136 lines
4.3 KiB
QML
136 lines
4.3 KiB
QML
// One owner for the temporary FPC1020 interaction path.
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//
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// The privileged reader daemon publishes only an IRQ pulse. Until the
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// match-on-chip daemon exists, a user-visible hold is the configured temporary
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// confirmation. The Polkit surface may submit the configured temporary PAM
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// factor after a completed hold; it is never a lock-screen unlock path.
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pragma Singleton
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import QtQuick
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import Quickshell.Io
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import qs.modules.common
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QtObject {
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id: root
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readonly property bool previewEnabled:
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Config.options?.lock?.fingerprintPreview?.enabled ?? false
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readonly property bool polkitEnabled:
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Config.options?.lock?.fingerprintPolkit?.enabled ?? true
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readonly property bool enabled: previewEnabled || polkitEnabled
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readonly property int holdMs:
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Config.options?.lock?.fingerprintPreview?.holdMs ?? 3000
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property bool holding: false
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property bool confirmed: false
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property bool pulseSeen: false
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property real holdProgress: 0
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property double holdStartedAt: 0
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property string activePurpose: ""
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property string confirmedPurpose: ""
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property string pulseToken: ""
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signal pulseObserved()
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signal holdConfirmed(string purpose)
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function beginHold(purpose) {
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if (!root.enabled || !purpose) return false;
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root.confirmed = false;
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root.confirmedPurpose = "";
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root.activePurpose = purpose;
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root.holding = true;
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root.holdStartedAt = Date.now();
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root.holdProgress = 0;
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holdTimer.start();
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return true;
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}
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function cancelHold(purpose = "") {
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if (purpose && root.activePurpose !== purpose) return;
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root.holding = false;
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root.holdProgress = 0;
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root.activePurpose = "";
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holdTimer.stop();
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}
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function confirmHold(purpose = "") {
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if (!root.holding || (purpose && root.activePurpose !== purpose)) return;
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const confirmedPurpose = root.activePurpose;
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root.holding = false;
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root.holdProgress = 1;
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root.activePurpose = "";
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holdTimer.stop();
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root.confirmed = true;
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root.confirmedPurpose = confirmedPurpose;
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root.holdConfirmed(confirmedPurpose);
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confirmTimer.restart();
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}
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// The diagnostic IPC and the reader file meet here. Neither can unlock a
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// session; Polkit alone may use the explicit temporary confirmation path.
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function notePulse() {
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if (!root.enabled)
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return { ok: false, code: "not_enabled", reason: "fingerprint preview is disabled" };
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root.pulseSeen = true;
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root.pulseObserved();
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pulseTimer.restart();
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return { ok: true, status: "observed" };
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}
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function reset(purpose = "") {
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if (purpose && root.activePurpose !== purpose && root.confirmedPurpose !== purpose)
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return;
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root.cancelHold();
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root.confirmed = false;
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root.confirmedPurpose = "";
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root.pulseSeen = false;
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confirmTimer.stop();
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pulseTimer.stop();
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}
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FileView {
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id: pulseFile
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path: "/run/blueline-fingerprintd/preview-pulse"
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watchChanges: true
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printErrors: false
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onFileChanged: reload()
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onLoaded: {
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try {
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const record = JSON.parse(pulseFile.text());
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const token = `${record.sequence}:${record.at_ms}`;
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if (token === root.pulseToken) return;
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root.pulseToken = token;
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const ageMs = Date.now() - Number(record.at_ms);
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if (Number(record.sequence) > 0 && ageMs >= 0 && ageMs < 5000)
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root.notePulse();
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} catch (error) {
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console.warn("[fingerprint-preview] invalid FPC pulse record:", error);
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}
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}
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}
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Timer {
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id: holdTimer
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interval: 50
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repeat: true
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onTriggered: {
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const elapsed = Date.now() - root.holdStartedAt;
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root.holdProgress = Math.min(1, elapsed / Math.max(1, root.holdMs));
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if (root.holdProgress >= 1) root.confirmHold();
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}
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}
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Timer {
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id: confirmTimer
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interval: 3500
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onTriggered: {
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root.confirmed = false;
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root.confirmedPurpose = "";
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}
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}
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Timer {
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id: pulseTimer
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interval: 3500
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onTriggered: root.pulseSeen = false
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}
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}
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