/*====================================================================*
*
* 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_set_key (struct session * session, struct channel * channel, struct message * message);
*
* slac.h
*
* PEV-HLE sets the NMK and NID on PEV-PLC using CM_SET_KEY.REQ;
* the NMK and NID must match those provided by EVSE-HLE using
* CM_SLAC_MATCH.CNF;
*
* Contributor(s):
* Charles Maier <cmaier@qca.qualcomm.com>
*
*--------------------------------------------------------------------*/
#ifndef EVSE_CM_SET_KEY_SOURCE
#define EVSE_CM_SET_KEY_SOURCE
#include <string.h>
#include "../ether/channel.h"
#include "../tools/memory.h"
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../mme/qualcomm.h"
#include "../mme/homeplug.h"
#include "../iso15118/slac.h"
signed evse_cm_set_key (struct session * session, struct channel * channel, struct message * message)
{
#ifndef __GNUC__
#pragma pack(push,1)
#endif
struct __packed cm_set_key_request
{
struct ethernet_hdr ethernet;
struct homeplug_fmi homeplug;
uint8_t KEYTYPE;
uint32_t MYNOUNCE;
uint32_t YOURNOUNCE;
uint8_t PID;
uint16_t PRN;
uint8_t PMN;
uint8_t CCOCAP;
uint8_t NID [SLAC_NID_LEN];
uint8_t NEWEKS;
uint8_t NEWKEY [SLAC_NMK_LEN];
uint8_t RSVD [3];
}
* request = (struct cm_set_key_request *) (message);
struct __packed cm_set_key_confirm
{
struct ethernet_hdr ethernet;
struct homeplug_fmi homeplug;
uint8_t RESULT;
uint32_t MYNOUNCE;
uint32_t YOURNOUNCE;
uint8_t PID;
uint16_t PRN;
uint8_t PMN;
uint8_t CCOCAP;
uint8_t RSVD [27];
}
* confirm = (struct cm_set_key_confirm *) (message);
#ifndef __GNUC__
#pragma pack (pop)
#endif
memset (message, 0, sizeof (* message));
slac_debug (session, 0, __func__, "--> CM_SET_KEY.REQ");
EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
HomePlugHeader1 (& request->homeplug, HOMEPLUG_MMV, (CM_SET_KEY | MMTYPE_REQ));
request->KEYTYPE = SLAC_CM_SETKEY_KEYTYPE;
memset (& request->MYNOUNCE, 0xAA, sizeof (request->MYNOUNCE));
memset (& request->YOURNOUNCE, 0x00, sizeof (request->YOURNOUNCE));
request->PID = SLAC_CM_SETKEY_PID;
request->PRN = HTOLE16 (SLAC_CM_SETKEY_PRN);
request->PMN = SLAC_CM_SETKEY_PMN;
request->CCOCAP = SLAC_CM_SETKEY_CCO;
memcpy (request->NID, session->NID, sizeof (request->NID));
request->NEWEKS = SLAC_CM_SETKEY_EKS;
memcpy (request->NEWKEY, session->NMK, sizeof (request->NEWKEY));
#if SLAC_DEBUG
if (_anyset (session->flags, SLAC_VERBOSE))
{
char string [1024];
slac_debug (session, 0, __func__, "CM_SET_KEY.KEYTYPE %d", request->KEYTYPE);
slac_debug (session, 0, __func__, "CM_SET_KEY.MYNOUNCE %s", hexstring (string, sizeof (string), & request->MYNOUNCE, sizeof (request->MYNOUNCE)));
slac_debug (session, 0, __func__, "CM_SET_KEY.YOURNOUNCE %s", hexstring (string, sizeof (string), & request->YOURNOUNCE, sizeof (request->MYNOUNCE)));
slac_debug (session, 0, __func__, "CM_SET_KEY.PID %d", request->PID);
slac_debug (session, 0, __func__, "CM_SET_KEY.PRN %d", LE32TOH (request->PRN));
slac_debug (session, 0, __func__, "CM_SET_KEY.PMN %d", request->PMN);
slac_debug (session, 0, __func__, "CM_SET_KEY.CCoCAP %d", request->CCOCAP);
slac_debug (session, 0, __func__, "CM_SET_KEY.NID %s", HEXSTRING (string, request->NID));
slac_debug (session, 0, __func__, "CM_SET_KEY.NEWEKS %d", request->NEWEKS);
slac_debug (session, 0, __func__, "CM_SET_KEY.NEWKEY %s", HEXSTRING (string, request->NEWKEY));
}
#endif
if (sendpacket (channel, request, sizeof (* request)) <= 0)
{
return (slac_debug (session, 1, __func__, CHANNEL_CANTSEND));
}
while (readpacket (channel, confirm, sizeof (* confirm)) > 0)
{
if (ntohs (confirm->ethernet.MTYPE) != ETH_P_HPAV)
{
slac_debug (session, session->exit, __func__, "Ignore MTYPE 0x%04X", htons (confirm->ethernet.MTYPE));
continue;
}
if (confirm->homeplug.MMV != HOMEPLUG_MMV)
{
slac_debug (session, session->exit, __func__, "Ignore MMV 0x%02X", confirm->homeplug.MMV);
continue;
}
if (LE32TOH (confirm->homeplug.MMTYPE) != (CM_SET_KEY | MMTYPE_CNF))
{
slac_debug (session, session->exit, __func__, "Ignore MMTYPE 0x%04X", LE32TOH (confirm->homeplug.MMTYPE));
continue;
}
slac_debug (session, 0, __func__, "<-- CM_SET_KEY.CNF");
if (! confirm->RESULT)
{
return (slac_debug (session, session->exit, __func__, "Device refused request"));
}
#if SLAC_DEBUG
if (_anyset (session->flags, SLAC_VERBOSE))
{
char string [1024];
slac_debug (session, 0, __func__, "CM_SET_KEY.RESULT %d", confirm->RESULT);
slac_debug (session, 0, __func__, "CM_SET_KEY.MYNOUNCE %s", hexstring (string, sizeof (string), & confirm->MYNOUNCE, sizeof (confirm->MYNOUNCE)));
slac_debug (session, 0, __func__, "CM_SET_KEY.YOURNOUNCE %s", hexstring (string, sizeof (string), & confirm->YOURNOUNCE, sizeof (confirm->MYNOUNCE)));
slac_debug (session, 0, __func__, "CM_SET_KEY.PID %d", confirm->PID);
slac_debug (session, 0, __func__, "CM_SET_KEY.PRN %d", LE32TOH (confirm->PRN));
slac_debug (session, 0, __func__, "CM_SET_KEY.PMN %d", confirm->PMN);
slac_debug (session, 0, __func__, "CM_SET_KEY.CCoCAP %d", confirm->CCOCAP);
}
#endif
return (0);
}
return (slac_debug (session, session->exit, __func__, "<-- CM_SET_KEY.REQ ?"));
}
#endif