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use core::panic;
use std::{net::SocketAddr, pin::Pin};
use confindent::Confindent;
use http_body_util::{BodyExt, Full};
use hyper::{
Request, Response, StatusCode,
body::{Body, Bytes, Incoming},
server::conn::http1,
service::Service,
};
use hyper_util::rt::TokioIo;
use tokio::{net::TcpListener, process::Command, runtime::Runtime};
#[derive(Clone, Debug)]
pub struct Settings {
script_filename: String,
env: Vec<(String, String)>,
}
const CONF_DEFAULT: &str = "/etc/corgi.conf";
fn main() {
let conf_path = std::env::args().nth(1).unwrap_or(String::from(CONF_DEFAULT));
let conf = Confindent::from_file(conf_path).expect("failed to open conf");
let script = conf.child("Script").expect("no 'Script' key in conf");
let settings = Settings {
script_filename: script.value_owned().expect("'Script' key has no value'"),
env: vec![],
};
let rt = Runtime::new().unwrap();
rt.block_on(async { run(settings).await });
}
async fn run(settings: Settings) {
let addr = SocketAddr::from(([0, 0, 0, 0], 2562));
let listen = TcpListener::bind(addr).await.unwrap();
let svc = Svc { settings };
loop {
let (stream, _caddr) = listen.accept().await.unwrap();
let io = TokioIo::new(stream);
let svc_clone = svc.clone();
tokio::task::spawn(
async move { http1::Builder::new().serve_connection(io, svc_clone).await },
);
}
}
#[derive(Clone, Debug)]
struct Svc {
settings: Settings,
}
impl Service<Request<Incoming>> for Svc {
type Response = Response<Full<Bytes>>;
type Error = hyper::Error;
type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>> + Send>>;
fn call(&self, req: Request<Incoming>) -> Self::Future {
fn make<B: Into<Bytes>>(b: B) -> Result<Response<Full<Bytes>>, hyper::Error> {
Ok(Response::builder().body(Full::new(b.into())).unwrap())
}
let settings = self.settings.clone();
Box::pin(async { Ok(Self::handle(settings, req).await) })
}
}
impl Svc {
async fn handle(settings: Settings, req: Request<Incoming>) -> Response<Full<Bytes>> {
let method = req.method().as_str().to_ascii_uppercase();
let path = req.uri().path().to_owned();
let headers = req.headers().clone();
let body = req.into_body().collect().await.unwrap().to_bytes();
let content_length = body.len();
let mut cmd = Command::new(&settings.script_filename);
cmd.env("SCRIPT_NAME", settings.script_filename)
.env("PATH_INFO", path)
.env("REQUEST_METHOD", method);
for (header, value) in headers {
if let Some(header) = header {
let hname = header.as_str();
let hvalue = value.to_str().unwrap();
cmd.env(hname.to_ascii_uppercase(), hvalue);
if hname.to_ascii_lowercase() == "user-agent" {
println!("USER_AGENT: {hvalue}");
}
}
}
/*if content_length > 0 {
cmd.env("CONTENT_LENGTH", content_length.to_string());
}*/
let output = cmd.output().await.unwrap();
let response_raw = output.stdout;
let mut response = Response::builder();
println!("{}", String::from_utf8_lossy(&response_raw));
let mut curr = response_raw.as_slice();
let mut status = None;
let mut headers = vec![];
let body = loop {
let nl = curr.iter().position(|b| *b == b'\n').expect("no nl in header");
let line = &curr[..nl];
let colon = line.iter().position(|b| *b == b':').expect("no colon in header");
let key = &line[..colon];
let value = &line[colon + 1..];
headers.push((key, value));
let key_string = String::from_utf8_lossy(key);
if key_string == "Status" {
let value_string = String::from_utf8_lossy(value);
if let Some((raw_code, raw_msg)) = value_string.trim().split_once(' ') {
let code: usize = raw_code.parse().unwrap();
status = Some((code, raw_msg.to_owned()));
}
}
// Body next
if curr[nl + 1] == b'\n' || (curr[nl + 1] == b'\r' && curr[nl + 2] == b'\n') {
break &curr[nl + 2..];
} else {
curr = &curr[nl + 1..];
}
};
match status {
None => response = response.status(StatusCode::OK),
Some((code, _status)) => {
response = response.status(StatusCode::from_u16(code as u16).unwrap());
}
}
for (key, value) in headers {
response = response.header(key.to_vec(), value.to_vec());
}
response.body(Full::new(Bytes::from(body.to_vec()))).unwrap()
}
fn make<B: Into<Bytes>>(b: B) -> Response<Full<Bytes>> {
Response::builder().body(Full::new(b.into())).unwrap()
}
}
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