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|
use chrono::TimeDelta;
use futures::{
future,
stream::{self, StreamExt as _},
Stream,
};
use sqlx::sqlite::SqlitePool;
use super::{broadcaster::Broadcaster, extract::IdentitySecret, repo::auth::Provider as _, types};
use crate::{
clock::DateTime,
password::Password,
repo::{
error::NotFound as _,
login::{Login, Provider as _},
token::{self, Provider as _},
},
};
pub struct Logins<'a> {
db: &'a SqlitePool,
logins: &'a Broadcaster,
}
impl<'a> Logins<'a> {
pub const fn new(db: &'a SqlitePool, logins: &'a Broadcaster) -> Self {
Self { db, logins }
}
pub async fn login(
&self,
name: &str,
password: &Password,
login_at: &DateTime,
) -> Result<IdentitySecret, LoginError> {
let mut tx = self.db.begin().await?;
let login = if let Some((login, stored_hash)) = tx.auth().for_name(name).await? {
if stored_hash.verify(password)? {
// Password verified; use the login.
login
} else {
// Password NOT verified.
return Err(LoginError::Rejected);
}
} else {
let password_hash = password.hash()?;
tx.logins().create(name, &password_hash).await?
};
let token = tx.tokens().issue(&login, login_at).await?;
tx.commit().await?;
Ok(token)
}
#[cfg(test)]
pub async fn create(&self, name: &str, password: &Password) -> Result<Login, CreateError> {
let password_hash = password.hash()?;
let mut tx = self.db.begin().await?;
let login = tx.logins().create(name, &password_hash).await?;
tx.commit().await?;
Ok(login)
}
pub async fn validate(
&self,
secret: &IdentitySecret,
used_at: &DateTime,
) -> Result<(token::Id, Login), ValidateError> {
let mut tx = self.db.begin().await?;
let login = tx
.tokens()
.validate(secret, used_at)
.await
.not_found(|| ValidateError::InvalidToken)?;
tx.commit().await?;
Ok(login)
}
pub fn limit_stream<E>(
&self,
token: token::Id,
events: impl Stream<Item = E> + std::fmt::Debug,
) -> impl Stream<Item = E> + std::fmt::Debug
where
E: std::fmt::Debug,
{
let token_events = self
.logins
.subscribe()
.filter(move |event| future::ready(event.token == token))
.map(|_| GuardedEvent::TokenRevoked);
let events = events.map(|event| GuardedEvent::Event(event));
stream::select(token_events, events).scan((), |(), event| {
future::ready(match event {
GuardedEvent::Event(event) => Some(event),
GuardedEvent::TokenRevoked => None,
})
})
}
pub async fn expire(&self, relative_to: &DateTime) -> Result<(), sqlx::Error> {
// Somewhat arbitrarily, expire after 7 days.
let expire_at = relative_to.to_owned() - TimeDelta::days(7);
let mut tx = self.db.begin().await?;
let tokens = tx.tokens().expire(&expire_at).await?;
tx.commit().await?;
for event in tokens.into_iter().map(types::TokenRevoked::from) {
self.logins.broadcast(&event);
}
Ok(())
}
pub async fn logout(&self, secret: &IdentitySecret) -> Result<(), ValidateError> {
let mut tx = self.db.begin().await?;
let token = tx
.tokens()
.revoke(secret)
.await
.not_found(|| ValidateError::InvalidToken)?;
tx.commit().await?;
self.logins.broadcast(&types::TokenRevoked::from(token));
Ok(())
}
}
#[derive(Debug, thiserror::Error)]
pub enum LoginError {
#[error("invalid login")]
Rejected,
#[error(transparent)]
DatabaseError(#[from] sqlx::Error),
#[error(transparent)]
PasswordHashError(#[from] password_hash::Error),
}
#[cfg(test)]
#[derive(Debug, thiserror::Error)]
#[error(transparent)]
pub enum CreateError {
DatabaseError(#[from] sqlx::Error),
PasswordHashError(#[from] password_hash::Error),
}
#[derive(Debug, thiserror::Error)]
pub enum ValidateError {
#[error("invalid token")]
InvalidToken,
#[error(transparent)]
DatabaseError(#[from] sqlx::Error),
}
#[derive(Debug)]
enum GuardedEvent<E> {
TokenRevoked,
Event(E),
}
|
