libs/cbi: drop UVL, introduce server side datatype validation

2 files changed, 197 insertions, 150 deletions

diff --git a/libs/cbi/luasrc/cbi.lua b/libs/cbi/luasrc/cbi.lua
index e687164c2..a18d37d60 100644
--- a/libs/cbi/luasrc/cbi.lua
+++ b/libs/cbi/luasrc/cbi.lua
@@ -29,12 +29,12 @@ module("luci.cbi", package.seeall)
 require("luci.template")
 local util = require("luci.util")
 require("luci.http")
-require("luci.uvl")
 
 
 --local event      = require "luci.sys.event"
 local fs         = require("nixio.fs")
 local uci        = require("luci.model.uci")
+local datatypes  = require("luci.cbi.datatypes")
 local class      = util.class
 local instanceof = util.instanceof
 
@@ -150,64 +150,6 @@ function load(cbimap, ...)
 	return maps
 end
 
-local function _uvl_validate_section(node, name)
-	local co = node.map:get()
-
-	luci.uvl.STRICT_UNKNOWN_OPTIONS = false
-	luci.uvl.STRICT_UNKNOWN_SECTIONS = false
-
-	local function tag_fields(e)
-		if e.option and node.fields[e.option] then
-			if node.fields[e.option].error then
-				node.fields[e.option].error[name] = e
-			else
-				node.fields[e.option].error = { [name] = e }
-			end
-		elseif e.childs then
-			for _, c in ipairs(e.childs) do tag_fields(c) end
-		end
-	end
-
-	local function tag_section(e)
-		local s = { }
-		for _, c in ipairs(e.childs or { e }) do
-			if c.childs and not c:is('DEPENDENCY') then
-				table.insert( s, c.childs[1]:string() )
-			else
-				table.insert( s, c:string() )
-			end
-		end
-		if #s > 0 then
-			if node.error then
-				node.error[name] = s
-			else
-				node.error = { [name] = s }
-			end
-		end
-	end
-
-	local stat, err = node.map.validator:validate_section(node.config, name, co)
-	if err then
-		node.map.save = false
-		tag_fields(err)
-		tag_section(err)
-	end
-
-end
-
-local function _uvl_strip_remote_dependencies(deps)
-	local clean = {}
-
-	for k, v in pairs(deps) do
-		k = k:gsub("%$config%.%$section%.", "")
-		if k:match("^[%w_]+$") and type(v) == "string" then
-			clean[k] = v
-		end
-	end
-
-	return clean
-end
-
 
 -- Node pseudo abstract class
 Node = class()
@@ -317,9 +259,6 @@ function Map.__init__(self, config, ...)
 	if not self.uci:load(self.config) then
 		error("Unable to read UCI data: " .. self.config)
 	end
-
-	self.validator = luci.uvl.UVL()
-	self.scheme = self.validator:get_scheme(self.config)
 end
 
 function Map.formvalue(self, key)
@@ -827,20 +766,6 @@ end
 
 -- Appends a new option
 function AbstractSection.option(self, class, option, ...)
-	-- Autodetect from UVL
-	if class == true and self.map:get_scheme(self.sectiontype, option) then
-		local vs = self.map:get_scheme(self.sectiontype, option)
-		if vs.type == "boolean" then
-			class = Flag
-		elseif vs.type == "list" then
-			class = DynamicList
-		elseif vs.type == "enum" or vs.type == "reference" then
-			class = ListValue
-		else
-			class = Value
-		end
-	end
-
 	if instanceof(class, AbstractValue) then
 		local obj  = class(self.map, self, option, ...)
 		self:append(obj)
@@ -1060,16 +985,6 @@ function NamedSection.__init__(self, map, section, stype, ...)
 
 	-- Defaults
 	self.addremove = false
-
-	-- Use defaults from UVL
-	if not self.override_scheme and self.map:get_scheme(self.sectiontype) then
-		local vs = self.map:get_scheme(self.sectiontype)
-		self.addremove = not vs.unique and not vs.required
-		self.dynamic   = vs.dynamic
-		self.title       = self.title or vs.title
-		self.description = self.description or vs.descr
-	end
-
 	self.template = "cbi/nsection"
 	self.section = section
 end
@@ -1097,10 +1012,6 @@ function NamedSection.parse(self, novld)
 		AbstractSection.parse_dynamic(self, s)
 		if self.map:submitstate() then
 			Node.parse(self, s)
-
-			if not novld and not self.override_scheme and self.map.scheme then
-				_uvl_validate_section(self, s)
-			end
 		end
 		AbstractSection.parse_optionals(self, s)
 
@@ -1122,19 +1033,9 @@ TypedSection = class(AbstractSection)
 function TypedSection.__init__(self, map, type, ...)
 	AbstractSection.__init__(self, map, type, ...)
 
-	self.template  = "cbi/tsection"
+	self.template = "cbi/tsection"
 	self.deps = {}
 	self.anonymous = false
-
-	-- Use defaults from UVL
-	if not self.override_scheme and self.map:get_scheme(self.sectiontype) then
-		local vs = self.map:get_scheme(self.sectiontype)
-		self.addremove = not vs.unique and not vs.required
-		self.dynamic   = vs.dynamic
-		self.anonymous = not vs.named
-		self.title       = self.title or vs.title
-		self.description = self.description or vs.descr
-	end
 end
 
 -- Return all matching UCI sections for this TypedSection
@@ -1175,10 +1076,6 @@ function TypedSection.parse(self, novld)
 		AbstractSection.parse_dynamic(self, k)
 		if self.map:submitstate() then
 			Node.parse(self, k, novld)
-
-			if not novld and not self.override_scheme and self.map.scheme then
-				_uvl_validate_section(self, k)
-			end
 		end
 		AbstractSection.parse_optionals(self, k)
 	end
@@ -1290,29 +1187,6 @@ function AbstractValue.__init__(self, map, section, option, ...)
 end
 
 function AbstractValue.prepare(self)
-	-- Use defaults from UVL
-	if not self.override_scheme
-	 and self.map:get_scheme(self.section.sectiontype, self.option) then
-		local vs = self.map:get_scheme(self.section.sectiontype, self.option)
-		if self.cast == nil then
-			self.cast = (vs.type == "list") and "list" or "string"
-		end
-		self.title       = self.title or vs.title
-		self.description = self.description or vs.descr
-		if self.default == nil then
-			self.default = vs.default
-		end
-
-		if vs.depends and not self.override_dependencies then
-			for i, deps in ipairs(vs.depends) do
-				deps = _uvl_strip_remote_dependencies(deps)
-				if next(deps) then
-					self:depends(deps)
-				end
-			end
-		end
-	end
-
 	self.cast = self.cast or "string"
 end
 
@@ -1447,7 +1321,8 @@ end
 
 -- Return the UCI value of this object
 function AbstractValue.cfgvalue(self, section)
-	local value = self.map:get(section, self.option)
+	local value = (self.error and self.error[section] == "invalid")
+		and self:formvalue(section) or self.map:get(section, self.option)
 	if not value then
 		return nil
 	elseif not self.cast or self.cast == type(value) then
@@ -1463,7 +1338,13 @@ end
 
 -- Validate the form value
 function AbstractValue.validate(self, value)
-	return value
+	if self.datatype and value and datatypes[self.datatype] then
+		if datatypes[self.datatype](value) then
+			return value
+		end
+	else
+		return value
+	end
 end
 
 AbstractValue.transform = AbstractValue.validate
@@ -1580,26 +1461,6 @@ function ListValue.__init__(self, ...)
 	self.widget = "select"
 end
 
-function ListValue.prepare(self, ...)
-	AbstractValue.prepare(self, ...)
-	if not self.override_scheme
-	 and self.map:get_scheme(self.section.sectiontype, self.option) then
-		local vs = self.map:get_scheme(self.section.sectiontype, self.option)
-		if self.value and vs.valuelist and not self.override_values then
-			for k, v in ipairs(vs.valuelist) do
-				local deps = {}
-				if not self.override_dependencies
-				 and vs.enum_depends and vs.enum_depends[v.value] then
-					for i, dep in ipairs(vs.enum_depends[v.value]) do
-						table.insert(deps, _uvl_strip_remote_dependencies(dep))
-					end
-				end
-				self:value(v.value, v.title or v.value, unpack(deps))
-			end
-		end
-	end
-end
-
 function ListValue.value(self, key, val, ...)
 	if luci.util.contains(self.keylist, key) then
 		return
diff --git a/libs/cbi/luasrc/cbi/datatypes.lua b/libs/cbi/luasrc/cbi/datatypes.lua
new file mode 100644
index 000000000..097f1d92b
--- /dev/null
+++ b/libs/cbi/luasrc/cbi/datatypes.lua
@@ -0,0 +1,186 @@
+--[[
+
+LuCI - Configuration Bind Interface - Datatype Tests
+(c) 2010 Jo-Philipp Wich <xm@subsignal.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+
+]]--
+
+local fs = require "nixio.fs"
+local ip = require "luci.ip"
+local math = require "math"
+local util = require "luci.util"
+
+local tonumber = tonumber
+
+module "luci.cbi.datatypes"
+
+
+function bool( val )
+	if val == "1" or val == "yes" or val == "on" or val == "true" then
+		return true
+	elseif val == "0" or val == "no" or val == "off" or val == "false" then
+		return true
+	elseif val == "" or val == nil then
+		return true
+	end
+
+	return false
+end
+
+function uint( val )
+	local n = tonumber(val)
+	if n ~= nil and math.floor(n) == n and n >= 0 then
+		return true
+	end
+
+	return false
+end
+
+function int( val )
+	local n = tonumber(val)
+	if n ~= nil and math.floor(n) == n then
+		return true
+	end
+
+	return false
+end
+
+function float( val )
+	return ( tonumber(val) ~= nil )
+end
+
+function ipaddr( val )
+	return ip4addr(val) or ip6addr(val)
+end
+
+function ip4addr( val )
+	if val then
+		return ip.IPv4(val) and true or false
+	end
+
+	return false
+end
+
+function ip4prefix( val )
+	val = tonumber(val)
+	return ( val and val >= 0 and val <= 32 )
+end
+
+function ip6addr( val )
+	if val then
+		return ip.IPv6(val) and true or false
+	end
+
+	return false
+end
+
+function ip6prefix( val )
+	val = tonumber(val)
+	return ( val and val >= 0 and val <= 128 )
+end
+
+function port( val )
+	val = tonumber(val)
+	return ( val and val >= 1 and val <= 65535 )
+end
+
+function portrange( val )
+	local p1, p2 = val:match("^(%d+)%-(%d+)$")
+	if p1 and p2 and port(p1) and port(p2) then
+		return true
+	else
+		return port(val)
+	end
+end
+
+function macaddr( val )
+	if val and val:match(
+		"^[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+:" ..
+		 "[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+$"
+	) then
+		local parts = util.split( val, ":" )
+
+		for i = 1,6 do
+			parts[i] = tonumber( parts[i], 16 )
+			if parts[i] < 0 or parts[i] > 255 then
+				return false
+			end
+		end
+
+		return true
+	end
+
+	return false
+end
+
+function hostname( val )
+	if val and val:match("[a-zA-Z0-9_][a-zA-Z0-9_%-%.]*") then
+		return true	-- XXX: ToDo: need better solution
+	end
+
+	return false
+end
+
+function host( val )
+	return hostname(val) or ipaddr(val)
+end
+
+function string( val )
+	return true		-- Everything qualifies as valid string
+end
+
+function directory( val, seen )
+	local s = fs.stat( val )
+	seen = seen or { }
+
+	if s and not seen[s.ino] then
+		seen[s.ino] = true
+		if s.type == "dir" then
+			return true
+		elseif s.type == "lnk" then
+			return directory( fs.readlink(val), seen )
+		end
+	end
+
+	return false
+end
+
+function file( val, seen )
+	local s = fs.stat( val )
+	seen = seen or { }
+
+	if s and not seen[s.ino] then
+		seen[s.ino] = true
+		if s.type == "reg" then
+			return true
+		elseif s.type == "lnk" then
+			return file( fs.readlink(val), seen )
+		end
+	end
+
+	return false
+end
+
+function device( val, seen )
+	local s = fs.stat( val )
+	seen = seen or { }
+
+	if s and not seen[s.ino] then
+		seen[s.ino] = true
+		if s.type == "chr" or s.type == "blk" then
+			return true
+		elseif s.type == "lnk" then
+			return device( fs.readlink(val), seen )
+		end
+	end
+
+	return false
+end