]]--
+
+--- UVL - UCI Validation Layer
+-- @class module
+-- @cstyle instance
+
module( "luci.uvl", package.seeall )
require("luci.fs")
require("luci.util")
require("luci.model.uci")
+require("luci.uvl.errors")
require("luci.uvl.datatypes")
+require("luci.uvl.validation")
+require("luci.uvl.dependencies")
-TYPE_SECTION = 0x01
-TYPE_VARIABLE = 0x02
-TYPE_ENUM = 0x03
+TYPE_SCHEME = 0x00
+TYPE_CONFIG = 0x01
+TYPE_SECTION = 0x02
+TYPE_VARIABLE = 0x03
+TYPE_OPTION = 0x04
+TYPE_ENUM = 0x05
-local default_schemedir = "/etc/scheme"
-local function _assert( condition, fmt, ... )
- if not condition then
- return assert( nil, string.format( fmt, ... ) )
- else
- return condition
- end
-end
+--- Boolean; default true;
+-- treat sections found in config but not in scheme as error
+STRICT_UNKNOWN_SECTIONS = true
+
+--- Boolean; default true;
+-- treat options found in config but not in scheme as error
+STRICT_UNKNOWN_OPTIONS = true
+
+--- Boolean; default true;
+-- treat failed external validators as error
+STRICT_EXTERNAL_VALIDATORS = true
+
+--- Boolean; default true;
+-- treat list values stored as options like errors
+STRICT_LIST_TYPE = true
+
+local default_schemedir = "/lib/uci/schema"
+local ERR = luci.uvl.errors
+
+
+--- Object constructor
+-- @class function
+-- @name UVL
+-- @param schemedir Path to the scheme directory (optional)
+-- @return Instance object
UVL = luci.util.class()
function UVL.__init__( self, schemedir )
-
self.schemedir = schemedir or default_schemedir
self.packages = { }
+ self.beenthere = { }
self.uci = luci.model.uci
+ self.err = luci.uvl.errors
+ self.dep = luci.uvl.dependencies
self.datatypes = luci.uvl.datatypes
end
+
+--- Parse given scheme and return the scheme tree.
+-- @param scheme Name of the scheme to parse
+-- @return Table containing the parsed scheme or nil on error
+-- @return String containing the reason for errors (if any)
+function UVL.get_scheme( self, scheme )
+ if not self.packages[scheme] then
+ local ok, err = self:read_scheme( scheme )
+ if not ok then
+ return nil, err
+ end
+ end
+ return self.packages[scheme], nil
+end
+
+--- Validate given configuration, section or option.
+-- @param config Name of the configuration to validate
+-- @param section Name of the section to validate (optional)
+-- @param option Name of the option to validate (optional)
+-- @return Boolean indicating whether the given config validates
+-- @return String containing the reason for errors (if any)
+function UVL.validate( self, config, section, option )
+ if config and section and option then
+ return self:validate_option( config, section, option )
+ elseif config and section then
+ return self:validate_section( config, section )
+ elseif config then
+ return self:validate_config( config )
+ end
+end
+
--- Validate given configuration.
-- @param config Name of the configuration to validate
--- @param scheme Scheme to validate against (optional)
--- @return Boolean indicating weather the given config validates
+-- @return Boolean indicating whether the given config validates
-- @return String containing the reason for errors (if any)
-function UVL.validate( self, config, scheme )
+function UVL.validate_config( self, config )
- if not scheme then
- return false, "No scheme found"
+ if not self.packages[config] then
+ local ok, err = self:read_scheme(config)
+ if not ok then
+ return false, err
+ end
end
- for k, v in pairs( config ) do
- local ok, err = self:validate_section( config, k, scheme )
+ local co = luci.uvl.config( self, config )
+ local sc = { }
- if not ok then
- return ok, err
+ self.beenthere = { }
+
+ if not co:config() then
+ return false, ERR.UCILOAD(co)
+ end
+
+ local function _uci_foreach( type, func )
+ for k, v in pairs(co:config()) do
+ if v['.type'] == type then
+ sc[type] = sc[type] + 1
+ local ok, err = func( k, v )
+ if not ok then co:error(err) end
+ end
end
end
- return true, nil
+ for k, v in pairs( self.packages[config].sections ) do
+ sc[k] = 0
+ _uci_foreach( k,
+ function(s)
+ return self:_validate_section( co:section(s) )
+ end
+ )
+ end
+
+ if STRICT_UNKNOWN_SECTIONS then
+ for k, v in pairs(co:config()) do
+ local so = co:section(k)
+ if not self.beenthere[so:cid()] then
+ co:error(ERR.SECT_UNKNOWN(so))
+ end
+ end
+ end
+
+ for _, k in ipairs(luci.util.keys(sc)) do
+ local so = co:section(k)
+ if so:scheme('required') and sc[k] == 0 then
+ co:error(ERR.SECT_REQUIRED(so))
+ elseif so:scheme('unique') and sc[k] > 1 then
+ co:error(ERR.SECT_UNIQUE(so))
+ end
+ end
+
+ return co:ok(), co:errors()
end
---- Validate given section of given configuration.
+--- Validate given config section.
-- @param config Name of the configuration to validate
--- @param section Key of the section to validate
--- @param scheme Scheme to validate against
--- @return Boolean indicating weather the given config validates
+-- @param section Name of the section to validate
+-- @return Boolean indicating whether the given config validates
-- @return String containing the reason for errors (if any)
-function UVL.validate_section( self, config, section, scheme )
+function UVL.validate_section( self, config, section )
- if not scheme then
- return false, "No scheme found"
+ if not self.packages[config] then
+ local ok, err = self:read_scheme( config )
+ if not ok then
+ return false, err
+ end
end
- for k, v in pairs( config[section] ) do
- local ok, err = self:validate_option( config, section, k, scheme )
+ local co = luci.uvl.config( self, config )
+ local so = co:section( section )
- if not ok then
- return ok, err
- end
+ self.beenthere = { }
+
+ if not co:config() then
+ return false, ERR.UCILOAD(co)
end
- return true, nil
+ if so:config() then
+ return self:_validate_section( so )
+ else
+ return false, ERR.SECT_NOTFOUND(so)
+ end
end
---- Validate given option within section of given configuration.
+--- Validate given config option.
-- @param config Name of the configuration to validate
--- @param section Key of the section to validate
+-- @param section Name of the section to validate
-- @param option Name of the option to validate
--- @param scheme Scheme to validate against
--- @return Boolean indicating weather the given config validates
+-- @return Boolean indicating whether the given config validates
-- @return String containing the reason for errors (if any)
-function UVL.validate_option( self, config, section, option, scheme )
+function UVL.validate_option( self, config, section, option )
+
+ if not self.packages[config] then
+ local ok, err = self:read_scheme( config )
+ if not ok then
+ return false, err
+ end
+ end
+
+ local co = luci.uvl.config( self, config )
+ local so = co:section( section )
+ local oo = so:option( option )
- if type(config) == "string" then
- config = { ["variables"] = { [section] = { [option] = config } } }
+ if not co then
+ return false, oerr:child(ERR.UCILOAD(config))
end
- if not scheme then
- return false, "No scheme found"
+ if so:config() and oo:config() then
+ return self:_validate_option( oo )
+ else
+ return false, ERR.OPT_NOTFOUND(oo)
end
+end
- local sv = scheme.variables[section]
- if not sv then return false, "Requested section not found in scheme" end
- sv = sv[option]
- if not sv then return false, "Requested option not found in scheme" end
+function UVL._validate_section( self, section )
- if not ( config[section] and config[section][option] ) and sv.required then
- return false, "Mandatory variable doesn't have a value"
+ if section:config() then
+ if section:scheme('named') == true and
+ section:config('.anonymous') == true
+ then
+ return false, ERR.SECT_NAMED(section)
+ end
+
+ for _, v in ipairs(section:variables()) do
+ local ok, err = self:_validate_option( v )
+ if not ok then
+ section:error(err)
+ end
+ end
+
+ local ok, err = luci.uvl.dependencies.check( self, section )
+ if not ok then
+ section:error(err)
+ end
+ else
+ return false, ERR.SECT_NOTFOUND(section)
end
- if sv.type then
- if self.datatypes[sv.type] then
- if not self.datatypes[sv.type]( config[section][option] ) then
- return false, "Value of given option doesn't validate"
+ if STRICT_UNKNOWN_OPTIONS and not section:scheme('dynamic') then
+ for k, v in pairs(section:config()) do
+ local oo = section:option(k)
+ if k:sub(1,1) ~= "." and not self.beenthere[oo:cid()] then
+ section:error(ERR.OPT_NOTFOUND(oo))
end
- else
- return false, "Unknown datatype '" .. sv.type .. "' encountered"
end
end
- return true, nil
+ return section:ok(), section:errors()
+end
+
+function UVL._validate_option( self, option, nodeps )
+
+ if not option:scheme() and not option:parent():scheme('dynamic') then
+ return false, option:error(ERR.OPT_UNKNOWN(option))
+
+ elseif option:scheme() then
+ if option:scheme('required') and not option:value() then
+ return false, option:error(ERR.OPT_REQUIRED(option))
+
+ elseif option:value() then
+ local val = option:value()
+
+ if option:scheme('type') == "reference" or
+ option:scheme('type') == "enum"
+ then
+ if not option:scheme('values') or
+ not option:scheme('values')[val]
+ then
+ return false, option:error( ERR.OPT_BADVALUE(
+ option, { val, table.concat(
+ luci.util.keys(option:scheme('values') or {}), ", "
+ ) }
+ ) )
+ end
+ elseif option:scheme('type') == "list" then
+ if type(val) ~= "table" and STRICT_LIST_TYPE then
+ return false, option:error(ERR.OPT_NOTLIST(option))
+ end
+ elseif option:scheme('datatype') then
+ local dt = option:scheme('datatype')
+
+ if self.datatypes[dt] then
+ val = ( type(val) == "table" and val or { val } )
+ for i, v in ipairs(val) do
+ if not self.datatypes[dt]( v ) then
+ return false, option:error(
+ ERR.OPT_INVVALUE(option, {v, dt})
+ )
+ end
+ end
+ else
+ return false, option:error(ERR.OPT_DATATYPE(option, dt))
+ end
+ end
+ end
+
+ if not nodeps then
+ local ok, err = luci.uvl.dependencies.check( self, option )
+ if not ok then
+ option:error(err)
+ end
+ end
+
+ local ok, err = luci.uvl.validation.check( self, option )
+ if not ok and STRICT_EXTERNAL_VALIDATORS then
+ return false, option:error(err)
+ end
+ end
+
+ return option:ok(), option:errors()
end
---- Find all parts of given scheme and construct validation tree
+--- Find all parts of given scheme and construct validation tree.
+-- This is normally done on demand, so you don't have to call this function
+-- by yourself.
-- @param scheme Name of the scheme to parse
--- @return Parsed scheme
function UVL.read_scheme( self, scheme )
+
+ local so = luci.uvl.scheme( self, scheme )
+
local schemes = { }
+ local files = luci.fs.glob(self.schemedir .. '/*/' .. scheme)
+
+ if files then
+ for i, file in ipairs( files ) do
+ if not luci.fs.access(file) then
+ return so:error(ERR.SME_READ(so,file))
+ end
- for i, file in ipairs( luci.fs.glob(self.schemedir .. '/*/' .. scheme) ) do
- _assert( luci.fs.access(file), "Can't access file '%s'", file )
+ local uci = luci.model.uci.cursor()
+ uci:set_confdir( luci.fs.dirname(file) )
- self.uci.set_confdir( luci.fs.dirname(file) )
- self.uci.load( luci.fs.basename(file) )
+ local sd = uci:get_all( luci.fs.basename(file) )
- table.insert( schemes, self.uci.get_all( luci.fs.basename(file) ) )
- end
+ if not sd then
+ return false, ERR.UCILOAD(so)
+ end
+
+ table.insert( schemes, sd )
+ end
- return self:_read_scheme_parts( scheme, schemes )
+ return self:_read_scheme_parts( so, schemes )
+ else
+ return false, so:error(ERR.SME_FIND(so, self.schemedir))
+ end
end
-- Process all given parts and construct validation tree
function UVL._read_scheme_parts( self, scheme, schemes )
- -- helper function to construct identifiers for given elements
- local function _id( c, t )
- if c == TYPE_SECTION then
- return string.format(
- "section '%s.%s'",
- scheme, t.name or '?' )
- elseif c == TYPE_VARIABLE then
- return string.format(
- "variable '%s.%s.%s'",
- scheme, t.section or '?.?', t.name or '?' )
- elseif c == TYPE_ENUM then
- return string.format(
- "enum '%s.%s.%s'",
- scheme, t.variable or '?.?.?', t.value or '?' )
- end
- end
-
-- helper function to check for required fields
local function _req( c, t, r )
for i, v in ipairs(r) do
- _assert( t[v], "Missing required field '%s' in %s", v, _id(c, t) )
+ if not t[v] then
+ return false, ERR.SME_REQFLD({c,t}, v)
+ end
end
+ return true
end
-- helper function to validate references
local function _ref( c, t )
- local k
+ local k, n
if c == TYPE_SECTION then
k = "package"
+ n = 1
elseif c == TYPE_VARIABLE then
k = "section"
+ n = 2
elseif c == TYPE_ENUM then
k = "variable"
+ n = 3
end
local r = luci.util.split( t[k], "." )
- r[1] = ( #r[1] > 0 and r[1] or scheme )
+ r[1] = ( #r[1] > 0 and r[1] or scheme:sid() )
- _assert( #r == c, "Malformed %s reference in %s", k, _id(c, t) )
+ if #r ~= n then
+ return false, ERR.SME_BADREF(scheme, k)
+ end
return r
end
+ -- helper function to read bools
+ local function _bool( v )
+ return ( v == "true" or v == "yes" or v == "on" or v == "1" )
+ end
+
+
+ local ok, err
+
-- Step 1: get all sections
for i, conf in ipairs( schemes ) do
for k, v in pairs( conf ) do
if v['.type'] == 'section' then
- _req( TYPE_SECTION, v, { "name", "package" } )
+ ok, err = _req( TYPE_SECTION, v, { "name", "package" } )
+ if err then return false, scheme:error(err) end
- local r = _ref( TYPE_SECTION, v )
+ local r, err = _ref( TYPE_SECTION, v )
+ if err then return false, scheme:error(err) end
self.packages[r[1]] =
self.packages[r[1]] or {
+ ["name"] = r[1];
["sections"] = { };
["variables"] = { };
}
p.sections[v.name] = p.sections[v.name] or { }
p.variables[v.name] = p.variables[v.name] or { }
- local s = p.sections[v.name]
+ local s = p.sections[v.name]
+ local so = scheme:section(v.name)
for k, v2 in pairs(v) do
if k ~= "name" and k ~= "package" and k:sub(1,1) ~= "." then
- if k:match("^depends") then
- s["depends"] = _assert(
- self:_read_depency( v2, s["depends"] ),
- "Section '%s' in scheme '%s' has malformed " ..
- "depency specification in '%s'",
- v.name or '<nil>', scheme or '<nil>', k
- )
+ if k == "depends" then
+ s.depends = self:_read_dependency( v2, s.depends )
+ if not s.depends then
+ return false, scheme:error(
+ ERR.SME_BADDEP(so, luci.util.serialize_data(s.depends))
+ )
+ end
+ elseif k == "dynamic" or k == "unique" or
+ k == "required" or k == "named"
+ then
+ s[k] = _bool(v2)
else
s[k] = v2
end
end
end
+
+ s.dynamic = s.dynamic or false
+ s.unique = s.unique or false
+ s.required = s.required or false
+ s.named = s.named or false
end
end
end
for k, v in pairs( conf ) do
if v['.type'] == "variable" then
- _req( TYPE_VARIABLE, v, { "name", "type", "section" } )
+ ok, err = _req( TYPE_VARIABLE, v, { "name", "section" } )
+ if err then return false, scheme:error(err) end
- local r = _ref( TYPE_VARIABLE, v )
+ local r, err = _ref( TYPE_VARIABLE, v )
+ if err then return false, scheme:error(err) end
- local p = _assert( self.packages[r[1]],
- "Variable '%s' in scheme '%s' references unknown package '%s'",
- v.name, scheme, r[1] )
+ local p = self.packages[r[1]]
+ if not p then
+ return false, scheme:error(
+ ERR.SME_VBADPACK({scheme:sid(), '', v.name}, r[1])
+ )
+ end
- local s = _assert( p.variables[r[2]],
- "Variable '%s' in scheme '%s' references unknown section '%s'",
- v.name, scheme, r[2] )
+ local s = p.variables[r[2]]
+ if not s then
+ return false, scheme:error(
+ ERR.SME_VBADSECT({scheme:sid(), '', v.name}, r[2])
+ )
+ end
s[v.name] = s[v.name] or { }
- local t = s[v.name]
+ local t = s[v.name]
+ local so = scheme:section(r[2])
+ local to = so:option(v.name)
- for k, v in pairs(v) do
+ for k, v2 in pairs(v) do
if k ~= "name" and k ~= "section" and k:sub(1,1) ~= "." then
- if k:match("^depends") then
- t["depends"] = _assert(
- self:_read_depency( v, t["depends"] ),
- "Variable '%s' in scheme '%s' has malformed " ..
- "depency specification in '%s'",
- v.name, scheme, k
- )
- elseif k:match("^validator") then
- t["validators"] = _assert(
- self:_read_validator( v, t["validators"] ),
- "Variable '%s' in scheme '%s' has malformed " ..
- "validator specification in '%s'",
- v.name, scheme, k
- )
+ if k == "depends" then
+ t.depends = self:_read_dependency( v2, t.depends )
+ if not t.depends then
+ return false, scheme:error(so:error(
+ ERR.SME_BADDEP(to, luci.util.serialize_data(v2))
+ ))
+ end
+ elseif k == "validator" then
+ t.validators = self:_read_validator( v2, t.validators )
+ if not t.validators then
+ return false, scheme:error(so:error(
+ ERR.SME_BADVAL(to, luci.util.serialize_data(v2))
+ ))
+ end
+ elseif k == "valueof" then
+ local values, err = self:_read_reference( v2 )
+ if err then
+ return false, scheme:error(so:error(
+ ERR.REFERENCE(to, luci.util.serialize_data(v2)):child(err)
+ ))
+ end
+ t.type = "reference"
+ t.values = values
+ elseif k == "required" then
+ t[k] = _bool(v2)
else
- t[k] = v
+ t[k] = t[k] or v2
end
end
end
+
+ t.type = t.type or "variable"
+ t.datatype = t.datatype or "string"
+ t.required = t.required or false
end
end
end
for k, v in pairs( conf ) do
if v['.type'] == "enum" then
- _req( TYPE_ENUM, v, { "value", "variable" } )
+ ok, err = _req( TYPE_ENUM, v, { "value", "variable" } )
+ if err then return false, scheme:error(err) end
- local r = _ref( TYPE_ENUM, v )
+ local r, err = _ref( TYPE_ENUM, v )
+ if err then return false, scheme:error(err) end
+
+ local p = self.packages[r[1]]
+ if not p then
+ return false, scheme:error(
+ ERR.SME_EBADPACK({scheme:sid(), '', '', v.value}, r[1])
+ )
+ end
- local p = _assert( self.packages[r[1]],
- "Enum '%s' in scheme '%s' references unknown package '%s'",
- v.value, scheme, r[1] )
+ local s = p.variables[r[2]]
+ if not s then
+ return false, scheme:error(
+ ERR.SME_EBADSECT({scheme:sid(), '', '', v.value}, r[2])
+ )
+ end
- local s = _assert( p.variables[r[2]],
- "Enum '%s' in scheme '%s' references unknown section '%s'",
- v.value, scheme, r[2] )
+ local t = s[r[3]]
+ if not t then
+ return false, scheme:error(
+ ERR.SME_EBADOPT({scheme:sid(), '', '', v.value}, r[3])
+ )
+ end
- local t = _assert( s[r[3]],
- "Enum '%s' in scheme '%s', section '%s' references " ..
- "unknown variable '%s'",
- v.value, scheme, r[2], r[3] )
- _assert( t.type == "enum",
- "Enum '%s' in scheme '%s', section '%s' references " ..
- "variable '%s' with non enum type '%s'",
- v.value, scheme, r[2], r[3], t.type )
+ local so = scheme:section(r[2])
+ local oo = so:option(r[3])
+ local eo = oo:enum(v.value)
+
+ if t.type ~= "enum" then
+ return false, scheme:error(ERR.SME_EBADTYPE(eo))
+ end
if not t.values then
t.values = { [v.value] = v.title or v.value }
t.values[v.value] = v.title or v.value
end
- if v.default then
- _assert( not t.default,
- "Enum '%s' in scheme '%s', section '%s' redeclares " ..
- "the default value of variable '%s'",
- v.value, scheme, r[2], v.variable )
+ if not t.enum_depends then
+ t.enum_depends = { }
+ end
+ if v.default then
+ if t.default then
+ return false, scheme:error(ERR.SME_EBADDEF(eo))
+ end
t.default = v.value
end
+
+ if v.depends then
+ t.enum_depends[v.value] = self:_read_dependency(
+ v.depends, t.enum_depends[v.value]
+ )
+
+ if not t.enum_depends[v.value] then
+ return false, scheme:error(so:error(oo:error(
+ ERR.SME_BADDEP(eo, luci.util.serialize_data(v.depends))
+ )))
+ end
+ end
end
end
end
return self
end
--- Read a depency specification
-function UVL._read_depency( self, value, deps )
- local parts = luci.util.split( value, "%s*,%s*", nil, true )
- local condition = { }
-
- for i, val in ipairs(parts) do
- local k, v = unpack(luci.util.split( val, "%s*=%s*", nil, true ))
+-- Read a dependency specification
+function UVL._read_dependency( self, values, deps )
+ local expr = "%$?[a-zA-Z0-9_]+"
+ if values then
+ values = ( type(values) == "table" and values or { values } )
+ for _, value in ipairs(values) do
+ local parts = luci.util.split( value, "%s*,%s*", nil, true )
+ local condition = { }
+ for i, val in ipairs(parts) do
+ local k, v = unpack(luci.util.split(val, "%s*=%s*", nil, true))
+
+ if k and (
+ k:match("^"..expr.."%."..expr.."%."..expr.."$") or
+ k:match("^"..expr.."%."..expr.."$") or
+ k:match("^"..expr.."$")
+ ) then
+ condition[k] = v or true
+ else
+ return nil
+ end
+ end
- if k and (
- k:match("^%$?[a-zA-Z0-9_]+%.%$?[a-zA-Z0-9_]+%.%$?[a-zA-Z0-9_]+$") or
- k:match("^%$?[a-zA-Z0-9_]+%.%$?[a-zA-Z0-9_]+$") or
- k:match("^%$?[a-zA-Z0-9_]+$")
- ) then
- condition[k] = v or true
- else
- return nil
+ if not deps then
+ deps = { condition }
+ else
+ table.insert( deps, condition )
+ end
end
end
- if not deps then
- deps = { condition }
- else
- table.insert( deps, condition )
- end
-
return deps
end
-- Read a validator specification
-function UVL._read_validator( self, value, validators )
- local validator
+function UVL._read_validator( self, values, validators )
+ if values then
+ values = ( type(values) == "table" and values or { values } )
+ for _, value in ipairs(values) do
+ local validator
+
+ if value:match("^exec:") then
+ validator = value:gsub("^exec:","")
+ elseif value:match("^lua:") then
+ validator = self:_resolve_function( (value:gsub("^lua:","") ) )
+ end
- if value and value:match("/") and self.datatypes.file(value) then
- validator = value
- else
- validator = self:_resolve_function( value )
+ if validator then
+ if not validators then
+ validators = { validator }
+ else
+ table.insert( validators, validator )
+ end
+ else
+ return nil
+ end
+ end
+
+ return validators
end
+end
- if validator then
- if not validators then
- validators = { validator }
+-- Read a reference specification (XXX: We should validate external configs too...)
+function UVL._read_reference( self, values )
+ local val = { }
+ values = ( type(values) == "table" and values or { values } )
+
+ for _, value in ipairs(values) do
+ local ref = luci.util.split(value, ".")
+
+ if #ref == 2 or #ref == 3 then
+ local co = luci.uvl.config( self, ref[1] )
+ if not co:config() then return false, ERR.UCILOAD(ref[1]) end
+
+ for k, v in pairs(co:config()) do
+ if v['.type'] == ref[2] then
+ if #ref == 2 then
+ if v['.anonymous'] == true then
+ return false, ERR.SME_INVREF('', value)
+ end
+ val[k] = k -- XXX: title/description would be nice
+ elseif v[ref[3]] then
+ val[v[ref[3]]] = v[ref[3]] -- XXX: dito
+ end
+ end
+ end
else
- table.insert( validators, validator )
+ return false, ERR.SME_BADREF('', value)
end
-
- return validators
end
+
+ return val, nil
end
-- Resolve given path
local path = luci.util.split(value, ".")
for i=1, #path-1 do
- local stat, mod = pcall(require, table.concat(path, ".", 1, i))
+ local stat, mod = luci.util.copcall(
+ require, table.concat(path, ".", 1, i)
+ )
+
if stat and mod then
for j=i+1, #path-1 do
if not type(mod) == "table" then
- break;
+ break
end
mod = mod[path[j]]
if not mod then
end
end
end
+
+
+--- Object representation of an uvl item - base class.
+uvlitem = luci.util.class()
+
+function uvlitem.cid(self)
+ return table.concat( self.cref, '.' )
+end
+
+function uvlitem.sid(self)
+ return table.concat( self.sref, '.' )
+end
+
+function uvlitem.scheme(self, opt)
+ local s
+
+ if #self.sref == 4 or #self.sref == 3 then
+ s = self.s
+ .packages[self.sref[1]]
+ .variables[self.sref[2]][self.sref[3]]
+ elseif #self.sref == 2 then
+ s = self.s
+ .packages[self.sref[1]]
+ .sections[self.sref[2]]
+ else
+ s = self.s
+ .packages[self.sref[1]]
+ end
+
+ if s and opt then
+ return s[opt]
+ elseif s then
+ return s
+ end
+end
+
+function uvlitem.config(self, opt)
+ local c
+
+ if #self.cref == 4 or #self.cref == 3 then
+ c = self.c[self.cref[2]][self.cref[3]]
+ elseif #self.cref == 2 then
+ c = self.c[self.cref[2]]
+ else
+ c = self.c
+ end
+
+ if c and opt then
+ return c[opt]
+ elseif c then
+ return c
+ end
+end
+
+function uvlitem.title(self)
+ return self:scheme() and self:scheme('title') or
+ self.cref[3] or self.cref[2] or self.cref[1]
+end
+
+function uvlitem.type(self)
+ if self.t == luci.uvl.TYPE_CONFIG then
+ return 'config'
+ elseif self.t == luci.uvl.TYPE_SECTION then
+ return 'section'
+ elseif self.t == luci.uvl.TYPE_OPTION then
+ return 'option'
+ elseif self.t == luci.uvl.TYPE_ENUM then
+ return 'enum'
+ end
+end
+
+function uvlitem.error(self, ...)
+ if not self.e then
+ local errconst = { ERR.CONFIG, ERR.SECTION, ERR.OPTION, ERR.OPTION }
+ self.e = errconst[#self.cref]( self )
+ end
+
+ return self.e:child( ... )
+end
+
+function uvlitem.errors(self)
+ return self.e
+end
+
+function uvlitem.ok(self)
+ return not self:errors()
+end
+
+function uvlitem.parent(self)
+ if self.p then
+ return self.p
+ elseif #self.cref == 3 or #self.cref == 4 then
+ return luci.uvl.section( self.s, self.c, self.cref[1], self.cref[2] )
+ elseif #self.cref == 2 then
+ return luci.uvl.config( self.s, self.c, self.cref[1] )
+ else
+ return nil
+ end
+end
+
+
+--- Object representation of a scheme.
+-- @class scheme
+-- @cstyle instance
+-- @name luci.uvl.scheme
+
+--- Scheme instance constructor.
+-- @class function
+-- @name scheme
+-- @param scheme Scheme instance
+-- @param co Configuration data
+-- @param c Configuration name
+-- @return Config instance
+scheme = luci.util.class(uvlitem)
+
+function scheme.__init__(self, scheme, co, c)
+ if not c then
+ c, co = co, nil
+ end
+
+ if not co then
+ local uci = luci.model.uci.cursor()
+ co = uci:get_all(c)
+ end
+
+ self.cref = { c }
+ self.sref = { c }
+ self.c = co
+ self.s = scheme
+ self.t = luci.uvl.TYPE_SCHEME
+end
+
+--- Add an error to scheme.
+-- @return Scheme error context
+function scheme.error(self, ...)
+ if not self.e then self.e = ERR.SCHEME( self ) end
+ return self.e:child( ... )
+end
+
+--- Get an associated config object.
+-- @return Config instance
+function scheme.config(self)
+ local co = luci.uvl.config( self.s, self.cref[1] )
+ co.p = self
+
+ return co
+end
+
+--- Get all section objects associated with this scheme.
+-- @return Table containing all associated luci.uvl.section instances
+function scheme.sections(self)
+ local v = { }
+ if self.s.packages[self.sref[1]].sections then
+ for o, _ in pairs( self.s.packages[self.sref[1]].sections ) do
+ table.insert( v, luci.uvl.option(
+ self.s, self.c, self.cref[1], self.cref[2], o
+ ) )
+ end
+ end
+ return v
+end
+
+--- Get an associated section object.
+-- @param s Section to select
+-- @return Section instance
+function scheme.section(self, s)
+ local so = luci.uvl.section( self.s, self.c, self.cref[1], s )
+ so.p = self
+
+ return so
+end
+
+
+--- Object representation of a config.
+-- @class config
+-- @cstyle instance
+-- @name luci.uvl.config
+
+--- Config instance constructor.
+-- @class function
+-- @name config
+-- @param scheme Scheme instance
+-- @param co Configuration data
+-- @param c Configuration name
+-- @return Config instance
+config = luci.util.class(uvlitem)
+
+function config.__init__(self, scheme, co, c)
+ if not c then
+ c, co = co, nil
+ end
+
+ if not co then
+ local uci = luci.model.uci.cursor()
+ co = uci:get_all(c)
+ end
+
+ self.cref = { c }
+ self.sref = { c }
+ self.c = co
+ self.s = scheme
+ self.t = luci.uvl.TYPE_CONFIG
+end
+
+--- Get all section objects associated with this config.
+-- @return Table containing all associated luci.uvl.section instances
+function config.sections(self)
+ local v = { }
+ if self.s.packages[self.sref[1]].sections then
+ for o, _ in pairs( self.s.packages[self.sref[1]].sections ) do
+ table.insert( v, luci.uvl.option(
+ self.s, self.c, self.cref[1], self.cref[2], o
+ ) )
+ end
+ end
+ return v
+end
+
+--- Get an associated section object.
+-- @param s Section to select
+-- @return Section instance
+function config.section(self, s)
+ local so = luci.uvl.section( self.s, self.c, self.cref[1], s )
+ so.p = self
+
+ return so
+end
+
+
+--- Object representation of a scheme/config section.
+-- @class module
+-- @cstyle instance
+-- @name luci.uvl.section
+
+--- Section instance constructor.
+-- @class function
+-- @name section
+-- @param scheme Scheme instance
+-- @param co Configuration data
+-- @param c Configuration name
+-- @param s Section name
+-- @return Section instance
+section = luci.util.class(uvlitem)
+
+function section.__init__(self, scheme, co, c, s)
+ self.cref = { c, s }
+ self.sref = { c, co[s] and co[s]['.type'] or s }
+ self.c = co
+ self.s = scheme
+ self.t = luci.uvl.TYPE_SECTION
+end
+
+--- Get all option objects associated with this section.
+-- @return Table containing all associated luci.uvl.option instances
+function section.variables(self)
+ local v = { }
+ if self.s.packages[self.sref[1]].variables[self.sref[2]] then
+ for o, _ in pairs(
+ self.s.packages[self.sref[1]].variables[self.sref[2]]
+ ) do
+ table.insert( v, luci.uvl.option(
+ self.s, self.c, self.cref[1], self.cref[2], o
+ ) )
+ end
+ end
+ return v
+end
+
+--- Get an associated option object.
+-- @param o Option to select
+-- @return Option instance
+function section.option(self, o)
+ local oo = luci.uvl.option( self.s, self.c, self.cref[1], self.cref[2], o )
+ oo.p = self
+
+ return oo
+end
+
+
+--- Object representation of a scheme/config option.
+-- @class module
+-- @cstyle instance
+-- @name luci.uvl.option
+
+--- Section instance constructor.
+-- @class function
+-- @name option
+-- @param scheme Scheme instance
+-- @param co Configuration data
+-- @param c Configuration name
+-- @param s Section name
+-- @param o Option name
+-- @return Option instance
+option = luci.util.class(uvlitem)
+
+function option.__init__(self, scheme, co, c, s, o)
+ self.cref = { c, s, o }
+ self.sref = { c, co[s] and co[s]['.type'] or s, o }
+ self.c = co
+ self.s = scheme
+ self.t = luci.uvl.TYPE_OPTION
+end
+
+--- Get the value of this option.
+-- @return The associated configuration value
+function option.value(self)
+ return self:config()
+end
+
+--- Get the associated section information in scheme.
+-- @return Table containing the scheme properties
+function option.section(self)
+ return self.s.packages[self.sref[1]].sections[self.sref[2]]
+end
+
+--- Construct an enum object instance from given or default value.
+-- @param v Value to select
+-- @return Enum instance for selected value
+function option.enum(self, val)
+ return enum(
+ self.s, self.c,
+ self.cref[1], self.cref[2], self.cref[3],
+ val or self:value()
+ )
+end
+
+
+--- Object representation of a enum value.
+-- @class module
+-- @cstyle instance
+-- @name luci.uvl.enum
+
+--- Section instance constructor.
+-- @class function
+-- @name enum
+-- @param scheme Scheme instance
+-- @param co Configuration data
+-- @param c Configuration name
+-- @param s Section name
+-- @param o Enum name
+-- @param v Enum value
+-- @return Enum value instance
+enum = luci.util.class(option)
+
+function enum.__init__(self, scheme, co, c, s, o, v)
+ self.cref = { c, s, o, v }
+ self.sref = { c, co[s] and co[s]['.type'] or s, o, v }
+ self.c = co
+ self.s = scheme
+ self.t = luci.uvl.TYPE_ENUM
+end
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