org.thoughtcrime.securesms.mms.IncomingMmsConnection.java Source code

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Here is the source code for org.thoughtcrime.securesms.mms.IncomingMmsConnection.java

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/**
 * Copyright (C) 2014 Open Whisper Systems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.thoughtcrime.securesms.mms;

import android.content.Context;
import android.net.Uri;
import android.util.Log;

import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGetHC4;
import org.apache.http.client.methods.HttpUriRequest;

import java.io.IOException;
import java.util.Arrays;

import ws.com.google.android.mms.pdu.PduParser;
import ws.com.google.android.mms.pdu.RetrieveConf;

public class IncomingMmsConnection extends MmsConnection {
    private static final String TAG = IncomingMmsConnection.class.getSimpleName();

    public IncomingMmsConnection(Context context, Apn apn) {
        super(context, apn);
    }

    @Override
    protected HttpUriRequest constructRequest(boolean useProxy) throws IOException {
        HttpGetHC4 request = new HttpGetHC4(apn.getMmsc());
        request.addHeader("Accept", "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic");
        if (useProxy) {
            HttpHost proxy = new HttpHost(apn.getProxy(), apn.getPort());
            request.setConfig(RequestConfig.custom().setProxy(proxy).build());
        }
        return request;
    }

    public static boolean isConnectionPossible(Context context, String apn) {
        try {
            getApn(context, apn);
            return true;
        } catch (ApnUnavailableException e) {
            return false;
        }
    }

    public RetrieveConf retrieve(boolean usingMmsRadio, boolean useProxyIfAvailable)
            throws IOException, ApnUnavailableException {
        byte[] pdu = null;

        final boolean useProxy = useProxyIfAvailable && apn.hasProxy();
        final String targetHost = useProxy ? apn.getProxy() : Uri.parse(apn.getMmsc()).getHost();
        try {
            if (checkRouteToHost(context, targetHost, usingMmsRadio)) {
                Log.w(TAG, "got successful route to host " + targetHost);
                pdu = makeRequest(useProxy);
            }
        } catch (IOException ioe) {
            Log.w(TAG, ioe);
        }

        if (pdu == null) {
            throw new IOException("Connection manager could not obtain route to host.");
        }

        RetrieveConf retrieved = (RetrieveConf) new PduParser(pdu).parse();

        if (retrieved == null) {
            Log.w(TAG, "Couldn't parse PDU, byte response: " + Arrays.toString(pdu));
            Log.w(TAG, "Couldn't parse PDU, ASCII:         " + new String(pdu));
            throw new IOException("Bad retrieved PDU");
        }

        return retrieved;
    }
}