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2 years ago
'use strict'
const fs = require('graceful-fs')
const os = require('os')
const tar = require('tar')
const path = require('path')
const util = require('util')
const stream = require('stream')
const crypto = require('crypto')
const log = require('npmlog')
const semver = require('semver')
const fetch = require('make-fetch-happen')
const processRelease = require('./process-release')
const win = process.platform === 'win32'
const streamPipeline = util.promisify(stream.pipeline)
/**
* @param {typeof import('graceful-fs')} fs
*/
async function install (fs, gyp, argv) {
const release = processRelease(argv, gyp, process.version, process.release)
// Determine which node dev files version we are installing
log.verbose('install', 'input version string %j', release.version)
if (!release.semver) {
// could not parse the version string with semver
throw new Error('Invalid version number: ' + release.version)
}
if (semver.lt(release.version, '0.8.0')) {
throw new Error('Minimum target version is `0.8.0` or greater. Got: ' + release.version)
}
// 0.x.y-pre versions are not published yet and cannot be installed. Bail.
if (release.semver.prerelease[0] === 'pre') {
log.verbose('detected "pre" node version', release.version)
if (!gyp.opts.nodedir) {
throw new Error('"pre" versions of node cannot be installed, use the --nodedir flag instead')
}
log.verbose('--nodedir flag was passed; skipping install', gyp.opts.nodedir)
return
}
// flatten version into String
log.verbose('install', 'installing version: %s', release.versionDir)
// the directory where the dev files will be installed
const devDir = path.resolve(gyp.devDir, release.versionDir)
// If '--ensure' was passed, then don't *always* install the version;
// check if it is already installed, and only install when needed
if (gyp.opts.ensure) {
log.verbose('install', '--ensure was passed, so won\'t reinstall if already installed')
try {
await fs.promises.stat(devDir)
} catch (err) {
if (err.code === 'ENOENT') {
log.verbose('install', 'version not already installed, continuing with install', release.version)
try {
return await go()
} catch (err) {
return rollback(err)
}
} else if (err.code === 'EACCES') {
return eaccesFallback(err)
}
throw err
}
log.verbose('install', 'version is already installed, need to check "installVersion"')
const installVersionFile = path.resolve(devDir, 'installVersion')
let installVersion = 0
try {
const ver = await fs.promises.readFile(installVersionFile, 'ascii')
installVersion = parseInt(ver, 10) || 0
} catch (err) {
if (err.code !== 'ENOENT') {
throw err
}
}
log.verbose('got "installVersion"', installVersion)
log.verbose('needs "installVersion"', gyp.package.installVersion)
if (installVersion < gyp.package.installVersion) {
log.verbose('install', 'version is no good; reinstalling')
try {
return await go()
} catch (err) {
return rollback(err)
}
}
log.verbose('install', 'version is good')
} else {
try {
return await go()
} catch (err) {
return rollback(err)
}
}
async function go () {
log.verbose('ensuring nodedir is created', devDir)
// first create the dir for the node dev files
try {
const created = await fs.promises.mkdir(devDir, { recursive: true })
if (created) {
log.verbose('created nodedir', created)
}
} catch (err) {
if (err.code === 'EACCES') {
return eaccesFallback(err)
}
throw err
}
// now download the node tarball
const tarPath = gyp.opts.tarball
let extractCount = 0
const contentShasums = {}
const expectShasums = {}
// checks if a file to be extracted from the tarball is valid.
// only .h header files and the gyp files get extracted
function isValid (path) {
const isValid = valid(path)
if (isValid) {
log.verbose('extracted file from tarball', path)
extractCount++
} else {
// invalid
log.silly('ignoring from tarball', path)
}
return isValid
}
// download the tarball and extract!
if (tarPath) {
await tar.extract({
file: tarPath,
strip: 1,
filter: isValid,
cwd: devDir
})
} else {
try {
const res = await download(gyp, release.tarballUrl)
if (res.status !== 200) {
throw new Error(`${res.status} response downloading ${release.tarballUrl}`)
}
await streamPipeline(
res.body,
// content checksum
new ShaSum((_, checksum) => {
const filename = path.basename(release.tarballUrl).trim()
contentShasums[filename] = checksum
log.verbose('content checksum', filename, checksum)
}),
tar.extract({
strip: 1,
cwd: devDir,
filter: isValid
})
)
} catch (err) {
// something went wrong downloading the tarball?
if (err.code === 'ENOTFOUND') {
throw new Error('This is most likely not a problem with node-gyp or the package itself and\n' +
'is related to network connectivity. In most cases you are behind a proxy or have bad \n' +
'network settings.')
}
throw err
}
}
// invoked after the tarball has finished being extracted
if (extractCount === 0) {
throw new Error('There was a fatal problem while downloading/extracting the tarball')
}
log.verbose('tarball', 'done parsing tarball')
const installVersionPath = path.resolve(devDir, 'installVersion')
await Promise.all([
// need to download node.lib
...(win ? downloadNodeLib() : []),
// write the "installVersion" file
fs.promises.writeFile(installVersionPath, gyp.package.installVersion + '\n'),
// Only download SHASUMS.txt if we downloaded something in need of SHA verification
...(!tarPath || win ? [downloadShasums()] : [])
])
log.verbose('download contents checksum', JSON.stringify(contentShasums))
// check content shasums
for (const k in contentShasums) {
log.verbose('validating download checksum for ' + k, '(%s == %s)', contentShasums[k], expectShasums[k])
if (contentShasums[k] !== expectShasums[k]) {
throw new Error(k + ' local checksum ' + contentShasums[k] + ' not match remote ' + expectShasums[k])
}
}
async function downloadShasums () {
log.verbose('check download content checksum, need to download `SHASUMS256.txt`...')
log.verbose('checksum url', release.shasumsUrl)
const res = await download(gyp, release.shasumsUrl)
if (res.status !== 200) {
throw new Error(`${res.status} status code downloading checksum`)
}
for (const line of (await res.text()).trim().split('\n')) {
const items = line.trim().split(/\s+/)
if (items.length !== 2) {
return
}
// 0035d18e2dcf9aad669b1c7c07319e17abfe3762 ./node-v0.11.4.tar.gz
const name = items[1].replace(/^\.\//, '')
expectShasums[name] = items[0]
}
log.verbose('checksum data', JSON.stringify(expectShasums))
}
function downloadNodeLib () {
log.verbose('on Windows; need to download `' + release.name + '.lib`...')
const archs = ['ia32', 'x64', 'arm64']
return archs.map(async (arch) => {
const dir = path.resolve(devDir, arch)
const targetLibPath = path.resolve(dir, release.name + '.lib')
const { libUrl, libPath } = release[arch]
const name = `${arch} ${release.name}.lib`
log.verbose(name, 'dir', dir)
log.verbose(name, 'url', libUrl)
await fs.promises.mkdir(dir, { recursive: true })
log.verbose('streaming', name, 'to:', targetLibPath)
const res = await download(gyp, libUrl)
if (res.status === 403 || res.status === 404) {
if (arch === 'arm64') {
// Arm64 is a newer platform on Windows and not all node distributions provide it.
log.verbose(`${name} was not found in ${libUrl}`)
} else {
log.warn(`${name} was not found in ${libUrl}`)
}
return
} else if (res.status !== 200) {
throw new Error(`${res.status} status code downloading ${name}`)
}
return streamPipeline(
res.body,
new ShaSum((_, checksum) => {
contentShasums[libPath] = checksum
log.verbose('content checksum', libPath, checksum)
}),
fs.createWriteStream(targetLibPath)
)
})
} // downloadNodeLib()
} // go()
/**
* Checks if a given filename is "valid" for this installation.
*/
function valid (file) {
// header files
const extname = path.extname(file)
return extname === '.h' || extname === '.gypi'
}
async function rollback (err) {
log.warn('install', 'got an error, rolling back install')
// roll-back the install if anything went wrong
await util.promisify(gyp.commands.remove)([release.versionDir])
throw err
}
/**
* The EACCES fallback is a workaround for npm's `sudo` behavior, where
* it drops the permissions before invoking any child processes (like
* node-gyp). So what happens is the "nobody" user doesn't have
* permission to create the dev dir. As a fallback, make the tmpdir() be
* the dev dir for this installation. This is not ideal, but at least
* the compilation will succeed...
*/
async function eaccesFallback (err) {
const noretry = '--node_gyp_internal_noretry'
if (argv.indexOf(noretry) !== -1) {
throw err
}
const tmpdir = os.tmpdir()
gyp.devDir = path.resolve(tmpdir, '.node-gyp')
let userString = ''
try {
// os.userInfo can fail on some systems, it's not critical here
userString = ` ("${os.userInfo().username}")`
} catch (e) {}
log.warn('EACCES', 'current user%s does not have permission to access the dev dir "%s"', userString, devDir)
log.warn('EACCES', 'attempting to reinstall using temporary dev dir "%s"', gyp.devDir)
if (process.cwd() === tmpdir) {
log.verbose('tmpdir == cwd', 'automatically will remove dev files after to save disk space')
gyp.todo.push({ name: 'remove', args: argv })
}
return util.promisify(gyp.commands.install)([noretry].concat(argv))
}
}
class ShaSum extends stream.Transform {
constructor (callback) {
super()
this._callback = callback
this._digester = crypto.createHash('sha256')
}
_transform (chunk, _, callback) {
this._digester.update(chunk)
callback(null, chunk)
}
_flush (callback) {
this._callback(null, this._digester.digest('hex'))
callback()
}
}
async function download (gyp, url) {
log.http('GET', url)
const requestOpts = {
headers: {
'User-Agent': `node-gyp v${gyp.version} (node ${process.version})`,
Connection: 'keep-alive'
},
proxy: gyp.opts.proxy,
noProxy: gyp.opts.noproxy
}
const cafile = gyp.opts.cafile
if (cafile) {
requestOpts.ca = await readCAFile(cafile)
}
const res = await fetch(url, requestOpts)
log.http(res.status, res.url)
return res
}
async function readCAFile (filename) {
// The CA file can contain multiple certificates so split on certificate
// boundaries. [\S\s]*? is used to match everything including newlines.
const ca = await fs.promises.readFile(filename, 'utf8')
const re = /(-----BEGIN CERTIFICATE-----[\S\s]*?-----END CERTIFICATE-----)/g
return ca.match(re)
}
module.exports = function (gyp, argv, callback) {
install(fs, gyp, argv).then(callback.bind(undefined, null), callback)
}
module.exports.test = {
download,
install,
readCAFile
}
module.exports.usage = 'Install node development files for the specified node version.'