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mod builder;
mod error;
mod profile;
#[cfg(feature = "rest-api")]
pub(crate) mod rest_api;
pub mod store;
mod subject;
use std::time::Duration;
use oauth2::{
basic::BasicClient, reqwest::http_client, AuthUrl, AuthorizationCode, ClientId, ClientSecret,
CsrfToken, PkceCodeChallenge, PkceCodeVerifier, RedirectUrl, RefreshToken, Scope,
TokenResponse, TokenUrl,
};
use crate::error::{InternalError, InvalidArgumentError};
use store::InflightOAuthRequestStore;
pub use builder::{GithubOAuthClientBuilder, OAuthClientBuilder, OpenIdOAuthClientBuilder};
pub use error::OAuthClientBuildError;
pub use profile::{GithubProfileProvider, OpenIdProfileProvider, ProfileProvider};
pub use subject::{GithubSubjectProvider, OpenIdSubjectProvider, SubjectProvider};
#[derive(Clone)]
pub struct OAuthClient {
client: BasicClient,
extra_auth_params: Vec<(String, String)>,
scopes: Vec<String>,
subject_provider: Box<dyn SubjectProvider>,
inflight_request_store: Box<dyn InflightOAuthRequestStore>,
profile_provider: Box<dyn ProfileProvider>,
}
impl OAuthClient {
fn new(
client: BasicClient,
extra_auth_params: Vec<(String, String)>,
scopes: Vec<String>,
subject_provider: Box<dyn SubjectProvider>,
inflight_request_store: Box<dyn InflightOAuthRequestStore>,
profile_provider: Box<dyn ProfileProvider>,
) -> Self {
Self {
client,
extra_auth_params,
scopes,
subject_provider,
inflight_request_store,
profile_provider,
}
}
pub fn get_authorization_url(
&self,
client_redirect_url: String,
) -> Result<String, InternalError> {
let (pkce_challenge, pkce_verifier) = PkceCodeChallenge::new_random_sha256();
let mut request = self
.client
.authorize_url(CsrfToken::new_random)
.set_pkce_challenge(pkce_challenge);
for (key, value) in self.extra_auth_params.iter() {
request = request.add_extra_param(key, value);
}
for scope in &self.scopes {
request = request.add_scope(Scope::new(scope.into()));
}
let (authorize_url, csrf_state) = request.url();
self.inflight_request_store
.insert_request(
csrf_state.secret().into(),
PendingAuthorization {
pkce_verifier: pkce_verifier.secret().into(),
client_redirect_url,
},
)
.map_err(|err| InternalError::from_source(Box::new(err)))?;
Ok(authorize_url.to_string())
}
pub fn exchange_authorization_code(
&self,
auth_code: String,
csrf_token: &str,
) -> Result<Option<(UserInfo, String)>, InternalError> {
let pending_authorization = match self
.inflight_request_store
.remove_request(csrf_token)
.map_err(|err| InternalError::from_source(Box::new(err)))?
{
Some(pending_authorization) => pending_authorization,
None => return Ok(None),
};
let token_response = self
.client
.exchange_code(AuthorizationCode::new(auth_code))
.set_pkce_verifier(PkceCodeVerifier::new(pending_authorization.pkce_verifier))
.request(http_client)
.map_err(|err| {
InternalError::with_message(format!(
"failed to make authorization code exchange request: {}",
err,
))
})?;
let profile = self
.profile_provider
.get_profile(token_response.access_token().secret())
.map_err(|err| {
InternalError::with_message(format!("failed to get profile details: {}", err,))
})?
.ok_or_else(|| InternalError::with_message("profile details not found".into()))?;
let subject = self
.get_subject(token_response.access_token().secret())?
.ok_or_else(|| InternalError::with_message("subject not found".into()))?;
let user_info = UserInfo {
access_token: token_response.access_token().secret().into(),
expires_in: token_response.expires_in(),
refresh_token: token_response
.refresh_token()
.map(|token| token.secret().into()),
subject,
profile,
};
Ok(Some((user_info, pending_authorization.client_redirect_url)))
}
pub fn exchange_refresh_token(&self, refresh_token: String) -> Result<String, InternalError> {
self.client
.exchange_refresh_token(&RefreshToken::new(refresh_token))
.request(http_client)
.map(|response| response.access_token().secret().into())
.map_err(|err| {
InternalError::with_message(format!(
"failed to make refresh token exchange request: {}",
err,
))
})
}
pub fn get_subject(&self, access_token: &str) -> Result<Option<String>, InternalError> {
self.subject_provider.get_subject(access_token)
}
}
fn new_basic_client(
client_id: String,
client_secret: String,
auth_url: String,
redirect_url: String,
token_url: String,
) -> Result<BasicClient, InvalidArgumentError> {
Ok(BasicClient::new(
ClientId::new(client_id),
Some(ClientSecret::new(client_secret)),
AuthUrl::new(auth_url)
.map_err(|err| InvalidArgumentError::new("auth_url".into(), err.to_string()))?,
Some(
TokenUrl::new(token_url)
.map_err(|err| InvalidArgumentError::new("token_url".into(), err.to_string()))?,
),
)
.set_redirect_url(
RedirectUrl::new(redirect_url)
.map_err(|err| InvalidArgumentError::new("redirect_url".into(), err.to_string()))?,
))
}
#[derive(Debug, PartialEq)]
pub struct PendingAuthorization {
pkce_verifier: String,
client_redirect_url: String,
}
pub struct UserInfo {
access_token: String,
expires_in: Option<Duration>,
refresh_token: Option<String>,
subject: String,
profile: Profile,
}
impl UserInfo {
pub fn access_token(&self) -> &str {
&self.access_token
}
pub fn expires_in(&self) -> Option<Duration> {
self.expires_in
}
pub fn refresh_token(&self) -> Option<&str> {
self.refresh_token.as_deref()
}
pub fn subject(&self) -> &str {
&self.subject
}
pub fn profile(&self) -> &Profile {
&self.profile
}
}
impl std::fmt::Debug for UserInfo {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
let mut debug_struct = f.debug_struct("UserInfo");
debug_struct
.field("access_token", &"<Redacted>".to_string())
.field("expires_in", &self.expires_in)
.field(
"refresh_token",
&self.refresh_token.as_deref().map(|_| "<Redacted>"),
)
.field("subject", &self.subject);
debug_struct.field("profile", &self.profile);
debug_struct.finish()
}
}
#[derive(Clone, Debug)]
pub struct Profile {
pub subject: String,
pub name: Option<String>,
pub given_name: Option<String>,
pub family_name: Option<String>,
pub email: Option<String>,
pub picture: Option<String>,
}
#[cfg(test)]
mod tests {
use super::*;
use std::collections::HashMap;
use url::Url;
use super::store::{InflightOAuthRequestStoreError, MemoryInflightOAuthRequestStore};
const CLIENT_ID: &str = "client_id";
const CLIENT_SECRET: &str = "client_secret";
const AUTH_URL: &str = "http://oauth/auth";
const REDIRECT_URL: &str = "http://oauth/callback";
const TOKEN_ENDPOINT: &str = "/token";
const EXTRA_AUTH_PARAM_KEY: &str = "key";
const EXTRA_AUTH_PARAM_VAL: &str = "val";
const SCOPE1: &str = "scope1";
const SCOPE2: &str = "scope2";
const CLIENT_REDIRECT_URL: &str = "http://client/redirect";
const SUBJECT: &str = "subject";
#[test]
fn client_construction() {
new_basic_client(
"client_id".into(),
"client_secret".into(),
"https://provider.com/auth".into(),
"https://localhost/oauth/callback".into(),
"https://provider.com/token".into(),
)
.expect("Failed to create basic client");
assert!(matches!(
new_basic_client(
"client_id".into(),
"client_secret".into(),
"invalid_auth_url".into(),
"https://localhost/oauth/callback".into(),
"https://provider.com/token".into(),
),
Err(err) if &err.argument() == "auth_url"
));
assert!(matches!(
new_basic_client(
"client_id".into(),
"client_secret".into(),
"https://provider.com/auth".into(),
"invalid_redirect_url".into(),
"https://provider.com/token".into(),
),
Err(err) if &err.argument() == "redirect_url"
));
assert!(matches!(
new_basic_client(
"client_id".into(),
"client_secret".into(),
"https://provider.com/auth".into(),
"https://localhost/oauth/callback".into(),
"invalid_token_url".into(),
),
Err(err) if &err.argument() == "token_url"
));
}
#[test]
fn get_authorization_url() {
let auth_url = Url::parse(AUTH_URL).expect("Failed to parse auth url");
let request_store = Box::new(MemoryInflightOAuthRequestStore::new());
let client = OAuthClient::new(
new_basic_client(
CLIENT_ID.into(),
CLIENT_SECRET.into(),
auth_url.as_str().into(),
REDIRECT_URL.into(),
format!("http://oauth{}", TOKEN_ENDPOINT),
)
.expect("Failed to create basic client"),
vec![(EXTRA_AUTH_PARAM_KEY.into(), EXTRA_AUTH_PARAM_VAL.into())],
vec![SCOPE1.into(), SCOPE2.into()],
Box::new(TestSubjectProvider),
request_store.clone(),
Box::new(TestProfileProvider),
);
let generated_auth_url = Url::parse(
&client
.get_authorization_url(CLIENT_REDIRECT_URL.into())
.expect("Failed to generate auth URL"),
)
.expect("Failed to parse generated auth URL");
assert_eq!(auth_url.origin(), generated_auth_url.origin());
let query_map: HashMap<String, String> =
generated_auth_url.query_pairs().into_owned().collect();
assert_eq!(
query_map.get("client_id").expect("Missing client_id"),
CLIENT_ID,
);
assert_eq!(
query_map.get("redirect_uri").expect("Missing redirect_uri"),
REDIRECT_URL,
);
assert_eq!(
query_map
.get(EXTRA_AUTH_PARAM_KEY)
.expect("Missing extra auth param"),
EXTRA_AUTH_PARAM_VAL,
);
assert_eq!(
query_map.get("scope").expect("Missing scope"),
&format!("{} {}", SCOPE1, SCOPE2),
);
assert_eq!(
query_map
.get("response_type")
.expect("Missing response_type"),
"code",
);
assert_eq!(
query_map
.get("code_challenge_method")
.expect("Missing code_challenge_method"),
"S256",
);
let code_challenge = query_map
.get("code_challenge")
.expect("Missing code_challenge");
let state = query_map.get("state").expect("Missing state");
let pending_authorization = request_store
.remove_request(state)
.expect("Failed to get pending authorization")
.expect("Pending authorization not saved");
assert_eq!(
&pending_authorization.client_redirect_url,
CLIENT_REDIRECT_URL
);
assert_eq!(
PkceCodeChallenge::from_code_verifier_sha256(&PkceCodeVerifier::new(
pending_authorization.pkce_verifier
))
.as_str(),
code_challenge.as_str(),
);
}
#[derive(Clone)]
pub struct TestSubjectProvider;
impl SubjectProvider for TestSubjectProvider {
fn get_subject(&self, _: &str) -> Result<Option<String>, InternalError> {
Ok(Some(SUBJECT.to_string()))
}
fn clone_box(&self) -> Box<dyn SubjectProvider> {
Box::new(self.clone())
}
}
#[derive(Clone)]
pub struct TestProfileProvider;
impl ProfileProvider for TestProfileProvider {
fn get_profile(&self, _: &str) -> Result<Option<Profile>, InternalError> {
Ok(Some(Profile {
subject: "".to_string(),
name: None,
given_name: None,
family_name: None,
email: None,
picture: None,
}))
}
fn clone_box(&self) -> Box<dyn ProfileProvider> {
Box::new(self.clone())
}
}
#[derive(Clone)]
pub struct TestInflightOAuthRequestStore;
impl InflightOAuthRequestStore for TestInflightOAuthRequestStore {
fn insert_request(
&self,
_request_id: String,
_authorization: PendingAuthorization,
) -> Result<(), InflightOAuthRequestStoreError> {
Ok(())
}
fn remove_request(
&self,
_request_id: &str,
) -> Result<Option<PendingAuthorization>, InflightOAuthRequestStoreError> {
Ok(None)
}
fn clone_box(&self) -> Box<dyn InflightOAuthRequestStore> {
Box::new(self.clone())
}
}
}
#[cfg(test)]
#[cfg(all(feature = "actix", feature = "actix-web", feature = "futures"))]
mod actix_tests {
use super::*;
use std::sync::mpsc::channel;
use std::thread::JoinHandle;
use actix::System;
use actix_web::{dev::Server, web, App, HttpResponse, HttpServer};
use futures::Future;
use crate::oauth::store::MemoryInflightOAuthRequestStore;
use super::tests::TestProfileProvider;
use super::tests::TestSubjectProvider;
const CLIENT_ID: &str = "client_id";
const CLIENT_SECRET: &str = "client_secret";
const AUTH_URL: &str = "http://oauth/auth";
const REDIRECT_URL: &str = "http://oauth/callback";
const TOKEN_ENDPOINT: &str = "/token";
const CLIENT_REDIRECT_URL: &str = "http://client/redirect";
const AUTH_CODE: &str = "auth_code";
const MOCK_PKCE_VERIFIER: &str = "F9ZfayKQHV5exVsgM3WyzRt15UQvYxVZBm41iO-h20A";
const ACCESS_TOKEN: &str = "access_token";
const REFRESH_TOKEN: &str = "refresh_token";
const EXPIRES_IN: Duration = Duration::from_secs(3600);
const SUBJECT: &str = "subject";
#[test]
fn exchange_authorization_code() {
let (shutdown_handle, address) = run_mock_oauth_server("exchange_authorization_code");
let request_store = Box::new(MemoryInflightOAuthRequestStore::new());
let csrf_token = "csrf_token";
request_store
.insert_request(
csrf_token.into(),
PendingAuthorization {
pkce_verifier: MOCK_PKCE_VERIFIER.into(),
client_redirect_url: CLIENT_REDIRECT_URL.into(),
},
)
.expect("Failed to insert in-flight request");
let client = OAuthClient::new(
new_basic_client(
CLIENT_ID.into(),
CLIENT_SECRET.into(),
AUTH_URL.into(),
REDIRECT_URL.into(),
format!("{}{}", address, TOKEN_ENDPOINT),
)
.expect("Failed to create basic client"),
vec![],
vec![],
Box::new(TestSubjectProvider),
request_store.clone(),
Box::new(TestProfileProvider),
);
let (user_info, client_redirect_url) = client
.exchange_authorization_code(AUTH_CODE.into(), csrf_token)
.expect("Failed to exchange authorization code")
.expect("Pending request not found");
assert_eq!(&user_info.access_token, ACCESS_TOKEN);
assert_eq!(
user_info.expires_in.expect("expires_in missing"),
EXPIRES_IN
);
assert_eq!(
&user_info.refresh_token.expect("refresh_token missing"),
REFRESH_TOKEN
);
assert_eq!(&user_info.subject, SUBJECT);
assert_eq!(&client_redirect_url, CLIENT_REDIRECT_URL);
assert!(request_store
.remove_request(csrf_token)
.expect("Failed to check in-flight request store")
.is_none());
assert!(client
.exchange_authorization_code(AUTH_CODE.into(), csrf_token)
.expect("Failed to exchange authorization code")
.is_none());
shutdown_handle.shutdown();
}
#[test]
fn exchange_refresh_token() {
let (shutdown_handle, address) = run_mock_oauth_server("exchange_refresh_token");
let client = OAuthClient::new(
new_basic_client(
CLIENT_ID.into(),
CLIENT_SECRET.into(),
AUTH_URL.into(),
REDIRECT_URL.into(),
format!("{}{}", address, TOKEN_ENDPOINT),
)
.expect("Failed to create basic client"),
vec![],
vec![],
Box::new(TestSubjectProvider),
Box::new(MemoryInflightOAuthRequestStore::new()),
Box::new(TestProfileProvider),
);
let access_token = client
.exchange_refresh_token(REFRESH_TOKEN.into())
.expect("Failed to exchange refresh token");
assert_eq!(&access_token, ACCESS_TOKEN);
shutdown_handle.shutdown();
}
fn run_mock_oauth_server(test_name: &str) -> (OAuthServerShutdownHandle, String) {
let (tx, rx) = channel();
let instance_name = format!("OAuth-Server-{}", test_name);
let join_handle = std::thread::Builder::new()
.name(instance_name.clone())
.spawn(move || {
let sys = System::new(instance_name);
let server = HttpServer::new(|| {
App::new().service(web::resource(TOKEN_ENDPOINT).to(token_endpoint))
})
.bind("127.0.0.1:0")
.expect("Failed to bind OAuth server");
let address = format!("http://127.0.0.1:{}", server.addrs()[0].port());
let server = server.disable_signals().system_exit().start();
tx.send((server, address)).expect("Failed to send server");
sys.run().expect("OAuth server runtime failed");
})
.expect("Failed to spawn OAuth server thread");
let (server, address) = rx.recv().expect("Failed to receive server");
(OAuthServerShutdownHandle(server, join_handle), address)
}
fn token_endpoint(form: web::Form<TokenRequestForm>) -> HttpResponse {
match form.grant_type.as_str() {
"authorization_code" => {
assert_eq!(form.code.as_deref(), Some(AUTH_CODE));
assert_eq!(form.code_verifier.as_deref(), Some(MOCK_PKCE_VERIFIER));
assert_eq!(form.redirect_uri.as_deref(), Some(REDIRECT_URL));
HttpResponse::Ok()
.content_type("application/json")
.json(json!({
"token_type": "bearer",
"access_token": ACCESS_TOKEN,
"refresh_token": REFRESH_TOKEN,
"expires_in": EXPIRES_IN.as_secs(),
}))
}
"refresh_token" => {
assert_eq!(form.refresh_token.as_deref(), Some(REFRESH_TOKEN));
HttpResponse::Ok()
.content_type("application/json")
.json(json!({
"token_type": "bearer",
"access_token": ACCESS_TOKEN,
}))
}
_ => panic!("Invalid grant_type"),
}
}
#[derive(Deserialize)]
struct TokenRequestForm {
grant_type: String,
code: Option<String>,
code_verifier: Option<String>,
redirect_uri: Option<String>,
refresh_token: Option<String>,
}
struct OAuthServerShutdownHandle(Server, JoinHandle<()>);
impl OAuthServerShutdownHandle {
pub fn shutdown(self) {
self.0
.stop(false)
.wait()
.expect("Failed to stop OAuth server");
self.1.join().expect("OAuth server thread failed");
}
}
}