feat(java): add avoid sensor leak

codeql-custom-queries-java/android/avoid-sensor-manager-leak.expected

@@ -0,0 +1,4 @@
+| avoid-sensor-manager-leak.java:20:9:20:56 | registerListener(...) | Call unregisterListener() to match this registerListener() on 'SensorManager' to avoid unnecessary battery drain. |
+| avoid-sensor-manager-leak.java:26:9:26:56 | registerListener(...) | Call unregisterListener() to match this registerListener() on 'SensorManager' to avoid unnecessary battery drain. |
+| avoid-sensor-manager-leak.java:32:9:32:56 | registerListener(...) | Call unregisterListener() to match this registerListener() on 'SensorManager' to avoid unnecessary battery drain. |
+| avoid-sensor-manager-leak.java:33:9:33:56 | registerListener(...) | Call unregisterListener() to match this registerListener() on 'SensorManager' to avoid unnecessary battery drain. |

codeql-custom-queries-java/android/avoid-sensor-manager-leak.java

@@ -0,0 +1,53 @@
+class SensorManager {
+    void registerListener(Object listener, Object sensor, int delay) {
+    }
+
+    void unregisterListener(Object listener) {
+    }
+}
+
+class Sensor {
+    static final int TYPE_ACCELEROMETER = 1;
+    static final int TYPE_GYROSCOPE = 4;
+    static final int TYPE_LIGHT = 5;
+}
+
+// 🚫 Noncompliant - registerListener without unregisterListener
+class NoncompliantSensorLeak {
+
+    void startAccelerometer() {
+        SensorManager sManager = new SensorManager();
+        sManager.registerListener(null, new Sensor(), 1); // $ Alert
+        // missing sManager.unregisterListener()
+    }
+
+    void startGyroscope() {
+        SensorManager sManager = new SensorManager();
+        sManager.registerListener(null, new Sensor(), 1); // $ Alert
+        // missing sManager.unregisterListener()
+    }
+
+    void startMultipleSensors() {
+        SensorManager sManager = new SensorManager();
+        sManager.registerListener(null, new Sensor(), 1); // $ Alert
+        sManager.registerListener(null, new Sensor(), 1); // $ Alert
+        // missing sManager.unregisterListener()
+    }
+}
+
+// ✅ Compliant - registerListener with matching unregisterListener
+class CompliantSensorUsage {
+
+    void startAccelerometer() {
+        SensorManager sManager = new SensorManager();
+        sManager.registerListener(null, new Sensor(), 1); // OK
+        sManager.unregisterListener(null);
+    }
+
+    void startMultipleSensors() {
+        SensorManager sManager = new SensorManager();
+        sManager.registerListener(null, new Sensor(), 1); // OK
+        sManager.registerListener(null, new Sensor(), 1); // OK
+        sManager.unregisterListener(null);
+    }
+}

codeql-custom-queries-java/android/avoid-sensor-manager-leak.ql

@@ -0,0 +1,23 @@
+/**
+ * @name Avoid SensorManager listener leak
+ * @description Calling SensorManager.registerListener() without a matching unregisterListener() causes the sensor to keep processing data during idle states, draining battery within hours.
+ * @kind problem
+ * @problem.severity warning
+ * @precision medium
+ * @id java/android/avoid-sensor-manager-leak
+ * @link https://green-code-initiative.org/rules#id:GCI514
+ * @tags android
+ */
+
+import java
+
+from MethodCall register
+where
+  register.getMethod().getName() = "registerListener" and
+  register.getQualifier().(VarAccess).getType().(RefType).getName() = "SensorManager" and
+  not exists(MethodCall unregister |
+    unregister.getMethod().getName() = "unregisterListener" and
+    unregister.getEnclosingCallable() = register.getEnclosingCallable()
+  )
+select register,
+  "Call unregisterListener() to match this registerListener() on 'SensorManager' to avoid unnecessary battery drain."