223 lines
9.2 KiB
C#
223 lines
9.2 KiB
C#
using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Mvc.Filters;
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using Microsoft.Net.Http.Headers;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Serialization;
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using Sarand.BusinessMgr.Net.Core.Web.App;
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using Sarand.BusinessMgr.Net.Standard.Base.App;
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using Sarand.BusinessMgr.Net.Standard.Base.Data;
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using Sarand.BusinessMgr.Net.Standard.Base.Mgr.Control;
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using Sarand.Net.Standard.Base.App;
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using Sarand.Net.Standard.Base.Core;
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using Sarand.Net.Standard.Base.Dbas;
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using Sarand.Net.Standard.Base.Helpers;
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using Sarand.Net.Standard.Base.Utils;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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namespace Sarand.BusinessMgr.Net.Core.Web.Components
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{
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//=======================================================================
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public abstract class SbmController_Web : SbmController_Base
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{
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//-------------------------------------------------------------------
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// Data members.
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private SbmInternals_Control internals_Control;
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//-------------------------------------------------------------------
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// Protected construction.
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protected SbmController_Web(SbmLocaliser localiser) : base(localiser)
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{
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// Initialise console (debug) logging listener.
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//if (Directory.Exists(App.LoggingRootFolder) && SbmSystem.DebugMode)
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// SbmConsoleListener.ConfigureDebugListener(App.LoggingRootFolder);
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if (DebugMode) SaLogger.Trace($"{GetType().Name}.CTR");
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (internals_Control != null) internals_Control.Dispose(); internals_Control = null;
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}
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base.Dispose(disposing);
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}
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//-------------------------------------------------------------------
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// Properties.
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protected override SbmSessionContext SessionContext { get { return SessionData?.SessionContext ?? null; } }
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// Control database.
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protected SbmInternals_Control Internals_Control { get { if (internals_Control == null) { internals_Control = new SbmInternals_Control(); } return internals_Control; } }
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protected SbmcAccountMgr ControlAccountMgr { get { return Internals_Control.ControlAccountMgr; } }
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protected SbmcInstanceMgr ControlInstanceMgr { get { return Internals_Control.ControlInstanceMgr; } }
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protected SbmcItemMgr ControlItemMgr { get { return Internals_Control.ControlItemMgr; } }
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//-------------------------------------------------------------------
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// Action execution events.
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//-------------------------------------------------------------------
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public override void OnActionExecuting(ActionExecutingContext filterContext)
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{
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//if (DebugMode) SaLogger.Debug($"{SysUtil.Fn}" + (ViewData.Model != null ? " Model: " + ViewData.Model : ""));
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// Refreh model properties.
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SbmModel_Base baseModel = ViewData.Model as SbmModel_Base;
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RefreshModel(baseModel);
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base.OnActionExecuting(filterContext);
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}
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public override void OnActionExecuted(ActionExecutedContext filterContext)
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{
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//if (DebugMode) SaLogger.Debug($"{SysUtil.Fn}" + (ViewData.Model != null ? " Model: " + ViewData.Model : ""));
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// Refreh model properties.
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SbmModel_Base baseModel = ViewData.Model as SbmModel_Base;
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RefreshModel(baseModel);
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// Store session data if present - as potentially modfied.
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if (SessionData != null)
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{
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// Most actions will store the session data in case it's been modified.
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// Some actions (eg. score password) don't need to.
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if (StoreSessionData)
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{
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string sessionDataJson = JsonConvert.SerializeObject(SessionData, SessionDataJsonSerializerSettings);
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HttpContext.Session.Set(SessionStorage.SessionKey_SessionData, SessionStorage.sessionDataEncoding.GetBytes(sessionDataJson));
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}
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}
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else HttpContext.Session.Remove(SessionStorage.SessionKey_SessionData);
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// Response headers.
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if (baseModel != null && baseModel.ProhibitCache)
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{
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if (Response.Headers.ContainsKey(HeaderNames.CacheControl))
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Response.Headers.Remove(HeaderNames.CacheControl);
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Response.Headers.Append(HeaderNames.CacheControl, "no-cache, no-store, must-revalidate");
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Response.Headers.Append(HeaderNames.Pragma, "no-cache");
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Response.Headers.Append(HeaderNames.Expires, "0");
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}
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base.OnActionExecuted(filterContext);
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}
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//-------------------------------------------------------------------
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// Model.
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protected virtual void RefreshModel(SbmModel_Base model)
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{
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if (model == null) return;
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// Session data.
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model.SetController(this);
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model.SetSessionData(SessionData);
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// Redirect locations.
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model.RedirectLocation.Base = GetRedirectLocation(RedirectLocation.WebAppBase);
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model.RedirectLocation.Home = GetRedirectLocation(RedirectLocation.WebAppHome);
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model.RedirectLocation.Home_SessionExpired = GetRedirectLocation(RedirectLocation.WebAppHome_SessionExpired);
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}
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//-------------------------------------------------------------------
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// Online encryption parameters.
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//-------------------------------------------------------------------
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// Portal Request Password encryption key is defined in
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// the base Controller so that they can be shared with the Control application.
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protected static string Base64Key_RequestPassword_Portal { get; } = SacsEncryptionHelper.EncodePlainKey("[5Abus1neSSmGR~Request#Password}", SacsEncryptionHelper.KeyLength);
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//-------------------------------------------------------------------
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// Session.
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//-------------------------------------------------------------------
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protected bool ValidUserSession { get { return SessionData?.ValidUser ?? false; } }
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protected DbUpdateInfo DbUpdateInfo { get { return SessionData?.DbUpdateInfo ?? new DbUpdateInfo(null, "", SacsSystem.ComputerName); } }
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// Referrer.
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protected string Referer { get { return Request.Headers["Referer"].ToString(); } }
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protected bool ValidReferer { get { return !Referer.IsEmpty(); } }
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/// <summary>Store session data, eg. to start a new user session on sign-in.</summary>
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protected bool SetSessionData(SbmSessionData_Web sessionData)
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{
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if (sessionStorage.SessionData != null) return false;
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sessionStorage.SessionData = sessionData;
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return true;
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}
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protected void ClearSessionData()
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{
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if (HttpContext.Session.IsAvailable)
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HttpContext.Session.Clear();
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sessionStorage.SessionData = null;
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}
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//-------------------------------------------------------------------
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// Session storage.
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public class SessionStorage
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{
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public SbmSessionData_Web SessionData { get; set; }
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public static string SessionKey_SessionData { get; } = "SbmSessionData";
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public static Encoding sessionDataEncoding { get; } = Encoding.UTF8;
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//JSON Serialisation.
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public class SbmSessionDataContractResolver : DefaultContractResolver
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{
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// To allow private properties to be deserialised.
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// NB Only applies to top level properties in the serialised object.
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protected override List<MemberInfo> GetSerializableMembers(Type objectType)
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{
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var flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
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MemberInfo[] fields = objectType.GetFields(flags);
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return fields
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.Concat(objectType.GetProperties(flags).Where(propInfo => propInfo.CanWrite))
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.ToList();
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}
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protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
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{
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return base.CreateProperties(type, MemberSerialization.Fields);
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}
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};
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public static JsonSerializerSettings JsonSerialisationSettings = new JsonSerializerSettings
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{
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NullValueHandling = NullValueHandling.Ignore
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};
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public static JsonSerializerSettings JsonDeserialisationSettings = new JsonSerializerSettings
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{
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ContractResolver = new SbmSessionDataContractResolver(),
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// Force all deserialised objects to be replaced - to avoid proxy lists not populating.
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ObjectCreationHandling = ObjectCreationHandling.Replace,
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NullValueHandling = NullValueHandling.Ignore
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};
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}
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private readonly SessionStorage sessionStorage = new SessionStorage();
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public static JsonSerializerSettings SessionDataJsonSerializerSettings { get { return SessionStorage.JsonSerialisationSettings; } }
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public static JsonSerializerSettings SessionDataJsonDeserializerSettings { get { return SessionStorage.JsonDeserialisationSettings; } }
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//-------------------------------------------------------------------
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public SbmSessionData_Web SessionData
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{
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get
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{
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try
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{
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// Retrieve session data if not already in controller.
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if (sessionStorage.SessionData == null)
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{
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byte[] sessionDataBytes = null;
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HttpContext.Session.TryGetValue(SessionStorage.SessionKey_SessionData, out sessionDataBytes);
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if (sessionDataBytes != null)
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{
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string sessionDataJson = SessionStorage.sessionDataEncoding.GetString(sessionDataBytes);
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sessionStorage.SessionData = DeserializeSessionData(sessionDataJson);
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}
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}
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return sessionStorage.SessionData;
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}
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catch (Exception exc)
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{
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SaLogger.Warn($"{SysUtil.Fn} {ExceptionUtil.GetErrorStateMessage(exc)}{exc.GetStackEntries().Concat("", "\n\t")}");
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}
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return null;
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}
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}
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protected abstract SbmSessionData_Web DeserializeSessionData(string sessionDataJson);
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//-------------------------------------------------------------------
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}
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//=======================================================================
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}
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