105 lines
3.4 KiB
JavaScript
105 lines
3.4 KiB
JavaScript
// 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 3.0 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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* The class that deals with storage of the keyring. Currently the only option is to use HTML5 local storage.
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* @requires config
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* @module keyring/localstore
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* @param {String} prefix prefix for itemnames in localstore
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*/
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module.exports = LocalStore;
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var config = require('../config'),
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keyModule = require('../key.js'),
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util = require('../util.js');
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function LocalStore(prefix) {
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prefix = prefix || 'openpgp-';
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this.publicKeysItem = prefix + this.publicKeysItem;
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this.privateKeysItem = prefix + this.privateKeysItem;
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if (typeof window != 'undefined' && window.localStorage) {
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this.storage = window.localStorage;
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} else {
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this.storage = new (require('node-localstorage').LocalStorage)(config.node_store);
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}
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}
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/*
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* Declare the localstore itemnames
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*/
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LocalStore.prototype.publicKeysItem = 'public-keys';
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LocalStore.prototype.privateKeysItem = 'private-keys';
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/**
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* Load the public keys from HTML5 local storage.
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* @return {Array<module:key~Key>} array of keys retrieved from localstore
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*/
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LocalStore.prototype.loadPublic = function () {
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return loadKeys(this.storage, this.publicKeysItem);
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};
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/**
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* Load the private keys from HTML5 local storage.
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* @return {Array<module:key~Key>} array of keys retrieved from localstore
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*/
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LocalStore.prototype.loadPrivate = function () {
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return loadKeys(this.storage, this.privateKeysItem);
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};
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function loadKeys(storage, itemname) {
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var armoredKeys = JSON.parse(storage.getItem(itemname));
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var keys = [];
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if (armoredKeys !== null && armoredKeys.length !== 0) {
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var key;
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for (var i = 0; i < armoredKeys.length; i++) {
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key = keyModule.readArmored(armoredKeys[i]);
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if (!key.err) {
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keys.push(key.keys[0]);
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} else {
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util.print_debug("Error reading armored key from keyring index: " + i);
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}
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}
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}
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return keys;
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}
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/**
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* Saves the current state of the public keys to HTML5 local storage.
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* The key array gets stringified using JSON
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* @param {Array<module:key~Key>} keys array of keys to save in localstore
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*/
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LocalStore.prototype.storePublic = function (keys) {
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storeKeys(this.storage, this.publicKeysItem, keys);
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};
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/**
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* Saves the current state of the private keys to HTML5 local storage.
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* The key array gets stringified using JSON
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* @param {Array<module:key~Key>} keys array of keys to save in localstore
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*/
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LocalStore.prototype.storePrivate = function (keys) {
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storeKeys(this.storage, this.privateKeysItem, keys);
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};
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function storeKeys(storage, itemname, keys) {
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var armoredKeys = [];
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for (var i = 0; i < keys.length; i++) {
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armoredKeys.push(keys[i].armor());
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}
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storage.setItem(itemname, JSON.stringify(armoredKeys));
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}
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