X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnet.h;h=ff32b73c9181e6746240dcc982782800d99fa313;hb=8d4ac42ceb67a93fc1e5c0d045819597c5da47d0;hp=0dc81817b4ed6d4c6f94ca4dec8f3f360cd4db5c;hpb=c2b738e7b51fbec2b11fbbf030b9a5a36df55fc4;p=meshlink diff --git a/src/net.h b/src/net.h index 0dc81817..4da61bd4 100644 --- a/src/net.h +++ b/src/net.h @@ -1,7 +1,9 @@ +#ifndef MESHLINK_NET_H +#define MESHLINK_NET_H + /* net.h -- header for net.c - Copyright (C) 1998-2002 Ivo Timmermans - 2000-2002 Guus Sliepen + Copyright (C) 2014, 2017 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 @@ -13,128 +15,99 @@ 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: net.h,v 1.9.4.44 2002/03/01 12:26:56 guus Exp $ + 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., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_NET_H__ -#define __TINC_NET_H__ - -#include -#include -#include -#include - -#include "config.h" - -#define MTU 1514 /* 1500 bytes payload + 14 bytes ethernet header */ -#define MAXSIZE 1600 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */ - -#define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */ -#define MAXSOCKETS 128 /* Overkill... */ - -typedef struct mac_t -{ - unsigned char x[6]; -} mac_t; - -typedef struct ipv4_t -{ - unsigned char x[4]; -} ipv4_t; - -typedef struct ip_mask_t { - ipv4_t address; - ipv4_t mask; -} ip_mask_t; - -typedef struct ipv6_t -{ - unsigned short x[8]; -} ipv6_t; +#include "event.h" +#include "sockaddr.h" -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) +#ifdef ENABLE_JUMBOGRAMS +#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #else -#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6)) +#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #endif +/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + HMAC + compressor overhead */ +#define MAXSIZE (MTU + 4 + 32 + MTU/64 + 20) + +/* MAXBUFSIZE is the maximum size of a request: enough for a MAXSIZEd packet or a 8192 bits RSA key */ +#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) + typedef struct vpn_packet_t { - length_t len; /* the actual number of bytes in the `data' field */ - int priority; /* priority or TOS */ - unsigned int seqno; /* 32 bits sequence number (network byte order of course) */ - unsigned char data[MAXSIZE]; + uint16_t probe: 1; + int16_t tcp: 1; + uint16_t len; /* the actual number of bytes in the `data' field */ + uint8_t data[MAXSIZE]; } vpn_packet_t; -typedef struct queue_element_t { - void *packet; - struct queue_element_t *prev; - struct queue_element_t *next; -} queue_element_t; +/* Packet types when using SPTPS */ -typedef struct packet_queue_t { - queue_element_t *head; - queue_element_t *tail; -} packet_queue_t; +#define PKT_COMPRESSED 1 +#define PKT_PROBE 4 + +typedef enum packet_type_t { + PACKET_NORMAL, + PACKET_COMPRESSED, + PACKET_PROBE +} packet_type_t; + +#include "conf.h" +#include "list.h" typedef struct outgoing_t { - char *name; - int timeout; - struct config_t *cfg; - struct addrinfo *ai; - struct addrinfo *aip; + struct node_t *node; + enum { + OUTGOING_START, + OUTGOING_CANONICAL, + OUTGOING_RECENT, + OUTGOING_KNOWN, + OUTGOING_END, + OUTGOING_NO_KNOWN_ADDRESSES, + } state; + int timeout; + timeout_t ev; + struct addrinfo *ai; + struct addrinfo *aip; } outgoing_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 int tcp_socket[MAXSOCKETS]; -extern int udp_socket[MAXSOCKETS]; -extern int tcp_sockets; -extern int udp_sockets; -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(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 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__ */ +/* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */ +#include "connection.h" +#include "node.h" + +extern void init_outgoings(struct meshlink_handle *mesh); +extern void exit_outgoings(struct meshlink_handle *mesh); + +extern void retry_outgoing(struct meshlink_handle *mesh, outgoing_t *); +extern void handle_incoming_vpn_data(struct event_loop_t *loop, void *, int); +extern void finish_connecting(struct meshlink_handle *mesh, struct connection_t *); +extern bool do_outgoing_connection(struct meshlink_handle *mesh, struct outgoing_t *); +extern void handle_new_meta_connection(struct event_loop_t *loop, void *, int); +extern int setup_listen_socket(const sockaddr_t *); +extern int setup_vpn_in_socket(struct meshlink_handle *mesh, const sockaddr_t *); +extern bool send_sptps_data(void *handle, uint8_t type, const void *data, size_t len); +extern bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len); +extern void send_packet(struct meshlink_handle *mesh, struct node_t *, struct vpn_packet_t *); +extern char *get_name(struct meshlink_handle *mesh); +extern void load_all_nodes(struct meshlink_handle *mesh); +extern bool setup_myself_reloadable(struct meshlink_handle *mesh); +extern bool setup_network(struct meshlink_handle *mesh); +extern void setup_outgoing_connection(struct meshlink_handle *mesh, struct outgoing_t *); +extern void close_network_connections(struct meshlink_handle *mesh); +extern int main_loop(struct meshlink_handle *mesh); +extern void terminate_connection(struct meshlink_handle *mesh, struct connection_t *, bool); +extern bool node_read_public_key(struct meshlink_handle *mesh, struct node_t *); +extern bool node_read_from_config(struct meshlink_handle *mesh, struct node_t *, const config_t *config); +extern bool read_ecdsa_public_key(struct meshlink_handle *mesh, struct connection_t *); +extern bool read_ecdsa_private_key(struct meshlink_handle *mesh); +extern bool node_write_config(struct meshlink_handle *mesh, struct node_t *); +extern void send_mtu_probe(struct meshlink_handle *mesh, struct node_t *); +extern void handle_meta_connection_data(struct meshlink_handle *mesh, struct connection_t *); +extern void retry(struct meshlink_handle *mesh); + +#ifndef HAVE_MINGW +#define closesocket(s) close(s) +#endif + +#endif