3 files changed, 57 insertions, 10 deletions

diff --git a/libs/web/htdocs/luci-static/resources/cbi.js b/libs/web/htdocs/luci-static/resources/cbi.js
index 8e2f62aea2..059d27a1b9 100644
--- a/libs/web/htdocs/luci-static/resources/cbi.js
+++ b/libs/web/htdocs/luci-static/resources/cbi.js
@@ -155,6 +155,18 @@ var cbi_validators = {
 	'uciname': function(v)
 	{
 		return (v.match(/^[a-zA-Z0-9_]+$/) != null);
+	},
+
+	'range': function(v, args)
+	{
+		var min = parseInt(args[0]);
+		var max = parseInt(args[1]);
+		var val = parseInt(v);
+
+		if (!isNaN(min) && !isNaN(max) && !isNaN(val))
+			return ((val >= min) && (val <= max));
+
+		return false;
 	}
 };
 
@@ -634,6 +646,14 @@ function cbi_validate_reset(form)
 function cbi_validate_field(cbid, optional, type)
 {
 	var field = (typeof cbid == "string") ? document.getElementById(cbid) : cbid;
+	var vargs;
+
+	if( type.match(/^(\w+)\(([^\(\)]+)\)/) )
+	{
+		type  = RegExp.$1;
+		vargs = RegExp.$2.split(/\s*,\s*/);
+	}
+
 	var vldcb = cbi_validators[type];
 
 	if( field && vldcb )
@@ -649,7 +669,7 @@ function cbi_validate_field(cbid, optional, type)
 				var value = (field.options && field.options.selectedIndex > -1)
 					? field.options[field.options.selectedIndex].value : field.value;
 
-				if( !(((value.length == 0) && optional) || vldcb(value)) )
+				if( !(((value.length == 0) && optional) || vldcb(value, vargs)) )
 				{
 					// invalid
 					field.className += ' cbi-input-invalid';
diff --git a/libs/web/luasrc/cbi.lua b/libs/web/luasrc/cbi.lua
index 403935aec1..6c9e7a544f 100644
--- a/libs/web/luasrc/cbi.lua
+++ b/libs/web/luasrc/cbi.lua
@@ -1358,20 +1358,35 @@ end
 
 -- Validate the form value
 function AbstractValue.validate(self, value)
-	if self.datatype and value and datatypes[self.datatype] then
-		if type(value) == "table" then
-			local v
-			for _, v in ipairs(value) do
-				if v and #v > 0 and not datatypes[self.datatype](v) then
-					return nil
-				end
+	if self.datatype and value then
+		local args = { }
+		local dt, ar = self.datatype:match("^(%w+)%(([^%(%)]+)%)")
+
+		if dt and ar then
+			local a
+			for a in ar:gmatch("[^%s,]+") do
+				args[#args+1] = a
 			end
 		else
-			if not datatypes[self.datatype](value) then
-				return nil
+			dt = self.datatype
+		end
+
+		if dt and datatypes[dt] then
+			if type(value) == "table" then
+				local v
+				for _, v in ipairs(value) do
+					if v and #v > 0 and not datatypes[dt](v, unpack(args)) then
+						return nil
+					end
+				end
+			else
+				if not datatypes[dt](value, unpack(args)) then
+					return nil
+				end
 			end
 		end
 	end
+
 	return value
 end
 
diff --git a/libs/web/luasrc/cbi/datatypes.lua b/libs/web/luasrc/cbi/datatypes.lua
index f8d8153779..2fdb5802c4 100644
--- a/libs/web/luasrc/cbi/datatypes.lua
+++ b/libs/web/luasrc/cbi/datatypes.lua
@@ -208,3 +208,15 @@ end
 function uciname(val)
 	return (val:match("^[a-zA-Z0-9_]+$") ~= nil)
 end
+
+function range(val, min, max)
+	val = tonumber(val)
+	min = tonumber(min)
+	max = tonumber(max)
+
+	if val ~= nil and min ~= nil and max ~= nil then
+		return ((val >= min) and (val <= max))
+	end
+
+	return false
+end