Examples with GetData org.openecard.common.apdu.GetData used on opensource projects

Example 1 with GetData

use of org.openecard.common.apdu.GetData in project open-ecard by ecsec.

the class TinySAL method dsiRead.

/**
 * The DSIRead function reads out the content of a specific DSI (Data Structure for Interoperability).
 * See BSI-TR-03112-4, version 1.1.2, section 3.4.9.
 *
 * @param request DSIRead
 * @return DSIReadResponse
 */
@Publish
@Override
public DSIReadResponse dsiRead(DSIRead request) {
    DSIReadResponse response = WSHelper.makeResponse(DSIReadResponse.class, WSHelper.makeResultOK());
    try {
        ConnectionHandleType connectionHandle = SALUtils.getConnectionHandle(request);
        CardStateEntry cardStateEntry = SALUtils.getCardStateEntry(states, connectionHandle);
        byte[] applicationID = cardStateEntry.getCurrentCardApplication().getApplicationIdentifier();
        String dsiName = request.getDSIName();
        byte[] slotHandle = connectionHandle.getSlotHandle();
        Assert.assertIncorrectParameter(dsiName, "The parameter DSIName is empty.");
        Assert.securityConditionDataSet(cardStateEntry, applicationID, dsiName, NamedDataServiceActionName.DSI_READ);
        if (cardStateEntry.getFCPOfSelectedEF() == null) {
            throw new PrerequisitesNotSatisfiedException("No DataSet to read selected.");
        }
        CardInfoWrapper cardInfoWrapper = cardStateEntry.getInfo();
        DataSetInfoType dataSetInfo = cardInfoWrapper.getDataSetByDsiName(dsiName);
        if (dataSetInfo == null) {
            // there is no data set which contains the given dsi name so the name should be an data set name
            dataSetInfo = cardInfoWrapper.getDataSetByName(dsiName);
            if (dataSetInfo != null) {
                if (!cardStateEntry.getFCPOfSelectedEF().getFileIdentifiers().isEmpty()) {
                    byte[] path = dataSetInfo.getDataSetPath().getEfIdOrPath();
                    byte[] fid = Arrays.copyOfRange(path, path.length - 2, path.length);
                    if (!Arrays.equals(fid, cardStateEntry.getFCPOfSelectedEF().getFileIdentifiers().get(0))) {
                        String msg = "Wrong DataSet for reading the DSI " + dsiName + " is selected.";
                        throw new PrerequisitesNotSatisfiedException(msg);
                    }
                }
                byte[] fileContent = CardUtils.readFile(cardStateEntry.getFCPOfSelectedEF(), env.getDispatcher(), slotHandle);
                response.setDSIContent(fileContent);
            } else {
                String msg = "The given DSIName does not related to any know DSI or DataSet.";
                throw new IncorrectParameterException(msg);
            }
        } else {
            // There exists a data set with the given dsi name
            // check whether the correct file is selected
            byte[] dataSetPath = dataSetInfo.getDataSetPath().getEfIdOrPath();
            byte[] dataSetFID = new byte[] { dataSetPath[dataSetPath.length - 2], dataSetPath[dataSetPath.length - 1] };
            if (Arrays.equals(dataSetFID, cardStateEntry.getFCPOfSelectedEF().getFileIdentifiers().get(0))) {
                DSIType dsi = cardInfoWrapper.getDSIbyName(dsiName);
                PathType dsiPath = dsi.getDSIPath();
                if (dsiPath.getTagRef() != null) {
                    TagRef tagReference = dsiPath.getTagRef();
                    byte[] tag = tagReference.getTag();
                    GetData getDataRequest;
                    if (tag.length == 2) {
                        getDataRequest = new GetData(GetData.INS_DATA, tag[0], tag[1]);
                        CardResponseAPDU cardResponse = getDataRequest.transmit(env.getDispatcher(), slotHandle, Collections.EMPTY_LIST);
                        byte[] responseData = cardResponse.getData();
                        while (cardResponse.getTrailer()[0] == (byte) 0x61) {
                            GetResponse allData = new GetResponse();
                            cardResponse = allData.transmit(env.getDispatcher(), slotHandle, Collections.EMPTY_LIST);
                            responseData = ByteUtils.concatenate(responseData, cardResponse.getData());
                        }
                        response.setDSIContent(responseData);
                    } else if (tag.length == 1) {
                        // how to determine Simple- or BER-TLV in this case correctly?
                        // Now try Simple-TLV first and if it fail try BER-TLV
                        getDataRequest = new GetData(GetData.INS_DATA, GetData.SIMPLE_TLV, tag[0]);
                        CardResponseAPDU cardResponse = getDataRequest.transmit(env.getDispatcher(), slotHandle, Collections.EMPTY_LIST);
                        byte[] responseData = cardResponse.getData();
                        // just an assumption
                        if (Arrays.equals(cardResponse.getTrailer(), new byte[] { (byte) 0x6A, (byte) 0x88 })) {
                            getDataRequest = new GetData(GetData.INS_DATA, GetData.BER_TLV_ONE_BYTE, tag[0]);
                            cardResponse = getDataRequest.transmit(env.getDispatcher(), slotHandle, Collections.EMPTY_LIST);
                            responseData = cardResponse.getData();
                        }
                        while (cardResponse.getTrailer()[0] == (byte) 0x61) {
                            GetResponse allData = new GetResponse();
                            cardResponse = allData.transmit(env.getDispatcher(), slotHandle, Collections.EMPTY_LIST);
                            responseData = ByteUtils.concatenate(responseData, cardResponse.getData());
                        }
                        response.setDSIContent(responseData);
                    }
                } else if (dsiPath.getIndex() != null) {
                    byte[] index = dsiPath.getIndex();
                    byte[] length = dsiPath.getLength();
                    List<byte[]> allowedResponse = new ArrayList<>();
                    allowedResponse.add(new byte[] { (byte) 0x90, (byte) 0x00 });
                    allowedResponse.add(new byte[] { (byte) 0x62, (byte) 0x82 });
                    if (cardStateEntry.getFCPOfSelectedEF().getDataElements().isLinear()) {
                        // in this case we use the index as record number and the length as length of record
                        ReadRecord readRecord = new ReadRecord(index[0]);
                        // NOTE: For record based files TR-0312-4 states to ignore the length field in case of records
                        CardResponseAPDU cardResponse = readRecord.transmit(env.getDispatcher(), slotHandle, allowedResponse);
                        response.setDSIContent(cardResponse.getData());
                    } else {
                        // in this case we use index as offset and length as the expected length
                        ReadBinary readBinary = new ReadBinary(ByteUtils.toShort(index), ByteUtils.toShort(length));
                        CardResponseAPDU cardResponse = readBinary.transmit(env.getDispatcher(), slotHandle, allowedResponse);
                        response.setDSIContent(cardResponse.getData());
                    }
                } else {
                    String msg = "The currently selected data set does not contain the DSI with the name " + dsiName;
                    throw new PrerequisitesNotSatisfiedException(msg);
                }
            }
        }
    } catch (ECardException e) {
        response.setResult(e.getResult());
    } catch (Exception e) {
        LOG.error(e.getMessage(), e);
        throwThreadKillException(e);
        response.setResult(WSHelper.makeResult(e));
    }
    return response;
}