/src/org/sipdroid/sipua/SipdroidEngine.java

/*

 * Copyright (C) 2009 The Sipdroid Open Source Project

 * Copyright (C) 2008 Hughes Systique Corporation, USA (http://www.hsc.com)

 * 

 * This file is part of Sipdroid (http://www.sipdroid.org)

 * 

 * Sipdroid 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 source code 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 source code; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */



package org.sipdroid.sipua;



import java.io.IOException;

import org.servalproject.R;

import org.servalproject.ServalBatPhoneApplication;

import org.sipdroid.media.Bluetooth;

import org.sipdroid.net.KeepAliveSip;

import org.sipdroid.sipua.ui.LoopAlarm;

import org.sipdroid.sipua.ui.Receiver;

import org.sipdroid.sipua.ui.Settings;

import org.zoolu.net.IpAddress;

import org.zoolu.sip.address.NameAddress;

import org.zoolu.sip.provider.SipProvider;

import org.zoolu.sip.provider.SipStack;



import android.content.Context;

import android.content.SharedPreferences.Editor;

import android.net.wifi.WifiManager;

import android.os.Build;

import android.os.PowerManager;

import android.os.SystemClock;

import android.preference.PreferenceManager;

import android.util.Log;



public class SipdroidEngine implements RegisterAgentListener {



	public static final int LINES = 1;

	public int pref=0;

	

	public static final int UNINITIALIZED = 0x0;

	public static final int INITIALIZED = 0x2;

	

	/** User Agent */

	public UserAgent[] uas;

	public UserAgent ua;



	/** Register Agent */

	private RegisterAgent[] ras;



	private KeepAliveSip[] kas;

	

	/** UserAgentProfile */

	public UserAgentProfile[] user_profiles;



	public SipProvider[] sip_providers;

	

	public static PowerManager.WakeLock[] wl,pwl;

	

	public boolean StartEngine() {

			PowerManager pm = (PowerManager) getUIContext().getSystemService(Context.POWER_SERVICE);

			if (wl == null) {

				wl = new PowerManager.WakeLock[LINES];

				pwl = new PowerManager.WakeLock[LINES];

			}

			uas = new UserAgent[LINES];

			ras = new RegisterAgent[LINES];

			kas = new KeepAliveSip[LINES];

			lastmsgs = new String[LINES];

			sip_providers = new SipProvider[LINES];

			user_profiles = new UserAgentProfile[LINES];

			

			user_profiles[0] = new UserAgentProfile();

			SipStack.init(null);

			int i = 0;

			for (UserAgentProfile user_profile : user_profiles) {

				if (user_profile==null) continue;

				if (wl[i] == null) {

					wl[i] = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Sipdroid.SipdroidEngine");

					pwl[i] = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "Sipdroid.SipdroidEngine");

				}

				

				try {

					SipStack.max_retransmission_timeout = 4000;

					SipStack.default_transport_protocols = new String[1];

					SipStack.default_transport_protocols[0] = "udp";

					

					String version = "Batphone/" + ServalBatPhoneApplication.version + "/" + Build.MODEL;

					SipStack.ua_info = version;

					SipStack.server_info = version;

					

					sip_providers[i] = new SipProvider(IpAddress.localIpAddress, 0);

					user_profile.contact_url = getContactURL(user_profile.username,sip_providers[i]);

					

					// added by mandrajg

					uas[i] = ua = new UserAgent(sip_providers[i], user_profile);

					ras[i] = new RegisterAgent(sip_providers[i], user_profile.from_url, // modified

							user_profile.contact_url, user_profile.username,

							user_profile.realm, user_profile.passwd, this, user_profile,

							user_profile.pub); // added by mandrajg

					kas[i] = new KeepAliveSip(sip_providers[i],100000);

				} catch (Exception E) {

					Log.v("SipDroid","Start Engine failure",E);

				}

				i++;

			}

			register();

			listen();



			return true;

	}



	private String getContactURL(String username,SipProvider sip_provider) {

		int i = username.indexOf("@");

		if (i != -1) {

			// if the username already contains a @ 

			//strip it and everthing following it

			username = username.substring(0, i);

		}



		return username + "@" + IpAddress.localIpAddress

		+ (sip_provider.getPort() != 0?":"+sip_provider.getPort():"")

		+ ";transport=" + sip_provider.getDefaultTransport();		

	}

	

	public Context getUIContext() {

		return Receiver.mContext;

	}

	

	public int getRemoteVideo() {

		return ua.remote_video_port;

	}

	

	public int getLocalVideo() {

		return ua.local_video_port;

	}

	

	public String getRemoteAddr() {

		return ua.remote_media_address;

	}

	

	public void expire() {

		Receiver.expire_time = 0;

		int i = 0;

		for (RegisterAgent ra : ras) {

			if (ra != null && ra.CurrentState == RegisterAgent.REGISTERED) {

				ra.CurrentState = RegisterAgent.UNREGISTERED;

			}

			i++;

		}

		register();

	}

	

	public void unregister(int i) {

			if (user_profiles[i] == null || user_profiles[i].username.equals("") ||

					user_profiles[i].realm.equals("")) return;



			RegisterAgent ra = ras[i];

			if (ra != null && ra.unregister()) {

				Receiver.alarm(0, LoopAlarm.class);

				wl[i].acquire();

			}

	}

	

	public void registerMore() {

		int i = 0;

		for (RegisterAgent ra : ras) {

			try {

				if (user_profiles[i] == null || user_profiles[i].username.equals("") ||

						user_profiles[i].realm.equals("")) {

					i++;

					continue;

				}

				user_profiles[i].contact_url = getContactURL(user_profiles[i].from_url,sip_providers[i]);

		

				if (ra != null && !ra.isRegistered() && true && ra.register()) {

					wl[i].acquire();

				}

			} catch (Exception ex) {

				Log.v("SipDroid","Failed to register",ex);

			}

			i++;

		}

	}

	

	public void register() {

		int i = 0;

		for (RegisterAgent ra : ras) {

			try {

				if (user_profiles[i] == null || user_profiles[i].username.equals("") ||

						user_profiles[i].realm.equals("")) {

					i++;

					continue;

				}

				user_profiles[i].contact_url = getContactURL(user_profiles[i].from_url,sip_providers[i]);

		

				if (ra != null && ra.register()) {

					wl[i].acquire();

				}

			} catch (Exception ex) {

				Log.v("SipDroid","Failed to register",ex);

			}

			i++;

		}

	}

	

	public void registerUdp() {

		int i = 0;

		for (RegisterAgent ra : ras) {

			try {

				if (user_profiles[i] == null || user_profiles[i].username.equals("") ||

						user_profiles[i].realm.equals("") ||

						sip_providers[i] == null ||

						sip_providers[i].getDefaultTransport() == null ||

						sip_providers[i].getDefaultTransport().equals("tcp")) {

					i++;

					continue;

				}

				user_profiles[i].contact_url = getContactURL(user_profiles[i].from_url,sip_providers[i]);

		

				if (ra != null && ra.register()) {

					wl[i].acquire();

				}

			} catch (Exception ex) {

				Log.v("SipDroid","Failed to register udp",ex);

			}

			i++;

		}

	}



	public void halt() { // modified

		if (ras==null) return;

		

		long time = SystemClock.elapsedRealtime();

		

		int i = 0;

		for (RegisterAgent ra : ras) {

			unregister(i);

			while (ra != null && ra.CurrentState != RegisterAgent.UNREGISTERED && SystemClock.elapsedRealtime()-time < 2000)

				try {

					Thread.sleep(100);

				} catch (InterruptedException e1) {

				}

			if (wl[i].isHeld()) {

				wl[i].release();

				if (pwl[i] != null && pwl[i].isHeld()) pwl[i].release();

			}

			if (kas[i] != null) {

				Receiver.alarm(0, LoopAlarm.class);

				kas[i].halt();

			}

			if (ra != null)

				ra.halt();

			if (uas[i] != null)

				uas[i].hangup();

			if (sip_providers[i] != null)

				sip_providers[i].halt();

			i++;

		}

	}



	static SipdroidEngine engine=null;

	

	public static boolean isRegistered()

	{

		if (engine==null) 

			return false;

		

		for (RegisterAgent ra : engine.ras)

			if (ra != null && ra.isRegistered())

				return true;

		

		return false;

	}

	

	public static boolean hasAudio(){

		return (engine != null &&

				engine.ua != null &&

				engine.ua.audio_app != null);

	}

	public static synchronized SipdroidEngine getEngine() {

		if (engine == null) {

			engine = new SipdroidEngine();

			if (Integer.parseInt(Build.VERSION.SDK) >= 8)

				Bluetooth.init();

		}

		

		return engine;

	}

	

	boolean isRegistered(int i)

	{

		if (ras[i] == null)

		{

			return false;

		}

		return ras[i].isRegistered();

	}

	

	public void onUaRegistrationSuccess(RegisterAgent reg_ra, NameAddress target,

			NameAddress contact, String result) {

    	int i = 0;

    	for (RegisterAgent ra : ras) {

    		if (ra == reg_ra) break;

    		i++;

    	}

		if (isRegistered(i)) {

			if (Receiver.on_wlan)

				Receiver.alarm(60, LoopAlarm.class);

			reg_ra.subattempts = 0;

			reg_ra.startMWI();

		}

		if (wl[i].isHeld()) {

			wl[i].release();

			if (pwl[i] != null && pwl[i].isHeld()) pwl[i].release();

		}

	}



	String[] lastmsgs;

	

    public void onMWIUpdate(RegisterAgent mwi_ra, boolean voicemail, int number, String vmacc) {

    	int i = 0;

    	for (RegisterAgent ra : ras) {

    		if (ra == mwi_ra) break;

    		i++;

    	}

		if (voicemail) {

			String msgs = getUIContext().getString(R.string.voicemail);

			if (number != 0) {

				msgs = msgs + ": " + number;

			}

			Receiver.MWI_account = vmacc;

			if (lastmsgs[i] == null || !msgs.equals(lastmsgs[i])) {

				Receiver.onText(Receiver.MWI_NOTIFICATION, msgs,android.R.drawable.stat_notify_voicemail,0);

				lastmsgs[i] = msgs;

			}

		} else {

			Receiver.onText(Receiver.MWI_NOTIFICATION, null, 0,0);

			lastmsgs[i] = null;

		}

	}



	static long lasthalt,lastpwl;

	

	/** When a UA failed on (un)registering. */

	public void onUaRegistrationFailure(RegisterAgent reg_ra, NameAddress target,

			NameAddress contact, String result) {

		boolean retry = false;

    	int i = 0;

    	for (RegisterAgent ra : ras) {

    		if (ra == reg_ra) break;

    		i++;

    	}

    	if (isRegistered(i)) {

    		reg_ra.CurrentState = RegisterAgent.UNREGISTERED;

    	} else {

    		retry = true;

    	}

    	if (retry && SystemClock.uptimeMillis() > lastpwl + 45000 && pwl[i] != null && !pwl[i].isHeld() && Receiver.on_wlan) {

			lastpwl = SystemClock.uptimeMillis();

			if (wl[i].isHeld())

				wl[i].release();

			pwl[i].acquire();

			register();

			if (!wl[i].isHeld() && pwl[i].isHeld()) pwl[i].release();

		} else if (wl[i].isHeld()) {

			wl[i].release();

			if (pwl[i] != null && pwl[i].isHeld()) pwl[i].release();

		}

		if (SystemClock.uptimeMillis() > lasthalt + 45000) {

			lasthalt = SystemClock.uptimeMillis();

			sip_providers[i].haltConnections();

		}

		reg_ra.stopMWI();

    	WifiManager wm = (WifiManager) Receiver.mContext.getSystemService(Context.WIFI_SERVICE);

    	wm.startScan();

	}

	

	/** Receives incoming calls (auto accept) */

	public void listen() 

	{

		for (UserAgent ua : uas) {

			if (ua != null) {

				ua.printLog("UAS: WAITING FOR INCOMING CALL");

				

				if (!ua.user_profile.audio && !ua.user_profile.video)

				{

					ua.printLog("ONLY SIGNALING, NO MEDIA");

				}

				

				ua.listen();

			}

		}

	}

	

	public void info(char c, int duration) {

		ua.info(c, duration);

	}

	

	/** Makes a new call */

	public boolean call(String target_url) {

		return ua.call(target_url);

	}



	public void answercall() 

	{

		Receiver.stopRingtone();

		ua.accept();

	}



	public void rejectcall() {

		ua.printLog("UA: HANGUP");

		ua.hangup();

	}



	public void togglehold() {

		ua.reInvite(null, 0);

	}



	public void transfer(String number) {

		ua.callTransfer(number, 0);

	}

	

	public void togglemute() {

		if (ua.muteMediaApplication())

			Receiver.onText(Receiver.CALL_NOTIFICATION, getUIContext().getString(R.string.menu_mute), android.R.drawable.stat_notify_call_mute,Receiver.ccCall.base);

		else

			Receiver.progress();

	}

	

	public void togglebluetooth() {

		ua.bluetoothMediaApplication();

		Receiver.progress();

	}

	

	public int speaker(int mode) {

		int ret = ua.speakerMediaApplication(mode);

		Receiver.progress();

		return ret;

	}

	

	public void keepAlive() {

		int i = 0;

		for (KeepAliveSip ka : kas) {

			if (ka != null && Receiver.on_wlan && isRegistered(i))

				try {

					ka.sendToken();

					Receiver.alarm(60, LoopAlarm.class);

				} catch (IOException e) {

					Log.v("SipDroid","keep alive failed",e);

				}

			i++;

		}

	}



	public static boolean on(Context context) {

		return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(Settings.PREF_ON, Settings.DEFAULT_ON);

	}



	public static void on(Context context,boolean on) {

		Editor edit = PreferenceManager.getDefaultSharedPreferences(context).edit();

		edit.putBoolean(Settings.PREF_ON, on);

		edit.commit();

	}

}