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HSTS.scala
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HSTS.scala
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/*
* Copyright 2014 http4s.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.http4s
package server
package middleware
import cats.Functor
import cats.data.Kleisli
import org.http4s.headers.`Strict-Transport-Security`
import scala.concurrent.duration._
/** [[Middleware]] to add HTTP Strict Transport Security (HSTS) support adding
* the Strict Transport Security headers
*/
object HSTS {
// Default HSTS policy of waiting for 1 year and include sub domains
private val defaultHSTSPolicy = `Strict-Transport-Security`.unsafeFromDuration(
365.days,
includeSubDomains = true,
preload = false,
)
def apply[F[_]: Functor, A, G[_]](
routes: Kleisli[F, A, Response[G]]
): Kleisli[F, A, Response[G]] =
apply(routes, defaultHSTSPolicy)
def apply[F[_]: Functor, A, G[_]](
http: Kleisli[F, A, Response[G]],
header: `Strict-Transport-Security`,
): Kleisli[F, A, Response[G]] =
Kleisli { req =>
http.map(_.putHeaders(header)).apply(req)
}
def unsafeFromDuration[F[_]: Functor, A, G[_]](
http: Kleisli[F, A, Response[G]],
maxAge: FiniteDuration = 365.days,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): Kleisli[F, A, Response[G]] = {
val header = `Strict-Transport-Security`.unsafeFromDuration(maxAge, includeSubDomains, preload)
apply(http, header)
}
object httpRoutes {
def apply[F[_]: Functor](httpRoutes: HttpRoutes[F]): HttpRoutes[F] =
HSTS.apply(httpRoutes)
def apply[F[_]: Functor](
httpRoutes: HttpRoutes[F],
header: `Strict-Transport-Security`,
): HttpRoutes[F] =
HSTS.apply(httpRoutes, header)
def unsafeFromDuration[F[_]: Functor](
httpRoutes: HttpRoutes[F],
maxAge: FiniteDuration = 365.days,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): HttpRoutes[F] =
HSTS.unsafeFromDuration(httpRoutes, maxAge, includeSubDomains, preload)
}
object httpApp {
def apply[F[_]: Functor](httpApp: HttpApp[F]): HttpApp[F] =
HSTS.apply(httpApp)
def apply[F[_]: Functor](httpApp: HttpApp[F], header: `Strict-Transport-Security`): HttpApp[F] =
HSTS.apply(httpApp, header)
def unsafeFromDuration[F[_]: Functor](
httpApp: HttpApp[F],
maxAge: FiniteDuration = 365.days,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): HttpApp[F] =
HSTS.unsafeFromDuration(httpApp, maxAge, includeSubDomains, preload)
}
}