feat: adds support for AWS/EC2

.gitignore

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+.DS_Store
+node_modules
+.nyc_output

.travis.yml

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+language: node_js
+
+os:
+  - linux
+
+after_success: npm run coverage
+
+node_js:
+  - "0.10"
+  - "4"
+  - "node"

LICENSE.txt

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+Copyright (c) 2016, Contributors
+
+Permission to use, copy, modify, and/or distribute this software
+for any purpose with or without fee is hereby granted, provided
+that the above copyright notice and this permission notice
+appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE
+LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
+OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

README.md

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+# which-cloud
+
+[![Build Status](https://travis-ci.org/bcoe/gce-ips.svg)](https://travis-ci.org/bcoe/gce-ips)
+[![Coverage Status](https://coveralls.io/repos/github/bcoe/which-cloud/badge.svg?branch=master)](https://coveralls.io/github/bcoe/which-cloud?branch=master)
+[![Standard Version](https://img.shields.io/badge/release-standard%20version-brightgreen.svg)](https://github.com/conventional-changelog/standard-version)
+
+given an IP address, return which cloud provider it belongs to (EC2, GCE, etc)
+
+```sh
+> which-cloud 104.196.27.39
+> gce
+```
+
+## Installing
+
+```sh
+npm i which-cloud -g
+```
+
+## Supported Clouds
+
+* Amazon Web Services (aws).
+* Google Compute Engine (gce).
+* Azure (azure)
+
+## License
+
+ISC

lib/aws.js

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+const assign = require('lodash.assign')
+const request = require('request')
+
+function AWS (opts) {
+  assign(this, {
+    rangesURL: 'https://ip-ranges.amazonaws.com/ip-ranges.json',
+    name: 'aws'
+  }, opts)
+}
+
+AWS.prototype.list = function (cb) {
+  request.get({
+    url: this.rangesURL,
+    json: true
+  }, function (err, res, obj) {
+    if (res && res.statusCode >= 400) {
+      err = Error('unexpected status = ' + res.statusCode)
+      err.statusCode = res.statusCode
+    }
+    if (err) return cb(err)
+    else {
+      return cb(null, obj.prefixes.map(
+        function (p) {
+          return p.ip_prefix
+        }
+      ))
+    }
+  })
+}
+
+module.exports = function (opts) {
+  return new AWS(opts)
+}

package.json

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+{
+  "name": "which-cloud",
+  "version": "1.0.0",
+  "description": "given an IP address, return which cloud provider it belongs to (EC2, GCE, etc)",
+  "main": "index.js",
+  "global": true,
+  "scripts": {
+    "pretest": "standard",
+    "test": "nyc mocha test/*.js",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "release": "standard-version"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/bcoe/which-cloud.git"
+  },
+  "keywords": [
+    "cloud",
+    "lookup",
+    "ip"
+  ],
+  "author": "Ben Coe <ben@npmjs.com>",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/bcoe/which-cloud/issues"
+  },
+  "homepage": "https://github.com/bcoe/which-cloud#readme",
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "coveralls": "^2.11.9",
+    "mocha": "^2.5.3",
+    "nock": "^8.0.0",
+    "nyc": "^6.4.4",
+    "standard": "^7.1.1",
+    "standard-version": "^2.3.0"
+  },
+  "dependencies": {
+    "async": "^1.5.2",
+    "ip-range-check": "0.0.1",
+    "lodash.assign": "^4.0.9",
+    "request": "^2.72.0",
+    "yargs": "^4.7.1"
+  }
+}

test/aws.js

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+/* global describe, it */
+
+require('chai').should()
+
+var AWS = require('../lib/aws')
+var nock = require('nock')
+
+describe('AWS', function () {
+  it('returns a list of IP ranges for the AWS service', function (done) {
+    var aws = AWS()
+    aws.list(function (err, ranges) {
+      if (err) return done(err)
+      ranges.should.include('23.20.0.0/14')
+      return done()
+    })
+  })
+
+  it('handles an upstream error', function (done) {
+    var aws = AWS()
+    var getRanges = nock('https://ip-ranges.amazonaws.com')
+      .get('/ip-ranges.json')
+      .reply(500)
+    aws.list(function (err, ranges) {
+      getRanges.done()
+      err.statusCode.should.equal(500)
+      return done()
+    })
+  })
+})