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From: Dietmar Maurer <dietmar@proxmox.com>
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Subject: [pbs-devel] [PATH proxmox-backup v1 06/12] api: add openid redirect
 API
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---
 src/api2/access/domain.rs | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/api2/access/domain.rs b/src/api2/access/domain.rs
index 2dff9d32..3c9e3615 100644
--- a/src/api2/access/domain.rs
+++ b/src/api2/access/domain.rs
@@ -8,6 +8,7 @@ use proxmox::api::{api, Permission};
 use proxmox::api::router::Router;
 
 use crate::api2::types::*;
+use crate::config::domains::{OPENID_STATE_DIR, OpenIdRealmConfig};
 
 #[api(
     returns: {
@@ -60,10 +61,48 @@ fn list_domains() -> Result<Value, Error> {
     }
 
     Ok(list.into())
+}
+
+#[api(
+    protected: true,
+    input: {
+        properties: {
+            realm: {
+                schema: REALM_ID_SCHEMA,
+            },
+            "redirect-url": {
+                description: "Redirection Url. The client should set this to used server url.",
+                type: String,
+            },
+        },
+    },
+    returns: {
+        description: "Redirection URL.",
+        type: String,
+    },
+    access: {
+        description: "Anyone can access this (before the user is authenticated).",
+        permission: &Permission::World,
+    },
+)]
+/// Create OpenID Redirect Session
+fn create_redirect_session(
+    realm: String,
+    redirect_url: String,
+    _rpcenv: &mut dyn RpcEnvironment,
+) -> Result<Value, Error> {
+
+    let (domains, _digest) = crate::config::domains::config()?;
+    let config: OpenIdRealmConfig = domains.lookup("openid", &realm)?;
 
+    let open_id = config.authenticator(&redirect_url)?;
 
+    let url = open_id.authorize_url(OPENID_STATE_DIR, &realm)?
+        .to_string();
 
+    Ok(url.into())
 }
 
 pub const ROUTER: Router = Router::new()
+    .post(&API_METHOD_CREATE_REDIRECT_SESSION)
     .get(&API_METHOD_LIST_DOMAINS);
-- 
2.30.2