node-ldapjs/lib/controls/entry_change_notification_c...

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var assert = require('assert-plus')
var util = require('util')
var asn1 = require('asn1')
var Control = require('./control')
/// --- Globals
var BerReader = asn1.BerReader
var BerWriter = asn1.BerWriter
/// --- API
function EntryChangeNotificationControl (options) {
assert.optionalObject(options)
options = options || {}
options.type = EntryChangeNotificationControl.OID
if (options.value) {
if (Buffer.isBuffer(options.value)) {
this.parse(options.value)
} else if (typeof (options.value) === 'object') {
this._value = options.value
} else {
throw new TypeError('options.value must be a Buffer or Object')
}
options.value = null
}
Control.call(this, options)
}
util.inherits(EntryChangeNotificationControl, Control)
Object.defineProperties(EntryChangeNotificationControl.prototype, {
value: {
get: function () { return this._value || {} },
configurable: false
}
})
EntryChangeNotificationControl.prototype.parse = function parse (buffer) {
assert.ok(buffer)
var ber = new BerReader(buffer)
if (ber.readSequence()) {
this._value = {
changeType: ber.readInt()
}
// if the operation was moddn, then parse the optional previousDN attr
if (this._value.changeType === 8) { this._value.previousDN = ber.readString() }
this._value.changeNumber = ber.readInt()
return true
}
return false
}
EntryChangeNotificationControl.prototype._toBer = function (ber) {
assert.ok(ber)
if (!this._value) { return }
var writer = new BerWriter()
writer.startSequence()
writer.writeInt(this.value.changeType)
if (this.value.previousDN) { writer.writeString(this.value.previousDN) }
writer.writeInt(parseInt(this.value.changeNumber, 10))
writer.endSequence()
ber.writeBuffer(writer.buffer, 0x04)
}
EntryChangeNotificationControl.prototype._json = function (obj) {
obj.controlValue = this.value
return obj
}
EntryChangeNotificationControl.OID = '2.16.840.1.113730.3.4.7'
/// --- Exports
module.exports = EntryChangeNotificationControl