/*====================================================================*
*
* 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 pev_cm_slac_param (struct session * session, struct channel * channel, struct message * message);
*
* slac.h
*
* PEV-HLE broadcasts cm_slac_param requests until at least one
* matching cm_slac_param confirm is received; matching confirm
* has the same run identifier; EVSE-HLE returns information to
* the PEV-HLE;
*
* return 0 on success, -1 on error and 1 on timeout;
*
* this interaction effectivey synchronizes the PEV-HLE and one
* or more EVSE-HLEs by initiating the SLAC protocol sequence;
*
* MSOUND-TARGET will be FF:FF:FF:FF:FF:FF for SLAC;
* NUM_SOUNDS will be 8 for SLAC;
* TIME_OUT will be 10 for SLAC;
* RESP_TYPE will be 00 for SLAC (???);
* FORWARDING_STA will be 00:00:00:00:00:00 for SLAC when RESP_TYPE=0;
* APPLICATION_TYPE will be 0 for SLAC;
* SECUTITY_TYPE will be 0 for this application;
* RunID will be that defined by PEV-HLE;
*
* send cm_slac_param request then wait up to channel.timeout
* milliseconds for a cm_slac_param confirm having the same
* RunID as the request; the application type and security
* type should be the same as in the request;
*
* save the msound target, forwarding station, number of sounds,
* sounding timeout and response type for use later in the session;
*
* the forwarding stations is a vague concept; the specification
* authors say it should be FF:FF:FF:FF:FF:FF but here, the EVSE-HLE
* will set it to the PEV MAC;
*
*--------------------------------------------------------------------*/
#ifndef PEV_CM_SLAC_PARAM_SOURCE
#define PEV_CM_SLAC_PARAM_SOURCE
#include <string.h>
#include <errno.h>
#include "../ether/channel.h"
#include "../tools/memory.h"
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../iso15118/slac.h"
signed pev_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);
slac_debug (session, 0, __func__, "--> CM_SLAC_PARAM.REQ");
memset (message, 0, sizeof (* message));
EthernetHeader (& request->ethernet, broadcast, channel->host, channel->type);
HomePlugHeader1 (& request->homeplug, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_REQ));
request->APPLICATION_TYPE = session->APPLICATION_TYPE;
request->SECURITY_TYPE = session->SECURITY_TYPE;
memcpy (request->RunID, session->RunID, sizeof (request->RunID));
request->CipherSuite [0] = HTOLE16 ((uint16_t) (session->counter));
if (sendmessage (channel, message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) <= 0)
{
return (slac_debug (session, 1, __func__, CHANNEL_CANTSEND));
}
while (readmessage (channel, message, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_CNF)) > 0)
{
if (! memcmp (session->RunID, confirm->RunID, sizeof (session->RunID)))
{
slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.CNF");
if (confirm->APPLICATION_TYPE != session->APPLICATION_TYPE)
{
slac_debug (session, session->exit, __func__, "Unexpected APPLICATION_TYPE");
}
if (confirm->SECURITY_TYPE != session->SECURITY_TYPE)
{
slac_debug (session, session->exit, __func__, "Unexpected SECURITY_TYPE");
}
if (_anyset (session->flags, SLAC_COMPARE))
{
if (LE16TOH (confirm->CipherSuite) != (uint16_t) (session->counter))
{
slac_debug (session, session->exit, __func__, "session->counter mismatch! PEV=(%d) EVSE=(%d)", LE16TOH (confirm->CipherSuite), session->counter);
}
}
#if SLAC_DEBUG
if (_anyset (session->flags, SLAC_VERBOSE))
{
char string [256];
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.MSOUND_TARGET %s", HEXSTRING (string, confirm->MSOUND_TARGET));
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.NUM_SOUNDS %d", confirm->NUM_SOUNDS);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.TIME_OUT %d", confirm->TIME_OUT);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.RESP_TYPE %d", confirm->RESP_TYPE);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.FORWARDING_STA %s", HEXSTRING (string, confirm->FORWARDING_STA));
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.APPLICATION_TYPE %d", confirm->APPLICATION_TYPE);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.SECURITY_TYPE %d", confirm->SECURITY_TYPE);
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.RunID %s", HEXSTRING (string, confirm->RunID));
slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.CipherSuite %d", confirm->CipherSuite);
}
#endif
memcpy (session->FORWARDING_STA, confirm->FORWARDING_STA, sizeof (session->FORWARDING_STA));
memcpy (session->MSOUND_TARGET, confirm->MSOUND_TARGET, sizeof (session->MSOUND_TARGET));
session->NUM_SOUNDS = confirm->NUM_SOUNDS;
session->TIME_OUT = confirm->TIME_OUT;
session->RESP_TYPE = confirm->RESP_TYPE;
return (0);
}
}
return (slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.CNF ?"));
}
#endif