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1 /* |
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2 * Copyright (c) 2016, 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 /* |
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27 * @test |
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28 * @summary class p3.c3 defined in module m1 tries to access c4 defined in unnamed module. |
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29 * @library /testlibrary /test/lib |
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30 * @compile myloaders/MySameClassLoader.java |
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31 * @compile c4.java |
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32 * @compile p3/c3.jcod |
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33 * @compile p3/c3ReadEdge.jcod |
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34 * @build UmodUPkg |
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35 * @run main/othervm -Xbootclasspath/a:. UmodUPkg |
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36 */ |
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37 |
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38 import static jdk.test.lib.Asserts.*; |
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39 |
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40 import java.lang.module.Configuration; |
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41 import java.lang.module.ModuleDescriptor; |
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42 import java.lang.module.ModuleFinder; |
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43 import java.lang.reflect.Layer; |
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44 import java.lang.reflect.Module; |
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45 import java.util.HashMap; |
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46 import java.util.Map; |
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47 import java.util.Set; |
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48 import myloaders.MySameClassLoader; |
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49 |
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50 // |
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51 // ClassLoader1 --> defines m1 --> packages p3 |
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52 // package p3 in m1 is exported unqualifiedly |
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53 // |
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54 // class p3.c3 defined in m1 tries to access c4 defined in |
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55 // in unnamed module. |
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56 // |
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57 // Two access attempts occur in this test: |
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58 // 1. The first access is not allowed because a strict module |
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59 // cannot read an unnamed module. |
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60 // 2. In this scenario a strict module establishes readability |
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61 // to the particular unnamed module it is trying to access. |
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62 // Access is allowed. |
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63 // |
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64 public class UmodUPkg { |
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65 |
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66 // Create Layers over the boot layer to test different |
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67 // accessing scenarios of a named module to an unnamed module. |
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68 |
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69 // Module m1 is a strict module and has not established |
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70 // readability to an unnamed module that c4 is defined in. |
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71 public void test_strictModuleLayer() throws Throwable { |
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72 |
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73 // Define module: m1 |
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74 // Can read: java.base |
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75 // Packages: p3 |
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76 // Packages exported: p3 is exported unqualifiedly |
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77 ModuleDescriptor descriptor_m1 = |
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78 new ModuleDescriptor.Builder("m1") |
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79 .requires("java.base") |
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80 .exports("p3") |
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81 .build(); |
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82 |
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83 // Set up a ModuleFinder containing all modules for this layer. |
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84 ModuleFinder finder = ModuleLibrary.of(descriptor_m1); |
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85 |
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86 // Resolves "m1" |
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87 Configuration cf = Layer.boot() |
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88 .configuration() |
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89 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1")); |
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90 |
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91 // map module m1 to class loader. |
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92 // class c4 will be loaded in an unnamed module/loader. |
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93 MySameClassLoader loader = new MySameClassLoader(); |
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94 Map<String, ClassLoader> map = new HashMap<>(); |
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95 map.put("m1", loader); |
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96 |
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97 // Create Layer that contains m1 |
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98 Layer layer = Layer.boot().defineModules(cf, map::get); |
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99 |
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100 assertTrue(layer.findLoader("m1") == loader); |
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101 assertTrue(layer.findLoader("java.base") == null); |
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102 |
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103 // now use the same loader to load class p3.c3 |
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104 Class p3_c3_class = loader.loadClass("p3.c3"); |
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105 |
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106 // Attempt access |
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107 try { |
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108 p3_c3_class.newInstance(); |
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109 throw new RuntimeException("Test Failed, strict module m1, type p3.c3, should not be able to access " + |
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110 "public type c4 defined in unnamed module"); |
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111 } catch (IllegalAccessError e) { |
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112 } |
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113 } |
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114 |
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115 // Module m1 is a strict module and has established |
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116 // readability to an unnamed module that c4 is defined in. |
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117 public void test_strictModuleUnnamedReadableLayer() throws Throwable { |
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118 |
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119 // Define module: m1 |
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120 // Can read: java.base |
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121 // Packages: p3 |
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122 // Packages exported: p3 is exported unqualifiedly |
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123 ModuleDescriptor descriptor_m1 = |
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124 new ModuleDescriptor.Builder("m1") |
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125 .requires("java.base") |
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126 .exports("p3") |
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127 .build(); |
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128 |
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129 // Set up a ModuleFinder containing all modules for this layer. |
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130 ModuleFinder finder = ModuleLibrary.of(descriptor_m1); |
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131 |
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132 // Resolves "m1" |
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133 Configuration cf = Layer.boot() |
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134 .configuration() |
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135 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1")); |
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136 |
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137 MySameClassLoader loader = new MySameClassLoader(); |
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138 // map module m1 to class loader. |
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139 // class c4 will be loaded in an unnamed module/loader. |
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140 Map<String, ClassLoader> map = new HashMap<>(); |
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141 map.put("m1", loader); |
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142 |
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143 // Create Layer that contains m1 |
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144 Layer layer = Layer.boot().defineModules(cf, map::get); |
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145 |
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146 assertTrue(layer.findLoader("m1") == loader); |
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147 assertTrue(layer.findLoader("java.base") == null); |
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148 |
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149 // now use the same loader to load class p3.c3ReadEdge |
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150 Class p3_c3_class = loader.loadClass("p3.c3ReadEdge"); |
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151 |
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152 try { |
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153 // Read edge between m1 and the unnamed module that loads c4 is established in |
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154 // c3ReadEdge's ctor before attempting access. |
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155 p3_c3_class.newInstance(); |
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156 } catch (IllegalAccessError e) { |
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157 throw new RuntimeException("Test Failed, module m1, type p3.c3ReadEdge, has established readability to " + |
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158 "c4 loader's unnamed module, access should be allowed: " + e.getMessage()); |
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159 } |
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160 } |
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161 |
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162 public static void main(String args[]) throws Throwable { |
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163 UmodUPkg test = new UmodUPkg(); |
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164 test.test_strictModuleLayer(); // access denied |
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165 test.test_strictModuleUnnamedReadableLayer(); // access allowed |
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166 } |
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167 } |