Files
landing-api/docker/Caddyfile
Josep Piguillem 7e672a5e62 Serve uploaded SVGs under their CSP, and identify the image fetcher
The Content-Security-Policy meant for stored SVGs never applied: in
Caddy a `*` in the middle of a path does not cross a `/`, so
`path /storage/*.svg` only matched files directly under /storage, and
every upload lives in a directory below it. Two matchers, which Caddy
ANDs, cover any depth.

RemoteImage fetched with Guzzle's anonymous default User-Agent, which
Wikimedia answers with 403. It now sends `<app>/1.0 (+<app url>; media
fetcher)`, the identification such hosts ask of automated clients.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 20:43:59 +02:00

69 lines
2.0 KiB
Caddyfile

{
# The panel is the only thing served, and it is behind a login: no reason
# for the server to announce its version to anybody scanning.
frankenphp
order php_server before file_server
auto_https off
servers {
trusted_proxies static private_ranges
}
}
{$SERVER_NAME:-:80} {
root * /app/public
encode zstd gzip
# Uploaded images. `public/storage` is a symlink into the storage volume,
# so this is what actually serves what the collective uploads — and it is
# the one path an SSR frontend fetches on every page view, so it is cached
# hard and never touched by PHP.
@media path /storage/*
header @media Cache-Control "public, max-age=31536000, immutable"
# Uploaded SVGs are sanitized on the way in (MediaController). This is the
# second line: opened directly rather than through an <img>, an SVG is a
# document, and nothing stored here has any business running script or
# loading anything from elsewhere.
#
# Two matchers, which Caddy ANDs, rather than `path /storage/*.svg`: a `*`
# in the middle of a path does not cross a `/`, so that pattern only ever
# matched files directly under /storage — and every upload is a directory
# below it.
@svg {
path /storage/*
path_regexp (?i)\.svg$
}
header @svg Content-Security-Policy "default-src 'none'; style-src 'unsafe-inline'; img-src data:"
# The frontend is a separate application on another origin.
@api path /api/*
header @api {
X-Content-Type-Options nosniff
}
header {
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
Referrer-Policy strict-origin-when-cross-origin
-Server
}
php_server {
# Laravel's own health route, so the container can be probed without
# touching the database.
try_files {path} /index.php
}
# The health probe runs every 30 seconds and would otherwise be most of
# the access log. `log_skip` is the directive for this — `exclude` inside
# `log` is not valid in Caddy 2.
@health path /up
log_skip @health
log {
output stdout
format json
}
}