1 /*
2 * Copyright 1995-2024 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 int nid;
332
333 if (!SSL_is_server(s))
334 ssl_print_client_cert_types(out, s);
335 do_print_sigalgs(out, s, 0);
336 do_print_sigalgs(out, s, 1);
337 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
338 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
339 if (SSL_get_peer_signature_type_nid(s, &nid))
340 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
341 return 1;
342 }
343
344 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)345 int ssl_print_point_formats(BIO *out, SSL *s)
346 {
347 int i, nformats;
348 const char *pformats;
349
350 nformats = SSL_get0_ec_point_formats(s, &pformats);
351 if (nformats <= 0)
352 return 1;
353 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
354 for (i = 0; i < nformats; i++, pformats++) {
355 if (i)
356 BIO_puts(out, ":");
357 switch (*pformats) {
358 case TLSEXT_ECPOINTFORMAT_uncompressed:
359 BIO_puts(out, "uncompressed");
360 break;
361
362 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
363 BIO_puts(out, "ansiX962_compressed_prime");
364 break;
365
366 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
367 BIO_puts(out, "ansiX962_compressed_char2");
368 break;
369
370 default:
371 BIO_printf(out, "unknown(%d)", (int)*pformats);
372 break;
373
374 }
375 }
376 BIO_puts(out, "\n");
377 return 1;
378 }
379
ssl_print_groups(BIO * out,SSL * s,int noshared)380 int ssl_print_groups(BIO *out, SSL *s, int noshared)
381 {
382 int i, ngroups, *groups, nid;
383
384 ngroups = SSL_get1_groups(s, NULL);
385 if (ngroups <= 0)
386 return 1;
387 groups = app_malloc(ngroups * sizeof(int), "groups to print");
388 SSL_get1_groups(s, groups);
389
390 BIO_puts(out, "Supported groups: ");
391 for (i = 0; i < ngroups; i++) {
392 if (i)
393 BIO_puts(out, ":");
394 nid = groups[i];
395 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
396 }
397 OPENSSL_free(groups);
398 if (noshared) {
399 BIO_puts(out, "\n");
400 return 1;
401 }
402 BIO_puts(out, "\nShared groups: ");
403 ngroups = SSL_get_shared_group(s, -1);
404 for (i = 0; i < ngroups; i++) {
405 if (i)
406 BIO_puts(out, ":");
407 nid = SSL_get_shared_group(s, i);
408 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
409 }
410 if (ngroups == 0)
411 BIO_puts(out, "NONE");
412 BIO_puts(out, "\n");
413 return 1;
414 }
415 #endif
416
ssl_print_tmp_key(BIO * out,SSL * s)417 int ssl_print_tmp_key(BIO *out, SSL *s)
418 {
419 EVP_PKEY *key;
420
421 if (!SSL_get_peer_tmp_key(s, &key)) {
422 if (SSL_version(s) == TLS1_3_VERSION)
423 BIO_printf(out, "Negotiated TLS1.3 group: %s\n",
424 SSL_group_to_name(s, SSL_get_negotiated_group(s)));
425 return 1;
426 }
427
428 BIO_puts(out, "Server Temp Key: ");
429 switch (EVP_PKEY_get_id(key)) {
430 case EVP_PKEY_RSA:
431 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
432 break;
433
434 case EVP_PKEY_DH:
435 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
436 break;
437 #ifndef OPENSSL_NO_EC
438 case EVP_PKEY_EC:
439 {
440 char name[80];
441 size_t name_len;
442
443 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
444 name, sizeof(name), &name_len))
445 strcpy(name, "?");
446 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
447 }
448 break;
449 #endif
450 default:
451 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
452 EVP_PKEY_get_bits(key));
453 }
454 EVP_PKEY_free(key);
455 return 1;
456 }
457
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)458 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
459 int argi, long argl, int ret, size_t *processed)
460 {
461 BIO *out;
462 BIO_MMSG_CB_ARGS *mmsgargs;
463 size_t i;
464
465 out = (BIO *)BIO_get_callback_arg(bio);
466 if (out == NULL)
467 return ret;
468
469 switch (cmd) {
470 case (BIO_CB_READ | BIO_CB_RETURN):
471 if (ret > 0 && processed != NULL) {
472 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
473 (void *)bio, (void *)argp, len, *processed, *processed);
474 BIO_dump(out, argp, (int)*processed);
475 } else {
476 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
477 (void *)bio, (void *)argp, len, ret);
478 }
479 break;
480
481 case (BIO_CB_WRITE | BIO_CB_RETURN):
482 if (ret > 0 && processed != NULL) {
483 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
484 (void *)bio, (void *)argp, len, *processed, *processed);
485 BIO_dump(out, argp, (int)*processed);
486 } else {
487 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
488 (void *)bio, (void *)argp, len, ret);
489 }
490 break;
491
492 case (BIO_CB_RECVMMSG | BIO_CB_RETURN):
493 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
494 if (ret > 0) {
495 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
496 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
497 + (i * mmsgargs->stride));
498
499 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
500 (void *)bio, (void *)msg->data, msg->data_len,
501 msg->data_len, msg->data_len);
502 BIO_dump(out, msg->data, msg->data_len);
503 }
504 } else if (mmsgargs->num_msg > 0) {
505 BIO_MSG *msg = mmsgargs->msg;
506
507 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
508 (void *)bio, (void *)msg->data, msg->data_len, ret);
509 }
510 break;
511
512 case (BIO_CB_SENDMMSG | BIO_CB_RETURN):
513 mmsgargs = (BIO_MMSG_CB_ARGS *)argp;
514 if (ret > 0) {
515 for (i = 0; i < *(mmsgargs->msgs_processed); i++) {
516 BIO_MSG *msg = (BIO_MSG *)((char *)mmsgargs->msg
517 + (i * mmsgargs->stride));
518
519 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
520 (void *)bio, (void *)msg->data, msg->data_len,
521 msg->data_len, msg->data_len);
522 BIO_dump(out, msg->data, msg->data_len);
523 }
524 } else if (mmsgargs->num_msg > 0) {
525 BIO_MSG *msg = mmsgargs->msg;
526
527 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
528 (void *)bio, (void *)msg->data, msg->data_len, ret);
529 }
530 break;
531
532 default:
533 /* do nothing */
534 break;
535 }
536 return ret;
537 }
538
apps_ssl_info_callback(const SSL * s,int where,int ret)539 void apps_ssl_info_callback(const SSL *s, int where, int ret)
540 {
541 const char *str;
542 int w;
543
544 w = where & ~SSL_ST_MASK;
545
546 if (w & SSL_ST_CONNECT)
547 str = "SSL_connect";
548 else if (w & SSL_ST_ACCEPT)
549 str = "SSL_accept";
550 else
551 str = "undefined";
552
553 if (where & SSL_CB_LOOP) {
554 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
555 } else if (where & SSL_CB_ALERT) {
556 str = (where & SSL_CB_READ) ? "read" : "write";
557 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
558 str,
559 SSL_alert_type_string_long(ret),
560 SSL_alert_desc_string_long(ret));
561 } else if (where & SSL_CB_EXIT) {
562 if (ret == 0)
563 BIO_printf(bio_err, "%s:failed in %s\n",
564 str, SSL_state_string_long(s));
565 else if (ret < 0)
566 BIO_printf(bio_err, "%s:error in %s\n",
567 str, SSL_state_string_long(s));
568 }
569 }
570
571 static STRINT_PAIR ssl_versions[] = {
572 {"SSL 3.0", SSL3_VERSION},
573 {"TLS 1.0", TLS1_VERSION},
574 {"TLS 1.1", TLS1_1_VERSION},
575 {"TLS 1.2", TLS1_2_VERSION},
576 {"TLS 1.3", TLS1_3_VERSION},
577 {"DTLS 1.0", DTLS1_VERSION},
578 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
579 {NULL}
580 };
581
582 static STRINT_PAIR alert_types[] = {
583 {" close_notify", 0},
584 {" end_of_early_data", 1},
585 {" unexpected_message", 10},
586 {" bad_record_mac", 20},
587 {" decryption_failed", 21},
588 {" record_overflow", 22},
589 {" decompression_failure", 30},
590 {" handshake_failure", 40},
591 {" bad_certificate", 42},
592 {" unsupported_certificate", 43},
593 {" certificate_revoked", 44},
594 {" certificate_expired", 45},
595 {" certificate_unknown", 46},
596 {" illegal_parameter", 47},
597 {" unknown_ca", 48},
598 {" access_denied", 49},
599 {" decode_error", 50},
600 {" decrypt_error", 51},
601 {" export_restriction", 60},
602 {" protocol_version", 70},
603 {" insufficient_security", 71},
604 {" internal_error", 80},
605 {" inappropriate_fallback", 86},
606 {" user_canceled", 90},
607 {" no_renegotiation", 100},
608 {" missing_extension", 109},
609 {" unsupported_extension", 110},
610 {" certificate_unobtainable", 111},
611 {" unrecognized_name", 112},
612 {" bad_certificate_status_response", 113},
613 {" bad_certificate_hash_value", 114},
614 {" unknown_psk_identity", 115},
615 {" certificate_required", 116},
616 {NULL}
617 };
618
619 static STRINT_PAIR handshakes[] = {
620 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
621 {", ClientHello", SSL3_MT_CLIENT_HELLO},
622 {", ServerHello", SSL3_MT_SERVER_HELLO},
623 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
624 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
625 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
626 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
627 {", Certificate", SSL3_MT_CERTIFICATE},
628 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
629 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
630 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
631 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
632 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
633 {", Finished", SSL3_MT_FINISHED},
634 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
635 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
636 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
637 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
638 {", CompressedCertificate", SSL3_MT_COMPRESSED_CERTIFICATE},
639 #ifndef OPENSSL_NO_NEXTPROTONEG
640 {", NextProto", SSL3_MT_NEXT_PROTO},
641 #endif
642 {", MessageHash", SSL3_MT_MESSAGE_HASH},
643 {NULL}
644 };
645
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)646 void msg_cb(int write_p, int version, int content_type, const void *buf,
647 size_t len, SSL *ssl, void *arg)
648 {
649 BIO *bio = arg;
650 const char *str_write_p = write_p ? ">>>" : "<<<";
651 char tmpbuf[128];
652 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
653 const unsigned char* bp = buf;
654
655 if (version == SSL3_VERSION ||
656 version == TLS1_VERSION ||
657 version == TLS1_1_VERSION ||
658 version == TLS1_2_VERSION ||
659 version == TLS1_3_VERSION ||
660 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
661 str_version = lookup(version, ssl_versions, "???");
662 switch (content_type) {
663 case SSL3_RT_CHANGE_CIPHER_SPEC:
664 /* type 20 */
665 str_content_type = ", ChangeCipherSpec";
666 break;
667 case SSL3_RT_ALERT:
668 /* type 21 */
669 str_content_type = ", Alert";
670 str_details1 = ", ???";
671 if (len == 2) {
672 switch (bp[0]) {
673 case 1:
674 str_details1 = ", warning";
675 break;
676 case 2:
677 str_details1 = ", fatal";
678 break;
679 }
680 str_details2 = lookup((int)bp[1], alert_types, " ???");
681 }
682 break;
683 case SSL3_RT_HANDSHAKE:
684 /* type 22 */
685 str_content_type = ", Handshake";
686 str_details1 = "???";
687 if (len > 0)
688 str_details1 = lookup((int)bp[0], handshakes, "???");
689 break;
690 case SSL3_RT_APPLICATION_DATA:
691 /* type 23 */
692 str_content_type = ", ApplicationData";
693 break;
694 case SSL3_RT_HEADER:
695 /* type 256 */
696 str_content_type = ", RecordHeader";
697 break;
698 case SSL3_RT_INNER_CONTENT_TYPE:
699 /* type 257 */
700 str_content_type = ", InnerContent";
701 break;
702 default:
703 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
704 str_content_type = tmpbuf;
705 }
706 } else {
707 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
708 str_version = tmpbuf;
709 }
710
711 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
712 str_content_type, (unsigned long)len, str_details1,
713 str_details2);
714
715 if (len > 0) {
716 size_t num, i;
717
718 BIO_printf(bio, " ");
719 num = len;
720 for (i = 0; i < num; i++) {
721 if (i % 16 == 0 && i > 0)
722 BIO_printf(bio, "\n ");
723 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
724 }
725 if (i < len)
726 BIO_printf(bio, " ...");
727 BIO_printf(bio, "\n");
728 }
729 (void)BIO_flush(bio);
730 }
731
732 static const STRINT_PAIR tlsext_types[] = {
733 {"server name", TLSEXT_TYPE_server_name},
734 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
735 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
736 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
737 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
738 {"status request", TLSEXT_TYPE_status_request},
739 {"user mapping", TLSEXT_TYPE_user_mapping},
740 {"client authz", TLSEXT_TYPE_client_authz},
741 {"server authz", TLSEXT_TYPE_server_authz},
742 {"cert type", TLSEXT_TYPE_cert_type},
743 {"supported_groups", TLSEXT_TYPE_supported_groups},
744 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
745 {"SRP", TLSEXT_TYPE_srp},
746 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
747 {"use SRTP", TLSEXT_TYPE_use_srtp},
748 {"session ticket", TLSEXT_TYPE_session_ticket},
749 {"renegotiation info", TLSEXT_TYPE_renegotiate},
750 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
751 {"client cert type", TLSEXT_TYPE_client_cert_type},
752 {"server cert type", TLSEXT_TYPE_server_cert_type},
753 {"TLS padding", TLSEXT_TYPE_padding},
754 #ifdef TLSEXT_TYPE_next_proto_neg
755 {"next protocol", TLSEXT_TYPE_next_proto_neg},
756 #endif
757 #ifdef TLSEXT_TYPE_encrypt_then_mac
758 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
759 #endif
760 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
761 {"application layer protocol negotiation",
762 TLSEXT_TYPE_application_layer_protocol_negotiation},
763 #endif
764 #ifdef TLSEXT_TYPE_extended_master_secret
765 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
766 #endif
767 {"compress certificate", TLSEXT_TYPE_compress_certificate},
768 {"key share", TLSEXT_TYPE_key_share},
769 {"supported versions", TLSEXT_TYPE_supported_versions},
770 {"psk", TLSEXT_TYPE_psk},
771 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
772 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
773 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
774 {"early_data", TLSEXT_TYPE_early_data},
775 {NULL}
776 };
777
778 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
779 static STRINT_PAIR signature_tls13_scheme_list[] = {
780 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
781 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
782 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
783 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
784 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
785 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
786 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
787 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
788 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
789 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
790 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
791 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
792 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
793 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
794 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
795 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
796 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
797 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
798 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
799 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
800 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
801 {NULL}
802 };
803
804 /* from rfc5246 7.4.1.4.1. */
805 static STRINT_PAIR signature_tls12_alg_list[] = {
806 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
807 {"RSA", TLSEXT_signature_rsa /* 1 */},
808 {"DSA", TLSEXT_signature_dsa /* 2 */},
809 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
810 {NULL}
811 };
812
813 /* from rfc5246 7.4.1.4.1. */
814 static STRINT_PAIR signature_tls12_hash_list[] = {
815 {"none", TLSEXT_hash_none /* 0 */},
816 {"MD5", TLSEXT_hash_md5 /* 1 */},
817 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
818 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
819 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
820 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
821 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
822 {NULL}
823 };
824
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)825 void tlsext_cb(SSL *s, int client_server, int type,
826 const unsigned char *data, int len, void *arg)
827 {
828 BIO *bio = arg;
829 const char *extname = lookup(type, tlsext_types, "unknown");
830
831 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
832 client_server ? "server" : "client", extname, type, len);
833 BIO_dump(bio, (const char *)data, len);
834 (void)BIO_flush(bio);
835 }
836
837 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)838 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
839 size_t *cookie_len)
840 {
841 unsigned char *buffer = NULL;
842 size_t length = 0;
843 unsigned short port;
844 BIO_ADDR *lpeer = NULL, *peer = NULL;
845 int res = 0;
846
847 /* Initialize a random secret */
848 if (!cookie_initialized) {
849 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
850 BIO_printf(bio_err, "error setting random cookie secret\n");
851 return 0;
852 }
853 cookie_initialized = 1;
854 }
855
856 if (SSL_is_dtls(ssl)) {
857 lpeer = peer = BIO_ADDR_new();
858 if (peer == NULL) {
859 BIO_printf(bio_err, "memory full\n");
860 return 0;
861 }
862
863 /* Read peer information */
864 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
865 } else {
866 peer = ourpeer;
867 }
868
869 /* Create buffer with peer's address and port */
870 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
871 BIO_printf(bio_err, "Failed getting peer address\n");
872 BIO_ADDR_free(lpeer);
873 return 0;
874 }
875 OPENSSL_assert(length != 0);
876 port = BIO_ADDR_rawport(peer);
877 length += sizeof(port);
878 buffer = app_malloc(length, "cookie generate buffer");
879
880 memcpy(buffer, &port, sizeof(port));
881 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
882
883 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
884 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
885 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
886 BIO_printf(bio_err,
887 "Error calculating HMAC-SHA1 of buffer with secret\n");
888 goto end;
889 }
890 res = 1;
891 end:
892 OPENSSL_free(buffer);
893 BIO_ADDR_free(lpeer);
894
895 return res;
896 }
897
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)898 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
899 size_t cookie_len)
900 {
901 unsigned char result[EVP_MAX_MD_SIZE];
902 size_t resultlength;
903
904 /* Note: we check cookie_initialized because if it's not,
905 * it cannot be valid */
906 if (cookie_initialized
907 && generate_stateless_cookie_callback(ssl, result, &resultlength)
908 && cookie_len == resultlength
909 && memcmp(result, cookie, resultlength) == 0)
910 return 1;
911
912 return 0;
913 }
914
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)915 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
916 unsigned int *cookie_len)
917 {
918 size_t temp = 0;
919 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
920
921 if (res != 0)
922 *cookie_len = (unsigned int)temp;
923 return res;
924 }
925
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)926 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
927 unsigned int cookie_len)
928 {
929 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
930 }
931
932 #endif
933
934 /*
935 * Example of extended certificate handling. Where the standard support of
936 * one certificate per algorithm is not sufficient an application can decide
937 * which certificate(s) to use at runtime based on whatever criteria it deems
938 * appropriate.
939 */
940
941 /* Linked list of certificates, keys and chains */
942 struct ssl_excert_st {
943 int certform;
944 const char *certfile;
945 int keyform;
946 const char *keyfile;
947 const char *chainfile;
948 X509 *cert;
949 EVP_PKEY *key;
950 STACK_OF(X509) *chain;
951 int build_chain;
952 struct ssl_excert_st *next, *prev;
953 };
954
955 static STRINT_PAIR chain_flags[] = {
956 {"Overall Validity", CERT_PKEY_VALID},
957 {"Sign with EE key", CERT_PKEY_SIGN},
958 {"EE signature", CERT_PKEY_EE_SIGNATURE},
959 {"CA signature", CERT_PKEY_CA_SIGNATURE},
960 {"EE key parameters", CERT_PKEY_EE_PARAM},
961 {"CA key parameters", CERT_PKEY_CA_PARAM},
962 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
963 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
964 {"Certificate Type", CERT_PKEY_CERT_TYPE},
965 {NULL}
966 };
967
print_chain_flags(SSL * s,int flags)968 static void print_chain_flags(SSL *s, int flags)
969 {
970 STRINT_PAIR *pp;
971
972 for (pp = chain_flags; pp->name; ++pp)
973 BIO_printf(bio_err, "\t%s: %s\n",
974 pp->name,
975 (flags & pp->retval) ? "OK" : "NOT OK");
976 BIO_printf(bio_err, "\tSuite B: ");
977 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
978 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
979 else
980 BIO_printf(bio_err, "not tested\n");
981 }
982
983 /*
984 * Very basic selection callback: just use any certificate chain reported as
985 * valid. More sophisticated could prioritise according to local policy.
986 */
set_cert_cb(SSL * ssl,void * arg)987 static int set_cert_cb(SSL *ssl, void *arg)
988 {
989 int i, rv;
990 SSL_EXCERT *exc = arg;
991 #ifdef CERT_CB_TEST_RETRY
992 static int retry_cnt;
993
994 if (retry_cnt < 5) {
995 retry_cnt++;
996 BIO_printf(bio_err,
997 "Certificate callback retry test: count %d\n",
998 retry_cnt);
999 return -1;
1000 }
1001 #endif
1002 SSL_certs_clear(ssl);
1003
1004 if (exc == NULL)
1005 return 1;
1006
1007 /*
1008 * Go to end of list and traverse backwards since we prepend newer
1009 * entries this retains the original order.
1010 */
1011 while (exc->next != NULL)
1012 exc = exc->next;
1013
1014 i = 0;
1015
1016 while (exc != NULL) {
1017 i++;
1018 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1019 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1020 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1021 get_nameopt());
1022 BIO_puts(bio_err, "\n");
1023 print_chain_flags(ssl, rv);
1024 if (rv & CERT_PKEY_VALID) {
1025 if (!SSL_use_certificate(ssl, exc->cert)
1026 || !SSL_use_PrivateKey(ssl, exc->key)) {
1027 return 0;
1028 }
1029 /*
1030 * NB: we wouldn't normally do this as it is not efficient
1031 * building chains on each connection better to cache the chain
1032 * in advance.
1033 */
1034 if (exc->build_chain) {
1035 if (!SSL_build_cert_chain(ssl, 0))
1036 return 0;
1037 } else if (exc->chain != NULL) {
1038 if (!SSL_set1_chain(ssl, exc->chain))
1039 return 0;
1040 }
1041 }
1042 exc = exc->prev;
1043 }
1044 return 1;
1045 }
1046
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)1047 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1048 {
1049 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1050 }
1051
ssl_excert_prepend(SSL_EXCERT ** pexc)1052 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1053 {
1054 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
1055
1056 memset(exc, 0, sizeof(*exc));
1057
1058 exc->next = *pexc;
1059 *pexc = exc;
1060
1061 if (exc->next) {
1062 exc->certform = exc->next->certform;
1063 exc->keyform = exc->next->keyform;
1064 exc->next->prev = exc;
1065 } else {
1066 exc->certform = FORMAT_PEM;
1067 exc->keyform = FORMAT_PEM;
1068 }
1069 return 1;
1070
1071 }
1072
ssl_excert_free(SSL_EXCERT * exc)1073 void ssl_excert_free(SSL_EXCERT *exc)
1074 {
1075 SSL_EXCERT *curr;
1076
1077 if (exc == NULL)
1078 return;
1079 while (exc) {
1080 X509_free(exc->cert);
1081 EVP_PKEY_free(exc->key);
1082 OSSL_STACK_OF_X509_free(exc->chain);
1083 curr = exc;
1084 exc = exc->next;
1085 OPENSSL_free(curr);
1086 }
1087 }
1088
load_excert(SSL_EXCERT ** pexc)1089 int load_excert(SSL_EXCERT **pexc)
1090 {
1091 SSL_EXCERT *exc = *pexc;
1092
1093 if (exc == NULL)
1094 return 1;
1095 /* If nothing in list, free and set to NULL */
1096 if (exc->certfile == NULL && exc->next == NULL) {
1097 ssl_excert_free(exc);
1098 *pexc = NULL;
1099 return 1;
1100 }
1101 for (; exc; exc = exc->next) {
1102 if (exc->certfile == NULL) {
1103 BIO_printf(bio_err, "Missing filename\n");
1104 return 0;
1105 }
1106 exc->cert = load_cert(exc->certfile, exc->certform,
1107 "Server Certificate");
1108 if (exc->cert == NULL)
1109 return 0;
1110 if (exc->keyfile != NULL) {
1111 exc->key = load_key(exc->keyfile, exc->keyform,
1112 0, NULL, NULL, "server key");
1113 } else {
1114 exc->key = load_key(exc->certfile, exc->certform,
1115 0, NULL, NULL, "server key");
1116 }
1117 if (exc->key == NULL)
1118 return 0;
1119 if (exc->chainfile != NULL) {
1120 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1121 return 0;
1122 }
1123 }
1124 return 1;
1125 }
1126
1127 enum range { OPT_X_ENUM };
1128
args_excert(int opt,SSL_EXCERT ** pexc)1129 int args_excert(int opt, SSL_EXCERT **pexc)
1130 {
1131 SSL_EXCERT *exc = *pexc;
1132
1133 assert(opt > OPT_X__FIRST);
1134 assert(opt < OPT_X__LAST);
1135
1136 if (exc == NULL) {
1137 if (!ssl_excert_prepend(&exc)) {
1138 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1139 opt_getprog());
1140 goto err;
1141 }
1142 *pexc = exc;
1143 }
1144
1145 switch ((enum range)opt) {
1146 case OPT_X__FIRST:
1147 case OPT_X__LAST:
1148 return 0;
1149 case OPT_X_CERT:
1150 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1151 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1152 goto err;
1153 }
1154 *pexc = exc;
1155 exc->certfile = opt_arg();
1156 break;
1157 case OPT_X_KEY:
1158 if (exc->keyfile != NULL) {
1159 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1160 goto err;
1161 }
1162 exc->keyfile = opt_arg();
1163 break;
1164 case OPT_X_CHAIN:
1165 if (exc->chainfile != NULL) {
1166 BIO_printf(bio_err, "%s: Chain already specified\n",
1167 opt_getprog());
1168 goto err;
1169 }
1170 exc->chainfile = opt_arg();
1171 break;
1172 case OPT_X_CHAIN_BUILD:
1173 exc->build_chain = 1;
1174 break;
1175 case OPT_X_CERTFORM:
1176 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1177 return 0;
1178 break;
1179 case OPT_X_KEYFORM:
1180 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1181 return 0;
1182 break;
1183 }
1184 return 1;
1185
1186 err:
1187 ERR_print_errors(bio_err);
1188 ssl_excert_free(exc);
1189 *pexc = NULL;
1190 return 0;
1191 }
1192
print_raw_cipherlist(SSL * s)1193 static void print_raw_cipherlist(SSL *s)
1194 {
1195 const unsigned char *rlist;
1196 static const unsigned char scsv_id[] = { 0, 0xFF };
1197 size_t i, rlistlen, num;
1198
1199 if (!SSL_is_server(s))
1200 return;
1201 num = SSL_get0_raw_cipherlist(s, NULL);
1202 OPENSSL_assert(num == 2);
1203 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1204 BIO_puts(bio_err, "Client cipher list: ");
1205 for (i = 0; i < rlistlen; i += num, rlist += num) {
1206 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1207 if (i)
1208 BIO_puts(bio_err, ":");
1209 if (c != NULL) {
1210 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1211 } else if (memcmp(rlist, scsv_id, num) == 0) {
1212 BIO_puts(bio_err, "SCSV");
1213 } else {
1214 size_t j;
1215 BIO_puts(bio_err, "0x");
1216 for (j = 0; j < num; j++)
1217 BIO_printf(bio_err, "%02X", rlist[j]);
1218 }
1219 }
1220 BIO_puts(bio_err, "\n");
1221 }
1222
1223 /*
1224 * Hex encoder for TLSA RRdata, not ':' delimited.
1225 */
hexencode(const unsigned char * data,size_t len)1226 static char *hexencode(const unsigned char *data, size_t len)
1227 {
1228 static const char *hex = "0123456789abcdef";
1229 char *out;
1230 char *cp;
1231 size_t outlen = 2 * len + 1;
1232 int ilen = (int) outlen;
1233
1234 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1235 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1236 opt_getprog(), len);
1237 exit(1);
1238 }
1239 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1240
1241 while (len-- > 0) {
1242 *cp++ = hex[(*data >> 4) & 0x0f];
1243 *cp++ = hex[*data++ & 0x0f];
1244 }
1245 *cp = '\0';
1246 return out;
1247 }
1248
print_verify_detail(SSL * s,BIO * bio)1249 void print_verify_detail(SSL *s, BIO *bio)
1250 {
1251 int mdpth;
1252 EVP_PKEY *mspki = NULL;
1253 long verify_err = SSL_get_verify_result(s);
1254
1255 if (verify_err == X509_V_OK) {
1256 const char *peername = SSL_get0_peername(s);
1257
1258 BIO_printf(bio, "Verification: OK\n");
1259 if (peername != NULL)
1260 BIO_printf(bio, "Verified peername: %s\n", peername);
1261 } else {
1262 const char *reason = X509_verify_cert_error_string(verify_err);
1263
1264 BIO_printf(bio, "Verification error: %s\n", reason);
1265 }
1266
1267 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1268 uint8_t usage, selector, mtype;
1269 const unsigned char *data = NULL;
1270 size_t dlen = 0;
1271 char *hexdata;
1272
1273 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1274
1275 /*
1276 * The TLSA data field can be quite long when it is a certificate,
1277 * public key or even a SHA2-512 digest. Because the initial octets of
1278 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1279 * and lengths, we show the last 12 bytes of the data instead, as these
1280 * are more likely to distinguish distinct TLSA records.
1281 */
1282 #define TLSA_TAIL_SIZE 12
1283 if (dlen > TLSA_TAIL_SIZE)
1284 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1285 else
1286 hexdata = hexencode(data, dlen);
1287 BIO_printf(bio, "DANE TLSA %d %d %d %s%s ",
1288 usage, selector, mtype,
1289 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata);
1290 if (SSL_get0_peer_rpk(s) == NULL)
1291 BIO_printf(bio, "%s certificate at depth %d\n",
1292 (mspki != NULL) ? "signed the peer" :
1293 mdpth ? "matched the TA" : "matched the EE", mdpth);
1294 else
1295 BIO_printf(bio, "matched the peer raw public key\n");
1296 OPENSSL_free(hexdata);
1297 }
1298 }
1299
print_ssl_summary(SSL * s)1300 void print_ssl_summary(SSL *s)
1301 {
1302 const SSL_CIPHER *c;
1303 X509 *peer = SSL_get0_peer_certificate(s);
1304 EVP_PKEY *peer_rpk = SSL_get0_peer_rpk(s);
1305 int nid;
1306
1307 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1308 print_raw_cipherlist(s);
1309 c = SSL_get_current_cipher(s);
1310 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1311 do_print_sigalgs(bio_err, s, 0);
1312 if (peer != NULL) {
1313 BIO_puts(bio_err, "Peer certificate: ");
1314 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1315 0, get_nameopt());
1316 BIO_puts(bio_err, "\n");
1317 if (SSL_get_peer_signature_nid(s, &nid))
1318 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1319 if (SSL_get_peer_signature_type_nid(s, &nid))
1320 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1321 print_verify_detail(s, bio_err);
1322 } else if (peer_rpk != NULL) {
1323 BIO_printf(bio_err, "Peer used raw public key\n");
1324 if (SSL_get_peer_signature_type_nid(s, &nid))
1325 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1326 print_verify_detail(s, bio_err);
1327 } else {
1328 BIO_puts(bio_err, "No peer certificate or raw public key\n");
1329 }
1330 #ifndef OPENSSL_NO_EC
1331 ssl_print_point_formats(bio_err, s);
1332 if (SSL_is_server(s))
1333 ssl_print_groups(bio_err, s, 1);
1334 #endif
1335 if (!SSL_is_server(s))
1336 ssl_print_tmp_key(bio_err, s);
1337 }
1338
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1339 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1340 SSL_CTX *ctx)
1341 {
1342 int i;
1343
1344 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1345 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1346 const char *flag = sk_OPENSSL_STRING_value(str, i);
1347 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1348
1349 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1350 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1351 flag, arg == NULL ? "<NULL>" : arg);
1352 ERR_print_errors(bio_err);
1353 return 0;
1354 }
1355 }
1356 if (!SSL_CONF_CTX_finish(cctx)) {
1357 BIO_puts(bio_err, "Error finishing context\n");
1358 ERR_print_errors(bio_err);
1359 return 0;
1360 }
1361 return 1;
1362 }
1363
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1364 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1365 {
1366 X509_CRL *crl;
1367 int i, ret = 1;
1368
1369 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1370 crl = sk_X509_CRL_value(crls, i);
1371 if (!X509_STORE_add_crl(st, crl))
1372 ret = 0;
1373 }
1374 return ret;
1375 }
1376
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1377 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1378 {
1379 X509_STORE *st;
1380
1381 st = SSL_CTX_get_cert_store(ctx);
1382 add_crls_store(st, crls);
1383 if (crl_download)
1384 store_setup_crl_download(st);
1385 return 1;
1386 }
1387
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)1388 int ssl_load_stores(SSL_CTX *ctx,
1389 const char *vfyCApath, const char *vfyCAfile,
1390 const char *vfyCAstore,
1391 const char *chCApath, const char *chCAfile,
1392 const char *chCAstore,
1393 STACK_OF(X509_CRL) *crls, int crl_download)
1394 {
1395 X509_STORE *vfy = NULL, *ch = NULL;
1396 int rv = 0;
1397
1398 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1399 vfy = X509_STORE_new();
1400 if (vfy == NULL)
1401 goto err;
1402 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1403 goto err;
1404 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1405 goto err;
1406 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1407 goto err;
1408 add_crls_store(vfy, crls);
1409 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1410 goto err;
1411 if (crl_download)
1412 store_setup_crl_download(vfy);
1413 }
1414 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1415 ch = X509_STORE_new();
1416 if (ch == NULL)
1417 goto err;
1418 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1419 goto err;
1420 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1421 goto err;
1422 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1423 goto err;
1424 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1425 goto err;
1426 }
1427 rv = 1;
1428 err:
1429 X509_STORE_free(vfy);
1430 X509_STORE_free(ch);
1431 return rv;
1432 }
1433
1434 /* Verbose print out of security callback */
1435
1436 typedef struct {
1437 BIO *out;
1438 int verbose;
1439 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1440 void *other, void *ex);
1441 } security_debug_ex;
1442
1443 static STRINT_PAIR callback_types[] = {
1444 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1445 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1446 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1447 #ifndef OPENSSL_NO_DH
1448 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1449 #endif
1450 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1451 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1452 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1453 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1454 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1455 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1456 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1457 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1458 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1459 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1460 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1461 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1462 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1463 {"SSL compression", SSL_SECOP_COMPRESSION},
1464 {"Session ticket", SSL_SECOP_TICKET},
1465 {NULL}
1466 };
1467
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1468 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1469 int op, int bits, int nid,
1470 void *other, void *ex)
1471 {
1472 security_debug_ex *sdb = ex;
1473 int rv, show_bits = 1, cert_md = 0;
1474 const char *nm;
1475 int show_nm;
1476
1477 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1478 if (rv == 1 && sdb->verbose < 2)
1479 return 1;
1480 BIO_puts(sdb->out, "Security callback: ");
1481
1482 nm = lookup(op, callback_types, NULL);
1483 show_nm = nm != NULL;
1484 switch (op) {
1485 case SSL_SECOP_TICKET:
1486 case SSL_SECOP_COMPRESSION:
1487 show_bits = 0;
1488 show_nm = 0;
1489 break;
1490 case SSL_SECOP_VERSION:
1491 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1492 show_bits = 0;
1493 show_nm = 0;
1494 break;
1495 case SSL_SECOP_CA_MD:
1496 case SSL_SECOP_PEER_CA_MD:
1497 cert_md = 1;
1498 break;
1499 case SSL_SECOP_SIGALG_SUPPORTED:
1500 case SSL_SECOP_SIGALG_SHARED:
1501 case SSL_SECOP_SIGALG_CHECK:
1502 case SSL_SECOP_SIGALG_MASK:
1503 show_nm = 0;
1504 break;
1505 }
1506 if (show_nm)
1507 BIO_printf(sdb->out, "%s=", nm);
1508
1509 switch (op & SSL_SECOP_OTHER_TYPE) {
1510
1511 case SSL_SECOP_OTHER_CIPHER:
1512 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1513 break;
1514
1515 #ifndef OPENSSL_NO_EC
1516 case SSL_SECOP_OTHER_CURVE:
1517 {
1518 const char *cname;
1519 cname = EC_curve_nid2nist(nid);
1520 if (cname == NULL)
1521 cname = OBJ_nid2sn(nid);
1522 BIO_puts(sdb->out, cname);
1523 }
1524 break;
1525 #endif
1526 case SSL_SECOP_OTHER_CERT:
1527 {
1528 if (cert_md) {
1529 int sig_nid = X509_get_signature_nid(other);
1530
1531 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1532 } else {
1533 EVP_PKEY *pkey = X509_get0_pubkey(other);
1534
1535 if (pkey == NULL) {
1536 BIO_printf(sdb->out, "Public key missing");
1537 } else {
1538 const char *algname = "";
1539
1540 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1541 &algname, EVP_PKEY_get0_asn1(pkey));
1542 BIO_printf(sdb->out, "%s, bits=%d",
1543 algname, EVP_PKEY_get_bits(pkey));
1544 }
1545 }
1546 break;
1547 }
1548 case SSL_SECOP_OTHER_SIGALG:
1549 {
1550 const unsigned char *salg = other;
1551 const char *sname = NULL;
1552 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1553 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1554
1555 if (nm != NULL)
1556 BIO_printf(sdb->out, "%s", nm);
1557 else
1558 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1559
1560 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1561 if (sname != NULL) {
1562 BIO_printf(sdb->out, " scheme=%s", sname);
1563 } else {
1564 int alg_code = salg[1];
1565 int hash_code = salg[0];
1566 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1567 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1568
1569 if (alg_str != NULL && hash_str != NULL)
1570 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1571 else
1572 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1573 }
1574 }
1575
1576 }
1577
1578 if (show_bits)
1579 BIO_printf(sdb->out, ", security bits=%d", bits);
1580 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1581 return rv;
1582 }
1583
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1584 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1585 {
1586 static security_debug_ex sdb;
1587
1588 sdb.out = bio_err;
1589 sdb.verbose = verbose;
1590 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1591 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1592 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1593 }
1594
keylog_callback(const SSL * ssl,const char * line)1595 static void keylog_callback(const SSL *ssl, const char *line)
1596 {
1597 if (bio_keylog == NULL) {
1598 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1599 return;
1600 }
1601
1602 /*
1603 * There might be concurrent writers to the keylog file, so we must ensure
1604 * that the given line is written at once.
1605 */
1606 BIO_printf(bio_keylog, "%s\n", line);
1607 (void)BIO_flush(bio_keylog);
1608 }
1609
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1610 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1611 {
1612 /* Close any open files */
1613 BIO_free_all(bio_keylog);
1614 bio_keylog = NULL;
1615
1616 if (ctx == NULL || keylog_file == NULL) {
1617 /* Keylogging is disabled, OK. */
1618 return 0;
1619 }
1620
1621 /*
1622 * Append rather than write in order to allow concurrent modification.
1623 * Furthermore, this preserves existing keylog files which is useful when
1624 * the tool is run multiple times.
1625 */
1626 bio_keylog = BIO_new_file(keylog_file, "a");
1627 if (bio_keylog == NULL) {
1628 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1629 return 1;
1630 }
1631
1632 /* Write a header for seekable, empty files (this excludes pipes). */
1633 if (BIO_tell(bio_keylog) == 0) {
1634 BIO_puts(bio_keylog,
1635 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1636 (void)BIO_flush(bio_keylog);
1637 }
1638 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1639 return 0;
1640 }
1641
print_ca_names(BIO * bio,SSL * s)1642 void print_ca_names(BIO *bio, SSL *s)
1643 {
1644 const char *cs = SSL_is_server(s) ? "server" : "client";
1645 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1646 int i;
1647
1648 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1649 if (!SSL_is_server(s))
1650 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1651 return;
1652 }
1653
1654 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n", cs);
1655 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1656 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1657 BIO_write(bio, "\n", 1);
1658 }
1659 }
1660
ssl_print_secure_renegotiation_notes(BIO * bio,SSL * s)1661 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s)
1662 {
1663 if (SSL_VERSION_ALLOWS_RENEGOTIATION(s)) {
1664 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
1665 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
1666 } else {
1667 BIO_printf(bio, "This TLS version forbids renegotiation.\n");
1668 }
1669 }
1670
progress_cb(EVP_PKEY_CTX * ctx)1671 int progress_cb(EVP_PKEY_CTX *ctx)
1672 {
1673 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1674 int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1675 static const char symbols[] = ".+*\n";
1676 char c = (p >= 0 && (size_t)p <= sizeof(symbols) - 1) ? symbols[p] : '?';
1677
1678 BIO_write(b, &c, 1);
1679 (void)BIO_flush(b);
1680 return 1;
1681 }
1682
