Andreas Kling 18aee32084 RequestServer: Add --resource-map option for URL-to-file substitution ...

This adds support for intercepting network requests and serving local
file content instead. When a URL matches an entry in the substitution
map, the local file is served while preserving the original URL's
origin for cross-origin checks.

Usage:
    Ladybird --resource-map=/path/to/map.json

The JSON file format is:
    {
      "substitutions": [
        {
          "url": "https://example.com/script.js",
          "file": "/path/to/local/script.js",
          "content_type": "application/javascript",
          "status_code": 200
        }
      ]
    }

Fields:
  - url (required): Exact URL to intercept (query string and fragment
    are stripped before matching)
  - file (required): Absolute path to local file to serve
  - content_type (optional): Override Content-Type header (defaults to
    guessing from filename)
  - status_code (optional): HTTP status code (defaults to 200)

This is incredibly useful for debugging production websites: you can
intercept any script, stylesheet, or other resource and replace it with
a local copy containing your own debug instrumentation, console.log
statements, or experimental fixes - all without modifying the actual
site or setting up a local dev server.

2026-01-19 10:23:26 +01:00

11 KiB

Raw Blame History

View Raw