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server.js
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server.js
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require('dotenv').config()
const express = require('express')
const path = require('path')
const fs = require('fs')
const formidable = require('formidable')
const sgMail = require('@sendgrid/mail')
sgMail.setApiKey(process.env.SENDGRID_API_KEY)
const app = express()
const fetch = require('node-fetch')
const xssFilters = require('xss-filters')
const PORT = process.env.SERVER_PORT || 9000
// const CLIENT_PORT = process.env.PORT || 3000
const PROTOCOL = process.env.PROTOCOL || 'http'
const HOSTNAME = process.env.HOST || 'localhost'
const UPLOAD_DIR = path.join(__dirname, 'uploads/')
const CORS =
process.env.NODE_ENV === 'production' ? `${PROTOCOL}://${HOSTNAME}` : `*`
const ENABLE_SEND_EMAILS =
process.env.NODE_ENV === 'production' ||
process.env.ENABLE_SEND_EMAILS === 'true'
const ENABLE_WRIKE =
process.env.NODE_ENV === 'production' || process.env.ENABLE_WRIKE === 'true'
if (ENABLE_SEND_EMAILS) {
console.info('Sending emails is enabled')
} else {
console.info('Sending emails is disabled')
}
if (ENABLE_WRIKE) {
console.info('Wrike integration is enabled')
} else {
console.info('Wrike integration is disabled')
}
// This converts {a:1, b:2} into 'a=1&b=2'
const queryParams = obj =>
Object.keys(obj)
.map(key => [key, obj[key]]) // There is no Object.entries() in node 6
.map(
([key, val]) => encodeURIComponent(key) + '=' + encodeURIComponent(val)
)
.join('&')
const wrikeMkFolder = (name, content) =>
fetch(process.env.WRIKE_URL, {
body: queryParams({
title: name,
description: content,
shareds: process.env.WRIKE_SHARE_ID,
project: process.env.WRIKE_OWNER_ID
}),
method: 'post',
headers: {
Authorization: `bearer ${process.env.WRIKE_TOKEN}`,
'Content-Type': 'application/x-www-form-urlencoded'
}
}).then(res => res.json())
const wrikeAddAttachment = (id, file, name, type) =>
fetch(`https://www.wrike.com/api/v3/folders/${id}/attachments`, {
body: file,
method: 'post',
headers: {
Authorization: `bearer ${process.env.WRIKE_TOKEN}`,
'x-requested-with': 'XMLHttpRequest',
'x-file-name': name,
'content-type': type,
'cache-control': 'no-cache'
}
}).then(res => res.json())
if (!fs.existsSync(UPLOAD_DIR)) {
console.warn('Creating uploads folder...')
fs.mkdirSync(UPLOAD_DIR)
}
console.info(`Uploads will be saved in ${UPLOAD_DIR}`)
app.use(express.static(path.join(__dirname, 'build')))
app.get('/*', function (req, res) {
res.sendFile(path.join(__dirname, 'build', 'index.html'))
})
// Handle Story form submissions
app.post('/story-form', function (req, res) {
const form = new formidable.IncomingForm()
// In any case send the cors headers (even on error)
res.header('Access-Control-Allow-Origin', CORS)
res.header(
'Access-Control-Allow-Headers',
'Origin, X-Requested-With, Content-Type, Accept'
)
form.parse(req)
const fields = {}
let fieldsString = ''
form.on('field', (name, value) => {
fields[name] = value
fieldsString =
fieldsString +
`<span><span style='text-transform: capitalize;'>${xssFilters.inHTMLData(
name
)}</span>: ${xssFilters.inHTMLData(value)}</span><br /><br />`
})
// Handle a possible error while parsing the request
// We need a variable in this scope to hold whether there was an error
// because we need to know that in a different callback
let error = false
form.on('error', err => {
error = true
console.log('Error while parsing request to /story-form: ' + err)
res
.status(400) // Bad request
.json({ success: false, status: 'Error parsing the request' })
})
form.on('end', () => {
// The end event is fired even if an error occurs, so we
// need to prevent from sending a second response, otherwise the
// server crashes
if (error) return
console.log('Received fields:\n' + JSON.stringify(fields, null, 2))
console.log(fieldsString)
const emailBody = `Thank you for your submission!<br /><br />${fieldsString}`
// Here is a good place to send the emails since we have the fields
// We don't want to actually send emails during testing since it
// would send a test email on every single commit
if (ENABLE_SEND_EMAILS) {
const msg = {
to: fields.email,
bcc:
process.env.NODE_ENV === 'production'
? [
'jweigel@franciscan.edu',
process.env.STORY_EMAIL1,
process.env.STORY_EMAIL2
]
: 'jweigel@franciscan.edu',
from: 'resourcecenter@franciscan.edu',
replyTo: 'jweigel@franciscan.edu',
subject: 'Suggest a Story Form Submission',
text: 'Story suggestion submitted successfully!',
html: emailBody
}
sgMail
.send(msg)
.then(() => console.log('Mail sent successfully'))
.catch(error => console.error(error.toString()))
}
// Send the success response
res
.status(200)
.json({ success: true, status: 'Form successfully submitted' })
})
})
// Handle Service Request Form Submissions
app.post('/uploads', function (req, res) {
const form = new formidable.IncomingForm()
form.maxFileSize = 2
// In any case send the cors headers (even on error)
res.header('Access-Control-Allow-Origin', CORS)
res.header(
'Access-Control-Allow-Headers',
'Origin, X-Requested-With, Content-Type, Accept'
)
form.parse(req)
// The events we subscribe to in the form occur in the following order
// field - multiple times
// fileBegin then file - once per file
// error - only if there was a parsing error
// end - when all other events have been handled and the files have
// finished being written to the disk, this event happens even
// if there was an error
form.on('fileBegin', function (name, file) {
// https://stackoverflow.com/a/30550190/4718107
const fileType = file.type.split('/').pop()
const fileExtension = file.name.split('.').pop()
const hasDots = file.name.match('.').length > 1
const hasSlash = file.name.includes('/')
const fileTypes = /(vnd.rar|pdf|msword|vnd.openxmlformats-officedocument.wordprocessingml.document|vnd.openxmlformats-officedocument.spreadsheetml.sheet|vnd.ms-excel|vnd.ms-powerpoint|vnd.openxmlformats-officedocument.presentationml.presentation|mp4|mpeg|plain|zip|quicktime|avi|wav|jpeg|octet-stream|png)$/i
const fileExtensions = /(zip|pdf|docx?|xlsx?|pptx?|mp3|txt|plain|rar|wma|mov|avi|wmv|mp4|flv|wav|jpe?g|psd|png)$/i
// https://docs.nodejitsu.com/articles/file-system/security/introduction/
const posionNullBytesCheck = file.name.indexOf('\0') !== -1
console.log(fileExtensions.test(fileExtension))
if (
!posionNullBytesCheck &&
fileTypes.test(fileType) &&
fileExtensions.test(fileExtension) &&
!hasDots &&
!hasSlash &&
form.bytesExpected < 10 * 1024 * 1024 &&
form.bytesReceived < 10 * 1024 * 1024
) {
file.path = path.join(UPLOAD_DIR, file.name)
} else {
console.log('incorrect file type: ' + fileType)
}
})
form.on('file', function (name, file) {
console.log('Uploaded ' + file.name)
})
const files = []
form.on('file', function (name, file) {
files.push(file)
})
const fields = {}
let fieldsString = ''
form.on('field', (name, value) => {
fields[name] = value
fieldsString =
value !== 'false' && name !== 'fileValid' && value !== 'null'
? fieldsString +
`<span><span style='text-transform: capitalize;'>${xssFilters.inHTMLData(
name
)}</span>: ${xssFilters.inHTMLData(value)}</span><br /><br />`
: fieldsString
})
// Handle a possible error while parsing the request
// We need a variable in this scope to hold whether there was an error
// because we need to know that in a different callback
let error = false
form.on('error', err => {
error = true
console.log('Error while parsing request to /uploads: ' + err)
res
.status(400) // Bad request
.json({ success: false, status: 'Error parsing the request' })
})
form.on('end', () => {
// The end event is fired even if an error occurs, so we
// need to prevent from sending a second response, otherwise the
// server crashes
if (error) return
console.log('Received fields:\n' + JSON.stringify(fields, null, 2))
const emailBody = `Thank you for your request!<br /> <br />${fieldsString}`
// TODO: Validate fields
// Here is a good place to send the emails since we have the fields
// We don't want to actually send emails during testing since it
// would send a test email on every single commit
if (ENABLE_SEND_EMAILS) {
const msg = {
to: fields.email,
bcc:
process.env.NODE_ENV === 'production'
? ['jweigel@franciscan.edu', process.env.SRF_EMAIL]
: 'jweigel@franciscan.edu',
from: 'resourcecenter@franciscan.edu',
replyTo: process.env.SRF_REPLY,
subject: 'New Service Request Form Submission',
text: 'Request submitted successfully!',
html: emailBody
}
sgMail
.send(msg)
.then(() => console.log('Mail sent successfully'))
.catch(error => console.error(error.toString()))
}
// Create project and attach files in wrike
if (ENABLE_WRIKE) {
wrikeMkFolder(fields['email'], fieldsString)
.then(status => {
const folderId = status.data[0].id
for (const file of files) {
// Formidable files are just metadata, not the actual file
// Use the file name to create a ReadStream and pass it to
// node-fetch which can handle ReadStreams
// To pass a ReadStream is something like piping the file
// instead of reading the whole file and passing it
const readStream = fs.createReadStream(file.path)
wrikeAddAttachment(
folderId,
readStream,
file.name,
file.type
).catch(err => {
console.log(
'Error while reading file for upload to Wrike: ' + err
)
console.log('Filename: ' + file.path)
})
}
})
.catch(err => {
console.log('Error while creating a project in Wrike: ' + err)
})
}
// Send the success response
res
.status(200)
.json({ success: true, status: 'Form successfully submitted' })
})
})
app.listen(PORT, _ =>
console.info(
`Server listening on PORT ${PORT}... Mode ${process.env.NODE_ENV}`
)
)