tinc-vpn.org Git - tinc/blob - 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 1.1.2.34 2002/09/09 22:32:30 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 "config.h"
  36 #include "conf.h"
  37 #include <utils.h>
  38 #include "subnet.h"
  39
  40 #include "xalloc.h"
  41 #include "system.h"
  42
  43 avl_tree_t *connection_tree;    /* Meta connections */
  44 connection_t *broadcast;
  45
  46 int connection_compare(connection_t *a, connection_t *b)
  47 {
  48         return a - b;
  49 }
  50
  51 void init_connections(void)
  52 {
  53         cp();
  54
  55         connection_tree = avl_alloc_tree((avl_compare_t) connection_compare, NULL);
  56         broadcast = new_connection();
  57         broadcast->name = xstrdup(_("everyone"));
  58         broadcast->hostname = xstrdup(_("BROADCAST"));
  59 }
  60
  61 void exit_connections(void)
  62 {
  63         cp();
  64
  65         avl_delete_tree(connection_tree);
  66         free_connection(broadcast);
  67 }
  68
  69 connection_t *new_connection(void)
  70 {
  71         connection_t *c;
  72
  73         cp();
  74
  75         c = (connection_t *) xmalloc_and_zero(sizeof(connection_t));
  76
  77         if(!c)
  78                 return NULL;
  79
  80         gettimeofday(&c->start, NULL);
  81
  82         return c;
  83 }
  84
  85 void free_connection(connection_t *c)
  86 {
  87         cp();
  88
  89         if(c->hostname)
  90                 free(c->hostname);
  91
  92         if(c->inkey)
  93                 free(c->inkey);
  94
  95         if(c->outkey)
  96                 free(c->outkey);
  97
  98         if(c->mychallenge)
  99                 free(c->mychallenge);
 100
 101         if(c->hischallenge)
 102                 free(c->hischallenge);
 103
 104         free(c);
 105 }
 106
 107 void connection_add(connection_t *c)
 108 {
 109         cp();
 110
 111         avl_insert(connection_tree, c);
 112 }
 113
 114 void connection_del(connection_t *c)
 115 {
 116         cp();
 117
 118         avl_delete(connection_tree, c);
 119 }
 120
 121 void dump_connections(void)
 122 {
 123         avl_node_t *node;
 124         connection_t *c;
 125
 126         cp();
 127
 128         syslog(LOG_DEBUG, _("Connections:"));
 129
 130         for(node = connection_tree->head; node; node = node->next) {
 131                 c = (connection_t *) node->data;
 132                 syslog(LOG_DEBUG, _(" %s at %s options %lx socket %d status %04x"),
 133                            c->name, c->hostname, c->options, c->socket, c->status);
 134         }
 135
 136         syslog(LOG_DEBUG, _("End of connections."));
 137 }
 138
 139 int read_connection_config(connection_t *c)
 140 {
 141         char *fname;
 142         int x;
 143
 144         cp();
 145
 146         asprintf(&fname, "%s/hosts/%s", confbase, c->name);
 147         x = read_config_file(c->config_tree, fname);
 148         free(fname);
 149
 150         return x;
 151 }