Add support for `allow_idna` option

Upstream PR: https://github.com/arvidn/libtorrent/pull/5316

src/base/bittorrent/session.cpp

@@ -387,6 +387,7 @@ Session::Session(QObject *parent)
     , m_isUTPRateLimited(BITTORRENT_SESSION_KEY("uTPRateLimited"), true)
     , m_utpMixedMode(BITTORRENT_SESSION_KEY("uTPMixedMode"), MixedModeAlgorithm::TCP
         , clampValue(MixedModeAlgorithm::TCP, MixedModeAlgorithm::Proportional))
+    , m_IDNSupportEnabled(BITTORRENT_SESSION_KEY("IDNSupportEnabled"), false)
     , m_multiConnectionsPerIpEnabled(BITTORRENT_SESSION_KEY("MultiConnectionsPerIp"), false)
     , m_validateHTTPSTrackerCertificate(BITTORRENT_SESSION_KEY("ValidateHTTPSTrackerCertificate"), false)
     , m_blockPeersOnPrivilegedPorts(BITTORRENT_SESSION_KEY("BlockPeersOnPrivilegedPorts"), false)
@@ -1425,6 +1426,10 @@ void Session::loadLTSettings(lt::settings_pack &settingsPack)
         break;
     }
 
+#ifdef HAS_IDN_SUPPORT
+    settingsPack.set_bool(lt::settings_pack::allow_idna, isIDNSupportEnabled());
+#endif
+
     settingsPack.set_bool(lt::settings_pack::allow_multiple_connections_per_ip, multiConnectionsPerIpEnabled());
 
 #ifdef HAS_HTTPS_TRACKER_VALIDATION
@@ -3698,6 +3703,19 @@ void Session::setUtpMixedMode(const MixedModeAlgorithm mode)
     configureDeferred();
 }
 
+bool Session::isIDNSupportEnabled() const
+{
+    return m_IDNSupportEnabled;
+}
+
+void Session::setIDNSupportEnabled(const bool enabled)
+{
+    if (enabled == m_IDNSupportEnabled) return;
+
+    m_IDNSupportEnabled = enabled;
+    configureDeferred();
+}
+
 bool Session::multiConnectionsPerIpEnabled() const
 {
     return m_multiConnectionsPerIpEnabled;

src/base/bittorrent/session.h

@@ -55,6 +55,10 @@
 #define HAS_HTTPS_TRACKER_VALIDATION
 #endif
 
+#if ((LIBTORRENT_VERSION_NUM >= 10212) && (LIBTORRENT_VERSION_NUM < 20000)) || (LIBTORRENT_VERSION_NUM >= 20002)
+#define HAS_IDN_SUPPORT
+#endif
+
 class QFile;
 class QNetworkConfiguration;
 class QNetworkConfigurationManager;
@@ -417,6 +421,8 @@ namespace BitTorrent
         void setUTPRateLimited(bool limited);
         MixedModeAlgorithm utpMixedMode() const;
         void setUtpMixedMode(MixedModeAlgorithm mode);
+        bool isIDNSupportEnabled() const;
+        void setIDNSupportEnabled(bool enabled);
         bool multiConnectionsPerIpEnabled() const;
         void setMultiConnectionsPerIpEnabled(bool enabled);
         bool validateHTTPSTrackerCertificate() const;
@@ -688,6 +694,7 @@ namespace BitTorrent
         CachedSettingValue<BTProtocol> m_btProtocol;
         CachedSettingValue<bool> m_isUTPRateLimited;
         CachedSettingValue<MixedModeAlgorithm> m_utpMixedMode;
+        CachedSettingValue<bool> m_IDNSupportEnabled;
         CachedSettingValue<bool> m_multiConnectionsPerIpEnabled;
         CachedSettingValue<bool> m_validateHTTPSTrackerCertificate;
         CachedSettingValue<bool> m_blockPeersOnPrivilegedPorts;

src/gui/advancedsettings.cpp

@@ -113,6 +113,9 @@ namespace
         OUTGOING_PORT_MAX,
         UPNP_LEASE_DURATION,
         UTP_MIX_MODE,
+#ifdef HAS_IDN_SUPPORT
+        IDN_SUPPORT,
+#endif
         MULTI_CONNECTIONS_PER_IP,
 #ifdef HAS_HTTPS_TRACKER_VALIDATION
         VALIDATE_HTTPS_TRACKER_CERTIFICATE,
@@ -223,6 +226,10 @@ void AdvancedSettings::saveAdvancedSettings()
     session->setUPnPLeaseDuration(m_spinBoxUPnPLeaseDuration.value());
     // uTP-TCP mixed mode
     session->setUtpMixedMode(static_cast<BitTorrent::MixedModeAlgorithm>(m_comboBoxUtpMixedMode.currentIndex()));
+#ifdef HAS_IDN_SUPPORT
+    // Support internationalized domain name (IDN)
+    session->setIDNSupportEnabled(m_checkBoxIDNSupport.isChecked());
+#endif
     // multiple connections per IP
     session->setMultiConnectionsPerIpEnabled(m_checkBoxMultiConnectionsPerIp.isChecked());
 #ifdef HAS_HTTPS_TRACKER_VALIDATION
@@ -543,6 +550,13 @@ void AdvancedSettings::loadAdvancedSettings()
     addRow(UTP_MIX_MODE, (tr("%1-TCP mixed mode algorithm", "uTP-TCP mixed mode algorithm").arg(C_UTP)
             + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#mixed_mode_algorithm", "(?)"))
             , &m_comboBoxUtpMixedMode);
+#ifdef HAS_IDN_SUPPORT
+    // Support internationalized domain name (IDN)
+    m_checkBoxIDNSupport.setChecked(session->isIDNSupportEnabled());
+    addRow(IDN_SUPPORT, (tr("Support internationalized domain name (IDN)")
+            + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#allow_idna", "(?)"))
+            , &m_checkBoxIDNSupport);
+#endif
     // multiple connections per IP
     m_checkBoxMultiConnectionsPerIp.setChecked(session->multiConnectionsPerIpEnabled());
     addRow(MULTI_CONNECTIONS_PER_IP, (tr("Allow multiple connections from the same IP address")

src/gui/advancedsettings.h

@@ -70,7 +70,7 @@ private:
               m_checkBoxProgramNotifications, m_checkBoxTorrentAddedNotifications, m_checkBoxTrackerFavicon, m_checkBoxTrackerStatus,
               m_checkBoxConfirmTorrentRecheck, m_checkBoxConfirmRemoveAllTags, m_checkBoxAnnounceAllTrackers, m_checkBoxAnnounceAllTiers,
               m_checkBoxMultiConnectionsPerIp, m_checkBoxValidateHTTPSTrackerCertificate, m_checkBoxBlockPeersOnPrivilegedPorts, m_checkBoxPieceExtentAffinity,
-              m_checkBoxSuggestMode, m_checkBoxSpeedWidgetEnabled;
+              m_checkBoxSuggestMode, m_checkBoxSpeedWidgetEnabled, m_checkBoxIDNSupport;
     QComboBox m_comboBoxInterface, m_comboBoxInterfaceAddress, m_comboBoxUtpMixedMode, m_comboBoxChokingAlgorithm, m_comboBoxSeedChokingAlgorithm;
     QLineEdit m_lineEditAnnounceIP;
 

src/webui/api/appcontroller.cpp

@@ -309,6 +309,8 @@ void AppController::preferencesAction()
     data["upnp_lease_duration"] = session->UPnPLeaseDuration();
     // uTP-TCP mixed mode
     data["utp_tcp_mixed_mode"] = static_cast<int>(session->utpMixedMode());
+    // Support internationalized domain name (IDN)
+    data["idn_support_enabled"] = session->isIDNSupportEnabled();
     // Multiple connections per IP
     data["enable_multi_connections_from_same_ip"] = session->multiConnectionsPerIpEnabled();
     // Validate HTTPS tracker certificate
@@ -771,6 +773,9 @@ void AppController::setPreferencesAction()
     // uTP-TCP mixed mode
     if (hasKey("utp_tcp_mixed_mode"))
         session->setUtpMixedMode(static_cast<BitTorrent::MixedModeAlgorithm>(it.value().toInt()));
+    // Support internationalized domain name (IDN)
+    if (hasKey("idn_support_enabled"))
+        session->setIDNSupportEnabled(it.value().toBool());
     // Multiple connections per IP
     if (hasKey("enable_multi_connections_from_same_ip"))
         session->setMultiConnectionsPerIpEnabled(it.value().toBool());

src/webui/www/private/views/preferences.html

@@ -1099,6 +1099,14 @@
                     </select>
                 </td>
             </tr>
+            <tr>
+                <td>
+                    <label for="IDNSupportCheckbox">QBT_TR(Support internationalized domain name (IDN) (requires libtorrent >= 1.2.12):)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#allow_idna" target="_blank">(?)</a></label>
+                </td>
+                <td>
+                    <input type="checkbox" id="IDNSupportCheckbox" />
+                </td>
+            </tr>
             <tr>
                 <td>
                     <label for="allowMultipleConnectionsFromTheSameIPAddress">QBT_TR(Allow multiple connections from the same IP address:)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#allow_multiple_connections_per_ip" target="_blank">(?)</a></label>
@@ -1895,6 +1903,7 @@
                         $('outgoingPortsMax').setProperty('value', pref.outgoing_ports_max);
                         $('UPnPLeaseDuration').setProperty('value', pref.upnp_lease_duration);
                         $('utpTCPMixedModeAlgorithm').setProperty('value', pref.utp_tcp_mixed_mode);
+                        $('IDNSupportCheckbox').setProperty('checked', pref.idn_support_enabled);
                         $('allowMultipleConnectionsFromTheSameIPAddress').setProperty('checked', pref.enable_multi_connections_from_same_ip);
                         $('validateHTTPSTrackerCertificate').setProperty('checked', pref.validate_https_tracker_certificate);
                         $('blockPeersOnPrivilegedPorts').setProperty('checked', pref.block_peers_on_privileged_ports);
@@ -2282,6 +2291,7 @@
             settings.set('outgoing_ports_max', $('outgoingPortsMax').getProperty('value'));
             settings.set('upnp_lease_duration', $('UPnPLeaseDuration').getProperty('value'));
             settings.set('utp_tcp_mixed_mode', $('utpTCPMixedModeAlgorithm').getProperty('value'));
+            settings.set('idn_support_enabled', $('IDNSupportCheckbox').getProperty('checked'));
             settings.set('enable_multi_connections_from_same_ip', $('allowMultipleConnectionsFromTheSameIPAddress').getProperty('checked'));
             settings.set('validate_https_tracker_certificate', $('validateHTTPSTrackerCertificate').getProperty('checked'));
             settings.set('block_peers_on_privileged_ports', $('blockPeersOnPrivilegedPorts').getProperty('checked'));