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/*
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* This file is part of SYZOJ.
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*
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* Copyright (c) 2016 Menci <huanghaorui301@gmail.com>
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*
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* SYZOJ is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* SYZOJ 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
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with SYZOJ. If not, see <http://www.gnu.org/licenses/>.
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*/
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'use strict';
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Array.prototype.forEachAsync = Array.prototype.mapAsync = async function (fn) {
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return Promise.all(this.map(fn));
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};
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Array.prototype.filterAsync = async function (fn) {
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let a = await this.mapAsync(fn);
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return this.filter((x, i) => a[i]);
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};
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global.ErrorMessage = class ErrorMessage {
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constructor(message, nextUrls, details) {
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this.message = message;
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this.nextUrls = nextUrls || {};
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this.details = details;
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}
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};
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let Promise = require('bluebird');
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let path = require('path');
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let fs = Promise.promisifyAll(require('fs-extra'));
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let util = require('util');
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let renderer = require('moemark-renderer');
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let moment = require('moment');
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let url = require('url');
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let querystring = require('querystring');
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let pygmentize = require('pygmentize-bundled-cached');
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let gravatar = require('gravatar');
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let filesize = require('file-size');
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let AsyncLock = require('async-lock');
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function escapeHTML(s) {
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// Code from http://stackoverflow.com/questions/5251520/how-do-i-escape-some-html-in-javascript/5251551
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return s.replace(/[^0-9A-Za-z ]/g, (c) => {
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return "&#" + c.charCodeAt(0) + ";";
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});
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}
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function highlightPygmentize(code, lang, cb) {
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pygmentize({
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lang: lang,
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format: 'html',
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options: {
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nowrap: true,
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classprefix: 'pl-'
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}
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}, code, (err, res) => {
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if (err || res.toString() === 'undefined') {
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cb(escapeHTML(code));
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} else {
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cb(res);
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}
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});
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}
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renderer.config.highlight = highlightPygmentize;
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module.exports = {
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resolvePath(s) {
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let a = Array.from(arguments);
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a.unshift(__dirname);
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return path.resolve.apply(null, a);
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},
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markdown(obj, keys, noReplaceUI) {
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let XSS = require('xss');
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let CSSFilter = require('cssfilter');
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let whiteList = Object.assign({}, require('xss/lib/default').whiteList);
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delete whiteList.audio;
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delete whiteList.video;
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for (let tag in whiteList) whiteList[tag] = whiteList[tag].concat(['id', 'style', 'class']);
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let xss = new XSS.FilterXSS({
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css: {
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whiteList: Object.assign({}, require('cssfilter/lib/default').whiteList, {
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'vertical-align': true,
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top: true,
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bottom: true,
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left: true,
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right: true
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})
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},
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whiteList: whiteList,
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stripIgnoreTag: true
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});
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let replaceXSS = s => {
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return xss.process(s);
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};
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let replaceUI = s => {
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if (noReplaceUI) return s;
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s = s.split('<pre>').join('<div class="ui existing segment"><pre style="margin-top: 0; margin-bottom: 0; ">').split('</pre>').join('</pre></div>')
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.split('<table>').join('<table class="ui table">')
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.split('<blockquote>').join('<div class="ui message">').split('</blockquote>').join('</div>');
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let cheerio = require('cheerio');
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let $ = cheerio.load('<html><head></head><body></body></html>');
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let body = $('body');
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body.html(s);
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let a = $('img:only-child');
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for (let img of Array.from(a)) {
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if (!img.prev && !img.next) {
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$(img).css('display', 'block');
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$(img).css('margin', '0 auto');
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}
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}
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return body.html();
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};
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return new Promise((resolve, reject) => {
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if (!keys) {
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if (!obj || !obj.trim()) resolve("");
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else renderer(obj, { mathjaxUseHtml: true }, s => {
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resolve(replaceUI(replaceXSS(s)));
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});
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} else {
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let res = obj, cnt = keys.length;
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for (let key of keys) {
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renderer(res[key], { mathjaxUseHtml: true }, (s) => {
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res[key] = replaceUI(replaceXSS(s));
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if (!--cnt) resolve(res);
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});
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}
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}
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});
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},
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formatDate(ts, format) {
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let m = moment(ts * 1000);
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m.locale('eu');
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return m.format(format || 'L H:mm:ss');
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},
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formatTime(x) {
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let sgn = x < 0 ? '-' : '';
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x = Math.abs(x);
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function toStringWithPad(x) {
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x = parseInt(x);
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if (x < 10) return '0' + x.toString();
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else return x.toString();
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}
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return sgn + util.format('%s:%s:%s', toStringWithPad(x / 3600), toStringWithPad(x / 60 % 60), toStringWithPad(x % 60));
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},
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formatSize(x) {
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let res = filesize(x, { fixed: 1 }).calculate();
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if (res.result === parseInt(res.result)) res.fixed = res.result.toString();
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if (res.suffix.startsWith('Byte')) res.suffix = 'B';
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else res.suffix = res.suffix.replace('iB', '');
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return res.fixed + ' ' + res.suffix;
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},
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parseDate(s) {
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return parseInt(+new Date(s) / 1000);
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},
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getCurrentDate() {
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return parseInt(+new Date / 1000);
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},
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makeUrl(req_params, form) {
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let res = '';
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if (!req_params) res = '/';
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else if (req_params.originalUrl) {
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let u = url.parse(req_params.originalUrl);
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res = u.pathname;
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} else {
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if (!Array.isArray(req_params)) req_params = [req_params];
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for (let param of req_params) res += '/' + param;
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}
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let encoded = querystring.encode(form);
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if (encoded) res += '?' + encoded;
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return res;
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},
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escapeHTML: escapeHTML,
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highlight(code, lang) {
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return new Promise((resolve, reject) => {
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highlightPygmentize(code, lang, res => {
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resolve(res);
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});
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});
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},
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gravatar(email, size) {
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return gravatar.url(email, { s: size, d: 'mm' }).replace('www', 'cn');
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},
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async parseTestdata(dir, submitAnswer) {
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if (!await syzoj.utils.isDir(dir)) return null;
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try {
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// Get list of *files*
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let list = await (await fs.readdirAsync(dir)).filterAsync(async x => await syzoj.utils.isFile(path.join(dir, x)));
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let res = [];
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if (!list.includes('data_rule.txt')) {
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res[0] = {};
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res[0].cases = [];
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for (let file of list) {
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let parsedName = path.parse(file);
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if (parsedName.ext === '.in') {
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if (list.includes(`${parsedName.name}.out`)) {
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let o = {
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input: file,
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output: `${parsedName.name}.out`
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};
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if (submitAnswer) o.answer = `${parsedName.name}.out`;
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res[0].cases.push(o);
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}
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if (list.includes(`${parsedName.name}.ans`)) {
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let o = {
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input: file,
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output: `${parsedName.name}.ans`
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};
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if (submitAnswer) o.answer = `${parsedName.name}.out`;
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res[0].cases.push(o);
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}
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}
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}
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res[0].type = 'sum';
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res[0].score = 100;
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res[0].cases.sort((a, b) => {
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function getLastInteger(s) {
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let re = /(\d+)\D*$/;
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let x = re.exec(s);
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if (x) return parseInt(x[1]);
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else return -1;
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}
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return getLastInteger(a.input) - getLastInteger(b.input);
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});
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} else {
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let lines = (await fs.readFileAsync(path.join(dir, 'data_rule.txt'))).toString().split('\r').join('').split('\n').filter(x => x.length !== 0);
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let input, output, answer;
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if (submitAnswer) {
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if (lines.length < 4) throw '无效的数据配置文件（data_rule.txt）。';
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input = lines[lines.length - 3];
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output = lines[lines.length - 2];
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answer = lines[lines.length - 1];
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} else {
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if (lines.length < 3) throw '无效的数据配置文件（data_rule.txt）。';
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input = lines[lines.length - 2];
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output = lines[lines.length - 1];
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}
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for (let s = 0; s < lines.length - (submitAnswer ? 3 : 2); ++s) {
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res[s] = {};
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res[s].cases = [];
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let numbers = lines[s].split(' ').filter(x => x);
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if (numbers[0].includes(':')) {
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let tokens = numbers[0].split(':');
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res[s].type = tokens[0] || 'sum';
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res[s].score = parseFloat(tokens[1]) || (100 / (lines.length - 2));
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numbers.shift();
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} else {
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res[s].type = 'sum';
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res[s].score = 100;
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}
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for (let i of numbers) {
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let testcase = {
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input: input.replace('#', i),
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output: output.replace('#', i)
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};
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if (submitAnswer) testcase.answer = answer.replace('#', i);
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if (testcase.input !== '-' && !list.includes(testcase.input)) throw `找不到文件 ${testcase.input}`;
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if (testcase.output !== '-' && !list.includes(testcase.output)) throw `找不到文件 ${testcase.output}`;
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res[s].cases.push(testcase);
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}
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}
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res = res.filter(x => x.cases && x.cases.length !== 0);
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}
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res.spj = list.some(s => s.startsWith('spj_'));
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return res;
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} catch (e) {
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console.log(e);
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return { error: e };
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}
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},
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ansiToHTML(s) {
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let Convert = require('ansi-to-html');
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let convert = new Convert({ escapeXML: true });
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return convert.toHtml(s);
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},
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paginate(count, currPage, perPage) {
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currPage = parseInt(currPage);
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if (!currPage || currPage < 1) currPage = 1;
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let pageCnt = Math.ceil(count / perPage);
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if (currPage > pageCnt) currPage = pageCnt;
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return {
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currPage: currPage,
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perPage: perPage,
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pageCnt: pageCnt,
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toSQL: () => {
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if (!pageCnt) return '';
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else return ` LIMIT ${(currPage - 1) * perPage},${perPage}`
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}
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};
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},
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removeTitleTag(s) {
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return s.replace(/「[\S\s]+?」/, '');
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},
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md5(data) {
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let crypto = require('crypto');
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|
let md5 = crypto.createHash('md5');
|
|
|
|
|
md5.update(data);
|
|
|
|
|
return md5.digest('hex');
|
|
|
|
|
},
|
|
|
|
|
isValidUsername(s) {
|
|
|
|
|
return /^[a-zA-Z0-9\-\_]+$/.test(s);
|
|
|
|
|
},
|
|
|
|
|
locks: [],
|
|
|
|
|
lock(key, cb) {
|
|
|
|
|
let s = JSON.stringify(key);
|
|
|
|
|
if (!this.locks[s]) this.locks[s] = new AsyncLock();
|
|
|
|
|
return this.locks[s].acquire(s, cb);
|
|
|
|
|
},
|
|
|
|
|
encrypt(buffer, password) {
|
|
|
|
|
if (typeof buffer === 'string') buffer = Buffer.from(buffer);
|
|
|
|
|
let crypto = require('crypto');
|
|
|
|
|
let cipher = crypto.createCipher('aes-256-ctr', password);
|
|
|
|
|
return Buffer.concat([cipher.update(buffer), cipher.final()]);
|
|
|
|
|
},
|
|
|
|
|
decrypt(buffer, password) {
|
|
|
|
|
let crypto = require('crypto');
|
|
|
|
|
let decipher = crypto.createDecipher('aes-256-ctr', password);
|
|
|
|
|
return Buffer.concat([decipher.update(buffer), decipher.final()]);
|
|
|
|
|
},
|
|
|
|
|
async isFile(path) {
|
|
|
|
|
try {
|
|
|
|
|
return (await fs.statAsync(path)).isFile();
|
|
|
|
|
} catch (e) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
async isDir(path) {
|
|
|
|
|
try {
|
|
|
|
|
return (await fs.statAsync(path)).isDirectory();
|
|
|
|
|
} catch (e) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
};
|
