1 /*
2 * Copyright 1995-2021 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 BIO_puts(bio_err, "issuer= ");
80 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
81 0, get_nameopt());
82 BIO_puts(bio_err, "\n");
83 break;
84 case X509_V_ERR_CERT_NOT_YET_VALID:
85 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
86 BIO_printf(bio_err, "notBefore=");
87 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert));
88 BIO_printf(bio_err, "\n");
89 break;
90 case X509_V_ERR_CERT_HAS_EXPIRED:
91 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
92 BIO_printf(bio_err, "notAfter=");
93 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert));
94 BIO_printf(bio_err, "\n");
95 break;
96 case X509_V_ERR_NO_EXPLICIT_POLICY:
97 if (!verify_args.quiet)
98 policies_print(ctx);
99 break;
100 }
101 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
102 policies_print(ctx);
103 if (ok && !verify_args.quiet)
104 BIO_printf(bio_err, "verify return:%d\n", ok);
105 return ok;
106 }
107
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)108 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
109 {
110 if (cert_file != NULL) {
111 if (SSL_CTX_use_certificate_file(ctx, cert_file,
112 SSL_FILETYPE_PEM) <= 0) {
113 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
114 cert_file);
115 ERR_print_errors(bio_err);
116 return 0;
117 }
118 if (key_file == NULL)
119 key_file = cert_file;
120 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
121 BIO_printf(bio_err, "unable to get private key from '%s'\n",
122 key_file);
123 ERR_print_errors(bio_err);
124 return 0;
125 }
126
127 /*
128 * If we are using DSA, we can copy the parameters from the private
129 * key
130 */
131
132 /*
133 * Now we know that a key and cert have been set against the SSL
134 * context
135 */
136 if (!SSL_CTX_check_private_key(ctx)) {
137 BIO_printf(bio_err,
138 "Private key does not match the certificate public key\n");
139 return 0;
140 }
141 }
142 return 1;
143 }
144
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)145 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
146 STACK_OF(X509) *chain, int build_chain)
147 {
148 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
149 if (cert == NULL)
150 return 1;
151 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
152 BIO_printf(bio_err, "error setting certificate\n");
153 ERR_print_errors(bio_err);
154 return 0;
155 }
156
157 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
158 BIO_printf(bio_err, "error setting private key\n");
159 ERR_print_errors(bio_err);
160 return 0;
161 }
162
163 /*
164 * Now we know that a key and cert have been set against the SSL context
165 */
166 if (!SSL_CTX_check_private_key(ctx)) {
167 BIO_printf(bio_err,
168 "Private key does not match the certificate public key\n");
169 return 0;
170 }
171 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
172 BIO_printf(bio_err, "error setting certificate chain\n");
173 ERR_print_errors(bio_err);
174 return 0;
175 }
176 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
177 BIO_printf(bio_err, "error building certificate chain\n");
178 ERR_print_errors(bio_err);
179 return 0;
180 }
181 return 1;
182 }
183
184 static STRINT_PAIR cert_type_list[] = {
185 {"RSA sign", TLS_CT_RSA_SIGN},
186 {"DSA sign", TLS_CT_DSS_SIGN},
187 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
188 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
189 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
190 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
191 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
192 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
193 {"GOST12 Sign", TLS_CT_GOST12_IANA_SIGN},
194 {NULL}
195 };
196
ssl_print_client_cert_types(BIO * bio,SSL * s)197 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
198 {
199 const unsigned char *p;
200 int i;
201 int cert_type_num = SSL_get0_certificate_types(s, &p);
202 if (!cert_type_num)
203 return;
204 BIO_puts(bio, "Client Certificate Types: ");
205 for (i = 0; i < cert_type_num; i++) {
206 unsigned char cert_type = p[i];
207 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
208
209 if (i)
210 BIO_puts(bio, ", ");
211 if (cname != NULL)
212 BIO_puts(bio, cname);
213 else
214 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
215 }
216 BIO_puts(bio, "\n");
217 }
218
get_sigtype(int nid)219 static const char *get_sigtype(int nid)
220 {
221 switch (nid) {
222 case EVP_PKEY_RSA:
223 return "RSA";
224
225 case EVP_PKEY_RSA_PSS:
226 return "RSA-PSS";
227
228 case EVP_PKEY_DSA:
229 return "DSA";
230
231 case EVP_PKEY_EC:
232 return "ECDSA";
233
234 case NID_ED25519:
235 return "Ed25519";
236
237 case NID_ED448:
238 return "Ed448";
239
240 case NID_id_GostR3410_2001:
241 return "gost2001";
242
243 case NID_id_GostR3410_2012_256:
244 return "gost2012_256";
245
246 case NID_id_GostR3410_2012_512:
247 return "gost2012_512";
248
249 default:
250 return NULL;
251 }
252 }
253
do_print_sigalgs(BIO * out,SSL * s,int shared)254 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
255 {
256 int i, nsig, client;
257 client = SSL_is_server(s) ? 0 : 1;
258 if (shared)
259 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
260 else
261 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
262 if (nsig == 0)
263 return 1;
264
265 if (shared)
266 BIO_puts(out, "Shared ");
267
268 if (client)
269 BIO_puts(out, "Requested ");
270 BIO_puts(out, "Signature Algorithms: ");
271 for (i = 0; i < nsig; i++) {
272 int hash_nid, sign_nid;
273 unsigned char rhash, rsign;
274 const char *sstr = NULL;
275 if (shared)
276 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
277 &rsign, &rhash);
278 else
279 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
280 if (i)
281 BIO_puts(out, ":");
282 sstr = get_sigtype(sign_nid);
283 if (sstr)
284 BIO_printf(out, "%s", sstr);
285 else
286 BIO_printf(out, "0x%02X", (int)rsign);
287 if (hash_nid != NID_undef)
288 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
289 else if (sstr == NULL)
290 BIO_printf(out, "+0x%02X", (int)rhash);
291 }
292 BIO_puts(out, "\n");
293 return 1;
294 }
295
ssl_print_sigalgs(BIO * out,SSL * s)296 int ssl_print_sigalgs(BIO *out, SSL *s)
297 {
298 int nid;
299 if (!SSL_is_server(s))
300 ssl_print_client_cert_types(out, s);
301 do_print_sigalgs(out, s, 0);
302 do_print_sigalgs(out, s, 1);
303 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
304 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
305 if (SSL_get_peer_signature_type_nid(s, &nid))
306 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
307 return 1;
308 }
309
310 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)311 int ssl_print_point_formats(BIO *out, SSL *s)
312 {
313 int i, nformats;
314 const char *pformats;
315 nformats = SSL_get0_ec_point_formats(s, &pformats);
316 if (nformats <= 0)
317 return 1;
318 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
319 for (i = 0; i < nformats; i++, pformats++) {
320 if (i)
321 BIO_puts(out, ":");
322 switch (*pformats) {
323 case TLSEXT_ECPOINTFORMAT_uncompressed:
324 BIO_puts(out, "uncompressed");
325 break;
326
327 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
328 BIO_puts(out, "ansiX962_compressed_prime");
329 break;
330
331 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
332 BIO_puts(out, "ansiX962_compressed_char2");
333 break;
334
335 default:
336 BIO_printf(out, "unknown(%d)", (int)*pformats);
337 break;
338
339 }
340 }
341 BIO_puts(out, "\n");
342 return 1;
343 }
344
ssl_print_groups(BIO * out,SSL * s,int noshared)345 int ssl_print_groups(BIO *out, SSL *s, int noshared)
346 {
347 int i, ngroups, *groups, nid;
348
349 ngroups = SSL_get1_groups(s, NULL);
350 if (ngroups <= 0)
351 return 1;
352 groups = app_malloc(ngroups * sizeof(int), "groups to print");
353 SSL_get1_groups(s, groups);
354
355 BIO_puts(out, "Supported groups: ");
356 for (i = 0; i < ngroups; i++) {
357 if (i)
358 BIO_puts(out, ":");
359 nid = groups[i];
360 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
361 }
362 OPENSSL_free(groups);
363 if (noshared) {
364 BIO_puts(out, "\n");
365 return 1;
366 }
367 BIO_puts(out, "\nShared groups: ");
368 ngroups = SSL_get_shared_group(s, -1);
369 for (i = 0; i < ngroups; i++) {
370 if (i)
371 BIO_puts(out, ":");
372 nid = SSL_get_shared_group(s, i);
373 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
374 }
375 if (ngroups == 0)
376 BIO_puts(out, "NONE");
377 BIO_puts(out, "\n");
378 return 1;
379 }
380 #endif
381
ssl_print_tmp_key(BIO * out,SSL * s)382 int ssl_print_tmp_key(BIO *out, SSL *s)
383 {
384 EVP_PKEY *key;
385
386 if (!SSL_get_peer_tmp_key(s, &key))
387 return 1;
388 BIO_puts(out, "Server Temp Key: ");
389 switch (EVP_PKEY_get_id(key)) {
390 case EVP_PKEY_RSA:
391 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
392 break;
393
394 case EVP_PKEY_DH:
395 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_bits(key));
396 break;
397 #ifndef OPENSSL_NO_EC
398 case EVP_PKEY_EC:
399 {
400 char name[80];
401 size_t name_len;
402
403 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
404 name, sizeof(name), &name_len))
405 strcpy(name, "?");
406 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_get_bits(key));
407 }
408 break;
409 #endif
410 default:
411 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
412 EVP_PKEY_get_bits(key));
413 }
414 EVP_PKEY_free(key);
415 return 1;
416 }
417
bio_dump_callback(BIO * bio,int cmd,const char * argp,size_t len,int argi,long argl,int ret,size_t * processed)418 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
419 int argi, long argl, int ret, size_t *processed)
420 {
421 BIO *out;
422
423 out = (BIO *)BIO_get_callback_arg(bio);
424 if (out == NULL)
425 return ret;
426
427 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
428 if (ret > 0 && processed != NULL) {
429 BIO_printf(out, "read from %p [%p] (%zu bytes => %zu (0x%zX))\n",
430 (void *)bio, (void *)argp, len, *processed, *processed);
431 BIO_dump(out, argp, (int)*processed);
432 } else {
433 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
434 (void *)bio, (void *)argp, len, ret);
435 }
436 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
437 if (ret > 0 && processed != NULL) {
438 BIO_printf(out, "write to %p [%p] (%zu bytes => %zu (0x%zX))\n",
439 (void *)bio, (void *)argp, len, *processed, *processed);
440 BIO_dump(out, argp, (int)*processed);
441 } else {
442 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
443 (void *)bio, (void *)argp, len, ret);
444 }
445 }
446 return ret;
447 }
448
apps_ssl_info_callback(const SSL * s,int where,int ret)449 void apps_ssl_info_callback(const SSL *s, int where, int ret)
450 {
451 const char *str;
452 int w;
453
454 w = where & ~SSL_ST_MASK;
455
456 if (w & SSL_ST_CONNECT)
457 str = "SSL_connect";
458 else if (w & SSL_ST_ACCEPT)
459 str = "SSL_accept";
460 else
461 str = "undefined";
462
463 if (where & SSL_CB_LOOP) {
464 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
465 } else if (where & SSL_CB_ALERT) {
466 str = (where & SSL_CB_READ) ? "read" : "write";
467 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
468 str,
469 SSL_alert_type_string_long(ret),
470 SSL_alert_desc_string_long(ret));
471 } else if (where & SSL_CB_EXIT) {
472 if (ret == 0)
473 BIO_printf(bio_err, "%s:failed in %s\n",
474 str, SSL_state_string_long(s));
475 else if (ret < 0)
476 BIO_printf(bio_err, "%s:error in %s\n",
477 str, SSL_state_string_long(s));
478 }
479 }
480
481 static STRINT_PAIR ssl_versions[] = {
482 {"SSL 3.0", SSL3_VERSION},
483 {"TLS 1.0", TLS1_VERSION},
484 {"TLS 1.1", TLS1_1_VERSION},
485 {"TLS 1.2", TLS1_2_VERSION},
486 {"TLS 1.3", TLS1_3_VERSION},
487 {"DTLS 1.0", DTLS1_VERSION},
488 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
489 {NULL}
490 };
491
492 static STRINT_PAIR alert_types[] = {
493 {" close_notify", 0},
494 {" end_of_early_data", 1},
495 {" unexpected_message", 10},
496 {" bad_record_mac", 20},
497 {" decryption_failed", 21},
498 {" record_overflow", 22},
499 {" decompression_failure", 30},
500 {" handshake_failure", 40},
501 {" bad_certificate", 42},
502 {" unsupported_certificate", 43},
503 {" certificate_revoked", 44},
504 {" certificate_expired", 45},
505 {" certificate_unknown", 46},
506 {" illegal_parameter", 47},
507 {" unknown_ca", 48},
508 {" access_denied", 49},
509 {" decode_error", 50},
510 {" decrypt_error", 51},
511 {" export_restriction", 60},
512 {" protocol_version", 70},
513 {" insufficient_security", 71},
514 {" internal_error", 80},
515 {" inappropriate_fallback", 86},
516 {" user_canceled", 90},
517 {" no_renegotiation", 100},
518 {" missing_extension", 109},
519 {" unsupported_extension", 110},
520 {" certificate_unobtainable", 111},
521 {" unrecognized_name", 112},
522 {" bad_certificate_status_response", 113},
523 {" bad_certificate_hash_value", 114},
524 {" unknown_psk_identity", 115},
525 {" certificate_required", 116},
526 {NULL}
527 };
528
529 static STRINT_PAIR handshakes[] = {
530 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
531 {", ClientHello", SSL3_MT_CLIENT_HELLO},
532 {", ServerHello", SSL3_MT_SERVER_HELLO},
533 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
534 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
535 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
536 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
537 {", Certificate", SSL3_MT_CERTIFICATE},
538 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
539 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
540 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
541 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
542 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
543 {", Finished", SSL3_MT_FINISHED},
544 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
545 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
546 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
547 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
548 #ifndef OPENSSL_NO_NEXTPROTONEG
549 {", NextProto", SSL3_MT_NEXT_PROTO},
550 #endif
551 {", MessageHash", SSL3_MT_MESSAGE_HASH},
552 {NULL}
553 };
554
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)555 void msg_cb(int write_p, int version, int content_type, const void *buf,
556 size_t len, SSL *ssl, void *arg)
557 {
558 BIO *bio = arg;
559 const char *str_write_p = write_p ? ">>>" : "<<<";
560 char tmpbuf[128];
561 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
562 const unsigned char* bp = buf;
563
564 if (version == SSL3_VERSION ||
565 version == TLS1_VERSION ||
566 version == TLS1_1_VERSION ||
567 version == TLS1_2_VERSION ||
568 version == TLS1_3_VERSION ||
569 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
570 str_version = lookup(version, ssl_versions, "???");
571 switch (content_type) {
572 case SSL3_RT_CHANGE_CIPHER_SPEC:
573 /* type 20 */
574 str_content_type = ", ChangeCipherSpec";
575 break;
576 case SSL3_RT_ALERT:
577 /* type 21 */
578 str_content_type = ", Alert";
579 str_details1 = ", ???";
580 if (len == 2) {
581 switch (bp[0]) {
582 case 1:
583 str_details1 = ", warning";
584 break;
585 case 2:
586 str_details1 = ", fatal";
587 break;
588 }
589 str_details2 = lookup((int)bp[1], alert_types, " ???");
590 }
591 break;
592 case SSL3_RT_HANDSHAKE:
593 /* type 22 */
594 str_content_type = ", Handshake";
595 str_details1 = "???";
596 if (len > 0)
597 str_details1 = lookup((int)bp[0], handshakes, "???");
598 break;
599 case SSL3_RT_APPLICATION_DATA:
600 /* type 23 */
601 str_content_type = ", ApplicationData";
602 break;
603 case SSL3_RT_HEADER:
604 /* type 256 */
605 str_content_type = ", RecordHeader";
606 break;
607 case SSL3_RT_INNER_CONTENT_TYPE:
608 /* type 257 */
609 str_content_type = ", InnerContent";
610 break;
611 default:
612 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
613 str_content_type = tmpbuf;
614 }
615 } else {
616 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
617 str_version = tmpbuf;
618 }
619
620 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
621 str_content_type, (unsigned long)len, str_details1,
622 str_details2);
623
624 if (len > 0) {
625 size_t num, i;
626
627 BIO_printf(bio, " ");
628 num = len;
629 for (i = 0; i < num; i++) {
630 if (i % 16 == 0 && i > 0)
631 BIO_printf(bio, "\n ");
632 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
633 }
634 if (i < len)
635 BIO_printf(bio, " ...");
636 BIO_printf(bio, "\n");
637 }
638 (void)BIO_flush(bio);
639 }
640
641 static STRINT_PAIR tlsext_types[] = {
642 {"server name", TLSEXT_TYPE_server_name},
643 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
644 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
645 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
646 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
647 {"status request", TLSEXT_TYPE_status_request},
648 {"user mapping", TLSEXT_TYPE_user_mapping},
649 {"client authz", TLSEXT_TYPE_client_authz},
650 {"server authz", TLSEXT_TYPE_server_authz},
651 {"cert type", TLSEXT_TYPE_cert_type},
652 {"supported_groups", TLSEXT_TYPE_supported_groups},
653 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
654 {"SRP", TLSEXT_TYPE_srp},
655 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
656 {"use SRTP", TLSEXT_TYPE_use_srtp},
657 {"session ticket", TLSEXT_TYPE_session_ticket},
658 {"renegotiation info", TLSEXT_TYPE_renegotiate},
659 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
660 {"TLS padding", TLSEXT_TYPE_padding},
661 #ifdef TLSEXT_TYPE_next_proto_neg
662 {"next protocol", TLSEXT_TYPE_next_proto_neg},
663 #endif
664 #ifdef TLSEXT_TYPE_encrypt_then_mac
665 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
666 #endif
667 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
668 {"application layer protocol negotiation",
669 TLSEXT_TYPE_application_layer_protocol_negotiation},
670 #endif
671 #ifdef TLSEXT_TYPE_extended_master_secret
672 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
673 #endif
674 {"key share", TLSEXT_TYPE_key_share},
675 {"supported versions", TLSEXT_TYPE_supported_versions},
676 {"psk", TLSEXT_TYPE_psk},
677 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
678 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
679 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
680 {NULL}
681 };
682
683 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
684 static STRINT_PAIR signature_tls13_scheme_list[] = {
685 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
686 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
687 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
688 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
689 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
690 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
691 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
692 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
693 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
694 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
695 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
696 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
697 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
698 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
699 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
700 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
701 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
702 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
703 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
704 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
705 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
706 {NULL}
707 };
708
709 /* from rfc5246 7.4.1.4.1. */
710 static STRINT_PAIR signature_tls12_alg_list[] = {
711 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
712 {"RSA", TLSEXT_signature_rsa /* 1 */},
713 {"DSA", TLSEXT_signature_dsa /* 2 */},
714 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
715 {NULL}
716 };
717
718 /* from rfc5246 7.4.1.4.1. */
719 static STRINT_PAIR signature_tls12_hash_list[] = {
720 {"none", TLSEXT_hash_none /* 0 */},
721 {"MD5", TLSEXT_hash_md5 /* 1 */},
722 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
723 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
724 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
725 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
726 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
727 {NULL}
728 };
729
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)730 void tlsext_cb(SSL *s, int client_server, int type,
731 const unsigned char *data, int len, void *arg)
732 {
733 BIO *bio = arg;
734 const char *extname = lookup(type, tlsext_types, "unknown");
735
736 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
737 client_server ? "server" : "client", extname, type, len);
738 BIO_dump(bio, (const char *)data, len);
739 (void)BIO_flush(bio);
740 }
741
742 #ifndef OPENSSL_NO_SOCK
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)743 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
744 size_t *cookie_len)
745 {
746 unsigned char *buffer = NULL;
747 size_t length = 0;
748 unsigned short port;
749 BIO_ADDR *lpeer = NULL, *peer = NULL;
750 int res = 0;
751
752 /* Initialize a random secret */
753 if (!cookie_initialized) {
754 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
755 BIO_printf(bio_err, "error setting random cookie secret\n");
756 return 0;
757 }
758 cookie_initialized = 1;
759 }
760
761 if (SSL_is_dtls(ssl)) {
762 lpeer = peer = BIO_ADDR_new();
763 if (peer == NULL) {
764 BIO_printf(bio_err, "memory full\n");
765 return 0;
766 }
767
768 /* Read peer information */
769 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
770 } else {
771 peer = ourpeer;
772 }
773
774 /* Create buffer with peer's address and port */
775 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
776 BIO_printf(bio_err, "Failed getting peer address\n");
777 BIO_ADDR_free(lpeer);
778 return 0;
779 }
780 OPENSSL_assert(length != 0);
781 port = BIO_ADDR_rawport(peer);
782 length += sizeof(port);
783 buffer = app_malloc(length, "cookie generate buffer");
784
785 memcpy(buffer, &port, sizeof(port));
786 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
787
788 if (EVP_Q_mac(NULL, "HMAC", NULL, "SHA1", NULL,
789 cookie_secret, COOKIE_SECRET_LENGTH, buffer, length,
790 cookie, DTLS1_COOKIE_LENGTH, cookie_len) == NULL) {
791 BIO_printf(bio_err,
792 "Error calculating HMAC-SHA1 of buffer with secret\n");
793 goto end;
794 }
795 res = 1;
796 end:
797 OPENSSL_free(buffer);
798 BIO_ADDR_free(lpeer);
799
800 return res;
801 }
802
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)803 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
804 size_t cookie_len)
805 {
806 unsigned char result[EVP_MAX_MD_SIZE];
807 size_t resultlength;
808
809 /* Note: we check cookie_initialized because if it's not,
810 * it cannot be valid */
811 if (cookie_initialized
812 && generate_stateless_cookie_callback(ssl, result, &resultlength)
813 && cookie_len == resultlength
814 && memcmp(result, cookie, resultlength) == 0)
815 return 1;
816
817 return 0;
818 }
819
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)820 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
821 unsigned int *cookie_len)
822 {
823 size_t temp = 0;
824 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
825
826 if (res != 0)
827 *cookie_len = (unsigned int)temp;
828 return res;
829 }
830
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)831 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
832 unsigned int cookie_len)
833 {
834 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
835 }
836
837 #endif
838
839 /*
840 * Example of extended certificate handling. Where the standard support of
841 * one certificate per algorithm is not sufficient an application can decide
842 * which certificate(s) to use at runtime based on whatever criteria it deems
843 * appropriate.
844 */
845
846 /* Linked list of certificates, keys and chains */
847 struct ssl_excert_st {
848 int certform;
849 const char *certfile;
850 int keyform;
851 const char *keyfile;
852 const char *chainfile;
853 X509 *cert;
854 EVP_PKEY *key;
855 STACK_OF(X509) *chain;
856 int build_chain;
857 struct ssl_excert_st *next, *prev;
858 };
859
860 static STRINT_PAIR chain_flags[] = {
861 {"Overall Validity", CERT_PKEY_VALID},
862 {"Sign with EE key", CERT_PKEY_SIGN},
863 {"EE signature", CERT_PKEY_EE_SIGNATURE},
864 {"CA signature", CERT_PKEY_CA_SIGNATURE},
865 {"EE key parameters", CERT_PKEY_EE_PARAM},
866 {"CA key parameters", CERT_PKEY_CA_PARAM},
867 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
868 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
869 {"Certificate Type", CERT_PKEY_CERT_TYPE},
870 {NULL}
871 };
872
print_chain_flags(SSL * s,int flags)873 static void print_chain_flags(SSL *s, int flags)
874 {
875 STRINT_PAIR *pp;
876
877 for (pp = chain_flags; pp->name; ++pp)
878 BIO_printf(bio_err, "\t%s: %s\n",
879 pp->name,
880 (flags & pp->retval) ? "OK" : "NOT OK");
881 BIO_printf(bio_err, "\tSuite B: ");
882 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
883 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
884 else
885 BIO_printf(bio_err, "not tested\n");
886 }
887
888 /*
889 * Very basic selection callback: just use any certificate chain reported as
890 * valid. More sophisticated could prioritise according to local policy.
891 */
set_cert_cb(SSL * ssl,void * arg)892 static int set_cert_cb(SSL *ssl, void *arg)
893 {
894 int i, rv;
895 SSL_EXCERT *exc = arg;
896 #ifdef CERT_CB_TEST_RETRY
897 static int retry_cnt;
898 if (retry_cnt < 5) {
899 retry_cnt++;
900 BIO_printf(bio_err,
901 "Certificate callback retry test: count %d\n",
902 retry_cnt);
903 return -1;
904 }
905 #endif
906 SSL_certs_clear(ssl);
907
908 if (exc == NULL)
909 return 1;
910
911 /*
912 * Go to end of list and traverse backwards since we prepend newer
913 * entries this retains the original order.
914 */
915 while (exc->next != NULL)
916 exc = exc->next;
917
918 i = 0;
919
920 while (exc != NULL) {
921 i++;
922 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
923 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
924 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
925 get_nameopt());
926 BIO_puts(bio_err, "\n");
927 print_chain_flags(ssl, rv);
928 if (rv & CERT_PKEY_VALID) {
929 if (!SSL_use_certificate(ssl, exc->cert)
930 || !SSL_use_PrivateKey(ssl, exc->key)) {
931 return 0;
932 }
933 /*
934 * NB: we wouldn't normally do this as it is not efficient
935 * building chains on each connection better to cache the chain
936 * in advance.
937 */
938 if (exc->build_chain) {
939 if (!SSL_build_cert_chain(ssl, 0))
940 return 0;
941 } else if (exc->chain != NULL) {
942 if (!SSL_set1_chain(ssl, exc->chain))
943 return 0;
944 }
945 }
946 exc = exc->prev;
947 }
948 return 1;
949 }
950
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)951 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
952 {
953 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
954 }
955
ssl_excert_prepend(SSL_EXCERT ** pexc)956 static int ssl_excert_prepend(SSL_EXCERT **pexc)
957 {
958 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
959
960 memset(exc, 0, sizeof(*exc));
961
962 exc->next = *pexc;
963 *pexc = exc;
964
965 if (exc->next) {
966 exc->certform = exc->next->certform;
967 exc->keyform = exc->next->keyform;
968 exc->next->prev = exc;
969 } else {
970 exc->certform = FORMAT_PEM;
971 exc->keyform = FORMAT_PEM;
972 }
973 return 1;
974
975 }
976
ssl_excert_free(SSL_EXCERT * exc)977 void ssl_excert_free(SSL_EXCERT *exc)
978 {
979 SSL_EXCERT *curr;
980
981 if (exc == NULL)
982 return;
983 while (exc) {
984 X509_free(exc->cert);
985 EVP_PKEY_free(exc->key);
986 sk_X509_pop_free(exc->chain, X509_free);
987 curr = exc;
988 exc = exc->next;
989 OPENSSL_free(curr);
990 }
991 }
992
load_excert(SSL_EXCERT ** pexc)993 int load_excert(SSL_EXCERT **pexc)
994 {
995 SSL_EXCERT *exc = *pexc;
996 if (exc == NULL)
997 return 1;
998 /* If nothing in list, free and set to NULL */
999 if (exc->certfile == NULL && exc->next == NULL) {
1000 ssl_excert_free(exc);
1001 *pexc = NULL;
1002 return 1;
1003 }
1004 for (; exc; exc = exc->next) {
1005 if (exc->certfile == NULL) {
1006 BIO_printf(bio_err, "Missing filename\n");
1007 return 0;
1008 }
1009 exc->cert = load_cert(exc->certfile, exc->certform,
1010 "Server Certificate");
1011 if (exc->cert == NULL)
1012 return 0;
1013 if (exc->keyfile != NULL) {
1014 exc->key = load_key(exc->keyfile, exc->keyform,
1015 0, NULL, NULL, "server key");
1016 } else {
1017 exc->key = load_key(exc->certfile, exc->certform,
1018 0, NULL, NULL, "server key");
1019 }
1020 if (exc->key == NULL)
1021 return 0;
1022 if (exc->chainfile != NULL) {
1023 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1024 return 0;
1025 }
1026 }
1027 return 1;
1028 }
1029
1030 enum range { OPT_X_ENUM };
1031
args_excert(int opt,SSL_EXCERT ** pexc)1032 int args_excert(int opt, SSL_EXCERT **pexc)
1033 {
1034 SSL_EXCERT *exc = *pexc;
1035
1036 assert(opt > OPT_X__FIRST);
1037 assert(opt < OPT_X__LAST);
1038
1039 if (exc == NULL) {
1040 if (!ssl_excert_prepend(&exc)) {
1041 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1042 opt_getprog());
1043 goto err;
1044 }
1045 *pexc = exc;
1046 }
1047
1048 switch ((enum range)opt) {
1049 case OPT_X__FIRST:
1050 case OPT_X__LAST:
1051 return 0;
1052 case OPT_X_CERT:
1053 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1054 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1055 goto err;
1056 }
1057 *pexc = exc;
1058 exc->certfile = opt_arg();
1059 break;
1060 case OPT_X_KEY:
1061 if (exc->keyfile != NULL) {
1062 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1063 goto err;
1064 }
1065 exc->keyfile = opt_arg();
1066 break;
1067 case OPT_X_CHAIN:
1068 if (exc->chainfile != NULL) {
1069 BIO_printf(bio_err, "%s: Chain already specified\n",
1070 opt_getprog());
1071 goto err;
1072 }
1073 exc->chainfile = opt_arg();
1074 break;
1075 case OPT_X_CHAIN_BUILD:
1076 exc->build_chain = 1;
1077 break;
1078 case OPT_X_CERTFORM:
1079 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1080 return 0;
1081 break;
1082 case OPT_X_KEYFORM:
1083 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1084 return 0;
1085 break;
1086 }
1087 return 1;
1088
1089 err:
1090 ERR_print_errors(bio_err);
1091 ssl_excert_free(exc);
1092 *pexc = NULL;
1093 return 0;
1094 }
1095
print_raw_cipherlist(SSL * s)1096 static void print_raw_cipherlist(SSL *s)
1097 {
1098 const unsigned char *rlist;
1099 static const unsigned char scsv_id[] = { 0, 0xFF };
1100 size_t i, rlistlen, num;
1101 if (!SSL_is_server(s))
1102 return;
1103 num = SSL_get0_raw_cipherlist(s, NULL);
1104 OPENSSL_assert(num == 2);
1105 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1106 BIO_puts(bio_err, "Client cipher list: ");
1107 for (i = 0; i < rlistlen; i += num, rlist += num) {
1108 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1109 if (i)
1110 BIO_puts(bio_err, ":");
1111 if (c != NULL) {
1112 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1113 } else if (memcmp(rlist, scsv_id, num) == 0) {
1114 BIO_puts(bio_err, "SCSV");
1115 } else {
1116 size_t j;
1117 BIO_puts(bio_err, "0x");
1118 for (j = 0; j < num; j++)
1119 BIO_printf(bio_err, "%02X", rlist[j]);
1120 }
1121 }
1122 BIO_puts(bio_err, "\n");
1123 }
1124
1125 /*
1126 * Hex encoder for TLSA RRdata, not ':' delimited.
1127 */
hexencode(const unsigned char * data,size_t len)1128 static char *hexencode(const unsigned char *data, size_t len)
1129 {
1130 static const char *hex = "0123456789abcdef";
1131 char *out;
1132 char *cp;
1133 size_t outlen = 2 * len + 1;
1134 int ilen = (int) outlen;
1135
1136 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1137 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1138 opt_getprog(), len);
1139 exit(1);
1140 }
1141 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1142
1143 while (len-- > 0) {
1144 *cp++ = hex[(*data >> 4) & 0x0f];
1145 *cp++ = hex[*data++ & 0x0f];
1146 }
1147 *cp = '\0';
1148 return out;
1149 }
1150
print_verify_detail(SSL * s,BIO * bio)1151 void print_verify_detail(SSL *s, BIO *bio)
1152 {
1153 int mdpth;
1154 EVP_PKEY *mspki;
1155 long verify_err = SSL_get_verify_result(s);
1156
1157 if (verify_err == X509_V_OK) {
1158 const char *peername = SSL_get0_peername(s);
1159
1160 BIO_printf(bio, "Verification: OK\n");
1161 if (peername != NULL)
1162 BIO_printf(bio, "Verified peername: %s\n", peername);
1163 } else {
1164 const char *reason = X509_verify_cert_error_string(verify_err);
1165
1166 BIO_printf(bio, "Verification error: %s\n", reason);
1167 }
1168
1169 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1170 uint8_t usage, selector, mtype;
1171 const unsigned char *data = NULL;
1172 size_t dlen = 0;
1173 char *hexdata;
1174
1175 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1176
1177 /*
1178 * The TLSA data field can be quite long when it is a certificate,
1179 * public key or even a SHA2-512 digest. Because the initial octets of
1180 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1181 * and lengths, we show the last 12 bytes of the data instead, as these
1182 * are more likely to distinguish distinct TLSA records.
1183 */
1184 #define TLSA_TAIL_SIZE 12
1185 if (dlen > TLSA_TAIL_SIZE)
1186 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1187 else
1188 hexdata = hexencode(data, dlen);
1189 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1190 usage, selector, mtype,
1191 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1192 (mspki != NULL) ? "signed the certificate" :
1193 mdpth ? "matched TA certificate" : "matched EE certificate",
1194 mdpth);
1195 OPENSSL_free(hexdata);
1196 }
1197 }
1198
print_ssl_summary(SSL * s)1199 void print_ssl_summary(SSL *s)
1200 {
1201 const SSL_CIPHER *c;
1202 X509 *peer;
1203
1204 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1205 print_raw_cipherlist(s);
1206 c = SSL_get_current_cipher(s);
1207 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1208 do_print_sigalgs(bio_err, s, 0);
1209 peer = SSL_get0_peer_certificate(s);
1210 if (peer != NULL) {
1211 int nid;
1212
1213 BIO_puts(bio_err, "Peer certificate: ");
1214 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1215 0, get_nameopt());
1216 BIO_puts(bio_err, "\n");
1217 if (SSL_get_peer_signature_nid(s, &nid))
1218 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1219 if (SSL_get_peer_signature_type_nid(s, &nid))
1220 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1221 print_verify_detail(s, bio_err);
1222 } else {
1223 BIO_puts(bio_err, "No peer certificate\n");
1224 }
1225 #ifndef OPENSSL_NO_EC
1226 ssl_print_point_formats(bio_err, s);
1227 if (SSL_is_server(s))
1228 ssl_print_groups(bio_err, s, 1);
1229 else
1230 ssl_print_tmp_key(bio_err, s);
1231 #else
1232 if (!SSL_is_server(s))
1233 ssl_print_tmp_key(bio_err, s);
1234 #endif
1235 }
1236
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1237 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1238 SSL_CTX *ctx)
1239 {
1240 int i;
1241
1242 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1243 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1244 const char *flag = sk_OPENSSL_STRING_value(str, i);
1245 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1246
1247 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1248 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1249 flag, arg == NULL ? "<NULL>" : arg);
1250 ERR_print_errors(bio_err);
1251 return 0;
1252 }
1253 }
1254 if (!SSL_CONF_CTX_finish(cctx)) {
1255 BIO_puts(bio_err, "Error finishing context\n");
1256 ERR_print_errors(bio_err);
1257 return 0;
1258 }
1259 return 1;
1260 }
1261
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1262 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1263 {
1264 X509_CRL *crl;
1265 int i, ret = 1;
1266
1267 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1268 crl = sk_X509_CRL_value(crls, i);
1269 if (!X509_STORE_add_crl(st, crl))
1270 ret = 0;
1271 }
1272 return ret;
1273 }
1274
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1275 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1276 {
1277 X509_STORE *st;
1278 st = SSL_CTX_get_cert_store(ctx);
1279 add_crls_store(st, crls);
1280 if (crl_download)
1281 store_setup_crl_download(st);
1282 return 1;
1283 }
1284
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)1285 int ssl_load_stores(SSL_CTX *ctx,
1286 const char *vfyCApath, const char *vfyCAfile,
1287 const char *vfyCAstore,
1288 const char *chCApath, const char *chCAfile,
1289 const char *chCAstore,
1290 STACK_OF(X509_CRL) *crls, int crl_download)
1291 {
1292 X509_STORE *vfy = NULL, *ch = NULL;
1293 int rv = 0;
1294 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1295 vfy = X509_STORE_new();
1296 if (vfy == NULL)
1297 goto err;
1298 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1299 goto err;
1300 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1301 goto err;
1302 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1303 goto err;
1304 add_crls_store(vfy, crls);
1305 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1306 if (crl_download)
1307 store_setup_crl_download(vfy);
1308 }
1309 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1310 ch = X509_STORE_new();
1311 if (ch == NULL)
1312 goto err;
1313 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1314 goto err;
1315 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1316 goto err;
1317 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1318 goto err;
1319 SSL_CTX_set1_chain_cert_store(ctx, ch);
1320 }
1321 rv = 1;
1322 err:
1323 X509_STORE_free(vfy);
1324 X509_STORE_free(ch);
1325 return rv;
1326 }
1327
1328 /* Verbose print out of security callback */
1329
1330 typedef struct {
1331 BIO *out;
1332 int verbose;
1333 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1334 void *other, void *ex);
1335 } security_debug_ex;
1336
1337 static STRINT_PAIR callback_types[] = {
1338 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1339 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1340 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1341 #ifndef OPENSSL_NO_DH
1342 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1343 #endif
1344 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1345 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1346 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1347 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1348 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1349 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1350 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1351 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1352 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1353 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1354 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1355 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1356 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1357 {"SSL compression", SSL_SECOP_COMPRESSION},
1358 {"Session ticket", SSL_SECOP_TICKET},
1359 {NULL}
1360 };
1361
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1362 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1363 int op, int bits, int nid,
1364 void *other, void *ex)
1365 {
1366 security_debug_ex *sdb = ex;
1367 int rv, show_bits = 1, cert_md = 0;
1368 const char *nm;
1369 int show_nm;
1370 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1371 if (rv == 1 && sdb->verbose < 2)
1372 return 1;
1373 BIO_puts(sdb->out, "Security callback: ");
1374
1375 nm = lookup(op, callback_types, NULL);
1376 show_nm = nm != NULL;
1377 switch (op) {
1378 case SSL_SECOP_TICKET:
1379 case SSL_SECOP_COMPRESSION:
1380 show_bits = 0;
1381 show_nm = 0;
1382 break;
1383 case SSL_SECOP_VERSION:
1384 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1385 show_bits = 0;
1386 show_nm = 0;
1387 break;
1388 case SSL_SECOP_CA_MD:
1389 case SSL_SECOP_PEER_CA_MD:
1390 cert_md = 1;
1391 break;
1392 case SSL_SECOP_SIGALG_SUPPORTED:
1393 case SSL_SECOP_SIGALG_SHARED:
1394 case SSL_SECOP_SIGALG_CHECK:
1395 case SSL_SECOP_SIGALG_MASK:
1396 show_nm = 0;
1397 break;
1398 }
1399 if (show_nm)
1400 BIO_printf(sdb->out, "%s=", nm);
1401
1402 switch (op & SSL_SECOP_OTHER_TYPE) {
1403
1404 case SSL_SECOP_OTHER_CIPHER:
1405 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1406 break;
1407
1408 #ifndef OPENSSL_NO_EC
1409 case SSL_SECOP_OTHER_CURVE:
1410 {
1411 const char *cname;
1412 cname = EC_curve_nid2nist(nid);
1413 if (cname == NULL)
1414 cname = OBJ_nid2sn(nid);
1415 BIO_puts(sdb->out, cname);
1416 }
1417 break;
1418 #endif
1419 case SSL_SECOP_OTHER_CERT:
1420 {
1421 if (cert_md) {
1422 int sig_nid = X509_get_signature_nid(other);
1423 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1424 } else {
1425 EVP_PKEY *pkey = X509_get0_pubkey(other);
1426 const char *algname = "";
1427 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1428 &algname, EVP_PKEY_get0_asn1(pkey));
1429 BIO_printf(sdb->out, "%s, bits=%d",
1430 algname, EVP_PKEY_get_bits(pkey));
1431 }
1432 break;
1433 }
1434 case SSL_SECOP_OTHER_SIGALG:
1435 {
1436 const unsigned char *salg = other;
1437 const char *sname = NULL;
1438 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1439 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1440
1441 if (nm != NULL)
1442 BIO_printf(sdb->out, "%s", nm);
1443 else
1444 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1445
1446 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1447 if (sname != NULL) {
1448 BIO_printf(sdb->out, " scheme=%s", sname);
1449 } else {
1450 int alg_code = salg[1];
1451 int hash_code = salg[0];
1452 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1453 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1454
1455 if (alg_str != NULL && hash_str != NULL)
1456 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1457 else
1458 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1459 }
1460 }
1461
1462 }
1463
1464 if (show_bits)
1465 BIO_printf(sdb->out, ", security bits=%d", bits);
1466 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1467 return rv;
1468 }
1469
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1470 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1471 {
1472 static security_debug_ex sdb;
1473
1474 sdb.out = bio_err;
1475 sdb.verbose = verbose;
1476 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1477 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1478 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1479 }
1480
keylog_callback(const SSL * ssl,const char * line)1481 static void keylog_callback(const SSL *ssl, const char *line)
1482 {
1483 if (bio_keylog == NULL) {
1484 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1485 return;
1486 }
1487
1488 /*
1489 * There might be concurrent writers to the keylog file, so we must ensure
1490 * that the given line is written at once.
1491 */
1492 BIO_printf(bio_keylog, "%s\n", line);
1493 (void)BIO_flush(bio_keylog);
1494 }
1495
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1496 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1497 {
1498 /* Close any open files */
1499 BIO_free_all(bio_keylog);
1500 bio_keylog = NULL;
1501
1502 if (ctx == NULL || keylog_file == NULL) {
1503 /* Keylogging is disabled, OK. */
1504 return 0;
1505 }
1506
1507 /*
1508 * Append rather than write in order to allow concurrent modification.
1509 * Furthermore, this preserves existing keylog files which is useful when
1510 * the tool is run multiple times.
1511 */
1512 bio_keylog = BIO_new_file(keylog_file, "a");
1513 if (bio_keylog == NULL) {
1514 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1515 return 1;
1516 }
1517
1518 /* Write a header for seekable, empty files (this excludes pipes). */
1519 if (BIO_tell(bio_keylog) == 0) {
1520 BIO_puts(bio_keylog,
1521 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1522 (void)BIO_flush(bio_keylog);
1523 }
1524 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1525 return 0;
1526 }
1527
print_ca_names(BIO * bio,SSL * s)1528 void print_ca_names(BIO *bio, SSL *s)
1529 {
1530 const char *cs = SSL_is_server(s) ? "server" : "client";
1531 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1532 int i;
1533
1534 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1535 if (!SSL_is_server(s))
1536 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1537 return;
1538 }
1539
1540 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1541 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1542 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1543 BIO_write(bio, "\n", 1);
1544 }
1545 }
1546