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#!/usr/bin/env node

const path = require("path")

const fs = require("fs")

const exec = require("child_process").exec

const https = require("https")

const getAppDataPath = require("appdata-path")

const MKCERT_VERSION = "v1.4.0"

const CERT_PATH = getAppDataPath("https-localhost")

// check for updates

/* istanbul ignore next: cannot test pkg */

function checkUpdates() {

try {

const options = {

host: "api.github.com",

path: "/repos/daquinoaldo/https-localhost/releases/latest",

method: "GET",

headers: { "User-Agent": "node.js" }

}

https.request(options, res => {

let body = ""

res.on("data", chunk => { body += chunk.toString("utf8") })

res.on("end", () => {

const currentVersion = JSON.parse(fs.readFileSync(

path.resolve(__dirname, "package.json"))).version

const latestVersion = JSON.parse(body).tag_name.replace("v", "")

if (currentVersion !== latestVersion)

console.warn("[https-localhost] New update available.")

})

}).end()

} catch (e) {

// Just catch everything, this is not a critic part and can fail.

// It is important to not affect the script behavior.

}

}

// get the executable name

function getExe() {

/* istanbul ignore next: tested on all platform on travis */

switch (process.platform) {

case "darwin":

return "mkcert-" + MKCERT_VERSION + "-darwin-amd64"

case "linux":

return "mkcert-" + MKCERT_VERSION + "-linux-amd64"

case "win32":

return "mkcert-" + MKCERT_VERSION + "-windows-amd64.exe"

default:

console.warn("Cannot generate the localhost certificate on your " +

"platform. Please, consider contacting the developer if you can help.")

process.exit(0)

}

}

// download a binary file

function download(url, path) {

console.log("Downloading the mkcert executable...")

const file = fs.createWriteStream(path)

return new Promise(resolve => {

function get(url, file) {

https.get(url, (response) => {

if (response.statusCode === 302) get(response.headers.location, file)

else response.pipe(file).on("finish", resolve)

})

}

get(url, file)

})

}

// execute the binary executable to generate the certificates

function mkcert(appDataPath, exe, domain) {

const logPath = path.join(appDataPath, "mkcert.log")

const errPath = path.join(appDataPath, "mkcert.err")

// escape spaces in appDataPath (Mac OS)

appDataPath = appDataPath.replace(" ", "\\ ")

const exePath = path.join(appDataPath, exe)

const crtPath = path.join(appDataPath, domain + ".crt")

const keyPath = path.join(appDataPath, domain + ".key")

const cmd = exePath + " -install -cert-file " + crtPath +

" -key-file " + keyPath + " " + domain

return new Promise((resolve, reject) => {

console.log("Running mkcert to generate certificates...")

exec(cmd, (err, stdout, stderr) => {

// log

const errFun = err => {

/* istanbul ignore if: cannot be tested */

if (err) console.error(err)

}

fs.writeFile(logPath, stdout, errFun)

fs.writeFile(errPath, stderr, errFun)

/* istanbul ignore if: cannot be tested */

if (err) reject(err)

resolve()

})

})

}

async function generate(appDataPath = CERT_PATH, customDomain = undefined) {

const domain = customDomain || "localhost"

console.info("Generating certificates...")

console.log("Certificates path: " + appDataPath +

". Never modify nor share this files.")

// mkdir if not exists

/* istanbul ignore else: not relevant */

if (!fs.existsSync(appDataPath))

fs.mkdirSync(appDataPath, { recursive: true })

// build the executable url and path

const url = "https://github.com/FiloSottile/mkcert/releases/download/" +

MKCERT_VERSION + "/"

const exe = getExe()

const exePath = path.join(appDataPath, exe)

// download the executable

await download(url + exe, exePath)

// make binary executable

fs.chmodSync(exePath, "0755")

// execute the binary

await mkcert(appDataPath, exe, domain)

console.log("Certificates generated, installed and trusted. Ready to go!")

}

async function getCerts(customDomain = undefined) {

const domain = customDomain || "localhost"

const certPath = process.env.CERT_PATH || CERT_PATH

// check for updates if running as executable

/* istanbul ignore if: cannot test pkg */

if (process.pkg) checkUpdates()

// check if a reinstall is forced or needed by a mkcert update

if (process.env.REINSTALL ||

!fs.existsSync(path.join(certPath, getExe())))

await generate(certPath, domain)

try {

return {

key: fs.readFileSync(path.join(certPath, domain + ".key")),

cert: fs.readFileSync(path.join(certPath, domain + ".crt"))

}

} catch (e) {

/* istanbul ignore else: should never occur */

if (certPath !== CERT_PATH) {

console.error("Cannot find localhost.key and localhost.crt in the" +

" specified path: " + certPath)

process.exit(1)

} else {

// Missing certificates (first run)

// generate the certificate

await generate(CERT_PATH, domain)

// recursive call

return getCerts(domain)

}

}

}

// delete a folder and the file inside it

function remove(appDataPath = CERT_PATH) {

if (fs.existsSync(appDataPath)) {

fs.readdirSync(appDataPath)

.forEach(file => fs.unlinkSync(path.join(appDataPath, file)))

fs.rmdirSync(appDataPath)

}

}

// run as script

/* istanbul ignore if: cannot be tested */

if (require.main === module)

// if run with -u or --uninstall

if (process.argv.length === 3 &&

(process.argv[2] === "-u" || process.argv[2] === "--uninstall")) {

remove()

console.info("Certificates removed.")

} else try { // install

generate()

} catch (err) { console.error("\nExec error: " + err) }

// export as module

module.exports = {

getCerts,

generate,

remove

}