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

94 lines
1.9 KiB
JavaScript

var assert = require('assert');
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) {
if (!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);
var self = this;
this.__defineGetter__('value', function () {
return self._value || {};
});
}
util.inherits(EntryChangeNotificationControl, Control);
module.exports = EntryChangeNotificationControl;
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';