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

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package org.apache.james.jmap.crypto;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

import javax.inject.Inject;

import org.apache.james.jmap.api.SimpleTokenFactory;
import org.apache.james.jmap.model.AttachmentAccessToken;
import org.apache.james.jmap.model.ContinuationToken;
import org.apache.james.util.date.ZonedDateTimeProvider;

import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;

public class SignedTokenFactory implements SimpleTokenFactory {

    private final SignatureHandler signatureHandler;
    private final ZonedDateTimeProvider zonedDateTimeProvider;

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

    @Override
    public ContinuationToken generateContinuationToken(String username) {
        Preconditions.checkNotNull(username);
        ZonedDateTime expirationTime = zonedDateTimeProvider.get().plusMinutes(15);
        return new ContinuationToken(username,
            expirationTime,
            signatureHandler.sign(
                    Joiner.on(ContinuationToken.SEPARATOR)
                        .join(username,
                            DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(expirationTime))));
    }

    @Override
    public AttachmentAccessToken generateAttachmentAccessToken(String username, String blobId) {
        Preconditions.checkArgument(! Strings.isNullOrEmpty(blobId));
        ZonedDateTime expirationTime = zonedDateTimeProvider.get().plusMinutes(5);
        return AttachmentAccessToken.builder()
                .username(username)
                .blobId(blobId)
                .expirationDate(expirationTime)
                .signature(signatureHandler.sign(Joiner.on(AttachmentAccessToken.SEPARATOR)
                                                    .join(blobId,
                                                            username, 
                                                            DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(expirationTime))))
                .build();
    }
}