From c140cef674a426fba60d2b5439591ad982edd0ad Mon Sep 17 00:00:00 2001
From: Matthias Piepkorn <mpiepk@gmail.com>
Date: Wed, 19 Dec 2018 18:11:26 +0000
Subject: [PATCH] update for KEYCLOAK-7774 KEYCLOAK-8438 KEYCLOAK-9050

---
 src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java |   14 ++++----------
 1 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java b/src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java
index ecec352..dd6e1b3 100644
--- a/src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java
+++ b/src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java
@@ -3,7 +3,6 @@
 import org.jboss.logging.Logger;
 import org.jboss.resteasy.spi.HttpRequest;
 import org.keycloak.common.ClientConnection;
-import org.keycloak.events.Details;
 import org.keycloak.events.Errors;
 import org.keycloak.events.EventBuilder;
 import org.keycloak.models.*;
@@ -12,9 +11,9 @@
 import org.keycloak.protocol.cas.mappers.CASAttributeMapper;
 import org.keycloak.protocol.cas.representations.CASErrorCode;
 import org.keycloak.protocol.cas.utils.CASValidationException;
+import org.keycloak.protocol.oidc.utils.OAuth2CodeParser;
 import org.keycloak.protocol.oidc.utils.RedirectUtils;
 import org.keycloak.services.managers.AuthenticationManager;
-import org.keycloak.services.managers.ClientSessionCode;
 import org.keycloak.services.util.DefaultClientSessionContext;
 
 import javax.ws.rs.core.Context;
@@ -93,13 +92,8 @@
 
         String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
 
-        String[] parts = code.split("\\.");
-        if (parts.length == 4) {
-            event.detail(Details.CODE_ID, parts[2]);
-        }
-
-        ClientSessionCode.ParseResult<AuthenticatedClientSessionModel> parseResult = ClientSessionCode.parseResult(code, null, session, realm, client, event, AuthenticatedClientSessionModel.class);
-        if (parseResult.isAuthSessionNotFound() || parseResult.isIllegalHash()) {
+        OAuth2CodeParser.ParseResult parseResult = OAuth2CodeParser.parseCode(session, code, realm, event);
+        if (parseResult.isIllegalCode()) {
             event.error(Errors.INVALID_CODE);
 
             // Attempt to use same code twice should invalidate existing clientSession
@@ -113,7 +107,7 @@
 
         clientSession = parseResult.getClientSession();
 
-        if (parseResult.isExpiredToken()) {
+        if (parseResult.isExpiredCode()) {
             event.error(Errors.EXPIRED_CODE);
             throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
         }

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