+#ifndef MESHLINK_NET_H
+#define MESHLINK_NET_H
+
/*
net.h -- header for net.c
- Copyright (C) 1998,1999,2000 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 2014, 2017 Guus Sliepen <guus@meshlink.io>
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
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 1.9.4.21 2000/11/04 22:57:31 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 <sys/time.h>
-
-#include "config.h"
-
-#define MAXSIZE 1700 /* should be a bit more than the MTU for the tapdevice */
-#define MTU 1600
+#include "event.h"
+#include "sockaddr.h"
-#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]
+#ifdef ENABLE_JUMBOGRAMS
+#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
#else
-# define IP_ADDR_V(x) ((unsigned char*)&(x))[3],((unsigned char*)&(x))[2], \
- ((unsigned char*)&(x))[1],((unsigned char*)&(x))[0]
+#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
#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
+/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + HMAC + compressor overhead */
+#define MAXSIZE (MTU + 4 + 32 + MTU/64 + 20)
-typedef struct mac_t
-{
- unsigned char x[6];
-} mac_t;
-
-typedef unsigned long ipv4_t;
-
-typedef ipv4_t ip_t; /* alias for ipv4_t */
-
-typedef struct ipv6_t
-{
- unsigned short x[8];
-} ipv6_t;
-
-typedef unsigned short port_t;
-
-typedef short length_t;
+/* 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 */
- 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;
-
-typedef struct packet_queue_t {
- 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 *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 *);
-extern int setup_network_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 void add_queue(packet_queue_t **, void *, size_t);
-
-#endif /* __TINC_NET_H__ */
+/* Packet types when using SPTPS */
+
+#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 {
+ 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;
+
+/* 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 void 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_tcp_listen_socket(struct meshlink_handle *mesh, const struct addrinfo *aip) __attribute__((__warn_unused_result__));
+extern int setup_udp_listen_socket(struct meshlink_handle *mesh, const struct addrinfo *aip) __attribute__((__warn_unused_result__));
+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) __attribute__((__warn_unused_result__));
+extern void send_packet(struct meshlink_handle *mesh, struct node_t *, struct vpn_packet_t *);
+extern char *get_name(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern void load_all_nodes(struct meshlink_handle *mesh);
+extern bool setup_myself_reloadable(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern bool setup_network(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern void reset_outgoing(struct outgoing_t *);
+extern void setup_outgoing_connection(struct meshlink_handle *mesh, struct outgoing_t *);
+extern void close_network_connections(struct meshlink_handle *mesh);
+extern void 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 *) __attribute__((__warn_unused_result__));
+extern bool node_read_from_config(struct meshlink_handle *mesh, struct node_t *, const config_t *config) __attribute__((__warn_unused_result__));
+extern bool read_ecdsa_public_key(struct meshlink_handle *mesh, struct connection_t *) __attribute__((__warn_unused_result__));
+extern bool read_ecdsa_private_key(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern bool node_write_config(struct meshlink_handle *mesh, struct node_t *) __attribute__((__warn_unused_result__));
+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);
+extern int check_port(struct meshlink_handle *mesh);
+
+#ifndef HAVE_MINGW
+#define closesocket(s) close(s)
+#endif
+
+#endif
projects / meshlink / blobdiff