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#--
# CyborgHood, a distributed system management software.
# Copyright (c) 2009-2011 Marc Dequènes (Duck) <Duck@DuckCorp.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#++

Dir.glob(File.join(File.dirname(__FILE__), "records", "*.rb")).each do |f|
logger.debug "Loading record definition '#{f}'"
require f
end


module CyborgHood
module LibrarianLand
class Records
HIDDEN_ATTRIBUTES = ['objectClass', 'userPassword', 'hasSubordinates', 'entryUUID', 'entryDN', 'structuralObjectClass', 'subschemaSubentry']

def persons(*args)
find_records(LdapPerson, 'uid', *args)
end

def dns_domains(*args)
find_records(LdapDnsDomain, 'cn', *args)
end

protected

# obj_name:
# - nil: return list of objects'names
# - <value>: return object whose primary attribute is equal to <value>
# - :all: return all objects
def find_records(klass, primary_attr, obj_name = nil, options = {})
if obj_name.nil?
klass.find(:all, :attributes => [primary_attr]).collect{|i| i.send(primary_attr) }
elsif obj_name == :search
filter_parts = []
options[:criterias].each do |k, v|
filter_parts << "(#{k}=#{v})"
end
filter = (filter_parts.size == 1) ? filter_parts.first : '(&' + filter_parts.join + ')'

list = klass.find(:all, :filter => filter)
list = index_result(list, primary_attr)
format_result(list, options[:format])
elsif obj_name == :all
list = klass.find(:all)
list = index_result(list, primary_attr)
format_result(list, options[:format])
else
list = klass.find(:all, :attribute => primary_attr, :value => obj_name)
return if list.nil? or list.empty?
return format_result(list.first, options[:format]) if list.size == 1
raise CyberError.new(:unrecoverable, "db/ldap", "broken DB: multiple #{klass} with the same #{primary_attr}")
end
end

def format_value(v)
if v.is_a? Array
v.collect!{|v2| format_value(v2) }
elsif v.is_a? ActiveLdap::DistinguishedName
v.to_s
else
v
end
end

def dh_format_element(element)
obj_attrs = {}
element.attributes.each do |k, v|
next if HIDDEN_ATTRIBUTES.include? k
obj_attrs[k.to_sym] = format_value(v)
end

# temporary until LdapShadows is used
obj_attrs[:dn] = element.dn.to_s

obj_attrs
end

def format_result(list, format = nil)
case format
when :data_hash
if list.is_a? Array
list.collect{|element| dh_format_element(element) }
elsif list.is_a? Hash
result = {}
list.each{|element_name, element| result[element_name] = dh_format_element(element) }
result
else
dh_format_element(list)
end
else
list
end
end

def index_result(list, primary_attr)
idx_list = {}
list.each{|i| idx_list[i.send(primary_attr)] = i }
idx_list
end
end
end # LibrarianLand
end
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