コード例 #1
0
    /// <summary>
    /// Sends the given file within response.
    /// </summary>
    /// <param name="file">File to send</param>
    protected void SendFile(CMSOutputResource file)
    {
        // Clear response.
        CookieHelper.ClearResponseCookies();
        Response.Clear();

        Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

        // Send the file
        if ((file != null) && (file.Data != null))
        {
            // Prepare response
            Response.ContentType = "text/css";

            // Client caching - only on the live site
            if (useClientCache && PortalContext.ViewMode.IsLiveSite() && (CacheHelper.CacheImageEnabled(CurrentSiteName)) && ETagsMatch(file.Etag, file.LastModified))
            {
                RespondNotModified(file.Etag, true);
                return;
            }

            if (useClientCache && PortalContext.ViewMode.IsLiveSite() && (CacheHelper.CacheImageEnabled(CurrentSiteName)))
            {
                DateTime expires = DateTime.Now;

                // Send last modified header to allow client caching
                Response.Cache.SetLastModified(file.LastModified);
                Response.Cache.SetCacheability(HttpCacheability.Public);
                if (DocumentBase.AllowClientCache())
                {
                    expires = DateTime.Now.AddMinutes(CacheHelper.CacheImageMinutes(CurrentSiteName));
                }

                Response.Cache.SetExpires(expires);
                Response.Cache.SetETag(file.Etag);
            }

            // Add the file data
            Response.Write(file.Data);
        }

        CompleteRequest();
    }
コード例 #2
0
    /// <summary>
    /// Sends the given file within response.
    /// </summary>
    /// <param name="file">File to send</param>
    protected void SendFile(CMSOutputForumAttachment file)
    {
        // Clear response.
        CookieHelper.ClearResponseCookies();
        Response.Clear();

        Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

        if (file != null)
        {
            // Redirect if the file should be redirected
            if (file.RedirectTo != "")
            {
                URLHelper.Redirect(file.RedirectTo, true, CurrentSiteName);
            }

            // Prepare etag
            string etag = file.LastModified.ToString();

            // Client caching - only on the live site
            if (useClientCache && AllowCache && CacheHelper.CacheImageEnabled(CurrentSiteName) && ETagsMatch(etag, file.LastModified))
            {
                RespondNotModified(etag, true);
                return;
            }

            // If physical file not present, try to load
            if (file.PhysicalFile == null)
            {
                EnsurePhysicalFile(outputFile);
            }

            // Ensure the file data if physical file not present
            if (!file.DataLoaded && (file.PhysicalFile == ""))
            {
                byte[] cachedData = GetCachedOutputData();
                if (file.EnsureData(cachedData))
                {
                    if ((cachedData == null) && (this.CacheMinutes > 0))
                    {
                        SaveOutputDataToCache(file.OutputData, GetOutputDataDependency(file.ForumAttachment));
                    }
                }
            }

            // Send the file
            if ((file.OutputData != null) || (file.PhysicalFile != ""))
            {
                // Setup the mime type - Fix the special types
                string mimetype  = file.MimeType;
                string extension = file.ForumAttachment.AttachmentFileExtension;
                switch (extension.ToLower())
                {
                case ".flv":
                    mimetype = "video/x-flv";
                    break;
                }

                // Prepare response
                Response.ContentType = mimetype;
                SetDisposition(file.ForumAttachment.AttachmentFileName, extension);

                // Set if resumable downloads should be supported
                AcceptRange = !IsExtensionExcludedFromRanges(extension);

                if (useClientCache && AllowCache && (CacheHelper.CacheImageEnabled(CurrentSiteName)))
                {
                    DateTime expires = DateTime.Now;

                    // Send last modified header to allow client caching
                    Response.Cache.SetLastModified(file.LastModified);

                    Response.Cache.SetCacheability(HttpCacheability.Public);
                    if (DocumentBase.AllowClientCache() && DocumentBase.UseFullClientCache)
                    {
                        expires = DateTime.Now.AddMinutes(CacheHelper.CacheImageMinutes(CurrentSiteName));
                    }

                    Response.Cache.SetExpires(expires);
                    Response.Cache.SetETag(etag);
                }

                // Add the file data
                if ((file.PhysicalFile != "") && (file.OutputData == null))
                {
                    // If the output data should be cached, return the output data
                    bool cacheOutputData = false;
                    if (file.ForumAttachment != null)
                    {
                        cacheOutputData = CacheHelper.CacheImageAllowed(CurrentSiteName, file.ForumAttachment.AttachmentFileSize);
                    }

                    // Stream the file from the file system
                    file.OutputData = WriteFile(file.PhysicalFile, cacheOutputData);
                }
                else
                {
                    // Use output data of the file in memory if present
                    WriteBytes(file.OutputData);
                }
            }
            else
            {
                NotFound();
            }
        }
        else
        {
            NotFound();
        }

        CompleteRequest();
        //RequestHelper.EndResponse();
    }
コード例 #3
0
    /// <summary>
    /// Sends the given file within response.
    /// </summary>
    /// <param name="file">File to send</param>
    protected void SendFile(CMSOutputSharePointFile file)
    {
        // Clear response.
        CookieHelper.ClearResponseCookies();
        Response.Clear();

        Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

        if ((file != null) && file.IsValid)
        {
            // Prepare etag in ""
            string etag = "\"" + file.SharePointFilePath + "\"";

            // Client caching - only on the live site
            if (useClientCache && AllowCache && CacheHelper.CacheImageEnabled(CurrentSiteName) && ETagsMatch(etag, file.LastModified))
            {
                RespondNotModified(etag, true);
                return;
            }

            // If the output data should be cached, return the output data
            bool cacheOutputData = false;
            if (file.OutputData != null)
            {
                cacheOutputData = CacheHelper.CacheImageAllowed(CurrentSiteName, file.OutputData.Length);
            }

            // Ensure the file data
            if (!file.DataLoaded)
            {
                byte[] cachedData = GetCachedOutputData();

                // Ensure data are retrieved from SharePoint
                if (file.EnsureData(cachedData))
                {
                    if ((cachedData == null) && cacheOutputData)
                    {
                        SaveOutputDataToCache(file.OutputData, null);
                    }
                }
            }

            // Send the file
            if (file.OutputData != null)
            {
                byte[] data = null;

                // Check if the request is for partial data (Range HTTP header)
                long[,] rangePosition = GetRange(file.OutputData.Length, HttpContext.Current);

                // Send all file contens
                if (rangePosition.GetUpperBound(0) == 0)
                {
                    // Setup the mime type - Fix the special types
                    string mimetype = file.MimeType;
                    switch (file.FileExtension.ToLower())
                    {
                    case ".flv":
                        mimetype = "video/x-flv";
                        break;
                    }

                    // Prepare response
                    Response.ContentType = mimetype;

                    // get file name without the path
                    string fileName = Path.GetFileName(file.SharePointFilePath);

                    SetDisposition(fileName, file.FileExtension);

                    // Setup Etag property
                    ETag = etag;

                    // Set if resumable downloads should be supported
                    AcceptRange = !IsExtensionExcludedFromRanges(file.FileExtension);

                    if (useClientCache && AllowCache && (CacheHelper.CacheImageEnabled(CurrentSiteName)))
                    {
                        DateTime expires = DateTime.Now;

                        // Send last modified header to allow client caching
                        Response.Cache.SetLastModified(file.LastModified);

                        Response.Cache.SetCacheability(HttpCacheability.Public);
                        if (DocumentBase.AllowClientCache() && DocumentBase.UseFullClientCache)
                        {
                            expires = DateTime.Now.AddMinutes(CacheHelper.CacheImageMinutes(CurrentSiteName));
                        }


                        Response.Cache.SetExpires(expires);
                        Response.Cache.SetETag(etag);
                    }

                    data = file.OutputData;
                }
                // Send partial contens
                else
                {
                    data = new byte[file.OutputData.Length - rangePosition[0, RANGE_START]];

                    // Get part of file
                    Array.Copy(file.OutputData, rangePosition[0, RANGE_START], data, 0, data.Length);
                }

                // Use output data of the file in memory if present
                WriteBytes(data);
            }
            else
            {
                NotFound();
            }
        }
        else
        {
            NotFound();
        }

        CompleteRequest();
    }