1/*
2 * Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
8 */
9
10#include "ssl_local.h"
11
12int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
13                               size_t *written)
14{
15    int i;
16
17    if (SSL_in_init(s) && !ossl_statem_get_in_handshake(s)) {
18        i = s->handshake_func(s);
19        if (i < 0)
20            return i;
21        if (i == 0) {
22            ERR_raise(ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
23            return -1;
24        }
25    }
26
27    if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
28        ERR_raise(ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
29        return -1;
30    }
31
32    return dtls1_write_bytes(s, type, buf_, len, written);
33}
34
35int dtls1_dispatch_alert(SSL *s)
36{
37    int i, j;
38    void (*cb) (const SSL *ssl, int type, int val) = NULL;
39    unsigned char buf[DTLS1_AL_HEADER_LENGTH];
40    unsigned char *ptr = &buf[0];
41    size_t written;
42
43    s->s3.alert_dispatch = 0;
44
45    memset(buf, 0, sizeof(buf));
46    *ptr++ = s->s3.send_alert[0];
47    *ptr++ = s->s3.send_alert[1];
48
49    i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
50    if (i <= 0) {
51        s->s3.alert_dispatch = 1;
52        /* fprintf( stderr, "not done with alert\n" ); */
53    } else {
54        (void)BIO_flush(s->wbio);
55
56        if (s->msg_callback)
57            s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3.send_alert,
58                            2, s, s->msg_callback_arg);
59
60        if (s->info_callback != NULL)
61            cb = s->info_callback;
62        else if (s->ctx->info_callback != NULL)
63            cb = s->ctx->info_callback;
64
65        if (cb != NULL) {
66            j = (s->s3.send_alert[0] << 8) | s->s3.send_alert[1];
67            cb(s, SSL_CB_WRITE_ALERT, j);
68        }
69    }
70    return i;
71}
72