J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | */ |
| 26 | |
| 27 | import java.io.*; |
| 28 | import java.net.*; |
| 29 | import java.rmi.*; |
| 30 | import java.rmi.server.*; |
| 31 | import java.util.zip.*; |
| 32 | |
| 33 | |
| 34 | public class MultiSocketFactory { |
| 35 | |
| 36 | private static RMISocketFactory def = |
| 37 | RMISocketFactory.getDefaultSocketFactory(); |
| 38 | |
| 39 | |
| 40 | public static class ServerFactory |
| 41 | implements RMIServerSocketFactory, Serializable |
| 42 | { |
| 43 | |
| 44 | private String protocol; |
| 45 | private byte[] data; |
| 46 | |
| 47 | public ServerFactory(String protocol, byte[] data) { |
| 48 | this.protocol = protocol; |
| 49 | this.data = data; |
| 50 | } |
| 51 | |
| 52 | public ServerSocket createServerSocket(int port) throws IOException |
| 53 | { |
| 54 | if (protocol.equals("compress")) { |
| 55 | return new CompressServerSocket(port); |
| 56 | |
| 57 | } else if (protocol.equals("xor")) { |
| 58 | if (data == null || data.length != 1) |
| 59 | throw new IOException("invalid argument for XOR protocol"); |
| 60 | return new XorServerSocket(port, data[0]); |
| 61 | |
| 62 | } |
| 63 | |
| 64 | return def.createServerSocket(port); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | public static class ClientFactory |
| 69 | implements RMIClientSocketFactory, Serializable |
| 70 | { |
| 71 | |
| 72 | private String protocol; |
| 73 | private byte[] data; |
| 74 | |
| 75 | public ClientFactory(String protocol, byte[] data) { |
| 76 | this.protocol = protocol; |
| 77 | this.data = data; |
| 78 | } |
| 79 | |
| 80 | public Socket createSocket(String host, int port) |
| 81 | throws IOException |
| 82 | { |
| 83 | if (protocol.equals("compress")) { |
| 84 | return new CompressSocket(host, port); |
| 85 | |
| 86 | } else if (protocol.equals("xor")) { |
| 87 | if (data == null || data.length != 1) |
| 88 | throw new IOException("invalid argument for XOR protocol"); |
| 89 | return new XorSocket(host, port, data[0]); |
| 90 | |
| 91 | } |
| 92 | |
| 93 | return def.createSocket(host, port); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | static class CompressSocket extends Socket { |
| 98 | private InputStream in; |
| 99 | private OutputStream out; |
| 100 | public CompressSocket() { super(); } |
| 101 | public CompressSocket(String host, int port) throws IOException { |
| 102 | super(host, port); |
| 103 | } |
| 104 | public InputStream getInputStream() throws IOException { |
| 105 | if (in == null) { |
| 106 | in = new CompressInputStream(super.getInputStream()); |
| 107 | } |
| 108 | return in; |
| 109 | } |
| 110 | public OutputStream getOutputStream() throws IOException { |
| 111 | if (out == null) { |
| 112 | out = new CompressOutputStream(super.getOutputStream()); |
| 113 | } |
| 114 | return out; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | static class CompressServerSocket extends ServerSocket { |
| 119 | public CompressServerSocket(int port) throws IOException { |
| 120 | super(port); |
| 121 | } |
| 122 | public Socket accept() throws IOException { |
| 123 | Socket s = new CompressSocket(); |
| 124 | implAccept(s); |
| 125 | return s; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | static class XorSocket extends Socket { |
| 130 | private byte pattern; |
| 131 | private InputStream in; |
| 132 | private OutputStream out; |
| 133 | public XorSocket(byte pattern) { super(); this.pattern = pattern; } |
| 134 | public XorSocket(String host, int port, byte pattern) |
| 135 | throws IOException |
| 136 | { |
| 137 | super(host, port); |
| 138 | this.pattern = pattern; |
| 139 | } |
| 140 | public InputStream getInputStream() throws IOException { |
| 141 | if (in == null) { |
| 142 | in = new XorInputStream(super.getInputStream(), pattern); |
| 143 | } |
| 144 | return in; |
| 145 | } |
| 146 | public OutputStream getOutputStream() throws IOException { |
| 147 | if (out == null) { |
| 148 | out = new XorOutputStream(super.getOutputStream(), pattern); |
| 149 | } |
| 150 | return out; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | static class XorServerSocket extends ServerSocket { |
| 155 | private byte pattern; |
| 156 | public XorServerSocket(int port, byte pattern) throws IOException { |
| 157 | super(port); |
| 158 | this.pattern = pattern; |
| 159 | } |
| 160 | public Socket accept() throws IOException { |
| 161 | Socket s = new XorSocket(pattern); |
| 162 | implAccept(s); |
| 163 | return s; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | static class XorOutputStream extends FilterOutputStream { |
| 168 | private byte pattern; |
| 169 | public XorOutputStream(OutputStream out, byte pattern) { |
| 170 | super(out); |
| 171 | this.pattern = pattern; |
| 172 | } |
| 173 | public void write(int b) throws IOException { |
| 174 | out.write(b ^ pattern); |
| 175 | out.flush(); |
| 176 | } |
| 177 | public void write(byte b[], int off, int len) throws IOException { |
| 178 | for (int i = 0; i < len; i++) |
| 179 | write(b[off + i]); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static class XorInputStream extends FilterInputStream { |
| 184 | private byte pattern; |
| 185 | public XorInputStream(InputStream in, byte pattern) { |
| 186 | super(in); |
| 187 | this.pattern = pattern; |
| 188 | } |
| 189 | public int read() throws IOException { |
| 190 | int b = in.read(); |
| 191 | // System.out.print("BEFORE: " + Integer.toHexString(b)); |
| 192 | if (b != -1) |
| 193 | b = (b ^ pattern) & 0xFF; |
| 194 | // System.out.println("\tAFTER: " + Integer.toHexString(b)); |
| 195 | return b; |
| 196 | } |
| 197 | public int read(byte b[], int off, int len) throws IOException { |
| 198 | if (len <= 0) { |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | int c = read(); |
| 203 | if (c == -1) { |
| 204 | return -1; |
| 205 | } |
| 206 | b[off] = (byte)c; |
| 207 | |
| 208 | int i = 1; |
| 209 | /***** |
| 210 | try { |
| 211 | for (; i < len ; i++) { |
| 212 | c = read(); |
| 213 | if (c == -1) { |
| 214 | break; |
| 215 | } |
| 216 | if (b != null) { |
| 217 | b[off + i] = (byte)c; |
| 218 | } |
| 219 | } |
| 220 | } catch (IOException ee) { |
| 221 | } |
| 222 | *****/ |
| 223 | return i; |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | |