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|
use std::cell::RefCell;
use std::rc::Rc;
use std::sync::Arc;
use stellar_rs::event::event::Event;
use stellar_rs::event::manager::EventHandle;
use stellar_rs::event::manager::EventManager;
use stellar_rs::event::manager::EventQueue;
use stellar_rs::get_innermost_special_encapsulation;
use stellar_rs::packet::capture::PacketCapture;
use stellar_rs::packet::packet::Encapsulation;
use stellar_rs::packet::packet::Packet;
use stellar_rs::packet::status::PacketStatus;
use stellar_rs::plugin::example::ExamplePulgin;
use stellar_rs::session::session::Session;
use stellar_rs::session::session::SessionProto;
use stellar_rs::session::session::SessionState;
use stellar_rs::thread::thread::ThreadContext;
fn trigger_packet_event(
packet: &Packet,
session: Option<Rc<RefCell<Session>>>,
queue: &mut EventQueue,
) {
let num = packet.encapsulation.len();
for i in 0..num {
match packet.encapsulation[i] {
Encapsulation::ETH(_, _) => {
// TODO
}
Encapsulation::VLAN(_, _) => {
// TODO
}
Encapsulation::MPLS(_, _) => {
// TODO
}
Encapsulation::PWETH(_, _) => {
// TODO
}
Encapsulation::IPv4(_, _) => {
queue.add(Event::IPv4Event, session.clone());
}
Encapsulation::IPv6(_, _) => {
queue.add(Event::IPv6Event, session.clone());
}
Encapsulation::GREv0(_, _) => {
// TODO
}
Encapsulation::GREv1(_, _) => {
// TODO
}
Encapsulation::TCP(_, _) => {
queue.add(Event::TCPEvent, session.clone());
}
Encapsulation::UDP(_, _) => {
queue.add(Event::UDPEvent, session.clone());
}
Encapsulation::ICMP(_, _) => {
// TODO
}
Encapsulation::ICMPv6(_, _) => {
// TODO
}
Encapsulation::GTPv1(_, _) => {
// TODO
}
Encapsulation::L2TP(_, _) => {
// TODO
}
Encapsulation::PPTP(_, _) => {
// TODO
}
Encapsulation::PPP(_, _) => {
// TODO
}
Encapsulation::PPPoE(_, _) => {
// TODO
}
}
}
}
fn trigger_session_event(session: Option<Rc<RefCell<Session>>>, queue: &mut EventQueue) {
if session.is_none() {
return;
}
let session_state = session.clone().unwrap().borrow_mut().get_session_state();
let session_proto = session.clone().unwrap().borrow_mut().get_session_proto();
match session_state {
SessionState::New => match session_proto {
SessionProto::TCP => {
queue.add(Event::TCPOpeningEvent, session);
}
SessionProto::UDP => {
queue.add(Event::UDPOpeningEvent, session);
}
},
SessionState::Active => match session_proto {
SessionProto::TCP => {
queue.add(Event::TCPActiveEvent, session);
}
SessionProto::UDP => {
queue.add(Event::UDPActiveEvent, session);
}
},
SessionState::Inactive => match session_proto {
SessionProto::TCP => {
queue.add(Event::TCPClosedEvent, session);
}
SessionProto::UDP => {
queue.add(Event::UDPExpireEvent, session);
}
},
SessionState::Expired => match session_proto {
SessionProto::TCP => {
queue.add(Event::TCPExpireEvent, session);
}
SessionProto::UDP => {
queue.add(Event::UDPExpireEvent, session);
}
},
}
}
fn handle_one_packet(mut packet: Packet, thread_ctx: &mut ThreadContext) {
let event_mgr = &thread_ctx.event_mgr;
let session_mgr = &mut thread_ctx.session_mgr;
let packet_metrics = &mut thread_ctx.packet_metrics;
let mut queue = EventQueue::new();
let result = packet.handle();
match result {
Ok(_) => {
packet_metrics.add(PacketStatus::Normal);
// println!("Ok Packet: {:?}", packet);
}
Err(e) => {
packet_metrics.add(e);
println!("Unexpected Packet: {:?} {:?}", e, packet);
return;
}
}
match get_innermost_special_encapsulation!(packet, TCP | UDP) {
Some(_) => {
let flow_id = packet.get_flow_id().unwrap();
let session = session_mgr.update(flow_id);
trigger_packet_event(&packet, Some(session.clone()), &mut queue);
trigger_session_event(Some(session.clone()), &mut queue);
}
None => {
trigger_packet_event(&packet, None, &mut queue);
}
}
event_mgr.dispatch(Some(&packet), &mut queue);
let session = session_mgr.expire_oldest_session();
trigger_session_event(session, &mut queue);
event_mgr.dispatch(None, &mut queue);
}
fn main() {
let mut event_mgr = EventManager::new();
let mut plugin1 = ExamplePulgin::new("Plugin1");
let mut plugin2 = ExamplePulgin::new("Plugin2");
plugin1.init(&mut event_mgr);
plugin2.init(&mut event_mgr);
let event_mgr = Arc::new(event_mgr);
let mut thread0_ctx = ThreadContext::new(0, event_mgr.clone());
// let mut thread1_ctx = ThreadContext::new(1, event_mgr.clone());
run_capture_mode("en0", &mut thread0_ctx);
}
fn run_capture_mode(device: &str, thread_ctx: &mut ThreadContext) {
let mut capture = PacketCapture::new(device);
loop {
match capture.next() {
Some(packet) => {
handle_one_packet(packet, thread_ctx);
}
None => {
// do something
}
}
}
}
|
