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use crate::event::event::Event;
use crate::packet::packet::Packet;
use crate::session::session::Session;
use std::cell::RefCell;
use std::collections::HashMap;
use std::collections::VecDeque;
use std::rc::Rc;
/******************************************************************************
* Event Queue
******************************************************************************/
pub struct EventQueue {
queue: VecDeque<(Event, Option<Rc<RefCell<Session>>>)>,
}
impl EventQueue {
pub fn new() -> EventQueue {
EventQueue {
queue: VecDeque::new(),
}
}
pub fn add(&mut self, event: Event, session: Option<Rc<RefCell<Session>>>) {
self.queue.push_back((event, session));
}
fn pop(&mut self) -> Option<(Event, Option<Rc<RefCell<Session>>>)> {
self.queue.pop_front()
}
}
/******************************************************************************
* Event Manager
******************************************************************************/
pub trait EventHandle {
fn init(&mut self, event_mgr: &mut EventManager);
fn handle(
&mut self,
event: Event,
queue: &mut EventQueue,
packet: Option<&Packet>,
session: Option<Rc<RefCell<Session>>>,
);
}
pub struct EventManager {
map: HashMap<Event, RefCell<Vec<Box<dyn EventHandle>>>>,
}
impl EventManager {
pub fn new() -> EventManager {
EventManager {
map: HashMap::new(),
}
}
pub fn register(&mut self, event: Event, handle: Box<dyn EventHandle>) {
if let Some(vec) = self.map.get(&event) {
let mut vec = vec.borrow_mut();
vec.push(handle);
} else {
let mut vec = Vec::with_capacity(1024);
vec.push(handle);
self.map.insert(event, RefCell::new(vec));
}
}
pub fn dispatch(&self, packet: Option<&Packet>, queue: &mut EventQueue) {
loop {
let result = queue.pop();
if let Some((event, session)) = result {
println!("Dispatch Event: {}", event);
if let Some(vec) = self.map.get(&event) {
let mut vec = vec.borrow_mut();
for callback in vec.iter_mut() {
callback.handle(event, queue, packet, session.clone());
}
}
} else {
break;
}
}
}
}
/******************************************************************************
* TEST
******************************************************************************/
#[cfg(test)]
mod tests {
use super::EventManager;
use crate::event::manager::EventHandle;
use crate::event::manager::EventQueue;
use crate::packet::packet::Packet;
use crate::plugin::example::ExamplePulgin;
/*
* Frame 217: 131 bytes on wire (1048 bits), 131 bytes captured (1048 bits) on interface en0, id 0
* Section number: 1
* Interface id: 0 (en0)
* Interface name: en0
* Interface description: Wi-Fi
* Encapsulation type: Ethernet (1)
* Arrival Time: Aug 2, 2023 11:49:21.582237000 CST
* [Time shift for this packet: 0.000000000 seconds]
* Epoch Time: 1690948161.582237000 seconds
* [Time delta from previous captured frame: 0.000042000 seconds]
* [Time delta from previous displayed frame: 0.000000000 seconds]
* [Time since reference or first frame: 4.905717000 seconds]
* Frame Number: 217
* Frame Length: 131 bytes (1048 bits)
* Capture Length: 131 bytes (1048 bits)
* [Frame is marked: False]
* [Frame is ignored: False]
* [Protocols in frame: eth:ethertype:ip:tcp:http]
* [Coloring Rule Name: HTTP]
* [Coloring Rule String: http || tcp.port == 80 || http2]
* Ethernet II, Src: Apple_0a:c5:ea (3c:a6:f6:0a:c5:ea), Dst: NewH3CTe_96:38:0e (48:73:97:96:38:0e)
* Destination: NewH3CTe_96:38:0e (48:73:97:96:38:0e)
* Address: NewH3CTe_96:38:0e (48:73:97:96:38:0e)
* .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
* .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
* Source: Apple_0a:c5:ea (3c:a6:f6:0a:c5:ea)
* Address: Apple_0a:c5:ea (3c:a6:f6:0a:c5:ea)
* .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
* .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
* Type: IPv4 (0x0800)
* Internet Protocol Version 4, Src: 192.168.38.63, Dst: 182.61.200.6
* 0100 .... = Version: 4
* .... 0101 = Header Length: 20 bytes (5)
* Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
* 0000 00.. = Differentiated Services Codepoint: Default (0)
* .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
* Total Length: 117
* Identification: 0x0000 (0)
* 010. .... = Flags: 0x2, Don't fragment
* 0... .... = Reserved bit: Not set
* .1.. .... = Don't fragment: Set
* ..0. .... = More fragments: Not set
* ...0 0000 0000 0000 = Fragment Offset: 0
* Time to Live: 64
* Protocol: TCP (6)
* Header Checksum: 0xd557 [correct]
* [Header checksum status: Good]
* [Calculated Checksum: 0xd557]
* Source Address: 192.168.38.63
* Destination Address: 182.61.200.6
* Transmission Control Protocol, Src Port: 57016, Dst Port: 80, Seq: 1, Ack: 1, Len: 77
* Source Port: 57016
* Destination Port: 80
* [Stream index: 9]
* [Conversation completeness: Complete, WITH_DATA (31)]
* [TCP Segment Len: 77]
* Sequence Number: 1 (relative sequence number)
* Sequence Number (raw): 1965697618
* [Next Sequence Number: 78 (relative sequence number)]
* Acknowledgment Number: 1 (relative ack number)
* Acknowledgment number (raw): 4259318185
* 0101 .... = Header Length: 20 bytes (5)
* Flags: 0x018 (PSH, ACK)
* 000. .... .... = Reserved: Not set
* ...0 .... .... = Accurate ECN: Not set
* .... 0... .... = Congestion Window Reduced: Not set
* .... .0.. .... = ECN-Echo: Not set
* .... ..0. .... = Urgent: Not set
* .... ...1 .... = Acknowledgment: Set
* .... .... 1... = Push: Set
* .... .... .0.. = Reset: Not set
* .... .... ..0. = Syn: Not set
* .... .... ...0 = Fin: Not set
* [TCP Flags: ·······AP···]
* Window: 4096
* [Calculated window size: 262144]
* [Window size scaling factor: 64]
* Checksum: 0x7f51 [correct]
* [Checksum Status: Good]
* [Calculated Checksum: 0x7f51]
* Urgent Pointer: 0
* [Timestamps]
* [Time since first frame in this TCP stream: 0.010626000 seconds]
* [Time since previous frame in this TCP stream: 0.000042000 seconds]
* [SEQ/ACK analysis]
* [iRTT: 0.010584000 seconds]
* [Bytes in flight: 77]
* [Bytes sent since last PSH flag: 77]
* TCP payload (77 bytes)
* Hypertext Transfer Protocol
* GET / HTTP/1.1\r\n
* [Expert Info (Chat/Sequence): GET / HTTP/1.1\r\n]
* [GET / HTTP/1.1\r\n]
* [Severity level: Chat]
* [Group: Sequence]
* Request Method: GET
* Request URI: /
* Request Version: HTTP/1.1
* Host: www.baidu.com\r\n
* User-Agent: curl/7.64.1\r\n
*/
// Accept: */*\r\n
/* \r\n
* [Full request URI: http://www.baidu.com/]
* [HTTP request 1/1]
* [Response in frame: 220]
*/
#[test]
fn test_event_manager() {
let bytes = [
0x48, 0x73, 0x97, 0x96, 0x38, 0x0e, 0x3c, 0xa6, 0xf6, 0x0a, 0xc5, 0xea, 0x08, 0x00,
0x45, 0x00, 0x00, 0x75, 0x00, 0x00, 0x40, 0x00, 0x40, 0x06, 0xd5, 0x57, 0xc0, 0xa8,
0x26, 0x3f, 0xb6, 0x3d, 0xc8, 0x06, 0xde, 0xb8, 0x00, 0x50, 0x75, 0x2a, 0x2a, 0x52,
0xfd, 0xe0, 0x09, 0xa9, 0x50, 0x18, 0x10, 0x00, 0x7f, 0x51, 0x00, 0x00, 0x47, 0x45,
0x54, 0x20, 0x2f, 0x20, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, 0x0d, 0x0a,
0x48, 0x6f, 0x73, 0x74, 0x3a, 0x20, 0x77, 0x77, 0x77, 0x2e, 0x62, 0x61, 0x69, 0x64,
0x75, 0x2e, 0x63, 0x6f, 0x6d, 0x0d, 0x0a, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, 0x67,
0x65, 0x6e, 0x74, 0x3a, 0x20, 0x63, 0x75, 0x72, 0x6c, 0x2f, 0x37, 0x2e, 0x36, 0x34,
0x2e, 0x31, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x3a, 0x20, 0x2a, 0x2f,
0x2a, 0x0d, 0x0a, 0x0d, 0x0a, /* HTTP END */
];
let mut event_mgr = EventManager::new();
let mut plugin = ExamplePulgin::new("Example Plugin");
plugin.init(&mut event_mgr);
let mut queue = EventQueue::new();
let mut packet = Packet::new(&bytes, bytes.len() as u32);
let result = packet.handle();
match result {
Ok(_) => {
println!("Ok Packet: {:?}", packet);
}
Err(e) => {
println!("Unexpected Packet: {:?} {:?}", e, packet);
assert_eq!(1, 0);
}
}
event_mgr.dispatch(Some(&packet), &mut queue);
// assert_eq!(1, 0);
}
}
|
