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1 files changed, 118 insertions, 0 deletions

diff --git a/node_modules/registry-auth-token/index.js b/node_modules/registry-auth-token/index.js
new file mode 100644
index 00000000..d68f7eeb
--- /dev/null
+++ b/node_modules/registry-auth-token/index.js
@@ -0,0 +1,118 @@
+var url = require('url')
+var base64 = require('./base64')
+
+var decodeBase64 = base64.decodeBase64
+var encodeBase64 = base64.encodeBase64
+
+var tokenKey = ':_authToken'
+var userKey = ':username'
+var passwordKey = ':_password'
+
+module.exports = function () {
+  var checkUrl
+  var options
+  if (arguments.length >= 2) {
+    checkUrl = arguments[0]
+    options = arguments[1]
+  } else if (typeof arguments[0] === 'string') {
+    checkUrl = arguments[0]
+  } else {
+    options = arguments[0]
+  }
+  options = options || {}
+  options.npmrc = options.npmrc || require('rc')('npm', {registry: 'https://registry.npmjs.org/'})
+  checkUrl = checkUrl || options.npmrc.registry
+  return getRegistryAuthInfo(checkUrl, options) || getLegacyAuthInfo(options.npmrc)
+}
+
+function getRegistryAuthInfo (checkUrl, options) {
+  var parsed = url.parse(checkUrl, false, true)
+  var pathname
+
+  while (pathname !== '/' && parsed.pathname !== pathname) {
+    pathname = parsed.pathname || '/'
+
+    var regUrl = '//' + parsed.host + pathname.replace(/\/$/, '')
+    var authInfo = getAuthInfoForUrl(regUrl, options.npmrc)
+    if (authInfo) {
+      return authInfo
+    }
+
+    // break if not recursive
+    if (!options.recursive) {
+      return /\/$/.test(checkUrl)
+        ? undefined
+        : getRegistryAuthInfo(url.resolve(checkUrl, '.'), options)
+    }
+
+    parsed.pathname = url.resolve(normalizePath(pathname), '..') || '/'
+  }
+
+  return undefined
+}
+
+function getLegacyAuthInfo (npmrc) {
+  if (npmrc._auth) {
+    return {token: npmrc._auth, type: 'Basic'}
+  }
+  return undefined
+}
+
+function normalizePath (path) {
+  return path[path.length - 1] === '/' ? path : path + '/'
+}
+
+function getAuthInfoForUrl (regUrl, npmrc) {
+  // try to get bearer token
+  var bearerAuth = getBearerToken(npmrc[regUrl + tokenKey] || npmrc[regUrl + '/' + tokenKey])
+  if (bearerAuth) {
+    return bearerAuth
+  }
+
+  // try to get basic token
+  var username = npmrc[regUrl + userKey] || npmrc[regUrl + '/' + userKey]
+  var password = npmrc[regUrl + passwordKey] || npmrc[regUrl + '/' + passwordKey]
+  var basicAuth = getTokenForUsernameAndPassword(username, password)
+  if (basicAuth) {
+    return basicAuth
+  }
+
+  return undefined
+}
+
+function getBearerToken (tok) {
+  if (!tok) {
+    return undefined
+  }
+
+  // check if bearer token
+  var token = tok.replace(/^\$\{?([^}]*)\}?$/, function (fullMatch, envVar) {
+    return process.env[envVar]
+  })
+
+  return {token: token, type: 'Bearer'}
+}
+
+function getTokenForUsernameAndPassword (username, password) {
+  if (!username || !password) {
+    return undefined
+  }
+
+  // passwords are base64 encoded, so we need to decode it
+  // See https://github.com/npm/npm/blob/v3.10.6/lib/config/set-credentials-by-uri.js#L26
+  var pass = decodeBase64(password.replace(/^\$\{?([^}]*)\}?$/, function (fullMatch, envVar) {
+    return process.env[envVar]
+  }))
+
+  // a basic auth token is base64 encoded 'username:password'
+  // See https://github.com/npm/npm/blob/v3.10.6/lib/config/get-credentials-by-uri.js#L70
+  var token = encodeBase64(username + ':' + pass)
+
+  // we found a basicToken token so let's exit the loop
+  return {
+    token: token,
+    type: 'Basic',
+    password: pass,
+    username: username
+  }
+}