Adcbda e1280e8cc7 Add custom icon support for web links (#3325)
* feat: add custom web link icon support and context menu option

Introduce the ability to change and display custom icons for .weblink files. Added a "Change Icon" context menu item that invokes the changeWeblinkIcon helper, and updated the icon rendering logic to use getWeblinkIcon instead of the default link icon. This allows users to personalize web link appearance in the file manager.

* Fix security and robustness issues in web link custom icons

 # UIWindowSearch and require the icon data URL body to be pure base64 in
  #isValidWeblinkIcon. A shared/downloaded .weblink is untrusted input and
 # the previous prefix-only check let a crafted icon break out of the
 # <img src> attribute.
 # byte-signature MIME sniffing and capping stored icon size (was storing
 # full-resolution images as base64).
 # without picking a file.
 # weblinks no longer fetches every file's contents on each render.
 # path instead of the target weblink).
 # label, add the AGPL license header, and drop redundant stored icon
 # copies.

* Keep SVG weblink icons as vectors instead of rasterizing

Rasterizing a picked SVG to a 256px PNG threw away its scalability for no
real benefit: an SVG rendered in <img> runs in script-free static mode, and
the base64-body validation already prevents attribute injection. Store SVGs
as data:image/svg+xml;base64 (content-sniffed, size-capped), and keep
rasterizing raster formats and oversized SVGs to bound stored size.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Daniel Salazar <daniel.salazar@puter.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-07 13:41:37 -07:00

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