Linked Resources Integrity

Command line example

Link tag integrity to prove hash of the resource being loaded

1. modify file ./cmd/linkedResourceHash.sh

on line 55 set path to file in the ts dockerized service like this:

      --filePath="/var/www/cdn/www/media/images/favicon/Icon_Sandbox_Brightday.ico" \

2. invoke bash script in terminal

./cmd/linkedResourceHash.sh

3. Improve quality of the linked resources on Your sites

    <link
      rel="icon"
      type="image/x-icon"
      href="https://sandbox.brightday.email/cdn/www/media/images/favicon/Icon_Sandbox_Brightday.ico"
      href-fallback="favicon/Icon_Sandbox_Brightday.ico"
      integrity="sha512-t3XuLqNXUNFqkrdBlRf4me63watpaFBd8TZzcCAvxUMG4msGTx2/k6OFQdEl0wUj3iKDK9z2Z9h+YQF71i8S+Q=="
      onerror="javascript: ( () => { this.onerror = null; this.href = this.getAttribute( 'href-fallback' ); } )();"
    />

Interfaces

Hasher

export interface LinkedResourceHasherInterface {

  preloadedResourceIntegrityProduce (
    filePath: string,
    algo: string
  ): string;


  linkPreloaderProduce (
    href: string,
    path: string,
    rel: string,
    as: string,
    fetchpriority: string,
    prettified: boolean
  ): string;

}