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Edit File : git.js \| Size : 8.15 KB
'use strict' const BB = require('bluebird') const cp = require('child_process') const execFileAsync = BB.promisify(cp.execFile, { multiArgs: true }) const finished = require('./finished') const LRU = require('lru-cache') const optCheck = require('./opt-check') const osenv = require('osenv') const path = require('path') const pinflight = require('promise-inflight') const promiseRetry = require('promise-retry') const uniqueFilename = require('unique-filename') const which = BB.promisify(require('which')) const semver = require('semver') const inferOwner = require('infer-owner') const GOOD_ENV_VARS = new Set([ 'GIT_ASKPASS', 'GIT_EXEC_PATH', 'GIT_PROXY_COMMAND', 'GIT_SSH', 'GIT_SSH_COMMAND', 'GIT_SSL_CAINFO', 'GIT_SSL_NO_VERIFY' ]) const GIT_TRANSIENT_ERRORS = [ 'remote error: Internal Server Error', 'The remote end hung up unexpectedly', 'Connection timed out', 'Operation timed out', 'Failed to connect to .* Timed out', 'Connection reset by peer', 'SSL_ERROR_SYSCALL', 'The requested URL returned error: 503' ].join('\|') const GIT_TRANSIENT_ERROR_RE = new RegExp(GIT_TRANSIENT_ERRORS) const GIT_TRANSIENT_ERROR_MAX_RETRY_NUMBER = 3 function shouldRetry (error, number) { return GIT_TRANSIENT_ERROR_RE.test(error) && (number < GIT_TRANSIENT_ERROR_MAX_RETRY_NUMBER) } const GIT_ = 'GIT_' let GITENV function gitEnv () { if (GITENV) { return GITENV } const tmpDir = path.join(osenv.tmpdir(), 'pacote-git-template-tmp') const tmpName = uniqueFilename(tmpDir, 'git-clone') GITENV = { GIT_ASKPASS: 'echo', GIT_TEMPLATE_DIR: tmpName } Object.keys(process.env).forEach(k => { if (GOOD_ENV_VARS.has(k) \|\| !k.startsWith(GIT_)) { GITENV[k] = process.env[k] } }) return GITENV } let GITPATH try { GITPATH = which.sync('git') } catch (e) {} module.exports.clone = fullClone function fullClone (repo, committish, target, opts) { opts = optCheck(opts) const gitArgs = ['clone', '--mirror', '-q', repo, path.join(target, '.git')] if (process.platform === 'win32') { gitArgs.push('--config', 'core.longpaths=true') } return execGit(gitArgs, { cwd: target }, opts).then(() => { return execGit(['init'], { cwd: target }, opts) }).then(() => { return execGit(['checkout', committish \|\| 'HEAD'], { cwd: target }, opts) }).then(() => { return updateSubmodules(target, opts) }).then(() => headSha(target, opts)) } module.exports.shallow = shallowClone function shallowClone (repo, branch, target, opts) { opts = optCheck(opts) const gitArgs = ['clone', '--depth=1', '-q'] if (branch) { gitArgs.push('-b', branch) } gitArgs.push(repo, target) if (process.platform === 'win32') { gitArgs.push('--config', 'core.longpaths=true') } return execGit(gitArgs, { cwd: target }, opts).then(() => { return updateSubmodules(target, opts) }).then(() => headSha(target, opts)) } function updateSubmodules (localRepo, opts) { const gitArgs = ['submodule', 'update', '-q', '--init', '--recursive'] return execGit(gitArgs, { cwd: localRepo }, opts) } function headSha (repo, opts) { opts = optCheck(opts) return execGit(['rev-parse', '--revs-only', 'HEAD'], { cwd: repo }, opts).spread(stdout => { return stdout.trim() }) } const CARET_BRACES = '^{}' const REVS = new LRU({ max: 100, maxAge: 5 * 60 * 1000 }) module.exports.revs = revs function revs (repo, opts) { opts = optCheck(opts) const cached = REVS.get(repo) if (cached) { return BB.resolve(cached) } return pinflight(`ls-remote:${repo}`, () => { return spawnGit(['ls-remote', '-h', '-t', repo], { env: gitEnv() }, opts).then((stdout) => { return stdout.split('\n').reduce((revs, line) => { const split = line.split(/\s+/, 2) if (split.length < 2) { return revs } const sha = split[0].trim() const ref = split[1].trim().match(/(?:refs\/[^/]+\/)?(.*)/)[1] if (!ref) { return revs } // ??? if (ref.endsWith(CARET_BRACES)) { return revs } // refs/tags/x^{} crap const type = refType(line) const doc = { sha, ref, type } revs.refs[ref] = doc // We can check out shallow clones on specific SHAs if we have a ref if (revs.shas[sha]) { revs.shas[sha].push(ref) } else { revs.shas[sha] = [ref] } if (type === 'tag') { const match = ref.match(/v?(\d+\.\d+\.\d+(?:[-+].+)?)$/) if (match && semver.valid(match[1], true)) { revs.versions[semver.clean(match[1], true)] = doc } } return revs }, { versions: {}, 'dist-tags': {}, refs: {}, shas: {} }) }, err => { err.message = `Error while executing:\n${GITPATH} ls-remote -h -t ${repo}\n\n${err.stderr}\n${err.message}` throw err }).then(revs => { if (revs.refs.HEAD) { const HEAD = revs.refs.HEAD Object.keys(revs.versions).forEach(v => { if (v.sha === HEAD.sha) { revs['dist-tags'].HEAD = v if (!revs.refs.latest) { revs['dist-tags'].latest = revs.refs.HEAD } } }) } REVS.set(repo, revs) return revs }) }) } // infer the owner from the cwd git is operating in, if not the // process cwd, but only if we're root. // See: https://github.com/npm/cli/issues/624 module.exports._cwdOwner = cwdOwner function cwdOwner (gitOpts, opts) { const isRoot = process.getuid && process.getuid() === 0 if (!isRoot \|\| !gitOpts.cwd) { return Promise.resolve() } return BB.resolve(inferOwner(gitOpts.cwd).then(owner => { gitOpts.uid = owner.uid gitOpts.gid = owner.gid })) } module.exports._exec = execGit function execGit (gitArgs, gitOpts, opts) { opts = optCheck(opts) return BB.resolve(cwdOwner(gitOpts, opts).then(() => checkGit(opts).then(gitPath => { return promiseRetry((retry, number) => { if (number !== 1) { opts.log.silly('pacote', 'Retrying git command: ' + gitArgs.join(' ') + ' attempt # ' + number) } return execFileAsync(gitPath, gitArgs, mkOpts(gitOpts, opts)).catch((err) => { if (shouldRetry(err, number)) { retry(err) } else { throw err } }) }, opts.retry != null ? opts.retry : { retries: opts['fetch-retries'], factor: opts['fetch-retry-factor'], maxTimeout: opts['fetch-retry-maxtimeout'], minTimeout: opts['fetch-retry-mintimeout'] }) }))) } module.exports._spawn = spawnGit function spawnGit (gitArgs, gitOpts, opts) { opts = optCheck(opts) return BB.resolve(cwdOwner(gitOpts, opts).then(() => checkGit(opts).then(gitPath => { return promiseRetry((retry, number) => { if (number !== 1) { opts.log.silly('pacote', 'Retrying git command: ' + gitArgs.join(' ') + ' attempt # ' + number) } const child = cp.spawn(gitPath, gitArgs, mkOpts(gitOpts, opts)) let stdout = '' let stderr = '' child.stdout.on('data', d => { stdout += d }) child.stderr.on('data', d => { stderr += d }) return finished(child, true).catch(err => { if (shouldRetry(stderr, number)) { retry(err) } else { err.stderr = stderr throw err } }).then(() => { return stdout }) }, opts.retry) }))) } module.exports._mkOpts = mkOpts function mkOpts (_gitOpts, opts) { const gitOpts = { env: gitEnv() } const isRoot = process.getuid && process.getuid() === 0 // don't change child process uid/gid if not root if (+opts.uid && !isNaN(opts.uid) && isRoot) { gitOpts.uid = +opts.uid } if (+opts.gid && !isNaN(opts.gid) && isRoot) { gitOpts.gid = +opts.gid } Object.assign(gitOpts, _gitOpts) return gitOpts } function checkGit (opts) { if (opts.git) { return BB.resolve(opts.git) } else if (!GITPATH) { const err = new Error('No git binary found in $PATH') err.code = 'ENOGIT' return BB.reject(err) } else { return BB.resolve(GITPATH) } } const REFS_TAGS = 'refs/tags/' const REFS_HEADS = 'refs/heads/' const HEAD = 'HEAD' function refType (ref) { return ref.indexOf(REFS_TAGS) !== -1 ? 'tag' : ref.indexOf(REFS_HEADS) !== -1 ? 'branch' : ref.endsWith(HEAD) ? 'head' : 'other' } Back

Edit File : git.js | Size : 8.15 KB

'use strict'

const BB = require('bluebird')

const cp = require('child_process')
const execFileAsync = BB.promisify(cp.execFile, {
  multiArgs: true
})
const finished = require('./finished')
const LRU = require('lru-cache')
const optCheck = require('./opt-check')
const osenv = require('osenv')
const path = require('path')
const pinflight = require('promise-inflight')
const promiseRetry = require('promise-retry')
const uniqueFilename = require('unique-filename')
const which = BB.promisify(require('which'))
const semver = require('semver')
const inferOwner = require('infer-owner')

const GOOD_ENV_VARS = new Set([
  'GIT_ASKPASS',
  'GIT_EXEC_PATH',
  'GIT_PROXY_COMMAND',
  'GIT_SSH',
  'GIT_SSH_COMMAND',
  'GIT_SSL_CAINFO',
  'GIT_SSL_NO_VERIFY'
])

const GIT_TRANSIENT_ERRORS = [
  'remote error: Internal Server Error',
  'The remote end hung up unexpectedly',
  'Connection timed out',
  'Operation timed out',
  'Failed to connect to .* Timed out',
  'Connection reset by peer',
  'SSL_ERROR_SYSCALL',
  'The requested URL returned error: 503'
].join('|')

const GIT_TRANSIENT_ERROR_RE = new RegExp(GIT_TRANSIENT_ERRORS)

const GIT_TRANSIENT_ERROR_MAX_RETRY_NUMBER = 3

function shouldRetry (error, number) {
  return GIT_TRANSIENT_ERROR_RE.test(error) && (number < GIT_TRANSIENT_ERROR_MAX_RETRY_NUMBER)
}

const GIT_ = 'GIT_'
let GITENV
function gitEnv () {
  if (GITENV) { return GITENV }
  const tmpDir = path.join(osenv.tmpdir(), 'pacote-git-template-tmp')
  const tmpName = uniqueFilename(tmpDir, 'git-clone')
  GITENV = {
    GIT_ASKPASS: 'echo',
    GIT_TEMPLATE_DIR: tmpName
  }
  Object.keys(process.env).forEach(k => {
    if (GOOD_ENV_VARS.has(k) || !k.startsWith(GIT_)) {
      GITENV[k] = process.env[k]
    }
  })
  return GITENV
}

let GITPATH
try {
  GITPATH = which.sync('git')
} catch (e) {}

module.exports.clone = fullClone
function fullClone (repo, committish, target, opts) {
  opts = optCheck(opts)
  const gitArgs = ['clone', '--mirror', '-q', repo, path.join(target, '.git')]
  if (process.platform === 'win32') {
    gitArgs.push('--config', 'core.longpaths=true')
  }
  return execGit(gitArgs, { cwd: target }, opts).then(() => {
    return execGit(['init'], { cwd: target }, opts)
  }).then(() => {
    return execGit(['checkout', committish || 'HEAD'], { cwd: target }, opts)
  }).then(() => {
    return updateSubmodules(target, opts)
  }).then(() => headSha(target, opts))
}

module.exports.shallow = shallowClone
function shallowClone (repo, branch, target, opts) {
  opts = optCheck(opts)
  const gitArgs = ['clone', '--depth=1', '-q']
  if (branch) {
    gitArgs.push('-b', branch)
  }
  gitArgs.push(repo, target)
  if (process.platform === 'win32') {
    gitArgs.push('--config', 'core.longpaths=true')
  }
  return execGit(gitArgs, {
    cwd: target
  }, opts).then(() => {
    return updateSubmodules(target, opts)
  }).then(() => headSha(target, opts))
}

function updateSubmodules (localRepo, opts) {
  const gitArgs = ['submodule', 'update', '-q', '--init', '--recursive']
  return execGit(gitArgs, {
    cwd: localRepo
  }, opts)
}

function headSha (repo, opts) {
  opts = optCheck(opts)
  return execGit(['rev-parse', '--revs-only', 'HEAD'], { cwd: repo }, opts).spread(stdout => {
    return stdout.trim()
  })
}

const CARET_BRACES = '^{}'
const REVS = new LRU({
  max: 100,
  maxAge: 5 * 60 * 1000
})
module.exports.revs = revs
function revs (repo, opts) {
  opts = optCheck(opts)
  const cached = REVS.get(repo)
  if (cached) {
    return BB.resolve(cached)
  }
  return pinflight(`ls-remote:${repo}`, () => {
    return spawnGit(['ls-remote', '-h', '-t', repo], {
      env: gitEnv()
    }, opts).then((stdout) => {
      return stdout.split('\n').reduce((revs, line) => {
        const split = line.split(/\s+/, 2)
        if (split.length < 2) { return revs }
        const sha = split[0].trim()
        const ref = split[1].trim().match(/(?:refs\/[^/]+\/)?(.*)/)[1]
        if (!ref) { return revs } // ???
        if (ref.endsWith(CARET_BRACES)) { return revs } // refs/tags/x^{} crap
        const type = refType(line)
        const doc = { sha, ref, type }

revs.refs[ref] = doc
        // We can check out shallow clones on specific SHAs if we have a ref
        if (revs.shas[sha]) {
          revs.shas[sha].push(ref)
        } else {
          revs.shas[sha] = [ref]
        }

if (type === 'tag') {
          const match = ref.match(/v?(\d+\.\d+\.\d+(?:[-+].+)?)$/)
          if (match && semver.valid(match[1], true)) {
            revs.versions[semver.clean(match[1], true)] = doc
          }
        }

return revs
      }, { versions: {}, 'dist-tags': {}, refs: {}, shas: {} })
    }, err => {
      err.message = `Error while executing:\n${GITPATH} ls-remote -h -t ${repo}\n\n${err.stderr}\n${err.message}`
      throw err
    }).then(revs => {
      if (revs.refs.HEAD) {
        const HEAD = revs.refs.HEAD
        Object.keys(revs.versions).forEach(v => {
          if (v.sha === HEAD.sha) {
            revs['dist-tags'].HEAD = v
            if (!revs.refs.latest) {
              revs['dist-tags'].latest = revs.refs.HEAD
            }
          }
        })
      }
      REVS.set(repo, revs)
      return revs
    })
  })
}

// infer the owner from the cwd git is operating in, if not the
// process cwd, but only if we're root.
// See: https://github.com/npm/cli/issues/624
module.exports._cwdOwner = cwdOwner
function cwdOwner (gitOpts, opts) {
  const isRoot = process.getuid && process.getuid() === 0
  if (!isRoot || !gitOpts.cwd) { return Promise.resolve() }

return BB.resolve(inferOwner(gitOpts.cwd).then(owner => {
    gitOpts.uid = owner.uid
    gitOpts.gid = owner.gid
  }))
}

module.exports._exec = execGit
function execGit (gitArgs, gitOpts, opts) {
  opts = optCheck(opts)
  return BB.resolve(cwdOwner(gitOpts, opts).then(() => checkGit(opts).then(gitPath => {
    return promiseRetry((retry, number) => {
      if (number !== 1) {
        opts.log.silly('pacote', 'Retrying git command: ' + gitArgs.join(' ') + ' attempt # ' + number)
      }
      return execFileAsync(gitPath, gitArgs, mkOpts(gitOpts, opts)).catch((err) => {
        if (shouldRetry(err, number)) {
          retry(err)
        } else {
          throw err
        }
      })
    }, opts.retry != null ? opts.retry : {
      retries: opts['fetch-retries'],
      factor: opts['fetch-retry-factor'],
      maxTimeout: opts['fetch-retry-maxtimeout'],
      minTimeout: opts['fetch-retry-mintimeout']
    })
  })))
}

module.exports._spawn = spawnGit
function spawnGit (gitArgs, gitOpts, opts) {
  opts = optCheck(opts)
  return BB.resolve(cwdOwner(gitOpts, opts).then(() => checkGit(opts).then(gitPath => {
    return promiseRetry((retry, number) => {
      if (number !== 1) {
        opts.log.silly('pacote', 'Retrying git command: ' + gitArgs.join(' ') + ' attempt # ' + number)
      }
      const child = cp.spawn(gitPath, gitArgs, mkOpts(gitOpts, opts))

let stdout = ''
      let stderr = ''
      child.stdout.on('data', d => { stdout += d })
      child.stderr.on('data', d => { stderr += d })

return finished(child, true).catch(err => {
        if (shouldRetry(stderr, number)) {
          retry(err)
        } else {
          err.stderr = stderr
          throw err
        }
      }).then(() => {
        return stdout
      })
    }, opts.retry)
  })))
}

module.exports._mkOpts = mkOpts
function mkOpts (_gitOpts, opts) {
  const gitOpts = {
    env: gitEnv()
  }
  const isRoot = process.getuid && process.getuid() === 0
  // don't change child process uid/gid if not root
  if (+opts.uid && !isNaN(opts.uid) && isRoot) {
    gitOpts.uid = +opts.uid
  }
  if (+opts.gid && !isNaN(opts.gid) && isRoot) {
    gitOpts.gid = +opts.gid
  }
  Object.assign(gitOpts, _gitOpts)
  return gitOpts
}

function checkGit (opts) {
  if (opts.git) {
    return BB.resolve(opts.git)
  } else if (!GITPATH) {
    const err = new Error('No git binary found in $PATH')
    err.code = 'ENOGIT'
    return BB.reject(err)
  } else {
    return BB.resolve(GITPATH)
  }
}

const REFS_TAGS = 'refs/tags/'
const REFS_HEADS = 'refs/heads/'
const HEAD = 'HEAD'
function refType (ref) {
  return ref.indexOf(REFS_TAGS) !== -1
    ? 'tag'
    : ref.indexOf(REFS_HEADS) !== -1
      ? 'branch'
      : ref.endsWith(HEAD)
        ? 'head'
        : 'other'
}

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