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) <= 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
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)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
ssl_print_client_cert_types(BIO * bio,SSL * s)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
get_sigtype(int nid)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
do_print_sigalgs(BIO * out,SSL * s,int shared)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 switch (rsign | rhash << 8) {
296 case 0x0809:
297 BIO_puts(out, "rsa_pss_pss_sha256");
298 continue;
299 case 0x080a:
300 BIO_puts(out, "rsa_pss_pss_sha384");
301 continue;
302 case 0x080b:
303 BIO_puts(out, "rsa_pss_pss_sha512");
304 continue;
305 case 0x081a:
306 BIO_puts(out, "ecdsa_brainpoolP256r1_sha256");
307 continue;
308 case 0x081b:
309 BIO_puts(out, "ecdsa_brainpoolP384r1_sha384");
310 continue;
311 case 0x081c:
312 BIO_puts(out, "ecdsa_brainpoolP512r1_sha512");
313 continue;
314 }
315 sstr = get_sigtype(sign_nid);
316 if (sstr)
317 BIO_printf(out, "%s", sstr);
318 else
319 BIO_printf(out, "0x%02X", (int)rsign);
320 if (hash_nid != NID_undef)
321 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
322 else if (sstr == NULL)
323 BIO_printf(out, "+0x%02X", (int)rhash);
324 }
325 BIO_puts(out, "\n");
326 return 1;
327 }
328
ssl_print_sigalgs(BIO * out,SSL * s)329 int ssl_print_sigalgs(BIO *out, SSL *s)
330 {
331 const char *name;
332 int nid;
333
334 if (!SSL_is_server(s))
335 ssl_print_client_cert_types(out, s);
336 do_print_sigalgs(out, s, 0);
337 do_print_sigalgs(out, s, 1);
338 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
339 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
340 if (SSL_get0_peer_signature_name(s, &name))
341 BIO_printf(out, "Peer signature type: %s\n", name);
342 else if (SSL_get_peer_signature_type_nid(s, &nid))
343 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
344 return 1;
345 }
346
347 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)348 int ssl_print_point_formats(BIO *out, SSL *s)
349 {
350 int i, nformats;
351 const char *pformats;
352
353 nformats = SSL_get0_ec_point_formats(s, &pformats);
354 if (nformats <= 0)
355 return 1;
356 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
357 for (i = 0; i < nformats; i++, pformats++) {
358 if (i)
359 BIO_puts(out, ":");
360 switch (*pformats) {
361 case TLSEXT_ECPOINTFORMAT_uncompressed:
362 BIO_puts(out, "uncompressed");
363 break;
364
365 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
366 BIO_puts(out, "ansiX962_compressed_prime");
367 break;
368
369 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
370 BIO_puts(out, "ansiX962_compressed_char2");
371 break;
372
373 default:
374 BIO_printf(out, "unknown(%d)", (int)*pformats);
375 break;
376
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 {
450 char name[80];
451 size_t name_len;
452
453 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
454 name, sizeof(name), &name_len))
455 strcpy(name, "?");
456 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
457 }
458 break;
459 #endif
460 default:
461 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
462 EVP_PKEY_get_bits(key));
463 }
464 EVP_PKEY_free(key);
465 return 1;
466 }
467
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)468 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
469 int argi, long argl, int ret, size_t *processed)
470 {
471 BIO *out;
472 BIO_MMSG_CB_ARGS *mmsgargs;
473 size_t i;
474
475 out = (BIO *)BIO_get_callback_arg(bio);
476 if (out == NULL)
477 return ret;
478
479 switch (cmd) {
480 case (BIO_CB_READ | BIO_CB_RETURN):
481 if (ret > 0 && processed != NULL) {
482 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
483 (void *)bio, (void *)argp, len, *processed, *processed);
484 BIO_dump(out, argp, (int)*processed);
485 } else {
486 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
487 (void *)bio, (void *)argp, len, ret);
488 }
489 break;
490
491 case (BIO_CB_WRITE | BIO_CB_RETURN):
492 if (ret > 0 && processed != NULL) {
493 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
494 (void *)bio, (void *)argp, len, *processed, *processed);
495 BIO_dump(out, argp, (int)*processed);
496 } else {
497 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
498 (void *)bio, (void *)argp, len, ret);
499 }
500 break;
501
502 case (BIO_CB_RECVMMSG | BIO_CB_RETURN):
503 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
504 if (ret > 0) {
505 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
506 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
507 + (i * mmsgargs->stride));
508
509 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
510 (void *)bio, (void *)msg->data, msg->data_len,
511 msg->data_len, msg->data_len);
512 BIO_dump(out, msg->data, msg->data_len);
513 }
514 } else if (mmsgargs->num_msg > 0) {
515 BIO_MSG *msg = mmsgargs->msg;
516
517 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
518 (void *)bio, (void *)msg->data, msg->data_len, ret);
519 }
520 break;
521
522 case (BIO_CB_SENDMMSG | BIO_CB_RETURN):
523 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
524 if (ret > 0) {
525 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
526 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
527 + (i * mmsgargs->stride));
528
529 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
530 (void *)bio, (void *)msg->data, msg->data_len,
531 msg->data_len, msg->data_len);
532 BIO_dump(out, msg->data, msg->data_len);
533 }
534 } else if (mmsgargs->num_msg > 0) {
535 BIO_MSG *msg = mmsgargs->msg;
536
537 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
538 (void *)bio, (void *)msg->data, msg->data_len, ret);
539 }
540 break;
541
542 default:
543 /* do nothing */
544 break;
545 }
546 return ret;
547 }
548
apps_ssl_info_callback(const SSL * s,int where,int ret)549 void apps_ssl_info_callback(const SSL *s, int where, int ret)
550 {
551 const char *str;
552 int w;
553
554 w = where & ~SSL_ST_MASK;
555
556 if (w & SSL_ST_CONNECT)
557 str = "SSL_connect";
558 else if (w & SSL_ST_ACCEPT)
559 str = "SSL_accept";
560 else
561 str = "undefined";
562
563 if (where & SSL_CB_LOOP) {
564 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
565 } else if (where & SSL_CB_ALERT) {
566 str = (where & SSL_CB_READ) ? "read" : "write";
567 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
568 str,
569 SSL_alert_type_string_long(ret),
570 SSL_alert_desc_string_long(ret));
571 } else if (where & SSL_CB_EXIT) {
572 if (ret == 0)
573 BIO_printf(bio_err, "%s:failed in %s\n",
574 str, SSL_state_string_long(s));
575 else if (ret < 0)
576 BIO_printf(bio_err, "%s:error in %s\n",
577 str, SSL_state_string_long(s));
578 }
579 }
580
581 static STRINT_PAIR ssl_versions[] = {
582 {"SSL 3.0", SSL3_VERSION},
583 {"TLS 1.0", TLS1_VERSION},
584 {"TLS 1.1", TLS1_1_VERSION},
585 {"TLS 1.2", TLS1_2_VERSION},
586 {"TLS 1.3", TLS1_3_VERSION},
587 {"DTLS 1.0", DTLS1_VERSION},
588 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
589 {NULL}
590 };
591
592 static STRINT_PAIR alert_types[] = {
593 {" close_notify", 0},
594 {" end_of_early_data", 1},
595 {" unexpected_message", 10},
596 {" bad_record_mac", 20},
597 {" decryption_failed", 21},
598 {" record_overflow", 22},
599 {" decompression_failure", 30},
600 {" handshake_failure", 40},
601 {" bad_certificate", 42},
602 {" unsupported_certificate", 43},
603 {" certificate_revoked", 44},
604 {" certificate_expired", 45},
605 {" certificate_unknown", 46},
606 {" illegal_parameter", 47},
607 {" unknown_ca", 48},
608 {" access_denied", 49},
609 {" decode_error", 50},
610 {" decrypt_error", 51},
611 {" export_restriction", 60},
612 {" protocol_version", 70},
613 {" insufficient_security", 71},
614 {" internal_error", 80},
615 {" inappropriate_fallback", 86},
616 {" user_canceled", 90},
617 {" no_renegotiation", 100},
618 {" missing_extension", 109},
619 {" unsupported_extension", 110},
620 {" certificate_unobtainable", 111},
621 {" unrecognized_name", 112},
622 {" bad_certificate_status_response", 113},
623 {" bad_certificate_hash_value", 114},
624 {" unknown_psk_identity", 115},
625 {" certificate_required", 116},
626 {NULL}
627 };
628
629 static STRINT_PAIR handshakes[] = {
630 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
631 {", ClientHello", SSL3_MT_CLIENT_HELLO},
632 {", ServerHello", SSL3_MT_SERVER_HELLO},
633 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
634 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
635 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
636 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
637 {", Certificate", SSL3_MT_CERTIFICATE},
638 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
639 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
640 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
641 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
642 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
643 {", Finished", SSL3_MT_FINISHED},
644 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
645 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
646 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
647 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
648 {", CompressedCertificate", SSL3_MT_COMPRESSED_CERTIFICATE},
649 #ifndef OPENSSL_NO_NEXTPROTONEG
650 {", NextProto", SSL3_MT_NEXT_PROTO},
651 #endif
652 {", MessageHash", SSL3_MT_MESSAGE_HASH},
653 {NULL}
654 };
655
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)656 void msg_cb(int write_p, int version, int content_type, const void *buf,
657 size_t len, SSL *ssl, void *arg)
658 {
659 BIO *bio = arg;
660 const char *str_write_p = write_p ? ">>>" : "<<<";
661 char tmpbuf[128];
662 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
663 const unsigned char* bp = buf;
664
665 if (version == SSL3_VERSION ||
666 version == TLS1_VERSION ||
667 version == TLS1_1_VERSION ||
668 version == TLS1_2_VERSION ||
669 version == TLS1_3_VERSION ||
670 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
671 str_version = lookup(version, ssl_versions, "???");
672 switch (content_type) {
673 case SSL3_RT_CHANGE_CIPHER_SPEC:
674 /* type 20 */
675 str_content_type = ", ChangeCipherSpec";
676 break;
677 case SSL3_RT_ALERT:
678 /* type 21 */
679 str_content_type = ", Alert";
680 str_details1 = ", ???";
681 if (len == 2) {
682 switch (bp[0]) {
683 case 1:
684 str_details1 = ", warning";
685 break;
686 case 2:
687 str_details1 = ", fatal";
688 break;
689 }
690 str_details2 = lookup((int)bp[1], alert_types, " ???");
691 }
692 break;
693 case SSL3_RT_HANDSHAKE:
694 /* type 22 */
695 str_content_type = ", Handshake";
696 str_details1 = "???";
697 if (len > 0)
698 str_details1 = lookup((int)bp[0], handshakes, "???");
699 break;
700 case SSL3_RT_APPLICATION_DATA:
701 /* type 23 */
702 str_content_type = ", ApplicationData";
703 break;
704 case SSL3_RT_HEADER:
705 /* type 256 */
706 str_content_type = ", RecordHeader";
707 break;
708 case SSL3_RT_INNER_CONTENT_TYPE:
709 /* type 257 */
710 str_content_type = ", InnerContent";
711 break;
712 default:
713 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
714 str_content_type = tmpbuf;
715 }
716 } else {
717 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
718 str_version = tmpbuf;
719 }
720
721 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
722 str_content_type, (unsigned long)len, str_details1,
723 str_details2);
724
725 if (len > 0) {
726 size_t num, i;
727
728 BIO_printf(bio, " ");
729 num = len;
730 for (i = 0; i < num; i++) {
731 if (i % 16 == 0 && i > 0)
732 BIO_printf(bio, "\n ");
733 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
734 }
735 if (i < len)
736 BIO_printf(bio, " ...");
737 BIO_printf(bio, "\n");
738 }
739 (void)BIO_flush(bio);
740 }
741
742 static const STRINT_PAIR tlsext_types[] = {
743 {"server name", TLSEXT_TYPE_server_name},
744 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
745 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
746 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
747 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
748 {"status request", TLSEXT_TYPE_status_request},
749 {"user mapping", TLSEXT_TYPE_user_mapping},
750 {"client authz", TLSEXT_TYPE_client_authz},
751 {"server authz", TLSEXT_TYPE_server_authz},
752 {"cert type", TLSEXT_TYPE_cert_type},
753 {"supported_groups", TLSEXT_TYPE_supported_groups},
754 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
755 {"SRP", TLSEXT_TYPE_srp},
756 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
757 {"use SRTP", TLSEXT_TYPE_use_srtp},
758 {"session ticket", TLSEXT_TYPE_session_ticket},
759 {"renegotiation info", TLSEXT_TYPE_renegotiate},
760 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
761 {"client cert type", TLSEXT_TYPE_client_cert_type},
762 {"server cert type", TLSEXT_TYPE_server_cert_type},
763 {"TLS padding", TLSEXT_TYPE_padding},
764 #ifdef TLSEXT_TYPE_next_proto_neg
765 {"next protocol", TLSEXT_TYPE_next_proto_neg},
766 #endif
767 #ifdef TLSEXT_TYPE_encrypt_then_mac
768 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
769 #endif
770 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
771 {"application layer protocol negotiation",
772 TLSEXT_TYPE_application_layer_protocol_negotiation},
773 #endif
774 #ifdef TLSEXT_TYPE_extended_master_secret
775 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
776 #endif
777 {"compress certificate", TLSEXT_TYPE_compress_certificate},
778 {"key share", TLSEXT_TYPE_key_share},
779 {"supported versions", TLSEXT_TYPE_supported_versions},
780 {"psk", TLSEXT_TYPE_psk},
781 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
782 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
783 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
784 {"early_data", TLSEXT_TYPE_early_data},
785 {NULL}
786 };
787
788 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
789 static STRINT_PAIR signature_tls13_scheme_list[] = {
790 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
791 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
792 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
793 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
794 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
795 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
796 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
797 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
798 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
799 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
800 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
801 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
802 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
803 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
804 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
805 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
806 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
807 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
808 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
809 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
810 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
811 {NULL}
812 };
813
814 /* from rfc5246 7.4.1.4.1. */
815 static STRINT_PAIR signature_tls12_alg_list[] = {
816 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
817 {"RSA", TLSEXT_signature_rsa /* 1 */},
818 {"DSA", TLSEXT_signature_dsa /* 2 */},
819 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
820 {NULL}
821 };
822
823 /* from rfc5246 7.4.1.4.1. */
824 static STRINT_PAIR signature_tls12_hash_list[] = {
825 {"none", TLSEXT_hash_none /* 0 */},
826 {"MD5", TLSEXT_hash_md5 /* 1 */},
827 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
828 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
829 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
830 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
831 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
832 {NULL}
833 };
834
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)835 void tlsext_cb(SSL *s, int client_server, int type,
836 const unsigned char *data, int len, void *arg)
837 {
838 BIO *bio = arg;
839 const char *extname = lookup(type, tlsext_types, "unknown");
840
841 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
842 client_server ? "server" : "client", extname, type, len);
843 BIO_dump(bio, (const char *)data, len);
844 (void)BIO_flush(bio);
845 }
846
847 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)848 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
849 size_t *cookie_len)
850 {
851 unsigned char *buffer = NULL;
852 size_t length = 0;
853 unsigned short port;
854 BIO_ADDR *lpeer = NULL, *peer = NULL;
855 int res = 0;
856
857 /* Initialize a random secret */
858 if (!cookie_initialized) {
859 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
860 BIO_printf(bio_err, "error setting random cookie secret\n");
861 return 0;
862 }
863 cookie_initialized = 1;
864 }
865
866 if (SSL_is_dtls(ssl)) {
867 lpeer = peer = BIO_ADDR_new();
868 if (peer == NULL) {
869 BIO_printf(bio_err, "memory full\n");
870 return 0;
871 }
872
873 /* Read peer information */
874 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
875 } else {
876 peer = ourpeer;
877 }
878
879 /* Create buffer with peer's address and port */
880 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
881 BIO_printf(bio_err, "Failed getting peer address\n");
882 BIO_ADDR_free(lpeer);
883 return 0;
884 }
885 OPENSSL_assert(length != 0);
886 port = BIO_ADDR_rawport(peer);
887 length += sizeof(port);
888 buffer = app_malloc(length, "cookie generate buffer");
889
890 memcpy(buffer, &port, sizeof(port));
891 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
892
893 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
894 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
895 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
896 BIO_printf(bio_err,
897 "Error calculating HMAC-SHA1 of buffer with secret\n");
898 goto end;
899 }
900 res = 1;
901 end:
902 OPENSSL_free(buffer);
903 BIO_ADDR_free(lpeer);
904
905 return res;
906 }
907
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)908 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
909 size_t cookie_len)
910 {
911 unsigned char result[EVP_MAX_MD_SIZE];
912 size_t resultlength;
913
914 /* Note: we check cookie_initialized because if it's not,
915 * it cannot be valid */
916 if (cookie_initialized
917 && generate_stateless_cookie_callback(ssl, result, &resultlength)
918 && cookie_len == resultlength
919 && memcmp(result, cookie, resultlength) == 0)
920 return 1;
921
922 return 0;
923 }
924
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)925 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
926 unsigned int *cookie_len)
927 {
928 size_t temp = 0;
929 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
930
931 if (res != 0)
932 *cookie_len = (unsigned int)temp;
933 return res;
934 }
935
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)936 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
937 unsigned int cookie_len)
938 {
939 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
940 }
941
942 #endif
943
944 /*
945 * Example of extended certificate handling. Where the standard support of
946 * one certificate per algorithm is not sufficient an application can decide
947 * which certificate(s) to use at runtime based on whatever criteria it deems
948 * appropriate.
949 */
950
951 /* Linked list of certificates, keys and chains */
952 struct ssl_excert_st {
953 int certform;
954 const char *certfile;
955 int keyform;
956 const char *keyfile;
957 const char *chainfile;
958 X509 *cert;
959 EVP_PKEY *key;
960 STACK_OF(X509) *chain;
961 int build_chain;
962 struct ssl_excert_st *next, *prev;
963 };
964
965 static STRINT_PAIR chain_flags[] = {
966 {"Overall Validity", CERT_PKEY_VALID},
967 {"Sign with EE key", CERT_PKEY_SIGN},
968 {"EE signature", CERT_PKEY_EE_SIGNATURE},
969 {"CA signature", CERT_PKEY_CA_SIGNATURE},
970 {"EE key parameters", CERT_PKEY_EE_PARAM},
971 {"CA key parameters", CERT_PKEY_CA_PARAM},
972 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
973 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
974 {"Certificate Type", CERT_PKEY_CERT_TYPE},
975 {NULL}
976 };
977
print_chain_flags(SSL * s,int flags)978 static void print_chain_flags(SSL *s, int flags)
979 {
980 STRINT_PAIR *pp;
981
982 for (pp = chain_flags; pp->name; ++pp)
983 BIO_printf(bio_err, "\t%s: %s\n",
984 pp->name,
985 (flags & pp->retval) ? "OK" : "NOT OK");
986 BIO_printf(bio_err, "\tSuite B: ");
987 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
988 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
989 else
990 BIO_printf(bio_err, "not tested\n");
991 }
992
993 /*
994 * Very basic selection callback: just use any certificate chain reported as
995 * valid. More sophisticated could prioritise according to local policy.
996 */
set_cert_cb(SSL * ssl,void * arg)997 static int set_cert_cb(SSL *ssl, void *arg)
998 {
999 int i, rv;
1000 SSL_EXCERT *exc = arg;
1001 #ifdef CERT_CB_TEST_RETRY
1002 static int retry_cnt;
1003
1004 if (retry_cnt < 5) {
1005 retry_cnt++;
1006 BIO_printf(bio_err,
1007 "Certificate callback retry test: count %d\n",
1008 retry_cnt);
1009 return -1;
1010 }
1011 #endif
1012 SSL_certs_clear(ssl);
1013
1014 if (exc == NULL)
1015 return 1;
1016
1017 /*
1018 * Go to end of list and traverse backwards since we prepend newer
1019 * entries this retains the original order.
1020 */
1021 while (exc->next != NULL)
1022 exc = exc->next;
1023
1024 i = 0;
1025
1026 while (exc != NULL) {
1027 i++;
1028 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1029 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1030 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1031 get_nameopt());
1032 BIO_puts(bio_err, "\n");
1033 print_chain_flags(ssl, rv);
1034 if (rv & CERT_PKEY_VALID) {
1035 if (!SSL_use_certificate(ssl, exc->cert)
1036 || !SSL_use_PrivateKey(ssl, exc->key)) {
1037 return 0;
1038 }
1039 /*
1040 * NB: we wouldn't normally do this as it is not efficient
1041 * building chains on each connection better to cache the chain
1042 * in advance.
1043 */
1044 if (exc->build_chain) {
1045 if (!SSL_build_cert_chain(ssl, 0))
1046 return 0;
1047 } else if (exc->chain != NULL) {
1048 if (!SSL_set1_chain(ssl, exc->chain))
1049 return 0;
1050 }
1051 }
1052 exc = exc->prev;
1053 }
1054 return 1;
1055 }
1056
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)1057 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1058 {
1059 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1060 }
1061
ssl_excert_prepend(SSL_EXCERT ** pexc)1062 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1063 {
1064 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
1065
1066 memset(exc, 0, sizeof(*exc));
1067
1068 exc->next = *pexc;
1069 *pexc = exc;
1070
1071 if (exc->next) {
1072 exc->certform = exc->next->certform;
1073 exc->keyform = exc->next->keyform;
1074 exc->next->prev = exc;
1075 } else {
1076 exc->certform = FORMAT_PEM;
1077 exc->keyform = FORMAT_PEM;
1078 }
1079 return 1;
1080
1081 }
1082
ssl_excert_free(SSL_EXCERT * exc)1083 void ssl_excert_free(SSL_EXCERT *exc)
1084 {
1085 SSL_EXCERT *curr;
1086
1087 if (exc == NULL)
1088 return;
1089 while (exc) {
1090 X509_free(exc->cert);
1091 EVP_PKEY_free(exc->key);
1092 OSSL_STACK_OF_X509_free(exc->chain);
1093 curr = exc;
1094 exc = exc->next;
1095 OPENSSL_free(curr);
1096 }
1097 }
1098
load_excert(SSL_EXCERT ** pexc)1099 int load_excert(SSL_EXCERT **pexc)
1100 {
1101 SSL_EXCERT *exc = *pexc;
1102
1103 if (exc == NULL)
1104 return 1;
1105 /* If nothing in list, free and set to NULL */
1106 if (exc->certfile == NULL && exc->next == NULL) {
1107 ssl_excert_free(exc);
1108 *pexc = NULL;
1109 return 1;
1110 }
1111 for (; exc; exc = exc->next) {
1112 if (exc->certfile == NULL) {
1113 BIO_printf(bio_err, "Missing filename\n");
1114 return 0;
1115 }
1116 exc->cert = load_cert(exc->certfile, exc->certform,
1117 "Server Certificate");
1118 if (exc->cert == NULL)
1119 return 0;
1120 if (exc->keyfile != NULL) {
1121 exc->key = load_key(exc->keyfile, exc->keyform,
1122 0, NULL, NULL, "server key");
1123 } else {
1124 exc->key = load_key(exc->certfile, exc->certform,
1125 0, NULL, NULL, "server key");
1126 }
1127 if (exc->key == NULL)
1128 return 0;
1129 if (exc->chainfile != NULL) {
1130 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1131 return 0;
1132 }
1133 }
1134 return 1;
1135 }
1136
1137 enum range { OPT_X_ENUM };
1138
args_excert(int opt,SSL_EXCERT ** pexc)1139 int args_excert(int opt, SSL_EXCERT **pexc)
1140 {
1141 SSL_EXCERT *exc = *pexc;
1142
1143 assert(opt > OPT_X__FIRST);
1144 assert(opt < OPT_X__LAST);
1145
1146 if (exc == NULL) {
1147 if (!ssl_excert_prepend(&exc)) {
1148 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1149 opt_getprog());
1150 goto err;
1151 }
1152 *pexc = exc;
1153 }
1154
1155 switch ((enum range)opt) {
1156 case OPT_X__FIRST:
1157 case OPT_X__LAST:
1158 return 0;
1159 case OPT_X_CERT:
1160 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1161 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1162 goto err;
1163 }
1164 *pexc = exc;
1165 exc->certfile = opt_arg();
1166 break;
1167 case OPT_X_KEY:
1168 if (exc->keyfile != NULL) {
1169 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1170 goto err;
1171 }
1172 exc->keyfile = opt_arg();
1173 break;
1174 case OPT_X_CHAIN:
1175 if (exc->chainfile != NULL) {
1176 BIO_printf(bio_err, "%s: Chain already specified\n",
1177 opt_getprog());
1178 goto err;
1179 }
1180 exc->chainfile = opt_arg();
1181 break;
1182 case OPT_X_CHAIN_BUILD:
1183 exc->build_chain = 1;
1184 break;
1185 case OPT_X_CERTFORM:
1186 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1187 return 0;
1188 break;
1189 case OPT_X_KEYFORM:
1190 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1191 return 0;
1192 break;
1193 }
1194 return 1;
1195
1196 err:
1197 ERR_print_errors(bio_err);
1198 ssl_excert_free(exc);
1199 *pexc = NULL;
1200 return 0;
1201 }
1202
print_raw_cipherlist(SSL * s)1203 static void print_raw_cipherlist(SSL *s)
1204 {
1205 const unsigned char *rlist;
1206 static const unsigned char scsv_id[] = { 0, 0xFF };
1207 size_t i, rlistlen, num;
1208
1209 if (!SSL_is_server(s))
1210 return;
1211 num = SSL_get0_raw_cipherlist(s, NULL);
1212 OPENSSL_assert(num == 2);
1213 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1214 BIO_puts(bio_err, "Client cipher list: ");
1215 for (i = 0; i < rlistlen; i += num, rlist += num) {
1216 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1217 if (i)
1218 BIO_puts(bio_err, ":");
1219 if (c != NULL) {
1220 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1221 } else if (memcmp(rlist, scsv_id, num) == 0) {
1222 BIO_puts(bio_err, "SCSV");
1223 } else {
1224 size_t j;
1225 BIO_puts(bio_err, "0x");
1226 for (j = 0; j < num; j++)
1227 BIO_printf(bio_err, "%02X", rlist[j]);
1228 }
1229 }
1230 BIO_puts(bio_err, "\n");
1231 }
1232
1233 /*
1234 * Hex encoder for TLSA RRdata, not ':' delimited.
1235 */
hexencode(const unsigned char * data,size_t len)1236 static char *hexencode(const unsigned char *data, size_t len)
1237 {
1238 static const char *hex = "0123456789abcdef";
1239 char *out;
1240 char *cp;
1241 size_t outlen = 2 * len + 1;
1242 int ilen = (int) outlen;
1243
1244 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1245 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1246 opt_getprog(), len);
1247 exit(1);
1248 }
1249 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1250
1251 while (len-- > 0) {
1252 *cp++ = hex[(*data >> 4) & 0x0f];
1253 *cp++ = hex[*data++ & 0x0f];
1254 }
1255 *cp = '\0';
1256 return out;
1257 }
1258
print_verify_detail(SSL * s,BIO * bio)1259 void print_verify_detail(SSL *s, BIO *bio)
1260 {
1261 int mdpth;
1262 EVP_PKEY *mspki = NULL;
1263 long verify_err = SSL_get_verify_result(s);
1264
1265 if (verify_err == X509_V_OK) {
1266 const char *peername = SSL_get0_peername(s);
1267
1268 BIO_printf(bio, "Verification: OK\n");
1269 if (peername != NULL)
1270 BIO_printf(bio, "Verified peername: %s\n", peername);
1271 } else {
1272 const char *reason = X509_verify_cert_error_string(verify_err);
1273
1274 BIO_printf(bio, "Verification error: %s\n", reason);
1275 }
1276
1277 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1278 uint8_t usage, selector, mtype;
1279 const unsigned char *data = NULL;
1280 size_t dlen = 0;
1281 char *hexdata;
1282
1283 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1284
1285 /*
1286 * The TLSA data field can be quite long when it is a certificate,
1287 * public key or even a SHA2-512 digest. Because the initial octets of
1288 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1289 * and lengths, we show the last 12 bytes of the data instead, as these
1290 * are more likely to distinguish distinct TLSA records.
1291 */
1292 #define TLSA_TAIL_SIZE 12
1293 if (dlen > TLSA_TAIL_SIZE)
1294 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1295 else
1296 hexdata = hexencode(data, dlen);
1297 BIO_printf(bio, "DANE TLSA %d %d %d %s%s ",
1298 usage, selector, mtype,
1299 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata);
1300 if (SSL_get0_peer_rpk(s) == NULL)
1301 BIO_printf(bio, "%s certificate at depth %d\n",
1302 (mspki != NULL) ? "signed the peer" :
1303 mdpth ? "matched the TA" : "matched the EE", mdpth);
1304 else
1305 BIO_printf(bio, "matched the peer raw public key\n");
1306 OPENSSL_free(hexdata);
1307 }
1308 }
1309
print_ssl_summary(SSL * s)1310 void print_ssl_summary(SSL *s)
1311 {
1312 const char *sigalg;
1313 const SSL_CIPHER *c;
1314 X509 *peer = SSL_get0_peer_certificate(s);
1315 EVP_PKEY *peer_rpk = SSL_get0_peer_rpk(s);
1316 int nid;
1317
1318 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1319 print_raw_cipherlist(s);
1320 c = SSL_get_current_cipher(s);
1321 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1322 do_print_sigalgs(bio_err, s, 0);
1323 if (peer != NULL) {
1324 BIO_puts(bio_err, "Peer certificate: ");
1325 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1326 0, get_nameopt());
1327 BIO_puts(bio_err, "\n");
1328 if (SSL_get_peer_signature_nid(s, &nid))
1329 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
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 if (peer_rpk != NULL) {
1334 BIO_printf(bio_err, "Peer used raw public key\n");
1335 if (SSL_get0_peer_signature_name(s, &sigalg))
1336 BIO_printf(bio_err, "Signature type: %s\n", sigalg);
1337 print_verify_detail(s, bio_err);
1338 } else {
1339 BIO_puts(bio_err, "No peer certificate or raw public key\n");
1340 }
1341 #ifndef OPENSSL_NO_EC
1342 ssl_print_point_formats(bio_err, s);
1343 if (SSL_is_server(s))
1344 ssl_print_groups(bio_err, s, 1);
1345 #endif
1346 ssl_print_tmp_key(bio_err, s);
1347 }
1348
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1349 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1350 SSL_CTX *ctx)
1351 {
1352 int i;
1353
1354 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1355 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1356 const char *flag = sk_OPENSSL_STRING_value(str, i);
1357 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1358
1359 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1360 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1361 flag, arg == NULL ? "<NULL>" : arg);
1362 ERR_print_errors(bio_err);
1363 return 0;
1364 }
1365 }
1366 if (!SSL_CONF_CTX_finish(cctx)) {
1367 BIO_puts(bio_err, "Error finishing context\n");
1368 ERR_print_errors(bio_err);
1369 return 0;
1370 }
1371 return 1;
1372 }
1373
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1374 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1375 {
1376 X509_CRL *crl;
1377 int i, ret = 1;
1378
1379 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1380 crl = sk_X509_CRL_value(crls, i);
1381 if (!X509_STORE_add_crl(st, crl))
1382 ret = 0;
1383 }
1384 return ret;
1385 }
1386
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1387 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1388 {
1389 X509_STORE *st;
1390
1391 st = SSL_CTX_get_cert_store(ctx);
1392 add_crls_store(st, crls);
1393 if (crl_download)
1394 store_setup_crl_download(st);
1395 return 1;
1396 }
1397
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)1398 int ssl_load_stores(SSL_CTX *ctx,
1399 const char *vfyCApath, const char *vfyCAfile,
1400 const char *vfyCAstore,
1401 const char *chCApath, const char *chCAfile,
1402 const char *chCAstore,
1403 STACK_OF(X509_CRL) *crls, int crl_download)
1404 {
1405 X509_STORE *vfy = NULL, *ch = NULL;
1406 int rv = 0;
1407
1408 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1409 vfy = X509_STORE_new();
1410 if (vfy == NULL)
1411 goto err;
1412 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1413 goto err;
1414 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1415 goto err;
1416 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1417 goto err;
1418 add_crls_store(vfy, crls);
1419 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1420 goto err;
1421 if (crl_download)
1422 store_setup_crl_download(vfy);
1423 }
1424 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1425 ch = X509_STORE_new();
1426 if (ch == NULL)
1427 goto err;
1428 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1429 goto err;
1430 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1431 goto err;
1432 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1433 goto err;
1434 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1435 goto err;
1436 }
1437 rv = 1;
1438 err:
1439 X509_STORE_free(vfy);
1440 X509_STORE_free(ch);
1441 return rv;
1442 }
1443
1444 /* Verbose print out of security callback */
1445
1446 typedef struct {
1447 BIO *out;
1448 int verbose;
1449 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1450 void *other, void *ex);
1451 } security_debug_ex;
1452
1453 static STRINT_PAIR callback_types[] = {
1454 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1455 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1456 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1457 #ifndef OPENSSL_NO_DH
1458 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1459 #endif
1460 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1461 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1462 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1463 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1464 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1465 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1466 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1467 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1468 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1469 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1470 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1471 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1472 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1473 {"SSL compression", SSL_SECOP_COMPRESSION},
1474 {"Session ticket", SSL_SECOP_TICKET},
1475 {NULL}
1476 };
1477
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1478 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1479 int op, int bits, int nid,
1480 void *other, void *ex)
1481 {
1482 security_debug_ex *sdb = ex;
1483 int rv, show_bits = 1, cert_md = 0;
1484 const char *nm;
1485 int show_nm;
1486
1487 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1488 if (rv == 1 && sdb->verbose < 2)
1489 return 1;
1490 BIO_puts(sdb->out, "Security callback: ");
1491
1492 nm = lookup(op, callback_types, NULL);
1493 show_nm = nm != NULL;
1494 switch (op) {
1495 case SSL_SECOP_TICKET:
1496 case SSL_SECOP_COMPRESSION:
1497 show_bits = 0;
1498 show_nm = 0;
1499 break;
1500 case SSL_SECOP_VERSION:
1501 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1502 show_bits = 0;
1503 show_nm = 0;
1504 break;
1505 case SSL_SECOP_CA_MD:
1506 case SSL_SECOP_PEER_CA_MD:
1507 cert_md = 1;
1508 break;
1509 case SSL_SECOP_SIGALG_SUPPORTED:
1510 case SSL_SECOP_SIGALG_SHARED:
1511 case SSL_SECOP_SIGALG_CHECK:
1512 case SSL_SECOP_SIGALG_MASK:
1513 show_nm = 0;
1514 break;
1515 }
1516 if (show_nm)
1517 BIO_printf(sdb->out, "%s=", nm);
1518
1519 switch (op & SSL_SECOP_OTHER_TYPE) {
1520
1521 case SSL_SECOP_OTHER_CIPHER:
1522 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1523 break;
1524
1525 #ifndef OPENSSL_NO_EC
1526 case SSL_SECOP_OTHER_CURVE:
1527 {
1528 const char *cname;
1529 cname = EC_curve_nid2nist(nid);
1530 if (cname == NULL)
1531 cname = OBJ_nid2sn(nid);
1532 BIO_puts(sdb->out, cname);
1533 }
1534 break;
1535 #endif
1536 case SSL_SECOP_OTHER_CERT:
1537 {
1538 if (cert_md) {
1539 int sig_nid = X509_get_signature_nid(other);
1540
1541 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1542 } else {
1543 EVP_PKEY *pkey = X509_get0_pubkey(other);
1544
1545 if (pkey == NULL) {
1546 BIO_printf(sdb->out, "Public key missing");
1547 } else {
1548 const char *algname = "";
1549
1550 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1551 &algname, EVP_PKEY_get0_asn1(pkey));
1552 BIO_printf(sdb->out, "%s, bits=%d",
1553 algname, EVP_PKEY_get_bits(pkey));
1554 }
1555 }
1556 break;
1557 }
1558 case SSL_SECOP_OTHER_SIGALG:
1559 {
1560 const unsigned char *salg = other;
1561 const char *sname = NULL;
1562 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1563 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1564
1565 if (nm != NULL)
1566 BIO_printf(sdb->out, "%s", nm);
1567 else
1568 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1569
1570 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1571 if (sname != NULL) {
1572 BIO_printf(sdb->out, " scheme=%s", sname);
1573 } else {
1574 int alg_code = salg[1];
1575 int hash_code = salg[0];
1576 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1577 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1578
1579 if (alg_str != NULL && hash_str != NULL)
1580 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1581 else
1582 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1583 }
1584 }
1585
1586 }
1587
1588 if (show_bits)
1589 BIO_printf(sdb->out, ", security bits=%d", bits);
1590 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1591 return rv;
1592 }
1593
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1594 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1595 {
1596 static security_debug_ex sdb;
1597
1598 sdb.out = bio_err;
1599 sdb.verbose = verbose;
1600 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1601 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1602 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1603 }
1604
keylog_callback(const SSL * ssl,const char * line)1605 static void keylog_callback(const SSL *ssl, const char *line)
1606 {
1607 if (bio_keylog == NULL) {
1608 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1609 return;
1610 }
1611
1612 /*
1613 * There might be concurrent writers to the keylog file, so we must ensure
1614 * that the given line is written at once.
1615 */
1616 BIO_printf(bio_keylog, "%s\n", line);
1617 (void)BIO_flush(bio_keylog);
1618 }
1619
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1620 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1621 {
1622 /* Close any open files */
1623 BIO_free_all(bio_keylog);
1624 bio_keylog = NULL;
1625
1626 if (ctx == NULL || keylog_file == NULL) {
1627 /* Keylogging is disabled, OK. */
1628 return 0;
1629 }
1630
1631 /*
1632 * Append rather than write in order to allow concurrent modification.
1633 * Furthermore, this preserves existing keylog files which is useful when
1634 * the tool is run multiple times.
1635 */
1636 bio_keylog = BIO_new_file(keylog_file, "a");
1637 if (bio_keylog == NULL) {
1638 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1639 return 1;
1640 }
1641
1642 /* Write a header for seekable, empty files (this excludes pipes). */
1643 if (BIO_tell(bio_keylog) == 0) {
1644 BIO_puts(bio_keylog,
1645 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1646 (void)BIO_flush(bio_keylog);
1647 }
1648 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1649 return 0;
1650 }
1651
print_ca_names(BIO * bio,SSL * s)1652 void print_ca_names(BIO *bio, SSL *s)
1653 {
1654 const char *cs = SSL_is_server(s) ? "server" : "client";
1655 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1656 int i;
1657
1658 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1659 if (!SSL_is_server(s))
1660 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1661 return;
1662 }
1663
1664 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n", cs);
1665 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1666 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1667 BIO_write(bio, "\n", 1);
1668 }
1669 }
1670
ssl_print_secure_renegotiation_notes(BIO * bio,SSL * s)1671 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s)
1672 {
1673 if (SSL_VERSION_ALLOWS_RENEGOTIATION(s)) {
1674 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1675 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1676 } else {
1677 BIO_printf(bio, "This TLS version forbids renegotiation.\n");
1678 }
1679 }
1680
progress_cb(EVP_PKEY_CTX * ctx)1681 int progress_cb(EVP_PKEY_CTX *ctx)
1682 {
1683 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1684 int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1685 static const char symbols[] = ".+*\n";
1686 char c = (p >= 0 && (size_t)p <= sizeof(symbols) - 1) ? symbols[p] : '?';
1687
1688 BIO_write(b, &c, 1);
1689 (void)BIO_flush(b);
1690 return 1;
1691 }
1692