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 switch (rsign | rhash << 8) {
292 case 0x0809:
293 BIO_puts(out, "rsa_pss_pss_sha256");
294 continue;
295 case 0x080a:
296 BIO_puts(out, "rsa_pss_pss_sha384");
297 continue;
298 case 0x080b:
299 BIO_puts(out, "rsa_pss_pss_sha512");
300 continue;
301 case 0x081a:
302 BIO_puts(out, "ecdsa_brainpoolP256r1_sha256");
303 continue;
304 case 0x081b:
305 BIO_puts(out, "ecdsa_brainpoolP384r1_sha384");
306 continue;
307 case 0x081c:
308 BIO_puts(out, "ecdsa_brainpoolP512r1_sha512");
309 continue;
310 }
311 sstr = get_sigtype(sign_nid);
312 if (sstr)
313 BIO_printf(out, "%s", sstr);
314 else
315 BIO_printf(out, "0x%02X", (int)rsign);
316 if (hash_nid != NID_undef)
317 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
318 else if (sstr == NULL)
319 BIO_printf(out, "+0x%02X", (int)rhash);
320 }
321 BIO_puts(out, "\n");
322 return 1;
323 }
324
ssl_print_sigalgs(BIO * out,SSL * s)325 int ssl_print_sigalgs(BIO *out, SSL *s)
326 {
327 int nid;
328
329 if (!SSL_is_server(s))
330 ssl_print_client_cert_types(out, s);
331 do_print_sigalgs(out, s, 0);
332 do_print_sigalgs(out, s, 1);
333 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
334 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
335 if (SSL_get_peer_signature_type_nid(s, &nid))
336 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
337 return 1;
338 }
339
340 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)341 int ssl_print_point_formats(BIO *out, SSL *s)
342 {
343 int i, nformats;
344 const char *pformats;
345
346 nformats = SSL_get0_ec_point_formats(s, &pformats);
347 if (nformats <= 0)
348 return 1;
349 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
350 for (i = 0; i < nformats; i++, pformats++) {
351 if (i)
352 BIO_puts(out, ":");
353 switch (*pformats) {
354 case TLSEXT_ECPOINTFORMAT_uncompressed:
355 BIO_puts(out, "uncompressed");
356 break;
357
358 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
359 BIO_puts(out, "ansiX962_compressed_prime");
360 break;
361
362 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
363 BIO_puts(out, "ansiX962_compressed_char2");
364 break;
365
366 default:
367 BIO_printf(out, "unknown(%d)", (int)*pformats);
368 break;
369
370 }
371 }
372 BIO_puts(out, "\n");
373 return 1;
374 }
375
ssl_print_groups(BIO * out,SSL * s,int noshared)376 int ssl_print_groups(BIO *out, SSL *s, int noshared)
377 {
378 int i, ngroups, *groups, nid;
379
380 ngroups = SSL_get1_groups(s, NULL);
381 if (ngroups <= 0)
382 return 1;
383 groups = app_malloc(ngroups * sizeof(int), "groups to print");
384 SSL_get1_groups(s, groups);
385
386 BIO_puts(out, "Supported groups: ");
387 for (i = 0; i < ngroups; i++) {
388 if (i)
389 BIO_puts(out, ":");
390 nid = groups[i];
391 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
392 }
393 OPENSSL_free(groups);
394 if (noshared) {
395 BIO_puts(out, "\n");
396 return 1;
397 }
398 BIO_puts(out, "\nShared groups: ");
399 ngroups = SSL_get_shared_group(s, -1);
400 for (i = 0; i < ngroups; i++) {
401 if (i)
402 BIO_puts(out, ":");
403 nid = SSL_get_shared_group(s, i);
404 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
405 }
406 if (ngroups == 0)
407 BIO_puts(out, "NONE");
408 BIO_puts(out, "\n");
409 return 1;
410 }
411 #endif
412
ssl_print_tmp_key(BIO * out,SSL * s)413 int ssl_print_tmp_key(BIO *out, SSL *s)
414 {
415 EVP_PKEY *key;
416
417 if (!SSL_get_peer_tmp_key(s, &key))
418 return 1;
419 BIO_puts(out, "Server Temp Key: ");
420 switch (EVP_PKEY_get_id(key)) {
421 case EVP_PKEY_RSA:
422 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
423 break;
424
425 case EVP_PKEY_DH:
426 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
427 break;
428 #ifndef OPENSSL_NO_EC
429 case EVP_PKEY_EC:
430 {
431 char name[80];
432 size_t name_len;
433
434 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
435 name, sizeof(name), &name_len))
436 strcpy(name, "?");
437 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
438 }
439 break;
440 #endif
441 default:
442 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
443 EVP_PKEY_get_bits(key));
444 }
445 EVP_PKEY_free(key);
446 return 1;
447 }
448
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)449 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
450 int argi, long argl, int ret, size_t *processed)
451 {
452 BIO *out;
453
454 out = (BIO *)BIO_get_callback_arg(bio);
455 if (out == NULL)
456 return ret;
457
458 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
459 if (ret > 0 && processed != NULL) {
460 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
461 (void *)bio, (void *)argp, len, *processed, *processed);
462 BIO_dump(out, argp, (int)*processed);
463 } else {
464 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
465 (void *)bio, (void *)argp, len, ret);
466 }
467 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
468 if (ret > 0 && processed != NULL) {
469 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
470 (void *)bio, (void *)argp, len, *processed, *processed);
471 BIO_dump(out, argp, (int)*processed);
472 } else {
473 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
474 (void *)bio, (void *)argp, len, ret);
475 }
476 }
477 return ret;
478 }
479
apps_ssl_info_callback(const SSL * s,int where,int ret)480 void apps_ssl_info_callback(const SSL *s, int where, int ret)
481 {
482 const char *str;
483 int w;
484
485 w = where & ~SSL_ST_MASK;
486
487 if (w & SSL_ST_CONNECT)
488 str = "SSL_connect";
489 else if (w & SSL_ST_ACCEPT)
490 str = "SSL_accept";
491 else
492 str = "undefined";
493
494 if (where & SSL_CB_LOOP) {
495 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
496 } else if (where & SSL_CB_ALERT) {
497 str = (where & SSL_CB_READ) ? "read" : "write";
498 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
499 str,
500 SSL_alert_type_string_long(ret),
501 SSL_alert_desc_string_long(ret));
502 } else if (where & SSL_CB_EXIT) {
503 if (ret == 0)
504 BIO_printf(bio_err, "%s:failed in %s\n",
505 str, SSL_state_string_long(s));
506 else if (ret < 0)
507 BIO_printf(bio_err, "%s:error in %s\n",
508 str, SSL_state_string_long(s));
509 }
510 }
511
512 static STRINT_PAIR ssl_versions[] = {
513 {"SSL 3.0", SSL3_VERSION},
514 {"TLS 1.0", TLS1_VERSION},
515 {"TLS 1.1", TLS1_1_VERSION},
516 {"TLS 1.2", TLS1_2_VERSION},
517 {"TLS 1.3", TLS1_3_VERSION},
518 {"DTLS 1.0", DTLS1_VERSION},
519 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
520 {NULL}
521 };
522
523 static STRINT_PAIR alert_types[] = {
524 {" close_notify", 0},
525 {" end_of_early_data", 1},
526 {" unexpected_message", 10},
527 {" bad_record_mac", 20},
528 {" decryption_failed", 21},
529 {" record_overflow", 22},
530 {" decompression_failure", 30},
531 {" handshake_failure", 40},
532 {" bad_certificate", 42},
533 {" unsupported_certificate", 43},
534 {" certificate_revoked", 44},
535 {" certificate_expired", 45},
536 {" certificate_unknown", 46},
537 {" illegal_parameter", 47},
538 {" unknown_ca", 48},
539 {" access_denied", 49},
540 {" decode_error", 50},
541 {" decrypt_error", 51},
542 {" export_restriction", 60},
543 {" protocol_version", 70},
544 {" insufficient_security", 71},
545 {" internal_error", 80},
546 {" inappropriate_fallback", 86},
547 {" user_canceled", 90},
548 {" no_renegotiation", 100},
549 {" missing_extension", 109},
550 {" unsupported_extension", 110},
551 {" certificate_unobtainable", 111},
552 {" unrecognized_name", 112},
553 {" bad_certificate_status_response", 113},
554 {" bad_certificate_hash_value", 114},
555 {" unknown_psk_identity", 115},
556 {" certificate_required", 116},
557 {NULL}
558 };
559
560 static STRINT_PAIR handshakes[] = {
561 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
562 {", ClientHello", SSL3_MT_CLIENT_HELLO},
563 {", ServerHello", SSL3_MT_SERVER_HELLO},
564 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
565 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
566 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
567 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
568 {", Certificate", SSL3_MT_CERTIFICATE},
569 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
570 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
571 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
572 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
573 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
574 {", Finished", SSL3_MT_FINISHED},
575 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
576 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
577 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
578 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
579 #ifndef OPENSSL_NO_NEXTPROTONEG
580 {", NextProto", SSL3_MT_NEXT_PROTO},
581 #endif
582 {", MessageHash", SSL3_MT_MESSAGE_HASH},
583 {NULL}
584 };
585
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)586 void msg_cb(int write_p, int version, int content_type, const void *buf,
587 size_t len, SSL *ssl, void *arg)
588 {
589 BIO *bio = arg;
590 const char *str_write_p = write_p ? ">>>" : "<<<";
591 char tmpbuf[128];
592 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
593 const unsigned char* bp = buf;
594
595 if (version == SSL3_VERSION ||
596 version == TLS1_VERSION ||
597 version == TLS1_1_VERSION ||
598 version == TLS1_2_VERSION ||
599 version == TLS1_3_VERSION ||
600 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
601 str_version = lookup(version, ssl_versions, "???");
602 switch (content_type) {
603 case SSL3_RT_CHANGE_CIPHER_SPEC:
604 /* type 20 */
605 str_content_type = ", ChangeCipherSpec";
606 break;
607 case SSL3_RT_ALERT:
608 /* type 21 */
609 str_content_type = ", Alert";
610 str_details1 = ", ???";
611 if (len == 2) {
612 switch (bp[0]) {
613 case 1:
614 str_details1 = ", warning";
615 break;
616 case 2:
617 str_details1 = ", fatal";
618 break;
619 }
620 str_details2 = lookup((int)bp[1], alert_types, " ???");
621 }
622 break;
623 case SSL3_RT_HANDSHAKE:
624 /* type 22 */
625 str_content_type = ", Handshake";
626 str_details1 = "???";
627 if (len > 0)
628 str_details1 = lookup((int)bp[0], handshakes, "???");
629 break;
630 case SSL3_RT_APPLICATION_DATA:
631 /* type 23 */
632 str_content_type = ", ApplicationData";
633 break;
634 case SSL3_RT_HEADER:
635 /* type 256 */
636 str_content_type = ", RecordHeader";
637 break;
638 case SSL3_RT_INNER_CONTENT_TYPE:
639 /* type 257 */
640 str_content_type = ", InnerContent";
641 break;
642 default:
643 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
644 str_content_type = tmpbuf;
645 }
646 } else {
647 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
648 str_version = tmpbuf;
649 }
650
651 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
652 str_content_type, (unsigned long)len, str_details1,
653 str_details2);
654
655 if (len > 0) {
656 size_t num, i;
657
658 BIO_printf(bio, " ");
659 num = len;
660 for (i = 0; i < num; i++) {
661 if (i % 16 == 0 && i > 0)
662 BIO_printf(bio, "\n ");
663 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
664 }
665 if (i < len)
666 BIO_printf(bio, " ...");
667 BIO_printf(bio, "\n");
668 }
669 (void)BIO_flush(bio);
670 }
671
672 static const STRINT_PAIR tlsext_types[] = {
673 {"server name", TLSEXT_TYPE_server_name},
674 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
675 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
676 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
677 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
678 {"status request", TLSEXT_TYPE_status_request},
679 {"user mapping", TLSEXT_TYPE_user_mapping},
680 {"client authz", TLSEXT_TYPE_client_authz},
681 {"server authz", TLSEXT_TYPE_server_authz},
682 {"cert type", TLSEXT_TYPE_cert_type},
683 {"supported_groups", TLSEXT_TYPE_supported_groups},
684 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
685 {"SRP", TLSEXT_TYPE_srp},
686 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
687 {"use SRTP", TLSEXT_TYPE_use_srtp},
688 {"session ticket", TLSEXT_TYPE_session_ticket},
689 {"renegotiation info", TLSEXT_TYPE_renegotiate},
690 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
691 {"TLS padding", TLSEXT_TYPE_padding},
692 #ifdef TLSEXT_TYPE_next_proto_neg
693 {"next protocol", TLSEXT_TYPE_next_proto_neg},
694 #endif
695 #ifdef TLSEXT_TYPE_encrypt_then_mac
696 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
697 #endif
698 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
699 {"application layer protocol negotiation",
700 TLSEXT_TYPE_application_layer_protocol_negotiation},
701 #endif
702 #ifdef TLSEXT_TYPE_extended_master_secret
703 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
704 #endif
705 {"key share", TLSEXT_TYPE_key_share},
706 {"supported versions", TLSEXT_TYPE_supported_versions},
707 {"psk", TLSEXT_TYPE_psk},
708 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
709 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
710 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
711 {"early_data", TLSEXT_TYPE_early_data},
712 {NULL}
713 };
714
715 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
716 static STRINT_PAIR signature_tls13_scheme_list[] = {
717 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
718 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
719 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
720 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
721 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
722 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
723 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
724 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
725 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
726 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
727 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
728 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
729 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
730 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
731 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
732 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
733 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
734 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
735 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
736 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
737 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
738 {NULL}
739 };
740
741 /* from rfc5246 7.4.1.4.1. */
742 static STRINT_PAIR signature_tls12_alg_list[] = {
743 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
744 {"RSA", TLSEXT_signature_rsa /* 1 */},
745 {"DSA", TLSEXT_signature_dsa /* 2 */},
746 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
747 {NULL}
748 };
749
750 /* from rfc5246 7.4.1.4.1. */
751 static STRINT_PAIR signature_tls12_hash_list[] = {
752 {"none", TLSEXT_hash_none /* 0 */},
753 {"MD5", TLSEXT_hash_md5 /* 1 */},
754 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
755 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
756 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
757 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
758 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
759 {NULL}
760 };
761
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)762 void tlsext_cb(SSL *s, int client_server, int type,
763 const unsigned char *data, int len, void *arg)
764 {
765 BIO *bio = arg;
766 const char *extname = lookup(type, tlsext_types, "unknown");
767
768 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
769 client_server ? "server" : "client", extname, type, len);
770 BIO_dump(bio, (const char *)data, len);
771 (void)BIO_flush(bio);
772 }
773
774 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)775 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
776 size_t *cookie_len)
777 {
778 unsigned char *buffer = NULL;
779 size_t length = 0;
780 unsigned short port;
781 BIO_ADDR *lpeer = NULL, *peer = NULL;
782 int res = 0;
783
784 /* Initialize a random secret */
785 if (!cookie_initialized) {
786 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
787 BIO_printf(bio_err, "error setting random cookie secret\n");
788 return 0;
789 }
790 cookie_initialized = 1;
791 }
792
793 if (SSL_is_dtls(ssl)) {
794 lpeer = peer = BIO_ADDR_new();
795 if (peer == NULL) {
796 BIO_printf(bio_err, "memory full\n");
797 return 0;
798 }
799
800 /* Read peer information */
801 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
802 } else {
803 peer = ourpeer;
804 }
805
806 /* Create buffer with peer's address and port */
807 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
808 BIO_printf(bio_err, "Failed getting peer address\n");
809 BIO_ADDR_free(lpeer);
810 return 0;
811 }
812 OPENSSL_assert(length != 0);
813 port = BIO_ADDR_rawport(peer);
814 length += sizeof(port);
815 buffer = app_malloc(length, "cookie generate buffer");
816
817 memcpy(buffer, &port, sizeof(port));
818 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
819
820 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
821 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
822 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
823 BIO_printf(bio_err,
824 "Error calculating HMAC-SHA1 of buffer with secret\n");
825 goto end;
826 }
827 res = 1;
828 end:
829 OPENSSL_free(buffer);
830 BIO_ADDR_free(lpeer);
831
832 return res;
833 }
834
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)835 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
836 size_t cookie_len)
837 {
838 unsigned char result[EVP_MAX_MD_SIZE];
839 size_t resultlength;
840
841 /* Note: we check cookie_initialized because if it's not,
842 * it cannot be valid */
843 if (cookie_initialized
844 && generate_stateless_cookie_callback(ssl, result, &resultlength)
845 && cookie_len == resultlength
846 && memcmp(result, cookie, resultlength) == 0)
847 return 1;
848
849 return 0;
850 }
851
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)852 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
853 unsigned int *cookie_len)
854 {
855 size_t temp = 0;
856 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
857
858 if (res != 0)
859 *cookie_len = (unsigned int)temp;
860 return res;
861 }
862
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)863 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
864 unsigned int cookie_len)
865 {
866 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
867 }
868
869 #endif
870
871 /*
872 * Example of extended certificate handling. Where the standard support of
873 * one certificate per algorithm is not sufficient an application can decide
874 * which certificate(s) to use at runtime based on whatever criteria it deems
875 * appropriate.
876 */
877
878 /* Linked list of certificates, keys and chains */
879 struct ssl_excert_st {
880 int certform;
881 const char *certfile;
882 int keyform;
883 const char *keyfile;
884 const char *chainfile;
885 X509 *cert;
886 EVP_PKEY *key;
887 STACK_OF(X509) *chain;
888 int build_chain;
889 struct ssl_excert_st *next, *prev;
890 };
891
892 static STRINT_PAIR chain_flags[] = {
893 {"Overall Validity", CERT_PKEY_VALID},
894 {"Sign with EE key", CERT_PKEY_SIGN},
895 {"EE signature", CERT_PKEY_EE_SIGNATURE},
896 {"CA signature", CERT_PKEY_CA_SIGNATURE},
897 {"EE key parameters", CERT_PKEY_EE_PARAM},
898 {"CA key parameters", CERT_PKEY_CA_PARAM},
899 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
900 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
901 {"Certificate Type", CERT_PKEY_CERT_TYPE},
902 {NULL}
903 };
904
print_chain_flags(SSL * s,int flags)905 static void print_chain_flags(SSL *s, int flags)
906 {
907 STRINT_PAIR *pp;
908
909 for (pp = chain_flags; pp->name; ++pp)
910 BIO_printf(bio_err, "\t%s: %s\n",
911 pp->name,
912 (flags & pp->retval) ? "OK" : "NOT OK");
913 BIO_printf(bio_err, "\tSuite B: ");
914 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
915 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
916 else
917 BIO_printf(bio_err, "not tested\n");
918 }
919
920 /*
921 * Very basic selection callback: just use any certificate chain reported as
922 * valid. More sophisticated could prioritise according to local policy.
923 */
set_cert_cb(SSL * ssl,void * arg)924 static int set_cert_cb(SSL *ssl, void *arg)
925 {
926 int i, rv;
927 SSL_EXCERT *exc = arg;
928 #ifdef CERT_CB_TEST_RETRY
929 static int retry_cnt;
930
931 if (retry_cnt < 5) {
932 retry_cnt++;
933 BIO_printf(bio_err,
934 "Certificate callback retry test: count %d\n",
935 retry_cnt);
936 return -1;
937 }
938 #endif
939 SSL_certs_clear(ssl);
940
941 if (exc == NULL)
942 return 1;
943
944 /*
945 * Go to end of list and traverse backwards since we prepend newer
946 * entries this retains the original order.
947 */
948 while (exc->next != NULL)
949 exc = exc->next;
950
951 i = 0;
952
953 while (exc != NULL) {
954 i++;
955 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
956 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
957 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
958 get_nameopt());
959 BIO_puts(bio_err, "\n");
960 print_chain_flags(ssl, rv);
961 if (rv & CERT_PKEY_VALID) {
962 if (!SSL_use_certificate(ssl, exc->cert)
963 || !SSL_use_PrivateKey(ssl, exc->key)) {
964 return 0;
965 }
966 /*
967 * NB: we wouldn't normally do this as it is not efficient
968 * building chains on each connection better to cache the chain
969 * in advance.
970 */
971 if (exc->build_chain) {
972 if (!SSL_build_cert_chain(ssl, 0))
973 return 0;
974 } else if (exc->chain != NULL) {
975 if (!SSL_set1_chain(ssl, exc->chain))
976 return 0;
977 }
978 }
979 exc = exc->prev;
980 }
981 return 1;
982 }
983
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)984 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
985 {
986 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
987 }
988
ssl_excert_prepend(SSL_EXCERT ** pexc)989 static int ssl_excert_prepend(SSL_EXCERT **pexc)
990 {
991 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
992
993 memset(exc, 0, sizeof(*exc));
994
995 exc->next = *pexc;
996 *pexc = exc;
997
998 if (exc->next) {
999 exc->certform = exc->next->certform;
1000 exc->keyform = exc->next->keyform;
1001 exc->next->prev = exc;
1002 } else {
1003 exc->certform = FORMAT_PEM;
1004 exc->keyform = FORMAT_PEM;
1005 }
1006 return 1;
1007
1008 }
1009
ssl_excert_free(SSL_EXCERT * exc)1010 void ssl_excert_free(SSL_EXCERT *exc)
1011 {
1012 SSL_EXCERT *curr;
1013
1014 if (exc == NULL)
1015 return;
1016 while (exc) {
1017 X509_free(exc->cert);
1018 EVP_PKEY_free(exc->key);
1019 sk_X509_pop_free(exc->chain, X509_free);
1020 curr = exc;
1021 exc = exc->next;
1022 OPENSSL_free(curr);
1023 }
1024 }
1025
load_excert(SSL_EXCERT ** pexc)1026 int load_excert(SSL_EXCERT **pexc)
1027 {
1028 SSL_EXCERT *exc = *pexc;
1029
1030 if (exc == NULL)
1031 return 1;
1032 /* If nothing in list, free and set to NULL */
1033 if (exc->certfile == NULL && exc->next == NULL) {
1034 ssl_excert_free(exc);
1035 *pexc = NULL;
1036 return 1;
1037 }
1038 for (; exc; exc = exc->next) {
1039 if (exc->certfile == NULL) {
1040 BIO_printf(bio_err, "Missing filename\n");
1041 return 0;
1042 }
1043 exc->cert = load_cert(exc->certfile, exc->certform,
1044 "Server Certificate");
1045 if (exc->cert == NULL)
1046 return 0;
1047 if (exc->keyfile != NULL) {
1048 exc->key = load_key(exc->keyfile, exc->keyform,
1049 0, NULL, NULL, "server key");
1050 } else {
1051 exc->key = load_key(exc->certfile, exc->certform,
1052 0, NULL, NULL, "server key");
1053 }
1054 if (exc->key == NULL)
1055 return 0;
1056 if (exc->chainfile != NULL) {
1057 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1058 return 0;
1059 }
1060 }
1061 return 1;
1062 }
1063
1064 enum range { OPT_X_ENUM };
1065
args_excert(int opt,SSL_EXCERT ** pexc)1066 int args_excert(int opt, SSL_EXCERT **pexc)
1067 {
1068 SSL_EXCERT *exc = *pexc;
1069
1070 assert(opt > OPT_X__FIRST);
1071 assert(opt < OPT_X__LAST);
1072
1073 if (exc == NULL) {
1074 if (!ssl_excert_prepend(&exc)) {
1075 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1076 opt_getprog());
1077 goto err;
1078 }
1079 *pexc = exc;
1080 }
1081
1082 switch ((enum range)opt) {
1083 case OPT_X__FIRST:
1084 case OPT_X__LAST:
1085 return 0;
1086 case OPT_X_CERT:
1087 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1088 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1089 goto err;
1090 }
1091 *pexc = exc;
1092 exc->certfile = opt_arg();
1093 break;
1094 case OPT_X_KEY:
1095 if (exc->keyfile != NULL) {
1096 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1097 goto err;
1098 }
1099 exc->keyfile = opt_arg();
1100 break;
1101 case OPT_X_CHAIN:
1102 if (exc->chainfile != NULL) {
1103 BIO_printf(bio_err, "%s: Chain already specified\n",
1104 opt_getprog());
1105 goto err;
1106 }
1107 exc->chainfile = opt_arg();
1108 break;
1109 case OPT_X_CHAIN_BUILD:
1110 exc->build_chain = 1;
1111 break;
1112 case OPT_X_CERTFORM:
1113 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1114 return 0;
1115 break;
1116 case OPT_X_KEYFORM:
1117 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1118 return 0;
1119 break;
1120 }
1121 return 1;
1122
1123 err:
1124 ERR_print_errors(bio_err);
1125 ssl_excert_free(exc);
1126 *pexc = NULL;
1127 return 0;
1128 }
1129
print_raw_cipherlist(SSL * s)1130 static void print_raw_cipherlist(SSL *s)
1131 {
1132 const unsigned char *rlist;
1133 static const unsigned char scsv_id[] = { 0, 0xFF };
1134 size_t i, rlistlen, num;
1135
1136 if (!SSL_is_server(s))
1137 return;
1138 num = SSL_get0_raw_cipherlist(s, NULL);
1139 OPENSSL_assert(num == 2);
1140 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1141 BIO_puts(bio_err, "Client cipher list: ");
1142 for (i = 0; i < rlistlen; i += num, rlist += num) {
1143 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1144 if (i)
1145 BIO_puts(bio_err, ":");
1146 if (c != NULL) {
1147 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1148 } else if (memcmp(rlist, scsv_id, num) == 0) {
1149 BIO_puts(bio_err, "SCSV");
1150 } else {
1151 size_t j;
1152 BIO_puts(bio_err, "0x");
1153 for (j = 0; j < num; j++)
1154 BIO_printf(bio_err, "%02X", rlist[j]);
1155 }
1156 }
1157 BIO_puts(bio_err, "\n");
1158 }
1159
1160 /*
1161 * Hex encoder for TLSA RRdata, not ':' delimited.
1162 */
hexencode(const unsigned char * data,size_t len)1163 static char *hexencode(const unsigned char *data, size_t len)
1164 {
1165 static const char *hex = "0123456789abcdef";
1166 char *out;
1167 char *cp;
1168 size_t outlen = 2 * len + 1;
1169 int ilen = (int) outlen;
1170
1171 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1172 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1173 opt_getprog(), len);
1174 exit(1);
1175 }
1176 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1177
1178 while (len-- > 0) {
1179 *cp++ = hex[(*data >> 4) & 0x0f];
1180 *cp++ = hex[*data++ & 0x0f];
1181 }
1182 *cp = '\0';
1183 return out;
1184 }
1185
print_verify_detail(SSL * s,BIO * bio)1186 void print_verify_detail(SSL *s, BIO *bio)
1187 {
1188 int mdpth;
1189 EVP_PKEY *mspki;
1190 long verify_err = SSL_get_verify_result(s);
1191
1192 if (verify_err == X509_V_OK) {
1193 const char *peername = SSL_get0_peername(s);
1194
1195 BIO_printf(bio, "Verification: OK\n");
1196 if (peername != NULL)
1197 BIO_printf(bio, "Verified peername: %s\n", peername);
1198 } else {
1199 const char *reason = X509_verify_cert_error_string(verify_err);
1200
1201 BIO_printf(bio, "Verification error: %s\n", reason);
1202 }
1203
1204 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1205 uint8_t usage, selector, mtype;
1206 const unsigned char *data = NULL;
1207 size_t dlen = 0;
1208 char *hexdata;
1209
1210 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1211
1212 /*
1213 * The TLSA data field can be quite long when it is a certificate,
1214 * public key or even a SHA2-512 digest. Because the initial octets of
1215 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1216 * and lengths, we show the last 12 bytes of the data instead, as these
1217 * are more likely to distinguish distinct TLSA records.
1218 */
1219 #define TLSA_TAIL_SIZE 12
1220 if (dlen > TLSA_TAIL_SIZE)
1221 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1222 else
1223 hexdata = hexencode(data, dlen);
1224 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1225 usage, selector, mtype,
1226 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1227 (mspki != NULL) ? "signed the certificate" :
1228 mdpth ? "matched TA certificate" : "matched EE certificate",
1229 mdpth);
1230 OPENSSL_free(hexdata);
1231 }
1232 }
1233
print_ssl_summary(SSL * s)1234 void print_ssl_summary(SSL *s)
1235 {
1236 const SSL_CIPHER *c;
1237 X509 *peer;
1238
1239 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1240 print_raw_cipherlist(s);
1241 c = SSL_get_current_cipher(s);
1242 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1243 do_print_sigalgs(bio_err, s, 0);
1244 peer = SSL_get0_peer_certificate(s);
1245 if (peer != NULL) {
1246 int nid;
1247
1248 BIO_puts(bio_err, "Peer certificate: ");
1249 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1250 0, get_nameopt());
1251 BIO_puts(bio_err, "\n");
1252 if (SSL_get_peer_signature_nid(s, &nid))
1253 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1254 if (SSL_get_peer_signature_type_nid(s, &nid))
1255 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1256 print_verify_detail(s, bio_err);
1257 } else {
1258 BIO_puts(bio_err, "No peer certificate\n");
1259 }
1260 #ifndef OPENSSL_NO_EC
1261 ssl_print_point_formats(bio_err, s);
1262 if (SSL_is_server(s))
1263 ssl_print_groups(bio_err, s, 1);
1264 else
1265 ssl_print_tmp_key(bio_err, s);
1266 #else
1267 if (!SSL_is_server(s))
1268 ssl_print_tmp_key(bio_err, s);
1269 #endif
1270 }
1271
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1272 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1273 SSL_CTX *ctx)
1274 {
1275 int i;
1276
1277 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1278 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1279 const char *flag = sk_OPENSSL_STRING_value(str, i);
1280 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1281
1282 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1283 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1284 flag, arg == NULL ? "<NULL>" : arg);
1285 ERR_print_errors(bio_err);
1286 return 0;
1287 }
1288 }
1289 if (!SSL_CONF_CTX_finish(cctx)) {
1290 BIO_puts(bio_err, "Error finishing context\n");
1291 ERR_print_errors(bio_err);
1292 return 0;
1293 }
1294 return 1;
1295 }
1296
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1297 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1298 {
1299 X509_CRL *crl;
1300 int i, ret = 1;
1301
1302 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1303 crl = sk_X509_CRL_value(crls, i);
1304 if (!X509_STORE_add_crl(st, crl))
1305 ret = 0;
1306 }
1307 return ret;
1308 }
1309
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1310 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1311 {
1312 X509_STORE *st;
1313
1314 st = SSL_CTX_get_cert_store(ctx);
1315 add_crls_store(st, crls);
1316 if (crl_download)
1317 store_setup_crl_download(st);
1318 return 1;
1319 }
1320
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)1321 int ssl_load_stores(SSL_CTX *ctx,
1322 const char *vfyCApath, const char *vfyCAfile,
1323 const char *vfyCAstore,
1324 const char *chCApath, const char *chCAfile,
1325 const char *chCAstore,
1326 STACK_OF(X509_CRL) *crls, int crl_download)
1327 {
1328 X509_STORE *vfy = NULL, *ch = NULL;
1329 int rv = 0;
1330
1331 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1332 vfy = X509_STORE_new();
1333 if (vfy == NULL)
1334 goto err;
1335 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1336 goto err;
1337 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1338 goto err;
1339 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1340 goto err;
1341 add_crls_store(vfy, crls);
1342 if (SSL_CTX_set1_verify_cert_store(ctx, vfy) == 0)
1343 goto err;
1344 if (crl_download)
1345 store_setup_crl_download(vfy);
1346 }
1347 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1348 ch = X509_STORE_new();
1349 if (ch == NULL)
1350 goto err;
1351 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1352 goto err;
1353 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1354 goto err;
1355 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1356 goto err;
1357 if (SSL_CTX_set1_chain_cert_store(ctx, ch) == 0)
1358 goto err;
1359 }
1360 rv = 1;
1361 err:
1362 X509_STORE_free(vfy);
1363 X509_STORE_free(ch);
1364 return rv;
1365 }
1366
1367 /* Verbose print out of security callback */
1368
1369 typedef struct {
1370 BIO *out;
1371 int verbose;
1372 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1373 void *other, void *ex);
1374 } security_debug_ex;
1375
1376 static STRINT_PAIR callback_types[] = {
1377 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1378 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1379 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1380 #ifndef OPENSSL_NO_DH
1381 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1382 #endif
1383 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1384 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1385 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1386 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1387 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1388 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1389 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1390 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1391 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1392 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1393 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1394 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1395 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1396 {"SSL compression", SSL_SECOP_COMPRESSION},
1397 {"Session ticket", SSL_SECOP_TICKET},
1398 {NULL}
1399 };
1400
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1401 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1402 int op, int bits, int nid,
1403 void *other, void *ex)
1404 {
1405 security_debug_ex *sdb = ex;
1406 int rv, show_bits = 1, cert_md = 0;
1407 const char *nm;
1408 int show_nm;
1409
1410 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1411 if (rv == 1 && sdb->verbose < 2)
1412 return 1;
1413 BIO_puts(sdb->out, "Security callback: ");
1414
1415 nm = lookup(op, callback_types, NULL);
1416 show_nm = nm != NULL;
1417 switch (op) {
1418 case SSL_SECOP_TICKET:
1419 case SSL_SECOP_COMPRESSION:
1420 show_bits = 0;
1421 show_nm = 0;
1422 break;
1423 case SSL_SECOP_VERSION:
1424 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1425 show_bits = 0;
1426 show_nm = 0;
1427 break;
1428 case SSL_SECOP_CA_MD:
1429 case SSL_SECOP_PEER_CA_MD:
1430 cert_md = 1;
1431 break;
1432 case SSL_SECOP_SIGALG_SUPPORTED:
1433 case SSL_SECOP_SIGALG_SHARED:
1434 case SSL_SECOP_SIGALG_CHECK:
1435 case SSL_SECOP_SIGALG_MASK:
1436 show_nm = 0;
1437 break;
1438 }
1439 if (show_nm)
1440 BIO_printf(sdb->out, "%s=", nm);
1441
1442 switch (op & SSL_SECOP_OTHER_TYPE) {
1443
1444 case SSL_SECOP_OTHER_CIPHER:
1445 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1446 break;
1447
1448 #ifndef OPENSSL_NO_EC
1449 case SSL_SECOP_OTHER_CURVE:
1450 {
1451 const char *cname;
1452 cname = EC_curve_nid2nist(nid);
1453 if (cname == NULL)
1454 cname = OBJ_nid2sn(nid);
1455 BIO_puts(sdb->out, cname);
1456 }
1457 break;
1458 #endif
1459 case SSL_SECOP_OTHER_CERT:
1460 {
1461 if (cert_md) {
1462 int sig_nid = X509_get_signature_nid(other);
1463
1464 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1465 } else {
1466 EVP_PKEY *pkey = X509_get0_pubkey(other);
1467
1468 if (pkey == NULL) {
1469 BIO_printf(sdb->out, "Public key missing");
1470 } else {
1471 const char *algname = "";
1472
1473 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1474 &algname, EVP_PKEY_get0_asn1(pkey));
1475 BIO_printf(sdb->out, "%s, bits=%d",
1476 algname, EVP_PKEY_get_bits(pkey));
1477 }
1478 }
1479 break;
1480 }
1481 case SSL_SECOP_OTHER_SIGALG:
1482 {
1483 const unsigned char *salg = other;
1484 const char *sname = NULL;
1485 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1486 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1487
1488 if (nm != NULL)
1489 BIO_printf(sdb->out, "%s", nm);
1490 else
1491 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1492
1493 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1494 if (sname != NULL) {
1495 BIO_printf(sdb->out, " scheme=%s", sname);
1496 } else {
1497 int alg_code = salg[1];
1498 int hash_code = salg[0];
1499 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1500 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1501
1502 if (alg_str != NULL && hash_str != NULL)
1503 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1504 else
1505 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1506 }
1507 }
1508
1509 }
1510
1511 if (show_bits)
1512 BIO_printf(sdb->out, ", security bits=%d", bits);
1513 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1514 return rv;
1515 }
1516
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1517 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1518 {
1519 static security_debug_ex sdb;
1520
1521 sdb.out = bio_err;
1522 sdb.verbose = verbose;
1523 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1524 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1525 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1526 }
1527
keylog_callback(const SSL * ssl,const char * line)1528 static void keylog_callback(const SSL *ssl, const char *line)
1529 {
1530 if (bio_keylog == NULL) {
1531 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1532 return;
1533 }
1534
1535 /*
1536 * There might be concurrent writers to the keylog file, so we must ensure
1537 * that the given line is written at once.
1538 */
1539 BIO_printf(bio_keylog, "%s\n", line);
1540 (void)BIO_flush(bio_keylog);
1541 }
1542
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1543 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1544 {
1545 /* Close any open files */
1546 BIO_free_all(bio_keylog);
1547 bio_keylog = NULL;
1548
1549 if (ctx == NULL || keylog_file == NULL) {
1550 /* Keylogging is disabled, OK. */
1551 return 0;
1552 }
1553
1554 /*
1555 * Append rather than write in order to allow concurrent modification.
1556 * Furthermore, this preserves existing keylog files which is useful when
1557 * the tool is run multiple times.
1558 */
1559 bio_keylog = BIO_new_file(keylog_file, "a");
1560 if (bio_keylog == NULL) {
1561 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1562 return 1;
1563 }
1564
1565 /* Write a header for seekable, empty files (this excludes pipes). */
1566 if (BIO_tell(bio_keylog) == 0) {
1567 BIO_puts(bio_keylog,
1568 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1569 (void)BIO_flush(bio_keylog);
1570 }
1571 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1572 return 0;
1573 }
1574
print_ca_names(BIO * bio,SSL * s)1575 void print_ca_names(BIO *bio, SSL *s)
1576 {
1577 const char *cs = SSL_is_server(s) ? "server" : "client";
1578 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1579 int i;
1580
1581 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1582 if (!SSL_is_server(s))
1583 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1584 return;
1585 }
1586
1587 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1588 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1589 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1590 BIO_write(bio, "\n", 1);
1591 }
1592 }
1593