* luci/libs: more UVL hacking, needs to be rewritten later
This commit is contained in:
Jo-Philipp Wich
parent
f94fb5ac18
commit
4ed96bb95e
2 changed files with 266 additions and 34 deletions
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@ -20,6 +20,8 @@ require("luci.fs")
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require("luci.util")
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require("luci.model.uci")
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require("luci.uvl.datatypes")
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--require("luci.uvl.validation")
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require("luci.uvl.dependencies")
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TYPE_SECTION = 0x01
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TYPE_VARIABLE = 0x02
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@ -27,6 +29,7 @@ TYPE_ENUM = 0x03
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local default_schemedir = "/etc/scheme"
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local function _assert( condition, fmt, ... )
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if not condition then
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return assert( nil, string.format( fmt, ... ) )
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@ -41,28 +44,72 @@ function UVL.__init__( self, schemedir )
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self.schemedir = schemedir or default_schemedir
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self.packages = { }
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self.beenthere = { }
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self.uci = luci.model.uci
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self.datatypes = luci.uvl.datatypes
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end
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function UVL._scheme_section( self, uci, c, s )
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if self.packages[c] and uci[s] then
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return self.packages[c].sections[uci[s][".type"]]
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end
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end
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function UVL._scheme_option( self, uci, c, s, o )
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if self.packages[c] and uci[s] and uci[s][o] then
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return self.packages[c].variables[uci[s][".type"]][o]
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elseif self.packages[c] and self.packages[c].variables[s] then
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return self.packages[c].variables[s][o]
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end
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end
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function UVL._keys( self, tbl )
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local keys = { }
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if tbl then
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for k, _ in luci.util.kspairs(tbl) do
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table.insert( keys, k )
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end
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end
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return keys
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end
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--- Validate given configuration.
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-- @param config Name of the configuration to validate
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-- @param scheme Scheme to validate against (optional)
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-- @return Boolean indicating weather the given config validates
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-- @return String containing the reason for errors (if any)
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function UVL.validate( self, config, scheme )
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function UVL.validate( self, config )
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if not scheme then
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return false, "No scheme found"
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self.uci.set_confdir( self.uci.confdir_default )
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self.uci.load( config )
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local co = self.uci.get_all( config )
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local function _uci_foreach( type, func )
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for k, v in pairs(co) do
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if co[k]['.type'] == type then
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func( k, v )
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end
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end
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end
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for k, v in pairs( config ) do
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local ok, err = self:validate_section( config, k, scheme )
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luci.util.dumptable(co)
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for k, v in pairs( self.packages[config].sections ) do
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_uci_foreach( k,
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function(s)
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local ok, err = self:validate_section( config, s, co )
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if not ok then
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return ok, err
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end
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end
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)
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end
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return true, nil
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end
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@ -73,19 +120,51 @@ end
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-- @param scheme Scheme to validate against
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-- @return Boolean indicating weather the given config validates
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-- @return String containing the reason for errors (if any)
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function UVL.validate_section( self, config, section, scheme )
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function UVL.validate_section( self, config, section, co, nodeps )
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if not scheme then
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return false, "No scheme found"
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if not co then
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self.uci.set_confdir( self.uci.confdir_default )
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self.uci.load( config )
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co = uci.get_all( config )
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end
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for k, v in pairs( config[section] ) do
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local ok, err = self:validate_option( config, section, k, scheme )
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local cs = co[section]
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local scheme = self:_scheme_section( co, config, section )
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if cs then
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--luci.util.dumptable(cs)
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for k, v in pairs(self.packages[config].variables[cs[".type"]]) do
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if k:sub(1,1) ~= "." then
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local ok, err = self:validate_option( config, section, k, co, false, cs[".type"] )
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if not ok then
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print("ERR", err)
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return ok, err
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end
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end
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end
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--local dep_ok = nodeps or luci.uvl.dependencies.check_dependency( self, co, config, section )
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--print( "DEP: ", dep_ok )
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--print( "Validate section: ", config .. '.' .. section, nodeps and '(without depencies)' or '' )
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local ok, err = luci.uvl.dependencies.check_dependency(
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self, co, config, section, nil, true, cs[".type"]
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)
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if ok then
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--print("Validated section!\n\n")
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return true
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else
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print("ERR", "All possible dependencies failed. (Last error was: " .. err .. ")")
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return false, "All possible dependencies failed"
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end
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else
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print( "Error, scheme section '" .. section .. "' not found in data" )
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end
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return true, nil
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end
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@ -97,36 +176,59 @@ end
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-- @param scheme Scheme to validate against
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-- @return Boolean indicating weather the given config validates
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-- @return String containing the reason for errors (if any)
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function UVL.validate_option( self, config, section, option, scheme )
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function UVL.validate_option( self, config, section, option, co, nodeps, section2 )
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if type(config) == "string" then
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config = { ["variables"] = { [section] = { [option] = config } } }
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if not co then
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self.uci.set_confdir( self.uci.confdir_default )
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self.uci.load( config )
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co = uci.get_all( config )
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end
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if not scheme then
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return false, "No scheme found"
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local cs = co[section]
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local sv = self:_scheme_option( co, config, section, option ) or
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self:_scheme_option( co, config, section2, option )
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--print("VOPT", config, section, option )
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if not sv then
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return false, "Requested option '" ..
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config .. '.' .. ( section or section2 ) .. '.' .. option ..
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"' not found in scheme"
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end
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local sv = scheme.variables[section]
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if not sv then return false, "Requested section not found in scheme" end
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sv = sv[option]
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if not sv then return false, "Requested option not found in scheme" end
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if not ( config[section] and config[section][option] ) and sv.required then
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return false, "Mandatory variable doesn't have a value"
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if sv.required and not cs[option] then
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return false, "Mandatory variable '" ..
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config .. '.' .. section .. '.' .. option ..
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"' doesn't have a value"
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end
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if sv.type then
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if self.datatypes[sv.type] then
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if not self.datatypes[sv.type]( config[section][option] ) then
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return false, "Value of given option doesn't validate"
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if sv.type == "enum" and cs[option] then
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if not sv.values or not sv.values[cs[option]] then
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return false, "Value '" .. ( cs[option] or '<nil>' ) .. "' of given option '" ..
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config .. "." .. section .. "." .. option ..
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"' is not defined in enum { " ..
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table.concat(self:_keys(sv.values),", ") .. " }"
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end
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end
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if sv.datatype and cs[option] then
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if self.datatypes[sv.datatype] then
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if not self.datatypes[sv.datatype]( cs[option] ) then
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return false, "Value '" .. ( cs[option] or '<nil>' ) .. "' of given option '" ..
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config .. "." .. ( section or section2 ) .. "." .. option ..
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"' doesn't validate as datatype '" .. sv.datatype .. "'"
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end
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else
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return false, "Unknown datatype '" .. sv.type .. "' encountered"
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return false, "Unknown datatype '" .. sv.datatype .. "' encountered"
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end
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end
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if not nodeps then
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return luci.uvl.dependencies.check_dependency(
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self, co, config, section, option, nil, section2
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)
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end
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return true, nil
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end
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@ -238,7 +340,7 @@ function UVL._read_scheme_parts( self, scheme, schemes )
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for k, v in pairs( conf ) do
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if v['.type'] == "variable" then
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_req( TYPE_VARIABLE, v, { "name", "type", "section" } )
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_req( TYPE_VARIABLE, v, { "name", "section" } )
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local r = _ref( TYPE_VARIABLE, v )
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130
libs/uvl/luasrc/uvl/dependencies.lua
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130
libs/uvl/luasrc/uvl/dependencies.lua
Normal file
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@ -0,0 +1,130 @@
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--[[
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UCI Validation Layer - Main Library
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(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
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(c) 2008 Steven Barth <steven@midlink.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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$Id$
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]]--
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module( "luci.uvl.dependencies", package.seeall )
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local function _assert( condition, fmt, ... )
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if not condition then
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return assert( nil, string.format( fmt, ... ) )
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else
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return condition
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end
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end
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function _parse_reference( r, c, s, o )
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local ref = { }
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local vars = {
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config = c,
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section = s,
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option = o
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}
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for i, v in ipairs(luci.util.split(r,".")) do
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table.insert( ref, (v:gsub( "%$(.+)", function(n) return vars[n] end )) )
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end
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if #ref == 1 and c and s then
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ref = { c, s, ref[1] }
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elseif #ref == 2 and c then
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ref = { c, unpack(ref) }
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elseif #ref ~= 3 then
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print("INVALID REFERENCE: "..#ref, c, s, o)
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ref = nil
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end
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return ref
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end
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function check_dependency( self, uci, conf, sect, optn, nodeps, section2 )
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-- print( "Depency check: ", conf .. '.' .. sect .. ( optn and '.' .. optn or '' ) )
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local key = conf .. '.' .. sect .. ( optn and '.' .. optn or '' )
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if not self.beenthere[key] then
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self.beenthere[key] = true
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else
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print("CIRCULAR DEPENDENCY!")
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return false, "Recursive depency detected"
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end
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-- check for config
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if not self.packages[conf] then self:read_scheme(conf) end
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local item = self.packages[conf]
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-- check for section
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if sect then
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item = _assert( self:_scheme_section( uci, conf, sect ) or self:_scheme_section( uci, conf, section2 ),
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"Unknown section '%s' in scheme '%s' requested",
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sect or '<nil>', conf or '<nil>' )
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-- check for option
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if optn then
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item = _assert( self:_scheme_option( uci, conf, sect, optn ) or
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self:_scheme_option( uci, conf, section2, optn ),
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"Unknown variable '%s' in scheme '%s', section '%s' requested",
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optn or '<nil>', conf or '<nil>', sect or '<nil>' )
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end
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end
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if item.depends then
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local ok = false
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local valid, err
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for _, dep in ipairs(item.depends) do
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--print("DEP:",luci.util.serialize_data(dep))
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local subcondition = true
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for k, v in pairs(dep) do
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-- XXX: better error
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local ref = _assert( _parse_reference(k,conf,sect,optn),
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"Ambiguous dependency reference '" .. k .. "' given" )
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-- XXX: true -> nodeps
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valid, err = self:validate_option(ref[1], ref[2], ref[3], uci, true, section2)
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if valid then
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--print("CHK:",uci[ref[2]][ref[3]],v,unpack(ref))
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if not (
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( type(v) == "boolean" and uci[ref[2]][ref[3]] ) or
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( ref[3] and uci[ref[2]][ref[3]] ) == v
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) then
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subcondition = false
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err = type(v) ~= "boolean"
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and "Option '" .. table.concat( ref, "." ) .. "' doesn't match requested type '" .. v .. '"'
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or "Option '" .. table.concat( ref, "." ) .. "' has no value"
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break
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end
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else
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subcondition = false
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break
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end
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end
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if subcondition then
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-- print( " -> Success (condition matched)\n" )
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return true
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end
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end
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-- print( " -> Failed\n" )
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return false, err
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end
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-- print( " -> Success (no depends)\n" )
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return true
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end
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