173 lines
8.3 KiB
Java
173 lines
8.3 KiB
Java
/*******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2015-207 V2G Clarity (Dr.-Ing. Marc Mültin)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*******************************************************************************/
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package com.v2gclarity.risev2g.secc.states;
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import java.util.Arrays;
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import java.util.HashMap;
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import javax.xml.bind.JAXBElement;
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import javax.xml.namespace.QName;
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import com.v2gclarity.risev2g.secc.session.V2GCommunicationSessionSECC;
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import com.v2gclarity.risev2g.shared.enumerations.V2GMessages;
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import com.v2gclarity.risev2g.shared.messageHandling.ReactionToIncomingMessage;
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import com.v2gclarity.risev2g.shared.utils.SecurityUtils;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.ACEVSEStatusType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.BodyBaseType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.DCEVSEStatusType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.EVSENotificationType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.MeterInfoType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.MeteringReceiptReqType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.MeteringReceiptResType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.ResponseCodeType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.SignatureType;
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import com.v2gclarity.risev2g.shared.v2gMessages.msgDef.V2GMessage;
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public class WaitForMeteringReceiptReq extends ServerState {
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private MeteringReceiptResType meteringReceiptRes;
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public WaitForMeteringReceiptReq(V2GCommunicationSessionSECC commSessionContext) {
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super(commSessionContext);
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meteringReceiptRes = new MeteringReceiptResType();
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}
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@Override
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public ReactionToIncomingMessage processIncomingMessage(Object message) {
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if (isIncomingMessageValid(message, MeteringReceiptReqType.class, meteringReceiptRes)) {
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V2GMessage v2gMessageReq = (V2GMessage) message;
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MeteringReceiptReqType meteringReceiptReq =
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(MeteringReceiptReqType) v2gMessageReq.getBody().getBodyElement().getValue();
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if (isResponseCodeOK(meteringReceiptReq, v2gMessageReq.getHeader().getSignature())) {
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setEVSEStatus(meteringReceiptRes);
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((ForkState) getCommSessionContext().getStates().get(V2GMessages.FORK))
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.getAllowedRequests().add(V2GMessages.POWER_DELIVERY_REQ);
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((ForkState) getCommSessionContext().getStates().get(V2GMessages.FORK))
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.getAllowedRequests().add(V2GMessages.CHARGING_STATUS_REQ);
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((ForkState) getCommSessionContext().getStates().get(V2GMessages.FORK))
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.getAllowedRequests().add(V2GMessages.CURRENT_DEMAND_REQ);
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return getSendMessage(meteringReceiptRes, V2GMessages.FORK);
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} else {
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setMandatoryFieldsForFailedRes(meteringReceiptRes, meteringReceiptRes.getResponseCode());
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}
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} else {
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if (meteringReceiptRes.getResponseCode().equals(ResponseCodeType.FAILED_SEQUENCE_ERROR)) {
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BodyBaseType responseMessage = getSequenceErrorResMessage(new MeteringReceiptResType(), message);
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return getSendMessage(responseMessage, V2GMessages.NONE, meteringReceiptRes.getResponseCode());
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} else {
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setMandatoryFieldsForFailedRes(meteringReceiptRes, meteringReceiptRes.getResponseCode());
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}
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}
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return getSendMessage(meteringReceiptRes, V2GMessages.NONE, meteringReceiptRes.getResponseCode());
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}
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private boolean isResponseCodeOK(
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MeteringReceiptReqType meteringReceiptReq,
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SignatureType signature) {
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/*
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* Check if previously sent MeterInfo from ChargingStatusRes (AC charging) /
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* CurrentDemandRes (DC charging) is equal to the received MeterInfo
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*/
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if (!meterInfoEquals(getCommSessionContext().getSentMeterInfo(), meteringReceiptReq.getMeterInfo())) {
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getLogger().error("The metering values sent by the EVCC do not match the ones sent previously by the SECC. "
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+ "This is not a signature verification error.");
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meteringReceiptRes.setResponseCode(ResponseCodeType.FAILED_METERING_SIGNATURE_NOT_VALID);
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return false;
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}
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// Verify signature
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HashMap<String, byte[]> verifyXMLSigRefElements = new HashMap<String, byte[]>();
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verifyXMLSigRefElements.put(
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meteringReceiptReq.getId(),
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SecurityUtils.generateDigest(meteringReceiptReq.getId(), getMessageHandler().getJaxbElement(meteringReceiptReq)));
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if (!SecurityUtils.verifySignature(
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signature,
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getMessageHandler().getJaxbElement(signature.getSignedInfo()),
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verifyXMLSigRefElements,
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getCommSessionContext().getContractSignatureCertChain().getCertificate())) {
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meteringReceiptRes.setResponseCode(ResponseCodeType.FAILED_METERING_SIGNATURE_NOT_VALID);
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return false;
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}
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return true;
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}
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private boolean meterInfoEquals(MeterInfoType meterInfoSentBySECC, MeterInfoType meterInfoReceivedFromEVCC) {
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if (meterInfoSentBySECC == null) {
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getLogger().error("MeterInfo sent by SECC is not saved in session context, value is null");
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return false;
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} else if (meterInfoReceivedFromEVCC == null) {
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getLogger().error("MeterInfo received from EVCC is null");
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return false;
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} else {
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// Only meterID is mandatory field, thus check for null values as well
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if (!meterInfoSentBySECC.getMeterID().equals(meterInfoReceivedFromEVCC.getMeterID()) ||
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(meterInfoSentBySECC.getMeterReading() != null && !meterInfoSentBySECC.getMeterReading().equals(meterInfoReceivedFromEVCC.getMeterReading())) ||
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(meterInfoSentBySECC.getMeterStatus() != null && !meterInfoSentBySECC.getMeterStatus().equals(meterInfoReceivedFromEVCC.getMeterStatus())) ||
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(meterInfoSentBySECC.getSigMeterReading() != null && !Arrays.equals(meterInfoSentBySECC.getSigMeterReading(), meterInfoReceivedFromEVCC.getSigMeterReading())) ||
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(meterInfoSentBySECC.getTMeter() != null && !meterInfoSentBySECC.getTMeter().equals(meterInfoReceivedFromEVCC.getTMeter()))
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) return false;
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else return true;
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}
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}
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protected void setEVSEStatus(MeteringReceiptResType meteringReceiptRes) {
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if (getCommSessionContext().getRequestedEnergyTransferMode().toString().startsWith("AC")) {
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/*
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* The MessageHandler method getJAXBElement() cannot be used here because of the difference in the
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* class name (ACEVSEStatus) and the name in the XSD (AC_EVSEStatus)
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*/
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JAXBElement jaxbEVSEStatus = new JAXBElement(new QName("urn:iso:15118:2:2013:MsgDataTypes", "AC_EVSEStatus"),
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ACEVSEStatusType.class,
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getCommSessionContext().getACEvseController().getACEVSEStatus(EVSENotificationType.NONE));
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meteringReceiptRes.setEVSEStatus(jaxbEVSEStatus);
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} else if (getCommSessionContext().getRequestedEnergyTransferMode().toString().startsWith("DC")) {
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/*
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* The MessageHandler method getJAXBElement() cannot be used here because of the difference in the
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* class name (DCEVSEStatus) and the name in the XSD (DC_EVSEStatus)
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*/
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JAXBElement jaxbACEVSEStatus = new JAXBElement(new QName("urn:iso:15118:2:2013:MsgDataTypes", "DC_EVSEStatus"),
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DCEVSEStatusType.class,
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getCommSessionContext().getDCEvseController().getDCEVSEStatus(EVSENotificationType.NONE));
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meteringReceiptRes.setEVSEStatus(jaxbACEVSEStatus);
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} else {
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getLogger().warn("RequestedEnergyTransferMode '" + getCommSessionContext().getRequestedEnergyTransferMode().toString() +
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"is neither of type AC nor DC");
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}
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}
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@Override
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public BodyBaseType getResponseMessage() {
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return meteringReceiptRes;
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}
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} |