2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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
10 /* callback functions used by s_client, s_server, and s_time */
13 #include <string.h> /* for memcpy() and strcmp() */
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>
23 # include <openssl/dh.h>
27 #define COOKIE_SECRET_LENGTH 16
29 VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 };
31 #ifndef OPENSSL_NO_SOCK
32 static unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
33 static int cookie_initialized = 0;
35 static BIO *bio_keylog = NULL;
37 static const char *lookup(int val, const STRINT_PAIR* list, const char* def)
39 for ( ; list->name; ++list)
40 if (list->retval == val)
45 int verify_callback(int ok, X509_STORE_CTX *ctx)
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);
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),
60 BIO_puts(bio_err, "\n");
62 BIO_puts(bio_err, "<no cert>\n");
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)
71 verify_args.error = err;
74 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
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),
82 BIO_puts(bio_err, "\n");
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");
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");
96 case X509_V_ERR_NO_EXPLICIT_POLICY:
97 if (!verify_args.quiet)
101 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
103 if (ok && !verify_args.quiet)
104 BIO_printf(bio_err, "verify return:%d\n", ok);
108 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
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",
115 ERR_print_errors(bio_err);
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",
123 ERR_print_errors(bio_err);
128 * If we are using DSA, we can copy the parameters from the private
133 * Now we know that a key and cert have been set against the SSL
136 if (!SSL_CTX_check_private_key(ctx)) {
138 "Private key does not match the certificate public key\n");
145 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
146 STACK_OF(X509) *chain, int build_chain)
148 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
151 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
152 BIO_printf(bio_err, "error setting certificate\n");
153 ERR_print_errors(bio_err);
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);
164 * Now we know that a key and cert have been set against the SSL context
166 if (!SSL_CTX_check_private_key(ctx)) {
168 "Private key does not match the certificate public key\n");
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);
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);
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},
197 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
199 const unsigned char *p;
201 int cert_type_num = SSL_get0_certificate_types(s, &p);
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);
212 BIO_puts(bio, cname);
214 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
219 static const char *get_sigtype(int nid)
225 case EVP_PKEY_RSA_PSS:
240 case NID_id_GostR3410_2001:
243 case NID_id_GostR3410_2012_256:
244 return "gost2012_256";
246 case NID_id_GostR3410_2012_512:
247 return "gost2012_512";
254 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
257 client = SSL_is_server(s) ? 0 : 1;
259 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
261 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
266 BIO_puts(out, "Shared ");
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;
276 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
279 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
282 sstr = get_sigtype(sign_nid);
284 BIO_printf(out, "%s", sstr);
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);
296 int ssl_print_sigalgs(BIO *out, SSL *s)
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));
310 #ifndef OPENSSL_NO_EC
311 int ssl_print_point_formats(BIO *out, SSL *s)
314 const char *pformats;
315 nformats = SSL_get0_ec_point_formats(s, &pformats);
318 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
319 for (i = 0; i < nformats; i++, pformats++) {
323 case TLSEXT_ECPOINTFORMAT_uncompressed:
324 BIO_puts(out, "uncompressed");
327 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
328 BIO_puts(out, "ansiX962_compressed_prime");
331 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
332 BIO_puts(out, "ansiX962_compressed_char2");
336 BIO_printf(out, "unknown(%d)", (int)*pformats);
345 int ssl_print_groups(BIO *out, SSL *s, int noshared)
347 int i, ngroups, *groups, nid;
349 ngroups = SSL_get1_groups(s, NULL);
352 groups = app_malloc(ngroups * sizeof(int), "groups to print");
353 SSL_get1_groups(s, groups);
355 BIO_puts(out, "Supported groups: ");
356 for (i = 0; i < ngroups; i++) {
360 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
362 OPENSSL_free(groups);
367 BIO_puts(out, "\nShared groups: ");
368 ngroups = SSL_get_shared_group(s, -1);
369 for (i = 0; i < ngroups; i++) {
372 nid = SSL_get_shared_group(s, i);
373 BIO_printf(out, "%s", SSL_group_to_name(s, nid));
376 BIO_puts(out, "NONE");
382 int ssl_print_tmp_key(BIO *out, SSL *s)
386 if (!SSL_get_peer_tmp_key(s, &key))
388 BIO_puts(out, "Server Temp Key: ");
389 switch (EVP_PKEY_id(key)) {
391 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
395 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
397 #ifndef OPENSSL_NO_EC
403 if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME,
404 name, sizeof(name), &name_len))
406 BIO_printf(out, "ECDH, %s, %d bits\n", name, EVP_PKEY_bits(key));
411 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(key)),
418 long bio_dump_callback(BIO *bio, int cmd, const char *argp,
419 int argi, long argl, long ret)
423 out = (BIO *)BIO_get_callback_arg(bio);
427 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
428 BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
429 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
430 BIO_dump(out, argp, (int)ret);
432 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
433 BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
434 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
435 BIO_dump(out, argp, (int)ret);
440 void apps_ssl_info_callback(const SSL *s, int where, int ret)
445 w = where & ~SSL_ST_MASK;
447 if (w & SSL_ST_CONNECT)
449 else if (w & SSL_ST_ACCEPT)
454 if (where & SSL_CB_LOOP) {
455 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
456 } else if (where & SSL_CB_ALERT) {
457 str = (where & SSL_CB_READ) ? "read" : "write";
458 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
460 SSL_alert_type_string_long(ret),
461 SSL_alert_desc_string_long(ret));
462 } else if (where & SSL_CB_EXIT) {
464 BIO_printf(bio_err, "%s:failed in %s\n",
465 str, SSL_state_string_long(s));
467 BIO_printf(bio_err, "%s:error in %s\n",
468 str, SSL_state_string_long(s));
472 static STRINT_PAIR ssl_versions[] = {
473 {"SSL 3.0", SSL3_VERSION},
474 {"TLS 1.0", TLS1_VERSION},
475 {"TLS 1.1", TLS1_1_VERSION},
476 {"TLS 1.2", TLS1_2_VERSION},
477 {"TLS 1.3", TLS1_3_VERSION},
478 {"DTLS 1.0", DTLS1_VERSION},
479 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
483 static STRINT_PAIR alert_types[] = {
484 {" close_notify", 0},
485 {" end_of_early_data", 1},
486 {" unexpected_message", 10},
487 {" bad_record_mac", 20},
488 {" decryption_failed", 21},
489 {" record_overflow", 22},
490 {" decompression_failure", 30},
491 {" handshake_failure", 40},
492 {" bad_certificate", 42},
493 {" unsupported_certificate", 43},
494 {" certificate_revoked", 44},
495 {" certificate_expired", 45},
496 {" certificate_unknown", 46},
497 {" illegal_parameter", 47},
499 {" access_denied", 49},
500 {" decode_error", 50},
501 {" decrypt_error", 51},
502 {" export_restriction", 60},
503 {" protocol_version", 70},
504 {" insufficient_security", 71},
505 {" internal_error", 80},
506 {" inappropriate_fallback", 86},
507 {" user_canceled", 90},
508 {" no_renegotiation", 100},
509 {" missing_extension", 109},
510 {" unsupported_extension", 110},
511 {" certificate_unobtainable", 111},
512 {" unrecognized_name", 112},
513 {" bad_certificate_status_response", 113},
514 {" bad_certificate_hash_value", 114},
515 {" unknown_psk_identity", 115},
516 {" certificate_required", 116},
520 static STRINT_PAIR handshakes[] = {
521 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
522 {", ClientHello", SSL3_MT_CLIENT_HELLO},
523 {", ServerHello", SSL3_MT_SERVER_HELLO},
524 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
525 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
526 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
527 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
528 {", Certificate", SSL3_MT_CERTIFICATE},
529 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
530 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
531 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
532 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
533 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
534 {", Finished", SSL3_MT_FINISHED},
535 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
536 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
537 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
538 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
539 #ifndef OPENSSL_NO_NEXTPROTONEG
540 {", NextProto", SSL3_MT_NEXT_PROTO},
542 {", MessageHash", SSL3_MT_MESSAGE_HASH},
546 void msg_cb(int write_p, int version, int content_type, const void *buf,
547 size_t len, SSL *ssl, void *arg)
550 const char *str_write_p = write_p ? ">>>" : "<<<";
552 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
553 const unsigned char* bp = buf;
555 if (version == SSL3_VERSION ||
556 version == TLS1_VERSION ||
557 version == TLS1_1_VERSION ||
558 version == TLS1_2_VERSION ||
559 version == TLS1_3_VERSION ||
560 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
561 str_version = lookup(version, ssl_versions, "???");
562 switch (content_type) {
563 case SSL3_RT_CHANGE_CIPHER_SPEC:
565 str_content_type = ", ChangeCipherSpec";
569 str_content_type = ", Alert";
570 str_details1 = ", ???";
574 str_details1 = ", warning";
577 str_details1 = ", fatal";
580 str_details2 = lookup((int)bp[1], alert_types, " ???");
583 case SSL3_RT_HANDSHAKE:
585 str_content_type = ", Handshake";
586 str_details1 = "???";
588 str_details1 = lookup((int)bp[0], handshakes, "???");
590 case SSL3_RT_APPLICATION_DATA:
592 str_content_type = ", ApplicationData";
596 str_content_type = ", RecordHeader";
598 case SSL3_RT_INNER_CONTENT_TYPE:
600 str_content_type = ", InnerContent";
603 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
604 str_content_type = tmpbuf;
607 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, "Not TLS data or unknown version (version=%d, content_type=%d)", version, content_type);
608 str_version = tmpbuf;
611 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
612 str_content_type, (unsigned long)len, str_details1,
618 BIO_printf(bio, " ");
620 for (i = 0; i < num; i++) {
621 if (i % 16 == 0 && i > 0)
622 BIO_printf(bio, "\n ");
623 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
626 BIO_printf(bio, " ...");
627 BIO_printf(bio, "\n");
629 (void)BIO_flush(bio);
632 static STRINT_PAIR tlsext_types[] = {
633 {"server name", TLSEXT_TYPE_server_name},
634 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
635 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
636 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
637 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
638 {"status request", TLSEXT_TYPE_status_request},
639 {"user mapping", TLSEXT_TYPE_user_mapping},
640 {"client authz", TLSEXT_TYPE_client_authz},
641 {"server authz", TLSEXT_TYPE_server_authz},
642 {"cert type", TLSEXT_TYPE_cert_type},
643 {"supported_groups", TLSEXT_TYPE_supported_groups},
644 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
645 {"SRP", TLSEXT_TYPE_srp},
646 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
647 {"use SRTP", TLSEXT_TYPE_use_srtp},
648 {"session ticket", TLSEXT_TYPE_session_ticket},
649 {"renegotiation info", TLSEXT_TYPE_renegotiate},
650 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
651 {"TLS padding", TLSEXT_TYPE_padding},
652 #ifdef TLSEXT_TYPE_next_proto_neg
653 {"next protocol", TLSEXT_TYPE_next_proto_neg},
655 #ifdef TLSEXT_TYPE_encrypt_then_mac
656 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
658 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
659 {"application layer protocol negotiation",
660 TLSEXT_TYPE_application_layer_protocol_negotiation},
662 #ifdef TLSEXT_TYPE_extended_master_secret
663 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
665 {"key share", TLSEXT_TYPE_key_share},
666 {"supported versions", TLSEXT_TYPE_supported_versions},
667 {"psk", TLSEXT_TYPE_psk},
668 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
669 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
670 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
674 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
675 static STRINT_PAIR signature_tls13_scheme_list[] = {
676 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
677 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
678 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
679 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
680 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
681 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
682 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
683 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
684 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
685 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
686 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
687 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
688 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
689 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
690 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
691 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
692 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
693 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
694 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
695 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
696 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
700 /* from rfc5246 7.4.1.4.1. */
701 static STRINT_PAIR signature_tls12_alg_list[] = {
702 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
703 {"RSA", TLSEXT_signature_rsa /* 1 */},
704 {"DSA", TLSEXT_signature_dsa /* 2 */},
705 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
709 /* from rfc5246 7.4.1.4.1. */
710 static STRINT_PAIR signature_tls12_hash_list[] = {
711 {"none", TLSEXT_hash_none /* 0 */},
712 {"MD5", TLSEXT_hash_md5 /* 1 */},
713 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
714 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
715 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
716 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
717 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
721 void tlsext_cb(SSL *s, int client_server, int type,
722 const unsigned char *data, int len, void *arg)
725 const char *extname = lookup(type, tlsext_types, "unknown");
727 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
728 client_server ? "server" : "client", extname, type, len);
729 BIO_dump(bio, (const char *)data, len);
730 (void)BIO_flush(bio);
733 #ifndef OPENSSL_NO_SOCK
734 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
735 unsigned int *cookie_len)
737 unsigned char *buffer = NULL;
740 BIO_ADDR *lpeer = NULL, *peer = NULL;
742 EVP_MAC *hmac = NULL;
743 EVP_MAC_CTX *ctx = NULL;
744 OSSL_PARAM params[2], *p = params;
747 /* Initialize a random secret */
748 if (!cookie_initialized) {
749 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
750 BIO_printf(bio_err, "error setting random cookie secret\n");
753 cookie_initialized = 1;
756 if (SSL_is_dtls(ssl)) {
757 lpeer = peer = BIO_ADDR_new();
759 BIO_printf(bio_err, "memory full\n");
763 /* Read peer information */
764 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
769 /* Create buffer with peer's address and port */
770 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
771 BIO_printf(bio_err, "Failed getting peer address\n");
772 BIO_ADDR_free(lpeer);
775 OPENSSL_assert(length != 0);
776 port = BIO_ADDR_rawport(peer);
777 length += sizeof(port);
778 buffer = app_malloc(length, "cookie generate buffer");
780 memcpy(buffer, &port, sizeof(port));
781 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
783 /* Calculate HMAC of buffer using the secret */
784 hmac = EVP_MAC_fetch(NULL, "HMAC", NULL);
786 BIO_printf(bio_err, "HMAC not found\n");
789 ctx = EVP_MAC_CTX_new(hmac);
791 BIO_printf(bio_err, "HMAC context allocation failed\n");
794 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST, "SHA1", 0);
795 *p = OSSL_PARAM_construct_end();
796 if (!EVP_MAC_init(ctx, cookie_secret, COOKIE_SECRET_LENGTH, params)) {
797 BIO_printf(bio_err, "HMAC context initialisation failed\n");
800 if (!EVP_MAC_update(ctx, buffer, length)) {
801 BIO_printf(bio_err, "HMAC context update failed\n");
804 if (!EVP_MAC_final(ctx, cookie, &mac_len, DTLS1_COOKIE_LENGTH)) {
805 BIO_printf(bio_err, "HMAC context final failed\n");
808 *cookie_len = (int)mac_len;
811 OPENSSL_free(buffer);
812 BIO_ADDR_free(lpeer);
817 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
818 unsigned int cookie_len)
820 unsigned char result[EVP_MAX_MD_SIZE];
821 unsigned int resultlength;
823 /* Note: we check cookie_initialized because if it's not,
824 * it cannot be valid */
825 if (cookie_initialized
826 && generate_cookie_callback(ssl, result, &resultlength)
827 && cookie_len == resultlength
828 && memcmp(result, cookie, resultlength) == 0)
834 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
837 unsigned int temp = 0;
839 int res = generate_cookie_callback(ssl, cookie, &temp);
844 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
847 return verify_cookie_callback(ssl, cookie, cookie_len);
853 * Example of extended certificate handling. Where the standard support of
854 * one certificate per algorithm is not sufficient an application can decide
855 * which certificate(s) to use at runtime based on whatever criteria it deems
859 /* Linked list of certificates, keys and chains */
860 struct ssl_excert_st {
862 const char *certfile;
865 const char *chainfile;
868 STACK_OF(X509) *chain;
870 struct ssl_excert_st *next, *prev;
873 static STRINT_PAIR chain_flags[] = {
874 {"Overall Validity", CERT_PKEY_VALID},
875 {"Sign with EE key", CERT_PKEY_SIGN},
876 {"EE signature", CERT_PKEY_EE_SIGNATURE},
877 {"CA signature", CERT_PKEY_CA_SIGNATURE},
878 {"EE key parameters", CERT_PKEY_EE_PARAM},
879 {"CA key parameters", CERT_PKEY_CA_PARAM},
880 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
881 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
882 {"Certificate Type", CERT_PKEY_CERT_TYPE},
886 static void print_chain_flags(SSL *s, int flags)
890 for (pp = chain_flags; pp->name; ++pp)
891 BIO_printf(bio_err, "\t%s: %s\n",
893 (flags & pp->retval) ? "OK" : "NOT OK");
894 BIO_printf(bio_err, "\tSuite B: ");
895 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
896 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
898 BIO_printf(bio_err, "not tested\n");
902 * Very basic selection callback: just use any certificate chain reported as
903 * valid. More sophisticated could prioritise according to local policy.
905 static int set_cert_cb(SSL *ssl, void *arg)
908 SSL_EXCERT *exc = arg;
909 #ifdef CERT_CB_TEST_RETRY
910 static int retry_cnt;
914 "Certificate callback retry test: count %d\n",
919 SSL_certs_clear(ssl);
925 * Go to end of list and traverse backwards since we prepend newer
926 * entries this retains the original order.
928 while (exc->next != NULL)
933 while (exc != NULL) {
935 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
936 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
937 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
939 BIO_puts(bio_err, "\n");
940 print_chain_flags(ssl, rv);
941 if (rv & CERT_PKEY_VALID) {
942 if (!SSL_use_certificate(ssl, exc->cert)
943 || !SSL_use_PrivateKey(ssl, exc->key)) {
947 * NB: we wouldn't normally do this as it is not efficient
948 * building chains on each connection better to cache the chain
951 if (exc->build_chain) {
952 if (!SSL_build_cert_chain(ssl, 0))
954 } else if (exc->chain != NULL) {
955 if (!SSL_set1_chain(ssl, exc->chain))
964 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
966 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
969 static int ssl_excert_prepend(SSL_EXCERT **pexc)
971 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
973 memset(exc, 0, sizeof(*exc));
979 exc->certform = exc->next->certform;
980 exc->keyform = exc->next->keyform;
981 exc->next->prev = exc;
983 exc->certform = FORMAT_PEM;
984 exc->keyform = FORMAT_PEM;
990 void ssl_excert_free(SSL_EXCERT *exc)
997 X509_free(exc->cert);
998 EVP_PKEY_free(exc->key);
999 sk_X509_pop_free(exc->chain, X509_free);
1006 int load_excert(SSL_EXCERT **pexc)
1008 SSL_EXCERT *exc = *pexc;
1011 /* If nothing in list, free and set to NULL */
1012 if (exc->certfile == NULL && exc->next == NULL) {
1013 ssl_excert_free(exc);
1017 for (; exc; exc = exc->next) {
1018 if (exc->certfile == NULL) {
1019 BIO_printf(bio_err, "Missing filename\n");
1022 exc->cert = load_cert(exc->certfile, "Server Certificate");
1023 if (exc->cert == NULL)
1025 if (exc->keyfile != NULL) {
1026 exc->key = load_key(exc->keyfile, exc->keyform,
1027 0, NULL, NULL, "server key");
1029 exc->key = load_key(exc->certfile, exc->certform,
1030 0, NULL, NULL, "server key");
1032 if (exc->key == NULL)
1034 if (exc->chainfile != NULL) {
1035 if (!load_certs(exc->chainfile, &exc->chain, NULL, "server chain"))
1042 enum range { OPT_X_ENUM };
1044 int args_excert(int opt, SSL_EXCERT **pexc)
1046 SSL_EXCERT *exc = *pexc;
1048 assert(opt > OPT_X__FIRST);
1049 assert(opt < OPT_X__LAST);
1052 if (!ssl_excert_prepend(&exc)) {
1053 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1060 switch ((enum range)opt) {
1065 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1066 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1070 exc->certfile = opt_arg();
1073 if (exc->keyfile != NULL) {
1074 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1077 exc->keyfile = opt_arg();
1080 if (exc->chainfile != NULL) {
1081 BIO_printf(bio_err, "%s: Chain already specified\n",
1085 exc->chainfile = opt_arg();
1087 case OPT_X_CHAIN_BUILD:
1088 exc->build_chain = 1;
1090 case OPT_X_CERTFORM:
1091 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1095 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1102 ERR_print_errors(bio_err);
1103 ssl_excert_free(exc);
1108 static void print_raw_cipherlist(SSL *s)
1110 const unsigned char *rlist;
1111 static const unsigned char scsv_id[] = { 0, 0xFF };
1112 size_t i, rlistlen, num;
1113 if (!SSL_is_server(s))
1115 num = SSL_get0_raw_cipherlist(s, NULL);
1116 OPENSSL_assert(num == 2);
1117 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1118 BIO_puts(bio_err, "Client cipher list: ");
1119 for (i = 0; i < rlistlen; i += num, rlist += num) {
1120 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1122 BIO_puts(bio_err, ":");
1124 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1125 } else if (memcmp(rlist, scsv_id, num) == 0) {
1126 BIO_puts(bio_err, "SCSV");
1129 BIO_puts(bio_err, "0x");
1130 for (j = 0; j < num; j++)
1131 BIO_printf(bio_err, "%02X", rlist[j]);
1134 BIO_puts(bio_err, "\n");
1138 * Hex encoder for TLSA RRdata, not ':' delimited.
1140 static char *hexencode(const unsigned char *data, size_t len)
1142 static const char *hex = "0123456789abcdef";
1145 size_t outlen = 2 * len + 1;
1146 int ilen = (int) outlen;
1148 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1149 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1150 opt_getprog(), len);
1153 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1156 *cp++ = hex[(*data >> 4) & 0x0f];
1157 *cp++ = hex[*data++ & 0x0f];
1163 void print_verify_detail(SSL *s, BIO *bio)
1167 long verify_err = SSL_get_verify_result(s);
1169 if (verify_err == X509_V_OK) {
1170 const char *peername = SSL_get0_peername(s);
1172 BIO_printf(bio, "Verification: OK\n");
1173 if (peername != NULL)
1174 BIO_printf(bio, "Verified peername: %s\n", peername);
1176 const char *reason = X509_verify_cert_error_string(verify_err);
1178 BIO_printf(bio, "Verification error: %s\n", reason);
1181 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1182 uint8_t usage, selector, mtype;
1183 const unsigned char *data = NULL;
1187 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1190 * The TLSA data field can be quite long when it is a certificate,
1191 * public key or even a SHA2-512 digest. Because the initial octets of
1192 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1193 * and lengths, we show the last 12 bytes of the data instead, as these
1194 * are more likely to distinguish distinct TLSA records.
1196 #define TLSA_TAIL_SIZE 12
1197 if (dlen > TLSA_TAIL_SIZE)
1198 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1200 hexdata = hexencode(data, dlen);
1201 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1202 usage, selector, mtype,
1203 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1204 (mspki != NULL) ? "signed the certificate" :
1205 mdpth ? "matched TA certificate" : "matched EE certificate",
1207 OPENSSL_free(hexdata);
1211 void print_ssl_summary(SSL *s)
1213 const SSL_CIPHER *c;
1216 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1217 print_raw_cipherlist(s);
1218 c = SSL_get_current_cipher(s);
1219 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1220 do_print_sigalgs(bio_err, s, 0);
1221 peer = SSL_get0_peer_certificate(s);
1225 BIO_puts(bio_err, "Peer certificate: ");
1226 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1228 BIO_puts(bio_err, "\n");
1229 if (SSL_get_peer_signature_nid(s, &nid))
1230 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1231 if (SSL_get_peer_signature_type_nid(s, &nid))
1232 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1233 print_verify_detail(s, bio_err);
1235 BIO_puts(bio_err, "No peer certificate\n");
1237 #ifndef OPENSSL_NO_EC
1238 ssl_print_point_formats(bio_err, s);
1239 if (SSL_is_server(s))
1240 ssl_print_groups(bio_err, s, 1);
1242 ssl_print_tmp_key(bio_err, s);
1244 if (!SSL_is_server(s))
1245 ssl_print_tmp_key(bio_err, s);
1249 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1254 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1255 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1256 const char *flag = sk_OPENSSL_STRING_value(str, i);
1257 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1258 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1260 BIO_printf(bio_err, "Error with command: \"%s %s\"\n",
1263 BIO_printf(bio_err, "Error with command: \"%s\"\n", flag);
1264 ERR_print_errors(bio_err);
1268 if (!SSL_CONF_CTX_finish(cctx)) {
1269 BIO_puts(bio_err, "Error finishing context\n");
1270 ERR_print_errors(bio_err);
1276 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1280 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1281 crl = sk_X509_CRL_value(crls, i);
1282 X509_STORE_add_crl(st, crl);
1287 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1290 st = SSL_CTX_get_cert_store(ctx);
1291 add_crls_store(st, crls);
1293 store_setup_crl_download(st);
1297 int ssl_load_stores(SSL_CTX *ctx,
1298 const char *vfyCApath, const char *vfyCAfile,
1299 const char *vfyCAstore,
1300 const char *chCApath, const char *chCAfile,
1301 const char *chCAstore,
1302 STACK_OF(X509_CRL) *crls, int crl_download)
1304 X509_STORE *vfy = NULL, *ch = NULL;
1306 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1307 vfy = X509_STORE_new();
1310 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1312 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1314 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1316 add_crls_store(vfy, crls);
1317 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1319 store_setup_crl_download(vfy);
1321 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1322 ch = X509_STORE_new();
1325 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1327 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1329 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1331 SSL_CTX_set1_chain_cert_store(ctx, ch);
1335 X509_STORE_free(vfy);
1336 X509_STORE_free(ch);
1340 /* Verbose print out of security callback */
1345 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1346 void *other, void *ex);
1347 } security_debug_ex;
1349 static STRINT_PAIR callback_types[] = {
1350 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1351 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1352 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1353 #ifndef OPENSSL_NO_DH
1354 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1356 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1357 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1358 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1359 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1360 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1361 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1362 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1363 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1364 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1365 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1366 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1367 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1368 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1369 {"SSL compression", SSL_SECOP_COMPRESSION},
1370 {"Session ticket", SSL_SECOP_TICKET},
1374 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1375 int op, int bits, int nid,
1376 void *other, void *ex)
1378 security_debug_ex *sdb = ex;
1379 int rv, show_bits = 1, cert_md = 0;
1382 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1383 if (rv == 1 && sdb->verbose < 2)
1385 BIO_puts(sdb->out, "Security callback: ");
1387 nm = lookup(op, callback_types, NULL);
1388 show_nm = nm != NULL;
1390 case SSL_SECOP_TICKET:
1391 case SSL_SECOP_COMPRESSION:
1395 case SSL_SECOP_VERSION:
1396 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1400 case SSL_SECOP_CA_MD:
1401 case SSL_SECOP_PEER_CA_MD:
1404 case SSL_SECOP_SIGALG_SUPPORTED:
1405 case SSL_SECOP_SIGALG_SHARED:
1406 case SSL_SECOP_SIGALG_CHECK:
1407 case SSL_SECOP_SIGALG_MASK:
1412 BIO_printf(sdb->out, "%s=", nm);
1414 switch (op & SSL_SECOP_OTHER_TYPE) {
1416 case SSL_SECOP_OTHER_CIPHER:
1417 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1420 #ifndef OPENSSL_NO_EC
1421 case SSL_SECOP_OTHER_CURVE:
1424 cname = EC_curve_nid2nist(nid);
1426 cname = OBJ_nid2sn(nid);
1427 BIO_puts(sdb->out, cname);
1431 case SSL_SECOP_OTHER_CERT:
1434 int sig_nid = X509_get_signature_nid(other);
1435 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1437 EVP_PKEY *pkey = X509_get0_pubkey(other);
1438 const char *algname = "";
1439 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1440 &algname, EVP_PKEY_get0_asn1(pkey));
1441 BIO_printf(sdb->out, "%s, bits=%d",
1442 algname, EVP_PKEY_bits(pkey));
1446 case SSL_SECOP_OTHER_SIGALG:
1448 const unsigned char *salg = other;
1449 const char *sname = NULL;
1450 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1451 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1454 BIO_printf(sdb->out, "%s", nm);
1456 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1458 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1459 if (sname != NULL) {
1460 BIO_printf(sdb->out, " scheme=%s", sname);
1462 int alg_code = salg[1];
1463 int hash_code = salg[0];
1464 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1465 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1467 if (alg_str != NULL && hash_str != NULL)
1468 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1470 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1477 BIO_printf(sdb->out, ", security bits=%d", bits);
1478 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1482 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1484 static security_debug_ex sdb;
1487 sdb.verbose = verbose;
1488 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1489 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1490 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1493 static void keylog_callback(const SSL *ssl, const char *line)
1495 if (bio_keylog == NULL) {
1496 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1501 * There might be concurrent writers to the keylog file, so we must ensure
1502 * that the given line is written at once.
1504 BIO_printf(bio_keylog, "%s\n", line);
1505 (void)BIO_flush(bio_keylog);
1508 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1510 /* Close any open files */
1511 BIO_free_all(bio_keylog);
1514 if (ctx == NULL || keylog_file == NULL) {
1515 /* Keylogging is disabled, OK. */
1520 * Append rather than write in order to allow concurrent modification.
1521 * Furthermore, this preserves existing keylog files which is useful when
1522 * the tool is run multiple times.
1524 bio_keylog = BIO_new_file(keylog_file, "a");
1525 if (bio_keylog == NULL) {
1526 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1530 /* Write a header for seekable, empty files (this excludes pipes). */
1531 if (BIO_tell(bio_keylog) == 0) {
1532 BIO_puts(bio_keylog,
1533 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1534 (void)BIO_flush(bio_keylog);
1536 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1540 void print_ca_names(BIO *bio, SSL *s)
1542 const char *cs = SSL_is_server(s) ? "server" : "client";
1543 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1546 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1547 if (!SSL_is_server(s))
1548 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1552 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1553 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1554 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1555 BIO_write(bio, "\n", 1);