使用HTTP Token建立執行SSO驗證的Flash Builder應用程式

本檔案中的範例和範例僅適用於JEE環境上的AEM Forms。

您可以使用Flash Builder建立用戶端應用程式，該程式會使用HTTP Token執行單一登入(SSO)驗證。 例如，假設您使用Flash Builder建立基於Web的應用程式。 接下來，假設應用程式包含不同的檢視，其中每個檢視會叫用不同的AEM Forms操作。 您可以建立登入頁面，讓使用者驗證一次，而不必逐一驗證Forms作業的使用者。 一旦驗證，用戶便能夠調用多個操作而無需再次驗證。 例如，如果使用者已登入Workspace(或其他Forms應用程式)，則使用者不需要再次驗證。

雖然用戶端應用程式包含執行SSO驗證所需的應用程式邏輯，但AEM Forms使用者管理會執行實際的使用者驗證。 要使用HTTP令牌對用戶進行身份驗證，客戶端應用程式將調用Authentication Manager服務的authenticateWithHTTPToken操作。 「使用者管理」可使用HTTP代號來驗證使用者。 若是後續對AEM Forms進行的遠端或Web服務呼叫，您不需要傳遞驗證憑證。

使用者透過SSO驗證後，會叫用下列名為MyApplication/EncryptDocument的AEM Forms短期處理程式。 （有關此進程的資訊，如其輸入值和輸出值，請參閱短期進程示例。）

使用Flash Builder構建的客戶端應用程式與在/um/login和/um/logout配置的用戶管理器的安全servlet交互。 也就是說，客戶端應用程式在啟動期間向/um/login URL發送請求，以確定用戶的狀態。 然後，使用者管理員會以使用者狀態回應。 客戶端應用程式和用戶管理器安全servlet使用HTTP進行通信。

請求格式

安全servlet需要下列輸入變數：

• um_no_redirect — 此值必須 true是。此變數會隨著對User Manager安全servlet提出的所有請求一起提供。 它還幫助安全servlet區分來自flex客戶端或其他Web應用程式的傳入請求。
• j_username — 此值是登入表單中提供之使用者的登入識別碼值。
• j_password — 此值是登錄表單中提供的用戶的相應密碼。

j_password值僅是憑據請求的必需值。 如果未指定密碼值，則安全servlet將檢查以確定您使用的帳戶是否已經驗證。 如果是，您可以繼續；不過，安全servlet不會再驗證您。

回應格式

在/um/login配置的安全servlet使用URLVariables格式進行響應。 在此格式中，內容類型的輸出為文本/純文字檔案。 輸出包含以&字元分隔的名稱值對。 回應包含下列變數：

• authenticated — 值為 true 或 false。

• authstate — 此值可包含下列其中一個值：

  • CREDENTIAL_CHALLENGE — 此狀態表示用戶管理員無法通過任何方式確定用戶的身份。為了進行驗證，需要用戶的用戶名和密碼。
  • SPNEGO_CHALLENGE — 此狀態視為 CREDENTIAL_CHALLENGE。
  • COMPLETE — 此狀態表示用戶管理器能夠驗證用戶。
  • FAILED — 此狀態表示用戶管理器無法驗證用戶。作為對此狀態的響應，flex客戶端可向用戶顯示錯誤消息。
  • LOGGED_OUT — 此狀態表示用戶已成功註銷。

• assertionid — 如果狀態為， COMPLETE 則會包含使用者的 assertionId 值。客戶端應用程式可獲取用戶的AuthResult。

登入程式

當客戶端應用程式啟動時，可以向/um/login安全servlet發出POST請求。 例如， https://<your_serverhost>:<your_port>/um/login?um_no_redirect=true。 當請求到達「使用者管理員」安全servlet時，會執行下列步驟：

1. 它會尋找名為lcAuthToken的Cookie。 如果使用者已登入其他Forms應用程式，則此Cookie會存在。 如果找到Cookie，則會驗證其內容。
2. 如果啟用了基於標頭的SSO，則servlet將查找已配置的標頭以確定用戶的標識。
3. 如果啟用了SPNEGO，則Servlet將嘗試啟動SPNEGO並嘗試確定用戶的身份。

如果安全servlet找到與用戶匹配的有效令牌，則安全servlet允許您繼續並使用authstate=COMPLETE進行響應。 否則，安全servlet將使用authstate=CREDENTIAL_CHALLENGE響應。 下列清單說明這些值：

• Case authstate=COMPLETE:指出使用者已通過驗證，且 assertionid 值包含使用者的斷言識別碼。此階段，用戶端應用程式可連線至AEM Forms。 為該URL配置的Servlet可通過調用AuthenticationManager.authenticate(HttpRequestToken)方法來獲取用戶的AuthResult。 AuthResult實例可以建立用戶管理器上下文並將其儲存在會話中。
• Case authstate=CREDENTIAL_CHALLENGE:指示安全servlet需要用戶的憑據。作為響應，客戶端應用程式可向用戶顯示登錄螢幕並將獲取的憑據發送到安全servlet（例如https://<your_serverhost>:<your_port>/um/login?um_no_redirect=true&j_username=administrator&j_password=password)）。 如果驗證成功，則安全servlet將使用authstate=COMPLETE響應。

如果驗證仍不成功，則安全servlet將使用authstate=FAILED響應。 要響應此值，客戶端應用程式可以顯示一條消息以再次獲得憑據。

註銷過程

當用戶端應用程式登出時，您可以傳送要求至下列URL:

https://<your_serverhost>:<your_port>/um/logout?um_no_redirect=true

收到此請求時，User Manager安全servlet會刪除lcAuthToken Cookie並使用authstate=LOGGED_OUT回應。 用戶端應用程式收到此值後，應用程式便可執行清除工作。

建立用於使用SSO驗證AEM表單用戶的客戶端應用程式

為了演示如何建立執行SSO驗證的客戶端應用程式，建立了一個示例客戶端應用程式。 下圖顯示用戶端應用程式使用SSO驗證使用者所執行的步驟。

上圖說明在客戶端應用程式啟動時發生的應用程式流程。

1. 客戶端應用程式觸發applicationComplete事件。
2. 會呼叫ISSOManager.singleSignOn。 客戶端應用程式向User Manager安全Servlet發送請求。
3. 如果安全Servlet驗證用戶，則ISSOManager派單SSOEvent.AUTHENTICATION_SUCCESS。 作為回應，用戶端應用程式會顯示主要頁面。 在此示例中，首頁調用名為MyApplication/EncryptDocument的AEM Forms短期進程。
4. 如果安全servlet無法確定用戶是否有效，則應用程式將再次請求用戶憑據。 ISSOManager類分派SSOEvent.AUTHENTICATION_REQUIRED事件。 用戶端應用程式會顯示登入頁面。
5. 登入頁面中提供的憑證會傳送至ISSOManager.login方法。 如果驗證成功，則會導致步驟3。 否則會觸發SSOEvent.AUTHENTICATION_FAILED事件。 用戶端應用程式會顯示登入頁面和適當的錯誤訊息。

建立客戶端應用程式

客戶端應用程式包含以下檔案：

• SSOStandalone.mxml:代表用戶端應用程式的主MXML檔案。（請參閱建立SSOStandalone.mxml檔案。）
• um/ISSOManager.as:公開與單一登入(SSO)相關的操作。（請參閱建立ISSOManager.as檔案。）
• um/SSOEvent.as:會針 SSOEvent 對SSO相關事件發送。（請參閱建立SSOEvent.as檔案。）
• um/SSOManager.as:管理SSO相關操作並分派適當的事件。（請參閱建立SSOManager.as檔案。）
• um/UserManager.as:包含應用程式邏輯，該應用程式邏輯使用其WSDL調用Authentication Manager服務。（請參閱建立UserManager.as檔案。）
• views/login.mxml:代表登入畫面。（請參閱建立login.mxml檔案。）
• views/logout.mxml:代表登出畫面。（請參閱建立logout.mxml檔案。）
• views/progress.mxml:代表進度檢視。（請參閱建立progress.mxml檔案。）
• views/remoting.mxml:表示使用遠程調用名為MyApplication/EncryptDocument的AEM Forms短期進程的視圖。（請參閱建立remoteing.mxml檔案。）

下圖提供用戶端應用程式的視覺表示法。

建立SSOStandalone.mxml檔案

以下代碼表示SSOStandalone.mxml檔案。

 <?xml version="1.0" encoding="utf-8"?>
 <mx:Application
                 layout="absolute"
                 applicationComplete="initApp()"
                 height="400" width="550"
                 xmlns:v="views.*"
                 backgroundColor="#EDE8F0" viewSourceURL="srcview/index.html">
     <mx:Script>
         <![CDATA[
             import mx.utils.URLUtil;
             import um.SSOEvent;
             import mx.core.UIComponent;
             import um.SSOManager;
             import mx.rpc.events.ResultEvent;
             import mx.utils.ObjectUtil;
             import mx.controls.Alert;

             [Bindable]
             private var _serverURL:String;

             private var _ssoManager:SSOManager;

             private var _progress:UIComponent;

             private var _loginPage:UIComponent;

             private function initApp():void{
                 _serverURL = determineServerUrl();
                 _ssoManager = new SSOManager(_serverURL);

                 _ssoManager.addEventListener(SSOEvent.AUTHENTICATION_FAILED,loginHandler);
                 _ssoManager.addEventListener(SSOEvent.AUTHENTICATION_SUCCESS,loginHandler);
                 _ssoManager.addEventListener(SSOEvent.AUTHENTICATION_REQUIRED,loginHandler);
                 _ssoManager.addEventListener(SSOEvent.LOGOUT_COMPLETE,loginHandler);
                 _ssoManager.addEventListener(SSOEvent.AUTHENTICATION_FAULT,loginHandler);

                 trace("[Main] Add the required event handlers for authentication");
                 _ssoManager.singleSignOn();

                 showBusy();
             }

             private function determineServerUrl():String
             {
                 var s:String ;
                 var appUrl:String = Application.application.url;
                 var givenUrl:String  = ExternalInterface.call("serverUrl.toString");
                 trace("[Main] Application url ["+appUrl+"] Given url ["+givenUrl+"]");
                 if(appUrl != null && appUrl.search("^http") != -1){
                     s = appUrl;
                 }
                 if(s == null){
                     s = givenUrl;
                 }
                 if(s== null){
                     s = "https://hiro-xp:8080/";
                 }
                 s = URLUtil.getFullURL(s,"/");
                 trace("[Main] Would be using ["+s+"] as serverUrl");
                 return s;
             }

             private function loginHandler(event:SSOEvent):void
             {
                 trace("[Main] Handling event "+event.type);
                 switch(event.type)
                 {
                     case SSOEvent.AUTHENTICATION_FAILED:
                         viewContent.selectedChild = login;
                         login.showLoginFailed();
                         break;
                     case SSOEvent.AUTHENTICATION_SUCCESS:
                         viewContent.selectedChild = remoting;
                         break;
                     case SSOEvent.AUTHENTICATION_REQUIRED:
                         viewContent.selectedChild = login;
                         break;
                     case SSOEvent.LOGOUT_COMPLETE:
                         viewContent.selectedChild = logout;
                         break;
                     case SSOEvent.AUTHENTICATION_FAULT:
                         Alert.show("Error doing authentication. Root error ["+event.rootEvent+"]","Authentication Fault",Alert.OK);
                 }
             }

             public function get ssoManager():SSOManager
             {
                 return _ssoManager;
             }

             public function showBusy():void
             {
                 viewContent.selectedChild = progress;
             }

             public function get serverUrl():String
             {
                 return _serverURL;
             }

         ]]>
     </mx:Script>
     <mx:ViewStack x="0" y="0" id="viewContent" >
         <v:login id="login" />
         <v:remoting id="remoting"  />
         <v:progress id="progress" />
         <v:logout id="logout"/>
     </mx:ViewStack>
 </mx:Application>

建立ISSOManager.as檔案

以下代碼表示ISSOManager.as檔案。

 package um
 {
     import flash.events.IEventDispatcher;

     /**
      * The <code>ISSOManager</code> expose operations related to Single Sign On (SSO) in AEM Forms
      * environment. The application should register appropriate <code>SSOEvent</code> handlers prior
      * to calling any of the following operations
      */
     public interface ISSOManager extends IEventDispatcher
     {
         /**
          * Tries to validate whether the user has an already existing session or not (SSO Scenarios). The application
          * may call this method during the initialization. In general this call would lead to one of the
          * following events getting dispatched
          * <ul>
          * <li>SSOEvent.AUTHENTICATION_SUCCESS - If a SSO session was found and valid
          * <li>SSOEvent.AUTHENTICATION_REQUIRED - No SSO session was found and as such authentication is required in
          * the form of username and password.
          * <li>SSOEvent.AUTHENTICATION_FAULT - Some error has occured while connecting to the server
          * </ul>
          */
         function singleSignOn():void;

         /**
          * Authenticates the user using username and password. It may lead to one of the following events
          * <ul>
          * <li>SSOEvent.AUTHENTICATION_SUCCESS - The authentication is successful and a session is established
          * <li>SSOEvent.AUTHENTICATION_FAILED - Authentication has failed
          * </ul>
          */
         function login(username:String, password:String):void;

         /**
          * Terminates the current session and logs out the user.
          */
         function logout():void;

         /**
          * Get the assertionId for the logged in user
          */
         function get assertionId():String;
     }
 }

建立SSOEvent.as檔案

以下代碼表示SSOEvent.as檔案。

 package um
 {
     import flash.events.Event;

     /**
      * The <code>SSOEvent</code> is dispatched for SSO related events
      */
     public class SSOEvent extends Event
     {
         /**
          * This type of event would be dispatched when the Authentication process is successful. Authentication
          * might have been done with SSO or username and password. As a response to this event the application
          * can show the welcome page to the user
          * The application may want to perform specific check for permission/role so as to verify the user is allowed.
          * So as a response to this event the application would do those checks and then only show the welcome page
          */
         public static const AUTHENTICATION_SUCCESS:String = "authenticationSuccess";

         /**
          * This type of event would be dispatched when authentication fails using the username, password.
          * As a response to this type of event an application can show an error message to the user.
          * This event would only happen when authentication is done using username and password and NOT in
          * SSO case.
          */
         public static const AUTHENTICATION_FAILED:String = "authenticationFailed";

         /**
          * This type of event would be dispatched when authentication using SSO is not achieved. And due to
          * that we require the user's username and password for authentication. As a response to this event
          * the application can show the login page to the user.
          */
         public static const AUTHENTICATION_REQUIRED:String = "authenticationRequired";

         /**
          * This type of event would be dispatched when logout is complete. As a response to this event the
          * application may show a logout page informing the user that he has been logged out. Or the application
          * can take the user back to login page
          */
         public static const LOGOUT_COMPLETE:String = "logoutComplete";

         /**
          * This type of event would be dispatched when ever there is a problem in doing Authentication. The root cause
          * can be obtained from the <code>rootEvent</code>.
          */
         public static const AUTHENTICATION_FAULT:String = "authenticationFault";

         private var _rootEvent:Event;

         public function SSOEvent(type:String, rootEvent:Event=null)
         {
             super(type,true,false);
             _rootEvent = rootEvent;
         }

         /**
          * The root event. If current event type is <code>AUTHENTICATION_FAULT</code> then it would be an
          * <code>IOErrorEvent</code> in other cases it would be complete event. Its basic use is to extract the root
          * cause in case of an authentication fault.
          */
         public function get rootEvent():Event
         {
             return _rootEvent;
         }
     }
 }

建立SSOManager.as檔案

以下代碼表示SSOManager.as檔案。

 package um
 {
     import flash.events.Event;
     import flash.events.EventDispatcher;
     import flash.events.IOErrorEvent;
     import flash.external.ExternalInterface;
     import flash.net.URLLoader;
     import flash.net.URLLoaderDataFormat;
     import flash.net.URLRequest;
     import flash.net.URLVariables;

     import mx.utils.ObjectUtil;

     /**
      * Manages the SSO related operations and dispatches appropriate events. It would connect to the UM Filter/Servlet
      * at <code>um/login</code> The UM response would be of form of url encoded variables. It would look for
      * <code>authstate</code> value in the response and depending on that it would proceed.
      *
      * <p>If there is an IO_Error while initial attempt to UM then it would assume it as a 401 response. And it would
      * be assumed that SPNEGO based authenticatin is not working and therefore user would be shown a login page.
      */
     public class SSOManager extends EventDispatcher implements ISSOManager
     {
         private static const SSO_URL:String = "um/login";
         private static const SSO_LOGOUT_URL:String = "um/logout";
         private static const AUTH_COOKIE_NAME:String = "lcAuthToken";

         private var _serverUrl:String;
         private var _assertionId:String;

         /**
          * Constructs an SSOManager with the given server url.
          *
          * @param serverUrl - The uri of the server to connect to. it must be without any context path e.g
          * http://localhost:8080/. The SSOManager would directly append the path of UM exposed SSO url to it
          * for its operations
          */
         public function SSOManager(serverUrl:String)
         {
             _serverUrl = serverUrl;
         }

         public function singleSignOn():void
         {
             sendRequest(SSO_URL,true);
         }

         public function login(username:String, password:String):void
         {
             sendRequest(SSO_URL,false,
                 function(request:URLRequest,vars:URLVariables):void
                 {
                     vars.j_username = username;
                     vars.j_password = password;
                 }
             );
         }

         public function logout():void
         {
             sendRequest(SSO_LOGOUT_URL);
         }

         public function get assertionId():String
         {
             return _assertionId;
         }



         /**
          * Connects to the UM security service.
          */
         private function sendRequest(relativeUrl:String,authenticationRequest:Boolean=false, requestProcessor:Function=null):void
         {
             var loader:URLLoader = new URLLoader();
             loader.dataFormat = URLLoaderDataFormat.VARIABLES;
             var request:URLRequest = new URLRequest(_serverUrl + relativeUrl);
             trace("[SSOmanager] Contacting ["+request.url+"]");
             var vars:URLVariables = new URLVariables();
             vars.um_no_redirect = "true";
             request.data = vars;
             if(requestProcessor != null){
                 requestProcessor(request,vars);
             }

             loader.addEventListener(Event.COMPLETE,authHandler);
             //if its an authentication request then only treat io error as a possible 401
             //for others treat them as faults
             if(authenticationRequest){
                 loader.addEventListener(IOErrorEvent.IO_ERROR,httpAuthenticationHandler);
             }else{
                 loader.addEventListener(IOErrorEvent.IO_ERROR,authFaultHandler);
             }
             trace("[SSOmanager] Sending request "+ ObjectUtil.toString(request));
             loader.load(request);
         }

         private function authHandler(event:Event):void
         {
             var loader:URLLoader = URLLoader(event.target);
             var response:URLVariables = URLVariables(loader.data);
             trace("[SSOmanager] Processing response ["+ObjectUtil.toString(response)+"]");
             handleAuthResult(response["authstate"],response);
         }

         /**
          * Handles the IOErrorEvent. Flash would dispatch IOEvent in response to HTTP 401.
          * There is no way to distinguish it from the genuine IOError.
          */
         private function httpAuthenticationHandler(event:IOErrorEvent):void
         {
             trace("[SSOmanager] Processing IOErrorEvent ["+ObjectUtil.toString(event)+"]");
             handleAuthResult("CREDENTIAL_CHALLENGE");

         }

         /**
          * Dispatches appropriate <code>SSOEvent</code> on the basis of the <code>authstate</code>
          * value of the response.
          * The response is url encoded in for of
          * <pre>
          * authenticated=false&authstate=SPNEGO_CHALLENGE
          * </pre>
          * Depending on <code>authstate</code> the SSOEvent is dispatched
          */
         private function handleAuthResult(authState:String,response:URLVariables = null):void
         {
             trace("[SSOmanager] processing state "+authState);
             switch(authState)
             {
                 case "FAILED"  :
                     dispatchEvent(new SSOEvent(SSOEvent.AUTHENTICATION_FAILED));
                     break;
                 case "COMPLETE" :
                     _assertionId = response ? response["assertionid"] : null;
                     dispatchEvent(new SSOEvent(SSOEvent.AUTHENTICATION_SUCCESS));
                     break;
                 case "CREDENTIAL_CHALLENGE" :
                     dispatchEvent(new SSOEvent(SSOEvent.AUTHENTICATION_REQUIRED));
                     break;
                 case "LOGGED_OUT" :
                     dispatchEvent(new SSOEvent(SSOEvent.LOGOUT_COMPLETE));
                     break;
                 default:
                     dispatchEvent(new SSOEvent(SSOEvent.AUTHENTICATION_REQUIRED));
                     break;
             }
         }

         private function authFaultHandler(event:Event):void
         {
             dispatchEvent(new SSOEvent(SSOEvent.AUTHENTICATION_FAULT,event));
         }

     }
 }

建立UserManager.as檔案

以下代碼表示UserManager.as檔案。

 package um
 {
     import flash.events.Event;
     import mx.rpc.soap.WebService;
     import mx.rpc.soap.Operation;
     import mx.rpc.IResponder;
     import mx.rpc.events.FaultEvent;
     import mx.rpc.events.ResultEvent;
     import mx.rpc.soap.LoadEvent;

     public class UserManager
     {
         private var _ssoManager:ISSOManager;
         private var _serverUrl:String;

         public function UserManager(ssoManager:ISSOManager,serverUrl:String)
         {
             _serverUrl = serverUrl;
             _ssoManager = ssoManager;
         }

         public function retrieveAssertion(responder:IResponder):String
         {
             var assertionId:String = _ssoManager.assertionId;
             if(!assertionId)
             {
                 trace("[UserManager] AssertionId not found");
                 return null;
             }

             var ws:WebService = new WebService();
             var wsdl:String = _serverUrl+'soap/services/AuthenticationManagerService?wsdl&lc_version=8.2.1';
             ws.loadWSDL(wsdl);
             ws.addEventListener(LoadEvent.LOAD,
                 function(event:Event):void
                 {
                     trace("[UserManager] WSDL loaded");
                     var authenticate:Operation = ws.authenticateWithHttpToken as Operation;
                     authenticate.resultFormat = "e4x";
                     authenticate.addEventListener(ResultEvent.RESULT,
                         function(event:Event):void
                         {
                             responder.result(event);
                         }
                     );
                     authenticate.send({assertionId:assertionId});
                 }
             );

             ws.addEventListener(FaultEvent.FAULT,
                 function(event:Event):void
                 {
                     responder.fault(event);
                 }
             );
             return null;
         }
     }
 }

建立login.mxml檔案

下列程式碼代表login.mxml檔案。

 <?xml version="1.0" encoding="utf-8"?>
 <mx:Canvas  width="500" height="400">
     <mx:Script>
         <![CDATA[
             import mx.core.Application;
             public function showLoginFailed():void
             {
                 loginMessage.text = "Username or Password incorrect";
             }

             private function doLogin():void
             {
                 Application.application.ssoManager.login(j_username.text,j_password.text);
                 Application.application.showBusy();
             }

         ]]>
     </mx:Script>

     <mx:VBox height="113" width="244" x="128" y="144" horizontalAlign="center" verticalGap="10">
         <mx:HBox width="100%">
             <mx:HBox width="100%" verticalAlign="middle" horizontalAlign="center" height="32">
                 <mx:Label text="Username" fontWeight="bold"/>
                 <mx:TextInput id="j_username"/>
             </mx:HBox>
         </mx:HBox>
         <mx:HBox width="100%" height="33" horizontalAlign="center" horizontalGap="10" verticalAlign="middle">
             <mx:Label text="Password" fontWeight="bold"/>
             <mx:TextInput displayAsPassword="true" id="j_password"/>
         </mx:HBox>
         <mx:Button label="Login" click="doLogin()"/>
     </mx:VBox>
     <mx:Text x="128" y="122" id="loginMessage" width="230" height="14"/>
     <mx:Label x="154" y="65" text="AEM Forms SSO Demo" fontFamily="Georgia" fontSize="20" color="#0A0A0A"/>
 </mx:Canvas>

建立logout.mxml檔案

以下代碼表示logout.mxml檔案。

 <?xml version="1.0" encoding="utf-8"?>
 <mx:Canvas  width="500" height="400">
     <mx:Label x="97" y="188" text="You have successfully logged out from the application"/>

 </mx:Canvas>

建立progress.mxml檔案

以下代碼表示progress.mxml檔案。

 <?xml version="1.0" encoding="utf-8"?>
 <mx:Canvas >
     <mx:Label x="151" y="141" text="Wait...."/>
     <mx:SWFLoader source="LoadingCircle.swf" width="50" height="50" horizontalCenter="0" verticalCenter="0"/>
 </mx:Canvas>

建立remoteing.mxml檔案

以下代碼表示調用MyApplication/EncryptDocument進程的remoteing.mxml檔案。 由於檔案會傳遞至程式，因此負責將安全檔案傳遞至AEM Forms的應用程式邏輯位於此檔案中。 （請參閱使用Remoting傳遞安全文檔以調用進程。）

 <?xml version="1.0" encoding="utf-8"?>
 <mx:Canvas  width="664" height="400" creationComplete="initializeChannelSet()" xmlns:views="views.*">
     <mx:Script>

         <![CDATA[

             import mx.rpc.livecycle.DocumentReference;
             import flash.net.FileReference;
             import flash.net.URLRequest;
             import flash.events.Event;
             import flash.events.DataEvent;
             import mx.messaging.ChannelSet;
             import mx.messaging.channels.AMFChannel;
             import mx.rpc.events.ResultEvent;
             import mx.collections.ArrayCollection;
             import mx.rpc.AsyncToken;
             import um.UserManager;
             import mx.rpc.events.ResultEvent;
             import mx.rpc.events.FaultEvent;
             import mx.core.Application;
             import mx.rpc.Responder;
             import mx.utils.ObjectUtil;

             // Classes used in file retrieval
             private var fileRef:FileReference = new FileReference();
             private var docRef:DocumentReference = new DocumentReference();
             private var parentResourcePath:String = "/";
             //private var serverPort:String = "'[server]:[port]'";
             private var serverPort:String = "'[server]:[port]'";
             private var now1:Date;
             private var userManager:UserManager;

             // Define a ChannelSet object.
             public var cs:ChannelSet;

             // Holds information returned from AEM Forms
             [Bindable]
             public var progressList:ArrayCollection = new ArrayCollection();


             // Set up channel set to invoke AEM Forms.
             // This must be done before calling any service or process, but only
             // once for the entire application.
             private function initializeChannelSet():void {
                 cs = new ChannelSet();
                 cs.addChannel(new AMFChannel("remoting-amf", "https://" + serverPort + "/remoting/messagebroker/amf"));
                 EncryptDocument.channelSet = cs;

             //Get the user that is authenticated
             userManager = new UserManager(Application.application.ssoManager,Application.application.serverUrl);
             userManager.retrieveAssertion(
                     new mx.rpc.Responder(
                         function(event:ResultEvent):void
                         {
                             var name:String = XML(event.currentTarget.lastResult)..*::authenticatedUser.*::userid.text();
                             username.text = "Welcome "+name;
                         },
                         function(event:FaultEvent):void
                         {
                             mx.controls.Alert.show(event.fault.faultString,'Error')
                         }
                     )
                 );

             }

             // Call this method to upload the file.
             // This creates a file picker and lets the user select a PDF file to pass to the EncryptDocument process.
             private function uploadFile():void {
                 fileRef.addEventListener(Event.SELECT, selectHandler);
                 fileRef.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA,completeHandler);
                 fileRef.browse();
             }

             // Gets called for selected file. Does the actual upload via the file upload servlet.
             private function selectHandler(event:Event):void {
                 var authTokenService:RemoteObject = new RemoteObject("LC.FileUploadAuthenticator");
                 authTokenService.addEventListener("result", authTokenReceived);
                 authTokenService.channelSet = cs;
                 authTokenService.getFileUploadToken();
             }

             private function authTokenReceived(event:ResultEvent):void
             {
                 var token:String = event.result as String;
                 var request:URLRequest = DocumentReference.constructRequestForUpload("https://hiro-xp:8080", token);

                 try
                 {
                     fileRef.upload(request);
                 }
                 catch (error:Error)
                 {
                     trace("Unable to upload file.");
                 }
             }

             // Called once the file is completely uploaded.
             private function completeHandler(event:DataEvent):void {

                 // Set the docRefs url and referenceType parameters
                 docRef.url = event.data as String;
                 docRef.referenceType=DocumentReference.REF_TYPE_URL;
                 executeInvokeProcess();
             }

             //This method invokes the EncryptDocument process
             public function executeInvokeProcess():void {
                 //Create an Object to store the input value for the EncryptDocument process
                 now1 = new Date();

                 var params:Object = new Object();
                 params["inDoc"]=docRef;

                 // Invoke the EncryptDocument process
                 var token:AsyncToken;
                 token = EncryptDocument.invoke(params);
                 token.name = name;
             }


             // This method handles a successful conversion invocation
             public function handleResult(event:ResultEvent):void
             {

                 //Retrieve information returned from the service invocation
                 var token:AsyncToken = event.token;
                 var res:Object = event.result;
                 var dr:DocumentReference = res["outDoc"] as DocumentReference;
                 var now2:Date = new Date();

                 // These fields map to columns in the DataGrid
                 var progObject:Object = new Object();
                 progObject.filename = token.name;
                 progObject.timing = (now2.time - now1.time).toString();
                 progObject.state = "Success";
                 progObject.link = "<a href='" + dr.url + "'> open </a>";
                 progressList.addItem(progObject);
             }


             private function resultHandler(event:ResultEvent):void {
             // Do anything else here.

             }

             private function logout():void
             {
                 Application.application.ssoManager.logout();
                 Application.application.showBusy();
             }


         ]]>

     </mx:Script>

     <mx:RemoteObject id="EncryptDocument" destination="MyApplication/EncryptDocument" result="resultHandler(event);">
             <mx:method name="invoke" result="handleResult(event)"/>
     </mx:RemoteObject>


     <!--//This consists of what is displayed on the webpage-->
     <mx:Panel id="lcPanel" title="EncryptDocument  (Deprecated for AEM forms) AEM Forms Remoting Example"
           height="25%" width="25%" paddingTop="10" paddingLeft="10" paddingRight="10"
           paddingBottom="10">
         <mx:Label width="100%" color="blue"
                   id="username"/>

         <mx:DataGrid x="10" y="0" width="500" id="idProgress" editable="false"
                          dataProvider="{progressList}" height="231" selectable="false" >
         <mx:columns>
                 <mx:DataGridColumn headerText="Filename" width="200" dataField="filename" editable="false"/>
                 <mx:DataGridColumn headerText="State" width="75" dataField="state" editable="false"/>
                 <mx:DataGridColumn headerText="Timing" width="75" dataField="timing" editable="false"/>
                 <mx:DataGridColumn headerText="Click to Open" dataField="link" editable="false" >
                 <mx:itemRenderer>

                         <mx:Component>
                         <mx:Text x="0" y="0" width="100%" htmlText="{data.link}"/>
                         </mx:Component>
                     </mx:itemRenderer>
             </mx:DataGridColumn>
         </mx:columns>
     </mx:DataGrid>
     <mx:Button label="Select File" click="uploadFile()" />
     <mx:Button label="Logout"  click="logout()" />
     </mx:Panel>
 </mx:Canvas>

其他資訊

以下各節提供了描述客戶端應用程式與User Manager安全servlet之間通信的其他詳細資訊。

發生新身份驗證

在此情況下，使用者會嘗試從用戶端應用程式首次登入AEM Forms。 （不存在與用戶相關的先前會話。） 在applicationComplete事件中，調用SSOManager.singleSignOn方法，向用戶管理器發送請求。

GET /um/login?um%5Fno%5Fredirect=true HTTP/1.1

User Manager安全servlet使用以下值進行響應：

HTTP/1.1 200 OK

authenticated=false&authstate=CREDENTIAL_CHALLENGE

作為此值的回應，會發送SSOEvent.AUTHENTICATION_REQUIRED值。 因此，用戶端應用程式會向使用者顯示登入畫面。 憑證會提交回使用者管理員安全servlet。

GET /um/login?um%5Fno%5Fredirect=true&j%5Fusername=administrator&j%5Fpassword=password HTTP/1.1

User Manager安全servlet使用以下值進行響應：

 HTTP/1.1 200 OK
 Set-Cookie: lcAuthToken=53630BC8-F6D4-F588-5D5B-4668EFB2EC7A; Path=/
 authenticated=true&authstate=COMPLETE&assertionid=53630BC8-F6D4-F588-5D5B-4668EFB2EC7A

因此，會發送authstate=COMPLETE the SSOEvent.AUTHENTICATION_SUCCESS。 如有必要，客戶端應用程式可執行進一步處理。 例如，可以建立記錄來追蹤使用者驗證的日期和時間。

已驗證用戶

在此情況下，使用者已登入AEM Forms，然後導覽至用戶端應用程式。 在啟動期間，客戶端應用程式連接到User Manager安全servlet。

 GET /um/login?um%5Fno%5Fredirect=true HTTP/1.1
 Cookie: JSESSIONID=A4E0BCC2DD4BCCD3167C45FA350BD72A; lcAuthToken=53630BC8-F6D4-F588-5D5B-4668EFB2EC7A

由於使用者已通過驗證，因此使用者管理員Cookie會存在，並傳送至使用者管理員安全Servlet。 Servlet接著會取得assertionId值並驗證其是否有效。 如果有效，則返回authstate=COMPLETE。 否則，返回authstate=CREDENTIAL_CHALLENGE。 以下是典型的回應：

 HTTP/1.1 200 OK
        authenticated=true&authstate=COMPLETE&assertionid=53630BC8-F6D4-F588-5D5B-4668EFB2EC7A

在此情況下，使用者不會顯示登入畫面，而會直接帶至歡迎畫面。

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