From 078948784115825fffcb68995f0bd95958257cd7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Pelletier?= <francois@jevalide.ca>
Date: Sat, 31 Aug 2024 23:27:03 -0400
Subject: [PATCH] Ajout CORS

---
 app/Filters.scala                    |  6 +++++
 app/actions/CORSAction.scala         | 34 ++++++++++++++++++++++++++++
 app/controllers/HomeController.scala | 21 ++++++-----------
 build.sbt                            |  6 ++++-
 conf/application.conf                | 13 +++++++++++
 5 files changed, 65 insertions(+), 15 deletions(-)
 create mode 100644 app/Filters.scala
 create mode 100644 app/actions/CORSAction.scala

diff --git a/app/Filters.scala b/app/Filters.scala
new file mode 100644
index 0000000..3603224
--- /dev/null
+++ b/app/Filters.scala
@@ -0,0 +1,6 @@
+import javax.inject.Inject
+import play.api.http.DefaultHttpFilters
+import play.filters.cors.CORSFilter
+
+class Filters @Inject() (corsFilter: CORSFilter)
+  extends DefaultHttpFilters(corsFilter)
diff --git a/app/actions/CORSAction.scala b/app/actions/CORSAction.scala
new file mode 100644
index 0000000..05fc344
--- /dev/null
+++ b/app/actions/CORSAction.scala
@@ -0,0 +1,34 @@
+package actions
+
+import javax.inject.Inject
+import play.api.mvc._
+import play.api.http.HttpErrorHandler
+import play.filters.cors.{CORSActionBuilder, CORSConfig}
+import scala.concurrent.{ExecutionContext, Future}
+import org.apache.pekko.stream.Materializer
+
+class CORSAction @Inject() (
+    parser: BodyParsers.Default,
+    corsConfig: CORSConfig,
+    errorHandler: HttpErrorHandler,
+    val controllerComponents: ControllerComponents
+)(implicit ec: ExecutionContext, mat: Materializer)
+  extends CORSActionBuilder
+  with BaseController {
+
+  override protected def corsConfig: CORSConfig = corsConfig
+  override protected def errorHandler: HttpErrorHandler = errorHandler
+  override protected def mat: Materializer = mat
+
+  override def parser: BodyParser[AnyContent] = parser
+  override def executionContext: ExecutionContext = ec
+
+  override def invokeBlock[A](request: Request[A], block: Request[A] => Future[Result]): Future[Result] = {
+    block(request).map(_.withHeaders(
+      "Access-Control-Allow-Origin" -> "*",
+      "Access-Control-Allow-Methods" -> "GET, POST, OPTIONS",
+      "Access-Control-Allow-Headers" -> "Origin, Content-Type, Accept, Authorization",
+      "Access-Control-Allow-Credentials" -> "true"
+    ))
+  }
+}
diff --git a/app/controllers/HomeController.scala b/app/controllers/HomeController.scala
index 58c5a34..aaae472 100644
--- a/app/controllers/HomeController.scala
+++ b/app/controllers/HomeController.scala
@@ -1,24 +1,17 @@
 package controllers
 
 import play.api.mvc._
+import actions.CORSAction
 
 import javax.inject._
 
-/**
- * This controller creates an `Action` to handle HTTP requests to the
- * application's home page.
- */
 @Singleton
-class HomeController @Inject()(val controllerComponents: ControllerComponents) extends BaseController {
+class HomeController @Inject()(
+  val controllerComponents: ControllerComponents,
+  corsAction: CORSAction
+) extends BaseController {
 
-  /**
-   * Create an Action to render an HTML page.
-   *
-   * The configuration in the `routes` file means that this method
-   * will be called when the application receives a `GET` request with
-   * a path of `/`.
-   */
-  def index(): Action[AnyContent] = Action { implicit request: Request[AnyContent] =>
+  def index(): Action[AnyContent] = corsAction { implicit request =>
     Ok(views.html.index())
   }
-}
\ No newline at end of file
+}
diff --git a/build.sbt b/build.sbt
index 8b88627..e40005d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -6,9 +6,13 @@ lazy val root = (project in file(".")).enablePlugins(PlayScala)
 
 scalaVersion := "2.13.14"
 
-libraryDependencies += guice
+libraryDependencies ++= Seq(
+  guice,
+  filters
+)
 libraryDependencies += "org.scalatestplus.play" %% "scalatestplus-play" % "7.0.0" % Test
 
+
 // Adds additional packages into Twirl
 //TwirlKeys.templateImports += "com.example.controllers._"
 
diff --git a/conf/application.conf b/conf/application.conf
index 3c1ffc6..83484a5 100644
--- a/conf/application.conf
+++ b/conf/application.conf
@@ -1,3 +1,16 @@
 play.filters.hosts {
   allowed = ["."]
 }
+
+play.filters.enabled += play.filters.headers.SecurityHeadersFilter
+
+play.filters.headers {
+  contentSecurityPolicy = "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; frame-ancestors 'self' https://jevalide.ca"
+}
+
+play.filters.enabled += "play.filters.cors.CORSFilter"
+play.filters.cors {
+  allowedOrigins = null  // Allow all origins
+  allowedHttpMethods = ["GET", "POST", "PUT", "DELETE", "OPTIONS"]
+  allowedHttpHeaders = ["Accept", "Content-Type"]
+}