initial commit

.gitignore

@@ -1 +1,3 @@
 node_modules
+.idea
+.grunt

Gruntfile.js

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+module.exports = function (grunt) {
+
+    grunt.initConfig({
+        jshint: {
+            files: [
+                "Gruntfile.js",
+                "index.js",
+                "test/**/*.js"
+            ]
+        },
+        mochaTest: {
+            files: [ 'test/**/*.js' ]
+        },
+        mochaTestConfig: {
+            options: {
+                reporter: 'spec',
+                ui: 'tdd'
+            }
+        }
+    });
+
+    grunt.loadNpmTasks("grunt-contrib-jshint");
+    grunt.loadNpmTasks('grunt-mocha-test');
+
+    grunt.registerTask("default", ["jshint", "mochaTest"]);
+
+};

index.js

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+var os = require('os');
+
+var currentAddress = function() {
+    var networkInterfaces = os.networkInterfaces( );
+    for (var networkInterface in networkInterfaces) {
+        var iface = networkInterfaces[networkInterface];
+
+        for (var i = 0; i < iface.length; i++) {
+            var name = iface[i];
+            if (name.address !== '127.0.0.1' && name.family === 'IPv4' && !name.internal) {
+                return "http://" + name.address;
+            }
+        }
+    }
+};
+
+module.exports = {
+    currentAddress: currentAddress
+};

package.json

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+{
+  "name": "puresec-microservice-js",
+  "version": "0.1.0",
+  "description": "microservice utilities for the puresec eco system",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://fhopeman@github.com/fhopeman/puresec-microservice-js.git"
+  },
+  "author": "Fabian Hoffmann",
+  "bugs": {
+    "url": "https://github.com/fhopeman/puresec-microservice-js/issues"
+  },
+  "homepage": "https://github.com/fhopeman/puresec-microservice-js#readme",
+  "devDependencies": {
+    "grunt": "~0.4.5",
+    "grunt-cli": "^0.1.13",
+    "grunt-contrib-jshint": "~0.11.1",
+    "grunt-mocha-test": "^0.12.7",
+    "mocha": "^2.2.4",
+    "sinon": "^1.14.1"
+  }
+}

test/index.js

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+var testee = require('../index');
+
+var assert = require("assert");
+var sinon = require("sinon");
+var os = require("os");
+
+describe("microservice utils", function(){
+
+    afterEach(function () {
+        os.networkInterfaces.restore();
+    });
+
+    it("should return current external IPv4 address", function(){
+        sinon.stub(os, 'networkInterfaces').returns(
+            {lo: [
+                {address: '127.0.0.1', family: 'IPv4', internal: true },
+                {address: '::1', family: 'IPv6', internal: true }
+            ],
+             wlan0: [
+                 {address: '192.168.0.7', family: 'IPv4', internal: false },
+                 {address: 'someFancyAddress0', family: 'IPv6', internal: false },
+                 {address: 'someFancyAddress2', family: 'IPv6', internal: false }
+             ]}
+        );
+
+        assert.equal(testee.currentAddress(), "http://192.168.0.7");
+    });
+
+    it("shouldn't return network address if no external IPv4 is available", function(){
+        sinon.stub(os, 'networkInterfaces').returns(
+            {lo: [
+                {address: '127.0.0.1', family: 'IPv4', internal: true },
+                {address: '::1', family: 'IPv6', internal: true }
+            ],
+            wlan0: [{address: 'someFancyAddress0', family: 'IPv6', internal: false },
+                    {address: 'someFancyAddress2', family: 'IPv6', internal: false }
+            ]}
+        );
+
+        assert.equal(testee.currentAddress(), undefined);
+    });
+
+});