1 #ifndef MESHLINK_CONNECTION_H
2 #define MESHLINK_CONNECTION_H
5 connection.h -- header for connection.c
6 Copyright (C) 2000-2013, 2017 Guus Sliepen <guus@meshlink.io>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 #define OPTION_INDIRECT 0x0001
28 #define OPTION_TCPONLY 0x0002
29 #define OPTION_PMTU_DISCOVERY 0x0004
30 #define OPTION_CLAMP_MSS 0x0008
31 #define OPTION_VERSION(x) ((x) >> 24) /* Top 8 bits are for protocol minor version */
33 typedef struct connection_status_t {
34 uint16_t pinged: 1; /* sent ping */
35 uint16_t active: 1; /* 1 if active.. */
36 uint16_t connecting: 1; /* 1 if we are waiting for a non-blocking connect() to finish */
38 uint16_t control: 1; /* 1 if this is a control connection */
39 uint16_t pcap: 1; /* 1 if this is a control connection requesting packet capture */
40 uint16_t log: 1; /* 1 if this is a control connection requesting log dump */
41 uint16_t invitation: 1; /* 1 if this is an invitation */
42 uint16_t invitation_used: 1; /* 1 if the invitation has been consumed */
43 uint16_t initiator: 1; /* 1 if we initiated this connection */
44 } connection_status_t;
50 typedef struct connection_t {
51 char *name; /* name he claims to have */
52 struct node_t *node; /* node associated with the other end */
54 connection_status_t status; /* status info */
55 int socket; /* socket used for this connection */
56 union sockaddr_t address; /* his real (internet) ip */
58 struct meshlink_handle *mesh; /* the mesh this connection belongs to */
62 struct buffer_t inbuf;
63 struct buffer_t outbuf;
64 io_t io; /* input/output event on this metadata connection */
65 int tcplen; /* length of incoming TCPpacket */
66 int allow_request; /* defined if there's only one request possible */
67 time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */
68 time_t last_key_renewal; /* last time we renewed the SPTPS key */
70 struct outgoing_t *outgoing; /* used to keep track of outgoing connections */
72 // Only used during authentication
73 ecdsa_t *ecdsa; /* his public ECDSA key */
74 int protocol_major; /* used protocol */
75 int protocol_minor; /* used protocol */
78 void init_connections(struct meshlink_handle *mesh);
79 void exit_connections(struct meshlink_handle *mesh);
80 connection_t *new_connection(void) __attribute__((__malloc__));
81 void free_connection(connection_t *);
82 void connection_add(struct meshlink_handle *mesh, connection_t *);
83 void connection_del(struct meshlink_handle *mesh, connection_t *);