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 case X509_V_ERR_OCSP_NO_RESPONSE:
110 if (!verify_args.quiet)
111 BIO_printf(bio_err, "no OCSP response(s) for certificate(s) found.\n");
112 break;
113 }
114 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
115 policies_print(ctx);
116 if (ok && !verify_args.quiet)
117 BIO_printf(bio_err, "verify return:%d\n", ok);
118 return ok;
119 }
120
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)121 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
122 {
123 if (cert_file != NULL) {
124 if (SSL_CTX_use_certificate_file(ctx, cert_file,
125 SSL_FILETYPE_PEM) <= 0) {
126 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
127 cert_file);
128 ERR_print_errors(bio_err);
129 return 0;
130 }
131 if (key_file == NULL)
132 key_file = cert_file;
133 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
134 BIO_printf(bio_err, "unable to get private key from '%s'\n",
135 key_file);
136 ERR_print_errors(bio_err);
137 return 0;
138 }
139
140 /*
141 * If we are using DSA, we can copy the parameters from the private
142 * key
143 */
144
145 /*
146 * Now we know that a key and cert have been set against the SSL
147 * context
148 */
149 if (!SSL_CTX_check_private_key(ctx)) {
150 BIO_printf(bio_err,
151 "Private key does not match the certificate public key\n");
152 return 0;
153 }
154 }
155 return 1;
156 }
157
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)158 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
159 STACK_OF(X509) *chain, int build_chain)
160 {
161 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
162
163 if (cert == NULL)
164 return 1;
165 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
166 BIO_printf(bio_err, "error setting certificate\n");
167 ERR_print_errors(bio_err);
168 return 0;
169 }
170
171 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
172 BIO_printf(bio_err, "error setting private key\n");
173 ERR_print_errors(bio_err);
174 return 0;
175 }
176
177 /*
178 * Now we know that a key and cert have been set against the SSL context
179 */
180 if (!SSL_CTX_check_private_key(ctx)) {
181 BIO_printf(bio_err,
182 "Private key does not match the certificate public key\n");
183 return 0;
184 }
185 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
186 BIO_printf(bio_err, "error setting certificate chain\n");
187 ERR_print_errors(bio_err);
188 return 0;
189 }
190 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
191 BIO_printf(bio_err, "error building certificate chain\n");
192 ERR_print_errors(bio_err);
193 return 0;
194 }
195 return 1;
196 }
197
198 static STRINT_PAIR cert_type_list[] = {
199 {"RSA sign", TLS_CT_RSA_SIGN},
200 {"DSA sign", TLS_CT_DSS_SIGN},
201 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
202 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
203 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
204 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
205 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
206 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
207 {"GOST12 Sign", TLS_CT_GOST12_IANA_SIGN},
208 {NULL}
209 };
210
ssl_print_client_cert_types(BIO * bio,SSL * s)211 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
212 {
213 const unsigned char *p;
214 int i;
215 int cert_type_num = SSL_get0_certificate_types(s, &p);
216
217 if (!cert_type_num)
218 return;
219 BIO_puts(bio, "Client Certificate Types: ");
220 for (i = 0; i < cert_type_num; i++) {
221 unsigned char cert_type = p[i];
222 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
223
224 if (i)
225 BIO_puts(bio, ", ");
226 if (cname != NULL)
227 BIO_puts(bio, cname);
228 else
229 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
230 }
231 BIO_puts(bio, "\n");
232 }
233
get_sigtype(int nid)234 static const char *get_sigtype(int nid)
235 {
236 switch (nid) {
237 case EVP_PKEY_RSA:
238 return "RSA";
239
240 case EVP_PKEY_RSA_PSS:
241 return "RSA-PSS";
242
243 case EVP_PKEY_DSA:
244 return "DSA";
245
246 case EVP_PKEY_EC:
247 return "ECDSA";
248
249 case NID_ED25519:
250 return "ed25519";
251
252 case NID_ED448:
253 return "ed448";
254
255 case NID_id_GostR3410_2001:
256 return "gost2001";
257
258 case NID_id_GostR3410_2012_256:
259 return "gost2012_256";
260
261 case NID_id_GostR3410_2012_512:
262 return "gost2012_512";
263
264 default:
265 /* Try to output provider-registered sig alg name */
266 return OBJ_nid2sn(nid);
267 }
268 }
269
do_print_sigalgs(BIO * out,SSL * s,int shared)270 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
271 {
272 int i, nsig, client;
273
274 client = SSL_is_server(s) ? 0 : 1;
275 if (shared)
276 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
277 else
278 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
279 if (nsig == 0)
280 return 1;
281
282 if (shared)
283 BIO_puts(out, "Shared ");
284
285 if (client)
286 BIO_puts(out, "Requested ");
287 BIO_puts(out, "Signature Algorithms: ");
288 for (i = 0; i < nsig; i++) {
289 int hash_nid, sign_nid;
290 unsigned char rhash, rsign;
291 const char *sstr = NULL;
292 if (shared)
293 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
294 &rsign, &rhash);
295 else
296 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
297 if (i)
298 BIO_puts(out, ":");
299 switch (rsign | rhash << 8) {
300 case 0x0809:
301 BIO_puts(out, "rsa_pss_pss_sha256");
302 continue;
303 case 0x080a:
304 BIO_puts(out, "rsa_pss_pss_sha384");
305 continue;
306 case 0x080b:
307 BIO_puts(out, "rsa_pss_pss_sha512");
308 continue;
309 case 0x081a:
310 BIO_puts(out, "ecdsa_brainpoolP256r1_sha256");
311 continue;
312 case 0x081b:
313 BIO_puts(out, "ecdsa_brainpoolP384r1_sha384");
314 continue;
315 case 0x081c:
316 BIO_puts(out, "ecdsa_brainpoolP512r1_sha512");
317 continue;
318 }
319 sstr = get_sigtype(sign_nid);
320 if (sstr)
321 BIO_printf(out, "%s", sstr);
322 else
323 BIO_printf(out, "0x%02X", (int)rsign);
324 if (hash_nid != NID_undef)
325 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
326 else if (sstr == NULL)
327 BIO_printf(out, "+0x%02X", (int)rhash);
328 }
329 BIO_puts(out, "\n");
330 return 1;
331 }
332
ssl_print_sigalgs(BIO * out,SSL * s)333 int ssl_print_sigalgs(BIO *out, SSL *s)
334 {
335 const char *name;
336 int nid;
337
338 if (!SSL_is_server(s))
339 ssl_print_client_cert_types(out, s);
340 do_print_sigalgs(out, s, 0);
341 do_print_sigalgs(out, s, 1);
342 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
343 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
344 if (SSL_get0_peer_signature_name(s, &name))
345 BIO_printf(out, "Peer signature type: %s\n", name);
346 else if (SSL_get_peer_signature_type_nid(s, &nid))
347 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
348 return 1;
349 }
350
351 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)352 int ssl_print_point_formats(BIO *out, SSL *s)
353 {
354 int i, nformats;
355 const char *pformats;
356
357 nformats = SSL_get0_ec_point_formats(s, &pformats);
358 if (nformats <= 0)
359 return 1;
360 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
361 for (i = 0; i < nformats; i++, pformats++) {
362 if (i)
363 BIO_puts(out, ":");
364 switch (*pformats) {
365 case TLSEXT_ECPOINTFORMAT_uncompressed:
366 BIO_puts(out, "uncompressed");
367 break;
368
369 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
370 BIO_puts(out, "ansiX962_compressed_prime");
371 break;
372
373 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
374 BIO_puts(out, "ansiX962_compressed_char2");
375 break;
376
377 default:
378 BIO_printf(out, "unknown(%d)", (int)*pformats);
379 break;
380
381 }
382 }
383 BIO_puts(out, "\n");
384 return 1;
385 }
386
ssl_print_groups(BIO * out,SSL * s,int noshared)387 int ssl_print_groups(BIO *out, SSL *s, int noshared)
388 {
389 int i, ngroups, *groups, nid;
390
391 ngroups = SSL_get1_groups(s, NULL);
392 if (ngroups <= 0)
393 return 1;
394 groups = app_malloc(ngroups * sizeof(int), "groups to print");
395 SSL_get1_groups(s, groups);
396
397 BIO_puts(out, "Supported groups: ");
398 for (i = 0; i < ngroups; i++) {
399 if (i)
400 BIO_puts(out, ":");
401 nid = groups[i];
402 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
403 }
404 OPENSSL_free(groups);
405 if (noshared) {
406 BIO_puts(out, "\n");
407 return 1;
408 }
409 BIO_puts(out, "\nShared groups: ");
410 ngroups = SSL_get_shared_group(s, -1);
411 for (i = 0; i < ngroups; i++) {
412 if (i)
413 BIO_puts(out, ":");
414 nid = SSL_get_shared_group(s, i);
415 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
416 }
417 if (ngroups == 0)
418 BIO_puts(out, "NONE");
419 BIO_puts(out, "\n");
420 return 1;
421 }
422 #endif
423
ssl_print_tmp_key(BIO * out,SSL * s)424 int ssl_print_tmp_key(BIO *out, SSL *s)
425 {
426 const char *keyname;
427 EVP_PKEY *key;
428
429 if (!SSL_get_peer_tmp_key(s, &key)) {
430 if (SSL_version(s) == TLS1_3_VERSION)
431 BIO_printf(out, "Negotiated TLS1.3 group: %s\n",
432 SSL_group_to_name(s, SSL_get_negotiated_group(s)));
433 return 1;
434 }
435
436 BIO_puts(out, "Peer Temp Key: ");
437 switch (EVP_PKEY_get_id(key)) {
438 case EVP_PKEY_RSA:
439 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
440 break;
441
442 case EVP_PKEY_KEYMGMT:
443 if ((keyname = EVP_PKEY_get0_type_name(key)) == NULL)
444 keyname = "?";
445 BIO_printf(out, "%s\n", keyname);
446 break;
447
448 case EVP_PKEY_DH:
449 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
450 break;
451 #ifndef OPENSSL_NO_EC
452 case EVP_PKEY_EC:
453 {
454 char name[80];
455 size_t name_len;
456
457 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
458 name, sizeof(name), &name_len))
459 strcpy(name, "?");
460 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
461 }
462 break;
463 #endif
464 default:
465 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
466 EVP_PKEY_get_bits(key));
467 }
468 EVP_PKEY_free(key);
469 return 1;
470 }
471
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)472 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
473 int argi, long argl, int ret, size_t *processed)
474 {
475 BIO *out;
476 BIO_MMSG_CB_ARGS *mmsgargs;
477 size_t i;
478
479 out = (BIO *)BIO_get_callback_arg(bio);
480 if (out == NULL)
481 return ret;
482
483 switch (cmd) {
484 case (BIO_CB_READ | BIO_CB_RETURN):
485 if (ret > 0 && processed != NULL) {
486 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
487 (void *)bio, (void *)argp, len, *processed, *processed);
488 BIO_dump(out, argp, (int)*processed);
489 } else {
490 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
491 (void *)bio, (void *)argp, len, ret);
492 }
493 break;
494
495 case (BIO_CB_WRITE | BIO_CB_RETURN):
496 if (ret > 0 && processed != NULL) {
497 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
498 (void *)bio, (void *)argp, len, *processed, *processed);
499 BIO_dump(out, argp, (int)*processed);
500 } else {
501 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
502 (void *)bio, (void *)argp, len, ret);
503 }
504 break;
505
506 case (BIO_CB_RECVMMSG | BIO_CB_RETURN):
507 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
508 if (ret > 0) {
509 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
510 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
511 + (i * mmsgargs->stride));
512
513 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
514 (void *)bio, (void *)msg->data, msg->data_len,
515 msg->data_len, msg->data_len);
516 if (msg->data_len <= INT_MAX)
517 BIO_dump(out, msg->data, (int)msg->data_len);
518 }
519 } else if (mmsgargs->num_msg > 0) {
520 BIO_MSG *msg = mmsgargs->msg;
521
522 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
523 (void *)bio, (void *)msg->data, msg->data_len, ret);
524 }
525 break;
526
527 case (BIO_CB_SENDMMSG | BIO_CB_RETURN):
528 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
529 if (ret > 0) {
530 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
531 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
532 + (i * mmsgargs->stride));
533
534 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
535 (void *)bio, (void *)msg->data, msg->data_len,
536 msg->data_len, msg->data_len);
537 if (msg->data_len <= INT_MAX)
538 BIO_dump(out, msg->data, (int)msg->data_len);
539 }
540 } else if (mmsgargs->num_msg > 0) {
541 BIO_MSG *msg = mmsgargs->msg;
542
543 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
544 (void *)bio, (void *)msg->data, msg->data_len, ret);
545 }
546 break;
547
548 default:
549 /* do nothing */
550 break;
551 }
552 return ret;
553 }
554
apps_ssl_info_callback(const SSL * s,int where,int ret)555 void apps_ssl_info_callback(const SSL *s, int where, int ret)
556 {
557 const char *str;
558 int w;
559
560 w = where & ~SSL_ST_MASK;
561
562 if (w & SSL_ST_CONNECT)
563 str = "SSL_connect";
564 else if (w & SSL_ST_ACCEPT)
565 str = "SSL_accept";
566 else
567 str = "undefined";
568
569 if (where & SSL_CB_LOOP) {
570 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
571 } else if (where & SSL_CB_ALERT) {
572 str = (where & SSL_CB_READ) ? "read" : "write";
573 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
574 str,
575 SSL_alert_type_string_long(ret),
576 SSL_alert_desc_string_long(ret));
577 } else if (where & SSL_CB_EXIT) {
578 if (ret == 0)
579 BIO_printf(bio_err, "%s:failed in %s\n",
580 str, SSL_state_string_long(s));
581 else if (ret < 0)
582 BIO_printf(bio_err, "%s:error in %s\n",
583 str, SSL_state_string_long(s));
584 }
585 }
586
587 static STRINT_PAIR ssl_versions[] = {
588 {"SSL 3.0", SSL3_VERSION},
589 {"TLS 1.0", TLS1_VERSION},
590 {"TLS 1.1", TLS1_1_VERSION},
591 {"TLS 1.2", TLS1_2_VERSION},
592 {"TLS 1.3", TLS1_3_VERSION},
593 {"DTLS 1.0", DTLS1_VERSION},
594 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
595 {NULL}
596 };
597
598 static STRINT_PAIR alert_types[] = {
599 {" close_notify", 0},
600 {" end_of_early_data", 1},
601 {" unexpected_message", 10},
602 {" bad_record_mac", 20},
603 {" decryption_failed", 21},
604 {" record_overflow", 22},
605 {" decompression_failure", 30},
606 {" handshake_failure", 40},
607 {" bad_certificate", 42},
608 {" unsupported_certificate", 43},
609 {" certificate_revoked", 44},
610 {" certificate_expired", 45},
611 {" certificate_unknown", 46},
612 {" illegal_parameter", 47},
613 {" unknown_ca", 48},
614 {" access_denied", 49},
615 {" decode_error", 50},
616 {" decrypt_error", 51},
617 {" export_restriction", 60},
618 {" protocol_version", 70},
619 {" insufficient_security", 71},
620 {" internal_error", 80},
621 {" inappropriate_fallback", 86},
622 {" user_canceled", 90},
623 {" no_renegotiation", 100},
624 {" missing_extension", 109},
625 {" unsupported_extension", 110},
626 {" certificate_unobtainable", 111},
627 {" unrecognized_name", 112},
628 {" bad_certificate_status_response", 113},
629 {" bad_certificate_hash_value", 114},
630 {" unknown_psk_identity", 115},
631 {" certificate_required", 116},
632 {NULL}
633 };
634
635 static STRINT_PAIR handshakes[] = {
636 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
637 {", ClientHello", SSL3_MT_CLIENT_HELLO},
638 {", ServerHello", SSL3_MT_SERVER_HELLO},
639 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
640 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
641 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
642 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
643 {", Certificate", SSL3_MT_CERTIFICATE},
644 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
645 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
646 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
647 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
648 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
649 {", Finished", SSL3_MT_FINISHED},
650 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
651 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
652 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
653 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
654 {", CompressedCertificate", SSL3_MT_COMPRESSED_CERTIFICATE},
655 #ifndef OPENSSL_NO_NEXTPROTONEG
656 {", NextProto", SSL3_MT_NEXT_PROTO},
657 #endif
658 {", MessageHash", SSL3_MT_MESSAGE_HASH},
659 {NULL}
660 };
661
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)662 void msg_cb(int write_p, int version, int content_type, const void *buf,
663 size_t len, SSL *ssl, void *arg)
664 {
665 BIO *bio = arg;
666 const char *str_write_p = write_p ? ">>>" : "<<<";
667 char tmpbuf[128];
668 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
669 const unsigned char* bp = buf;
670
671 if (version == SSL3_VERSION ||
672 version == TLS1_VERSION ||
673 version == TLS1_1_VERSION ||
674 version == TLS1_2_VERSION ||
675 version == TLS1_3_VERSION ||
676 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
677 str_version = lookup(version, ssl_versions, "???");
678 switch (content_type) {
679 case SSL3_RT_CHANGE_CIPHER_SPEC:
680 /* type 20 */
681 str_content_type = ", ChangeCipherSpec";
682 break;
683 case SSL3_RT_ALERT:
684 /* type 21 */
685 str_content_type = ", Alert";
686 str_details1 = ", ???";
687 if (len == 2) {
688 switch (bp[0]) {
689 case 1:
690 str_details1 = ", warning";
691 break;
692 case 2:
693 str_details1 = ", fatal";
694 break;
695 }
696 str_details2 = lookup((int)bp[1], alert_types, " ???");
697 }
698 break;
699 case SSL3_RT_HANDSHAKE:
700 /* type 22 */
701 str_content_type = ", Handshake";
702 str_details1 = "???";
703 if (len > 0)
704 str_details1 = lookup((int)bp[0], handshakes, "???");
705 break;
706 case SSL3_RT_APPLICATION_DATA:
707 /* type 23 */
708 str_content_type = ", ApplicationData";
709 break;
710 case SSL3_RT_HEADER:
711 /* type 256 */
712 str_content_type = ", RecordHeader";
713 break;
714 case SSL3_RT_INNER_CONTENT_TYPE:
715 /* type 257 */
716 str_content_type = ", InnerContent";
717 break;
718 default:
719 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
720 str_content_type = tmpbuf;
721 }
722 } else {
723 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
724 str_version = tmpbuf;
725 }
726
727 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
728 str_content_type, (unsigned long)len, str_details1,
729 str_details2);
730
731 if (len > 0) {
732 size_t num, i;
733
734 BIO_printf(bio, " ");
735 num = len;
736 for (i = 0; i < num; i++) {
737 if (i % 16 == 0 && i > 0)
738 BIO_printf(bio, "\n ");
739 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
740 }
741 if (i < len)
742 BIO_printf(bio, " ...");
743 BIO_printf(bio, "\n");
744 }
745 (void)BIO_flush(bio);
746 }
747
748 static const STRINT_PAIR tlsext_types[] = {
749 {"server name", TLSEXT_TYPE_server_name},
750 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
751 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
752 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
753 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
754 {"status request", TLSEXT_TYPE_status_request},
755 {"user mapping", TLSEXT_TYPE_user_mapping},
756 {"client authz", TLSEXT_TYPE_client_authz},
757 {"server authz", TLSEXT_TYPE_server_authz},
758 {"cert type", TLSEXT_TYPE_cert_type},
759 {"supported_groups", TLSEXT_TYPE_supported_groups},
760 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
761 {"SRP", TLSEXT_TYPE_srp},
762 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
763 {"use SRTP", TLSEXT_TYPE_use_srtp},
764 {"session ticket", TLSEXT_TYPE_session_ticket},
765 {"renegotiation info", TLSEXT_TYPE_renegotiate},
766 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
767 {"client cert type", TLSEXT_TYPE_client_cert_type},
768 {"server cert type", TLSEXT_TYPE_server_cert_type},
769 {"TLS padding", TLSEXT_TYPE_padding},
770 #ifdef TLSEXT_TYPE_next_proto_neg
771 {"next protocol", TLSEXT_TYPE_next_proto_neg},
772 #endif
773 #ifdef TLSEXT_TYPE_encrypt_then_mac
774 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
775 #endif
776 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
777 {"application layer protocol negotiation",
778 TLSEXT_TYPE_application_layer_protocol_negotiation},
779 #endif
780 #ifdef TLSEXT_TYPE_extended_master_secret
781 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
782 #endif
783 {"compress certificate", TLSEXT_TYPE_compress_certificate},
784 {"key share", TLSEXT_TYPE_key_share},
785 {"supported versions", TLSEXT_TYPE_supported_versions},
786 {"psk", TLSEXT_TYPE_psk},
787 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
788 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
789 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
790 {"early_data", TLSEXT_TYPE_early_data},
791 {NULL}
792 };
793
794 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
795 static STRINT_PAIR signature_tls13_scheme_list[] = {
796 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
797 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
798 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
799 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
800 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
801 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
802 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
803 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
804 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
805 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
806 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
807 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
808 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
809 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
810 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
811 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
812 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
813 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
814 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
815 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
816 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
817 {NULL}
818 };
819
820 /* from rfc5246 7.4.1.4.1. */
821 static STRINT_PAIR signature_tls12_alg_list[] = {
822 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
823 {"RSA", TLSEXT_signature_rsa /* 1 */},
824 {"DSA", TLSEXT_signature_dsa /* 2 */},
825 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
826 {NULL}
827 };
828
829 /* from rfc5246 7.4.1.4.1. */
830 static STRINT_PAIR signature_tls12_hash_list[] = {
831 {"none", TLSEXT_hash_none /* 0 */},
832 {"MD5", TLSEXT_hash_md5 /* 1 */},
833 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
834 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
835 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
836 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
837 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
838 {NULL}
839 };
840
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)841 void tlsext_cb(SSL *s, int client_server, int type,
842 const unsigned char *data, int len, void *arg)
843 {
844 BIO *bio = arg;
845 const char *extname = lookup(type, tlsext_types, "unknown");
846
847 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
848 client_server ? "server" : "client", extname, type, len);
849 BIO_dump(bio, (const char *)data, len);
850 (void)BIO_flush(bio);
851 }
852
853 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)854 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
855 size_t *cookie_len)
856 {
857 unsigned char *buffer = NULL;
858 size_t length = 0;
859 unsigned short port;
860 BIO_ADDR *lpeer = NULL, *peer = NULL;
861 int res = 0;
862
863 /* Initialize a random secret */
864 if (!cookie_initialized) {
865 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
866 BIO_printf(bio_err, "error setting random cookie secret\n");
867 return 0;
868 }
869 cookie_initialized = 1;
870 }
871
872 if (SSL_is_dtls(ssl)) {
873 lpeer = peer = BIO_ADDR_new();
874 if (peer == NULL) {
875 BIO_printf(bio_err, "memory full\n");
876 return 0;
877 }
878
879 /* Read peer information */
880 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
881 } else {
882 peer = ourpeer;
883 }
884
885 /* Create buffer with peer's address and port */
886 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
887 BIO_printf(bio_err, "Failed getting peer address\n");
888 BIO_ADDR_free(lpeer);
889 return 0;
890 }
891 OPENSSL_assert(length != 0);
892 port = BIO_ADDR_rawport(peer);
893 length += sizeof(port);
894 buffer = app_malloc(length, "cookie generate buffer");
895
896 memcpy(buffer, &port, sizeof(port));
897 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
898
899 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
900 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
901 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
902 BIO_printf(bio_err,
903 "Error calculating HMAC-SHA1 of buffer with secret\n");
904 goto end;
905 }
906 res = 1;
907 end:
908 OPENSSL_free(buffer);
909 BIO_ADDR_free(lpeer);
910
911 return res;
912 }
913
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)914 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
915 size_t cookie_len)
916 {
917 unsigned char result[EVP_MAX_MD_SIZE];
918 size_t resultlength;
919
920 /* Note: we check cookie_initialized because if it's not,
921 * it cannot be valid */
922 if (cookie_initialized
923 && generate_stateless_cookie_callback(ssl, result, &resultlength)
924 && cookie_len == resultlength
925 && memcmp(result, cookie, resultlength) == 0)
926 return 1;
927
928 return 0;
929 }
930
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)931 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
932 unsigned int *cookie_len)
933 {
934 size_t temp = 0;
935 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
936
937 if (res != 0)
938 *cookie_len = (unsigned int)temp;
939 return res;
940 }
941
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)942 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
943 unsigned int cookie_len)
944 {
945 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
946 }
947
948 #endif
949
950 /*
951 * Example of extended certificate handling. Where the standard support of
952 * one certificate per algorithm is not sufficient an application can decide
953 * which certificate(s) to use at runtime based on whatever criteria it deems
954 * appropriate.
955 */
956
957 /* Linked list of certificates, keys and chains */
958 struct ssl_excert_st {
959 int certform;
960 const char *certfile;
961 int keyform;
962 const char *keyfile;
963 const char *chainfile;
964 X509 *cert;
965 EVP_PKEY *key;
966 STACK_OF(X509) *chain;
967 int build_chain;
968 struct ssl_excert_st *next, *prev;
969 };
970
971 static STRINT_PAIR chain_flags[] = {
972 {"Overall Validity", CERT_PKEY_VALID},
973 {"Sign with EE key", CERT_PKEY_SIGN},
974 {"EE signature", CERT_PKEY_EE_SIGNATURE},
975 {"CA signature", CERT_PKEY_CA_SIGNATURE},
976 {"EE key parameters", CERT_PKEY_EE_PARAM},
977 {"CA key parameters", CERT_PKEY_CA_PARAM},
978 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
979 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
980 {"Certificate Type", CERT_PKEY_CERT_TYPE},
981 {NULL}
982 };
983
print_chain_flags(SSL * s,int flags)984 static void print_chain_flags(SSL *s, int flags)
985 {
986 STRINT_PAIR *pp;
987
988 for (pp = chain_flags; pp->name; ++pp)
989 BIO_printf(bio_err, "\t%s: %s\n",
990 pp->name,
991 (flags & pp->retval) ? "OK" : "NOT OK");
992 BIO_printf(bio_err, "\tSuite B: ");
993 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
994 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
995 else
996 BIO_printf(bio_err, "not tested\n");
997 }
998
999 /*
1000 * Very basic selection callback: just use any certificate chain reported as
1001 * valid. More sophisticated could prioritise according to local policy.
1002 */
set_cert_cb(SSL * ssl,void * arg)1003 static int set_cert_cb(SSL *ssl, void *arg)
1004 {
1005 int i, rv;
1006 SSL_EXCERT *exc = arg;
1007 #ifdef CERT_CB_TEST_RETRY
1008 static int retry_cnt;
1009
1010 if (retry_cnt < 5) {
1011 retry_cnt++;
1012 BIO_printf(bio_err,
1013 "Certificate callback retry test: count %d\n",
1014 retry_cnt);
1015 return -1;
1016 }
1017 #endif
1018 SSL_certs_clear(ssl);
1019
1020 if (exc == NULL)
1021 return 1;
1022
1023 /*
1024 * Go to end of list and traverse backwards since we prepend newer
1025 * entries this retains the original order.
1026 */
1027 while (exc->next != NULL)
1028 exc = exc->next;
1029
1030 i = 0;
1031
1032 while (exc != NULL) {
1033 i++;
1034 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1035 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1036 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1037 get_nameopt());
1038 BIO_puts(bio_err, "\n");
1039 print_chain_flags(ssl, rv);
1040 if (rv & CERT_PKEY_VALID) {
1041 if (!SSL_use_certificate(ssl, exc->cert)
1042 || !SSL_use_PrivateKey(ssl, exc->key)) {
1043 return 0;
1044 }
1045 /*
1046 * NB: we wouldn't normally do this as it is not efficient
1047 * building chains on each connection better to cache the chain
1048 * in advance.
1049 */
1050 if (exc->build_chain) {
1051 if (!SSL_build_cert_chain(ssl, 0))
1052 return 0;
1053 } else if (exc->chain != NULL) {
1054 if (!SSL_set1_chain(ssl, exc->chain))
1055 return 0;
1056 }
1057 }
1058 exc = exc->prev;
1059 }
1060 return 1;
1061 }
1062
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)1063 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1064 {
1065 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1066 }
1067
ssl_excert_prepend(SSL_EXCERT ** pexc)1068 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1069 {
1070 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
1071
1072 memset(exc, 0, sizeof(*exc));
1073
1074 exc->next = *pexc;
1075 *pexc = exc;
1076
1077 if (exc->next) {
1078 exc->certform = exc->next->certform;
1079 exc->keyform = exc->next->keyform;
1080 exc->next->prev = exc;
1081 } else {
1082 exc->certform = FORMAT_PEM;
1083 exc->keyform = FORMAT_PEM;
1084 }
1085 return 1;
1086
1087 }
1088
ssl_excert_free(SSL_EXCERT * exc)1089 void ssl_excert_free(SSL_EXCERT *exc)
1090 {
1091 SSL_EXCERT *curr;
1092
1093 if (exc == NULL)
1094 return;
1095 while (exc) {
1096 X509_free(exc->cert);
1097 EVP_PKEY_free(exc->key);
1098 OSSL_STACK_OF_X509_free(exc->chain);
1099 curr = exc;
1100 exc = exc->next;
1101 OPENSSL_free(curr);
1102 }
1103 }
1104
load_excert(SSL_EXCERT ** pexc)1105 int load_excert(SSL_EXCERT **pexc)
1106 {
1107 SSL_EXCERT *exc = *pexc;
1108
1109 if (exc == NULL)
1110 return 1;
1111 /* If nothing in list, free and set to NULL */
1112 if (exc->certfile == NULL && exc->next == NULL) {
1113 ssl_excert_free(exc);
1114 *pexc = NULL;
1115 return 1;
1116 }
1117 for (; exc; exc = exc->next) {
1118 if (exc->certfile == NULL) {
1119 BIO_printf(bio_err, "Missing filename\n");
1120 return 0;
1121 }
1122 exc->cert = load_cert(exc->certfile, exc->certform,
1123 "Server Certificate");
1124 if (exc->cert == NULL)
1125 return 0;
1126 if (exc->keyfile != NULL) {
1127 exc->key = load_key(exc->keyfile, exc->keyform,
1128 0, NULL, NULL, "server key");
1129 } else {
1130 exc->key = load_key(exc->certfile, exc->certform,
1131 0, NULL, NULL, "server key");
1132 }
1133 if (exc->key == NULL)
1134 return 0;
1135 if (exc->chainfile != NULL) {
1136 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1137 return 0;
1138 }
1139 }
1140 return 1;
1141 }
1142
1143 enum range { OPT_X_ENUM };
1144
args_excert(int opt,SSL_EXCERT ** pexc)1145 int args_excert(int opt, SSL_EXCERT **pexc)
1146 {
1147 SSL_EXCERT *exc = *pexc;
1148
1149 assert(opt > OPT_X__FIRST);
1150 assert(opt < OPT_X__LAST);
1151
1152 if (exc == NULL) {
1153 if (!ssl_excert_prepend(&exc)) {
1154 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1155 opt_getprog());
1156 goto err;
1157 }
1158 *pexc = exc;
1159 }
1160
1161 switch ((enum range)opt) {
1162 case OPT_X__FIRST:
1163 case OPT_X__LAST:
1164 return 0;
1165 case OPT_X_CERT:
1166 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1167 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1168 goto err;
1169 }
1170 *pexc = exc;
1171 exc->certfile = opt_arg();
1172 break;
1173 case OPT_X_KEY:
1174 if (exc->keyfile != NULL) {
1175 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1176 goto err;
1177 }
1178 exc->keyfile = opt_arg();
1179 break;
1180 case OPT_X_CHAIN:
1181 if (exc->chainfile != NULL) {
1182 BIO_printf(bio_err, "%s: Chain already specified\n",
1183 opt_getprog());
1184 goto err;
1185 }
1186 exc->chainfile = opt_arg();
1187 break;
1188 case OPT_X_CHAIN_BUILD:
1189 exc->build_chain = 1;
1190 break;
1191 case OPT_X_CERTFORM:
1192 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1193 return 0;
1194 break;
1195 case OPT_X_KEYFORM:
1196 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1197 return 0;
1198 break;
1199 }
1200 return 1;
1201
1202 err:
1203 ERR_print_errors(bio_err);
1204 ssl_excert_free(exc);
1205 *pexc = NULL;
1206 return 0;
1207 }
1208
print_raw_cipherlist(SSL * s)1209 static void print_raw_cipherlist(SSL *s)
1210 {
1211 const unsigned char *rlist;
1212 static const unsigned char scsv_id[] = { 0, 0xFF };
1213 size_t i, rlistlen, num;
1214
1215 if (!SSL_is_server(s))
1216 return;
1217 num = SSL_get0_raw_cipherlist(s, NULL);
1218 OPENSSL_assert(num == 2);
1219 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1220 BIO_puts(bio_err, "Client cipher list: ");
1221 for (i = 0; i < rlistlen; i += num, rlist += num) {
1222 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1223 if (i)
1224 BIO_puts(bio_err, ":");
1225 if (c != NULL) {
1226 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1227 } else if (memcmp(rlist, scsv_id, num) == 0) {
1228 BIO_puts(bio_err, "SCSV");
1229 } else {
1230 size_t j;
1231 BIO_puts(bio_err, "0x");
1232 for (j = 0; j < num; j++)
1233 BIO_printf(bio_err, "%02X", rlist[j]);
1234 }
1235 }
1236 BIO_puts(bio_err, "\n");
1237 }
1238
1239 /*
1240 * Hex encoder for TLSA RRdata, not ':' delimited.
1241 */
hexencode(const unsigned char * data,size_t len)1242 static char *hexencode(const unsigned char *data, size_t len)
1243 {
1244 static const char *hex = "0123456789abcdef";
1245 char *out;
1246 char *cp;
1247 size_t outlen = 2 * len + 1;
1248 int ilen = (int) outlen;
1249
1250 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1251 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1252 opt_getprog(), len);
1253 exit(1);
1254 }
1255 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1256
1257 while (len-- > 0) {
1258 *cp++ = hex[(*data >> 4) & 0x0f];
1259 *cp++ = hex[*data++ & 0x0f];
1260 }
1261 *cp = '\0';
1262 return out;
1263 }
1264
print_verify_detail(SSL * s,BIO * bio)1265 void print_verify_detail(SSL *s, BIO *bio)
1266 {
1267 int mdpth;
1268 EVP_PKEY *mspki = NULL;
1269 long verify_err = SSL_get_verify_result(s);
1270
1271 if (verify_err == X509_V_OK) {
1272 const char *peername = SSL_get0_peername(s);
1273
1274 BIO_printf(bio, "Verification: OK\n");
1275 if (peername != NULL)
1276 BIO_printf(bio, "Verified peername: %s\n", peername);
1277 } else {
1278 const char *reason = X509_verify_cert_error_string(verify_err);
1279
1280 BIO_printf(bio, "Verification error: %s\n", reason);
1281 }
1282
1283 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1284 uint8_t usage, selector, mtype;
1285 const unsigned char *data = NULL;
1286 size_t dlen = 0;
1287 char *hexdata;
1288
1289 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1290
1291 /*
1292 * The TLSA data field can be quite long when it is a certificate,
1293 * public key or even a SHA2-512 digest. Because the initial octets of
1294 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1295 * and lengths, we show the last 12 bytes of the data instead, as these
1296 * are more likely to distinguish distinct TLSA records.
1297 */
1298 #define TLSA_TAIL_SIZE 12
1299 if (dlen > TLSA_TAIL_SIZE)
1300 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1301 else
1302 hexdata = hexencode(data, dlen);
1303 BIO_printf(bio, "DANE TLSA %d %d %d %s%s ",
1304 usage, selector, mtype,
1305 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata);
1306 if (SSL_get0_peer_rpk(s) == NULL)
1307 BIO_printf(bio, "%s certificate at depth %d\n",
1308 (mspki != NULL) ? "signed the peer" :
1309 mdpth ? "matched the TA" : "matched the EE", mdpth);
1310 else
1311 BIO_printf(bio, "matched the peer raw public key\n");
1312 OPENSSL_free(hexdata);
1313 }
1314 }
1315
print_ssl_summary(SSL * s)1316 void print_ssl_summary(SSL *s)
1317 {
1318 const char *sigalg;
1319 const SSL_CIPHER *c;
1320 X509 *peer = SSL_get0_peer_certificate(s);
1321 EVP_PKEY *peer_rpk = SSL_get0_peer_rpk(s);
1322 int nid;
1323
1324 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1325 print_raw_cipherlist(s);
1326 c = SSL_get_current_cipher(s);
1327 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1328 do_print_sigalgs(bio_err, s, 0);
1329 if (peer != NULL) {
1330 BIO_puts(bio_err, "Peer certificate: ");
1331 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1332 0, get_nameopt());
1333 BIO_puts(bio_err, "\n");
1334 if (SSL_get_peer_signature_nid(s, &nid))
1335 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1336 if (SSL_get0_peer_signature_name(s, &sigalg))
1337 BIO_printf(bio_err, "Signature type: %s\n", sigalg);
1338 print_verify_detail(s, bio_err);
1339 } else if (peer_rpk != NULL) {
1340 BIO_printf(bio_err, "Peer used raw public key\n");
1341 if (SSL_get0_peer_signature_name(s, &sigalg))
1342 BIO_printf(bio_err, "Signature type: %s\n", sigalg);
1343 print_verify_detail(s, bio_err);
1344 } else {
1345 BIO_puts(bio_err, "No peer certificate or raw public key\n");
1346 }
1347 #ifndef OPENSSL_NO_EC
1348 ssl_print_point_formats(bio_err, s);
1349 if (SSL_is_server(s))
1350 ssl_print_groups(bio_err, s, 1);
1351 #endif
1352 ssl_print_tmp_key(bio_err, s);
1353 }
1354
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1355 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1356 SSL_CTX *ctx)
1357 {
1358 int i;
1359
1360 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1361 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1362 const char *flag = sk_OPENSSL_STRING_value(str, i);
1363 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1364
1365 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1366 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1367 flag, arg == NULL ? "<NULL>" : arg);
1368 ERR_print_errors(bio_err);
1369 return 0;
1370 }
1371 }
1372 if (!SSL_CONF_CTX_finish(cctx)) {
1373 BIO_puts(bio_err, "Error finishing context\n");
1374 ERR_print_errors(bio_err);
1375 return 0;
1376 }
1377 return 1;
1378 }
1379
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1380 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1381 {
1382 X509_CRL *crl;
1383 int i, ret = 1;
1384
1385 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1386 crl = sk_X509_CRL_value(crls, i);
1387 if (!X509_STORE_add_crl(st, crl))
1388 ret = 0;
1389 }
1390 return ret;
1391 }
1392
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1393 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1394 {
1395 X509_STORE *st;
1396
1397 st = SSL_CTX_get_cert_store(ctx);
1398 add_crls_store(st, crls);
1399 if (crl_download)
1400 store_setup_crl_download(st);
1401 return 1;
1402 }
1403
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)1404 int ssl_load_stores(SSL_CTX *ctx,
1405 const char *vfyCApath, const char *vfyCAfile,
1406 const char *vfyCAstore,
1407 const char *chCApath, const char *chCAfile,
1408 const char *chCAstore,
1409 STACK_OF(X509_CRL) *crls, int crl_download)
1410 {
1411 X509_STORE *vfy = NULL, *ch = NULL;
1412 int rv = 0;
1413
1414 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1415 vfy = X509_STORE_new();
1416 if (vfy == NULL)
1417 goto err;
1418 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1419 goto err;
1420 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1421 goto err;
1422 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1423 goto err;
1424 add_crls_store(vfy, crls);
1425 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1426 goto err;
1427 if (crl_download)
1428 store_setup_crl_download(vfy);
1429 }
1430 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1431 ch = X509_STORE_new();
1432 if (ch == NULL)
1433 goto err;
1434 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1435 goto err;
1436 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1437 goto err;
1438 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1439 goto err;
1440 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1441 goto err;
1442 }
1443 rv = 1;
1444 err:
1445 X509_STORE_free(vfy);
1446 X509_STORE_free(ch);
1447 return rv;
1448 }
1449
1450 /* Verbose print out of security callback */
1451
1452 typedef struct {
1453 BIO *out;
1454 int verbose;
1455 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1456 void *other, void *ex);
1457 } security_debug_ex;
1458
1459 static STRINT_PAIR callback_types[] = {
1460 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1461 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1462 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1463 #ifndef OPENSSL_NO_DH
1464 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1465 #endif
1466 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1467 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1468 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1469 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1470 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1471 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1472 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1473 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1474 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1475 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1476 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1477 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1478 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1479 {"SSL compression", SSL_SECOP_COMPRESSION},
1480 {"Session ticket", SSL_SECOP_TICKET},
1481 {NULL}
1482 };
1483
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1484 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1485 int op, int bits, int nid,
1486 void *other, void *ex)
1487 {
1488 security_debug_ex *sdb = ex;
1489 int rv, show_bits = 1, cert_md = 0;
1490 const char *nm;
1491 int show_nm;
1492
1493 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1494 if (rv == 1 && sdb->verbose < 2)
1495 return 1;
1496 BIO_puts(sdb->out, "Security callback: ");
1497
1498 nm = lookup(op, callback_types, NULL);
1499 show_nm = nm != NULL;
1500 switch (op) {
1501 case SSL_SECOP_TICKET:
1502 case SSL_SECOP_COMPRESSION:
1503 show_bits = 0;
1504 show_nm = 0;
1505 break;
1506 case SSL_SECOP_VERSION:
1507 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1508 show_bits = 0;
1509 show_nm = 0;
1510 break;
1511 case SSL_SECOP_CA_MD:
1512 case SSL_SECOP_PEER_CA_MD:
1513 cert_md = 1;
1514 break;
1515 case SSL_SECOP_SIGALG_SUPPORTED:
1516 case SSL_SECOP_SIGALG_SHARED:
1517 case SSL_SECOP_SIGALG_CHECK:
1518 case SSL_SECOP_SIGALG_MASK:
1519 show_nm = 0;
1520 break;
1521 }
1522 if (show_nm)
1523 BIO_printf(sdb->out, "%s=", nm);
1524
1525 switch (op & SSL_SECOP_OTHER_TYPE) {
1526
1527 case SSL_SECOP_OTHER_CIPHER:
1528 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1529 break;
1530
1531 #ifndef OPENSSL_NO_EC
1532 case SSL_SECOP_OTHER_CURVE:
1533 {
1534 const char *cname;
1535 cname = EC_curve_nid2nist(nid);
1536 if (cname == NULL)
1537 cname = OBJ_nid2sn(nid);
1538 BIO_puts(sdb->out, cname);
1539 }
1540 break;
1541 #endif
1542 case SSL_SECOP_OTHER_CERT:
1543 {
1544 if (cert_md) {
1545 int sig_nid = X509_get_signature_nid(other);
1546
1547 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1548 } else {
1549 EVP_PKEY *pkey = X509_get0_pubkey(other);
1550
1551 if (pkey == NULL) {
1552 BIO_printf(sdb->out, "Public key missing");
1553 } else {
1554 BIO_printf(sdb->out, "%s, bits=%d",
1555 EVP_PKEY_get0_type_name(pkey),
1556 EVP_PKEY_get_bits(pkey));
1557 }
1558 }
1559 break;
1560 }
1561 case SSL_SECOP_OTHER_SIGALG:
1562 {
1563 const unsigned char *salg = other;
1564 const char *sname = NULL;
1565 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1566 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1567
1568 if (nm != NULL)
1569 BIO_printf(sdb->out, "%s", nm);
1570 else
1571 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1572
1573 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1574 if (sname != NULL) {
1575 BIO_printf(sdb->out, " scheme=%s", sname);
1576 } else {
1577 int alg_code = salg[1];
1578 int hash_code = salg[0];
1579 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1580 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1581
1582 if (alg_str != NULL && hash_str != NULL)
1583 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1584 else
1585 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1586 }
1587 }
1588
1589 }
1590
1591 if (show_bits)
1592 BIO_printf(sdb->out, ", security bits=%d", bits);
1593 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1594 return rv;
1595 }
1596
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1597 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1598 {
1599 static security_debug_ex sdb;
1600
1601 sdb.out = bio_err;
1602 sdb.verbose = verbose;
1603 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1604 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1605 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1606 }
1607
keylog_callback(const SSL * ssl,const char * line)1608 static void keylog_callback(const SSL *ssl, const char *line)
1609 {
1610 if (bio_keylog == NULL) {
1611 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1612 return;
1613 }
1614
1615 /*
1616 * There might be concurrent writers to the keylog file, so we must ensure
1617 * that the given line is written at once.
1618 */
1619 BIO_printf(bio_keylog, "%s\n", line);
1620 (void)BIO_flush(bio_keylog);
1621 }
1622
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1623 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1624 {
1625 /* Close any open files */
1626 BIO_free_all(bio_keylog);
1627 bio_keylog = NULL;
1628
1629 if (ctx == NULL || keylog_file == NULL) {
1630 /* Keylogging is disabled, OK. */
1631 return 0;
1632 }
1633
1634 /*
1635 * Append rather than write in order to allow concurrent modification.
1636 * Furthermore, this preserves existing keylog files which is useful when
1637 * the tool is run multiple times.
1638 */
1639 bio_keylog = BIO_new_file(keylog_file, "a");
1640 if (bio_keylog == NULL) {
1641 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1642 return 1;
1643 }
1644
1645 /* Write a header for seekable, empty files (this excludes pipes). */
1646 if (BIO_tell(bio_keylog) == 0) {
1647 BIO_puts(bio_keylog,
1648 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1649 (void)BIO_flush(bio_keylog);
1650 }
1651 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1652 return 0;
1653 }
1654
print_ca_names(BIO * bio,SSL * s)1655 void print_ca_names(BIO *bio, SSL *s)
1656 {
1657 const char *cs = SSL_is_server(s) ? "server" : "client";
1658 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1659 int i;
1660
1661 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1662 if (!SSL_is_server(s))
1663 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1664 return;
1665 }
1666
1667 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n", cs);
1668 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1669 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1670 BIO_write(bio, "\n", 1);
1671 }
1672 }
1673
ssl_print_secure_renegotiation_notes(BIO * bio,SSL * s)1674 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s)
1675 {
1676 if (SSL_VERSION_ALLOWS_RENEGOTIATION(s)) {
1677 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1678 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1679 } else {
1680 BIO_printf(bio, "This TLS version forbids renegotiation.\n");
1681 }
1682 }
1683
progress_cb(EVP_PKEY_CTX * ctx)1684 int progress_cb(EVP_PKEY_CTX *ctx)
1685 {
1686 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1687 int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1688 static const char symbols[] = ".+*\n";
1689 char c = (p >= 0 && (size_t)p <= sizeof(symbols) - 1) ? symbols[p] : '?';
1690
1691 BIO_write(b, &c, 1);
1692 (void)BIO_flush(b);
1693 return 1;
1694 }
1695