Web Request Scripting in Rust

emdeefiveforlife.rs

/* 
This code was written to solve a challenege on hackthebox:
https://app.hackthebox.com/challenges/67
*/

use md5;
use reqwest;
use scraper::{Html, Selector};

#[tokio::main]
async fn main() -> Result<(), reqwest::Error> {
    let client = reqwest::Client::builder().cookie_store(true).build()?;
    let url = "http://94.237.54.42:59509";
    let resp = client.get(url).send().await?;
    let content = resp.text().await?;

    let doc = Html::parse_document(&content);
    let selector = Selector::parse("h3").expect("Failed to parse h3 selector");

    if let Some(element) = doc.select(&selector).next() {
        let input = element.inner_html();
        let digest = md5::compute(input.as_bytes());
        let hashed = format!("{:x}", digest);

        let response = client.post(url).form(&[("hash", &hashed)]).send().await?;

        println!("\n=== Response Details ===");
        println!("Status: {}", response.status());
        println!("Status Code: {}", response.status().as_u16());
        println!("\n=== Headers ===");
        for (name, value) in response.headers() {
            println!(
                "{}: {}",
                name,
                value.to_str().unwrap_or("Unable to display value")
            );
        }

        println!("\n=== Response Body ===");
        let body = response.text().await?;
        println!("{}", body);
    } else {
        eprintln!("Failed to find h3 element")
    }

    Ok(())
}