import java.io.*;

class TinyHttpdSecurityManager extends SecurityManager { 
	public void checkAccess(Thread g) { };
	public void checkListen(int port) { };
	public void checkLink(String lib) { };
	public void checkPropertyAccess(String key) { };
	public void checkAccept(String host, int port) { };
	public void checkWrite(FileDescriptor fd) { };
	public void checkRead(FileDescriptor fd  ) {  };

	public void checkRead( String s ) { 
		if ( new File(s).isAbsolute() || (s.indexOf("..") != -1) )
			throw new SecurityException( "Access to file : "+ s + " denied." );
	}
}