private static async Task AddValueProviderAsync(ValueProviderFactoryContext context)
{
var request = context.ActionContext.HttpContext.Request;
IFormCollection form;
try
{
form = await request.ReadFormAsync();
}
catch (InvalidDataException ex)
{
// ReadFormAsync can throw InvalidDataException if the form content is malformed.
// Wrap it in a ValueProviderException that the CompositeValueProvider special cases.
throw new ValueProviderException(Resources.FormatFailedToReadRequestForm(ex.Message), ex);
}
catch (IOException ex)
{
// ReadFormAsync can throw IOException if the client disconnects.
// Wrap it in a ValueProviderException that the CompositeValueProvider special cases.
throw new ValueProviderException(Resources.FormatFailedToReadRequestForm(ex.Message), ex);
}
var valueProvider = new FormValueProvider(
BindingSource.Form,
form,
CultureInfo.CurrentCulture);
context.ValueProviders.Add(valueProvider);
}
private static async Task AddValueProviderAsync(ValueProviderFactoryContext context)
{
var request = context.ActionContext.HttpContext.Request;
var valueProvider = new FormValueProvider(
BindingSource.Form,
await request.ReadFormAsync(),
CultureInfo.CurrentCulture);
context.ValueProviders.Add(valueProvider);
}
private static async Task AddValueProviderAsync(ValueProviderFactoryContext context)
{
var request = context.ActionContext.HttpContext.Request;
var valueProvider = new FormValueProvider(
BindingSource.Form,
await request.ReadFormAsync(),
CultureInfo.CurrentCulture);
context.ValueProviders.Add(valueProvider);
}
protected override IEnumerableValueProvider GetEnumerableValueProvider(
BindingSource bindingSource,
Dictionary <string, StringValues> values,
CultureInfo culture)
{
var emptyValueProvider = new QueryStringValueProvider(bindingSource, new QueryCollection(), culture);
var valueProvider = new FormValueProvider(bindingSource, new FormCollection(values), culture);
return(new CompositeValueProvider()
{
emptyValueProvider, valueProvider
});
}
private static async Task AddValueProviderAsync(ValueProviderFactoryContext context)
{
var request = context.ActionContext.HttpContext.Request;
IFormCollection form;
try
{
form = await request.ReadFormAsync();
}
catch (InvalidDataException ex)
{
throw new ValueProviderException(Resources.FormatFailedToReadRequestForm(ex.Message), ex);
}
var valueProvider = new FormValueProvider(
BindingSource.Form,
form,
CultureInfo.CurrentCulture);
context.ValueProviders.Add(valueProvider);
}
public static async Task <Microsoft.AspNetCore.Mvc.ModelBinding.FormValueProvider> StreamFile(this HttpRequest request, Stream targetStream)
{
if (!MultipartRequestHelper.IsMultipartContentType(request.ContentType))
{
throw new Exception($"Expected a multipart request, but got {request.ContentType}");
}
// Used to accumulate all the form url encoded key value pairs in the
// request.
var formAccumulator = new KeyValueAccumulator();
string targetFilePath = null;
var boundary = MultipartRequestHelper.GetBoundary(
MediaTypeHeaderValue.Parse(request.ContentType),
_defaultFormOptions.MultipartBoundaryLengthLimit);
var reader = new MultipartReader(boundary, request.Body);
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
ContentDispositionHeaderValue contentDisposition;
var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out contentDisposition);
if (hasContentDispositionHeader)
{
if (MultipartRequestHelper.HasFileContentDisposition(contentDisposition))
{
await section.Body.CopyToAsync(targetStream);
}
else if (MultipartRequestHelper.HasFormDataContentDisposition(contentDisposition))
{
// Content-Disposition: form-data; name="key"
//
// value
// Do not limit the key name length here because the
// multipart headers length limit is already in effect.
var key = HeaderUtilities.RemoveQuotes(contentDisposition.Name);
var encoding = GetEncoding(section);
using (var streamReader = new StreamReader(
section.Body,
encoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
{
// The value length limit is enforced by MultipartBodyLengthLimit
var value = await streamReader.ReadToEndAsync();
if (String.Equals(value, "undefined", StringComparison.OrdinalIgnoreCase))
{
value = String.Empty;
}
formAccumulator.Append(key.Trim().Value, value);
if (formAccumulator.ValueCount > _defaultFormOptions.ValueCountLimit)
{
throw new InvalidDataException($"Form key count limit {_defaultFormOptions.ValueCountLimit} exceeded.");
}
}
}
}
// Drains any remaining section body that has not been consumed and
// reads the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
// Bind form data to a model
var formValueProvider = new Microsoft.AspNetCore.Mvc.ModelBinding.FormValueProvider(
BindingSource.Form,
new FormCollection(formAccumulator.GetResults()),
CultureInfo.CurrentCulture);
return(formValueProvider);
}
