Enable more sanity checks for Password Changing page

libs/cbi/luasrc/cbi.lua

@@ -287,6 +287,7 @@ end
 function SimpleForm.field(self, class, ...)
 	if instanceof(class, AbstractValue) then
 		local obj  = class(self, ...)
+		obj.track_missing = true
 		self:append(obj)
 		return obj
 	else
@@ -616,6 +617,7 @@ function AbstractValue.__init__(self, map, option, ...)
 	self.tag_missing = {}
 	self.deps = {}
 
+	self.track_missing = false
 	self.rmempty   = false
 	self.default   = nil
 	self.size      = nil
@@ -657,14 +659,14 @@ function AbstractValue.parse(self, section)
 		if not fvalue then
 			self.tag_invalid[section] = true
 		end
-		if fvalue and not (fvalue == self:cfgvalue(section)) then
+		if fvalue and not (fvalue == cvalue) then
 			self:write(section, fvalue)
 		end
 	else							-- Unset the UCI or error
 		if self.rmempty or self.optional then
 			self:remove(section)
-		elseif not fvalue or fvalue ~= cvalue then
-			--self.tag_missing[section] = true
+		elseif self.track_missing and not fvalue or fvalue ~= cvalue then
+			self.tag_missing[section] = true
 		end
 	end
 end

libs/cbi/luasrc/view/cbi/simpleform.htm

@@ -29,6 +29,12 @@ $Id$
 		</fieldset>
 		<br />
 	</div>
+<%- if self.message then %>
+	<div><%=self.message%></div>
+<%- end %>
+<%- if self.errmessage then %>
+	<div class="error"><%=self.errmessage%></div>
+<%- end %>	
 	<div>
 <%- if self.submit ~= false then %>
 		<input class="cbi-button-save" type="submit" value="

modules/admin-full/luasrc/model/cbi/admin_system/passwd.lua

@@ -27,16 +27,15 @@ end
 function f.handle(self, state, data)
 	if state == FORM_VALID then
 		local stat = luci.sys.user.setpasswd("root", data.pw1) == 0
-		local x = f:field(DummyValue, "_stat")
 		
 		if stat then
-			x.value = translate("a_s_changepw_changed")
+			f.message = translate("a_s_changepw_changed")
 		else
-			x.value = translate("unknownerror")
+			f.errmessage = translate("unknownerror")
 		end
 		
-		pw1.render = function() end
-		pw2.render = pw1.render
+		data.pw1 = nil
+		data.pw2 = nil
 	end
 	return true
 end