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1 /* |
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2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package java.nio.channels; |
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27 |
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28 import java.net.SocketAddress; |
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29 import java.nio.file.Path; |
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30 import java.security.AccessController; |
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31 import java.security.PrivilegedAction; |
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32 import java.util.Objects; |
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33 |
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34 /** |
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35 * An address for a Unix domain socket or server socket channel. These |
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36 * addresses contain a String path name, which when bound to a channel, |
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37 * have an associated file in the file-system with the same name. |
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38 * <p> |
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39 * If a channel is automatically bound to Unix domain address then its address |
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40 * is unnamed, has an empty path field, and therefore has no associated |
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41 * file in the file-system. |
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42 * <p> |
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43 * Note, not all channel types support Unix domain addresses. |
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44 * |
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45 * @since 14 |
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46 */ |
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47 public class UnixDomainSocketAddress extends SocketAddress { |
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48 |
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49 static final long serialVersionUID = 9829020419651288L; |
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50 |
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51 static { |
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52 if (System.getSecurityManager() == null) { |
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53 System.loadLibrary("nio"); |
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54 } else { |
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55 AccessController.doPrivileged((PrivilegedAction<Void>) () -> { |
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56 System.loadLibrary("nio"); |
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57 return null; |
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58 }); |
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59 } |
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60 init(); |
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61 } |
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62 |
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63 private final String path; |
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64 |
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65 /** |
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66 * Create a named UnixDomainSocketAddress for the given path string. |
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67 * |
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68 * @param path the pathname to the socket. |
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69 * |
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70 * @throws NullPointerException if path is null |
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71 */ |
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72 public UnixDomainSocketAddress(String path) { |
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73 Objects.requireNonNull(path); |
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74 this.path = path; |
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75 } |
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76 |
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77 /** |
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78 * Create a named UnixDomainSocketAddress for the given path. |
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79 * |
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80 * @param path the path to the socket. |
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81 * |
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82 * @throws NullPointerException if path is null |
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83 */ |
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84 public UnixDomainSocketAddress(Path path) { |
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85 Objects.requireNonNull(path); |
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86 this.path = path.toString(); |
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87 } |
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88 |
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89 /** |
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90 * Return this address's path. |
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91 * |
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92 * @return this address's path |
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93 */ |
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94 public String getPath() { |
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95 return path; |
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96 } |
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97 |
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98 static native void init(); |
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99 |
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100 /** |
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101 * Returns a hashcode computed from this object's path string. |
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102 */ |
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103 @Override |
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104 public int hashCode() { |
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105 return path.hashCode(); |
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106 } |
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107 |
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108 /** |
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109 * Compares this address with another object. |
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110 * |
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111 * @return true if the path fields are equal |
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112 */ |
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113 @Override |
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114 public boolean equals(Object o) { |
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115 if (! (o instanceof UnixDomainSocketAddress)) |
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116 return false; |
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117 UnixDomainSocketAddress that = (UnixDomainSocketAddress)o; |
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118 return this.path.equals(that.path); |
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119 } |
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120 |
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121 @Override |
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122 public String toString() { |
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123 StringBuilder sb = new StringBuilder(); |
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124 sb.append("af_unix:"); |
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125 if (path != null) |
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126 sb.append(path); |
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127 return sb.toString(); |
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128 } |
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129 } |