fs2.protocols.pcapng.InterfaceDescriptionBlock.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2013 Functional Streams for Scala
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fs2.protocols
package pcapng
import fs2.protocols.pcap._
import scodec.Codec
import scodec.bits._
import scodec.codecs._
import scala.concurrent.duration._
case class InterfaceDescriptionBlock(
length: Length,
linkType: LinkType,
snapLen: Long,
bytes: ByteVector
) extends BodyBlock {
// Should be extracted from options. Instead, we currently assume
// that required option wasn't found and fallback to a default value.
def if_tsresol: FiniteDuration = 1.microsecond
}
object InterfaceDescriptionBlock {
def codec(implicit ord: ByteOrdering): Codec[InterfaceDescriptionBlock] = {
val rawCodec = BlockCodec.byBlockBytesCodec(hexConstant, idbCodec)
"IDB" | rawCodec.dropUnits.as[InterfaceDescriptionBlock]
}
private def hexConstant(implicit ord: ByteOrdering): ByteVector =
orderDependent(hex"00000001", hex"01000000")
private def idbCodec(implicit ord: ByteOrdering) =
// format: off
("LinkType" | guint16.xmap[LinkType](LinkType.fromInt, LinkType.toInt) ) ::
("Reserved" | ignore(16) ) ::
("SnapLen" | guint32 ) ::
("Block Bytes" | bytes )
// format: on
}