2 * Copyright (C) 2013-2016 Canonical, Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 import AccountsService 0.1
22 import Ubuntu.Components 1.3
23 import Ubuntu.SystemImage 0.1
24 import Unity.Launcher 0.1
25 import Unity.Session 0.1
28 import "../Components"
32 created: loader.status == Loader.Ready
34 property real dragHandleLeftMargin: 0
36 property url background
37 property bool hasCustomBackground
39 // How far to offset the top greeter layer during a launcher left-drag
40 property real launcherOffset
42 readonly property bool active: required || hasLockedApp
43 readonly property bool fullyShown: loader.item ? loader.item.fullyShown : false
45 property bool allowFingerprint: true
47 // True when the greeter is waiting for PAM or other setup process
48 readonly property alias waiting: d.waiting
50 property string lockedApp: ""
51 readonly property bool hasLockedApp: lockedApp !== ""
53 property bool forcedUnlock
54 readonly property bool locked: LightDMService.greeter.active && !LightDMService.greeter.authenticated && !forcedUnlock
56 property bool tabletMode
57 property url viewSource // only used for testing
59 property int maxFailedLogins: -1 // disabled by default for now, will enable via settings in future
60 property int failedLoginsDelayAttempts: 7 // number of failed logins
61 property real failedLoginsDelayMinutes: 5 // minutes of forced waiting
62 property int failedFingerprintLoginsDisableAttempts: 3 // number of failed fingerprint logins
64 readonly property bool animating: loader.item ? loader.item.animating : false
67 signal sessionStarted()
68 signal emergencyCall()
70 function forceShow() {
72 d.isLockscreen = true;
77 loader.item.reset(true /* forceShow */);
79 // Normally loader.onLoaded will select a user, but if we're
80 // already shown, do it manually.
81 d.selectUser(d.currentIndex, false);
84 // Even though we may already be shown, we want to call show() for its
85 // possible side effects, like hiding indicators and such.
87 // We re-check forcedUnlock here, because selectUser above might
88 // process events during authentication, and a request to unlock could
89 // have come in in the meantime.
95 function notifyAppFocusRequested(appId) {
101 if (appId === lockedApp) {
102 hide(); // show locked app
105 d.startUnlock(false /* toTheRight */);
107 } else if (appId !== "unity8-dash") { // dash isn't started by user
108 d.startUnlock(false /* toTheRight */);
112 // Notify that the user has explicitly requested an app
113 function notifyUserRequestedApp() {
118 // A hint that we're about to focus an app. This way we can look
119 // a little more responsive, rather than waiting for the above
120 // notifyAppFocusRequested call. We also need this in case we have a locked
121 // app, in order to show lockscreen instead of new app.
122 d.startUnlock(false /* toTheRight */);
125 // This is a just a glorified notifyUserRequestedApp(), but it does one
126 // other thing: it hides any cover pages to the RIGHT, because the user
127 // just came from a launcher drag starting on the left.
128 // It also returns a boolean value, indicating whether there was a visual
129 // change or not (the shell only wants to hide the launcher if there was
131 function notifyShowingDashFromDrag() {
136 return d.startUnlock(true /* toTheRight */);
139 function sessionToStart() {
140 for (var i = 0; i < LightDMService.sessions.count; i++) {
141 var session = LightDMService.sessions.data(i,
142 LightDMService.sessionRoles.KeyRole);
143 if (loader.item.sessionToStart === session) {
148 return LightDMService.greeter.defaultSession;
154 readonly property bool multiUser: LightDMService.users.count > 1
155 readonly property int selectUserIndex: d.getUserIndex(LightDMService.greeter.selectUser)
156 property int currentIndex: Math.max(selectUserIndex, 0)
157 property bool waiting
158 property bool isLockscreen // true when we are locking an active session, rather than first user login
159 readonly property bool secureFingerprint: isLockscreen &&
160 AccountsService.failedFingerprintLogins <
161 root.failedFingerprintLoginsDisableAttempts
162 readonly property bool alphanumeric: AccountsService.passwordDisplayHint === AccountsService.Keyboard
164 // We want 'launcherOffset' to animate down to zero. But not to animate
165 // while being dragged. So ideally we change this only when the user
166 // lets go and launcherOffset drops to zero. But we need to wait for
167 // the behavior to be enabled first. So we cache the last known good
168 // launcherOffset value to cover us during that brief gap between
169 // release and the behavior turning on.
170 property real lastKnownPositiveOffset // set in a launcherOffsetChanged below
171 property real launcherOffsetProxy: (shown && !launcherOffsetProxyBehavior.enabled) ? lastKnownPositiveOffset : 0
172 Behavior on launcherOffsetProxy {
173 id: launcherOffsetProxyBehavior
174 enabled: launcherOffset === 0
175 UbuntuNumberAnimation {}
178 function getUserIndex(username) {
182 // Find index for requested user, if it exists
183 for (var i = 0; i < LightDMService.users.count; i++) {
184 if (username === LightDMService.users.data(i, LightDMService.userRoles.NameRole)) {
192 function selectUser(index, reset) {
193 if (index < 0 || index >= LightDMService.users.count)
197 loader.item.reset(false /* forceShow */);
199 currentIndex = index;
200 var user = LightDMService.users.data(index, LightDMService.userRoles.NameRole);
201 AccountsService.user = user;
202 LauncherModel.setUser(user);
203 LightDMService.greeter.authenticate(user); // always resets auth state
206 function hideView() {
208 loader.item.enabled = false; // drop OSK and prevent interaction
209 loader.item.notifyAuthenticationSucceeded(false /* showFakePassword */);
216 if (LightDMService.greeter.startSessionSync(root.sessionToStart())) {
219 } else if (loader.item) {
220 loader.item.notifyAuthenticationFailed();
225 function startUnlock(toTheRight) {
227 return loader.item.tryToUnlock(toTheRight);
233 function checkForcedUnlock(hideNow) {
234 if (forcedUnlock && shown) {
237 root.hideNow(); // skip hide animation
242 function showPromptMessage(text, isError) {
243 // inefficient, but we only rarely deal with messages
244 var html = text.replace(/&/g, "&")
245 .replace(/</g, "<")
246 .replace(/>/g, ">")
247 .replace(/\n/g, "<br>");
249 html = "<font color=\"#df382c\">" + html + "</font>";
253 loader.item.showMessage(html);
257 function showFingerprintMessage(msg) {
259 loader.item.reset(false /* forceShow */);
260 loader.item.showErrorMessage(msg);
262 showPromptMessage(msg, true);
266 onLauncherOffsetChanged: {
267 if (launcherOffset > 0) {
268 d.lastKnownPositiveOffset = launcherOffset;
272 onForcedUnlockChanged: d.checkForcedUnlock(false /* hideNow */)
273 Component.onCompleted: d.checkForcedUnlock(true /* hideNow */)
277 AccountsService.failedLogins = 0;
278 AccountsService.failedFingerprintLogins = 0;
280 // Stop delay timer if they logged in with fingerprint
281 forcedDelayTimer.stop();
282 forcedDelayTimer.delayMinutes = 0;
295 schema.id: "com.canonical.Unity8.Greeter"
301 // We use a short interval and check against the system wall clock
302 // because we have to consider the case that the system is suspended
303 // for a few minutes. When we wake up, we want to quickly be correct.
306 property var delayTarget
307 property int delayMinutes
309 function forceDelay() {
310 // Store the beginning time for a lockout in GSettings, so that
311 // we still lock the user out if they reboot. And we store
312 // starting time rather than end-time or how-long because:
313 // - If storing end-time and on boot we have a problem with NTP,
314 // we might get locked out for a lot longer than we thought.
315 // - If storing how-long, and user turns their phone off for an
316 // hour rather than wait, they wouldn't expect to still be locked
318 // - A malicious actor could manipulate either of the above
319 // settings to keep the user out longer. But by storing
320 // start-time, we never make the user wait longer than the full
322 greeterSettings.lockedOutTime = new Date().getTime();
323 checkForForcedDelay();
327 var diff = delayTarget - new Date();
329 delayMinutes = Math.ceil(diff / 60000);
336 function checkForForcedDelay() {
337 if (greeterSettings.lockedOutTime === 0) {
341 var now = new Date();
342 delayTarget = new Date(greeterSettings.lockedOutTime + failedLoginsDelayMinutes * 60000);
344 // If tooEarly is true, something went very wrong. Bug or NTP
345 // misconfiguration maybe?
346 var tooEarly = now.getTime() < greeterSettings.lockedOutTime;
347 var tooLate = now >= delayTarget;
349 // Compare stored time to system time. If a malicious actor is
350 // able to manipulate time to avoid our lockout, they already have
351 // enough access to cause damage. So we choose to trust this check.
352 if (tooEarly || tooLate) {
360 Component.onCompleted: checkForForcedDelay()
364 // Nothing should leak to items behind the greeter
365 MouseArea { anchors.fill: parent; hoverEnabled: true }
373 active: root.required
374 source: root.viewSource.toString() ? root.viewSource :
375 (d.multiUser || root.tabletMode) ? "WideView.qml" : "NarrowView.qml"
379 item.forceActiveFocus();
380 d.selectUser(d.currentIndex, true);
381 LightDMService.infographic.readyForDataChange();
387 d.selectUser(index, true);
391 LightDMService.greeter.respond(response);
396 onTease: root.tease()
397 onEmergencyCall: root.emergencyCall()
399 if (!loader.item.required) {
407 property: "backgroundTopMargin"
413 property: "launcherOffset"
414 value: d.launcherOffsetProxy
419 property: "dragHandleLeftMargin"
420 value: root.dragHandleLeftMargin
425 property: "delayMinutes"
426 value: forcedDelayTimer.delayMinutes
431 property: "background"
432 value: root.background
437 property: "hasCustomBackground"
438 value: root.hasCustomBackground
455 property: "alphanumeric"
456 value: d.alphanumeric
461 property: "currentIndex"
462 value: d.currentIndex
467 property: "userModel"
468 value: LightDMService.users
473 property: "infographicModel"
474 value: LightDMService.infographic
479 target: LightDMService.greeter
481 onShowGreeter: root.forceShow()
482 onHideGreeter: root.forcedUnlock = true
484 onShowMessage: d.showPromptMessage(text, isError)
488 loader.item.showPrompt(text, isSecret, isDefaultPrompt);
494 onAuthenticationComplete: {
497 if (LightDMService.greeter.authenticated) {
498 if (!LightDMService.greeter.promptless) {
502 if (!LightDMService.greeter.promptless) {
503 AccountsService.failedLogins++;
506 // Check if we should initiate a factory reset
507 if (maxFailedLogins >= 2) { // require at least a warning
508 if (AccountsService.failedLogins === maxFailedLogins - 1) {
509 loader.item.showLastChance();
510 } else if (AccountsService.failedLogins >= maxFailedLogins) {
511 SystemImage.factoryReset(); // Ouch!
515 // Check if we should initiate a forced login delay
516 if (failedLoginsDelayAttempts > 0
517 && AccountsService.failedLogins > 0
518 && AccountsService.failedLogins % failedLoginsDelayAttempts == 0) {
519 forcedDelayTimer.forceDelay();
522 loader.item.notifyAuthenticationFailed();
523 if (!LightDMService.greeter.promptless) {
524 d.selectUser(d.currentIndex, false);
529 onRequestAuthenticationUser: d.selectUser(d.getUserIndex(user), true)
533 target: DBusUnitySessionService
534 onLockRequested: root.forceShow()
536 root.forcedUnlock = true;
542 target: LightDMService.greeter
548 target: LightDMService.infographic
550 value: AccountsService.statsWelcomeScreen ? LightDMService.users.data(d.currentIndex, LightDMService.userRoles.NameRole) : ""
555 onLanguageChanged: LightDMService.infographic.readyForDataChange()
560 objectName: "biometryd"
562 property var operation: null
563 readonly property bool idEnabled: root.active &&
564 root.allowFingerprint &&
565 Powerd.status === Powerd.On &&
566 Biometryd.available &&
567 AccountsService.enableFingerprintIdentification
569 function cancelOperation() {
576 function restartOperation() {
580 var identifier = Biometryd.defaultDevice.identifier;
581 operation = identifier.identifyUser();
582 operation.start(biometryd);
586 function failOperation(reason) {
587 console.log("Failed to identify user by fingerprint:", reason);
589 if (!d.secureFingerprint) {
590 d.startUnlock(false /* toTheRight */); // use normal login instead
592 var msg = d.secureFingerprint ? i18n.tr("Try again") : "";
593 d.showFingerprintMessage(msg);
596 Component.onCompleted: restartOperation()
597 Component.onDestruction: cancelOperation()
598 onIdEnabledChanged: restartOperation()
601 if (!d.secureFingerprint) {
602 failOperation("fingerprint reader is locked");
605 if (result !== LightDMService.users.data(d.currentIndex, LightDMService.userRoles.UidRole)) {
606 AccountsService.failedFingerprintLogins++;
607 failOperation("not the selected user");
610 console.log("Identified user by fingerprint:", result);
612 loader.item.enabled = false;
613 loader.item.notifyAuthenticationSucceeded(true /* showFakePassword */);
616 root.forcedUnlock = true;
619 if (!d.secureFingerprint) {
620 failOperation("fingerprint reader is locked");
622 AccountsService.failedFingerprintLogins++;
623 failOperation(reason);