog_callback(const SSL *ssl, const char *line)
1512 {
1513 if (bio_keylog == NULL) {
1514 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1515 return;
1516 }
1517
1518 /*
1519 * There might be concurrent writers to the keylog file, so we must ensure
1520 * that the given line is written at once.
1521 */
1522 BIO_printf(bio_keylog, "%s\n", line);
1523 (void)BIO_flush(bio_keylog);
1524 }
1525
1526 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1527 {
1528 /* Close any open files */
1529 BIO_free_all(bio_keylog);
1530 bio_keylog = NULL;
1531
1532 if (ctx == NULL || keylog_file == NULL) {
1533 /* Keylogging is disabled, OK. */
1534 return 0;
1535 }
1536
1537 /*
1538 * Append rather than write in order to allow concurrent modification.
1539 * Furthermore, this preserves existing keylog files which is useful when
1540 * the tool is run multiple times.
1541 */
1542 bio_keylog = BIO_new_file(keylog_file, "a");
1543 if (bio_keylog == NULL) {
1544 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1545 return 1;
1546 }
1547
1548 /* Write a header for seekable, empty files (this excludes pipes). */
1549 if (BIO_tell(bio_keylog) == 0) {
1550 BIO_puts(bio_keylog,
1551 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1552 (void)BIO_flush(bio_keylog);
1553 }
1554 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1555 return 0;
1556 }
1557
1558 void print_ca_names(BIO *bio, SSL *s)
1559 {
1560 const char *cs = SSL_is_server(s) ? "server" : "client";
1561 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1562 int i;
1563
1564 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1565 if (!SSL_is_server(s))
1566 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1567 return;
1568 }
1569
1570 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n", cs);
1571 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1572 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1573 BIO_write(bio, "\n", 1);
1574 }
1575 }
1576
1577 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s)
1578 {
1579 if (SSL_VERSION_ALLOWS_RENEGOTIATION(s)) {
1580 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1581 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1582 } else {
1583 BIO_printf(bio, "This TLS version forbids renegotiation.\n");
1584 }
1585 }
1586
1587 int progress_cb(EVP_PKEY_CTX *ctx)
1588 {
1589 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1590 int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1591 static const char symbols[] = ".+*\n";
1592 char c = (p >= 0 && (size_t)p <= sizeof(symbols) - 1) ? symbols[p] : '?';
1593
1594 BIO_write(b, &c, 1);
1595 (void)BIO_flush(b);
1596 return 1;
1597 }
1598
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