117 lines
4.1 KiB
Java
117 lines
4.1 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.service.devices.miband;
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import android.support.annotation.Nullable;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import nodomain.freeyourgadget.gadgetbridge.util.ArrayUtils;
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/**
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* FW1 is Mi Band firmware
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* FW2 is heartrate firmware
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*/
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public class Mi1SFirmwareInfo extends AbstractMi1SFirmwareInfo {
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private static final Logger LOG = LoggerFactory.getLogger(Mi1SFirmwareInfo.class);
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private static final byte[] DOUBLE_FW_HEADER = new byte[] {
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(byte)0x78,
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(byte)0x75,
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(byte)0x63,
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(byte)0x6b
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};
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private static final int DOUBLE_FW_HEADER_OFFSET = 0;
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private final Mi1SFirmwareInfoFW1 fw1Info;
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private final Mi1SFirmwareInfoFW2 fw2Info;
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private Mi1SFirmwareInfo(byte[] wholeFirmwareBytes) {
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super(wholeFirmwareBytes);
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fw1Info = new Mi1SFirmwareInfoFW1(wholeFirmwareBytes);
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fw2Info = new Mi1SFirmwareInfoFW2(wholeFirmwareBytes);
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}
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protected boolean isHeaderValid() {
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// TODO: not sure if this is a correct check!
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return ArrayUtils.equals(DOUBLE_FW_HEADER, wholeFirmwareBytes, DOUBLE_FW_HEADER_OFFSET, DOUBLE_FW_HEADER_OFFSET + DOUBLE_FW_HEADER.length);
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}
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@Override
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public void checkValid() throws IllegalArgumentException {
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super.checkValid();
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int firstEndIndex = getFirst().getFirmwareOffset() + getFirst().getFirmwareLength();
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if (getSecond().getFirmwareOffset() < firstEndIndex) {
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throw new IllegalArgumentException("Invalid firmware offsets/lengths: " + getLengthsOffsetsString());
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}
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int secondEndIndex = getSecond().getFirmwareOffset();
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if (wholeFirmwareBytes.length < firstEndIndex || wholeFirmwareBytes.length < secondEndIndex) {
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throw new IllegalArgumentException("Invalid firmware size, or invalid offsets/lengths: " + getLengthsOffsetsString());
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}
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if (getSecond().getFirmwareOffset() < firstEndIndex) {
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throw new IllegalArgumentException("Invalid firmware, second fw starts before first fw ends: " + firstEndIndex + "," + getSecond().getFirmwareOffset());
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}
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}
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protected String getLengthsOffsetsString() {
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return getFirst().getFirmwareOffset() + "," + getFirst().getFirmwareLength()
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+ "; "
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+ getSecond().getFirmwareOffset() + "," + getSecond().getFirmwareLength();
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}
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@Override
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public AbstractMiFirmwareInfo getFirst() {
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return fw1Info;
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}
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@Override
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public AbstractMiFirmwareInfo getSecond() {
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return fw2Info;
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}
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public static
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@Nullable
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Mi1SFirmwareInfo getInstance(byte[] wholeFirmwareBytes) {
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Mi1SFirmwareInfo info = new Mi1SFirmwareInfo(wholeFirmwareBytes);
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if (info.isGenerallySupportedFirmware()) {
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return info;
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}
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LOG.info("firmware not supported");
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return null;
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}
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@Override
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protected boolean isGenerallySupportedFirmware() {
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try {
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if (!isHeaderValid()) {
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LOG.info("unrecognized header");
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return false;
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}
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return fw1Info.isGenerallySupportedFirmware()
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&& fw2Info.isGenerallySupportedFirmware()
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&& fw1Info.getFirmwareBytes().length > 0
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&& fw2Info.getFirmwareBytes().length > 0;
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} catch (IndexOutOfBoundsException ex) {
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LOG.warn("invalid firmware or bug: " + ex.getLocalizedMessage(), ex);
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return false;
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} catch (IllegalArgumentException ex) {
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LOG.warn("not supported 1S firmware: " + ex.getLocalizedMessage(), ex);
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return false;
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}
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}
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@Override
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public int getFirmwareOffset() {
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throw new UnsupportedOperationException("call this method on getFirmwareXInfo()");
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}
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@Override
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public int getFirmwareLength() {
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throw new UnsupportedOperationException("call this method on getFirmwareXInfo()");
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}
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@Override
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public int getFirmwareVersion() {
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throw new UnsupportedOperationException("call this method on getFirmwareXInfo()");
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}
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}
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