2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
12 int ssl3_do_change_cipher_spec(SSL *s)
20 i = SSL3_CHANGE_CIPHER_SERVER_READ;
22 i = SSL3_CHANGE_CIPHER_CLIENT_READ;
24 if (s->s3->tmp.key_block == NULL) {
25 if (s->session == NULL || s->session->master_key_length == 0) {
26 /* might happen if dtls1_read_bytes() calls this */
27 SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY);
31 s->session->cipher = s->s3->tmp.new_cipher;
32 if (!s->method->ssl3_enc->setup_key_block(s))
36 if (!s->method->ssl3_enc->change_cipher_state(s, i))
40 * we have to record the message digest at this point so we can get it
41 * before we read the finished message
44 sender = s->method->ssl3_enc->server_finished_label;
45 slen = s->method->ssl3_enc->server_finished_label_len;
47 sender = s->method->ssl3_enc->client_finished_label;
48 slen = s->method->ssl3_enc->client_finished_label_len;
51 finish_md_len = s->method->ssl3_enc->final_finish_mac(s, sender, slen,
52 s->s3->tmp.peer_finish_md);
53 if (finish_md_len == 0) {
54 SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
57 s->s3->tmp.peer_finish_md_len = finish_md_len;
62 int ssl3_send_alert(SSL *s, int level, int desc)
64 /* Map tls/ssl alert value to correct one */
65 if (SSL_TREAT_AS_TLS13(s))
66 desc = tls13_alert_code(desc);
68 desc = s->method->ssl3_enc->alert_value(desc);
69 if (s->version == SSL3_VERSION && desc == SSL_AD_PROTOCOL_VERSION)
70 desc = SSL_AD_HANDSHAKE_FAILURE; /* SSL 3.0 does not have
71 * protocol_version alerts */
74 /* If a fatal one, remove from cache */
75 if ((level == SSL3_AL_FATAL) && (s->session != NULL))
76 SSL_CTX_remove_session(s->session_ctx, s->session);
78 s->s3->alert_dispatch = 1;
79 s->s3->send_alert[0] = level;
80 s->s3->send_alert[1] = desc;
81 if (!RECORD_LAYER_write_pending(&s->rlayer)) {
82 /* data still being written out? */
83 return s->method->ssl_dispatch_alert(s);
86 * else data is still being written out, we will get written some time in
92 int ssl3_dispatch_alert(SSL *s)
96 void (*cb) (const SSL *ssl, int type, int val) = NULL;
99 s->s3->alert_dispatch = 0;
101 i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], &alertlen, 1, 0,
104 s->s3->alert_dispatch = 1;
107 * Alert sent to BIO - now flush. If the message does not get sent due
108 * to non-blocking IO, we will not worry too much.
110 (void)BIO_flush(s->wbio);
113 s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
114 2, s, s->msg_callback_arg);
116 if (s->info_callback != NULL)
117 cb = s->info_callback;
118 else if (s->ctx->info_callback != NULL)
119 cb = s->ctx->info_callback;
122 j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
123 cb(s, SSL_CB_WRITE_ALERT, j);