feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/sun/security/krb5/internal/NetClient.java

@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ *
+ *  (C) Copyright IBM Corp. 1999 All Rights Reserved.
+ *  Copyright 1997 The Open Group Research Institute.  All rights reserved.
+ */
+
+package sun.security.krb5.internal;
+
+import sun.misc.IOUtils;
+
+import java.io.*;
+import java.net.*;
+
+public abstract class NetClient implements AutoCloseable {
+    public static NetClient getInstance(String protocol, String hostname, int port,
+            int timeout) throws IOException {
+        if (protocol.equals("TCP")) {
+            return new TCPClient(hostname, port, timeout);
+        } else {
+            return new UDPClient(hostname, port, timeout);
+        }
+    }
+
+    abstract public void send(byte[] data) throws IOException;
+    abstract public byte[] receive() throws IOException;
+    abstract public void close() throws IOException;
+}
+
+class TCPClient extends NetClient {
+
+    private Socket tcpSocket;
+    private BufferedOutputStream out;
+    private BufferedInputStream in;
+
+    TCPClient(String hostname, int port, int timeout)
+            throws IOException {
+        tcpSocket = new Socket();
+        tcpSocket.connect(new InetSocketAddress(hostname, port), timeout);
+        out = new BufferedOutputStream(tcpSocket.getOutputStream());
+        in = new BufferedInputStream(tcpSocket.getInputStream());
+        tcpSocket.setSoTimeout(timeout);
+    }
+
+    @Override
+    public void send(byte[] data) throws IOException {
+        byte[] lenField = new byte[4];
+        intToNetworkByteOrder(data.length, lenField, 0, 4);
+        out.write(lenField);
+
+        out.write(data);
+        out.flush();
+    }
+
+    @Override
+    public byte[] receive() throws IOException {
+        byte[] lenField = new byte[4];
+        int count = readFully(lenField, 4);
+
+        if (count != 4) {
+            if (Krb5.DEBUG) {
+                System.out.println(
+                    ">>>DEBUG: TCPClient could not read length field");
+            }
+            return null;
+        }
+
+        int len = networkByteOrderToInt(lenField, 0, 4);
+        if (Krb5.DEBUG) {
+            System.out.println(
+                ">>>DEBUG: TCPClient reading " + len + " bytes");
+        }
+        if (len <= 0) {
+            if (Krb5.DEBUG) {
+                System.out.println(
+                    ">>>DEBUG: TCPClient zero or negative length field: "+len);
+            }
+            return null;
+        }
+
+        try {
+            return IOUtils.readExactlyNBytes(in, len);
+        } catch (IOException ioe) {
+            if (Krb5.DEBUG) {
+                System.out.println(
+                    ">>>DEBUG: TCPClient could not read complete packet (" +
+                    len + "/" + count + ")");
+            }
+            return null;
+        }
+    }
+
+    @Override
+    public void close() throws IOException {
+        tcpSocket.close();
+    }
+
+    /**
+     * Read requested number of bytes before returning.
+     * @return The number of bytes actually read; -1 if none read
+     */
+    private int readFully(byte[] inBuf, int total) throws IOException {
+        int count, pos = 0;
+
+        while (total > 0) {
+            count = in.read(inBuf, pos, total);
+
+            if (count == -1) {
+                return (pos == 0? -1 : pos);
+            }
+            pos += count;
+            total -= count;
+        }
+        return pos;
+    }
+
+    /**
+     * Returns the integer represented by 4 bytes in network byte order.
+     */
+    private static int networkByteOrderToInt(byte[] buf, int start,
+        int count) {
+        if (count > 4) {
+            throw new IllegalArgumentException(
+                "Cannot handle more than 4 bytes");
+        }
+
+        int answer = 0;
+
+        for (int i = 0; i < count; i++) {
+            answer <<= 8;
+            answer |= ((int)buf[start+i] & 0xff);
+        }
+        return answer;
+    }
+
+    /**
+     * Encodes an integer into 4 bytes in network byte order in the buffer
+     * supplied.
+     */
+    private static void intToNetworkByteOrder(int num, byte[] buf,
+        int start, int count) {
+        if (count > 4) {
+            throw new IllegalArgumentException(
+                "Cannot handle more than 4 bytes");
+        }
+
+        for (int i = count-1; i >= 0; i--) {
+            buf[start+i] = (byte)(num & 0xff);
+            num >>>= 8;
+        }
+    }
+}
+
+class UDPClient extends NetClient {
+    InetAddress iaddr;
+    int iport;
+    int bufSize = 65507;
+    DatagramSocket dgSocket;
+    DatagramPacket dgPacketIn;
+
+    UDPClient(String hostname, int port, int timeout)
+        throws UnknownHostException, SocketException {
+        iaddr = InetAddress.getByName(hostname);
+        iport = port;
+        dgSocket = new DatagramSocket();
+        dgSocket.setSoTimeout(timeout);
+        dgSocket.connect(iaddr, iport);
+    }
+
+    @Override
+    public void send(byte[] data) throws IOException {
+        DatagramPacket dgPacketOut = new DatagramPacket(data, data.length,
+                                                        iaddr, iport);
+        dgSocket.send(dgPacketOut);
+    }
+
+    @Override
+    public byte[] receive() throws IOException {
+        byte ibuf[] = new byte[bufSize];
+        dgPacketIn = new DatagramPacket(ibuf, ibuf.length);
+        try {
+            dgSocket.receive(dgPacketIn);
+        }
+        catch (SocketException e) {
+            if (e instanceof PortUnreachableException) {
+                throw e;
+            }
+            dgSocket.receive(dgPacketIn);
+        }
+        byte[] data = new byte[dgPacketIn.getLength()];
+        System.arraycopy(dgPacketIn.getData(), 0, data, 0,
+                         dgPacketIn.getLength());
+        return data;
+    }
+
+    @Override
+    public void close() {
+        dgSocket.close();
+    }
+}