2 connection.h -- header for connection.c
3 Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
4 2000-2005 Ivo Timmermans
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #ifndef __TINC_CONNECTION_H__
22 #define __TINC_CONNECTION_H__
27 #include "splay_tree.h"
29 #define OPTION_INDIRECT 0x0001
30 #define OPTION_TCPONLY 0x0002
31 #define OPTION_PMTU_DISCOVERY 0x0004
33 typedef struct connection_status_t {
34 int pinged:1; /* sent ping */
35 int active:1; /* 1 if active.. */
36 int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */
37 int termreq:1; /* the termination of this connection was requested */
38 int remove_unused:1; /* Set to 1 if you want this connection removed */
39 int timeout_unused:1; /* 1 if gotten timeout */
40 int encryptout:1; /* 1 if we can encrypt outgoing traffic */
41 int decryptin:1; /* 1 if we have to decrypt incoming traffic */
42 int mst:1; /* 1 if this connection is part of a minimum spanning tree */
45 } connection_status_t;
52 typedef struct connection_t {
53 char *name; /* name he claims to have */
55 union sockaddr_t address; /* his real (internet) ip */
56 char *hostname; /* the hostname of its real ip */
57 int protocol_version; /* used protocol */
59 int socket; /* socket used for this connection */
60 uint32_t options; /* options for this connection */
61 connection_status_t status; /* status info */
62 int estimated_weight; /* estimation for the weight of the edge for this connection */
63 struct timeval start; /* time this connection was started, used for above estimation */
64 struct outgoing_t *outgoing; /* used to keep track of outgoing connections */
66 struct node_t *node; /* node associated with the other end */
67 struct edge_t *edge; /* edge associated with this connection */
69 rsa_t rsa; /* his public/private key */
70 cipher_t incipher; /* Cipher he will use to send data to us */
71 cipher_t outcipher; /* Cipher we will use to send data to him */
80 char *hischallenge; /* The challenge we sent to him */
82 struct bufferevent *buffer; /* buffer events on this metadata connection */
83 struct event inevent; /* input event on this metadata connection */
84 int tcplen; /* length of incoming TCPpacket */
85 int allow_request; /* defined if there's only one request possible */
87 time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */
89 splay_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
92 extern splay_tree_t *connection_tree;
93 extern connection_t *broadcast;
95 extern void init_connections(void);
96 extern void exit_connections(void);
97 extern connection_t *new_connection(void) __attribute__ ((__malloc__));
98 extern void free_connection(connection_t *);
99 extern void connection_add(connection_t *);
100 extern void connection_del(connection_t *);
101 extern bool dump_connections(struct connection_t *);
102 extern bool read_connection_config(connection_t *);
104 #endif /* __TINC_CONNECTION_H__ */