Fun little LDAP server to testing Net::LDAP
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testserver/ldapserver.rb
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testserver/ldapserver.rb
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# $Id$
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#
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# Copyright (C) 2006 by Francis Cianfrocca. All Rights Reserved.
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# Gmail account: garbagecat10.
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#
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# This is an LDAP server intended for unit testing of Net::LDAP.
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# It implements as much of the protocol as we have the stomach
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# to implement but serves static data. Use ldapsearch to test
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# this server!
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#
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# To make this easier to write, we use the Ruby/EventMachine
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# reactor library.
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#
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require 'stringio'
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#------------------------------------------------
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class String
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def read_ber! syntax=nil
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s = StringIO.new self
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pdu = s.read_ber(syntax)
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if pdu
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if s.eof?
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slice!(0, length)
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else
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slice!(0, length - s.read.length)
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end
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end
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pdu
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end
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end
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module LdapServer
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LdapServerAsnSyntax = {
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:application => {
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:constructed => {
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0 => :array, # LDAP BindRequest
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3 => :array # LDAP SearchRequest
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},
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:primitive => {
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2 => :string # ldapsearch sends this to unbind
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}
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},
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:context_specific => {
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:primitive => {
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0 => :string # simple auth (password)
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},
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}
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}
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def post_init
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$logger.info "Accepted LDAP connection"
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@authenticated = false
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end
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def receive_data data
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@data ||= ""; @data << data
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while pdu = @data.read_ber!(LdapServerAsnSyntax)
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begin
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handle_ldap_pdu pdu
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rescue
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$logger.error "closing connection due to error #{$!}"
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close_connection
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end
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end
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end
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def handle_ldap_pdu pdu
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tag_id = pdu[1].ber_identifier
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case tag_id
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when 0x60
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handle_bind_request pdu
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when 0x63
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handle_search_request pdu
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when 0x42
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# bizarre thing, it's a null object (primitive application-2)
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# sent by ldapsearch to request an unbind (or a kiss-off, not sure which)
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close_connection_after_writing
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else
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$logger.error "received unknown packet-type #{tag_id}"
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close_connection_after_writing
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end
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end
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def handle_bind_request pdu
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# TODO, return a proper LDAP error instead of blowing up on version error
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if pdu[1][0] != 3
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send_ldap_response 0, pdu[0].to_i, 2, "", "We only support version 3"
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elsif pdu[1][1] != "cn=bigshot,dc=bayshorenetworks,dc=com"
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send_ldap_response 0, pdu[0].to_i, 48, "", "Who are you?"
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elsif pdu[1][2].ber_identifier != 0x80
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send_ldap_response 0, pdu[0].to_i, 7, "", "Keep it simple, man"
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elsif pdu[1][2] != "opensesame"
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send_ldap_response 0, pdu[0].to_i, 49, "", "Make my day"
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else
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@authenticated = true
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send_ldap_response 0, pdu[0].to_i, 0, pdu[1][1], "I'll take it"
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end
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end
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def handle_search_request pdu
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unless @authenticated
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send_ldap_response 5, pdu[0].to_i, 50, "", "Who did you say you were?"
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return
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end
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treebase = pdu[1][0]
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if treebase != "dc=bigdomain,dc=com"
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send_ldap_response 5, pdu[0].to_i, 32, "", "unknown treebase"
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return
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end
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=begin
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Search Response ::=
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CHOICE {
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entry [APPLICATION 4] SEQUENCE {
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objectName LDAPDN,
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attributes SEQUENCE OF SEQUENCE {
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AttributeType,
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SET OF AttributeValue
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}
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},
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resultCode [APPLICATION 5] LDAPResult
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}
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=end
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send_data( [
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pdu[0].to_i.to_ber, [
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"abcdefghijklmnopqrstuvwxyz".to_ber, [
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[
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"mail".to_ber, ["aaa".to_ber, "bbb".to_ber, "ccc".to_ber].to_ber_set
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].to_ber_sequence,
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[
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"objectclass".to_ber, ["111".to_ber, "222".to_ber, "333".to_ber].to_ber_set
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].to_ber_sequence,
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[
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"cn".to_ber, ["CNCNCNCN".to_ber].to_ber_set
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].to_ber_sequence,
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].to_ber_sequence
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].to_ber_appsequence(4)
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].to_ber_sequence)
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send_data( [
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pdu[0].to_i.to_ber, [
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ".to_ber, [
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[
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"mail".to_ber, ["aaa".to_ber, "bbb".to_ber, "ccc".to_ber].to_ber_set
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].to_ber_sequence,
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[
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"objectclass".to_ber, ["111".to_ber, "222".to_ber, "333".to_ber].to_ber_set
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].to_ber_sequence,
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[
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"cn".to_ber, ["CNCNCNCN".to_ber].to_ber_set
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].to_ber_sequence,
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].to_ber_sequence
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].to_ber_appsequence(4)
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].to_ber_sequence)
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send_ldap_response 5, pdu[0].to_i, 0, "", "Was that what you wanted?"
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end
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def send_ldap_response pkt_tag, msgid, code, dn, text
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send_data( [msgid.to_ber, [code.to_ber, dn.to_ber, text.to_ber].to_ber_appsequence(pkt_tag) ].to_ber )
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end
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end
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#------------------------------------------------
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if __FILE__ == $0
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require 'rubygems'
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require 'eventmachine'
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require 'logger'
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$logger = Logger.new $stderr
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$logger.info "adding ../lib to loadpath, to pick up dev version of Net::LDAP."
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$:.unshift "../lib"
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require 'netber'
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require 'ldappdu'
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require 'netldap'
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require 'netldapfilter'
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EventMachine.run {
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$logger.info "starting LDAP server on 127.0.0.1 port 3890"
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EventMachine.start_server "127.0.0.1", 3890, LdapServer
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EventMachine.add_periodic_timer 60, proc {$logger.info "heartbeat"}
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}
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end
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