增加SSO逻辑

OpenAuth.App/SSO/SSOAuthAttribute.cs

@@ -0,0 +1,68 @@
+using System.Web;
+using System.Web.Mvc;
+
+namespace OpenAuth.App.SSO
+{
+    public class SSOAuthAttribute : ActionFilterAttribute
+    {
+        public const string Token = "Token";
+        public const string SessionUserName = "SessionUserName";
+
+        public override void OnActionExecuting(ActionExecutingContext filterContext)
+        {
+            var token = "";
+            var cookieSessionUserName = "";
+
+            //Token by QueryString
+            var request = filterContext.HttpContext.Request;
+            if (request.QueryString[Token] != null)
+            {
+                token = request.QueryString[Token];
+                filterContext.HttpContext.Response.Cookies.Add(new HttpCookie(Token, token));
+            }
+            else if (request.Cookies[Token] != null)  //从Cookie读取Token
+            {
+                token = request.Cookies[Token].Value;
+            }
+
+            //SessionUserName by QueryString
+            if (request.QueryString[SessionUserName] != null)
+            {
+                cookieSessionUserName = request.QueryString[SessionUserName];
+                filterContext.HttpContext.Response.Cookies.Add(new HttpCookie(SessionUserName, cookieSessionUserName));
+            }
+            else if (request.Cookies[SessionUserName] != null)  //从Cookie读取SessionUserName
+            {
+                cookieSessionUserName = request.Cookies[SessionUserName].Value;
+            }
+            
+            if (string.IsNullOrEmpty(token))
+            {
+                //直接登录
+                filterContext.Result = SsoLoginResult(cookieSessionUserName);
+            }
+            else
+            {
+                //验证
+                if (AuthUtil.CheckLogin(token, request.RawUrl) == false)
+                {
+                    //会话丢失，跳转到登录页面
+                    filterContext.Result = SsoLoginResult(cookieSessionUserName);
+                }
+            }
+
+            base.OnActionExecuting(filterContext);
+        }
+
+        private static ActionResult SsoLoginResult(string username)
+        {
+            //跳转到SSO站点登陆
+            //return new RedirectResult(string.Format("{0}/sso/login?appkey={1}&username={2}",
+            //        ConfigurationManager.AppSettings["SSOPassport"],
+            //        ConfigurationManager.AppSettings["SSOAppKey"],
+            //        username));
+
+            return new RedirectResult("/Login/Index");
+        }
+    }
+}