Add desktop branding option to add url suffix during setup

src/gui/newwizard/states/serverurlsetupwizardstate.cpp

@@ -72,7 +72,13 @@ void ServerUrlSetupWizardState::evaluatePage()
             userProvidedUrl.prepend(defaultUrlSchemeC);
         }
 
-        return QUrl::fromUserInput(userProvidedUrl).adjusted(QUrl::RemoveUserInfo);
+        auto url = QUrl::fromUserInput(userProvidedUrl).adjusted(QUrl::RemoveUserInfo);
+        const QString serverPathOverride = Theme::instance()->overrideServerPath();
+        if (!serverPathOverride.isEmpty()) {
+            url.setPath(serverPathOverride);
+        }
+
+        return url;
     }();
 
     // (ab)use the account builder as temporary storage for the URL we are about to probe (after sanitation)

src/libsync/theme.cpp

@@ -232,6 +232,11 @@ QString Theme::overrideServerUrlV2() const
     return serverOverride;
 }
 
+QString Theme::overrideServerPath() const
+{
+    return {};
+}
+
 void Theme::setSystrayUseMonoIcons(bool mono)
 {
     _mono = mono;

src/libsync/theme.h

@@ -200,6 +200,16 @@ class OWNCLOUDSYNC_EXPORT Theme : public QObject
      */
     QString overrideServerUrlV2() const;
 
+    /**
+     * If set to a non-empty string, the path part of the URL will be overwritten with this path.
+     * This can be used to set the end-point to a fixed location, and thereby shorten the URL that
+     * is given to the users.
+     *
+     * For example, if the URL for the product always contains `/dav` as the path, and setting that
+     * here, and the URL given to the user is `example.com`, the branded application will contact
+     * `example.com/dav`.
+     */
+    virtual QString overrideServerPath() const;
 
     /**
      * The default folder name without path on the server at setup time.