--- func_strings.c.old	2006-03-16 22:03:57.000000000 +0100
+++ func_strings.c	2006-03-16 22:09:18.000000000 +0100
@@ -422,6 +422,71 @@
 	.desc = "Example:  ${KEYPADHASH(Les)} returns \"537\"\n",
 };
 
+static char *function_tolower(struct ast_channel *chan, char *cmd, char *data,                                                                              char *buf, size_t len)
+{
+        int i = 0;
+        while (data[i])
+        {
+           if (data[i] & 0x80)
+              {
+                 unsigned char c = data[i];
+                 if (c >= 192 && c <= 223)
+                   {
+                      c += 32;
+                      data[i] = (char)c;
+                      }
+                     }
+        else
+              {
+                 data[i] = tolower(data[i]);
+                     }
+                i++;
+                }
+   return data;
+}
+
+static struct ast_custom_function tolower_function = {
+        .name = "TOLOWER",
+        .synopsis = "Returns the string in lowercase",
+        .syntax = "TOLOWER(<string>)",
+        .desc = "Using TOLOWER convert all ASCII characters from A to Z\n"
+                "to lowercase a to z.\n",
+        .read = function_tolower,
+};
+
+static char *function_toupper(struct ast_channel *chan, char *cmd, char *data,                                                                              char *buf, size_t len)
+{
+    int i = 0;
+    while (data[i])
+     {
+        if (data[i] & 0x80)
+          {
+                 unsigned char c = data[i];
+                 if (c >= 224)
+               {
+                  c -= 32;
+                  data[i] = (char)c;
+               }
+          }
+        else
+          {
+                 data[i] = toupper(data[i]);
+          }
+                i++;
+     }
+   return data;
+}
+
+
+static struct ast_custom_function toupper_function = {
+        .name = "TOUPPER",
+        .synopsis = "Returns the string in uppercase",
+        .syntax = "TOUPPER(<string>)",
+        .desc = "Using TOUPPER convert all ASCII characters from a to z\n"
+                "to uppercase A to Z.\n",
+        .read = function_toupper,
+};
+
 static char *tdesc = "String handling dialplan functions";
 
 int unload_module(void)
@@ -438,6 +503,8 @@
 	res |= ast_custom_function_unregister(&strptime_function);
 	res |= ast_custom_function_unregister(&eval_function);
 	res |= ast_custom_function_unregister(&keypadhash_function);
+        res |= ast_custom_function_unregister(&tolower_function);
+        res |= ast_custom_function_unregister(&toupper_function);
 
 	return res;
 }
@@ -456,6 +523,8 @@
 	res |= ast_custom_function_register(&strptime_function);
 	res |= ast_custom_function_register(&eval_function);
 	res |= ast_custom_function_register(&keypadhash_function);
+        res |= ast_custom_function_register(&tolower_function);
+        res |= ast_custom_function_register(&toupper_function);
 
 	return res;
 }