added the ability to do a delete_tree

Author: Chris Dwan

Gemfile

@@ -0,0 +1,2 @@
+source :rubygems
+gemspec

Gemfile.lock

@@ -0,0 +1,38 @@
+PATH
+  remote: .
+  specs:
+    net-ldap (0.2.20110317223538)
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    diff-lcs (1.1.3)
+    flexmock (0.9.0)
+    hoe (2.12.3)
+      rake (~> 0.8)
+    hoe-gemspec (1.0.0)
+      hoe (>= 2.2.0)
+    hoe-git (1.4.1)
+      hoe (>= 2.2.0)
+    metaid (1.0)
+    rake (0.9.2.2)
+    rspec (2.7.0)
+      rspec-core (~> 2.7.0)
+      rspec-expectations (~> 2.7.0)
+      rspec-mocks (~> 2.7.0)
+    rspec-core (2.7.1)
+    rspec-expectations (2.7.0)
+      diff-lcs (~> 1.1.2)
+    rspec-mocks (2.7.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  flexmock (~> 0.9.0)
+  hoe (>= 2.9.1)
+  hoe-gemspec (~> 1)
+  hoe-git (~> 1)
+  metaid (~> 1)
+  net-ldap!
+  rspec (~> 2.0)

lib/net/ber/core_ext/array.rb

@@ -79,4 +79,16 @@ def to_ber_oid
     oid = ary.pack("w*")
     [6, oid.length].pack("CC") + oid
   end
+
+  ##
+  # Converts an array into a set of ber control codes
+  # The expected format is [[control_oid, criticality, control_value(optional)]]
+  #   [['1.2.840.113556.1.4.805',true]]
+  #
+  def to_ber_control
+    ary = self.collect do |control_sequence|
+      control_sequence.collect{|element| element.to_ber}.to_ber_sequence
+    end
+    ary.to_ber_sequence #putting this on a new line to make it more readable.
+  end
 end

lib/net/ldap.rb

@@ -1022,6 +1022,19 @@ def delete(args)
     @result == 0
   end
 
+  # Delete an entry from the LDAP directory along with all subordinate entries.
+  # the regular delete method will fail to delete an entry if it has subordinate
+  # entries. This method sends an extra control code to tell the LDAP server
+  # to do a tree delete. ('1.2.840.113556.1.4.805')
+  #
+  # Returns True or False to indicate whether the delete succeeded. Extended
+  # status information is available by calling #get_operation_result.
+  #
+  #  dn = "mail=deleteme@example.com, ou=people, dc=example, dc=com"
+  #  ldap.delete_tree :dn => dn
+  def delete_tree(args)
+    delete(args.merge(:control_codes => [['1.2.840.113556.1.4.805',true]]))
+  end
   # This method is experimental and subject to change. Return the rootDSE
   # record from the LDAP server as a Net::LDAP::Entry, or an empty Entry if
   # the server doesn't return the record.
@@ -1545,9 +1558,9 @@ def rename args
   #++
   def delete(args)
     dn = args[:dn] or raise "Unable to delete empty DN"
-
+    controls = args.include?(:control_codes) ? args[:control_codes].to_ber_control : nil #use nil so we can compact later
     request = dn.to_s.to_ber_application_string(10)
-    pkt = [next_msgid.to_ber, request].to_ber_sequence
+    pkt = [next_msgid.to_ber, request, controls].compact.to_ber_sequence
     @conn.write pkt
 
     (be = @conn.read_ber(Net::LDAP::AsnSyntax)) && (pdu = Net::LDAP::PDU.new(be)) && (pdu.app_tag == 11) or raise Net::LDAP::LdapError, "response missing or invalid"

spec/unit/ber/core_ext/array_spec.rb

@@ -0,0 +1,14 @@
+require 'spec_helper'
+require 'metaid'
+
+describe Array, "when extended with BER core extensions" do
+
+  it "should correctly convert a control code array" do
+    control_codes = []
+    control_codes << ['1.2.3'.to_ber, true.to_ber].to_ber_sequence
+    control_codes << ['1.7.9'.to_ber, false.to_ber].to_ber_sequence
+    control_codes = control_codes.to_ber_sequence
+    res = [['1.2.3', true],['1.7.9',false]].to_ber_control
+    res.should eq(control_codes)
+  end
+end