146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* Copyright (C) 2010 Martin Willi
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* Copyright (C) 2010 revosec AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "socket_manager.h"
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#include <daemon.h>
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#include <threading/thread.h>
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#include <threading/rwlock.h>
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#include <utils/linked_list.h>
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typedef struct private_socket_manager_t private_socket_manager_t;
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/**
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* Private data of an socket_manager_t object.
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*/
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struct private_socket_manager_t {
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/**
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* Public socket_manager_t interface.
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*/
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socket_manager_t public;
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/**
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* List of registered socket
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*/
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linked_list_t *sockets;
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/**
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* Lock for sockets list
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*/
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rwlock_t *lock;
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};
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METHOD(socket_manager_t, receiver, status_t,
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private_socket_manager_t *this, packet_t **packet)
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{
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socket_t *socket;
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status_t status;
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this->lock->read_lock(this->lock);
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if (this->sockets->get_first(this->sockets, (void**)&socket) != SUCCESS)
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{
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DBG1(DBG_NET, "no socket implementation registered, receiving failed");
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this->lock->unlock(this->lock);
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return NOT_SUPPORTED;
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}
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/* receive is blocking and the thread can be cancelled */
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thread_cleanup_push((thread_cleanup_t)this->lock->unlock, this->lock);
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status = socket->receive(socket, packet);
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thread_cleanup_pop(TRUE);
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return status;
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}
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METHOD(socket_manager_t, sender, status_t,
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private_socket_manager_t *this, packet_t *packet)
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{
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socket_t *socket;
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status_t status;
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this->lock->read_lock(this->lock);
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if (this->sockets->get_first(this->sockets, (void**)&socket) != SUCCESS)
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{
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DBG1(DBG_NET, "no socket implementation registered, sending failed");
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this->lock->unlock(this->lock);
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return NOT_SUPPORTED;
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}
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status = socket->send(socket, packet);
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this->lock->unlock(this->lock);
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return status;
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}
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METHOD(socket_manager_t, create_enumerator, enumerator_t*,
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private_socket_manager_t *this)
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{
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socket_t *socket;
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this->lock->read_lock(this->lock);
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if (this->sockets->get_first(this->sockets, (void**)&socket) != SUCCESS)
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{
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this->lock->unlock(this->lock);
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return enumerator_create_empty();
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}
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return enumerator_create_cleaner(socket->create_enumerator(socket),
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(void*)this->lock->unlock, this->lock);
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}
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METHOD(socket_manager_t, add_socket, void,
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private_socket_manager_t *this, socket_t *socket)
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{
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this->lock->write_lock(this->lock);
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this->sockets->insert_last(this->sockets, socket);
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this->lock->unlock(this->lock);
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}
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METHOD(socket_manager_t, remove_socket, void,
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private_socket_manager_t *this, socket_t *socket)
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{
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this->lock->write_lock(this->lock);
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this->sockets->remove(this->sockets, socket, NULL);
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this->lock->unlock(this->lock);
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}
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METHOD(socket_manager_t, destroy, void,
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private_socket_manager_t *this)
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{
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this->sockets->destroy(this->sockets);
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this->lock->destroy(this->lock);
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free(this);
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}
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/**
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* See header
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*/
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socket_manager_t *socket_manager_create()
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{
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private_socket_manager_t *this;
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INIT(this,
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.public = {
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.send = _sender,
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.receive = _receiver,
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.create_enumerator = _create_enumerator,
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.add_socket = _add_socket,
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.remove_socket = _remove_socket,
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.destroy = _destroy,
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},
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.sockets = linked_list_create(),
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.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
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);
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return &this->public;
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}
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