416 lines
14 KiB
JavaScript
416 lines
14 KiB
JavaScript
'use strict'
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const { createWriteStream, promises: fs } = require('graceful-fs')
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const os = require('os')
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const { backOff } = require('exponential-backoff')
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const tar = require('tar')
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const path = require('path')
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const { Transform, promises: { pipeline } } = require('stream')
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const crypto = require('crypto')
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const log = require('./log')
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const semver = require('semver')
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const { download } = require('./download')
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const processRelease = require('./process-release')
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const win = process.platform === 'win32'
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async function install (gyp, argv) {
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log.stdout()
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const release = processRelease(argv, gyp, process.version, process.release)
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// Detecting target_arch based on logic from create-cnfig-gyp.js. Used on Windows only.
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const arch = win ? (gyp.opts.target_arch || gyp.opts.arch || process.arch || 'ia32') : ''
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// Used to prevent downloading tarball if only new node.lib is required on Windows.
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let shouldDownloadTarball = true
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// Determine which node dev files version we are installing
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log.verbose('install', 'input version string %j', release.version)
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if (!release.semver) {
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// could not parse the version string with semver
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throw new Error('Invalid version number: ' + release.version)
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}
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if (semver.lt(release.version, '0.8.0')) {
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throw new Error('Minimum target version is `0.8.0` or greater. Got: ' + release.version)
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}
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// 0.x.y-pre versions are not published yet and cannot be installed. Bail.
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if (release.semver.prerelease[0] === 'pre') {
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log.verbose('detected "pre" node version', release.version)
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if (!gyp.opts.nodedir) {
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throw new Error('"pre" versions of node cannot be installed, use the --nodedir flag instead')
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}
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log.verbose('--nodedir flag was passed; skipping install', gyp.opts.nodedir)
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return
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}
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// flatten version into String
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log.verbose('install', 'installing version: %s', release.versionDir)
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// the directory where the dev files will be installed
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const devDir = path.resolve(gyp.devDir, release.versionDir)
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// If '--ensure' was passed, then don't *always* install the version;
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// check if it is already installed, and only install when needed
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if (gyp.opts.ensure) {
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log.verbose('install', '--ensure was passed, so won\'t reinstall if already installed')
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try {
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await fs.stat(devDir)
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} catch (err) {
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if (err.code === 'ENOENT') {
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log.verbose('install', 'version not already installed, continuing with install', release.version)
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try {
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return await go()
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} catch (err) {
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return rollback(err)
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}
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} else if (err.code === 'EACCES') {
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return eaccesFallback(err)
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}
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throw err
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}
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log.verbose('install', 'version is already installed, need to check "installVersion"')
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const installVersionFile = path.resolve(devDir, 'installVersion')
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let installVersion = 0
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try {
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const ver = await fs.readFile(installVersionFile, 'ascii')
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installVersion = parseInt(ver, 10) || 0
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} catch (err) {
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if (err.code !== 'ENOENT') {
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throw err
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}
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}
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log.verbose('got "installVersion"', installVersion)
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log.verbose('needs "installVersion"', gyp.package.installVersion)
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if (installVersion < gyp.package.installVersion) {
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log.verbose('install', 'version is no good; reinstalling')
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try {
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return await go()
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} catch (err) {
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return rollback(err)
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}
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}
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log.verbose('install', 'version is good')
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if (win) {
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log.verbose('on Windows; need to check node.lib')
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const nodeLibPath = path.resolve(devDir, arch, 'node.lib')
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try {
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await fs.stat(nodeLibPath)
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} catch (err) {
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if (err.code === 'ENOENT') {
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log.verbose('install', `version not already installed for ${arch}, continuing with install`, release.version)
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try {
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shouldDownloadTarball = false
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return await go()
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} catch (err) {
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return rollback(err)
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}
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} else if (err.code === 'EACCES') {
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return eaccesFallback(err)
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}
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throw err
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}
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}
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} else {
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try {
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return await go()
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} catch (err) {
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return rollback(err)
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}
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}
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async function copyDirectory (src, dest) {
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try {
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await fs.stat(src)
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} catch {
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throw new Error(`Missing source directory for copy: ${src}`)
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}
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await fs.mkdir(dest, { recursive: true })
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const entries = await fs.readdir(src, { withFileTypes: true })
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for (const entry of entries) {
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if (entry.isDirectory()) {
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await copyDirectory(path.join(src, entry.name), path.join(dest, entry.name))
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} else if (entry.isFile()) {
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// with parallel installs, copying files may cause file errors on
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// Windows so use an exponential backoff to resolve collisions
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await backOff(async () => {
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try {
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await fs.copyFile(path.join(src, entry.name), path.join(dest, entry.name))
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} catch (err) {
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// if ensure, check if file already exists and that's good enough
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if (gyp.opts.ensure && err.code === 'EBUSY') {
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try {
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await fs.stat(path.join(dest, entry.name))
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return
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} catch {}
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}
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throw err
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}
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})
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} else {
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throw new Error('Unexpected file directory entry type')
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}
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}
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}
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async function go () {
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log.verbose('ensuring devDir is created', devDir)
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// first create the dir for the node dev files
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try {
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const created = await fs.mkdir(devDir, { recursive: true })
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if (created) {
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log.verbose('created devDir', created)
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}
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} catch (err) {
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if (err.code === 'EACCES') {
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return eaccesFallback(err)
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}
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throw err
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}
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// now download the node tarball
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const tarPath = gyp.opts.tarball
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let extractErrors = false
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let extractCount = 0
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const contentShasums = {}
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const expectShasums = {}
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// checks if a file to be extracted from the tarball is valid.
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// only .h header files and the gyp files get extracted
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function isValid (path) {
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const isValid = valid(path)
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if (isValid) {
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log.verbose('extracted file from tarball', path)
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extractCount++
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} else {
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// invalid
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log.silly('ignoring from tarball', path)
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}
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return isValid
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}
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function onwarn (code, message) {
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extractErrors = true
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log.error('error while extracting tarball', code, message)
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}
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// download the tarball and extract!
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// Ommited on Windows if only new node.lib is required
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// on Windows there can be file errors from tar if parallel installs
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// are happening (not uncommon with multiple native modules) so
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// extract the tarball to a temp directory first and then copy over
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const tarExtractDir = win ? await fs.mkdtemp(path.join(os.tmpdir(), 'node-gyp-tmp-')) : devDir
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try {
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if (shouldDownloadTarball) {
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if (tarPath) {
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await tar.extract({
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file: tarPath,
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strip: 1,
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filter: isValid,
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onwarn,
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cwd: tarExtractDir
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})
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} else {
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try {
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const res = await download(gyp, release.tarballUrl)
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if (res.status !== 200) {
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throw new Error(`${res.status} response downloading ${release.tarballUrl}`)
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}
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await pipeline(
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res.body,
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// content checksum
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new ShaSum((_, checksum) => {
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const filename = path.basename(release.tarballUrl).trim()
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contentShasums[filename] = checksum
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log.verbose('content checksum', filename, checksum)
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}),
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tar.extract({
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strip: 1,
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cwd: tarExtractDir,
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filter: isValid,
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onwarn
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})
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)
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} catch (err) {
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// something went wrong downloading the tarball?
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if (err.code === 'ENOTFOUND') {
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throw new Error('This is most likely not a problem with node-gyp or the package itself and\n' +
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'is related to network connectivity. In most cases you are behind a proxy or have bad \n' +
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'network settings.')
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}
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throw err
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}
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}
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// invoked after the tarball has finished being extracted
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if (extractErrors || extractCount === 0) {
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throw new Error('There was a fatal problem while downloading/extracting the tarball')
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}
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log.verbose('tarball', 'done parsing tarball')
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}
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const installVersionPath = path.resolve(tarExtractDir, 'installVersion')
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await Promise.all([
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// need to download node.lib
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...(win ? [downloadNodeLib()] : []),
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// write the "installVersion" file
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fs.writeFile(installVersionPath, gyp.package.installVersion + '\n'),
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// Only download SHASUMS.txt if we downloaded something in need of SHA verification
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...(!tarPath || win ? [downloadShasums()] : [])
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])
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log.verbose('download contents checksum', JSON.stringify(contentShasums))
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// check content shasums
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for (const k in contentShasums) {
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log.verbose('validating download checksum for ' + k, '(%s == %s)', contentShasums[k], expectShasums[k])
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if (contentShasums[k] !== expectShasums[k]) {
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throw new Error(k + ' local checksum ' + contentShasums[k] + ' not match remote ' + expectShasums[k])
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}
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}
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// copy over the files from the temp tarball extract directory to devDir
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if (tarExtractDir !== devDir) {
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await copyDirectory(tarExtractDir, devDir)
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}
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} finally {
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if (tarExtractDir !== devDir) {
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try {
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// try to cleanup temp dir
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await fs.rm(tarExtractDir, { recursive: true })
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} catch {
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log.warn('failed to clean up temp tarball extract directory')
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}
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}
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}
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async function downloadShasums () {
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log.verbose('check download content checksum, need to download `SHASUMS256.txt`...')
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log.verbose('checksum url', release.shasumsUrl)
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const res = await download(gyp, release.shasumsUrl)
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if (res.status !== 200) {
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throw new Error(`${res.status} status code downloading checksum`)
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}
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for (const line of (await res.text()).trim().split('\n')) {
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const items = line.trim().split(/\s+/)
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if (items.length !== 2) {
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return
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}
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// 0035d18e2dcf9aad669b1c7c07319e17abfe3762 ./node-v0.11.4.tar.gz
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const name = items[1].replace(/^\.\//, '')
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expectShasums[name] = items[0]
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}
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log.verbose('checksum data', JSON.stringify(expectShasums))
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}
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async function downloadNodeLib () {
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log.verbose('on Windows; need to download `' + release.name + '.lib`...')
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const dir = path.resolve(tarExtractDir, arch)
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const targetLibPath = path.resolve(dir, release.name + '.lib')
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const { libUrl, libPath } = release[arch]
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const name = `${arch} ${release.name}.lib`
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log.verbose(name, 'dir', dir)
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log.verbose(name, 'url', libUrl)
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await fs.mkdir(dir, { recursive: true })
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log.verbose('streaming', name, 'to:', targetLibPath)
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const res = await download(gyp, libUrl)
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// Since only required node.lib is downloaded throw error if it is not fetched
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if (res.status !== 200) {
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throw new Error(`${res.status} status code downloading ${name}`)
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}
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return pipeline(
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res.body,
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new ShaSum((_, checksum) => {
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contentShasums[libPath] = checksum
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log.verbose('content checksum', libPath, checksum)
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}),
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createWriteStream(targetLibPath)
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)
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} // downloadNodeLib()
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} // go()
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/**
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* Checks if a given filename is "valid" for this installation.
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*/
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function valid (file) {
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// header files
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const extname = path.extname(file)
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return extname === '.h' || extname === '.gypi'
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}
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async function rollback (err) {
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log.warn('install', 'got an error, rolling back install')
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// roll-back the install if anything went wrong
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await gyp.commands.remove([release.versionDir])
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throw err
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}
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/**
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* The EACCES fallback is a workaround for npm's `sudo` behavior, where
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* it drops the permissions before invoking any child processes (like
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* node-gyp). So what happens is the "nobody" user doesn't have
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* permission to create the dev dir. As a fallback, make the tmpdir() be
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* the dev dir for this installation. This is not ideal, but at least
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* the compilation will succeed...
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*/
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async function eaccesFallback (err) {
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const noretry = '--node_gyp_internal_noretry'
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if (argv.indexOf(noretry) !== -1) {
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throw err
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}
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const tmpdir = os.tmpdir()
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gyp.devDir = path.resolve(tmpdir, '.node-gyp')
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let userString = ''
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try {
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// os.userInfo can fail on some systems, it's not critical here
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userString = ` ("${os.userInfo().username}")`
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} catch (e) {}
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log.warn('EACCES', 'current user%s does not have permission to access the dev dir "%s"', userString, devDir)
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log.warn('EACCES', 'attempting to reinstall using temporary dev dir "%s"', gyp.devDir)
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if (process.cwd() === tmpdir) {
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log.verbose('tmpdir == cwd', 'automatically will remove dev files after to save disk space')
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gyp.todo.push({ name: 'remove', args: argv })
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}
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return gyp.commands.install([noretry].concat(argv))
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}
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}
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class ShaSum extends Transform {
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constructor (callback) {
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super()
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this._callback = callback
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this._digester = crypto.createHash('sha256')
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}
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_transform (chunk, _, callback) {
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this._digester.update(chunk)
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callback(null, chunk)
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}
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_flush (callback) {
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this._callback(null, this._digester.digest('hex'))
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callback()
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}
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}
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module.exports = install
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module.exports.usage = 'Install node development files for the specified node version.'
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