GUI/Options: Configure acceptnonstddatacarrier using settings

src/qt/optionsdialog.cpp

@@ -344,6 +344,12 @@ OptionsDialog::OptionsDialog(QWidget* parent, bool enableWallet)
         if (w != wf) datacarriercost->setValue(wf / 4);
     });
 
+    rejectnonstddatacarrier = new QCheckBox(groupBox_Spamfiltering);
+    rejectnonstddatacarrier->setText(tr("Ignore data embedded with non-standard formats"));
+    rejectnonstddatacarrier->setToolTip(tr("Some attempts to spam Bitcoin intentionally use non-standard formats in an attempt to bypass the datacarrier limits. Without this option, %1 will attempt to detect these and enforce the intended limits. By enabling this option, your node will ignore these transactions entirely (when detected) even if they fall within the configured limits otherwise."));
+    verticalLayout_Spamfiltering->addWidget(rejectnonstddatacarrier);
+    FixTabOrder(rejectnonstddatacarrier);
+
     dustrelayfee = new BitcoinAmountField(groupBox_Spamfiltering);
     CreateOptionUI(verticalLayout_Spamfiltering, dustrelayfee, tr("Ignore transactions with values that would cost more to spend at a fee rate of %s per kvB (\"dust\")."));
 
@@ -708,6 +714,7 @@ void OptionsDialog::setMapper()
     mapper->addMapping(maxscriptsize, OptionsModel::maxscriptsize);
     mapper->addMapping(datacarriercost, OptionsModel::datacarriercost);
     mapper->addMapping(datacarriersize, OptionsModel::datacarriersize);
+    mapper->addMapping(rejectnonstddatacarrier, OptionsModel::rejectnonstddatacarrier);
     mapper->addMapping(dustrelayfee, OptionsModel::dustrelayfee);
 
     QVariant current_dustdynamic = model->data(model->index(OptionsModel::dustdynamic, 0), Qt::EditRole);

src/qt/optionsdialog.h

@@ -121,6 +121,7 @@ private:
     QSpinBox *maxscriptsize;
     QSpinBox *datacarriersize;
     QDoubleSpinBox *datacarriercost;
+    QCheckBox *rejectnonstddatacarrier;
     BitcoinAmountField *dustrelayfee;
     QCheckBox *dustdynamic_enable;
     QDoubleSpinBox *dustdynamic_multiplier;

src/qt/optionsmodel.cpp

@@ -686,6 +686,8 @@ QVariant OptionsModel::getOption(OptionID option, const std::string& suffix) con
         return double(::g_weight_per_data_byte) / WITNESS_SCALE_FACTOR;
     case datacarriersize:
         return qlonglong(node().mempool().m_opts.max_datacarrier_bytes.value_or(0));
+    case rejectnonstddatacarrier:
+        return !node().mempool().m_opts.accept_non_std_datacarrier;
     case dustrelayfee:
         return qlonglong(node().mempool().m_opts.dust_relay_feerate_floor.GetFeePerK());
     case dustdynamic:
@@ -1222,6 +1224,14 @@ bool OptionsModel::setOption(OptionID option, const QVariant& value, const std::
             }
         }
         break;
+    case rejectnonstddatacarrier:
+        if (changed()) {
+            // This option is inverted
+            const bool new_value = ! value.toBool();
+            node().updateRwSetting("acceptnonstddatacarrier" + suffix, new_value);
+            node().mempool().m_opts.accept_non_std_datacarrier = new_value;
+        }
+        break;
     case dustrelayfee:
         if (changed()) {
             CAmount nNv = value.toLongLong();

src/qt/optionsmodel.h

@@ -100,6 +100,7 @@ public:
         maxscriptsize,
         datacarriercost,        // double
         datacarriersize,
+        rejectnonstddatacarrier,  // bool
         dustrelayfee,
         dustdynamic,            // QString
         blockmintxfee,