X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.h;h=2a1e79ef3fbfcff2889045f246a5b5ff552751b9;hp=2547b1eaeb902c70b0dd974595e98da37446c998;hb=30c0381d71d333a99f6c83ff9d03ef4a0857f423;hpb=e9635ae38e0e2e3eb92568a1e234f8348856dd69 diff --git a/src/net.h b/src/net.h index 2547b1ea..2a1e79ef 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 @@ -16,129 +17,131 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: net.h,v 1.9.4.16 2000/10/14 17:04:15 guus Exp $ + $Id: net.h,v 1.9.4.61 2003/07/07 11:11:33 guus Exp $ */ #ifndef __TINC_NET_H__ #define __TINC_NET_H__ -#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] +#include +#include +#include +#include +#include -#define IP_ADDR_S "%d.%d.%d.%d" +#ifdef HAVE_INTTYPES_H +#include +#endif -#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 */ #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 */ #endif -#define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */ +#define MAXSIZE (MTU + 4 + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + MTU/64 + 20) /* MTU + seqno + padding + HMAC + compressor overhead */ +#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) /* Enough room for a request with a MAXSIZEd packet or a 8192 bits RSA key */ -/* 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) */ +#define MAXSOCKETS 128 /* Overkill... */ -typedef struct mac_t -{ - unsigned char x[6]; -} mac_t; +#define MAXQUEUELENGTH 8 /* Maximum number of packats in a single queue */ -typedef unsigned long ipv4_t; +typedef struct mac_t { + uint8_t x[6]; +} mac_t; -typedef ipv4_t ip_t; /* alias for ipv4_t */ +typedef struct ipv4_t { + uint8_t x[4]; +} ipv4_t; -typedef struct ipv6_t -{ - unsigned short x[8]; +typedef struct ipv6_t { + 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; +#ifdef HAVE_STRUCT_SOCKADDR_STORAGE + struct sockaddr_storage storage; +#endif +} 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 passphrase_t { - unsigned short len; - unsigned char *phrase; -} passphrase_t; - -typedef struct status_bits_t { - int pinged:1; /* sent ping */ - int got_pong:1; /* received pong */ - int meta:1; /* meta connection exists */ - int active:1; /* 1 if active.. */ - int outgoing:1; /* I myself asked for this conn */ - int termreq:1; /* the termination of this connection was requested */ - int remove:1; /* Set to 1 if you want this connection removed */ - int timeout:1; /* 1 if gotten timeout */ - int validkey:1; /* 1 if we currently have a valid key for him */ - int waitingforkey:1; /* 1 if we already sent out a request */ - int dataopen:1; /* 1 if we have a valid UDP connection open */ - int encryptout:1; /* 1 if we can encrypt outgoing traffic */ - int decryptin:1; /* 1 if we have to decrypt incoming traffic */ - int unused:18; -} status_bits_t; - -typedef struct option_bits_t { - int unused:32; -} option_bits_t; - typedef struct queue_element_t { - void *packet; - struct queue_element_t *prev; - struct queue_element_t *next; + void *packet; + struct queue_element_t *prev; + struct queue_element_t *next; } queue_element_t; typedef struct packet_queue_t { - queue_element_t *head; - queue_element_t *tail; + queue_element_t *head; + 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 *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; + +#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 EVP_CIPHER_CTX packet_ctx; + +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_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__ */ +#endif /* __TINC_NET_H__ */