1 /*
2 * Copyright 2005-2019 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10 #include "ssl_local.h"
11
dtls1_write_app_data_bytes(SSL * s,int type,const void * buf_,size_t len,size_t * written)12 int 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 SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES,
23 SSL_R_SSL_HANDSHAKE_FAILURE);
24 return -1;
25 }
26 }
27
28 if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
29 SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES, SSL_R_DTLS_MESSAGE_TOO_BIG);
30 return -1;
31 }
32
33 return dtls1_write_bytes(s, type, buf_, len, written);
34 }
35
dtls1_dispatch_alert(SSL * s)36 int dtls1_dispatch_alert(SSL *s)
37 {
38 int i, j;
39 void (*cb) (const SSL *ssl, int type, int val) = NULL;
40 unsigned char buf[DTLS1_AL_HEADER_LENGTH];
41 unsigned char *ptr = &buf[0];
42 size_t written;
43
44 s->s3->alert_dispatch = 0;
45
46 memset(buf, 0, sizeof(buf));
47 *ptr++ = s->s3->send_alert[0];
48 *ptr++ = s->s3->send_alert[1];
49
50 i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
51 if (i <= 0) {
52 s->s3->alert_dispatch = 1;
53 /* fprintf( stderr, "not done with alert\n" ); */
54 } else {
55 (void)BIO_flush(s->wbio);
56
57 if (s->msg_callback)
58 s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
59 2, s, s->msg_callback_arg);
60
61 if (s->info_callback != NULL)
62 cb = s->info_callback;
63 else if (s->ctx->info_callback != NULL)
64 cb = s->ctx->info_callback;
65
66 if (cb != NULL) {
67 j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
68 cb(s, SSL_CB_WRITE_ALERT, j);
69 }
70 }
71 return i;
72 }
73