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use std::ffi::CString;
use std::io;
use std::net::{Ipv4Addr, Ipv6Addr};
use crate::{internal, Error, Result};
/// A handle to a 6in4 tunnel. The interface is automatically deleted on drop.
#[derive(Debug)]
pub struct Sit {
name: String,
}
impl Drop for Sit {
fn drop(&mut self) {
let _ = self.do_delete();
}
}
impl Sit {
pub fn new(name: &str, master: &str, laddr: Ipv4Addr, raddr: Ipv4Addr) -> Result<Self> {
let tnlname = CString::new(name)?.into_raw();
let ifmaster = CString::new(master)?.into_raw();
let err = unsafe {
internal::netlinkd_create_6in4(
tnlname,
ifmaster,
u32::from(laddr).to_be(),
u32::from(raddr).to_be(),
)
};
let _ = unsafe { CString::from_raw(tnlname) };
let _ = unsafe { CString::from_raw(ifmaster) };
if err < 0 {
Err(Error::Io(io::Error::last_os_error()))
} else {
Ok(Self {
name: name.to_owned(),
})
}
}
fn do_delete(&self) -> Result<()> {
let tnlname = CString::new(self.name.as_str())?.into_raw();
let err = unsafe { internal::netlinkd_delete_tunnel(tnlname) };
let _ = unsafe { CString::from_raw(tnlname) };
if err < 0 {
Err(Error::Io(io::Error::last_os_error()))
} else {
Ok(())
}
}
}
/// A handle to a 4in6 tunnel. The interface is automatically deleted on drop.
#[derive(Debug)]
pub struct IpIp6 {
name: String,
}
impl Drop for IpIp6 {
fn drop(&mut self) {
let _ = self.do_delete();
}
}
impl IpIp6 {
pub fn new(name: &str, master: &str, laddr: Ipv6Addr, raddr: Ipv6Addr) -> Result<Self> {
let tnlname = CString::new(name)?.into_raw();
let ifmaster = CString::new(master)?.into_raw();
let err = unsafe {
internal::netlinkd_create_4in6(
tnlname,
ifmaster,
&laddr.octets() as *const u8,
&raddr.octets() as *const u8,
)
};
let _ = unsafe { CString::from_raw(tnlname) };
let _ = unsafe { CString::from_raw(ifmaster) };
if err < 0 {
Err(Error::Io(io::Error::last_os_error()))
} else {
Ok(Self {
name: name.to_owned(),
})
}
}
fn do_delete(&self) -> Result<()> {
let tnlname = CString::new(self.name.as_str())?.into_raw();
let err = unsafe { internal::netlinkd_delete_tunnel(tnlname) };
let _ = unsafe { CString::from_raw(tnlname) };
if err < 0 {
Err(Error::Io(io::Error::last_os_error()))
} else {
Ok(())
}
}
}
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