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
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 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
17
18 if (sc == NULL)
19 return -1;
20
21 if (SSL_in_init(s) && !ossl_statem_get_in_handshake(sc)) {
22 i = sc->handshake_func(s);
23 if (i < 0)
24 return i;
25 if (i == 0) {
26 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
27 return -1;
28 }
29 }
30
31 if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
32 ERR_raise(ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
33 return -1;
34 }
35
36 return dtls1_write_bytes(sc, type, buf_, len, written);
37 }
38
dtls1_dispatch_alert(SSL * ssl)39 int dtls1_dispatch_alert(SSL *ssl)
40 {
41 int i, j;
42 void (*cb) (const SSL *ssl, int type, int val) = NULL;
43 unsigned char buf[DTLS1_AL_HEADER_LENGTH];
44 unsigned char *ptr = &buf[0];
45 size_t written;
46 SSL_CONNECTION *s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
47
48 if (s == NULL)
49 return 0;
50
51 s->s3.alert_dispatch = 0;
52
53 memset(buf, 0, sizeof(buf));
54 *ptr++ = s->s3.send_alert[0];
55 *ptr++ = s->s3.send_alert[1];
56
57 i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
58 if (i <= 0) {
59 s->s3.alert_dispatch = 1;
60 /* fprintf(stderr, "not done with alert\n"); */
61 } else {
62 (void)BIO_flush(s->wbio);
63
64 if (s->msg_callback)
65 s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3.send_alert,
66 2, ssl, s->msg_callback_arg);
67
68 if (s->info_callback != NULL)
69 cb = s->info_callback;
70 else if (ssl->ctx->info_callback != NULL)
71 cb = ssl->ctx->info_callback;
72
73 if (cb != NULL) {
74 j = (s->s3.send_alert[0] << 8) | s->s3.send_alert[1];
75 cb(ssl, SSL_CB_WRITE_ALERT, j);
76 }
77 }
78 return i;
79 }
80
