Don't wait for dry at the end of a handshake
[openssl.git] / ssl / d1_msg.c
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 }