219 lines
8.8 KiB
Java
219 lines
8.8 KiB
Java
/**
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* Copyright (C) 2011 Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.thoughtcrime.securesms.service;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Handler;
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import android.telephony.TelephonyManager;
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import android.util.Log;
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import org.thoughtcrime.securesms.R;
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import org.thoughtcrime.securesms.crypto.MasterSecret;
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import org.thoughtcrime.securesms.crypto.SessionCipher;
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import org.thoughtcrime.securesms.database.DatabaseFactory;
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import org.thoughtcrime.securesms.database.MmsDatabase;
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import org.thoughtcrime.securesms.mms.MmsSendHelper;
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import org.thoughtcrime.securesms.mms.TextTransport;
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import org.thoughtcrime.securesms.notifications.MessageNotifier;
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import org.thoughtcrime.securesms.protocol.WirePrefix;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.recipients.Recipients;
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import org.thoughtcrime.securesms.util.Hex;
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import ws.com.google.android.mms.ContentType;
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import ws.com.google.android.mms.MmsException;
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import ws.com.google.android.mms.pdu.EncodedStringValue;
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import ws.com.google.android.mms.pdu.PduBody;
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import ws.com.google.android.mms.pdu.PduComposer;
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import ws.com.google.android.mms.pdu.PduHeaders;
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import ws.com.google.android.mms.pdu.PduParser;
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import ws.com.google.android.mms.pdu.PduPart;
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import ws.com.google.android.mms.pdu.SendConf;
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import ws.com.google.android.mms.pdu.SendReq;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.LinkedList;
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public class MmsSender extends MmscProcessor {
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private final LinkedList<SendReq[]> pendingMessages = new LinkedList<SendReq[]>();
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private final Handler toastHandler;
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public MmsSender(Context context, Handler toastHandler) {
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super(context);
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this.toastHandler = toastHandler;
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}
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public void process(MasterSecret masterSecret, Intent intent) {
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if (intent.getAction().equals(SendReceiveService.SEND_MMS_ACTION)) {
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long messageId = intent.getLongExtra("message_id", -1);
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MmsDatabase database = DatabaseFactory.getEncryptingMmsDatabase(context, masterSecret);
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try {
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SendReq[] sendRequests;
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if (messageId == -1) {
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sendRequests = database.getOutgoingMessages();
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} else {
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sendRequests = new SendReq[1];
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sendRequests[0] = database.getSendRequest(messageId);
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}
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if (sendRequests != null && sendRequests.length > 0)
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handleSendMms(sendRequests, messageId != -1);
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} catch (MmsException me) {
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Log.w("MmsSender", me);
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if (messageId != -1)
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database.markAsSentFailed(messageId);
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}
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} else if (intent.getAction().equals(SendReceiveService.SEND_MMS_CONNECTIVITY_ACTION)) {
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handleConnectivityChange(masterSecret);
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}
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}
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protected void handleConnectivityChange(MasterSecret masterSecret) {
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if (!isConnected())
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return;
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if (!pendingMessages.isEmpty()) handleSendMmsContinued(masterSecret, pendingMessages.remove());
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else finishConnectivity();
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}
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private void handleSendMms(SendReq[] sendRequests, boolean targeted) {
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if (!isConnectivityPossible()) {
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if (targeted) {
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toastHandler
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.obtainMessage(0, context.getString(R.string.MmsSender_currently_unable_to_send_your_mms_message))
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.sendToTarget();
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}
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// for (int i=0;i<sendRequests.length;i++)
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// DatabaseFactory.getMmsDatabase(context).markAsSentFailed(sendRequests[i].getDatabaseMessageId());
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} else {
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pendingMessages.add(sendRequests);
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issueConnectivityRequest();
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}
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}
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private boolean isInconsistentResponse(SendReq send, SendConf response) {
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Log.w("MmsSenderService", "Comparing: " + Hex.toString(send.getTransactionId()));
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Log.w("MmsSenderService", "With: " + Hex.toString(response.getTransactionId()));
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return !Arrays.equals(send.getTransactionId(), response.getTransactionId());
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}
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private byte[] getEncryptedPdu(MasterSecret masterSecret, String recipient, byte[] pduBytes) {
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synchronized (SessionCipher.CIPHER_LOCK) {
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SessionCipher cipher = new SessionCipher(context, masterSecret, new Recipient(null, recipient, null, null), new TextTransport());
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return cipher.encryptMessage(pduBytes);
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}
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}
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private SendReq getEncryptedMms(MasterSecret masterSecret, SendReq pdu, long messageId) {
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Log.w("MmsSender", "Sending Secure MMS.");
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EncodedStringValue[] encodedRecipient = pdu.getTo();
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String recipient = encodedRecipient[0].getString();
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byte[] pduBytes = new PduComposer(context, pdu).make();
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byte[] encryptedPdu = getEncryptedPdu(masterSecret, recipient, pduBytes);
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Log.w("MmsSendeR", "Got encrypted bytes: " + encryptedPdu.length);
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PduBody body = new PduBody();
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PduPart part = new PduPart();
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part.setContentId((System.currentTimeMillis()+"").getBytes());
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part.setContentType(ContentType.TEXT_PLAIN.getBytes());
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part.setName((System.currentTimeMillis()+"").getBytes());
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part.setData(encryptedPdu);
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body.addPart(part);
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pdu.setSubject(new EncodedStringValue(WirePrefix.calculateEncryptedMmsSubject()));
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pdu.setBody(body);
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return pdu;
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}
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private void sendMms(MmsDatabase db, SendReq pdu, String number, long messageId, boolean secure) {
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try {
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if (number != null && number.trim().length() != 0)
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pdu.setFrom(new EncodedStringValue(number));
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byte[] response = MmsSendHelper.sendMms(context, new PduComposer(context, pdu).make(), getApnInformation());
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SendConf conf = (SendConf) new PduParser(response).parse();
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for (int i=0;i<pdu.getBody().getPartsNum();i++) {
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Log.w("MmsSender", "Sent MMS part of content-type: " + new String(pdu.getBody().getPart(i).getContentType()));
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}
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long threadId = DatabaseFactory.getMmsDatabase(context).getThreadIdForMessage(messageId);
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Recipients recipients = DatabaseFactory.getThreadDatabase(context).getRecipientsForThreadId(context, threadId);
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if (conf == null) {
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db.markAsSentFailed(messageId);
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MessageNotifier.notifyMessageDeliveryFailed(context, recipients, threadId);
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Log.w("MmsSender", "No M-Send.conf received in response to send.");
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return;
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} else if (conf.getResponseStatus() != PduHeaders.RESPONSE_STATUS_OK) {
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Log.w("MmsSender", "Got bad response: " + conf.getResponseStatus());
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db.updateResponseStatus(messageId, conf.getResponseStatus());
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db.markAsSentFailed(messageId);
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MessageNotifier.notifyMessageDeliveryFailed(context, recipients, threadId);
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return;
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} else if (isInconsistentResponse(pdu, conf)) {
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db.markAsSentFailed(messageId);
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MessageNotifier.notifyMessageDeliveryFailed(context, recipients, threadId);
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Log.w("MmsSender", "Got a response for the wrong transaction?");
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return;
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} else {
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Log.w("MmsSender", "Successful send! " + messageId);
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if (!secure)
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db.markAsSent(messageId, conf.getMessageId(), conf.getResponseStatus());
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else
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db.markAsSecureSent(messageId, conf.getMessageId(), conf.getResponseStatus());
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}
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} catch (IOException ioe) {
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Log.w("MmsSender", ioe);
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db.markAsSentFailed(messageId);
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}
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}
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private void handleSendMmsContinued(MasterSecret masterSecret, SendReq[] requests) {
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Log.w("MmsSenderService", "Handling MMS send continuation...");
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MmsDatabase db = DatabaseFactory.getEncryptingMmsDatabase(context, masterSecret);
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String number = ((TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE)).getLine1Number();
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for (int i=0;i<requests.length;i++) {
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SendReq request = requests[i];
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long messageId = request.getDatabaseMessageId();
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long messageBox = request.getDatabaseMessageBox();
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if (MmsDatabase.Types.isSecureMmsBox(messageBox))
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request = getEncryptedMms(masterSecret, request, messageId);
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sendMms(db, request, number, messageId, MmsDatabase.Types.isSecureMmsBox(messageBox));
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}
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if (this.pendingMessages.isEmpty())
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finishConnectivity();
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}
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@Override
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protected String getConnectivityAction() {
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return SendReceiveService.SEND_MMS_CONNECTIVITY_ACTION;
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}
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}
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