content-type

public class PayloadLimitFilter extends OncePerRequestFilter {

    private final long maxBytes;
    private final Set<String> allowedTypes;

    public PayloadLimitFilter(long maxBytes, Set<String> allowedTypes) {

Enforce Request Payload Size and Content-Type with a Servlet Filter and Controller Guard

spring-boot servlet-filter validation

by codesnips 4 tabs

ruby

class AttachmentContentTypeValidator < ActiveModel::EachValidator
  SIGNATURES = {
    "image/png"       => ["\x89PNG\r\n\x1a\n".b],
    "image/jpeg"      => ["\xFF\xD8\xFF".b],
    "image/gif"       => ["GIF87a".b, "GIF89a".b],
    "application/pdf" => ["%PDF-".b]

Safer File Attachments: Content Type + Size Validation

rails security active-storage

by codesnips 4 tabs