use Tor to download map tiles if configured to do so

src/main/java/eu/siacs/conversations/http/HttpConnectionManager.java

@@ -77,7 +77,7 @@ public class HttpConnectionManager extends AbstractConnectionManager {
 		}
 	}
 
-	public Proxy getProxy() throws IOException {
+	public static Proxy getProxy() throws IOException {
 		return new Proxy(Proxy.Type.HTTP, new InetSocketAddress(InetAddress.getByAddress(new byte[]{127,0,0,1}), 8118));
 	}
 }

src/main/java/eu/siacs/conversations/http/HttpDownloadConnection.java

@@ -222,7 +222,7 @@ public class HttpDownloadConnection implements Transferable {
 				changeStatus(STATUS_CHECKING);
 				HttpURLConnection connection;
 				if (mUseTor) {
-					connection = (HttpURLConnection) mUrl.openConnection(mHttpConnectionManager.getProxy());
+					connection = (HttpURLConnection) mUrl.openConnection(HttpConnectionManager.getProxy());
 				} else {
 					connection = (HttpURLConnection) mUrl.openConnection();
 				}
@@ -290,7 +290,7 @@ public class HttpDownloadConnection implements Transferable {
 			try {
 				wakeLock.acquire();
 				if (mUseTor) {
-					connection = (HttpURLConnection) mUrl.openConnection(mHttpConnectionManager.getProxy());
+					connection = (HttpURLConnection) mUrl.openConnection(HttpConnectionManager.getProxy());
 				} else {
 					connection = (HttpURLConnection) mUrl.openConnection();
 				}

src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java

@@ -180,7 +180,7 @@ public class HttpUploadConnection implements Transferable {
 			wakeLock.acquire(readTimeout);
 			Log.d(Config.LOGTAG, "uploading to " + mPutUrl.toString()+ " w/ read timeout of "+readTimeout+"s");
 			if (mUseTor) {
-				connection = (HttpURLConnection) mPutUrl.openConnection(mHttpConnectionManager.getProxy());
+				connection = (HttpURLConnection) mPutUrl.openConnection(HttpConnectionManager.getProxy());
 			} else {
 				connection = (HttpURLConnection) mPutUrl.openConnection();
 			}

src/main/java/eu/siacs/conversations/ui/LocationActivity.java

@@ -14,6 +14,7 @@ import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.provider.Settings;
+import android.support.annotation.BoolRes;
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
 import android.util.Log;
@@ -29,10 +30,12 @@ import org.osmdroid.views.MapView;
 import org.osmdroid.views.overlay.Overlay;
 
 import java.io.File;
+import java.io.IOException;
 
 import eu.siacs.conversations.BuildConfig;
 import eu.siacs.conversations.Config;
 import eu.siacs.conversations.R;
+import eu.siacs.conversations.http.HttpConnectionManager;
 import eu.siacs.conversations.ui.util.LocationHelper;
 import eu.siacs.conversations.ui.widget.Marker;
 import eu.siacs.conversations.ui.widget.MyLocation;
@@ -100,6 +103,13 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 		final IConfigurationProvider config = Configuration.getInstance();
 		config.load(ctx, getPreferences());
 		config.setUserAgentValue(BuildConfig.APPLICATION_ID + "_" + BuildConfig.VERSION_CODE);
+		if (Config.FORCE_ORBOT || getBooleanPreference("use_tor", R.bool.use_tor)) {
+			try {
+				config.setHttpProxy(HttpConnectionManager.getProxy());
+			} catch (IOException e) {
+				throw new RuntimeException("Unable to configure proxy");
+			}
+		}
 
 		final File f = new File(ctx.getCacheDir() + "/tiles");
 		try {
@@ -286,6 +296,10 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 	}
 
+	protected boolean getBooleanPreference(String name, @BoolRes int res) {
+		return getPreferences().getBoolean(name, getResources().getBoolean(res));
+	}
+
 	protected boolean isLocationEnabled() {
 		try {
 			final int locationMode = Settings.Secure.getInt(getContentResolver(), Settings.Secure.LOCATION_MODE);

src/main/java/eu/siacs/conversations/ui/XmppActivity.java

@@ -33,6 +33,7 @@ import android.os.IBinder;
 import android.os.PowerManager;
 import android.os.SystemClock;
 import android.preference.PreferenceManager;
+import android.support.annotation.BoolRes;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AlertDialog.Builder;
@@ -399,7 +400,7 @@ public abstract class XmppActivity extends ActionBarActivity {
 		setTheme(this.mTheme);
 
 		this.mUsingEnterKey = usingEnterKey();
-		mUseSubject = getPreferences().getBoolean("use_subject", getResources().getBoolean(R.bool.use_subject));
+		mUseSubject = getBooleanPreference("use_subject", R.bool.use_subject);
 	}
 
 	protected boolean isCameraFeatureAvailable() {
@@ -449,6 +450,10 @@ public abstract class XmppActivity extends ActionBarActivity {
 		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 	}
 
+	protected boolean getBooleanPreference(String name, @BoolRes int res) {
+		return getPreferences().getBoolean(name, getResources().getBoolean(res));
+	}
+
 	public boolean useSubjectToIdentifyConference() {
 		return mUseSubject;
 	}