package com.planet_ink.coffee_mud.WebMacros;
import com.planet_ink.coffee_web.http.HTTPException;
import com.planet_ink.coffee_web.http.HTTPHeader;
import com.planet_ink.coffee_web.http.HTTPMethod;
import com.planet_ink.coffee_web.http.HTTPStatus;
import com.planet_ink.coffee_web.http.MultiPartData;
import com.planet_ink.coffee_web.interfaces.*;
import com.planet_ink.coffee_web.util.CWDataBuffers;
import com.planet_ink.coffee_mud.core.interfaces.*;
import com.planet_ink.coffee_mud.core.*;
import com.planet_ink.coffee_mud.core.CoffeeIOPipe.CoffeeIOPipes;
import com.planet_ink.coffee_mud.core.CoffeeIOPipe.CoffeePipeSocket;
import com.planet_ink.coffee_mud.core.collections.*;
import com.planet_ink.coffee_mud.Abilities.interfaces.*;
import com.planet_ink.coffee_mud.Areas.interfaces.*;
import com.planet_ink.coffee_mud.Behaviors.interfaces.*;
import com.planet_ink.coffee_mud.CharClasses.interfaces.*;
import com.planet_ink.coffee_mud.Libraries.interfaces.*;
import com.planet_ink.coffee_mud.Libraries.interfaces.DatabaseEngine.PlayerData;
import com.planet_ink.coffee_mud.Common.interfaces.*;
import com.planet_ink.coffee_mud.Exits.interfaces.*;
import com.planet_ink.coffee_mud.Items.interfaces.*;
import com.planet_ink.coffee_mud.Locales.interfaces.*;
import com.planet_ink.coffee_mud.MOBS.interfaces.*;
import com.planet_ink.coffee_mud.Races.interfaces.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.UnsupportedEncodingException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URLDecoder;
import java.nio.ByteBuffer;
import java.nio.channels.Pipe;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.util.*;
import com.planet_ink.coffee_mud.core.exceptions.HTTPServerException;
import com.planet_ink.siplet.applet.*;
/*
Copyright 2011-2019 Bo Zimmerman
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
public class SipletInterface extends StdWebMacro
{
@Override
public String name()
{
return "SipletInterface";
}
@Override
public boolean isAWebPath()
{
return true;
}
public static final Object sipletConnectSync = new Object();
public static volatile boolean initialized = false;
public static final Map<String, SipletSession> siplets = new SHashtable<String, SipletSession>();
private class SipletSession
{
public long lastTouched = System.currentTimeMillis();
public Siplet siplet = null;
public String response = "";
public String sipToken = "";
public HTTPIOHandler parentIOHandler= null;
public SipletSession(final Siplet sip, final String token)
{
siplet = sip;
sipToken = token;
}
}
protected void initialize()
{
initialized = true;
CMLib.threads().startTickDown(new Tickable()
{
private int tickStatus = Tickable.STATUS_NOT;
@Override
public int getTickStatus()
{
return tickStatus;
}
@Override
public String name()
{
return "SipletInterface";
}
@Override
public boolean tick(final Tickable ticking, final int tickID)
{
tickStatus = Tickable.STATUS_ALIVE;
synchronized (siplets)
{
for (final String key : siplets.keySet())
{
final SipletSession p = siplets.get(key);
if (p == null)
continue;
if(p.parentIOHandler != null)
{
if(!p.siplet.isConnectedToURL())
{
p.parentIOHandler.closeAndWait();
siplets.remove(key);
}
else
if(p.siplet.hasWaitingData())
p.parentIOHandler.scheduleProcessing();
}
}
}
tickStatus = Tickable.STATUS_NOT;
return true;
}
@Override
public String ID()
{
return "SipletInterface";
}
@Override
public CMObject copyOf()
{
return this;
}
@Override
public void initializeClass()
{
}
@Override
public CMObject newInstance()
{
return this;
}
@Override
public int compareTo(final CMObject o)
{
return o == this ? 0 : 1;
}
}, Tickable.TICKID_MISCELLANEOUS, 250, 1);
}
public String processRequest(final HTTPRequest httpReq, final SipletProtocolHander handler)
{
if(httpReq.isUrlParameter("CONNECT"))
{
final String url=httpReq.getUrlParameter("URL");
final int port=CMath.s_int(httpReq.getUrlParameter("PORT"));
String hex="";
final Siplet sip = new Siplet();
SipletSession session=null;
if(url!=null)
{
sip.init();
synchronized(sipletConnectSync)
{
for(final MudHost h : CMLib.hosts())
{
if(h.getPort()==port)
{
try
{
final CoffeeIOPipes pipes = new CoffeeIOPipes(65536);
final CoffeePipeSocket lsock=new CoffeePipeSocket(httpReq.getClientAddress(),pipes.getLeftPipe(),pipes.getRightPipe());
final CoffeePipeSocket rsock=new CoffeePipeSocket(httpReq.getClientAddress(),pipes.getRightPipe(),pipes.getLeftPipe());
if(sip.connectToURL(url, port, lsock))
{
sip.setFeatures(true, Siplet.MSPStatus.External, false);
h.acceptConnection(rsock);
int tokenNum=0;
int tries=1000;
while((tokenNum==0)&&((--tries)>0))
{
tokenNum = new Random().nextInt();
if(tokenNum<0)
tokenNum = tokenNum * -1;
hex=Integer.toHexString(tokenNum);
if(httpReq.isUrlParameter(hex))
tokenNum=0;
}
session=new SipletSession(sip, hex);
final SipletSession s=session;
final Runnable writeBack = new Runnable()
{
final SipletSession sess = s;
@Override
public void run()
{
final HTTPIOHandler ioHandler = sess.parentIOHandler;
if(ioHandler != null)
ioHandler.scheduleProcessing();
}
};
rsock.getOutputStream().setWriteCallback(writeBack);
}
}
catch(final IOException e)
{
session=null;
}
}
}
}
if(session != null)
{
synchronized(siplets)
{
siplets.put(hex, session);
if(handler != null)
handler.session=session;
}
}
}
return Boolean.toString(session != null)+';'+hex+';'+sip.info()+hex+';';
}
else
if(httpReq.isUrlParameter("DISCONNECT"))
{
final String token=httpReq.getUrlParameter("TOKEN");
boolean success = false;
if(token != null)
{
final SipletSession p = siplets.get(token);
if(p!=null)
{
siplets.remove(token);
p.siplet.disconnectFromURL();
success=true;
}
}
return Boolean.toString(success)+';';
}
else
if(httpReq.isUrlParameter("SENDDATA"))
{
final String token=httpReq.getUrlParameter("TOKEN");
boolean success = false;
if(token != null)
{
final SipletSession p = siplets.get(token);
if(p!=null)
{
String data=httpReq.getUrlParameter("DATA");
if(data!=null)
{
if(!p.siplet.isConnectedToURL())
Log.debugOut("SipletInterface Send Will Fail due to already being disconnected.");
p.lastTouched=System.currentTimeMillis();
p.siplet.sendData(data);
if(p.siplet.isConnectedToURL())
{
CMLib.s_sleep(10); // why?
if(p.siplet.isConnectedToURL())
{
p.lastTouched=System.currentTimeMillis();
p.siplet.readURLData();
data = p.siplet.getURLData();
final String jscript = p.siplet.getJScriptCommands();
success=p.siplet.isConnectedToURL();
p.response=Boolean.toString(success)+';'+data+token+';'+jscript+token+';';
return p.response;
}
}
}
}
}
return Boolean.toString(success)+';';
}
else
if(httpReq.isUrlParameter("POLL"))
{
final String token=httpReq.getUrlParameter("TOKEN");
if(token != null)
{
final SipletSession p = siplets.get(token);
if(p!=null)
{
if(p.siplet.isConnectedToURL())
{
if(httpReq.isUrlParameter("LAST"))
return p.response;
else
{
final boolean noTouch=httpReq.isUrlParameter("NOTOUCH");
if(!noTouch)
p.lastTouched=System.currentTimeMillis();
p.siplet.readURLData();
final String data = p.siplet.getURLData();
final String jscript = p.siplet.getJScriptCommands();
final boolean success=p.siplet.isConnectedToURL();
if((!noTouch)||(data.length()>0)||(jscript.length()>0)||(!success))
p.response=Boolean.toString(success)+';'+data+token+';'+jscript+token+';';
else
p.response="";
return p.response;
}
}
}
}
return "false;"+token+";"+token+";";
}
return "false;";
}
@Override
public String runMacro(final HTTPRequest httpReq, final String parm, final HTTPResponse httpResp) throws HTTPServerException
{
if(!CMProps.getBoolVar(CMProps.Bool.MUDSTARTED))
return "false;";
if(!initialized)
{
initialize();
}
if((httpReq.getHeader("upgrade")!=null)
&&("websocket".equalsIgnoreCase(httpReq.getHeader("upgrade")))
&&(httpReq.getHeader("connection")!=null)
&&(httpReq.getHeader("connection").toLowerCase().indexOf("upgrade")>=0))
{
final HTTPException exception = new HTTPException(HTTPStatus.S101_SWITCHING_PROTOCOLS);
try
{
final String key = httpReq.getHeader("sec-websocket-key");
final String tokenStr = key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
final MessageDigest cript = MessageDigest.getInstance("SHA-1");
cript.reset();
cript.update(tokenStr.getBytes("utf8"));
final String token = B64Encoder.B64encodeBytes(cript.digest());
httpResp.setStatusCode(101);
exception.getErrorHeaders().put(HTTPHeader.Common.CONNECTION, HTTPHeader.Common.UPGRADE.toString());
exception.getErrorHeaders().put(HTTPHeader.Common.UPGRADE, httpReq.getHeader("upgrade"));
exception.getErrorHeaders().put(HTTPHeader.Common.SEC_WEBSOCKET_ACCEPT, token);
if(httpReq.getHeader("origin")!=null)
exception.getErrorHeaders().put(HTTPHeader.Common.ORIGIN, httpReq.getHeader("origin"));
final StringBuilder locationStr;
if(httpReq.getFullHost().startsWith("https:"))
locationStr = new StringBuilder("wss://"+httpReq.getHost());
else
locationStr = new StringBuilder("ws://"+httpReq.getHost());
if(httpReq.getClientPort() != 80)
locationStr.append(":").append(httpReq.getClientPort());
locationStr.append(httpReq.getUrlPath());
exception.getErrorHeaders().put(HTTPHeader.Common.SEC_WEBSOCKET_LOCATION, locationStr.toString());
final SipletProtocolHander newHandler = new SipletProtocolHander();
exception.setNewProtocolHandler(newHandler);
httpReq.getRequestObjects().put("___SIPLETHANDLER", newHandler);
}
catch (final Exception e)
{
Log.errOut(e);
throw new HTTPServerException(e.getMessage());
}
throw new HTTPServerException(exception);
}
return processRequest(httpReq, (SipletProtocolHander)httpReq.getRequestObjects().get("___SIPLETHANDLER"));
}
public static enum WSState
{
S0,P1,PX,M1,M2,M3,M4,PAYLOAD
}
private class SipletProtocolHander implements ProtocolHandler
{
private volatile WSState state = WSState.S0;
private volatile int subState = 0;
private volatile long dataLen = 0;
private volatile byte opCode = 0;
private final byte[] mask = new byte[4];
private volatile boolean finished = false;
private volatile int maskPos = 0;
private SipletSession session = null;
private final ByteArrayOutputStream payload = new ByteArrayOutputStream();
private final ByteArrayOutputStream msg = new ByteArrayOutputStream();
public SipletProtocolHander()
{
}
private byte[] encodeTextResponse(final String resp)
{
return encodeResponse(resp.getBytes(Charset.forName("UTF8")),1);
}
private byte[] encodeResponse(final byte[] resp, final int type)
{
final ByteArrayOutputStream bout=new ByteArrayOutputStream();
bout.write(0x80 + (byte)type); // output
if(resp.length < 126)
{
bout.write(resp.length & 0x7f);
}
else
if(resp.length < 65535)
{
bout.write(126 & 0x7f);
final int byte1=resp.length / 256;
final int byte2 = resp.length - (byte1 * 256);
bout.write(byte1);
bout.write(byte2);
}
else
{
bout.write(127 & 0x7f);
long len = resp.length;
final int byte1=(int)(len / 16777216);
len = len - (byte1 * 16777216);
final int byte2=(int)(len / 65536);
len = len - (byte2 * 65536);
final int byte3=(int)(len / 256);
len = len - (byte3 * 256);
bout.write(0 & 0xff);
bout.write(0 & 0xff);
bout.write(0 & 0xff);
bout.write(0 & 0xff);
bout.write(byte1 & 0xff);
bout.write(byte2 & 0xff);
bout.write(byte3 & 0xff);
bout.write((byte)(len & 0xff));
}
try
{
bout.write(resp);
}
catch (final IOException e)
{
e.printStackTrace();
}
return bout.toByteArray();
}
/**
* When url-encoded data is received, this method is called to parse out
* the key-pairs and put their decoded keys and values into the urlParameters
* list.
* @param httpReq the request to populate with stuff
* @param parts the raw undecoded urlencoded line of data
* @throws HTTPException
*/
private void parseUrlEncodedKeypairs(final HTTPRequest httpReq, final String parts) throws HTTPException
{
try
{
httpReq.getUrlParameters().clear();
final String[] urlParmArray = parts.split("&");
final Map<String,String> urlParmsFound=new HashMap<String,String>();
for(final String urlParm : urlParmArray)
{
final int equalDex = urlParm.indexOf('=');
final String key;
final String value;
if(equalDex < 0)
{
key=URLDecoder.decode(urlParm,"UTF-8");
value="";
}
else
{
key=URLDecoder.decode(urlParm.substring(0,equalDex),"UTF-8");
value=URLDecoder.decode(urlParm.substring(equalDex+1),"UTF-8");
}
urlParmsFound.put(key, value);
}
for(final String key : urlParmsFound.keySet())
httpReq.addFakeUrlParameter(key,urlParmsFound.get(key));
}
catch(final UnsupportedEncodingException ex)
{
throw HTTPException.standardException(HTTPStatus.S400_BAD_REQUEST);
}
}
private void reset(final ByteBuffer buffer)
{
msg.reset();
payload.reset();
state = WSState.S0;
subState = 0;
dataLen = 0;
opCode = 0;
finished = false;
maskPos = 0;
}
private DataBuffers getOutput(final DataBuffers outBuffer)
{
if(outBuffer == null)
return new CWDataBuffers();
return outBuffer;
}
private DataBuffers done(final HTTPRequest request, final ByteBuffer buffer, DataBuffers outBuffer) throws HTTPException
{
switch(opCode)
{
case 1: // text data
{
final String cmd = new String(payload.toByteArray());
parseUrlEncodedKeypairs(request,cmd);
final String resp = processRequest(request, this);
//if(resp.length()>10)
// Log.debugOut("SipletInterface","Got: "+cmd+", response: "+resp.substring(0,10)+": "+resp.length());
//else
// Log.debugOut("SipletInterface","Got: "+cmd+", response: "+resp+": "+resp.length());
if(resp.length()>0)
{
final byte[] encodedResp = this.encodeTextResponse(resp);
reset(buffer);
outBuffer = getOutput(outBuffer);
outBuffer.add(encodedResp,System.currentTimeMillis(),true);
}
break;
}
case 9: // ping
{
final byte[] newPayload = msg.toByteArray();
newPayload[0] = (byte)((newPayload[0] & 0xf0) + 10); // 10=pong
reset(buffer);
outBuffer = getOutput(outBuffer);
outBuffer.add(newPayload,System.currentTimeMillis(),true);
break;
}
case 10: // pong -- ignore
break;
case 11: // close
break;
default:
break;
}
return outBuffer;
}
@Override
public DataBuffers processBuffer(final HTTPIOHandler handler, final HTTPRequest request, final ByteBuffer buffer) throws HTTPException
{
DataBuffers outBuffers = null;
if((handler != null)
&&(session!=null)
&&(session.parentIOHandler!=handler))
session.parentIOHandler = handler;
if((buffer.position()==0)
&&(payload.size()==0)
&&(session!=null)
&&(session.siplet.hasWaitingData()))
{
try
{
this.reset(buffer);
opCode=1;
payload.write(("POLL&NOTOUCH&TOKEN="+session.sipToken).getBytes());
}
catch (final IOException e)
{
}
outBuffers = done(request,buffer,outBuffers);
this.reset(buffer);
}
buffer.flip(); // turn the writeable buffer into a "readable" one
while(buffer.position() < buffer.limit())
{
byte b=buffer.get(); // keep this here .. it ensures the while loop ends
msg.write(b);
switch(state)
{
case M1:
mask[0]=b;
state=WSState.M2;
break;
case M2:
mask[1]=b;
state=WSState.M3;
break;
case M3:
mask[2]=b;
state=WSState.M4;
break;
case M4:
maskPos=0;
mask[3]=b;
if(dataLen > 0)
state=WSState.PAYLOAD;
else
{
if(finished)
outBuffers = done(request,buffer,outBuffers);
state=WSState.S0;
}
break;
case P1:
{
if((b & 0x80) == 0)
{
throw HTTPException.standardException(HTTPStatus.S403_FORBIDDEN);
}
this.dataLen = (b & 0x7F);
if(this.dataLen < 126 )
state = WSState.M1;
else
if(this.dataLen == 126)
{
this.dataLen = 0;
this.subState = 2;
state = WSState.PX;
}
else
{
this.dataLen = 0;
this.subState = 4;
state = WSState.PX;
}
break;
}
case PAYLOAD:
b = (byte)((b & 0xff) ^ mask[maskPos]);
maskPos = (maskPos+1) % 4;
payload.write(b);
if(--dataLen <= 0)
{
if(finished)
outBuffers = done(request,buffer,outBuffers);
state=WSState.S0;
}
break;
case PX:
if(subState > 0)
{
subState--;
dataLen = (dataLen << 8) + (b & 0xff);
if(subState == 0)
state = WSState.M1;
}
else
state = WSState.M1;
break;
case S0:
{
opCode = (byte)(b & 0x0f);
finished = (b & 0x80) == 0x80;
state = WSState.P1;
break;
}
}
//System.out.print(Integer.toHexString(buffer.get() & 0xff)+" ");
}
buffer.clear();
return outBuffers;
}
@Override
public boolean isTimedOut()
{
final SipletSession session = this.session;
if(session != null)
{
final long idle = System.currentTimeMillis() - session.lastTouched;
if ((idle > (30 * 1000)))
{
this.closeAndWait();
return true;
}
}
return false;
}
@Override
public void closeAndWait()
{
if(session != null)
{
session.siplet.disconnectFromURL();
String removeKey = null;
synchronized (siplets)
{
for(final String keys : siplets.keySet())
{
final SipletSession s = siplets.get(keys);
if(s==session)
{
removeKey = keys;
break;
}
}
if(removeKey != null)
siplets.remove(removeKey);
}
}
}
}
}
