608 lines
21 KiB
JavaScript
Executable file
608 lines
21 KiB
JavaScript
Executable file
//response
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//external modules
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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 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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//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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errorBadRequest: function (res) {
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responseError(res, "400", "Bad Request", "something not right.");
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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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publishSlideActions: publishSlideActions,
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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.status(code).render(config.errorpath, {
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url: config.serverurl,
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title: code + ' ' + detail + ' ' + msg,
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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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}
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function showIndex(req, res, next) {
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res.render(config.indexpath, {
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url: config.serverurl,
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useCDN: config.usecdn,
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allowAnonymous: config.allowanonymous,
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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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ldap: config.ldap,
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email: config.email,
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allowemailregister: config.allowemailregister,
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signin: req.isAuthenticated(),
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infoMessage: req.flash('info'),
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errorMessage: req.flash('error')
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});
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}
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function responseHackMD(res, note) {
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var body = note.content;
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var extracted = models.Note.extractMeta(body);
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var meta = models.Note.parseMeta(extracted.meta);
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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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res.set({
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'Cache-Control': 'private', // only cache by client
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.render(config.hackmdpath, {
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url: config.serverurl,
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title: title,
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useCDN: config.usecdn,
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allowAnonymous: config.allowanonymous,
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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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ldap: config.ldap,
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email: config.email
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});
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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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} else if (!config.allowanonymous) {
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return response.errorForbidden(res);
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}
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models.Note.create({
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ownerId: owner,
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alias: req.alias ? req.alias : null
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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 if (note.permission == 'limited' || note.permission == 'protected') {
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if( !req.isAuthenticated() ) {
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return false;
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}
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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 noteId = req.params.noteId;
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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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if (config.allowfreeurl && noteId) {
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req.alias = noteId;
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return newNote(req, res);
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} else {
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return response.errorNotFound(res);
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}
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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 = note.content;
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var extracted = models.Note.extractMeta(body);
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markdown = extracted.markdown;
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meta = models.Note.parseMeta(extracted.meta);
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var createtime = note.createdAt;
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var updatetime = note.lastchangeAt;
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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 || (markdown ? models.Note.generateDescription(markdown) : null),
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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: body,
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useCDN: config.usecdn,
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owner: note.owner ? note.owner.id : null,
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ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
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lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
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lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
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robots: meta.robots || false, //default allow robots
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GA: meta.GA,
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disqus: meta.disqus
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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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res.set({
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'Cache-Control': 'private' // only cache by client
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});
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res.render(config.prettypath, data);
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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 = 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.set({
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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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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.send(body);
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}
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function actionInfo(req, res, note) {
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var body = note.content;
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var extracted = models.Note.extractMeta(body);
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var markdown = extracted.markdown;
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var meta = models.Note.parseMeta(extracted.meta);
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var createtime = note.createdAt;
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var updatetime = note.lastchangeAt;
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var title = models.Note.decodeTitle(note.title);
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var data = {
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title: meta.title || title,
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description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
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viewcount: note.viewcount,
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createtime: createtime,
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updatetime: updatetime
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};
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res.set({
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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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'Cache-Control': 'private', // only cache by client
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.send(data);
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}
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function actionPDF(req, res, note) {
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var body = note.content;
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var extracted = models.Note.extractMeta(body);
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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(extracted.markdown).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.set({
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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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'Cache-Control': 'private', // only cache by client
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.send(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.set({
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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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'Cache-Control': 'private', // only cache by client
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'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
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});
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res.send(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 "info":
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actionInfo(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 publishSlideActions(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 + '/p/' + 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 = 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;
|
|
ret.profileid = user.profileid;
|
|
request(
|
|
config.gitlab.baseURL + '/api/v3/projects?access_token=' + user.accessToken,
|
|
function(error, httpResponse, body) {
|
|
if (!error && httpResponse.statusCode == 200) {
|
|
ret.projects = JSON.parse(body);
|
|
return res.send(ret);
|
|
} else {
|
|
return res.send(ret);
|
|
}
|
|
}
|
|
);
|
|
}).catch(function (err) {
|
|
logger.error('gitlab action projects failed: ' + err);
|
|
return response.errorInternalError(res);
|
|
});
|
|
} else {
|
|
return response.errorForbidden(res);
|
|
}
|
|
}
|
|
|
|
function showPublishSlide(req, res, next) {
|
|
var include = [{
|
|
model: models.User,
|
|
as: "owner"
|
|
}, {
|
|
model: models.User,
|
|
as: "lastchangeuser"
|
|
}];
|
|
findNote(req, res, function (note) {
|
|
// force to use short id
|
|
var shortid = req.params.shortid;
|
|
if ((note.alias && shortid != note.alias) || (!note.alias && shortid != note.shortid))
|
|
return res.redirect(config.serverurl + "/p/" + (note.alias || note.shortid));
|
|
note.increment('viewcount').then(function (note) {
|
|
if (!note) {
|
|
return response.errorNotFound(res);
|
|
}
|
|
var body = note.content;
|
|
var extracted = models.Note.extractMeta(body);
|
|
markdown = extracted.markdown;
|
|
meta = models.Note.parseMeta(extracted.meta);
|
|
var createtime = note.createdAt;
|
|
var updatetime = note.lastchangeAt;
|
|
var title = models.Note.decodeTitle(note.title);
|
|
title = models.Note.generateWebTitle(meta.title || title);
|
|
var origin = config.serverurl;
|
|
var data = {
|
|
title: title,
|
|
description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
|
|
viewcount: note.viewcount,
|
|
createtime: createtime,
|
|
updatetime: updatetime,
|
|
url: origin,
|
|
body: markdown,
|
|
meta: JSON.stringify(extracted.meta),
|
|
useCDN: config.usecdn,
|
|
owner: note.owner ? note.owner.id : null,
|
|
ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
|
|
lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
|
|
lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
|
|
robots: meta.robots || false, //default allow robots
|
|
GA: meta.GA,
|
|
disqus: meta.disqus
|
|
};
|
|
return renderPublishSlide(data, res);
|
|
}).catch(function (err) {
|
|
logger.error(err);
|
|
return response.errorInternalError(res);
|
|
});
|
|
}, include);
|
|
}
|
|
|
|
function renderPublishSlide(data, res) {
|
|
res.set({
|
|
'Cache-Control': 'private' // only cache by client
|
|
});
|
|
res.render(config.slidepath, data);
|
|
}
|
|
|
|
module.exports = response;
|