Examples with ObjID java.rmi.server.ObjID used on opensource projects

Example 1 with ObjID

use of java.rmi.server.ObjID in project jdk8u_jdk by JetBrains.

the class LiveRef method read.

public static LiveRef read(ObjectInput in, boolean useNewFormat) throws IOException, ClassNotFoundException {
    Endpoint ep;
    ObjID id;
    // (need to choose whether or not to read old JDK1.1 endpoint format)
    if (useNewFormat) {
        ep = TCPEndpoint.read(in);
    } else {
        ep = TCPEndpoint.readHostPortFormat(in);
    }
    id = ObjID.read(in);
    boolean isResultStream = in.readBoolean();
    LiveRef ref = new LiveRef(id, ep, false);
    if (in instanceof ConnectionInputStream) {
        ConnectionInputStream stream = (ConnectionInputStream) in;
        // save ref to send "dirty" call after all args/returns
        // have been unmarshaled.
        stream.saveRef(ref);
        if (isResultStream) {
            // set flag in stream indicating that remote objects were
            // unmarshaled.  A DGC ack should be sent by the transport.
            stream.setAckNeeded();
        }
    } else {
        DGCClient.registerRefs(ep, Arrays.asList(new LiveRef[] { ref }));
    }
    return ref;
}

Example 2 with ObjID

use of java.rmi.server.ObjID in project jdk8u_jdk by JetBrains.

the class LocateRegistry method getRegistry.

/**
     * Returns a locally created remote reference to the remote object
     * <code>Registry</code> on the specified <code>host</code> and
     * <code>port</code>.  Communication with this remote registry will
     * use the supplied <code>RMIClientSocketFactory</code> <code>csf</code>
     * to create <code>Socket</code> connections to the registry on the
     * remote <code>host</code> and <code>port</code>.
     *
     * @param host host for the remote registry
     * @param port port on which the registry accepts requests
     * @param csf  client-side <code>Socket</code> factory used to
     *      make connections to the registry.  If <code>csf</code>
     *      is null, then the default client-side <code>Socket</code>
     *      factory will be used in the registry stub.
     * @return reference (a stub) to the remote registry
     * @exception RemoteException if the reference could not be created
     * @since 1.2
     */
public static Registry getRegistry(String host, int port, RMIClientSocketFactory csf) throws RemoteException {
    Registry registry = null;
    if (port <= 0)
        port = Registry.REGISTRY_PORT;
    if (host == null || host.length() == 0) {
        // that the RegistryImpl's checkAccess will not fail.
        try {
            host = java.net.InetAddress.getLocalHost().getHostAddress();
        } catch (Exception e) {
            // If that failed, at least try "" (localhost) anyway...
            host = "";
        }
    }
    /*
         * Create a proxy for the registry with the given host, port, and
         * client socket factory.  If the supplied client socket factory is
         * null, then the ref type is a UnicastRef, otherwise the ref type
         * is a UnicastRef2.  If the property
         * java.rmi.server.ignoreStubClasses is true, then the proxy
         * returned is an instance of a dynamic proxy class that implements
         * the Registry interface; otherwise the proxy returned is an
         * instance of the pregenerated stub class for RegistryImpl.
         **/
    LiveRef liveRef = new LiveRef(new ObjID(ObjID.REGISTRY_ID), new TCPEndpoint(host, port, csf, null), false);
    RemoteRef ref = (csf == null) ? new UnicastRef(liveRef) : new UnicastRef2(liveRef);
    return (Registry) Util.createProxy(RegistryImpl.class, ref, false);
}

Example 3 with ObjID

use of java.rmi.server.ObjID in project jdk8u_jdk by JetBrains.

the class InterfaceHash method main.

public static void main(String[] args) throws Exception {
    System.err.println("\nRegression test for bug 4472769");
    System.err.println("\n=== verifying that J2SE registry's skeleton uses" + "\ncorrect interface hash and operation numbers:");
    Registry testImpl = LocateRegistry.createRegistry(PORT);
    System.err.println("created test registry on port " + PORT);
    RemoteRef ref = new UnicastRef(new LiveRef(new ObjID(ObjID.REGISTRY_ID), new TCPEndpoint("", PORT), false));
    Registry referenceStub = new ReferenceRegistryStub(ref);
    System.err.println("created reference registry stub: " + referenceStub);
    referenceStub.bind(NAME, referenceStub);
    System.err.println("bound name \"" + NAME + "\" in registry");
    String[] list = referenceStub.list();
    System.err.println("list of registry contents: " + Arrays.asList(list));
    if (list.length != 1 || !list[0].equals(NAME)) {
        throw new RuntimeException("TEST FAILED: unexpected list contents");
    }
    Registry result = (Registry) referenceStub.lookup(NAME);
    System.err.println("lookup of name \"" + NAME + "\" returned: " + result);
    if (!result.equals(referenceStub)) {
        throw new RuntimeException("TEST FAILED: unexpected lookup result");
    }
    referenceStub.rebind(NAME, referenceStub);
    referenceStub.unbind(NAME);
    System.err.println("unbound name \"" + NAME + "\"");
    list = referenceStub.list();
    System.err.println("list of registry contents: " + Arrays.asList(list));
    if (list.length != 0) {
        throw new RuntimeException("TEST FAILED: list not empty");
    }
    System.err.println("\n=== verifying that J2SE registry's stub uses" + "correct interface hash:");
    class FakeRemoteRef implements RemoteRef {

        long hash;

        int opnum;

        public RemoteCall newCall(RemoteObject obj, Operation[] op, int opnum, long hash) {
            this.hash = hash;
            this.opnum = opnum;
            throw new UnsupportedOperationException();
        }

        public void invoke(RemoteCall call) {
        }

        public void done(RemoteCall call) {
        }

        public Object invoke(Remote obj, Method method, Object[] args, long hash) {
            throw new UnsupportedOperationException();
        }

        public String getRefClass(java.io.ObjectOutput out) {
            return "FakeRemoteRef";
        }

        public int remoteHashCode() {
            return 1013;
        }

        public boolean remoteEquals(RemoteRef obj) {
            return false;
        }

        public String remoteToString() {
            return "FakeRemoteRef";
        }

        public void writeExternal(java.io.ObjectOutput out) {
        }

        public void readExternal(java.io.ObjectInput in) {
        }
    }
    FakeRemoteRef f = new FakeRemoteRef();
    Registry testRegistry = LocateRegistry.getRegistry(PORT);
    System.err.println("created original test registry stub: " + testRegistry);
    Class stubClass = testRegistry.getClass();
    System.err.println("test registry stub class: " + stubClass);
    Constructor cons = stubClass.getConstructor(new Class[] { RemoteRef.class });
    Registry testStub = (Registry) cons.newInstance(new Object[] { f });
    System.err.println("created new instrumented test registry stub: " + testStub);
    System.err.println("invoking bind:");
    try {
        testStub.bind(NAME, referenceStub);
    } catch (UnsupportedOperationException e) {
    }
    System.err.println("hash == " + f.hash + ", opnum == " + f.opnum);
    if (f.hash != 4905912898345647071L) {
        throw new RuntimeException("TEST FAILED: wrong interface hash");
    } else if (f.opnum != 0) {
        throw new RuntimeException("TEST FAILED: wrong operation number");
    }
    System.err.println("invoking list:");
    try {
        testStub.list();
    } catch (UnsupportedOperationException e) {
    }
    System.err.println("hash == " + f.hash + ", opnum == " + f.opnum);
    if (f.hash != 4905912898345647071L) {
        throw new RuntimeException("TEST FAILED: wrong interface hash");
    } else if (f.opnum != 1) {
        throw new RuntimeException("TEST FAILED: wrong operation number");
    }
    System.err.println("invoking lookup:");
    try {
        testStub.lookup(NAME);
    } catch (UnsupportedOperationException e) {
    }
    System.err.println("hash == " + f.hash + ", opnum == " + f.opnum);
    if (f.hash != 4905912898345647071L) {
        throw new RuntimeException("TEST FAILED: wrong interface hash");
    } else if (f.opnum != 2) {
        throw new RuntimeException("TEST FAILED: wrong operation number");
    }
    System.err.println("invoking rebind:");
    try {
        testStub.rebind(NAME, referenceStub);
    } catch (UnsupportedOperationException e) {
    }
    System.err.println("hash == " + f.hash + ", opnum == " + f.opnum);
    if (f.hash != 4905912898345647071L) {
        throw new RuntimeException("TEST FAILED: wrong interface hash");
    } else if (f.opnum != 3) {
        throw new RuntimeException("TEST FAILED: wrong operation number");
    }
    System.err.println("invoking unbind:");
    try {
        testStub.unbind(NAME);
    } catch (UnsupportedOperationException e) {
    }
    System.err.println("hash == " + f.hash + ", opnum == " + f.opnum);
    if (f.hash != 4905912898345647071L) {
        throw new RuntimeException("TEST FAILED: wrong interface hash");
    } else if (f.opnum != 4) {
        throw new RuntimeException("TEST FAILED: wrong operation number");
    }
    System.err.println("TEST PASSED");
}

Example 4 with ObjID

use of java.rmi.server.ObjID in project jdk8u_jdk by JetBrains.

the class RandomIDs method main.

public static void main(String[] args) throws Exception {
    boolean shouldBeRandom = false;
    boolean shouldBeSequential = false;
    String usage = "Usage: java RandomIDs [random|sequential]";
    if (args.length != 1) {
        System.err.println(usage);
        throw new Error("wrong number of arguments");
    } else if (args[0].equals("random")) {
        shouldBeRandom = true;
    } else if (args[0].equals("sequential")) {
        shouldBeSequential = true;
    } else {
        System.err.println(usage);
        throw new Error("invalid argument");
    }
    System.err.println("\nRegression test for bug 6364692\n");
    String propertyValue = System.getProperty("java.rmi.server.randomIDs");
    System.err.println("Value of java.rmi.server.randomIDs system property: " + (propertyValue != null ? "\"" + propertyValue + "\"" : null));
    System.err.println("Expecting object numbers of unique ObjIDs to be: " + args[0]);
    /*
         * Get the 64-bit "object number" component of COUNT number of
         * unique (not "well-known") ObjID instances created in
         * sequence, by writing each to a dummy ObjectOutputStream and
         * trapping the first writeLong invocation on the stream.
         */
    final long[] objnums = new long[COUNT];
    for (int i = 0; i < COUNT; i++) {
        final int j = i;
        class Escape extends RuntimeException {
        }
        try {
            new ObjID().write(new ObjectOutputStream(new OutputStream() {

                public void write(int b) {
                }
            }) {

                public void writeLong(long val) throws IOException {
                    objnums[j] = val;
                    throw new Escape();
                }
            });
            throw new Error("writeLong not invoked");
        } catch (Escape e) {
        }
    }
    /*
         * If the object numbers should be random, then verify that
         * they are.  (This verification is certainly not a thorough
         * evaluation of randomness, but it performs a couple of
         * simple checks to catch mistakes in ObjID's application of a
         * CSPRNG: are roughly half the bits set, and can the sequence
         * be used to get a rough Monte Carlo estimate of pi.  Errors
         * up to 5% are tolerated for both checks.)
         */
    if (shouldBeRandom) {
        int bitCount = 0;
        int piHitCount = 0;
        for (int i = 0; i < COUNT; i++) {
            bitCount += Long.bitCount(objnums[i]);
            double x = ((double) (objnums[i] >>> 32)) / (1L << 32);
            double y = ((double) (objnums[i] & 0xFFFFFFFFL)) / (1L << 32);
            if (((x * x) + (y * y)) <= 1.0) {
                piHitCount++;
            }
        }
        int bitCountTarget = COUNT * 32;
        double bitCountError = ((double) (bitCount - bitCountTarget)) / bitCountTarget;
        if (Math.abs(bitCountError) > 0.05) {
            // tolerate 5% error
            throw new Error("TEST FAILED: " + "bitCount == " + bitCount);
        }
        double piEstimate = ((double) piHitCount / COUNT) * 4.0;
        double piEstimateError = (piEstimate - Math.PI) / Math.PI;
        if (Math.abs(piEstimateError) > 0.05) {
            // tolerate 5% error
            throw new Error("TEST FAILED: " + "piEstimate == " + piEstimate);
        }
    }
    /*
         * If the object numbers should be sequential, then verify
         * that they are.
         */
    if (shouldBeSequential) {
        long first = objnums[0];
        /*
             * This test currently verifies that the first object
             * number is zero, but that could be false if one or more
             * remote objects get exported as part of VM startup-- if
             * that starts happening, this check could be relaxed.
             */
        if (first != 0) {
            throw new Error("TEST FAILED: " + "first object number == " + first + " (not zero)");
        }
        for (int i = 1; i < COUNT; i++) {
            if (objnums[i] != first + i) {
                throw new Error("TEST FAILED: first == " + first + ", " + "objnums[" + i + "] == " + objnums[i]);
            }
        }
    }
    System.err.println("TEST PASSED");
}

Example 5 with ObjID

use of java.rmi.server.ObjID in project jdk8u_jdk by JetBrains.

the class Transport method serviceCall.

/**
     * Service an incoming remote call. When a message arrives on the
     * connection indicating the beginning of a remote call, the
     * threads are required to call the <I>serviceCall</I> method of
     * their transport.  The default implementation of this method
     * locates and calls the dispatcher object.  Ordinarily a
     * transport implementation will not need to override this method.
     * At the entry to <I>tr.serviceCall(conn)</I>, the connection's
     * input stream is positioned at the start of the incoming
     * message.  The <I>serviceCall</I> method processes the incoming
     * remote invocation and sends the result on the connection's
     * output stream.  If it returns "true", then the remote
     * invocation was processed without error and the transport can
     * cache the connection.  If it returns "false", a protocol error
     * occurred during the call, and the transport should destroy the
     * connection.
     */
public boolean serviceCall(final RemoteCall call) {
    try {
        /* read object id */
        final Remote impl;
        ObjID id;
        try {
            id = ObjID.read(call.getInputStream());
        } catch (java.io.IOException e) {
            throw new MarshalException("unable to read objID", e);
        }
        /* get the remote object */
        Transport transport = id.equals(dgcID) ? null : this;
        Target target = ObjectTable.getTarget(new ObjectEndpoint(id, transport));
        if (target == null || (impl = target.getImpl()) == null) {
            throw new NoSuchObjectException("no such object in table");
        }
        final Dispatcher disp = target.getDispatcher();
        target.incrementCallCount();
        try {
            /* call the dispatcher */
            transportLog.log(Log.VERBOSE, "call dispatcher");
            final AccessControlContext acc = target.getAccessControlContext();
            ClassLoader ccl = target.getContextClassLoader();
            ClassLoader savedCcl = Thread.currentThread().getContextClassLoader();
            try {
                setContextClassLoader(ccl);
                currentTransport.set(this);
                try {
                    java.security.AccessController.doPrivileged(new java.security.PrivilegedExceptionAction<Void>() {

                        public Void run() throws IOException {
                            checkAcceptPermission(acc);
                            disp.dispatch(impl, call);
                            return null;
                        }
                    }, acc);
                } catch (java.security.PrivilegedActionException pae) {
                    throw (IOException) pae.getException();
                }
            } finally {
                setContextClassLoader(savedCcl);
                currentTransport.set(null);
            }
        } catch (IOException ex) {
            transportLog.log(Log.BRIEF, "exception thrown by dispatcher: ", ex);
            return false;
        } finally {
            target.decrementCallCount();
        }
    } catch (RemoteException e) {
        // if calls are being logged, write out exception
        if (UnicastServerRef.callLog.isLoggable(Log.BRIEF)) {
            // include client host name if possible
            String clientHost = "";
            try {
                clientHost = "[" + RemoteServer.getClientHost() + "] ";
            } catch (ServerNotActiveException ex) {
            }
            String message = clientHost + "exception: ";
            UnicastServerRef.callLog.log(Log.BRIEF, message, e);
        }
        /* We will get a RemoteException if either a) the objID is
             * not readable, b) the target is not in the object table, or
             * c) the object is in the midst of being unexported (note:
             * NoSuchObjectException is thrown by the incrementCallCount
             * method if the object is being unexported).  Here it is
             * relatively safe to marshal an exception to the client
             * since the client will not have seen a return value yet.
             */
        try {
            ObjectOutput out = call.getResultStream(false);
            UnicastServerRef.clearStackTraces(e);
            out.writeObject(e);
            call.releaseOutputStream();
        } catch (IOException ie) {
            transportLog.log(Log.BRIEF, "exception thrown marshalling exception: ", ie);
            return false;
        }
    }
    return true;
}