From 4da0d94b96e662b8dffe281d0a2de812f11cda71 Mon Sep 17 00:00:00 2001
From: Jacek Kowalski <Jacek@jacekk.info>
Date: Sun, 10 May 2020 20:40:15 +0000
Subject: [PATCH] Filter potentially dangerous input in GitHub Actions workflows

---
 src/main/java/org/keycloak/protocol/cas/mappers/UserAttributeMapper.java |   50 ++++++++++++++++++++++++++++++++------------------
 1 files changed, 32 insertions(+), 18 deletions(-)

diff --git a/src/main/java/org/keycloak/protocol/cas/mappers/UserAttributeMapper.java b/src/main/java/org/keycloak/protocol/cas/mappers/UserAttributeMapper.java
index 5206126..1ec125d 100644
--- a/src/main/java/org/keycloak/protocol/cas/mappers/UserAttributeMapper.java
+++ b/src/main/java/org/keycloak/protocol/cas/mappers/UserAttributeMapper.java
@@ -1,18 +1,15 @@
 package org.keycloak.protocol.cas.mappers;
 
-import org.keycloak.models.ProtocolMapperModel;
+import org.keycloak.models.*;
+import org.keycloak.models.utils.KeycloakModelUtils;
 import org.keycloak.protocol.ProtocolMapperUtils;
-import org.keycloak.protocol.cas.CASLoginProtocol;
 import org.keycloak.protocol.oidc.mappers.OIDCAttributeMapperHelper;
 import org.keycloak.provider.ProviderConfigProperty;
 
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.Collection;
 import java.util.List;
 import java.util.Map;
-
-import static org.keycloak.protocol.oidc.mappers.OIDCAttributeMapperHelper.JSON_TYPE;
-import static org.keycloak.protocol.oidc.mappers.OIDCAttributeMapperHelper.TOKEN_CLAIM_NAME;
 
 public class UserAttributeMapper extends AbstractCASProtocolMapper {
     private static final List<ProviderConfigProperty> configProperties = new ArrayList<ProviderConfigProperty>();
@@ -35,6 +32,12 @@
         property.setType(ProviderConfigProperty.BOOLEAN_TYPE);
         configProperties.add(property);
 
+        property = new ProviderConfigProperty();
+        property.setName(ProtocolMapperUtils.AGGREGATE_ATTRS);
+        property.setLabel(ProtocolMapperUtils.AGGREGATE_ATTRS_LABEL);
+        property.setHelpText(ProtocolMapperUtils.AGGREGATE_ATTRS_HELP_TEXT);
+        property.setType(ProviderConfigProperty.BOOLEAN_TYPE);
+        configProperties.add(property);
     }
 
     public static final String PROVIDER_ID = "cas-usermodel-attribute-mapper";
@@ -60,23 +63,34 @@
         return "Map a custom user attribute to a token claim.";
     }
 
+    @Override
+    public void setAttribute(Map<String, Object> attributes, ProtocolMapperModel mappingModel, UserSessionModel userSession,
+                             KeycloakSession session, ClientSessionContext clientSessionCt) {
+        UserModel user = userSession.getUser();
+        String attributeName = mappingModel.getConfig().get(ProtocolMapperUtils.USER_ATTRIBUTE);
+        boolean aggregateAttrs = Boolean.valueOf(mappingModel.getConfig().get(ProtocolMapperUtils.AGGREGATE_ATTRS));
+        Collection<String> attributeValue = KeycloakModelUtils.resolveAttribute(user, attributeName, aggregateAttrs);
+        setMappedAttribute(attributes, mappingModel, attributeValue);
+    }
+
     public static ProtocolMapperModel create(String name, String userAttribute,
                                              String tokenClaimName, String claimType,
-                                             boolean consentRequired, String consentText, boolean multivalued) {
-        ProtocolMapperModel mapper = new ProtocolMapperModel();
-        mapper.setName(name);
-        mapper.setProtocolMapper(PROVIDER_ID);
-        mapper.setProtocol(CASLoginProtocol.LOGIN_PROTOCOL);
-        mapper.setConsentRequired(consentRequired);
-        mapper.setConsentText(consentText);
-        Map<String, String> config = new HashMap<String, String>();
-        config.put(ProtocolMapperUtils.USER_ATTRIBUTE, userAttribute);
-        config.put(TOKEN_CLAIM_NAME, tokenClaimName);
-        config.put(JSON_TYPE, claimType);
+                                             boolean multivalued) {
+        return create(name, userAttribute, tokenClaimName, claimType, multivalued, false);
+    }
+
+    public static ProtocolMapperModel create(String name, String userAttribute,
+                                             String tokenClaimName, String claimType,
+                                             boolean multivalued, boolean aggregateAttrs) {
+        ProtocolMapperModel mapper = CASAttributeMapperHelper.createClaimMapper(name, tokenClaimName,
+                claimType, PROVIDER_ID);
+        mapper.getConfig().put(ProtocolMapperUtils.USER_ATTRIBUTE, userAttribute);
         if (multivalued) {
             mapper.getConfig().put(ProtocolMapperUtils.MULTIVALUED, "true");
         }
-        mapper.setConfig(config);
+        if (aggregateAttrs) {
+            mapper.getConfig().put(ProtocolMapperUtils.AGGREGATE_ATTRS, "true");
+        }
         return mapper;
     }
 }

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