Build: Add SRI support

Closes gh-22

Author: jmervine

Gruntfile.js

@@ -6,13 +6,26 @@ var _ = require( "underscore" ),
 	http = require( "http" );
 
 grunt.loadNpmTasks( "grunt-jquery-content" );
+grunt.loadNpmTasks( "grunt-sri" );
 
 grunt.initConfig({
 	wordpress: (function() {
 		var config = require( "./config" );
 		config.dir = "dist/wordpress";
 		return config;
-	})()
+	})(),
+	sri: {
+		generate: {
+			src: [
+				"cdn/**/*.js",
+				"cdn/**/*.css"
+			],
+			options: {
+				algorithms: [ "sha256" ],
+				dest: "dist/resources/sri-directives.json"
+			}
+		}
+	}
 });
 
 grunt.registerTask( "build-index", function() {
@@ -265,15 +278,19 @@ grunt.registerTask( "build-index", function() {
 		};
 	}
 
-	Handlebars.registerHelper( "release", function( prefix, release ) {
-		var html = prefix + " " + release.version + " - " +
-			"<a href='/" + release.filename + "'>uncompressed</a>";
+	var sriHashes = require( "./dist/resources/sri-directives.json" );
+	function href( file, label ) {
+		var sri = "sha256-" + sriHashes[ "@cdn/" + file ][ "hashes" ][ "sha256" ];
+		return "<a class='open-sri-modal' href='/" + file + "' data-hash='" + sri + "'>" + label + "</a>";
+	}
 
+	Handlebars.registerHelper( "release", function( prefix, release ) {
+		var html = prefix + " " + release.version + " - " + href( release.filename, "uncompressed" );
 		if ( release.minified ) {
-			html += ", <a href='/" + release.minified + "'>minified</a>";
+			html += ", " + href( release.minified, "minified" );
 		}
 		if ( release.packed ) {
-			html += ", <a href='/" + release.packed + "'>packed</a>";
+			html += ", " + href( release.packed, "packed" );
 		}
 
 		return new Handlebars.SafeString( html );
@@ -360,7 +377,12 @@ grunt.registerTask( "reload-listings", function() {
 	});
 });
 
-grunt.registerTask( "build", [ "build-index" ] );
+grunt.registerTask( "ensure-dist-resources", function() {
+	grunt.file.mkdir( "dist/resources" );
+});
+
+grunt.registerTask( "sri-generate", [ "ensure-dist-resources", "sri:generate" ] );
+grunt.registerTask( "build", [ "sri-generate", "build-index" ] );
 grunt.registerTask( "deploy", [ "wordpress-deploy", "reload-listings" ] );
 
 };

package.json

@@ -22,6 +22,7 @@
   "dependencies": {
     "grunt": "0.4.5",
     "grunt-jquery-content": "3.0.0",
+    "grunt-sri": "0.0.5",
     "semver": "2.0.11",
     "underscore": "1.5.1",
     "handlebars": "1.0.12"