291a59b5b7
The used remote protocol can change between two reconnects, aka if the remote side has enabled/disabled for example their ExperimentalProtocols setting.
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/*
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connection.c -- connection list management
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Copyright (C) 2000-2012 Guus Sliepen <guus@tinc-vpn.org>,
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2000-2005 Ivo Timmermans
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2008 Max Rijevski <maksuf@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "system.h"
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#include "splay_tree.h"
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#include "cipher.h"
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#include "conf.h"
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#include "control_common.h"
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#include "list.h"
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#include "logger.h"
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#include "subnet.h"
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#include "utils.h"
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#include "xalloc.h"
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splay_tree_t *connection_tree; /* Meta connections */
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connection_t *everyone;
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static int connection_compare(const connection_t *a, const connection_t *b) {
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return a < b ? -1 : a == b ? 0 : 1;
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}
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void init_connections(void) {
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connection_tree = splay_alloc_tree((splay_compare_t) connection_compare, (splay_action_t) free_connection);
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everyone = new_connection();
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everyone->name = xstrdup("everyone");
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everyone->hostname = xstrdup("BROADCAST");
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}
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void exit_connections(void) {
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splay_delete_tree(connection_tree);
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free_connection(everyone);
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}
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connection_t *new_connection(void) {
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return xmalloc_and_zero(sizeof(connection_t));
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}
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void free_connection_partially(connection_t *c) {
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cipher_close(&c->incipher);
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digest_close(&c->indigest);
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cipher_close(&c->outcipher);
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digest_close(&c->outdigest);
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sptps_stop(&c->sptps);
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ecdsa_free(&c->ecdsa);
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rsa_free(&c->rsa);
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if(c->hischallenge) {
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free(c->hischallenge);
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c->hischallenge = NULL;
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}
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buffer_clear(&c->inbuf);
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buffer_clear(&c->outbuf);
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if(event_initialized(&c->inevent))
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event_del(&c->inevent);
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if(event_initialized(&c->outevent))
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event_del(&c->outevent);
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if(c->socket > 0)
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closesocket(c->socket);
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c->socket = -1;
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c->protocol_major = 0;
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c->protocol_minor = 0;
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c->allow_request = 0;
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}
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void free_connection(connection_t *c) {
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if(!c)
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return;
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free_connection_partially(c);
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free(c->name);
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free(c->hostname);
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if(c->config_tree)
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exit_configuration(&c->config_tree);
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free(c);
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}
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void connection_add(connection_t *c) {
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splay_insert(connection_tree, c);
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}
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void connection_del(connection_t *c) {
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splay_delete(connection_tree, c);
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}
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bool dump_connections(connection_t *cdump) {
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splay_node_t *node;
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connection_t *c;
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for(node = connection_tree->head; node; node = node->next) {
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c = node->data;
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send_request(cdump, "%d %d %s at %s options %x socket %d status %04x",
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CONTROL, REQ_DUMP_CONNECTIONS,
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c->name, c->hostname, c->options, c->socket,
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bitfield_to_int(&c->status, sizeof c->status));
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}
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return send_request(cdump, "%d %d", CONTROL, REQ_DUMP_CONNECTIONS);
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}
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