2 net.h -- header for net.c
3 Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef __TINC_NET_H__
21 #define __TINC_NET_H__
28 #ifdef ENABLE_JUMBOGRAMS
29 #define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
31 #define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
34 /* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + padding + HMAC + compressor overhead */
35 #define MAXSIZE (MTU + 4 + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
37 /* MAXBUFSIZE is the maximum size of a request: enough for a MAXSIZEd packet or a 8192 bits RSA key */
38 #define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128)
40 #define MAXSOCKETS 8 /* Probably overkill... */
42 typedef struct vpn_packet_t {
47 uint16_t len; /* the actual number of bytes in the `data' field */
48 uint8_t data[MAXSIZE];
51 /* Packet types when using SPTPS */
53 #define PKT_COMPRESSED 1
56 typedef enum packet_type_t {
62 typedef struct listen_socket_t {
72 typedef struct outgoing_t {
75 struct splay_tree_t *config_tree;
82 extern list_t *outgoing_list;
84 extern int maxoutbufsize;
85 extern int seconds_till_retry;
86 extern int addressfamily;
87 extern unsigned replaywin;
88 extern bool localdiscovery;
89 extern sockaddr_t localdiscovery_address;
91 extern listen_socket_t listen_socket[MAXSOCKETS];
92 extern int listen_sockets;
93 extern int keylifetime;
94 extern int max_connection_burst;
97 extern int autoconnect;
98 extern bool disablebuggypeers;
99 extern int contradicting_add_edge;
100 extern int contradicting_del_edge;
101 extern time_t last_config_check;
103 extern char *proxyhost;
104 extern char *proxyport;
105 extern char *proxyuser;
106 extern char *proxypass;
107 typedef enum proxytype_t {
115 extern proxytype_t proxytype;
117 extern char *scriptinterpreter;
118 extern char *scriptextension;
120 /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
121 #include "connection.h"
124 extern void retry_outgoing(outgoing_t *);
125 extern void handle_incoming_vpn_data(void *, int);
126 extern void finish_connecting(struct connection_t *);
127 extern bool do_outgoing_connection(struct outgoing_t *);
128 extern void handle_new_meta_connection(void *, int);
129 extern int setup_listen_socket(const sockaddr_t *);
130 extern int setup_vpn_in_socket(const sockaddr_t *);
131 extern bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len);
132 extern bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t len);
133 extern void send_packet(struct node_t *, struct vpn_packet_t *);
134 extern void receive_tcppacket(struct connection_t *, const char *, int);
135 extern void broadcast_packet(const struct node_t *, struct vpn_packet_t *);
136 extern char *get_name(void);
137 extern bool setup_myself_reloadable(void);
138 extern bool setup_network(void);
139 extern void setup_outgoing_connection(struct outgoing_t *);
140 extern void try_outgoing_connections(void);
141 extern void close_network_connections(void);
142 extern int main_loop(void);
143 extern void terminate_connection(struct connection_t *, bool);
144 extern bool node_read_ecdsa_public_key(struct node_t *);
145 extern bool read_ecdsa_public_key(struct connection_t *);
146 extern void send_mtu_probe(struct node_t *);
147 extern void handle_device_data(void *, int);
148 extern void handle_meta_connection_data(struct connection_t *);
149 extern void regenerate_key(void);
150 extern void purge(void);
151 extern void retry(void);
152 extern int reload_configuration(void);
153 extern void load_all_subnets(void);
154 extern void load_all_nodes(void);
157 #define closesocket(s) close(s)
159 extern CRITICAL_SECTION mutex;
162 //TODO: move this to a better place
163 extern char *confbase;
165 #endif /* __TINC_NET_H__ */