/*
net.h -- header for net.c
Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2016 Guus Sliepen <guus@tinc-vpn.org>
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
#include "ipv6.h"
#include "cipher.h"
#include "digest.h"
+#include "event.h"
#ifdef ENABLE_JUMBOGRAMS
-#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
+#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
#else
-#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
+#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
#endif
-#define MAXSIZE (MTU + 4 + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_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 */
+/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + srcid + dstid + padding + HMAC + compressor overhead */
+#define MAXSIZE (MTU + 4 + sizeof(node_id_t) + sizeof(node_id_t) + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
-#define MAXSOCKETS 8 /* Probably overkill... */
+/* 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)
+
+#define MAXSOCKETS 8 /* Probably overkill... */
typedef struct mac_t {
uint8_t x[6];
uint16_t x[8];
} ipv6_t;
+typedef struct node_id_t {
+ uint8_t x[6];
+} node_id_t;
+
typedef short length_t;
+typedef uint32_t seqno_t;
#define AF_UNKNOWN 255
#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6))
#endif
+#define SEQNO(x) ((x)->data + (x)->offset - 4)
+#define SRCID(x) ((node_id_t *)((x)->data + (x)->offset - 6))
+#define DSTID(x) ((node_id_t *)((x)->data + (x)->offset - 12))
+#define DATA(x) ((x)->data + (x)->offset)
+#define DEFAULT_PACKET_OFFSET 12
+
typedef struct vpn_packet_t {
- 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) */
+ length_t len; /* The actual number of valid bytes in the `data' field (including seqno or dstid/srcid) */
+ length_t offset; /* Offset in the buffer where the packet data starts (righter after seqno or dstid/srcid) */
+ int priority; /* priority or TOS */
uint8_t data[MAXSIZE];
} vpn_packet_t;
+/* Packet types when using SPTPS */
+
+#define PKT_COMPRESSED 1
+#define PKT_MAC 2
+#define PKT_PROBE 4
+
+typedef enum packet_type_t {
+ PACKET_NORMAL,
+ PACKET_COMPRESSED,
+ PACKET_PROBE
+} packet_type_t;
+
typedef struct listen_socket_t {
- struct event ev_tcp;
- struct event ev_udp;
- int tcp;
- int udp;
+ io_t tcp;
+ io_t udp;
sockaddr_t sa;
+ bool bindto;
+ int priority;
} listen_socket_t;
#include "conf.h"
typedef struct outgoing_t {
char *name;
int timeout;
+ splay_tree_t *config_tree;
struct config_t *cfg;
struct addrinfo *ai;
struct addrinfo *aip;
- struct event ev;
+ timeout_t ev;
} outgoing_t;
extern list_t *outgoing_list;
extern int seconds_till_retry;
extern int addressfamily;
extern unsigned replaywin;
+extern bool localdiscovery;
+
+extern bool udp_discovery;
+extern int udp_discovery_keepalive_interval;
+extern int udp_discovery_interval;
+extern int udp_discovery_timeout;
+
+extern int mtu_info_interval;
+extern int udp_info_interval;
extern listen_socket_t listen_socket[MAXSOCKETS];
extern int listen_sockets;
+extern io_t unix_socket;
extern int keylifetime;
extern int udp_rcvbuf;
extern int udp_sndbuf;
+extern int max_connection_burst;
extern bool do_prune;
extern char *myport;
+extern bool device_standby;
+extern bool autoconnect;
+extern bool disablebuggypeers;
extern int contradicting_add_edge;
extern int contradicting_del_edge;
+extern time_t last_config_check;
+
+extern char *proxyhost;
+extern char *proxyport;
+extern char *proxyuser;
+extern char *proxypass;
+typedef enum proxytype_t {
+ PROXY_NONE = 0,
+ PROXY_SOCKS4,
+ PROXY_SOCKS4A,
+ PROXY_SOCKS5,
+ PROXY_HTTP,
+ PROXY_EXEC,
+} proxytype_t;
+extern proxytype_t proxytype;
+
+extern char *scriptinterpreter;
+extern char *scriptextension;
/* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
#include "connection.h"
#include "node.h"
extern void retry_outgoing(outgoing_t *);
-extern void handle_incoming_vpn_data(int, short, void *);
+extern void handle_incoming_vpn_data(void *, int);
extern void finish_connecting(struct connection_t *);
-extern bool do_outgoing_connection(struct connection_t *);
-extern void handle_new_meta_connection(int, short, void *);
+extern bool do_outgoing_connection(struct outgoing_t *);
+extern void handle_new_meta_connection(void *, int);
+extern void handle_new_unix_connection(void *, int);
extern int setup_listen_socket(const sockaddr_t *);
extern int setup_vpn_in_socket(const sockaddr_t *);
+extern bool send_sptps_data(node_t *to, node_t *from, int 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 node_t *, vpn_packet_t *);
extern void receive_tcppacket(struct connection_t *, const char *, int);
+extern bool receive_tcppacket_sptps(struct connection_t *, const char *, int);
extern void broadcast_packet(const struct node_t *, vpn_packet_t *);
+extern char *get_name(void);
+extern void device_enable(void);
+extern void device_disable(void);
+extern bool setup_myself_reloadable(void);
extern bool setup_network(void);
extern void setup_outgoing_connection(struct outgoing_t *);
extern void try_outgoing_connections(void);
extern void close_network_connections(void);
extern int main_loop(void);
extern void terminate_connection(struct connection_t *, bool);
-extern void flush_queue(struct node_t *);
extern bool node_read_ecdsa_public_key(struct node_t *);
extern bool read_ecdsa_public_key(struct connection_t *);
extern bool read_rsa_public_key(struct connection_t *);
-extern void send_mtu_probe(struct node_t *);
-extern void handle_device_data(int, short, void *);
-extern void handle_meta_connection_data(int, short, void *);
+extern void handle_device_data(void *, int);
+extern void handle_meta_connection_data(struct connection_t *);
extern void regenerate_key(void);
extern void purge(void);
extern void retry(void);
extern int reload_configuration(void);
extern void load_all_subnets(void);
+extern void load_all_nodes(void);
+extern void try_tx(struct node_t *n, bool);
#ifndef HAVE_MINGW
#define closesocket(s) close(s)
-#else
-extern CRITICAL_SECTION mutex;
#endif
-#endif /* __TINC_NET_H__ */
+#endif /* __TINC_NET_H__ */
projects / tinc / blobdiff