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 /* callback functions used by s_client, s_server, and s_time */
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h> /* for memcpy() and strcmp() */
14 #include "apps.h"
15 #include <openssl/core_names.h>
16 #include <openssl/params.h>
17 #include <openssl/err.h>
18 #include <openssl/rand.h>
19 #include <openssl/x509.h>
20 #include <openssl/ssl.h>
21 #include <openssl/bn.h>
22 #ifndef OPENSSL_NO_DH
23 # include <openssl/dh.h>
24 #endif
25 #include "s_apps.h"
26
27 #define COOKIE_SECRET_LENGTH 16
28
29 VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 };
30
31 #ifndef OPENSSL_NO_SOCK
32 static unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
33 static int cookie_initialized = 0;
34 #endif
35 static BIO *bio_keylog = NULL;
36
lookup(int val,const STRINT_PAIR * list,const char * def)37 static const char *lookup(int val, const STRINT_PAIR* list, const char* def)
38 {
39 for ( ; list->name; ++list)
40 if (list->retval == val)
41 return list->name;
42 return def;
43 }
44
verify_callback(int ok,X509_STORE_CTX * ctx)45 int verify_callback(int ok, X509_STORE_CTX *ctx)
46 {
47 X509 *err_cert;
48 int err, depth;
49
50 err_cert = X509_STORE_CTX_get_current_cert(ctx);
51 err = X509_STORE_CTX_get_error(ctx);
52 depth = X509_STORE_CTX_get_error_depth(ctx);
53
54 if (!verify_args.quiet || !ok) {
55 BIO_printf(bio_err, "depth=%d ", depth);
56 if (err_cert != NULL) {
57 X509_NAME_print_ex(bio_err,
58 X509_get_subject_name(err_cert),
59 0, get_nameopt());
60 BIO_puts(bio_err, "\n");
61 } else {
62 BIO_puts(bio_err, "<no cert>\n");
63 }
64 }
65 if (!ok) {
66 BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
67 X509_verify_cert_error_string(err));
68 if (verify_args.depth < 0 || verify_args.depth >= depth) {
69 if (!verify_args.return_error)
70 ok = 1;
71 verify_args.error = err;
72 } else {
73 ok = 0;
74 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
75 }
76 }
77 switch (err) {
78 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
79 if (err_cert != NULL) {
80 BIO_puts(bio_err, "issuer= ");
81 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
82 0, get_nameopt());
83 BIO_puts(bio_err, "\n");
84 }
85 break;
86 case X509_V_ERR_CERT_NOT_YET_VALID:
87 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
88 if (err_cert != NULL) {
89 BIO_printf(bio_err, "notBefore=");
90 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert));
91 BIO_printf(bio_err, "\n");
92 }
93 break;
94 case X509_V_ERR_CERT_HAS_EXPIRED:
95 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
96 if (err_cert != NULL) {
97 BIO_printf(bio_err, "notAfter=");
98 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert));
99 BIO_printf(bio_err, "\n");
100 }
101 break;
102 case X509_V_ERR_NO_EXPLICIT_POLICY:
103 if (!verify_args.quiet)
104 policies_print(ctx);
105 break;
106 }
107 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
108 policies_print(ctx);
109 if (ok && !verify_args.quiet)
110 BIO_printf(bio_err, "verify return:%d\n", ok);
111 return ok;
112 }
113
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)114 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
115 {
116 if (cert_file != NULL) {
117 if (SSL_CTX_use_certificate_file(ctx, cert_file,
118 SSL_FILETYPE_PEM) <= 0) {
119 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
120 cert_file);
121 ERR_print_errors(bio_err);
122 return 0;
123 }
124 if (key_file == NULL)
125 key_file = cert_file;
126 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
127 BIO_printf(bio_err, "unable to get private key from '%s'\n",
128 key_file);
129 ERR_print_errors(bio_err);
130 return 0;
131 }
132
133 /*
134 * If we are using DSA, we can copy the parameters from the private
135 * key
136 */
137
138 /*
139 * Now we know that a key and cert have been set against the SSL
140 * context
141 */
142 if (!SSL_CTX_check_private_key(ctx)) {
143 BIO_printf(bio_err,
144 "Private key does not match the certificate public key\n");
145 return 0;
146 }
147 }
148 return 1;
149 }
150
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)151 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
152 STACK_OF(X509) *chain, int build_chain)
153 {
154 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
155
156 if (cert == NULL)
157 return 1;
158 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
159 BIO_printf(bio_err, "error setting certificate\n");
160 ERR_print_errors(bio_err);
161 return 0;
162 }
163
164 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
165 BIO_printf(bio_err, "error setting private key\n");
166 ERR_print_errors(bio_err);
167 return 0;
168 }
169
170 /*
171 * Now we know that a key and cert have been set against the SSL context
172 */
173 if (!SSL_CTX_check_private_key(ctx)) {
174 BIO_printf(bio_err,
175 "Private key does not match the certificate public key\n");
176 return 0;
177 }
178 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
179 BIO_printf(bio_err, "error setting certificate chain\n");
180 ERR_print_errors(bio_err);
181 return 0;
182 }
183 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
184 BIO_printf(bio_err, "error building certificate chain\n");
185 ERR_print_errors(bio_err);
186 return 0;
187 }
188 return 1;
189 }
190
191 static STRINT_PAIR cert_type_list[] = {
192 {"RSA sign", TLS_CT_RSA_SIGN},
193 {"DSA sign", TLS_CT_DSS_SIGN},
194 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
195 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
196 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
197 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
198 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
199 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
200 {"GOST12 Sign", TLS_CT_GOST12_IANA_SIGN},
201 {NULL}
202 };
203
ssl_print_client_cert_types(BIO * bio,SSL * s)204 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
205 {
206 const unsigned char *p;
207 int i;
208 int cert_type_num = SSL_get0_certificate_types(s, &p);
209
210 if (!cert_type_num)
211 return;
212 BIO_puts(bio, "Client Certificate Types: ");
213 for (i = 0; i < cert_type_num; i++) {
214 unsigned char cert_type = p[i];
215 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
216
217 if (i)
218 BIO_puts(bio, ", ");
219 if (cname != NULL)
220 BIO_puts(bio, cname);
221 else
222 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
223 }
224 BIO_puts(bio, "\n");
225 }
226
get_sigtype(int nid)227 static const char *get_sigtype(int nid)
228 {
229 switch (nid) {
230 case EVP_PKEY_RSA:
231 return "RSA";
232
233 case EVP_PKEY_RSA_PSS:
234 return "RSA-PSS";
235
236 case EVP_PKEY_DSA:
237 return "DSA";
238
239 case EVP_PKEY_EC:
240 return "ECDSA";
241
242 case NID_ED25519:
243 return "Ed25519";
244
245 case NID_ED448:
246 return "Ed448";
247
248 case NID_id_GostR3410_2001:
249 return "gost2001";
250
251 case NID_id_GostR3410_2012_256:
252 return "gost2012_256";
253
254 case NID_id_GostR3410_2012_512:
255 return "gost2012_512";
256
257 default:
258 return NULL;
259 }
260 }
261
do_print_sigalgs(BIO * out,SSL * s,int shared)262 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
263 {
264 int i, nsig, client;
265
266 client = SSL_is_server(s) ? 0 : 1;
267 if (shared)
268 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
269 else
270 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
271 if (nsig == 0)
272 return 1;
273
274 if (shared)
275 BIO_puts(out, "Shared ");
276
277 if (client)
278 BIO_puts(out, "Requested ");
279 BIO_puts(out, "Signature Algorithms: ");
280 for (i = 0; i < nsig; i++) {
281 int hash_nid, sign_nid;
282 unsigned char rhash, rsign;
283 const char *sstr = NULL;
284 if (shared)
285 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
286 &rsign, &rhash);
287 else
288 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
289 if (i)
290 BIO_puts(out, ":");
291 sstr = get_sigtype(sign_nid);
292 if (sstr)
293 BIO_printf(out, "%s", sstr);
294 else
295 BIO_printf(out, "0x%02X", (int)rsign);
296 if (hash_nid != NID_undef)
297 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
298 else if (sstr == NULL)
299 BIO_printf(out, "+0x%02X", (int)rhash);
300 }
301 BIO_puts(out, "\n");
302 return 1;
303 }
304
ssl_print_sigalgs(BIO * out,SSL * s)305 int ssl_print_sigalgs(BIO *out, SSL *s)
306 {
307 int nid;
308
309 if (!SSL_is_server(s))
310 ssl_print_client_cert_types(out, s);
311 do_print_sigalgs(out, s, 0);
312 do_print_sigalgs(out, s, 1);
313 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
314 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
315 if (SSL_get_peer_signature_type_nid(s, &nid))
316 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
317 return 1;
318 }
319
320 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)321 int ssl_print_point_formats(BIO *out, SSL *s)
322 {
323 int i, nformats;
324 const char *pformats;
325
326 nformats = SSL_get0_ec_point_formats(s, &pformats);
327 if (nformats <= 0)
328 return 1;
329 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
330 for (i = 0; i < nformats; i++, pformats++) {
331 if (i)
332 BIO_puts(out, ":");
333 switch (*pformats) {
334 case TLSEXT_ECPOINTFORMAT_uncompressed:
335 BIO_puts(out, "uncompressed");
336 break;
337
338 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
339 BIO_puts(out, "ansiX962_compressed_prime");
340 break;
341
342 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
343 BIO_puts(out, "ansiX962_compressed_char2");
344 break;
345
346 default:
347 BIO_printf(out, "unknown(%d)", (int)*pformats);
348 break;
349
350 }
351 }
352 BIO_puts(out, "\n");
353 return 1;
354 }
355
ssl_print_groups(BIO * out,SSL * s,int noshared)356 int ssl_print_groups(BIO *out, SSL *s, int noshared)
357 {
358 int i, ngroups, *groups, nid;
359
360 ngroups = SSL_get1_groups(s, NULL);
361 if (ngroups <= 0)
362 return 1;
363 groups = app_malloc(ngroups * sizeof(int), "groups to print");
364 SSL_get1_groups(s, groups);
365
366 BIO_puts(out, "Supported groups: ");
367 for (i = 0; i < ngroups; i++) {
368 if (i)
369 BIO_puts(out, ":");
370 nid = groups[i];
371 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
372 }
373 OPENSSL_free(groups);
374 if (noshared) {
375 BIO_puts(out, "\n");
376 return 1;
377 }
378 BIO_puts(out, "\nShared groups: ");
379 ngroups = SSL_get_shared_group(s, -1);
380 for (i = 0; i < ngroups; i++) {
381 if (i)
382 BIO_puts(out, ":");
383 nid = SSL_get_shared_group(s, i);
384 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
385 }
386 if (ngroups == 0)
387 BIO_puts(out, "NONE");
388 BIO_puts(out, "\n");
389 return 1;
390 }
391 #endif
392
ssl_print_tmp_key(BIO * out,SSL * s)393 int ssl_print_tmp_key(BIO *out, SSL *s)
394 {
395 EVP_PKEY *key;
396
397 if (!SSL_get_peer_tmp_key(s, &key))
398 return 1;
399 BIO_puts(out, "Server Temp Key: ");
400 switch (EVP_PKEY_get_id(key)) {
401 case EVP_PKEY_RSA:
402 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
403 break;
404
405 case EVP_PKEY_DH:
406 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
407 break;
408 #ifndef OPENSSL_NO_EC
409 case EVP_PKEY_EC:
410 {
411 char name[80];
412 size_t name_len;
413
414 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
415 name, sizeof(name), &name_len))
416 strcpy(name, "?");
417 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
418 }
419 break;
420 #endif
421 default:
422 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
423 EVP_PKEY_get_bits(key));
424 }
425 EVP_PKEY_free(key);
426 return 1;
427 }
428
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)429 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
430 int argi, long argl, int ret, size_t *processed)
431 {
432 BIO *out;
433
434 out = (BIO *)BIO_get_callback_arg(bio);
435 if (out == NULL)
436 return ret;
437
438 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
439 if (ret > 0 && processed != NULL) {
440 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
441 (void *)bio, (void *)argp, len, *processed, *processed);
442 BIO_dump(out, argp, (int)*processed);
443 } else {
444 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
445 (void *)bio, (void *)argp, len, ret);
446 }
447 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
448 if (ret > 0 && processed != NULL) {
449 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
450 (void *)bio, (void *)argp, len, *processed, *processed);
451 BIO_dump(out, argp, (int)*processed);
452 } else {
453 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
454 (void *)bio, (void *)argp, len, ret);
455 }
456 }
457 return ret;
458 }
459
apps_ssl_info_callback(const SSL * s,int where,int ret)460 void apps_ssl_info_callback(const SSL *s, int where, int ret)
461 {
462 const char *str;
463 int w;
464
465 w = where & ~SSL_ST_MASK;
466
467 if (w & SSL_ST_CONNECT)
468 str = "SSL_connect";
469 else if (w & SSL_ST_ACCEPT)
470 str = "SSL_accept";
471 else
472 str = "undefined";
473
474 if (where & SSL_CB_LOOP) {
475 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
476 } else if (where & SSL_CB_ALERT) {
477 str = (where & SSL_CB_READ) ? "read" : "write";
478 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
479 str,
480 SSL_alert_type_string_long(ret),
481 SSL_alert_desc_string_long(ret));
482 } else if (where & SSL_CB_EXIT) {
483 if (ret == 0)
484 BIO_printf(bio_err, "%s:failed in %s\n",
485 str, SSL_state_string_long(s));
486 else if (ret < 0)
487 BIO_printf(bio_err, "%s:error in %s\n",
488 str, SSL_state_string_long(s));
489 }
490 }
491
492 static STRINT_PAIR ssl_versions[] = {
493 {"SSL 3.0", SSL3_VERSION},
494 {"TLS 1.0", TLS1_VERSION},
495 {"TLS 1.1", TLS1_1_VERSION},
496 {"TLS 1.2", TLS1_2_VERSION},
497 {"TLS 1.3", TLS1_3_VERSION},
498 {"DTLS 1.0", DTLS1_VERSION},
499 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
500 {NULL}
501 };
502
503 static STRINT_PAIR alert_types[] = {
504 {" close_notify", 0},
505 {" end_of_early_data", 1},
506 {" unexpected_message", 10},
507 {" bad_record_mac", 20},
508 {" decryption_failed", 21},
509 {" record_overflow", 22},
510 {" decompression_failure", 30},
511 {" handshake_failure", 40},
512 {" bad_certificate", 42},
513 {" unsupported_certificate", 43},
514 {" certificate_revoked", 44},
515 {" certificate_expired", 45},
516 {" certificate_unknown", 46},
517 {" illegal_parameter", 47},
518 {" unknown_ca", 48},
519 {" access_denied", 49},
520 {" decode_error", 50},
521 {" decrypt_error", 51},
522 {" export_restriction", 60},
523 {" protocol_version", 70},
524 {" insufficient_security", 71},
525 {" internal_error", 80},
526 {" inappropriate_fallback", 86},
527 {" user_canceled", 90},
528 {" no_renegotiation", 100},
529 {" missing_extension", 109},
530 {" unsupported_extension", 110},
531 {" certificate_unobtainable", 111},
532 {" unrecognized_name", 112},
533 {" bad_certificate_status_response", 113},
534 {" bad_certificate_hash_value", 114},
535 {" unknown_psk_identity", 115},
536 {" certificate_required", 116},
537 {NULL}
538 };
539
540 static STRINT_PAIR handshakes[] = {
541 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
542 {", ClientHello", SSL3_MT_CLIENT_HELLO},
543 {", ServerHello", SSL3_MT_SERVER_HELLO},
544 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
545 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
546 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
547 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
548 {", Certificate", SSL3_MT_CERTIFICATE},
549 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
550 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
551 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
552 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
553 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
554 {", Finished", SSL3_MT_FINISHED},
555 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
556 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
557 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
558 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
559 #ifndef OPENSSL_NO_NEXTPROTONEG
560 {", NextProto", SSL3_MT_NEXT_PROTO},
561 #endif
562 {", MessageHash", SSL3_MT_MESSAGE_HASH},
563 {NULL}
564 };
565
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)566 void msg_cb(int write_p, int version, int content_type, const void *buf,
567 size_t len, SSL *ssl, void *arg)
568 {
569 BIO *bio = arg;
570 const char *str_write_p = write_p ? ">>>" : "<<<";
571 char tmpbuf[128];
572 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
573 const unsigned char* bp = buf;
574
575 if (version == SSL3_VERSION ||
576 version == TLS1_VERSION ||
577 version == TLS1_1_VERSION ||
578 version == TLS1_2_VERSION ||
579 version == TLS1_3_VERSION ||
580 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
581 str_version = lookup(version, ssl_versions, "???");
582 switch (content_type) {
583 case SSL3_RT_CHANGE_CIPHER_SPEC:
584 /* type 20 */
585 str_content_type = ", ChangeCipherSpec";
586 break;
587 case SSL3_RT_ALERT:
588 /* type 21 */
589 str_content_type = ", Alert";
590 str_details1 = ", ???";
591 if (len == 2) {
592 switch (bp[0]) {
593 case 1:
594 str_details1 = ", warning";
595 break;
596 case 2:
597 str_details1 = ", fatal";
598 break;
599 }
600 str_details2 = lookup((int)bp[1], alert_types, " ???");
601 }
602 break;
603 case SSL3_RT_HANDSHAKE:
604 /* type 22 */
605 str_content_type = ", Handshake";
606 str_details1 = "???";
607 if (len > 0)
608 str_details1 = lookup((int)bp[0], handshakes, "???");
609 break;
610 case SSL3_RT_APPLICATION_DATA:
611 /* type 23 */
612 str_content_type = ", ApplicationData";
613 break;
614 case SSL3_RT_HEADER:
615 /* type 256 */
616 str_content_type = ", RecordHeader";
617 break;
618 case SSL3_RT_INNER_CONTENT_TYPE:
619 /* type 257 */
620 str_content_type = ", InnerContent";
621 break;
622 default:
623 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
624 str_content_type = tmpbuf;
625 }
626 } else {
627 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
628 str_version = tmpbuf;
629 }
630
631 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
632 str_content_type, (unsigned long)len, str_details1,
633 str_details2);
634
635 if (len > 0) {
636 size_t num, i;
637
638 BIO_printf(bio, " ");
639 num = len;
640 for (i = 0; i < num; i++) {
641 if (i % 16 == 0 && i > 0)
642 BIO_printf(bio, "\n ");
643 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
644 }
645 if (i < len)
646 BIO_printf(bio, " ...");
647 BIO_printf(bio, "\n");
648 }
649 (void)BIO_flush(bio);
650 }
651
652 static const STRINT_PAIR tlsext_types[] = {
653 {"server name", TLSEXT_TYPE_server_name},
654 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
655 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
656 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
657 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
658 {"status request", TLSEXT_TYPE_status_request},
659 {"user mapping", TLSEXT_TYPE_user_mapping},
660 {"client authz", TLSEXT_TYPE_client_authz},
661 {"server authz", TLSEXT_TYPE_server_authz},
662 {"cert type", TLSEXT_TYPE_cert_type},
663 {"supported_groups", TLSEXT_TYPE_supported_groups},
664 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
665 {"SRP", TLSEXT_TYPE_srp},
666 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
667 {"use SRTP", TLSEXT_TYPE_use_srtp},
668 {"session ticket", TLSEXT_TYPE_session_ticket},
669 {"renegotiation info", TLSEXT_TYPE_renegotiate},
670 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
671 {"TLS padding", TLSEXT_TYPE_padding},
672 #ifdef TLSEXT_TYPE_next_proto_neg
673 {"next protocol", TLSEXT_TYPE_next_proto_neg},
674 #endif
675 #ifdef TLSEXT_TYPE_encrypt_then_mac
676 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
677 #endif
678 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
679 {"application layer protocol negotiation",
680 TLSEXT_TYPE_application_layer_protocol_negotiation},
681 #endif
682 #ifdef TLSEXT_TYPE_extended_master_secret
683 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
684 #endif
685 {"key share", TLSEXT_TYPE_key_share},
686 {"supported versions", TLSEXT_TYPE_supported_versions},
687 {"psk", TLSEXT_TYPE_psk},
688 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
689 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
690 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
691 {"early_data", TLSEXT_TYPE_early_data},
692 {NULL}
693 };
694
695 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
696 static STRINT_PAIR signature_tls13_scheme_list[] = {
697 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
698 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
699 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
700 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
701 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
702 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
703 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
704 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
705 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
706 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
707 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
708 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
709 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
710 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
711 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
712 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
713 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
714 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
715 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
716 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
717 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
718 {NULL}
719 };
720
721 /* from rfc5246 7.4.1.4.1. */
722 static STRINT_PAIR signature_tls12_alg_list[] = {
723 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
724 {"RSA", TLSEXT_signature_rsa /* 1 */},
725 {"DSA", TLSEXT_signature_dsa /* 2 */},
726 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
727 {NULL}
728 };
729
730 /* from rfc5246 7.4.1.4.1. */
731 static STRINT_PAIR signature_tls12_hash_list[] = {
732 {"none", TLSEXT_hash_none /* 0 */},
733 {"MD5", TLSEXT_hash_md5 /* 1 */},
734 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
735 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
736 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
737 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
738 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
739 {NULL}
740 };
741
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)742 void tlsext_cb(SSL *s, int client_server, int type,
743 const unsigned char *data, int len, void *arg)
744 {
745 BIO *bio = arg;
746 const char *extname = lookup(type, tlsext_types, "unknown");
747
748 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
749 client_server ? "server" : "client", extname, type, len);
750 BIO_dump(bio, (const char *)data, len);
751 (void)BIO_flush(bio);
752 }
753
754 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)755 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
756 size_t *cookie_len)
757 {
758 unsigned char *buffer = NULL;
759 size_t length = 0;
760 unsigned short port;
761 BIO_ADDR *lpeer = NULL, *peer = NULL;
762 int res = 0;
763
764 /* Initialize a random secret */
765 if (!cookie_initialized) {
766 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
767 BIO_printf(bio_err, "error setting random cookie secret\n");
768 return 0;
769 }
770 cookie_initialized = 1;
771 }
772
773 if (SSL_is_dtls(ssl)) {
774 lpeer = peer = BIO_ADDR_new();
775 if (peer == NULL) {
776 BIO_printf(bio_err, "memory full\n");
777 return 0;
778 }
779
780 /* Read peer information */
781 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
782 } else {
783 peer = ourpeer;
784 }
785
786 /* Create buffer with peer's address and port */
787 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
788 BIO_printf(bio_err, "Failed getting peer address\n");
789 BIO_ADDR_free(lpeer);
790 return 0;
791 }
792 OPENSSL_assert(length != 0);
793 port = BIO_ADDR_rawport(peer);
794 length += sizeof(port);
795 buffer = app_malloc(length, "cookie generate buffer");
796
797 memcpy(buffer, &port, sizeof(port));
798 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
799
800 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
801 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
802 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
803 BIO_printf(bio_err,
804 "Error calculating HMAC-SHA1 of buffer with secret\n");
805 goto end;
806 }
807 res = 1;
808 end:
809 OPENSSL_free(buffer);
810 BIO_ADDR_free(lpeer);
811
812 return res;
813 }
814
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)815 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
816 size_t cookie_len)
817 {
818 unsigned char result[EVP_MAX_MD_SIZE];
819 size_t resultlength;
820
821 /* Note: we check cookie_initialized because if it's not,
822 * it cannot be valid */
823 if (cookie_initialized
824 && generate_stateless_cookie_callback(ssl, result, &resultlength)
825 && cookie_len == resultlength
826 && memcmp(result, cookie, resultlength) == 0)
827 return 1;
828
829 return 0;
830 }
831
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)832 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
833 unsigned int *cookie_len)
834 {
835 size_t temp = 0;
836 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
837
838 if (res != 0)
839 *cookie_len = (unsigned int)temp;
840 return res;
841 }
842
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)843 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
844 unsigned int cookie_len)
845 {
846 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
847 }
848
849 #endif
850
851 /*
852 * Example of extended certificate handling. Where the standard support of
853 * one certificate per algorithm is not sufficient an application can decide
854 * which certificate(s) to use at runtime based on whatever criteria it deems
855 * appropriate.
856 */
857
858 /* Linked list of certificates, keys and chains */
859 struct ssl_excert_st {
860 int certform;
861 const char *certfile;
862 int keyform;
863 const char *keyfile;
864 const char *chainfile;
865 X509 *cert;
866 EVP_PKEY *key;
867 STACK_OF(X509) *chain;
868 int build_chain;
869 struct ssl_excert_st *next, *prev;
870 };
871
872 static STRINT_PAIR chain_flags[] = {
873 {"Overall Validity", CERT_PKEY_VALID},
874 {"Sign with EE key", CERT_PKEY_SIGN},
875 {"EE signature", CERT_PKEY_EE_SIGNATURE},
876 {"CA signature", CERT_PKEY_CA_SIGNATURE},
877 {"EE key parameters", CERT_PKEY_EE_PARAM},
878 {"CA key parameters", CERT_PKEY_CA_PARAM},
879 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
880 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
881 {"Certificate Type", CERT_PKEY_CERT_TYPE},
882 {NULL}
883 };
884
print_chain_flags(SSL * s,int flags)885 static void print_chain_flags(SSL *s, int flags)
886 {
887 STRINT_PAIR *pp;
888
889 for (pp = chain_flags; pp->name; ++pp)
890 BIO_printf(bio_err, "\t%s: %s\n",
891 pp->name,
892 (flags & pp->retval) ? "OK" : "NOT OK");
893 BIO_printf(bio_err, "\tSuite B: ");
894 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
895 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
896 else
897 BIO_printf(bio_err, "not tested\n");
898 }
899
900 /*
901 * Very basic selection callback: just use any certificate chain reported as
902 * valid. More sophisticated could prioritise according to local policy.
903 */
set_cert_cb(SSL * ssl,void * arg)904 static int set_cert_cb(SSL *ssl, void *arg)
905 {
906 int i, rv;
907 SSL_EXCERT *exc = arg;
908 #ifdef CERT_CB_TEST_RETRY
909 static int retry_cnt;
910
911 if (retry_cnt < 5) {
912 retry_cnt++;
913 BIO_printf(bio_err,
914 "Certificate callback retry test: count %d\n",
915 retry_cnt);
916 return -1;
917 }
918 #endif
919 SSL_certs_clear(ssl);
920
921 if (exc == NULL)
922 return 1;
923
924 /*
925 * Go to end of list and traverse backwards since we prepend newer
926 * entries this retains the original order.
927 */
928 while (exc->next != NULL)
929 exc = exc->next;
930
931 i = 0;
932
933 while (exc != NULL) {
934 i++;
935 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
936 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
937 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
938 get_nameopt());
939 BIO_puts(bio_err, "\n");
940 print_chain_flags(ssl, rv);
941 if (rv & CERT_PKEY_VALID) {
942 if (!SSL_use_certificate(ssl, exc->cert)
943 || !SSL_use_PrivateKey(ssl, exc->key)) {
944 return 0;
945 }
946 /*
947 * NB: we wouldn't normally do this as it is not efficient
948 * building chains on each connection better to cache the chain
949 * in advance.
950 */
951 if (exc->build_chain) {
952 if (!SSL_build_cert_chain(ssl, 0))
953 return 0;
954 } else if (exc->chain != NULL) {
955 if (!SSL_set1_chain(ssl, exc->chain))
956 return 0;
957 }
958 }
959 exc = exc->prev;
960 }
961 return 1;
962 }
963
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)964 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
965 {
966 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
967 }
968
ssl_excert_prepend(SSL_EXCERT ** pexc)969 static int ssl_excert_prepend(SSL_EXCERT **pexc)
970 {
971 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
972
973 memset(exc, 0, sizeof(*exc));
974
975 exc->next = *pexc;
976 *pexc = exc;
977
978 if (exc->next) {
979 exc->certform = exc->next->certform;
980 exc->keyform = exc->next->keyform;
981 exc->next->prev = exc;
982 } else {
983 exc->certform = FORMAT_PEM;
984 exc->keyform = FORMAT_PEM;
985 }
986 return 1;
987
988 }
989
ssl_excert_free(SSL_EXCERT * exc)990 void ssl_excert_free(SSL_EXCERT *exc)
991 {
992 SSL_EXCERT *curr;
993
994 if (exc == NULL)
995 return;
996 while (exc) {
997 X509_free(exc->cert);
998 EVP_PKEY_free(exc->key);
999 sk_X509_pop_free(exc->chain, X509_free);
1000 curr = exc;
1001 exc = exc->next;
1002 OPENSSL_free(curr);
1003 }
1004 }
1005
load_excert(SSL_EXCERT ** pexc)1006 int load_excert(SSL_EXCERT **pexc)
1007 {
1008 SSL_EXCERT *exc = *pexc;
1009
1010 if (exc == NULL)
1011 return 1;
1012 /* If nothing in list, free and set to NULL */
1013 if (exc->certfile == NULL && exc->next == NULL) {
1014 ssl_excert_free(exc);
1015 *pexc = NULL;
1016 return 1;
1017 }
1018 for (; exc; exc = exc->next) {
1019 if (exc->certfile == NULL) {
1020 BIO_printf(bio_err, "Missing filename\n");
1021 return 0;
1022 }
1023 exc->cert = load_cert(exc->certfile, exc->certform,
1024 "Server Certificate");
1025 if (exc->cert == NULL)
1026 return 0;
1027 if (exc->keyfile != NULL) {
1028 exc->key = load_key(exc->keyfile, exc->keyform,
1029 0, NULL, NULL, "server key");
1030 } else {
1031 exc->key = load_key(exc->certfile, exc->certform,
1032 0, NULL, NULL, "server key");
1033 }
1034 if (exc->key == NULL)
1035 return 0;
1036 if (exc->chainfile != NULL) {
1037 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1038 return 0;
1039 }
1040 }
1041 return 1;
1042 }
1043
1044 enum range { OPT_X_ENUM };
1045
args_excert(int opt,SSL_EXCERT ** pexc)1046 int args_excert(int opt, SSL_EXCERT **pexc)
1047 {
1048 SSL_EXCERT *exc = *pexc;
1049
1050 assert(opt > OPT_X__FIRST);
1051 assert(opt < OPT_X__LAST);
1052
1053 if (exc == NULL) {
1054 if (!ssl_excert_prepend(&exc)) {
1055 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1056 opt_getprog());
1057 goto err;
1058 }
1059 *pexc = exc;
1060 }
1061
1062 switch ((enum range)opt) {
1063 case OPT_X__FIRST:
1064 case OPT_X__LAST:
1065 return 0;
1066 case OPT_X_CERT:
1067 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1068 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1069 goto err;
1070 }
1071 *pexc = exc;
1072 exc->certfile = opt_arg();
1073 break;
1074 case OPT_X_KEY:
1075 if (exc->keyfile != NULL) {
1076 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1077 goto err;
1078 }
1079 exc->keyfile = opt_arg();
1080 break;
1081 case OPT_X_CHAIN:
1082 if (exc->chainfile != NULL) {
1083 BIO_printf(bio_err, "%s: Chain already specified\n",
1084 opt_getprog());
1085 goto err;
1086 }
1087 exc->chainfile = opt_arg();
1088 break;
1089 case OPT_X_CHAIN_BUILD:
1090 exc->build_chain = 1;
1091 break;
1092 case OPT_X_CERTFORM:
1093 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1094 return 0;
1095 break;
1096 case OPT_X_KEYFORM:
1097 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1098 return 0;
1099 break;
1100 }
1101 return 1;
1102
1103 err:
1104 ERR_print_errors(bio_err);
1105 ssl_excert_free(exc);
1106 *pexc = NULL;
1107 return 0;
1108 }
1109
print_raw_cipherlist(SSL * s)1110 static void print_raw_cipherlist(SSL *s)
1111 {
1112 const unsigned char *rlist;
1113 static const unsigned char scsv_id[] = { 0, 0xFF };
1114 size_t i, rlistlen, num;
1115
1116 if (!SSL_is_server(s))
1117 return;
1118 num = SSL_get0_raw_cipherlist(s, NULL);
1119 OPENSSL_assert(num == 2);
1120 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1121 BIO_puts(bio_err, "Client cipher list: ");
1122 for (i = 0; i < rlistlen; i += num, rlist += num) {
1123 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1124 if (i)
1125 BIO_puts(bio_err, ":");
1126 if (c != NULL) {
1127 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1128 } else if (memcmp(rlist, scsv_id, num) == 0) {
1129 BIO_puts(bio_err, "SCSV");
1130 } else {
1131 size_t j;
1132 BIO_puts(bio_err, "0x");
1133 for (j = 0; j < num; j++)
1134 BIO_printf(bio_err, "%02X", rlist[j]);
1135 }
1136 }
1137 BIO_puts(bio_err, "\n");
1138 }
1139
1140 /*
1141 * Hex encoder for TLSA RRdata, not ':' delimited.
1142 */
hexencode(const unsigned char * data,size_t len)1143 static char *hexencode(const unsigned char *data, size_t len)
1144 {
1145 static const char *hex = "0123456789abcdef";
1146 char *out;
1147 char *cp;
1148 size_t outlen = 2 * len + 1;
1149 int ilen = (int) outlen;
1150
1151 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1152 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1153 opt_getprog(), len);
1154 exit(1);
1155 }
1156 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1157
1158 while (len-- > 0) {
1159 *cp++ = hex[(*data >> 4) & 0x0f];
1160 *cp++ = hex[*data++ & 0x0f];
1161 }
1162 *cp = '\0';
1163 return out;
1164 }
1165
print_verify_detail(SSL * s,BIO * bio)1166 void print_verify_detail(SSL *s, BIO *bio)
1167 {
1168 int mdpth;
1169 EVP_PKEY *mspki;
1170 long verify_err = SSL_get_verify_result(s);
1171
1172 if (verify_err == X509_V_OK) {
1173 const char *peername = SSL_get0_peername(s);
1174
1175 BIO_printf(bio, "Verification: OK\n");
1176 if (peername != NULL)
1177 BIO_printf(bio, "Verified peername: %s\n", peername);
1178 } else {
1179 const char *reason = X509_verify_cert_error_string(verify_err);
1180
1181 BIO_printf(bio, "Verification error: %s\n", reason);
1182 }
1183
1184 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1185 uint8_t usage, selector, mtype;
1186 const unsigned char *data = NULL;
1187 size_t dlen = 0;
1188 char *hexdata;
1189
1190 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1191
1192 /*
1193 * The TLSA data field can be quite long when it is a certificate,
1194 * public key or even a SHA2-512 digest. Because the initial octets of
1195 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1196 * and lengths, we show the last 12 bytes of the data instead, as these
1197 * are more likely to distinguish distinct TLSA records.
1198 */
1199 #define TLSA_TAIL_SIZE 12
1200 if (dlen > TLSA_TAIL_SIZE)
1201 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1202 else
1203 hexdata = hexencode(data, dlen);
1204 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1205 usage, selector, mtype,
1206 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1207 (mspki != NULL) ? "signed the certificate" :
1208 mdpth ? "matched TA certificate" : "matched EE certificate",
1209 mdpth);
1210 OPENSSL_free(hexdata);
1211 }
1212 }
1213
print_ssl_summary(SSL * s)1214 void print_ssl_summary(SSL *s)
1215 {
1216 const SSL_CIPHER *c;
1217 X509 *peer;
1218
1219 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1220 print_raw_cipherlist(s);
1221 c = SSL_get_current_cipher(s);
1222 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1223 do_print_sigalgs(bio_err, s, 0);
1224 peer = SSL_get0_peer_certificate(s);
1225 if (peer != NULL) {
1226 int nid;
1227
1228 BIO_puts(bio_err, "Peer certificate: ");
1229 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1230 0, get_nameopt());
1231 BIO_puts(bio_err, "\n");
1232 if (SSL_get_peer_signature_nid(s, &nid))
1233 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1234 if (SSL_get_peer_signature_type_nid(s, &nid))
1235 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1236 print_verify_detail(s, bio_err);
1237 } else {
1238 BIO_puts(bio_err, "No peer certificate\n");
1239 }
1240 #ifndef OPENSSL_NO_EC
1241 ssl_print_point_formats(bio_err, s);
1242 if (SSL_is_server(s))
1243 ssl_print_groups(bio_err, s, 1);
1244 else
1245 ssl_print_tmp_key(bio_err, s);
1246 #else
1247 if (!SSL_is_server(s))
1248 ssl_print_tmp_key(bio_err, s);
1249 #endif
1250 }
1251
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1252 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1253 SSL_CTX *ctx)
1254 {
1255 int i;
1256
1257 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1258 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1259 const char *flag = sk_OPENSSL_STRING_value(str, i);
1260 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1261
1262 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1263 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1264 flag, arg == NULL ? "<NULL>" : arg);
1265 ERR_print_errors(bio_err);
1266 return 0;
1267 }
1268 }
1269 if (!SSL_CONF_CTX_finish(cctx)) {
1270 BIO_puts(bio_err, "Error finishing context\n");
1271 ERR_print_errors(bio_err);
1272 return 0;
1273 }
1274 return 1;
1275 }
1276
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1277 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1278 {
1279 X509_CRL *crl;
1280 int i, ret = 1;
1281
1282 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1283 crl = sk_X509_CRL_value(crls, i);
1284 if (!X509_STORE_add_crl(st, crl))
1285 ret = 0;
1286 }
1287 return ret;
1288 }
1289
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1290 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1291 {
1292 X509_STORE *st;
1293
1294 st = SSL_CTX_get_cert_store(ctx);
1295 add_crls_store(st, crls);
1296 if (crl_download)
1297 store_setup_crl_download(st);
1298 return 1;
1299 }
1300
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)1301 int ssl_load_stores(SSL_CTX *ctx,
1302 const char *vfyCApath, const char *vfyCAfile,
1303 const char *vfyCAstore,
1304 const char *chCApath, const char *chCAfile,
1305 const char *chCAstore,
1306 STACK_OF(X509_CRL) *crls, int crl_download)
1307 {
1308 X509_STORE *vfy = NULL, *ch = NULL;
1309 int rv = 0;
1310
1311 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1312 vfy = X509_STORE_new();
1313 if (vfy == NULL)
1314 goto err;
1315 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1316 goto err;
1317 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1318 goto err;
1319 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1320 goto err;
1321 add_crls_store(vfy, crls);
1322 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1323 goto err;
1324 if (crl_download)
1325 store_setup_crl_download(vfy);
1326 }
1327 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1328 ch = X509_STORE_new();
1329 if (ch == NULL)
1330 goto err;
1331 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1332 goto err;
1333 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1334 goto err;
1335 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1336 goto err;
1337 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1338 goto err;
1339 }
1340 rv = 1;
1341 err:
1342 X509_STORE_free(vfy);
1343 X509_STORE_free(ch);
1344 return rv;
1345 }
1346
1347 /* Verbose print out of security callback */
1348
1349 typedef struct {
1350 BIO *out;
1351 int verbose;
1352 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1353 void *other, void *ex);
1354 } security_debug_ex;
1355
1356 static STRINT_PAIR callback_types[] = {
1357 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1358 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1359 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1360 #ifndef OPENSSL_NO_DH
1361 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1362 #endif
1363 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1364 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1365 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1366 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1367 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1368 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1369 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1370 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1371 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1372 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1373 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1374 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1375 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1376 {"SSL compression", SSL_SECOP_COMPRESSION},
1377 {"Session ticket", SSL_SECOP_TICKET},
1378 {NULL}
1379 };
1380
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1381 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1382 int op, int bits, int nid,
1383 void *other, void *ex)
1384 {
1385 security_debug_ex *sdb = ex;
1386 int rv, show_bits = 1, cert_md = 0;
1387 const char *nm;
1388 int show_nm;
1389
1390 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1391 if (rv == 1 && sdb->verbose < 2)
1392 return 1;
1393 BIO_puts(sdb->out, "Security callback: ");
1394
1395 nm = lookup(op, callback_types, NULL);
1396 show_nm = nm != NULL;
1397 switch (op) {
1398 case SSL_SECOP_TICKET:
1399 case SSL_SECOP_COMPRESSION:
1400 show_bits = 0;
1401 show_nm = 0;
1402 break;
1403 case SSL_SECOP_VERSION:
1404 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1405 show_bits = 0;
1406 show_nm = 0;
1407 break;
1408 case SSL_SECOP_CA_MD:
1409 case SSL_SECOP_PEER_CA_MD:
1410 cert_md = 1;
1411 break;
1412 case SSL_SECOP_SIGALG_SUPPORTED:
1413 case SSL_SECOP_SIGALG_SHARED:
1414 case SSL_SECOP_SIGALG_CHECK:
1415 case SSL_SECOP_SIGALG_MASK:
1416 show_nm = 0;
1417 break;
1418 }
1419 if (show_nm)
1420 BIO_printf(sdb->out, "%s=", nm);
1421
1422 switch (op & SSL_SECOP_OTHER_TYPE) {
1423
1424 case SSL_SECOP_OTHER_CIPHER:
1425 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1426 break;
1427
1428 #ifndef OPENSSL_NO_EC
1429 case SSL_SECOP_OTHER_CURVE:
1430 {
1431 const char *cname;
1432 cname = EC_curve_nid2nist(nid);
1433 if (cname == NULL)
1434 cname = OBJ_nid2sn(nid);
1435 BIO_puts(sdb->out, cname);
1436 }
1437 break;
1438 #endif
1439 case SSL_SECOP_OTHER_CERT:
1440 {
1441 if (cert_md) {
1442 int sig_nid = X509_get_signature_nid(other);
1443
1444 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1445 } else {
1446 EVP_PKEY *pkey = X509_get0_pubkey(other);
1447
1448 if (pkey == NULL) {
1449 BIO_printf(sdb->out, "Public key missing");
1450 } else {
1451 const char *algname = "";
1452
1453 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1454 &algname, EVP_PKEY_get0_asn1(pkey));
1455 BIO_printf(sdb->out, "%s, bits=%d",
1456 algname, EVP_PKEY_get_bits(pkey));
1457 }
1458 }
1459 break;
1460 }
1461 case SSL_SECOP_OTHER_SIGALG:
1462 {
1463 const unsigned char *salg = other;
1464 const char *sname = NULL;
1465 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1466 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1467
1468 if (nm != NULL)
1469 BIO_printf(sdb->out, "%s", nm);
1470 else
1471 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1472
1473 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1474 if (sname != NULL) {
1475 BIO_printf(sdb->out, " scheme=%s", sname);
1476 } else {
1477 int alg_code = salg[1];
1478 int hash_code = salg[0];
1479 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1480 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1481
1482 if (alg_str != NULL && hash_str != NULL)
1483 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1484 else
1485 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1486 }
1487 }
1488
1489 }
1490
1491 if (show_bits)
1492 BIO_printf(sdb->out, ", security bits=%d", bits);
1493 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1494 return rv;
1495 }
1496
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1497 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1498 {
1499 static security_debug_ex sdb;
1500
1501 sdb.out = bio_err;
1502 sdb.verbose = verbose;
1503 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1504 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1505 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1506 }
1507
keylog_callback(const SSL * ssl,const char * line)1508 static void keylog_callback(const SSL *ssl, const char *line)
1509 {
1510 if (bio_keylog == NULL) {
1511 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1512 return;
1513 }
1514
1515 /*
1516 * There might be concurrent writers to the keylog file, so we must ensure
1517 * that the given line is written at once.
1518 */
1519 BIO_printf(bio_keylog, "%s\n", line);
1520 (void)BIO_flush(bio_keylog);
1521 }
1522
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1523 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1524 {
1525 /* Close any open files */
1526 BIO_free_all(bio_keylog);
1527 bio_keylog = NULL;
1528
1529 if (ctx == NULL || keylog_file == NULL) {
1530 /* Keylogging is disabled, OK. */
1531 return 0;
1532 }
1533
1534 /*
1535 * Append rather than write in order to allow concurrent modification.
1536 * Furthermore, this preserves existing keylog files which is useful when
1537 * the tool is run multiple times.
1538 */
1539 bio_keylog = BIO_new_file(keylog_file, "a");
1540 if (bio_keylog == NULL) {
1541 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1542 return 1;
1543 }
1544
1545 /* Write a header for seekable, empty files (this excludes pipes). */
1546 if (BIO_tell(bio_keylog) == 0) {
1547 BIO_puts(bio_keylog,
1548 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1549 (void)BIO_flush(bio_keylog);
1550 }
1551 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1552 return 0;
1553 }
1554
print_ca_names(BIO * bio,SSL * s)1555 void print_ca_names(BIO *bio, SSL *s)
1556 {
1557 const char *cs = SSL_is_server(s) ? "server" : "client";
1558 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1559 int i;
1560
1561 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1562 if (!SSL_is_server(s))
1563 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1564 return;
1565 }
1566
1567 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1568 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1569 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1570 BIO_write(bio, "\n", 1);
1571 }
1572 }
1573