fs2.protocols.pcapng.SectionHeaderBlock.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 pcap._
import scodec.Codec
import scodec.bits._
import scodec.codecs._
case class SectionHeaderBlock(
length: Length,
ordering: ByteOrdering,
majorVersion: Int,
minorVersion: Int,
bytes: ByteVector
)
object SectionHeaderBlock {
private val hexConstant = hex"0A0D0D0A"
val codec: Codec[SectionHeaderBlock] =
"SHB" | BlockCodec.unknownByteOrder(hexConstant)(shbCodec).dropUnits.as[SectionHeaderBlock]
private def shbCodec(length: Length) =
// format: off
("Byte-Order Magic" | ByteOrderMagic ).flatPrepend { implicit byteOrder =>
("Major Version" | guint16 ) ::
("Minor Version" | guint16 ) ::
("Block Bytes" | bytes(length.toLong.toInt - 20) )}
// format: on
}