Refactor MMS send/download to be synchronous.
1) Make the radio change a synchronous action with a timeout. 2) Move the send logic into an MmsTransport, in preparation for UniversalTransport composition. 3) Move the download logic into a synchronous receiver.pull/1/head
Moxie Marlinspike
12 years ago
parent
53803630d4
commit
fd045f2354
@ -0,0 +1,143 @@
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package org.thoughtcrime.securesms.mms;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.os.PowerManager;
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import android.util.Log;
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import org.thoughtcrime.securesms.util.Util;
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public class MmsRadio {
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private static MmsRadio instance;
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public static synchronized MmsRadio getInstance(Context context) {
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if (instance == null)
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instance = new MmsRadio(context);
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return instance;
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}
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///
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private static final String FEATURE_ENABLE_MMS = "enableMMS";
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private static final int APN_ALREADY_ACTIVE = 0;
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public static final int TYPE_MOBILE_MMS = 2;
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private final Context context;
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private ConnectivityManager connectivityManager;
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private ConnectivityListener connectivityListener;
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private PowerManager.WakeLock wakeLock;
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private int connectedCounter = 0;
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private MmsRadio(Context context) {
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PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
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this.context = context;
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this.connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
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this.wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MMS Connection");
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this.wakeLock.setReferenceCounted(true);
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}
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public String getApnInformation() {
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return connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS).getExtraInfo();
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}
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public synchronized void disconnect() {
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Log.w("MmsRadio", "MMS Radio Disconnect Called...");
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wakeLock.release();
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connectedCounter--;
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Log.w("MmsRadio", "Reference count: " + connectedCounter);
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if (connectedCounter == 0) {
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Log.w("MmsRadio", "Turning off MMS radio...");
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connectivityManager.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, FEATURE_ENABLE_MMS);
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if (connectivityListener != null) {
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Log.w("MmsRadio", "Unregistering receiver...");
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context.unregisterReceiver(connectivityListener);
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connectivityListener = null;
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}
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}
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}
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public synchronized void connect() throws MmsRadioException {
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int status = connectivityManager.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
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FEATURE_ENABLE_MMS);
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Log.w("MmsRadio", "startUsingNetworkFeature status: " + status);
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if (status == APN_ALREADY_ACTIVE) {
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wakeLock.acquire();
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connectedCounter++;
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return;
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} else {
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wakeLock.acquire();
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connectedCounter++;
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if (connectivityListener == null) {
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IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
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connectivityListener = new ConnectivityListener();
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context.registerReceiver(connectivityListener, filter);
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}
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Util.wait(this, 30000);
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if (!isConnected()) {
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Log.w("MmsRadio", "Got back from connectivity wait, and not connected...");
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disconnect();
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throw new MmsRadioException("Unable to successfully enable MMS radio.");
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}
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}
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}
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private boolean isConnected() {
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NetworkInfo info = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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if ((info == null) || (info.getType() != TYPE_MOBILE_MMS) || !info.isConnected())
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return false;
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return true;
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}
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private boolean isConnectivityPossible() {
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NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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return networkInfo != null && networkInfo.isAvailable();
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}
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private boolean isConnectivityFailure() {
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NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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return networkInfo == null || networkInfo.getDetailedState() == NetworkInfo.DetailedState.FAILED;
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}
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private synchronized void issueConnectivityChange() {
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if (isConnected()) {
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Log.w("MmsRadio", "Notifying connected...");
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notifyAll();
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return;
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}
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if (!isConnected() && (isConnectivityFailure() || !isConnectivityPossible())) {
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Log.w("MmsRadio", "Notifying not connected...");
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notifyAll();
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return;
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}
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}
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private class ConnectivityListener extends BroadcastReceiver {
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@Override
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public void onReceive(Context context, Intent intent) {
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Log.w("MmsRadio", "Got connectivity change...");
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issueConnectivityChange();
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}
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}
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}
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@ -0,0 +1,7 @@
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package org.thoughtcrime.securesms.mms;
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public class MmsRadioException extends Throwable {
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public MmsRadioException(String s) {
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super(s);
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}
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}
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@ -1,123 +0,0 @@
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/**
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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.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.os.PowerManager;
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import android.os.PowerManager.WakeLock;
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import android.util.Log;
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public abstract class MmscProcessor {
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private static final String FEATURE_ENABLE_MMS = "enableMMS";
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private static final int APN_ALREADY_ACTIVE = 0;
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public static final int TYPE_MOBILE_MMS = 2;
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private ConnectivityManager connectivityManager;
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private ConnectivityListener connectivityListener;
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private WakeLock wakeLock;
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protected final Context context;
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public MmscProcessor(Context context) {
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this.context = context;
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PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
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this.connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
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this.wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MMS Connection");
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this.wakeLock.setReferenceCounted(false);
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}
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protected String getApnInformation() {
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return connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS).getExtraInfo();
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}
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protected boolean isConnected() {
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NetworkInfo info = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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Log.w("MmsService", "NetworkInfo: " + info);
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if ((info == null) || (info.getType() != TYPE_MOBILE_MMS) || !info.isConnected())
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return false;
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return true;
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}
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protected abstract String getConnectivityAction();
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protected void issueConnectivityRequest() {
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int status = connectivityManager.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, FEATURE_ENABLE_MMS);
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Log.w("MmscProcessor", "startUsingNetworkFeature status: " + status);
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if (status == APN_ALREADY_ACTIVE) {
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issueConnectivityChange();
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} else if (connectivityListener == null) {
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IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
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connectivityListener = new ConnectivityListener();
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context.registerReceiver(connectivityListener, filter);
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wakeLock.acquire();
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}
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}
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protected boolean isConnectivityFailure() {
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NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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return networkInfo == null || networkInfo.getDetailedState() == NetworkInfo.DetailedState.FAILED;
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}
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protected boolean isConnectivityPossible() {
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NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
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Log.w("MmsService", "Got network info: " + networkInfo);
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return networkInfo != null && networkInfo.isAvailable();
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}
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protected void finishConnectivity() {
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Log.w("MmsService", "Calling stop using network feature!");
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connectivityManager.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, FEATURE_ENABLE_MMS);
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if (connectivityListener != null) {
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context.unregisterReceiver(connectivityListener);
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connectivityListener = null;
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}
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if (this.wakeLock.isHeld())
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this.wakeLock.release();
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}
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private void issueConnectivityChange() {
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Intent intent = new Intent(context, SendReceiveService.class);
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intent.setAction(getConnectivityAction());
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context.startService(intent);
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}
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private class ConnectivityListener extends BroadcastReceiver {
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@Override
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public void onReceive(Context context, Intent intent) {
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Log.w("MmsService", "Dispatching connectivity change...");
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issueConnectivityChange();
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Log.w("MmsService", "Dispatched...");
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}
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}
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}
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@ -0,0 +1,157 @@
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package org.thoughtcrime.securesms.transport;
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import android.content.Context;
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import android.telephony.TelephonyManager;
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import android.util.Log;
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import android.util.Pair;
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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.MmsDatabase;
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import org.thoughtcrime.securesms.mms.MmsRadio;
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import org.thoughtcrime.securesms.mms.MmsRadioException;
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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.protocol.WirePrefix;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.util.Hex;
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import java.io.IOException;
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import java.util.Arrays;
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import ws.com.google.android.mms.ContentType;
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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.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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public class MmsTransport {
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private final Context context;
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private final MasterSecret masterSecret;
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private final MmsRadio radio;
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public MmsTransport(Context context, MasterSecret masterSecret) {
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this.context = context;
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this.masterSecret = masterSecret;
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this.radio = MmsRadio.getInstance(context);
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}
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public Pair<byte[], Integer> deliver(SendReq message) throws UndeliverableMessageException {
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try {
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if (isCdmaDevice()) {
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Log.w("MmsTransport", "Sending MMS directly without radio change...");
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try {
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return sendMms(message, false, false);
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} catch (IOException e) {
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Log.w("MmsTransport", e);
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}
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}
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Log.w("MmsTransport", "Sending MMS with radio change...");
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radio.connect();
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try {
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Pair<byte[], Integer> result = sendMms(message, true, false);
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radio.disconnect();
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return result;
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} catch (IOException e) {
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Log.w("MmsTransport", e);
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}
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Log.w("MmsTransport", "Sending MMS with radio change and proxy...");
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try {
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Pair<byte[], Integer> result = sendMms(message, true, true);
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radio.disconnect();
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return result;
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} catch (IOException ioe) {
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Log.w("MmsTransport", ioe);
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radio.disconnect();
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throw new UndeliverableMessageException(ioe);
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}
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} catch (MmsRadioException mre) {
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Log.w("MmsTransport", mre);
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throw new UndeliverableMessageException(mre);
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}
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}
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private Pair<byte[], Integer> sendMms(SendReq message, boolean usingMmsRadio, boolean useProxy)
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throws IOException, UndeliverableMessageException
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{
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String number = ((TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE)).getLine1Number();
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if (MmsDatabase.Types.isSecureType(message.getDatabaseMessageBox())) {
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message = getEncryptedMessage(message);
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}
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if (number != null && number.trim().length() != 0) {
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message.setFrom(new EncodedStringValue(number));
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}
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SendConf conf = MmsSendHelper.sendMms(context, new PduComposer(context, message).make(),
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radio.getApnInformation(), usingMmsRadio, useProxy);
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for (int i=0;i<message.getBody().getPartsNum();i++) {
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Log.w("MmsSender", "Sent MMS part of content-type: " + new String(message.getBody().getPart(i).getContentType()));
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}
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if (conf == null) {
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throw new UndeliverableMessageException("No M-Send.conf received in response to send.");
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} else if (conf.getResponseStatus() != PduHeaders.RESPONSE_STATUS_OK) {
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throw new UndeliverableMessageException("Got bad response: " + conf.getResponseStatus());
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} else if (isInconsistentResponse(message, conf)) {
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throw new UndeliverableMessageException("Mismatched response!");
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} else {
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return new Pair<byte[], Integer>(conf.getMessageId(), conf.getResponseStatus());
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}
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}
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private SendReq getEncryptedMessage(SendReq pdu) {
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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[] encryptedPduBytes = getEncryptedPdu(masterSecret, recipient, pduBytes);
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PduBody body = new PduBody();
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PduPart part = new PduPart();
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SendReq encryptedPdu = new SendReq(pdu.getPduHeaders(), body);
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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(encryptedPduBytes);
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body.addPart(part);
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encryptedPdu.setSubject(new EncodedStringValue(WirePrefix.calculateEncryptedMmsSubject()));
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encryptedPdu.setBody(body);
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return encryptedPdu;
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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,
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new Recipient(null, recipient, null, null),
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new TextTransport());
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return cipher.encryptMessage(pduBytes);
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}
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}
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private boolean isInconsistentResponse(SendReq message, SendConf response) {
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Log.w("MmsTransport", "Comparing: " + Hex.toString(message.getTransactionId()));
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Log.w("MmsTransport", "With: " + Hex.toString(response.getTransactionId()));
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return !Arrays.equals(message.getTransactionId(), response.getTransactionId());
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}
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private boolean isCdmaDevice() {
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return ((TelephonyManager)context
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.getSystemService(Context.TELEPHONY_SERVICE))
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.getPhoneType() == TelephonyManager.PHONE_TYPE_CDMA;
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}
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}
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