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|
use std::{
collections::HashMap,
net::{IpAddr, Ipv4Addr, SocketAddr},
thread, time,
};
use async_trait::async_trait;
use crossterm::event::Event;
use ipnetwork::IpNetwork;
use itertools::Itertools;
use pnet::datalink::{DataLinkReceiver, NetworkInterface};
use tokio::runtime::Runtime;
use crate::{
network::{
dns::{self, Lookup},
Connection, Protocol,
},
OpenSockets,
};
pub struct TerminalEvents {
pub events: Vec<Option<Event>>,
}
impl TerminalEvents {
pub fn new(mut events: Vec<Option<Event>>) -> Self {
events.reverse(); // this is so that we do not have to shift the array
TerminalEvents { events }
}
}
impl Iterator for TerminalEvents {
type Item = Event;
fn next(&mut self) -> Option<Event> {
match self.events.pop() {
Some(ev) => match ev {
Some(ev) => Some(ev),
None => {
thread::sleep(time::Duration::from_millis(900));
self.next()
}
},
None => None,
}
}
}
pub struct NetworkFrames {
pub packets: Vec<Option<Vec<u8>>>,
pub current_index: usize,
}
impl NetworkFrames {
pub fn new(packets: Vec<Option<Vec<u8>>>) -> Box<Self> {
Box::new(NetworkFrames {
packets,
current_index: 0,
})
}
fn next_packet(&mut self) -> Option<&[u8]> {
let next_index = self.current_index;
self.current_index += 1;
self.packets.get(next_index).and_then(|p| p.as_deref())
}
}
impl DataLinkReceiver for NetworkFrames {
fn next(&mut self) -> Result<&[u8], std::io::Error> {
if self.current_index == 0 {
// make it less likely to have a race condition with the display loop
// this is so the tests pass consistently
thread::sleep(time::Duration::from_millis(500));
}
if self.current_index < self.packets.len() {
let action = self.next_packet();
match action {
Some(packet) => Ok(packet),
None => {
thread::sleep(time::Duration::from_secs(1));
Ok(&[])
}
}
} else {
thread::sleep(time::Duration::from_secs(1));
Ok(&[])
}
}
}
pub fn get_open_sockets() -> OpenSockets {
let mut open_sockets = HashMap::new();
let local_ip = IpAddr::V4(Ipv4Addr::new(10, 0, 0, 2));
open_sockets.insert(
Connection::new(
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(1, 1, 1, 1)), 12345),
local_ip,
443,
Protocol::Tcp,
),
String::from("1"),
);
open_sockets.insert(
Connection::new(
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(2, 2, 2, 2)), 54321),
local_ip,
4434,
Protocol::Tcp,
),
String::from("4"),
);
open_sockets.insert(
Connection::new(
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(3, 3, 3, 3)), 1337),
local_ip,
4435,
Protocol::Tcp,
),
String::from("5"),
);
open_sockets.insert(
Connection::new(
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(4, 4, 4, 4)), 1337),
local_ip,
4432,
Protocol::Tcp,
),
String::from("2"),
);
open_sockets.insert(
Connection::new(
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(1, 1, 1, 1)), 12346),
local_ip,
443,
Protocol::Tcp,
),
String::from("1"),
);
let mut local_socket_to_procs = HashMap::new();
let mut connections = std::vec::Vec::new();
for (connection, process_name) in open_sockets {
local_socket_to_procs.insert(connection.local_socket, process_name);
connections.push(connection);
}
OpenSockets {
sockets_to_procs: local_socket_to_procs,
}
}
pub fn get_interfaces() -> Vec<NetworkInterface> {
vec![NetworkInterface {
name: String::from("interface_name"),
description: String::from("Fake interface"),
index: 42,
mac: None,
ips: vec![IpNetwork::V4("10.0.0.2".parse().unwrap())],
// It's important that the IFF_LOOPBACK bit is set to 0.
// Otherwise sniffer will attempt to start parse packets
// at offset 14
flags: 0,
}]
}
pub fn get_interfaces_with_frames(
frames: impl IntoIterator<Item = Box<dyn DataLinkReceiver>>,
) -> Vec<(NetworkInterface, Box<dyn DataLinkReceiver>)> {
get_interfaces().into_iter().zip_eq(frames).collect()
}
pub fn create_fake_dns_client(ips_to_hosts: HashMap<IpAddr, String>) -> Option<dns::Client> {
let runtime = Runtime::new().unwrap();
let dns_client = dns::Client::new(FakeResolver(ips_to_hosts), runtime).unwrap();
Some(dns_client)
}
struct FakeResolver(HashMap<IpAddr, String>);
#[async_trait]
impl Lookup for FakeResolver {
async fn lookup(&self, ip: IpAddr) -> Option<String> {
self.0.get(&ip).cloned()
}
}
|
