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flathub: sandbox permissions (home access and secrets) via portals

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
38/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Active
Tech stack
dart, flutter
Domain
databases, desktop, security

Research direction

Start by reading the Flatpak manifest and the app’s file chooser and secret storage integrations; the issue does not name their paths. Check how database files are opened and how flutter_secure_storage finds existing entries in a sandbox. Done means replacing broad permissions with portal or app data access where possible, justifying any exception, verifying the local MCP server permissions, and adding a “Running as a Flatpak” note to the docs.

Written by the indexing model from the issue text.

Description

enhancement flathub security

Part of #1060. Reviewer: "Why unrestricted home access?" and "Why unrestricted secrets access?" Linter: finish-args-home-filesystem-access (error).

Rules: "Static permissions must be kept to an absolute minimum"; apps "should rely on XDG Portals"; when a suitable portal exists, "using the portal becomes mandatory instead of static permissions"; "overly permissive configurations will not be accepted."

Current finish-args

--filesystem=home and --talk-name=org.freedesktop.secrets (plus network, ipc, x11/wayland, dri).

Work

  • Files: SQLite databases, SQL scripts, export targets, theme and extension folders must come from the file chooser portal or the app's own data dirs. Drop --filesystem=home. Check .db/.sqlite file associations (opened files arrive through the portal)
  • SSH tunnels: private keys and known_hosts: let the user pick key files through the chooser, or document --filesystem=~/.ssh:ro as a narrowly justified exception to ask for
  • Secrets: use the Secret portal (libsecret speaks it from inside a sandbox) instead of talking to org.freedesktop.secrets directly; verify that flutter_secure_storage works and that existing entries are found
  • Local MCP server / bridge: confirm what needs network and ipc
  • Write a short justification for every remaining permission for the reviewer
  • Add a "Running as a Flatpak" note to docs listing what changed in behaviour
Dominant language
Dart
Stars
23
Forks
1
Avg merge
45m
Merged PRs (30d)
529

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