protected void Page_Load(object sender, EventArgs e)
{
string backupName = Request.Params["backup"];
string itemType = Request.Params["type"];
string container = Request.Params["container"];
string relativeDirectory = Request.Params["rel"];
string filename = Request.Params["file"];
string rootDirectory = String.Empty;
string filepath = AutoUpdateManager.GetFilePath(itemType, container, relativeDirectory, filename);
UpdateItem itemToDownload = null;
if (String.IsNullOrEmpty(backupName) == false) // Download the file from a backup.
{
if (AutoUpdateManager.IsFilenameOrDirectorySafe(backupName) == false)
{
throw new Exception("backup name is invalid.");
}
BackupItems backupItems = AutoUpdateManager.GetFilesInBackup(backupName);
if (itemType == "Packages")
{
itemToDownload = backupItems.PackageFiles.FirstOrDefault(p => p.Name == filename && p.PackageName == container && p.RelativeDirectory == relativeDirectory);
}
else
{
throw new Exception("Unsupported itemType: " + itemType);
}
}
else // Download the file from a package.
{
if (itemType == "Packages")
{
List <UpdateItem> itemsInPackage = AutoUpdateManager.GetFilesInUpdatePackage(container);
itemToDownload = itemsInPackage.FirstOrDefault(p => p.Name == filename && p.PackageName == container && p.RelativeDirectory == relativeDirectory);
}
else
{
throw new Exception("Unsupported itemType: " + itemType);
}
}
if (itemToDownload == null)
{
Response.StatusCode = 404;
Response.End();
}
string mimeType = Utility.GetMimeType(Path.GetExtension(itemToDownload.Name));
byte[] outputBytes = File.ReadAllBytes(itemToDownload.FileInfo.FullName);
Response.ContentType = mimeType;
Response.AddHeader("Content-Disposition", "attachment; filename=" + itemToDownload.Name);
Response.AddHeader("ContentLength", outputBytes.Length.ToString());
Response.BinaryWrite(outputBytes);
}