source: mainline/uspace/lib/net/tl/icmp_client.c@ 753bca3

/*
 * Copyright (c) 2009 Lukas Mejdrech
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup icmp
 *  @{
 */

/** @file
 *  ICMP client interface implementation.
 *  @see icmp_client.h
 */

#ifdef CONFIG_DEBUG
        #include <stdio.h>
#endif

#include <errno.h>
#include <sys/types.h>

#include <net/icmp_codes.h>
#include <icmp_client.h>
#include <net/packet.h>
#include <packet_client.h>
#include <icmp_header.h>

int icmp_client_process_packet(packet_t packet, icmp_type_t * type, icmp_code_t * code, icmp_param_t * pointer, icmp_param_t * mtu){
        icmp_header_ref header;

        header = (icmp_header_ref) packet_get_data(packet);
        if((! header)
                || (packet_get_data_length(packet) < sizeof(icmp_header_t))){
                return 0;
        }
        if(type){
                *type = header->type;
        }
        if(code){
                *code = header->code;
        }
        if(pointer){
                *pointer = header->un.param.pointer;
        }
        if(mtu){
                *mtu = header->un.frag.mtu;
        }
        // remove debug dump
#ifdef CONFIG_DEBUG
        printf("ICMP error %d (%d) in packet %d\n", header->type, header->code, packet_get_id(packet));
#endif
        return sizeof(icmp_header_t);
}

size_t icmp_client_header_length(packet_t packet){
        if(packet_get_data_length(packet) < sizeof(icmp_header_t)){
                return 0;
        }
        return sizeof(icmp_header_t);
}

/** @}
 */