/*
connection.c -- connection list management
- Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
+ 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
#include "system.h"
-#include "avl_tree.h"
+#include "splay_tree.h"
+#include "cipher.h"
#include "conf.h"
+#include "control_common.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"
-avl_tree_t *connection_tree; /* Meta connections */
-connection_t *broadcast;
+splay_tree_t *connection_tree; /* Meta connections */
+connection_t *everyone;
-static int connection_compare(const connection_t *a, const connection_t *b)
-{
+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, (avl_action_t) free_connection);
- broadcast = new_connection();
- broadcast->name = xstrdup(_("everyone"));
- broadcast->hostname = xstrdup(_("BROADCAST"));
+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);
- free_connection(broadcast);
+void exit_connections(void) {
+ splay_delete_tree(connection_tree);
+ free_connection(everyone);
}
-connection_t *new_connection(void)
-{
- connection_t *c;
-
- cp();
-
- c = xmalloc_and_zero(sizeof(connection_t));
-
- if(!c)
- return NULL;
+connection_t *new_connection(void) {
+ return xmalloc_and_zero(sizeof(connection_t));
+}
- gettimeofday(&c->start, NULL);
+void free_connection_partially(connection_t *c) {
+ cipher_close(&c->incipher);
+ digest_close(&c->indigest);
+ cipher_close(&c->outcipher);
+ digest_close(&c->outdigest);
- return c;
-}
+ sptps_stop(&c->sptps);
+ ecdsa_free(&c->ecdsa);
+ rsa_free(&c->rsa);
-void free_connection(connection_t *c)
-{
- cp();
+ if(c->hischallenge) {
+ free(c->hischallenge);
+ c->hischallenge = NULL;
+ }
- if(c->name)
- free(c->name);
+ buffer_clear(&c->inbuf);
+ buffer_clear(&c->outbuf);
+
+ if(event_initialized(&c->inevent))
+ event_del(&c->inevent);
- if(c->hostname)
- free(c->hostname);
+ if(event_initialized(&c->outevent))
+ event_del(&c->outevent);
- if(c->inkey)
- free(c->inkey);
+ if(c->socket > 0)
+ closesocket(c->socket);
- if(c->outkey)
- free(c->outkey);
+ c->socket = -1;
- if(c->inctx) {
- EVP_CIPHER_CTX_cleanup(c->inctx);
- free(c->inctx);
- }
+ c->protocol_major = 0;
+ c->protocol_minor = 0;
+ c->allow_request = 0;
+}
- if(c->outctx) {
- EVP_CIPHER_CTX_cleanup(c->outctx);
- free(c->outctx);
- }
+void free_connection(connection_t *c) {
+ if(!c)
+ return;
- if(c->mychallenge)
- free(c->mychallenge);
+ free_connection_partially(c);
- if(c->hischallenge)
- free(c->hischallenge);
+ free(c->name);
+ free(c->hostname);
if(c->config_tree)
exit_configuration(&c->config_tree);
- if(c->outbuf)
- free(c->outbuf);
-
- if(c->rsa_key)
- RSA_free(c->rsa_key);
-
free(c);
}
-void connection_add(connection_t *c)
-{
- cp();
-
- avl_insert(connection_tree, c);
+void connection_add(connection_t *c) {
+ splay_insert(connection_tree, c);
}
-void connection_del(connection_t *c)
-{
- cp();
-
- avl_delete(connection_tree, c);
+void connection_del(connection_t *c) {
+ splay_delete(connection_tree, c);
}
-void dump_connections(void)
-{
- avl_node_t *node;
+bool dump_connections(connection_t *cdump) {
+ splay_node_t *node;
connection_t *c;
- cp();
-
- logger(LOG_DEBUG, _("Connections:"));
-
for(node = connection_tree->head; node; node = node->next) {
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, bitfield_to_int(&c->status, sizeof c->status),
- c->outbufsize, c->outbufstart, c->outbuflen);
+ 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));
}
- logger(LOG_DEBUG, _("End of connections."));
-}
-
-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);
-
- return x == 0;
+ return send_request(cdump, "%d %d", CONTROL, REQ_DUMP_CONNECTIONS);
}