// GPG4Browsers - An OpenPGP implementation in javascript
// Copyright (C) 2011 Recurity Labs GmbH
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
/**
* Implementation of the User Attribute Packet (Tag 17)<br/>
* <br/>
* The User Attribute packet is a variation of the User ID packet. It
* is capable of storing more types of data than the User ID packet,
* which is limited to text. Like the User ID packet, a User Attribute
* packet may be certified by the key owner ("self-signed") or any other
* key owner who cares to certify it. Except as noted, a User Attribute
* packet may be used anywhere that a User ID packet may be used.
* <br/>
* While User Attribute packets are not a required part of the OpenPGP
* standard, implementations SHOULD provide at least enough
* compatibility to properly handle a certification signature on the
* User Attribute packet. A simple way to do this is by treating the
* User Attribute packet as a User ID packet with opaque contents, but
* an implementation may use any method desired.
* module packet/user_attribute
* @requires enums
* @module packet/user_attribute
*/
var util = require('../util.js'),
packet = require('./packet.js'),
enums = require('../enums.js');
module.exports = UserAttribute;
/**
* @constructor
*/
function UserAttribute() {
this.tag = enums.packet.userAttribute;
this.attributes = [];
}
/**
* parsing function for a user attribute packet (tag 17).
* @param {String} input payload of a tag 17 packet
*/
UserAttribute.prototype.read = function(bytes) {
var i = 0;
while (i < bytes.length) {
var len = packet.readSimpleLength(bytes.substr(i));
i += len.offset;
this.attributes.push(bytes.substr(i, len.len));
i += len.len;
}
};