Initial commit (Tested from J_8 to J_21)

.gitignore

@@ -0,0 +1,39 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

build.gradle

@@ -0,0 +1,15 @@
+plugins {
+    id 'java'
+    id 'maven-publish'
+}
+
+group = 'de.tudbut'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+}
+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Fri Jun 28 19:18:18 CEST 2024
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1,2 @@
+rootProject.name = 'darkreflection'
+

src/main/java/de/tudbut/darkreflection/DarkAccessibleObject.java

@@ -0,0 +1,32 @@
+package de.tudbut.darkreflection;
+
+import java.lang.reflect.AccessibleObject;
+
+import static de.tudbut.darkreflection.UnsafeProvider.unsafe;
+
+public class DarkAccessibleObject {
+    public static void makeAccessible(AccessibleObject object) {
+        if(object.isAccessible())
+            return;
+        try {
+            unsafe.putBoolean(object, unsafe.objectFieldOffset(AccessibleObject.class.getDeclaredField("override")), true);
+            if(!object.isAccessible())
+                throw new IllegalAccessException();
+        } catch (Throwable basicOverrideError) {
+            try {
+                unsafe.putBoolean(object, unsafe.objectFieldOffset(FakeAccessibleObject.class.getDeclaredFields()[0]), true);
+                if(!object.isAccessible())
+                    throw new IllegalAccessException();
+            } catch (Throwable adaptedOverrideError) {
+                basicOverrideError.printStackTrace();
+                adaptedOverrideError.printStackTrace();
+                throw new AssertionError("This JVM does not support changing the override");
+            }
+        }
+    }
+
+    @SuppressWarnings("unused")
+    private static class FakeAccessibleObject {
+        boolean override;
+    }
+}

src/main/java/de/tudbut/darkreflection/DarkClass.java

@@ -0,0 +1,11 @@
+package de.tudbut.darkreflection;
+
+import de.tudbut.darkreflection.classes.IClassAccess;
+
+// i have made it my life mission to make reflection unrestricted. i will not let jdk.internal.reflect.Reflection stop me.
+public class DarkClass {
+
+    public static <T> IClassAccess<T> obtainAccess(Class<T> clazz) {
+        return Strategy.classStrategy.instance(clazz);
+    }
+}

src/main/java/de/tudbut/darkreflection/DarkField.java

@@ -0,0 +1,28 @@
+package de.tudbut.darkreflection;
+
+import de.tudbut.darkreflection.fields.IFieldAccess;
+
+import java.lang.reflect.Field;
+import java.util.Arrays;
+
+public class DarkField {
+
+    public static <T> IFieldAccess<T> obtainByField(Field f) {
+        return Strategy.reflectedFieldStrategy.instance(f);
+    }
+
+    public static <T> IFieldAccess<T> obtainByName(Class<?> owner, String name, boolean isStatic, Class<? extends T> type) {
+        return Strategy.fieldByNameStrategy.instance(owner, name, isStatic, type);
+    }
+
+    public static Field nameToField(Class<?> owner, String name) {
+        try {
+            // try the basic strategy first - it works often enough for this to be a speed advantage.
+            // this also prevents a StackOverflowError if we're using a ReflectionDataClass with a
+            // BasicOffsetGetter (like on some non-openjdk jvms)
+            return owner.getDeclaredField(name);
+        } catch (NoSuchFieldException e) {
+            return Arrays.stream(Strategy.classStrategy.instance(owner).getDeclaredFields()).filter(x -> x.getName().equals(name)).findAny().orElse(null);
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/DarkMethod.java

@@ -0,0 +1,25 @@
+package de.tudbut.darkreflection;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+
+public class DarkMethod {
+
+    public static Method instance(Class<?> owner, String name, Class<?>... args) {
+        try {
+            return owner.getDeclaredMethod(name, args);
+        } catch (NoSuchMethodException e) {
+            return Arrays.stream(DarkClass.obtainAccess(owner).getDeclaredMethods()).filter(x -> x.getName().equals(name) && Arrays.equals(x.getParameterTypes(), args)).findAny().orElse(null);
+        }
+    }
+
+    public static <T> T invoke(Method m, Object owner, Object... args) throws InvocationTargetException {
+        DarkAccessibleObject.makeAccessible(m);
+        try {
+            return (T) m.invoke(owner, args);
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/InvalidStrategyException.java

@@ -0,0 +1,8 @@
+package de.tudbut.darkreflection;
+
+public class InvalidStrategyException extends RuntimeException {
+    public InvalidStrategyException() {}
+    public InvalidStrategyException(Throwable e) {
+        super(e);
+    }
+}

src/main/java/de/tudbut/darkreflection/Strategy.java

@@ -0,0 +1,149 @@
+package de.tudbut.darkreflection;
+
+import de.tudbut.darkreflection.classes.*;
+import de.tudbut.darkreflection.fields.AdaptedReflectionField;
+import de.tudbut.darkreflection.fields.BasicReflectionField;
+import de.tudbut.darkreflection.fields.IFieldAccess;
+import de.tudbut.darkreflection.fields.UnsafeField;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Field;
+import java.util.Arrays;
+
+import static de.tudbut.darkreflection.UnsafeProvider.offsetGetter;
+
+
+// which strategy depends on which?
+// FReflectionDataClass -> reflectionFieldStrategy
+// FieldByName -> reflectedFieldStrategy
+// FieldByName -> classStrategy
+
+public class Strategy {
+    public static ClassStrategy classStrategy = ClassStrategy.Basic;
+    public static ReflectedFieldStrategy reflectedFieldStrategy = ReflectedFieldStrategy.Basic;
+    public static FieldByNameStrategy fieldByNameStrategy = FieldByNameStrategy.GetDeclaredField;
+
+    public static void detect(boolean log) {
+        for (ReflectedFieldStrategy value : ReflectedFieldStrategy.values()) {
+            try {
+                String s = "hi";
+                IFieldAccess<Object> field = value.instance(String.class.getDeclaredField("value"));
+                field.set(s, field.get("hi!"));
+                //noinspection ConstantValue
+                if(s.equals("hi!")) {
+                    if(log)
+                        System.out.println("Found working strategy for reflected fields: " + value.name());
+                    reflectedFieldStrategy = value;
+                    break;
+                }
+            } catch (NoSuchFieldException e) {
+                throw new Error("Please update DarkReflection or open an issue on it.", e);
+            } catch (InvalidStrategyException ignore) {}
+        }
+
+        for (ClassStrategy value : ClassStrategy.values()) {
+            try {
+                if(value.instance(AccessibleObject.class).getDeclaredFields().length >= 1) {
+                    if(log)
+                        System.out.println("Found working strategy for classes: " + value.name());
+                    classStrategy = value;
+                    break;
+                }
+            } catch (InvalidStrategyException e) {
+                e.printStackTrace();
+            }
+        }
+
+        for (FieldByNameStrategy value : FieldByNameStrategy.values()) {
+            try {
+                if(value.instance(AccessibleObject.class, "override", false, boolean.class) != null) {
+                    if(log)
+                        System.out.println("Found working strategy for fields by name: " + value.name());
+                    fieldByNameStrategy = value;
+                    break;
+                }
+            } catch (InvalidStrategyException ignore) {}
+        }
+    }
+
+    @SuppressWarnings("rawtypes")
+    public enum ClassStrategy {
+        Basic(BasicClass.class),
+        NativeGet(NativeGetClass.class),
+
+        ;
+        private final Class<? extends IClassAccess> backend;
+
+        ClassStrategy(Class<? extends IClassAccess> backend) {
+            this.backend = backend;
+        }
+
+        public <T> IClassAccess<T> instance(Class<T> clazz) {
+            try {
+                return (IClassAccess<T>) backend.getConstructor(Class.class).newInstance(clazz);
+            } catch (Exception e) {
+                throw new InvalidStrategyException(e);
+            }
+        }
+    }
+    @SuppressWarnings("rawtypes")
+    public enum ReflectedFieldStrategy {
+        Basic(BasicReflectionField.class),
+        Adapted(AdaptedReflectionField.class),
+        Unsafe(UnsafeField.class),
+
+        ;
+        private final Class<? extends IFieldAccess> backend;
+
+        ReflectedFieldStrategy(Class<? extends IFieldAccess> backend) {
+            this.backend = backend;
+        }
+
+        public <T> IFieldAccess<T> instance(Field f) {
+            try {
+                return (IFieldAccess<T>) backend.getConstructor(Field.class).newInstance(f);
+            } catch (Exception e) {
+                throw new InvalidStrategyException(e);
+            }
+        }
+    }
+    @SuppressWarnings("rawtypes")
+    public enum FieldByNameStrategy {
+        GetDeclaredField((owner, field, isStatic, type) -> {
+            try {
+                return reflectedFieldStrategy.instance(owner.getDeclaredField(field));
+            } catch (NoSuchFieldException e) {
+                return null;
+            }
+        }),
+        DarkReflection((owner, field, isStatic, type) -> {
+            try {
+                return reflectedFieldStrategy.instance(Arrays.stream(classStrategy.instance(owner).getDeclaredFields()).filter(x -> x.getName().equals(field)).findAny().orElseThrow(() -> new NoSuchFieldException(field)));
+            } catch (NoSuchFieldException e) {
+                return null;
+            }
+        }),
+        Unsafe((owner, field, isStatic, type) -> new UnsafeField<>(
+                isStatic ? offsetGetter.staticFieldBase(owner, field) : null,
+                isStatic ? offsetGetter.staticFieldOffset(owner, field) : offsetGetter.objectFieldOffset(owner, field), type)),
+
+        ;
+        private final FieldByNameStrategyProvider backend;
+
+        FieldByNameStrategy(FieldByNameStrategyProvider backend) {
+            this.backend = backend;
+        }
+
+        public <T> IFieldAccess<T> instance(Class<?> owner, String field, boolean isStatic, Class<? extends T> type) {
+            try {
+                return (IFieldAccess<T>) backend.get(owner, field, isStatic, type);
+            } catch (Exception e) {
+                throw new InvalidStrategyException(e);
+            }
+        }
+
+        private interface FieldByNameStrategyProvider {
+            IFieldAccess get(Class<?> owner, String field, boolean isStatic, Class<?> type);
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/UnsafeProvider.java

@@ -0,0 +1,34 @@
+package de.tudbut.darkreflection;
+
+import de.tudbut.darkreflection.unsafe.BasicOffsetGetter;
+import de.tudbut.darkreflection.unsafe.IOffsetGetter;
+import de.tudbut.darkreflection.unsafe.InternalUnsafeOffsetGetter;
+import sun.misc.Unsafe;
+
+import java.lang.reflect.Field;
+
+public class UnsafeProvider {
+
+    public static final Unsafe unsafe;
+    static {
+        try {
+            Field f = Unsafe.class.getDeclaredField("theUnsafe");
+            f.setAccessible(true);
+            unsafe = (Unsafe) f.get(null);
+        } catch (Throwable e) {
+            throw new Error(e); // Don't recover.
+        }
+    }
+
+    public static IOffsetGetter offsetGetter;
+    static {
+        try {
+            Class<?> c = Class.forName("jdk.internal.misc.Unsafe");
+            c.getMethod("objectFieldOffset", Class.class, String.class);
+            Object o = DarkMethod.invoke(c.getMethod("getUnsafe"), null);
+            offsetGetter = new InternalUnsafeOffsetGetter(c, o);
+        } catch (Throwable e) {
+            offsetGetter = new BasicOffsetGetter();
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/classes/BasicClass.java

@@ -0,0 +1,32 @@
+package de.tudbut.darkreflection.classes;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public class BasicClass<T> implements IClassAccess<T> {
+    private final Class<T> clazz;
+    public BasicClass(Class<T> clazz) {
+        this.clazz = clazz;
+    }
+
+    @Override
+    public Field[] getDeclaredFields() {
+        return clazz.getDeclaredFields();
+    }
+
+    @Override
+    public Method[] getDeclaredMethods() {
+        return clazz.getDeclaredMethods();
+    }
+
+    @Override
+    public Constructor<T>[] getDeclaredConstructors() {
+        return (Constructor<T>[]) clazz.getDeclaredConstructors();
+    }
+
+    @Override
+    public Class<T> getAccessedClass() {
+        return clazz;
+    }
+}

src/main/java/de/tudbut/darkreflection/classes/IClassAccess.java

@@ -0,0 +1,12 @@
+package de.tudbut.darkreflection.classes;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public interface IClassAccess<T> {
+    Field[] getDeclaredFields();
+    Method[] getDeclaredMethods();
+    Constructor<T>[] getDeclaredConstructors();
+    Class<T> getAccessedClass();
+}

src/main/java/de/tudbut/darkreflection/classes/NativeGetClass.java

@@ -0,0 +1,56 @@
+package de.tudbut.darkreflection.classes;
+
+import de.tudbut.darkreflection.DarkMethod;
+import de.tudbut.darkreflection.InvalidStrategyException;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class NativeGetClass<T> implements IClassAccess<T> {
+    private final Class<T> clazz;
+    private final Method getDeclaredFields0, getDeclaredMethods0, getDeclaredConstructors0;
+    public NativeGetClass(Class<T> clazz) {
+        this.clazz = clazz;
+        try {
+            getDeclaredFields0 = Class.class.getDeclaredMethod("getDeclaredFields0", boolean.class);
+            getDeclaredMethods0 = Class.class.getDeclaredMethod("getDeclaredMethods0", boolean.class);
+            getDeclaredConstructors0 = Class.class.getDeclaredMethod("getDeclaredFields0", boolean.class);
+        } catch (NoSuchMethodException e) {
+            throw new InvalidStrategyException(e);
+        }
+    }
+
+    @Override
+    public Field[] getDeclaredFields() {
+        try {
+            return DarkMethod.invoke(getDeclaredFields0, clazz, false);
+        } catch (InvocationTargetException e) {
+            throw new InvalidStrategyException(e);
+        }
+    }
+
+    @Override
+    public Method[] getDeclaredMethods() {
+        try {
+            return DarkMethod.invoke(getDeclaredMethods0, clazz, false);
+        } catch (InvocationTargetException e) {
+            throw new InvalidStrategyException(e);
+        }
+    }
+
+    @Override
+    public Constructor<T>[] getDeclaredConstructors() {
+        try {
+            return DarkMethod.invoke(getDeclaredConstructors0, clazz, false);
+        } catch (InvocationTargetException e) {
+            throw new InvalidStrategyException(e);
+        }
+    }
+
+    @Override
+    public Class<T> getAccessedClass() {
+        return clazz;
+    }
+}

src/main/java/de/tudbut/darkreflection/fields/AdaptedReflectionField.java

@@ -0,0 +1,17 @@
+package de.tudbut.darkreflection.fields;
+
+import de.tudbut.darkreflection.DarkAccessibleObject;
+
+import java.lang.reflect.Field;
+
+public class AdaptedReflectionField<T> extends ReflectionField<T> {
+    public AdaptedReflectionField(Field backend) {
+        super(backend);
+    }
+
+    @Override
+    protected void makeAccessible() {
+        DarkAccessibleObject.makeAccessible(backend);
+    }
+
+}

src/main/java/de/tudbut/darkreflection/fields/BasicReflectionField.java

@@ -0,0 +1,22 @@
+package de.tudbut.darkreflection.fields;
+
+import de.tudbut.darkreflection.InvalidStrategyException;
+
+import java.lang.reflect.Field;
+
+public class BasicReflectionField<T> extends ReflectionField<T> {
+    public BasicReflectionField(Field backend) {
+        super(backend);
+    }
+
+    @Override
+    protected void makeAccessible() {
+        try {
+            backend.setAccessible(true);
+            if(!backend.isAccessible())
+                throw new IllegalAccessException();
+        } catch (Exception e) {
+            throw new InvalidStrategyException();
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/fields/IFieldAccess.java

@@ -0,0 +1,6 @@
+package de.tudbut.darkreflection.fields;
+
+public interface IFieldAccess<T> {
+    T get(Object owner);
+    void set(Object owner, T item);
+}

src/main/java/de/tudbut/darkreflection/fields/ReflectionField.java

@@ -0,0 +1,32 @@
+package de.tudbut.darkreflection.fields;
+
+import java.lang.reflect.Field;
+
+public abstract class ReflectionField<T> implements IFieldAccess<T> {
+    protected final Field backend;
+
+    public ReflectionField(Field backend) {
+        this.backend = backend;
+        makeAccessible();
+    }
+
+    protected abstract void makeAccessible();
+
+    @Override
+    public T get(Object owner) {
+        try {
+            return (T) backend.get(owner);
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void set(Object owner, T item) {
+        try {
+            backend.set(owner, item);
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/main/java/de/tudbut/darkreflection/fields/UnsafeField.java

@@ -0,0 +1,76 @@
+package de.tudbut.darkreflection.fields;
+
+import java.lang.reflect.Field;
+
+import static de.tudbut.darkreflection.UnsafeProvider.unsafe;
+
+public class UnsafeField<T> implements IFieldAccess<T> {
+    protected final Class<?> type;
+    protected Field backend;
+    protected Object o;
+    protected long offset = -1;
+
+    public UnsafeField(Field field) {
+        this.backend = field;
+        this.type = field.getType();
+    }
+    public UnsafeField(Object o, long offset, Class<? extends T> type) {
+        this.o = o;
+        this.offset = offset;
+        this.type = type;
+    }
+
+    @Override
+    public T get(Object owner) {
+        Object o = this.o == null ? (owner == null ? unsafe.staticFieldBase(backend) : owner) : this.o;
+        long offset = this.offset == -1 ? (owner == null ? unsafe.staticFieldOffset(backend) : unsafe.objectFieldOffset(backend)) : this.offset;
+        this.offset = offset;
+
+        if(type.isPrimitive()) {
+            if(type == int.class)
+                return (T) (Object) unsafe.getInt(o, offset);
+            if(type == boolean.class)
+                return (T) (Object) unsafe.getBoolean(o, offset);
+            if(type == byte.class)
+                return (T) (Object) unsafe.getByte(o, offset);
+            if(type == short.class)
+                return (T) (Object) unsafe.getShort(o, offset);
+            if(type == char.class)
+                return (T) (Object) unsafe.getChar(o, offset);
+            if(type == long.class)
+                return (T) (Object) unsafe.getLong(o, offset);
+            if(type == float.class)
+                return (T) (Object) unsafe.getFloat(o, offset);
+            if(type == double.class)
+                return (T) (Object) unsafe.getDouble(o, offset);
+        }
+        return (T) unsafe.getObject(o, offset);
+    }
+
+    @Override
+    public void set(Object owner, T item) {
+        Object o = this.o == null ? (owner == null ? unsafe.staticFieldBase(backend) : owner) : this.o;
+        long offset = this.offset == -1 ? (owner == null ? unsafe.staticFieldOffset(backend) : unsafe.objectFieldOffset(backend)) : this.offset;
+        this.offset = offset;
+
+        if(type.isPrimitive()) {
+            if(type == int.class)
+                unsafe.putInt(o, offset, (Integer) item);
+            else if(type == boolean.class)
+                unsafe.putBoolean(o, offset, (Boolean) item);
+            else if(type == byte.class)
+                unsafe.putByte(o, offset, (Byte) item);
+            else if(type == short.class)
+                unsafe.putShort(o, offset, (Short) item);
+            else if(type == char.class)
+                unsafe.putChar(o, offset, (Character) item);
+            else if(type == long.class)
+                unsafe.putLong(o, offset, (Long) item);
+            else if(type == float.class)
+                unsafe.putFloat(o, offset, (Float) item);
+            else if(type == double.class)
+                unsafe.putDouble(o, offset, (Double) item);
+        }
+        unsafe.putObject(o, offset, item);
+    }
+}

src/main/java/de/tudbut/darkreflection/unsafe/BasicOffsetGetter.java

@@ -0,0 +1,39 @@
+package de.tudbut.darkreflection.unsafe;
+
+import de.tudbut.darkreflection.DarkField;
+
+import java.lang.reflect.Field;
+
+import static de.tudbut.darkreflection.UnsafeProvider.unsafe;
+
+public class BasicOffsetGetter implements IOffsetGetter {
+    @Override
+    public long objectFieldOffset(Field f) {
+        return unsafe.objectFieldOffset(f);
+    }
+
+    @Override
+    public long objectFieldOffset(Class<?> clazz, String name) {
+        return unsafe.objectFieldOffset(DarkField.nameToField(clazz, name));
+    }
+
+    @Override
+    public long staticFieldOffset(Field f) {
+        return unsafe.staticFieldOffset(f);
+    }
+
+    @Override
+    public long staticFieldOffset(Class<?> clazz, String name) {
+        return unsafe.staticFieldOffset(DarkField.nameToField(clazz, name));
+    }
+
+    @Override
+    public Object staticFieldBase(Field f) {
+        return unsafe.staticFieldBase(f);
+    }
+
+    @Override
+    public Object staticFieldBase(Class<?> clazz, String name) {
+        return unsafe.staticFieldBase(DarkField.nameToField(clazz, name));
+    }
+}

src/main/java/de/tudbut/darkreflection/unsafe/IOffsetGetter.java

@@ -0,0 +1,13 @@
+package de.tudbut.darkreflection.unsafe;
+
+import java.lang.reflect.Field;
+
+public interface IOffsetGetter {
+    long objectFieldOffset(Field f);
+    long objectFieldOffset(Class<?> clazz, String name);
+    long staticFieldOffset(Field f);
+    long staticFieldOffset(Class<?> clazz, String name);
+
+    Object staticFieldBase(Field f);
+    Object staticFieldBase(Class<?> clazz, String name);
+}

src/main/java/de/tudbut/darkreflection/unsafe/InternalUnsafeOffsetGetter.java

@@ -0,0 +1,26 @@
+package de.tudbut.darkreflection.unsafe;
+
+import de.tudbut.darkreflection.DarkMethod;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class InternalUnsafeOffsetGetter extends BasicOffsetGetter {
+
+    private final Method objectFieldOffset0;
+    private final Object iUnsafe;
+
+    public InternalUnsafeOffsetGetter(Class<?> iUnsafeClass, Object iUnsafe) throws NoSuchMethodException {
+        this.objectFieldOffset0 = iUnsafeClass.getMethod("objectFieldOffset", Class.class, String.class);
+        this.iUnsafe = iUnsafe;
+    }
+
+    @Override
+    public long objectFieldOffset(Class<?> clazz, String name) {
+        try {
+            return DarkMethod.invoke(objectFieldOffset0, iUnsafe, clazz, name);
+        } catch (InvocationTargetException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/test/java/Test.java

@@ -0,0 +1,9 @@
+import de.tudbut.darkreflection.DarkField;
+import de.tudbut.darkreflection.Strategy;
+
+public class Test {
+    public static void main(String[] args) {
+        Strategy.detect(true);
+        DarkField.obtainByName(ClassLoader.class, "parent", false, ClassLoader.class).set(ClassLoader.getSystemClassLoader(), null);
+    }
+}