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Strict-Transport-Security.scala
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Strict-Transport-Security.scala
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/*
* Copyright 2013 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 headers
import cats.parse.Parser
import cats.parse.Parser0
import org.http4s.internal.parsing.CommonRules.ows
import org.http4s.parser.AdditionalRules
import org.http4s.util.Renderable
import org.http4s.util.Writer
import org.typelevel.ci._
import scala.concurrent.duration.FiniteDuration
/** Defined by https://datatracker.ietf.org/doc/html/rfc6797
*/
object `Strict-Transport-Security` {
private[headers] class StrictTransportSecurityImpl(
maxAge: Long,
includeSubDomains: Boolean,
preload: Boolean,
) extends `Strict-Transport-Security`(maxAge, includeSubDomains, preload)
def fromLong(
maxAge: Long,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): ParseResult[`Strict-Transport-Security`] =
if (maxAge >= 0)
ParseResult.success(new StrictTransportSecurityImpl(maxAge, includeSubDomains, preload))
else
ParseResult.fail(
"Invalid maxAge value",
s"Strict-Transport-Security param $maxAge must be more or equal to 0 seconds",
)
def unsafeFromDuration(
maxAge: FiniteDuration,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): `Strict-Transport-Security` =
fromLong(maxAge.toSeconds, includeSubDomains, preload).fold(throw _, identity)
def unsafeFromLong(
maxAge: Long,
includeSubDomains: Boolean = true,
preload: Boolean = false,
): `Strict-Transport-Security` =
fromLong(maxAge, includeSubDomains, preload).fold(throw _, identity)
def parse(s: String): ParseResult[`Strict-Transport-Security`] =
ParseResult.fromParser(parser, "Invalid Strict-Transport-Security header")(s)
private[http4s] val parser: Parser0[`Strict-Transport-Security`] = {
val maxAge: Parser[`Strict-Transport-Security`] =
(Parser.ignoreCase("max-age=") *> AdditionalRules.NonNegativeLong).map { (age: Long) =>
`Strict-Transport-Security`
.unsafeFromLong(maxAge = age, includeSubDomains = false, preload = false)
}
sealed trait StsAttribute
case object IncludeSubDomains extends StsAttribute
case object Preload extends StsAttribute
val stsAttributes: Parser0[StsAttribute] = Parser
.ignoreCase("includeSubDomains")
.as(IncludeSubDomains)
.orElse(Parser.ignoreCase("preload").as(Preload))
(maxAge ~ (Parser.string(";") *> ows *> stsAttributes).rep0).map { case (sts, attributes) =>
attributes.foldLeft(sts) {
case (sts, IncludeSubDomains) => sts.withIncludeSubDomains(true)
case (sts, Preload) => sts.withPreload(true)
}
}
}
implicit val headerInstance: Header[`Strict-Transport-Security`, Header.Single] =
Header.createRendered(
ci"Strict-Transport-Security",
h =>
new Renderable {
def render(writer: Writer): writer.type = {
writer << "max-age=" << h.maxAge
if (h.includeSubDomains) writer << "; includeSubDomains"
if (h.preload) writer << "; preload"
writer
}
},
parse,
)
}
sealed abstract case class `Strict-Transport-Security`(
maxAge: Long,
includeSubDomains: Boolean = true,
preload: Boolean = false,
) {
def withIncludeSubDomains(includeSubDomains: Boolean): `Strict-Transport-Security` =
new `Strict-Transport-Security`.StrictTransportSecurityImpl(
this.maxAge,
includeSubDomains,
this.preload,
)
def withPreload(preload: Boolean): `Strict-Transport-Security` =
new `Strict-Transport-Security`.StrictTransportSecurityImpl(
this.maxAge,
this.includeSubDomains,
preload,
)
}