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cc804dd311
4 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
| cc804dd311 |
Run enforcement from exact alarms, and re-arm it before first unlock
The decision layer needed a runtime. A polling loop was the obvious design and the wrong one: Doze can skip a poll indefinitely, and skipping the 05:00 boundary leaves the curfew allowlist applied into the morning -- the user finds their banking app missing with no obvious cause. The transitions are known ahead of time, so they get exact alarms. The service wakes, applies, schedules the next run and stops rather than sitting resident. BootReceiver takes LOCKED_BOOT_COMPLETED as well as BOOT_COMPLETED, because the latter does not arrive until first unlock. That is not theoretical: this phone sat at RUNNING_LOCKED for minutes after an earlier reboot in this session, with no network and no app able to start. Relying on BOOT_COMPLETED alone freezes enforcement state across a reboot -- safe for hiding, not for unhiding, which is the direction that strands you without a dialer. The schedule is re-armed before unlock; the pass itself waits until storage is readable. The first on-device run logged "exact alarms not permitted", and dumpsys showed what that costs: window=+11m14s, maxWhenElapsed=+25m51s, so a 15-minute fallback could slip to 26 minutes. SCHEDULE_EXACT_ALARM is user-revocable and denied by default on Android 16; USE_EXACT_ALARM is the permission for apps whose function is acting at specific times, and is granted at install. After the change: window=0, exactAllowReason=policy_permission, whenElapsed equal to maxWhenElapsed. The service reports "not DO/PO - no enforcement applied" and does nothing when unprovisioned, rather than failing quietly, and a failure inside a pass cannot stop the next run being scheduled -- an enforcement bug should degrade one tick, not end the chain. Not yet wired: the service logs a tick rather than calling setApplicationHidden with the decision. Both halves are tested; joining them is next. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AwepyL5Lxs5QKbKkMpxxxL |
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| d0fcda3a47 |
Provision home coordinates out of git; layer the workout signal; drop the test hook
The geofence needs HOME_LAT/HOME_LON, but those say where I live, so the committed policy asset is generated with --redact-home and the real values are pushed to app-private storage instead. push_home_location.sh greps config_secrets.sh rather than sourcing it -- that file holds other secrets and this script has no business evaluating them -- and refuses the shipped REDACTED_* placeholder with a message naming the file to fill in, rather than writing whatever the parse happened to land on. Private storage was chosen for its lifetime as much as its permissions: it does not survive an uninstall, so reinstalling forces re-provisioning instead of silently inheriting a stale home. The default umask left the file 666, so the script chmods it 600; the shell user gets Permission denied, and the /data/local/tmp staging copy is removed after the transfer. Every read failure returns null rather than throwing. Null reaches the enforcement layer as location-unknown, which already fails closed into enforcing -- so a corrupt coordinates file cannot become an unlock, and cannot crash the service either. Workout detection replaces a root-only SQLite read of StrongLifts' private database. The manual source is time-boxed rather than a plain toggle, because a workout mode left on by accident is indistinguishable from having no exception at all. The guarded wrapper catches broadly and times out: nothing about a workout probe failing should be able to stop enforcement running. The combined source can name which signal opened the exception, so the UI can explain an unlock rather than presenting it as magic. Only the two sources verified to exist on this device will be wired -- com.kuhy.workout_app exposes nothing readable and org.runnerup is not installed. HideTestReceiver is deleted. It proved setApplicationHidden persistence, which is what it was for, but it applied policy from an exported receiver and that has no place in a build that will later hold device owner. Confirmed absent from the rebuilt and reinstalled APK. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AwepyL5Lxs5QKbKkMpxxxL |
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| 1b7958143d |
Prove DPM app-hiding survives a reboot; build the enforcement decision layer
The whole Device Owner design assumed setApplicationHidden persists across a reboot, and that had never been tested -- while both shell primitives were measured to be cleared by one. Settling it looked like it needed a factory reset. It does not: a managed profile is removable and takes its profile-owner grant with it, so the DPM API can be exercised and then erased. pm create-user --profileOf 0 --managed -> user 10 dpm set-profile-owner --user 10 ... ... hide, reboot, re-check ... pm remove-user 10 hidden=true before the reboot, hidden=true after, agreed by dumpsys and by the DPM API itself. Afterwards: Device Owner Type -1, no restrictions, and Chrome in user 0 untouched. Scope limit, stated because it is easy to overclaim: this proves the API's hidden state persists under PROFILE OWNER inside a work profile. It does not prove a DEVICE OWNER can hide a given app in user 0, which is what the design actually needs -- DO there additionally cannot touch the launcher, the default dialer/SMS/IME or packages the system deems critical, and the call can return false silently. That must be tested in the first minute after provisioning, while clearDeviceOwnerApp() is still a cheap exit. On top of that, EnforcementDecision turns policy plus conditions into a hide/show set. It is a pure function, so the whole decision layer is tested without a device, a clock or a location provider. packagesToShow is deliberately the complete allowed set rather than a delta. Failing to hide something is a mild disappointment; failing to UNHIDE strands the user without a dialer or a bank at 09:00 because the phone rebooted during curfew. Applying the full set on every evaluation makes a missed run self-repairing, which matters because BOOT_COMPLETED does not fire until first unlock -- observed directly, the phone sat at RUNNING_LOCKED for minutes after a reboot with no network at all. The workout exception is expressed as packages rather than domains. The rooted system unblocked youtube.com in a hosts file; hiding an app cannot target a domain, so the package set is derived from the configured domains and config.sh stays the source of truth for intent. Signal sources were checked on the device before being built: StrongLifts is granted health.WRITE_EXERCISE and Health Connect is installed, so that path is viable; com.kuhy.workout_app exposes only a MainActivity and Flutter boilerplate; org.runnerup is not installed here at all. Only the two that can actually produce a signal will be wired. HideTestReceiver is temporary and must be deleted before any provisioned build. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AwepyL5Lxs5QKbKkMpxxxL |
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| f636d2b21b |
Make focus policy and blocklist usable without root; fix workout CDN unblock
phone_focus_mode is built for a rooted phone: the hosts layer is a read-only
bind mount over /system/etc/hosts, chosen so that even root-in-a-terminal
cannot overwrite it. None of that ports to a stock locked device. This splits
out the parts that are device-independent so one policy can drive both.
python_pkg/focus_policy parses config.sh rather than copying it, so the shell
config stays the source of truth and the two cannot drift. It rejects the
shipped REDACTED_* coordinate placeholder instead of defaulting to (0,0),
which would move "home" to the Atlantic and quietly disable the location gate.
blocklist.py converts the hosts file to domains for a DoT resolver or a local
VpnService. Three properties of the real 194k-line file make the obvious parser
wrong, and all three are handled: generate_hosts_file.sh *comments out*
deliberate unblocks rather than deleting them, so stripping '#' re-blocks
facebook/messenger/linkedin/4chan; the StevenBlack header carries loopback and
IPv6 housekeeping that would blackhole localhost; and ~1060 upstream annotation
tokens ('#[adware.zeno]', '"spam') render as address=/"spam/, which makes
dnsmasq refuse to start -- taking DNS down rather than blocking anything.
Verified with dnsmasq --test over all 185681 generated domains.
strip_workout_hosts.py had the same class of bug on the live rooted phone:
exact set membership meant the allowlisted googlevideo.com never matched the
dynamic r*---sn-*.googlevideo.com hosts YouTube actually streams from, so the
workout unblock was only partly working. Now suffix-matched (17 lines stripped,
was 14). The three new tests were checked against the original code in a
throwaway worktree; two of them fail there, so they pin the fix rather than
passing vacuously.
focus_owner is a device-owner app that deliberately does nothing yet. It ships
clearDeviceOwnerApp() implemented and tested first, because dpm
remove-active-admin does not work on a device owner: an app that locks the
device down before proving it can let go leaves a soft-brick recoverable only
through fastboot on a locked bootloader. Built, installed and launched on the
Pixel 6a; dumpsys afterwards confirms Device Owner Type -1 and no user
restrictions, i.e. the phone is unchanged.
Measured while scoping this, and not yet reflected in any enforcement code:
on Android 16 both pm suspend and pm disable-user are cleared by a reboot, so
shell-level app blocking is per-session only. setApplicationHidden is assumed
to persist under Device Owner but is untested.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AwepyL5Lxs5QKbKkMpxxxL
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