181 lines
10 KiB
HTML
181 lines
10 KiB
HTML
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<title>JSDoc: Source: packet/literal.js</title>
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<h1 class="page-title">Source: packet/literal.js</h1>
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<section>
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<article>
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<pre class="prettyprint source"><code>// GPG4Browsers - An OpenPGP implementation in javascript
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// Copyright (C) 2011 Recurity Labs GmbH
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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/**
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* Implementation of the Literal Data Packet (Tag 11)<br/>
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* <br/>
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* {@link http://tools.ietf.org/html/rfc4880#section-5.9|RFC4880 5.9}: A Literal Data packet contains the body of a message; data that
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* is not to be further interpreted.
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* @requires enums
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* @requires util
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* @module packet/literal
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*/
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module.exports = Literal;
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var util = require('../util.js'),
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enums = require('../enums.js');
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/**
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* @constructor
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*/
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function Literal() {
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this.format = 'utf8'; // default format for literal data packets
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this.data = ''; // literal data representation as native JavaScript string or bytes
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this.date = new Date();
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}
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/**
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* Set the packet data to a javascript native string, end of line
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* will be normalized to \r\n and by default text is converted to UTF8
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* @param {String} text Any native javascript string
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*/
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Literal.prototype.setText = function (text) {
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// normalize EOL to \r\n
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text = text.replace(/\r/g, '').replace(/\n/g, '\r\n');
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// encode UTF8
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this.data = this.format == 'utf8' ? util.encode_utf8(text) : text;
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};
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/**
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* Returns literal data packets as native JavaScript string
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* with normalized end of line to \n
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* @return {String} literal data as text
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*/
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Literal.prototype.getText = function () {
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// decode UTF8
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var text = util.decode_utf8(this.data);
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// normalize EOL to \n
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return text.replace(/\r\n/g, '\n');
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};
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/**
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* Set the packet data to value represented by the provided string of bytes.
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* @param {String} bytes The string of bytes
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* @param {utf8|binary|text} format The format of the string of bytes
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*/
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Literal.prototype.setBytes = function (bytes, format) {
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this.format = format;
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this.data = bytes;
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};
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/**
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* Get the byte sequence representing the literal packet data
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* @returns {String} A sequence of bytes
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*/
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Literal.prototype.getBytes = function () {
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return this.data;
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};
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/**
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* Parsing function for a literal data packet (tag 11).
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*
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* @param {String} input Payload of a tag 11 packet
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* @param {Integer} position
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* Position to start reading from the input string
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* @param {Integer} len
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* Length of the packet or the remaining length of
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* input at position
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* @return {module:packet/literal} object representation
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*/
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Literal.prototype.read = function (bytes) {
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// - A one-octet field that describes how the data is formatted.
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var format = enums.read(enums.literal, bytes.charCodeAt(0));
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var filename_len = bytes.charCodeAt(1);
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this.filename = util.decode_utf8(bytes.substr(2, filename_len));
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this.date = util.readDate(bytes.substr(2 + filename_len, 4));
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var data = bytes.substring(6 + filename_len);
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this.setBytes(data, format);
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};
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/**
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* Creates a string representation of the packet
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*
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* @param {String} data The data to be inserted as body
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* @return {String} string-representation of the packet
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*/
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Literal.prototype.write = function () {
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var filename = util.encode_utf8("msg.txt");
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var data = this.getBytes();
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var result = '';
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result += String.fromCharCode(enums.write(enums.literal, this.format));
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result += String.fromCharCode(filename.length);
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result += filename;
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result += util.writeDate(this.date);
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result += data;
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return result;
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};
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</code></pre>
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href="public_key.html">crypto/public_key</a></li><li><a href="dsa.html">crypto/public_key/dsa</a></li><li><a href="elgamal.html">crypto/public_key/elgamal</a></li><li><a href="jsbn.html">crypto/public_key/jsbn</a></li><li><a href="rsa.html">crypto/public_key/rsa</a></li><li><a href="random.html">crypto/random</a></li><li><a href="signature.html">crypto/signature</a></li><li><a href="armor.html">encoding/armor</a></li><li><a href="base64.html">encoding/base64</a></li><li><a href="module-enums.html">enums</a></li><li><a href="module-key.html">key</a></li><li><a href="module-keyring.html">keyring</a></li><li><a href="keyring.html">keyring/keyring</a></li><li><a href="localstore.html">keyring/localstore</a></li><li><a href="module-message.html">message</a></li><li><a href="module-openpgp.html">openpgp</a></li><li><a href="module-packet.html">packet</a></li><li><a href="compressed.html">packet/compressed</a></li><li><a href="literal.html">packet/literal</a></li><li><a href="marker.html">packet/marker</a></li><li><a href="one_pass_signature.html">packet/one_pass_signature</a></li><li><a href="packet.html">packet/packet</a></li><li><a href="packetlist.html">packet/packetlist</a></li><li><a href="public_key_.html">packet/public_key</a></li><li><a href="public_key_encrypted_session_key.html">packet/public_key_encrypted_session_key</a></li><li><a href="public_subkey.html">packet/public_subkey</a></li><li><a href="secret_key.html">packet/secret_key</a></li><li><a href="secret_subkey.html">packet/secret_subkey</a></li><li><a href="signature_.html">packet/signature</a></li><li><a href="sym_encrypted_integrity_protected.html">packet/sym_encrypted_integrity_protected</a></li><li><a href="sym_encrypted_session_key.html">packet/sym_encrypted_session_key</a></li><li><a href="symmetrically_encrypted.html">packet/symmetrically_encrypted</a></li><li><a href="trust.html">packet/trust</a></li><li><a href="user_attribute.html">packet/user_attribute</a></li><li><a href="userid.html">packet/userid</a></li><li><a href="keyid.html">type/keyid</a></li><li><a href="mpi.html">type/mpi</a></li><li><a href="s2k.html">type/s2k</a></li><li><a href="module-util.html">util</a></li></ul><h3>Classes</h3><ul><li><a href="JXG.Util.html">JXG.Util</a></li><li><a href="module-cleartext-CleartextMessage.html">cleartext~CleartextMessage</a></li><li><a href="localStorage-LocalStorage.html">config/localStorage~LocalStorage</a></li><li><a href="keyring-Keyring.html">keyring/keyring~Keyring</a></li><li><a href="module-key-Key.html">key~Key</a></li><li><a href="module-key-SubKey.html">key~SubKey</a></li><li><a href="module-key-User.html">key~User</a></li><li><a href="module-message-Message.html">message~Message</a></li><li><a href="compressed-Compressed.html">packet/compressed~Compressed</a></li><li><a href="literal-Literal.html">packet/literal~Literal</a></li><li><a href="marker-Marker.html">packet/marker~Marker</a></li><li><a href="one_pass_signature-OnePassSignature.html">packet/one_pass_signature~OnePassSignature</a></li><li><a href="packetlist-Packetlist.html">packet/packetlist~Packetlist</a></li><li><a href="public_key_encrypted_session_key-PublicKeyEncryptedSessionKey.html">packet/public_key_encrypted_session_key~PublicKeyEncryptedSessionKey</a></li><li><a href="public_key-PublicKey.html">packet/public_key~PublicKey</a></li><li><a href="public_subkey-PublicSubkey.html">packet/public_subkey~PublicSubkey</a></li><li><a href="secret_key-SecretKey.html">packet/secret_key~SecretKey</a></li><li><a href="secret_subkey-SecretSubkey.html">packet/secret_subkey~SecretSubkey</a></li><li><a href="signature-Signature.html">packet/signature~Signature</a></li><li><a href="sym_encrypted_integrity_protected-SymEncryptedIntegrityProtected.html">packet/sym_encrypted_integrity_protected~SymEncryptedIntegrityProtected</a></li><li><a href="sym_encrypted_session_key-SymEncryptedSessionKey.html">packet/sym_encrypted_session_key~SymEncryptedSessionKey</a></li><li><a href="symmetrically_encrypted-SymmetricallyEncrypted.html">packet/symmetrically_encrypted~SymmetricallyEncrypted</a></li><li><a href="trust-Trust.html">packet/trust~Trust</a></li><li><a href="user_attribute-UserAttribute.html">packet/user_attribute~UserAttribute</a></li><li><a href="userid-Userid.html">packet/userid~Userid</a></li><li><a href="keyid-Keyid.html">type/keyid~Keyid</a></li><li><a href="mpi-MPI.html">type/mpi~MPI</a></li><li><a href="s2k-S2K.html">type/s2k~S2K</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.2</a> on Fri Jan 10 2014 09:39:09 GMT-0800 (PST)
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