virtual: Skip nonexistent mailboxes also in race conditions

If mailbox is deleted between mailbox listing and when it's opened, it
shows up as nonexistent. It should be ignored rather than failing.

diff --git a/src/plugins/virtual/virtual-config.c b/src/plugins/virtual/virtual-config.c
index c1e03d6d62cddc2cca9c832d4d37f833eb32f6d2..f448c81d7d7307cb9111e06607441b281788418a 100644 (file)
--- a/src/plugins/virtual/virtual-config.c
+++ b/src/plugins/virtual/virtual-config.c
@@ -343,17 +343,22 @@ static int virtual_config_box_metadata_match(struct mailbox *box,
 {
        struct imap_metadata_transaction *imtrans;
        struct mail_attribute_value value;
+       enum mail_error mail_error = MAIL_ERROR_NONE;
        int ret;
 
        imtrans = imap_metadata_transaction_begin(box);
        ret = imap_metadata_get(imtrans, bbox->metadata_entry, &value);
        if (ret < 0)
-               *error_r = t_strdup(imap_metadata_transaction_get_last_error(imtrans, NULL));
+               *error_r = t_strdup(imap_metadata_transaction_get_last_error(imtrans, &mail_error));
        if (ret > 0)
                ret = wildcard_match(value.value, bbox->metadata_value) ? 1 : 0;
        if (ret >= 0 && bbox->negative_match)
                ret = ret > 0 ? 0 : 1;
        (void)imap_metadata_transaction_commit(&imtrans, NULL, NULL);
+       if (ret < 0 && mail_error == MAIL_ERROR_NOTFOUND) {
+               /* Ignore nonexistent / \NoSelect mailboxes */
+               ret = 0;
+       }
        return ret;
 }