func guessUserProvider(credentials auth.Credentials) string {
	if !credentials.IsServiceAccount() && !credentials.IsTemp() {
		return madmin.BuiltinProvider // regular users are always internal
	}

	claims := credentials.Claims
	if _, ok := claims[ldapUser]; ok {
		return madmin.LDAPProvider // ldap users
	}

	if _, ok := claims[subClaim]; ok {

			return nil, nil, false, errNoAuthToken
		}
		return nil, nil, false, err
	}
	claims := xjwt.NewMapClaims()
	if err := xjwt.ParseWithClaims(token, claims, func(claims *xjwt.MapClaims) ([]byte, error) {
		if claims.AccessKey != globalActiveCred.AccessKey {
			u, ok := globalIAMSys.GetUser(req.Context(), claims.AccessKey)
			if !ok {
				// Credentials will be invalid but for disabled

			writeErrorResponseJSON(ctx, w, APIErr, r.URL)
			return
		}

		// In case of LDAP/OIDC we need to set `opts.claims` to ensure
		// it is associated with the LDAP/OIDC user properly.
		for k, v := range cred.Claims {
			if k == expClaim {
				continue
			}
			opts.claims[k] = v
		}
	} else {
		// We still need to ensure that the target user is a valid LDAP user.
		//

			if err != nil {
				return nil, err
			}
			claims := make(map[string]any)
			claims[expClaim] = UTCNow().Add(expiryDur).Unix()

			claims[ldapUser] = lookupResult.NormDN
			claims[ldapActualUser] = lookupResult.ActualDN
			claims[ldapUserN] = ctx.Sess.LoginUser()

			// Add LDAP attributes that were looked up into the claims.
			for attribKey, attribValue := range lookupResult.Attributes {

- Reverted a kubectl azure auth module change where oidc claim spn: prefix was omitted resulting a breaking behavior with existing Azure AD OIDC enabled api-server ([#87507](https://github.com/kubernetes/kubernetes/pull/87507), [@weinong](https://github.com/weinong)) [SIG API Machinery, Auth and Cloud Provider]...

	if err != nil {
		return nil, err
	}

	claims[expClaim] = UTCNow().Add(expiryDur).Unix()
	claims[ldapUserN] = user
	claims[ldapUser] = lookupResult.NormDN

	cred, err := auth.GetNewCredentialsWithMetadata(claims, globalActiveCred.SecretKey)
	if err != nil {
		return nil, err
	}

	// Set the parent of the temporary access key, this is useful

	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		tc, ok := r.Context().Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt)

		claims, groups, owner, authErr := metricsRequestAuthenticate(r)
		if authErr != nil || (claims != nil && !claims.VerifyIssuer("prometheus", true)) {
			if ok {
				tc.FuncName = "handler.MetricsAuth"
				tc.ResponseRecorder.LogErrBody = true
			}

ject"],"Resource":["arn:aws:s3:::*"]}]}} iam-assets/users.json {} iam-assets/groups.json {} iam-assets/svcaccts.json {"dillon-service-2":{"parent":"oCnAoSQFtdVQtKwrB73j","accessKey":"dillon-service-2","secretKey":"dillon-service-2","groups":null,"claims":{"accessKey":"dillon-service-2","at_hash":"LL4jvrkBRNQhOKiC83RL","aud":"minio-client-app","c_hash":"fjGB4ldChsaf9vSFdZ1P","email":"******@****.***","email_verified":true,"groups":["projecta","projectb"],"iat":1726558680,"iss":"http://127.0.0.1...

	Claims             map[string]interface{} `json:"claims"`
}

var tokens map[string]Resp = map[string]Resp{
	"aaa": {
		User:               "Alice",
		MaxValiditySeconds: 3600,
		Claims: map[string]interface{}{
			"groups": []string{"data-science"},
		},
	},
	"bbb": {
		User:               "Bart",
		MaxValiditySeconds: 3600,
		Claims: map[string]interface{}{

     */
    int CLIENT_UPN_TYPE = 0xC;
    /**
     * Buffer type for client claims information.
     */
    int CLIENT_CLAIMS_TYPE = 0xD;
    /**
     * Buffer type for device information.
     */
    int DEVICE_INFO_TYPE = 0xE;
    /**
     * Buffer type for device claims information.
     */
    int DEVICE_CLAIMS_TYPE = 0xF;

    /**
     * Flag for extra SIDs in logon information.