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