forked from libpnet/libpnet
/
ethernet.rs
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/
ethernet.rs
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// Copyright (c) 2014, 2015 Robert Clipsham <robert@octarineparrot.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! An ethernet packet abstraction.
use crate::PrimitiveValues;
use std::fmt;
use pnet_base::MacAddr;
use pnet_macros::packet;
/// Represents an Ethernet packet.
#[packet]
pub struct Ethernet {
#[construct_with(u8, u8, u8, u8, u8, u8)]
pub destination: MacAddr,
#[construct_with(u8, u8, u8, u8, u8, u8)]
pub source: MacAddr,
#[construct_with(u16)]
pub ethertype: EtherType,
#[payload]
pub payload: Vec<u8>,
}
#[test]
fn ethernet_header_test() {
let mut packet = [0u8; 14];
{
let mut ethernet_header = MutableEthernetPacket::new(&mut packet[..]).unwrap();
let source = MacAddr(0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc);
ethernet_header.set_source(source);
assert_eq!(ethernet_header.get_source(), source);
let dest = MacAddr(0xde, 0xf0, 0x12, 0x34, 0x45, 0x67);
ethernet_header.set_destination(dest);
assert_eq!(ethernet_header.get_destination(), dest);
ethernet_header.set_ethertype(EtherTypes::Ipv6);
assert_eq!(ethernet_header.get_ethertype(), EtherTypes::Ipv6);
}
let ref_packet = [0xde, 0xf0, 0x12, 0x34, 0x45, 0x67, /* destination */
0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, /* source */
0x86, 0xdd /* ethertype */];
assert_eq!(&ref_packet[..], &packet[..]);
}
/// `EtherTypes` are defined at:
/// <http://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml>.
/// These values should be used in the `Ethernet` `EtherType` field.
///
/// FIXME Should include all
/// A handful of these have been selected since most are archaic and unused.
#[allow(non_snake_case)]
#[allow(non_upper_case_globals)]
pub mod EtherTypes {
use crate::ethernet::EtherType;
/// Internet Protocol version 4 (IPv4) \[RFC7042\].
pub const Ipv4: EtherType = EtherType(0x0800);
/// Address Resolution Protocol (ARP) \[RFC7042\].
pub const Arp: EtherType = EtherType(0x0806);
/// Wake on Lan.
pub const WakeOnLan: EtherType = EtherType(0x0842);
/// IETF TRILL Protocol \[IEEE\].
pub const Trill: EtherType = EtherType(0x22F3);
/// DECnet Phase IV.
pub const DECnet: EtherType = EtherType(0x6003);
/// Reverse Address Resolution Protocol (RARP) \[RFC903\].
pub const Rarp: EtherType = EtherType(0x8035);
/// AppleTalk - EtherTalk \[Apple\].
pub const AppleTalk: EtherType = EtherType(0x809B);
/// AppleTalk Address Resolution Protocol (AARP) \[Apple\].
pub const Aarp: EtherType = EtherType(0x80F3);
/// IPX \[Xerox\].
pub const Ipx: EtherType = EtherType(0x8137);
/// QNX Qnet \[QNX Software Systems\].
pub const Qnx: EtherType = EtherType(0x8204);
/// Internet Protocol version 6 (IPv6) \[RFC7042\].
pub const Ipv6: EtherType = EtherType(0x86DD);
/// Ethernet Flow Control \[IEEE 802.3x\].
pub const FlowControl: EtherType = EtherType(0x8808);
/// CobraNet \[CobraNet\].
pub const CobraNet: EtherType = EtherType(0x8819);
/// MPLS Unicast \[RFC 3032\].
pub const Mpls: EtherType = EtherType(0x8847);
/// MPLS Multicast \[RFC 5332\].
pub const MplsMcast: EtherType = EtherType(0x8848);
/// PPPOE Discovery Stage \[RFC 2516\].
pub const PppoeDiscovery: EtherType = EtherType(0x8863);
/// PPPoE Session Stage \[RFC 2516\].
pub const PppoeSession: EtherType = EtherType(0x8864);
/// VLAN-tagged frame (IEEE 802.1Q).
pub const Vlan: EtherType = EtherType(0x8100);
/// Provider Bridging \[IEEE 802.1ad / IEEE 802.1aq\].
pub const PBridge: EtherType = EtherType(0x88a8);
/// Link Layer Discovery Protocol (LLDP) \[IEEE 802.1AB\].
pub const Lldp: EtherType = EtherType(0x88cc);
/// Precision Time Protocol (PTP) over Ethernet \[IEEE 1588\].
pub const Ptp: EtherType = EtherType(0x88f7);
/// CFM / Y.1731 \[IEEE 802.1ag\].
pub const Cfm: EtherType = EtherType(0x8902);
/// Q-in-Q Vlan Tagging \[IEEE 802.1Q\].
pub const QinQ: EtherType = EtherType(0x9100);
}
/// Represents the `Ethernet::ethertype` field.
#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct EtherType(pub u16);
impl EtherType {
/// Construct a new `EtherType` instance.
pub fn new(val: u16) -> EtherType {
EtherType(val)
}
}
impl PrimitiveValues for EtherType {
type T = (u16,);
fn to_primitive_values(&self) -> (u16,) {
(self.0,)
}
}
impl fmt::Display for EtherType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
"{}",
match self {
&EtherTypes::Ipv4 => "Ipv4", //(0x0800)
&EtherTypes::Arp => "Arp", //(0x0806)
&EtherTypes::WakeOnLan => "WakeOnLan", //(0x0842)
&EtherTypes::Trill => "Trill", //(0x22F3)
&EtherTypes::DECnet => "DECnet", //(0x6003)
&EtherTypes::Rarp => "Rarp", //(0x8035)
&EtherTypes::AppleTalk => "AppleTalk", //(0x809B)
&EtherTypes::Aarp => "Aarp", //(0x80F3)
&EtherTypes::Ipx => "Ipx", //(0x8137)
&EtherTypes::Qnx => "Qnx", //(0x8204)
&EtherTypes::Ipv6 => "Ipv6", //(0x86DD)
&EtherTypes::FlowControl => "FlowControl", //(0x8808)
&EtherTypes::CobraNet => "CobraNet", //(0x8819)
&EtherTypes::Mpls => "Mpls", //(0x8847)
&EtherTypes::MplsMcast => "MplsMcast", //(0x8848)
&EtherTypes::PppoeDiscovery => "PppoeDiscovery", //(0x8863)
&EtherTypes::PppoeSession => "PppoeSession", //(0x8864)
&EtherTypes::Vlan => "Vlan", //(0x8100)
&EtherTypes::PBridge => "PBridge", //(0x88a8)
&EtherTypes::Lldp => "Lldp", //(0x88cc)
&EtherTypes::Ptp => "Ptp", //(0x88f7)
&EtherTypes::Cfm => "Cfm", //(0x8902)
&EtherTypes::QinQ => "QinQ", //(0x9100)
_ => "unknown",
})
}
}
#[test]
fn ether_type_to_str() {
let ipv4 = EtherType(0x0800);
assert_eq!(format!("{}", ipv4), "Ipv4");
let arp = EtherType(0x0806);
assert_eq!(format!("{}", arp), "Arp");
let unknown = EtherType(0x0666);
assert_eq!(format!("{}", unknown), "unknown");
}