NEW SAMPLE: Render Binary Contents

samples/render_binary_contents/ControllerU.pas

@@ -0,0 +1,138 @@
+unit ControllerU;
+
+interface
+
+uses
+  MVCFramework, MVCFramework.Commons, MVCFramework.Serializer.Commons, System.Generics.Collections,
+  System.Classes;
+
+type
+  [MVCPath('/api')]
+  TMyController = class(TMVCController)
+  public
+    [MVCPath('/files/($FileName)')]
+    [MVCHTTPMethod([httpGET])]
+    function GetFileByName(const FileName: String): TStream;
+
+    [MVCPath('/files2/($FileName)')]
+    [MVCHTTPMethod([httpGET])]
+    procedure GetStreamByFileName(const FileName: String);
+  end;
+
+implementation
+
+uses
+  System.SysUtils,
+  System.IOUtils,
+  MVCFramework.Logger,
+  System.StrUtils;
+
+{ TMyController }
+
+{
+  This action show how to return binary contents using a functional action (the action is a function)
+}
+function TMyController.GetFileByName(const FileName: String): TStream;
+var
+  lPath: String;
+  lExt: String;
+begin
+  lPath := TPath.Combine(TPath.Combine(TDirectory.GetParent(AppPath), 'files_repository'), FileName);
+  lPath := TPath.GetFullPath(lPath);
+  if not lPath.StartsWith(AppPath) then // directory traversal check
+  begin
+    raise EMVCException.Create(HTTP_STATUS.BadRequest, 'Invalid path');
+  end;
+
+  LogD(Context.QualifiedClassName + ': ' + lPath);
+
+  if not TFile.Exists(lPath) then
+  begin
+    raise EMVCException.Create(HTTP_STATUS.NotFound, 'File not found');
+  end;
+
+  lExt := TPath.GetExtension(lPath).ToLower;
+
+  if lExt = '.jpg' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.IMAGE_JPEG;
+  end
+  else if lExt = '.txt' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.TEXT_PLAIN;
+  end
+  else if lExt = '.pdf' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.APPLICATION_PDF;
+  end
+  else if lExt = '.png' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.IMAGE_PNG;
+  end
+  else if lExt = '.html' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.TEXT_HTML;
+  end
+  else
+  begin
+    Context.Response.ContentType := TMVCMediaType.APPLICATION_OCTET_STREAM;
+  end;
+  StatusCode := HTTP_STATUS.OK;
+  Result := TFileStream.Create(lPath, fmOpenRead, fmShareDenyNone)
+end;
+
+
+{
+  This action show how to return binary contents using a classic action (the action is a procedure)
+}
+procedure TMyController.GetStreamByFileName(const FileName: String);
+var
+  lPath: String;
+  lExt: String;
+begin
+  lPath := TPath.Combine(TPath.Combine(TDirectory.GetParent(AppPath), 'files_repository'), FileName);
+  lPath := TPath.GetFullPath(lPath);
+  if not lPath.StartsWith(AppPath) then // directory traversal check
+  begin
+    raise EMVCException.Create(HTTP_STATUS.BadRequest, 'Invalid path');
+  end;
+
+  LogD(Context.QualifiedClassName + ': ' + lPath);
+
+  if not TFile.Exists(lPath) then
+  begin
+    raise EMVCException.Create(HTTP_STATUS.NotFound, 'File not found');
+  end;
+
+  lExt := TPath.GetExtension(lPath).ToLower;
+
+  if lExt = '.jpg' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.IMAGE_JPEG;
+  end
+  else if lExt = '.txt' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.TEXT_PLAIN;
+  end
+  else if lExt = '.pdf' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.APPLICATION_PDF;
+  end
+  else if lExt = '.png' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.IMAGE_PNG;
+  end
+  else if lExt = '.html' then
+  begin
+    Context.Response.ContentType := TMVCMediaType.TEXT_HTML;
+  end
+  else
+  begin
+    Context.Response.ContentType := TMVCMediaType.APPLICATION_OCTET_STREAM;
+  end;
+  StatusCode := HTTP_STATUS.OK;
+  SendFile(lPath);
+end;
+
+end.
+

samples/render_binary_contents/WebModuleU.dfm

@@ -0,0 +1,7 @@
+object MyWebModule: TMyWebModule
+  OnCreate = WebModuleCreate
+  OnDestroy = WebModuleDestroy
+  Actions = <>
+  Height = 230
+  Width = 415
+end

samples/render_binary_contents/WebModuleU.pas

@@ -0,0 +1,82 @@
+unit WebModuleU;
+
+interface
+
+uses 
+  System.SysUtils,
+  System.Classes,
+  Web.HTTPApp,
+  MVCFramework;
+
+type
+  TMyWebModule = class(TWebModule)
+    procedure WebModuleCreate(Sender: TObject);
+    procedure WebModuleDestroy(Sender: TObject);
+  private
+    fMVC: TMVCEngine;
+  end;
+
+var
+  WebModuleClass: TComponentClass = TMyWebModule;
+
+implementation
+
+{$R *.dfm}
+
+uses
+  System.IOUtils,
+  MVCFramework.Commons,
+  MVCFramework.Middleware.ActiveRecord,
+  MVCFramework.Middleware.StaticFiles,
+  MVCFramework.Middleware.Analytics,
+  MVCFramework.Middleware.Trace,
+  MVCFramework.Middleware.CORS,
+  MVCFramework.Middleware.ETag,
+  MVCFramework.Middleware.Compression, ControllerU;
+
+procedure TMyWebModule.WebModuleCreate(Sender: TObject);
+begin
+  FMVC := TMVCEngine.Create(Self,
+    procedure(Config: TMVCConfig)
+    begin
+      // session timeout (0 means session cookie)
+      Config[TMVCConfigKey.SessionTimeout] := dotEnv.Env('dmvc.session_timeout', '0');
+      //default content-type
+      Config[TMVCConfigKey.DefaultContentType] := dotEnv.Env('dmvc.default.content_type', TMVCConstants.DEFAULT_CONTENT_TYPE);
+      //default content charset
+      Config[TMVCConfigKey.DefaultContentCharset] := dotEnv.Env('dmvc.default.content_charset', TMVCConstants.DEFAULT_CONTENT_CHARSET);
+      //unhandled actions are permitted?
+      Config[TMVCConfigKey.AllowUnhandledAction] := dotEnv.Env('dmvc.allow_unhandled_actions', 'false');
+      //enables or not system controllers loading (available only from localhost requests)
+      Config[TMVCConfigKey.LoadSystemControllers] := dotEnv.Env('dmvc.load_system_controllers', 'true');
+      //default view file extension
+      Config[TMVCConfigKey.DefaultViewFileExtension] := dotEnv.Env('dmvc.default.view_file_extension', 'html');
+      //view path
+      Config[TMVCConfigKey.ViewPath] := dotEnv.Env('dmvc.view_path', 'templates');
+      //use cache for server side views (use "false" in debug and "true" in production for faster performances
+      Config[TMVCConfigKey.ViewCache] := dotEnv.Env('dmvc.view_cache', 'false');
+      //Max Record Count for automatic Entities CRUD
+      Config[TMVCConfigKey.MaxEntitiesRecordCount] := dotEnv.Env('dmvc.max_entities_record_count', IntToStr(TMVCConstants.MAX_RECORD_COUNT));
+      //Enable Server Signature in response
+      Config[TMVCConfigKey.ExposeServerSignature] := dotEnv.Env('dmvc.expose_server_signature', 'false');
+      //Enable X-Powered-By Header in response
+      Config[TMVCConfigKey.ExposeXPoweredBy] := dotEnv.Env('dmvc.expose_x_powered_by', 'true');
+      // Max request size in bytes
+      Config[TMVCConfigKey.MaxRequestSize] := dotEnv.Env('dmvc.max_request_size', IntToStr(TMVCConstants.DEFAULT_MAX_REQUEST_SIZE));
+    end);
+
+  // Controllers
+  FMVC.AddController(TMyController);
+  // Controllers - END
+
+  // Middleware
+  // Middleware - END
+
+end;
+
+procedure TMyWebModule.WebModuleDestroy(Sender: TObject);
+begin
+  FMVC.Free;
+end;
+
+end.

samples/render_binary_contents/render_binary_contents.dpr

@@ -0,0 +1,83 @@
+program render_binary_contents;
+
+{$APPTYPE CONSOLE}
+
+uses
+  System.SysUtils,
+  Web.ReqMulti,
+  Web.WebReq,
+  Web.WebBroker,
+  IdContext,
+  IdHTTPWebBrokerBridge,
+  MVCFramework,
+  MVCFramework.Logger,
+  MVCFramework.DotEnv,
+  MVCFramework.Commons,
+  MVCFramework.Serializer.Commons,
+  MVCFramework.Signal,
+  ControllerU in 'ControllerU.pas',
+  WebModuleU in 'WebModuleU.pas' {MyWebModule: TWebModule};
+
+{$R *.res}
+
+procedure RunServer(APort: Integer);
+var
+  LServer: TIdHTTPWebBrokerBridge;
+begin
+  LServer := TIdHTTPWebBrokerBridge.Create(nil);
+  try
+    LServer.OnParseAuthentication := TMVCParseAuthentication.OnParseAuthentication;
+    LServer.DefaultPort := APort;
+    LServer.KeepAlive := dotEnv.Env('dmvc.indy.keep_alive', True);
+    LServer.MaxConnections := dotEnv.Env('dmvc.webbroker.max_connections', 0);
+    LServer.ListenQueue := dotEnv.Env('dmvc.indy.listen_queue', 500);
+    LServer.Active := True;
+    LogI('Listening on port ' + APort.ToString);
+    LogI('Application started. Press Ctrl+C to shut down.');
+    WaitForTerminationSignal;
+    EnterInShutdownState;
+    LServer.Active := False;
+  finally
+    LServer.Free;
+  end;
+end;
+
+begin
+  { Enable ReportMemoryLeaksOnShutdown during debug }
+  // ReportMemoryLeaksOnShutdown := True;
+  IsMultiThread := True;
+
+  // DMVCFramework Specific Configurations
+  //   When MVCSerializeNulls = True empty nullables and nil are serialized as json null.
+  //   When MVCSerializeNulls = False empty nullables and nil are not serialized at all.
+  MVCSerializeNulls := True;
+
+  // MVCNameCaseDefault defines the name case of property names generated by the serializers.
+  //   Possibile values are: ncAsIs, ncUpperCase, ncLowerCase (default), ncCamelCase, ncPascalCase, ncSnakeCase
+  MVCNameCaseDefault := TMVCNameCase.ncLowerCase;
+
+  // UseConsoleLogger defines if logs must be emitted to also the console (if available).
+  UseConsoleLogger := True;
+
+  LogI('** DMVCFramework Server ** build ' + DMVCFRAMEWORK_VERSION);
+
+  try
+    if WebRequestHandler <> nil then
+      WebRequestHandler.WebModuleClass := WebModuleClass;
+
+    WebRequestHandlerProc.MaxConnections := dotEnv.Env('dmvc.handler.max_connections', 1024);
+
+{$IF CompilerVersion >= 34} //SYDNEY+
+    if dotEnv.Env('dmvc.profiler.enabled', false) then
+    begin
+      Profiler.ProfileLogger := Log;
+      Profiler.WarningThreshold := dotEnv.Env('dmvc.profiler.warning_threshold', 2000);
+    end;
+{$ENDIF}
+
+    RunServer(dotEnv.Env('dmvc.server.port', 8080));
+  except
+    on E: Exception do
+      LogF(E.ClassName + ': ' + E.Message);
+  end;
+end.