99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*
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net.h -- header for net.c
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Copyright (C) 1998-2001 Ivo Timmermans <zarq@iname.com>
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2000,2001 Guus Sliepen <guus@sliepen.warande.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: net.h,v 1.9.4.37 2001/11/16 12:08:38 zarq Exp $
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*/
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#ifndef __TINC_NET_H__
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#define __TINC_NET_H__
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#include <sys/time.h>
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#include "config.h"
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#define MAXSIZE 1700 /* should be a bit more than the MTU for the tapdevice */
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#define MTU 1600
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#define SALTLEN 2 /* to spice things up for the NSA... */
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#define MAC_ADDR_S "%02x:%02x:%02x:%02x:%02x:%02x"
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#define MAC_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \
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((unsigned char*)&(x))[2],((unsigned char*)&(x))[3], \
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((unsigned char*)&(x))[4],((unsigned char*)&(x))[5]
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#define IP_ADDR_S "%d.%d.%d.%d"
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#ifdef WORDS_BIGENDIAN
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# define IP_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \
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((unsigned char*)&(x))[2],((unsigned char*)&(x))[3]
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#else
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# define IP_ADDR_V(x) ((unsigned char*)&(x))[3],((unsigned char*)&(x))[2], \
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((unsigned char*)&(x))[1],((unsigned char*)&(x))[0]
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#endif
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#define MAXBUFSIZE 4096 /* Probably way too much, but it must fit every possible request. */
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/* tap types */
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#define TAP_TYPE_ETHERTAP 0
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#define TAP_TYPE_TUNTAP 1
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typedef struct mac_t
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{
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unsigned char x[6];
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} mac_t;
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typedef short length_t;
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typedef struct vpn_packet_t {
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length_t len; /* the actual number of bytes in the `data' field */
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unsigned char salt[SALTLEN]; /* two bytes of randomness */
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unsigned char data[MAXSIZE];
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} vpn_packet_t;
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typedef struct queue_element_t {
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void *packet;
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struct queue_element_t *prev;
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struct queue_element_t *next;
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} queue_element_t;
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typedef struct packet_queue_t {
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queue_element_t *head;
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queue_element_t *tail;
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} packet_queue_t;
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extern int maxtimeout;
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extern int seconds_till_retry;
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extern char *request_name[256];
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extern char *status_text[10];
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#include "connection.h" /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
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extern void send_packet(struct node_t *, vpn_packet_t *);
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extern void receive_packet(struct node_t *, vpn_packet_t *);
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extern void receive_tcppacket(struct connection_t *, char *, int);
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extern void broadcast_packet(struct node_t *, vpn_packet_t *);
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extern int setup_network_connections(void);
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extern void close_network_connections(void);
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extern void main_loop(void);
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extern void terminate_connection(connection_t *, int);
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extern void flush_queue(struct node_t *);
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extern int read_rsa_public_key(struct connection_t *);
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extern RETSIGTYPE try_outgoing_connections(int);
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#endif /* __TINC_NET_H__ */
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