e4e8fad81c6bf6087b15f20dbcf229fa2324e06c
[tinc] / src / connection.c
1 /*
2     connection.c -- connection list management
3     Copyright (C) 2000-2002 Guus Sliepen <guus@sliepen.eu.org>,
4                   2000-2002 Ivo Timmermans <ivo@o2w.nl>
5
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.
10
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.
15
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.
19
20     $Id: connection.c,v 1.1.2.36 2003/06/25 20:55:05 guus Exp $
21 */
22
23 #include "config.h"
24
25 #include <stdio.h>
26 #include <syslog.h>
27 #include <string.h>
28 #include <sys/time.h>
29
30 #include <avl_tree.h>
31 #include <list.h>
32
33 #include "net.h"                                /* Don't ask. */
34 #include "netutl.h"
35 #include "conf.h"
36 #include <utils.h>
37 #include "subnet.h"
38
39 #include "xalloc.h"
40 #include "system.h"
41
42 avl_tree_t *connection_tree;    /* Meta connections */
43 connection_t *broadcast;
44
45 int connection_compare(connection_t *a, connection_t *b)
46 {
47         return (void *)a - (void *)b;
48 }
49
50 void init_connections(void)
51 {
52         cp();
53
54         connection_tree = avl_alloc_tree((avl_compare_t) connection_compare, NULL);
55         broadcast = new_connection();
56         broadcast->name = xstrdup(_("everyone"));
57         broadcast->hostname = xstrdup(_("BROADCAST"));
58 }
59
60 void exit_connections(void)
61 {
62         cp();
63
64         avl_delete_tree(connection_tree);
65         free_connection(broadcast);
66 }
67
68 connection_t *new_connection(void)
69 {
70         connection_t *c;
71
72         cp();
73
74         c = (connection_t *) xmalloc_and_zero(sizeof(connection_t));
75
76         if(!c)
77                 return NULL;
78
79         gettimeofday(&c->start, NULL);
80
81         return c;
82 }
83
84 void free_connection(connection_t *c)
85 {
86         cp();
87
88         if(c->hostname)
89                 free(c->hostname);
90
91         if(c->inkey)
92                 free(c->inkey);
93
94         if(c->outkey)
95                 free(c->outkey);
96
97         if(c->mychallenge)
98                 free(c->mychallenge);
99
100         if(c->hischallenge)
101                 free(c->hischallenge);
102
103         free(c);
104 }
105
106 void connection_add(connection_t *c)
107 {
108         cp();
109
110         avl_insert(connection_tree, c);
111 }
112
113 void connection_del(connection_t *c)
114 {
115         cp();
116
117         avl_delete(connection_tree, c);
118 }
119
120 void dump_connections(void)
121 {
122         avl_node_t *node;
123         connection_t *c;
124
125         cp();
126
127         syslog(LOG_DEBUG, _("Connections:"));
128
129         for(node = connection_tree->head; node; node = node->next) {
130                 c = (connection_t *) node->data;
131                 syslog(LOG_DEBUG, _(" %s at %s options %lx socket %d status %04x"),
132                            c->name, c->hostname, c->options, c->socket, c->status);
133         }
134
135         syslog(LOG_DEBUG, _("End of connections."));
136 }
137
138 int read_connection_config(connection_t *c)
139 {
140         char *fname;
141         int x;
142
143         cp();
144
145         asprintf(&fname, "%s/hosts/%s", confbase, c->name);
146         x = read_config_file(c->config_tree, fname);
147         free(fname);
148
149         return x;
150 }