all_clients: HashMap<ClientName, User>,
}
-pub type RoutedPacket = Box<[u8]>; // not MIME data
+pub struct RoutedPacket {
+ pub data: RoutedPacketData,
+// pub source: Option<ClientName>, // for eh, tracing, etc.
+}
+
+// not MIME data, valid SLIP (checked)
+pub type RoutedPacketData = Box<[u8]>;
+
+// loop prevention
+// we don't decrement the ttl (naughty) but loops cannot arise
+// because only the server has any routing code, and server
+// has no internal loops, so worst case is
+// client if -> client -> server -> client' -> client if'
+// and the ifs will decrement the ttl.
+mod may_route {
+ #[derive(Clone,Debug)]
+ pub struct MayRoute(());
+ impl MayRoute {
+ pub fn came_from_outside_hippotatd() -> Self { Self(()) }
+ }
+}
+pub use may_route::MayRoute;
-#[throws(PacketError)]
pub async fn route_packet(global: &Global,
- conn: &str, link: &(dyn Display + Sync),
- packet: RoutedPacket, daddr: IpAddr)
+ transport_conn: &str, source: Option<&ClientName>,
+ packet: RoutedPacketData, daddr: IpAddr,
+ _may_route: MayRoute)
{
let c = &global.config;
let len = packet.len();
let trace = |how: &str, why: &str| {
- trace!("{} {} {} {} {:?} len={}",
- conn, link, how, why, daddr, len);
+ trace!("{} to={:?} came=={} user={} len={} {}",
+ how, daddr, transport_conn,
+ match source {
+ Some(s) => (s as &dyn Display),
+ None => &"local",
+ },
+ len, why);
};
let (dest, why) =
if daddr == c.vaddr || ! c.vnetwork.iter().any(|n| n.contains(&daddr)) {
- (None, "ipif-inbound-xxx")
+ (Some(&global.local_rx), "via=local")
} else if daddr == c.vrelay {
- (None, "vrelay")
+ (None, " vrelay")
} else if let Some(client) = global.all_clients.get(&ClientName(daddr)) {
- (Some(&client.route), "client")
+ (Some(&client.route), "via=client")
} else {
(None, "no-client")
};
let dest = if let Some(d) = dest { d } else {
- trace("discard", why); return;
+ trace("discard ", why); return;
};
+ let packet = RoutedPacket {
+ data: packet,
+// source: source.cloned(),
+ };
match dest.send(packet).await {
Ok(()) => trace("forward", why),
Err(_) => trace("task-crashed!", why),