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1 | /* | |
2 | * Copyright 2005-2016 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_locl.h" | |
11 | ||
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 | ||
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 | if (s->s3->send_alert[0] == SSL3_AL_FATAL) | |
56 | (void)BIO_flush(s->wbio); | |
57 | ||
58 | if (s->msg_callback) | |
59 | s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert, | |
60 | 2, s, s->msg_callback_arg); | |
61 | ||
62 | if (s->info_callback != NULL) | |
63 | cb = s->info_callback; | |
64 | else if (s->ctx->info_callback != NULL) | |
65 | cb = s->ctx->info_callback; | |
66 | ||
67 | if (cb != NULL) { | |
68 | j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1]; | |
69 | cb(s, SSL_CB_WRITE_ALERT, j); | |
70 | } | |
71 | } | |
72 | return i; | |
73 | } |