151 lines
3.5 KiB
C
151 lines
3.5 KiB
C
/*
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connection.c -- connection list management
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Copyright (C) 2000-2016 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 "avl_tree.h"
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#include "conf.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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avl_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 = avl_alloc_tree((avl_compare_t) connection_compare, (avl_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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avl_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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connection_t *c;
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c = xmalloc_and_zero(sizeof(connection_t));
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if(!c) {
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return NULL;
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}
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gettimeofday(&c->start, NULL);
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return c;
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}
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void free_connection_partially(connection_t *c) {
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free(c->inkey);
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free(c->outkey);
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free(c->mychallenge);
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free(c->hischallenge);
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free(c->outbuf);
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c->inkey = NULL;
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c->outkey = NULL;
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c->mychallenge = NULL;
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c->hischallenge = NULL;
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c->outbuf = NULL;
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c->status.pinged = false;
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c->status.active = false;
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c->status.connecting = false;
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c->status.timeout = false;
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c->status.encryptout = false;
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c->status.decryptin = false;
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c->status.mst = false;
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c->options = 0;
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c->buflen = 0;
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c->reqlen = 0;
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c->tcplen = 0;
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c->allow_request = 0;
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c->outbuflen = 0;
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c->outbufsize = 0;
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c->outbufstart = 0;
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c->last_ping_time = 0;
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c->last_flushed_time = 0;
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c->inbudget = 0;
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c->outbudget = 0;
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if(c->inctx) {
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EVP_CIPHER_CTX_reset(c->inctx);
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free(c->inctx);
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c->inctx = NULL;
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}
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if(c->outctx) {
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EVP_CIPHER_CTX_reset(c->outctx);
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free(c->outctx);
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c->outctx = NULL;
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}
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if(c->rsa_key) {
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RSA_free(c->rsa_key);
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c->rsa_key = NULL;
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}
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}
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void free_connection(connection_t *c) {
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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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}
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free(c);
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}
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void connection_add(connection_t *c) {
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avl_insert(connection_tree, c);
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}
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void connection_del(connection_t *c) {
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avl_delete(connection_tree, c);
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}
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void dump_connections(void) {
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avl_node_t *node;
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connection_t *c;
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logger(LOG_DEBUG, "Connections:");
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for(node = connection_tree->head; node; node = node->next) {
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c = node->data;
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logger(LOG_DEBUG, " %s at %s options %x socket %d status %04x outbuf %d/%d/%d",
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c->name, c->hostname, c->options, c->socket, bitfield_to_int(&c->status, sizeof(c->status)),
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c->outbufsize, c->outbufstart, c->outbuflen);
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}
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logger(LOG_DEBUG, "End of connections.");
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}
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