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use std::{cmp::max, error, time::Duration};
use http_api_client_endpoint::{
Body, Request, Response, RetryableEndpoint, RetryableEndpointRetry,
};
use oauth2_core::{
access_token_request::{
Body as REQ_Body, BodyWithDeviceAuthorizationGrant, CONTENT_TYPE as REQ_CONTENT_TYPE,
METHOD as REQ_METHOD,
},
access_token_response::{
ErrorBodyError, CONTENT_TYPE as RES_CONTENT_TYPE, GENERAL_ERROR_BODY_KEY_ERROR,
},
device_authorization_grant::{
device_access_token_response::{
ErrorBody as RES_ErrorBody, SuccessfulBody as RES_SuccessfulBody,
},
device_authorization_response::{
SuccessfulBody as DA_RES_SuccessfulBody, INTERVAL_DEFAULT,
},
},
http::{
header::{ACCEPT, CONTENT_TYPE},
Error as HttpError,
},
serde::{de::DeserializeOwned, Serialize},
types::Scope,
};
use serde_json::{Error as SerdeJsonError, Map, Value};
use serde_urlencoded::ser::Error as SerdeUrlencodedSerError;
use crate::ProviderExtDeviceAuthorizationGrant;
#[derive(Clone)]
pub struct DeviceAccessTokenEndpoint<'a, SCOPE>
where
SCOPE: Scope,
{
provider: &'a (dyn ProviderExtDeviceAuthorizationGrant<Scope = SCOPE> + Send + Sync),
device_authorization_response_successful_body: DA_RES_SuccessfulBody,
interval: Duration,
}
impl<'a, SCOPE> DeviceAccessTokenEndpoint<'a, SCOPE>
where
SCOPE: Scope,
{
pub fn new(
provider: &'a (dyn ProviderExtDeviceAuthorizationGrant<Scope = SCOPE> + Send + Sync),
device_authorization_response_successful_body: DA_RES_SuccessfulBody,
) -> Self {
let interval = max(
device_authorization_response_successful_body.interval(),
Duration::from_secs(INTERVAL_DEFAULT as u64),
);
Self {
provider,
device_authorization_response_successful_body,
interval,
}
}
}
impl<'a, SCOPE> RetryableEndpoint for DeviceAccessTokenEndpoint<'a, SCOPE>
where
SCOPE: Scope + Serialize + DeserializeOwned,
{
type RetryReason = DeviceAccessTokenEndpointRetryReason;
type RenderRequestError = DeviceAccessTokenEndpointError;
type ParseResponseOutput = Result<RES_SuccessfulBody<SCOPE>, RES_ErrorBody>;
type ParseResponseError = DeviceAccessTokenEndpointError;
fn render_request(
&self,
_retry: Option<&RetryableEndpointRetry<Self::RetryReason>>,
) -> Result<Request<Body>, Self::RenderRequestError> {
let mut body = BodyWithDeviceAuthorizationGrant::new(
self.device_authorization_response_successful_body
.device_code
.to_owned(),
self.provider.client_id().cloned(),
self.provider.client_secret().cloned(),
);
if let Some(extra) = self.provider.device_access_token_request_body_extra(
&body,
&self.device_authorization_response_successful_body,
) {
body.set_extra(extra);
}
if let Some(request_ret) = self.provider.device_access_token_request_rendering(
&body,
&self.device_authorization_response_successful_body,
) {
let request = request_ret
.map_err(|err| DeviceAccessTokenEndpointError::CustomRenderingRequestFailed(err))?;
return Ok(request);
}
let body = REQ_Body::<SCOPE>::DeviceAuthorizationGrant(body);
let body_str = serde_urlencoded::to_string(body)
.map_err(DeviceAccessTokenEndpointError::SerRequestBodyFailed)?;
let request = Request::builder()
.method(REQ_METHOD)
.uri(self.provider.token_endpoint_url().as_str())
.header(CONTENT_TYPE, REQ_CONTENT_TYPE.to_string())
.header(ACCEPT, RES_CONTENT_TYPE.to_string())
.body(body_str.as_bytes().to_vec())
.map_err(DeviceAccessTokenEndpointError::MakeRequestFailed)?;
Ok(request)
}
fn parse_response(
&self,
response: Response<Body>,
_retry: Option<&RetryableEndpointRetry<Self::RetryReason>>,
) -> Result<Result<Self::ParseResponseOutput, Self::RetryReason>, Self::ParseResponseError>
{
if let Some(body_ret_ret) = self
.provider
.device_access_token_response_parsing(&response)
{
let body_ret = body_ret_ret
.map_err(|err| DeviceAccessTokenEndpointError::CustomParsingResponseFailed(err))?;
return Ok(body_ret);
}
if response.status().is_success() {
let map = serde_json::from_slice::<Map<String, Value>>(response.body())
.map_err(DeviceAccessTokenEndpointError::DeResponseBodyFailed)?;
if !map.contains_key(GENERAL_ERROR_BODY_KEY_ERROR) {
let body = serde_json::from_slice::<RES_SuccessfulBody<SCOPE>>(response.body())
.map_err(DeviceAccessTokenEndpointError::DeResponseBodyFailed)?;
return Ok(Ok(Ok(body)));
}
}
let body = serde_json::from_slice::<RES_ErrorBody>(response.body())
.map_err(DeviceAccessTokenEndpointError::DeResponseBodyFailed)?;
match body.error {
ErrorBodyError::AuthorizationPending => {
return Ok(Err(
DeviceAccessTokenEndpointRetryReason::AuthorizationPending,
))
}
ErrorBodyError::SlowDown => {
return Ok(Err(DeviceAccessTokenEndpointRetryReason::SlowDown))
}
_ => {}
}
Ok(Ok(Err(body)))
}
fn next_retry_in(&self, retry: &RetryableEndpointRetry<Self::RetryReason>) -> Duration {
match retry.reason {
DeviceAccessTokenEndpointRetryReason::AuthorizationPending => self.interval,
DeviceAccessTokenEndpointRetryReason::SlowDown => self.interval,
}
}
fn max_retry_count(&self) -> usize {
360
}
}
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum DeviceAccessTokenEndpointRetryReason {
AuthorizationPending,
SlowDown,
}
#[derive(thiserror::Error, Debug)]
pub enum DeviceAccessTokenEndpointError {
#[error("CustomRenderingRequestFailed {0}")]
CustomRenderingRequestFailed(Box<dyn error::Error + Send + Sync>),
#[error("SerRequestBodyFailed {0}")]
SerRequestBodyFailed(SerdeUrlencodedSerError),
#[error("MakeRequestFailed {0}")]
MakeRequestFailed(HttpError),
#[error("CustomParsingResponseFailed {0}")]
CustomParsingResponseFailed(Box<dyn error::Error + Send + Sync>),
#[error("DeResponseBodyFailed {0}")]
DeResponseBodyFailed(SerdeJsonError),
}