org.apache.james.jmap.crypto.SignedTokenManager Maven / Gradle / Ivy

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package org.apache.james.jmap.crypto;

import javax.inject.Inject;

import org.apache.james.jmap.api.SimpleTokenManager;
import org.apache.james.jmap.model.SignedExpiringToken;
import org.apache.james.util.date.ZonedDateTimeProvider;

import com.google.common.base.Preconditions;

public class SignedTokenManager implements SimpleTokenManager {

    private final SignatureHandler signatureHandler;
    private final ZonedDateTimeProvider zonedDateTimeProvider;

    @Inject
    public SignedTokenManager(SignatureHandler signatureHandler, ZonedDateTimeProvider zonedDateTimeProvider) {
        this.signatureHandler = signatureHandler;
        this.zonedDateTimeProvider = zonedDateTimeProvider;
    }

    @Override
    public TokenStatus getValidity(SignedExpiringToken token) {
        Preconditions.checkNotNull(token);
        if (! isCorrectlySigned(token)) {
            return TokenStatus.INVALID;
        }
        if (isExpired(token)) {
            return TokenStatus.EXPIRED;
        }
        return TokenStatus.OK;
    }
    
    @Override
    public boolean isValid(SignedExpiringToken token) {
        Preconditions.checkNotNull(token);
        return TokenStatus.OK.equals(getValidity(token));
    }

    private boolean isCorrectlySigned(SignedExpiringToken token) {
        return signatureHandler.verify(token.getSignedContent(), token.getSignature());
    }

    private boolean isExpired(SignedExpiringToken token) {
        return token.getExpirationDate().isBefore(zonedDateTimeProvider.get());
    }
}