org.whispersystems.textsecuregcm.util.UrlSigner.java Source code

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Here is the source code for org.whispersystems.textsecuregcm.util.UrlSigner.java

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/**
 * Copyright (C) 2013 Open WhisperSystems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.whispersystems.textsecuregcm.util;

import com.amazonaws.HttpMethod;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;
import org.whispersystems.textsecuregcm.configuration.S3Configuration;

import java.net.URL;
import java.util.Date;

public class UrlSigner {

    private static final long DURATION = 60 * 60 * 1000;

    private final AWSCredentials credentials;
    private final String bucket;

    public UrlSigner(S3Configuration config) {
        this.credentials = new BasicAWSCredentials(config.getAccessKey(), config.getAccessSecret());
        this.bucket = config.getAttachmentsBucket();
    }

    public URL getPreSignedUrl(long attachmentId, HttpMethod method) {
        AmazonS3 client = new AmazonS3Client(credentials);
        GeneratePresignedUrlRequest request = new GeneratePresignedUrlRequest(bucket, String.valueOf(attachmentId),
                method);

        request.setExpiration(new Date(System.currentTimeMillis() + DURATION));
        request.setContentType("application/octet-stream");

        return client.generatePresignedUrl(request);
    }

}