A local copy of OpenSSL from GitHub
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/*
* Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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_local.h"
int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
size_t *written)
{
int i;
if (SSL_in_init(s) && !ossl_statem_get_in_handshake(s)) {
i = s->handshake_func(s);
if (i < 0)
return i;
if (i == 0) {
ERR_raise(ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
return -1;
}
}
if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
ERR_raise(ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
return -1;
}
return dtls1_write_bytes(s, type, buf_, len, written);
}
int dtls1_dispatch_alert(SSL *s)
{
int i, j;
void (*cb) (const SSL *ssl, int type, int val) = NULL;
unsigned char buf[DTLS1_AL_HEADER_LENGTH];
unsigned char *ptr = &buf[0];
size_t written;
s->s3.alert_dispatch = 0;
memset(buf, 0, sizeof(buf));
*ptr++ = s->s3.send_alert[0];
*ptr++ = s->s3.send_alert[1];
i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
if (i <= 0) {
s->s3.alert_dispatch = 1;
/* fprintf( stderr, "not done with alert\n" ); */
} else {
(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;
}