Allow to globally disable the use of proxy

PR #19273.
Closes #19141.

src/app/upgrade.cpp

@@ -344,7 +344,7 @@ namespace
             switch (number)
             {
             case 0:
-                settingsStorage->storeValue(key, u"None"_s);
+                settingsStorage->storeValue(key, Net::ProxyType::None);
                 break;
             case 1:
                 settingsStorage->storeValue(key, Net::ProxyType::HTTP);
@@ -377,16 +377,6 @@ namespace
         const auto onlyForTorrents = settingsStorage->loadValue<bool>(u"Network/Proxy/OnlyForTorrents"_s)
                 || (proxyType == u"SOCKS4");
 
-        if (proxyType == u"None")
-        {
-            settingsStorage->storeValue(u"Network/Proxy/Type"_s, Net::ProxyType::HTTP);
-
-            settingsStorage->storeValue(u"Network/Proxy/Profiles/BitTorrent"_s, false);
-            settingsStorage->storeValue(u"Network/Proxy/Profiles/RSS"_s, false);
-            settingsStorage->storeValue(u"Network/Proxy/Profiles/Misc"_s, false);
-        }
-        else
-        {
         settingsStorage->storeValue(u"Network/Proxy/Profiles/BitTorrent"_s, true);
         settingsStorage->storeValue(u"Network/Proxy/Profiles/RSS"_s, !onlyForTorrents);
         settingsStorage->storeValue(u"Network/Proxy/Profiles/Misc"_s, !onlyForTorrents);
@@ -401,7 +391,6 @@ namespace
             settingsStorage->storeValue(u"Network/Proxy/Type"_s, Net::ProxyType::SOCKS5);
             settingsStorage->storeValue(u"Network/Proxy/AuthEnabled"_s, true);
         }
-        }
 
         settingsStorage->removeValue(u"Network/Proxy/OnlyForTorrents"_s);
 

src/base/bittorrent/sessionimpl.cpp

@@ -1691,11 +1691,10 @@ lt::settings_pack SessionImpl::loadLTSettings() const
 
     // proxy
     settingsPack.set_int(lt::settings_pack::proxy_type, lt::settings_pack::none);
-    if (Preferences::instance()->useProxyForBT())
-    {
     const auto *proxyManager = Net::ProxyConfigurationManager::instance();
     const Net::ProxyConfiguration proxyConfig = proxyManager->proxyConfiguration();
-
+    if ((proxyConfig.type != Net::ProxyType::None) && Preferences::instance()->useProxyForBT())
+    {
         switch (proxyConfig.type)
         {
         case Net::ProxyType::SOCKS4:

src/base/net/downloadmanager.cpp

@@ -231,8 +231,9 @@ void Net::DownloadManager::applyProxySettings()
 
     m_proxy = QNetworkProxy(QNetworkProxy::NoProxy);
 
-    if (proxyConfig.type != ProxyType::SOCKS4)
+    if ((proxyConfig.type == Net::ProxyType::None) || (proxyConfig.type == ProxyType::SOCKS4))
-    {
+        return;
+
     // Proxy enabled
     if (proxyConfig.type == ProxyType::SOCKS5)
     {
@@ -261,7 +262,6 @@ void Net::DownloadManager::applyProxySettings()
     else
         m_proxy.setCapabilities(m_proxy.capabilities() & ~QNetworkProxy::HostNameLookupCapability);
 }
-}
 
 void Net::DownloadManager::handleDownloadFinished(DownloadHandlerImpl *finishedHandler)
 {

src/base/net/proxyconfigurationmanager.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2016  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2016-2023  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -60,10 +60,10 @@ ProxyConfigurationManager::ProxyConfigurationManager(QObject *parent)
     , m_storeProxyPassword {SETTINGS_KEY(u"Password"_s)}
     , m_storeProxyHostnameLookupEnabled {SETTINGS_KEY(u"HostnameLookupEnabled"_s)}
 {
-    m_config.type = m_storeProxyType.get(ProxyType::HTTP);
+    m_config.type = m_storeProxyType.get(ProxyType::None);
-    if ((m_config.type < ProxyType::HTTP) || (m_config.type > ProxyType::SOCKS4))
+    if ((m_config.type < ProxyType::None) || (m_config.type > ProxyType::SOCKS4))
-        m_config.type = ProxyType::HTTP;
+        m_config.type = ProxyType::None;
-    m_config.ip = m_storeProxyIP.get(u"0.0.0.0"_s);
+    m_config.ip = m_storeProxyIP.get((m_config.type == ProxyType::None) ? u""_s : u"0.0.0.0"_s);
     m_config.port = m_storeProxyPort.get(8080);
     m_config.authEnabled = m_storeProxyAuthEnabled;
     m_config.username = m_storeProxyUsername;

src/base/net/proxyconfigurationmanager.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2016  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2016-2023  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -39,6 +39,7 @@ namespace Net
 
     enum class ProxyType
     {
+        None = 0,
         HTTP = 1,
         SOCKS5 = 2,
         SOCKS4 = 5
@@ -47,8 +48,8 @@ namespace Net
 
     struct ProxyConfiguration
     {
-        ProxyType type = ProxyType::HTTP;
+        ProxyType type = ProxyType::None;
-        QString ip = u"0.0.0.0"_s;
+        QString ip;
         ushort port = 8080;
         bool authEnabled = false;
         QString username;

src/base/search/searchpluginmanager.cpp

@@ -396,7 +396,7 @@ void SearchPluginManager::applyProxySettings()
 
     // Define environment variables for urllib in search engine plugins
     QString proxyStrHTTP, proxyStrSOCK;
-    if (Preferences::instance()->useProxyForGeneralPurposes())
+    if ((proxyConfig.type != Net::ProxyType::None) && Preferences::instance()->useProxyForGeneralPurposes())
     {
         switch (proxyConfig.type)
         {

src/gui/optionsdialog.cpp

@@ -804,6 +804,7 @@ void OptionsDialog::loadConnectionTabOptions()
     const auto *proxyConfigManager = Net::ProxyConfigurationManager::instance();
     const Net::ProxyConfiguration proxyConf = proxyConfigManager->proxyConfiguration();
 
+    m_ui->comboProxyType->addItem(tr("(None)"), QVariant::fromValue(Net::ProxyType::None));
     m_ui->comboProxyType->addItem(tr("SOCKS4"), QVariant::fromValue(Net::ProxyType::SOCKS4));
     m_ui->comboProxyType->addItem(tr("SOCKS5"), QVariant::fromValue(Net::ProxyType::SOCKS5));
     m_ui->comboProxyType->addItem(tr("HTTP"), QVariant::fromValue(Net::ProxyType::HTTP));
@@ -1537,10 +1538,36 @@ void OptionsDialog::toggleComboRatioLimitAct()
 void OptionsDialog::adjustProxyOptions()
 {
     const auto currentProxyType = m_ui->comboProxyType->currentData().value<Net::ProxyType>();
-    const bool isAuthSupported = (currentProxyType != Net::ProxyType::SOCKS4);
+    const bool isAuthSupported = ((currentProxyType == Net::ProxyType::SOCKS5)
+            || (currentProxyType == Net::ProxyType::HTTP));
 
     m_ui->checkProxyAuth->setEnabled(isAuthSupported);
 
+    if (currentProxyType == Net::ProxyType::None)
+    {
+        m_ui->labelProxyTypeIncompatible->setVisible(false);
+
+        m_ui->lblProxyIP->setEnabled(false);
+        m_ui->textProxyIP->setEnabled(false);
+        m_ui->lblProxyPort->setEnabled(false);
+        m_ui->spinProxyPort->setEnabled(false);
+
+        m_ui->checkProxyHostnameLookup->setEnabled(false);
+        m_ui->checkProxyRSS->setEnabled(false);
+        m_ui->checkProxyMisc->setEnabled(false);
+        m_ui->checkProxyBitTorrent->setEnabled(false);
+        m_ui->checkProxyPeerConnections->setEnabled(false);
+    }
+    else
+    {
+        m_ui->lblProxyIP->setEnabled(true);
+        m_ui->textProxyIP->setEnabled(true);
+        m_ui->lblProxyPort->setEnabled(true);
+        m_ui->spinProxyPort->setEnabled(true);
+
+        m_ui->checkProxyBitTorrent->setEnabled(true);
+        m_ui->checkProxyPeerConnections->setEnabled(true);
+
         if (currentProxyType == Net::ProxyType::SOCKS4)
         {
             m_ui->labelProxyTypeIncompatible->setVisible(true);
@@ -1559,6 +1586,7 @@ void OptionsDialog::adjustProxyOptions()
             m_ui->checkProxyMisc->setEnabled(true);
         }
     }
+}
 
 bool OptionsDialog::isSplashScreenDisabled() const
 {

src/webui/api/appcontroller.cpp

@@ -619,7 +619,7 @@ void AppController::setPreferencesAction()
     auto *proxyManager = Net::ProxyConfigurationManager::instance();
     Net::ProxyConfiguration proxyConf = proxyManager->proxyConfiguration();
     if (hasKey(u"proxy_type"_s))
-        proxyConf.type = Utils::String::toEnum(it.value().toString(), Net::ProxyType::HTTP);
+        proxyConf.type = Utils::String::toEnum(it.value().toString(), Net::ProxyType::None);
     if (hasKey(u"proxy_ip"_s))
         proxyConf.ip = it.value().toString();
     if (hasKey(u"proxy_port"_s))

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

@@ -358,6 +358,7 @@
                 </td>
                 <td>
                     <select id="peer_proxy_type_select" onchange="qBittorrent.Preferences.updatePeerProxySettings();">
+                        <option value="None">QBT_TR((None))QBT_TR[CONTEXT=OptionsDialog]</option>
                         <option value="SOCKS4">QBT_TR(SOCKS4)QBT_TR[CONTEXT=OptionsDialog]</option>
                         <option value="SOCKS5">QBT_TR(SOCKS5)QBT_TR[CONTEXT=OptionsDialog]</option>
                         <option value="HTTP">QBT_TR(HTTP)QBT_TR[CONTEXT=OptionsDialog]</option>
@@ -380,7 +381,7 @@
 
         <div class="formRow">
             <input type="checkbox" id="proxyHostnameLookupCheckbox" title="QBT_TR(If checked, hostname lookups are done via the proxy.)QBT_TR[CONTEXT=OptionsDialog]" />
-            <label for="proxyHostnameLookupCheckbox">QBT_TR(Use proxy for hostname lookup)QBT_TR[CONTEXT=OptionsDialog]</label>
+            <label for="proxyHostnameLookupCheckbox">QBT_TR(Perform hostname lookup via proxy)QBT_TR[CONTEXT=OptionsDialog]</label>
         </div>
 
         <fieldset class="settings">
@@ -1612,21 +1613,28 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
 
         const updatePeerProxySettings = function() {
             const proxyType = $('peer_proxy_type_select').getProperty('value');
+            const isProxyDisabled = (proxyType === "None");
             const isProxySocks4 = (proxyType === "SOCKS4");
 
-            $('peer_proxy_auth_checkbox').setProperty('disabled', isProxySocks4);
+            $('peer_proxy_host_text').setProperty('disabled', isProxyDisabled);
-            $('use_peer_proxy_checkbox').setProperty('disabled', !$('proxy_bittorrent_checkbox').getProperty('checked'));
+            $('peer_proxy_port_value').setProperty('disabled', isProxyDisabled);
-            $('proxyHostnameLookupCheckbox').setProperty('disabled', isProxySocks4);
+
-            $('proxy_rss_checkbox').setProperty('disabled', isProxySocks4);
+            $('peer_proxy_auth_checkbox').setProperty('disabled', (isProxyDisabled || isProxySocks4));
-            $('proxy_misc_checkbox').setProperty('disabled', isProxySocks4);
+            $('proxy_bittorrent_checkbox').setProperty('disabled', isProxyDisabled);
+            $('use_peer_proxy_checkbox').setProperty('disabled', (isProxyDisabled || !$('proxy_bittorrent_checkbox').getProperty('checked')));
+            $('proxyHostnameLookupCheckbox').setProperty('disabled', (isProxyDisabled || isProxySocks4));
+            $('proxy_rss_checkbox').setProperty('disabled', (isProxyDisabled || isProxySocks4));
+            $('proxy_misc_checkbox').setProperty('disabled', (isProxyDisabled || isProxySocks4));
 
             updatePeerProxyAuthSettings();
         };
 
         const updatePeerProxyAuthSettings = function() {
+            const proxyType = $('peer_proxy_type_select').getProperty('value');
+            const isProxyDisabled = (proxyType === "None");
             const isPeerProxyAuthEnabled = (!$('peer_proxy_auth_checkbox').getProperty('disabled') && $('peer_proxy_auth_checkbox').getProperty('checked'));
-            $('peer_proxy_username_text').setProperty('disabled', !isPeerProxyAuthEnabled);
+            $('peer_proxy_username_text').setProperty('disabled', (isProxyDisabled || !isPeerProxyAuthEnabled));
-            $('peer_proxy_password_text').setProperty('disabled', !isPeerProxyAuthEnabled);
+            $('peer_proxy_password_text').setProperty('disabled', (isProxyDisabled || !isPeerProxyAuthEnabled));
         };
 
         const updateFilterSettings = function() {