Remove some #if 0 code in ssl, crypto/bio
[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 #define USE_SOCKETS
11 #include "ssl_locl.h"
12
13 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
14                                size_t *written)
15 {
16     int i;
17
18 #ifndef OPENSSL_NO_SCTP
19     /*
20      * Check if we have to continue an interrupted handshake for reading
21      * belated app data with SCTP.
22      */
23     if ((SSL_in_init(s) && !ossl_statem_get_in_handshake(s)) ||
24         (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
25          ossl_statem_in_sctp_read_sock(s)))
26 #else
27     if (SSL_in_init(s) && !ossl_statem_get_in_handshake(s))
28 #endif
29     {
30         i = s->handshake_func(s);
31         if (i < 0)
32             return (i);
33         if (i == 0) {
34             SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES,
35                    SSL_R_SSL_HANDSHAKE_FAILURE);
36             return -1;
37         }
38     }
39
40     if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
41         SSLerr(SSL_F_DTLS1_WRITE_APP_DATA_BYTES, SSL_R_DTLS_MESSAGE_TOO_BIG);
42         return -1;
43     }
44
45     return dtls1_write_bytes(s, type, buf_, len, written);
46 }
47
48 int dtls1_dispatch_alert(SSL *s)
49 {
50     int i, j;
51     void (*cb) (const SSL *ssl, int type, int val) = NULL;
52     unsigned char buf[DTLS1_AL_HEADER_LENGTH];
53     unsigned char *ptr = &buf[0];
54     size_t written;
55
56     s->s3->alert_dispatch = 0;
57
58     memset(buf, 0, sizeof(buf));
59     *ptr++ = s->s3->send_alert[0];
60     *ptr++ = s->s3->send_alert[1];
61
62 #ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
63     if (s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE) {
64         s2n(s->d1->handshake_read_seq, ptr);
65         l2n3(s->d1->r_msg_hdr.frag_off, ptr);
66     }
67 #endif
68
69     i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
70     if (i <= 0) {
71         s->s3->alert_dispatch = 1;
72         /* fprintf( stderr, "not done with alert\n" ); */
73     } else {
74         if (s->s3->send_alert[0] == SSL3_AL_FATAL
75 #ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
76             || s->s3->send_alert[1] == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
77 #endif
78             )
79             (void)BIO_flush(s->wbio);
80
81         if (s->msg_callback)
82             s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
83                             2, s, s->msg_callback_arg);
84
85         if (s->info_callback != NULL)
86             cb = s->info_callback;
87         else if (s->ctx->info_callback != NULL)
88             cb = s->ctx->info_callback;
89
90         if (cb != NULL) {
91             j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
92             cb(s, SSL_CB_WRITE_ALERT, j);
93         }
94     }
95     return i;
96 }