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>
125 #define COOKIE_SECRET_LENGTH 16
128 int verify_error=X509_V_OK;
129 int verify_return_error=0;
130 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
131 int cookie_initialized=0;
133 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
138 err_cert=X509_STORE_CTX_get_current_cert(ctx);
139 err= X509_STORE_CTX_get_error(ctx);
140 depth= X509_STORE_CTX_get_error_depth(ctx);
142 BIO_printf(bio_err,"depth=%d ",depth);
145 X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
147 BIO_puts(bio_err, "\n");
150 BIO_puts(bio_err, "<no cert>\n");
153 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
154 X509_verify_cert_error_string(err));
155 if (verify_depth >= depth)
157 if (!verify_return_error)
159 verify_error=X509_V_OK;
164 verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
169 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
170 BIO_puts(bio_err,"issuer= ");
171 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
173 BIO_puts(bio_err, "\n");
175 case X509_V_ERR_CERT_NOT_YET_VALID:
176 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
177 BIO_printf(bio_err,"notBefore=");
178 ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
179 BIO_printf(bio_err,"\n");
181 case X509_V_ERR_CERT_HAS_EXPIRED:
182 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
183 BIO_printf(bio_err,"notAfter=");
184 ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
185 BIO_printf(bio_err,"\n");
187 case X509_V_ERR_NO_EXPLICIT_POLICY:
188 policies_print(bio_err, ctx);
191 if (err == X509_V_OK && ok == 2)
192 policies_print(bio_err, ctx);
194 BIO_printf(bio_err,"verify return:%d\n",ok);
198 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
200 if (cert_file != NULL)
207 if (SSL_CTX_use_certificate_file(ctx,cert_file,
208 SSL_FILETYPE_PEM) <= 0)
210 BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
211 ERR_print_errors(bio_err);
214 if (key_file == NULL) key_file=cert_file;
215 if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
216 SSL_FILETYPE_PEM) <= 0)
218 BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
219 ERR_print_errors(bio_err);
224 In theory this is no longer needed
226 x509=SSL_get_certificate(ssl);
230 pktmp = X509_get_pubkey(x509);
231 EVP_PKEY_copy_parameters(pktmp,
232 SSL_get_privatekey(ssl));
233 EVP_PKEY_free(pktmp);
238 /* If we are using DSA, we can copy the parameters from
242 /* Now we know that a key and cert have been set against
244 if (!SSL_CTX_check_private_key(ctx))
246 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
253 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
254 STACK_OF(X509) *chain, int build_chain)
258 if (SSL_CTX_use_certificate(ctx,cert) <= 0)
260 BIO_printf(bio_err,"error setting certificate\n");
261 ERR_print_errors(bio_err);
265 if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
267 BIO_printf(bio_err,"error setting private key\n");
268 ERR_print_errors(bio_err);
272 /* Now we know that a key and cert have been set against
274 if (!SSL_CTX_check_private_key(ctx))
276 BIO_printf(bio_err,"Private key does not match the certificate public key\n");
279 if (chain && !SSL_CTX_set1_chain(ctx, chain))
281 BIO_printf(bio_err,"error setting certificate chain\n");
282 ERR_print_errors(bio_err);
285 if (!chain && build_chain && !SSL_CTX_build_cert_chain(ctx, 0))
287 BIO_printf(bio_err,"error building certificate chain\n");
288 ERR_print_errors(bio_err);
295 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
297 const unsigned char *p;
299 int cert_type_num = SSL_get0_certificate_types(s, &p);
302 BIO_puts(bio, "Client Certificate Types: ");
303 for (i = 0; i < cert_type_num; i++)
305 unsigned char cert_type = p[i];
309 case TLS_CT_RSA_SIGN:
313 case TLS_CT_DSS_SIGN:
317 case TLS_CT_RSA_FIXED_DH:
318 cname = "RSA fixed DH";
321 case TLS_CT_DSS_FIXED_DH:
322 cname = "DSS fixed DH";
325 case TLS_CT_ECDSA_SIGN:
326 cname = "ECDSA sign";
329 case TLS_CT_RSA_FIXED_ECDH:
330 cname = "RSA fixed ECDH";
333 case TLS_CT_ECDSA_FIXED_ECDH:
334 cname = "ECDSA fixed ECDH";
337 case TLS_CT_GOST94_SIGN:
338 cname = "GOST94 Sign";
341 case TLS_CT_GOST01_SIGN:
342 cname = "GOST01 Sign";
353 BIO_puts(bio, cname);
355 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
360 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
363 client = SSL_is_server(s) ? 0 : 1;
365 nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
368 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
373 BIO_puts(out, "Shared ");
376 BIO_puts(out, "Requested ");
377 BIO_puts(out, "Signature Algorithms: ");
378 for (i = 0; i < nsig; i++)
380 int hash_nid, sign_nid;
381 unsigned char rhash, rsign;
382 const char *sstr = NULL;
384 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
387 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
391 if (sign_nid == EVP_PKEY_RSA)
393 else if(sign_nid == EVP_PKEY_DSA)
395 else if(sign_nid == EVP_PKEY_EC)
398 BIO_printf(out,"%s+", sstr);
400 BIO_printf(out,"0x%02X+", (int)rsign);
401 if (hash_nid != NID_undef)
402 BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
404 BIO_printf(out,"0x%02X", (int)rhash);
410 int ssl_print_sigalgs(BIO *out, SSL *s)
413 if (!SSL_is_server(s))
414 ssl_print_client_cert_types(out, s);
415 do_print_sigalgs(out, s, 0);
416 do_print_sigalgs(out, s, 1);
417 if (SSL_get_peer_signature_nid(s, &mdnid))
418 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
422 int ssl_print_curves(BIO *out, SSL *s)
424 int i, ncurves, *curves, nid;
426 ncurves = SSL_get1_curves(s, NULL);
429 curves = OPENSSL_malloc(ncurves * sizeof(int));
430 SSL_get1_curves(s, curves);
432 BIO_puts(out, "Supported Elliptic Curves: ");
433 for (i = 0; i < ncurves; i++)
438 /* If unrecognised print out hex version */
439 if (nid & TLSEXT_nid_unknown)
440 BIO_printf(out, "0x%04X", nid & 0xFFFF);
443 /* Use NIST name for curve if it exists */
444 cname = EC_curve_nid2nist(nid);
446 cname = OBJ_nid2sn(nid);
447 BIO_printf(out, "%s", cname);
450 BIO_puts(out, "\nShared Elliptic curves: ");
451 OPENSSL_free(curves);
452 ncurves = SSL_get_shared_curve(s, -1);
453 for (i = 0; i < ncurves; i++)
457 nid = SSL_get_shared_curve(s, i);
458 cname = EC_curve_nid2nist(nid);
460 cname = OBJ_nid2sn(nid);
461 BIO_printf(out, "%s", cname);
464 BIO_puts(out, "NONE");
470 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
471 int argi, long argl, long ret)
475 out=(BIO *)BIO_get_callback_arg(bio);
476 if (out == NULL) return(ret);
478 if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
480 BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
481 (void *)bio,argp,(unsigned long)argi,ret,ret);
482 BIO_dump(out,argp,(int)ret);
485 else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
487 BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
488 (void *)bio,argp,(unsigned long)argi,ret,ret);
489 BIO_dump(out,argp,(int)ret);
494 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
499 w=where& ~SSL_ST_MASK;
501 if (w & SSL_ST_CONNECT) str="SSL_connect";
502 else if (w & SSL_ST_ACCEPT) str="SSL_accept";
503 else str="undefined";
505 if (where & SSL_CB_LOOP)
507 BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
509 else if (where & SSL_CB_ALERT)
511 str=(where & SSL_CB_READ)?"read":"write";
512 BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
514 SSL_alert_type_string_long(ret),
515 SSL_alert_desc_string_long(ret));
517 else if (where & SSL_CB_EXIT)
520 BIO_printf(bio_err,"%s:failed in %s\n",
521 str,SSL_state_string_long(s));
524 BIO_printf(bio_err,"%s:error in %s\n",
525 str,SSL_state_string_long(s));
531 void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
534 const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
536 str_write_p = write_p ? ">>>" : "<<<";
541 str_version = "SSL 2.0";
544 str_version = "SSL 3.0 ";
547 str_version = "TLS 1.0 ";
550 str_version = "TLS 1.1 ";
553 str_version = "TLS 1.2 ";
556 str_version = "DTLS 1.0 ";
559 str_version = "DTLS 1.0 (bad) ";
565 if (version == SSL2_VERSION)
567 str_details1 = "???";
571 switch (((const unsigned char*)buf)[0])
574 str_details1 = ", ERROR:";
575 str_details2 = " ???";
578 unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
583 str_details2 = " NO-CIPHER-ERROR";
586 str_details2 = " NO-CERTIFICATE-ERROR";
589 str_details2 = " BAD-CERTIFICATE-ERROR";
592 str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
599 str_details1 = ", CLIENT-HELLO";
602 str_details1 = ", CLIENT-MASTER-KEY";
605 str_details1 = ", CLIENT-FINISHED";
608 str_details1 = ", SERVER-HELLO";
611 str_details1 = ", SERVER-VERIFY";
614 str_details1 = ", SERVER-FINISHED";
617 str_details1 = ", REQUEST-CERTIFICATE";
620 str_details1 = ", CLIENT-CERTIFICATE";
626 if (version == SSL3_VERSION ||
627 version == TLS1_VERSION ||
628 version == TLS1_1_VERSION ||
629 version == TLS1_2_VERSION ||
630 version == DTLS1_VERSION ||
631 version == DTLS1_BAD_VER)
633 switch (content_type)
636 str_content_type = "ChangeCipherSpec";
639 str_content_type = "Alert";
642 str_content_type = "Handshake";
646 if (content_type == 21) /* Alert */
648 str_details1 = ", ???";
652 switch (((const unsigned char*)buf)[0])
655 str_details1 = ", warning";
658 str_details1 = ", fatal";
662 str_details2 = " ???";
663 switch (((const unsigned char*)buf)[1])
666 str_details2 = " close_notify";
669 str_details2 = " unexpected_message";
672 str_details2 = " bad_record_mac";
675 str_details2 = " decryption_failed";
678 str_details2 = " record_overflow";
681 str_details2 = " decompression_failure";
684 str_details2 = " handshake_failure";
687 str_details2 = " bad_certificate";
690 str_details2 = " unsupported_certificate";
693 str_details2 = " certificate_revoked";
696 str_details2 = " certificate_expired";
699 str_details2 = " certificate_unknown";
702 str_details2 = " illegal_parameter";
705 str_details2 = " unknown_ca";
708 str_details2 = " access_denied";
711 str_details2 = " decode_error";
714 str_details2 = " decrypt_error";
717 str_details2 = " export_restriction";
720 str_details2 = " protocol_version";
723 str_details2 = " insufficient_security";
726 str_details2 = " internal_error";
729 str_details2 = " user_canceled";
732 str_details2 = " no_renegotiation";
735 str_details2 = " unsupported_extension";
738 str_details2 = " certificate_unobtainable";
741 str_details2 = " unrecognized_name";
744 str_details2 = " bad_certificate_status_response";
747 str_details2 = " bad_certificate_hash_value";
750 str_details2 = " unknown_psk_identity";
756 if (content_type == 22) /* Handshake */
758 str_details1 = "???";
762 switch (((const unsigned char*)buf)[0])
765 str_details1 = ", HelloRequest";
768 str_details1 = ", ClientHello";
771 str_details1 = ", ServerHello";
774 str_details1 = ", HelloVerifyRequest";
777 str_details1 = ", Certificate";
780 str_details1 = ", ServerKeyExchange";
783 str_details1 = ", CertificateRequest";
786 str_details1 = ", ServerHelloDone";
789 str_details1 = ", CertificateVerify";
792 str_details1 = ", ClientKeyExchange";
795 str_details1 = ", Finished";
801 #ifndef OPENSSL_NO_HEARTBEATS
802 if (content_type == 24) /* Heartbeat */
804 str_details1 = ", Heartbeat";
808 switch (((const unsigned char*)buf)[0])
811 str_details1 = ", HeartbeatRequest";
814 str_details1 = ", HeartbeatResponse";
822 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
828 BIO_printf(bio, " ");
834 for (i = 0; i < num; i++)
836 if (i % 16 == 0 && i > 0)
837 BIO_printf(bio, "\n ");
838 BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
841 BIO_printf(bio, " ...");
842 BIO_printf(bio, "\n");
844 (void)BIO_flush(bio);
847 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
848 unsigned char *data, int len,
856 case TLSEXT_TYPE_server_name:
857 extname = "server name";
860 case TLSEXT_TYPE_max_fragment_length:
861 extname = "max fragment length";
864 case TLSEXT_TYPE_client_certificate_url:
865 extname = "client certificate URL";
868 case TLSEXT_TYPE_trusted_ca_keys:
869 extname = "trusted CA keys";
872 case TLSEXT_TYPE_truncated_hmac:
873 extname = "truncated HMAC";
876 case TLSEXT_TYPE_status_request:
877 extname = "status request";
880 case TLSEXT_TYPE_user_mapping:
881 extname = "user mapping";
884 case TLSEXT_TYPE_client_authz:
885 extname = "client authz";
888 case TLSEXT_TYPE_server_authz:
889 extname = "server authz";
892 case TLSEXT_TYPE_cert_type:
893 extname = "cert type";
896 case TLSEXT_TYPE_elliptic_curves:
897 extname = "elliptic curves";
900 case TLSEXT_TYPE_ec_point_formats:
901 extname = "EC point formats";
904 case TLSEXT_TYPE_srp:
908 case TLSEXT_TYPE_signature_algorithms:
909 extname = "signature algorithms";
912 case TLSEXT_TYPE_use_srtp:
913 extname = "use SRTP";
916 case TLSEXT_TYPE_heartbeat:
917 extname = "heartbeat";
920 case TLSEXT_TYPE_session_ticket:
921 extname = "session ticket";
924 case TLSEXT_TYPE_renegotiate:
925 extname = "renegotiation info";
928 #ifdef TLSEXT_TYPE_opaque_prf_input
929 case TLSEXT_TYPE_opaque_prf_input:
930 extname = "opaque PRF input";
933 #ifdef TLSEXT_TYPE_next_proto_neg
934 case TLSEXT_TYPE_next_proto_neg:
935 extname = "next protocol";
945 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
946 client_server ? "server": "client",
948 BIO_dump(bio, (char *)data, len);
949 (void)BIO_flush(bio);
952 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
954 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
955 unsigned int length, resultlength;
958 struct sockaddr_in s4;
960 struct sockaddr_in6 s6;
964 /* Initialize a random secret */
965 if (!cookie_initialized)
967 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
969 BIO_printf(bio_err,"error setting random cookie secret\n");
972 cookie_initialized = 1;
975 /* Read peer information */
976 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
978 /* Create buffer with peer's address and port */
980 switch (peer.sa.sa_family)
983 length += sizeof(struct in_addr);
984 length += sizeof(peer.s4.sin_port);
988 length += sizeof(struct in6_addr);
989 length += sizeof(peer.s6.sin6_port);
996 buffer = OPENSSL_malloc(length);
1000 BIO_printf(bio_err,"out of memory\n");
1004 switch (peer.sa.sa_family)
1009 sizeof(peer.s4.sin_port));
1010 memcpy(buffer + sizeof(peer.s4.sin_port),
1012 sizeof(struct in_addr));
1014 #if OPENSSL_USE_IPV6
1018 sizeof(peer.s6.sin6_port));
1019 memcpy(buffer + sizeof(peer.s6.sin6_port),
1021 sizeof(struct in6_addr));
1029 /* Calculate HMAC of buffer using the secret */
1030 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1031 buffer, length, result, &resultlength);
1032 OPENSSL_free(buffer);
1034 memcpy(cookie, result, resultlength);
1035 *cookie_len = resultlength;
1040 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
1042 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
1043 unsigned int length, resultlength;
1046 struct sockaddr_in s4;
1047 #if OPENSSL_USE_IPV6
1048 struct sockaddr_in6 s6;
1052 /* If secret isn't initialized yet, the cookie can't be valid */
1053 if (!cookie_initialized)
1056 /* Read peer information */
1057 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
1059 /* Create buffer with peer's address and port */
1061 switch (peer.sa.sa_family)
1064 length += sizeof(struct in_addr);
1065 length += sizeof(peer.s4.sin_port);
1067 #if OPENSSL_USE_IPV6
1069 length += sizeof(struct in6_addr);
1070 length += sizeof(peer.s6.sin6_port);
1077 buffer = OPENSSL_malloc(length);
1081 BIO_printf(bio_err,"out of memory\n");
1085 switch (peer.sa.sa_family)
1090 sizeof(peer.s4.sin_port));
1091 memcpy(buffer + sizeof(peer.s4.sin_port),
1093 sizeof(struct in_addr));
1095 #if OPENSSL_USE_IPV6
1099 sizeof(peer.s6.sin6_port));
1100 memcpy(buffer + sizeof(peer.s6.sin6_port),
1102 sizeof(struct in6_addr));
1110 /* Calculate HMAC of buffer using the secret */
1111 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
1112 buffer, length, result, &resultlength);
1113 OPENSSL_free(buffer);
1115 if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
1121 /* Example of extended certificate handling. Where the standard support
1122 * of one certificate per algorithm is not sufficient an application
1123 * can decide which certificate(s) to use at runtime based on whatever
1124 * criteria it deems appropriate.
1127 /* Linked list of certificates, keys and chains */
1128 struct ssl_excert_st
1131 const char *certfile;
1133 const char *keyfile;
1134 const char *chainfile;
1137 STACK_OF(X509) *chain;
1139 struct ssl_excert_st *next, *prev;
1148 struct chain_flags chain_flags_list[] =
1150 {CERT_PKEY_VALID, "Overall Validity"},
1151 {CERT_PKEY_SIGN, "Sign with EE key"},
1152 {CERT_PKEY_EE_SIGNATURE, "EE signature"},
1153 {CERT_PKEY_CA_SIGNATURE, "CA signature"},
1154 {CERT_PKEY_EE_PARAM, "EE key parameters"},
1155 {CERT_PKEY_CA_PARAM, "CA key parameters"},
1156 {CERT_PKEY_EXPLICIT_SIGN, "Explicity sign with EE key"},
1157 {CERT_PKEY_ISSUER_NAME, "Issuer Name"},
1158 {CERT_PKEY_CERT_TYPE, "Certificate Type"},
1163 static void print_chain_flags(BIO *out, int flags)
1165 struct chain_flags *ctmp = chain_flags_list;
1168 BIO_printf(out, "\t%s: %s\n", ctmp->name,
1169 flags & ctmp->flag ? "OK" : "NOT OK");
1174 /* Very basic selection callback: just use any certificate chain
1175 * reported as valid. More sophisticated could prioritise according
1178 static int set_cert_cb(SSL *ssl, void *arg)
1181 SSL_EXCERT *exc = arg;
1182 SSL_certs_clear(ssl);
1187 /* Go to end of list and traverse backwards since we prepend
1188 * newer entries this retains the original order.
1198 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
1199 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
1200 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
1202 BIO_puts(bio_err, "\n");
1204 print_chain_flags(bio_err, rv);
1205 if (rv & CERT_PKEY_VALID)
1207 SSL_use_certificate(ssl, exc->cert);
1208 SSL_use_PrivateKey(ssl, exc->key);
1209 /* NB: we wouldn't normally do this as it is
1210 * not efficient building chains on each connection
1211 * better to cache the chain in advance.
1213 if (exc->build_chain)
1215 if (!SSL_build_cert_chain(ssl, 0))
1218 else if (exc->chain)
1219 SSL_set1_chain(ssl, exc->chain);
1226 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
1228 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
1231 static int ssl_excert_prepend(SSL_EXCERT **pexc)
1234 exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
1237 exc->certfile = NULL;
1238 exc->keyfile = NULL;
1239 exc->chainfile = NULL;
1244 exc->build_chain = 0;
1251 exc->certform = exc->next->certform;
1252 exc->keyform = exc->next->keyform;
1253 exc->next->prev = exc;
1257 exc->certform = FORMAT_PEM;
1258 exc->keyform = FORMAT_PEM;
1264 void ssl_excert_free(SSL_EXCERT *exc)
1270 X509_free(exc->cert);
1272 EVP_PKEY_free(exc->key);
1274 sk_X509_pop_free(exc->chain, X509_free);
1281 int load_excert(SSL_EXCERT **pexc, BIO *err)
1283 SSL_EXCERT *exc = *pexc;
1286 /* If nothing in list, free and set to NULL */
1287 if (!exc->certfile && !exc->next)
1289 ssl_excert_free(exc);
1293 for(; exc; exc=exc->next)
1297 BIO_printf(err, "Missing filename\n");
1300 exc->cert = load_cert(err, exc->certfile, exc->certform,
1301 NULL, NULL, "Server Certificate");
1305 exc->keyfile = exc->certfile;
1306 exc->key = load_key(err, exc->certfile, exc->certform, 0,
1307 NULL, NULL, "Server Certificate");
1312 exc->chain = load_certs(err,
1313 exc->chainfile, FORMAT_PEM,
1316 if (!exc->chainfile)
1324 int args_excert(char ***pargs, int *pargc,
1325 int *badarg, BIO *err, SSL_EXCERT **pexc)
1327 char *arg = **pargs, *argn = (*pargs)[1];
1328 SSL_EXCERT *exc = *pexc;
1332 if (ssl_excert_prepend(&exc))
1336 BIO_printf(err, "Error initialising xcert\n");
1341 if (strcmp(arg, "-xcert") == 0)
1348 if (exc->certfile && !ssl_excert_prepend(&exc))
1350 BIO_printf(err, "Error adding xcert\n");
1354 exc->certfile = argn;
1356 else if (strcmp(arg,"-xkey") == 0)
1365 BIO_printf(err, "Key already specified\n");
1369 exc->keyfile = argn;
1371 else if (strcmp(arg,"-xchain") == 0)
1380 BIO_printf(err, "Chain already specified\n");
1384 exc->chainfile = argn;
1386 else if (strcmp(arg,"-xchain_build") == 0)
1389 exc->build_chain = 1;
1391 else if (strcmp(arg,"-xcertform") == 0)
1398 exc->certform = str2fmt(argn);
1400 else if (strcmp(arg,"-xkeyform") == 0)
1407 exc->keyform = str2fmt(argn);
1422 ERR_print_errors(err);
1423 ssl_excert_free(exc);