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#--
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# LdapShadows, a Medium-level LDAP Access Library and Tool.
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# Copyright (c) 2009 Marc Dequènes (Duck) <Duck@DuckCorp.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#++
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$KCODE = 'UTF8'
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require 'jcode'
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require 'active_ldap'
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require 'ldap_shadows/activeldap_fixes'
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require 'ldap_shadows/object'
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require 'ldap_shadows/aspect'
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module LdapShadows
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class Shadow
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attr_reader :name
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def initialize(name)
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@name = name
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LdapShadows::LdapObject.mapper = self
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@config = Config.instance
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@object_definitions = {}
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@aspects = {}
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# TODO: should replace @aspects properly one day
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@aspects2 = {}
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end
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def set_shadow_config(shadow_def_raw)
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@shadow_config = @config.parse_and_validate(@name, 'shadow', shadow_def_raw)
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end
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def get_shadow_config
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# TODO: remove this workaround
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@shadow_config[:presentation]
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end
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def add_aspect(aspect_name, aspect_def_raw)
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aspect_def = @config.parse_and_validate(aspect_name, 'aspect', aspect_def_raw)
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aspect_name = aspect_name.to_sym
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@aspects[aspect_name] = aspect_def
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return if @shadow_config_path.nil?
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filename = File.join(@shadow_config_path, "hooks", "aspects", aspect_name.to_s.downcase + ".rb")
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if File.exists?(filename)
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klass_name = "LdapAspect" + aspect_name.to_s.capitalize
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klass_content = File.read(filename)
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begin
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Aspects.module_eval(<<-EOS)
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class #{klass_name} < LdapAspect
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#{klass_content}
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end
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EOS
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rescue
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raise PreProcessingError, _("Could not load Aspect plugin '%s'") % aspect_name
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end
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@aspects2[aspect_name] = Aspects.const_get(klass_name)
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end
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end
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def get_aspect(aspect_name)
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@aspects[aspect_name.to_sym]
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end
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def get_aspect_klass(aspect_name)
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@aspects2[aspect_name.to_sym]
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end
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def self.object_name_to_klass_name(object_name)
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"LdapObject" + object_name.to_s.capitalize
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end
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def load_object(object_name, object_def_raw)
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object_def = @config.parse_and_validate(object_name, 'object', object_def_raw)
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object_name = object_name.to_sym
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klass_name = self.class.object_name_to_klass_name(object_name)
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# create class
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Objects.module_eval(<<-EOS)
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class #{klass_name} < LdapObject; end
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EOS
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# configure class
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klass = find_klass(object_name)
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klass.handle = object_name
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klass.presentation = object_def[:presentation]
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klass.mapper = self
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klass.ldap_mapping object_def[:mapping]
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# store definition for later relations processing
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@object_definitions[object_name] = object_def
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end
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def find_klass(object_name)
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klass_name = self.class.object_name_to_klass_name(object_name)
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return nil unless Objects.const_defined?(klass_name)
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Objects.const_get(klass_name)
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end
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# run it _once_ when all objects are loaded
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def load_relations
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@object_definitions.each_pair do |object_name, object_def|
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object_rel = {}
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object_rel.merge!(object_def[:relations]) if object_def.include?(:relations)
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if object_def[:presentation].has_key?(:allowed_aspects)
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object_def[:presentation][:allowed_aspects].each do |aspect|
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aspect_data = get_aspect(aspect)
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if aspect_data.nil?
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raise PreProcessingError, _("Aspect '%s' is missing") % aspect
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end
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object_rel.merge!(aspect_data[:relations]) if aspect_data.has_key?(:relations) and aspect_data[:relations]
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end
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end
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next if object_rel.empty?
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klass = find_klass(object_name)
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object_relations_info = {}
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object_rel.each_pair do |field_name, rel|
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foreign_klass = find_klass(rel[:object])
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if foreign_klass.nil?
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raise PreProcessingError, _("Relation '%s' for object '%s' is impossible: foreign object '%s' is missing") % [field_name, object_name, rel[:object]]
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end
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rel[:class_name] = foreign_klass.to_s
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case rel[:type]
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when 'belongs_to'
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klass.belongs_to field_name, rel.reject {|key, val| not ActiveLdap::Associations::ClassMethods::VALID_BELONGS_TO_OPTIONS.include?(key) }
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when 'has_many'
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klass.has_many field_name, rel.reject {|key, val| not ActiveLdap::Associations::ClassMethods::VALID_HAS_MANY_OPTIONS.include?(key) }
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else
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raise "bug in '#{object_name}' object relations (wrong type)"
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end
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object_relations_info[field_name] = {
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:foreign_klass => foreign_klass,
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:single_value => ActiveLdap::Base.schema.attribute(rel[:foreign_key]).single_value?,
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:read_only => rel[:read_only] || false
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}
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end
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klass.relations_info = object_relations_info
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end
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end
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def objects
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@object_definitions.keys.collect{|key| key.to_s }.sort
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end
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end
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# default location for mapped objects
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module Objects
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end
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# default location for mapped aspects
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module Aspects
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end
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end
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