3 files changed, 64 insertions, 0 deletions

diff --git a/libs/uvl/luasrc/uvl.lua b/libs/uvl/luasrc/uvl.lua
index 683d7a9bb..8275dbbe1 100644
--- a/libs/uvl/luasrc/uvl.lua
+++ b/libs/uvl/luasrc/uvl.lua
@@ -334,6 +334,30 @@ function UVL._validate_option( self, option, nodeps )
 					return false, option:error(ERR.OPT_DATATYPE(option, dt))
 				end
 			end
+			
+			if option:scheme('minlength') then
+				if #val < option:scheme('minlength') then
+					return false, option:error(ERR.OPT_RANGE(option))
+				end
+			end
+			
+			if option:scheme('maxlength') then
+				if #val > option:scheme('maxlength') then
+					return false, option:error(ERR.OPT_RANGE(option))
+				end
+			end
+			
+			if option:scheme('minimum') then
+				if val < option:scheme('minimum') then
+					return false, option:error(ERR.OPT_RANGE(option))
+				end
+			end
+			
+			if option:scheme('maximum') then
+				if val > option:scheme('maximum') then
+					return false, option:error(ERR.OPT_RANGE(option))
+				end
+			end
 
 			if not nodeps then
 				local ok, err = dependencies.check( self, option )
@@ -582,6 +606,9 @@ function UVL._parse_var(self, scheme, k, v)
 				t.valueof = type(v2) == "table" and v2 or {v2}
 			elseif k == "required" then
 				t[k] = _bool(v2)
+			elseif k == "minlength" or k == "maxlength"
+			 or k == "minimum" or k == "maximum" then
+				t[k] = tonumber(v2)
 			else
 				t[k] = t[k] or v2
 			end
diff --git a/libs/uvl/luasrc/uvl/errors.lua b/libs/uvl/luasrc/uvl/errors.lua
index 242965ddc..9cd8d19cf 100644
--- a/libs/uvl/luasrc/uvl/errors.lua
+++ b/libs/uvl/luasrc/uvl/errors.lua
@@ -66,6 +66,7 @@ ERRCODES = {
 	{ 'OPT_NOTLIST',	'Option "%i" is defined as list but stored as plain value' },
 	{ 'OPT_DATATYPE',	'Option "%i" has unknown datatype "%1"' },
 	{ 'OPT_NOTFOUND',	'Option "%p.%s.%o" not found in config' },
+	{ 'OPT_RANGE',		'Option "%p.%s.%o" is not within the specified range' },
 
 	{ 'DEP_NOTEQUAL',	'Dependency (%1) failed:\nOption "%i" is not eqal "%2"' },
 	{ 'DEP_NOVALUE',	'Dependency (%1) failed:\nOption "%i" has no value' },
diff --git a/libs/uvl/root/lib/uci/schema/meta/schema b/libs/uvl/root/lib/uci/schema/meta/schema
index 3b78725d5..a4fed422d 100644
--- a/libs/uvl/root/lib/uci/schema/meta/schema
+++ b/libs/uvl/root/lib/uci/schema/meta/schema
@@ -275,6 +275,42 @@ config variable
 	option type		'variable'
 	option datatype	'string'
 	option required	false
+	
+# Variable minimum length (schema.@variable.minlength)
+config variable
+	option name		'minlength'
+	option title	'Minimum length of this variable'
+	option section	'schema.variable'
+	option type		'variable'
+	option datatype	'uint'
+	option required	false
+	
+# Variable maximum length (schema.@variable.minlength)
+config variable
+	option name		'maxlength'
+	option title	'Maximum length of this variable'
+	option section	'schema.variable'
+	option type		'variable'
+	option datatype	'uint'
+	option required	false
+	
+# Variable minimum value (schema.@variable.minlength)
+config variable
+	option name		'minimum'
+	option title	'Minimum value of this variable'
+	option section	'schema.variable'
+	option type		'variable'
+	option datatype	'integer'
+	option required	false
+	
+# Variable maximum value (schema.@variable.minlength)
+config variable
+	option name		'maximum'
+	option title	'Maximum value of this variable'
+	option section	'schema.variable'
+	option type		'variable'
+	option datatype	'integer'
+	option required	false
 
 # Variable validators (schema.@variable.validator)
 config variable