Hide FolderClosedIOException

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

@@ -28,7 +28,6 @@ import com.sun.mail.imap.IMAPStore;
 import com.sun.mail.imap.protocol.FetchResponse;
 import com.sun.mail.imap.protocol.IMAPProtocol;
 import com.sun.mail.imap.protocol.UID;
-import com.sun.mail.util.FolderClosedIOException;
 import com.sun.mail.util.MailConnectException;
 
 import org.json.JSONArray;
@@ -1050,8 +1049,6 @@ class Core {
                                         (IMAPMessage) isub[j], ids[from + j], state);
                         } catch (FolderClosedException ex) {
                             throw ex;
-                        } catch (FolderClosedIOException ex) {
-                            throw ex;
                         } catch (Throwable ex) {
                             Log.e(folder.name, ex);
                         } finally {

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

@@ -70,7 +70,6 @@ import androidx.preference.PreferenceManager;
 import com.android.billingclient.api.BillingClient;
 import com.google.android.material.bottomnavigation.BottomNavigationView;
 import com.sun.mail.imap.IMAPStore;
-import com.sun.mail.util.FolderClosedIOException;
 import com.sun.mail.util.MailConnectException;
 
 import org.json.JSONException;
@@ -320,8 +319,6 @@ public class Helper {
                 return null;
             if (ex instanceof FolderClosedException)
                 return null;
-            if (ex instanceof FolderClosedIOException)
-                return null;
             if (ex instanceof IllegalStateException)
                 // sync when store disconnected
                 return null;

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

@@ -23,6 +23,8 @@ import android.content.Context;
 import android.text.TextUtils;
 import android.webkit.MimeTypeMap;
 
+import com.sun.mail.util.FolderClosedIOException;
+
 import java.io.BufferedOutputStream;
 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
@@ -724,7 +726,7 @@ public class MessageHelper {
         private List<AttachmentPart> attachments = new ArrayList<>();
         private ArrayList<String> warnings = new ArrayList<>();
 
-        String getHtml(Context context) throws MessagingException, IOException {
+        String getHtml(Context context) throws MessagingException {
             if (plain == null && html == null) {
                 warnings.add(context.getString(R.string.title_no_body));
                 return null;
@@ -743,12 +745,10 @@ public class MessageHelper {
                     result = readStream((InputStream) content, "UTF-8");
                 else
                     result = content.toString();
-            } catch (MessagingException ex) {
+            } catch (FolderClosedException ex) {
-                // Including FolderClosedException
-                throw ex;
-            } catch (IOException ex) {
-                // Including FolderClosedIOException
                 throw ex;
+            } catch (FolderClosedIOException ex) {
+                throw new FolderClosedException(ex.getFolder(), "getHtml", ex);
             } catch (Throwable ex) {
                 Log.w(ex);
                 text = true;
@@ -876,6 +876,8 @@ public class MessageHelper {
                 db.attachment().setDownloaded(id, size);
 
                 Log.i("Downloaded attachment size=" + size);
+            } catch (FolderClosedIOException ex) {
+                throw new FolderClosedException(ex.getFolder(), "downloadAttachment", ex);
             } catch (Throwable ex) {
                 // Reset progress on failure
                 db.attachment().setError(id, Helper.formatThrowable(ex));