pentest 0.1.0

A zero dependency network penetration test tool.
Documentation 
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use std::io::{self, Write};
use std::net::{TcpStream, UdpSocket};
use std::sync::Arc;
use std::thread;
use std::time::Duration;

#[derive(Clone, Debug)]
pub enum Protocol {
    TCP,
    UDP,
}

pub struct Pentest {
    ip: String,
    port: u16,
    counter: usize,
    protocol: Protocol,
    payload: Vec<u8>,
    concurrency: usize,
}

impl Pentest {
    pub fn new(
        ip: &str,
        port: u16,
        counter: usize,
        protocol: Protocol,
        payload: Vec<u8>,
        concurrency: usize,
    ) -> Pentest {
        Pentest {
            ip: ip.to_string(),
            port,
            counter,
            protocol,
            payload,
            concurrency,
        }
    }

    pub fn run(&self) -> io::Result<()> {
        let tasks = self.counter / self.concurrency;
        let tasks_remainder = self.counter % self.concurrency;
        let ip = Arc::new(self.ip.clone());
        let payload = Arc::new(self.payload.clone());

        let mut threads = vec![];

        println!("Starting test with {} threads", self.concurrency);

        for _ in 0..self.concurrency {
            let ip = Arc::clone(&ip);
            let payload = Arc::clone(&payload);
            let pentest = Pentest {
                ip: ip.to_string(),
                port: self.port,
                counter: tasks,
                protocol: self.protocol.clone(),
                payload: payload.to_vec(),
                concurrency: 1,
            };

            threads.push(thread::spawn(move || {
                pentest.run_inner().unwrap();
            }));
        }

        if tasks_remainder > 0 {
            let pentest = Pentest {
                ip: self.ip.clone(),
                port: self.port,
                counter: tasks_remainder,
                protocol: self.protocol.clone(),
                payload: self.payload.clone(),
                concurrency: 1,
            };

            pentest.run_inner()?;
        }

        for (i, thread) in threads.into_iter().enumerate() {
            println!("Joining thread {}", i + 1);
            match thread.join() {
                Ok(_) => println!("Thread {} joined", i + 1),
                Err(err) => eprintln!("Error in thread {}: {:?}", i + 1, err),
            }
        }

        Ok(())
    }

    fn run_inner(&self) -> io::Result<()> {
        match self.protocol {
            Protocol::TCP => self.run_tcp(),
            Protocol::UDP => self.run_udp(),
        }
    }

    fn run_tcp(&self) -> io::Result<()> {
        let addr = format!("{}:{}", self.ip, self.port);

        for i in 0..self.counter {
            println!("Sending TCP packet {} to {}:{}", i + 1, self.ip, self.port);
            match TcpStream::connect(&addr) {
                Ok(mut stream) => {
                    stream.set_write_timeout(Some(Duration::from_secs(1)))?;
                    stream.write_all(&self.payload)?;
                }
                Err(err) => eprintln!("Failed to send TCP packet {}: {}", i + 1, err),
            }
        }

        println!("Finished sending TCP packets");

        Ok(())
    }

    fn run_udp(&self) -> io::Result<()> {
        let socket = UdpSocket::bind("0.0.0.0:0")?;
        socket.set_write_timeout(Some(Duration::from_secs(1)))?;

        let addr = format!("{}:{}", self.ip, self.port);

        for i in 0..self.counter {
            println!("Sending UDP packet {} to {}:{}", i + 1, self.ip, self.port);
            if let Err(err) = socket.send_to(&self.payload, &addr) {
                eprintln!("Failed to send UDP packet {}: {}", i + 1, err);
            }
        }

        println!("Finished sending UDP packets");

        Ok(())
    }
}