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) 1998-2001 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
127 int verify_depth = 0;
128 int verify_error = X509_V_OK;
129 unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
130 int cookie_initialized = 0;
132 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 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof buf);
143 BIO_printf(bio_err, "depth=%d %s\n", depth, buf);
145 BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
146 X509_verify_cert_error_string(err));
147 if (verify_depth >= depth) {
149 verify_error = X509_V_OK;
152 verify_error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
155 switch (ctx->error) {
156 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
157 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf,
159 BIO_printf(bio_err, "issuer= %s\n", buf);
161 case X509_V_ERR_CERT_NOT_YET_VALID:
162 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
163 BIO_printf(bio_err, "notBefore=");
164 ASN1_TIME_print(bio_err, X509_get_notBefore(ctx->current_cert));
165 BIO_printf(bio_err, "\n");
167 case X509_V_ERR_CERT_HAS_EXPIRED:
168 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
169 BIO_printf(bio_err, "notAfter=");
170 ASN1_TIME_print(bio_err, X509_get_notAfter(ctx->current_cert));
171 BIO_printf(bio_err, "\n");
174 BIO_printf(bio_err, "verify return:%d\n", ok);
178 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
180 if (cert_file != NULL) {
186 if (SSL_CTX_use_certificate_file(ctx, cert_file,
187 SSL_FILETYPE_PEM) <= 0) {
188 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
190 ERR_print_errors(bio_err);
193 if (key_file == NULL)
194 key_file = cert_file;
195 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
196 BIO_printf(bio_err, "unable to get private key from '%s'\n",
198 ERR_print_errors(bio_err);
203 In theory this is no longer needed
205 x509=SSL_get_certificate(ssl);
209 pktmp = X509_get_pubkey(x509);
210 EVP_PKEY_copy_parameters(pktmp,
211 SSL_get_privatekey(ssl));
212 EVP_PKEY_free(pktmp);
218 * If we are using DSA, we can copy the parameters from the private
223 * Now we know that a key and cert have been set against the SSL
226 if (!SSL_CTX_check_private_key(ctx)) {
228 "Private key does not match the certificate public key\n");
235 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
239 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
240 BIO_printf(bio_err, "error setting certificate\n");
241 ERR_print_errors(bio_err);
244 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
245 BIO_printf(bio_err, "error setting private key\n");
246 ERR_print_errors(bio_err);
251 * Now we know that a key and cert have been set against the SSL context
253 if (!SSL_CTX_check_private_key(ctx)) {
255 "Private key does not match the certificate public key\n");
261 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
262 int argi, long argl, long ret)
266 out = (BIO *)BIO_get_callback_arg(bio);
270 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
271 BIO_printf(out, "read from %p [%p] (%d bytes => %ld (0x%lX))\n",
272 (void *)bio, argp, argi, ret, ret);
273 BIO_dump(out, argp, (int)ret);
275 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
276 BIO_printf(out, "write to %p [%p] (%d bytes => %ld (0x%lX))\n",
277 (void *)bio, argp, argi, ret, ret);
278 BIO_dump(out, argp, (int)ret);
283 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
288 w = where & ~SSL_ST_MASK;
290 if (w & SSL_ST_CONNECT)
292 else if (w & SSL_ST_ACCEPT)
297 if (where & SSL_CB_LOOP) {
298 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
299 } else if (where & SSL_CB_ALERT) {
300 str = (where & SSL_CB_READ) ? "read" : "write";
301 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
303 SSL_alert_type_string_long(ret),
304 SSL_alert_desc_string_long(ret));
305 } else if (where & SSL_CB_EXIT) {
307 BIO_printf(bio_err, "%s:failed in %s\n",
308 str, SSL_state_string_long(s));
310 BIO_printf(bio_err, "%s:error in %s\n",
311 str, SSL_state_string_long(s));
316 void MS_CALLBACK msg_cb(int write_p, int version, int content_type,
317 const void *buf, size_t len, SSL *ssl, void *arg)
320 const char *str_write_p, *str_version, *str_content_type =
321 "", *str_details1 = "", *str_details2 = "";
323 str_write_p = write_p ? ">>>" : "<<<";
327 str_version = "SSL 2.0";
330 str_version = "SSL 3.0 ";
333 str_version = "TLS 1.0 ";
338 str_version = "DTLS 1.0 ";
341 str_version = "DTLS 1.0 (bad) ";
345 if (version == SSL2_VERSION) {
346 str_details1 = "???";
349 switch (((const unsigned char *)buf)[0]) {
351 str_details1 = ", ERROR:";
352 str_details2 = " ???";
355 (((const unsigned char *)buf)[1] << 8) +
356 ((const unsigned char *)buf)[2];
360 str_details2 = " NO-CIPHER-ERROR";
363 str_details2 = " NO-CERTIFICATE-ERROR";
366 str_details2 = " BAD-CERTIFICATE-ERROR";
369 str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
376 str_details1 = ", CLIENT-HELLO";
379 str_details1 = ", CLIENT-MASTER-KEY";
382 str_details1 = ", CLIENT-FINISHED";
385 str_details1 = ", SERVER-HELLO";
388 str_details1 = ", SERVER-VERIFY";
391 str_details1 = ", SERVER-FINISHED";
394 str_details1 = ", REQUEST-CERTIFICATE";
397 str_details1 = ", CLIENT-CERTIFICATE";
403 if (version == SSL3_VERSION ||
404 version == TLS1_VERSION ||
405 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
406 switch (content_type) {
408 str_content_type = "ChangeCipherSpec";
411 str_content_type = "Alert";
414 str_content_type = "Handshake";
418 if (content_type == 21) { /* Alert */
419 str_details1 = ", ???";
422 switch (((const unsigned char *)buf)[0]) {
424 str_details1 = ", warning";
427 str_details1 = ", fatal";
431 str_details2 = " ???";
432 switch (((const unsigned char *)buf)[1]) {
434 str_details2 = " close_notify";
437 str_details2 = " unexpected_message";
440 str_details2 = " bad_record_mac";
443 str_details2 = " decryption_failed";
446 str_details2 = " record_overflow";
449 str_details2 = " decompression_failure";
452 str_details2 = " handshake_failure";
455 str_details2 = " bad_certificate";
458 str_details2 = " unsupported_certificate";
461 str_details2 = " certificate_revoked";
464 str_details2 = " certificate_expired";
467 str_details2 = " certificate_unknown";
470 str_details2 = " illegal_parameter";
473 str_details2 = " unknown_ca";
476 str_details2 = " access_denied";
479 str_details2 = " decode_error";
482 str_details2 = " decrypt_error";
485 str_details2 = " export_restriction";
488 str_details2 = " protocol_version";
491 str_details2 = " insufficient_security";
494 str_details2 = " internal_error";
497 str_details2 = " user_canceled";
500 str_details2 = " no_renegotiation";
503 str_details2 = " unsupported_extension";
506 str_details2 = " certificate_unobtainable";
509 str_details2 = " unrecognized_name";
512 str_details2 = " bad_certificate_status_response";
515 str_details2 = " bad_certificate_hash_value";
518 str_details2 = " unknown_psk_identity";
524 if (content_type == 22) { /* Handshake */
525 str_details1 = "???";
528 switch (((const unsigned char *)buf)[0]) {
530 str_details1 = ", HelloRequest";
533 str_details1 = ", ClientHello";
536 str_details1 = ", ServerHello";
539 str_details1 = ", Certificate";
542 str_details1 = ", ServerKeyExchange";
545 str_details1 = ", CertificateRequest";
548 str_details1 = ", ServerHelloDone";
551 str_details1 = ", CertificateVerify";
554 str_details1 = ", HelloVerifyRequest";
557 str_details1 = ", ClientKeyExchange";
560 str_details1 = ", Finished";
567 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
568 str_content_type, (unsigned long)len, str_details1,
574 BIO_printf(bio, " ");
580 for (i = 0; i < num; i++) {
581 if (i % 16 == 0 && i > 0)
582 BIO_printf(bio, "\n ");
583 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
586 BIO_printf(bio, " ...");
587 BIO_printf(bio, "\n");
589 (void)BIO_flush(bio);
592 void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
593 unsigned char *data, int len, void *arg)
599 case TLSEXT_TYPE_server_name:
600 extname = "server name";
603 case TLSEXT_TYPE_max_fragment_length:
604 extname = "max fragment length";
607 case TLSEXT_TYPE_client_certificate_url:
608 extname = "client certificate URL";
611 case TLSEXT_TYPE_trusted_ca_keys:
612 extname = "trusted CA keys";
615 case TLSEXT_TYPE_truncated_hmac:
616 extname = "truncated HMAC";
619 case TLSEXT_TYPE_status_request:
620 extname = "status request";
623 case TLSEXT_TYPE_elliptic_curves:
624 extname = "elliptic curves";
627 case TLSEXT_TYPE_ec_point_formats:
628 extname = "EC point formats";
631 case TLSEXT_TYPE_session_ticket:
632 extname = "server ticket";
635 case TLSEXT_TYPE_renegotiate:
636 extname = "renegotiate";
645 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
646 client_server ? "server" : "client", extname, type, len);
647 BIO_dump(bio, (char *)data, len);
648 (void)BIO_flush(bio);
651 int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie,
652 unsigned int *cookie_len)
654 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
655 unsigned int length, resultlength;
656 struct sockaddr_in peer;
658 /* Initialize a random secret */
659 if (!cookie_initialized) {
660 if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH)) {
661 BIO_printf(bio_err, "error setting random cookie secret\n");
664 cookie_initialized = 1;
667 /* Read peer information */
668 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
670 /* Create buffer with peer's address and port */
671 length = sizeof(peer.sin_addr);
672 length += sizeof(peer.sin_port);
673 buffer = OPENSSL_malloc(length);
675 if (buffer == NULL) {
676 BIO_printf(bio_err, "out of memory\n");
680 memcpy(buffer, &peer.sin_addr, sizeof(peer.sin_addr));
681 memcpy(buffer + sizeof(peer.sin_addr), &peer.sin_port,
682 sizeof(peer.sin_port));
684 /* Calculate HMAC of buffer using the secret */
685 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
686 buffer, length, result, &resultlength);
687 OPENSSL_free(buffer);
689 memcpy(cookie, result, resultlength);
690 *cookie_len = resultlength;
695 int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie,
696 unsigned int cookie_len)
698 unsigned char *buffer, result[EVP_MAX_MD_SIZE];
699 unsigned int length, resultlength;
700 struct sockaddr_in peer;
702 /* If secret isn't initialized yet, the cookie can't be valid */
703 if (!cookie_initialized)
706 /* Read peer information */
707 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
709 /* Create buffer with peer's address and port */
710 length = sizeof(peer.sin_addr);
711 length += sizeof(peer.sin_port);
712 buffer = (unsigned char *)OPENSSL_malloc(length);
714 if (buffer == NULL) {
715 BIO_printf(bio_err, "out of memory\n");
719 memcpy(buffer, &peer.sin_addr, sizeof(peer.sin_addr));
720 memcpy(buffer + sizeof(peer.sin_addr), &peer.sin_port,
721 sizeof(peer.sin_port));
723 /* Calculate HMAC of buffer using the secret */
724 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
725 buffer, length, result, &resultlength);
726 OPENSSL_free(buffer);
728 if (cookie_len == resultlength
729 && memcmp(result, cookie, resultlength) == 0)