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nodebb/src/middleware/middleware.js

336 lines
8.4 KiB
JavaScript

"use strict";
var app,
clientScripts,
middleware = {},
async = require('async'),
path = require('path'),
winston = require('winston'),
validator = require('validator'),
fs = require('fs'),
nconf = require('nconf'),
plugins = require('./../plugins'),
meta = require('./../meta'),
translator = require('./../../public/src/translator'),
user = require('./../user'),
db = require('./../database'),
controllers = {
api: require('./../controllers/api')
};
middleware.authenticate = function(req, res, next) {
if(!req.user) {
if (res.locals.isAPI) {
return res.json(403, 'not-allowed');
} else {
return res.redirect('403');
}
} else {
next();
}
};
middleware.updateLastOnlineTime = function(req, res, next) {
if(req.user) {
user.updateLastOnlineTime(req.user.uid);
}
db.sortedSetAdd('ip:recent', Date.now(), req.ip || 'Unknown');
next();
};
middleware.prepareAPI = function(req, res, next) {
res.locals.isAPI = true;
next();
};
middleware.checkGlobalPrivacySettings = function(req, res, next) {
var callerUID = req.user ? parseInt(req.user.uid, 10) : 0;
if (!callerUID && !!parseInt(meta.config.privateUserInfo, 10)) {
if (res.locals.isAPI) {
return res.json(403, 'not-allowed');
} else {
return res.redirect('403');
}
}
next();
};
middleware.checkAccountPermissions = function(req, res, next) {
var callerUID = req.user ? parseInt(req.user.uid, 10) : 0;
// this function requires userslug to be passed in. todo: /user/uploadpicture should pass in userslug I think
user.getUidByUserslug(req.params.userslug, function (err, uid) {
if (err) {
return next(err);
}
// not sure if this check really should belong here. also make sure we're not doing this check again in the actual method
if (!uid) {
if (res.locals.isAPI) {
return res.json(404);
} else {
return res.redirect('404');
}
}
if (parseInt(uid, 10) === callerUID) {
return next();
}
user.isAdministrator(callerUID, function(err, isAdmin) {
if(err) {
return next(err);
}
if(isAdmin) {
next();
}
if (res.locals.isAPI) {
return res.json(403, 'not-allowed');
} else {
return res.redirect('403');
}
});
});
};
middleware.buildHeader = function(req, res, next) {
async.parallel([
function(next) {
res.locals.renderHeader = true;
next();
},
function(next) {
controllers.api.getConfig(req, res, function(err, config) {
res.locals.config = config;
next();
});
},
function(next) {
// this is slower than the original implementation because the rendered template is not cached
// but I didn't bother to fix this because we will deprecate [filter:footer.build] in favour of the widgets system by 0.4x
plugins.fireHook('filter:footer.build', '', function(err, appendHTML) {
app.render('footer', {footerHTML: appendHTML}, function(err, template) {
translator.translate(template, function(parsedTemplate) {
res.locals.footer = template;
next(err);
});
});
});
}
], function(err) {
next();
});
};
/**
* TODO: switch signature to req, res, callback
* `options` object requires: req, res
* accepts: metaTags, linkTags
*/
middleware.renderHeader = function (options, callback) {
var custom_header = {
'navigation': []
};
plugins.fireHook('filter:header.build', custom_header, function(err, custom_header) {
var defaultMetaTags = [{
name: 'viewport',
content: 'width=device-width, initial-scale=1.0, user-scalable=no'
}, {
name: 'content-type',
content: 'text/html; charset=UTF-8'
}, {
name: 'apple-mobile-web-app-capable',
content: 'yes'
}, {
property: 'og:site_name',
content: meta.config.title || 'NodeBB'
}, {
property: 'keywords',
content: meta.config.keywords || ''
}],
defaultLinkTags = [{
rel: 'apple-touch-icon',
href: '/apple-touch-icon'
}],
templateValues = {
bootswatchCSS: meta.config['theme:src'],
pluginCSS: plugins.cssFiles.map(function(file) { return { path: nconf.get('relative_path') + file.replace(/\\/g, '/') }; }),
title: meta.config.title || '',
description: meta.config.description || '',
'brand:logo': meta.config['brand:logo'] || '',
'brand:logo:display': meta.config['brand:logo']?'':'hide',
csrf: options.res.locals.csrf_token,
relative_path: nconf.get('relative_path'),
clientScripts: clientScripts,
navigation: custom_header.navigation,
'cache-buster': meta.config['cache-buster'] ? 'v=' + meta.config['cache-buster'] : '',
allowRegistration: meta.config.allowRegistration === undefined || parseInt(meta.config.allowRegistration, 10) === 1,
searchEnabled: plugins.hasListeners('filter:search.query') ? true : false
},
escapeList = {
'&': '&',
'<': '&lt;',
'>': '&gt;',
"'": '&apos;',
'"': '&quot;'
};
for (var key in options.res.locals.config) {
if (options.res.locals.config.hasOwnProperty(key)) {
templateValues[key] = options.res.locals.config[key];
}
}
var uid = '0';
templateValues.metaTags = defaultMetaTags.concat(options.res.locals.metaTags || []).map(function(tag) {
if(!tag || typeof tag.content !== 'string') {
winston.warn('Invalid meta tag. ', tag);
return tag;
}
tag.content = tag.content.replace(/[&<>'"]/g, function(tag) {
return escapeList[tag] || tag;
});
return tag;
});
templateValues.linkTags = defaultLinkTags.concat(options.linkTags || []);
templateValues.linkTags.push({
rel: "icon",
type: "image/x-icon",
href: nconf.get('relative_path') + '/favicon.ico'
});
if(options.req.user && options.req.user.uid) {
uid = options.req.user.uid;
}
templateValues.useCustomCSS = false;
if (meta.config.useCustomCSS === '1') {
templateValues.useCustomCSS = true;
templateValues.customCSS = meta.config.customCSS;
}
async.parallel([
function(next) {
translator.get('pages:' + path.basename(options.req.url), function(translated) {
var metaTitle = templateValues.metaTags.filter(function(tag) {
return tag.name === 'title';
});
if (translated) {
templateValues.browserTitle = translated;
} else if (metaTitle.length > 0 && metaTitle[0].content) {
templateValues.browserTitle = metaTitle[0].content;
} else {
templateValues.browserTitle = meta.config.browserTitle || 'NodeBB';
}
next();
});
},
function(next) {
user.isAdministrator(uid, function(err, isAdmin) {
templateValues.isAdmin = isAdmin || false;
next();
});
}
], function() {
app.render('header', templateValues, function(err, template) {
callback(null, template);
});
});
});
};
middleware.processRender = function(req, res, next) {
// res.render post-processing, modified from here: https://gist.github.com/mrlannigan/5051687
var render = res.render;
res.render = function(template, options, fn) {
var self = this,
options = options || {},
req = this.req,
app = req.app,
defaultFn = function(err, str){
if (err) {
return req.next(err);
}
self.send(str);
};
if ('function' === typeof options) {
fn = options, options = {};
}
if ('function' !== typeof fn) {
fn = defaultFn;
}
render.call(self, template, options, function(err, str) {
if (res.locals.footer) {
str = str + res.locals.footer;
} else if (res.locals.adminFooter) {
str = str + res.locals.adminFooter;
}
if (res.locals.renderHeader) {
middleware.renderHeader({
req: req,
res: res
}, function(err, template) {
str = template + str;
translator.translate(str, function(translated) {
fn(err, translated);
});
});
} else if (res.locals.adminHeader) {
str = res.locals.adminHeader + str;
fn(err, str);
} else {
fn(err, str);
}
});
};
next();
};
middleware.routeTouchIcon = function(req, res) {
if (meta.config['brand:logo'] && validator.isURL(meta.config['brand:logo'])) {
return res.redirect(meta.config['brand:logo']);
} else {
return res.sendfile(path.join(__dirname, '../../public', meta.config['brand:logo'] || nconf.get('relative_path') + '/logo.png'), {
maxAge: app.enabled('cache') ? 5184000000 : 0
});
}
};
module.exports = function(webserver) {
app = webserver;
middleware.admin = require('./admin')(webserver);
plugins.ready(function() {
// Minify client-side libraries
meta.js.get(function (err, scripts) {
clientScripts = scripts.map(function (script) {
script = {
script: script
};
return script;
});
});
});
return middleware;
};