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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 p1.c1 defined in m1 tries to access p2.c2 defined in unnamed module. |
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29 * @library /testlibrary /test/lib |
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30 * @modules java.base/jdk.internal.module |
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31 * @compile myloaders/MyDiffClassLoader.java |
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32 * @compile p2/c2.java |
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33 * @compile p1/c1.java |
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34 * @compile p1/c1ReadEdgeDiffLoader.java |
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35 * @compile p1/c1Loose.java |
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36 * @build DiffCL_Umod |
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37 * @run main/othervm -Xbootclasspath/a:. DiffCL_Umod |
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38 */ |
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39 |
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40 import static jdk.test.lib.Asserts.*; |
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41 |
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42 import java.lang.module.Configuration; |
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43 import java.lang.module.ModuleDescriptor; |
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44 import java.lang.module.ModuleFinder; |
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45 import java.lang.reflect.Layer; |
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46 import java.lang.reflect.Module; |
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47 import java.util.HashMap; |
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48 import java.util.Map; |
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49 import java.util.Set; |
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50 import myloaders.MyDiffClassLoader; |
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51 |
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52 // |
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53 // ClassLoader1 --> defines m1 --> packages p1 |
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54 // package p1 in m1 is exported unqualifiedly |
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55 // |
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56 // class p1.c1 defined in m1 tries to access p2.c2 defined in |
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57 // in unnamed module. |
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58 // |
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59 // Three access attempts occur in this test: |
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60 // 1. The first access is not allowed because a strict module |
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61 // cannot read an unnamed module. |
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62 // 2. In this scenario a strict module establishes readability |
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63 // to the particular unnamed module it is trying to access. |
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64 // Access is allowed. |
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65 // 3. Module m1 in the test_looseModuleLayer() method |
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66 // is transitioned to a loose module, access |
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67 // to all unnamed modules is allowed. |
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68 // |
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69 public class DiffCL_Umod { |
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70 |
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71 // Create Layers over the boot layer to test different |
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72 // accessing scenarios of a named module to an unnamed module. |
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73 |
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74 // Module m1 is a strict module and has not established |
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75 // readability to an unnamed module that p2.c2 is defined in. |
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76 public void test_strictModuleLayer() throws Throwable { |
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77 |
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78 // Define module: m1 |
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79 // Can read: java.base |
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80 // Packages: p1 |
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81 // Packages exported: p1 is exported unqualifiedly |
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82 ModuleDescriptor descriptor_m1 = |
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83 new ModuleDescriptor.Builder("m1") |
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84 .requires("java.base") |
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85 .exports("p1") |
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86 .build(); |
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87 |
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88 // Set up a ModuleFinder containing all modules for this layer. |
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89 ModuleFinder finder = ModuleLibrary.of(descriptor_m1); |
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90 |
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91 // Resolves "m1" |
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92 Configuration cf = Layer.boot() |
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93 .configuration() |
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94 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1")); |
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95 |
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96 MyDiffClassLoader.loader1 = new MyDiffClassLoader(); |
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97 MyDiffClassLoader.loader2 = new MyDiffClassLoader(); |
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98 |
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99 // map module m1 to class loader. |
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100 // class c2 will be loaded in an unnamed module/loader2 |
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101 // to achieve differing class loaders. |
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102 Map<String, ClassLoader> map = new HashMap<>(); |
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103 map.put("m1", MyDiffClassLoader.loader1); |
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104 |
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105 // Create Layer that contains m1 |
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106 Layer layer = Layer.boot().defineModules(cf, map::get); |
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107 |
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108 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1); |
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109 assertTrue(layer.findLoader("java.base") == null); |
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110 |
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111 // now use the same loader to load class p1.c1 |
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112 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1"); |
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113 |
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114 // Attempt access |
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115 try { |
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116 p1_c1_class.newInstance(); |
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117 throw new RuntimeException("Test Failed, strict module m1 should not be able " + |
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118 "to access public type p2.c2 defined in unnamed module"); |
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119 } catch (IllegalAccessError e) { |
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120 } |
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121 } |
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122 |
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123 // Module m1 is a strict module and has established |
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124 // readability to an unnamed module that p2.c2 is defined in. |
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125 public void test_strictModuleUnnamedReadableLayer() throws Throwable { |
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126 |
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127 // Define module: m1 |
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128 // Can read: java.base |
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129 // Packages: p1 |
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130 // Packages exported: p1 is exported unqualifiedly |
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131 ModuleDescriptor descriptor_m1 = |
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132 new ModuleDescriptor.Builder("m1") |
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133 .requires("java.base") |
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134 .exports("p1") |
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135 .build(); |
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136 |
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137 // Set up a ModuleFinder containing all modules for this layer. |
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138 ModuleFinder finder = ModuleLibrary.of(descriptor_m1); |
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139 |
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140 // Resolves "m1" |
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141 Configuration cf = Layer.boot() |
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142 .configuration() |
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143 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1")); |
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144 |
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145 MyDiffClassLoader.loader1 = new MyDiffClassLoader(); |
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146 MyDiffClassLoader.loader2 = new MyDiffClassLoader(); |
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147 |
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148 // map module m1 to class loader. |
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149 // class c2 will be loaded in an unnamed module/loader2 |
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150 // to achieve differing class loaders. |
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151 Map<String, ClassLoader> map = new HashMap<>(); |
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152 map.put("m1", MyDiffClassLoader.loader1); |
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153 |
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154 // Create Layer that contains m1 |
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155 Layer layer = Layer.boot().defineModules(cf, map::get); |
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156 |
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157 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1); |
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158 assertTrue(layer.findLoader("java.base") == null); |
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159 |
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160 // now use the same loader to load class p1.c1ReadEdgeDiffLoader |
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161 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1ReadEdgeDiffLoader"); |
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162 |
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163 try { |
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164 // Read edge between m1 and the unnamed module that loads p2.c2 is established in |
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165 // c1ReadEdgeDiffLoader's ctor before attempting access. |
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166 p1_c1_class.newInstance(); |
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167 } catch (IllegalAccessError e) { |
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168 throw new RuntimeException("Test Failed, module m1 has established readability to p2/c2 loader's " + |
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169 "unnamed module, access should be allowed: " + e.getMessage()); |
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170 } |
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171 } |
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172 |
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173 // Module m1 is a loose module and thus can read all unnamed modules. |
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174 public void test_looseModuleLayer() throws Throwable { |
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175 |
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176 // Define module: m1 |
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177 // Can read: java.base |
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178 // Packages: p1 |
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179 // Packages exported: p1 is exported unqualifiedly |
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180 ModuleDescriptor descriptor_m1 = |
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181 new ModuleDescriptor.Builder("m1") |
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182 .requires("java.base") |
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183 .exports("p1") |
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184 .build(); |
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185 |
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186 // Set up a ModuleFinder containing all modules for this layer. |
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187 ModuleFinder finder = ModuleLibrary.of(descriptor_m1); |
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188 |
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189 // Resolves "m1" |
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190 Configuration cf = Layer.boot() |
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191 .configuration() |
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192 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1")); |
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193 |
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194 MyDiffClassLoader.loader1 = new MyDiffClassLoader(); |
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195 MyDiffClassLoader.loader2 = new MyDiffClassLoader(); |
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196 |
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197 // map module m1 to class loader. |
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198 // class c2 will be loaded in an unnamed module/loader2 |
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199 // to achieve differing class loaders. |
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200 Map<String, ClassLoader> map = new HashMap<>(); |
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201 map.put("m1", MyDiffClassLoader.loader1); |
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202 |
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203 // Create Layer that contains m1 |
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204 Layer layer = Layer.boot().defineModules(cf, map::get); |
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205 |
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206 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1); |
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207 assertTrue(layer.findLoader("java.base") == null); |
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208 |
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209 // now use the same loader to load class p1.c1Loose |
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210 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1Loose"); |
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211 |
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212 // change m1 to be a loose module |
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213 Module m1 = layer.findModule("m1").get(); |
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214 jdk.internal.module.Modules.addReads(m1, null); |
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215 |
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216 try { |
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217 p1_c1_class.newInstance(); |
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218 } catch (IllegalAccessError e) { |
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219 throw new RuntimeException("Test Failed, loose module m1 should be able to access " + |
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220 "public type p2.c2 defined in unnamed module: " + e.getMessage()); |
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221 } |
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222 } |
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223 |
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224 public static void main(String args[]) throws Throwable { |
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225 DiffCL_Umod test = new DiffCL_Umod(); |
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226 test.test_strictModuleLayer(); // access denied |
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227 test.test_strictModuleUnnamedReadableLayer(); // access allowed |
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228 test.test_looseModuleLayer(); // access allowed |
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229 } |
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230 } |