tinc/src/connection.c

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/*
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connection.c -- connection list management
Copyright (C) 2000-2006 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include "system.h"
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#include "avl_tree.h"
#include "conf.h"
#include "list.h"
#include "logger.h"
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#include "net.h" /* Don't ask. */
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#include "netutl.h"
#include "subnet.h"
#include "utils.h"
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#include "xalloc.h"
avl_tree_t *connection_tree; /* Meta connections */
connection_t *broadcast;
static int connection_compare(const connection_t *a, const connection_t *b)
{
return (void *)a - (void *)b;
}
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void init_connections(void)
{
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cp();
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connection_tree = avl_alloc_tree((avl_compare_t) connection_compare, (avl_action_t) free_connection);
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broadcast = new_connection();
broadcast->name = xstrdup(_("everyone"));
broadcast->hostname = xstrdup(_("BROADCAST"));
}
void exit_connections(void)
{
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cp();
avl_delete_tree(connection_tree);
free_connection(broadcast);
}
connection_t *new_connection(void)
{
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connection_t *c;
cp();
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c = xmalloc_and_zero(sizeof(connection_t));
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if(!c)
return NULL;
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gettimeofday(&c->start, NULL);
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return c;
}
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void free_connection(connection_t *c)
{
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cp();
if(c->hostname)
free(c->hostname);
if(c->inkey)
free(c->inkey);
if(c->outkey)
free(c->outkey);
if(c->mychallenge)
free(c->mychallenge);
if(c->hischallenge)
free(c->hischallenge);
free(c);
}
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void connection_add(connection_t *c)
{
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cp();
avl_insert(connection_tree, c);
}
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void connection_del(connection_t *c)
{
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cp();
avl_delete(connection_tree, c);
}
void dump_connections(void)
{
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avl_node_t *node;
connection_t *c;
cp();
logger(LOG_DEBUG, _("Connections:"));
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for(node = connection_tree->head; node; node = node->next) {
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c = node->data;
logger(LOG_DEBUG, _(" %s at %s options %lx socket %d status %04x outbuf %d/%d/%d"),
c->name, c->hostname, c->options, c->socket, *(uint32_t *)&c->status,
c->outbufsize, c->outbufstart, c->outbuflen);
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}
logger(LOG_DEBUG, _("End of connections."));
}
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bool read_connection_config(connection_t *c)
{
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char *fname;
int x;
cp();
asprintf(&fname, "%s/hosts/%s", confbase, c->name);
x = read_config_file(c->config_tree, fname);
free(fname);
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return x == 0;
}