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package com.virjar.ratel.api.rposed;
import android.util.Log;
import com.virjar.ratel.api.RatelToolKit;
import com.virjar.ratel.api.rposed.callbacks.RC_LoadPackage;
import java.io.IOException;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
/**
* This class contains most of Xposed's central logic, such as initialization and callbacks used by
* the native side. It also includes methods to add new hooks.
*/
@SuppressWarnings("JniMissingFunction")
public final class RposedBridge {
/**
* The system class loader which can be used to locate Android framework classes.
* Application classes cannot be retrieved from it.
*/
public static final ClassLoader BOOTCLASSLOADER = RposedBridge.class.getClassLoader();
/**
* @hide
*/
public static final String TAG = "RATEL-Xposed-Bridge";
/**
* @deprecated Use {@link #getXposedVersion()} instead.
*/
@Deprecated
public static int XPOSED_BRIDGE_VERSION;
/*package*/ static boolean isZygote = true; // ed: RuntimeInit.main() tool process not supported yet
private static int runtime = 2; // ed: only support art
private static final int RUNTIME_DALVIK = 1;
private static final int RUNTIME_ART = 2;
public static boolean disableHooks = false;
// This field is set "magically" on MIUI.
/*package*/ static long BOOT_START_TIME;
private static final Object[] EMPTY_ARRAY = new Object[0];
private RposedBridge() {
}
/**
* Returns the currently installed version of the Xposed framework.
*/
public static int getXposedVersion() {
// ed: fixed value for now
return 90;
}
/**
* Writes a message to the Xposed error log.
*
* DON'T FLOOD THE LOG!!! This is only meant for error logging.
* If you want to write information/debug messages, use logcat.
*
* @param text The log message.
*/
public synchronized static void log(String text) {
Log.i(TAG, text);
}
/**
* Logs a stack trace to the Xposed error log.
*
*
DON'T FLOOD THE LOG!!! This is only meant for error logging.
* If you want to write information/debug messages, use logcat.
*
* @param t The Throwable object for the stack trace.
*/
public synchronized static void log(Throwable t) {
Log.e(TAG, Log.getStackTraceString(t));
}
/**
* Hook any method (or constructor) with the specified callback. See below for some wrappers
* that make it easier to find a method/constructor in one step.
*
* @param hookMethod The method to be hooked.
* @param callback The callback to be executed when the hooked method is called.
* @return An object that can be used to remove the hook.
* @see RposedHelpers#findAndHookMethod(String, ClassLoader, String, Object...)
* @see RposedHelpers#findAndHookMethod(Class, String, Object...)
* @see #hookAllMethods
* @see RposedHelpers#findAndHookConstructor(String, ClassLoader, Object...)
* @see RposedHelpers#findAndHookConstructor(Class, Object...)
* @see #hookAllConstructors
*/
public static RC_MethodHook.Unhook hookMethod(Member hookMethod, RC_MethodHook callback) {
RatelToolKit.usedHookProvider.hookMethod(hookMethod, callback);
return callback.new Unhook(hookMethod);
}
/**
* Removes the callback for a hooked method/constructor.
*
* @param hookMethod The method for which the callback should be removed.
* @param callback The reference to the callback as specified in {@link #hookMethod}.
* @deprecated Use {@link RC_MethodHook.Unhook#unhook} instead. An instance of the {@code Unhook}
* class is returned when you hook the method.
*/
@Deprecated
public static void unhookMethod(Member hookMethod, RC_MethodHook callback) {
RatelToolKit.usedHookProvider.unhookMethod(hookMethod, callback);
}
/**
* Hooks all methods with a certain name that were declared in the specified class. Inherited
* methods and constructors are not considered. For constructors, use
* {@link #hookAllConstructors} instead.
*
* @param hookClass The class to check for declared methods.
* @param methodName The name of the method(s) to hook.
* @param callback The callback to be executed when the hooked methods are called.
* @return A set containing one object for each found method which can be used to unhook it.
*/
@SuppressWarnings("UnusedReturnValue")
public static Set hookAllMethods(Class hookClass, String methodName, RC_MethodHook callback) {
Set unhooks = new HashSet<>();
for (Member method : hookClass.getDeclaredMethods())
if (method.getName().equals(methodName))
unhooks.add(hookMethod(method, callback));
return unhooks;
}
@SuppressWarnings("UnusedReturnValue")
public static Set hookAllMethodsSafe(Class hookClass, String methodName, RC_MethodHook callback) {
try {
return hookAllMethods(hookClass, methodName, callback);
} catch (Throwable throwable) {
Log.w("RATEL", "hookAllMethodsSafe exception", throwable);
//TODO
return null;
}
}
/**
* Hook all constructors of the specified class.
*
* @param hookClass The class to check for constructors.
* @param callback The callback to be executed when the hooked constructors are called.
* @return A set containing one object for each found constructor which can be used to unhook it.
*/
@SuppressWarnings("UnusedReturnValue")
public static Set hookAllConstructors(Class hookClass, RC_MethodHook callback) {
Set unhooks = new HashSet<>();
for (Member constructor : hookClass.getDeclaredConstructors())
unhooks.add(hookMethod(constructor, callback));
return unhooks;
}
private static Object invokeOriginalMethodNative(Member method,
Object thisObject, Object[] args)
throws Throwable {
return RatelToolKit.usedHookProvider.invokeOriginalMethod(method, thisObject, args);
}
/**
* Basically the same as {@link Method#invoke}, but calls the original method
* as it was before the interception by Xposed. Also, access permissions are not checked.
*
* There are very few cases where this method is needed. A common mistake is
* to replace a method and then invoke the original one based on dynamic conditions. This
* creates overhead and skips further hooks by other modules. Instead, just hook (don't replace)
* the method and call {@code param.setResult(null)} in {@link RC_MethodHook#beforeHookedMethod}
* if the original method should be skipped.
*
* @param method The method to be called.
* @param thisObject For non-static calls, the "this" pointer, otherwise {@code null}.
* @param args Arguments for the method call as Object[] array.
* @return The result returned from the invoked method.
* @throws NullPointerException if {@code receiver == null} for a non-static method
* @throws IllegalAccessException if this method is not accessible (see {@link AccessibleObject})
* @throws IllegalArgumentException if the number of arguments doesn't match the number of parameters, the receiver
* is incompatible with the declaring class, or an argument could not be unboxed
* or converted by a widening conversion to the corresponding parameter type
* @throws InvocationTargetException if an exception was thrown by the invoked method
*/
public static Object invokeOriginalMethod(Member method, Object thisObject, Object[] args)
throws Throwable {
if (args == null) {
args = EMPTY_ARRAY;
}
return invokeOriginalMethodNative(method, thisObject, args);
}
/**
* @hide
*/
public static final class CopyOnWriteSortedSet {
private transient volatile Object[] elements = EMPTY_ARRAY;
@SuppressWarnings("UnusedReturnValue")
public synchronized boolean add(E e) {
int index = indexOf(e);
if (index >= 0)
return false;
Object[] newElements = new Object[elements.length + 1];
System.arraycopy(elements, 0, newElements, 0, elements.length);
newElements[elements.length] = e;
Arrays.sort(newElements);
elements = newElements;
return true;
}
@SuppressWarnings("UnusedReturnValue")
public synchronized boolean remove(E e) {
int index = indexOf(e);
if (index == -1)
return false;
Object[] newElements = new Object[elements.length - 1];
System.arraycopy(elements, 0, newElements, 0, index);
System.arraycopy(elements, index + 1, newElements, index, elements.length - index - 1);
elements = newElements;
return true;
}
private int indexOf(Object o) {
for (int i = 0; i < elements.length; i++) {
if (o.equals(elements[i]))
return i;
}
return -1;
}
public Object[] getSnapshot() {
return elements;
}
public synchronized void clear() {
elements = EMPTY_ARRAY;
}
}
}