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#--
# CyborgHood, a distributed system management software.
# Copyright (c) 2009-2010 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/>.
#++

require 'delegate'
require 'cyborghood/objects/ldap'
require 'http_headers'

module CyborgHood
class DnsDomain < Delegator
attr_reader :ldap, :name

def initialize(name)
@name = name
raise CyberError.new(:unrecoverable, "objects/dns", "invalid zone name") unless self.is_valid?

# may not exist (if creating a new one)
begin
@ldap = LdapDnsDomain.find(name)
rescue
@ldap = nil
end
end

def self.is_valid?(name)
name =~ /^[a-z0-9.-]+\.[a-z]{2,4}$/
end

def is_valid?
self.class.is_valid?(@name)
end

def hosted?
not @ldap.nil?
end

def managed_by?(user)
@ldap.managers.include? user.ldap.dn
end

def __getobj__
@ldap
end

def self.find_by_manager(user)
list = LdapDnsDomain.find(:all, :attribute => 'manager', :value => user.ldap.dn)
list.collect do |l_dom|
domain = allocate
domain.instance_variable_set("@ldap", l_dom)
end
rescue ActiveLdap::Error => e
raise CyberError.new(:unrecoverable, "db/ldap", e.message)
end
end

class Person < Delegator
attr_reader :ldap

def self.find_by_fingerprint(fingerprint)
list = LdapPerson.find(:all, :attribute => 'keyFingerPrint', :value => fingerprint)
case list.size
when 0
nil
when 1
person = allocate
person.instance_variable_set("@ldap", list.first)
person
else
logger.warn "Multiple users match in database, so i guess there is a mistake. It is safer to skip..."
nil
end
rescue ActiveLdap::Error => e
raise CyberError.new(:unrecoverable, "db/ldap", e.message)
end

def prefered_language(available_languages)
lang_chooser = HTTPHeaders::AcceptLanguage.parse(self.preferredLanguage)
return nil if lang_chooser.nil?
ordered_list = lang_chooser.reduce(available_languages)
ordered_list.empty? ? nil : ordered_list.first.range
end

def __getobj__
@ldap
end
end
end
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