public async Task <IActionResult> Create(StreamFileUploadDatabase model)
{
// Perform an initial check to catch FileUpload class
// attribute violations.
if (!ModelState.IsValid)
{
_uploadContent.Result = "Please correct the form.";
return(View());
}
var formFileContent =
await FileHelpers.ProcessFormFile <StreamFileUploadDatabase>(
model.FormFile, ModelState, _permittedExtentions,
_fileSizeLimit);
// Perform a second check to catch ProcessFormFile method
// violations. If any validation check fails, return to the
// page.
if (!ModelState.IsValid)
{
_uploadContent.Result = "Please correct the form.";
return(View());
}
// **WARNING!**
// In the following example, the file is saved without
// scanning the file's contents. In most production
// scenarios, an anti-virus/anti-malware scanner API
// is used on the file before making the file available
// for download or for use by other systems.
// For more information, see the topic that accompanies
// this sample.
var file = new ClamSectionAcademicSubCategoryItem
{
ItemPath = null,
ItemTitle = model.FormFile.FileName,
ItemDescription = model.Note,
Size = model.FormFile.Length,
SubCategoryId = new Guid("8d7af8fa-4659-4aef-1746-08d7d7789232")
//AcademicId = new Guid("a7e95d01-3a1c-474c-d5ab-08d7d76073f2")
};
_context.Set <ClamSectionAcademicSubCategoryItem>().Add(file);
//_context.Entry(file).State = EntityState.Modified;
_context.SaveChanges();
//await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
public async Task <IActionResult> UploadDatabase()
{
if (!MultipartRequestHelper.IsMultipartContentType(Request.ContentType))
{
ModelState.AddModelError("File",
$"The request couldn't be processed (Error 1).");
// Log error
return(BadRequest(ModelState));
}
// Accumulate the form data key-value pairs in the request (formAccumulator).
var formAccumulator = new KeyValueAccumulator();
var trustedFileNameForDisplay = string.Empty;
var untrustedFileNameForStorage = string.Empty;
var trustedFilePathStorage = string.Empty;
var trustedFileNameForFileStorage = string.Empty;
var streamedFileContent = new byte[0];
var streamedFilePhysicalContent = new byte[0];
var boundary = MultipartRequestHelper.GetBoundary(
MediaTypeHeaderValue.Parse(Request.ContentType),
_defaultFormOptions.MultipartBoundaryLengthLimit);
var reader = new MultipartReader(boundary, HttpContext.Request.Body);
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
var hasContentDispositionHeader =
ContentDispositionHeaderValue.TryParse(
section.ContentDisposition, out var contentDisposition);
if (hasContentDispositionHeader)
{
if (MultipartRequestHelper
.HasFileContentDisposition(contentDisposition))
{
untrustedFileNameForStorage = contentDisposition.FileName.Value;
// Don't trust the file name sent by the client. To display
// the file name, HTML-encode the value.
trustedFileNameForDisplay = WebUtility.HtmlEncode(
contentDisposition.FileName.Value);
if (!Directory.Exists(_targetFilePath))
{
string path = String.Format("{0}", _targetFilePath);
Directory.CreateDirectory(path);
}
//streamedFileContent =
// await FileHelpers.ProcessStreamedFile(section, contentDisposition,
// ModelState, _permittedExtentions, _fileSizeLimit);
streamedFilePhysicalContent = await FileHelpers.ProcessStreamedFile(
section, contentDisposition, ModelState,
_permittedExtentions, _fileSizeLimit);
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
}
else if (MultipartRequestHelper
.HasFormDataContentDisposition(contentDisposition))
{
// Don't limit the key name length because the
// multipart headers length limit is already in effect.
var key = HeaderUtilities
.RemoveQuotes(contentDisposition.Name).Value;
var encoding = GetEncoding(section);
if (encoding == null)
{
ModelState.AddModelError("File",
$"The request couldn't be processed (Error 2).");
// Log error
return(BadRequest(ModelState));
}
using (var streamReader = new StreamReader(
section.Body,
encoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
{
// The value length limit is enforced by
// MultipartBodyLengthLimit
var value = await streamReader.ReadToEndAsync();
if (string.Equals(value, "undefined",
StringComparison.OrdinalIgnoreCase))
{
value = string.Empty;
}
formAccumulator.Append(key, value);
if (formAccumulator.ValueCount >
_defaultFormOptions.ValueCountLimit)
{
// Form key count limit of
// _defaultFormOptions.ValueCountLimit
// is exceeded.
ModelState.AddModelError("File",
$"The request couldn't be processed (Error 3).");
// Log error
return(BadRequest(ModelState));
}
}
}
}
// Drain any remaining section body that hasn't been consumed and
// read the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
// Bind form data to the model
var formData = new FormData();
var formValueProvider = new FormValueProvider(
BindingSource.Form,
new FormCollection(formAccumulator.GetResults()),
CultureInfo.CurrentCulture);
var bindingSuccessful = await TryUpdateModelAsync(formData, prefix : "",
valueProvider : formValueProvider);
trustedFilePathStorage = String.Format("{0}\\{1}\\{2}\\{3}",
//_targetFilePath,
_targetFolderPath,
formData.AcademicId,
formData.SubCategoryId,
Path.GetRandomFileName());
if (!bindingSuccessful)
{
ModelState.AddModelError("File",
"The request couldn't be processed (Error 5).");
// Log error
return(BadRequest(ModelState));
}
// **WARNING!**
// In the following example, the file is saved without
// scanning the file's contents. In most production
// scenarios, an anti-virus/anti-malware scanner API
// is used on the file before making the file available
// for download or for use by other systems.
// For more information, see the topic that accompanies
// this sample app.
Directory.CreateDirectory(trustedFilePathStorage);
using (var targetStream = System.IO.File.Create(
Path.Combine(trustedFilePathStorage, trustedFileNameForDisplay)))
{
await targetStream.WriteAsync(streamedFilePhysicalContent);
_logger.LogInformation(
"Uploaded file '{TrustedFileNameForDisplay}' saved to " +
"'{TargetFilePath}' as {TrustedFileNameForFileStorage}",
trustedFileNameForDisplay, trustedFilePathStorage,
trustedFileNameForDisplay);
}
var file = new ClamSectionAcademicSubCategoryItem()
{
ItemPath = Path.Combine(trustedFilePathStorage, trustedFileNameForDisplay),
ItemTitle = untrustedFileNameForStorage,
//ItemDescription = formData.Note,
Size = streamedFilePhysicalContent.Length,
DateAdded = DateTime.Now,
SubCategoryId = formData.SubCategoryId,
AcademicId = formData.AcademicId
};
_context.Add(file);
await _context.SaveChangesAsync();
return(RedirectToAction("Episode", "Academia", new { id = formData.AcademicId, said = formData.SubCategoryId }));
}
