diff --git a/common/rfb/LogWriter.h b/common/rfb/LogWriter.h
new file mode 100644
index 0000000..124c58e
--- /dev/null
+++ b/common/rfb/LogWriter.h
@@ -0,0 +1,106 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- LogWriter.h - The Log writer class.
+
+#ifndef __RFB_LOG_WRITER_H__
+#define __RFB_LOG_WRITER_H__
+
+#include <stdarg.h>
+#include <rfb/Logger.h>
+#include <rfb/Configuration.h>
+
+// Each log writer instance has a unique textual name,
+// and is attached to a particular Log instance and
+// is assigned a particular log level.
+
+#define DEF_LOGFUNCTION(name, level) \
+  inline void name(const char* fmt, ...) { \
+    if (m_log && (level <= m_level)) {     \
+      va_list ap; va_start(ap, fmt);       \
+      m_log->write(level, m_name, fmt, ap);\
+      va_end(ap);                          \
+    }                                      \
+  }
+
+namespace rfb {
+
+  class LogWriter;
+
+  class LogWriter {
+  public:
+    LogWriter(const char* name);
+    ~LogWriter();
+
+    const char *getName() {return m_name;}
+
+    void setLog(Logger *logger);
+    void setLevel(int level);
+
+    inline void write(int level, const char* format, ...) {
+      if (m_log && (level <= m_level)) {
+        va_list ap;
+        va_start(ap, format);
+        m_log->write(level, m_name, format, ap);
+        va_end(ap);
+      }
+    }
+
+    DEF_LOGFUNCTION(error, 0)
+    DEF_LOGFUNCTION(status, 10)
+    DEF_LOGFUNCTION(info, 30)
+    DEF_LOGFUNCTION(debug, 100)
+
+    // -=- DIAGNOSTIC & HELPER ROUTINES
+
+    static void listLogWriters(int width=79);
+
+    // -=- CLASS FIELDS & FUNCTIONS
+
+    static LogWriter* log_writers;
+
+    static LogWriter* getLogWriter(const char* name);
+
+    static bool setLogParams(const char* params);
+
+  private:
+    const char* m_name;
+    int m_level;
+    Logger* m_log;
+    LogWriter* m_next;
+  };
+
+  class LogParameter : public StringParameter {
+  public:
+    LogParameter();
+    virtual bool setParam(const char* v);
+
+    // Call this to set a suitable default value.
+    // Can't use the normal default mechanism for
+    // this because there is no guarantee on C++
+    // constructor ordering - some LogWriters may
+    // not exist when LogParameter gets constructed.
+    // NB: The default value must exist for the
+    //     lifetime of the process!
+    void setDefault(const char* v);
+  };
+  extern LogParameter logParams;
+
+};
+
+#endif // __RFB_LOG_WRITER_H__