feat: New CaptchaBuilder to build Captcha struct

Signed-off-by: Awiteb <a@4rs.nl>
This commit is contained in:
Awiteb 2024-08-12 13:46:56 +00:00
parent 27d985114a
commit 28425d939f
Signed by: awiteb
GPG key ID: 3F6B55640AA6682F

View file

@ -18,21 +18,19 @@ mod captcha_gen;
mod finder;
mod storage;
use std::{sync::Arc, time::Duration};
use salvo_core::{
handler::{none_skipper, Skipper},
Depot, FlowCtrl, Handler, Request, Response,
};
pub use {captcha_gen::*, finder::*, storage::*};
// Exports from other crates
pub use captcha::{CaptchaName, Difficulty as CaptchaDifficulty};
/// Key used to insert the captcha state into the depot
pub const CAPTCHA_STATE_KEY: &str = "::salvo_captcha::captcha_state";
/// Captcha struct, contains the token and answer.
#[non_exhaustive]
#[allow(clippy::type_complexity)]
pub struct Captcha<S, F>
where
S: CaptchaStorage,
@ -41,7 +39,7 @@ where
/// The captcha finder, used to find the captcha token and answer from the request.
finder: F,
/// The storage of the captcha, used to store and get the captcha token and answer.
storage: S,
storage: Arc<S>,
/// The skipper of the captcha, used to skip the captcha check.
skipper: Box<dyn Skipper>,
}
@ -66,30 +64,101 @@ pub enum CaptchaState {
StorageError,
}
/// The [`Captcha`] builder
pub struct CaptchaBuilder<S, F>
where
S: CaptchaStorage,
F: CaptchaFinder,
{
storage: S,
finder: F,
captcha_expired_after: Duration,
clean_interval: Duration,
skipper: Box<dyn Skipper>,
}
impl<S, F> CaptchaBuilder<Arc<S>, F>
where
S: CaptchaStorage,
F: CaptchaFinder,
{
/// Create a new [`CaptchaBuilder`] with the given storage and finder.
pub fn new(storage: Arc<S>, finder: F) -> Self {
CaptchaBuilder {
storage,
finder,
captcha_expired_after: Duration::from_secs(60 * 5),
clean_interval: Duration::from_secs(60),
skipper: Box::new(none_skipper),
}
}
/// Set the duration after which the captcha will be expired, default is 5 minutes.
///
/// After the captcha is expired, it will be removed from the storage, and the user needs to get a new captcha.
pub fn expired_after(mut self, expired_after: impl Into<Duration>) -> Self {
self.captcha_expired_after = expired_after.into();
self
}
/// Set the interval to clean the expired captcha, default is 1 minute.
///
/// The expired captcha will be removed from the storage every interval.
pub fn clean_interval(mut self, interval: impl Into<Duration>) -> Self {
self.clean_interval = interval.into();
self
}
/// Set the skipper of the captcha, default without skipper.
///
/// The skipper is used to skip the captcha check, for example, you can skip the captcha check for the admin user.
pub fn skipper(mut self, skipper: impl Skipper) -> Self {
self.skipper = Box::new(skipper);
self
}
/// Build the [`Captcha`] with the given configuration.
pub fn build(self) -> Captcha<S, F> {
Captcha::new(
self.storage,
self.finder,
self.captcha_expired_after,
self.clean_interval,
self.skipper,
)
}
}
impl<S, F> Captcha<S, F>
where
S: CaptchaStorage,
F: CaptchaFinder,
{
/// Create a new Captcha
pub fn new(storage: S, finder: F) -> Self {
fn new(
storage: Arc<S>,
finder: F,
captcha_expired_after: Duration,
clean_interval: Duration,
skipper: Box<dyn Skipper>,
) -> Self {
let task_storage = Arc::clone(&storage);
tokio::spawn(async move {
loop {
if let Err(err) = task_storage.clear_expired(captcha_expired_after).await {
log::error!("Captcha storage error: {err}")
}
tokio::time::sleep(clean_interval).await;
}
});
Self {
finder,
storage,
skipper: Box::new(none_skipper),
skipper,
}
}
/// Returns the captcha storage
pub fn storage(&self) -> &S {
&self.storage
}
/// Set the captcha skipper, the skipper will be used to check if the captcha check should be skipped.
pub fn skipper(mut self, skipper: impl Skipper) -> Self {
self.skipper = Box::new(skipper);
self
}
}
/// The captcha extension of the depot.
@ -109,7 +178,7 @@ impl CaptchaDepotExt for Depot {
impl<S, F> Handler for Captcha<S, F>
where
S: CaptchaStorage,
F: CaptchaFinder + 'static, // why?
F: CaptchaFinder,
{
async fn handle(
&self,
@ -118,7 +187,7 @@ where
_: &mut Response,
_: &mut FlowCtrl,
) {
if self.skipper.skipped(req, depot) {
if self.skipper.as_ref().skipped(req, depot) {
log::info!("Captcha check is skipped");
depot.insert(CAPTCHA_STATE_KEY, CaptchaState::Skipped);
return;