/// <summary>
/// Generates link for the file with required parameters.
/// </summary>
/// <param name="userID">A string containing the user id.</param>
/// <param name="fileName">A string containing the file name.</param>
/// <param name="fileClassfication">An enum that is specifying the file classification.</param>
/// <param name="requiredDimension">An unsigned integer specifying the required dimensions.</param>
/// <param name="senderID">A string containing sender user id. Required only getting url of offline file.</param>
/// <remarks>Dimensions should be greater than 0 and less than the actual dimension of the file. If dimension is 0 or greater than the actual dimension of the image, image with actual dimensions will be returned.</remarks>
/// <returns>A string containing the url for getting the file.</returns>
public static string BuildFileUrl(string fileServer, string fileName, FileCategory fileClassfication, MediaType mediaType)
{
string fileStorePort = ConfigurationManager.AppSettings[NeeoConstants.FileStorePort];
string imageHandler = ConfigurationManager.AppSettings[NeeoConstants.ImageHandler];
string webProtocol = ConfigurationManager.AppSettings[NeeoConstants.WebProtocol];
string idQString = "?id=" + fileName;
string fileClassificationQString = "&fc=" + fileClassfication.ToString("D");
string mediaTypeQString = "&mt=" + mediaType.ToString("D");
string signatureQString = "&sig=" + NeeoUtility.GenerateSignature(fileName + fileClassfication.ToString("D") + mediaType.ToString("D"));
string url = webProtocol + "://" + fileServer + (NeeoUtility.IsNullOrEmpty(fileStorePort) == false ? (":" + fileStorePort + "/") : "/") + imageHandler + idQString + fileClassificationQString + mediaTypeQString + signatureQString;
return(url);
}
/// <summary>
/// Processes the http request to send the required response.
/// </summary>
/// <remarks>It is used to send image data to the requester if the request </remarks>
/// <param name="context">An object holding http context object for setting up response header on sending response.</param>
public void ProcessRequest(HttpContext context)
{
_httpContext = context;
LibNeeo.IO.File file = null;
ulong timeStamp = 0;
short fileClass = 0;
if (!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["id"]) &&
!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["sig"]) &&
!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["fc"]) &&
!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["mt"]))
{
string fileID = HttpUtility.UrlEncode(context.Request.QueryString["id"].ToString());
FileCategory fileCategory = (FileCategory)Convert.ToInt16(context.Request.QueryString["fc"]);
MediaType mediaType = (MediaType)Convert.ToInt16(context.Request.QueryString["mt"]);
if (NeeoUtility.GenerateSignature(fileID + fileCategory.ToString("D") + mediaType.ToString("D")) == context.Request.QueryString["sig"].ToString())
{
file = GetRequestedFile(fileID, fileCategory, mediaType);
if (file != null)
{
SetResponseWithFileData(file);
}
else
{
Logger.LogManager.CurrentInstance.ErrorLogger.LogError(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, "File ID: " + fileID + ", File Category: Shared, Status: File does not exists.");
}
}
}
else if (!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["id"]) &&
!NeeoUtility.IsNullOrEmpty(context.Request.QueryString["sig"]))
{
// This part is to give backward compatibility for shared file service given with release 3
string fileID = HttpUtility.UrlEncode(context.Request.QueryString["id"].ToString());
if (NeeoUtility.GenerateSignature(fileID) == context.Request.QueryString["sig"].ToString())
{
file = GetRequestedFile(fileID, FileCategory.Shared, MediaType.Image);
if (file != null)
{
SetResponseWithFileData(file);
}
else
{
Logger.LogManager.CurrentInstance.ErrorLogger.LogError(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, "File ID: " + fileID + ", File Category: Group, Status: File does not exists.");
}
}
}
SetResponseHeaders((int)HttpStatusCode.BadRequest);
}
public HttpResponseMessage Get([FromUri] FileRequest fileRequest)
{
if (!ModelState.IsValid)
{
return(Request.CreateResponse(HttpStatusCode.BadRequest, "Bad Request"));
}
if (NeeoUtility.GenerateSignature(fileRequest.Name + fileRequest.FileCategory.ToString("D") + fileRequest.MediaType.ToString("D")) == fileRequest.Signature)
{
byte[] fileBytes;
var file = GetRequestedFile(fileRequest);
if (file != null)
{
if (Request.Headers.Range != null)
{
var delimeter = new char[] { '-', '=' };
var rangeValues = Request.Headers.Range.ToString().Split(delimeter);
if (rangeValues.Length != 3)
{
return(Request.CreateResponse(HttpStatusCode.BadRequest));
}
if (!((Convert.ToInt64(rangeValues[1]) <= Convert.ToInt64(rangeValues[2])) && (Convert.ToInt64(rangeValues[2]) <= file.Info.Length)))
{
return(Request.CreateResponse(HttpStatusCode.BadRequest));
}
fileBytes = File.GetBytesArray(file.Info.FullPath, Convert.ToInt32(rangeValues[1]),
Convert.ToInt32(rangeValues[2]));
}
else
{
fileBytes = File.GetBytesArray(file.Info.FullPath);
}
var response = Request.CreateResponse(HttpStatusCode.OK);
response.Content = new ByteArrayContent(fileBytes);
//new StreamContent(File.GetStream(file.Info.FullPath));
//response.Content = new StreamContent(new FileStream(fileInfo.FullPath,FileMode.Open));
response.Content.Headers.ContentType =
new MediaTypeHeaderValue(
MimeTypeMapping.GetMimeType(file.Info.Extension).GetDescription());
return(response);
}
Logger.LogManager.CurrentInstance.ErrorLogger.LogError(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, "File ID: " + fileRequest.FullName + ", File Category: Shared, Status: File does not exists.");
}
return(Request.CreateResponse(HttpStatusCode.BadRequest, "Bad Request"));
}