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use std::time::Duration;
use argon2::{Argon2, PasswordVerifier};
use axum::{
extract::{Path, State},
http::StatusCode,
response::{IntoResponse, Redirect, Response},
routing::get,
Form, Router,
};
use axum_extra::extract::{
cookie::{Cookie, SameSite},
CookieJar,
};
use maud::{html, PreEscaped};
use tap::Tap;
use crate::server::store::Store;
use super::{render_html, ApiState, CookieDomain, MakeError, MakeErrorMessage};
pub fn bind(app: Router<ApiState>) -> Router<ApiState> {
app.route("/login", get(handle_login_get).post(handle_login_post))
.route("/logout", get(logout))
.route(
"/invite/:invite",
get(handle_invite_get).post(handle_invite_post),
)
}
fn make_form(status: StatusCode, error: Option<&str>, submit: &str) -> Response {
render_html(
html!(title {"login"}),
html! {
@if let Some(error) = error {
p { "error: " (PreEscaped(error)) }
}
form action="" method="post" {
label for="name" { "name:" }
input type="text" id="name" name="name" {}
label for="password" { "password:" }
input type="password" id="password" name="password" {}
input type="submit" value=(submit) {}
}
},
)
.tap_mut(|response| *response.status_mut() = status)
}
#[axum::debug_handler]
async fn handle_login_get() -> Response {
make_form(StatusCode::OK, None, "login")
}
#[derive(serde::Deserialize)]
struct FormData {
name: String,
password: String,
}
#[axum::debug_handler(state = ApiState)]
async fn handle_login_post(
jar: CookieJar,
State(store): State<Store>,
State(CookieDomain(cookie_domain)): State<CookieDomain>,
Form(form): Form<FormData>,
) -> Result<Response, Response> {
// read lock scope
{
let account = store.get_account(&form.name).await.ok_or_else(|| {
make_form(StatusCode::FORBIDDEN, Some("invalid credentials"), "login")
})?;
Argon2::default()
.verify_password(form.password.as_bytes(), &account.password.parsed())
.ok()
.ok_or_else(|| {
make_form(StatusCode::FORBIDDEN, Some("invalid credentials"), "login")
})?;
}
let token = store
.create_token(&form.name)
.await
.make_error()?
.error_message(
StatusCode::INTERNAL_SERVER_ERROR,
"account disappeared while generating token",
)?;
let mut cookie = Cookie::new("dissociate-token", token);
cookie.set_http_only(true);
cookie.set_max_age(Duration::from_secs(60 * 60 * 24 * 29).try_into().ok());
cookie.set_path("/");
cookie.set_same_site(SameSite::None);
cookie.set_secure(true);
if let Some(cookie_domain) = cookie_domain {
cookie.set_domain(cookie_domain);
}
Ok((jar.add(cookie), Redirect::to("/")).into_response())
}
#[axum::debug_handler]
async fn logout(jar: CookieJar) -> Response {
(
jar.remove(Cookie::from("dissociate-token")),
Redirect::to("/login"),
)
.into_response()
}
fn invite_error() -> Response {
render_html(
html!(),
html! {
h1 { "unknown invite" }
a href="/" { "return home" }
},
)
.tap_mut(|response| *response.status_mut() = StatusCode::NOT_FOUND)
}
#[axum::debug_handler]
async fn handle_invite_get(Path(invite): Path<String>, State(store): State<Store>) -> Response {
if !store.check_invite(&invite).await {
return invite_error();
}
make_form(StatusCode::OK, None, "create account")
}
const NAME_ERROR: &str = "invalid name
requirements:
must not be empty
must not exceed 32 characters
must not contain control characters";
#[axum::debug_handler(state = ApiState)]
async fn handle_invite_post(
jar: CookieJar,
Path(invite): Path<String>,
State(store): State<Store>,
State(CookieDomain(cookie_domain)): State<CookieDomain>,
Form(form): Form<FormData>,
) -> Result<Response, Response> {
if form.name.to_ascii_lowercase() == "empty" || form.password.to_ascii_lowercase() == "empty" {
return Err(make_form(
StatusCode::BAD_REQUEST,
Some("are you jokester?"),
"create account",
));
}
if form.name.is_empty() || form.name.len() > 32 || form.name.chars().any(|ch| ch.is_control()) {
return Err(make_form(
StatusCode::BAD_REQUEST,
Some(&NAME_ERROR.replace('\n', "<br>")),
"create account",
));
}
if form.password.is_empty() {
return Err(make_form(
StatusCode::BAD_REQUEST,
Some("password cannot be empty"),
"create account",
));
}
if store.get_account(&form.name).await.is_some() {
return Err(make_form(
StatusCode::CONFLICT,
Some("name taken"),
"create account",
));
}
if !store.use_invite(&invite).await.make_error()? {
return Err(invite_error());
}
if !store
.create_account(&form.name, &form.password)
.await
.make_error()?
{
return Err(make_form(
StatusCode::CONFLICT,
Some("name taken"),
"create account",
));
}
let token = store
.create_token(&form.name)
.await
.make_error()?
.error_message(
StatusCode::INTERNAL_SERVER_ERROR,
"account disappeared while generating token",
)?;
let mut cookie = Cookie::new("dissociate-token", token);
cookie.set_http_only(true);
cookie.set_max_age(Duration::from_secs(60 * 60 * 24 * 29).try_into().ok());
cookie.set_path("/");
cookie.set_same_site(SameSite::None);
cookie.set_secure(true);
if let Some(cookie_domain) = cookie_domain {
cookie.set_domain(cookie_domain);
}
Ok((jar.add(cookie), Redirect::to("/")).into_response())
}
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