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File Name : install.js

module.exports = exports = install

module.exports.test = { download: download, readCAFile: readCAFile }

exports.usage = 'Install node development files for the specified node version.'

/**
 * Module dependencies.
 */

var fs = require('graceful-fs')
  , osenv = require('osenv')
  , tar = require('tar')
  , rm = require('rimraf')
  , path = require('path')
  , crypto = require('crypto')
  , zlib = require('zlib')
  , log = require('npmlog')
  , semver = require('semver')
  , fstream = require('fstream')
  , request = require('request')
  , minimatch = require('minimatch')
  , mkdir = require('mkdirp')
  , processRelease = require('./process-release')
  , win = process.platform == 'win32'

function install (gyp, argv, callback) {

var release = processRelease(argv, gyp, process.version, process.release)

// ensure no double-callbacks happen
  function cb (err) {
    if (cb.done) return
    cb.done = true
    if (err) {
      log.warn('install', 'got an error, rolling back install')
      // roll-back the install if anything went wrong
      gyp.commands.remove([ release.versionDir ], function (err2) {
        callback(err)
      })
    } else {
      callback(null, release.version)
    }
  }

// 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
    return callback(new Error('Invalid version number: ' + release.version))
  }

if (semver.lt(release.version, '0.8.0')) {
    return callback(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) {
      log.verbose('--nodedir flag was passed; skipping install', gyp.opts.nodedir)
      callback()
    } else {
      callback(new Error('"pre" versions of node cannot be installed, use the --nodedir flag instead'))
    }
    return
  }

// flatten version into String
  log.verbose('install', 'installing version: %s', release.versionDir)

// the directory where the dev files will be installed
  var 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')
    fs.stat(devDir, function (err, stat) {
      if (err) {
        if (err.code == 'ENOENT') {
          log.verbose('install', 'version not already installed, continuing with install', release.version)
          go()
        } else if (err.code == 'EACCES') {
          eaccesFallback()
        } else {
          cb(err)
        }
        return
      }
      log.verbose('install', 'version is already installed, need to check "installVersion"')
      var installVersionFile = path.resolve(devDir, 'installVersion')
      fs.readFile(installVersionFile, 'ascii', function (err, ver) {
        if (err && err.code != 'ENOENT') {
          return cb(err)
        }
        var installVersion = parseInt(ver, 10) || 0
        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')
          go()
        } else {
          log.verbose('install', 'version is good')
          cb()
        }
      })
    })
  } else {
    go()
  }

function getContentSha(res, callback) {
    var shasum = crypto.createHash('sha256')
    res.on('data', function (chunk) {
      shasum.update(chunk)
    }).on('end', function () {
      callback(null, shasum.digest('hex'))
    })
  }

function go () {

log.verbose('ensuring nodedir is created', devDir)

// first create the dir for the node dev files
    mkdir(devDir, function (err, created) {
      if (err) {
        if (err.code == 'EACCES') {
          eaccesFallback()
        } else {
          cb(err)
        }
        return
      }

if (created) {
        log.verbose('created nodedir', created)
      }

// now download the node tarball
      var tarPath = gyp.opts.tarball
      var badDownload = false
        , extractCount = 0
        , gunzip = zlib.createGunzip()
        , extracter = tar.Extract({ path: devDir, strip: 1, filter: isValid })

var contentShasums = {}
      var 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 () {
        var name = this.path.substring(devDir.length + 1)
        var isValid = valid(name)
        if (name === '' && this.type === 'Directory') {
          // the first directory entry is ok
          return true
        }
        if (isValid) {
          log.verbose('extracted file from tarball', name)
          extractCount++
        } else {
          // invalid
          log.silly('ignoring from tarball', name)
        }
        return isValid
      }

gunzip.on('error', cb)
      extracter.on('error', cb)
      extracter.on('end', afterTarball)

// download the tarball, gunzip and extract!

if (tarPath) {
        var input = fs.createReadStream(tarPath)
        input.pipe(gunzip).pipe(extracter)
        return
      }

try {
        var req = download(gyp, process.env, release.tarballUrl)
      } catch (e) {
        return cb(e)
      }

// something went wrong downloading the tarball?
      req.on('error', function (err) {
        if (err.code === 'ENOTFOUND') {
          return cb(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.'))
        }
        badDownload = true
        cb(err)
      })

req.on('close', function () {
        if (extractCount === 0) {
          cb(new Error('Connection closed while downloading tarball file'))
        }
      })

req.on('response', function (res) {
        if (res.statusCode !== 200) {
          badDownload = true
          cb(new Error(res.statusCode + ' response downloading ' + release.tarballUrl))
          return
        }
        // content checksum
        getContentSha(res, function (_, checksum) {
          var filename = path.basename(release.tarballUrl).trim()
          contentShasums[filename] = checksum
          log.verbose('content checksum', filename, checksum)
        })

// start unzipping and untaring
        req.pipe(gunzip).pipe(extracter)
      })

// invoked after the tarball has finished being extracted
      function afterTarball () {
        if (badDownload) return
        if (extractCount === 0) {
          return cb(new Error('There was a fatal problem while downloading/extracting the tarball'))
        }
        log.verbose('tarball', 'done parsing tarball')
        var async = 0

if (win) {
          // need to download node.lib
          async++
          downloadNodeLib(deref)
        }

// write the "installVersion" file
        async++
        var installVersionPath = path.resolve(devDir, 'installVersion')
        fs.writeFile(installVersionPath, gyp.package.installVersion + '\n', deref)

// Only download SHASUMS.txt if not using tarPath override
        if (!tarPath) {
          // download SHASUMS.txt
          async++
          downloadShasums(deref)
        }

if (async === 0) {
          // no async tasks required
          cb()
        }

function deref (err) {
          if (err) return cb(err)

async--
          if (!async) {
            log.verbose('download contents checksum', JSON.stringify(contentShasums))
            // check content shasums
            for (var k in contentShasums) {
              log.verbose('validating download checksum for ' + k, '(%s == %s)', contentShasums[k], expectShasums[k])
              if (contentShasums[k] !== expectShasums[k]) {
                cb(new Error(k + ' local checksum ' + contentShasums[k] + ' not match remote ' + expectShasums[k]))
                return
              }
            }
            cb()
          }
        }
      }

function downloadShasums(done) {
        log.verbose('check download content checksum, need to download `SHASUMS256.txt`...')
        var shasumsPath = path.resolve(devDir, 'SHASUMS256.txt')

log.verbose('checksum url', release.shasumsUrl)
        try {
          var req = download(gyp, process.env, release.shasumsUrl)
        } catch (e) {
          return cb(e)
        }

req.on('error', done)
        req.on('response', function (res) {
          if (res.statusCode !== 200) {
            done(new Error(res.statusCode + ' status code downloading checksum'))
            return
          }

var chunks = []
          res.on('data', function (chunk) {
            chunks.push(chunk)
          })
          res.on('end', function () {
            var lines = Buffer.concat(chunks).toString().trim().split('\n')
            lines.forEach(function (line) {
              var items = line.trim().split(/\s+/)
              if (items.length !== 2) return

// 0035d18e2dcf9aad669b1c7c07319e17abfe3762  ./node-v0.11.4.tar.gz
              var name = items[1].replace(/^\.\//, '')
              expectShasums[name] = items[0]
            })

log.verbose('checksum data', JSON.stringify(expectShasums))
            done()
          })
        })
      }

function downloadNodeLib (done) {
        log.verbose('on Windows; need to download `' + release.name + '.lib`...')
        var dir32 = path.resolve(devDir, 'ia32')
          , dir64 = path.resolve(devDir, 'x64')
          , libPath32 = path.resolve(dir32, release.name + '.lib')
          , libPath64 = path.resolve(dir64, release.name + '.lib')

log.verbose('32-bit ' + release.name + '.lib dir', dir32)
        log.verbose('64-bit ' + release.name + '.lib dir', dir64)
        log.verbose('`' + release.name + '.lib` 32-bit url', release.libUrl32)
        log.verbose('`' + release.name + '.lib` 64-bit url', release.libUrl64)

var async = 2
        mkdir(dir32, function (err) {
          if (err) return done(err)
          log.verbose('streaming 32-bit ' + release.name + '.lib to:', libPath32)

try {
            var req = download(gyp, process.env, release.libUrl32, cb)
          } catch (e) {
            return cb(e)
          }

req.on('error', done)
          req.on('response', function (res) {
            if (res.statusCode !== 200) {
              done(new Error(res.statusCode + ' status code downloading 32-bit ' + release.name + '.lib'))
              return
            }

getContentSha(res, function (_, checksum) {
              contentShasums[release.libPath32] = checksum
              log.verbose('content checksum', release.libPath32, checksum)
            })

var ws = fs.createWriteStream(libPath32)
            ws.on('error', cb)
            req.pipe(ws)
          })
          req.on('end', function () {
            --async || done()
          })
        })
        mkdir(dir64, function (err) {
          if (err) return done(err)
          log.verbose('streaming 64-bit ' + release.name + '.lib to:', libPath64)

try {
            var req = download(gyp, process.env, release.libUrl64, cb)
          } catch (e) {
            return cb(e)
          }

req.on('error', done)
          req.on('response', function (res) {
            if (res.statusCode !== 200) {
              done(new Error(res.statusCode + ' status code downloading 64-bit ' + release.name + '.lib'))
              return
            }

getContentSha(res, function (_, checksum) {
              contentShasums[release.libPath64] = checksum
              log.verbose('content checksum', release.libPath64, checksum)
            })

var ws = fs.createWriteStream(libPath64)
            ws.on('error', cb)
            req.pipe(ws)
          })
          req.on('end', function () {
            --async || done()
          })
        })
      } // downloadNodeLib()

}) // mkdir()

} // go()

/**
   * Checks if a given filename is "valid" for this installation.
   */

function valid (file) {
    // header files
    return minimatch(file, '*.h', { matchBase: true }) ||
           minimatch(file, '*.gypi', { matchBase: true })
  }

/**
   * 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...
   */

function eaccesFallback () {
    var tmpdir = osenv.tmpdir()
    gyp.devDir = path.resolve(tmpdir, '.node-gyp')
    log.warn('EACCES', 'user "%s" does not have permission to access the dev dir "%s"', osenv.user(), 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 })
    }
    gyp.commands.install(argv, cb)
  }

}

function download (gyp, env, url) {
  log.http('GET', url)

var requestOpts = {
      uri: url
    , headers: {
        'User-Agent': 'node-gyp v' + gyp.version + ' (node ' + process.version + ')'
      }
  }

var cafile = gyp.opts.cafile
  if (cafile) {
    requestOpts.ca = readCAFile(cafile)
  }

// basic support for a proxy server
  var proxyUrl = gyp.opts.proxy
              || env.http_proxy
              || env.HTTP_PROXY
              || env.npm_config_proxy
  if (proxyUrl) {
    if (/^https?:\/\//i.test(proxyUrl)) {
      log.verbose('download', 'using proxy url: "%s"', proxyUrl)
      requestOpts.proxy = proxyUrl
    } else {
      log.warn('download', 'ignoring invalid "proxy" config setting: "%s"', proxyUrl)
    }
  }

var req = request(requestOpts)
  req.on('response', function (res) {
    log.http(res.statusCode, url)
  })

return req
}

function readCAFile (filename) {
  // The CA file can contain multiple certificates so split on certificate
  // boundaries.  [\S\s]*? is used to match everything including newlines.
  var ca = fs.readFileSync(filename, 'utf8')
  var re = /(-----BEGIN CERTIFICATE-----[\S\s]*?-----END CERTIFICATE-----)/g
  return ca.match(re)
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2024-03-03 10:41:42
..	dir	-	root/root	0755	2024-03-03 10:41:42
build.js	text/plain	7.83 KB	root/root	0644	2021-09-28 09:36:09
clean.js	text/plain	378 B	root/root	0644	2021-09-28 09:36:09
configure.js	text/plain	14.91 KB	root/root	0644	2021-09-28 09:36:09
find-node-directory.js	text/plain	2.33 KB	root/root	0644	2021-09-28 09:36:09
install.js	text/plain	14.62 KB	root/root	0644	2021-09-28 09:36:09
list.js	text/plain	718 B	root/root	0644	2021-09-28 09:36:09
node-gyp.js	text/plain	5.16 KB	root/root	0644	2021-09-28 09:36:09
process-release.js	text/plain	5.91 KB	root/root	0644	2021-09-28 09:36:09
rebuild.js	text/plain	308 B	root/root	0644	2021-09-28 09:36:09
remove.js	text/plain	1.29 KB	root/root	0644	2021-09-28 09:36:09

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