diff --git a/common/rfb/util.cxx b/common/rfb/util.cxx
new file mode 100644
index 0000000..5745432
--- /dev/null
+++ b/common/rfb/util.cxx
@@ -0,0 +1,184 @@
+/* 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.
+ */
+
+/*
+ * The following applies to stcasecmp and strncasecmp implementations:
+ *
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of California at Berkeley. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific written prior permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include <rfb/util.h>
+
+// Provide strcasecmp() and/or strncasecmp() if absent on this system.
+
+#ifndef WIN32
+#if !defined(HAVE_STRCASECMP) || !defined(HAVE_STRNCASECMP)
+
+extern "C" {
+
+/*
+ * This array is designed for mapping upper and lower case letter
+ * together for a case independent comparison.  The mappings are
+ * based upon ascii character sequences.
+ */
+static unsigned char s_charmap[] = {
+	'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+	'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+	'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+	'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+	'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+	'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+	'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+	'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+	'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+	'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+	'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+	'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+	'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+	'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+	'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+	'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+	'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+	'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+	'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+	'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+	'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+	'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+	'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+	'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+	'\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+	'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+	'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+	'\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
+	'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+	'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+	'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+	'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+
+#ifndef HAVE_STRCASECMP
+int
+strcasecmp(const char *s1, const char *s2)
+{
+    unsigned char u1, u2;
+
+    for (;;) {
+	u1 = (unsigned char) *s1++;
+	u2 = (unsigned char) *s2++;
+	if (s_charmap[u1] != s_charmap[u2]) {
+	    return s_charmap[u1] - s_charmap[u2];
+	}
+	if (u1 == '\0') {
+	    return 0;
+	}
+    }
+}
+#endif // !defined(HAVE_STRCASECMP)
+
+#ifndef HAVE_STRNCASECMP
+int
+strncasecmp(const char *s1, const char *s2, size_t n)
+{
+    unsigned char u1, u2;
+
+    for (; n != 0; --n) {
+	u1 = (unsigned char) *s1++;
+	u2 = (unsigned char) *s2++;
+	if (s_charmap[u1] != s_charmap[u2]) {
+	    return s_charmap[u1] - s_charmap[u2];
+	}
+	if (u1 == '\0') {
+	    return 0;
+	}
+    }
+    return 0;
+}
+#endif // !defined(HAVE_STRNCASECMP)
+
+} // extern "C"
+
+#endif // !defined(HAVE_STRCASECMP) || !defined(HAVE_STRNCASECMP)
+#endif // defined(WIN32)
+
+namespace rfb {
+
+  char* strDup(const char* s) {
+    if (!s) return 0;
+    int l = strlen(s);
+    char* r = new char[l+1];
+    memcpy(r, s, l+1);
+    return r;
+  };
+
+  void strFree(char* s) {
+    delete [] s;
+  }
+
+
+  bool strSplit(const char* src, const char limiter, char** out1, char** out2, bool fromEnd) {
+    CharArray out1old, out2old;
+    if (out1) out1old.buf = *out1;
+    if (out2) out2old.buf = *out2;
+    int len = strlen(src);
+    int i=0, increment=1, limit=len;
+    if (fromEnd) {
+      i=len-1; increment = -1; limit = -1;
+    }
+    while (i!=limit) {
+      if (src[i] == limiter) {
+        if (out1) {
+          *out1 = new char[i+1];
+          if (i) memcpy(*out1, src, i);
+          (*out1)[i] = 0;
+        }
+        if (out2) {
+          *out2 = new char[len-i];
+          if (len-i-1) memcpy(*out2, &src[i+1], len-i-1);
+          (*out2)[len-i-1] = 0;
+        }
+        return true;
+      }
+      i+=increment;
+    }
+    if (out1) *out1 = strDup(src);
+    if (out2) *out2 = 0;
+    return false;
+  }
+
+  bool strContains(const char* src, char c) {
+    int l=strlen(src);
+    for (int i=0; i<l; i++)
+      if (src[i] == c) return true;
+    return false;
+  }
+
+  void strCopy(char* dest, const char* src, int destlen) {
+    if (src)
+      strncpy(dest, src, destlen-1);
+    dest[src ? destlen-1 : 0] = 0;
+  }
+
+};