Add request permission automatically at android

2 files changed, 165 insertions, 29 deletions

diff --git a/platform/android/java/lib/src/org/godotengine/godot/Godot.java b/platform/android/java/lib/src/org/godotengine/godot/Godot.java
index 247f006a69..4dae2dcc53 100644
--- a/platform/android/java/lib/src/org/godotengine/godot/Godot.java
+++ b/platform/android/java/lib/src/org/godotengine/godot/Godot.java
@@ -30,7 +30,6 @@
 
 package org.godotengine.godot;
 
-import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.ActivityManager;
@@ -64,7 +63,6 @@ import android.os.Vibrator;
 import android.provider.Settings.Secure;
 import android.support.annotation.Keep;
 import android.support.annotation.Nullable;
-import android.support.v4.content.ContextCompat;
 import android.view.Display;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
@@ -98,14 +96,12 @@ import java.util.Locale;
 import javax.microedition.khronos.opengles.GL10;
 import org.godotengine.godot.input.GodotEditText;
 import org.godotengine.godot.payments.PaymentsManager;
+import org.godotengine.godot.utils.PermissionsUtil;
 import org.godotengine.godot.xr.XRMode;
 
 public abstract class Godot extends Activity implements SensorEventListener, IDownloaderClient {
 
 	static final int MAX_SINGLETONS = 64;
-	static final int REQUEST_RECORD_AUDIO_PERMISSION = 1;
-	static final int REQUEST_CAMERA_PERMISSION = 2;
-	static final int REQUEST_VIBRATE_PERMISSION = 3;
 	private IStub mDownloaderClientStub;
 	private TextView mStatusText;
 	private TextView mProgressFraction;
@@ -1007,32 +1003,15 @@ public abstract class Godot extends Activity implements SensorEventListener, IDo
 	}
 
 	public boolean requestPermission(String p_name) {
-		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-			// Not necessary, asked on install already
-			return true;
-		}
-
-		if (p_name.equals("RECORD_AUDIO")) {
-			if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
-				requestPermissions(new String[] { Manifest.permission.RECORD_AUDIO }, REQUEST_RECORD_AUDIO_PERMISSION);
-				return false;
-			}
-		}
+		return PermissionsUtil.requestPermission(p_name, this);
+	}
 
-		if (p_name.equals("CAMERA")) {
-			if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
-				requestPermissions(new String[] { Manifest.permission.CAMERA }, REQUEST_CAMERA_PERMISSION);
-				return false;
-			}
-		}
+	public boolean requestPermissions() {
+		return PermissionsUtil.requestManifestPermissions(this);
+	}
 
-		if (p_name.equals("VIBRATE")) {
-			if (ContextCompat.checkSelfPermission(this, Manifest.permission.VIBRATE) != PackageManager.PERMISSION_GRANTED) {
-				requestPermissions(new String[] { Manifest.permission.VIBRATE }, REQUEST_VIBRATE_PERMISSION);
-				return false;
-			}
-		}
-		return true;
+	public String[] getGrantedPermissions() {
+		return PermissionsUtil.getGrantedPermissions(this);
 	}
 
 	/**
diff --git a/platform/android/java/lib/src/org/godotengine/godot/utils/PermissionsUtil.java b/platform/android/java/lib/src/org/godotengine/godot/utils/PermissionsUtil.java
new file mode 100644
index 0000000000..2c4a444e5a
--- /dev/null
+++ b/platform/android/java/lib/src/org/godotengine/godot/utils/PermissionsUtil.java
@@ -0,0 +1,157 @@
+package org.godotengine.godot.utils;
+
+import android.Manifest;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PermissionInfo;
+import android.os.Build;
+import android.support.v4.content.ContextCompat;
+import java.util.ArrayList;
+import java.util.List;
+import org.godotengine.godot.Godot;
+
+/**
+ * This class includes utility functions for Android permissions related operations.
+ * @author Cagdas Caglak <cagdascaglak@gmail.com>
+ */
+public final class PermissionsUtil {
+
+	static final int REQUEST_RECORD_AUDIO_PERMISSION = 1;
+	static final int REQUEST_CAMERA_PERMISSION = 2;
+	static final int REQUEST_VIBRATE_PERMISSION = 3;
+	static final int REQUEST_ALL_PERMISSION_REQ_CODE = 1001;
+
+	private PermissionsUtil() {
+	}
+
+	/**
+	 * Request a dangerous permission. name must be specified in <a href="https://github.com/aosp-mirror/platform_frameworks_base/blob/master/core/res/AndroidManifest.xml">this</a>
+	 * @param name the name of the requested permission.
+	 * @param activity the caller activity for this method.
+	 * @return true/false. "true" if permission was granted otherwise returns "false".
+	 */
+	public static boolean requestPermission(String name, Godot activity) {
+		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+			// Not necessary, asked on install already
+			return true;
+		}
+
+		if (name.equals("RECORD_AUDIO") && ContextCompat.checkSelfPermission(activity, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+			activity.requestPermissions(new String[] { Manifest.permission.RECORD_AUDIO }, REQUEST_RECORD_AUDIO_PERMISSION);
+			return false;
+		}
+
+		if (name.equals("CAMERA") && ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
+			activity.requestPermissions(new String[] { Manifest.permission.CAMERA }, REQUEST_CAMERA_PERMISSION);
+			return false;
+		}
+
+		if (name.equals("VIBRATE") && ContextCompat.checkSelfPermission(activity, Manifest.permission.VIBRATE) != PackageManager.PERMISSION_GRANTED) {
+			activity.requestPermissions(new String[] { Manifest.permission.VIBRATE }, REQUEST_VIBRATE_PERMISSION);
+			return false;
+		}
+		return true;
+	}
+
+	/**
+	 * Request dangerous permissions which are defined in the Android manifest file from the user.
+	 * @param activity the caller activity for this method.
+	 * @return true/false. "true" if all permissions were granted otherwise returns "false".
+	 */
+	public static boolean requestManifestPermissions(Godot activity) {
+		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+			return true;
+		}
+
+		String[] manifestPermissions;
+		try {
+			manifestPermissions = getManifestPermissions(activity);
+		} catch (PackageManager.NameNotFoundException e) {
+			e.printStackTrace();
+			return false;
+		}
+
+		if (manifestPermissions == null || manifestPermissions.length == 0)
+			return true;
+
+		List<String> dangerousPermissions = new ArrayList<>();
+		for (String manifestPermission : manifestPermissions) {
+			try {
+				PermissionInfo permissionInfo = getPermissionInfo(activity, manifestPermission);
+				int protectionLevel = Build.VERSION.SDK_INT >= Build.VERSION_CODES.P ? permissionInfo.getProtection() : permissionInfo.protectionLevel;
+				if (protectionLevel == PermissionInfo.PROTECTION_DANGEROUS && ContextCompat.checkSelfPermission(activity, manifestPermission) != PackageManager.PERMISSION_GRANTED) {
+					dangerousPermissions.add(manifestPermission);
+				}
+			} catch (PackageManager.NameNotFoundException e) {
+				e.printStackTrace();
+				return false;
+			}
+		}
+
+		if (dangerousPermissions.isEmpty()) {
+			// If list is empty, all of dangerous permissions were granted.
+			return true;
+		}
+
+		String[] requestedPermissions = dangerousPermissions.toArray(new String[0]);
+		activity.requestPermissions(requestedPermissions, REQUEST_ALL_PERMISSION_REQ_CODE);
+		return false;
+	}
+
+	/**
+	 * With this function you can get the list of dangerous permissions that have been granted to the Android application.
+	 * @param activity the caller activity for this method.
+	 * @return granted permissions list
+	 */
+	public static String[] getGrantedPermissions(Godot activity) {
+		String[] manifestPermissions;
+		try {
+			manifestPermissions = getManifestPermissions(activity);
+		} catch (PackageManager.NameNotFoundException e) {
+			e.printStackTrace();
+			return new String[0];
+		}
+		if (manifestPermissions == null || manifestPermissions.length == 0)
+			return new String[0];
+
+		List<String> dangerousPermissions = new ArrayList<>();
+		for (String manifestPermission : manifestPermissions) {
+			try {
+				PermissionInfo permissionInfo = getPermissionInfo(activity, manifestPermission);
+				int protectionLevel = Build.VERSION.SDK_INT >= Build.VERSION_CODES.P ? permissionInfo.getProtection() : permissionInfo.protectionLevel;
+				if (protectionLevel == PermissionInfo.PROTECTION_DANGEROUS && ContextCompat.checkSelfPermission(activity, manifestPermission) == PackageManager.PERMISSION_GRANTED) {
+					dangerousPermissions.add(manifestPermission);
+				}
+			} catch (PackageManager.NameNotFoundException e) {
+				e.printStackTrace();
+				return new String[0];
+			}
+		}
+
+		return dangerousPermissions.toArray(new String[0]);
+	}
+
+	/**
+	 * Returns the permissions defined in the AndroidManifest.xml file.
+	 * @param activity the caller activity for this method.
+	 * @return manifest permissions list
+	 * @throws PackageManager.NameNotFoundException the exception is thrown when a given package, application, or component name cannot be found.
+	 */
+	private static String[] getManifestPermissions(Godot activity) throws PackageManager.NameNotFoundException {
+		PackageManager packageManager = activity.getPackageManager();
+		PackageInfo packageInfo = packageManager.getPackageInfo(activity.getPackageName(), PackageManager.GET_PERMISSIONS);
+		return packageInfo.requestedPermissions;
+	}
+
+	/**
+	 * Returns the information of the desired permission.
+	 * @param activity the caller activity for this method.
+	 * @param permission the name of the permission.
+	 * @return permission info object
+	 * @throws PackageManager.NameNotFoundException the exception is thrown when a given package, application, or component name cannot be found.
+	 */
+	private static PermissionInfo getPermissionInfo(Godot activity, String permission) throws PackageManager.NameNotFoundException {
+		PackageManager packageManager = activity.getPackageManager();
+		return packageManager.getPermissionInfo(permission, 0);
+	}
+}