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132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/**
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* @file socket.c
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*
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* @brief management of sockets
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*
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* receiver reads from here, sender writes to here
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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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.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <freeswan.h>
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#include <pluto/constants.h>
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#include <pluto/defs.h>
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typedef struct {
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/**
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* public functions
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*/
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socket_t public;
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/**
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* currently we only have one socket, maybe more in the future ?
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*/
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int socket_fd;
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} private_socket_t;
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status_t receiver(private_socket_t *this, packet_t **packet)
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{
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char buffer[MAX_PACKET];
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packet_t *pkt = packet_create();
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/* do the read */
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pkt->sender.len = sizeof(pkt->sender.addr);
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pkt->data.len = recvfrom(this->socket_fd, buffer, MAX_PACKET, 0,
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&(pkt->sender.addr), &(pkt->sender.len));
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if (pkt->data.len < 0)
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{
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pkt->destroy(pkt);
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return FAILED;
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}
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/* fill in packet */
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pkt->data.ptr = alloc_bytes(pkt->data.len, "data in packet_t");
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memcpy(pkt->data.ptr, buffer, pkt->data.len);
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/* return packet */
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*packet = pkt;
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return SUCCESS;
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}
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status_t sender(private_socket_t *this, packet_t *packet)
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{
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ssize_t bytes_sent;
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printf("@%d\n", __LINE__);
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/* send data */
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bytes_sent = sendto(this->socket_fd, packet->data.ptr, packet->data.len,
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0, &(packet->receiver.addr), packet->receiver.len);
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printf("bytes: %d\n", bytes_sent);
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if (bytes_sent != packet->data.len)
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{
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return FAILED;
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}
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return SUCCESS;
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}
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status_t destroyer(private_socket_t *this)
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{
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close(this->socket_fd);
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pfree(this);
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return SUCCESS;
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}
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socket_t *socket_create()
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{
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private_socket_t *this = alloc_thing(socket_t, "private_socket_t");
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struct sockaddr_in addr;
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/* public functions */
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this->public.send = (status_t(*)(socket_t*, packet_t*))sender;
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this->public.receive = (status_t(*)(socket_t*, packet_t**))receiver;
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this->public.destroy = (status_t(*)(socket_t*))destroyer;
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printf("@%d\n", __LINE__);
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/* create default ipv4 socket */
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this->socket_fd = socket(PF_INET, SOCK_DGRAM, 0);
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if (this->socket_fd < 0) {
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pfree(this);
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return NULL;
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}
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printf("@%d\n", __LINE__);
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = INADDR_ANY;
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addr.sin_port = 500;
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if (bind(this->socket_fd,(struct sockaddr*)&addr, sizeof(addr)) < 0) {
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pfree(this);
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return NULL;
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}
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printf("@%d\n", __LINE__);
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return (socket_t*)this;
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}
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