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OIDC: make response_mode optional

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Fractal omits the `response_mode` field when in an auth flow (its value must be
the literal "S256", so it's mainly here for OIDC compliance I guess). Accepting
this lets it proceed to the next authentication step.
This commit is contained in:
lafleur 2025-08-09 01:03:44 +02:00
commit 696adfc90b
2 changed files with 4 additions and 18 deletions
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7
src/web/oidc/consent.rs
View file

@ -1,4 +1,3 @@
use std::borrow::Cow;
use askama::Template;
use axum::http::StatusCode;
use oxide_auth::frontends::simple::request::Body;
@ -27,11 +26,7 @@ pub fn oidc_consent_form(hostname: &str, query: &AuthorizationQuery) -> OidcResp
/// Render the html contents of the user consent page.
fn consent_page(hostname: &str, query: &AuthorizationQuery, route: &str, nonce: &str) -> String {
let response_mode = &query.response_mode.clone()
.unwrap_or_else(|| match query.redirect_uri.scheme() {
| "https" => Cow::Borrowed("fragment"),
| _ => Cow::Borrowed("query")
});
let response_mode = &query.response_mode.clone().unwrap_or("fragment".to_string());
let template = ConsentPageTemplate {
nonce,
hostname,

15
src/web/oidc/login.rs
View file

@ -62,13 +62,9 @@ impl TryFrom<OidcRequest> for LoginQuery {
let Ok(redirect_uri) = Url::from_str(&redirect_uri) else {
return Err(LoginError("invalid field: redirect_uri".to_owned()));
};
// response_mode is not strictly needed : its value defaults to "fragment"
// response_mode is not strictly needed : it must be the literal "fragment"
// when over https. It's required by the spec but Fractal doesn't provide it.
let response_mode = body.unique_value("response_mode")
.unwrap_or_else(|| match redirect_uri.scheme() {
| "https" => Cow::Borrowed("fragment"),
| _ => Cow::Borrowed("query")
});
let response_mode = body.unique_value("response_mode").unwrap_or(Cow::Borrowed("fragment"));
let client_secret = body.unique_value("client_secret").map(|s| s.to_string());
Ok(Self {
@ -108,12 +104,7 @@ pub fn oidc_login_form(hostname: &str, query: &AuthorizationQuery) -> OidcRespon
/// Render the html contents of the login page.
fn login_page(hostname: &str, query: &AuthorizationQuery, route: &str, nonce: &str) -> String {
let response_mode = &query.response_mode
.clone()
.unwrap_or_else(|| match query.redirect_uri.scheme() {
| "https" => "fragment".to_string(),
| _ => "query".to_string()
});
let response_mode = &query.response_mode.clone().unwrap_or("fragment".to_string());
let template = LoginPageTemplate {
nonce,
hostname,