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mod config;
mod http;
mod info_hash;
mod peer;
mod udp;
use anyhow::Result;
use clap::Parser;
use colored::Colorize;
use config::*;
use http::query::{Announce, Scrape};
use info_hash::InfoHash;
use std::{
net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, UdpSocket},
str::FromStr,
time::Duration,
};
use udp::Server;
use url::Url;
#[tokio::main]
async fn main() -> Result<()> {
fn print_announce(interval: u32, leechers: u32, seeders: u32, peers: peer::Buffer) {
println!("{}", format!("Update interval: {interval}s").yellow());
println!("{}: {seeders}, {}: {leechers}", "S".green(), "L".red());
if peers.0.is_empty() {
println!("{}", "No peers.".red());
} else {
for peer in peers.0 {
println!("{peer}")
}
}
}
fn print_scrape(leechers: u32, peers: u32, seeders: u32) {
println!(
"{}: {seeders}, {}: {peers}, {}: {leechers} - total",
"S".green(),
"P".yellow(),
"L".red()
);
}
fn print_full_scrape(leechers: u32, peers: u32, seeders: u32, info_hash: InfoHash) {
println!(
"{}: {seeders}, {}: {peers}, {}: {leechers} - {info_hash}",
"S".green(),
"P".yellow(),
"L".red()
);
}
fn parse_udp_socket_address(url: &Url) -> Result<SocketAddr> {
let host = url
.host_str()
.expect("UDP tracker hostname is required to continue");
Ok(SocketAddr::new(
match IpAddr::from_str(host.trim_start_matches('[').trim_end_matches(']')) {
Ok(ip) => ip,
Err(_) => dns_lookup::lookup_host(host)?
.next()
.expect("UDP tracker DNS is not reachable"),
},
url.port()
.expect("UDP tracker hostname is required to continue"),
))
}
fn udp_server_for(address: SocketAddr, port: u16, timeout: Duration) -> Result<UdpSocket> {
let server = if address.is_ipv6() {
UdpSocket::bind(SocketAddr::V6(SocketAddrV6::new(
Ipv6Addr::UNSPECIFIED,
port,
0,
0,
)))?
} else {
UdpSocket::bind(SocketAddr::V4(SocketAddrV4::new(
Ipv4Addr::UNSPECIFIED,
port,
)))?
};
server.set_read_timeout(Some(timeout))?;
server.set_write_timeout(Some(timeout))?;
Ok(server)
}
match Cli::parse().command {
Command::Announce(config) => {
for url in &config.tracker {
match url.scheme() {
"http" | "https" => {
let query = Announce::new(url.as_str(), &config.info_hash, config.port)?;
println!(
"{}",
format!("Sending HTTP announce to `{query}`...").blue()
);
if url.host_str().is_some_and(|h| h.ends_with(".i2p")) {
match http::announce_i2p(
&query,
Duration::from_secs(config.timeout),
config.proxy_url.as_deref(),
)
.await
{
Ok(response) => print_announce(
response.interval,
response.incomplete,
response.complete,
response.peers,
),
Err(e) => println!("{}", e.to_string().red()),
}
} else {
match http::announce(
&query,
Duration::from_secs(config.timeout),
config.proxy_url.as_deref(),
)
.await
{
Ok(response) => print_announce(
response.interval,
response.incomplete,
response.complete,
response.peers,
),
Err(e) => println!("{}", e.to_string().red()),
}
}
}
"udp" => {
let tracker = parse_udp_socket_address(url)?;
println!(
"{}",
format!("Sending UDP announce to `{tracker}`...").blue()
);
match udp_server_for(
tracker,
config.port,
Duration::from_secs(config.timeout),
)?
.announce(&config.info_hash, &tracker)
{
Ok(response) => print_announce(
response.interval,
response.leechers,
response.seeders,
response.peers,
),
Err(e) => println!("{}", e.to_string().red()),
}
}
_ => todo!(),
}
}
}
Command::Scrape(config) => {
for url in &config.tracker {
match url.scheme() {
"http" | "https" => {
let query = Scrape::new(url.as_str(), &config.info_hash)?;
println!(
"{}",
format!("Sending HTTP scrape request to `{query}`...").blue()
);
match http::scrape(
&query,
Duration::from_secs(config.timeout),
config.proxy_url.as_deref(),
)
.await
{
Ok(response) => {
print_scrape(
response.total.incomplete,
response.total.complete,
response.total.downloaded,
);
for (info_hash, total) in response.stats {
print_full_scrape(
total.incomplete,
total.complete,
total.downloaded,
info_hash,
)
}
}
Err(e) => println!("{}", e.to_string().red()),
}
}
"udp" => {
for url in &config.tracker {
let tracker = parse_udp_socket_address(url)?;
println!(
"{}",
format!("Sending UDP scrape request to `{tracker}`...").blue()
);
match udp_server_for(
tracker,
config.port,
Duration::from_secs(config.timeout),
)?
.scrape(&config.info_hash, &tracker)
{
Ok(response) => {
print_scrape(
response.leechers,
response.peers,
response.seeders,
);
}
Err(e) => println!("{}", e.to_string().red()),
}
}
}
scheme => todo!("{scheme} tracker support yet not implemented"),
}
}
}
}
Ok(())
}