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punktfunk/clients/apple/Config/Punktfunk.entitlements
enricobuehler e2257a6158
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fix(apple): persist Keychain trust — sign macOS + data-protection keychain
The client identity prompted for Keychain access on every launch/rebuild. Root
cause: the macOS app target was ad-hoc signed (CODE_SIGN_IDENTITY = "-"), and
the identity lived in the file keychain whose "Always Allow" ACL is bound to the
app's exact code signature (cdhash for ad-hoc). Every rebuild changed the binary
-> changed the cdhash -> the ACL no longer matched -> re-prompt.

- Sign the macOS target with Apple Development (team already set) instead of
  ad-hoc, so the designated requirement is identity-based and stable across
  rebuilds.
- Move the identity to the data-protection keychain (kSecUseDataProtectionKeychain)
  gated by a team-scoped keychain-access-group entitlement — access is granted by
  the app's entitlement, not a per-binary ACL, so it's prompt-free and survives
  rebuilds. Add Config/Punktfunk.entitlements and wire CODE_SIGN_ENTITLEMENTS into
  all six app configs (macOS/iOS/tvOS).
- Unsigned / ad-hoc builds (e.g. `swift run`) lack the entitlement
  (errSecMissingEntitlement) — fall back to the legacy file keychain so they still
  work (with the old prompt), no hard failure.

macOS re-mints the identity on first run (the old file-keychain copy isn't in the
data-protection keychain) -> one re-pair, which is acceptable. iOS keeps its
identity (the explicit access group equals the prior default).

Validated: swift build; swift test (39 passed, 0 failures); xcodebuild
-showBuildSettings confirms Apple Development + Config/Punktfunk.entitlements.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-12 23:25:51 +02:00

16 lines
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XML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<!-- Keychain Sharing: a team-scoped access group so the punktfunk/1 client identity in
the data-protection keychain is gated by the app's entitlement (team + bundle id),
not a per-binary ACL. That is what makes Keychain access persist across rebuilds
with NO prompt — see ClientIdentityStore. $(AppIdentifierPrefix) expands to the
team prefix at signing time. -->
<key>keychain-access-groups</key>
<array>
<string>$(AppIdentifierPrefix)io.unom.punktfunk</string>
</array>
</dict>
</plist>