/*====================================================================*
*
* 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 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 <stdio.h>
#include <string.h>
#include "../ether/channel.h"
#include "../tools/types.h"
#include "../tools/flags.h"
#include "../tools/error.h"
#include "../tools/memory.h"
#include "../iso15118/slac.h"
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)) > 0)
{
slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.REQ");
session->APPLICATION_TYPE = request->APPLICATION_TYPE;
session->SECURITY_TYPE = request->SECURITY_TYPE;
memcpy (session->PEV_MAC, request->ethernet.OSA, sizeof (session->PEV_MAC));
memcpy (session->RunID, request->RunID, sizeof (session->RunID));
#if SLAC_DEBUG
if (_anyset (session->flags, SLAC_VERBOSE))
{
char string [256];
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.APPLICATION_TYPE %d", request->APPLICATION_TYPE);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.SECURITY_TYPE %d", request->SECURITY_TYPE);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.RunID %s", HEXSTRING (string, request->RunID));
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.CipherSuiteSetSize %d", request->CipherSuiteSetSize);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.CipherSuite [0] %d", request->CipherSuite [0]);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.REQ.CipherSuite [1] %d", request->CipherSuite [1]);
}
#endif
if (_anyset (session->flags, SLAC_COMPARE))
{
if (LE16TOH (request->CipherSuite [0]) != (uint16_t) (session->counter))
{
slac_debug (session, session->exit, __func__, "session->counter mismatch! PEV=(%d) EVSE=(%d)", LE16TOH (request->CipherSuite [0]), session->counter);
}
}
slac_debug (session, 0, __func__, "--> CM_SLAC_PARAM.CNF");
memset (message, 0, sizeof (* message));
EthernetHeader (& confirm->ethernet, session->PEV_MAC, channel->host, channel->type);
HomePlugHeader1 (& confirm->homeplug, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_CNF));
memcpy (confirm->MSOUND_TARGET, broadcast, sizeof (confirm->MSOUND_TARGET));
confirm->NUM_SOUNDS = session->NUM_SOUNDS;
confirm->TIME_OUT = session->TIME_OUT;
confirm->RESP_TYPE = session->RESP_TYPE;
memcpy (confirm->FORWARDING_STA, session->FORWARDING_STA, sizeof (confirm->FORWARDING_STA));
confirm->APPLICATION_TYPE = session->APPLICATION_TYPE;
confirm->SECURITY_TYPE = session->SECURITY_TYPE;
memcpy (confirm->RunID, session->RunID, sizeof (confirm->RunID));
confirm->CipherSuite = HTOLE16 ((uint16_t) (session->counter));
if (sendmessage (channel, message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) <= 0)
{
return (slac_debug (session, 1, __func__, CHANNEL_CANTSEND));
}
return (0);
}
return (slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.REQ ?"));
}
#endif