146 lines
4.9 KiB
Vue
146 lines
4.9 KiB
Vue
<template>
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<div></div>
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</template>
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<script>
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//-----------------------------------------------------------------------------
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import Vue from 'vue';
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import Component from 'vue-class-component';
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import _ from 'lodash';
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import bookManager from '../share/bookManager';
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import readerApi from '../../../api/reader';
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import * as utils from '../../../share/utils';
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import * as cryptoUtils from '../../../share/cryptoUtils';
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export default @Component({
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})
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class ServerStorage extends Vue {
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created() {
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this.commit = this.$store.commit;
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}
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async init() {
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if (!this.serverStorageKey) {
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//генерируем новый ключ
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this.generateNewServerStorageKey();
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}
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this.hashedStorageKey = utils.toBase58(await cryptoUtils.sha256(this.serverStorageKey));
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//console.log(await this.storageSet({'id1': {rev: 3, data: {test: 123}}}));
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//console.log(await this.storageGet({'id1': {}}));
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//console.log(await this.storageCheck({'id1': {rev: 1, data: {test: 123}}}));
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}
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get settings() {
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return this.$store.state.reader.settings;
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}
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get serverStorageKey() {
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return this.$store.state.reader.serverStorageKey;
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}
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generateNewServerStorageKey() {
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const key = utils.toBase58(utils.randomArray(32));
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this.commit('reader/setServerStorageKey', key);
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}
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async storageCheck(items) {
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return await this.storageApi('check', items);
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}
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async storageGet(items) {
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return await this.storageApi('get', items);
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}
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async storageSet(items, force) {
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return await this.storageApi('set', items, force);
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}
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async storageApi(action, items, force) {
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const request = {action, items};
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if (force)
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request.force = true;
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const encodedRequest = await this.encodeStorageItems(request);
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return await this.decodeStorageItems(await readerApi.storage(encodedRequest));
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}
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async encodeStorageItems(request) {
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if (!this.hashedStorageKey)
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throw new Error('hashedStorageKey is empty');
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if (!_.isObject(request.items))
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throw new Error('items is not an object');
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let result = Object.assign({}, request);
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let items = {};
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for (const id of Object.keys(request.items)) {
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if (id.indexOf('.') >= 0)
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throw new Error(`encodeStorageItems: bad id - ${id}`);
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const item = request.items[id];
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if (request.action == 'set' && !_.isObject(item.data))
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throw new Error('encodeStorageItems: data is not an object');
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let encoded = Object.assign({}, item);
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if (item.data) {
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const comp = utils.pako.deflate(JSON.stringify(item.data), {level: 1});
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let encrypted = null;
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try {
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encrypted = await cryptoUtils.aesEncrypt(comp, this.serverStorageKey);
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} catch (e) {
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throw new Error('encrypt failed');
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}
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encoded.data = '1' + utils.toBase64(encrypted);
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}
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items[`${this.hashedStorageKey}.${id}`] = encoded;
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}
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result.items = items;
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return result;
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}
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async decodeStorageItems(response) {
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if (!this.hashedStorageKey)
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throw new Error('hashedStorageKey is empty');
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let result = Object.assign({}, response);
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let items = {};
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if (response.items) {
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if (!_.isObject(response.items))
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throw new Error('items is not an object');
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for (const id of Object.keys(response.items)) {
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const item = response.items[id];
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let decoded = Object.assign({}, item);
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if (item.data) {
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if (!_.isString(item.data) || !item.data.length)
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throw new Error('decodeStorageItems: data is not a string');
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if (item.data[0] !== '1')
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throw new Error('decodeStorageItems: unknown data format');
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const a = utils.fromBase64(item.data.substr(1));
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let decrypted = null;
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try {
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decrypted = await cryptoUtils.aesDecrypt(a, this.serverStorageKey);
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} catch (e) {
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throw new Error('decrypt failed');
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}
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decoded.data = JSON.parse(utils.pako.inflate(decrypted, {to: 'string'}));
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}
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const ids = id.split('.');
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if (!(ids.length == 2) || !(ids[0] == this.hashedStorageKey))
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throw new Error(`decodeStorageItems: bad id - ${id}`);
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items[ids[1]] = decoded;
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}
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}
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result.items = items;
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return result;
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}
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}
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//-----------------------------------------------------------------------------
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</script>
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