1 /*
2 * Copyright 2005-2025 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 #include "internal/ssl_unwrap.h"
12
dtls1_write_app_data_bytes(SSL * s,uint8_t type,const void * buf_,size_t len,size_t * written)13 int dtls1_write_app_data_bytes(SSL *s, uint8_t type, const void *buf_,
14 size_t len, size_t *written)
15 {
16 int i;
17 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
18
19 if (sc == NULL)
20 return -1;
21
22 if (SSL_in_init(s) && !ossl_statem_get_in_handshake(sc)) {
23 i = sc->handshake_func(s);
24 if (i < 0)
25 return i;
26 if (i == 0) {
27 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
28 return -1;
29 }
30 }
31
32 if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
33 ERR_raise(ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
34 return -1;
35 }
36
37 return dtls1_write_bytes(sc, type, buf_, len, written);
38 }
39
dtls1_dispatch_alert(SSL * ssl)40 int dtls1_dispatch_alert(SSL *ssl)
41 {
42 int i, j;
43 void (*cb) (const SSL *ssl, int type, int val) = NULL;
44 unsigned char buf[DTLS1_AL_HEADER_LENGTH];
45 unsigned char *ptr = &buf[0];
46 size_t written;
47 SSL_CONNECTION *s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
48
49 if (s == NULL)
50 return 0;
51
52 s->s3.alert_dispatch = SSL_ALERT_DISPATCH_NONE;
53
54 memset(buf, 0, sizeof(buf));
55 *ptr++ = s->s3.send_alert[0];
56 *ptr++ = s->s3.send_alert[1];
57
58 i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), &written);
59 if (i <= 0) {
60 s->s3.alert_dispatch = 1;
61 /* fprintf(stderr, "not done with alert\n"); */
62 } else {
63 (void)BIO_flush(s->wbio);
64
65 if (s->msg_callback)
66 s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3.send_alert,
67 2, ssl, s->msg_callback_arg);
68
69 if (s->info_callback != NULL)
70 cb = s->info_callback;
71 else if (ssl->ctx->info_callback != NULL)
72 cb = ssl->ctx->info_callback;
73
74 if (cb != NULL) {
75 j = (s->s3.send_alert[0] << 8) | s->s3.send_alert[1];
76 cb(ssl, SSL_CB_WRITE_ALERT, j);
77 }
78 }
79 return i;
80 }
81