1 /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
119 #include <openssl/err.h>
120 #include <openssl/rand.h>
121 #include <openssl/x509.h>
122 #include <openssl/ssl.h>
123 #include <openssl/bn.h>
124 #ifndef OPENSSL_NO_DH
125 # include <openssl/dh.h>
129 #define COOKIE_SECRET_LENGTH 16
131 int verify_depth = 0;
132 int verify_quiet = 0;
133 int verify_error = X509_V_OK;
134 int verify_return_error = 0;
135 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
136 int cookie_initialized = 0;
138 int verify_callback(int ok, X509_STORE_CTX *ctx)
143 err_cert = X509_STORE_CTX_get_current_cert(ctx);
144 err = X509_STORE_CTX_get_error(ctx);
145 depth = X509_STORE_CTX_get_error_depth(ctx);
147 if (!verify_quiet || !ok) {
148 BIO_printf(bio_err, "depth=%d ", depth);
150 X509_NAME_print_ex(bio_err,
151 X509_get_subject_name(err_cert),
153 BIO_puts(bio_err, "\n");
155 BIO_puts(bio_err, "<no cert>\n");
158 BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
159 X509_verify_cert_error_string(err));
160 if (verify_depth >= depth) {
161 if (!verify_return_error)
163 verify_error = X509_V_OK;
166 verify_error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
170 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
171 BIO_puts(bio_err, "issuer= ");
172 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
174 BIO_puts(bio_err, "\n");
176 case X509_V_ERR_CERT_NOT_YET_VALID:
177 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
178 BIO_printf(bio_err, "notBefore=");
179 ASN1_TIME_print(bio_err, X509_get_notBefore(err_cert));
180 BIO_printf(bio_err, "\n");
182 case X509_V_ERR_CERT_HAS_EXPIRED:
183 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
184 BIO_printf(bio_err, "notAfter=");
185 ASN1_TIME_print(bio_err, X509_get_notAfter(err_cert));
186 BIO_printf(bio_err, "\n");
188 case X509_V_ERR_NO_EXPLICIT_POLICY:
190 policies_print(bio_err, ctx);
193 if (err == X509_V_OK && ok == 2 && !verify_quiet)
194 policies_print(bio_err, ctx);
195 if (ok && !verify_quiet)
196 BIO_printf(bio_err, "verify return:%d\n", ok);
200 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
202 if (cert_file != NULL) {
208 if (SSL_CTX_use_certificate_file(ctx, cert_file,
209 SSL_FILETYPE_PEM) <= 0) {
210 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
212 ERR_print_errors(bio_err);
215 if (key_file == NULL)
216 key_file = cert_file;
217 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
218 BIO_printf(bio_err, "unable to get private key from '%s'\n",
220 ERR_print_errors(bio_err);
225 In theory this is no longer needed
227 x509=SSL_get_certificate(ssl);
231 pktmp = X509_get_pubkey(x509);
232 EVP_PKEY_copy_parameters(pktmp,
233 SSL_get_privatekey(ssl));
234 EVP_PKEY_free(pktmp);
240 * If we are using DSA, we can copy the parameters from the private
245 * Now we know that a key and cert have been set against the SSL
248 if (!SSL_CTX_check_private_key(ctx)) {
250 "Private key does not match the certificate public key\n");
257 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
258 STACK_OF(X509) *chain, int build_chain)
260 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
263 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
264 BIO_printf(bio_err, "error setting certificate\n");
265 ERR_print_errors(bio_err);
269 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
270 BIO_printf(bio_err, "error setting private key\n");
271 ERR_print_errors(bio_err);
276 * Now we know that a key and cert have been set against the SSL context
278 if (!SSL_CTX_check_private_key(ctx)) {
280 "Private key does not match the certificate public key\n");
283 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
284 BIO_printf(bio_err, "error setting certificate chain\n");
285 ERR_print_errors(bio_err);
288 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
289 BIO_printf(bio_err, "error building certificate chain\n");
290 ERR_print_errors(bio_err);
296 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
298 const unsigned char *p;
300 int cert_type_num = SSL_get0_certificate_types(s, &p);
303 BIO_puts(bio, "Client Certificate Types: ");
304 for (i = 0; i < cert_type_num; i++) {
305 unsigned char cert_type = p[i];
308 case TLS_CT_RSA_SIGN:
312 case TLS_CT_DSS_SIGN:
316 case TLS_CT_RSA_FIXED_DH:
317 cname = "RSA fixed DH";
320 case TLS_CT_DSS_FIXED_DH:
321 cname = "DSS fixed DH";
324 case TLS_CT_ECDSA_SIGN:
325 cname = "ECDSA sign";
328 case TLS_CT_RSA_FIXED_ECDH:
329 cname = "RSA fixed ECDH";
332 case TLS_CT_ECDSA_FIXED_ECDH:
333 cname = "ECDSA fixed ECDH";
336 case TLS_CT_GOST94_SIGN:
337 cname = "GOST94 Sign";
340 case TLS_CT_GOST01_SIGN:
341 cname = "GOST01 Sign";
352 BIO_puts(bio, cname);
354 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
359 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
362 client = SSL_is_server(s) ? 0 : 1;
364 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
366 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
371 BIO_puts(out, "Shared ");
374 BIO_puts(out, "Requested ");
375 BIO_puts(out, "Signature Algorithms: ");
376 for (i = 0; i < nsig; i++) {
377 int hash_nid, sign_nid;
378 unsigned char rhash, rsign;
379 const char *sstr = NULL;
381 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
384 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
387 if (sign_nid == EVP_PKEY_RSA)
389 else if (sign_nid == EVP_PKEY_DSA)
391 else if (sign_nid == EVP_PKEY_EC)
394 BIO_printf(out, "%s+", sstr);
396 BIO_printf(out, "0x%02X+", (int)rsign);
397 if (hash_nid != NID_undef)
398 BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
400 BIO_printf(out, "0x%02X", (int)rhash);
406 int ssl_print_sigalgs(BIO *out, SSL *s)
409 if (!SSL_is_server(s))
410 ssl_print_client_cert_types(out, s);
411 do_print_sigalgs(out, s, 0);
412 do_print_sigalgs(out, s, 1);
413 if (SSL_get_peer_signature_nid(s, &mdnid))
414 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
418 #ifndef OPENSSL_NO_EC
419 int ssl_print_point_formats(BIO *out, SSL *s)
422 const char *pformats;
423 nformats = SSL_get0_ec_point_formats(s, &pformats);
426 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
427 for (i = 0; i < nformats; i++, pformats++) {
431 case TLSEXT_ECPOINTFORMAT_uncompressed:
432 BIO_puts(out, "uncompressed");
435 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
436 BIO_puts(out, "ansiX962_compressed_prime");
439 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
440 BIO_puts(out, "ansiX962_compressed_char2");
444 BIO_printf(out, "unknown(%d)", (int)*pformats);
450 BIO_puts(out, "NONE");
455 int ssl_print_curves(BIO *out, SSL *s, int noshared)
457 int i, ncurves, *curves, nid;
459 ncurves = SSL_get1_curves(s, NULL);
462 curves = OPENSSL_malloc(ncurves * sizeof(int));
464 BIO_puts(out, "Malloc error getting supported curves\n");
467 SSL_get1_curves(s, curves);
470 BIO_puts(out, "Supported Elliptic Curves: ");
471 for (i = 0; i < ncurves; i++) {
475 /* If unrecognised print out hex version */
476 if (nid & TLSEXT_nid_unknown)
477 BIO_printf(out, "0x%04X", nid & 0xFFFF);
479 /* Use NIST name for curve if it exists */
480 cname = EC_curve_nid2nist(nid);
482 cname = OBJ_nid2sn(nid);
483 BIO_printf(out, "%s", cname);
487 BIO_puts(out, "NONE");
488 OPENSSL_free(curves);
493 BIO_puts(out, "\nShared Elliptic curves: ");
494 ncurves = SSL_get_shared_curve(s, -1);
495 for (i = 0; i < ncurves; i++) {
498 nid = SSL_get_shared_curve(s, i);
499 cname = EC_curve_nid2nist(nid);
501 cname = OBJ_nid2sn(nid);
502 BIO_printf(out, "%s", cname);
505 BIO_puts(out, "NONE");
510 int ssl_print_tmp_key(BIO *out, SSL *s)
513 if (!SSL_get_server_tmp_key(s, &key))
515 BIO_puts(out, "Server Temp Key: ");
516 switch (EVP_PKEY_id(key)) {
518 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
522 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
524 #ifndef OPENSSL_NO_ECDH
527 EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
530 nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
532 cname = EC_curve_nid2nist(nid);
534 cname = OBJ_nid2sn(nid);
535 BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(key));
543 long bio_dump_callback(BIO *bio, int cmd, const char *argp,
544 int argi, long argl, long ret)
548 out = (BIO *)BIO_get_callback_arg(bio);
552 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
553 BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
554 (void *)bio, argp, (unsigned long)argi, ret, ret);
555 BIO_dump(out, argp, (int)ret);
557 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
558 BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
559 (void *)bio, argp, (unsigned long)argi, ret, ret);
560 BIO_dump(out, argp, (int)ret);
565 void apps_ssl_info_callback(const SSL *s, int where, int ret)
570 w = where & ~SSL_ST_MASK;
572 if (w & SSL_ST_CONNECT)
574 else if (w & SSL_ST_ACCEPT)
579 if (where & SSL_CB_LOOP) {
580 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
581 } else if (where & SSL_CB_ALERT) {
582 str = (where & SSL_CB_READ) ? "read" : "write";
583 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
585 SSL_alert_type_string_long(ret),
586 SSL_alert_desc_string_long(ret));
587 } else if (where & SSL_CB_EXIT) {
589 BIO_printf(bio_err, "%s:failed in %s\n",
590 str, SSL_state_string_long(s));
592 BIO_printf(bio_err, "%s:error in %s\n",
593 str, SSL_state_string_long(s));
598 static const char *ssl_version_str(int version)
612 return "DTLS 1.0 (bad)";
618 void msg_cb(int write_p, int version, int content_type, const void *buf,
619 size_t len, SSL *ssl, void *arg)
622 const char *str_write_p, *str_version, *str_content_type =
623 "", *str_details1 = "", *str_details2 = "";
625 str_write_p = write_p ? ">>>" : "<<<";
627 str_version = ssl_version_str(version);
629 if (version == SSL3_VERSION ||
630 version == TLS1_VERSION ||
631 version == TLS1_1_VERSION ||
632 version == TLS1_2_VERSION ||
633 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
634 switch (content_type) {
636 str_content_type = "ChangeCipherSpec";
639 str_content_type = "Alert";
642 str_content_type = "Handshake";
646 if (content_type == 21) { /* Alert */
647 str_details1 = ", ???";
650 switch (((const unsigned char *)buf)[0]) {
652 str_details1 = ", warning";
655 str_details1 = ", fatal";
659 str_details2 = " ???";
660 switch (((const unsigned char *)buf)[1]) {
662 str_details2 = " close_notify";
665 str_details2 = " unexpected_message";
668 str_details2 = " bad_record_mac";
671 str_details2 = " decryption_failed";
674 str_details2 = " record_overflow";
677 str_details2 = " decompression_failure";
680 str_details2 = " handshake_failure";
683 str_details2 = " bad_certificate";
686 str_details2 = " unsupported_certificate";
689 str_details2 = " certificate_revoked";
692 str_details2 = " certificate_expired";
695 str_details2 = " certificate_unknown";
698 str_details2 = " illegal_parameter";
701 str_details2 = " unknown_ca";
704 str_details2 = " access_denied";
707 str_details2 = " decode_error";
710 str_details2 = " decrypt_error";
713 str_details2 = " export_restriction";
716 str_details2 = " protocol_version";
719 str_details2 = " insufficient_security";
722 str_details2 = " internal_error";
725 str_details2 = " user_canceled";
728 str_details2 = " no_renegotiation";
731 str_details2 = " unsupported_extension";
734 str_details2 = " certificate_unobtainable";
737 str_details2 = " unrecognized_name";
740 str_details2 = " bad_certificate_status_response";
743 str_details2 = " bad_certificate_hash_value";
746 str_details2 = " unknown_psk_identity";
752 if (content_type == 22) { /* Handshake */
753 str_details1 = "???";
756 switch (((const unsigned char *)buf)[0]) {
758 str_details1 = ", HelloRequest";
761 str_details1 = ", ClientHello";
764 str_details1 = ", ServerHello";
767 str_details1 = ", HelloVerifyRequest";
770 str_details1 = ", Certificate";
773 str_details1 = ", ServerKeyExchange";
776 str_details1 = ", CertificateRequest";
779 str_details1 = ", ServerHelloDone";
782 str_details1 = ", CertificateVerify";
785 str_details1 = ", ClientKeyExchange";
788 str_details1 = ", Finished";
793 #ifndef OPENSSL_NO_HEARTBEATS
794 if (content_type == 24) { /* Heartbeat */
795 str_details1 = ", Heartbeat";
798 switch (((const unsigned char *)buf)[0]) {
800 str_details1 = ", HeartbeatRequest";
803 str_details1 = ", HeartbeatResponse";
811 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
812 str_content_type, (unsigned long)len, str_details1,
818 BIO_printf(bio, " ");
820 for (i = 0; i < num; i++) {
821 if (i % 16 == 0 && i > 0)
822 BIO_printf(bio, "\n ");
823 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
826 BIO_printf(bio, " ...");
827 BIO_printf(bio, "\n");
829 (void)BIO_flush(bio);
832 void tlsext_cb(SSL *s, int client_server, int type,
833 unsigned char *data, int len, void *arg)
839 case TLSEXT_TYPE_server_name:
840 extname = "server name";
843 case TLSEXT_TYPE_max_fragment_length:
844 extname = "max fragment length";
847 case TLSEXT_TYPE_client_certificate_url:
848 extname = "client certificate URL";
851 case TLSEXT_TYPE_trusted_ca_keys:
852 extname = "trusted CA keys";
855 case TLSEXT_TYPE_truncated_hmac:
856 extname = "truncated HMAC";
859 case TLSEXT_TYPE_status_request:
860 extname = "status request";
863 case TLSEXT_TYPE_user_mapping:
864 extname = "user mapping";
867 case TLSEXT_TYPE_client_authz:
868 extname = "client authz";
871 case TLSEXT_TYPE_server_authz:
872 extname = "server authz";
875 case TLSEXT_TYPE_cert_type:
876 extname = "cert type";
879 case TLSEXT_TYPE_elliptic_curves:
880 extname = "elliptic curves";
883 case TLSEXT_TYPE_ec_point_formats:
884 extname = "EC point formats";
887 case TLSEXT_TYPE_srp:
891 case TLSEXT_TYPE_signature_algorithms:
892 extname = "signature algorithms";
895 case TLSEXT_TYPE_use_srtp:
896 extname = "use SRTP";
899 case TLSEXT_TYPE_heartbeat:
900 extname = "heartbeat";
903 case TLSEXT_TYPE_session_ticket:
904 extname = "session ticket";
907 case TLSEXT_TYPE_renegotiate:
908 extname = "renegotiation info";
911 #ifdef TLSEXT_TYPE_next_proto_neg
912 case TLSEXT_TYPE_next_proto_neg:
913 extname = "next protocol";
916 #ifdef TLSEXT_TYPE_encrypt_then_mac
917 case TLSEXT_TYPE_encrypt_then_mac:
918 extname = "encrypt-then-mac";
921 case TLSEXT_TYPE_padding:
922 extname = "TLS padding";
931 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
932 client_server ? "server" : "client", extname, type, len);
933 BIO_dump(bio, (char *)data, len);
934 (void)BIO_flush(bio);
937 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
938 unsigned int *cookie_len)
940 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
941 unsigned int length, resultlength;
944 struct sockaddr_in s4;
946 struct sockaddr_in6 s6;
950 /* Initialize a random secret */
951 if (!cookie_initialized) {
952 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH)) {
953 BIO_printf(bio_err, "error setting random cookie secret\n");
956 cookie_initialized = 1;
959 /* Read peer information */
960 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
962 /* Create buffer with peer's address and port */
964 switch (peer.sa.sa_family) {
966 length += sizeof(struct in_addr);
967 length += sizeof(peer.s4.sin_port);
971 length += sizeof(struct in6_addr);
972 length += sizeof(peer.s6.sin6_port);
979 buffer = OPENSSL_malloc(length);
981 if (buffer == NULL) {
982 BIO_printf(bio_err, "out of memory\n");
986 switch (peer.sa.sa_family) {
988 memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
989 memcpy(buffer + sizeof(peer.s4.sin_port),
990 &peer.s4.sin_addr, sizeof(struct in_addr));
994 memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
995 memcpy(buffer + sizeof(peer.s6.sin6_port),
996 &peer.s6.sin6_addr, sizeof(struct in6_addr));
1004 /* Calculate HMAC of buffer using the secret */
1005 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1006 buffer, length, result, &resultlength);
1007 OPENSSL_free(buffer);
1009 memcpy(cookie, result, resultlength);
1010 *cookie_len = resultlength;
1015 int verify_cookie_callback(SSL *ssl, unsigned char *cookie,
1016 unsigned int cookie_len)
1018 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1019 unsigned int length, resultlength;
1022 struct sockaddr_in s4;
1023 #if OPENSSL_USE_IPV6
1024 struct sockaddr_in6 s6;
1028 /* If secret isn't initialized yet, the cookie can't be valid */
1029 if (!cookie_initialized)
1032 /* Read peer information */
1033 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1035 /* Create buffer with peer's address and port */
1037 switch (peer.sa.sa_family) {
1039 length += sizeof(struct in_addr);
1040 length += sizeof(peer.s4.sin_port);
1042 #if OPENSSL_USE_IPV6
1044 length += sizeof(struct in6_addr);
1045 length += sizeof(peer.s6.sin6_port);
1052 buffer = OPENSSL_malloc(length);
1054 if (buffer == NULL) {
1055 BIO_printf(bio_err, "out of memory\n");
1059 switch (peer.sa.sa_family) {
1061 memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port));
1062 memcpy(buffer + sizeof(peer.s4.sin_port),
1063 &peer.s4.sin_addr, sizeof(struct in_addr));
1065 #if OPENSSL_USE_IPV6
1067 memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port));
1068 memcpy(buffer + sizeof(peer.s6.sin6_port),
1069 &peer.s6.sin6_addr, sizeof(struct in6_addr));
1077 /* Calculate HMAC of buffer using the secret */
1078 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1079 buffer, length, result, &resultlength);
1080 OPENSSL_free(buffer);
1082 if (cookie_len == resultlength
1083 && memcmp(result, cookie, resultlength) == 0)
1090 * Example of extended certificate handling. Where the standard support of
1091 * one certificate per algorithm is not sufficient an application can decide
1092 * which certificate(s) to use at runtime based on whatever criteria it deems
1096 /* Linked list of certificates, keys and chains */
1097 struct ssl_excert_st {
1099 const char *certfile;
1101 const char *keyfile;
1102 const char *chainfile;
1105 STACK_OF(X509) *chain;
1107 struct ssl_excert_st *next, *prev;
1110 struct chain_flags {
1115 struct chain_flags chain_flags_list[] = {
1116 {CERT_PKEY_VALID, "Overall Validity"},
1117 {CERT_PKEY_SIGN, "Sign with EE key"},
1118 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1119 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1120 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1121 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1122 {CERT_PKEY_EXPLICIT_SIGN, "Explicity sign with EE key"},
1123 {CERT_PKEY_ISSUER_NAME, "Issuer Name"},
1124 {CERT_PKEY_CERT_TYPE, "Certificate Type"},
1128 static void print_chain_flags(BIO *out, SSL *s, int flags)
1130 struct chain_flags *ctmp = chain_flags_list;
1131 while (ctmp->name) {
1132 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1133 flags & ctmp->flag ? "OK" : "NOT OK");
1136 BIO_printf(out, "\tSuite B: ");
1137 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
1138 BIO_puts(out, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
1140 BIO_printf(out, "not tested\n");
1144 * Very basic selection callback: just use any certificate chain reported as
1145 * valid. More sophisticated could prioritise according to local policy.
1147 static int set_cert_cb(SSL *ssl, void *arg)
1150 SSL_EXCERT *exc = arg;
1151 #ifdef CERT_CB_TEST_RETRY
1152 static int retry_cnt;
1153 if (retry_cnt < 5) {
1155 fprintf(stderr, "Certificate callback retry test: count %d\n",
1160 SSL_certs_clear(ssl);
1166 * Go to end of list and traverse backwards since we prepend newer
1167 * entries this retains the original order.
1176 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1177 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1178 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1180 BIO_puts(bio_err, "\n");
1182 print_chain_flags(bio_err, ssl, rv);
1183 if (rv & CERT_PKEY_VALID) {
1184 SSL_use_certificate(ssl, exc->cert);
1185 SSL_use_PrivateKey(ssl, exc->key);
1187 * NB: we wouldn't normally do this as it is not efficient
1188 * building chains on each connection better to cache the chain
1191 if (exc->build_chain) {
1192 if (!SSL_build_cert_chain(ssl, 0))
1194 } else if (exc->chain)
1195 SSL_set1_chain(ssl, exc->chain);
1202 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1204 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1207 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1210 exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1213 exc->certfile = NULL;
1214 exc->keyfile = NULL;
1215 exc->chainfile = NULL;
1220 exc->build_chain = 0;
1226 exc->certform = exc->next->certform;
1227 exc->keyform = exc->next->keyform;
1228 exc->next->prev = exc;
1230 exc->certform = FORMAT_PEM;
1231 exc->keyform = FORMAT_PEM;
1237 void ssl_excert_free(SSL_EXCERT *exc)
1242 X509_free(exc->cert);
1244 EVP_PKEY_free(exc->key);
1246 sk_X509_pop_free(exc->chain, X509_free);
1253 int load_excert(SSL_EXCERT **pexc, BIO *err)
1255 SSL_EXCERT *exc = *pexc;
1258 /* If nothing in list, free and set to NULL */
1259 if (!exc->certfile && !exc->next) {
1260 ssl_excert_free(exc);
1264 for (; exc; exc = exc->next) {
1265 if (!exc->certfile) {
1266 BIO_printf(err, "Missing filename\n");
1269 exc->cert = load_cert(err, exc->certfile, exc->certform,
1270 NULL, NULL, "Server Certificate");
1274 exc->key = load_key(err, exc->keyfile, exc->keyform,
1275 0, NULL, NULL, "Server Key");
1277 exc->key = load_key(err, exc->certfile, exc->certform,
1278 0, NULL, NULL, "Server Key");
1282 if (exc->chainfile) {
1283 exc->chain = load_certs(err,
1284 exc->chainfile, FORMAT_PEM,
1285 NULL, NULL, "Server Chain");
1293 int args_excert(char ***pargs, int *pargc,
1294 int *badarg, BIO *err, SSL_EXCERT **pexc)
1296 char *arg = **pargs, *argn = (*pargs)[1];
1297 SSL_EXCERT *exc = *pexc;
1300 if (ssl_excert_prepend(&exc))
1303 BIO_printf(err, "Error initialising xcert\n");
1308 if (strcmp(arg, "-xcert") == 0) {
1313 if (exc->certfile && !ssl_excert_prepend(&exc)) {
1314 BIO_printf(err, "Error adding xcert\n");
1318 exc->certfile = argn;
1319 } else if (strcmp(arg, "-xkey") == 0) {
1325 BIO_printf(err, "Key already specified\n");
1329 exc->keyfile = argn;
1330 } else if (strcmp(arg, "-xchain") == 0) {
1335 if (exc->chainfile) {
1336 BIO_printf(err, "Chain already specified\n");
1340 exc->chainfile = argn;
1341 } else if (strcmp(arg, "-xchain_build") == 0) {
1343 exc->build_chain = 1;
1344 } else if (strcmp(arg, "-xcertform") == 0) {
1349 exc->certform = str2fmt(argn);
1350 } else if (strcmp(arg, "-xkeyform") == 0) {
1355 exc->keyform = str2fmt(argn);
1369 ERR_print_errors(err);
1370 ssl_excert_free(exc);
1375 static void print_raw_cipherlist(BIO *bio, SSL *s)
1377 const unsigned char *rlist;
1378 static const unsigned char scsv_id[] = { 0, 0, 0xFF };
1379 size_t i, rlistlen, num;
1380 if (!SSL_is_server(s))
1382 num = SSL_get0_raw_cipherlist(s, NULL);
1383 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1384 BIO_puts(bio, "Client cipher list: ");
1385 for (i = 0; i < rlistlen; i += num, rlist += num) {
1386 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1390 BIO_puts(bio, SSL_CIPHER_get_name(c));
1391 else if (!memcmp(rlist, scsv_id - num + 3, num))
1392 BIO_puts(bio, "SCSV");
1395 BIO_puts(bio, "0x");
1396 for (j = 0; j < num; j++)
1397 BIO_printf(bio, "%02X", rlist[j]);
1400 BIO_puts(bio, "\n");
1403 void print_ssl_summary(BIO *bio, SSL *s)
1405 const SSL_CIPHER *c;
1408 * const char *pnam = SSL_is_server(s) ? "client" : "server";
1410 BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
1411 print_raw_cipherlist(bio, s);
1412 c = SSL_get_current_cipher(s);
1413 BIO_printf(bio, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1414 do_print_sigalgs(bio, s, 0);
1415 peer = SSL_get_peer_certificate(s);
1418 BIO_puts(bio, "Peer certificate: ");
1419 X509_NAME_print_ex(bio, X509_get_subject_name(peer),
1420 0, XN_FLAG_ONELINE);
1421 BIO_puts(bio, "\n");
1422 if (SSL_get_peer_signature_nid(s, &nid))
1423 BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
1425 BIO_puts(bio, "No peer certificate\n");
1428 #ifndef OPENSSL_NO_EC
1429 ssl_print_point_formats(bio, s);
1430 if (SSL_is_server(s))
1431 ssl_print_curves(bio, s, 1);
1433 ssl_print_tmp_key(bio, s);
1435 if (!SSL_is_server(s))
1436 ssl_print_tmp_key(bio, s);
1440 int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
1441 int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
1443 char *arg = **pargs, *argn = (*pargs)[1];
1446 /* Attempt to run SSL configuration command */
1447 rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
1448 /* If parameter not recognised just return */
1451 /* see if missing argument error */
1453 BIO_printf(err, "%s needs an argument\n", arg);
1457 /* Check for some other error */
1459 BIO_printf(err, "Error with command: \"%s %s\"\n",
1460 arg, argn ? argn : "");
1464 /* Store command and argument */
1465 /* If only one argument processed store value as NULL */
1469 *pstr = sk_OPENSSL_STRING_new_null();
1470 if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
1471 !sk_OPENSSL_STRING_push(*pstr, argn)) {
1472 BIO_puts(err, "Memory allocation failure\n");
1478 ERR_print_errors(err);
1483 int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
1484 STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
1487 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1488 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1489 const char *param = sk_OPENSSL_STRING_value(str, i);
1490 const char *value = sk_OPENSSL_STRING_value(str, i + 1);
1492 * If no_ecdhe or named curve already specified don't need a default.
1494 if (!no_ecdhe && !strcmp(param, "-named_curve"))
1496 #ifndef OPENSSL_NO_JPAKE
1497 if (!no_jpake && !strcmp(param, "-cipher")) {
1498 BIO_puts(err, "JPAKE sets cipher to PSK\n");
1502 if (SSL_CONF_cmd(cctx, param, value) <= 0) {
1503 BIO_printf(err, "Error with command: \"%s %s\"\n",
1504 param, value ? value : "");
1505 ERR_print_errors(err);
1510 * This is a special case to keep existing s_server functionality: if we
1511 * don't have any curve specified *and* we haven't disabled ECDHE then
1515 if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0) {
1516 BIO_puts(err, "Error setting EC curve\n");
1517 ERR_print_errors(err);
1521 #ifndef OPENSSL_NO_JPAKE
1523 if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0) {
1524 BIO_puts(err, "Error setting cipher to PSK\n");
1525 ERR_print_errors(err);
1530 if (!SSL_CONF_CTX_finish(cctx)) {
1531 BIO_puts(err, "Error finishing context\n");
1532 ERR_print_errors(err);
1538 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1542 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1543 crl = sk_X509_CRL_value(crls, i);
1544 X509_STORE_add_crl(st, crl);
1549 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1552 st = SSL_CTX_get_cert_store(ctx);
1553 add_crls_store(st, crls);
1555 store_setup_crl_download(st);
1559 int ssl_load_stores(SSL_CTX *ctx,
1560 const char *vfyCApath, const char *vfyCAfile,
1561 const char *chCApath, const char *chCAfile,
1562 STACK_OF(X509_CRL) *crls, int crl_download)
1564 X509_STORE *vfy = NULL, *ch = NULL;
1566 if (vfyCApath || vfyCAfile) {
1567 vfy = X509_STORE_new();
1568 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1570 add_crls_store(vfy, crls);
1571 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1573 store_setup_crl_download(vfy);
1575 if (chCApath || chCAfile) {
1576 ch = X509_STORE_new();
1577 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1579 SSL_CTX_set1_chain_cert_store(ctx, ch);
1584 X509_STORE_free(vfy);
1586 X509_STORE_free(ch);
1590 /* Verbose print out of security callback */
1595 int (*old_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1596 void *other, void *ex);
1597 } security_debug_ex;
1599 static int security_callback_debug(SSL *s, SSL_CTX *ctx,
1600 int op, int bits, int nid,
1601 void *other, void *ex)
1603 security_debug_ex *sdb = ex;
1604 int rv, show_bits = 1, cert_md = 0;
1606 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1607 if (rv == 1 && sdb->verbose < 2)
1609 BIO_puts(sdb->out, "Security callback: ");
1612 case SSL_SECOP_CIPHER_SUPPORTED:
1613 nm = "Supported Ciphersuite";
1615 case SSL_SECOP_CIPHER_SHARED:
1616 nm = "Shared Ciphersuite";
1618 case SSL_SECOP_CIPHER_CHECK:
1619 nm = "Check Ciphersuite";
1621 case SSL_SECOP_TICKET:
1622 BIO_puts(sdb->out, "Session ticket");
1626 case SSL_SECOP_COMPRESSION:
1627 BIO_puts(sdb->out, "SSL compression");
1631 #ifndef OPENSSL_NO_DH
1632 case SSL_SECOP_TMP_DH:
1633 nm = "Temp DH key bits";
1636 case SSL_SECOP_CURVE_SUPPORTED:
1637 nm = "Supported Curve";
1639 case SSL_SECOP_CURVE_SHARED:
1640 nm = "Shared Curve";
1642 case SSL_SECOP_CURVE_CHECK:
1645 case SSL_SECOP_VERSION:
1646 BIO_printf(sdb->out, "Version=%s", ssl_version_str(nid));
1650 case SSL_SECOP_SIGALG_SUPPORTED:
1651 nm = "Supported Signature Algorithm digest";
1653 case SSL_SECOP_SIGALG_SHARED:
1654 nm = "Shared Signature Algorithm digest";
1656 case SSL_SECOP_SIGALG_CHECK:
1657 nm = "Check Signature Algorithm digest";
1659 case SSL_SECOP_SIGALG_MASK:
1660 nm = "Signature Algorithm mask";
1662 case SSL_SECOP_EE_KEY:
1663 nm = "Certificate chain EE key";
1665 case SSL_SECOP_CA_KEY:
1666 nm = "Certificate chain CA key";
1668 case SSL_SECOP_CA_MD:
1670 nm = "Certificate chain CA digest";
1672 case SSL_SECOP_PEER_EE_KEY:
1673 nm = "Peer Chain EE key";
1675 case SSL_SECOP_PEER_CA_KEY:
1676 nm = "Peer Chain CA key";
1678 case SSL_SECOP_PEER_CA_MD:
1680 nm = "Peer chain CA digest";
1686 BIO_printf(sdb->out, "%s=", nm);
1688 switch (op & SSL_SECOP_OTHER_TYPE) {
1690 case SSL_SECOP_OTHER_CIPHER:
1691 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1694 #ifndef OPENSSL_NO_EC
1695 case SSL_SECOP_OTHER_CURVE:
1698 cname = EC_curve_nid2nist(nid);
1700 cname = OBJ_nid2sn(nid);
1701 BIO_puts(sdb->out, cname);
1706 case SSL_SECOP_OTHER_DH:
1709 BIO_printf(sdb->out, "%d", BN_num_bits(dh->p));
1712 case SSL_SECOP_OTHER_CERT:
1715 int sig_nid = X509_get_signature_nid(other);
1716 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1718 EVP_PKEY *pkey = X509_get_pubkey(other);
1719 const char *algname = "";
1720 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1721 &algname, EVP_PKEY_get0_asn1(pkey));
1722 BIO_printf(sdb->out, "%s, bits=%d",
1723 algname, EVP_PKEY_bits(pkey));
1724 EVP_PKEY_free(pkey);
1728 case SSL_SECOP_OTHER_SIGALG:
1730 const unsigned char *salg = other;
1731 const char *sname = NULL;
1733 case TLSEXT_signature_anonymous:
1734 sname = "anonymous";
1736 case TLSEXT_signature_rsa:
1739 case TLSEXT_signature_dsa:
1742 case TLSEXT_signature_ecdsa:
1747 BIO_puts(sdb->out, OBJ_nid2sn(nid));
1749 BIO_printf(sdb->out, ", algorithm=%s", sname);
1751 BIO_printf(sdb->out, ", algid=%d", salg[1]);
1758 BIO_printf(sdb->out, ", security bits=%d", bits);
1759 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1763 void ssl_ctx_security_debug(SSL_CTX *ctx, BIO *out, int verbose)
1765 static security_debug_ex sdb;
1767 sdb.verbose = verbose;
1768 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1769 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1770 SSL_CTX_set0_security_ex_data(ctx, &sdb);