X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.h;h=29839a29ee13b1b0e370031dd69b843186723c10;hp=983663494ed7cbf5931da61ece1e52f0edfa95fa;hb=116ba3b3da73fb857cf75b5c92c6aacd70d94dd9;hpb=8fa9bc017d89b53798903df3fa98311067d4de90 diff --git a/src/net.h b/src/net.h index 98366349..29839a29 100644 --- a/src/net.h +++ b/src/net.h @@ -1,6 +1,7 @@ /* net.h -- header for net.c - Copyright (C) 1998,1999,2000 Ivo Timmermans + Copyright (C) 1998-2002 Ivo Timmermans + 2000-2002 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 @@ -16,66 +17,78 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: net.h,v 1.9.4.20 2000/10/29 09:19:25 guus Exp $ + $Id: net.h,v 1.9.4.50 2002/06/08 12:57:09 guus Exp $ */ #ifndef __TINC_NET_H__ #define __TINC_NET_H__ +#include +#include +#include #include -#include "config.h" - -#define MAXSIZE 1700 /* should be a bit more than the MTU for the tapdevice */ -#define MTU 1600 - -#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] +#ifdef HAVE_STDINT_H + #include +#endif -#define IP_ADDR_S "%d.%d.%d.%d" +#include "config.h" -#ifdef WORDS_BIGENDIAN -# define IP_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \ - ((unsigned char*)&(x))[2],((unsigned char*)&(x))[3] +#ifdef ENABLE_JUMBOGRAMS + #define MTU 9014 /* 9000 bytes payload + 14 bytes ethernet header */ + #define MAXSIZE 9100 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */ + #define MAXBUFSIZE 9100 /* Must support TCP packets of length 9000. */ #else -# define IP_ADDR_V(x) ((unsigned char*)&(x))[3],((unsigned char*)&(x))[2], \ - ((unsigned char*)&(x))[1],((unsigned char*)&(x))[0] + #define MTU 1514 /* 1500 bytes payload + 14 bytes ethernet header */ + #define MAXSIZE 1600 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */ + #define MAXBUFSIZE 2100 /* Quite large but needed for support of keys up to 8192 bits. */ #endif -#define MAXBUFSIZE 4096 /* Probably way too much, but it must fit every possible request. */ +#define MAXSOCKETS 128 /* Overkill... */ -/* 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 MAXQUEUELENGTH 8 /* Maximum number of packats in a single queue */ typedef struct mac_t { - unsigned char x[6]; + uint8_t x[6]; } mac_t; -typedef unsigned long ipv4_t; +typedef struct ipv4_t +{ + uint8_t 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 { - unsigned short x[8]; + uint16_t x[8]; } ipv6_t; typedef unsigned short port_t; typedef short length_t; +typedef union { + struct sockaddr sa; + struct sockaddr_in in; + struct sockaddr_in6 in6; +} sockaddr_t; + +#ifdef SA_LEN +#define SALEN(s) SA_LEN(&s) +#else +#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6)) +#endif + typedef struct vpn_packet_t { - length_t len; /* the actual number of bytes in the `data' field */ - unsigned char data[MAXSIZE]; + length_t len; /* the actual number of bytes in the `data' field */ + int priority; /* priority or TOS */ + uint32_t seqno; /* 32 bits sequence number (network byte order of course) */ + uint8_t data[MAXSIZE]; } vpn_packet_t; typedef struct queue_element_t { @@ -89,36 +102,56 @@ typedef struct packet_queue_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; - -extern char *unknown; - -extern char *request_name[256]; -extern char *status_text[10]; - -#include "connlist.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 *); +typedef struct outgoing_t { + char *name; + int timeout; + struct config_t *cfg; + struct addrinfo *ai; + struct addrinfo *aip; +} outgoing_t; + +typedef struct listen_socket_t { + int tcp; + int udp; + sockaddr_t sa; +} listen_socket_t; + +extern int maxtimeout; +extern int seconds_till_retry; +extern int addressfamily; + +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 listen_socket_t listen_socket[MAXSOCKETS]; +extern int listen_sockets; +extern int keyexpires; +extern int keylifetime; +extern int do_prune; +extern int do_purge; +extern char *myport; +extern time_t now; + +extern void retry_outgoing(outgoing_t *); +extern void handle_incoming_vpn_data(int); +extern void finish_connecting(connection_t *); +extern void do_outgoing_connection(connection_t *); +extern int handle_new_meta_connection(int); +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 int setup_vpn_connection(conn_list_t *); -extern void terminate_connection(conn_list_t *); -extern void flush_queues(conn_list_t *); -extern int xrecv(vpn_packet_t *); -extern void add_queue(packet_queue_t **, void *, size_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__ */