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/*
* tcpproxy
*
* tcpproxy is a simple tcp connection proxy which combines the
* features of rinetd and 6tunnel. tcpproxy supports IPv4 and
* IPv6 and also supports connections from IPv6 to IPv4
* endpoints and vice versa.
*
*
* Copyright (C) 2010-2011 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of tcpproxy.
*
* tcpproxy is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* tcpproxy is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* 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 tcpproxy. If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "listener.h"
#include "tcp.h"
void listener_delete_element(void* e)
{
if(!e)
return;
listener_t* element = (listener_t*)e;
close(element->fd_);
free(e);
}
int listener_init(listeners_t* list)
{
return slist_init(list, &listener_delete_element);
}
void listener_clear(listeners_t* list)
{
slist_clear(list);
}
int listener_add(listeners_t* list, char* laddr, char* lport, char* raddr, char* rport)
{
if(!list)
return -1;
listener_t* element = malloc(sizeof(listener_t));
if(!element)
return -2;
// TODO: open listen socket and resolv local and remote address
static int fds = 6;
element->fd_ = fds++;
memset(&(element->local_end_), 0, sizeof(element->local_end_));
memset(&(element->remote_end_), 0, sizeof(element->remote_end_));
if(slist_add(list, element) == NULL)
return -2;
return 0;
}
void listener_remove(listeners_t* list, int fd)
{
slist_remove(list, listener_find(list, fd));
}
listener_t* listener_find(listeners_t* list, int fd)
{
if(!list)
return NULL;
slist_element_t* tmp = list->first_;
while(tmp) {
listener_t* l = (listener_t*)tmp->data_;
if(l && l->fd_ == fd)
return l;
tmp = tmp->next_;
}
return NULL;
}
void listener_print(listeners_t* list)
{
if(!list)
return;
slist_element_t* tmp = list->first_;
while(tmp) {
listener_t* l = (listener_t*)tmp->data_;
if(l) {
char* ls = tcp_endpoint_to_string(l->local_end_);
char* rs = tcp_endpoint_to_string(l->remote_end_);
printf("listener #%d: %s -> %s\n", l->fd_, ls ? ls : "(null)", rs ? rs : "(null)");
if(ls) free(ls);
if(rs) free(rs);
}
tmp = tmp->next_;
}
}
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