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 1.1.2.38 2003/07/06 23:16:28 guus Exp $
  21 */
  22
  23 #include "config.h"
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <sys/time.h>
  28
  29 #include <avl_tree.h>
  30 #include <list.h>
  31
  32 #include "net.h"                                /* Don't ask. */
  33 #include "netutl.h"
  34 #include "conf.h"
  35 #include <utils.h>
  36 #include "subnet.h"
  37 #include "logger.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 static 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         logger(DEBUG_ALWAYS, LOG_DEBUG, _("Connections:"));
 128
 129         for(node = connection_tree->head; node; node = node->next) {
 130                 c = (connection_t *) node->data;
 131                 logger(DEBUG_ALWAYS, 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         logger(DEBUG_ALWAYS, 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 }