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package se.leap.bitmaskclient.tor;
import android.content.Context;
import android.util.Log;
import androidx.annotation.Nullable;
import java.util.Observable;
import java.util.Vector;
import se.leap.bitmaskclient.R;
public class TorStatusObservable extends Observable {
private static final String TAG = TorStatusObservable.class.getSimpleName();
public enum TorStatus {
ON,
OFF,
STARTING,
STOPPING,
UNKOWN
}
public static final String LOG_TAG_TOR = "[TOR]";
public static final String LOG_TAG_SNOWFLAKE = "[SNOWFLAKE]";
private static TorStatusObservable instance;
private TorStatus status = TorStatus.UNKOWN;
private final TorNotificationManager torNotificationManager;
private String lastError;
private String lastTorLog;
private String lastSnowflakeLog;
private int port = -1;
private int bootstrapPercent = -1;
private Vector<String> lastLogs = new Vector<>(100);
private TorStatusObservable() {
torNotificationManager = new TorNotificationManager();
}
public static TorStatusObservable getInstance() {
if (instance == null) {
instance = new TorStatusObservable();
}
return instance;
}
public static TorStatus getStatus() {
return getInstance().status;
}
public static void logSnowflakeMessage(Context context, String message) {
Log.d(LOG_TAG_SNOWFLAKE, message);
addLog(message);
getInstance().lastSnowflakeLog = message;
if (getInstance().status != TorStatus.OFF) {
getInstance().torNotificationManager.buildTorNotification(context, getStringForCurrentStatus(context), getNotificationLog(), getBootstrapProgress());
}
instance.setChanged();
instance.notifyObservers();
}
private static String getNotificationLog() {
String snowflakeIcon = new String(Character.toChars(0x2744));
String snowflakeLog = getInstance().lastSnowflakeLog;
// we don't want to show the response json in the notification
if (snowflakeLog != null && snowflakeLog.contains("Received answer: {")) {
snowflakeLog = "Received Answer.";
}
return "Tor: " + getInstance().lastTorLog + "\n" +
snowflakeIcon + ": " + snowflakeLog;
}
public static int getBootstrapProgress() {
return getInstance().status == TorStatus.STARTING ? getInstance().bootstrapPercent : -1;
}
private static void addLog(String message) {
if (instance.lastLogs.size() > 100) {
instance.lastLogs.remove(99);
}
instance.lastLogs.add(0, message.trim());
}
public static void updateState(Context context, String status) {
updateState(context,status, -1, null);
}
public static void updateState(Context context, String status, int bootstrapPercent, @Nullable String logKey) {
try {
Log.d(TAG, "update tor state: " + status + " " + bootstrapPercent + " "+ logKey);
getInstance().status = TorStatus.valueOf(status);
if (bootstrapPercent != -1) {
getInstance().bootstrapPercent = bootstrapPercent;
}
if (getInstance().status == TorStatus.OFF) {
getInstance().torNotificationManager.cancelNotifications(context);
} else {
if (logKey != null) {
getInstance().lastTorLog = getStringFor(context, logKey);
addLog(getInstance().lastTorLog);
}
getInstance().torNotificationManager.buildTorNotification(context, getStringForCurrentStatus(context), getNotificationLog(), getBootstrapProgress());
}
instance.setChanged();
instance.notifyObservers();
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
private static String getStringFor(Context context, String key) {
switch (key) {
case "conn_pt":
return context.getString(R.string.log_conn_pt);
case "conn_done_pt":
return context.getString(R.string.log_conn_done_pt);
case "conn_done":
return context.getString(R.string.log_conn_done);
case "handshake":
return context.getString(R.string.log_handshake);
case "handshake_done":
return context.getString(R.string.log_handshake_done);
case "onehop_create":
return context.getString(R.string.log_onehop_create);
case "requesting_status":
return context.getString(R.string.log_requesting_status);
case "loading_status":
return context.getString(R.string.log_loading_status);
case "loading_keys":
return context.getString(R.string.log_loading_keys);
case "requesting_descriptors":
return context.getString(R.string.log_requesting_desccriptors);
case "loading_descriptors":
return context.getString(R.string.log_loading_descriptors);
case "enough_dirinfo":
return context.getString(R.string.log_enough_dirinfo);
case "ap_handshake_done":
return context.getString(R.string.log_ap_handshake_done);
case "circuit_create":
return context.getString(R.string.log_circuit_create);
case "done":
return context.getString(R.string.log_done);
default:
return key;
}
}
public static void setLastError(String error) {
getInstance().lastError = error;
instance.setChanged();
instance.notifyObservers();
}
public static void setProxyPort(int port) {
getInstance().port = port;
instance.setChanged();
instance.notifyObservers();
}
public static int getProxyPort() {
return getInstance().port;
}
@Nullable
public static String getLastTorLog() {
return getInstance().lastTorLog;
}
@Nullable
public static String getLastSnowflakeLog() {
return getInstance().lastSnowflakeLog;
}
public static Vector<String> getLastLogs() {
return getInstance().lastLogs;
}
public static String getStringForCurrentStatus(Context context) {
switch (getInstance().status) {
case ON:
return context.getString(R.string.tor_started);
case STARTING:
return context.getString(R.string.tor_starting);
case STOPPING:
return context.getString(R.string.tor_stopping);
case OFF:
case UNKOWN:
break;
}
return null;
}
}
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