Class: Ldaptic::Entry

Inherits:
Object
  • Object
show all
Defined in:
lib/ldaptic/entry.rb

Overview

When a new Ldaptic namespace is created, a Ruby class hierarchy is contructed that mirrors the server’s object classes. Ldaptic::Entry serves as the base class for this hierarchy.

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = {}) ⇒ Entry

Returns a new instance of Entry.



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# File 'lib/ldaptic/entry.rb', line 171

def initialize(data = {})
  Ldaptic::Errors.raise(TypeError.new("abstract class initialized")) if self.class.oid.nil? || self.class.abstract?
  @attributes = {}
  data = data.dup
  if dn = data.delete('dn') || data.delete(:dn)
    dn = dn.first if dn.kind_of?(Array)
    self.dn = dn
  end
  merge_attributes(data)
  @attributes['objectClass'] ||= []
  @attributes['objectClass'].insert(0, *self.class.object_classes).uniq!
  common_initializations
  after_build
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

Delegates to read_attribute or write_attribute. Pops an element out of its set if the attribute is marked SINGLE-VALUE.



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# File 'lib/ldaptic/entry.rb', line 413

def method_missing(method, *args, &block)
  attribute = Ldaptic.encode(method)
  if attribute[-1] == ?=
    attribute.chop!
    if may_must(attribute)
      return write_attribute(attribute, *args, &block)
    end
  elsif attribute[-1] == ??
    attribute.chop!
    if may_must(attribute)
      if args.empty?
        return !read_attribute(attribute).empty?
      else
        return args.flatten.any? {|arg| compare(attribute, arg)}
      end
    end
  elsif attribute =~ /\A(.*)-before-type-cast\z/ && may_must($1)
    return read_attribute($1, *args, &block)
  elsif may_must(attribute)
    return read_attribute(attribute, *args, &block).one
  end
  super(method, *args, &block)
end

Class Attribute Details

.descObject (readonly)

Returns the value of attribute desc.



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# File 'lib/ldaptic/entry.rb', line 17

def desc
  @desc
end

.namespaceObject (readonly)

Returns the value of attribute namespace.



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# File 'lib/ldaptic/entry.rb', line 64

def namespace
  @namespace
end

.oidObject (readonly)

Returns the value of attribute oid.



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# File 'lib/ldaptic/entry.rb', line 17

def oid
  @oid
end

.supObject (readonly)

Returns the value of attribute sup.



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# File 'lib/ldaptic/entry.rb', line 17

def sup
  @sup
end

Instance Attribute Details

#dnObject

Returns the value of attribute dn.



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# File 'lib/ldaptic/entry.rb', line 215

def dn
  @dn
end

Class Method Details

.attributes(all = true) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 109

def attributes(all = true)
  may(all) + must(all)
end

.auxObject



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# File 'lib/ldaptic/entry.rb', line 101

def aux
  if dit_content_rule
    Array(dit_content_rule.aux)
  else
    []
  end
end

.create_accessorsObject

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 38

def create_accessors #:nodoc:
  to_be_evaled = ""
  (may(false) + must(false)).each do |attr|
    if type = namespace.attribute_type(attr)
      names = type.names
    else
      names = [attr]
    end
    names.each do |name|
      method = name.to_s.tr_s('-_', '_-')
      to_be_evaled << <<-RUBY
      def #{method}() read_attribute('#{attr}').one end
      def #{method}=(value) write_attribute('#{attr}', value) end
      RUBY
    end
  end
  class_eval(to_be_evaled, __FILE__, __LINE__)
end

.dit_content_ruleObject



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# File 'lib/ldaptic/entry.rb', line 113

def dit_content_rule
  namespace.dit_content_rule(oid)
end

.has_attribute?(attribute) ⇒ Boolean

Returns:

  • (Boolean)


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# File 'lib/ldaptic/entry.rb', line 33

def has_attribute?(attribute)
  attribute = Ldaptic.encode(attribute)
  may.include?(attribute) || must.include?(attribute)
end

.human_attribute_name(attribute, options = {}) ⇒ Object

Converts an attribute name to a human readable form. For compatibility with ActiveRecord.

L::User.human_attribute_name(:givenName) #=> "Given name"


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# File 'lib/ldaptic/entry.rb', line 131

def human_attribute_name(attribute, options={})
  attribute = Ldaptic.encode(attribute)
  if at = namespace.attribute_type(attribute)
    attribute = at.verbose_name
  end
  attribute = attribute[0..0].upcase + attribute[1..-1]
  attribute.gsub!(/([A-Z])([A-Z][a-z])/) { "#$1 #{$2.downcase}" }
  attribute.gsub!(/([a-z\d])([A-Z])/) { "#$1 #{$2.downcase}" }
  attribute.gsub!(/\b[a-z][A-Z]/) { $&.upcase }
  attribute.gsub!('_', '-')
  attribute
end

.instantiate(attributes) ⇒ Object

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 144

def instantiate(attributes) #:nodoc:
  ocs = attributes["objectClass"].to_a.map {|c| namespace.object_class(c)}
  subclass = (@subclasses.to_a & ocs).detect {|x| !x.auxiliary?}
  if subclass
    return subclass.instantiate(attributes)
  end
  unless structural? || ocs.empty?
    logger.warn "#{name}: invalid object class for #{attributes.inspect}"
  end
  obj = allocate
  obj.instance_variable_set(:@dn, ::Ldaptic::DN([attributes.delete('dn')].flatten.first, obj))
  obj.instance_variable_set(:@original_attributes, attributes)
  obj.instance_variable_set(:@attributes, {})
  obj.instance_eval { common_initializations; after_load }
  obj
end

.ldap_ancestorsObject

An array of classes that make up the inheritance hierarchy.

L::OrganizationalPerson.ldap_ancestors #=> [L::OrganizationalPerson, L::Person, L::Top]


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# File 'lib/ldaptic/entry.rb', line 60

def ldap_ancestors
  ancestors.select {|o| o.respond_to?(:oid) && o.oid }
end

.loggerObject



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# File 'lib/ldaptic/entry.rb', line 22

def logger
  namespace.logger
end

.may(all = true) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 66

def may(all = true)
  if all
    core = []
    nott = []
    ldap_ancestors.reverse.each do |klass|
      core |= Array(klass.may(false))
      nott |= Array(klass.must(false))
    end
    if dit = dit_content_rule
      core.push(*Array(dit.may))
      core -= Array(dit.must)
      core -= Array(dit.not)
    end
    core -= nott
    core
  else
    Array(@may)
  end
end

.model_nameObject

For Active Model compliance. Delegates to #namespace.



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# File 'lib/ldaptic/entry.rb', line 12

def self.model_name
  namespace.model_name
end

.must(all = true) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 86

def must(all = true)
  if all
    core = ldap_ancestors.inject([]) do |memo, klass|
      memo |= Array(klass.must(false))
      memo
    end
    if dit = dit_content_rule
      core.push(*Array(dit.must))
    end
    core
  else
    Array(@must)
  end
end

.namesObject

Returns an array of all names for the object class. Typically the number of names is one, but it is possible for an object class to have aliases.



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# File 'lib/ldaptic/entry.rb', line 29

def names
  Array(@name)
end

.object_classObject



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# File 'lib/ldaptic/entry.rb', line 117

def object_class
  @object_class || names.first
end

.object_classesObject Also known as: objectClass



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# File 'lib/ldaptic/entry.rb', line 121

def object_classes
  ldap_ancestors.map {|a| a.object_class}.compact.reverse.uniq
end

Instance Method Details

#/(*args) ⇒ Object Also known as: find

Searches for a child, given an RDN.



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# File 'lib/ldaptic/entry.rb', line 447

def /(*args)
  search(:base => dn.send(:/, *args), :scope => :base, :limit => true)
end

#[](key) ⇒ Object

If a Hash or a String containing “=” is given, the argument is treated as an RDN and a search for a child is performed. nil is returned if no match is found.

For a singular String or Symbol argument, that attribute is read with read_attribute. Unlike with method_missing, an array is always returned, making this variant useful for metaprogramming.



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# File 'lib/ldaptic/entry.rb', line 467

def [](key)
  if key.kind_of?(Hash) || key =~ /=/
    cached_child(key)
  else
    read_attribute(key)
  end
end

#[]=(key, value) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 475

def []=(key, value)
  if key.kind_of?(Hash) || key =~ /=/
    assign_child(key, value)
  else
    write_attribute(key, value)
  end
end

#add!(key, *values) ⇒ Object

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 343

def add!(key, *values) #:nodoc:
  modify_attribute(:add, key, values)
end

#attribute_namesObject



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# File 'lib/ldaptic/entry.rb', line 361

def attribute_names
  attributes.keys
end

#attributesObject

Returns a hash of attributes.



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# File 'lib/ldaptic/entry.rb', line 284

def attributes
  (@original_attributes||{}).merge(@attributes).keys.inject({}) do |hash, key|
    hash[key] = read_attribute(key)
    hash
  end
end

#auxObject



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# File 'lib/ldaptic/entry.rb', line 369

def aux
  self['objectClass'].map {|c| namespace.object_class(c)} - self.class.ldap_ancestors
end

#changesObject



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# File 'lib/ldaptic/entry.rb', line 291

def changes
  @attributes.reject do |k, v|
    (@original_attributes || {})[k].to_a == v
  end.keys.inject({}) do |hash, key|
    hash[key] = read_attribute(key)
    hash
  end
end

#compare(key, value) ⇒ Object

Compare an attribute to see if it has a given value. This happens at the server.



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# File 'lib/ldaptic/entry.rb', line 357

def compare(key, value)
  namespace.compare(dn, key, value)
end

#deleteObject

Deletes the object from the server. If #save is invoked afterwards, the entry will be recreated.



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# File 'lib/ldaptic/entry.rb', line 561

def delete
  namespace.delete(dn)
  @attributes = (@original_attributes||{}).merge(@attributes)
  @original_attributes = nil
  self
end

#delete!(key, *values) ⇒ Object

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 351

def delete!(key, *values) #:nodoc:
  modify_attribute(:delete, key, values)
end

#destroyObject

Alias for #delete.



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# File 'lib/ldaptic/entry.rb', line 569

def destroy
  delete
end

#errorsObject



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# File 'lib/ldaptic/entry.rb', line 488

def errors
  @errors ||= Ldaptic::ErrorSet.new(self)
end

#fetch(dn = self.dn, options = {}) ⇒ Object

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 453

def fetch(dn = self.dn, options = {}) #:nodoc:
  if dn.kind_of?(Hash)
    dn = self.dn/dn
  end
  namespace.fetch(dn, options)
end

#inspectObject



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# File 'lib/ldaptic/entry.rb', line 241

def inspect
  str = "#<#{self.class.inspect} #{dn}"
  (@original_attributes||{}).merge(@attributes).each do |k, values|
    next if values.empty?
    s = (values.size == 1 ? "" : "s")
    at = namespace.attribute_type(k)
    syntax = namespace.attribute_syntax(k)
    if at && syntax && !syntax.x_not_human_readable? && syntax.desc != "Octet String"
      str << " " << k << ": " << values.inspect[1..-2]
    else
      str << " " << k << ": "
      if !at
        str << "(unknown attribute)"
      elsif !syntax
        str << "(unknown type)"
      else
        str << "(" << values.size.to_s << " binary value" << s << ")"
      end
    end
  end
  str << ">"
end

#invalid?(*args) ⇒ Boolean

Inverse of #valid?

Returns:

  • (Boolean)


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# File 'lib/ldaptic/entry.rb', line 499

def invalid?(*args)
  !valid?(*args)
end

#ldap_ancestorsObject



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# File 'lib/ldaptic/entry.rb', line 365

def ldap_ancestors
  self.class.ldap_ancestors | objectClass.map {|c|namespace.object_class(c)}
end

#loggerObject



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# File 'lib/ldaptic/entry.rb', line 206

def logger
  self.class.logger
end

#may(include_aliases = false) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 385

def may(include_aliases = false)
  attrs = (self.class.may + aux.map {|a| a.may(false)}.flatten).uniq - must
  if include_aliases
    attrs.map do |attr|
      type = namespace.attribute_type(attr)
      type ? type.names : attr
    end.flatten
  else
    attrs
  end
end

#may_must(attribute) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 397

def may_must(attribute)
  attribute = Ldaptic.encode(attribute)
  if must(true).include?(attribute)
    :must
  elsif may(true).include?(attribute)
    :may
  end
end

#merge_attributes(data) ⇒ Object Also known as: attributes=



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# File 'lib/ldaptic/entry.rb', line 186

def merge_attributes(data)
  # If it's a HashWithIndifferentAccess (eg, params in Rails), convert it
  # to a Hash with symbolic keys.  This causes the underscore/hyphen
  # translation to take place in write_attribute.  Form helpers in Rails
  # use a method name to read data,
  if defined?(::HashWithIndifferentAccess) && data.is_a?(HashWithIndifferentAccess)
    data = data.symbolize_keys
  end
  data.each do |key, value|
    write_attribute(key, value)
  end
end

#modify_attributes(mods) ⇒ Object

Commit an array of modifications directly to LDAP, without updating the local object.



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# File 'lib/ldaptic/entry.rb', line 338

def modify_attributes(mods) #:nodoc:
  namespace.modify(dn, mods)
  self
end

#must(include_aliases = false) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 373

def must(include_aliases = false)
  attrs = (self.class.must + aux.map {|a| a.must(false)}.flatten).uniq
  if include_aliases
    attrs.map do |attr|
      type = namespace.attribute_type(attr)
      type ? type.names : attr
    end.flatten
  else
    attrs
  end
end

#namespaceObject

A link back to the namespace.



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# File 'lib/ldaptic/entry.rb', line 202

def namespace
  @namespace || self.class.namespace
end

#parentObject

The parent object containing this one.



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# File 'lib/ldaptic/entry.rb', line 233

def parent
  unless @parent
    @parent = search(:base => dn.parent, :scope => :base, :limit => true)
    @parent.instance_variable_get(:@children)[rdn] = self
  end
  @parent
end

#persisted?Boolean

Has the object been saved before?

Returns:

  • (Boolean)


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# File 'lib/ldaptic/entry.rb', line 484

def persisted?
  !!@original_attributes
end

#rdnObject

The first (relative) component of the distinguished name.



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# File 'lib/ldaptic/entry.rb', line 218

def rdn
  dn && dn.rdn
end

#reloadObject

Refetches the attributes from the server.



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# File 'lib/ldaptic/entry.rb', line 550

def reload
  new = search(:scope => :base, :limit => true)
  @original_attributes = new.instance_variable_get(:@original_attributes)
  @attributes          = new.instance_variable_get(:@attributes)
  @dn                  = Ldaptic::DN(new.dn, self)
  @children            = {}
  self
end

#rename(new_rdn, delete_old = nil) ⇒ Object



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# File 'lib/ldaptic/entry.rb', line 573

def rename(new_rdn, delete_old = nil)
  old_rdn = rdn
  if new_rdn.kind_of?(Ldaptic::DN)
    new_root = new_rdn.parent
    new_rdn = new_rdn.rdn
  else
    new_rdn = Ldaptic::RDN(new_rdn)
    new_root = nil
  end
  if delete_old.nil?
    delete_old = (new_rdn == old_rdn)
  end
  namespace.rename(dn, new_rdn.to_str, delete_old, *[new_root].compact)
  if delete_old
    old_rdn.each do |k, v|
      [@attributes, @original_attributes].each do |hash|
        hash.delete_if {|k2, v2| k.to_s.downcase == k2.to_s.downcase && v.to_s.downcase == v2.to_s.downcase }
        end
    end
  end
  old_dn = Ldaptic::DN(@dn, self)
  @dn = nil
  if new_root
    self.dn = new_root / new_rdn
  else
    self.dn = old_dn.parent / new_rdn
  end
  write_attributes_from_rdn(rdn, @original_attributes)
  if @parent
    children = @parent.instance_variable_get(:@children)
    if child = children.delete(old_rdn)
      children[new_rdn] = child if child == self
    end
  end
  self
end

#replace!(key, *values) ⇒ Object

:nodoc:



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# File 'lib/ldaptic/entry.rb', line 347

def replace!(key, *values) #:nodoc:
  modify_attribute(:replace, key, values)
end

#respond_to?(method) ⇒ Boolean

:nodoc:

Returns:

  • (Boolean)


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# File 'lib/ldaptic/entry.rb', line 406

def respond_to?(method, *) #:nodoc:
  both = may(true) + must(true)
  super || (both + both.map {|x| "#{x}="} + both.map {|x| "#{x}-before-type-cast"}).include?(Ldaptic.encode(method.to_sym))
end

#saveObject

For new objects, does an LDAP add. For existing objects, does an LDAP modify. This only sends the modified attributes to the server. If a server constraint was violated, populates #errors and returns false.



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# File 'lib/ldaptic/entry.rb', line 520

def save
  return false unless valid?
  if persisted?
    namespace.modify(dn, changes)
  else
    namespace.add(dn, changes)
  end
  @original_attributes = (@original_attributes||{}).merge(@attributes)
  @attributes = {}
  true
end

#save!Object

Like #save, but raise an exception if the entry could not be saved.



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# File 'lib/ldaptic/entry.rb', line 533

def save!
  save ? self : raise(EntryNotSaved)
end

#search(options, &block) ⇒ Object

Searches for children. This is identical to Ldaptic::Base#search, only the default base is the current object’s DN.



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# File 'lib/ldaptic/entry.rb', line 439

def search(options, &block)
  if options[:base].kind_of?(Hash)
    options = options.merge(:base => dn/options[:base])
  end
  namespace.search({:base => dn}.merge(options), &block)
end

#to_keyObject

Returns an array containing the DN. For ActiveModel compatibility.



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# File 'lib/ldaptic/entry.rb', line 223

def to_key
  [dn] if persisted?
end

#to_modelObject

Returns self. For ActiveModel compatibility.



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# File 'lib/ldaptic/entry.rb', line 211

def to_model
  self
end

#to_paramObject

Returns the DN. For ActiveModel compatibility.



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# File 'lib/ldaptic/entry.rb', line 228

def to_param
  dn if persisted?
end

#to_sObject



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# File 'lib/ldaptic/entry.rb', line 264

def to_s
  dn || ''
end

#update_attributes(hash) ⇒ Object

Assign the given attribute hash, then #save.



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# File 'lib/ldaptic/entry.rb', line 538

def update_attributes(hash)
  merge_attributes(hash)
  save
end

#update_attributes!(hash) ⇒ Object

Like #update_attributes but raise on failure.



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# File 'lib/ldaptic/entry.rb', line 544

def update_attributes!(hash)
  merge_attributes(hash)
  save!
end

#valid?Boolean

Returns:

  • (Boolean)


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# File 'lib/ldaptic/entry.rb', line 492

def valid?
  errors.clear
  check_server_constraints
  errors.empty?
end