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89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/**
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* @file packet.h
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*
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* @brief UDP-Packet, contains data, sender and receiver
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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 "packet.h"
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static status_t destroy(packet_t *this)
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{
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pfree(this->data.ptr);
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pfree(this);
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return SUCCESS;
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}
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/**
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* @brief helper function to set address used by set_dest & set_source
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*/
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static status_t set_addr(int family, struct sockaddr *saddr, char *address, u_int16_t port)
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{
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switch (family)
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{
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/* IPv4 */
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case AF_INET:
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{
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struct sockaddr_in *sin = (struct sockaddr_in*)saddr;
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sin->sin_family = AF_INET;
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sin->sin_addr.s_addr = inet_addr("127.0.0.1");
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sin->sin_port = htons(port);
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return SUCCESS;;
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}
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}
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return NOT_SUPPORTED;
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}
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status_t set_destination(packet_t *this, char *address, u_int16_t port)
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{
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struct sockaddr *saddr = &(this->destination);
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return set_addr(this->family, saddr, address, port);
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}
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status_t set_source(packet_t *this, char *address, u_int16_t port)
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{
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struct sockaddr *saddr = &(this->source);
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return set_addr(this->family, saddr, address, port);
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}
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packet_t *packet_create(int family)
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{
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packet_t *this = alloc_thing(packet_t, "packet_t");
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this->destroy = destroy;
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this->set_destination = set_destination;
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this->set_source = set_source;
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this->family = family;
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switch (family)
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{
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case AF_INET:
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this->sockaddr_len = sizeof(struct sockaddr_in);
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break;
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default: /* not supported */
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pfree(this);
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return NULL;
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}
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this->data.len = 0;
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this->data.ptr = NULL;
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return this;
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}
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