FirmwareMessage.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   Copyright (c) 2013 Qualcomm Atheros, Inc.
     *
     *   All rights reserved.
     *
     *   Redistribution and use in source and binary forms, with or
     *   without modification, are permitted (subject to the limitations
     *   in the disclaimer below) 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.
     *
     *   * Neither the name of Qualcomm Atheros nor the names of
     *     its contributors may be used to endorse or promote products
     *     derived from this software without specific prior written
     *     permission.
     *
     *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
     *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
     *   COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER
     *   OR CONTRIBUTORS 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.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   signed FirmwareMessage (void const * memory);
     *
     *   mme.h
     *
     *   intercept and print Qualcomm Atheros vendor-specific VS_ARPC
     *   messages on stdout; this message type is used for diagnostic
     *   reporting and should not appear in released firmware;
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef FIRMWAREMESSAGE_SOURCE
    #define FIRMWAREMESSAGE_SOURCE

    #include <stdint.h>
    #include <memory.h>

    #include "../plc/plc.h"
    #include "../tools/memory.h"
    #include "../tools/endian.h"
    #include "../mme/mme.h"

    signed FirmwareMessage (void const * memory)

    {
    	const struct message * message = (const struct message *)(memory);

    #ifndef __GNUC__
    #pragma pack (push,1)
    #endif

    	static struct qualcomm_hdr header_arpc =
    	{
    		0,
    		0,
    		{
    			0x00,
    			0xB0,
    			0x52
    		}
    	};
    	struct __packed vs_arpc_indicate
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint16_t RDATALENGTH;
    		uint8_t RDATAOFFSET;
    		uint8_t RDATA [1];
    	}
    	* indicate = (struct vs_arpc_indicate *)(message);

    #ifndef __GNUC__
    #pragma pack (pop)
    #endif

    	header_arpc.MMTYPE = HTOLE16 (VS_ARPC | MMTYPE_IND);
    	if (!memcmp (&indicate->qualcomm, &header_arpc, sizeof (header_arpc)))
    	{
    		ARPCPrint (stderr, &indicate->RDATA [indicate->RDATAOFFSET], LE16TOH (indicate->RDATALENGTH) - indicate->RDATAOFFSET);
    		return (-1);
    	}
    	return (0);
    }

    #endif

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