// 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
/** @module packet/marker */
/**
* @class
* @classdesc Implementation of the strange "Marker packet" (Tag 10)
*
* RFC4880 5.8: An experimental version of PGP used this packet as the Literal
* packet, but no released version of PGP generated Literal packets with this
* tag. With PGP 5.x, this packet has been reassigned and is reserved for use as
* the Marker packet.
*
* Such a packet MUST be ignored when received.
*/
module.exports = function () {
/**
* Parsing function for a literal data packet (tag 10).
*
* @param {String} input Payload of a tag 10 packet
* @param {Integer} position
* Position to start reading from the input string
* @param {Integer} len
* Length of the packet or the remaining length of
* input at position
* @return {module:packet/marker} Object representation
*/
this.read = function(bytes) {
if (bytes.charCodeAt(0) == 0x50 && // P
bytes.charCodeAt(1) == 0x47 && // G
bytes.charCodeAt(2) == 0x50) // P
return true;
// marker packet does not contain "PGP"
return false;
}
}