1 files changed, 126 insertions, 0 deletions
diff --git a/app/src/fil/libre/repwifiapp/fwproxies/FrameworkProxy.java b/app/src/fil/libre/repwifiapp/fwproxies/FrameworkProxy.java
new file mode 100644
index 0000000..a468a1c
--- /dev/null
+++ b/app/src/fil/libre/repwifiapp/fwproxies/FrameworkProxy.java
@@ -0,0 +1,126 @@
+//
+// Copyright 2017, 2018 Filippo "Fil" Bergamo <fil.bergamo@riseup.net>
+// 
+// This file is part of RepWifiApp.
+//
+// RepWifiApp is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// RepWifiApp is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with RepWifiApp.  If not, see <http://www.gnu.org/licenses/>.
+// 
+// ********************************************************************
+
+package fil.libre.repwifiapp.fwproxies;
+
+import fil.libre.repwifiapp.helpers.Logger;
+import java.lang.reflect.Constructor;
+
+/**
+ * Provides a base class for creating "proxy" classes that wrap up classes from
+ * the Android Application Framework via reflection, exposing them outside the
+ * framework itself.
+ */
+public abstract class FrameworkProxy {
+
+    protected Object inner;
+
+    protected abstract String getInnerClassName();
+
+    protected static String getStaticInnerClassName() {
+        return "Object";
+    }
+
+    protected static Class<?> getClassFromName(String className) {
+
+        try {
+            return Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            Logger.logError(null, e);
+            return null;
+        }
+
+    }
+
+    protected Class<?> getInnerClass() {
+        return getClassFromName(getInnerClassName());
+    }
+
+    protected Class<?>[] getTypesArray(Class<?>... args) {
+        Class<?>[] types = new Class<?>[args.length];
+        for (int i = 0; i < args.length; i++) {
+            types[i] = args[i];
+        }
+        return types;
+    }
+
+    protected Object createInnerObject(Class<?> argType, Object arg) {
+        return createInnerObject(getTypesArray(argType), arg);
+    }
+
+    protected Object createInnerObject(Class<?>[] argumentTypes, Object... args) {
+        try {
+            Class<?> cls = getClassFromName(getInnerClassName());
+            Constructor<?> c = cls.getConstructor(argumentTypes);
+            this.inner = c.newInstance(getRealArgs(args));
+            return this.inner;
+        } catch (Exception e) {
+            Logger.logError("Exception while creating inner object via reflection.", e);
+            return null;
+        }
+    }
+
+    protected Object invokeMethodGetResult(String methodName, Class<?> argumentType, Object arg) {
+        return invokeMethodGetResult(methodName, getTypesArray(argumentType), arg);
+    }
+
+    protected Object invokeMethodGetResult(String methodName, Class<?>[] argumentTypes,
+                    Object... args) {
+        try {
+            return getClassFromName(getInnerClassName()).getMethod(methodName, argumentTypes)
+                            .invoke(inner, getRealArgs(args));
+        } catch (Exception e) {
+            Logger.logError("Exception while invoking method via reflection.", e);
+            return null;
+        }
+    }
+
+    protected void invokeMethod(String methodName, Class<?> argumentType, Object arg) {
+        invokeMethod(methodName, getTypesArray(argumentType), arg);
+    }
+
+    protected void invokeMethod(String methodName, Class<?>[] argumentTypes, Object... args) {
+        try {
+            getClassFromName(getInnerClassName()).getMethod(methodName, argumentTypes).invoke(
+                            inner, getRealArgs(args));
+        } catch (Exception e) {
+            Logger.logError("Exception while invoking method via reflection.", e);
+        }
+    }
+
+    private Object[] getRealArgs(Object[] args) {
+
+        if (args == null || args.length == 0) {
+            return new Object[] {};
+        }
+
+        // if the object is just a proxy, use the inner object as an argument to
+        // the call.
+        for (int i = 0; i < args.length; i++) {
+            if (args[i] instanceof FrameworkProxy) {
+                args[i] = ((FrameworkProxy) args[i]).inner;
+            }
+        }
+
+        return args;
+
+    }
+
+}
+\ No newline at end of file