Implemented dynamic-client-authentication unregister function

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/RegistrationService.java

@@ -19,6 +19,7 @@
 package org.wso2.carbon.identity.oauth.extension;
 
 import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
 import javax.ws.rs.POST;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
@@ -31,4 +32,7 @@ public interface RegistrationService {
     @POST
     Response register(RegistrationProfile profile);
 
+    @DELETE
+    Response unregister(UnregistrationProfile profile);
+
 }

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/UnregistrationProfile.java

@@ -0,0 +1,51 @@
+/*
+* Copyright (c) 2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+*
+* Licensed 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.oauth.extension;
+
+/**
+ * This bean class represents the data that are required to unregister
+ * the oauth application.
+ */
+public class UnregistrationProfile {
+
+    private String applicationName;
+    private String consumerKey;
+    private String userId;
+
+    public String getApplicationName() {
+        return applicationName;
+    }
+
+    public void setApplicationName(String applicationName) {
+        this.applicationName = applicationName;
+    }
+
+    public String getConsumerKey() {
+        return consumerKey;
+    }
+
+    public void setConsumerKey(String consumerKey) {
+        this.consumerKey = consumerKey;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+}

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/impl/ClientRegistrationServiceImpl.java

@@ -39,10 +39,12 @@ import org.wso2.carbon.identity.oauth.extension.ApplicationConstants;
 import org.wso2.carbon.identity.oauth.extension.OAuthApplicationInfo;
 import org.wso2.carbon.identity.oauth.extension.RegistrationProfile;
 import org.wso2.carbon.identity.oauth.extension.RegistrationService;
+import org.wso2.carbon.identity.oauth.extension.UnregistrationProfile;
 import org.wso2.carbon.utils.multitenancy.MultitenantConstants;
 import org.wso2.carbon.utils.multitenancy.MultitenantUtils;
 
 import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
 import javax.ws.rs.POST;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
@@ -75,6 +77,22 @@ public class ClientRegistrationServiceImpl implements RegistrationService {
         }
     }
 
+    @DELETE
+    @Override
+    public Response unregister(UnregistrationProfile profile) {
+        String applicationName = profile.getApplicationName();
+        String consumerKey = profile.getConsumerKey();
+        String userId = profile.getUserId();
+        try {
+            this.unregisterApplication(userId, applicationName, consumerKey);
+            return Response.status(Response.Status.ACCEPTED).build();
+        } catch (APIManagementException e) {
+            String msg = "Error occurred while unregistering client '" + applicationName + "'";
+            log.error(msg, e);
+            return Response.serverError().entity(msg).build();
+        }
+    }
+
 
     private OAuthApplicationInfo registerApplication(RegistrationProfile profile) throws APIManagementException {
         OAuthApplicationInfo oAuthApplicationInfo = new OAuthApplicationInfo();
@@ -232,4 +250,45 @@ public class ClientRegistrationServiceImpl implements RegistrationService {
         return null;
     }
 
+    public void unregisterApplication(String userId, String applicationName, String consumerKey)
+            throws APIManagementException {
+
+        String tenantDomain = MultitenantUtils.getTenantDomain(userId);
+        String baseUser = CarbonContext.getThreadLocalCarbonContext().getUsername();
+        String userName = MultitenantUtils.getTenantAwareUsername(userId);
+
+        PrivilegedCarbonContext.startTenantFlow();
+        PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(tenantDomain, true);
+        PrivilegedCarbonContext.getThreadLocalCarbonContext().setUsername(userName);
+
+        if (userId == null || userId.isEmpty()) {
+            throw new APIManagementException("Error occurred while unregistering Application: userId cannot be null/empty");
+        }
+        try {
+            OAuthAdminService oAuthAdminService = new OAuthAdminService();
+            OAuthConsumerAppDTO oAuthConsumerAppDTO = oAuthAdminService.getOAuthApplicationData(consumerKey);
+
+            if (oAuthConsumerAppDTO == null) {
+                throw new APIManagementException("Couldn't retrieve OAuth Consumer Application associated with the " +
+                                                 "given consumer key: " + consumerKey);
+            }
+            oAuthAdminService.removeOAuthApplicationData(consumerKey);
+
+            ApplicationManagementService appMgtService = ApplicationManagementService.getInstance();
+            ServiceProvider createdServiceProvider = appMgtService.getApplication(applicationName);
+
+            if (createdServiceProvider == null) {
+                throw new APIManagementException("Couldn't retrieve Service Provider Application " + applicationName);
+            }
+            appMgtService.deleteApplication(applicationName);
+
+        } catch (IdentityApplicationManagementException e) {
+            APIUtil.handleException("Error occurred while removing ServiceProvider for app " + applicationName, e);
+        } catch (Exception e) {
+            APIUtil.handleException("Error occurred while removing OAuthApp " + applicationName, e);
+        } finally {
+            PrivilegedCarbonContext.endTenantFlow();
+            PrivilegedCarbonContext.getThreadLocalCarbonContext().setUsername(baseUser);
+        }
+    }
 }