/// <summary>
/// Create the page requested and send the context information to the page.
/// </summary>
/// <param name="baseNameSpace">The base namespace of the code behind resource.</param>
/// <param name="assemblyName">The assembly name,from where the namespace belongs.</param>
/// <param name="urlFilePath">The path and file name of the resource.</param>
/// <param name="context">Provides access to the request and response objects.</param>
/// <returns>True if the page code behind is found; else false;</returns>
public static bool PageInstance(string baseNameSpace, string assemblyName, string urlFilePath, IHttpContext context)
{
// Page base.
HttpPageBase page = null;
bool foundPage = true;
try
{
// Get the name of the file without extension.
string fileNameWithoutEx = System.IO.Path.GetFileNameWithoutExtension(urlFilePath);
try
{
// Attempt to create the instnce of the page.
Type pageType = Type.GetType(baseNameSpace.TrimEnd('.') + "." + fileNameWithoutEx + ", " + assemblyName, true, true);
page = (HttpPageBase)Activator.CreateInstance(pageType);
}
catch (Exception)
{
// If error
foundPage = false;
page = null;
}
// The page hierachy initialiser.
HttpPageBase.PageInitialiser(page, urlFilePath, context);
return(foundPage);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// The page hierachy initialiser.
/// </summary>
/// <param name="page">The current page instance.</param>
/// <param name="urlFilePath">The local file name and full path of the resource.</param>
/// <param name="context">Provides access to the request and response objects.</param>
public static void PageInitialiser(HttpPageBase page, string urlFilePath, IHttpContext context)
{
// Make sure that the page exists.
if (page != null)
{
System.IO.Stream outputResponse = null;
System.IO.Stream inputRequest = null;
try
{
// Create a new page context.
HttpPageContext pageContext = new HttpPageContext();
pageContext.IsValid = true;
pageContext.OverrideRequestResponse = false;
pageContext.ProcessOnPostBack = true;
// Assign the initial values.
page.Request = context.HttpContext.Request;
page.Response = context.HttpContext.Response;
page.IsPostBack = context.ActiveProcess.IsPostBack;
page.UrlFilePath = urlFilePath;
page.User = context.HttpContext.User;
// Execute the page hierachy.
page.OnInit(pageContext);
// If true then continue
if (pageContext.IsValid)
{
// Assign the current active processing.
page.ActiveProcessing = context.ActiveProcess;
// Execute the pre-processing event.
page.OnPreProcess(pageContext);
if (pageContext.ProcessOnPostBack)
{
// If post back.
if (context.ActiveProcess.IsPostBack)
{
// Get all the post back data.
context.ActiveProcess.ProcessPostBack(page.Request, page.UploadDirectory);
page.Form = context.ActiveProcess.Form;
page.UploadFiles = context.ActiveProcess.UploadFiles;
}
}
// Execute the page load event.
page.OnLoad(pageContext);
if (!pageContext.OverrideRequestResponse)
{
// If alternative content is to be sent.
if (page.AlternativeContent != null)
{
// Get the request, response stream.
outputResponse = context.HttpContext.Response.OutputStream;
// Transfer the data to the client.
inputRequest = HttpResponseContent.CreateResponseStream(page.AlternativeContent);
HttpResponseContent.TransferResponse(inputRequest, outputResponse);
}
else
{
// Get the request, response stream.
outputResponse = context.HttpContext.Response.OutputStream;
// Get the response html. Create the response. Transfer the data.
byte[] responseResourceHtmlData = HttpResponseContent.ResourceFound(context.HttpContext.Response, context.ActiveProcess,
urlFilePath, System.IO.Path.GetExtension(urlFilePath).TrimStart('.'));
// Transfer the data to the client.
inputRequest = HttpResponseContent.CreateResponseStream(responseResourceHtmlData);
HttpResponseContent.TransferResponse(inputRequest, outputResponse);
}
}
}
}
catch (Exception)
{
throw;
}
finally
{
try
{
if (inputRequest != null)
{
inputRequest.Close();
}
}
catch (Exception ex) { page.Exception = ex; }
try
{
if (outputResponse != null)
{
outputResponse.Close();
}
}
catch (Exception ex) { page.Exception = ex; }
}
}
}
/// <summary>
/// Process the http server resource request.
/// </summary>
/// <param name="context">Provides access to the request and response objects.</param>
public virtual void HttpServiceProcessRequest(IHttpContext context)
{
System.IO.Stream outputResponse = null;
System.IO.Stream inputRequest = null;
System.IO.MemoryStream memoryOutput = null;
System.IO.MemoryStream memoryInput = null;
HttpListenerRequest httpRequest = null;
HttpListenerResponse httpResponse = null;
try
{
// Get the upload file directory.
string serviceDirectory = BaseServicePath.TrimEnd('\\') + "\\";
string uploadFilePath = null;
bool foundInDownload = false;
// Get the request and response context.
httpRequest = context.HttpContext.Request;
httpResponse = context.HttpContext.Response;
// Get the current resposne stream.
outputResponse = httpResponse.OutputStream;
// Get the current request filename and directory information.
string absolutePath = HttpUtility.UrlDecode(httpRequest.Url.AbsolutePath.TrimStart('/').Replace("/", "\\"));
string urlFilePath = serviceDirectory + absolutePath;
bool fileExists = System.IO.File.Exists(urlFilePath);
// Look in the base download path for the file.
if (!fileExists)
{
// If an upload path has been supplied.
if (!string.IsNullOrEmpty(BaseUploadPath))
{
// Get the upload directory.
string uploadDirectory = BaseUploadPath.TrimEnd('\\') + "\\";
string[] directories = Path.GetDirectoryName(absolutePath).Split(new char[] { '\\' });
// Get the directory query string.
string directory = "";
bool foundStart = false;
foreach (string item in directories)
{
// Find the starting virtual directory name associated
// with the current service name.
if (item.ToLower() == _serviceVirtualName.ToLower())
{
foundStart = true;
}
// Build the directory.
if (foundStart)
{
directory += item + "\\";
}
}
// Get the download file path.
uploadFilePath = uploadDirectory +
(string.IsNullOrEmpty(directory) ? "" : directory.ToLower().Replace(_serviceVirtualName.ToLower() + "\\", "").TrimEnd('\\') + "\\") +
System.IO.Path.GetFileName(urlFilePath);
// Does the file exist.
fileExists = System.IO.File.Exists(uploadFilePath);
// If the file is found in the download path.
if (fileExists)
{
foundInDownload = true;
}
}
}
// If the file does not exists then try to load
// the default.htm file.
if (!fileExists)
{
string newUrlFilePath = urlFilePath.TrimEnd('\\') + "\\";
string newFileName = System.IO.Path.GetFileName(newUrlFilePath);
// Create the new default url file name.
if (String.IsNullOrEmpty(newFileName))
{
urlFilePath = newUrlFilePath + "default.htm";
fileExists = System.IO.File.Exists(urlFilePath);
}
}
// Does the resource exits on the server.
if (fileExists)
{
// Get the extension of the resource.
string extension = System.IO.Path.GetExtension(urlFilePath).TrimStart(new char[] { '.' });
string fileName = System.IO.Path.GetFileName(urlFilePath);
string[] extensions = context.ActiveProcess.AllowedExtensions();
// Get the maximum upload file size.
int maxUploadFileSize = MaxBaseContentSize;
// If the file is not too large.
if (httpRequest.ContentLength64 >= maxUploadFileSize)
{
// Get the response html. Create the response. Transfer the data.
byte[] responseMaxHtmlData = HttpResponseContent.MaxContentLength(httpResponse, maxUploadFileSize);
HttpResponseContent.TransferResponse(HttpResponseContent.CreateResponseStream(responseMaxHtmlData), outputResponse);
}
else
{
// Extension is allowed and the resource is
// not a download file.
if (extensions.Count(u => u.Contains(extension)) > 0 && !foundInDownload)
{
// Execute the correct page code behind.
bool ret = HttpPageBase.PageInstance(BaseNameSpace, AssemblyName, urlFilePath, context);
// If the resource code behind does not exist
// then load only the content data.
if (!ret)
{
// If no code behind then load the resource.
byte[] responseResourceHtmlData = HttpResponseContent.ResourceFound(httpResponse, context.ActiveProcess, urlFilePath, extension);
HttpResponseContent.TransferResponse(HttpResponseContent.CreateResponseStream(responseResourceHtmlData), outputResponse);
}
}
else
{
// Get the response html. Create the response. Transfer the data.
byte[] responseFoundAttachmentHtmlData = HttpResponseContent.ResourceAttachment(httpResponse, uploadFilePath, extension, fileName);
HttpResponseContent.TransferResponse(HttpResponseContent.CreateResponseStream(responseFoundAttachmentHtmlData), outputResponse);
}
}
}
else
{
// Get the response html. Create the response. Transfer the data.
byte[] responseNotFoundHtmlData = HttpResponseContent.FileNotFound(httpResponse);
HttpResponseContent.TransferResponse(HttpResponseContent.CreateResponseStream(responseNotFoundHtmlData), outputResponse);
}
}
catch (Exception ex)
{
try
{
if (httpResponse != null)
{
// Get the response html. Create the response. Transfer the data.
byte[] responseErrorHtmlData = HttpResponseContent.OnError(httpResponse, ex);
memoryInput = HttpResponseContent.CreateResponseStream(responseErrorHtmlData);
// If the response stream has already been activated.
if (outputResponse == null)
{
// Transfer the data.
outputResponse = httpResponse.OutputStream;
HttpResponseContent.TransferResponse(memoryInput, outputResponse);
}
else
{
// Send the response.
HttpResponseContent.TransferResponse(memoryInput, outputResponse);
}
}
}
catch { }
throw;
}
finally
{
try
{
if (inputRequest != null)
{
inputRequest.Close();
}
}
catch { }
try
{
if (outputResponse != null)
{
outputResponse.Close();
}
}
catch { }
try
{
if (memoryOutput != null)
{
memoryOutput.Close();
}
}
catch { }
try
{
if (memoryInput != null)
{
memoryInput.Close();
}
}
catch { }
}
}
