1 /*
2 * Copyright 1995-2025 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
lookup(int val,const STRINT_PAIR * list,const char * def)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
verify_callback(int ok,X509_STORE_CTX * ctx)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
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)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)
122 <= 0) {
123 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
124 cert_file);
125 ERR_print_errors(bio_err);
126 return 0;
127 }
128 if (key_file == NULL)
129 key_file = cert_file;
130 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
131 BIO_printf(bio_err, "unable to get private key from '%s'\n",
132 key_file);
133 ERR_print_errors(bio_err);
134 return 0;
135 }
136
137 /*
138 * If we are using DSA, we can copy the parameters from the private
139 * key
140 */
141
142 /*
143 * Now we know that a key and cert have been set against the SSL
144 * context
145 */
146 if (!SSL_CTX_check_private_key(ctx)) {
147 BIO_printf(bio_err,
148 "Private key does not match the certificate public key\n");
149 return 0;
150 }
151 }
152 return 1;
153 }
154
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)155 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
156 STACK_OF(X509) *chain, int build_chain)
157 {
158 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
159
160 if (cert == NULL)
161 return 1;
162 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
163 BIO_printf(bio_err, "error setting certificate\n");
164 ERR_print_errors(bio_err);
165 return 0;
166 }
167
168 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
169 BIO_printf(bio_err, "error setting private key\n");
170 ERR_print_errors(bio_err);
171 return 0;
172 }
173
174 /*
175 * Now we know that a key and cert have been set against the SSL context
176 */
177 if (!SSL_CTX_check_private_key(ctx)) {
178 BIO_printf(bio_err,
179 "Private key does not match the certificate public key\n");
180 return 0;
181 }
182 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
183 BIO_printf(bio_err, "error setting certificate chain\n");
184 ERR_print_errors(bio_err);
185 return 0;
186 }
187 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
188 BIO_printf(bio_err, "error building certificate chain\n");
189 ERR_print_errors(bio_err);
190 return 0;
191 }
192 return 1;
193 }
194
195 static STRINT_PAIR cert_type_list[] = {
196 { "RSA sign", TLS_CT_RSA_SIGN },
197 { "DSA sign", TLS_CT_DSS_SIGN },
198 { "RSA fixed DH", TLS_CT_RSA_FIXED_DH },
199 { "DSS fixed DH", TLS_CT_DSS_FIXED_DH },
200 { "ECDSA sign", TLS_CT_ECDSA_SIGN },
201 { "RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH },
202 { "ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH },
203 { "GOST01 Sign", TLS_CT_GOST01_SIGN },
204 { "GOST12 Sign", TLS_CT_GOST12_IANA_SIGN },
205 { NULL }
206 };
207
ssl_print_client_cert_types(BIO * bio,SSL * s)208 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
209 {
210 const unsigned char *p;
211 int i;
212 int cert_type_num = SSL_get0_certificate_types(s, &p);
213
214 if (!cert_type_num)
215 return;
216 BIO_puts(bio, "Client Certificate Types: ");
217 for (i = 0; i < cert_type_num; i++) {
218 unsigned char cert_type = p[i];
219 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
220
221 if (i)
222 BIO_puts(bio, ", ");
223 if (cname != NULL)
224 BIO_puts(bio, cname);
225 else
226 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
227 }
228 BIO_puts(bio, "\n");
229 }
230
get_sigtype(int nid)231 static const char *get_sigtype(int nid)
232 {
233 switch (nid) {
234 case EVP_PKEY_RSA:
235 return "RSA";
236
237 case EVP_PKEY_RSA_PSS:
238 return "RSA-PSS";
239
240 case EVP_PKEY_DSA:
241 return "DSA";
242
243 case EVP_PKEY_EC:
244 return "ECDSA";
245
246 case NID_ED25519:
247 return "ed25519";
248
249 case NID_ED448:
250 return "ed448";
251
252 case NID_id_GostR3410_2001:
253 return "gost2001";
254
255 case NID_id_GostR3410_2012_256:
256 return "gost2012_256";
257
258 case NID_id_GostR3410_2012_512:
259 return "gost2012_512";
260
261 default:
262 /* Try to output provider-registered sig alg name */
263 return OBJ_nid2sn(nid);
264 }
265 }
266
do_print_sigalgs(BIO * out,SSL * s,int shared)267 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
268 {
269 int i, nsig, client;
270
271 client = SSL_is_server(s) ? 0 : 1;
272 if (shared)
273 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
274 else
275 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
276 if (nsig == 0)
277 return 1;
278
279 if (shared)
280 BIO_puts(out, "Shared ");
281
282 if (client)
283 BIO_puts(out, "Requested ");
284 BIO_puts(out, "Signature Algorithms: ");
285 for (i = 0; i < nsig; i++) {
286 int hash_nid, sign_nid;
287 unsigned char rhash, rsign;
288 const char *sstr = NULL;
289 if (shared)
290 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
291 &rsign, &rhash);
292 else
293 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
294 if (i)
295 BIO_puts(out, ":");
296 switch (rsign | rhash << 8) {
297 case 0x0809:
298 BIO_puts(out, "rsa_pss_pss_sha256");
299 continue;
300 case 0x080a:
301 BIO_puts(out, "rsa_pss_pss_sha384");
302 continue;
303 case 0x080b:
304 BIO_puts(out, "rsa_pss_pss_sha512");
305 continue;
306 case 0x081a:
307 BIO_puts(out, "ecdsa_brainpoolP256r1_sha256");
308 continue;
309 case 0x081b:
310 BIO_puts(out, "ecdsa_brainpoolP384r1_sha384");
311 continue;
312 case 0x081c:
313 BIO_puts(out, "ecdsa_brainpoolP512r1_sha512");
314 continue;
315 }
316 sstr = get_sigtype(sign_nid);
317 if (sstr)
318 BIO_printf(out, "%s", sstr);
319 else
320 BIO_printf(out, "0x%02X", (int)rsign);
321 if (hash_nid != NID_undef)
322 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
323 else if (sstr == NULL)
324 BIO_printf(out, "+0x%02X", (int)rhash);
325 }
326 BIO_puts(out, "\n");
327 return 1;
328 }
329
ssl_print_sigalgs(BIO * out,SSL * s)330 int ssl_print_sigalgs(BIO *out, SSL *s)
331 {
332 const char *name;
333 int nid;
334
335 if (!SSL_is_server(s))
336 ssl_print_client_cert_types(out, s);
337 do_print_sigalgs(out, s, 0);
338 do_print_sigalgs(out, s, 1);
339 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
340 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
341 if (SSL_get0_peer_signature_name(s, &name))
342 BIO_printf(out, "Peer signature type: %s\n", name);
343 else if (SSL_get_peer_signature_type_nid(s, &nid))
344 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
345 return 1;
346 }
347
348 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)349 int ssl_print_point_formats(BIO *out, SSL *s)
350 {
351 int i, nformats;
352 const char *pformats;
353
354 nformats = SSL_get0_ec_point_formats(s, &pformats);
355 if (nformats <= 0)
356 return 1;
357 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
358 for (i = 0; i < nformats; i++, pformats++) {
359 if (i)
360 BIO_puts(out, ":");
361 switch (*pformats) {
362 case TLSEXT_ECPOINTFORMAT_uncompressed:
363 BIO_puts(out, "uncompressed");
364 break;
365
366 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
367 BIO_puts(out, "ansiX962_compressed_prime");
368 break;
369
370 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
371 BIO_puts(out, "ansiX962_compressed_char2");
372 break;
373
374 default:
375 BIO_printf(out, "unknown(%d)", (int)*pformats);
376 break;
377 }
378 }
379 BIO_puts(out, "\n");
380 return 1;
381 }
382
ssl_print_groups(BIO * out,SSL * s,int noshared)383 int ssl_print_groups(BIO *out, SSL *s, int noshared)
384 {
385 int i, ngroups, *groups, nid;
386
387 ngroups = SSL_get1_groups(s, NULL);
388 if (ngroups <= 0)
389 return 1;
390 groups = app_malloc(ngroups * sizeof(int), "groups to print");
391 SSL_get1_groups(s, groups);
392
393 BIO_puts(out, "Supported groups: ");
394 for (i = 0; i < ngroups; i++) {
395 if (i)
396 BIO_puts(out, ":");
397 nid = groups[i];
398 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
399 }
400 OPENSSL_free(groups);
401 if (noshared) {
402 BIO_puts(out, "\n");
403 return 1;
404 }
405 BIO_puts(out, "\nShared groups: ");
406 ngroups = SSL_get_shared_group(s, -1);
407 for (i = 0; i < ngroups; i++) {
408 if (i)
409 BIO_puts(out, ":");
410 nid = SSL_get_shared_group(s, i);
411 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
412 }
413 if (ngroups == 0)
414 BIO_puts(out, "NONE");
415 BIO_puts(out, "\n");
416 return 1;
417 }
418 #endif
419
ssl_print_tmp_key(BIO * out,SSL * s)420 int ssl_print_tmp_key(BIO *out, SSL *s)
421 {
422 const char *keyname;
423 EVP_PKEY *key;
424
425 if (!SSL_get_peer_tmp_key(s, &key)) {
426 if (SSL_version(s) == TLS1_3_VERSION)
427 BIO_printf(out, "Negotiated TLS1.3 group: %s\n",
428 SSL_group_to_name(s, SSL_get_negotiated_group(s)));
429 return 1;
430 }
431
432 BIO_puts(out, "Peer Temp Key: ");
433 switch (EVP_PKEY_get_id(key)) {
434 case EVP_PKEY_RSA:
435 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
436 break;
437
438 case EVP_PKEY_KEYMGMT:
439 if ((keyname = EVP_PKEY_get0_type_name(key)) == NULL)
440 keyname = "?";
441 BIO_printf(out, "%s\n", keyname);
442 break;
443
444 case EVP_PKEY_DH:
445 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
446 break;
447 #ifndef OPENSSL_NO_EC
448 case EVP_PKEY_EC: {
449 char name[80];
450 size_t name_len;
451
452 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
453 name, sizeof(name), &name_len))
454 strcpy(name, "?");
455 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
456 } break;
457 #endif
458 default:
459 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
460 EVP_PKEY_get_bits(key));
461 }
462 EVP_PKEY_free(key);
463 return 1;
464 }
465
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)466 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
467 int argi, long argl, int ret, size_t *processed)
468 {
469 BIO *out;
470 BIO_MMSG_CB_ARGS *mmsgargs;
471 size_t i;
472
473 out = (BIO *)BIO_get_callback_arg(bio);
474 if (out == NULL)
475 return ret;
476
477 switch (cmd) {
478 case (BIO_CB_READ | BIO_CB_RETURN):
479 if (ret > 0 && processed != NULL) {
480 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
481 (void *)bio, (void *)argp, len, *processed, *processed);
482 BIO_dump(out, argp, (int)*processed);
483 } else {
484 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
485 (void *)bio, (void *)argp, len, ret);
486 }
487 break;
488
489 case (BIO_CB_WRITE | BIO_CB_RETURN):
490 if (ret > 0 && processed != NULL) {
491 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
492 (void *)bio, (void *)argp, len, *processed, *processed);
493 BIO_dump(out, argp, (int)*processed);
494 } else {
495 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
496 (void *)bio, (void *)argp, len, ret);
497 }
498 break;
499
500 case (BIO_CB_RECVMMSG | BIO_CB_RETURN):
501 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
502 if (ret > 0) {
503 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
504 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
505 + (i * mmsgargs->stride));
506
507 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
508 (void *)bio, (void *)msg->data, msg->data_len,
509 msg->data_len, msg->data_len);
510 BIO_dump(out, msg->data, msg->data_len);
511 }
512 } else if (mmsgargs->num_msg > 0) {
513 BIO_MSG *msg = mmsgargs->msg;
514
515 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
516 (void *)bio, (void *)msg->data, msg->data_len, ret);
517 }
518 break;
519
520 case (BIO_CB_SENDMMSG | BIO_CB_RETURN):
521 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
522 if (ret > 0) {
523 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
524 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
525 + (i * mmsgargs->stride));
526
527 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
528 (void *)bio, (void *)msg->data, msg->data_len,
529 msg->data_len, msg->data_len);
530 BIO_dump(out, msg->data, msg->data_len);
531 }
532 } else if (mmsgargs->num_msg > 0) {
533 BIO_MSG *msg = mmsgargs->msg;
534
535 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
536 (void *)bio, (void *)msg->data, msg->data_len, ret);
537 }
538 break;
539
540 default:
541 /* do nothing */
542 break;
543 }
544 return ret;
545 }
546
apps_ssl_info_callback(const SSL * s,int where,int ret)547 void apps_ssl_info_callback(const SSL *s, int where, int ret)
548 {
549 const char *str;
550 int w;
551
552 w = where & ~SSL_ST_MASK;
553
554 if (w & SSL_ST_CONNECT)
555 str = "SSL_connect";
556 else if (w & SSL_ST_ACCEPT)
557 str = "SSL_accept";
558 else
559 str = "undefined";
560
561 if (where & SSL_CB_LOOP) {
562 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
563 } else if (where & SSL_CB_ALERT) {
564 str = (where & SSL_CB_READ) ? "read" : "write";
565 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
566 str,
567 SSL_alert_type_string_long(ret),
568 SSL_alert_desc_string_long(ret));
569 } else if (where & SSL_CB_EXIT) {
570 if (ret == 0)
571 BIO_printf(bio_err, "%s:failed in %s\n",
572 str, SSL_state_string_long(s));
573 else if (ret < 0)
574 BIO_printf(bio_err, "%s:error in %s\n",
575 str, SSL_state_string_long(s));
576 }
577 }
578
579 static STRINT_PAIR ssl_versions[] = {
580 { "SSL 3.0", SSL3_VERSION },
581 { "TLS 1.0", TLS1_VERSION },
582 { "TLS 1.1", TLS1_1_VERSION },
583 { "TLS 1.2", TLS1_2_VERSION },
584 { "TLS 1.3", TLS1_3_VERSION },
585 { "DTLS 1.0", DTLS1_VERSION },
586 { "DTLS 1.0 (bad)", DTLS1_BAD_VER },
587 { NULL }
588 };
589
590 static STRINT_PAIR alert_types[] = {
591 { " close_notify", 0 },
592 { " end_of_early_data", 1 },
593 { " unexpected_message", 10 },
594 { " bad_record_mac", 20 },
595 { " decryption_failed", 21 },
596 { " record_overflow", 22 },
597 { " decompression_failure", 30 },
598 { " handshake_failure", 40 },
599 { " bad_certificate", 42 },
600 { " unsupported_certificate", 43 },
601 { " certificate_revoked", 44 },
602 { " certificate_expired", 45 },
603 { " certificate_unknown", 46 },
604 { " illegal_parameter", 47 },
605 { " unknown_ca", 48 },
606 { " access_denied", 49 },
607 { " decode_error", 50 },
608 { " decrypt_error", 51 },
609 { " export_restriction", 60 },
610 { " protocol_version", 70 },
611 { " insufficient_security", 71 },
612 { " internal_error", 80 },
613 { " inappropriate_fallback", 86 },
614 { " user_canceled", 90 },
615 { " no_renegotiation", 100 },
616 { " missing_extension", 109 },
617 { " unsupported_extension", 110 },
618 { " certificate_unobtainable", 111 },
619 { " unrecognized_name", 112 },
620 { " bad_certificate_status_response", 113 },
621 { " bad_certificate_hash_value", 114 },
622 { " unknown_psk_identity", 115 },
623 { " certificate_required", 116 },
624 { NULL }
625 };
626
627 static STRINT_PAIR handshakes[] = {
628 { ", HelloRequest", SSL3_MT_HELLO_REQUEST },
629 { ", ClientHello", SSL3_MT_CLIENT_HELLO },
630 { ", ServerHello", SSL3_MT_SERVER_HELLO },
631 { ", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST },
632 { ", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET },
633 { ", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA },
634 { ", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS },
635 { ", Certificate", SSL3_MT_CERTIFICATE },
636 { ", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE },
637 { ", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST },
638 { ", ServerHelloDone", SSL3_MT_SERVER_DONE },
639 { ", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY },
640 { ", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE },
641 { ", Finished", SSL3_MT_FINISHED },
642 { ", CertificateUrl", SSL3_MT_CERTIFICATE_URL },
643 { ", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS },
644 { ", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA },
645 { ", KeyUpdate", SSL3_MT_KEY_UPDATE },
646 { ", CompressedCertificate", SSL3_MT_COMPRESSED_CERTIFICATE },
647 #ifndef OPENSSL_NO_NEXTPROTONEG
648 { ", NextProto", SSL3_MT_NEXT_PROTO },
649 #endif
650 { ", MessageHash", SSL3_MT_MESSAGE_HASH },
651 { NULL }
652 };
653
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)654 void msg_cb(int write_p, int version, int content_type, const void *buf,
655 size_t len, SSL *ssl, void *arg)
656 {
657 BIO *bio = arg;
658 const char *str_write_p = write_p ? ">>>" : "<<<";
659 char tmpbuf[128];
660 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
661 const unsigned char *bp = buf;
662
663 if (version == SSL3_VERSION || version == TLS1_VERSION || version == TLS1_1_VERSION || version == TLS1_2_VERSION || version == TLS1_3_VERSION || version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
664 str_version = lookup(version, ssl_versions, "???");
665 switch (content_type) {
666 case SSL3_RT_CHANGE_CIPHER_SPEC:
667 /* type 20 */
668 str_content_type = ", ChangeCipherSpec";
669 break;
670 case SSL3_RT_ALERT:
671 /* type 21 */
672 str_content_type = ", Alert";
673 str_details1 = ", ???";
674 if (len == 2) {
675 switch (bp[0]) {
676 case 1:
677 str_details1 = ", warning";
678 break;
679 case 2:
680 str_details1 = ", fatal";
681 break;
682 }
683 str_details2 = lookup((int)bp[1], alert_types, " ???");
684 }
685 break;
686 case SSL3_RT_HANDSHAKE:
687 /* type 22 */
688 str_content_type = ", Handshake";
689 str_details1 = "???";
690 if (len > 0)
691 str_details1 = lookup((int)bp[0], handshakes, "???");
692 break;
693 case SSL3_RT_APPLICATION_DATA:
694 /* type 23 */
695 str_content_type = ", ApplicationData";
696 break;
697 case SSL3_RT_HEADER:
698 /* type 256 */
699 str_content_type = ", RecordHeader";
700 break;
701 case SSL3_RT_INNER_CONTENT_TYPE:
702 /* type 257 */
703 str_content_type = ", InnerContent";
704 break;
705 default:
706 BIO_snprintf(tmpbuf, sizeof(tmpbuf) - 1, ", Unknown (content_type=%d)", content_type);
707 str_content_type = tmpbuf;
708 }
709 } else {
710 BIO_snprintf(tmpbuf, sizeof(tmpbuf) - 1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
711 str_version = tmpbuf;
712 }
713
714 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
715 str_content_type, (unsigned long)len, str_details1,
716 str_details2);
717
718 if (len > 0) {
719 size_t num, i;
720
721 BIO_printf(bio, " ");
722 num = len;
723 for (i = 0; i < num; i++) {
724 if (i % 16 == 0 && i > 0)
725 BIO_printf(bio, "\n ");
726 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
727 }
728 if (i < len)
729 BIO_printf(bio, " ...");
730 BIO_printf(bio, "\n");
731 }
732 (void)BIO_flush(bio);
733 }
734
735 static const STRINT_PAIR tlsext_types[] = {
736 { "server name", TLSEXT_TYPE_server_name },
737 { "max fragment length", TLSEXT_TYPE_max_fragment_length },
738 { "client certificate URL", TLSEXT_TYPE_client_certificate_url },
739 { "trusted CA keys", TLSEXT_TYPE_trusted_ca_keys },
740 { "truncated HMAC", TLSEXT_TYPE_truncated_hmac },
741 { "status request", TLSEXT_TYPE_status_request },
742 { "user mapping", TLSEXT_TYPE_user_mapping },
743 { "client authz", TLSEXT_TYPE_client_authz },
744 { "server authz", TLSEXT_TYPE_server_authz },
745 { "cert type", TLSEXT_TYPE_cert_type },
746 { "supported_groups", TLSEXT_TYPE_supported_groups },
747 { "EC point formats", TLSEXT_TYPE_ec_point_formats },
748 { "SRP", TLSEXT_TYPE_srp },
749 { "signature algorithms", TLSEXT_TYPE_signature_algorithms },
750 { "use SRTP", TLSEXT_TYPE_use_srtp },
751 { "session ticket", TLSEXT_TYPE_session_ticket },
752 { "renegotiation info", TLSEXT_TYPE_renegotiate },
753 { "signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp },
754 { "client cert type", TLSEXT_TYPE_client_cert_type },
755 { "server cert type", TLSEXT_TYPE_server_cert_type },
756 { "TLS padding", TLSEXT_TYPE_padding },
757 #ifdef TLSEXT_TYPE_next_proto_neg
758 { "next protocol", TLSEXT_TYPE_next_proto_neg },
759 #endif
760 #ifdef TLSEXT_TYPE_encrypt_then_mac
761 { "encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac },
762 #endif
763 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
764 { "application layer protocol negotiation",
765 TLSEXT_TYPE_application_layer_protocol_negotiation },
766 #endif
767 #ifdef TLSEXT_TYPE_extended_master_secret
768 { "extended master secret", TLSEXT_TYPE_extended_master_secret },
769 #endif
770 { "compress certificate", TLSEXT_TYPE_compress_certificate },
771 { "key share", TLSEXT_TYPE_key_share },
772 { "supported versions", TLSEXT_TYPE_supported_versions },
773 { "psk", TLSEXT_TYPE_psk },
774 { "psk kex modes", TLSEXT_TYPE_psk_kex_modes },
775 { "certificate authorities", TLSEXT_TYPE_certificate_authorities },
776 { "post handshake auth", TLSEXT_TYPE_post_handshake_auth },
777 { "early_data", TLSEXT_TYPE_early_data },
778 { NULL }
779 };
780
781 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
782 static STRINT_PAIR signature_tls13_scheme_list[] = {
783 { "rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */ },
784 { "ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */ },
785 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
786 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
787 { "rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */ },
788 { "ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */ },
789 { "rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */ },
790 { "ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */ },
791 { "rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */ },
792 { "ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */ },
793 { "rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */ },
794 { "rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */ },
795 { "rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */ },
796 { "ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */ },
797 { "ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */ },
798 { "rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */ },
799 { "rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */ },
800 { "rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */ },
801 { "gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */ },
802 { "gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */ },
803 { "gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */ },
804 { NULL }
805 };
806
807 /* from rfc5246 7.4.1.4.1. */
808 static STRINT_PAIR signature_tls12_alg_list[] = {
809 { "anonymous", TLSEXT_signature_anonymous /* 0 */ },
810 { "RSA", TLSEXT_signature_rsa /* 1 */ },
811 { "DSA", TLSEXT_signature_dsa /* 2 */ },
812 { "ECDSA", TLSEXT_signature_ecdsa /* 3 */ },
813 { NULL }
814 };
815
816 /* from rfc5246 7.4.1.4.1. */
817 static STRINT_PAIR signature_tls12_hash_list[] = {
818 { "none", TLSEXT_hash_none /* 0 */ },
819 { "MD5", TLSEXT_hash_md5 /* 1 */ },
820 { "SHA1", TLSEXT_hash_sha1 /* 2 */ },
821 { "SHA224", TLSEXT_hash_sha224 /* 3 */ },
822 { "SHA256", TLSEXT_hash_sha256 /* 4 */ },
823 { "SHA384", TLSEXT_hash_sha384 /* 5 */ },
824 { "SHA512", TLSEXT_hash_sha512 /* 6 */ },
825 { NULL }
826 };
827
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)828 void tlsext_cb(SSL *s, int client_server, int type,
829 const unsigned char *data, int len, void *arg)
830 {
831 BIO *bio = arg;
832 const char *extname = lookup(type, tlsext_types, "unknown");
833
834 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
835 client_server ? "server" : "client", extname, type, len);
836 BIO_dump(bio, (const char *)data, len);
837 (void)BIO_flush(bio);
838 }
839
840 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)841 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
842 size_t *cookie_len)
843 {
844 unsigned char *buffer = NULL;
845 size_t length = 0;
846 unsigned short port;
847 BIO_ADDR *lpeer = NULL, *peer = NULL;
848 int res = 0;
849
850 /* Initialize a random secret */
851 if (!cookie_initialized) {
852 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
853 BIO_printf(bio_err, "error setting random cookie secret\n");
854 return 0;
855 }
856 cookie_initialized = 1;
857 }
858
859 if (SSL_is_dtls(ssl)) {
860 lpeer = peer = BIO_ADDR_new();
861 if (peer == NULL) {
862 BIO_printf(bio_err, "memory full\n");
863 return 0;
864 }
865
866 /* Read peer information */
867 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
868 } else {
869 peer = ourpeer;
870 }
871
872 /* Create buffer with peer's address and port */
873 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
874 BIO_printf(bio_err, "Failed getting peer address\n");
875 BIO_ADDR_free(lpeer);
876 return 0;
877 }
878 OPENSSL_assert(length != 0);
879 port = BIO_ADDR_rawport(peer);
880 length += sizeof(port);
881 buffer = app_malloc(length, "cookie generate buffer");
882
883 memcpy(buffer, &port, sizeof(port));
884 if (!BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL))
885 goto end;
886
887 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
888 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
889 cookie, DTLS1_COOKIE_LENGTH, cookie_len)
890 == NULL) {
891 BIO_printf(bio_err,
892 "Error calculating HMAC-SHA1 of buffer with secret\n");
893 goto end;
894 }
895 res = 1;
896 end:
897 OPENSSL_free(buffer);
898 BIO_ADDR_free(lpeer);
899
900 return res;
901 }
902
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)903 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
904 size_t cookie_len)
905 {
906 unsigned char result[EVP_MAX_MD_SIZE];
907 size_t resultlength;
908
909 /* Note: we check cookie_initialized because if it's not,
910 * it cannot be valid */
911 if (cookie_initialized
912 && generate_stateless_cookie_callback(ssl, result, &resultlength)
913 && cookie_len == resultlength
914 && memcmp(result, cookie, resultlength) == 0)
915 return 1;
916
917 return 0;
918 }
919
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)920 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
921 unsigned int *cookie_len)
922 {
923 size_t temp = 0;
924 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
925
926 if (res != 0)
927 *cookie_len = (unsigned int)temp;
928 return res;
929 }
930
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)931 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
932 unsigned int cookie_len)
933 {
934 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
935 }
936
937 #endif
938
939 /*
940 * Example of extended certificate handling. Where the standard support of
941 * one certificate per algorithm is not sufficient an application can decide
942 * which certificate(s) to use at runtime based on whatever criteria it deems
943 * appropriate.
944 */
945
946 /* Linked list of certificates, keys and chains */
947 struct ssl_excert_st {
948 int certform;
949 const char *certfile;
950 int keyform;
951 const char *keyfile;
952 const char *chainfile;
953 X509 *cert;
954 EVP_PKEY *key;
955 STACK_OF(X509) *chain;
956 int build_chain;
957 struct ssl_excert_st *next, *prev;
958 };
959
960 static STRINT_PAIR chain_flags[] = {
961 { "Overall Validity", CERT_PKEY_VALID },
962 { "Sign with EE key", CERT_PKEY_SIGN },
963 { "EE signature", CERT_PKEY_EE_SIGNATURE },
964 { "CA signature", CERT_PKEY_CA_SIGNATURE },
965 { "EE key parameters", CERT_PKEY_EE_PARAM },
966 { "CA key parameters", CERT_PKEY_CA_PARAM },
967 { "Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN },
968 { "Issuer Name", CERT_PKEY_ISSUER_NAME },
969 { "Certificate Type", CERT_PKEY_CERT_TYPE },
970 { NULL }
971 };
972
print_chain_flags(SSL * s,int flags)973 static void print_chain_flags(SSL *s, int flags)
974 {
975 STRINT_PAIR *pp;
976
977 for (pp = chain_flags; pp->name; ++pp)
978 BIO_printf(bio_err, "\t%s: %s\n",
979 pp->name,
980 (flags & pp->retval) ? "OK" : "NOT OK");
981 BIO_printf(bio_err, "\tSuite B: ");
982 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
983 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
984 else
985 BIO_printf(bio_err, "not tested\n");
986 }
987
988 /*
989 * Very basic selection callback: just use any certificate chain reported as
990 * valid. More sophisticated could prioritise according to local policy.
991 */
set_cert_cb(SSL * ssl,void * arg)992 static int set_cert_cb(SSL *ssl, void *arg)
993 {
994 int i, rv;
995 SSL_EXCERT *exc = arg;
996 #ifdef CERT_CB_TEST_RETRY
997 static int retry_cnt;
998
999 if (retry_cnt < 5) {
1000 retry_cnt++;
1001 BIO_printf(bio_err,
1002 "Certificate callback retry test: count %d\n",
1003 retry_cnt);
1004 return -1;
1005 }
1006 #endif
1007 SSL_certs_clear(ssl);
1008
1009 if (exc == NULL)
1010 return 1;
1011
1012 /*
1013 * Go to end of list and traverse backwards since we prepend newer
1014 * entries this retains the original order.
1015 */
1016 while (exc->next != NULL)
1017 exc = exc->next;
1018
1019 i = 0;
1020
1021 while (exc != NULL) {
1022 i++;
1023 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1024 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1025 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1026 get_nameopt());
1027 BIO_puts(bio_err, "\n");
1028 print_chain_flags(ssl, rv);
1029 if (rv & CERT_PKEY_VALID) {
1030 if (!SSL_use_certificate(ssl, exc->cert)
1031 || !SSL_use_PrivateKey(ssl, exc->key)) {
1032 return 0;
1033 }
1034 /*
1035 * NB: we wouldn't normally do this as it is not efficient
1036 * building chains on each connection better to cache the chain
1037 * in advance.
1038 */
1039 if (exc->build_chain) {
1040 if (!SSL_build_cert_chain(ssl, 0))
1041 return 0;
1042 } else if (exc->chain != NULL) {
1043 if (!SSL_set1_chain(ssl, exc->chain))
1044 return 0;
1045 }
1046 }
1047 exc = exc->prev;
1048 }
1049 return 1;
1050 }
1051
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)1052 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1053 {
1054 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1055 }
1056
ssl_excert_prepend(SSL_EXCERT ** pexc)1057 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1058 {
1059 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
1060
1061 memset(exc, 0, sizeof(*exc));
1062
1063 exc->next = *pexc;
1064 *pexc = exc;
1065
1066 if (exc->next) {
1067 exc->certform = exc->next->certform;
1068 exc->keyform = exc->next->keyform;
1069 exc->next->prev = exc;
1070 } else {
1071 exc->certform = FORMAT_PEM;
1072 exc->keyform = FORMAT_PEM;
1073 }
1074 return 1;
1075 }
1076
ssl_excert_free(SSL_EXCERT * exc)1077 void ssl_excert_free(SSL_EXCERT *exc)
1078 {
1079 SSL_EXCERT *curr;
1080
1081 if (exc == NULL)
1082 return;
1083 while (exc) {
1084 X509_free(exc->cert);
1085 EVP_PKEY_free(exc->key);
1086 OSSL_STACK_OF_X509_free(exc->chain);
1087 curr = exc;
1088 exc = exc->next;
1089 OPENSSL_free(curr);
1090 }
1091 }
1092
load_excert(SSL_EXCERT ** pexc)1093 int load_excert(SSL_EXCERT **pexc)
1094 {
1095 SSL_EXCERT *exc = *pexc;
1096
1097 if (exc == NULL)
1098 return 1;
1099 /* If nothing in list, free and set to NULL */
1100 if (exc->certfile == NULL && exc->next == NULL) {
1101 ssl_excert_free(exc);
1102 *pexc = NULL;
1103 return 1;
1104 }
1105 for (; exc; exc = exc->next) {
1106 if (exc->certfile == NULL) {
1107 BIO_printf(bio_err, "Missing filename\n");
1108 return 0;
1109 }
1110 exc->cert = load_cert(exc->certfile, exc->certform,
1111 "Server Certificate");
1112 if (exc->cert == NULL)
1113 return 0;
1114 if (exc->keyfile != NULL) {
1115 exc->key = load_key(exc->keyfile, exc->keyform,
1116 0, NULL, NULL, "server key");
1117 } else {
1118 exc->key = load_key(exc->certfile, exc->certform,
1119 0, NULL, NULL, "server key");
1120 }
1121 if (exc->key == NULL)
1122 return 0;
1123 if (exc->chainfile != NULL) {
1124 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1125 return 0;
1126 }
1127 }
1128 return 1;
1129 }
1130
1131 enum range { OPT_X_ENUM };
1132
args_excert(int opt,SSL_EXCERT ** pexc)1133 int args_excert(int opt, SSL_EXCERT **pexc)
1134 {
1135 SSL_EXCERT *exc = *pexc;
1136
1137 assert(opt > OPT_X__FIRST);
1138 assert(opt < OPT_X__LAST);
1139
1140 if (exc == NULL) {
1141 if (!ssl_excert_prepend(&exc)) {
1142 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1143 opt_getprog());
1144 goto err;
1145 }
1146 *pexc = exc;
1147 }
1148
1149 switch ((enum range)opt) {
1150 case OPT_X__FIRST:
1151 case OPT_X__LAST:
1152 return 0;
1153 case OPT_X_CERT:
1154 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1155 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1156 goto err;
1157 }
1158 *pexc = exc;
1159 exc->certfile = opt_arg();
1160 break;
1161 case OPT_X_KEY:
1162 if (exc->keyfile != NULL) {
1163 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1164 goto err;
1165 }
1166 exc->keyfile = opt_arg();
1167 break;
1168 case OPT_X_CHAIN:
1169 if (exc->chainfile != NULL) {
1170 BIO_printf(bio_err, "%s: Chain already specified\n",
1171 opt_getprog());
1172 goto err;
1173 }
1174 exc->chainfile = opt_arg();
1175 break;
1176 case OPT_X_CHAIN_BUILD:
1177 exc->build_chain = 1;
1178 break;
1179 case OPT_X_CERTFORM:
1180 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1181 return 0;
1182 break;
1183 case OPT_X_KEYFORM:
1184 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1185 return 0;
1186 break;
1187 }
1188 return 1;
1189
1190 err:
1191 ERR_print_errors(bio_err);
1192 ssl_excert_free(exc);
1193 *pexc = NULL;
1194 return 0;
1195 }
1196
print_raw_cipherlist(SSL * s)1197 static void print_raw_cipherlist(SSL *s)
1198 {
1199 const unsigned char *rlist;
1200 static const unsigned char scsv_id[] = { 0, 0xFF };
1201 size_t i, rlistlen, num;
1202
1203 if (!SSL_is_server(s))
1204 return;
1205 num = SSL_get0_raw_cipherlist(s, NULL);
1206 OPENSSL_assert(num == 2);
1207 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1208 BIO_puts(bio_err, "Client cipher list: ");
1209 for (i = 0; i < rlistlen; i += num, rlist += num) {
1210 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1211 if (i)
1212 BIO_puts(bio_err, ":");
1213 if (c != NULL) {
1214 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1215 } else if (memcmp(rlist, scsv_id, num) == 0) {
1216 BIO_puts(bio_err, "SCSV");
1217 } else {
1218 size_t j;
1219 BIO_puts(bio_err, "0x");
1220 for (j = 0; j < num; j++)
1221 BIO_printf(bio_err, "%02X", rlist[j]);
1222 }
1223 }
1224 BIO_puts(bio_err, "\n");
1225 }
1226
1227 /*
1228 * Hex encoder for TLSA RRdata, not ':' delimited.
1229 */
hexencode(const unsigned char * data,size_t len)1230 static char *hexencode(const unsigned char *data, size_t len)
1231 {
1232 static const char *hex = "0123456789abcdef";
1233 char *out;
1234 char *cp;
1235 size_t outlen = 2 * len + 1;
1236 int ilen = (int)outlen;
1237
1238 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1239 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1240 opt_getprog(), len);
1241 exit(1);
1242 }
1243 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1244
1245 while (len-- > 0) {
1246 *cp++ = hex[(*data >> 4) & 0x0f];
1247 *cp++ = hex[*data++ & 0x0f];
1248 }
1249 *cp = '\0';
1250 return out;
1251 }
1252
print_verify_detail(SSL * s,BIO * bio)1253 void print_verify_detail(SSL *s, BIO *bio)
1254 {
1255 int mdpth;
1256 EVP_PKEY *mspki = NULL;
1257 long verify_err = SSL_get_verify_result(s);
1258
1259 if (verify_err == X509_V_OK) {
1260 const char *peername = SSL_get0_peername(s);
1261
1262 BIO_printf(bio, "Verification: OK\n");
1263 if (peername != NULL)
1264 BIO_printf(bio, "Verified peername: %s\n", peername);
1265 } else {
1266 const char *reason = X509_verify_cert_error_string(verify_err);
1267
1268 BIO_printf(bio, "Verification error: %s\n", reason);
1269 }
1270
1271 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1272 uint8_t usage, selector, mtype;
1273 const unsigned char *data = NULL;
1274 size_t dlen = 0;
1275 char *hexdata;
1276
1277 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1278
1279 /*
1280 * The TLSA data field can be quite long when it is a certificate,
1281 * public key or even a SHA2-512 digest. Because the initial octets of
1282 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1283 * and lengths, we show the last 12 bytes of the data instead, as these
1284 * are more likely to distinguish distinct TLSA records.
1285 */
1286 #define TLSA_TAIL_SIZE 12
1287 if (dlen > TLSA_TAIL_SIZE)
1288 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1289 else
1290 hexdata = hexencode(data, dlen);
1291 BIO_printf(bio, "DANE TLSA %d %d %d %s%s ",
1292 usage, selector, mtype,
1293 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata);
1294 if (SSL_get0_peer_rpk(s) == NULL)
1295 BIO_printf(bio, "%s certificate at depth %d\n",
1296 (mspki != NULL) ? "signed the peer" : mdpth ? "matched the TA"
1297 : "matched the EE",
1298 mdpth);
1299 else
1300 BIO_printf(bio, "matched the peer raw public key\n");
1301 OPENSSL_free(hexdata);
1302 }
1303 }
1304
print_ssl_summary(SSL * s)1305 void print_ssl_summary(SSL *s)
1306 {
1307 const char *sigalg;
1308 const SSL_CIPHER *c;
1309 X509 *peer = SSL_get0_peer_certificate(s);
1310 EVP_PKEY *peer_rpk = SSL_get0_peer_rpk(s);
1311 int nid;
1312
1313 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1314 print_raw_cipherlist(s);
1315 c = SSL_get_current_cipher(s);
1316 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1317 do_print_sigalgs(bio_err, s, 0);
1318 if (peer != NULL) {
1319 BIO_puts(bio_err, "Peer certificate: ");
1320 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1321 0, get_nameopt());
1322 BIO_puts(bio_err, "\n");
1323 if (SSL_get_peer_signature_nid(s, &nid))
1324 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1325 if (SSL_get0_peer_signature_name(s, &sigalg))
1326 BIO_printf(bio_err, "Signature type: %s\n", sigalg);
1327 print_verify_detail(s, bio_err);
1328 } else if (peer_rpk != NULL) {
1329 BIO_printf(bio_err, "Peer used raw public key\n");
1330 if (SSL_get0_peer_signature_name(s, &sigalg))
1331 BIO_printf(bio_err, "Signature type: %s\n", sigalg);
1332 print_verify_detail(s, bio_err);
1333 } else {
1334 BIO_puts(bio_err, "No peer certificate or raw public key\n");
1335 }
1336 #ifndef OPENSSL_NO_EC
1337 ssl_print_point_formats(bio_err, s);
1338 if (SSL_is_server(s))
1339 ssl_print_groups(bio_err, s, 1);
1340 #endif
1341 ssl_print_tmp_key(bio_err, s);
1342 }
1343
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1344 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1345 SSL_CTX *ctx)
1346 {
1347 int i;
1348
1349 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1350 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1351 const char *flag = sk_OPENSSL_STRING_value(str, i);
1352 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1353
1354 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1355 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1356 flag, arg == NULL ? "<NULL>" : arg);
1357 ERR_print_errors(bio_err);
1358 return 0;
1359 }
1360 }
1361 if (!SSL_CONF_CTX_finish(cctx)) {
1362 BIO_puts(bio_err, "Error finishing context\n");
1363 ERR_print_errors(bio_err);
1364 return 0;
1365 }
1366 return 1;
1367 }
1368
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1369 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1370 {
1371 X509_CRL *crl;
1372 int i, ret = 1;
1373
1374 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1375 crl = sk_X509_CRL_value(crls, i);
1376 if (!X509_STORE_add_crl(st, crl))
1377 ret = 0;
1378 }
1379 return ret;
1380 }
1381
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1382 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1383 {
1384 X509_STORE *st;
1385
1386 st = SSL_CTX_get_cert_store(ctx);
1387 add_crls_store(st, crls);
1388 if (crl_download)
1389 store_setup_crl_download(st);
1390 return 1;
1391 }
1392
ssl_load_stores(SSL_CTX * ctx,const char * vfyCApath,const char * vfyCAfile,const char * vfyCAstore,const char * chCApath,const char * chCAfile,const char * chCAstore,STACK_OF (X509_CRL)* crls,int crl_download)1393 int ssl_load_stores(SSL_CTX *ctx,
1394 const char *vfyCApath, const char *vfyCAfile,
1395 const char *vfyCAstore,
1396 const char *chCApath, const char *chCAfile,
1397 const char *chCAstore,
1398 STACK_OF(X509_CRL) *crls, int crl_download)
1399 {
1400 X509_STORE *vfy = NULL, *ch = NULL;
1401 int rv = 0;
1402
1403 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1404 vfy = X509_STORE_new();
1405 if (vfy == NULL)
1406 goto err;
1407 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1408 goto err;
1409 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1410 goto err;
1411 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1412 goto err;
1413 add_crls_store(vfy, crls);
1414 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1415 goto err;
1416 if (crl_download)
1417 store_setup_crl_download(vfy);
1418 }
1419 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1420 ch = X509_STORE_new();
1421 if (ch == NULL)
1422 goto err;
1423 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1424 goto err;
1425 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1426 goto err;
1427 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1428 goto err;
1429 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1430 goto err;
1431 }
1432 rv = 1;
1433 err:
1434 X509_STORE_free(vfy);
1435 X509_STORE_free(ch);
1436 return rv;
1437 }
1438
1439 /* Verbose print out of security callback */
1440
1441 typedef struct {
1442 BIO *out;
1443 int verbose;
1444 int (*old_cb)(const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1445 void *other, void *ex);
1446 } security_debug_ex;
1447
1448 static STRINT_PAIR callback_types[] = {
1449 { "Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED },
1450 { "Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED },
1451 { "Check Ciphersuite", SSL_SECOP_CIPHER_CHECK },
1452 #ifndef OPENSSL_NO_DH
1453 { "Temp DH key bits", SSL_SECOP_TMP_DH },
1454 #endif
1455 { "Supported Curve", SSL_SECOP_CURVE_SUPPORTED },
1456 { "Shared Curve", SSL_SECOP_CURVE_SHARED },
1457 { "Check Curve", SSL_SECOP_CURVE_CHECK },
1458 { "Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED },
1459 { "Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED },
1460 { "Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK },
1461 { "Signature Algorithm mask", SSL_SECOP_SIGALG_MASK },
1462 { "Certificate chain EE key", SSL_SECOP_EE_KEY },
1463 { "Certificate chain CA key", SSL_SECOP_CA_KEY },
1464 { "Peer Chain EE key", SSL_SECOP_PEER_EE_KEY },
1465 { "Peer Chain CA key", SSL_SECOP_PEER_CA_KEY },
1466 { "Certificate chain CA digest", SSL_SECOP_CA_MD },
1467 { "Peer chain CA digest", SSL_SECOP_PEER_CA_MD },
1468 { "SSL compression", SSL_SECOP_COMPRESSION },
1469 { "Session ticket", SSL_SECOP_TICKET },
1470 { NULL }
1471 };
1472
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1473 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1474 int op, int bits, int nid,
1475 void *other, void *ex)
1476 {
1477 security_debug_ex *sdb = ex;
1478 int rv, show_bits = 1, cert_md = 0;
1479 const char *nm;
1480 int show_nm;
1481
1482 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1483 if (rv == 1 && sdb->verbose < 2)
1484 return 1;
1485 BIO_puts(sdb->out, "Security callback: ");
1486
1487 nm = lookup(op, callback_types, NULL);
1488 show_nm = nm != NULL;
1489 switch (op) {
1490 case SSL_SECOP_TICKET:
1491 case SSL_SECOP_COMPRESSION:
1492 show_bits = 0;
1493 show_nm = 0;
1494 break;
1495 case SSL_SECOP_VERSION:
1496 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1497 show_bits = 0;
1498 show_nm = 0;
1499 break;
1500 case SSL_SECOP_CA_MD:
1501 case SSL_SECOP_PEER_CA_MD:
1502 cert_md = 1;
1503 break;
1504 case SSL_SECOP_SIGALG_SUPPORTED:
1505 case SSL_SECOP_SIGALG_SHARED:
1506 case SSL_SECOP_SIGALG_CHECK:
1507 case SSL_SECOP_SIGALG_MASK:
1508 show_nm = 0;
1509 break;
1510 }
1511 if (show_nm)
1512 BIO_printf(sdb->out, "%s=", nm);
1513
1514 switch (op & SSL_SECOP_OTHER_TYPE) {
1515
1516 case SSL_SECOP_OTHER_CIPHER:
1517 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1518 break;
1519
1520 #ifndef OPENSSL_NO_EC
1521 case SSL_SECOP_OTHER_CURVE: {
1522 const char *cname;
1523 cname = EC_curve_nid2nist(nid);
1524 if (cname == NULL)
1525 cname = OBJ_nid2sn(nid);
1526 BIO_puts(sdb->out, cname);
1527 } break;
1528 #endif
1529 case SSL_SECOP_OTHER_CERT: {
1530 if (cert_md) {
1531 int sig_nid = X509_get_signature_nid(other);
1532
1533 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1534 } else {
1535 EVP_PKEY *pkey = X509_get0_pubkey(other);
1536
1537 if (pkey == NULL) {
1538 BIO_printf(sdb->out, "Public key missing");
1539 } else {
1540 const char *algname = "";
1541
1542 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1543 &algname, EVP_PKEY_get0_asn1(pkey));
1544 BIO_printf(sdb->out, "%s, bits=%d",
1545 algname, EVP_PKEY_get_bits(pkey));
1546 }
1547 }
1548 break;
1549 }
1550 case SSL_SECOP_OTHER_SIGALG: {
1551 const unsigned char *salg = other;
1552 const char *sname = NULL;
1553 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1554 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1555
1556 if (nm != NULL)
1557 BIO_printf(sdb->out, "%s", nm);
1558 else
1559 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1560
1561 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1562 if (sname != NULL) {
1563 BIO_printf(sdb->out, " scheme=%s", sname);
1564 } else {
1565 int alg_code = salg[1];
1566 int hash_code = salg[0];
1567 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1568 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1569
1570 if (alg_str != NULL && hash_str != NULL)
1571 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1572 else
1573 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1574 }
1575 }
1576 }
1577
1578 if (show_bits)
1579 BIO_printf(sdb->out, ", security bits=%d", bits);
1580 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1581 return rv;
1582 }
1583
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1584 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1585 {
1586 static security_debug_ex sdb;
1587
1588 sdb.out = bio_err;
1589 sdb.verbose = verbose;
1590 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1591 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1592 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1593 }
1594
keylog_callback(const SSL * ssl,const char * line)1595 static void keylog_callback(const SSL *ssl, const char *line)
1596 {
1597 if (bio_keylog == NULL) {
1598 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1599 return;
1600 }
1601
1602 /*
1603 * There might be concurrent writers to the keylog file, so we must ensure
1604 * that the given line is written at once.
1605 */
1606 BIO_printf(bio_keylog, "%s\n", line);
1607 (void)BIO_flush(bio_keylog);
1608 }
1609
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1610 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1611 {
1612 /* Close any open files */
1613 BIO_free_all(bio_keylog);
1614 bio_keylog = NULL;
1615
1616 if (ctx == NULL || keylog_file == NULL) {
1617 /* Keylogging is disabled, OK. */
1618 return 0;
1619 }
1620
1621 /*
1622 * Append rather than write in order to allow concurrent modification.
1623 * Furthermore, this preserves existing keylog files which is useful when
1624 * the tool is run multiple times.
1625 */
1626 bio_keylog = BIO_new_file(keylog_file, "a");
1627 if (bio_keylog == NULL) {
1628 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1629 return 1;
1630 }
1631
1632 /* Write a header for seekable, empty files (this excludes pipes). */
1633 if (BIO_tell(bio_keylog) == 0) {
1634 BIO_puts(bio_keylog,
1635 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1636 (void)BIO_flush(bio_keylog);
1637 }
1638 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1639 return 0;
1640 }
1641
print_ca_names(BIO * bio,SSL * s)1642 void print_ca_names(BIO *bio, SSL *s)
1643 {
1644 const char *cs = SSL_is_server(s) ? "server" : "client";
1645 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1646 int i;
1647
1648 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1649 if (!SSL_is_server(s))
1650 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1651 return;
1652 }
1653
1654 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n", cs);
1655 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1656 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1657 BIO_write(bio, "\n", 1);
1658 }
1659 }
1660
ssl_print_secure_renegotiation_notes(BIO * bio,SSL * s)1661 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s)
1662 {
1663 if (SSL_VERSION_ALLOWS_RENEGOTIATION(s)) {
1664 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1665 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1666 } else {
1667 BIO_printf(bio, "This TLS version forbids renegotiation.\n");
1668 }
1669 }
1670
progress_cb(EVP_PKEY_CTX * ctx)1671 int progress_cb(EVP_PKEY_CTX *ctx)
1672 {
1673 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1674 int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1675 static const char symbols[] = ".+*\n";
1676 char c = (p >= 0 && (size_t)p <= sizeof(symbols) - 1) ? symbols[p] : '?';
1677
1678 BIO_write(b, &c, 1);
1679 (void)BIO_flush(b);
1680 return 1;
1681 }
1682