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_get_id(key)) {
391 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_get_bits(key));
395 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_get_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_get_bits(key));
411 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_get_id(key)),
412 EVP_PKEY_get_bits(key));
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)
423 out = (BIO *)BIO_get_callback_arg(bio);
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);
433 BIO_printf(out, "read from %p [%p] (%zu bytes => %d)\n",
434 (void *)bio, (void *)argp, len, ret);
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);
442 BIO_printf(out, "write to %p [%p] (%zu bytes => %d)\n",
443 (void *)bio, (void *)argp, len, ret);
449 void apps_ssl_info_callback(const SSL *s, int where, int ret)
454 w = where & ~SSL_ST_MASK;
456 if (w & SSL_ST_CONNECT)
458 else if (w & SSL_ST_ACCEPT)
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",
469 SSL_alert_type_string_long(ret),
470 SSL_alert_desc_string_long(ret));
471 } else if (where & SSL_CB_EXIT) {
473 BIO_printf(bio_err, "%s:failed in %s\n",
474 str, SSL_state_string_long(s));
476 BIO_printf(bio_err, "%s:error in %s\n",
477 str, SSL_state_string_long(s));
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},
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},
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},
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},
551 {", MessageHash", SSL3_MT_MESSAGE_HASH},
555 void msg_cb(int write_p, int version, int content_type, const void *buf,
556 size_t len, SSL *ssl, void *arg)
559 const char *str_write_p = write_p ? ">>>" : "<<<";
561 const char *str_version, *str_content_type = "", *str_details1 = "", *str_details2 = "";
562 const unsigned char* bp = buf;
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:
574 str_content_type = ", ChangeCipherSpec";
578 str_content_type = ", Alert";
579 str_details1 = ", ???";
583 str_details1 = ", warning";
586 str_details1 = ", fatal";
589 str_details2 = lookup((int)bp[1], alert_types, " ???");
592 case SSL3_RT_HANDSHAKE:
594 str_content_type = ", Handshake";
595 str_details1 = "???";
597 str_details1 = lookup((int)bp[0], handshakes, "???");
599 case SSL3_RT_APPLICATION_DATA:
601 str_content_type = ", ApplicationData";
605 str_content_type = ", RecordHeader";
607 case SSL3_RT_INNER_CONTENT_TYPE:
609 str_content_type = ", InnerContent";
612 BIO_snprintf(tmpbuf, sizeof(tmpbuf)-1, ", Unknown (content_type=%d)", content_type);
613 str_content_type = tmpbuf;
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;
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,
627 BIO_printf(bio, " ");
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]);
635 BIO_printf(bio, " ...");
636 BIO_printf(bio, "\n");
638 (void)BIO_flush(bio);
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},
664 #ifdef TLSEXT_TYPE_encrypt_then_mac
665 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
667 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
668 {"application layer protocol negotiation",
669 TLSEXT_TYPE_application_layer_protocol_negotiation},
671 #ifdef TLSEXT_TYPE_extended_master_secret
672 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
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},
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 */},
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 */},
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 */},
730 void tlsext_cb(SSL *s, int client_server, int type,
731 const unsigned char *data, int len, void *arg)
734 const char *extname = lookup(type, tlsext_types, "unknown");
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);
742 #ifndef OPENSSL_NO_SOCK
743 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
746 unsigned char *buffer = NULL;
749 BIO_ADDR *lpeer = NULL, *peer = NULL;
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");
758 cookie_initialized = 1;
761 if (SSL_is_dtls(ssl)) {
762 lpeer = peer = BIO_ADDR_new();
764 BIO_printf(bio_err, "memory full\n");
768 /* Read peer information */
769 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
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);
780 OPENSSL_assert(length != 0);
781 port = BIO_ADDR_rawport(peer);
782 length += sizeof(port);
783 buffer = app_malloc(length, "cookie generate buffer");
785 memcpy(buffer, &port, sizeof(port));
786 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
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) {
792 "Error calculating HMAC-SHA1 of buffer with secret\n");
797 OPENSSL_free(buffer);
798 BIO_ADDR_free(lpeer);
803 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
806 unsigned char result[EVP_MAX_MD_SIZE];
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)
820 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
821 unsigned int *cookie_len)
824 int res = generate_stateless_cookie_callback(ssl, cookie, &temp);
826 *cookie_len = (unsigned int)temp;
830 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
831 unsigned int cookie_len)
833 return verify_stateless_cookie_callback(ssl, cookie, cookie_len);
839 * Example of extended certificate handling. Where the standard support of
840 * one certificate per algorithm is not sufficient an application can decide
841 * which certificate(s) to use at runtime based on whatever criteria it deems
845 /* Linked list of certificates, keys and chains */
846 struct ssl_excert_st {
848 const char *certfile;
851 const char *chainfile;
854 STACK_OF(X509) *chain;
856 struct ssl_excert_st *next, *prev;
859 static STRINT_PAIR chain_flags[] = {
860 {"Overall Validity", CERT_PKEY_VALID},
861 {"Sign with EE key", CERT_PKEY_SIGN},
862 {"EE signature", CERT_PKEY_EE_SIGNATURE},
863 {"CA signature", CERT_PKEY_CA_SIGNATURE},
864 {"EE key parameters", CERT_PKEY_EE_PARAM},
865 {"CA key parameters", CERT_PKEY_CA_PARAM},
866 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
867 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
868 {"Certificate Type", CERT_PKEY_CERT_TYPE},
872 static void print_chain_flags(SSL *s, int flags)
876 for (pp = chain_flags; pp->name; ++pp)
877 BIO_printf(bio_err, "\t%s: %s\n",
879 (flags & pp->retval) ? "OK" : "NOT OK");
880 BIO_printf(bio_err, "\tSuite B: ");
881 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
882 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
884 BIO_printf(bio_err, "not tested\n");
888 * Very basic selection callback: just use any certificate chain reported as
889 * valid. More sophisticated could prioritise according to local policy.
891 static int set_cert_cb(SSL *ssl, void *arg)
894 SSL_EXCERT *exc = arg;
895 #ifdef CERT_CB_TEST_RETRY
896 static int retry_cnt;
900 "Certificate callback retry test: count %d\n",
905 SSL_certs_clear(ssl);
911 * Go to end of list and traverse backwards since we prepend newer
912 * entries this retains the original order.
914 while (exc->next != NULL)
919 while (exc != NULL) {
921 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
922 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
923 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
925 BIO_puts(bio_err, "\n");
926 print_chain_flags(ssl, rv);
927 if (rv & CERT_PKEY_VALID) {
928 if (!SSL_use_certificate(ssl, exc->cert)
929 || !SSL_use_PrivateKey(ssl, exc->key)) {
933 * NB: we wouldn't normally do this as it is not efficient
934 * building chains on each connection better to cache the chain
937 if (exc->build_chain) {
938 if (!SSL_build_cert_chain(ssl, 0))
940 } else if (exc->chain != NULL) {
941 if (!SSL_set1_chain(ssl, exc->chain))
950 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
952 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
955 static int ssl_excert_prepend(SSL_EXCERT **pexc)
957 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
959 memset(exc, 0, sizeof(*exc));
965 exc->certform = exc->next->certform;
966 exc->keyform = exc->next->keyform;
967 exc->next->prev = exc;
969 exc->certform = FORMAT_PEM;
970 exc->keyform = FORMAT_PEM;
976 void ssl_excert_free(SSL_EXCERT *exc)
983 X509_free(exc->cert);
984 EVP_PKEY_free(exc->key);
985 sk_X509_pop_free(exc->chain, X509_free);
992 int load_excert(SSL_EXCERT **pexc)
994 SSL_EXCERT *exc = *pexc;
997 /* If nothing in list, free and set to NULL */
998 if (exc->certfile == NULL && exc->next == NULL) {
999 ssl_excert_free(exc);
1003 for (; exc; exc = exc->next) {
1004 if (exc->certfile == NULL) {
1005 BIO_printf(bio_err, "Missing filename\n");
1008 exc->cert = load_cert(exc->certfile, exc->certform,
1009 "Server Certificate");
1010 if (exc->cert == NULL)
1012 if (exc->keyfile != NULL) {
1013 exc->key = load_key(exc->keyfile, exc->keyform,
1014 0, NULL, NULL, "server key");
1016 exc->key = load_key(exc->certfile, exc->certform,
1017 0, NULL, NULL, "server key");
1019 if (exc->key == NULL)
1021 if (exc->chainfile != NULL) {
1022 if (!load_certs(exc->chainfile, 0, &exc->chain, NULL, "server chain"))
1029 enum range { OPT_X_ENUM };
1031 int args_excert(int opt, SSL_EXCERT **pexc)
1033 SSL_EXCERT *exc = *pexc;
1035 assert(opt > OPT_X__FIRST);
1036 assert(opt < OPT_X__LAST);
1039 if (!ssl_excert_prepend(&exc)) {
1040 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1047 switch ((enum range)opt) {
1052 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1053 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1057 exc->certfile = opt_arg();
1060 if (exc->keyfile != NULL) {
1061 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1064 exc->keyfile = opt_arg();
1067 if (exc->chainfile != NULL) {
1068 BIO_printf(bio_err, "%s: Chain already specified\n",
1072 exc->chainfile = opt_arg();
1074 case OPT_X_CHAIN_BUILD:
1075 exc->build_chain = 1;
1077 case OPT_X_CERTFORM:
1078 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->certform))
1082 if (!opt_format(opt_arg(), OPT_FMT_ANY, &exc->keyform))
1089 ERR_print_errors(bio_err);
1090 ssl_excert_free(exc);
1095 static void print_raw_cipherlist(SSL *s)
1097 const unsigned char *rlist;
1098 static const unsigned char scsv_id[] = { 0, 0xFF };
1099 size_t i, rlistlen, num;
1100 if (!SSL_is_server(s))
1102 num = SSL_get0_raw_cipherlist(s, NULL);
1103 OPENSSL_assert(num == 2);
1104 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1105 BIO_puts(bio_err, "Client cipher list: ");
1106 for (i = 0; i < rlistlen; i += num, rlist += num) {
1107 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1109 BIO_puts(bio_err, ":");
1111 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1112 } else if (memcmp(rlist, scsv_id, num) == 0) {
1113 BIO_puts(bio_err, "SCSV");
1116 BIO_puts(bio_err, "0x");
1117 for (j = 0; j < num; j++)
1118 BIO_printf(bio_err, "%02X", rlist[j]);
1121 BIO_puts(bio_err, "\n");
1125 * Hex encoder for TLSA RRdata, not ':' delimited.
1127 static char *hexencode(const unsigned char *data, size_t len)
1129 static const char *hex = "0123456789abcdef";
1132 size_t outlen = 2 * len + 1;
1133 int ilen = (int) outlen;
1135 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1136 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1137 opt_getprog(), len);
1140 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1143 *cp++ = hex[(*data >> 4) & 0x0f];
1144 *cp++ = hex[*data++ & 0x0f];
1150 void print_verify_detail(SSL *s, BIO *bio)
1154 long verify_err = SSL_get_verify_result(s);
1156 if (verify_err == X509_V_OK) {
1157 const char *peername = SSL_get0_peername(s);
1159 BIO_printf(bio, "Verification: OK\n");
1160 if (peername != NULL)
1161 BIO_printf(bio, "Verified peername: %s\n", peername);
1163 const char *reason = X509_verify_cert_error_string(verify_err);
1165 BIO_printf(bio, "Verification error: %s\n", reason);
1168 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1169 uint8_t usage, selector, mtype;
1170 const unsigned char *data = NULL;
1174 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1177 * The TLSA data field can be quite long when it is a certificate,
1178 * public key or even a SHA2-512 digest. Because the initial octets of
1179 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1180 * and lengths, we show the last 12 bytes of the data instead, as these
1181 * are more likely to distinguish distinct TLSA records.
1183 #define TLSA_TAIL_SIZE 12
1184 if (dlen > TLSA_TAIL_SIZE)
1185 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1187 hexdata = hexencode(data, dlen);
1188 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1189 usage, selector, mtype,
1190 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1191 (mspki != NULL) ? "signed the certificate" :
1192 mdpth ? "matched TA certificate" : "matched EE certificate",
1194 OPENSSL_free(hexdata);
1198 void print_ssl_summary(SSL *s)
1200 const SSL_CIPHER *c;
1203 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1204 print_raw_cipherlist(s);
1205 c = SSL_get_current_cipher(s);
1206 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1207 do_print_sigalgs(bio_err, s, 0);
1208 peer = SSL_get0_peer_certificate(s);
1212 BIO_puts(bio_err, "Peer certificate: ");
1213 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1215 BIO_puts(bio_err, "\n");
1216 if (SSL_get_peer_signature_nid(s, &nid))
1217 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1218 if (SSL_get_peer_signature_type_nid(s, &nid))
1219 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1220 print_verify_detail(s, bio_err);
1222 BIO_puts(bio_err, "No peer certificate\n");
1224 #ifndef OPENSSL_NO_EC
1225 ssl_print_point_formats(bio_err, s);
1226 if (SSL_is_server(s))
1227 ssl_print_groups(bio_err, s, 1);
1229 ssl_print_tmp_key(bio_err, s);
1231 if (!SSL_is_server(s))
1232 ssl_print_tmp_key(bio_err, s);
1236 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1241 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1242 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1243 const char *flag = sk_OPENSSL_STRING_value(str, i);
1244 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1246 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1247 BIO_printf(bio_err, "Call to SSL_CONF_cmd(%s, %s) failed\n",
1248 flag, arg == NULL ? "<NULL>" : arg);
1249 ERR_print_errors(bio_err);
1253 if (!SSL_CONF_CTX_finish(cctx)) {
1254 BIO_puts(bio_err, "Error finishing context\n");
1255 ERR_print_errors(bio_err);
1261 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1266 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1267 crl = sk_X509_CRL_value(crls, i);
1268 if (!X509_STORE_add_crl(st, crl))
1274 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1277 st = SSL_CTX_get_cert_store(ctx);
1278 add_crls_store(st, crls);
1280 store_setup_crl_download(st);
1284 int ssl_load_stores(SSL_CTX *ctx,
1285 const char *vfyCApath, const char *vfyCAfile,
1286 const char *vfyCAstore,
1287 const char *chCApath, const char *chCAfile,
1288 const char *chCAstore,
1289 STACK_OF(X509_CRL) *crls, int crl_download)
1291 X509_STORE *vfy = NULL, *ch = NULL;
1293 if (vfyCApath != NULL || vfyCAfile != NULL || vfyCAstore != NULL) {
1294 vfy = X509_STORE_new();
1297 if (vfyCAfile != NULL && !X509_STORE_load_file(vfy, vfyCAfile))
1299 if (vfyCApath != NULL && !X509_STORE_load_path(vfy, vfyCApath))
1301 if (vfyCAstore != NULL && !X509_STORE_load_store(vfy, vfyCAstore))
1303 add_crls_store(vfy, crls);
1304 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1306 store_setup_crl_download(vfy);
1308 if (chCApath != NULL || chCAfile != NULL || chCAstore != NULL) {
1309 ch = X509_STORE_new();
1312 if (chCAfile != NULL && !X509_STORE_load_file(ch, chCAfile))
1314 if (chCApath != NULL && !X509_STORE_load_path(ch, chCApath))
1316 if (chCAstore != NULL && !X509_STORE_load_store(ch, chCAstore))
1318 SSL_CTX_set1_chain_cert_store(ctx, ch);
1322 X509_STORE_free(vfy);
1323 X509_STORE_free(ch);
1327 /* Verbose print out of security callback */
1332 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1333 void *other, void *ex);
1334 } security_debug_ex;
1336 static STRINT_PAIR callback_types[] = {
1337 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1338 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1339 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1340 #ifndef OPENSSL_NO_DH
1341 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1343 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1344 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1345 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1346 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1347 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1348 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1349 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1350 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1351 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1352 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1353 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1354 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1355 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1356 {"SSL compression", SSL_SECOP_COMPRESSION},
1357 {"Session ticket", SSL_SECOP_TICKET},
1361 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1362 int op, int bits, int nid,
1363 void *other, void *ex)
1365 security_debug_ex *sdb = ex;
1366 int rv, show_bits = 1, cert_md = 0;
1369 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1370 if (rv == 1 && sdb->verbose < 2)
1372 BIO_puts(sdb->out, "Security callback: ");
1374 nm = lookup(op, callback_types, NULL);
1375 show_nm = nm != NULL;
1377 case SSL_SECOP_TICKET:
1378 case SSL_SECOP_COMPRESSION:
1382 case SSL_SECOP_VERSION:
1383 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1387 case SSL_SECOP_CA_MD:
1388 case SSL_SECOP_PEER_CA_MD:
1391 case SSL_SECOP_SIGALG_SUPPORTED:
1392 case SSL_SECOP_SIGALG_SHARED:
1393 case SSL_SECOP_SIGALG_CHECK:
1394 case SSL_SECOP_SIGALG_MASK:
1399 BIO_printf(sdb->out, "%s=", nm);
1401 switch (op & SSL_SECOP_OTHER_TYPE) {
1403 case SSL_SECOP_OTHER_CIPHER:
1404 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1407 #ifndef OPENSSL_NO_EC
1408 case SSL_SECOP_OTHER_CURVE:
1411 cname = EC_curve_nid2nist(nid);
1413 cname = OBJ_nid2sn(nid);
1414 BIO_puts(sdb->out, cname);
1418 case SSL_SECOP_OTHER_CERT:
1421 int sig_nid = X509_get_signature_nid(other);
1422 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1424 EVP_PKEY *pkey = X509_get0_pubkey(other);
1425 const char *algname = "";
1426 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1427 &algname, EVP_PKEY_get0_asn1(pkey));
1428 BIO_printf(sdb->out, "%s, bits=%d",
1429 algname, EVP_PKEY_get_bits(pkey));
1433 case SSL_SECOP_OTHER_SIGALG:
1435 const unsigned char *salg = other;
1436 const char *sname = NULL;
1437 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1438 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1441 BIO_printf(sdb->out, "%s", nm);
1443 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1445 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1446 if (sname != NULL) {
1447 BIO_printf(sdb->out, " scheme=%s", sname);
1449 int alg_code = salg[1];
1450 int hash_code = salg[0];
1451 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1452 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1454 if (alg_str != NULL && hash_str != NULL)
1455 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1457 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1464 BIO_printf(sdb->out, ", security bits=%d", bits);
1465 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1469 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1471 static security_debug_ex sdb;
1474 sdb.verbose = verbose;
1475 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1476 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1477 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1480 static void keylog_callback(const SSL *ssl, const char *line)
1482 if (bio_keylog == NULL) {
1483 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1488 * There might be concurrent writers to the keylog file, so we must ensure
1489 * that the given line is written at once.
1491 BIO_printf(bio_keylog, "%s\n", line);
1492 (void)BIO_flush(bio_keylog);
1495 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1497 /* Close any open files */
1498 BIO_free_all(bio_keylog);
1501 if (ctx == NULL || keylog_file == NULL) {
1502 /* Keylogging is disabled, OK. */
1507 * Append rather than write in order to allow concurrent modification.
1508 * Furthermore, this preserves existing keylog files which is useful when
1509 * the tool is run multiple times.
1511 bio_keylog = BIO_new_file(keylog_file, "a");
1512 if (bio_keylog == NULL) {
1513 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1517 /* Write a header for seekable, empty files (this excludes pipes). */
1518 if (BIO_tell(bio_keylog) == 0) {
1519 BIO_puts(bio_keylog,
1520 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1521 (void)BIO_flush(bio_keylog);
1523 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1527 void print_ca_names(BIO *bio, SSL *s)
1529 const char *cs = SSL_is_server(s) ? "server" : "client";
1530 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1533 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1534 if (!SSL_is_server(s))
1535 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1539 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1540 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1541 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1542 BIO_write(bio, "\n", 1);