Add AuthenticatorAdapterService,

components/authentication-framework/org.wso2.carbon.identity.application.authentication.framework/src/main/java/org/wso2/carbon/identity/application/authentication/framework/AuthenticatorAdapterService.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2025, WSO2 LLC. (http://www.wso2.com).
+ *
+ * WSO2 LLC. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.wso2.carbon.identity.application.authentication.framework;
+
+import org.wso2.carbon.identity.application.common.model.FederatedAuthenticatorConfig;
+import org.wso2.carbon.identity.application.common.model.LocalAuthenticatorConfig;
+
+/**
+ * Authenticator Adapter Service which responsible for creating ApplicationAuthenticator for the provided user defined
+ * authenticator configs.
+ */
+public interface AuthenticatorAdapterService {
+
+    /**
+     * Get the ApplicationAuthenticator for the given user defined federated authenticator config.
+     *
+     * @param config    Federated Authenticator Config.
+     * @return  FederatedApplicationAuthenticator instance.
+     */
+    FederatedApplicationAuthenticator getFederatedAuthenticatorAdapter(FederatedAuthenticatorConfig config);
+
+    /**
+     * Get the ApplicationAuthenticator for the given user defined local authenticator config.
+     *
+     * @param config    Local Authenticator Config.
+     * @return  LocalApplicationAuthenticator instance.
+     */
+    LocalApplicationAuthenticator getLocalAuthenticatorAdapter(LocalAuthenticatorConfig config);
+}

components/authentication-framework/org.wso2.carbon.identity.application.authentication.framework/src/main/java/org/wso2/carbon/identity/application/authentication/framework/config/loader/UIBasedConfigurationLoader.java

@@ -18,6 +18,7 @@
 
 package org.wso2.carbon.identity.application.authentication.framework.config.loader;
 
+import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.identity.application.authentication.framework.ApplicationAuthenticator;
@@ -34,6 +35,8 @@
 import org.wso2.carbon.identity.application.authentication.framework.internal.FrameworkServiceDataHolder;
 import org.wso2.carbon.identity.application.authentication.framework.util.FrameworkConstants;
 import org.wso2.carbon.identity.application.authentication.framework.util.FrameworkUtils;
+import org.wso2.carbon.identity.application.common.ApplicationAuthenticatorService;
+import org.wso2.carbon.identity.application.common.exception.AuthenticatorMgtException;
 import org.wso2.carbon.identity.application.common.model.AuthenticationStep;
 import org.wso2.carbon.identity.application.common.model.FederatedAuthenticatorConfig;
 import org.wso2.carbon.identity.application.common.model.IdentityProvider;
@@ -42,6 +45,8 @@
 import org.wso2.carbon.identity.application.common.model.RequestPathAuthenticatorConfig;
 import org.wso2.carbon.identity.application.common.model.ServiceProvider;
 import org.wso2.carbon.identity.application.common.model.script.AuthenticationScriptConfig;
+import org.wso2.carbon.identity.application.common.model.UserDefinedFederatedAuthenticatorConfig;
+import org.wso2.carbon.identity.application.common.model.UserDefinedLocalAuthenticatorConfig;
 import org.wso2.carbon.identity.application.mgt.ApplicationConstants;
 import org.wso2.carbon.idp.mgt.IdentityProviderManagementException;
 import org.wso2.carbon.idp.mgt.IdentityProviderManager;
@@ -189,7 +194,7 @@ public SequenceConfig getSequence(ServiceProvider serviceProvider, String tenant
             loadFederatedAuthenticators(authenticationStep, stepConfig, tenantDomain);
 
             // loading local authenticators
-            loadLocalAuthenticators(authenticationStep, stepConfig);
+            loadLocalAuthenticators(authenticationStep, stepConfig, tenantDomain);
 
             sequenceConfig.getStepMap().put(stepOrder, stepConfig);
         }
@@ -264,12 +269,13 @@ protected void loadFederatedAuthenticators(AuthenticationStep authenticationStep
 
                 String actualAuthenticatorName = federatedAuthenticator.getName();
                 // assign it to the step
-                loadStepAuthenticator(stepConfig, federatedIDP, actualAuthenticatorName);
+                loadStepAuthenticator(stepConfig, federatedIDP, actualAuthenticatorName, tenantDomain);
             }
         }
     }
 
-    protected void loadLocalAuthenticators(AuthenticationStep authenticationStep, StepConfig stepConfig) {
+    protected void loadLocalAuthenticators(AuthenticationStep authenticationStep, StepConfig stepConfig,
+                                           String tenantDomain) throws FrameworkException {
 
         LocalAuthenticatorConfig[] localAuthenticators = authenticationStep.getLocalAuthenticatorConfigs();
         if (localAuthenticators != null) {
@@ -278,12 +284,13 @@ protected void loadLocalAuthenticators(AuthenticationStep authenticationStep, St
             // assign it to the step
             for (LocalAuthenticatorConfig localAuthenticator : localAuthenticators) {
                 String actualAuthenticatorName = localAuthenticator.getName();
-                loadStepAuthenticator(stepConfig, localIdp, actualAuthenticatorName);
+                loadStepAuthenticator(stepConfig, localIdp, actualAuthenticatorName, tenantDomain);
             }
         }
     }
 
-    private void loadStepAuthenticator(StepConfig stepConfig, IdentityProvider idp, String authenticatorName) {
+    private void loadStepAuthenticator(StepConfig stepConfig, IdentityProvider idp, String authenticatorName,
+                                           String tenantDomain) throws FrameworkException {
 
         AuthenticatorConfig authenticatorConfig = null;
 
@@ -300,14 +307,18 @@ private void loadStepAuthenticator(StepConfig stepConfig, IdentityProvider idp,
             authenticatorConfig = new AuthenticatorConfig();
             authenticatorConfig.setName(authenticatorName);
 
+            ApplicationAuthenticator appAuthenticatorForConfig = null;
             for (ApplicationAuthenticator appAuthenticator : FrameworkServiceComponent.getAuthenticators()) {
 
                 if (authenticatorName.equalsIgnoreCase(appAuthenticator.getName())) {
-                    authenticatorConfig.setApplicationAuthenticator(appAuthenticator);
+                    appAuthenticatorForConfig = appAuthenticator;
                     break;
                 }
             }
-
+            if (appAuthenticatorForConfig == null) {
+                appAuthenticatorForConfig = resolveUserDefinedAuthenticator(authenticatorName, idp, tenantDomain);
+            }
+            authenticatorConfig.setApplicationAuthenticator(appAuthenticatorForConfig);
             stepConfig.getAuthenticatorList().add(authenticatorConfig);
         }
 
@@ -321,4 +332,35 @@ private void loadStepAuthenticator(StepConfig stepConfig, IdentityProvider idp,
             stepConfig.setMultiOption(true);
         }
     }
+
+    private ApplicationAuthenticator resolveUserDefinedAuthenticator(
+            String authenticatorName, IdentityProvider idp, String tenantDomain) throws FrameworkException {
+
+        try {
+            if (StringUtils.equals(idp.getIdentityProviderName(), FrameworkConstants.LOCAL_IDP_NAME)) {
+
+                UserDefinedLocalAuthenticatorConfig config = ApplicationAuthenticatorService.getInstance()
+                        .getUserDefinedLocalAuthenticator(authenticatorName, tenantDomain);
+                if (config != null) {
+                    return FrameworkServiceDataHolder.getInstance().getAuthenticatorAdapterService()
+                            .getLocalAuthenticatorAdapter(config);
+                }
+            } else {
+                UserDefinedFederatedAuthenticatorConfig config = (UserDefinedFederatedAuthenticatorConfig)
+                        IdentityProviderManager.getInstance().getIdPByName(idp.getIdentityProviderName(), tenantDomain)
+                                .getDefaultAuthenticatorConfig();
+
+                if (config != null) {
+                    return FrameworkServiceDataHolder.getInstance().getAuthenticatorAdapterService()
+                            .getFederatedAuthenticatorAdapter(config);
+                }
+            }
+
+            throw new FrameworkException(String.format(
+                    "The authenticator %s not found for the user defined authenticator: %s", authenticatorName));
+        } catch (AuthenticatorMgtException | IdentityProviderManagementException e) {
+            throw new FrameworkException(String.format(
+                    "An error occurred when retrieving user defined authenticator: %s", authenticatorName), e);
+        }
+    }
 }

components/authentication-framework/org.wso2.carbon.identity.application.authentication.framework/src/main/java/org/wso2/carbon/identity/application/authentication/framework/internal/FrameworkServiceComponent.java

@@ -38,6 +38,7 @@
 import org.wso2.carbon.identity.application.authentication.framework.AuthenticationDataPublisher;
 import org.wso2.carbon.identity.application.authentication.framework.AuthenticationFlowHandler;
 import org.wso2.carbon.identity.application.authentication.framework.AuthenticationMethodNameTranslator;
+import org.wso2.carbon.identity.application.authentication.framework.AuthenticatorAdapterService;
 import org.wso2.carbon.identity.application.authentication.framework.FederatedApplicationAuthenticator;
 import org.wso2.carbon.identity.application.authentication.framework.JsFunctionRegistry;
 import org.wso2.carbon.identity.application.authentication.framework.LocalApplicationAuthenticator;
@@ -1109,4 +1110,24 @@ protected void unsetRoleManagementServiceV2(RoleManagementService roleManagement
         FrameworkServiceDataHolder.getInstance().setRoleManagementServiceV2(null);
         log.debug("RoleManagementServiceV2 unset in FrameworkServiceComponent bundle.");
     }
+
+    /* TODO: The cardinality is set to OPTIONAL until AuthenticatorAdapterService implements. Update it to MANDATORY,
+        one adapter service implementation done. */
+    @Reference(
+            name = "org.wso2.carbon.identity.application.authentication.framework.AuthenticatorAdapterService",
+            service = org.wso2.carbon.identity.application.authentication.framework.AuthenticatorAdapterService.class,
+            cardinality = ReferenceCardinality.OPTIONAL,
+            policy = ReferencePolicy.DYNAMIC,
+            unbind = "unsetAuthenticatorAdapterService")
+    protected void setAuthenticatorAdapterService(AuthenticatorAdapterService adapterService) {
+
+        FrameworkServiceDataHolder.getInstance().setAuthenticatorAdapterService(adapterService);
+        log.debug("AuthenticatorAdapterService set in FrameworkServiceComponent bundle.");
+    }
+
+    protected void unsetAuthenticatorAdapterService(AuthenticatorAdapterService adapterService) {
+
+        FrameworkServiceDataHolder.getInstance().setAuthenticatorAdapterService(adapterService);
+        log.debug("AuthenticatorAdapterService unset in FrameworkServiceComponent bundle.");
+    }
 }

components/authentication-framework/org.wso2.carbon.identity.application.authentication.framework/src/main/java/org/wso2/carbon/identity/application/authentication/framework/internal/FrameworkServiceDataHolder.java

@@ -26,6 +26,7 @@
 import org.wso2.carbon.identity.application.authentication.framework.ApplicationAuthenticator;
 import org.wso2.carbon.identity.application.authentication.framework.AuthenticationDataPublisher;
 import org.wso2.carbon.identity.application.authentication.framework.AuthenticationMethodNameTranslator;
+import org.wso2.carbon.identity.application.authentication.framework.AuthenticatorAdapterService;
 import org.wso2.carbon.identity.application.authentication.framework.JsFunctionRegistry;
 import org.wso2.carbon.identity.application.authentication.framework.ServerSessionManagementService;
 import org.wso2.carbon.identity.application.authentication.framework.config.loader.SequenceLoader;
@@ -102,6 +103,7 @@ public class FrameworkServiceDataHolder {
     private String requireCode = "";
     private String secretsCode = StringUtils.EMPTY;
     private boolean userSessionMappingEnabled;
+    private AuthenticatorAdapterService authenticatorAdapterService;
 
     /*
     This property restricts unnecessary user local search during federated authentication flow for authentication
@@ -827,4 +829,25 @@ public void setRoleManagementServiceV2(RoleManagementService roleManagementServi
 
         this.roleManagementServiceV2 = roleManagementServiceV2;
     }
+
+    /**
+     * Set {@link AuthenticatorAdapterService}.
+     *
+     * @param authenticatorAdapterService   Instance of {@link AuthenticatorAdapterService}.
+     */
+    public void setAuthenticatorAdapterService(AuthenticatorAdapterService authenticatorAdapterService) {
+
+        this.authenticatorAdapterService = authenticatorAdapterService;
+    }
+
+    /**
+     * Get {@link AuthenticatorAdapterService}.
+     *
+     * @return Instance of {@link AuthenticatorAdapterService}.
+     */
+    public AuthenticatorAdapterService getAuthenticatorAdapterService() {
+
+        return authenticatorAdapterService;
+    }
+
 }