2 protocol.h -- header for protocol.c
3 Copyright (C) 1999-2001 Ivo Timmermans <ivo@o2w.nl>,
4 2000,2001 Guus Sliepen <guus@sliepen.eu.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: protocol.h,v 1.5.4.38 2003/07/06 23:16:28 guus Exp $
23 #ifndef __TINC_PROTOCOL_H__
24 #define __TINC_PROTOCOL_H__
31 /* Protocol version. Different versions are incompatible,
32 incompatible version have different protocols.
35 #define PROT_CURRENT 17
40 ALL = -1, /* Guardian for allow_request */
41 ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK,
42 STATUS, ERROR, TERMREQ,
44 ADD_SUBNET, DEL_SUBNET,
46 KEY_CHANGED, REQ_KEY, ANS_KEY,
48 LAST /* Guardian for the highest request number */
51 typedef struct past_request_t {
56 /* Maximum size of strings in a request */
58 #define MAX_STRING_SIZE 2048
59 #define MAX_STRING "%2048s"
63 extern int send_request(connection_t *, const char *, ...) __attribute__ ((format(printf, 2, 3)));
64 extern int forward_request(connection_t *);
65 extern int receive_request(connection_t *);
66 extern int check_id(char *);
68 extern void init_requests(void);
69 extern void exit_requests(void);
70 extern int seen_request(char *);
71 extern void age_past_requests(void);
75 extern int send_id(connection_t *);
76 extern int send_metakey(connection_t *);
77 extern int send_challenge(connection_t *);
78 extern int send_chal_reply(connection_t *);
79 extern int send_ack(connection_t *);
80 extern int send_status(connection_t *, int, char *);
81 extern int send_error(connection_t *, int, char *);
82 extern int send_termreq(connection_t *);
83 extern int send_ping(connection_t *);
84 extern int send_pong(connection_t *);
85 extern int send_add_subnet(connection_t *, subnet_t *);
86 extern int send_del_subnet(connection_t *, subnet_t *);
87 extern int send_add_edge(connection_t *, edge_t *);
88 extern int send_del_edge(connection_t *, edge_t *);
89 extern int send_key_changed(connection_t *, node_t *);
90 extern int send_req_key(connection_t *, node_t *, node_t *);
91 extern int send_ans_key(connection_t *, node_t *, node_t *);
92 extern int send_tcppacket(connection_t *, vpn_packet_t *);
94 /* Request handlers */
96 extern int id_h(connection_t *);
97 extern int metakey_h(connection_t *);
98 extern int challenge_h(connection_t *);
99 extern int chal_reply_h(connection_t *);
100 extern int ack_h(connection_t *);
101 extern int status_h(connection_t *);
102 extern int error_h(connection_t *);
103 extern int termreq_h(connection_t *);
104 extern int ping_h(connection_t *);
105 extern int pong_h(connection_t *);
106 extern int add_subnet_h(connection_t *);
107 extern int del_subnet_h(connection_t *);
108 extern int add_edge_h(connection_t *);
109 extern int del_edge_h(connection_t *);
110 extern int key_changed_h(connection_t *);
111 extern int req_key_h(connection_t *);
112 extern int ans_key_h(connection_t *);
113 extern int tcppacket_h(connection_t *);
115 #endif /* __TINC_PROTOCOL_H__ */