Add basic DBStrategy

build.sbt

@@ -49,6 +49,7 @@ lazy val server = project.in(file("server")) settings(
     "com.lihaoyi" %% "upickle" % upickleVersion,
     "com.lihaoyi" %% "scalatags" % scalatagsVersion,
     "org.scalatra" %% "scalatra" % scalatraVersion,
+    "org.scalatra" %% "scalatra-auth" % scalatraVersion,
     "ch.qos.logback" % "logback-classic" % "1.1.3" % "runtime",
     "javax.servlet" % "javax.servlet-api" % "3.1.0" % "provided",
     "org.eclipse.jetty" % "jetty-webapp" % jettyVersion,

server/src/main/scala/server/DBStrategy.scala

+package server
+
+import javax.servlet.http.{HttpServletRequest, HttpServletResponse}
+
+import org.openmole.gate.server.Data.User
+import org.scalatra.auth.strategy.{BasicAuthStrategy}
+import org.scalatra.ScalatraBase
+
+class DBStrategy(protected override val app: ScalatraBase, realm: String) extends BasicAuthStrategy[User](app, realm) {
+
+  override protected def getUserId(user: User)(implicit request: HttpServletRequest, response: HttpServletResponse): String = user.login
+
+  override protected def validate(userName: String, password: String)(implicit request: HttpServletRequest, response: HttpServletResponse): Option[User] = {
+
+    //Check whether user is in DB
+
+    //stub
+    if (userName == "scalatra" && password == "scalatra") Some(User(userName))
+    else None
+  }
+
+}
\ No newline at end of file

server/src/main/scala/server/Servlet.scala

 package org.openmole.gate.server
 
 import org.scalatra._
+import org.scalatra.auth.{ScentryConfig, ScentrySupport}
+import org.scalatra.auth.strategy.BasicAuthSupport
+import server.DBStrategy
+
 import scala.concurrent.duration._
 import scala.concurrent.Await
 import scalatags.Text.all._
@@ -13,13 +17,12 @@ object AutowireServer extends autowire.Server[String, upickle.default.Reader, up
   def write[Result: upickle.default.Writer](r: Result) = upickle.default.write(r)
 }
 
-class Servlet extends ScalatraServlet {
+class Servlet extends ScalatraServlet with AuthenticationSupport {
 
   val basePath = "shared"
-
+  
   get("/") {
     contentType = "text/html"
-
     tags.html(
       tags.head(
         tags.meta(tags.httpEquiv := "Content-Type", tags.content := "text/html; charset=UTF-8"),
@@ -27,6 +30,7 @@ class Servlet extends ScalatraServlet {
         tags.script(tags.`type` := "text/javascript", tags.src := "js/gate.js")
       ),
       tags.body(
+        div("authenticated: " + basicAuth),
         script("client.Gate.run();")
       )
     )
@@ -40,3 +44,37 @@ class Servlet extends ScalatraServlet {
   }
 
 }
+
+object Data {
+  type Login = String
+  type Password = String
+
+  case class User(login: Login)
+}
+
+trait AuthenticationSupport extends ScentrySupport[Data.User] with BasicAuthSupport[Data.User] {
+  this: Servlet ⇒
+
+  val realm = "Gate authentication"
+
+  protected def fromSession = {
+    case id: String ⇒ Data.User(id)
+  }
+
+  protected def toSession = {
+    case usr: Data.User ⇒ usr.login
+  }
+
+  protected val scentryConfig = (new ScentryConfig {}).asInstanceOf[ScentryConfiguration]
+
+  override protected def configureScentry = {
+    scentry.unauthenticated {
+      scentry.strategies("DB").unauthenticated()
+    }
+  }
+
+  override protected def registerAuthStrategies = {
+    scentry.register("DB", app ⇒ new DBStrategy(app, realm))
+  }
+
+}