mirror of
https://github.com/hedgedoc/hedgedoc.git
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587 lines
18 KiB
JavaScript
587 lines
18 KiB
JavaScript
//response
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//external modules
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var ejs = require('ejs');
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var fs = require('fs');
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var path = require('path');
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var markdownpdf = require("markdown-pdf");
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var LZString = require('lz-string');
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var S = require('string');
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var shortId = require('shortid');
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var metaMarked = require('meta-marked');
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var querystring = require('querystring');
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var request = require('request');
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var moment = require('moment');
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//core
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var config = require("./config.js");
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var logger = require("./logger.js");
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var models = require("./models");
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//slides
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var md = require('reveal.js/plugin/markdown/markdown');
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//reveal.js
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var slideOptions = {
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separator: '^(\r\n?|\n)---(\r\n?|\n)$',
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verticalSeparator: '^(\r\n?|\n)----(\r\n?|\n)$'
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};
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//public
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var response = {
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errorForbidden: function (res) {
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responseError(res, "403", "Forbidden", "oh no.");
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},
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errorNotFound: function (res) {
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responseError(res, "404", "Not Found", "oops.");
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},
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errorInternalError: function (res) {
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responseError(res, "500", "Internal Error", "wtf.");
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},
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errorServiceUnavailable: function (res) {
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res.status(503).send("I'm busy right now, try again later.");
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},
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newNote: newNote,
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showNote: showNote,
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showPublishNote: showPublishNote,
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showPublishSlide: showPublishSlide,
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showIndex: showIndex,
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noteActions: noteActions,
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publishNoteActions: publishNoteActions,
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githubActions: githubActions,
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gitlabActions: gitlabActions
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};
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function responseError(res, code, detail, msg) {
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res.writeHead(code, {
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'Content-Type': 'text/html'
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});
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var template = config.errorpath;
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var options = {
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cache: !config.debug,
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filename: template
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};
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var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
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var content = compiled({
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url: config.serverurl,
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title: code + ' ' + detail + ' ' + msg,
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cache: !config.debug,
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filename: template,
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code: code,
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detail: detail,
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msg: msg,
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useCDN: config.usecdn
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});
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res.write(content);
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res.end();
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}
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function showIndex(req, res, next) {
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res.writeHead(200, {
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'Content-Type': 'text/html'
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});
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var template = config.indexpath;
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var options = {
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cache: !config.debug,
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filename: template
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};
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var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
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var content = compiled({
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url: config.serverurl,
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useCDN: config.usecdn,
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facebook: config.facebook,
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twitter: config.twitter,
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github: config.github,
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gitlab: config.gitlab,
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dropbox: config.dropbox,
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google: config.google
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});
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res.write(content);
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res.end();
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}
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function responseHackMD(res, note) {
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var body = LZString.decompressFromBase64(note.content);
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var meta = null;
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try {
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meta = models.Note.parseMeta(metaMarked(body).meta);
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} catch(err) {
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//na
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}
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var title = models.Note.decodeTitle(note.title);
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title = models.Note.generateWebTitle(meta.title || title);
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var template = config.hackmdpath;
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var options = {
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cache: !config.debug,
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filename: template
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};
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var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
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var html = compiled({
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url: config.serverurl,
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title: title,
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useCDN: config.usecdn,
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facebook: config.facebook,
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twitter: config.twitter,
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github: config.github,
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gitlab: config.gitlab,
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dropbox: config.dropbox,
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google: config.google
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});
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var buf = html;
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res.writeHead(200, {
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'Content-Type': 'text/html; charset=UTF-8',
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'Cache-Control': 'private',
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'Content-Length': buf.length,
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.end(buf);
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}
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function newNote(req, res, next) {
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var owner = null;
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if (req.isAuthenticated()) {
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owner = req.user.id;
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}
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models.Note.create({
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ownerId: owner
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}).then(function (note) {
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return res.redirect(config.serverurl + "/" + LZString.compressToBase64(note.id));
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}).catch(function (err) {
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logger.error(err);
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return response.errorInternalError(res);
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});
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}
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function checkViewPermission(req, note) {
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if (note.permission == 'private') {
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if (!req.isAuthenticated() || note.ownerId != req.user.id)
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return false;
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else
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return true;
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} else {
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return true;
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}
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}
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function findNote(req, res, callback, include) {
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var id = req.params.noteId || req.params.shortid;
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models.Note.parseNoteId(id, function (err, _id) {
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models.Note.findOne({
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where: {
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id: _id
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},
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include: include || null
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}).then(function (note) {
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if (!note) {
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return response.errorNotFound(res);
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}
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if (!checkViewPermission(req, note)) {
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return response.errorForbidden(res);
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} else {
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return callback(note);
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}
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}).catch(function (err) {
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logger.error(err);
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return response.errorInternalError(res);
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});
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});
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}
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function showNote(req, res, next) {
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findNote(req, res, function (note) {
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// force to use note id
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var noteId = req.params.noteId;
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var id = LZString.compressToBase64(note.id);
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if ((note.alias && noteId != note.alias) || (!note.alias && noteId != id))
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return res.redirect(config.serverurl + "/" + (note.alias || id));
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return responseHackMD(res, note);
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});
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}
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function showPublishNote(req, res, next) {
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var include = [{
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model: models.User,
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as: "owner"
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}, {
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model: models.User,
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as: "lastchangeuser"
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}];
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findNote(req, res, function (note) {
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// force to use short id
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var shortid = req.params.shortid;
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if ((note.alias && shortid != note.alias) || (!note.alias && shortid != note.shortid))
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return res.redirect(config.serverurl + "/s/" + (note.alias || note.shortid));
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note.increment('viewcount').then(function (note) {
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if (!note) {
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return response.errorNotFound(res);
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}
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var body = LZString.decompressFromBase64(note.content);
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var meta = null;
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try {
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meta = models.Note.parseMeta(metaMarked(body).meta);
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} catch(err) {
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//na
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}
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var createtime = note.createdAt;
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var updatetime = note.lastchangeAt;
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var text = S(body).escapeHTML().s;
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var title = models.Note.decodeTitle(note.title);
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title = models.Note.generateWebTitle(meta.title || title);
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var origin = config.serverurl;
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var data = {
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title: title,
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description: meta.description,
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viewcount: note.viewcount,
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createtime: createtime,
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updatetime: updatetime,
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url: origin,
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body: text,
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useCDN: config.usecdn,
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lastchangeuserprofile: note.lastchangeuser ? models.User.parseProfile(note.lastchangeuser.profile) : null,
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robots: meta.robots || false, //default allow robots
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GA: meta.GA
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};
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return renderPublish(data, res);
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}).catch(function (err) {
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logger.error(err);
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return response.errorInternalError(res);
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});
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}, include);
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}
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function renderPublish(data, res) {
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var template = config.prettypath;
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var options = {
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cache: !config.debug,
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filename: template
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};
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var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
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var html = compiled(data);
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var buf = html;
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res.writeHead(200, {
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'Content-Type': 'text/html; charset=UTF-8',
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'Cache-Control': 'private',
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'Content-Length': buf.length
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});
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res.end(buf);
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}
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function actionPublish(req, res, note) {
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res.redirect(config.serverurl + "/s/" + (note.alias || note.shortid));
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}
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function actionSlide(req, res, note) {
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res.redirect(config.serverurl + "/p/" + (note.alias || note.shortid));
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}
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function actionDownload(req, res, note) {
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var body = LZString.decompressFromBase64(note.content);
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var title = models.Note.decodeTitle(note.title);
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var filename = title;
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filename = encodeURIComponent(filename);
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res.writeHead(200, {
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'Access-Control-Allow-Origin': '*', //allow CORS as API
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'Access-Control-Allow-Headers': 'Range',
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'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
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'Content-Type': 'text/markdown; charset=UTF-8',
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'Cache-Control': 'private',
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'Content-disposition': 'attachment; filename=' + filename + '.md',
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'Content-Length': body.length,
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.end(body);
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}
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function actionPDF(req, res, note) {
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var body = LZString.decompressFromBase64(note.content);
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try {
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body = metaMarked(body).markdown;
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} catch(err) {
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//na
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}
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var title = models.Note.decodeTitle(note.title);
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if (!fs.existsSync(config.tmppath)) {
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fs.mkdirSync(config.tmppath);
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}
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var path = config.tmppath + '/' + Date.now() + '.pdf';
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markdownpdf().from.string(body).to(path, function () {
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var stream = fs.createReadStream(path);
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var filename = title;
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// Be careful of special characters
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filename = encodeURIComponent(filename);
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// Ideally this should strip them
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res.setHeader('Content-disposition', 'attachment; filename="' + filename + '.pdf"');
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res.setHeader('Cache-Control', 'private');
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res.setHeader('Content-Type', 'application/pdf; charset=UTF-8');
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res.setHeader('X-Robots-Tag', 'noindex, nofollow'); // prevent crawling
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stream.pipe(res);
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fs.unlink(path);
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});
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}
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function actionGist(req, res, note) {
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var data = {
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client_id: config.github.clientID,
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redirect_uri: config.serverurl + '/auth/github/callback/' + LZString.compressToBase64(note.id) + '/gist',
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scope: "gist",
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state: shortId.generate()
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};
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var query = querystring.stringify(data);
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res.redirect("https://github.com/login/oauth/authorize?" + query);
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}
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function actionRevision(req, res, note) {
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var actionId = req.params.actionId;
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if (actionId) {
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var time = moment(parseInt(actionId));
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if (time.isValid()) {
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models.Revision.getPatchedNoteRevisionByTime(note, time, function (err, content) {
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if (err) {
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logger.error(err);
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return response.errorInternalError(res);
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}
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if (!content) {
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return response.errorNotFound(res);
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}
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res.end(JSON.stringify(content));
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});
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} else {
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return response.errorNotFound(res);
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}
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} else {
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models.Revision.getNoteRevisions(note, function (err, data) {
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if (err) {
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logger.error(err);
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return response.errorInternalError(res);
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}
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var out = {
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revision: data
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};
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res.end(JSON.stringify(out));
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});
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}
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}
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function noteActions(req, res, next) {
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var noteId = req.params.noteId;
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findNote(req, res, function (note) {
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var action = req.params.action;
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switch (action) {
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case "publish":
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case "pretty": //pretty deprecated
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actionPublish(req, res, note);
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break;
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case "slide":
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actionSlide(req, res, note);
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break;
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case "download":
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actionDownload(req, res, note);
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break;
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case "pdf":
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actionPDF(req, res, note);
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break;
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case "gist":
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actionGist(req, res, note);
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break;
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case "revision":
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actionRevision(req, res, note);
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break;
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default:
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return res.redirect(config.serverurl + '/' + noteId);
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break;
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}
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});
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}
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function publishNoteActions(req, res, next) {
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findNote(req, res, function (note) {
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var action = req.params.action;
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switch (action) {
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case "edit":
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res.redirect(config.serverurl + '/' + (note.alias ? note.alias : LZString.compressToBase64(note.id)));
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break;
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default:
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res.redirect(config.serverurl + '/s/' + note.shortid);
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break;
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}
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});
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}
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function githubActions(req, res, next) {
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var noteId = req.params.noteId;
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findNote(req, res, function (note) {
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var action = req.params.action;
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switch (action) {
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case "gist":
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githubActionGist(req, res, note);
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break;
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default:
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res.redirect(config.serverurl + '/' + noteId);
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break;
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}
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});
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}
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function githubActionGist(req, res, note) {
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var code = req.query.code;
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var state = req.query.state;
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if (!code || !state) {
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return response.errorForbidden(res);
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} else {
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var data = {
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client_id: config.github.clientID,
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client_secret: config.github.clientSecret,
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code: code,
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state: state
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}
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var auth_url = 'https://github.com/login/oauth/access_token';
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request({
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url: auth_url,
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method: "POST",
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json: data
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}, function (error, httpResponse, body) {
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if (!error && httpResponse.statusCode == 200) {
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var access_token = body.access_token;
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if (access_token) {
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var content = LZString.decompressFromBase64(note.content);
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var title = models.Note.decodeTitle(note.title);
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var filename = title.replace('/', ' ') + '.md';
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var gist = {
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"files": {}
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};
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gist.files[filename] = {
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"content": content
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};
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var gist_url = "https://api.github.com/gists";
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request({
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url: gist_url,
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headers: {
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'User-Agent': 'HackMD',
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'Authorization': 'token ' + access_token
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},
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method: "POST",
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json: gist
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}, function (error, httpResponse, body) {
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if (!error && httpResponse.statusCode == 201) {
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res.setHeader('referer', '');
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res.redirect(body.html_url);
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} else {
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return response.errorForbidden(res);
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}
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});
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} else {
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return response.errorForbidden(res);
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}
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} else {
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return response.errorForbidden(res);
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}
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})
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}
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}
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function gitlabActions(req, res, next) {
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var noteId = req.params.noteId;
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findNote(req, res, function (note) {
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var action = req.params.action;
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switch (action) {
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case "projects":
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gitlabActionProjects(req, res, note);
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break;
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default:
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res.redirect(config.serverurl + '/' + noteId);
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break;
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}
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});
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}
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function gitlabActionProjects(req, res, note) {
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if (req.isAuthenticated()) {
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models.User.findOne({
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where: {
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id: req.user.id
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}
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}).then(function (user) {
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if (!user)
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return response.errorNotFound(res);
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var ret = { baseURL: config.gitlab.baseURL };
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ret.accesstoken = user.accessToken;
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ret.profileid = user.profileid;
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request(
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config.gitlab.baseURL + '/api/v3/projects?access_token=' + user.accessToken,
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function(error, httpResponse, body) {
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if (!error && httpResponse.statusCode == 200) {
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ret.projects = JSON.parse(body);
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return res.send(ret);
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} else {
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return res.send(ret);
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}
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}
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);
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}).catch(function (err) {
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logger.error('gitlab action projects failed: ' + err);
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return response.errorInternalError(res);
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});
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} else {
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return response.errorForbidden(res);
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}
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}
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function showPublishSlide(req, res, next) {
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findNote(req, res, function (note) {
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// force to use short id
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var shortid = req.params.shortid;
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if ((note.alias && shortid != note.alias) || (!note.alias && shortid != note.shortid))
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return res.redirect(config.serverurl + "/p/" + (note.alias || note.shortid));
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note.increment('viewcount').then(function (note) {
|
|
if (!note) {
|
|
return response.errorNotFound(res);
|
|
}
|
|
var body = LZString.decompressFromBase64(note.content);
|
|
var meta = null;
|
|
try {
|
|
var obj = metaMarked(body);
|
|
body = obj.markdown;
|
|
meta = models.Note.parseMeta(obj.meta);
|
|
} catch(err) {
|
|
//na
|
|
}
|
|
var text = S(body).escapeHTML().s;
|
|
var title = models.Note.decodeTitle(note.title);
|
|
title = models.Note.generateWebTitle(meta.title || title);
|
|
var slides = md.slidify(text, slideOptions);
|
|
var origin = config.serverurl;
|
|
var data = {
|
|
url: origin,
|
|
title: title,
|
|
description: meta.description,
|
|
slides: slides,
|
|
slideOptions: JSON.stringify(meta.slideOptions || {}),
|
|
GA: meta.GA,
|
|
useCDN: config.usecdn
|
|
};
|
|
return renderPublishSlide(data, res);
|
|
}).catch(function (err) {
|
|
logger.error(err);
|
|
return response.errorInternalError(res);
|
|
});
|
|
});
|
|
}
|
|
|
|
function renderPublishSlide(data, res) {
|
|
var template = config.slidepath;
|
|
var options = {
|
|
cache: !config.debug,
|
|
filename: template
|
|
};
|
|
var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
|
|
var html = compiled(data);
|
|
var buf = html;
|
|
res.writeHead(200, {
|
|
'Content-Type': 'text/html; charset=UTF-8',
|
|
'Cache-Control': 'private',
|
|
'Content-Length': buf.length
|
|
});
|
|
res.end(buf);
|
|
}
|
|
|
|
module.exports = response;
|