public IActionResult Upload(SubmissionViewModel newSub)
{
var tasks = _tasksService.GetTasks();
ViewBag.Tasks = tasks;
newSub.Id = new Guid();
newSub.Owner = HttpContext.User.Identity.Name;
newSub.TimeSubmitted = DateTime.Now;
if (string.IsNullOrEmpty(newSub.FileName))
{
_logger.LogError("Title is empty or NULL");
return(View("Error", new ErrorViewModel()
{
Message = "Title cannot be empty"
}));
}
else
{
TempData["message"] = "Task created successfully";
_submissionService.AddSubmission(newSub);
return(View());
}
}
//[Authorize]
public IActionResult Create(IFormFile file, SubmissionViewModel data, string id)
{
try
{
string urlEnc = Encryption.SymmetricDecrypt(id);
Guid decId = Guid.Parse(urlEnc);
var memId = _membersService.GetMember(User.Identity.Name);
if (file != null)
{
data.task = _tasksService.GetTask(decId);
if (data.task.deadline > DateTime.Now)
{
string uniqueFilename;
if (System.IO.Path.GetExtension(file.FileName) == ".pdf" && file.Length < 1048576)
{
byte[] whiteList = new byte[] { 37, 80, 68, 70 };
if (file != null)
{
MemoryStream ms = new MemoryStream();
using (var f = file.OpenReadStream())
{
byte[] buffer = new byte[4];
f.Read(buffer, 0, 4);
for (int i = 0; i < whiteList.Length; i++)
{
if (whiteList[i] == buffer[i])
{
}
else
{
ModelState.AddModelError("file", "Invalid file");
_logger.LogError("Invalid file |" + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(View());
}
}
f.Position = 0;
uniqueFilename = Guid.NewGuid() + Path.GetExtension(file.FileName);
data.file = uniqueFilename;
string absolutePath = @"ValuableFiles\" + uniqueFilename;
try
{
file.CopyTo(ms);
var encFile = Encryption.HybridEncrypt(ms, memId.PublicKey);
data.signature = Encryption.SignData(ms, memId.PrivateKey);
System.IO.File.WriteAllBytes(absolutePath, encFile.ToArray());
f.Close();
}
catch (Exception ex)
{
_logger.LogError(ex, "Error happend while saving file |" + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(View("Error", new ErrorViewModel()
{
Message = "Error while saving the file. Try again later"
}));
}
}
}
}
else
{
ModelState.AddModelError("file", "File is not valid or size is greater than 10Mb");
_logger.LogError("File is not valid or size is greater than 10Mb |" + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(View());
}
data.email = HttpContext.User.Identity.Name;
_submissionService.AddSubmission(data);
TempData["message"] = "Document submitted successfully";
_logger.LogInformation("File uploaded successfully | ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(View());
}
else
{
TempData["error"] = "Deadline date overdue";
_logger.LogError("Deadline date overdue |" + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(View());
}
}
else
{
ModelState.AddModelError("file", "Check your input. Operation failed");
return(View(data));
}
}
catch (Exception ex)
{
_logger.LogError(ex.Message + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
return(RedirectToAction("Error"));
}
}
public IActionResult Upload(IFormFile file, SubmissionViewModel data, string idEnc)
{
string idDec = Encryption.SymmetricDecrypt(idEnc);
Guid id = Guid.Parse(idDec);
SubmissionViewModel myModel = new SubmissionViewModel();
myModel.TaskId = idEnc;
data.Task = _taskService.GetTask(id);
data.Email = User.Identity.Name;
var member = _memService.GetMember(data.Email);
IPHostEntry ipEntry = Dns.GetHostEntry(Dns.GetHostName());
IPAddress[] addr = ipEntry.AddressList;
if (data.Task.Deadline > DateTime.Now)
{
if (ModelState.IsValid)
{
if (file != null)
{
string uniqueFilename;
if (System.IO.Path.GetExtension(file.FileName) == ".pdf" && file.Length < 1048576)
{
//137 80 78 71 13 10 26 10
byte[] whiteList = new byte[] { 37, 80, 68, 70 };
if (file != null)
{
MemoryStream userFile = new MemoryStream();
using (var f = file.OpenReadStream())
{
byte[] buffer = new byte[4];
f.Read(buffer, 0, 4);
for (int i = 0; i < whiteList.Length; i++)
{
if (whiteList[i] == buffer[i])
{
}
else
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nFile is not valid and accapteable");
ModelState.AddModelError("file", "file is not valid and accapteable");
return(View());
}
}
f.Position = 0;
//uploading the file
uniqueFilename = Guid.NewGuid() + Path.GetExtension(file.FileName);
data.File = uniqueFilename;
string absolutePath = @"ValuableFiles\" + uniqueFilename;
try
{
file.CopyTo(userFile);
var encryptedFileMemoryStream = Encryption.HybridEncrypt(userFile, member.PublicKey);
System.IO.File.WriteAllBytes(absolutePath, encryptedFileMemoryStream.ToArray());
data.Signature = Encryption.SignData(encryptedFileMemoryStream, member.PrivateKey);
f.Close();
}
catch (Exception e)
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nError happend while saving file.");
return(View("Error", new ErrorViewModel()
{
Message = "Error while saving the file. Try again later"
}));
}
}
}
_subService.AddSubmission(data);
_logger.LogInformation("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nAssignment submitted successfully.");
TempData["message"] = "Assignment submitted successfully";
return(View(myModel));
}
else
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nFile is not valid and acceptable or size is greater than 10Mb");
ModelState.AddModelError("", "File is not valid and acceptable or size is greater than 10Mb");
return(View(myModel));
}
}
else
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nNo file was selected");
ModelState.AddModelError("", "No file was selected");
return(View(myModel));
}
}
else
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nOperation failed due to input error.");
ModelState.AddModelError("", "Check your input. Operation failed");
return(View(myModel));
}
}
else
{
_logger.LogError("IP: " + addr[1].ToString() + "\nTime: " + DateTime.Now + "\nUser: "******"\nDeadline expired");
ModelState.AddModelError("", "Sorry, deadline has been expired.");
return(View(myModel));
}
}
