2 connection.h -- header for connection.c
3 Copyright (C) 2000-2003 Guus Sliepen <guus@sliepen.eu.org>,
4 2000-2003 Ivo Timmermans <ivo@o2w.nl>
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
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: connection.h,v 1.1.2.40 2003/12/20 21:25:17 guus Exp $
23 #ifndef __TINC_CONNECTION_H__
24 #define __TINC_CONNECTION_H__
26 #include <gnutls/gnutls.h>
30 #define OPTION_INDIRECT 0x0001
31 #define OPTION_TCPONLY 0x0002
32 #define OPTION_PMTU_DISCOVERY 0x0004
34 typedef struct connection_status_t {
35 int pinged:1; /* sent ping */
36 int active:1; /* 1 if active.. */
37 int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */
38 int termreq:1; /* the termination of this connection was requested */
39 int remove:1; /* Set to 1 if you want this connection removed */
40 int timeout:1; /* 1 if gotten timeout */
41 int encryptout:1; /* 1 if we can encrypt outgoing traffic */
42 int decryptin:1; /* 1 if we have to decrypt incoming traffic */
43 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 long int options; /* options for this connection */
61 struct 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 gnutls_session session;
70 gnutls_certificate_credentials credentials;
72 char buffer[MAXBUFSIZE]; /* metadata input buffer */
73 int buflen; /* bytes read into buffer */
74 int reqlen; /* length of incoming request */
75 int tcplen; /* length of incoming TCPpacket */
76 int allow_request; /* defined if there's only one request possible */
78 time_t last_ping_time; /* last time we saw some activity from the other end */
80 avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
83 extern avl_tree_t *connection_tree;
84 extern connection_t *broadcast;
86 extern void init_connections(void);
87 extern void exit_connections(void);
88 extern connection_t *new_connection(void) __attribute__ ((__malloc__));
89 extern void free_connection(connection_t *);
90 extern void connection_add(connection_t *);
91 extern void connection_del(connection_t *);
92 extern void dump_connections(void);
93 extern bool read_connection_config(connection_t *);
95 #endif /* __TINC_CONNECTION_H__ */