Class jportmap

  • All Implemented Interfaces:
    OncRpcDispatchable
    Direct Known Subclasses:
    OncRpcEmbeddedPortmap.embeddedjportmap

    public class jportmap
    extends OncRpcServerStub
    implements OncRpcDispatchable
    The class jportmap implements a Java-based ONC/RPC port mapper, speaking the widely deployed protocol version 2.

    This class can be either used stand-alone (a static main is provided for this purpose) or as part of an application. In this case you should check first for another portmap already running before starting your own one.

    Version:
    $Revision: 1.2 $ $Date: 2003/08/14 11:26:50 $ $State: Exp $ $Locker: $
    Author:
    Harald Albrecht
    • Field Detail

      • locals

        public java.net.InetAddress[] locals
        List of IP addresses assigned to this host. Will be filled later by constructor.
      • servers

        public java.util.Vector servers
        The list of registrated servers.
      • PMAP_PORT

        public static final int PMAP_PORT
        Well-known port where the portmap process can be found on Internet hosts.
        See Also:
        Constant Field Values
      • PMAP_PROGRAM

        public static final int PMAP_PROGRAM
        Program number of the portmapper as defined in RFC 1832.
        See Also:
        Constant Field Values
      • PMAP_VERSION

        public static final int PMAP_VERSION
        Program version number of the portmapper as defined in RFC 1832.
        See Also:
        Constant Field Values
    • Constructor Detail

      • jportmap

        public jportmap()
                 throws OncRpcException,
                        java.io.IOException
        Create a new portmap instance, create the transport registration information and UDP and TCP-based transports, which will be bound later to port 111. The constructor does not start the dispatcher loop.
        Throws:
        OncRpcException
        java.io.IOException
    • Method Detail

      • getPort

        OncRpcGetPortResult getPort​(OncRpcServerIdent params)
        Lookup port for (program, version, protocol). If no suitable registration entry if found and an entry with another version, but the same program and version number is found, this is returned instead. This is compatible with the way Sun's portmap implementation works.
        Parameters:
        params - server identification (program, version, protocol) to look up. The port field is not used.
        Returns:
        port number where server listens for incomming ONC/RPC calls, or 0, if no server is registered for (program, protocol).
      • setPort

        XdrBoolean setPort​(OncRpcServerIdent params)
        Register a port number for a particular (program, version, protocol). Note that a caller can not register the same (program, version, protocol) for another port. In this case we return false. Thus, a caller first needs to deregister any old entries which it whishes to update. Always add new registration entries to the end of the list (vector).
        Parameters:
        params - (program, version, protocol, port) to register.
        Returns:
        true if registration succeeded.
      • unsetPort

        XdrBoolean unsetPort​(OncRpcServerIdent params)
        Deregister all port settings for a particular (program, version) for all transports (TCP, UDP, ...). While these are strange semantics, they are compatible with Sun's portmap implementation.
        Parameters:
        params - (program, version) to deregister. The protocol and port fields are not used.
        Returns:
        true if deregistration succeeded.
      • listServers

        OncRpcDumpResult listServers()
        Return list of registered ONC/RPC servers.
        Returns:
        list of ONC/RPC server descriptions (program, version, protocol, port).
      • isLocalAddress

        boolean isLocalAddress​(java.net.InetAddress addr)
        Checks whether the address given belongs to one of the local addresses of this host.
        Parameters:
        addr - IP address to check.
        Returns:
        true if address specified belongs to one of the local addresses of this host.
      • dispatchOncRpcCall

        public void dispatchOncRpcCall​(OncRpcCallInformation call,
                                       int program,
                                       int version,
                                       int procedure)
                                throws OncRpcException,
                                       java.io.IOException
        Dispatch incomming ONC/RPC calls to the individual handler functions. The CALLIT method is currently unimplemented.
        Specified by:
        dispatchOncRpcCall in interface OncRpcDispatchable
        Parameters:
        call - The ONC/RPC call, with references to the transport and XDR streams to use for retrieving parameters and sending replies.
        program - the portmap's program number, 100000
        version - the portmap's protocol version, 2
        procedure - the procedure to call.
        Throws:
        OncRpcException - if an ONC/RPC error occurs.
        java.io.IOException - if an I/O error occurs.
        See Also:
        OncRpcCallInformation
      • main

        public static void main​(java.lang.String[] args)
        Create an instance of an ONC/RPC portmapper and run it. As we have to bootstrap the ONC/RPC port information chain, we do not use the usual overloaded run() method without any parameters, but instead supply it the transports to handle. Registration and deregistration is not necessary and not possible.