2 protocol.h -- header for protocol.c
3 Copyright (C) 1999 Ivo Timmermans <zarq@iname.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __TINC_PROTOCOL_H__
21 #define __TINC_PROTOCOL_H__
26 PROT_RESERVED = 0, /* reserved: do not use. */
30 PROT_CURRENT, /* protocol currently in use */
34 ACK = 1, /* acknowledged */
35 AUTH_S_INIT = 10, /* initiate authentication */
37 AUTH_S_SPP, /* send passphrase */
39 AUTH_S_SKEY, /* send g^k */
41 AUTH_S_SACK, /* send ack */
42 AUTH_C_RACK, /* waiting for ack */
43 TERMREQ = 30, /* terminate connection */
44 PINGTIMEOUT, /* terminate due to ping t.o. */
45 DEL_HOST, /* forward a termreq to others */
48 ADD_HOST = 60, /* Add new given host to connection list */
49 BASIC_INFO, /* some basic info follows */
50 PASSPHRASE, /* encrypted passphrase */
51 PUBLIC_KEY, /* public key in base-36 */
52 HOLD = 80, /* don't send any data */
53 RESUME, /* resume dataflow with new encryption key */
54 CALCULATE = 100, /* calculate the following numer^privkey and send me the result */
55 CALC_RES, /* result of the above */
56 ALMOST_KEY, /* this number^privkey is the shared key */
57 REQ_KEY = 160, /* request public key */
58 ANS_KEY, /* answer to such request */
59 KEY_CHANGED, /* public key has changed */
62 typedef struct add_host_t {
67 unsigned short portnr;
70 typedef struct termreq_t {
75 typedef struct basic_info_t {
77 unsigned char protocol;
78 unsigned short portnr;
83 typedef struct calculate_t {
89 typedef struct public_key_t {
95 typedef struct key_req_t {
100 short int len; /* 0 if requesting */
104 typedef struct key_changed_t {
109 typedef struct del_host_t {
114 extern int (*request_handlers[256])(conn_list_t*, unsigned char*, int);
116 extern int send_ping(conn_list_t*);
117 extern int send_basic_info(conn_list_t *);
118 extern int send_termreq(conn_list_t *);
119 extern int send_timeout(conn_list_t *);
120 extern int send_key_request(ip_t);
121 extern void send_key_changed2(void);
123 #endif /* __TINC_PROTOCOL_H__ */