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# Manipulation of LDAP schema data.
#
#--
# $Id: schema.rb,v 1.9 2006/02/08 23:15:17 ianmacd Exp $
#++
# The LDAP module encapsulates the various LDAP-related classes in their own
# namespace.
#
module LDAP
# Retrieve and process information pertaining to LDAP schemas.
#
class Schema < Hash
def initialize(entry)
if( entry )
entry.each do |key, vals|
self[key] = vals
end
end
end
# Return the list of values related to the schema component given in
# +key+. See LDAP::Conn#schema for common values of +key+.
#
def names(key)
self[key].collect{|val| val =~ /NAME\s+'([\w\d_\-]+)'/; $1}
end
# Return the list of attributes in object class +oc+ that are of category
# +at+. +at+ may be the string *MUST*, *MAY* or *SUP*.
#
def attr(oc,at)
self['objectClasses'].each do |s|
if( s =~ /NAME\s+'#{oc}'/ )
case s
when /#{at}\s+\(([\w\d_\-\s\$]+)\)/i then return $1.split("$").collect{|attr| attr.strip}
when /#{at}\s+([\w\d_\-]+)/i then return $1.split("$").collect{|attr| attr.strip}
end
end
end
return nil
end
# Return the list of attributes that an entry with object class +oc+
# _must_ possess.
#
def must(oc)
attr(oc, "MUST")
end
# Return the list of attributes that an entry with object class +oc+
# _may_ possess.
#
def may(oc)
attr(oc, "MAY")
end
# Return the superior object class of object class +oc+.
#
def sup(oc)
attr(oc, "SUP")
end
end
class Conn
# Fetch the schema data for the connection.
#
# If +base+ is given, it gives the base DN for the search. +attrs+, if
# given, is an array of attributes that should be returned from the
# server. The default list is *objectClasses*, *attributeTypes*,
# *matchingRules*, *matchingRuleUse*, *dITStructureRules*,
# *dITContentRules*, *nameForms* and *ldapSyntaxes*.
#
# +sec+ and +usec+ can be used to specify a time-out for the search in
# seconds and microseconds, respectively.
#
def schema(base = nil, attrs = nil, sec = 0, usec = 0)
attrs ||= [
'objectClasses',
'attributeTypes',
'matchingRules',
'matchingRuleUse',
'dITStructureRules',
'dITContentRules',
'nameForms',
'ldapSyntaxes',
]
base ||= root_dse(['subschemaSubentry'], sec, usec)[0]['subschemaSubentry'][0]
base ||= 'cn=schema'
entries = search2(base, LDAP_SCOPE_BASE, '(objectClass=subschema)',
attrs, false, sec, usec)
return Schema.new(entries[0])
end
# Fetch the root DSE (DSA-specific Entry) for the connection. DSA stands
# for Directory System Agent and simply refers to the LDAP server you are
# using.
#
# +attrs+, if given, is an array of attributes that should be returned
# from the server. The default list is *subschemaSubentry*,
# *namingContexts*, *monitorContext*, *altServer*, *supportedControl*,
# *supportedExtension*, *supportedFeatures*, *supportedSASLMechanisms*
# and *supportedLDAPVersion*.
#
# +sec+ and +usec+ can be used to specify a time-out for the search in
# seconds and microseconds, respectively.
#
def root_dse(attrs = nil, sec = 0, usec = 0)
attrs ||= [
'subschemaSubentry',
'namingContexts',
'monitorContext',
'altServer',
'supportedControl',
'supportedExtension',
'supportedFeatures',
'supportedSASLMechanisms',
'supportedLDAPVersion',
]
entries = search2('', LDAP_SCOPE_BASE, '(objectClass=*)',
attrs, false, sec, usec)
return entries
end
end
end
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