/*
connection.c -- connection list management
- Copyright (C) 2000,2001 Guus Sliepen <guus@sliepen.warande.net>,
- 2000,2001 Ivo Timmermans <itimmermans@bigfoot.com>
+ Copyright (C) 2000-2004 Guus Sliepen <guus@tinc-vpn.org>,
+ 2000-2004 Ivo Timmermans <ivo@tinc-vpn.org>
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: connection.c,v 1.1.2.14 2001/07/20 20:25:10 guus Exp $
+ $Id$
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <syslog.h>
-#include <string.h>
-
-#include <avl_tree.h>
-#include <list.h>
+#include "system.h"
-#include "net.h" /* Don't ask. */
-#include "netutl.h"
-#include "config.h"
+#include "avl_tree.h"
#include "conf.h"
-#include <utils.h>
+#include "list.h"
+#include "logger.h"
+#include "net.h" /* Don't ask. */
+#include "netutl.h"
#include "subnet.h"
-
+#include "utils.h"
#include "xalloc.h"
-#include "system.h"
-
-/* Root of the connection list */
avl_tree_t *connection_tree; /* Meta connections */
-avl_tree_t *active_tree; /* Activated hosts, sorted by address and port */
-avl_tree_t *id_tree; /* Activated hosts, sorted by name */
-avl_tree_t *prune_tree; /* connection_t structures which have to be freed */
-
-/* Pointer to connection describing myself */
-
-connection_t *myself = NULL;
-
-/* Initialization and callbacks */
+connection_t *broadcast;
-int connection_compare(connection_t *a, connection_t *b)
+static int connection_compare(const connection_t *a, const connection_t *b)
{
- return a->meta_socket - b->meta_socket;
+ return (void *)a - (void *)b;
}
-int active_compare(connection_t *a, connection_t *b)
+void init_connections(void)
{
- ipv4_t result;
+ cp();
- result = a->address - b->address;
- if(result)
- return result;
- else
- return a->port - b->port;
+ connection_tree = avl_alloc_tree((avl_compare_t) connection_compare, (avl_action_t) free_connection);
+ broadcast = new_connection();
+ broadcast->name = xstrdup(_("everyone"));
+ broadcast->hostname = xstrdup(_("BROADCAST"));
}
-int id_compare(connection_t *a, connection_t *b)
+void exit_connections(void)
{
- return strcmp(a->name, b->name);
-}
+ cp();
-int prune_compare(connection_t *a, connection_t *b)
-{
- if(a < b)
- return -1;
- else if(a > b)
- return 1;
- else
- return 0;
+ avl_delete_tree(connection_tree);
+ free_connection(broadcast);
}
-void init_connections(void)
+connection_t *new_connection(void)
{
- connection_tree = avl_alloc_tree((avl_compare_t)connection_compare, NULL);
- active_tree = avl_alloc_tree((avl_compare_t)active_compare, NULL);
- id_tree = avl_alloc_tree((avl_compare_t)id_compare, NULL);
- prune_tree = avl_alloc_tree((avl_compare_t)prune_compare, (avl_action_t)free_connection);
-}
+ connection_t *c;
-/* Creation and deletion of connection elements */
+ cp();
-connection_t *new_connection(void)
-{
- connection_t *p = (connection_t *)xmalloc_and_zero(sizeof(*p));
-cp
- p->subnet_tree = avl_alloc_tree((avl_compare_t)subnet_compare, NULL);
- p->queue = list_alloc((list_action_t)free);
-cp
- return p;
-}
+ c = xmalloc_and_zero(sizeof(connection_t));
-void free_connection(connection_t *p)
-{
-cp
- if(p->queue)
- list_delete_list(p->queue);
- if(p->name)
- free(p->name);
- if(p->hostname)
- free(p->hostname);
- if(p->rsa_key)
- RSA_free(p->rsa_key);
- if(p->cipher_pktkey)
- free(p->cipher_pktkey);
- if(p->buffer)
- free(p->buffer);
- if(p->config)
- clear_config(&p->config);
- free(p);
-cp
+ if(!c)
+ return NULL;
+
+ gettimeofday(&c->start, NULL);
+
+ return c;
}
-/*
- Free all trees.
-*/
-void destroy_trees(void)
+void free_connection(connection_t *c)
{
-cp
- avl_delete_tree(id_tree);
- avl_delete_tree(active_tree);
- avl_delete_tree(connection_tree);
- avl_delete_tree(prune_tree);
-cp
-}
+ cp();
-/* Connection management */
+ if(c->hostname)
+ free(c->hostname);
-void connection_add(connection_t *cl)
-{
-cp
- avl_insert(connection_tree, cl);
-cp
-}
+ if(c->inkey)
+ free(c->inkey);
-void connection_del(connection_t *cl)
-{
-cp
- active_del(cl);
+ if(c->outkey)
+ free(c->outkey);
- if(cl->status.meta)
- avl_delete(connection_tree, cl);
-cp
-}
+ if(c->mychallenge)
+ free(c->mychallenge);
-void active_add(connection_t *cl)
-{
-cp
- avl_insert(active_tree, cl);
- avl_insert(id_tree, cl);
- cl->status.active = 1;
-cp
-}
+ if(c->hischallenge)
+ free(c->hischallenge);
-void active_del(connection_t *cl)
-{
-cp
- if(cl->status.active)
- {
- avl_delete(id_tree, cl);
- avl_delete(active_tree, cl);
- cl->status.active = 0;
- }
-cp
+ free(c);
}
-void id_add(connection_t *cl)
+void connection_add(connection_t *c)
{
-cp
- avl_insert(id_tree, cl);
-cp
+ cp();
+
+ avl_insert(connection_tree, c);
}
-void prune_add(connection_t *cl)
+void connection_del(connection_t *c)
{
-cp
- avl_insert(prune_tree, cl);
-cp
+ cp();
+
+ avl_delete(connection_tree, c);
}
-void prune_flush(void)
+void dump_connections(void)
{
- avl_node_t *node, *next;
-cp
- for(node = prune_tree->head; node; node = next)
- {
- next = node->next;
- avl_delete_node(prune_tree, node);
- }
-cp
-}
+ avl_node_t *node;
+ connection_t *c;
-/* Lookup functions */
+ cp();
-connection_t *lookup_active(ipv4_t address, short unsigned int port)
-{
- connection_t cl;
-cp
- cl.address = address;
- cl.port = port;
+ logger(LOG_DEBUG, _("Connections:"));
- return avl_search(active_tree, &cl);
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+ logger(LOG_DEBUG, _(" %s at %s options %lx socket %d status %04x"),
+ c->name, c->hostname, c->options, c->socket, *(uint32_t *)&c->status);
+ }
+
+ logger(LOG_DEBUG, _("End of connections."));
}
-connection_t *lookup_id(char *name)
+bool read_connection_config(connection_t *c)
{
- connection_t cl, *p;
-cp
- cl.name = name;
- p = avl_search(id_tree, &cl);
- if(p)
- return p;
- else
- return NULL;
-}
+ char *fname;
+ int x;
-/* Debugging */
+ cp();
-void dump_connection_list(void)
-{
- avl_node_t *node;
- connection_t *cl;
-cp
- syslog(LOG_DEBUG, _("Connection list:"));
-
- for(node = connection_tree->head; node; node = node->next)
- {
- cl = (connection_t *)node->data;
- syslog(LOG_DEBUG, _(" %s at %s port %hd options %ld sockets %d, %d status %04x"),
- cl->name, cl->hostname, cl->port, cl->options,
- cl->socket, cl->meta_socket, cl->status);
- }
-
- syslog(LOG_DEBUG, _("Known hosts:"));
-
- for(node = id_tree->head; node; node = node->next)
- {
- cl = (connection_t *)node->data;
- syslog(LOG_DEBUG, _(" %s at %s port %hd options %ld sockets %d, %d status %04x"),
- cl->name, cl->hostname, cl->port, cl->options,
- cl->socket, cl->meta_socket, cl->status);
- }
-
- syslog(LOG_DEBUG, _("End of connection list."));
-cp
-}
+ asprintf(&fname, "%s/hosts/%s", confbase, c->name);
+ x = read_config_file(c->config_tree, fname);
+ free(fname);
-int read_host_config(connection_t *cl)
-{
- char *fname;
- int x;
-cp
- asprintf(&fname, "%s/hosts/%s", confbase, cl->name);
- x = read_config_file(&cl->config, fname);
- free(fname);
-cp
- return x;
+ return x == 0;
}
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