Theme: Allow to change the transmission checksum through theming.

src/libsync/configfile.cpp

@@ -122,7 +122,15 @@ int ConfigFile::timeout() const
 QString ConfigFile::transmissionChecksum() const
 {
     QSettings settings(configFile(), QSettings::IniFormat);
-    return settings.value(QLatin1String(transmissionChecksumC), QString()).toString();
+
+    QString checksum = settings.value(QLatin1String(transmissionChecksumC), QString()).toString();
+
+    if( checksum.isEmpty() ) {
+        // if the config file setting is empty, maybe the Branding requires it.
+        checksum = Theme::instance()->transmissionChecksum();
+    }
+
+    return checksum;
 }
 
 void ConfigFile::setOptionalDesktopNotifications(bool show)

src/libsync/theme.cpp

@@ -241,6 +241,11 @@ QString Theme::updateCheckUrl() const
     return QLatin1String("https://updates.owncloud.com/client/");
 }
 
+QString Theme::transmissionChecksum() const
+{
+    return QString::null; // No transmission by default.
+}
+
 QString Theme::gitSHA1() const
 {
     QString devString;

src/libsync/theme.h

@@ -189,12 +189,19 @@ public:
      */
     virtual QString updateCheckUrl() const;
 
-
     /**
      * When true, the setup wizard will show the selective sync dialog by default and default
      * to nothing selected
      */
     virtual bool wizardSelectiveSyncDefaultNothing() const;
+    /**
+     * @brief Add an additional checksum header to PUT requests and compare them
+     * if they come with GET requests.
+     * This value sets the checksum type (SHA1, MD5 or Adler32) or is left empty
+     * if no checksumming is wanted. In that case it can still be overwritten in
+     * the client config file.
+     */
+    virtual QString transmissionChecksum() const;
 
 protected:
 #ifndef TOKEN_AUTH_ONLY