Expose ability to configure WebUI URL base path

src/gui/optionsdialog.cpp

@@ -1313,6 +1313,7 @@ void OptionsDialog::loadWebUITabOptions()
     // Reverse proxy
     m_ui->groupEnableReverseProxySupport->setChecked(pref->isWebUIReverseProxySupportEnabled());
     m_ui->textTrustedReverseProxiesList->setText(pref->getWebUITrustedReverseProxiesList());
+    m_ui->textWebUIBasePath->setText(pref->getWebUIBasePath());
     // DynDNS
     m_ui->checkDynDNS->setChecked(pref->isDynDNSEnabled());
     m_ui->comboDNSService->setCurrentIndex(static_cast<int>(pref->getDynDNSService()));
@@ -1354,6 +1355,7 @@ void OptionsDialog::loadWebUITabOptions()
 
     connect(m_ui->groupEnableReverseProxySupport, &QGroupBox::toggled, this, &ThisType::enableApplyButton);
     connect(m_ui->textTrustedReverseProxiesList, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
+    connect(m_ui->textWebUIBasePath, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
 
     connect(m_ui->checkDynDNS, &QGroupBox::toggled, this, &ThisType::enableApplyButton);
     connect(m_ui->comboDNSService, qComboBoxCurrentIndexChanged, this, &ThisType::enableApplyButton);
@@ -1400,6 +1402,17 @@ void OptionsDialog::saveWebUITabOptions() const
     // Reverse proxy
     pref->setWebUIReverseProxySupportEnabled(m_ui->groupEnableReverseProxySupport->isChecked());
     pref->setWebUITrustedReverseProxiesList(m_ui->textTrustedReverseProxiesList->text());
+
+    QString path = m_ui->textWebUIBasePath->text();
+    if (!path.startsWith(u"/"_s))
+        path.prepend(u"/");
+    if (!path.endsWith(u"/"_s))
+        path.append(u"/");
+    QUrl url;
+    url.setPath(path, QUrl::StrictMode);
+    if (url.isValid())
+        pref->setWebUIBasePath(url.path());
+
     // DynDNS
     pref->setDynDNSEnabled(m_ui->checkDynDNS->isChecked());
     pref->setDynDNSService(static_cast<DNS::Service>(m_ui->comboDNSService->currentIndex()));

src/gui/optionsdialog.ui

@@ -3814,6 +3814,24 @@ Use ';' to split multiple entries. Can use wildcard '*'.</string>
                     </item>
                    </layout>
                   </item>
+                  <item>
+                   <layout class="QHBoxLayout" name="horizontalLayout_132">
+                    <item>
+                     <widget class="QLabel" name="lblWebUIBasePath">
+                      <property name="text">
+                       <string>URL base path:</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item>
+                     <widget class="QLineEdit" name="textWebUIBasePath">
+                      <property name="toolTip">
+                       <string>Specify the URL path qBittorent will be made accessible at (e.g. '/qbittorrent/').</string>
+                      </property>
+                     </widget>
+                    </item>
+                   </layout>
+                  </item>
                   <item>
                    <widget class="QLabel" name="labelReverseProxyLink">
                     <property name="text">

src/webui/api/appcontroller.cpp

@@ -342,6 +342,7 @@ void AppController::preferencesAction()
     // Reverse proxy
     data[u"web_ui_reverse_proxy_enabled"_s] = pref->isWebUIReverseProxySupportEnabled();
     data[u"web_ui_reverse_proxies_list"_s] = pref->getWebUITrustedReverseProxiesList();
+    data[u"web_ui_base_path"_s] = pref->getWebUIBasePath();
     // Update my dynamic domain name
     data[u"dyndns_enabled"_s] = pref->isDynDNSEnabled();
     data[u"dyndns_service"_s] = static_cast<int>(pref->getDynDNSService());
@@ -924,6 +925,18 @@ void AppController::setPreferencesAction()
         pref->setWebUIReverseProxySupportEnabled(it.value().toBool());
     if (hasKey(u"web_ui_reverse_proxies_list"_s))
         pref->setWebUITrustedReverseProxiesList(it.value().toString());
+    if (hasKey(u"web_ui_base_path"_s))
+    {
+        QString path = it.value().toString();
+        if (!path.startsWith(u"/"_s))
+            path.prepend(u"/");
+        if (!path.endsWith(u"/"_s))
+            path.append(u"/");
+        QUrl url;
+        url.setPath(path, QUrl::StrictMode);
+        if (url.isValid())
+            pref->setWebUIBasePath(url.path());
+    }
     // Update my dynamic domain name
     if (hasKey(u"dyndns_enabled"_s))
         pref->setDynDNSEnabled(it.value().toBool());

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

@@ -1058,6 +1058,10 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                 <label for="webUIReverseProxiesListTextarea">QBT_TR(Trusted proxies list:)QBT_TR[CONTEXT=OptionsDialog]</label>
                 <input type="text" id="webUIReverseProxiesListTextarea" title="QBT_TR(Specify reverse proxy IPs (or subnets, e.g. 0.0.0.0/24) in order to use forwarded client address (X-Forwarded-For header). Use ';' to split multiple entries.)QBT_TR[CONTEXT=OptionsDialog]">
             </div>
+            <div class="formRow">
+                <label for="webUIBasePathTextarea">QBT_TR(URL base path:)QBT_TR[CONTEXT=OptionsDialog]</label>
+                <input type="text" id="webUIBasePathTextarea" title="QBT_TR(Specify the URL path qBittorent will be made accessible at (e.g. '/qbittorrent/').)QBT_TR[CONTEXT=OptionsDialog]">
+            </div>
             <div class="formRow">
                 <a href="https://github.com/qbittorrent/qBittorrent/wiki#reverse-proxy-setup-for-webui-access" target="_blank">QBT_TR(Reverse proxy setup examples)QBT_TR[CONTEXT=HttpServer]</a>
             </div>
@@ -2045,6 +2049,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
         const updateWebUIReverseProxySettings = () => {
             const isEnabled = $("webUIReverseProxySupportCheckbox").checked;
             $("webUIReverseProxiesListTextarea").disabled = !isEnabled;
+            $("webUIBasePathTextarea").disabled = !isEnabled;
         };
 
         const updateDynDnsSettings = () => {
@@ -2490,6 +2495,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                     // Reverse Proxy
                     $("webUIReverseProxySupportCheckbox").checked = pref.web_ui_reverse_proxy_enabled;
                     $("webUIReverseProxiesListTextarea").value = pref.web_ui_reverse_proxies_list;
+                    $("webUIBasePathTextarea").value = pref.web_ui_base_path;
                     updateWebUIReverseProxySettings();
 
                     // Update my dynamic domain name
@@ -2957,6 +2963,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
             // Reverse Proxy
             settings["web_ui_reverse_proxy_enabled"] = $("webUIReverseProxySupportCheckbox").checked;
             settings["web_ui_reverse_proxies_list"] = $("webUIReverseProxiesListTextarea").value;
+            settings["web_ui_base_path"] = $("webUIBasePathTextarea").value;
 
             // Update my dynamic domain name
             settings["dyndns_enabled"] = $("use_dyndns_checkbox").checked;