[pve-devel] [PATCH proxmox-openid v4 1/1] fix #4234: openid: add library functions for optional userinfo endpoint

[Thomas Skinner <thomas@atskinner.net>]

Signed-off-by: Thomas Skinner <thomas@atskinner.net>
---
 proxmox-openid/src/lib.rs | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/proxmox-openid/src/lib.rs b/proxmox-openid/src/lib.rs
index fe65fded..b36172c7 100644
--- a/proxmox-openid/src/lib.rs
+++ b/proxmox-openid/src/lib.rs
@@ -31,6 +31,7 @@ use openidconnect::{
     PkceCodeVerifier,
     RedirectUrl,
     Scope,
+    StandardClaims,
     UserInfoClaims,
 };
 
@@ -195,6 +196,15 @@ impl OpenIdAuthenticator {
         &self,
         code: &str,
         private_auth_state: &PrivateAuthState,
+    ) -> Result<(CoreIdTokenClaims, GenericUserInfoClaims), Error> {
+        self.verify_authorization_code_userinfo(code, private_auth_state, true)
+    }
+
+    pub fn verify_authorization_code_userinfo(
+        &self,
+        code: &str,
+        private_auth_state: &PrivateAuthState,
+        query_userinfo: bool,
     ) -> Result<(CoreIdTokenClaims, GenericUserInfoClaims), Error> {
         let code = AuthorizationCode::new(code.to_string());
         // Exchange the code with a token.
@@ -213,6 +223,14 @@ impl OpenIdAuthenticator {
             .claims(&id_token_verifier, &private_auth_state.nonce)
             .map_err(|err| format_err!("Failed to verify ID token: {}", err))?;
 
+        if !query_userinfo {
+            let empty_userinfo_claims = UserInfoClaims::new(
+                StandardClaims::new(id_token_claims.subject().clone()),
+                GenericClaims(Value::Null),
+            );
+            return Ok((id_token_claims.clone(), empty_userinfo_claims));
+        }
+
         let userinfo_claims: GenericUserInfoClaims = self
             .client
             .user_info(token_response.access_token().to_owned(), None)?
@@ -227,9 +245,19 @@ impl OpenIdAuthenticator {
         &self,
         code: &str,
         private_auth_state: &PrivateAuthState,
+    ) -> Result<Value, Error> {
+        self.verify_authorization_code_simple_userinfo(code, private_auth_state, true)
+    }
+
+    /// Like verify_authorization_code_simple_userinfo(), but returns claims as serde_json::Value
+    pub fn verify_authorization_code_simple_userinfo(
+        &self,
+        code: &str,
+        private_auth_state: &PrivateAuthState,
+        query_userinfo: bool,
     ) -> Result<Value, Error> {
         let (id_token_claims, userinfo_claims) =
-            self.verify_authorization_code(code, private_auth_state)?;
+            self.verify_authorization_code_userinfo(code, private_auth_state, query_userinfo)?;
 
         let mut data = serde_json::to_value(id_token_claims)?;
 
-- 
2.39.5


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