Check for null URIs

app/src/main/java/eu/faircode/email/ActivityEML.java

@@ -172,13 +172,17 @@ public class ActivityEML extends ActivityBase {
                 new SimpleTask<File>() {
                     @Override
                     protected File onExecute(Context context, Bundle args) throws Throwable {
+                        Uri uri = args.getParcelable("uri");
+
+                        if (uri == null)
+                            throw new FileNotFoundException();
+
                         File dir = new File(getCacheDir(), "shared");
                         if (!dir.exists())
                             dir.mkdir();
 
                         File file = new File(dir, "email.eml");
 
-                        Uri uri = args.getParcelable("uri");
                         Helper.copy(context, uri, file);
                         return file;
                     }
@@ -489,6 +493,9 @@ public class ActivityEML extends ActivityBase {
             protected Void onExecute(Context context, Bundle args) throws Throwable {
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme())) {
                     Log.w("Save attachment uri=" + uri);
                     throw new IllegalArgumentException(context.getString(R.string.title_no_stream));

app/src/main/java/eu/faircode/email/ActivitySetup.java

@@ -19,6 +19,8 @@ package eu.faircode.email;
     Copyright 2018-2021 by Marcel Bokhorst (M66B)
 */
 
+import static eu.faircode.email.ServiceAuthenticator.AUTH_TYPE_GMAIL;
+
 import android.Manifest;
 import android.app.Dialog;
 import android.app.NotificationChannel;
@@ -107,8 +109,6 @@ import javax.crypto.SecretKeyFactory;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.PBEKeySpec;
 
-import static eu.faircode.email.ServiceAuthenticator.AUTH_TYPE_GMAIL;
-
 public class ActivitySetup extends ActivityBase implements FragmentManager.OnBackStackChangedListener {
     private View view;
     private DrawerLayout drawerLayout;
@@ -571,6 +571,10 @@ public class ActivitySetup extends ActivityBase implements FragmentManager.OnBac
             @Override
             protected Void onExecute(Context context, Bundle args) throws Throwable {
                 Uri uri = args.getParcelable("uri");
+
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 String password = args.getString("password");
                 EntityLog.log(context, "Exporting " + uri);
 
@@ -799,6 +803,9 @@ public class ActivitySetup extends ActivityBase implements FragmentManager.OnBac
                         " answers=" + import_answers +
                         " settings=" + import_settings);
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme()) &&
                         !Helper.hasPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
                     Log.w("Import uri=" + uri);
@@ -1403,6 +1410,9 @@ public class ActivitySetup extends ActivityBase implements FragmentManager.OnBac
                     Uri uri = args.getParcelable("uri");
                     Log.i("Import certificate uri=" + uri);
 
+                    if (uri == null)
+                        throw new FileNotFoundException();
+
                     boolean der = false;
                     String extension = Helper.getExtension(uri.getLastPathSegment());
                     Log.i("Extension=" + extension);

app/src/main/java/eu/faircode/email/FragmentBase.java

@@ -19,6 +19,9 @@ package eu.faircode.email;
     Copyright 2018-2021 by Marcel Bokhorst (M66B)
 */
 
+import static android.app.ActionBar.DISPLAY_SHOW_CUSTOM;
+import static android.app.Activity.RESULT_OK;
+
 import android.app.RecoverableSecurityException;
 import android.content.ActivityNotFoundException;
 import android.content.BroadcastReceiver;
@@ -65,9 +68,6 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import static android.app.ActionBar.DISPLAY_SHOW_CUSTOM;
-import static android.app.Activity.RESULT_OK;
-
 public class FragmentBase extends Fragment {
     private String title = null;
     private String subtitle = " ";
@@ -477,6 +477,9 @@ public class FragmentBase extends Fragment {
                 long id = args.getLong("id");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme())) {
                     Log.w("Save attachment uri=" + uri);
                     throw new IllegalArgumentException(context.getString(R.string.title_no_stream));
@@ -552,6 +555,9 @@ public class FragmentBase extends Fragment {
                 long id = args.getLong("id");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme())) {
                     Log.w("Save attachment uri=" + uri);
                     throw new IllegalArgumentException(context.getString(R.string.title_no_stream));

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -2503,6 +2503,9 @@ public class FragmentCompose extends FragmentBase {
                 int requestCode = args.getInt("requestCode");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
                 boolean suggest_names = prefs.getBoolean("suggest_names", true);
 

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -6542,6 +6542,9 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 long id = args.getLong("id");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme())) {
                     Log.w("Save raw uri=" + uri);
                     throw new IllegalArgumentException(context.getString(R.string.title_no_stream));

app/src/main/java/eu/faircode/email/FragmentRules.java

@@ -19,6 +19,8 @@ package eu.faircode.email;
     Copyright 2018-2021 by Marcel Bokhorst (M66B)
 */
 
+import static android.app.Activity.RESULT_OK;
+
 import android.Manifest;
 import android.content.ContentResolver;
 import android.content.Context;
@@ -62,8 +64,6 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
-import static android.app.Activity.RESULT_OK;
-
 public class FragmentRules extends FragmentBase {
     private long account;
     private int protocol;
@@ -323,6 +323,9 @@ public class FragmentRules extends FragmentBase {
                 long fid = args.getLong("folder");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme())) {
                     Log.w("Export uri=" + uri);
                     throw new IllegalArgumentException(context.getString(R.string.title_no_stream));
@@ -387,6 +390,9 @@ public class FragmentRules extends FragmentBase {
                 long fid = args.getLong("folder");
                 Uri uri = args.getParcelable("uri");
 
+                if (uri == null)
+                    throw new FileNotFoundException();
+
                 if (!"content".equals(uri.getScheme()) &&
                         !Helper.hasPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
                     Log.w("Import uri=" + uri);