Changed alot of things.

2024-08-14 22:47:02 +00:00 · 2022-12-03 05:44:44 +00:00 · 2022-12-03 05:44:44 +00:00 · 3513d5390c
commit 3513d5390c
parent a5a0523e5a
2016 changed files with 336930 additions and 9 deletions
--- a/node_modules/aws4/.github/FUNDING.yml
+++ b/node_modules/aws4/.github/FUNDING.yml
@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: mhart
--- a/node_modules/aws4/.travis.yml
+++ b/node_modules/aws4/.travis.yml
@ -0,0 +1,9 @@
+language: node_js
+node_js:
+  - "0.10"
+  - "0.12"
+  - "4"
+  - "6"
+  - "8"
+  - "10"
+  - "12"
--- a/node_modules/aws4/LICENSE
+++ b/node_modules/aws4/LICENSE
@ -0,0 +1,19 @@
+Copyright 2013 Michael Hart (michael.hart.au@gmail.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/node_modules/aws4/README.md
+++ b/node_modules/aws4/README.md
@ -0,0 +1,183 @@
+aws4
+----
+
+[![Build Status](https://api.travis-ci.org/mhart/aws4.png?branch=master)](https://travis-ci.org/github/mhart/aws4)
+
+A small utility to sign vanilla Node.js http(s) request options using Amazon's
+[AWS Signature Version 4](https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html).
+
+If you want to sign and send AWS requests in a modern browser, or an environment like [Cloudflare Workers](https://developers.cloudflare.com/workers/), then check out [aws4fetch](https://github.com/mhart/aws4fetch) – otherwise you can also bundle this library for use [in older browsers](./browser).
+
+The only AWS service that *doesn't* support v4 as of 2020-05-22 is
+[SimpleDB](https://docs.aws.amazon.com/AmazonSimpleDB/latest/DeveloperGuide/SDB_API.html)
+(it only supports [AWS Signature Version 2](https://github.com/mhart/aws2)).
+
+It also provides defaults for a number of core AWS headers and
+request parameters, making it very easy to query AWS services, or
+build out a fully-featured AWS library.
+
+Example
+-------
+
+```javascript
+var https = require('https')
+var aws4  = require('aws4')
+
+// to illustrate usage, we'll create a utility function to request and pipe to stdout
+function request(opts) { https.request(opts, function(res) { res.pipe(process.stdout) }).end(opts.body || '') }
+
+// aws4 will sign an options object as you'd pass to http.request, with an AWS service and region
+var opts = { host: 'my-bucket.s3.us-west-1.amazonaws.com', path: '/my-object', service: 's3', region: 'us-west-1' }
+
+// aws4.sign() will sign and modify these options, ready to pass to http.request
+aws4.sign(opts, { accessKeyId: '', secretAccessKey: '' })
+
+// or it can get credentials from process.env.AWS_ACCESS_KEY_ID, etc
+aws4.sign(opts)
+
+// for most AWS services, aws4 can figure out the service and region if you pass a host
+opts = { host: 'my-bucket.s3.us-west-1.amazonaws.com', path: '/my-object' }
+
+// usually it will add/modify request headers, but you can also sign the query:
+opts = { host: 'my-bucket.s3.amazonaws.com', path: '/?X-Amz-Expires=12345', signQuery: true }
+
+// and for services with simple hosts, aws4 can infer the host from service and region:
+opts = { service: 'sqs', region: 'us-east-1', path: '/?Action=ListQueues' }
+
+// and if you're using us-east-1, it's the default:
+opts = { service: 'sqs', path: '/?Action=ListQueues' }
+
+aws4.sign(opts)
+console.log(opts)
+/*
+{
+  host: 'sqs.us-east-1.amazonaws.com',
+  path: '/?Action=ListQueues',
+  headers: {
+    Host: 'sqs.us-east-1.amazonaws.com',
+    'X-Amz-Date': '20121226T061030Z',
+    Authorization: 'AWS4-HMAC-SHA256 Credential=ABCDEF/20121226/us-east-1/sqs/aws4_request, ...'
+  }
+}
+*/
+
+// we can now use this to query AWS
+request(opts)
+/*
+<?xml version="1.0"?>
+<ListQueuesResponse xmlns="https://queue.amazonaws.com/doc/2012-11-05/">
+...
+*/
+
+// aws4 can infer the HTTP method if a body is passed in
+// method will be POST and Content-Type: 'application/x-www-form-urlencoded; charset=utf-8'
+request(aws4.sign({ service: 'iam', body: 'Action=ListGroups&Version=2010-05-08' }))
+/*
+<ListGroupsResponse xmlns="https://iam.amazonaws.com/doc/2010-05-08/">
+...
+*/
+
+// you can specify any custom option or header as per usual
+request(aws4.sign({
+  service: 'dynamodb',
+  region: 'ap-southeast-2',
+  method: 'POST',
+  path: '/',
+  headers: {
+    'Content-Type': 'application/x-amz-json-1.0',
+    'X-Amz-Target': 'DynamoDB_20120810.ListTables'
+  },
+  body: '{}'
+}))
+/*
+{"TableNames":[]}
+...
+*/
+
+// The raw RequestSigner can be used to generate CodeCommit Git passwords
+var signer = new aws4.RequestSigner({
+  service: 'codecommit',
+  host: 'git-codecommit.us-east-1.amazonaws.com',
+  method: 'GIT',
+  path: '/v1/repos/MyAwesomeRepo',
+})
+var password = signer.getDateTime() + 'Z' + signer.signature()
+
+// see example.js for examples with other services
+```
+
+API
+---
+
+### aws4.sign(requestOptions, [credentials])
+
+Calculates and populates any necessary AWS headers and/or request
+options on `requestOptions`. Returns `requestOptions` as a convenience for chaining.
+
+`requestOptions` is an object holding the same options that the Node.js
+[http.request](https://nodejs.org/docs/latest/api/http.html#http_http_request_options_callback)
+function takes.
+
+The following properties of `requestOptions` are used in the signing or
+populated if they don't already exist:
+
+- `hostname` or `host` (will try to be determined from `service` and `region` if not given)
+- `method` (will use `'GET'` if not given or `'POST'` if there is a `body`)
+- `path` (will use `'/'` if not given)
+- `body` (will use `''` if not given)
+- `service` (will try to be calculated from `hostname` or `host` if not given)
+- `region` (will try to be calculated from `hostname` or `host` or use `'us-east-1'` if not given)
+- `signQuery` (to sign the query instead of adding an `Authorization` header, defaults to false)
+- `headers['Host']` (will use `hostname` or `host` or be calculated if not given)
+- `headers['Content-Type']` (will use `'application/x-www-form-urlencoded; charset=utf-8'`
+  if not given and there is a `body`)
+- `headers['Date']` (used to calculate the signature date if given, otherwise `new Date` is used)
+
+Your AWS credentials (which can be found in your
+[AWS console](https://portal.aws.amazon.com/gp/aws/securityCredentials))
+can be specified in one of two ways:
+
+- As the second argument, like this:
+
+```javascript
+aws4.sign(requestOptions, {
+  secretAccessKey: "<your-secret-access-key>",
+  accessKeyId: "<your-access-key-id>",
+  sessionToken: "<your-session-token>"
+})
+```
+
+- From `process.env`, such as this:
+
+```
+export AWS_ACCESS_KEY_ID="<your-access-key-id>"
+export AWS_SECRET_ACCESS_KEY="<your-secret-access-key>"
+export AWS_SESSION_TOKEN="<your-session-token>"
+```
+
+(will also use `AWS_ACCESS_KEY` and `AWS_SECRET_KEY` if available)
+
+The `sessionToken` property and `AWS_SESSION_TOKEN` environment variable are optional for signing
+with [IAM STS temporary credentials](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_use-resources.html).
+
+Installation
+------------
+
+With [npm](https://www.npmjs.com/) do:
+
+```
+npm install aws4
+```
+
+Can also be used [in the browser](./browser).
+
+Thanks
+------
+
+Thanks to [@jed](https://github.com/jed) for his
+[dynamo-client](https://github.com/jed/dynamo-client) lib where I first
+committed and subsequently extracted this code.
+
+Also thanks to the
+[official Node.js AWS SDK](https://github.com/aws/aws-sdk-js) for giving
+me a start on implementing the v4 signature.
--- a/node_modules/aws4/aws4.js
+++ b/node_modules/aws4/aws4.js
@ -0,0 +1,373 @@
+var aws4 = exports,
+    url = require('url'),
+    querystring = require('querystring'),
+    crypto = require('crypto'),
+    lru = require('./lru'),
+    credentialsCache = lru(1000)
+
+// http://docs.amazonwebservices.com/general/latest/gr/signature-version-4.html
+
+function hmac(key, string, encoding) {
+  return crypto.createHmac('sha256', key).update(string, 'utf8').digest(encoding)
+}
+
+function hash(string, encoding) {
+  return crypto.createHash('sha256').update(string, 'utf8').digest(encoding)
+}
+
+// This function assumes the string has already been percent encoded
+function encodeRfc3986(urlEncodedString) {
+  return urlEncodedString.replace(/[!'()*]/g, function(c) {
+    return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+  })
+}
+
+function encodeRfc3986Full(str) {
+  return encodeRfc3986(encodeURIComponent(str))
+}
+
+// A bit of a combination of:
+// https://github.com/aws/aws-sdk-java-v2/blob/dc695de6ab49ad03934e1b02e7263abbd2354be0/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAws4Signer.java#L59
+// https://github.com/aws/aws-sdk-js/blob/18cb7e5b463b46239f9fdd4a65e2ff8c81831e8f/lib/signers/v4.js#L191-L199
+// https://github.com/mhart/aws4fetch/blob/b3aed16b6f17384cf36ea33bcba3c1e9f3bdfefd/src/main.js#L25-L34
+var HEADERS_TO_IGNORE = {
+  'authorization': true,
+  'connection': true,
+  'x-amzn-trace-id': true,
+  'user-agent': true,
+  'expect': true,
+  'presigned-expires': true,
+  'range': true,
+}
+
+// request: { path | body, [host], [method], [headers], [service], [region] }
+// credentials: { accessKeyId, secretAccessKey, [sessionToken] }
+function RequestSigner(request, credentials) {
+
+  if (typeof request === 'string') request = url.parse(request)
+
+  var headers = request.headers = (request.headers || {}),
+      hostParts = (!this.service || !this.region) && this.matchHost(request.hostname || request.host || headers.Host || headers.host)
+
+  this.request = request
+  this.credentials = credentials || this.defaultCredentials()
+
+  this.service = request.service || hostParts[0] || ''
+  this.region = request.region || hostParts[1] || 'us-east-1'
+
+  // SES uses a different domain from the service name
+  if (this.service === 'email') this.service = 'ses'
+
+  if (!request.method && request.body)
+    request.method = 'POST'
+
+  if (!headers.Host && !headers.host) {
+    headers.Host = request.hostname || request.host || this.createHost()
+
+    // If a port is specified explicitly, use it as is
+    if (request.port)
+      headers.Host += ':' + request.port
+  }
+  if (!request.hostname && !request.host)
+    request.hostname = headers.Host || headers.host
+
+  this.isCodeCommitGit = this.service === 'codecommit' && request.method === 'GIT'
+}
+
+RequestSigner.prototype.matchHost = function(host) {
+  var match = (host || '').match(/([^\.]+)\.(?:([^\.]*)\.)?amazonaws\.com(\.cn)?$/)
+  var hostParts = (match || []).slice(1, 3)
+
+  // ES's hostParts are sometimes the other way round, if the value that is expected
+  // to be region equals ‘es’ switch them back
+  // e.g. search-cluster-name-aaaa00aaaa0aaa0aaaaaaa0aaa.us-east-1.es.amazonaws.com
+  if (hostParts[1] === 'es')
+    hostParts = hostParts.reverse()
+
+  if (hostParts[1] == 's3') {
+    hostParts[0] = 's3'
+    hostParts[1] = 'us-east-1'
+  } else {
+    for (var i = 0; i < 2; i++) {
+      if (/^s3-/.test(hostParts[i])) {
+        hostParts[1] = hostParts[i].slice(3)
+        hostParts[0] = 's3'
+        break
+      }
+    }
+  }
+
+  return hostParts
+}
+
+// http://docs.aws.amazon.com/general/latest/gr/rande.html
+RequestSigner.prototype.isSingleRegion = function() {
+  // Special case for S3 and SimpleDB in us-east-1
+  if (['s3', 'sdb'].indexOf(this.service) >= 0 && this.region === 'us-east-1') return true
+
+  return ['cloudfront', 'ls', 'route53', 'iam', 'importexport', 'sts']
+    .indexOf(this.service) >= 0
+}
+
+RequestSigner.prototype.createHost = function() {
+  var region = this.isSingleRegion() ? '' : '.' + this.region,
+      subdomain = this.service === 'ses' ? 'email' : this.service
+  return subdomain + region + '.amazonaws.com'
+}
+
+RequestSigner.prototype.prepareRequest = function() {
+  this.parsePath()
+
+  var request = this.request, headers = request.headers, query
+
+  if (request.signQuery) {
+
+    this.parsedPath.query = query = this.parsedPath.query || {}
+
+    if (this.credentials.sessionToken)
+      query['X-Amz-Security-Token'] = this.credentials.sessionToken
+
+    if (this.service === 's3' && !query['X-Amz-Expires'])
+      query['X-Amz-Expires'] = 86400
+
+    if (query['X-Amz-Date'])
+      this.datetime = query['X-Amz-Date']
+    else
+      query['X-Amz-Date'] = this.getDateTime()
+
+    query['X-Amz-Algorithm'] = 'AWS4-HMAC-SHA256'
+    query['X-Amz-Credential'] = this.credentials.accessKeyId + '/' + this.credentialString()
+    query['X-Amz-SignedHeaders'] = this.signedHeaders()
+
+  } else {
+
+    if (!request.doNotModifyHeaders && !this.isCodeCommitGit) {
+      if (request.body && !headers['Content-Type'] && !headers['content-type'])
+        headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=utf-8'
+
+      if (request.body && !headers['Content-Length'] && !headers['content-length'])
+        headers['Content-Length'] = Buffer.byteLength(request.body)
+
+      if (this.credentials.sessionToken && !headers['X-Amz-Security-Token'] && !headers['x-amz-security-token'])
+        headers['X-Amz-Security-Token'] = this.credentials.sessionToken
+
+      if (this.service === 's3' && !headers['X-Amz-Content-Sha256'] && !headers['x-amz-content-sha256'])
+        headers['X-Amz-Content-Sha256'] = hash(this.request.body || '', 'hex')
+
+      if (headers['X-Amz-Date'] || headers['x-amz-date'])
+        this.datetime = headers['X-Amz-Date'] || headers['x-amz-date']
+      else
+        headers['X-Amz-Date'] = this.getDateTime()
+    }
+
+    delete headers.Authorization
+    delete headers.authorization
+  }
+}
+
+RequestSigner.prototype.sign = function() {
+  if (!this.parsedPath) this.prepareRequest()
+
+  if (this.request.signQuery) {
+    this.parsedPath.query['X-Amz-Signature'] = this.signature()
+  } else {
+    this.request.headers.Authorization = this.authHeader()
+  }
+
+  this.request.path = this.formatPath()
+
+  return this.request
+}
+
+RequestSigner.prototype.getDateTime = function() {
+  if (!this.datetime) {
+    var headers = this.request.headers,
+      date = new Date(headers.Date || headers.date || new Date)
+
+    this.datetime = date.toISOString().replace(/[:\-]|\.\d{3}/g, '')
+
+    // Remove the trailing 'Z' on the timestamp string for CodeCommit git access
+    if (this.isCodeCommitGit) this.datetime = this.datetime.slice(0, -1)
+  }
+  return this.datetime
+}
+
+RequestSigner.prototype.getDate = function() {
+  return this.getDateTime().substr(0, 8)
+}
+
+RequestSigner.prototype.authHeader = function() {
+  return [
+    'AWS4-HMAC-SHA256 Credential=' + this.credentials.accessKeyId + '/' + this.credentialString(),
+    'SignedHeaders=' + this.signedHeaders(),
+    'Signature=' + this.signature(),
+  ].join(', ')
+}
+
+RequestSigner.prototype.signature = function() {
+  var date = this.getDate(),
+      cacheKey = [this.credentials.secretAccessKey, date, this.region, this.service].join(),
+      kDate, kRegion, kService, kCredentials = credentialsCache.get(cacheKey)
+  if (!kCredentials) {
+    kDate = hmac('AWS4' + this.credentials.secretAccessKey, date)
+    kRegion = hmac(kDate, this.region)
+    kService = hmac(kRegion, this.service)
+    kCredentials = hmac(kService, 'aws4_request')
+    credentialsCache.set(cacheKey, kCredentials)
+  }
+  return hmac(kCredentials, this.stringToSign(), 'hex')
+}
+
+RequestSigner.prototype.stringToSign = function() {
+  return [
+    'AWS4-HMAC-SHA256',
+    this.getDateTime(),
+    this.credentialString(),
+    hash(this.canonicalString(), 'hex'),
+  ].join('\n')
+}
+
+RequestSigner.prototype.canonicalString = function() {
+  if (!this.parsedPath) this.prepareRequest()
+
+  var pathStr = this.parsedPath.path,
+      query = this.parsedPath.query,
+      headers = this.request.headers,
+      queryStr = '',
+      normalizePath = this.service !== 's3',
+      decodePath = this.service === 's3' || this.request.doNotEncodePath,
+      decodeSlashesInPath = this.service === 's3',
+      firstValOnly = this.service === 's3',
+      bodyHash
+
+  if (this.service === 's3' && this.request.signQuery) {
+    bodyHash = 'UNSIGNED-PAYLOAD'
+  } else if (this.isCodeCommitGit) {
+    bodyHash = ''
+  } else {
+    bodyHash = headers['X-Amz-Content-Sha256'] || headers['x-amz-content-sha256'] ||
+      hash(this.request.body || '', 'hex')
+  }
+
+  if (query) {
+    var reducedQuery = Object.keys(query).reduce(function(obj, key) {
+      if (!key) return obj
+      obj[encodeRfc3986Full(key)] = !Array.isArray(query[key]) ? query[key] :
+        (firstValOnly ? query[key][0] : query[key])
+      return obj
+    }, {})
+    var encodedQueryPieces = []
+    Object.keys(reducedQuery).sort().forEach(function(key) {
+      if (!Array.isArray(reducedQuery[key])) {
+        encodedQueryPieces.push(key + '=' + encodeRfc3986Full(reducedQuery[key]))
+      } else {
+        reducedQuery[key].map(encodeRfc3986Full).sort()
+          .forEach(function(val) { encodedQueryPieces.push(key + '=' + val) })
+      }
+    })
+    queryStr = encodedQueryPieces.join('&')
+  }
+  if (pathStr !== '/') {
+    if (normalizePath) pathStr = pathStr.replace(/\/{2,}/g, '/')
+    pathStr = pathStr.split('/').reduce(function(path, piece) {
+      if (normalizePath && piece === '..') {
+        path.pop()
+      } else if (!normalizePath || piece !== '.') {
+        if (decodePath) piece = decodeURIComponent(piece.replace(/\+/g, ' '))
+        path.push(encodeRfc3986Full(piece))
+      }
+      return path
+    }, []).join('/')
+    if (pathStr[0] !== '/') pathStr = '/' + pathStr
+    if (decodeSlashesInPath) pathStr = pathStr.replace(/%2F/g, '/')
+  }
+
+  return [
+    this.request.method || 'GET',
+    pathStr,
+    queryStr,
+    this.canonicalHeaders() + '\n',
+    this.signedHeaders(),
+    bodyHash,
+  ].join('\n')
+}
+
+RequestSigner.prototype.canonicalHeaders = function() {
+  var headers = this.request.headers
+  function trimAll(header) {
+    return header.toString().trim().replace(/\s+/g, ' ')
+  }
+  return Object.keys(headers)
+    .filter(function(key) { return HEADERS_TO_IGNORE[key.toLowerCase()] == null })
+    .sort(function(a, b) { return a.toLowerCase() < b.toLowerCase() ? -1 : 1 })
+    .map(function(key) { return key.toLowerCase() + ':' + trimAll(headers[key]) })
+    .join('\n')
+}
+
+RequestSigner.prototype.signedHeaders = function() {
+  return Object.keys(this.request.headers)
+    .map(function(key) { return key.toLowerCase() })
+    .filter(function(key) { return HEADERS_TO_IGNORE[key] == null })
+    .sort()
+    .join(';')
+}
+
+RequestSigner.prototype.credentialString = function() {
+  return [
+    this.getDate(),
+    this.region,
+    this.service,
+    'aws4_request',
+  ].join('/')
+}
+
+RequestSigner.prototype.defaultCredentials = function() {
+  var env = process.env
+  return {
+    accessKeyId: env.AWS_ACCESS_KEY_ID || env.AWS_ACCESS_KEY,
+    secretAccessKey: env.AWS_SECRET_ACCESS_KEY || env.AWS_SECRET_KEY,
+    sessionToken: env.AWS_SESSION_TOKEN,
+  }
+}
+
+RequestSigner.prototype.parsePath = function() {
+  var path = this.request.path || '/'
+
+  // S3 doesn't always encode characters > 127 correctly and
+  // all services don't encode characters > 255 correctly
+  // So if there are non-reserved chars (and it's not already all % encoded), just encode them all
+  if (/[^0-9A-Za-z;,/?:@&=+$\-_.!~*'()#%]/.test(path)) {
+    path = encodeURI(decodeURI(path))
+  }
+
+  var queryIx = path.indexOf('?'),
+      query = null
+
+  if (queryIx >= 0) {
+    query = querystring.parse(path.slice(queryIx + 1))
+    path = path.slice(0, queryIx)
+  }
+
+  this.parsedPath = {
+    path: path,
+    query: query,
+  }
+}
+
+RequestSigner.prototype.formatPath = function() {
+  var path = this.parsedPath.path,
+      query = this.parsedPath.query
+
+  if (!query) return path
+
+  // Services don't support empty query string keys
+  if (query[''] != null) delete query['']
+
+  return path + '?' + encodeRfc3986(querystring.stringify(query))
+}
+
+aws4.RequestSigner = RequestSigner
+
+aws4.sign = function(request, credentials) {
+  return new RequestSigner(request, credentials).sign()
+}
--- a/node_modules/aws4/lru.js
+++ b/node_modules/aws4/lru.js
@ -0,0 +1,96 @@
+module.exports = function(size) {
+  return new LruCache(size)
+}
+
+function LruCache(size) {
+  this.capacity = size | 0
+  this.map = Object.create(null)
+  this.list = new DoublyLinkedList()
+}
+
+LruCache.prototype.get = function(key) {
+  var node = this.map[key]
+  if (node == null) return undefined
+  this.used(node)
+  return node.val
+}
+
+LruCache.prototype.set = function(key, val) {
+  var node = this.map[key]
+  if (node != null) {
+    node.val = val
+  } else {
+    if (!this.capacity) this.prune()
+    if (!this.capacity) return false
+    node = new DoublyLinkedNode(key, val)
+    this.map[key] = node
+    this.capacity--
+  }
+  this.used(node)
+  return true
+}
+
+LruCache.prototype.used = function(node) {
+  this.list.moveToFront(node)
+}
+
+LruCache.prototype.prune = function() {
+  var node = this.list.pop()
+  if (node != null) {
+    delete this.map[node.key]
+    this.capacity++
+  }
+}
+
+
+function DoublyLinkedList() {
+  this.firstNode = null
+  this.lastNode = null
+}
+
+DoublyLinkedList.prototype.moveToFront = function(node) {
+  if (this.firstNode == node) return
+
+  this.remove(node)
+
+  if (this.firstNode == null) {
+    this.firstNode = node
+    this.lastNode = node
+    node.prev = null
+    node.next = null
+  } else {
+    node.prev = null
+    node.next = this.firstNode
+    node.next.prev = node
+    this.firstNode = node
+  }
+}
+
+DoublyLinkedList.prototype.pop = function() {
+  var lastNode = this.lastNode
+  if (lastNode != null) {
+    this.remove(lastNode)
+  }
+  return lastNode
+}
+
+DoublyLinkedList.prototype.remove = function(node) {
+  if (this.firstNode == node) {
+    this.firstNode = node.next
+  } else if (node.prev != null) {
+    node.prev.next = node.next
+  }
+  if (this.lastNode == node) {
+    this.lastNode = node.prev
+  } else if (node.next != null) {
+    node.next.prev = node.prev
+  }
+}
+
+
+function DoublyLinkedNode(key, val) {
+  this.key = key
+  this.val = val
+  this.prev = null
+  this.next = null
+}
--- a/node_modules/aws4/package.json
+++ b/node_modules/aws4/package.json
@ -0,0 +1,17 @@
+{
+  "name": "aws4",
+  "version": "1.11.0",
+  "description": "Signs and prepares requests using AWS Signature Version 4",
+  "author": "Michael Hart <michael.hart.au@gmail.com> (https://github.com/mhart)",
+  "license": "MIT",
+  "repository": "github:mhart/aws4",
+  "main": "aws4.js",
+  "scripts": {
+    "test": "mocha ./test/fast.js -R list",
+    "integration": "node ./test/slow.js"
+  },
+  "devDependencies": {
+    "mocha": "^2.5.3",
+    "should": "^8.4.0"
+  }
+}