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) 1998-2015 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).
113 #include "ssl_locl.h"
115 int ssl3_do_change_cipher_spec(SSL *s)
121 if (s->state & SSL_ST_ACCEPT)
122 i = SSL3_CHANGE_CIPHER_SERVER_READ;
124 i = SSL3_CHANGE_CIPHER_CLIENT_READ;
126 if (s->s3->tmp.key_block == NULL) {
127 if (s->session == NULL || s->session->master_key_length == 0) {
128 /* might happen if dtls1_read_bytes() calls this */
129 SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,
130 SSL_R_CCS_RECEIVED_EARLY);
134 s->session->cipher = s->s3->tmp.new_cipher;
135 if (!s->method->ssl3_enc->setup_key_block(s))
139 if (!s->method->ssl3_enc->change_cipher_state(s, i))
143 * we have to record the message digest at this point so we can get it
144 * before we read the finished message
146 if (s->state & SSL_ST_CONNECT) {
147 sender = s->method->ssl3_enc->server_finished_label;
148 slen = s->method->ssl3_enc->server_finished_label_len;
150 sender = s->method->ssl3_enc->client_finished_label;
151 slen = s->method->ssl3_enc->client_finished_label_len;
154 i = s->method->ssl3_enc->final_finish_mac(s,
156 s->s3->tmp.peer_finish_md);
158 SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
161 s->s3->tmp.peer_finish_md_len = i;
166 int ssl3_send_alert(SSL *s, int level, int desc)
168 /* Map tls/ssl alert value to correct one */
169 desc = s->method->ssl3_enc->alert_value(desc);
170 if (s->version == SSL3_VERSION && desc == SSL_AD_PROTOCOL_VERSION)
171 desc = SSL_AD_HANDSHAKE_FAILURE; /* SSL 3.0 does not have
172 * protocol_version alerts */
175 /* If a fatal one, remove from cache */
176 if ((level == SSL3_AL_FATAL) && (s->session != NULL))
177 SSL_CTX_remove_session(s->ctx, s->session);
179 s->s3->alert_dispatch = 1;
180 s->s3->send_alert[0] = level;
181 s->s3->send_alert[1] = desc;
182 if (SSL3_BUFFER_get_left(RECORD_LAYER_get_wbuf(&s->rlayer)) == 0) {
183 /* data still being written out? */
184 return s->method->ssl_dispatch_alert(s);
187 * else data is still being written out, we will get written some time in
193 int ssl3_dispatch_alert(SSL *s)
196 void (*cb) (const SSL *ssl, int type, int val) = NULL;
198 s->s3->alert_dispatch = 0;
199 i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], 2, 0);
201 s->s3->alert_dispatch = 1;
204 * Alert sent to BIO. If it is important, flush it now. If the
205 * message does not get sent due to non-blocking IO, we will not
208 if (s->s3->send_alert[0] == SSL3_AL_FATAL)
209 (void)BIO_flush(s->wbio);
212 s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
213 2, s, s->msg_callback_arg);
215 if (s->info_callback != NULL)
216 cb = s->info_callback;
217 else if (s->ctx->info_callback != NULL)
218 cb = s->ctx->info_callback;
221 j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
222 cb(s, SSL_CB_WRITE_ALERT, j);