1 #ifndef MESHLINK_INTERNAL_H
2 #define MESHLINK_INTERNAL_H
5 meshlink_internal.h -- Internal parts of the public API.
6 Copyright (C) 2014-2019 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.
24 #error You must not include both meshlink.h and meshlink_internal.h!
32 #include "meshlink_queue.h"
38 #define MAXSOCKETS 4 /* Probably overkill... */
40 static const char meshlink_invitation_label[] = "MeshLink invitation";
41 static const char meshlink_tcp_label[] = "MeshLink TCP";
42 static const char meshlink_udp_label[] = "MeshLink UDP";
44 #define MESHLINK_CONFIG_VERSION 1
45 #define MESHLINK_INVITATION_VERSION 1
48 struct CattaSServiceBrowser;
49 struct CattaSimplePoll;
50 struct CattaSEntryGroup;
52 typedef struct listen_socket_t {
59 typedef enum proxytype_t {
67 struct meshlink_open_params {
79 /// A handle for an instance of MeshLink.
80 struct meshlink_handle {
86 pthread_mutex_t mesh_mutex;
89 meshlink_log_cb_t log_cb;
90 meshlink_log_level_t log_level;
92 // The most important network-related members come first
94 listen_socket_t listen_socket[MAXSOCKETS];
96 meshlink_receive_cb_t receive_cb;
97 meshlink_queue_t outpacketqueue;
100 hash_t *node_udp_cache;
102 struct splay_tree_t *nodes;
103 struct splay_tree_t *edges;
105 struct list_t *connections;
106 struct list_t *outgoings;
107 struct list_t *submeshes;
109 // Meta-connection-related members
110 struct splay_tree_t *past_request_tree;
111 timeout_t past_request_timeout;
113 int connection_burst;
114 int contradicting_add_edge;
115 int contradicting_del_edge;
117 time_t connection_burst_time;
118 time_t last_config_check;
119 time_t last_hard_try;
121 timeout_t periodictimer;
123 struct connection_t *everyone;
128 // Infrequently used callbacks
129 meshlink_node_status_cb_t node_status_cb;
130 meshlink_channel_accept_cb_t channel_accept_cb;
131 meshlink_node_duplicate_cb_t node_duplicate_cb;
132 meshlink_connection_try_cb_t connection_try_cb;
138 struct ecdsa *private_key;
139 struct ecdsa *invitation_key;
143 int invitation_timeout;
144 int pinginterval; /* seconds between pings */
145 int pingtimeout; /* seconds to wait for response */
151 bool default_blacklist;
152 bool discovery; // Whether Catta is enabled or not
163 pthread_mutex_t discovery_mutex;
164 pthread_cond_t discovery_cond;
166 bool discovery_threadstarted;
169 pthread_t discovery_thread;
170 struct CattaServer *catta_server;
171 struct CattaSServiceBrowser *catta_browser;
172 struct CattaSimplePoll *catta_poll;
173 struct CattaSEntryGroup *catta_group;
174 char *catta_servicetype;
175 unsigned int catta_interfaces;
177 // State used for meshlink_join()
179 char cookie[18], hash[18];
188 // Proxy configuration, currently not exposed.
193 proxytype_t proxytype;
196 /// A handle for a MeshLink node.
197 struct meshlink_node {
202 /// A handle for a node Sub-Mesh.
203 struct meshlink_submesh {
209 struct meshlink_channel {
213 struct utcp_connection *c;
214 meshlink_channel_receive_cb_t receive_cb;
215 meshlink_channel_poll_cb_t poll_cb;
218 /// Header for data packets routed between nodes
219 typedef struct meshlink_packethdr {
220 uint8_t destination[16];
222 } __attribute__((__packed__)) meshlink_packethdr_t;
224 extern void meshlink_send_from_queue(event_loop_t *el, meshlink_handle_t *mesh);
225 extern void update_node_status(meshlink_handle_t *mesh, struct node_t *n);
226 extern meshlink_log_level_t global_log_level;
227 extern meshlink_log_cb_t global_log_cb;
228 extern int check_port(meshlink_handle_t *mesh);
229 extern void handle_duplicate_node(meshlink_handle_t *mesh, struct node_t *n);
230 extern void handle_network_change(meshlink_handle_t *mesh, bool online);
232 /// Device class traits
234 unsigned int min_connects;
235 unsigned int max_connects;
237 } dev_class_traits_t;
239 extern const dev_class_traits_t dev_class_traits[];