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use crate::ffi;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum TcpFlag {
Any,
Syn,
Ack,
Fin,
Rst,
Psh,
Urg,
Ece,
Cwr,
}
impl Default for TcpFlag {
fn default() -> Self {
TcpFlag::Any
}
}
impl From<TcpFlag> for u8 {
fn from(tcp_flag: TcpFlag) -> Self {
match tcp_flag {
TcpFlag::Any => 0,
TcpFlag::Fin => ffi::tcp::TH_FIN as u8,
TcpFlag::Syn => ffi::tcp::TH_SYN as u8,
TcpFlag::Rst => ffi::tcp::TH_RST as u8,
TcpFlag::Psh => ffi::tcp::TH_PSH as u8,
TcpFlag::Ack => ffi::tcp::TH_ACK as u8,
TcpFlag::Urg => ffi::tcp::TH_URG as u8,
TcpFlag::Ece => ffi::tcp::TH_ECE as u8,
TcpFlag::Cwr => ffi::tcp::TH_CWR as u8,
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, Default)]
pub struct TcpFlagSet(Vec<TcpFlag>);
impl<'a> From<&'a TcpFlagSet> for u8 {
fn from(set: &TcpFlagSet) -> Self {
set.0.iter().fold(0, |acc, &x| (acc | u8::from(x)))
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, Default)]
pub struct TcpFlags {
pub check: TcpFlagSet,
pub mask: TcpFlagSet,
}
impl TcpFlags {
pub fn new(check: &[TcpFlag], mask: &[TcpFlag]) -> Self {
TcpFlags {
check: TcpFlagSet(check.to_vec()),
mask: TcpFlagSet(mask.to_vec()),
}
}
}
impl<CHECK: AsRef<[TcpFlag]>, MASK: AsRef<[TcpFlag]>> From<(CHECK, MASK)> for TcpFlags {
fn from(pair: (CHECK, MASK)) -> Self {
TcpFlags::new(pair.0.as_ref(), pair.1.as_ref())
}
}