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|
use super::{Expression, ExpressionError};
use crate::create_expr_type;
use crate::nlmsg::NfNetlinkAttributes;
use crate::sys;
// A Log expression will log all packets that match the rule.
create_expr_type!(
inline with_builder : Log,
[
(
get_group,
set_group,
with_group,
sys::NFTA_LOG_GROUP,
U32,
u32
),
(
get_prefix,
set_prefix,
with_prefix,
sys::NFTA_LOG_PREFIX,
String,
String
)
]
);
impl Log {
pub fn new(
group: Option<u16>,
prefix: Option<impl Into<String>>,
) -> Result<Log, ExpressionError> {
let mut res = Log {
inner: NfNetlinkAttributes::new(),
//pub group: Option<LogGroup>,
//pub prefix: Option<LogPrefix>,
};
if let Some(group) = group {
res.set_group(group);
}
if let Some(prefix) = prefix {
let prefix = prefix.into();
if prefix.bytes().count() > 127 {
return Err(ExpressionError::TooLongLogPrefix);
}
res.set_prefix(prefix);
}
Ok(res)
}
}
impl Expression for Log {
fn get_name() -> &'static str {
"log"
}
/*
fn from_expr(expr: *const sys::nftnl_expr) -> Result<Self, DeserializationError>
where
Self: Sized,
{
unsafe {
let mut group = None;
if sys::nftnl_expr_is_set(expr, sys::NFTNL_EXPR_LOG_GROUP as u16) {
group = Some(LogGroup(sys::nftnl_expr_get_u32(
expr,
sys::NFTNL_EXPR_LOG_GROUP as u16,
) as u16));
}
let mut prefix = None;
if sys::nftnl_expr_is_set(expr, sys::NFTNL_EXPR_LOG_PREFIX as u16) {
let raw_prefix = sys::nftnl_expr_get_str(expr, sys::NFTNL_EXPR_LOG_PREFIX as u16);
if raw_prefix.is_null() {
return Err(DeserializationError::NullPointer);
} else {
prefix = Some(LogPrefix(CStr::from_ptr(raw_prefix).to_owned()));
}
}
Ok(Log { group, prefix })
}
}
fn to_expr(&self, _rule: &Rule) -> *mut sys::nftnl_expr {
unsafe {
let expr = try_alloc!(sys::nftnl_expr_alloc(b"log\0" as *const _ as *const c_char));
if let Some(log_group) = self.group {
sys::nftnl_expr_set_u32(expr, sys::NFTNL_EXPR_LOG_GROUP as u16, log_group.0 as u32);
};
if let Some(LogPrefix(prefix)) = &self.prefix {
sys::nftnl_expr_set_str(expr, sys::NFTNL_EXPR_LOG_PREFIX as u16, prefix.as_ptr());
};
expr
}
}
*/
}
#[macro_export]
macro_rules! nft_expr_log {
(group $group:ident prefix $prefix:expr) => {
$crate::expr::Log::new(Some($group), Some($prefix))
};
(prefix $prefix:expr) => {
$crate::expr::Log::new(None, Some($prefix))
};
(group $group:ident) => {
$crate::expr::Log::new(Some($group), None)
};
() => {
$crate::expr::Log::new(None, None)
};
}
|
