/* protocol.h -- header for protocol.c Copyright (C) 1999-2001 Ivo Timmermans , 2000,2001 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. $Id: protocol.h,v 1.5.4.45 2003/11/17 15:30:18 guus Exp $ */ #ifndef __TINC_PROTOCOL_H__ #define __TINC_PROTOCOL_H__ /* Protocol version. Different versions are incompatible, incompatible version have different protocols. */ #define PROT_CURRENT 17 /* Silly Windows */ #ifdef ERROR #undef ERROR #endif /* Request numbers */ typedef enum request_t { ALL = -1, /* Guardian for allow_request */ ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK, STATUS, ERROR, TERMREQ, PING, PONG, ADD_SUBNET, DEL_SUBNET, ADD_EDGE, DEL_EDGE, KEY_CHANGED, REQ_KEY, ANS_KEY, PACKET, LAST /* Guardian for the highest request number */ } request_t; typedef struct past_request_t { char *request; time_t firstseen; } past_request_t; extern bool tunnelserver; /* Maximum size of strings in a request */ #define MAX_STRING_SIZE 2048 #define MAX_STRING "%2048s" #include "edge.h" #include "net.h" #include "node.h" #include "subnet.h" /* Basic functions */ extern bool send_request(struct connection_t *, const char *, ...) __attribute__ ((__format__(printf, 2, 3))); extern void forward_request(struct connection_t *); extern bool receive_request(struct connection_t *); extern bool check_id(const char *); extern void init_requests(void); extern void exit_requests(void); extern bool seen_request(char *); extern void age_past_requests(void); /* Requests */ extern bool send_id(struct connection_t *); extern bool send_metakey(struct connection_t *); extern bool send_challenge(struct connection_t *); extern bool send_chal_reply(struct connection_t *); extern bool send_ack(struct connection_t *); extern bool send_status(struct connection_t *, int, const char *); extern bool send_error(struct connection_t *, int,const char *); extern bool send_termreq(struct connection_t *); extern bool send_ping(struct connection_t *); extern bool send_pong(struct connection_t *); extern bool send_add_subnet(struct connection_t *, const struct subnet_t *); extern bool send_del_subnet(struct connection_t *, const struct subnet_t *); extern bool send_add_edge(struct connection_t *, const struct edge_t *); extern bool send_del_edge(struct connection_t *, const struct edge_t *); extern bool send_key_changed(struct connection_t *, const struct node_t *); extern bool send_req_key(struct connection_t *, const struct node_t *, const struct node_t *); extern bool send_ans_key(struct connection_t *, const struct node_t *, const struct node_t *); extern bool send_tcppacket(struct connection_t *, struct vpn_packet_t *); /* Request handlers */ extern bool id_h(struct connection_t *); extern bool metakey_h(struct connection_t *); extern bool challenge_h(struct connection_t *); extern bool chal_reply_h(struct connection_t *); extern bool ack_h(struct connection_t *); extern bool status_h(struct connection_t *); extern bool error_h(struct connection_t *); extern bool termreq_h(struct connection_t *); extern bool ping_h(struct connection_t *); extern bool pong_h(struct connection_t *); extern bool add_subnet_h(struct connection_t *); extern bool del_subnet_h(struct connection_t *); extern bool add_edge_h(struct connection_t *); extern bool del_edge_h(struct connection_t *); extern bool key_changed_h(struct connection_t *); extern bool req_key_h(struct connection_t *); extern bool ans_key_h(struct connection_t *); extern bool tcppacket_h(struct connection_t *); #endif /* __TINC_PROTOCOL_H__ */