Initial

java/JCHAT/IOManager.java

@@ -0,0 +1,203 @@
+import java.net.*;
+import java.io.*;
+
+public class IOManager
+{
+	public static final int OkResult=220;
+	public static final int ErrorResult=500;
+	private final int MaxNetworkPacket=1024;
+	private final int InvalidPort=-1;
+	private SocketControl mTCPSocket=null;
+  private boolean mIsLoggedIn=false;
+	private StringArray mAckResponseStrings;
+
+  public IOManager()
+  {
+    mAckResponseStrings=new StringArray();
+    mAckResponseStrings.insert("220");
+  }
+	public void shutdown()
+	{
+	  if(!mTCPSocket.isConnected())return;
+	  if(isLoggedIn())quit();
+	  try{mTCPSocket.closeSocket();}
+	  catch(IOException exception){return;}
+	}
+	public boolean isConnected()
+	{
+	  if(mTCPSocket==null||!mTCPSocket.isConnected())return false;
+	  return true;
+	}
+	private void isLoggedIn(boolean isLoggedIn)
+	{
+	  mIsLoggedIn=isLoggedIn;
+	}
+	public boolean isLoggedIn()
+	{
+	  return mIsLoggedIn;
+	}
+  public boolean connect(String strHost,int port)
+  {  
+	  int bytesRead;
+	  byte streamBytes[];
+	  int clientPort;
+	  String strLine=new String();
+
+		if(isConnected())return false;
+		streamBytes=new byte[MaxNetworkPacket];
+		InetAddress inetAddress=null;
+		SocketControl socket=null;
+		if(0!=strHost.length())
+		{
+		  try{inetAddress=InetAddress.getByName(strHost);}
+		  catch(UnknownHostException exception){return false;}
+		  try{socket=new SocketControl(inetAddress,port);}
+		  catch(IOException exception){return false;}
+		  catch(SecurityException exception){return false;}
+		}
+		else
+		{
+		  try{socket=new SocketControl("",port);}
+		  catch(IOException exception){return false;}
+		  catch(SecurityException exception){return false;}
+		}
+		if(!socket.isConnected())return false;
+    strLine=socket.readLine();
+		if(0==strLine.length())return false;
+		clientPort=getPort(strLine);
+		if(InvalidPort==clientPort)return false;
+		socket.writeLine("OK");
+		try{socket.closeSocket();}
+		catch(IOException exception){return false;}
+		if(0!=strHost.length())
+		{
+		  try{inetAddress=InetAddress.getByName(strHost);}
+		  catch(UnknownHostException exception){return false;}
+		  try{mTCPSocket=new SocketControl(inetAddress,clientPort);}
+		  catch(IOException exception){return false;}
+		}
+		else
+		{
+		  try{mTCPSocket=new SocketControl("",clientPort);}
+		  catch(IOException exception){return false;}
+		}
+    strLine=mTCPSocket.readLine();
+		return isConnected();
+	}
+	public boolean advise(String strAddress,int port)
+	{
+	  String strRequest=null;
+	  if(!isConnected())return false;
+	  strRequest=new String("ADVISE(")+new String(strAddress)+new String(",")+String.valueOf(port)+new String(")");
+	  mTCPSocket.writeLine(strRequest);
+	  strRequest=mTCPSocket.readLine();
+	  return true;
+	}
+  private String readLine(InputStream inputStream)
+	{
+	  byte streamByte[];
+	  String strLine=new String();
+
+    strLine=new String();
+    while(true)
+	  {
+		  streamByte=new byte[1];
+		  try{inputStream.read(streamByte);}
+		  catch(IOException exception){break;}
+		  if(13==streamByte[0])continue;
+		  else if(10==streamByte[0])break;
+		  strLine+=new String(streamByte);
+	  }
+	  return strLine;
+	}
+	private boolean writeLine(String strLine,OutputStream outputStream)
+	{
+	  if(0==strLine.length())return false;
+	  strLine+=new String("\r\n");
+	  byte streamData[]=strLine.getBytes();
+	  try{outputStream.write(streamData);}
+	  catch(IOException exception){return false;}
+	  return true;
+	}
+	private int getPort(String strLine)
+	{
+	  String strPort;
+	  int strIndex;
+	  int port;
+    
+    strIndex=strLine.length()-1;
+		port=InvalidPort;
+		strPort=new String();
+		if(strIndex<0)return -1;
+		while(true)
+		{
+		  if(strIndex<0)break;
+			if(' '==strLine.charAt(strIndex))break;
+		  strIndex--;
+		}
+		strIndex++;
+		if(strIndex<0)return port;
+		strPort=strLine.substring(strIndex);
+		return Integer.parseInt(strPort);
+	}
+	private boolean isInResponse(String responseString,StringArray responseStrings)
+	{
+	  if(0==responseString.length())return false;
+	  for(int index=0;index<responseStrings.size();index++)
+	  {
+	    if(responseString.equals(responseStrings.getAt(index)))return true;
+	  }
+	  return false;
+	}
+	public boolean user(String strUserName,StringArray receiveStrings)
+	{
+	  receiveStrings.clear();
+	  if(!isConnected())return false;
+	  String strLine=new String("USER(")+strUserName+new String(")");
+	  mTCPSocket.writeLine(strLine);
+	  if(!mTCPSocket.receive(receiveStrings,mAckResponseStrings))return false;
+	  isLoggedIn(true);
+	  return isLoggedIn();
+	}
+	public boolean who(StringArray userList)
+	{
+	  StringArray responseLines=new StringArray();
+	  userList.clear();
+	  if(!isConnected())return false;
+	  String strLine=new String("WHO");
+	  mTCPSocket.writeLine(strLine);
+	  if(!mTCPSocket.receive(responseLines,mAckResponseStrings))return false;
+	  for(int index=1;index<responseLines.size()-1;index++)
+	    userList.insert(responseLines.getAt(index).substring(4,responseLines.getAt(index).length()));
+	  return true;
+	}
+	public boolean quit()
+	{
+	  if(!isConnected()||!isLoggedIn())return false;
+	  String strLine=new String("QUIT");
+	  mTCPSocket.writeLine(strLine);
+	  strLine=mTCPSocket.readLine();
+	  return true;
+	}
+	public boolean talk(String strLine)
+	{
+	  if(!isConnected()||0==strLine.length())return false;
+	  String strString=new String("TALK(")+strLine+new String(")");
+	  mTCPSocket.writeLine(strString);
+	  strLine=mTCPSocket.readLine();
+	  return true;
+	}
+	public String version()
+	{
+	  String strVersion=new String();
+	  String strLine=new String();
+	  
+	  if(!isConnected())return strVersion;
+	  mTCPSocket.writeLine("VERSION");
+	  strLine=mTCPSocket.readLine();
+	  if(mTCPSocket.OkResult!=mTCPSocket.getResultCode(strLine))return strVersion;
+	  strVersion=mTCPSocket.getResult(strLine);
+	  return strVersion;
+	}
+		
+};