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			evse_cm_slac_param.c
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/*====================================================================*
 *
 *   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 &quot;AS IS&quot; 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 evse_cm_slac_param (struct session * session, struct channel * channel, struct message * message);
 *
 *   slac.h
 *  
 *   EVSE-HLE listens indefinitely for a cm_slac_param request and 
 *   responds with a cm_slac_param confirm; this function should not
 *   exit untile a cm_slac_param request so that SLAC sessions will
 *   properly synchronize;
 *
 *   unlike some other EVSE-HLE functions, this one does not check
 *   the run identifier because this is the first point at which a
 *   new run identifier is received; it should, however, store the
 *   run identifier to verify future messages from the PEV;
 *
 *   EVSE-HLE should copy the message OSA to the session variable PEV
 *   MAC address; the PEV MAC address can then be used to respond in
 *   unicast to the right PEVHLE;
 *
 *   EVSE-HLE should copy the run identifier to the session variable 
 *   for use later in the session; this will be used to distinguish
 *   one PEV-EVSE session from another;   
 *
 *   EVSE-HLE should copy the application type and security type to
 *   the session variable unless it wants to operate in a mode that
 *   is different from the PEV;
 *
 *   at this point, the EVSE-HLE dictates the number of msounds and
 *   the msound timeout;
 *
 *   EVSE-HLE should set the msound target to the broadcast address;
 *
 *   EVSE-HLE should set the number of sounds to 8 and the timeout
 *   to 10 intervals of 100ms.
 *
 *   EVSE-HLE may send zeros for the forwarding station since it is
 *   not used here;
 *  
 *--------------------------------------------------------------------*/

#ifndef EVSE_CM_SLAC_PARAM_SOURCE
#define EVSE_CM_SLAC_PARAM_SOURCE

#include &lt;stdio.h&gt;
#include &lt;string.h&gt;

#include &quot;../ether/channel.h&quot;
#include &quot;../tools/types.h&quot;
#include &quot;../tools/flags.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../tools/memory.h&quot;
#include &quot;../iso15118/slac.h&quot;

signed evse_cm_slac_param (struct session * session, struct channel * channel, struct message * message) 

{ 
	extern byte const broadcast [ETHER_ADDR_LEN]; 
	struct cm_slac_param_request * request = (struct cm_slac_param_request *) (message); 
	struct cm_slac_param_confirm * confirm = (struct cm_slac_param_confirm *) (message); 
	while (readmessage (channel, message, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_REQ)) &gt; 0) 
	{ 
		slac_debug (session, 0, __func__, &quot;&lt;-- CM_SLAC_PARAM.REQ&quot;); 
		session-&gt;APPLICATION_TYPE = request-&gt;APPLICATION_TYPE; 
		session-&gt;SECURITY_TYPE = request-&gt;SECURITY_TYPE; 
		memcpy (session-&gt;PEV_MAC, request-&gt;ethernet.OSA, sizeof (session-&gt;PEV_MAC)); 
		memcpy (session-&gt;RunID, request-&gt;RunID, sizeof (session-&gt;RunID)); 

#if SLAC_DEBUG

		if (_anyset (session-&gt;flags, SLAC_VERBOSE)) 
		{ 
			char string [256]; 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.APPLICATION_TYPE %d&quot;, request-&gt;APPLICATION_TYPE); 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.SECURITY_TYPE %d&quot;, request-&gt;SECURITY_TYPE); 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.RunID %s&quot;, HEXSTRING (string, request-&gt;RunID)); 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.CipherSuiteSetSize %d&quot;, request-&gt;CipherSuiteSetSize); 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.CipherSuite [0] %d&quot;, request-&gt;CipherSuite [0]); 
			slac_debug (session, 0, __func__, &quot;CM_SLAC_PARAM.REQ.CipherSuite [1] %d&quot;, request-&gt;CipherSuite [1]); 
		} 

#endif

		if (_anyset (session-&gt;flags, SLAC_COMPARE)) 
		{ 
			if (LE16TOH (request-&gt;CipherSuite [0]) != (uint16_t) (session-&gt;counter)) 
			{ 
				slac_debug (session, session-&gt;exit, __func__, &quot;session-&gt;counter mismatch! PEV=(%d) EVSE=(%d)&quot;, LE16TOH (request-&gt;CipherSuite [0]), session-&gt;counter); 
			} 
		} 
		slac_debug (session, 0, __func__, &quot;--&gt; CM_SLAC_PARAM.CNF&quot;); 
		memset (message, 0, sizeof (* message)); 
		EthernetHeader (&amp; confirm-&gt;ethernet, session-&gt;PEV_MAC, channel-&gt;host, channel-&gt;type); 
		HomePlugHeader1 (&amp; confirm-&gt;homeplug, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_CNF)); 
		memcpy (confirm-&gt;MSOUND_TARGET, broadcast, sizeof (confirm-&gt;MSOUND_TARGET)); 
		confirm-&gt;NUM_SOUNDS = session-&gt;NUM_SOUNDS; 
		confirm-&gt;TIME_OUT = session-&gt;TIME_OUT; 
		confirm-&gt;RESP_TYPE = session-&gt;RESP_TYPE; 
		memcpy (confirm-&gt;FORWARDING_STA, session-&gt;FORWARDING_STA, sizeof (confirm-&gt;FORWARDING_STA)); 
		confirm-&gt;APPLICATION_TYPE = session-&gt;APPLICATION_TYPE; 
		confirm-&gt;SECURITY_TYPE = session-&gt;SECURITY_TYPE; 
		memcpy (confirm-&gt;RunID, session-&gt;RunID, sizeof (confirm-&gt;RunID)); 
		confirm-&gt;CipherSuite = HTOLE16 ((uint16_t) (session-&gt;counter)); 
		if (sendmessage (channel, message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) &lt;= 0) 
		{ 
			return (slac_debug (session, 1, __func__, CHANNEL_CANTSEND)); 
		} 
		return (0); 
	} 
	return (slac_debug (session, 0, __func__, &quot;&lt;-- CM_SLAC_PARAM.REQ ?&quot;)); 
} 

#endif


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