mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/*
|
|
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include "ssl_locl.h"
|
|
|
|
int ssl3_do_change_cipher_spec(SSL *s)
|
|
{
|
|
int i;
|
|
|
|
if (s->server)
|
|
i = SSL3_CHANGE_CIPHER_SERVER_READ;
|
|
else
|
|
i = SSL3_CHANGE_CIPHER_CLIENT_READ;
|
|
|
|
if (s->s3->tmp.key_block == NULL) {
|
|
if (s->session == NULL || s->session->master_key_length == 0) {
|
|
/* might happen if dtls1_read_bytes() calls this */
|
|
SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY);
|
|
return 0;
|
|
}
|
|
|
|
s->session->cipher = s->s3->tmp.new_cipher;
|
|
if (!s->method->ssl3_enc->setup_key_block(s))
|
|
return 0;
|
|
}
|
|
|
|
if (!s->method->ssl3_enc->change_cipher_state(s, i))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int ssl3_send_alert(SSL *s, int level, int desc)
|
|
{
|
|
/* Map tls/ssl alert value to correct one */
|
|
if (SSL_TREAT_AS_TLS13(s))
|
|
desc = tls13_alert_code(desc);
|
|
else
|
|
desc = s->method->ssl3_enc->alert_value(desc);
|
|
if (s->version == SSL3_VERSION && desc == SSL_AD_PROTOCOL_VERSION)
|
|
desc = SSL_AD_HANDSHAKE_FAILURE; /* SSL 3.0 does not have
|
|
* protocol_version alerts */
|
|
if (desc < 0)
|
|
return -1;
|
|
/* If a fatal one, remove from cache */
|
|
if ((level == SSL3_AL_FATAL) && (s->session != NULL))
|
|
SSL_CTX_remove_session(s->session_ctx, s->session);
|
|
|
|
s->s3->alert_dispatch = 1;
|
|
s->s3->send_alert[0] = level;
|
|
s->s3->send_alert[1] = desc;
|
|
if (!RECORD_LAYER_write_pending(&s->rlayer)) {
|
|
/* data still being written out? */
|
|
return s->method->ssl_dispatch_alert(s);
|
|
}
|
|
/*
|
|
* else data is still being written out, we will get written some time in
|
|
* the future
|
|
*/
|
|
return -1;
|
|
}
|
|
|
|
int ssl3_dispatch_alert(SSL *s)
|
|
{
|
|
int i, j;
|
|
size_t alertlen;
|
|
void (*cb) (const SSL *ssl, int type, int val) = NULL;
|
|
size_t written;
|
|
|
|
s->s3->alert_dispatch = 0;
|
|
alertlen = 2;
|
|
i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], &alertlen, 1, 0,
|
|
&written);
|
|
if (i <= 0) {
|
|
s->s3->alert_dispatch = 1;
|
|
} else {
|
|
/*
|
|
* Alert sent to BIO - now flush. If the message does not get sent due
|
|
* to non-blocking IO, we will not worry too much.
|
|
*/
|
|
(void)BIO_flush(s->wbio);
|
|
|
|
if (s->msg_callback)
|
|
s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
|
|
2, s, s->msg_callback_arg);
|
|
|
|
if (s->info_callback != NULL)
|
|
cb = s->info_callback;
|
|
else if (s->ctx->info_callback != NULL)
|
|
cb = s->ctx->info_callback;
|
|
|
|
if (cb != NULL) {
|
|
j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
|
|
cb(s, SSL_CB_WRITE_ALERT, j);
|
|
}
|
|
}
|
|
return i;
|
|
}
|