/*
connection.c -- connection list management
- Copyright (C) 2000,2001 Guus Sliepen <guus@sliepen.warande.net>,
- 2000,2001 Ivo Timmermans <itimmermans@bigfoot.com>
+ Copyright (C) 2000-2012 Guus Sliepen <guus@tinc-vpn.org>,
+ 2000-2005 Ivo Timmermans
+ 2008 Max Rijevski <maksuf@gmail.com>
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
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: connection.c,v 1.1.2.24 2001/10/30 16:34:32 guus Exp $
+ 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.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <syslog.h>
-#include <string.h>
-#include <sys/time.h>
-
-#include <avl_tree.h>
-#include <list.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 "control_common.h"
+#include "list.h"
+#include "logger.h"
#include "subnet.h"
-
+#include "utils.h"
#include "xalloc.h"
-#include "system.h"
-avl_tree_t *connection_tree; /* Meta connections */
+splay_tree_t *connection_tree; /* Meta connections */
+connection_t *everyone;
-int connection_compare(connection_t *a, connection_t *b)
-{
- return a->socket - b->socket;
+static int connection_compare(const connection_t *a, const connection_t *b) {
+ return a < b ? -1 : a == b ? 0 : 1;
}
-void init_connections(void)
-{
-cp
- connection_tree = avl_alloc_tree((avl_compare_t)connection_compare, NULL);
-cp
+void init_connections(void) {
+ connection_tree = splay_alloc_tree((splay_compare_t) connection_compare, (splay_action_t) free_connection);
+ everyone = new_connection();
+ everyone->name = xstrdup("everyone");
+ everyone->hostname = xstrdup("BROADCAST");
}
-void exit_connections(void)
-{
-cp
- avl_delete_tree(connection_tree);
-cp
+void exit_connections(void) {
+ splay_delete_tree(connection_tree);
+ free_connection(everyone);
}
-connection_t *new_connection(void)
-{
- connection_t *c;
-cp
- c = (connection_t *)xmalloc_and_zero(sizeof(connection_t));
+connection_t *new_connection(void) {
+ return xmalloc_and_zero(sizeof(connection_t));
+}
- if(!c)
- return NULL;
+void free_connection_partially(connection_t *c) {
+ cipher_close(&c->incipher);
+ digest_close(&c->indigest);
+ cipher_close(&c->outcipher);
+ digest_close(&c->outdigest);
- gettimeofday(&c->start, NULL);
-cp
- return c;
-}
+ sptps_stop(&c->sptps);
+ ecdsa_free(&c->ecdsa);
+ rsa_free(&c->rsa);
-void free_connection(connection_t *c)
-{
-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);
-cp
-}
+ if(c->hischallenge) {
+ free(c->hischallenge);
+ c->hischallenge = NULL;
+ }
-void connection_add(connection_t *c)
-{
-cp
- avl_insert(connection_tree, c);
-cp
-}
+ buffer_clear(&c->inbuf);
+ buffer_clear(&c->outbuf);
+
+ if(event_initialized(&c->inevent))
+ event_del(&c->inevent);
-void connection_del(connection_t *c)
-{
-cp
- avl_delete(connection_tree, c);
-cp
+ if(event_initialized(&c->outevent))
+ event_del(&c->outevent);
+
+ if(c->socket > 0)
+ closesocket(c->socket);
+
+ c->socket = -1;
+
+ c->protocol_major = 0;
+ c->protocol_minor = 0;
+ c->allow_request = 0;
}
-connection_t *lookup_connection(ipv4_t address, short unsigned int port)
-{
- connection_t c;
-cp
- c.address = address;
- c.port = port;
+void free_connection(connection_t *c) {
+ if(!c)
+ return;
+
+ free_connection_partially(c);
+
+ free(c->name);
+ free(c->hostname);
- return avl_search(connection_tree, &c);
+ if(c->config_tree)
+ exit_configuration(&c->config_tree);
+
+ free(c);
+}
+
+void connection_add(connection_t *c) {
+ splay_insert(connection_tree, c);
}
-void dump_connections(void)
-{
- avl_node_t *node;
- connection_t *c;
-cp
- syslog(LOG_DEBUG, _("Connections:"));
-
- for(node = connection_tree->head; node; node = node->next)
- {
- c = (connection_t *)node->data;
- syslog(LOG_DEBUG, _(" %s at %s port %hd options %ld socket %d status %04x"),
- c->name, c->hostname, c->port, c->options,
- c->socket, c->status);
- }
-
- syslog(LOG_DEBUG, _("End of connections."));
-cp
+void connection_del(connection_t *c) {
+ splay_delete(connection_tree, c);
}
-int read_connection_config(connection_t *c)
-{
- char *fname;
- int x;
-cp
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- x = read_config_file(c->config_tree, fname);
- free(fname);
-cp
- return x;
+bool dump_connections(connection_t *cdump) {
+ splay_node_t *node;
+ connection_t *c;
+
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+ send_request(cdump, "%d %d %s at %s options %x socket %d status %04x",
+ CONTROL, REQ_DUMP_CONNECTIONS,
+ c->name, c->hostname, c->options, c->socket,
+ bitfield_to_int(&c->status, sizeof c->status));
+ }
+
+ return send_request(cdump, "%d %d", CONTROL, REQ_DUMP_CONNECTIONS);
}