// *************************************************************************** // // Delphi MVC Framework // // Copyright (c) 2010-2019 Daniele Teti and the DMVCFramework Team // // https://github.com/danieleteti/delphimvcframework // // Collaborators on this file: Ezequiel Juliano Müller (ezequieljuliano@gmail.com) // // *************************************************************************** // // 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. // // *************************************************************************** } unit MVCFramework; {$I dmvcframework.inc} {$IF IOS} {$MESSAGE Fatal 'This unit is not compilable on iOS'} {$ENDIF} {$RTTI EXPLICIT METHODS(DefaultMethodRttiVisibility) FIELDS(DefaultFieldRttiVisibility) PROPERTIES(DefaultPropertyRttiVisibility)} {$WARNINGS OFF} interface uses System.Classes, System.SysUtils, System.TypInfo, System.IOUtils, System.SyncObjs, System.DateUtils, System.Generics.Collections, System.Rtti, Data.DB, MVCFramework.Session, MVCFramework.DuckTyping, MVCFramework.Logger, MVCFramework.ApplicationSession, MVCFramework.Serializer.Intf, MVCFramework.Serializer.Commons, {$IFDEF WEBAPACHEHTTP} Web.ApacheHTTP, // Apache Support since XE6 http://docwiki.embarcadero.com/Libraries/XE6/de/Web.ApacheHTTP {$ENDIF} // Delphi XE4 (all update) and XE5 (with no update) don't contains this unit. Look for the bug in QC // https://quality.embarcadero.com/browse/RSP-17216 {$IFNDEF MOBILE} // file upload is not supported on mobile Web.ReqMulti, {$ENDIF} Web.HTTPApp, {$IFDEF MSWINDOWS} Web.Win.IsapiHTTP, {$ENDIF} Web.WebReq, LoggerPro, IdGlobal, IdGlobalProtocols, IdURI, MVCFramework.Commons; type TSessionData = TDictionary; TMVCCustomData = TSessionData; TMVCBaseViewEngine = class; TMVCViewEngineClass = class of TMVCBaseViewEngine; MVCBaseAttribute = class(TCustomAttribute) private { private declarations } protected { protected declarations } public { public declarations } end; MVCHTTPMethodsAttribute = class(MVCBaseAttribute) private FMVCHTTPMethods: TMVCHTTPMethods; function GetMVCHTTPMethodsAsString: string; protected { protected declarations } public constructor Create(const AMVCHTTPMethods: TMVCHTTPMethods); property MVCHTTPMethods: TMVCHTTPMethods read FMVCHTTPMethods; property MVCHTTPMethodsAsString: string read GetMVCHTTPMethodsAsString; end; MVCHTTPMethodAttribute = MVCHTTPMethodsAttribute; MVCStringAttribute = class(MVCBaseAttribute) private FValue: string; protected { protected declarations } public constructor Create(const AValue: string); property Value: string read FValue; end; MVCConsumesAttribute = class(MVCStringAttribute) private { private declarations } protected { protected declarations } public { public declarations } end; MVCProducesAttribute = class(MVCStringAttribute) private FCharset: string; protected { protected declarations } public constructor Create(const AValue: string); overload; constructor Create(const AValue: string; const ACharset: string); overload; property Charset: string read FCharset; end; MVCDocAttribute = class(MVCStringAttribute) private { private declarations } protected { protected declarations } public { public declarations } end; MVCPathAttribute = class(MVCBaseAttribute) private FPath: string; protected { protected declarations } public constructor Create(const APath: string); overload; property Path: string read FPath; end; MVCInheritableAttribute = class(MVCBaseAttribute) private { private declarations } protected { protected declarations } public { public declarations } end; TMVCWebRequest = class private FWebRequest: TWebRequest; FSerializers: TDictionary; FBody: string; FContentType: string; FCharset: string; FParamsTable: TMVCRequestParamsTable; FContentMediaType: string; procedure DefineContentType; function GetHeader(const AName: string): string; function GetPathInfo: string; function GetParams(const AParamName: string): string; function GetIsAjax: Boolean; function GetHTTPMethod: TMVCHTTPMethodType; function GetHTTPMethodAsString: string; function GetParamAsInteger(const AParamName: string): Integer; function GetParamAsInt64(const AParamName: string): Int64; function GetFiles: TAbstractWebRequestFiles; function GetParamNames: TArray; function GetParamsMulti(const AParamName: string): TArray; protected { protected declarations } public constructor Create(const AWebRequest: TWebRequest; const ASerializers: TDictionary); destructor Destroy; override; function ClientIp: string; function ClientPrefer(const AMediaType: string): Boolean; function ClientPreferHTML: Boolean; function GetOverwrittenHTTPMethod: TMVCHTTPMethodType; function SegmentParam(const AParamName: string; out AValue: string): Boolean; function SegmentParamsCount: Integer; function ThereIsRequestBody: Boolean; procedure EnsureQueryParamExists(const AName: string); function QueryStringParam(const AName: string): string; function QueryStringParamExists(const AName: string): Boolean; function QueryStringParams: TStrings; function Accept: string; function ContentParam(const AName: string): string; function Cookie(const AName: string): string; function Body: string; function BodyAs: T; function BodyAsListOf: TObjectList; procedure BodyFor(const AObject: T); procedure BodyForListOf(const AObjectList: TObjectList); property RawWebRequest: TWebRequest read FWebRequest; property ContentMediaType: string read FContentMediaType; property ContentType: string read FContentType; property ContentCharset: string read FCharset; property Headers[const AHeaderName: string]: string read GetHeader; property PathInfo: string read GetPathInfo; property ParamsTable: TMVCRequestParamsTable read FParamsTable write FParamsTable; property ParamNames: TArray read GetParamNames; property Params[const AParamName: string]: string read GetParams; property ParamsMulti[const AParamName: string]: TArray read GetParamsMulti; property ParamsAsInteger[const AParamName: string]: Integer read GetParamAsInteger; property ParamsAsInt64[const AParamName: string]: Int64 read GetParamAsInt64; property IsAjax: Boolean read GetIsAjax; property HTTPMethod: TMVCHTTPMethodType read GetHTTPMethod; property HTTPMethodAsString: string read GetHTTPMethodAsString; property Files: TAbstractWebRequestFiles read GetFiles; end; {$IFDEF WEBAPACHEHTTP} TMVCApacheWebRequest = class(TMVCWebRequest) private { private declarations } protected { protected declarations } public { public declarations } end; {$ENDIF} TMVCISAPIWebRequest = class(TMVCWebRequest) private { private declarations } protected { protected declarations } public { public declarations } end; TMVCIndyWebRequest = class(TMVCWebRequest) private { private declarations } protected { protected declarations } public { public declarations } end; TMVCWebResponse = class private FWebResponse: TWebResponse; FFlushOnDestroy: Boolean; function GetCustomHeaders: TStrings; function GetReasonString: string; function GetStatusCode: Integer; function GetCookies: TCookieCollection; function GetContentType: string; function GetLocation: string; function GetContent: string; procedure SetReasonString(const AValue: string); procedure SetStatusCode(const AValue: Integer); procedure SetContentType(const AValue: string); procedure SetLocation(const AValue: string); procedure SetContent(const AValue: string); public constructor Create(const AWebResponse: TWebResponse); destructor Destroy; override; procedure Flush; procedure SetCustomHeader(const AName, AValue: string); procedure SetContentStream(const AStream: TStream; const AContentType: string); property StatusCode: Integer read GetStatusCode write SetStatusCode; property ReasonString: string read GetReasonString write SetReasonString; property ContentType: string read GetContentType write SetContentType; property CustomHeaders: TStrings read GetCustomHeaders; property Cookies: TCookieCollection read GetCookies; property Location: string read GetLocation write SetLocation; property RawWebResponse: TWebResponse read FWebResponse; property Content: string read GetContent write SetContent; property FlushOnDestroy: Boolean read FFlushOnDestroy write FFlushOnDestroy; end; TUser = class private FUserName: string; FRoles: TList; FLoggedSince: TDateTime; FRealm: string; FCustomData: TMVCCustomData; procedure SetLoggedSince(const AValue: TDateTime); procedure SetCustomData(const Value: TMVCCustomData); public constructor Create; destructor Destroy; override; function IsValid: Boolean; procedure Clear; procedure SaveToSession(const AWebSession: TWebSession); function LoadFromSession(const AWebSession: TWebSession): Boolean; property UserName: string read FUserName write FUserName; property Roles: TList read FRoles; property LoggedSince: TDateTime read FLoggedSince write SetLoggedSince; property Realm: string read FRealm write FRealm; property CustomData: TMVCCustomData read FCustomData write SetCustomData; end; TWebContext = class private FRequest: TMVCWebRequest; FResponse: TMVCWebResponse; FConfig: TMVCConfig; FSerializers: TDictionary; FIsSessionStarted: Boolean; FSessionMustBeClose: Boolean; FLoggedUser: TUser; FData: TDictionary; FWebSession: TWebSession; function GetWebSession: TWebSession; function GetLoggedUser: TUser; function GetParamsTable: TMVCRequestParamsTable; procedure SetParamsTable(const AValue: TMVCRequestParamsTable); protected procedure Flush; virtual; procedure BindToSession(const ASessionId: string); function SendSessionCookie(const AContext: TWebContext): string; function AddSessionToTheSessionList(const ASessionType, ASessionId: string; const ASessionTimeout: Integer) : TWebSession; public constructor Create(const ARequest: TWebRequest; const AResponse: TWebResponse; const AConfig: TMVCConfig; const ASerializers: TDictionary); destructor Destroy; override; procedure SessionStart; virtual; procedure SessionStop(const ARaiseExceptionIfExpired: Boolean = True); virtual; function SessionStarted: Boolean; function SessionId: string; function IsSessionStarted: Boolean; function SessionMustBeClose: Boolean; property LoggedUser: TUser read GetLoggedUser; property Request: TMVCWebRequest read FRequest; property Response: TMVCWebResponse read FResponse; property Session: TWebSession read GetWebSession; property Config: TMVCConfig read FConfig; property Data: TDictionary read FData; property ParamsTable: TMVCRequestParamsTable read GetParamsTable write SetParamsTable; end; TMVCEngine = class; TMVCBase = class private FEngine: TMVCEngine; FApplicationSession: TWebApplicationSession; function GetEngine: TMVCEngine; function GetConfig: TMVCConfig; function GetApplicationSession: TWebApplicationSession; procedure SetApplicationSession(const AValue: TWebApplicationSession); procedure SetEngine(const AValue: TMVCEngine); protected class function GetApplicationFileName: string; static; class function GetApplicationFileNamePath: string; static; public property Engine: TMVCEngine read GetEngine write SetEngine; property Config: TMVCConfig read GetConfig; property ApplicationSession: TWebApplicationSession read GetApplicationSession write SetApplicationSession; end; TMVCResponse = class; TMVCErrorResponse = class; IMVCRenderer = interface ['{2FF6DAC8-2F19-4C78-B9EC-A86296847D39}'] procedure Render(const AContent: string); overload; procedure Render(const AObject: TObject); overload; procedure Render(const AObject: TObject; const AOwns: Boolean); overload; procedure Render(const AObject: TObject; const AOwns: Boolean; const AType: TMVCSerializationType); overload; procedure Render(const ACollection: IMVCList); overload; procedure Render(const ACollection: IMVCList; const AType: TMVCSerializationType); overload; procedure Render( const ADataSet: TDataSet; const ASerializationAction: TMVCDatasetSerializationAction = nil ); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ANameCase: TMVCNameCase; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render(const ATextWriter: TTextWriter; const AOwns: Boolean = True); overload; procedure Render(const AStream: TStream; const AOwns: Boolean = True); overload; procedure Render(const AErrorCode: Integer; const AErrorMessage: string; const AErrorClassName: string = ''); overload; procedure Render(const AException: Exception; AExceptionItems: TList = nil; const AOwns: Boolean = True); overload; procedure Render(const AResponse: TMVCResponse; const AOwns: Boolean = True); overload; // SSE Support procedure RenderSSE(const EventID: string; const EventData: string; EventName: string = ''; const Retry: Integer = TMVCConstants.SSE_RETRY_DEFAULT); procedure SendStream(const AStream: TStream; const AOwns: Boolean = True; const ARewind: Boolean = False); procedure SendFile(const AFileName: string); procedure RenderResponseStream; function ResponseStream: TStringBuilder; procedure Redirect(const AUrl: string); procedure ResponseStatus(const AStatusCode: Integer; const AReasonString: string = ''); // Serializer access function Serializer: IMVCSerializer; overload; function Serializer(const AContentType: string; const ARaiseExcpIfNotExists: Boolean = True) : IMVCSerializer; overload; end; IMVCAuthenticationHandler = interface ['{19B580EA-8A47-4364-A302-EEF3C6207A9F}'] procedure OnRequest(const AContext: TWebContext; const AControllerQualifiedClassName, AActionName: string; var AAuthenticationRequired: Boolean); procedure OnAuthentication(const AContext: TWebContext; const AUserName, APassword: string; AUserRoles: TList; var AIsValid: Boolean; const ASessionData: TDictionary); procedure OnAuthorization(const AContext: TWebContext; AUserRoles: TList; const AControllerQualifiedClassName: string; const AActionName: string; var AIsAuthorized: Boolean); end; TMVCRenderer = class(TMVCBase) protected FContext: TWebContext; FContentCharset: string; FResponseStream: TStringBuilder; public function GetContentType: string; function GetStatusCode: Integer; procedure SetContentType(const AValue: string); procedure SetStatusCode(const AValue: Integer); function GetContext: TWebContext; procedure Redirect(const AUrl: string); virtual; procedure ResponseStatus(const AStatusCode: Integer; const AReasonString: string = ''); virtual; function Serializer: IMVCSerializer; overload; function Serializer(const AContentType: string; const ARaiseExceptionIfNotExists: Boolean = True) : IMVCSerializer; overload; procedure SendStream(const AStream: TStream; const AOwns: Boolean = True; const ARewind: Boolean = False); virtual; procedure SendFile(const AFileName: string); virtual; procedure RenderResponseStream; virtual; function ResponseStream: TStringBuilder; procedure Render(const AContent: string); overload; // PODO renders procedure Render(const AObject: TObject; const ASerializationAction: TMVCSerializationAction = nil); overload; procedure Render(const AObject: TObject; const AOwns: Boolean; const ASerializationAction: TMVCSerializationAction = nil); overload; procedure Render(const AObject: TObject; const AOwns: Boolean; const AType: TMVCSerializationType; const ASerializationAction: TMVCSerializationAction = nil); overload; // PODOs Collection render procedure Render(const ACollection: TObjectList; const ASerializationAction: TMVCSerializationAction = nil); overload; procedure Render(const ACollection: TObjectList; const AOwns: Boolean; const ASerializationAction: TMVCSerializationAction = nil); overload; procedure Render(const ACollection: TObjectList; const AOwns: Boolean; const AType: TMVCSerializationType; const ASerializationAction: TMVCSerializationAction = nil); overload; procedure Render(const ACollection: IMVCList); overload; procedure Render(const ACollection: IMVCList; const AType: TMVCSerializationType); overload; procedure Render(const ATextWriter: TTextWriter; const AOwns: Boolean = True); overload; procedure Render(const AStream: TStream; const AOwns: Boolean = True); overload; procedure Render(const AErrorCode: Integer; const AErrorMessage: string; const AErrorClassName: string = ''; const ADataObject: TObject = nil); overload; procedure Render(const AException: Exception; AExceptionItems: TList = nil; const AOwns: Boolean = True); overload; procedure Render(const AResponse: TMVCResponse; const AOwns: Boolean = True); overload; // Dataset support procedure Render( const ADataSet: TDataSet; const ASerializationAction: TMVCDatasetSerializationAction = nil ); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; procedure Render( const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ANameCase: TMVCNameCase; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction = nil); overload; // SSE Support procedure RenderSSE(const EventID: string; const EventData: string; EventName: string = ''; const Retry: Integer = TMVCConstants.SSE_RETRY_DEFAULT); end; TMVCController = class(TMVCRenderer) private FViewModel: TMVCViewDataObject; FViewDataSets: TMVCViewDataSet; function GetSession: TWebSession; function GetViewData(const aModelName: string): TObject; function GetViewDataset(const aDataSetName: string): TDataSet; procedure SetViewData(const aModelName: string; const Value: TObject); procedure SetViewDataset(const aDataSetName: string; const Value: TDataSet); protected const CLIENTID_KEY = '__clientid'; protected procedure MVCControllerAfterCreate; virtual; procedure MVCControllerBeforeDestroy; virtual; procedure OnBeforeAction(AContext: TWebContext; const AActionName: string; var AHandled: Boolean); virtual; procedure OnAfterAction(AContext: TWebContext; const AActionName: string); virtual; function GetClientId: string; function GetCurrentWebModule: TWebModule; function GetViewModel: TMVCViewDataObject; function GetViewDataSets: TMVCViewDataSet; function GetRenderedView(const AViewNames: TArray): string; virtual; /// /// Load mustache view located in TMVCConfigKey.ViewsPath /// returns the rendered views and generates output using /// models pushed using Push* methods /// function LoadView(const AViewNames: TArray): string; virtual; /// /// Load a view fragment in the output render stream. The view fragment is appended to the /// ResponseStream verbatim. No processing happens. /// Useful when used with cache. /// It is equivalent to ResponseStream.Append(AViewFragment); /// procedure LoadViewFragment(const AViewFragment: string); function SessionAs: T; procedure RaiseSessionExpired; virtual; // Properties property Context: TWebContext read GetContext write FContext; property Session: TWebSession read GetSession; property ContentType: string read GetContentType write SetContentType; property StatusCode: Integer read GetStatusCode write SetStatusCode; property ViewModelList: TMVCViewDataObject read GetViewModel; property ViewDataSetList: TMVCViewDataSet read GetViewDataSets; public constructor Create; virtual; destructor Destroy; override; // procedure PushToView(const AModelName: string; const AModel: string); procedure PushObjectToView(const aModelName: string; const AModel: TObject); deprecated 'Use "ViewData"'; procedure PushDataSetToView(const aModelName: string; const ADataSet: TDataSet); deprecated 'Use "ViewDataSet"'; property ViewData[const aModelName: string]: TObject read GetViewData write SetViewData; property ViewDataset[const aDataSetName: string]: TDataSet read GetViewDataset write SetViewDataset; end; TMVCControllerClazz = class of TMVCController; TMVCControllerCreateAction = reference to function: TMVCController; TMVCObjectCreatorDelegate = reference to function: TObject; TMVCControllerDelegate = class private FClazz: TMVCControllerClazz; FCreateAction: TMVCControllerCreateAction; FURLSegment: string; protected { protected declarations } public constructor Create(const AClazz: TMVCControllerClazz; const ACreateAction: TMVCControllerCreateAction; const AURLSegment: string = ''); property Clazz: TMVCControllerClazz read FClazz; property CreateAction: TMVCControllerCreateAction read FCreateAction; property URLSegment: string read FURLSegment; end; TMVCStaticContents = class(TMVCController) private { private declarations } protected { protected declarations } public class procedure SendFile(const AFileName, AMediaType: string; AContext: TWebContext); class function IsStaticFile(const AViewPath, AWebRequestPath: string; out ARealFileName: string): Boolean; class function IsScriptableFile(const AStaticFileName: string; const AConfig: TMVCConfig): Boolean; end; /// /// Basis Interface for DMVC Middleware. /// IMVCMiddleware = interface ['{3278183A-124A-4214-AB4E-94CA4C22450D}'] /// /// Procedure is called before the MVCEngine routes the request to a specific controller/method. /// /// Webcontext which contains the complete request and response of the actual call. /// If set to True the Request would finished. Response must be set by the implementor. Default value is False. procedure OnBeforeRouting(AContext: TWebContext; var AHandled: Boolean); /// /// Procedure is called before the specific controller method is called. /// /// Webcontext which contains the complete request and response of the actual call. /// Qualified classname of the matching controller. /// Method name of the matching controller method. /// If set to True the Request would finished. Response must be set by the implementor. Default value is False. procedure OnBeforeControllerAction(AContext: TWebContext; const AControllerQualifiedClassName: string; const AActionName: string; var AHandled: Boolean); /// /// Procedure is called after the specific controller method was called. /// It is still possible to cancel or to completly modifiy the request. /// /// Webcontext which contains the complete request and response of the actual call. /// Method name of the matching controller method. /// If set to True the Request would finished. Response must be set by the implementor. Default value is False. procedure OnAfterControllerAction(AContext: TWebContext; const AActionName: string; const AHandled: Boolean); end; TMVCExceptionHandlerProc = reference to procedure(E: Exception; SelectedController: TMVCController; WebContext: TWebContext; var ExceptionHandled: Boolean); TMVCEngine = class(TComponent) private const ALLOWED_TYPED_ACTION_PARAMETERS_TYPES = 'Integer, Int64, Single, Double, Extended, Boolean, TDate, TTime, TDateTime and String'; private FViewEngineClass: TMVCViewEngineClass; FWebModule: TWebModule; FConfig: TMVCConfig; FConfigCache_MaxRequestSize: Int64; FSerializers: TDictionary; FMiddlewares: TList; FControllers: TObjectList; FMediaTypes: TDictionary; FApplicationSession: TWebApplicationSession; FSavedOnBeforeDispatch: THTTPMethodEvent; FOnException: TMVCExceptionHandlerProc; function IsStaticFileRequest(const ARequest: TWebRequest; out AFileName: string): Boolean; function SendStaticFileIfPresent(const AContext: TWebContext; const AFileName: string): Boolean; procedure FillActualParamsForAction(const AContext: TWebContext; const AActionFormalParams: TArray; const AActionName: string; var AActualParams: TArray); procedure RegisterDefaultsSerializers; function GetViewEngineClass: TMVCViewEngineClass; protected function CustomExceptionHandling(const Ex: Exception; const ASelectedController: TMVCController; const AContext: TWebContext): Boolean; procedure ConfigDefaultValues; virtual; procedure SaveCacheConfigValues; procedure LoadSystemControllers; virtual; procedure FixUpWebModule; procedure ExecuteBeforeRoutingMiddleware(const AContext: TWebContext; var AHandled: Boolean); procedure ExecuteBeforeControllerActionMiddleware(const AContext: TWebContext; const AControllerQualifiedClassName: string; const AActionName: string; var AHandled: Boolean); procedure ExecuteAfterControllerActionMiddleware(const AContext: TWebContext; const AActionName: string; const AHandled: Boolean); procedure DefineDefaultResponseHeaders(const AContext: TWebContext); procedure OnBeforeDispatch(ASender: TObject; ARequest: TWebRequest; AResponse: TWebResponse; var AHandled: Boolean); virtual; procedure ResponseErrorPage(const AException: Exception; const ARequest: TWebRequest; const AResponse: TWebResponse); virtual; function ExecuteAction(const ASender: TObject; const ARequest: TWebRequest; const AResponse: TWebResponse) : Boolean; virtual; public class function GetCurrentSession(const ASessionTimeout: Integer; const ASessionId: string; const ARaiseExceptionIfExpired: Boolean = True): TWebSession; static; class function ExtractSessionIdFromWebRequest(const AWebRequest: TWebRequest): string; static; class function SendSessionCookie(const AContext: TWebContext): string; overload; static; class function SendSessionCookie(const AContext: TWebContext; const ASessionId: string): string; overload; static; class procedure ClearSessionCookiesAlreadySet(const ACookies: TCookieCollection); static; public constructor Create(const AWebModule: TWebModule; const AConfigAction: TProc = nil; const ACustomLogger: ILogWriter = nil); reintroduce; destructor Destroy; override; function GetSessionBySessionId(const ASessionId: string): TWebSession; function AddSerializer(const AContentType: string; const ASerializer: IMVCSerializer): TMVCEngine; function AddMiddleware(const AMiddleware: IMVCMiddleware): TMVCEngine; function AddController(const AControllerClazz: TMVCControllerClazz; const AURLSegment: string = '') : TMVCEngine; overload; function AddController(const AControllerClazz: TMVCControllerClazz; const ACreateAction: TMVCControllerCreateAction; const AURLSegment: string = ''): TMVCEngine; overload; function PublishObject(const AObjectCreatorDelegate: TMVCObjectCreatorDelegate; const AURLSegment: string) : TMVCEngine; function SetViewEngine(const AViewEngineClass: TMVCViewEngineClass): TMVCEngine; function SetExceptionHandler(const AExceptionHandlerProc: TMVCExceptionHandlerProc): TMVCEngine; function GetServerSignature(const AContext: TWebContext): string; procedure HTTP404(const AContext: TWebContext); procedure HTTP500(const AContext: TWebContext; const AReasonString: string = ''); procedure SendRawHTTPStatus(const AContext: TWebContext; const HTTPStatusCode: Integer; const AReasonString: string; const AClassName: String = ''); property ViewEngineClass: TMVCViewEngineClass read GetViewEngineClass; property WebModule: TWebModule read FWebModule; property Config: TMVCConfig read FConfig; property Serializers: TDictionary read FSerializers; property Middlewares: TList read FMiddlewares; property Controllers: TObjectList read FControllers; property ApplicationSession: TWebApplicationSession read FApplicationSession write FApplicationSession; end; [MVCNameCase(ncLowerCase)] TMVCErrorResponseItem = class private FMessage: string; protected { protected declarations } public property message: string read FMessage write FMessage; end; [MVCNameCase(ncLowerCase)] TMVCResponse = class private FStatusCode: Integer; FReasonString: string; FMessage: string; fDataObject: TObject; protected { protected declarations } public constructor Create; overload; virtual; constructor Create(AStatusCode: Integer; AReasonString: string; AMessage: string); overload; property StatusCode: Integer read FStatusCode write FStatusCode; property ReasonString: string read FReasonString write FReasonString; property message: string read FMessage write FMessage; property Data: TObject read fDataObject write fDataObject; end; [MVCNameCase(ncLowerCase)] TMVCErrorResponse = class(TMVCResponse) private FClassname: string; FItems: TObjectList; public constructor Create; override; destructor Destroy; override; property Classname: string read FClassname write FClassname; [MVCListOf(TMVCErrorResponseItem)] property Items: TObjectList read FItems; end; TMVCBaseViewEngine = class(TMVCBase) private FViewName: string; FWebContext: TWebContext; FViewModel: TMVCViewDataObject; FViewDataSets: TObjectDictionary; FContentType: string; FOutput: string; protected function GetRealFileName(const AViewName: string): string; virtual; function IsCompiledVersionUpToDate(const AFileName, ACompiledFileName: string): Boolean; virtual; abstract; public constructor Create(const AEngine: TMVCEngine; const AWebContext: TWebContext; const AViewModel: TMVCViewDataObject; const AViewDataSets: TObjectDictionary; const AContentType: string); virtual; destructor Destroy; override; procedure Execute(const ViewName: string; const OutputStream: TStream); virtual; abstract; property ViewName: string read FViewName; property WebContext: TWebContext read FWebContext; property ViewModel: TMVCViewDataObject read FViewModel; property ViewDataSets: TObjectDictionary read FViewDataSets; property ContentType: string read FContentType; property Output: string read FOutput; end; function IsShuttingDown: Boolean; procedure EnterInShutdownState; function CreateResponse(const StatusCode: UInt16; const ReasonString: String; const Message: String = ''): TMVCResponse; implementation uses MVCFramework.Router, MVCFramework.SysControllers, MVCFramework.Serializer.JsonDataObjects, MVCFramework.JSONRPC; var _IsShuttingDown: Int64 = 0; _MVCGlobalActionParamsCache: TMVCStringObjectDictionary = nil; function IsShuttingDown: Boolean; begin Result := TInterlocked.Read(_IsShuttingDown) = 1 end; procedure EnterInShutdownState; begin TInterlocked.Add(_IsShuttingDown, 1); end; function CreateResponse(const StatusCode: UInt16; const ReasonString: String; const Message: String = ''): TMVCResponse; begin Result := TMVCResponse.Create(StatusCode, ReasonString, Message); end; { MVCHTTPMethodsAttribute } constructor MVCHTTPMethodsAttribute.Create(const AMVCHTTPMethods: TMVCHTTPMethods); begin inherited Create; FMVCHTTPMethods := AMVCHTTPMethods; end; function MVCHTTPMethodsAttribute.GetMVCHTTPMethodsAsString: string; var I: TMVCHTTPMethodType; begin Result := ''; for I := low(TMVCHTTPMethodType) to high(TMVCHTTPMethodType) do if I in FMVCHTTPMethods then Result := Result + ',' + GetEnumName(TypeInfo(TMVCHTTPMethodType), Ord(I)); if Result <> EmptyStr then Result := Result.Remove(0, 1) else Result := 'any'; end; { MVCStringAttribute } constructor MVCStringAttribute.Create(const AValue: string); begin inherited Create; FValue := AValue; end; { MVCProducesAttribute } constructor MVCProducesAttribute.Create(const AValue, ACharset: string); begin Create(AValue); FCharset := ACharset; end; constructor MVCProducesAttribute.Create(const AValue: string); begin inherited Create(AValue); FCharset := TMVCCharset.UTF_8; end; { MVCPathAttribute } constructor MVCPathAttribute.Create(const APath: string); begin inherited Create; FPath := APath; end; { TMVCWebRequest } function TMVCWebRequest.Accept: string; begin Result := FWebRequest.Accept; end; function TMVCWebRequest.Body: string; var lEncoding: TEncoding; lCurrCharset: string; {$IFNDEF BERLINORBETTER} lBuffer: TArray; {$ENDIF} begin { TODO -oEzequiel -cRefactoring : Refactoring the method TMVCWebRequest.Body } if (FBody = EmptyStr) then begin lCurrCharset := FCharset; if (lCurrCharset = EmptyStr) then lCurrCharset := 'UTF-8'; lEncoding := TEncoding.GetEncoding(lCurrCharset); try {$IFDEF BERLINORBETTER} FWebRequest.ReadTotalContent; // Otherwise ISAPI Raises "Empty BODY" FBody := lEncoding.GetString(FWebRequest.RawContent); {$ELSE} SetLength(lBuffer, FWebRequest.ContentLength); FWebRequest.ReadClient(lBuffer[0], FWebRequest.ContentLength); FBody := lEncoding.GetString(lBuffer); {$ENDIF} finally lEncoding.Free; end; end; Result := FBody; end; function TMVCWebRequest.BodyAs: T; var Obj: TObject; lSerializer: IMVCSerializer; begin Result := nil; if FSerializers.TryGetValue(ContentMediaType, lSerializer) then begin Obj := TMVCSerializerHelper.CreateObject(TClass(T).QualifiedClassName); try lSerializer.DeserializeObject(Body, Obj); Result := Obj as T; except on E: Exception do begin FreeAndNil(Obj); raise; end; end; end else raise EMVCDeserializationException.CreateFmt('Body ContentType "%s" not supported', [ContentType]); end; function TMVCWebRequest.BodyAsListOf: TObjectList; var List: TObjectList; lSerializer: IMVCSerializer; begin Result := nil; if FSerializers.TryGetValue(ContentMediaType, lSerializer) then begin List := TObjectList.Create(True); try lSerializer.DeserializeCollection(Body, List, T); Result := List; except FreeAndNil(List); raise; end; end else raise EMVCException.CreateFmt('Body ContentType "%s" not supported', [ContentType]); end; procedure TMVCWebRequest.BodyFor(const AObject: T); var lSerializer: IMVCSerializer; begin if Assigned(AObject) then if FSerializers.TryGetValue(ContentMediaType, lSerializer) then lSerializer.DeserializeObject(Body, AObject) else begin if ContentType.Trim.IsEmpty then begin raise EMVCException.Create('Request ContentType header is empty, cannot deserialize body'); end else begin raise EMVCException.CreateFmt('Body ContentType "%s" not supported', [ContentType]); end; end; end; procedure TMVCWebRequest.BodyForListOf(const AObjectList: TObjectList); var lSerializer: IMVCSerializer; begin if Assigned(AObjectList) then if FSerializers.TryGetValue(ContentMediaType, lSerializer) then lSerializer.DeserializeCollection(Body, AObjectList, T) else raise EMVCException.CreateFmt('Body ContentType "%s" not supported', [ContentType]); end; function TMVCWebRequest.ClientIp: string; var S: string; begin Result := EmptyStr; if FWebRequest.GetFieldByName('HTTP_CLIENT_IP') <> EmptyStr then Exit(FWebRequest.GetFieldByName('HTTP_CLIENT_IP')); for S in string(FWebRequest.GetFieldByName('HTTP_X_FORWARDED_FOR')).Split([',']) do if not S.Trim.IsEmpty then Exit(S.Trim); if FWebRequest.GetFieldByName('HTTP_X_FORWARDED') <> EmptyStr then Exit(FWebRequest.GetFieldByName('HTTP_X_FORWARDED')); if FWebRequest.GetFieldByName('HTTP_X_CLUSTER_CLIENT_IP') <> EmptyStr then Exit(FWebRequest.GetFieldByName('HTTP_X_CLUSTER_CLIENT_IP')); if FWebRequest.GetFieldByName('HTTP_FORWARDED_FOR') <> EmptyStr then Exit(FWebRequest.GetFieldByName('HTTP_FORWARDED_FOR')); if FWebRequest.GetFieldByName('HTTP_FORWARDED') <> EmptyStr then Exit(FWebRequest.GetFieldByName('HTTP_FORWARDED')); if FWebRequest.GetFieldByName('REMOTE_ADDR') <> EmptyStr then Exit(FWebRequest.GetFieldByName('REMOTE_ADDR')); if FWebRequest.RemoteIP <> EmptyStr then Exit(FWebRequest.RemoteIP); if FWebRequest.RemoteAddr <> EmptyStr then Exit(FWebRequest.RemoteAddr); if FWebRequest.RemoteHost <> EmptyStr then Exit(FWebRequest.RemoteHost); if FWebRequest.RemoteAddr <> EmptyStr then Exit(FWebRequest.RemoteAddr); if FWebRequest.RemoteIP <> EmptyStr then Exit(FWebRequest.RemoteIP); if FWebRequest.RemoteHost <> EmptyStr then Exit(FWebRequest.RemoteHost); end; function TMVCWebRequest.ClientPrefer(const AMediaType: string): Boolean; begin Result := AnsiPos(AMediaType, LowerCase(RawWebRequest.Accept)) = 1; end; function TMVCWebRequest.ClientPreferHTML: Boolean; begin Result := ClientPrefer(TMVCMediaType.TEXT_HTML); end; function TMVCWebRequest.ContentParam(const AName: string): string; begin Result := FWebRequest.ContentFields.Values[AName]; end; function TMVCWebRequest.Cookie(const AName: string): string; begin Result := FWebRequest.CookieFields.Values[AName]; end; constructor TMVCWebRequest.Create(const AWebRequest: TWebRequest; const ASerializers: TDictionary); begin inherited Create; FBody := EmptyStr; // FContentType := TMVCConstants.DEFAULT_CONTENT_TYPE; FCharset := TMVCConstants.DEFAULT_CONTENT_CHARSET; FWebRequest := AWebRequest; FSerializers := ASerializers; FParamsTable := nil; DefineContentType; end; procedure TMVCWebRequest.DefineContentType; begin SplitContentMediaTypeAndCharset(FWebRequest.GetFieldByName('Content-Type'), FContentMediaType, FCharset); FContentType := BuildContentType(FContentMediaType, FCharset); end; destructor TMVCWebRequest.Destroy; begin inherited Destroy; end; procedure TMVCWebRequest.EnsureQueryParamExists(const AName: string); begin if GetParams(AName).IsEmpty then raise EMVCException.CreateFmt('Parameter "%s" required', [AName]); end; function TMVCWebRequest.GetFiles: TAbstractWebRequestFiles; begin Result := FWebRequest.Files; end; function TMVCWebRequest.GetHeader(const AName: string): string; begin Result := FWebRequest.GetFieldByName(AName); end; function TMVCWebRequest.GetHTTPMethod: TMVCHTTPMethodType; begin Result := TMVCRouter.StringMethodToHTTPMetod(FWebRequest.Method); end; function TMVCWebRequest.GetHTTPMethodAsString: string; begin Result := FWebRequest.Method; end; function TMVCWebRequest.GetIsAjax: Boolean; begin Result := LowerCase(FWebRequest.GetFieldByName('X-Requested-With')) = 'xmlhttprequest'; end; function TMVCWebRequest.GetOverwrittenHTTPMethod: TMVCHTTPMethodType; var lOverriddenMethod: string; begin lOverriddenMethod := Headers[TMVCConstants.X_HTTP_Method_Override]; if lOverriddenMethod.IsEmpty then begin Exit(HTTPMethod); end else begin Result := TMVCRouter.StringMethodToHTTPMetod(FWebRequest.Method); end; end; function TMVCWebRequest.GetParamAsInt64(const AParamName: string): Int64; begin Result := StrToInt64(GetParams(AParamName)); end; function TMVCWebRequest.GetParamAsInteger(const AParamName: string): Integer; begin Result := StrToInt(GetParams(AParamName)); end; function TMVCWebRequest.GetParamNames: TArray; var I: Integer; Names: TList; N: string; begin Names := TList.Create; try if Assigned(FParamsTable) and (Length(FParamsTable.Keys.ToArray) > 0) then for N in FParamsTable.Keys.ToArray do Names.Add(N); if (FWebRequest.QueryFields.Count > 0) then for I := 0 to FWebRequest.QueryFields.Count - 1 do Names.Add(FWebRequest.QueryFields.Names[I]); if (FWebRequest.ContentFields.Count > 0) then for I := 0 to FWebRequest.ContentFields.Count - 1 do Names.Add(FWebRequest.ContentFields.Names[I]); if (FWebRequest.CookieFields.Count > 0) then for I := 0 to FWebRequest.CookieFields.Count - 1 do Names.Add(FWebRequest.CookieFields.Names[I]); Result := Names.ToArray; finally Names.Free; end; end; function TMVCWebRequest.GetParams(const AParamName: string): string; begin if (not Assigned(FParamsTable)) or (not FParamsTable.TryGetValue(AParamName, Result)) then begin Result := FWebRequest.ContentFields.Values[AParamName]; if Result.IsEmpty then Result := FWebRequest.QueryFields.Values[AParamName]; if Result.IsEmpty then Result := FWebRequest.CookieFields.Values[AParamName]; end; end; function TMVCWebRequest.GetParamsMulti(const AParamName: string): TArray; var lList: TList; procedure AddParamsToList(const AStrings: TStrings; const AList: TList); var I: Integer; begin for I := 0 to AStrings.Count - 1 do if SameText(AStrings.Names[I], AParamName) then AList.Add(AStrings.ValueFromIndex[I]); end; begin lList := TList.Create; try AddParamsToList(FWebRequest.ContentFields, lList); AddParamsToList(FWebRequest.QueryFields, lList); AddParamsToList(FWebRequest.CookieFields, lList); Result := lList.ToArray; finally lList.Free; end; end; function TMVCWebRequest.GetPathInfo: string; begin Result := FWebRequest.PathInfo; end; function TMVCWebRequest.QueryStringParam(const AName: string): string; begin Result := FWebRequest.QueryFields.Values[AName]; end; function TMVCWebRequest.QueryStringParamExists(const AName: string): Boolean; begin Result := QueryStringParam(AName) <> EmptyStr; end; function TMVCWebRequest.QueryStringParams: TStrings; begin Result := FWebRequest.QueryFields; end; function TMVCWebRequest.SegmentParam(const AParamName: string; out AValue: string): Boolean; begin Result := False; if Assigned(FParamsTable) then Result := FParamsTable.TryGetValue(AParamName, AValue); end; function TMVCWebRequest.SegmentParamsCount: Integer; begin Result := 0; if Assigned(FParamsTable) then Result := FParamsTable.Count; end; function TMVCWebRequest.ThereIsRequestBody: Boolean; begin Result := (FWebRequest.Content <> EmptyStr); end; { TMVCWebResponse } constructor TMVCWebResponse.Create(const AWebResponse: TWebResponse); begin inherited Create; FWebResponse := AWebResponse; FFlushOnDestroy := True; end; destructor TMVCWebResponse.Destroy; begin if FFlushOnDestroy then begin Flush; end; inherited Destroy; end; procedure TMVCWebResponse.Flush; begin if not FWebResponse.Sent then FWebResponse.SendResponse; end; function TMVCWebResponse.GetContent: string; begin Result := FWebResponse.Content; end; function TMVCWebResponse.GetContentType: string; begin Result := FWebResponse.ContentType; end; function TMVCWebResponse.GetCookies: TCookieCollection; begin Result := FWebResponse.Cookies; end; function TMVCWebResponse.GetCustomHeaders: TStrings; begin Result := FWebResponse.CustomHeaders; end; function TMVCWebResponse.GetLocation: string; begin Result := CustomHeaders.Values['location']; end; function TMVCWebResponse.GetReasonString: string; begin Result := FWebResponse.ReasonString; end; function TMVCWebResponse.GetStatusCode: Integer; begin Result := FWebResponse.StatusCode; end; procedure TMVCWebResponse.SetContent(const AValue: string); begin FWebResponse.Content := AValue; end; procedure TMVCWebResponse.SetContentStream(const AStream: TStream; const AContentType: string); begin ContentType := AContentType; FWebResponse.ContentStream := AStream; end; procedure TMVCWebResponse.SetContentType(const AValue: string); begin FWebResponse.ContentType := ''; FWebResponse.ContentType := AValue; end; procedure TMVCWebResponse.SetCustomHeader(const AName, AValue: string); begin FWebResponse.SetCustomHeader(AName, AValue); end; procedure TMVCWebResponse.SetLocation(const AValue: string); begin CustomHeaders.Values['location'] := AValue; end; procedure TMVCWebResponse.SetReasonString(const AValue: string); begin FWebResponse.ReasonString := AValue; end; procedure TMVCWebResponse.SetStatusCode(const AValue: Integer); begin FWebResponse.StatusCode := AValue; end; { TUser } procedure TUser.Clear; begin FUserName := EmptyStr; FLoggedSince := 0; FRealm := EmptyStr; FRoles.Clear; end; constructor TUser.Create; begin inherited Create; FRoles := TList.Create; FCustomData := nil; end; destructor TUser.Destroy; begin FRoles.Free; FreeAndNil(FCustomData); inherited Destroy; end; function TUser.IsValid: Boolean; begin Result := (not UserName.IsEmpty) and (LoggedSince > 0); end; function TUser.LoadFromSession(const AWebSession: TWebSession): Boolean; var SerObj: string; Pieces: TArray; I: Integer; begin if not Assigned(AWebSession) then Exit(False); SerObj := AWebSession[TMVCConstants.CURRENT_USER_SESSION_KEY]; Result := not SerObj.IsEmpty; if Result then begin Clear; Pieces := SerObj.Split(['$$'], TStringSplitOptions.None); UserName := Pieces[0]; LoggedSince := ISOTimeStampToDateTime(Pieces[1]); Realm := Pieces[2]; Roles.Clear; for I := 2 to Length(Pieces) - 1 do Roles.Add(Pieces[I]); end; end; procedure TUser.SaveToSession(const AWebSession: TWebSession); var LRoles: string; begin if (FRoles.Count > 0) then LRoles := string.Join('$$', FRoles.ToArray) else LRoles := ''; AWebSession[TMVCConstants.CURRENT_USER_SESSION_KEY] := FUserName + '$$' + DateTimeToISOTimeStamp(FLoggedSince) + '$$' + FRealm + '$$' + LRoles; end; procedure TUser.SetCustomData(const Value: TMVCCustomData); begin FCustomData := Value; end; procedure TUser.SetLoggedSince(const AValue: TDateTime); begin if (FLoggedSince = 0) then FLoggedSince := AValue else raise EMVCException.Create('TUser.LoggedSince already set.'); end; { TWebContext } function TWebContext.AddSessionToTheSessionList(const ASessionType, ASessionId: string; const ASessionTimeout: Integer) : TWebSession; var Session: TWebSession; begin if (Trim(ASessionType) = EmptyStr) then raise EMVCException.Create('Empty Session Type'); TMonitor.Enter(GlobalSessionList); try Session := TMVCSessionFactory.GetInstance.CreateNewByType(ASessionType, ASessionId, ASessionTimeout); GlobalSessionList.Add(ASessionId, Session); Result := Session; Session.MarkAsUsed; finally TMonitor.Exit(GlobalSessionList); end; end; procedure TWebContext.BindToSession(const ASessionId: string); begin if not Assigned(FWebSession) then begin FWebSession := TMVCEngine.GetCurrentSession(StrToInt64(FConfig[TMVCConfigKey.SessionTimeout]), ASessionId, False); if not Assigned(FWebSession) then raise EMVCException.Create('Invalid SessionID'); FWebSession.MarkAsUsed; TMVCEngine.SendSessionCookie(Self, ASessionId); end else raise EMVCException.Create('Session already bounded for this request'); end; constructor TWebContext.Create(const ARequest: TWebRequest; const AResponse: TWebResponse; const AConfig: TMVCConfig; const ASerializers: TDictionary); begin inherited Create; FIsSessionStarted := False; FSessionMustBeClose := False; FWebSession := nil; FRequest := nil; if not IsLibrary then begin FRequest := TMVCIndyWebRequest.Create(ARequest, ASerializers); end else begin {$IFDEF WEBAPACHEHTTP} if ARequest.ClassType = TApacheRequest then begin FRequest := TMVCApacheWebRequest.Create(ARequest, ASerializers) end else {$IFNDEF LINUX} if ARequest.ClassType = TISAPIRequest then begin FRequest := TMVCISAPIWebRequest.Create(ARequest, ASerializers) end else {$ENDIF} {$ENDIF} begin FRequest := TMVCIndyWebRequest.Create(ARequest, ASerializers); end; end; FResponse := TMVCWebResponse.Create(AResponse); FConfig := AConfig; FSerializers := ASerializers; FData := TDictionary.Create; FLoggedUser := nil; end; destructor TWebContext.Destroy; begin FResponse.Free; FRequest.Free; FData.Free; if Assigned(FLoggedUser) then FLoggedUser.Free; inherited Destroy; end; procedure TWebContext.Flush; begin FResponse.Flush; end; function TWebContext.GetLoggedUser: TUser; begin if not Assigned(FLoggedUser) then FLoggedUser := TUser.Create; Result := FLoggedUser; end; function TWebContext.GetParamsTable: TMVCRequestParamsTable; begin Result := FRequest.ParamsTable; end; function TWebContext.GetWebSession: TWebSession; begin if not Assigned(FWebSession) then begin FWebSession := TMVCEngine.GetCurrentSession(StrToInt64(FConfig[TMVCConfigKey.SessionTimeout]), TMVCEngine.ExtractSessionIdFromWebRequest(FRequest.RawWebRequest), False); if not Assigned(FWebSession) then SessionStart else TMVCEngine.SendSessionCookie(Self, FWebSession.SessionId); end; Result := FWebSession; Result.MarkAsUsed; end; function TWebContext.IsSessionStarted: Boolean; begin Result := FIsSessionStarted; end; function TWebContext.SendSessionCookie(const AContext: TWebContext): string; begin Result := TMVCEngine.SendSessionCookie(Self); end; function TWebContext.SessionId: string; begin if Assigned(FWebSession) then Exit(FWebSession.SessionId); Result := FRequest.Cookie(TMVCConstants.SESSION_TOKEN_NAME); end; function TWebContext.SessionMustBeClose: Boolean; begin Result := FSessionMustBeClose; end; procedure TWebContext.SessionStart; var Id: string; begin if not Assigned(FWebSession) then begin Id := TMVCEngine.SendSessionCookie(Self); FWebSession := AddSessionToTheSessionList(Config[TMVCConfigKey.SessionType], Id, StrToInt64(Config[TMVCConfigKey.SessionTimeout])); FIsSessionStarted := True; FSessionMustBeClose := False; end; end; function TWebContext.SessionStarted: Boolean; var SId: string; begin SId := SessionId; if SId.IsEmpty then Exit(False); TMonitor.Enter(GlobalSessionList); try Result := GlobalSessionList.ContainsKey(SId); finally TMonitor.Exit(GlobalSessionList); end; end; procedure TWebContext.SessionStop(const ARaiseExceptionIfExpired: Boolean); var Cookie: TCookie; SId: string; begin FResponse.Cookies.Clear; Cookie := FResponse.Cookies.Add; Cookie.Name := TMVCConstants.SESSION_TOKEN_NAME; Cookie.Value := GUIDToString(TGUID.NewGuid) + 'invalid' + GUIDToString(TGUID.NewGuid); Cookie.Expires := EncodeDate(1970, 1, 1); Cookie.Path := '/'; TMonitor.Enter(GlobalSessionList); try SId := TMVCEngine.ExtractSessionIdFromWebRequest(FRequest.RawWebRequest); GlobalSessionList.Remove(SId); finally TMonitor.Exit(GlobalSessionList); end; FIsSessionStarted := False; FSessionMustBeClose := True; end; procedure TWebContext.SetParamsTable(const AValue: TMVCRequestParamsTable); begin FRequest.ParamsTable := AValue; end; { TMVCEngine } function TMVCEngine.AddController(const AControllerClazz: TMVCControllerClazz; const AURLSegment: string): TMVCEngine; begin Result := AddController(AControllerClazz, nil, AURLSegment); end; function TMVCEngine.AddController(const AControllerClazz: TMVCControllerClazz; const ACreateAction: TMVCControllerCreateAction; const AURLSegment: string): TMVCEngine; begin FControllers.Add(TMVCControllerDelegate.Create(AControllerClazz, ACreateAction, AURLSegment)); Result := Self; end; function TMVCEngine.AddMiddleware(const AMiddleware: IMVCMiddleware): TMVCEngine; begin FMiddlewares.Add(AMiddleware); Result := Self; end; function TMVCEngine.AddSerializer(const AContentType: string; const ASerializer: IMVCSerializer): TMVCEngine; begin FSerializers.AddOrSetValue(AContentType, ASerializer); Result := Self; end; class procedure TMVCEngine.ClearSessionCookiesAlreadySet(const ACookies: TCookieCollection); var I: Integer; SessionCookieName: string; Cookie: TCookie; begin SessionCookieName := TMVCConstants.SESSION_TOKEN_NAME.ToLower; I := 0; while True do begin if I = ACookies.Count then Break; Cookie := ACookies[I]; if LowerCase(Cookie.Name) = SessionCookieName then ACookies.Delete(I) else Inc(I); end; end; procedure TMVCEngine.ConfigDefaultValues; begin Log.Info('ENTER: Config default values', LOGGERPRO_TAG); Config[TMVCConfigKey.SessionTimeout] := '30' { 30 minutes }; Config[TMVCConfigKey.DocumentRoot] := '.\www'; Config[TMVCConfigKey.FallbackResource] := ''; Config[TMVCConfigKey.DefaultContentType] := TMVCConstants.DEFAULT_CONTENT_TYPE; Config[TMVCConfigKey.DefaultContentCharset] := TMVCConstants.DEFAULT_CONTENT_CHARSET; Config[TMVCConfigKey.DefaultViewFileExtension] := 'html'; Config[TMVCConfigKey.ViewPath] := 'templates'; Config[TMVCConfigKey.PathPrefix] := ''; Config[TMVCConfigKey.AllowUnhandledAction] := 'false'; Config[TMVCConfigKey.ServerName] := 'DelphiMVCFramework'; Config[TMVCConfigKey.ExposeServerSignature] := 'true'; Config[TMVCConfigKey.SessionType] := 'memory'; Config[TMVCConfigKey.IndexDocument] := 'index.html'; Config[TMVCConfigKey.MaxEntitiesRecordCount] := '20'; Config[TMVCConfigKey.MaxRequestSize] := IntToStr(TMVCConstants.DEFAULT_MAX_REQUEST_SIZE); Config[TMVCConfigKey.HATEOSPropertyName] := '_links'; FMediaTypes.Add('.html', TMVCMediaType.TEXT_HTML); FMediaTypes.Add('.htm', TMVCMediaType.TEXT_HTML); FMediaTypes.Add('.txt', TMVCMediaType.TEXT_PLAIN); FMediaTypes.Add('.css', TMVCMediaType.TEXT_CSS); FMediaTypes.Add('.js', TMVCMediaType.TEXT_JAVASCRIPT); FMediaTypes.Add('.jpg', TMVCMediaType.IMAGE_JPEG); FMediaTypes.Add('.jpeg', TMVCMediaType.IMAGE_JPEG); FMediaTypes.Add('.png', TMVCMediaType.IMAGE_PNG); FMediaTypes.Add('.appcache', TMVCMediaType.TEXT_CACHEMANIFEST); Log.Info('EXIT: Config default values', LOGGERPRO_TAG); end; constructor TMVCEngine.Create(const AWebModule: TWebModule; const AConfigAction: TProc; const ACustomLogger: ILogWriter); begin inherited Create(AWebModule); FWebModule := AWebModule; FixUpWebModule; FConfig := TMVCConfig.Create; FSerializers := TDictionary.Create; FMiddlewares := TList.Create; FControllers := TObjectList.Create(True); FMediaTypes := TDictionary.Create; FApplicationSession := nil; FSavedOnBeforeDispatch := nil; WebRequestHandler.CacheConnections := True; WebRequestHandler.MaxConnections := 4096; MVCFramework.Logger.SetDefaultLogger(ACustomLogger); ConfigDefaultValues; if Assigned(AConfigAction) then begin LogEnterMethod('Custom configuration method'); AConfigAction(FConfig); LogExitMethod('Custom configuration method'); end; SaveCacheConfigValues; RegisterDefaultsSerializers; LoadSystemControllers; end; function TMVCEngine.CustomExceptionHandling(const Ex: Exception; const ASelectedController: TMVCController; const AContext: TWebContext): Boolean; begin Result := False; if Assigned(FOnException) then begin Log.ErrorFmt('[%s] %s', [Ex.Classname, Ex.Message], LOGGERPRO_TAG); FOnException(Ex, ASelectedController, AContext, Result); end; end; procedure TMVCEngine.DefineDefaultResponseHeaders(const AContext: TWebContext); begin if Config[TMVCConfigKey.ExposeServerSignature] = 'true' then AContext.Response.CustomHeaders.Values['Server'] := GetServerSignature(AContext); AContext.Response.RawWebResponse.Date := Now; end; destructor TMVCEngine.Destroy; begin FConfig.Free; FSerializers.Free; FMiddlewares.Free; FControllers.Free; FMediaTypes.Free; inherited Destroy; end; function TMVCEngine.ExecuteAction(const ASender: TObject; const ARequest: TWebRequest; const AResponse: TWebResponse): Boolean; var LParamsTable: TMVCRequestParamsTable; LContext: TWebContext; LFileName: string; LRouter: TMVCRouter; LHandled: Boolean; LResponseContentMediaType: string; LResponseContentCharset: string; LSelectedController: TMVCController; LActionFormalParams: TArray; LActualParams: TArray; begin Result := False; if ARequest.ContentLength > FConfigCache_MaxRequestSize then begin raise EMVCException.CreateFmt('Request size exceeded the max allowed size [%d KiB] (1)', [(FConfigCache_MaxRequestSize div 1024)]); end; {$IFDEF BERLINORBETTER} ARequest.ReadTotalContent; // Double check for malicious content-length header if ARequest.ContentLength > FConfigCache_MaxRequestSize then begin raise EMVCException.CreateFmt('Request size exceeded the max allowed size [%d KiB] (2)', [(FConfigCache_MaxRequestSize div 1024)]); end; {$ENDIF} LParamsTable := TMVCRequestParamsTable.Create; try LContext := TWebContext.Create(ARequest, AResponse, FConfig, FSerializers); try DefineDefaultResponseHeaders(LContext); LHandled := False; LRouter := TMVCRouter.Create(FConfig, _MVCGlobalActionParamsCache); try // finally LSelectedController := nil; try // only for lselectedcontroller try // global exception handler ExecuteBeforeRoutingMiddleware(LContext, LHandled); if not LHandled then begin if LRouter.ExecuteRouting(ARequest.PathInfo, LContext.Request.GetOverwrittenHTTPMethod { LContext.Request.HTTPMethod } , ARequest.ContentType, ARequest.Accept, FControllers, FConfig[TMVCConfigKey.DefaultContentType], FConfig[TMVCConfigKey.DefaultContentCharset], LParamsTable, LResponseContentMediaType, LResponseContentCharset) then begin try if Assigned(LRouter.ControllerCreateAction) then LSelectedController := LRouter.ControllerCreateAction() else LSelectedController := LRouter.ControllerClazz.Create; except on Ex: Exception do begin Log.ErrorFmt('[%s] %s (Custom message: "%s")', [Ex.Classname, Ex.Message, 'Cannot create controller'], LOGGERPRO_TAG); raise EMVCException.Create(HTTP_STATUS.InternalServerError, 'Cannot create controller'); // HTTP500(LContext, 'Cannot create controller'); // Result := False; // Exit; end; end; LSelectedController.Engine := Self; LSelectedController.Context := LContext; LSelectedController.ApplicationSession := FApplicationSession; LContext.ParamsTable := LParamsTable; ExecuteBeforeControllerActionMiddleware(LContext, LRouter.ControllerClazz.QualifiedClassName, LRouter.MethodToCall.Name, LHandled); if LHandled then Exit(True); LSelectedController.MVCControllerAfterCreate; try LHandled := False; LSelectedController.ContentType := BuildContentType(LResponseContentMediaType, LResponseContentCharset); // LSelectedController.ContentCharset := LResponseContentCharset; LActionFormalParams := LRouter.MethodToCall.GetParameters; if (Length(LActionFormalParams) = 0) then SetLength(LActualParams, 0) else if (Length(LActionFormalParams) = 1) and (SameText(LActionFormalParams[0].ParamType.QualifiedName, 'MVCFramework.TWebContext')) then begin SetLength(LActualParams, 1); LActualParams[0] := LContext; end else FillActualParamsForAction(LContext, LActionFormalParams, LRouter.MethodToCall.Name, LActualParams); LSelectedController.OnBeforeAction(LContext, LRouter.MethodToCall.Name, LHandled); if not LHandled then begin try LRouter.MethodToCall.Invoke(LSelectedController, LActualParams); finally LSelectedController.OnAfterAction(LContext, LRouter.MethodToCall.Name); end; end; finally LSelectedController.MVCControllerBeforeDestroy; end; ExecuteAfterControllerActionMiddleware(LContext, LRouter.MethodToCall.Name, LHandled); LContext.Response.ContentType := LSelectedController.ContentType; Log(TLogLevel.levNormal, ARequest.Method + ':' + ARequest.RawPathInfo + ' -> ' + LRouter.ControllerClazz.QualifiedClassName + ' - ' + IntToStr(AResponse.StatusCode) + ' ' + AResponse.ReasonString) end else // execute-routing begin if Config[TMVCConfigKey.AllowUnhandledAction] = 'false' then begin if not Config[TMVCConfigKey.FallbackResource].IsEmpty then begin if (LContext.Request.PathInfo = '/') or (LContext.Request.PathInfo = '') then // useful for SPA Result := SendStaticFileIfPresent(LContext, TPath.Combine(Config[TMVCConfigKey.DocumentRoot], Config[TMVCConfigKey.FallbackResource])); end; if (not Result) and (IsStaticFileRequest(ARequest, LFileName)) then begin Result := SendStaticFileIfPresent(LContext, LFileName); end; if not Result then begin // HTTP404(LContext); Log(TLogLevel.levNormal, ARequest.Method + ':' + ARequest.RawPathInfo + ' -> NO ACTION ' + ' - ' + IntToStr(AResponse.StatusCode) + ' ' + AResponse.ReasonString); raise EMVCException.Create(HTTP_STATUS.NotFound, 'Not Found'); end; end else LContext.Response.FlushOnDestroy := False; end; // end-execute-routing end; // if not handled by beforerouting except on ESess: EMVCSessionExpiredException do begin if not CustomExceptionHandling(ESess, LSelectedController, LContext) then begin Log.ErrorFmt('[%s] %s (Custom message: "%s")', [ESess.Classname, ESess.Message, ESess.DetailedMessage], LOGGERPRO_TAG); LContext.SessionStop(False); LSelectedController.ResponseStatus(ESess.HTTPErrorCode); LSelectedController.Render(ESess); end; end; on E: EMVCException do begin if not CustomExceptionHandling(E, LSelectedController, LContext) then begin Log.ErrorFmt('[%s] %s (Custom message: "%s")', [E.Classname, E.Message, E.DetailedMessage], LOGGERPRO_TAG); if Assigned(LSelectedController) then begin LSelectedController.ResponseStatus(E.HTTPErrorCode); LSelectedController.Render(E); end else begin SendRawHTTPStatus(LContext, E.HTTPErrorCode, Format('[%s] %s', [E.Classname, E.Message]), E.Classname); end; end; end; on EIO: EInvalidOp do begin if not CustomExceptionHandling(EIO, LSelectedController, LContext) then begin Log.ErrorFmt('[%s] %s (Custom message: "%s")', [EIO.Classname, EIO.Message, 'Invalid Op'], LOGGERPRO_TAG); if Assigned(LSelectedController) then begin LSelectedController.ResponseStatus(HTTP_STATUS.InternalServerError); LSelectedController.Render(EIO); end else begin SendRawHTTPStatus(LContext, HTTP_STATUS.InternalServerError, Format('[%s] %s', [EIO.Classname, EIO.Message]), EIO.Classname); end; end; end; on Ex: Exception do begin if not CustomExceptionHandling(Ex, LSelectedController, LContext) then begin Log.ErrorFmt('[%s] %s (Custom message: "%s")', [Ex.Classname, Ex.Message, 'Global Action Exception Handler'], LOGGERPRO_TAG); if Assigned(LSelectedController) then begin LSelectedController.ResponseStatus(HTTP_STATUS.InternalServerError); LSelectedController.Render(Ex); end else begin SendRawHTTPStatus(LContext, HTTP_STATUS.InternalServerError, Format('[%s] %s', [Ex.Classname, Ex.Message]), Ex.Classname); end; end; end; end; finally FreeAndNil(LSelectedController); end; finally LRouter.Free; end; finally LContext.Free; end; finally LParamsTable.Free; end; end; procedure TMVCEngine.ExecuteAfterControllerActionMiddleware(const AContext: TWebContext; const AActionName: string; const AHandled: Boolean); var I: Integer; begin for I := FMiddlewares.Count - 1 downto 0 do FMiddlewares[I].OnAfterControllerAction(AContext, AActionName, AHandled); end; procedure TMVCEngine.ExecuteBeforeControllerActionMiddleware(const AContext: TWebContext; const AControllerQualifiedClassName: string; const AActionName: string; var AHandled: Boolean); var Middleware: IMVCMiddleware; begin if not AHandled then for Middleware in FMiddlewares do begin Middleware.OnBeforeControllerAction(AContext, AControllerQualifiedClassName, AActionName, AHandled); if AHandled then Break; end; end; procedure TMVCEngine.ExecuteBeforeRoutingMiddleware(const AContext: TWebContext; var AHandled: Boolean); var Middleware: IMVCMiddleware; begin if not AHandled then for Middleware in FMiddlewares do begin Middleware.OnBeforeRouting(AContext, AHandled); if AHandled then Break; end; end; class function TMVCEngine.ExtractSessionIdFromWebRequest(const AWebRequest: TWebRequest): string; begin Result := AWebRequest.CookieFields.Values[TMVCConstants.SESSION_TOKEN_NAME]; if not Result.IsEmpty then Result := TIdURI.URLDecode(Result); end; procedure TMVCEngine.FillActualParamsForAction(const AContext: TWebContext; const AActionFormalParams: TArray; const AActionName: string; var AActualParams: TArray); var ParamName: string; I: Integer; StrValue: string; FormatSettings: TFormatSettings; WasDateTime: Boolean; lQualifiedName: string; begin if AContext.Request.SegmentParamsCount <> Length(AActionFormalParams) then raise EMVCException.CreateFmt('Parameters count mismatch (expected %d actual %d) for action "%s"', [Length(AActionFormalParams), AContext.Request.SegmentParamsCount, AActionName]); SetLength(AActualParams, Length(AActionFormalParams)); for I := 0 to Length(AActionFormalParams) - 1 do begin ParamName := AActionFormalParams[I].Name; if not AContext.Request.SegmentParam(ParamName, StrValue) then raise EMVCException.CreateFmt ('Invalid parameter %s for action %s (Hint: Here parameters names are case-sensitive)', [ParamName, AActionName]); case AActionFormalParams[I].ParamType.TypeKind of tkInteger: begin AActualParams[I] := StrToInt(StrValue); end; tkInt64: begin AActualParams[I] := StrToInt64(StrValue); end; tkUString: begin AActualParams[I] := StrValue; end; tkFloat: begin WasDateTime := False; lQualifiedName := AActionFormalParams[I].ParamType.QualifiedName; if lQualifiedName = 'System.TDate' then begin try WasDateTime := True; AActualParams[I] := ISODateToDate(StrValue); except raise EMVCException.CreateFmt('Invalid TDate value for param [%s]', [AActionFormalParams[I].Name]); end; end else if lQualifiedName = 'System.TDateTime' then begin try WasDateTime := True; AActualParams[I] := ISOTimeStampToDateTime(StrValue); except on E: Exception do begin raise EMVCException.CreateFmt('Invalid TDateTime value for param [%s][%s]', [AActionFormalParams[I].Name, E.Message]); end; end; end else if lQualifiedName = 'System.TTime' then begin try WasDateTime := True; AActualParams[I] := ISOTimeToTime(StrValue); except raise EMVCException.CreateFmt('Invalid TTime value for param [%s]', [AActionFormalParams[I].Name]); end; end; if not WasDateTime then begin FormatSettings.DecimalSeparator := '.'; AActualParams[I] := StrToFloat(StrValue, FormatSettings); end; end; tkEnumeration: begin if AActionFormalParams[I].ParamType.QualifiedName = 'System.Boolean' then begin if SameText(StrValue, 'true') or SameText(StrValue, '1') then AActualParams[I] := True else if SameText(StrValue, 'false') or SameText(StrValue, '0') then AActualParams[I] := False else raise EMVCException.CreateFmt ('Invalid boolean value for parameter %s. Boolean parameters accepts only "true"/"false" or "1"/"0".', [ParamName]); end else raise EMVCException.CreateFmt('Invalid type for parameter %s. Allowed types are ' + ALLOWED_TYPED_ACTION_PARAMETERS_TYPES, [ParamName]); end; else begin raise EMVCException.CreateFmt('Invalid type for parameter %s. Allowed types are ' + ALLOWED_TYPED_ACTION_PARAMETERS_TYPES, [ParamName]); end; end; end; end; procedure TMVCEngine.FixUpWebModule; begin FSavedOnBeforeDispatch := FWebModule.BeforeDispatch; FWebModule.BeforeDispatch := OnBeforeDispatch; end; class function TMVCEngine.GetCurrentSession(const ASessionTimeout: Integer; const ASessionId: string; const ARaiseExceptionIfExpired: Boolean): TWebSession; var List: TObjectDictionary; IsExpired: Boolean; begin Result := nil; List := GlobalSessionList; TMonitor.Enter(List); try if not ASessionId.IsEmpty then begin IsExpired := True; if List.TryGetValue(ASessionId, Result) then if (ASessionTimeout = 0) then IsExpired := MinutesBetween(Now, Result.LastAccess) > DEFAULT_SESSION_INACTIVITY else IsExpired := MinutesBetween(Now, Result.LastAccess) > ASessionTimeout; if Assigned(Result) then if IsExpired then begin List.Remove(ASessionId); if ARaiseExceptionIfExpired then raise EMVCSessionExpiredException.Create('Session expired.') else Result := nil; end else Result.MarkAsUsed; end; finally TMonitor.Exit(List); end; end; function TMVCEngine.GetServerSignature(const AContext: TWebContext): string; begin if AContext.Config.Value[TMVCConfigKey.ExposeServerSignature] = 'true' then begin Result := 'DelphiMVCFramework ' + DMVCFRAMEWORK_VERSION; end else begin Result := ''; end; end; function TMVCEngine.GetSessionBySessionId(const ASessionId: string): TWebSession; begin Result := TMVCEngine.GetCurrentSession(StrToInt64(Config[TMVCConfigKey.SessionTimeout]), ASessionId, False); if Assigned(Result) then Result.MarkAsUsed; end; function TMVCEngine.GetViewEngineClass: TMVCViewEngineClass; begin if FViewEngineClass = nil then raise EMVCConfigException.Create ('No View Engine configured. [HINT: Use TMVCEngine.SetViewEngine() to set a valid view engine]'); Result := FViewEngineClass; end; procedure TMVCEngine.HTTP404(const AContext: TWebContext); begin AContext.Response.SetStatusCode(HTTP_STATUS.NotFound); AContext.Response.SetContentType(BuildContentType(TMVCMediaType.TEXT_PLAIN, AContext.Config[TMVCConfigKey.DefaultContentCharset])); AContext.Response.SetReasonString('Not Found'); AContext.Response.SetContent('Not Found' + sLineBreak + GetServerSignature(AContext)); end; procedure TMVCEngine.HTTP500(const AContext: TWebContext; const AReasonString: string); begin AContext.Response.SetStatusCode(HTTP_STATUS.InternalServerError); AContext.Response.SetContentType(BuildContentType(TMVCMediaType.TEXT_PLAIN, AContext.Config[TMVCConfigKey.DefaultContentCharset])); AContext.Response.SetReasonString('Internal server error'); AContext.Response.SetContent('Internal server error' + sLineBreak + GetServerSignature(AContext) + ': ' + AReasonString); end; procedure TMVCEngine.SendRawHTTPStatus(const AContext: TWebContext; const HTTPStatusCode: Integer; const AReasonString: string; const AClassName: String); var lSer: IMVCSerializer; lError: TMVCErrorResponse; begin AContext.Response.SetStatusCode(HTTPStatusCode); AContext.Response.SetReasonString(AReasonString); if Serializers.TryGetValue(AContext.Config[TMVCConfigKey.DefaultContentType], lSer) then begin lError := TMVCErrorResponse.Create; try lError.Classname := AClassName; lError.StatusCode := HTTPStatusCode; lError.Message := AReasonString; AContext.Response.SetContent(lSer.SerializeObject(lError)); finally lError.Free; end; AContext.Response.SetContentType(AContext.Config[TMVCConfigKey.DefaultContentType]); end else begin AContext.Response.SetContentType(BuildContentType(TMVCMediaType.TEXT_PLAIN, AContext.Config[TMVCConfigKey.DefaultContentCharset])); AContext.Response.SetContent(GetServerSignature(AContext) + sLineBreak + 'HTTP ' + HTTPStatusCode.ToString + ': ' + AReasonString); end; end; function TMVCEngine.IsStaticFileRequest(const ARequest: TWebRequest; out AFileName: string): Boolean; begin Result := (not FConfig[TMVCConfigKey.DocumentRoot].IsEmpty) and (TMVCStaticContents.IsStaticFile(FConfig[TMVCConfigKey.DocumentRoot], ARequest.PathInfo, AFileName)); end; procedure TMVCEngine.LoadSystemControllers; begin Log(TLogLevel.levNormal, 'ENTER: LoadSystemControllers'); AddController(TMVCSystemController); Log(TLogLevel.levNormal, 'EXIT: LoadSystemControllers'); end; procedure TMVCEngine.OnBeforeDispatch(ASender: TObject; ARequest: TWebRequest; AResponse: TWebResponse; var AHandled: Boolean); begin AHandled := False; { there is a bug in WebBroker Linux on 10.2.1 tokyo } // if Assigned(FSavedOnBeforeDispatch) then // begin // FSavedOnBeforeDispatch(ASender, ARequest, AResponse, AHandled); // end; if not AHandled then begin try AHandled := ExecuteAction(ASender, ARequest, AResponse); except on E: Exception do begin Log.ErrorFmt('[%s] %s', [E.Classname, E.Message], LOGGERPRO_TAG); AResponse.Content := E.Message; AResponse.SendResponse; AHandled := True; end; end; end; end; function TMVCEngine.PublishObject(const AObjectCreatorDelegate: TMVCObjectCreatorDelegate; const AURLSegment: string) : TMVCEngine; begin Result := AddController(TMVCJSONRPCPublisher, function: TMVCController begin Result := TMVCJSONRPCPublisher.Create(AObjectCreatorDelegate(), True); end, AURLSegment); end; procedure TMVCEngine.RegisterDefaultsSerializers; var lDefaultSerializerContentType: string; begin lDefaultSerializerContentType := BuildContentType(TMVCMediaType.APPLICATION_JSON, TMVCCharset.UTF_8); if not FSerializers.ContainsKey(lDefaultSerializerContentType) then begin FSerializers.Add(lDefaultSerializerContentType, TMVCJSONDataObjectsSerializer.Create); end; // register the same serializer without the charset in the contenttype lDefaultSerializerContentType := BuildContentType(TMVCMediaType.APPLICATION_JSON, ''); if not FSerializers.ContainsKey(lDefaultSerializerContentType) then begin FSerializers.Add(lDefaultSerializerContentType, TMVCJSONDataObjectsSerializer.Create); end; end; procedure TMVCEngine.ResponseErrorPage(const AException: Exception; const ARequest: TWebRequest; const AResponse: TWebResponse); begin AResponse.SetCustomHeader('x-mvc-error', AException.Classname + ': ' + AException.Message); AResponse.StatusCode := HTTP_STATUS.OK; begin AResponse.ContentType := TMVCMediaType.TEXT_PLAIN; AResponse.Content := Config[TMVCConfigKey.ServerName] + ' ERROR:' + sLineBreak + 'Exception raised of class: ' + AException.Classname + sLineBreak + '***********************************************' + sLineBreak + AException.Message + sLineBreak + '***********************************************'; end; end; class function TMVCEngine.SendSessionCookie(const AContext: TWebContext): string; var SId: string; begin SId := StringReplace(StringReplace(StringReplace(GUIDToString(TGUID.NewGuid), '}', '', []), '{', '', []), '-', '', [rfReplaceAll]); Result := SendSessionCookie(AContext, SId); end; procedure TMVCEngine.SaveCacheConfigValues; begin FConfigCache_MaxRequestSize := StrToInt64Def(Config[TMVCConfigKey.MaxRequestSize], TMVCConstants.DEFAULT_MAX_REQUEST_SIZE); end; class function TMVCEngine.SendSessionCookie(const AContext: TWebContext; const ASessionId: string): string; var Cookie: TCookie; SessionTimeout: Integer; begin ClearSessionCookiesAlreadySet(AContext.Response.Cookies); Cookie := AContext.Response.Cookies.Add; Cookie.Name := TMVCConstants.SESSION_TOKEN_NAME; Cookie.Value := ASessionId; if not TryStrToInt(AContext.Config[TMVCConfigKey.SessionTimeout], SessionTimeout) then raise EMVCException.Create('[Config::Session Timeout] is not a valid integer'); if SessionTimeout = 0 then Cookie.Expires := 0 // session cookie else Cookie.Expires := Now + OneMinute * SessionTimeout; Cookie.Path := '/'; Result := ASessionId; end; function TMVCEngine.SendStaticFileIfPresent(const AContext: TWebContext; const AFileName: string): Boolean; var lContentType: string; begin Result := False; if TFile.Exists(AFileName) then begin if FMediaTypes.TryGetValue(LowerCase(ExtractFileExt(AFileName)), lContentType) then lContentType := BuildContentType(lContentType, FConfig[TMVCConfigKey.DefaultContentCharset]) else lContentType := BuildContentType(TMVCMediaType.APPLICATION_OCTETSTREAM, ''); TMVCStaticContents.SendFile(AFileName, lContentType, AContext); Result := True; end; end; function TMVCEngine.SetExceptionHandler( const AExceptionHandlerProc: TMVCExceptionHandlerProc): TMVCEngine; begin FOnException := AExceptionHandlerProc; Result := Self; end; function TMVCEngine.SetViewEngine(const AViewEngineClass: TMVCViewEngineClass): TMVCEngine; begin FViewEngineClass := AViewEngineClass; Result := Self; end; { TMVCBase } class function TMVCBase.GetApplicationFileName: string; // var // Name: PChar; // Size: Integer; begin Result := GetModuleName(HInstance); // Result := EmptyStr; // Name := GetMemory(2048); // try // GetModuleName() // Size := GetModuleFileName(0, Name, 2048); // if Size > 0 then // Result := Name; // finally // FreeMem(Name, 2048); // end; end; class function TMVCBase.GetApplicationFileNamePath: string; begin Result := IncludeTrailingPathDelimiter(ExtractFilePath(GetApplicationFileName)); end; function TMVCBase.GetApplicationSession: TWebApplicationSession; begin if not Assigned(FApplicationSession) then raise EMVCException.CreateFmt('ApplicationSession not assigned to this %s instance.', [Classname]); Result := FApplicationSession; end; function TMVCBase.GetConfig: TMVCConfig; begin Result := Engine.Config; end; function TMVCBase.GetEngine: TMVCEngine; begin if not Assigned(FEngine) then raise EMVCException.CreateFmt('MVCEngine not assigned to this %s instance.', [Classname]); Result := FEngine; end; procedure TMVCBase.SetApplicationSession(const AValue: TWebApplicationSession); begin FApplicationSession := AValue; end; procedure TMVCBase.SetEngine(const AValue: TMVCEngine); begin FEngine := AValue; end; { TMVCControllerDelegate } constructor TMVCControllerDelegate.Create(const AClazz: TMVCControllerClazz; const ACreateAction: TMVCControllerCreateAction; const AURLSegment: string = ''); begin inherited Create; FClazz := AClazz; FCreateAction := ACreateAction; FURLSegment := AURLSegment; end; { TMVCStaticContents } class function TMVCStaticContents.IsScriptableFile(const AStaticFileName: string; const AConfig: TMVCConfig): Boolean; begin Result := TPath.GetExtension(AStaticFileName).ToLower = '.' + AConfig[TMVCConfigKey.DefaultViewFileExtension].ToLower; end; class function TMVCStaticContents.IsStaticFile(const AViewPath, AWebRequestPath: string; out ARealFileName: string): Boolean; var FileName: string; begin if TDirectory.Exists(AViewPath) then FileName := AViewPath + AWebRequestPath.Replace('/', TPath.DirectorySeparatorChar) else FileName := GetApplicationFileNamePath + AViewPath + AWebRequestPath.Replace('/', TPath.DirectorySeparatorChar); ARealFileName := FileName; Result := TFile.Exists(ARealFileName); end; class procedure TMVCStaticContents.SendFile(const AFileName, AMediaType: string; AContext: TWebContext); var FileDate: TDateTime; ReqDate: TDateTime; S: TFileStream; begin FileDate := IndyFileAge(AFileName); if (FileDate = 0.0) and (not FileExists(AFileName)) then begin AContext.Response.StatusCode := 404; end else begin ReqDate := GMTToLocalDateTime(AContext.Request.Headers['If-Modified-Since']); if (ReqDate <> 0) and (abs(ReqDate - FileDate) < 2 * (1 / (24 * 60 * 60))) then begin AContext.Response.ContentType := AMediaType; AContext.Response.StatusCode := 304; end else begin S := TFileStream.Create(AFileName, fmOpenRead or fmShareDenyNone); AContext.Response.SetCustomHeader('Last-Modified', LocalDateTimeToHttpStr(FileDate)); AContext.Response.SetContentStream(S, AMediaType); end; end; end; { TMVCController } constructor TMVCController.Create; begin inherited Create; FContext := nil; FContentCharset := TMVCConstants.DEFAULT_CONTENT_CHARSET; FResponseStream := nil; FViewModel := nil; FViewDataSets := nil; end; destructor TMVCController.Destroy; begin if Assigned(FResponseStream) then FResponseStream.Free; if Assigned(FViewModel) then FViewModel.Free; if Assigned(FViewDataSets) then FViewDataSets.Free; inherited Destroy; end; function TMVCController.GetClientId: string; begin Result := Session[CLIENTID_KEY]; if Result.IsEmpty then raise EMVCException.Create('Invalid ClientID' + sLineBreak + 'Hint: Messaging extensions require a valid clientid. Did you call /messages/clients/YOUR_CLIENT_ID ?'); end; function TMVCRenderer.GetContentType: string; begin Result := GetContext.Response.ContentType; if Result.Trim.IsEmpty then begin GetContext.Response.ContentType := FContext.FConfig[MVCFramework.Commons.TMVCConfigKey.DefaultContentType]; Result := GetContentType; end; end; function TMVCRenderer.GetContext: TWebContext; begin if not Assigned(FContext) then raise EMVCException.CreateFmt('Context already set on %s.', [Classname]); Result := FContext; end; function TMVCController.GetCurrentWebModule: TWebModule; begin Result := Engine.WebModule; end; function TMVCController.GetSession: TWebSession; begin Result := GetContext.Session; end; function TMVCRenderer.GetStatusCode: Integer; begin Result := GetContext.Response.StatusCode; end; function TMVCController.GetViewData(const aModelName: string): TObject; begin if not FViewModel.TryGetValue(aModelName, Result) then Result := nil; end; function TMVCController.GetViewDataset(const aDataSetName: string): TDataSet; begin if not FViewDataSets.TryGetValue(aDataSetName, Result) then Result := nil; end; function TMVCController.GetViewDataSets: TMVCViewDataSet; begin if not Assigned(FViewDataSets) then FViewDataSets := TMVCViewDataSet.Create; Result := FViewDataSets; end; function TMVCController.GetViewModel: TMVCViewDataObject; begin if not Assigned(FViewModel) then FViewModel := TMVCViewDataObject.Create; Result := FViewModel; end; function TMVCController.LoadView(const AViewNames: TArray): string; begin try Result := GetRenderedView(AViewNames); ResponseStream.Append(Result); except on E: Exception do begin Log.ErrorFmt('[%s] %s', [E.Classname, E.Message], LOGGERPRO_TAG); ContentType := TMVCMediaType.TEXT_PLAIN; Render(E); end; end; end; procedure TMVCController.LoadViewFragment(const AViewFragment: string); begin ResponseStream.Append(AViewFragment); end; procedure TMVCController.MVCControllerAfterCreate; begin { Implement if need be. } end; procedure TMVCController.MVCControllerBeforeDestroy; begin { Implement if need be. } end; procedure TMVCController.OnAfterAction(AContext: TWebContext; const AActionName: string); begin { Implement if need be. } end; procedure TMVCController.OnBeforeAction(AContext: TWebContext; const AActionName: string; var AHandled: Boolean); begin AHandled := False; if ContentType.IsEmpty then ContentType := Config[TMVCConfigKey.DefaultContentType]; { Implement if need be. } end; procedure TMVCController.PushDataSetToView(const aModelName: string; const ADataSet: TDataSet); begin GetViewDataSets.Add(aModelName, ADataSet); end; procedure TMVCController.PushObjectToView(const aModelName: string; const AModel: TObject); begin GetViewModel.Add(aModelName, AModel); end; procedure TMVCController.RaiseSessionExpired; begin raise EMVCSessionExpiredException.Create('Session expired.'); end; procedure TMVCRenderer.Redirect(const AUrl: string); begin GetContext.Response.RawWebResponse.SendRedirect(AUrl); end; procedure TMVCRenderer.Render(const AObject: TObject; const AOwns: Boolean; const ASerializationAction: TMVCSerializationAction = nil); begin Render(AObject, AOwns, stDefault, ASerializationAction); end; procedure TMVCRenderer.Render(const AContent: string); var lContentType: string; lOutEncoding: TEncoding; lCharset: string; begin SplitContentMediaTypeAndCharset(GetContentType, lContentType, lCharset); if lCharset.IsEmpty then lCharset := TMVCConstants.DEFAULT_CONTENT_CHARSET; if lContentType.IsEmpty then lContentType := TMVCConstants.DEFAULT_CONTENT_TYPE; lContentType := BuildContentType(lContentType, lCharset); lOutEncoding := TEncoding.GetEncoding(lCharset); try if SameText('UTF-8', UpperCase(lCharset)) then GetContext.Response.SetContentStream(TStringStream.Create(AContent, TEncoding.UTF8), lContentType) else begin GetContext.Response.SetContentStream(TBytesStream.Create(TEncoding.Convert(TEncoding.Default, lOutEncoding, TEncoding.Default.GetBytes(AContent))), lContentType); end; finally lOutEncoding.Free; end; end; procedure TMVCRenderer.Render(const ACollection: TObjectList; const AOwns: Boolean; const ASerializationAction: TMVCSerializationAction); begin Self.Render(ACollection, AOwns, stDefault, ASerializationAction); end; procedure TMVCRenderer.ResponseStatus(const AStatusCode: Integer; const AReasonString: string); begin SetStatusCode(AStatusCode); GetContext.Response.ReasonString := AReasonString; end; function TMVCRenderer.ResponseStream: TStringBuilder; begin if not Assigned(FResponseStream) then FResponseStream := TStringBuilder.Create; Result := FResponseStream; end; function TMVCRenderer.Serializer: IMVCSerializer; begin Result := Serializer(GetContentType); end; procedure TMVCRenderer.SendFile(const AFileName: string); begin TMVCStaticContents.SendFile(AFileName, GetContentType, GetContext); end; procedure TMVCRenderer.SendStream(const AStream: TStream; const AOwns: Boolean; const ARewind: Boolean); var lTemp: TStream; begin if ARewind then begin AStream.Position := 0; end; lTemp := TMemoryStream.Create; try lTemp.CopyFrom(AStream, 0); lTemp.Position := 0; except lTemp.Free; raise; end; if AOwns then begin AStream.Free; end; GetContext.Response.RawWebResponse.Content := EmptyStr; GetContext.Response.RawWebResponse.ContentType := GetContentType; GetContext.Response.RawWebResponse.ContentStream := lTemp; GetContext.Response.RawWebResponse.FreeContentStream := True; end; function TMVCRenderer.Serializer(const AContentType: string; const ARaiseExceptionIfNotExists: Boolean): IMVCSerializer; var lContentMediaType: string; lContentCharSet: string; begin SplitContentMediaTypeAndCharset(AContentType.ToLower, lContentMediaType, lContentCharSet); if Engine.Serializers.ContainsKey(lContentMediaType) then begin Result := Engine.Serializers.Items[lContentMediaType]; end else begin if ARaiseExceptionIfNotExists then begin raise EMVCException.CreateFmt('The serializer for %s could not be found.', [lContentMediaType]); end else begin Result := nil; end; end; end; function TMVCController.SessionAs: T; begin Result := Session as T; end; procedure TMVCRenderer.SetContentType(const AValue: string); begin GetContext.Response.ContentType := AValue; end; procedure TMVCRenderer.SetStatusCode(const AValue: Integer); begin GetContext.Response.StatusCode := AValue; end; procedure TMVCController.SetViewData(const aModelName: string; const Value: TObject); begin GetViewModel.Add(aModelName, Value); end; procedure TMVCController.SetViewDataset(const aDataSetName: string; const Value: TDataSet); begin GetViewDataSets.Add(aDataSetName, Value); end; procedure TMVCRenderer.Render(const AObject: TObject; const AOwns: Boolean; const AType: TMVCSerializationType; const ASerializationAction: TMVCSerializationAction = nil); begin try Render(Serializer(GetContentType).SerializeObject(AObject, AType, [], ASerializationAction)); finally if AOwns then AObject.Free; end; end; procedure TMVCRenderer.Render(const AStream: TStream; const AOwns: Boolean); begin SendStream(AStream, AOwns); end; procedure TMVCRenderer.Render(const AErrorCode: Integer; const AErrorMessage, AErrorClassName: string; const ADataObject: TObject); var R: TMVCErrorResponse; begin ResponseStatus(AErrorCode, AErrorMessage); R := TMVCErrorResponse.Create; try R.StatusCode := AErrorCode; if ((R.StatusCode div 100) = 2) then R.ReasonString := 'ok' else R.ReasonString := 'error'; R.Message := AErrorMessage; R.Classname := AErrorClassName; R.Data := ADataObject; Render(R, False, stProperties); finally R.Free; end; end; procedure TMVCRenderer.Render(const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ANameCase: TMVCNameCase; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction); begin if Assigned(ADataSet) then begin try case ASerializationType of dstSingleRecord: begin Render(Serializer(GetContentType).SerializeDataSetRecord(ADataSet, AIgnoredFields, ANameCase, ASerializationAction)) end; dstAllRecords: begin Render(Serializer(GetContentType).SerializeDataSet(ADataSet, AIgnoredFields, ANameCase, ASerializationAction)) end else begin raise EMVCSerializationException.Create('Invalid dataset serialization type'); end; end; // if ASerializationType = dstSingleRecord then // Render(Serializer(GetContentType).SerializeDataSetRecord(ADataSet, AIgnoredFields, ANameCase, // ASerializationAction)) // else // Render(Serializer(GetContentType).SerializeDataSet(ADataSet, AIgnoredFields, ANameCase, ASerializationAction)) finally if AOwns then ADataSet.Free; end; end else raise EMVCException.Create('Can not render an empty dataset.'); end; procedure TMVCRenderer.Render(const ACollection: TObjectList; const AOwns: Boolean; const AType: TMVCSerializationType; const ASerializationAction: TMVCSerializationAction); var lSerializationAction: TMVCSerializationAction; begin if Assigned(ACollection) then begin try if Assigned(ASerializationAction) then begin lSerializationAction := procedure(const AObject: TObject; const Dict: IMVCLinks) begin ASerializationAction(T(AObject), Dict); end; end else begin lSerializationAction := nil; end; Render(Serializer(GetContentType).SerializeCollection(ACollection, AType, [], lSerializationAction)); finally if AOwns then ACollection.Free; end; end else raise EMVCException.Create('Can not render an empty collection.'); end; function TMVCController.GetRenderedView(const AViewNames: TArray): string; var lView: TMVCBaseViewEngine; lViewName: string; lStrStream: TStringStream; begin lStrStream := TStringStream.Create('', TEncoding.UTF8); try lView := FEngine.ViewEngineClass.Create(Engine, Context, ViewModelList, ViewDataSetList, ContentType); try for lViewName in AViewNames do begin lView.Execute(lViewName, lStrStream); end; finally lView.Free; end; lStrStream.Position := 0; Result := lStrStream.DataString; finally lStrStream.Free; end; end; procedure TMVCRenderer.Render(const ACollection: TObjectList; const ASerializationAction: TMVCSerializationAction); begin Self.Render(ACollection, True, ASerializationAction); end; procedure TMVCRenderer.RenderResponseStream; begin Render(ResponseStream.ToString); end; procedure TMVCRenderer.RenderSSE(const EventID, EventData: string; EventName: string; const Retry: Integer); begin // setting up the correct SSE headers SetContentType('text/event-stream'); GetContext.Response.SetCustomHeader('Cache-Control', 'no-cache'); GetContext.Response.StatusCode := HTTP_STATUS.OK; // render the response using SSE compliant data format // current event id (the client will resend this number at the next request) ResponseStream.Append(Format('id: %s'#13, [EventID])); // The browser attempts to reconnect to the source roughly 3 seconds after // each connection is closed. You can change that timeout by including a line // beginning with "retry:", followed by the number of milliseconds to wait // before trying to reconnect. if Retry > -1 then begin ResponseStream.Append(Format('retry: %d'#13, [Retry])); end; if not EventName.IsEmpty then begin ResponseStream.Append(Format('event: %s'#13, [EventName])); end; // actual message ResponseStream.Append('data: ' + EventData + #13#13); // render all the stuff RenderResponseStream; end; procedure TMVCRenderer.Render(const ACollection: IMVCList); begin Render(ACollection, stDefault); end; procedure TMVCRenderer.Render(const ACollection: IMVCList; const AType: TMVCSerializationType); begin if Assigned(ACollection) then Render(Serializer(GetContentType).SerializeCollection(TObject(ACollection), AType)) else raise EMVCException.Create('Can not render an empty collection.'); end; procedure TMVCRenderer.Render(const ATextWriter: TTextWriter; const AOwns: Boolean); begin if Assigned(ATextWriter) then begin try Render(ATextWriter.ToString); finally if AOwns then ATextWriter.Free; end; end else raise EMVCException.Create('Can not render an empty textwriter.'); end; procedure TMVCRenderer.Render(const AException: Exception; AExceptionItems: TList; const AOwns: Boolean); var S: string; R: TMVCErrorResponse; I: TMVCErrorResponseItem; begin try if AException is EMVCException then ResponseStatus(EMVCException(AException).HTTPErrorCode, AException.Message + ' [' + AException.Classname + ']'); if (GetContext.Response.StatusCode = HTTP_STATUS.OK) then ResponseStatus(HTTP_STATUS.InternalServerError, AException.Message + ' [' + AException.Classname + ']'); if (not GetContext.Request.IsAjax) and (GetContext.Request.ClientPrefer(TMVCMediaType.TEXT_HTML)) then begin SetContentType(TMVCMediaType.TEXT_HTML); ResponseStream.Clear; ResponseStream.Append ('') .Append('

' + Config[TMVCConfigKey.ServerName] + ': Error Raised

') .AppendFormat('
HTTP Return Code: %d' + sLineBreak, [GetContext.Response.StatusCode])
        .AppendFormat('HTTP Reason Text: "%s"
', [GetContext.Response.ReasonString]).Append('

')
        .AppendFormat('Exception Class Name : %s' + sLineBreak, [AException.Classname])
        .AppendFormat('Exception Message    : %s' + sLineBreak, [AException.Message]).Append('

'); if Assigned(AExceptionItems) and (AExceptionItems.Count > 0) then begin ResponseStream.Append('

');
        for S in AExceptionItems do
          ResponseStream.AppendLine('- ' + S);
        ResponseStream.Append('

'); end else ResponseStream.AppendLine('
No other information available
'); ResponseStream.Append(''); RenderResponseStream; end else begin R := TMVCErrorResponse.Create; try R.StatusCode := GetContext.Response.StatusCode; R.ReasonString := 'error'; R.Message := AException.Message; R.Classname := AException.Classname; if Assigned(AExceptionItems) and (AExceptionItems.Count > 0) then begin for S in AExceptionItems do begin I := TMVCErrorResponseItem.Create; I.Message := S; R.Items.Add(I); end; end; if Serializer(GetContentType, False) = nil then begin GetContext.Response.ContentType := GetConfig[TMVCConfigKey.DefaultContentType]; end; Render(R, False); finally R.Free; end; end; finally if AOwns then AExceptionItems.Free; end; end; procedure TMVCRenderer.Render(const AResponse: TMVCResponse; const AOwns: Boolean); begin if Assigned(AResponse) then begin try GetContext.Response.StatusCode := AResponse.StatusCode; Render(AResponse, False, stProperties); finally if AOwns then AResponse.Free; end; end else raise EMVCException.Create('Cannot render an empty response object.'); end; procedure TMVCRenderer.Render(const ADataSet: TDataSet; const ASerializationAction: TMVCDatasetSerializationAction); begin Render(ADataSet, True, ASerializationAction); end; procedure TMVCRenderer.Render(const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationAction: TMVCDatasetSerializationAction); begin Render(ADataSet, AOwns, dstAllRecords, ASerializationAction); end; procedure TMVCRenderer.Render(const AObject: TObject; const ASerializationAction: TMVCSerializationAction = nil); begin Render(AObject, True, ASerializationAction); end; procedure TMVCRenderer.Render( const ADataSet: TDataSet; const AOwns: Boolean; const AIgnoredFields: TMVCIgnoredList; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction); begin Render(ADataSet, AOwns, AIgnoredFields, ncLowerCase, ASerializationType, ASerializationAction); end; procedure TMVCRenderer.Render( const ADataSet: TDataSet; const AOwns: Boolean; const ASerializationType: TMVCDatasetSerializationType; const ASerializationAction: TMVCDatasetSerializationAction); begin Render(ADataSet, AOwns, [], ASerializationType, ASerializationAction); end; constructor TMVCResponse.Create; begin inherited Create; end; constructor TMVCErrorResponse.Create; begin inherited Create; FItems := TObjectList.Create(True); end; constructor TMVCResponse.Create(AStatusCode: Integer; AReasonString, AMessage: string); begin Create; StatusCode := AStatusCode; ReasonString := AReasonString; message := AMessage; end; destructor TMVCErrorResponse.Destroy; begin FItems.Free; inherited Destroy; end; { TMVCBaseView } constructor TMVCBaseViewEngine.Create(const AEngine: TMVCEngine; const AWebContext: TWebContext; const AViewModel: TMVCViewDataObject; const AViewDataSets: TObjectDictionary; const AContentType: string); begin inherited Create; Engine := AEngine; FWebContext := AWebContext; FViewModel := AViewModel; FViewDataSets := AViewDataSets; FContentType := AContentType; FOutput := EmptyStr; end; destructor TMVCBaseViewEngine.Destroy; begin inherited Destroy; end; function TMVCBaseViewEngine.GetRealFileName(const AViewName: string): string; var FileName: string; F: string; DefaultViewFileExtension: string; begin DefaultViewFileExtension := Config[TMVCConfigKey.DefaultViewFileExtension]; FileName := StringReplace(AViewName, '/', '\', [rfReplaceAll]); if (FileName = '\') then FileName := '\index.' + DefaultViewFileExtension else FileName := FileName + '.' + DefaultViewFileExtension; if DirectoryExists(Config[TMVCConfigKey.ViewPath]) then F := ExpandFileName(IncludeTrailingPathDelimiter(Config.Value[TMVCConfigKey.ViewPath]) + FileName) else F := ExpandFileName(IncludeTrailingPathDelimiter(GetApplicationFileNamePath + Config.Value[TMVCConfigKey.ViewPath]) + FileName); if not TFile.Exists(F) then FileName := ExpandFileName(IncludeTrailingPathDelimiter(GetApplicationFileNamePath + Config.Value[TMVCConfigKey.DocumentRoot]) + FileName) else FileName := F; if FileExists(FileName) then Result := FileName else Result := EmptyStr; end; initialization _IsShuttingDown := 0; _MVCGlobalActionParamsCache := TMVCStringObjectDictionary.Create; finalization FreeAndNil(_MVCGlobalActionParamsCache); end.