/*
net.h -- header for net.c
- Copyright (C) 1998-2001 Ivo Timmermans <zarq@iname.com>
- 2000,2001 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1998-2002 Ivo Timmermans <zarq@iname.com>
+ 2000-2002 Guus Sliepen <guus@sliepen.warande.net>
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.h,v 1.9.4.28 2001/02/27 16:37:28 guus Exp $
+ $Id: net.h,v 1.9.4.41 2002/02/20 22:37:38 guus Exp $
*/
#ifndef __TINC_NET_H__
#define __TINC_NET_H__
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
#include <sys/time.h>
#include "config.h"
-#define MAXSIZE 1700 /* should be a bit more than the MTU for the tapdevice */
-#define MTU 1600
+#define MTU 1514 /* 1500 bytes payload + 14 bytes ethernet header */
+#define MAXSIZE 1600 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
-#define MAC_ADDR_S "%02x:%02x:%02x:%02x:%02x:%02x"
-#define MAC_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \
- ((unsigned char*)&(x))[2],((unsigned char*)&(x))[3], \
- ((unsigned char*)&(x))[4],((unsigned char*)&(x))[5]
-
-#define IP_ADDR_S "%d.%d.%d.%d"
-
-#ifdef WORDS_BIGENDIAN
-# define IP_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \
- ((unsigned char*)&(x))[2],((unsigned char*)&(x))[3]
-#else
-# define IP_ADDR_V(x) ((unsigned char*)&(x))[3],((unsigned char*)&(x))[2], \
- ((unsigned char*)&(x))[1],((unsigned char*)&(x))[0]
-#endif
-
-#define MAXBUFSIZE 4096 /* Probably way too much, but it must fit every possible request. */
-
-/* flags */
-#define INDIRECTDATA 0x0001 /* Used to indicate that this host has to be reached indirect */
-#define EXPORTINDIRECTDATA 0x0002 /* Used to indicate uplink that it has to tell others to do INDIRECTDATA */
-#define TCPONLY 0x0004 /* Tells sender to send packets over TCP instead of UDP (for firewalls) */
-
-/* tap types */
-#define TAP_TYPE_ETHERTAP 0
-#define TAP_TYPE_TUNTAP 1
+#define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */
typedef struct mac_t
{
unsigned char x[6];
} mac_t;
-typedef unsigned long ipv4_t;
+typedef struct ipv4_t
+{
+ unsigned char x[4];
+} ipv4_t;
-typedef ipv4_t ip_t; /* alias for ipv4_t */
+typedef struct ip_mask_t {
+ ipv4_t address;
+ ipv4_t mask;
+} ip_mask_t;
typedef struct ipv6_t
{
typedef short length_t;
+typedef union {
+ struct sockaddr sa;
+ struct sockaddr_in in;
+ struct sockaddr_in6 in6;
+} sockaddr_t;
+
+#ifdef HAVE_LINUX
+ #define SALEN(s) sizeof(sockaddr_t)
+#else
+ #define SALEN(s) (s.sa_len)
+#endif
+
typedef struct vpn_packet_t {
- length_t len; /* the actual number of bytes in the `data' field */
+ length_t len; /* the actual number of bytes in the `data' field */
+ unsigned int seqno; /* 32 bits sequence number (network byte order of course) */
unsigned char data[MAXSIZE];
} vpn_packet_t;
queue_element_t *tail;
} packet_queue_t;
-typedef struct enc_key_t {
- int length;
- char *key;
- time_t expiry;
-} enc_key_t;
-
-extern int tap_fd;
-
-extern int total_tap_in;
-extern int total_tap_out;
-extern int total_socket_in;
-extern int total_socket_out;
+typedef struct outgoing_t {
+ char *name;
+ int timeout;
+ struct config_t *cfg;
+ struct addrinfo *ai;
+ struct addrinfo *aip;
+} outgoing_t;
-extern char *unknown;
+extern int maxtimeout;
+extern int seconds_till_retry;
+extern int addressfamily;
-extern char *request_name[256];
-extern char *status_text[10];
+extern char *request_name[];
+extern char *status_text[];
#include "connection.h" /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
-extern int str2opt(const char *);
-extern char *opt2str(int);
-extern int send_packet(ip_t, vpn_packet_t *);
-extern int receive_packet(connection_t *, vpn_packet_t *);
+extern int tcp_socket;
+extern int udp_socket;
+extern int keyexpires;
+extern int keylifetime;
+extern int do_prune;
+extern int do_purge;
+extern char *myport;
+
+extern void retry_outgoing(outgoing_t *);
+extern void handle_incoming_vpn_data(void);
+extern void finish_connecting(connection_t *);
+extern void do_outgoing_connection(connection_t *);
+extern int handle_new_meta_connection(void);
+extern int setup_listen_socket(sockaddr_t *);
+extern int setup_vpn_in_socket(sockaddr_t *);
+extern void send_packet(struct node_t *, vpn_packet_t *);
+extern void receive_packet(struct node_t *, vpn_packet_t *);
+extern void receive_tcppacket(struct connection_t *, char *, int);
+extern void broadcast_packet(struct node_t *, vpn_packet_t *);
extern int setup_network_connections(void);
+extern void setup_outgoing_connection(struct outgoing_t *);
+extern void try_outgoing_connections(void);
extern void close_network_connections(void);
extern void main_loop(void);
-extern void terminate_connection(connection_t *);
-extern void flush_queue(connection_t *);
-
-#include <config.h>
-#ifdef HAVE_OPENSSL_RSA_H
-# include <openssl/rsa.h>
-#else
-# include <rsa.h>
-#endif
-
-extern int read_rsa_public_key(connection_t *);
+extern void terminate_connection(connection_t *, int);
+extern void flush_queue(struct node_t *);
+extern int read_rsa_public_key(struct connection_t *);
#endif /* __TINC_NET_H__ */
projects / tinc / blobdiff