3 /*********************************************************************
7 * Purpose : File with TLS/SSL extension. Contains methods for
8 * creating, using and closing TLS/SSL connections.
10 * Copyright : Written by and Copyright (c) 2017 Vaclav Svec. FIT CVUT.
12 * This program is free software; you can redistribute it
13 * and/or modify it under the terms of the GNU General
14 * Public License as published by the Free Software
15 * Foundation; either version 2 of the License, or (at
16 * your option) any later version.
18 * This program is distributed in the hope that it will
19 * be useful, but WITHOUT ANY WARRANTY; without even the
20 * implied warranty of MERCHANTABILITY or FITNESS FOR A
21 * PARTICULAR PURPOSE. See the GNU General Public
22 * License for more details.
24 * The GNU General Public License should be included with
25 * this file. If not, you can view it at
26 * http://www.gnu.org/copyleft/gpl.html
27 * or write to the Free Software Foundation, Inc., 59
28 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 *********************************************************************/
34 /* Boolean functions to get information about TLS/SSL connections */
35 extern int client_use_ssl(const struct client_state *csp);
36 extern int server_use_ssl(const struct client_state *csp);
37 extern size_t is_ssl_pending(struct ssl_attr *ssl_attr);
38 extern int tunnel_established_successfully(const char *response, unsigned int response_len);
40 /* Functions for sending and receiving data over TLS/SSL connections */
41 extern int ssl_send_data(struct ssl_attr *ssl_attr, const unsigned char *buf, size_t len);
42 extern int ssl_send_data_delayed(struct ssl_attr *ssl_attr, const unsigned char *buf,
43 size_t len, unsigned int delay);
44 extern int ssl_recv_data(struct ssl_attr *ssl_attr, unsigned char *buf, size_t maxLen);
45 extern long ssl_flush_socket(struct ssl_attr *ssl_attr, struct iob *iob);
46 extern void ssl_send_certificate_error(struct client_state *csp);
48 /* Functions for opening and closing TLS/SSL connections */
49 extern int create_client_ssl_connection(struct client_state *csp);
50 extern int create_server_ssl_connection(struct client_state *csp);
51 extern void close_client_and_server_ssl_connections(struct client_state *csp);
52 extern void close_server_ssl_connection(struct client_state *csp);
53 extern void close_client_ssl_connection(struct client_state *csp);
55 /* misc helper functions */
56 extern int ssl_base64_encode(unsigned char *dst, size_t dlen, size_t *olen,
57 const unsigned char *src, size_t slen );
58 extern void ssl_crt_verify_info(char *buf, size_t size, struct client_state *csp);
59 extern void ssl_release(void);
61 #endif /* ndef SSL_H_INCLUDED */