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Mini Shell
'use strict'
const BB = require('bluebird')
const cacache = require('cacache')
const cacheKey = require('./util/cache-key')
const fetchFromManifest = require('./fetch').fromManifest
const finished = require('./util/finished')
const minimatch = require('minimatch')
const normalize = require('normalize-package-data')
const optCheck = require('./util/opt-check')
const path = require('path')
const pipe = BB.promisify(require('mississippi').pipe)
const ssri = require('ssri')
const tar = require('tar')
const readJson = require('./util/read-json')
const normalizePackageBin = require('npm-normalize-package-bin')
// `finalizeManifest` takes as input the various kinds of manifests that
// manifest handlers ('lib/fetchers/*.js#manifest()') return, and makes sure
// they are:
//
// * filled out with any required data that the handler couldn't fill in
// * formatted consistently
// * cached so we don't have to repeat this work more than necessary
//
// The biggest thing this package might do is do a full tarball extraction in
// order to find missing bits of metadata required by the npm installer. For
// example, it will fill in `_shrinkwrap`, `_integrity`, and other details that
// the plain manifest handlers would require a tarball to fill out. If a
// handler returns everything necessary, this process is skipped.
//
// If we get to the tarball phase, the corresponding tarball handler for the
// requested type will be invoked and the entire tarball will be read from the
// stream.
//
module.exports = finalizeManifest
function finalizeManifest (pkg, spec, opts) {
const key = finalKey(pkg, spec)
opts = optCheck(opts)
const cachedManifest = (opts.cache && key && !opts.preferOnline && !opts.fullMetadata && !opts.enjoyBy)
? cacache.get.info(opts.cache, key, opts)
: BB.resolve(null)
return cachedManifest.then(cached => {
if (cached && cached.metadata && cached.metadata.manifest) {
return new Manifest(cached.metadata.manifest)
} else {
return tarballedProps(pkg, spec, opts).then(props => {
return pkg && pkg.name
? new Manifest(pkg, props, opts.fullMetadata)
: new Manifest(props, null, opts.fullMetadata)
}).then(manifest => {
const cacheKey = key || finalKey(manifest, spec)
if (!opts.cache || !cacheKey) {
return manifest
} else {
return cacache.put(
opts.cache, cacheKey, '.', {
metadata: {
id: manifest._id,
manifest,
type: 'finalized-manifest'
}
}
).then(() => manifest)
}
})
}
})
}
module.exports.Manifest = Manifest
function Manifest (pkg, fromTarball, fullMetadata) {
fromTarball = fromTarball || {}
if (fullMetadata) {
Object.assign(this, pkg)
}
this.name = pkg.name
this.version = pkg.version
this.engines = pkg.engines || fromTarball.engines
this.cpu = pkg.cpu || fromTarball.cpu
this.os = pkg.os || fromTarball.os
this.dependencies = pkg.dependencies || {}
this.optionalDependencies = pkg.optionalDependencies || {}
this.peerDependenciesMeta = pkg.peerDependenciesMeta || {}
this.devDependencies = pkg.devDependencies || {}
const bundled = (
pkg.bundledDependencies ||
pkg.bundleDependencies ||
false
)
this.bundleDependencies = bundled
this.peerDependencies = pkg.peerDependencies || {}
this.deprecated = pkg.deprecated || false
// These depend entirely on each handler
this._resolved = pkg._resolved
// Not all handlers (or registries) provide these out of the box,
// and if they don't, we need to extract and read the tarball ourselves.
// These are details required by the installer.
this._integrity = pkg._integrity || fromTarball._integrity || null
this._shasum = pkg._shasum || fromTarball._shasum || null
this._shrinkwrap = pkg._shrinkwrap || fromTarball._shrinkwrap || null
this.bin = pkg.bin || fromTarball.bin || null
// turn arrays and strings into a legit object, strip out bad stuff
normalizePackageBin(this)
this._id = null
// TODO - freezing and inextensibility pending npm changes. See test suite.
// Object.preventExtensions(this)
normalize(this)
// I don't want this why did you give it to me. Go away. 🔥🔥🔥🔥
delete this.readme
// Object.freeze(this)
}
// Some things aren't filled in by standard manifest fetching.
// If this function needs to do its work, it will grab the
// package tarball, extract it, and take whatever it needs
// from the stream.
function tarballedProps (pkg, spec, opts) {
const needsShrinkwrap = (!pkg || (
pkg._hasShrinkwrap !== false &&
!pkg._shrinkwrap
))
const needsBin = !!(!pkg || (
!pkg.bin &&
pkg.directories &&
pkg.directories.bin
))
const needsIntegrity = !pkg || (!pkg._integrity && pkg._integrity !== false)
const needsShasum = !pkg || (!pkg._shasum && pkg._shasum !== false)
const needsHash = needsIntegrity || needsShasum
const needsManifest = !pkg || !pkg.name
const needsExtract = needsShrinkwrap || needsBin || needsManifest
if (!needsShrinkwrap && !needsBin && !needsHash && !needsManifest) {
return BB.resolve({})
} else {
opts = optCheck(opts)
const tarStream = fetchFromManifest(pkg, spec, opts)
const extracted = needsExtract && new tar.Parse()
return BB.join(
needsShrinkwrap && jsonFromStream('npm-shrinkwrap.json', extracted),
needsManifest && jsonFromStream('package.json', extracted),
needsBin && getPaths(extracted),
needsHash && ssri.fromStream(tarStream, { algorithms: ['sha1', 'sha512'] }),
needsExtract && pipe(tarStream, extracted),
(sr, mani, paths, hash) => {
if (needsManifest && !mani) {
const err = new Error(`Non-registry package missing package.json: ${spec}.`)
err.code = 'ENOPACKAGEJSON'
throw err
}
const extraProps = mani || {}
delete extraProps._resolved
// drain out the rest of the tarball
tarStream.resume()
// if we have directories.bin, we need to collect any matching files
// to add to bin
if (paths && paths.length) {
const dirBin = mani
? (mani && mani.directories && mani.directories.bin)
: (pkg && pkg.directories && pkg.directories.bin)
if (dirBin) {
extraProps.bin = {}
paths.forEach(filePath => {
if (minimatch(filePath, dirBin + '/**')) {
const relative = path.relative(dirBin, filePath)
if (relative && relative[0] !== '.') {
extraProps.bin[path.basename(relative)] = path.join(dirBin, relative)
}
}
})
}
}
return Object.assign(extraProps, {
_shrinkwrap: sr,
_resolved: (mani && mani._resolved) ||
(pkg && pkg._resolved) ||
spec.fetchSpec,
_integrity: needsIntegrity && hash && hash.sha512 && hash.sha512[0].toString(),
_shasum: needsShasum && hash && hash.sha1 && hash.sha1[0].hexDigest()
})
}
)
}
}
function jsonFromStream (filename, dataStream) {
return BB.fromNode(cb => {
dataStream.on('error', cb)
dataStream.on('close', cb)
dataStream.on('entry', entry => {
const filePath = entry.header.path.replace(/[^/]+\//, '')
if (filePath !== filename) {
entry.resume()
} else {
let data = ''
entry.on('error', cb)
finished(entry).then(() => {
try {
cb(null, readJson(data))
} catch (err) {
cb(err)
}
}, err => {
cb(err)
})
entry.on('data', d => { data += d })
}
})
})
}
function getPaths (dataStream) {
return BB.fromNode(cb => {
let paths = []
dataStream.on('error', cb)
dataStream.on('close', () => cb(null, paths))
dataStream.on('entry', function handler (entry) {
const filePath = entry.header.path.replace(/[^/]+\//, '')
entry.resume()
paths.push(filePath)
})
})
}
function finalKey (pkg, spec) {
if (pkg && pkg._uniqueResolved) {
// git packages have a unique, identifiable id, but no tar sha
return cacheKey(`${spec.type}-manifest`, pkg._uniqueResolved)
} else {
return (
pkg && pkg._integrity &&
cacheKey(
`${spec.type}-manifest`,
`${pkg._resolved}:${ssri.stringify(pkg._integrity)}`
)
)
}
}
Zerion Mini Shell 1.0