Replaces the disabled "logo upload not bundled in OSS" placeholder
with a real upload flow. Logos attach to the Account via ActiveStorage
(`has_one_attached :logo`) and replace the default WaboSign mark at
every render site that previously rendered `shared/_logo`.
Accepted formats: PNG, JPEG, and SVG. SVGs go through
`AccountLogo.sanitize_upload` before storage:
- `<script>` and `<foreignObject>` elements removed
- every `on*` attribute stripped (onclick, onload, onerror, …)
- `href` / `xlink:href` dropped unless the value starts with `#`
(in-doc fragment) or `data:` (inert in <img> context)
Raster uploads pass through unchanged. 2 MB upload cap on all formats.
Dispatch is a new `shared/_account_logo.html.erb` partial — takes an
optional `account:` local and emits either `<img>` (logo attached) or
falls back to the existing inline `shared/_logo.html.erb` SVG. All
swapped render sites pass the right account expression:
- shared/_title.html.erb → current_account
- start_form/_brand_logo.html.erb → @template.account
- submit_form/_brand_logo.html.erb → @submitter.submission.account
- templates_uploads/show.html.erb → current_account
- submissions/_logo.html.erb → @submission || @submitter accounts
- templates_share_link_qr/_logo.html.erb → @template.account
The landing page stays on the default mark (no account context).
Static favicon/PWA manifest/preview.png stay on the default brand.
Audit-trail PDF (`lib/submissions/generate_audit_trail.rb#add_logo`)
now calls `PdfIcons.account_logo_io(submission.account)`. SVG logos
are rasterized to PNG via ActiveStorage variants (libvips + librsvg,
both present in the production image via the `vips` Alpine pkg). On
any failure path the helper logs and falls back to `PdfIcons.logo_io`
so audit-trail generation never crashes on a bad logo.
Routes: `resource :account_logo, only: %i[create destroy]` nested
under `/settings`. AccountLogoController authorizes via
`authorize!(:manage, current_account)` and routes the form back to
`/settings/personalization` on success or failure.
Specs (11/11 pass in the Ruby 4.0.1 + Postgres-14 container):
- spec/lib/account_logo_spec.rb — 6 sanitizer unit cases
- spec/requests/account_logo_controller_spec.rb — 5 request cases
Smoke-tested end-to-end in the built image:
- PNG round-trips through attach/download.
- Malicious SVG (`<script>` + onload + alert) saves with all three
payloads scrubbed from the stored bytes.
- SVG → PNG rasterization for the PDF path produces a 18 KB PNG
with valid PNG magic — confirms libvips/librsvg is actually
wired in the production Alpine image.
- After purge, `PdfIcons.account_logo_io` is byte-identical to
`PdfIcons.logo_io` (clean fallback).
- /settings/personalization renders the new form with all expected
fields.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Wabo
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