| 1 | package net.oni2.aeinstaller.backend;
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| 2 |
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| 3 | import java.lang.reflect.InvocationTargetException;
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| 4 | import java.lang.reflect.Method;
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| 5 | import java.util.ArrayList;
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| 6 | import java.util.HashMap;
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| 7 | import java.util.List;
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| 8 | import java.util.Map;
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| 9 | import java.util.prefs.Preferences;
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| 10 |
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| 11 | /**
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| 12 | * @author Unknown
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| 13 | */
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| 14 | public class WinRegistry {
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| 15 | /**
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| 16 | * Constant for accessing HKCU
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| 17 | */
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| 18 | public static final int HKEY_CURRENT_USER = 0x80000001;
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| 19 | /**
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| 20 | * Constant for accessing HKLM
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| 21 | */
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| 22 | public static final int HKEY_LOCAL_MACHINE = 0x80000002;
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| 23 | /**
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| 24 | * Constant for successful accesses
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| 25 | */
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| 26 | public static final int REG_SUCCESS = 0;
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| 27 | /**
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| 28 | * Constant for not found
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| 29 | */
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| 30 | public static final int REG_NOTFOUND = 2;
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| 31 | /**
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| 32 | * Constant for access denied
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| 33 | */
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| 34 | public static final int REG_ACCESSDENIED = 5;
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| 35 |
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| 36 | /**
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| 37 | * Access 32bit registry view when running as 64bit application
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| 38 | */
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| 39 | public static final int KEY_WOW64_32KEY = 0x0200;
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| 40 | /**
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| 41 | * Access 64bit registry view when running as 32bit application
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| 42 | */
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| 43 | public static final int KEY_WOW64_64KEY = 0x0100;
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| 44 |
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| 45 | private static final int KEY_ALL_ACCESS = 0xf003f;
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| 46 | private static final int KEY_READ = 0x20019;
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| 47 | private static Preferences userRoot = Preferences.userRoot();
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| 48 | private static Preferences systemRoot = Preferences.systemRoot();
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| 49 | private static Class<? extends Preferences> userClass = userRoot.getClass();
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| 50 | private static Method regOpenKey = null;
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| 51 | private static Method regCloseKey = null;
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| 52 | private static Method regQueryValueEx = null;
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| 53 | private static Method regEnumValue = null;
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| 54 | private static Method regQueryInfoKey = null;
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| 55 | private static Method regEnumKeyEx = null;
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| 56 | private static Method regCreateKeyEx = null;
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| 57 | private static Method regSetValueEx = null;
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| 58 | private static Method regDeleteKey = null;
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| 59 | private static Method regDeleteValue = null;
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| 60 |
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| 61 | private static boolean usable = false;
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| 62 |
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| 63 | static {
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| 64 | try {
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| 65 | regOpenKey = userClass.getDeclaredMethod("WindowsRegOpenKey",
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| 66 | new Class[] { int.class, byte[].class, int.class });
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| 67 | regOpenKey.setAccessible(true);
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| 68 | regCloseKey = userClass.getDeclaredMethod("WindowsRegCloseKey",
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| 69 | new Class[] { int.class });
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| 70 | regCloseKey.setAccessible(true);
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| 71 | regQueryValueEx = userClass.getDeclaredMethod(
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| 72 | "WindowsRegQueryValueEx", new Class[] { int.class,
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| 73 | byte[].class });
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| 74 | regQueryValueEx.setAccessible(true);
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| 75 | regEnumValue = userClass.getDeclaredMethod("WindowsRegEnumValue",
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| 76 | new Class[] { int.class, int.class, int.class });
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| 77 | regEnumValue.setAccessible(true);
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| 78 | regQueryInfoKey = userClass.getDeclaredMethod(
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| 79 | "WindowsRegQueryInfoKey1", new Class[] { int.class });
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| 80 | regQueryInfoKey.setAccessible(true);
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| 81 | regEnumKeyEx = userClass.getDeclaredMethod("WindowsRegEnumKeyEx",
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| 82 | new Class[] { int.class, int.class, int.class });
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| 83 | regEnumKeyEx.setAccessible(true);
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| 84 | regCreateKeyEx = userClass.getDeclaredMethod(
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| 85 | "WindowsRegCreateKeyEx", new Class[] { int.class,
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| 86 | byte[].class });
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| 87 | regCreateKeyEx.setAccessible(true);
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| 88 | regSetValueEx = userClass.getDeclaredMethod("WindowsRegSetValueEx",
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| 89 | new Class[] { int.class, byte[].class, byte[].class });
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| 90 | regSetValueEx.setAccessible(true);
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| 91 | regDeleteValue = userClass.getDeclaredMethod(
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| 92 | "WindowsRegDeleteValue", new Class[] { int.class,
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| 93 | byte[].class });
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| 94 | regDeleteValue.setAccessible(true);
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| 95 | regDeleteKey = userClass.getDeclaredMethod("WindowsRegDeleteKey",
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| 96 | new Class[] { int.class, byte[].class });
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| 97 | regDeleteKey.setAccessible(true);
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| 98 | usable = true;
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| 99 | } catch (Exception e) {
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| 100 | // e.printStackTrace();
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| 101 | }
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| 102 | }
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| 103 |
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| 104 | private WinRegistry() {
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| 105 | }
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| 106 |
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| 107 | /**
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| 108 | * Read a value from key and value name
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| 109 | *
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| 110 | * @param hkey
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| 111 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 112 | * @param key
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| 113 | * Key to access
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| 114 | * @param valueName
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| 115 | * Name of value to read
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| 116 | * @param wow64
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| 117 | * 0 for standard registry access (32-bits for 32-bit app,
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| 118 | * 64-bits for 64-bits app) or KEY_WOW64_32KEY to force access to
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| 119 | * 32-bit registry view, or KEY_WOW64_64KEY to force access to
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| 120 | * 64-bit registry view
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| 121 | * @return the value
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| 122 | * @throws Exception
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| 123 | * If registry access impossible
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| 124 | * @throws IllegalArgumentException
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| 125 | * On illegal arguments
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| 126 | * @throws IllegalAccessException
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| 127 | * On illegal access
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| 128 | * @throws InvocationTargetException
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| 129 | * On reflection problems
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| 130 | */
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| 131 | public static String readString(int hkey, String key, String valueName,
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| 132 | int wow64) throws Exception, IllegalArgumentException,
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| 133 | IllegalAccessException, InvocationTargetException {
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| 134 | if (!usable)
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| 135 | throw new Exception(
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| 136 | "Registry access not supported (not a Windows OS?).");
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| 137 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 138 | return readString(systemRoot, hkey, key, valueName, wow64);
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| 139 | } else if (hkey == HKEY_CURRENT_USER) {
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| 140 | return readString(userRoot, hkey, key, valueName, wow64);
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| 141 | } else {
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| 142 | throw new IllegalArgumentException("hkey=" + hkey);
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| 143 | }
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| 144 | }
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| 145 |
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| 146 | /**
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| 147 | * Read value(s) and value name(s) form given key
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| 148 | *
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| 149 | * @param hkey
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| 150 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 151 | * @param key
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| 152 | * Key to access
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| 153 | * @param wow64
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| 154 | * 0 for standard registry access (32-bits for 32-bit app,
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| 155 | * 64-bits for 64-bits app) or KEY_WOW64_32KEY to force access to
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| 156 | * 32-bit registry view, or KEY_WOW64_64KEY to force access to
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| 157 | * 64-bit registry view
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| 158 | * @return the value name(s) plus the value(s)
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| 159 | * @throws Exception
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| 160 | * If registry access impossible
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| 161 | * @throws IllegalArgumentException
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| 162 | * On illegal arguments
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| 163 | * @throws IllegalAccessException
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| 164 | * On illegal access
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| 165 | * @throws InvocationTargetException
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| 166 | * On reflection problems
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| 167 | */
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| 168 | public static Map<String, String> readStringValues(int hkey, String key,
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| 169 | int wow64) throws Exception, IllegalArgumentException,
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| 170 | IllegalAccessException, InvocationTargetException {
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| 171 | if (!usable)
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| 172 | throw new Exception(
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| 173 | "Registry access not supported (not a Windows OS?).");
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| 174 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 175 | return readStringValues(systemRoot, hkey, key, wow64);
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| 176 | } else if (hkey == HKEY_CURRENT_USER) {
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| 177 | return readStringValues(userRoot, hkey, key, wow64);
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| 178 | } else {
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| 179 | throw new IllegalArgumentException("hkey=" + hkey);
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| 180 | }
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| 181 | }
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| 182 |
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| 183 | /**
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| 184 | * Read the value name(s) from a given key
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| 185 | *
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| 186 | * @param hkey
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| 187 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 188 | * @param key
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| 189 | * Key to access
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| 190 | * @param wow64
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| 191 | * 0 for standard registry access (32-bits for 32-bit app,
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| 192 | * 64-bits for 64-bits app) or KEY_WOW64_32KEY to force access to
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| 193 | * 32-bit registry view, or KEY_WOW64_64KEY to force access to
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| 194 | * 64-bit registry view
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| 195 | * @return the value name(s)
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| 196 | * @throws Exception
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| 197 | * If registry access impossible
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| 198 | * @throws IllegalArgumentException
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| 199 | * On illegal arguments
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| 200 | * @throws IllegalAccessException
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| 201 | * On illegal access
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| 202 | * @throws InvocationTargetException
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| 203 | * On reflection problems
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| 204 | */
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| 205 | public static List<String> readStringSubKeys(int hkey, String key, int wow64)
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| 206 | throws Exception, IllegalArgumentException, IllegalAccessException,
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| 207 | InvocationTargetException {
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| 208 | if (!usable)
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| 209 | throw new Exception(
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| 210 | "Registry access not supported (not a Windows OS?).");
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| 211 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 212 | return readStringSubKeys(systemRoot, hkey, key, wow64);
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| 213 | } else if (hkey == HKEY_CURRENT_USER) {
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| 214 | return readStringSubKeys(userRoot, hkey, key, wow64);
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| 215 | } else {
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| 216 | throw new IllegalArgumentException("hkey=" + hkey);
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| 217 | }
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| 218 | }
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| 219 |
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| 220 | /**
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| 221 | * Create a key
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| 222 | *
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| 223 | * @param hkey
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| 224 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 225 | * @param key
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| 226 | * Key to access
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| 227 | * @throws Exception
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| 228 | * If registry access impossible
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| 229 | * @throws IllegalArgumentException
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| 230 | * On illegal arguments
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| 231 | * @throws IllegalAccessException
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| 232 | * On illegal access
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| 233 | * @throws InvocationTargetException
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| 234 | * On reflection problems
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| 235 | */
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| 236 | public static void createKey(int hkey, String key) throws Exception,
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| 237 | IllegalArgumentException, IllegalAccessException,
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| 238 | InvocationTargetException {
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| 239 | int[] ret;
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| 240 | if (!usable)
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| 241 | throw new Exception(
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| 242 | "Registry access not supported (not a Windows OS?).");
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| 243 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 244 | ret = createKey(systemRoot, hkey, key);
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| 245 | regCloseKey
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| 246 | .invoke(systemRoot, new Object[] { new Integer(ret[0]) });
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| 247 | } else if (hkey == HKEY_CURRENT_USER) {
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| 248 | ret = createKey(userRoot, hkey, key);
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| 249 | regCloseKey.invoke(userRoot, new Object[] { new Integer(ret[0]) });
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| 250 | } else {
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| 251 | throw new IllegalArgumentException("hkey=" + hkey);
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| 252 | }
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| 253 | if (ret[1] != REG_SUCCESS) {
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| 254 | throw new IllegalArgumentException("rc=" + ret[1] + " key=" + key);
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| 255 | }
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| 256 | }
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| 257 |
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| 258 | /**
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| 259 | * Write a value in a given key/value name
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| 260 | *
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| 261 | * @param hkey
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| 262 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 263 | * @param key
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| 264 | * Key to access
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| 265 | * @param valueName
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| 266 | * Name of value to write to
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| 267 | * @param value
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| 268 | * String to write
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| 269 | * @param wow64
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| 270 | * 0 for standard registry access (32-bits for 32-bit app,
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| 271 | * 64-bits for 64-bits app) or KEY_WOW64_32KEY to force access to
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| 272 | * 32-bit registry view, or KEY_WOW64_64KEY to force access to
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| 273 | * 64-bit registry view
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| 274 | * @throws Exception
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| 275 | * If registry access impossible
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| 276 | * @throws IllegalArgumentException
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| 277 | * On illegal arguments
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| 278 | * @throws IllegalAccessException
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| 279 | * On illegal access
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| 280 | * @throws InvocationTargetException
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| 281 | * On reflection problems
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| 282 | */
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| 283 | public static void writeStringValue(int hkey, String key, String valueName,
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| 284 | String value, int wow64) throws Exception,
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| 285 | IllegalArgumentException, IllegalAccessException,
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| 286 | InvocationTargetException {
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| 287 | if (!usable)
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| 288 | throw new Exception(
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| 289 | "Registry access not supported (not a Windows OS?).");
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| 290 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 291 | writeStringValue(systemRoot, hkey, key, valueName, value, wow64);
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| 292 | } else if (hkey == HKEY_CURRENT_USER) {
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| 293 | writeStringValue(userRoot, hkey, key, valueName, value, wow64);
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| 294 | } else {
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| 295 | throw new IllegalArgumentException("hkey=" + hkey);
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| 296 | }
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| 297 | }
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| 298 |
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| 299 | /**
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| 300 | * Delete a given key
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| 301 | *
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| 302 | * @param hkey
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| 303 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 304 | * @param key
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| 305 | * Key to delete
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| 306 | * @throws Exception
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| 307 | * If registry access impossible
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| 308 | * @throws IllegalArgumentException
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| 309 | * On illegal arguments
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| 310 | * @throws IllegalAccessException
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| 311 | * On illegal access
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| 312 | * @throws InvocationTargetException
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| 313 | * On reflection problems
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| 314 | */
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| 315 | public static void deleteKey(int hkey, String key) throws Exception,
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| 316 | IllegalArgumentException, IllegalAccessException,
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| 317 | InvocationTargetException {
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| 318 | int rc = -1;
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| 319 | if (!usable)
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| 320 | throw new Exception(
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| 321 | "Registry access not supported (not a Windows OS?).");
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| 322 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 323 | rc = deleteKey(systemRoot, hkey, key);
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| 324 | } else if (hkey == HKEY_CURRENT_USER) {
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| 325 | rc = deleteKey(userRoot, hkey, key);
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| 326 | }
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| 327 | if (rc != REG_SUCCESS) {
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| 328 | throw new IllegalArgumentException("rc=" + rc + " key=" + key);
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| 329 | }
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| 330 | }
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| 331 |
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| 332 | /**
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| 333 | * delete a value from a given key/value name
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| 334 | *
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| 335 | * @param hkey
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| 336 | * HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
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| 337 | * @param key
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| 338 | * Key to access
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| 339 | * @param value
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| 340 | * Name of value to delete
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| 341 | * @param wow64
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| 342 | * 0 for standard registry access (32-bits for 32-bit app,
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| 343 | * 64-bits for 64-bits app) or KEY_WOW64_32KEY to force access to
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| 344 | * 32-bit registry view, or KEY_WOW64_64KEY to force access to
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| 345 | * 64-bit registry view
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| 346 | * @throws Exception
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| 347 | * If registry access impossible
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| 348 | * @throws IllegalArgumentException
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| 349 | * On illegal arguments
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| 350 | * @throws IllegalAccessException
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| 351 | * On illegal access
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| 352 | * @throws InvocationTargetException
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| 353 | * On reflection problems
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| 354 | */
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| 355 | public static void deleteValue(int hkey, String key, String value, int wow64)
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| 356 | throws Exception, IllegalArgumentException, IllegalAccessException,
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| 357 | InvocationTargetException {
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| 358 | if (!usable)
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| 359 | throw new Exception(
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| 360 | "Registry access not supported (not a Windows OS?).");
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| 361 | int rc = -1;
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| 362 | if (hkey == HKEY_LOCAL_MACHINE) {
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| 363 | rc = deleteValue(systemRoot, hkey, key, value, wow64);
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| 364 | } else if (hkey == HKEY_CURRENT_USER) {
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| 365 | rc = deleteValue(userRoot, hkey, key, value, wow64);
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| 366 | }
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| 367 | if (rc != REG_SUCCESS) {
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| 368 | throw new IllegalArgumentException("rc=" + rc + " key=" + key
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| 369 | + " value=" + value);
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| 370 | }
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| 371 | }
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| 372 |
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| 373 | // ========================================================================
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| 374 | private static int deleteValue(Preferences root, int hkey, String key,
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| 375 | String value, int wow64) throws IllegalArgumentException,
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| 376 | IllegalAccessException, InvocationTargetException {
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| 377 | int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
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| 378 | new Integer(hkey), toCstr(key),
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| 379 | new Integer(KEY_ALL_ACCESS | wow64) });
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| 380 | if (handles[1] != REG_SUCCESS) {
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| 381 | return handles[1]; // can be REG_NOTFOUND, REG_ACCESSDENIED
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| 382 | }
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| 383 | int rc = ((Integer) regDeleteValue.invoke(root, new Object[] {
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| 384 | new Integer(handles[0]), toCstr(value) })).intValue();
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| 385 | regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
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| 386 | return rc;
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| 387 | }
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| 388 |
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| 389 | // ========================================================================
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| 390 | private static int deleteKey(Preferences root, int hkey, String key)
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| 391 | throws IllegalArgumentException, IllegalAccessException,
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| 392 | InvocationTargetException {
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| 393 | int rc = ((Integer) regDeleteKey.invoke(root, new Object[] {
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| 394 | new Integer(hkey), toCstr(key) })).intValue();
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| 395 | return rc; // can REG_NOTFOUND, REG_ACCESSDENIED, REG_SUCCESS
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| 396 | }
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| 397 |
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| 398 | // ========================================================================
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| 399 | private static String readString(Preferences root, int hkey, String key,
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| 400 | String value, int wow64) throws IllegalArgumentException,
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| 401 | IllegalAccessException, InvocationTargetException {
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| 402 | int[] handles = (int[]) regOpenKey
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| 403 | .invoke(root, new Object[] { new Integer(hkey), toCstr(key),
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| 404 | new Integer(KEY_READ | wow64) });
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| 405 | if (handles[1] != REG_SUCCESS) {
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| 406 | return null;
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| 407 | }
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| 408 | byte[] valb = (byte[]) regQueryValueEx.invoke(root, new Object[] {
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| 409 | new Integer(handles[0]), toCstr(value) });
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| 410 | regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
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| 411 | return (valb != null ? new String(valb).trim() : null);
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| 412 | }
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| 413 |
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| 414 | // ========================================================================
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| 415 | private static Map<String, String> readStringValues(Preferences root,
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| 416 | int hkey, String key, int wow64) throws Exception,
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| 417 | IllegalArgumentException, IllegalAccessException,
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| 418 | InvocationTargetException {
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| 419 | HashMap<String, String> results = new HashMap<String, String>();
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| 420 | int[] handles = (int[]) regOpenKey
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| 421 | .invoke(root, new Object[] { new Integer(hkey), toCstr(key),
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| 422 | new Integer(KEY_READ | wow64) });
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| 423 | if (handles[1] != REG_SUCCESS) {
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| 424 | return null;
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| 425 | }
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| 426 | int[] info = (int[]) regQueryInfoKey.invoke(root,
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| 427 | new Object[] { new Integer(handles[0]) });
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| 428 |
|
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| 429 | int count = info[2]; // count
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| 430 | int maxlen = info[4]; // value length max
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|---|
| 431 | for (int index = 0; index < count; index++) {
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| 432 | byte[] name = (byte[]) regEnumValue.invoke(root, new Object[] {
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| 433 | new Integer(handles[0]), new Integer(index),
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| 434 | new Integer(maxlen + 1) });
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| 435 | String value = readString(hkey, key, new String(name), wow64);
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| 436 | results.put(new String(name).trim(), value);
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| 437 | }
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|---|
| 438 | regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
|
|---|
| 439 | return results;
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | // ========================================================================
|
|---|
| 443 | private static List<String> readStringSubKeys(Preferences root, int hkey,
|
|---|
| 444 | String key, int wow64) throws IllegalArgumentException,
|
|---|
| 445 | IllegalAccessException, InvocationTargetException {
|
|---|
| 446 | List<String> results = new ArrayList<String>();
|
|---|
| 447 | int[] handles = (int[]) regOpenKey
|
|---|
| 448 | .invoke(root, new Object[] { new Integer(hkey), toCstr(key),
|
|---|
| 449 | new Integer(KEY_READ | wow64) });
|
|---|
| 450 | if (handles[1] != REG_SUCCESS) {
|
|---|
| 451 | return null;
|
|---|
| 452 | }
|
|---|
| 453 | int[] info = (int[]) regQueryInfoKey.invoke(root,
|
|---|
| 454 | new Object[] { new Integer(handles[0]) });
|
|---|
| 455 |
|
|---|
| 456 | int count = info[0]; // Fix: info[2] was being used here with wrong
|
|---|
| 457 | // results. Suggested by davenpcj, confirmed by
|
|---|
| 458 | // Petrucio
|
|---|
| 459 | int maxlen = info[3]; // value length max
|
|---|
| 460 | for (int index = 0; index < count; index++) {
|
|---|
| 461 | byte[] name = (byte[]) regEnumKeyEx.invoke(root, new Object[] {
|
|---|
| 462 | new Integer(handles[0]), new Integer(index),
|
|---|
| 463 | new Integer(maxlen + 1) });
|
|---|
| 464 | results.add(new String(name).trim());
|
|---|
| 465 | }
|
|---|
| 466 | regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
|
|---|
| 467 | return results;
|
|---|
| 468 | }
|
|---|
| 469 |
|
|---|
| 470 | // ========================================================================
|
|---|
| 471 | private static int[] createKey(Preferences root, int hkey, String key)
|
|---|
| 472 | throws IllegalArgumentException, IllegalAccessException,
|
|---|
| 473 | InvocationTargetException {
|
|---|
| 474 | return (int[]) regCreateKeyEx.invoke(root, new Object[] {
|
|---|
| 475 | new Integer(hkey), toCstr(key) });
|
|---|
| 476 | }
|
|---|
| 477 |
|
|---|
| 478 | // ========================================================================
|
|---|
| 479 | private static void writeStringValue(Preferences root, int hkey,
|
|---|
| 480 | String key, String valueName, String value, int wow64)
|
|---|
| 481 | throws IllegalArgumentException, IllegalAccessException,
|
|---|
| 482 | InvocationTargetException {
|
|---|
| 483 | int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
|
|---|
| 484 | new Integer(hkey), toCstr(key),
|
|---|
| 485 | new Integer(KEY_ALL_ACCESS | wow64) });
|
|---|
| 486 | regSetValueEx.invoke(root, new Object[] { new Integer(handles[0]),
|
|---|
| 487 | toCstr(valueName), toCstr(value) });
|
|---|
| 488 | regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
|
|---|
| 489 | }
|
|---|
| 490 |
|
|---|
| 491 | // ========================================================================
|
|---|
| 492 | // utility
|
|---|
| 493 | private static byte[] toCstr(String str) {
|
|---|
| 494 | byte[] result = new byte[str.length() + 1];
|
|---|
| 495 |
|
|---|
| 496 | for (int i = 0; i < str.length(); i++) {
|
|---|
| 497 | result[i] = (byte) str.charAt(i);
|
|---|
| 498 | }
|
|---|
| 499 | result[str.length()] = 0;
|
|---|
| 500 | return result;
|
|---|
| 501 | }
|
|---|
| 502 | }
|
|---|
