UploadStream VS FileSignatures

[Route("projects/{projectId:int}/files", Name = "UploadFile")] [Consumes("multipart/form-data")] [DisableFormValueModelBinding] [RequestSizeLimit(--num - bytes--)] [RequestFormLimits(MultipartBodyLengthLimit = --num - bytes--)] public async Task < IActionResult > PostAsync([FromRoute] int projectid) { // see nuget for https://github.com/ma1f/uploadstream var model = await this.StreamFiles < MyFileItem > (async file => { // never trust the client var fileName = file.FileName.GetSafeUniqueUri();

There seem to be a few in nuget, the issue is they only cover a very few filetypes, presumably because the authors didn't want to spend gazillions of hours typing all the data in. This one might be a good base if you wanted to fork or contribute to it: https://github.com/neilharvey/FileSignatures/

https://github.com/neilharvey/FileSignatures is such a package that you can use to detect the actual file type and you can extend it to detect custom signature.