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use iron;
use iron::error::HttpResult;
use iron::headers::ContentType;
use iron::modifiers::{Header, Redirect};
use iron::mime::{Mime, TopLevel, SubLevel};
use iron::status;
use iron::{Iron, IronError, Request, IronResult, Response, Chain, Listening, Plugin, Url};
use iron_sessionstorage::SessionStorage;
use iron_sessionstorage::backends::SignedCookieBackend;
use iron_sessionstorage::traits::*;
use iron_sessionstorage;
use params::{Params, Value};
use regex::Regex;
use render;
use router::Router;
use staticfile::Static;
use systemd::journal;
use systemd::unit;
use persistent::Write;
use rusqlite::Connection;
use db;
use auth;
#[derive(Debug)]
pub struct Context {
pub base_url: String,
pub conn: Connection,
}
impl iron::typemap::Key for Context {
type Value = Context;
}
#[derive(Default, Debug, Clone)]
struct Login {
user: String,
}
impl iron_sessionstorage::Value for Login {
fn get_key() -> &'static str {
"login"
}
fn into_raw(self) -> String {
self.user
}
fn from_raw(v: String) -> Option<Self> {
Some(Login { user: v })
}
}
fn overview(r: &mut Request) -> IronResult<Response> {
let mut _value = try!(r.session().get::<Login>());
let units = unit::get_units("*").unwrap();
let sections = ["service", "timer", "socket", "target", "slice", "mount", "path"];
let units_by_section = sections
.iter()
.map(|&s| {
(s.to_owned(),
units
.iter()
.filter(|&u| &u.type_ == s)
.collect::<Vec<&unit::Unit>>())
})
.collect::<Vec<_>>();
// let res = Ok(Response::with((status::Ok,
// Header(ContentType::html()),
// render_message(&format!("Hello, {} ({})",
// name,
// session_value.0),
// &units))));
// info!("Updating session value. Current value: {}", session_value.0);
// session_value.0.push('a');
// try!(r.session().set(session_value));
let renderer = make_renderer(r)?;
Ok(Response::with((status::Ok,
Header(ContentType::html()),
renderer.system_status(&units_by_section))))
}
fn journal(r: &mut Request) -> IronResult<Response> {
let unit = iexpect!(r.extensions.get::<Router>().unwrap().find("unit"),
status::BadRequest);
let re = Regex::new(r"[-_\w\d]*").unwrap();
if !re.is_match(unit) {
return Ok(Response::with((status::BadRequest,
format!("Unit ({}) does not match {}", unit, re))));
}
Ok(Response::with((status::Ok, itry!(journal::get_log(unit, 100)))))
}
fn unit_status(r: &mut Request) -> IronResult<Response> {
let unit_name = iexpect!(r.extensions.get::<Router>().unwrap().find("unit"),
status::BadRequest)
.to_string();
let re = Regex::new(r"[-_\w\d]*").unwrap();
if !re.is_match(&unit_name) {
return Ok(Response::with((status::BadRequest,
format!("Unit ({}) does not match {}", unit_name, re))));
}
let ref unit = itry!(unit::get_units(&unit_name))[0];
let log = itry!(journal::get_log(&unit_name, 15));
let renderer = make_renderer(r)?;
Ok(Response::with((status::Ok, Header(ContentType::html()), renderer.unit_status(&unit, &log))))
}
fn get_logged_in_user(r: &mut Request) -> IronResult<Option<Login>> {
let login = r.session().get::<Login>()?;
// Session storage doesn't have a way to delete its cookie,
// so we set the username to empty on logout.
if let &Some(Login { ref user }) = &login {
if user.is_empty() {
return Ok(None);
}
}
Ok(login)
}
fn login(r: &mut Request) -> IronResult<Response> {
let renderer = make_renderer(r)?;
let is_retry = r.method == iron::method::Method::Post;
Ok(Response::with((status::Ok, Header(ContentType::html()), renderer.login_page(is_retry))))
}
fn authenticate(r: &mut Request) -> IronResult<Response> {
let (user, password) = {
let map = r.get_ref::<Params>().unwrap();
let user = match map.get("username") {
Some(&Value::String(ref v)) => v,
_ => panic!("no username in params: {:?}", map),
};
let password = match map.get("password") {
Some(&Value::String(ref v)) => v,
_ => panic!("no password in params: {:?}", map),
};
(user.to_string(), password.to_string())
};
let hash = {
let mutex = r.get::<Write<Context>>().unwrap();
let context = mutex.lock().unwrap();
db::lookup_user(&context.conn, &user).unwrap()
};
if let Some(true) = hash.map(|h| auth::validate(&password, &h)) {
let login = Login { user: user.to_string() }; // TODO Make a validated login type
info!("User logged in: {:?}", login);
r.session().set(login)?;
let url = url_for!(r, "root");
Ok(Response::with((status::Found, Redirect(url))))
} else {
login(r)
}
}
fn logout(r: &mut Request) -> IronResult<Response> {
r.session().set::<Login>(Default::default());
let url = url_for!(r, "root");
Ok(Response::with((status::Found, Redirect(url))))
}
fn make_renderer(r: &mut Request) -> IronResult<render::Renderer> {
let user = get_logged_in_user(r)?.map(|u| u.user);
let base_url = format!("{}", url_for!(r, "root"));
Ok(render::Renderer { base_url: base_url, user: user })
}
fn static_file(r: &mut Request) -> IronResult<Response> {
let file = iexpect!(r.extensions.get::<Router>().unwrap().find("file"),
status::BadRequest);
let css = ContentType(Mime(TopLevel::Text,
SubLevel::Css, vec![]));
Ok(match file {
"main.css" =>
Response::with((status::Ok, Header(css),
include_str!("data/main.css"))),
_ => Response::with(status::NotFound)
})
}
pub fn serve(context: Context, port: u16) -> HttpResult<Listening> {
// TODO: Use a real secret.
let secret = b"secret2".to_vec();
let router = router!(
root: get "/" => overview,
login: get "/login" => login,
authenticate: post "/login" => authenticate,
logout: get "/logout" => logout,
details: get "/status/:unit" => unit_status,
journal: get "/journal/:unit" => journal,
css: get "/static/:file" => static_file,
);
let mut chain = Chain::new(router);
chain.link_around(SessionStorage::new(SignedCookieBackend::new(secret)));
chain.link(Write::<Context>::both(context));
let bind_address = format!("{}:{}", "::", port);
Iron::new(chain).http(bind_address.as_str())
}
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