/*
connection.c -- connection list management
- Copyright (C) 2000 Guus Sliepen <guus@sliepen.warande.net>,
- 2000 Ivo Timmermans <itimmermans@bigfoot.com>
+ Copyright (C) 2000-2007 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: connection.c,v 1.1.2.5 2000/11/22 22:18:03 guus Exp $
+ $Id$
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <syslog.h>
-
-#include <rbl.h>
+#include "system.h"
-#include "net.h" /* Don't ask. */
-#include "netutl.h"
-#include "config.h"
+#include "splay_tree.h"
+#include "cipher.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 */
+splay_tree_t *connection_tree; /* Meta connections */
+connection_t *broadcast;
-rbltree_t *connection_tree;
-rbltree_t *id_tree;
-
-connection_t *myself = NULL;
+static int connection_compare(const connection_t *a, const connection_t *b) {
+ return a < b ? -1 : a == b ? 0 : 1;
+}
-/* Initialization and callbacks */
+void init_connections(void) {
+ cp();
-int connection_compare(connection_t *a, connection_t *b)
-{
- ipv4_t result;
- result = a->address - b->address;
- if(result)
- return result;
- else
- return a->port - b->port;
+ connection_tree = splay_alloc_tree((splay_compare_t) connection_compare, (splay_action_t) free_connection);
+ broadcast = new_connection();
+ broadcast->name = xstrdup(_("everyone"));
+ broadcast->hostname = xstrdup(_("BROADCAST"));
}
-int id_compare(connection_t *a, connection_t *b)
-{
- return strcmp(a->name, b->name);
+void exit_connections(void) {
+ cp();
+
+ splay_delete_tree(connection_tree);
+ free_connection(broadcast);
}
-void init_connections(void)
-{
- connection_tree = new_rbltree((rbl_compare_t)connection_compare, (rbl_action_t)free_connection);
- id_tree = new_rbltree((rbl_compare_t)id_compare, NULL);
+connection_t *new_connection(void) {
+ cp();
+
+ return xmalloc_and_zero(sizeof(connection_t));
}
-/* Creation and deletion of connection elements */
+void free_connection(connection_t *c) {
+ cp();
-connection_t *new_connection(void)
-{
- connection_t *p = (connection_t *)xmalloc(sizeof(*p));
-cp
- /* initialise all those stupid pointers at once */
- memset(p, '\0', sizeof(*p));
+ if(!c)
+ return;
- p->subnet_tree = new_rbltree((rbl_compare_t)subnet_compare, NULL);
-cp
- return p;
-}
+ if(c->name)
+ free(c->name);
-void free_connection(connection_t *p)
-{
-cp
- if(p->sq)
- destroy_queue(p->sq);
- if(p->rq)
- destroy_queue(p->rq);
- if(p->name && p->name!=unknown)
- 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->hostname)
+ free(c->hostname);
-/*
- remove all marked connections
-*/
-void prune_connection_tree(void)
-{
- rbl_t *rbl;
- connection_t *cl;
-cp
- RBL_FOREACH(connection_tree, rbl)
- {
- cl = (connection_t *) rbl->data;
- if(cl->status.remove)
- connection_del(cl);
- }
-cp
-}
+ cipher_close(&c->incipher);
+ cipher_close(&c->outcipher);
-/*
- free all elements of connection
-*/
-void destroy_connection_tree(void)
-{
-cp
- rbl_delete_rbltree(id_tree);
- rbl_delete_rbltree(connection_tree);
-cp
-}
+ if(c->hischallenge)
+ free(c->hischallenge);
+
+ if(c->config_tree)
+ exit_configuration(&c->config_tree);
-/* Linked list management */
+ if(c->buffer)
+ bufferevent_free(c->buffer);
+
+ if(event_initialized(&c->inevent))
+ event_del(&c->inevent);
-void connection_add(connection_t *cl)
-{
-cp
- rbl_insert(connection_tree, cl);
-cp
+ free(c);
}
-void id_add(connection_t *cl)
-{
-cp
- rbl_insert(id_tree, cl);
-cp
+void connection_add(connection_t *c) {
+ cp();
+
+ splay_insert(connection_tree, c);
}
-void connection_del(connection_t *cl)
-{
-cp
- rbl_delete(id_tree, cl);
- rbl_delete(connection_tree, cl);
-cp
+void connection_del(connection_t *c) {
+ cp();
+
+ splay_delete(connection_tree, c);
}
-/* Lookup functions */
+int dump_connections(struct evbuffer *out) {
+ splay_node_t *node;
+ connection_t *c;
-connection_t *lookup_connection(ipv4_t address, short unsigned int port)
-{
- connection_t cl;
-cp
- cl.address = address;
- cl.port = port;
+ cp();
- return rbl_search(connection_tree, &cl);
-}
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+ if(evbuffer_add_printf(out,
+ _(" %s at %s options %lx socket %d status %04x\n"),
+ c->name, c->hostname, c->options, c->socket,
+ bitfield_to_int(&c->status, sizeof c->status)) == -1)
+ return errno;
+ }
-connection_t *lookup_id(char *name)
-{
- connection_t cl, *p;
-cp
- cl.name = name;
- p = rbl_search(id_tree, &cl);
- if(p && p->status.active)
- return p;
- else
- return NULL;
+ return 0;
}
-/* Debugging */
-
-void dump_connection_list(void)
-{
- rbl_t *rbl;
- connection_t *cl;
-cp
- syslog(LOG_DEBUG, _("Connection list:"));
-
- syslog(LOG_DEBUG, _(" %s at %s port %hd flags %d sockets %d, %d status %04x"),
- myself->name, myself->hostname, myself->port, myself->flags,
- myself->socket, myself->meta_socket, myself->status);
-
- RBL_FOREACH(connection_tree, rbl)
- {
- cl = (connection_t *)rbl->data;
- syslog(LOG_DEBUG, _(" %s at %s port %hd flags %d sockets %d, %d status %04x"),
- cl->name, cl->hostname, cl->port, cl->flags,
- cl->socket, cl->meta_socket, cl->status);
- }
-
- syslog(LOG_DEBUG, _("End of connection list."));
-cp
-}
+bool read_connection_config(connection_t *c) {
+ char *fname;
+ int x;
+
+ cp();
+
+ xasprintf(&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;
}
projects / meshlink / blobdiff