return token
	}
	return r.Form.Get(xhttp.AmzSecurityToken)
}

// Fetch claims in the security token returned by the client, doesn't return
// errors - upon errors the returned claims map will be empty.
func mustGetClaimsFromToken(r *http.Request) map[string]any {
	claims, _ := getClaimsFromToken(getSessionToken(r))
	return claims
}

func getClaimsFromTokenWithSecret(token, secret string) (*xjwt.MapClaims, error) {

		// Check if the access key is part of users credentials.
		u, ok := globalIAMSys.GetUser(req.Context(), claims.AccessKey)
		if !ok {
			return nil, nil, false, errInvalidAccessKeyID
		}
		ucred := u.Credentials
		// get embedded claims
		eclaims, s3Err := checkClaimsFromToken(req, ucred)
		if s3Err != ErrNone {
			return nil, nil, false, errAuthentication
		}

		maps.Copy(claims.MapClaims, eclaims)

			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.
		//

		writeSTSErrorResponse(ctx, w, ErrSTSInvalidParameterValue, err)
		return
	}

	claims[expClaim] = UTCNow().Add(expiryDur).Unix()
	claims[ldapUser] = ldapUserDN
	claims[ldapActualUser] = ldapActualUserDN
	claims[ldapUserN] = ldapUsername
	// Add lookup up LDAP attributes as claims.
	for attrib, value := range lookupResult.Attributes {
		claims[ldapAttribPrefix+attrib] = value
	}
	tokenRevokeType := r.Form.Get(stsRevokeTokenType)

**We recommend setting `policy` as a custom claim for the JWT service provider follow [here](https://docs.wso2.com/display/IS550/Configuring+Claims+for+a+Service+Provider) and [here](https://docs.wso2.com/display/IS550/Handling+Custom+Claims+with+the+JWT+Bearer+Grant+Type) for relevant docs on how to configure claims for a service provider.**

### 5. Setup MinIO with OpenID configuration URL

		_, ok := accessKey.Claims[subClaim]
		if !ok {
			continue // OpenID access keys must have a sub claim
		}
		if (!listSTSKeys && !accessKey.IsServiceAccount()) || (!listServiceAccounts && accessKey.IsServiceAccount()) {
			continue // skip if not the type we want
		}
		arn, ok := accessKey.Claims[roleArnClaim].(string)
		if !ok {
			if _, ok := accessKey.Claims[iamPolicyClaimNameOpenID()]; !ok {

			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 {

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 {

		// 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 if globalIAMSys.LDAPConfig.Enabled() {
		// In case of LDAP we need to resolve the targetUser to a DN and
		// query their groups:
		opts.claims[ldapUserN] = targetUser // simple username

     */
    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.