protected VirtualFileInfo GetFileInfoInternal(string virtualFilePath, bool mustExist, out string absolutePath)
{
try
{
if (String.IsNullOrEmpty(virtualFilePath))
{
VfsLog.Debug("File request without file path received.");
throw new ResourceAccessException("An empty or null string is not a valid file path");
}
//make sure we operate on absolute paths
absolutePath = PathUtil.GetAbsolutePath(virtualFilePath, RootDirectory);
if (IsRootPath(absolutePath))
{
VfsLog.Debug("Blocked file request with path '{0}' (resolves to root directory).", virtualFilePath);
throw new ResourceAccessException("Invalid path submitted: " + virtualFilePath);
}
var fi = new FileInfo(absolutePath);
VirtualFileInfo fileInfo = fi.CreateFileResourceInfo();
//convert to relative paths if required (also prevents qualified paths in validation exceptions)
if (UseRelativePaths)
{
fileInfo.MakePathsRelativeTo(RootDirectory);
}
//make sure the user is allowed to access the resource
ValidateResourceAccess(fileInfo);
//verify file exists on FS
if (mustExist)
{
fileInfo.VerifyFileExists(RootDirectory);
}
return(fileInfo);
}
catch (VfsException)
{
//just bubble internal exceptions
throw;
}
catch (Exception e)
{
VfsLog.Debug(e, "Could not create file based on path '{0}' with root '{1}'", virtualFilePath,
RootDirectory);
throw new ResourceAccessException("Invalid path submitted: " + virtualFilePath);
}
}
