1 | /* |
2 | * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All Rights Reserved. |
3 | * Copyright (C) 2009 Torch Mobile, Inc. |
4 | * Copyright 2010, The Android Open Source Project |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #include "config.h" |
29 | #include "Geolocation.h" |
30 | |
31 | #if ENABLE(GEOLOCATION) |
32 | |
33 | #include "Coordinates.h" |
34 | #include "Document.h" |
35 | #include "Frame.h" |
36 | #include "GeoNotifier.h" |
37 | #include "GeolocationController.h" |
38 | #include "GeolocationError.h" |
39 | #include "GeolocationPosition.h" |
40 | #include "Geoposition.h" |
41 | #include "Page.h" |
42 | #include "PositionError.h" |
43 | #include "RuntimeApplicationChecks.h" |
44 | #include "SecurityOrigin.h" |
45 | #include <wtf/IsoMallocInlines.h> |
46 | #include <wtf/Ref.h> |
47 | #include <wtf/text/StringBuilder.h> |
48 | |
49 | namespace WebCore { |
50 | |
51 | static const ASCIILiteral permissionDeniedErrorMessage { "User denied Geolocation"_s }; |
52 | static const ASCIILiteral failedToStartServiceErrorMessage { "Failed to start Geolocation service"_s }; |
53 | static const ASCIILiteral framelessDocumentErrorMessage { "Geolocation cannot be used in frameless documents"_s }; |
54 | static const ASCIILiteral originCannotRequestGeolocationErrorMessage { "Origin does not have permission to use Geolocation service"_s }; |
55 | |
56 | WTF_MAKE_ISO_ALLOCATED_IMPL(Geolocation); |
57 | |
58 | static RefPtr<Geoposition> createGeoposition(Optional<GeolocationPosition>&& position) |
59 | { |
60 | if (!position) |
61 | return nullptr; |
62 | |
63 | DOMTimeStamp timestamp = convertSecondsToDOMTimeStamp(position->timestamp); |
64 | return Geoposition::create(Coordinates::create(WTFMove(position.value())), timestamp); |
65 | } |
66 | |
67 | static Ref<PositionError> createPositionError(GeolocationError& error) |
68 | { |
69 | PositionError::ErrorCode code = PositionError::POSITION_UNAVAILABLE; |
70 | switch (error.code()) { |
71 | case GeolocationError::PermissionDenied: |
72 | code = PositionError::PERMISSION_DENIED; |
73 | break; |
74 | case GeolocationError::PositionUnavailable: |
75 | code = PositionError::POSITION_UNAVAILABLE; |
76 | break; |
77 | } |
78 | |
79 | return PositionError::create(code, error.message()); |
80 | } |
81 | |
82 | bool Geolocation::Watchers::add(int id, RefPtr<GeoNotifier>&& notifier) |
83 | { |
84 | ASSERT(id > 0); |
85 | |
86 | if (!m_idToNotifierMap.add(id, notifier.get()).isNewEntry) |
87 | return false; |
88 | m_notifierToIdMap.set(WTFMove(notifier), id); |
89 | return true; |
90 | } |
91 | |
92 | GeoNotifier* Geolocation::Watchers::find(int id) |
93 | { |
94 | ASSERT(id > 0); |
95 | return m_idToNotifierMap.get(id); |
96 | } |
97 | |
98 | void Geolocation::Watchers::remove(int id) |
99 | { |
100 | ASSERT(id > 0); |
101 | if (auto notifier = m_idToNotifierMap.take(id)) |
102 | m_notifierToIdMap.remove(notifier); |
103 | } |
104 | |
105 | void Geolocation::Watchers::remove(GeoNotifier* notifier) |
106 | { |
107 | if (auto identifier = m_notifierToIdMap.take(notifier)) |
108 | m_idToNotifierMap.remove(identifier); |
109 | } |
110 | |
111 | bool Geolocation::Watchers::contains(GeoNotifier* notifier) const |
112 | { |
113 | return m_notifierToIdMap.contains(notifier); |
114 | } |
115 | |
116 | void Geolocation::Watchers::clear() |
117 | { |
118 | m_idToNotifierMap.clear(); |
119 | m_notifierToIdMap.clear(); |
120 | } |
121 | |
122 | bool Geolocation::Watchers::isEmpty() const |
123 | { |
124 | return m_idToNotifierMap.isEmpty(); |
125 | } |
126 | |
127 | void Geolocation::Watchers::getNotifiersVector(GeoNotifierVector& copy) const |
128 | { |
129 | copy = copyToVector(m_idToNotifierMap.values()); |
130 | } |
131 | |
132 | Ref<Geolocation> Geolocation::create(ScriptExecutionContext* context) |
133 | { |
134 | auto geolocation = adoptRef(*new Geolocation(context)); |
135 | geolocation.get().suspendIfNeeded(); |
136 | return geolocation; |
137 | } |
138 | |
139 | Geolocation::Geolocation(ScriptExecutionContext* context) |
140 | : ActiveDOMObject(context) |
141 | , m_allowGeolocation(Unknown) |
142 | , m_isSuspended(false) |
143 | , m_hasChangedPosition(false) |
144 | , m_resumeTimer(*this, &Geolocation::resumeTimerFired) |
145 | { |
146 | } |
147 | |
148 | Geolocation::~Geolocation() |
149 | { |
150 | ASSERT(m_allowGeolocation != InProgress); |
151 | } |
152 | |
153 | SecurityOrigin* Geolocation::securityOrigin() const |
154 | { |
155 | return scriptExecutionContext()->securityOrigin(); |
156 | } |
157 | |
158 | Page* Geolocation::page() const |
159 | { |
160 | return document() ? document()->page() : nullptr; |
161 | } |
162 | |
163 | bool Geolocation::canSuspendForDocumentSuspension() const |
164 | { |
165 | return true; |
166 | } |
167 | |
168 | void Geolocation::suspend(ReasonForSuspension reason) |
169 | { |
170 | if (reason == ReasonForSuspension::PageCache) { |
171 | stop(); |
172 | m_resetOnResume = true; |
173 | } |
174 | |
175 | // Suspend GeoNotifier timeout timers. |
176 | if (hasListeners()) |
177 | stopTimers(); |
178 | |
179 | m_isSuspended = true; |
180 | m_resumeTimer.stop(); |
181 | ActiveDOMObject::suspend(reason); |
182 | } |
183 | |
184 | void Geolocation::resume() |
185 | { |
186 | #if USE(WEB_THREAD) |
187 | ASSERT(WebThreadIsLockedOrDisabled()); |
188 | #endif |
189 | ActiveDOMObject::resume(); |
190 | |
191 | if (!m_resumeTimer.isActive()) |
192 | m_resumeTimer.startOneShot(0_s); |
193 | } |
194 | |
195 | void Geolocation::resumeTimerFired() |
196 | { |
197 | m_isSuspended = false; |
198 | |
199 | if (m_resetOnResume) { |
200 | resetAllGeolocationPermission(); |
201 | m_resetOnResume = false; |
202 | } |
203 | |
204 | // Resume GeoNotifier timeout timers. |
205 | if (hasListeners()) { |
206 | for (auto& notifier : m_oneShots) |
207 | notifier->startTimerIfNeeded(); |
208 | GeoNotifierVector watcherCopy; |
209 | m_watchers.getNotifiersVector(watcherCopy); |
210 | for (auto& watcher : watcherCopy) |
211 | watcher->startTimerIfNeeded(); |
212 | } |
213 | |
214 | if ((isAllowed() || isDenied()) && !m_pendingForPermissionNotifiers.isEmpty()) { |
215 | // The pending permission was granted while the object was suspended. |
216 | setIsAllowed(isAllowed()); |
217 | ASSERT(!m_hasChangedPosition); |
218 | ASSERT(!m_errorWaitingForResume); |
219 | return; |
220 | } |
221 | |
222 | if (isDenied() && hasListeners()) { |
223 | // The permission was revoked while the object was suspended. |
224 | setIsAllowed(false); |
225 | return; |
226 | } |
227 | |
228 | if (m_hasChangedPosition) { |
229 | positionChanged(); |
230 | m_hasChangedPosition = false; |
231 | } |
232 | |
233 | if (m_errorWaitingForResume) { |
234 | handleError(*m_errorWaitingForResume); |
235 | m_errorWaitingForResume = nullptr; |
236 | } |
237 | } |
238 | |
239 | void Geolocation::resetAllGeolocationPermission() |
240 | { |
241 | if (m_isSuspended) { |
242 | m_resetOnResume = true; |
243 | return; |
244 | } |
245 | |
246 | if (m_allowGeolocation == InProgress) { |
247 | Page* page = this->page(); |
248 | if (page) |
249 | GeolocationController::from(page)->cancelPermissionRequest(*this); |
250 | |
251 | // This return is not technically correct as GeolocationController::cancelPermissionRequest() should have cleared the active request. |
252 | // Neither iOS nor OS X supports cancelPermissionRequest() (https://bugs.webkit.org/show_bug.cgi?id=89524), so we workaround that and let ongoing requests complete. :( |
253 | return; |
254 | } |
255 | |
256 | // 1) Reset our own state. |
257 | stopUpdating(); |
258 | m_allowGeolocation = Unknown; |
259 | m_hasChangedPosition = false; |
260 | m_errorWaitingForResume = nullptr; |
261 | |
262 | // 2) Request new permission for the active notifiers. |
263 | stopTimers(); |
264 | |
265 | // Go over the one shot and re-request permission. |
266 | for (auto& notifier : m_oneShots) |
267 | startRequest(notifier.get()); |
268 | // Go over the watchers and re-request permission. |
269 | GeoNotifierVector watcherCopy; |
270 | m_watchers.getNotifiersVector(watcherCopy); |
271 | for (auto& watcher : watcherCopy) |
272 | startRequest(watcher.get()); |
273 | } |
274 | |
275 | void Geolocation::stop() |
276 | { |
277 | Page* page = this->page(); |
278 | if (page && m_allowGeolocation == InProgress) |
279 | GeolocationController::from(page)->cancelPermissionRequest(*this); |
280 | // The frame may be moving to a new page and we want to get the permissions from the new page's client. |
281 | m_allowGeolocation = Unknown; |
282 | cancelAllRequests(); |
283 | stopUpdating(); |
284 | m_hasChangedPosition = false; |
285 | m_errorWaitingForResume = nullptr; |
286 | m_pendingForPermissionNotifiers.clear(); |
287 | } |
288 | |
289 | const char* Geolocation::activeDOMObjectName() const |
290 | { |
291 | return "Geolocation" ; |
292 | } |
293 | |
294 | Geoposition* Geolocation::lastPosition() |
295 | { |
296 | Page* page = this->page(); |
297 | if (!page) |
298 | return nullptr; |
299 | |
300 | m_lastPosition = createGeoposition(GeolocationController::from(page)->lastPosition()); |
301 | |
302 | return m_lastPosition.get(); |
303 | } |
304 | |
305 | void Geolocation::getCurrentPosition(Ref<PositionCallback>&& successCallback, RefPtr<PositionErrorCallback>&& errorCallback, PositionOptions&& options) |
306 | { |
307 | if (!frame()) |
308 | return; |
309 | |
310 | auto notifier = GeoNotifier::create(*this, WTFMove(successCallback), WTFMove(errorCallback), WTFMove(options)); |
311 | startRequest(notifier.ptr()); |
312 | |
313 | m_oneShots.add(WTFMove(notifier)); |
314 | } |
315 | |
316 | int Geolocation::watchPosition(Ref<PositionCallback>&& successCallback, RefPtr<PositionErrorCallback>&& errorCallback, PositionOptions&& options) |
317 | { |
318 | if (!frame()) |
319 | return 0; |
320 | |
321 | auto notifier = GeoNotifier::create(*this, WTFMove(successCallback), WTFMove(errorCallback), WTFMove(options)); |
322 | startRequest(notifier.ptr()); |
323 | |
324 | int watchID; |
325 | // Keep asking for the next id until we're given one that we don't already have. |
326 | do { |
327 | watchID = m_scriptExecutionContext->circularSequentialID(); |
328 | } while (!m_watchers.add(watchID, notifier.copyRef())); |
329 | return watchID; |
330 | } |
331 | |
332 | static void logError(const String& target, const bool isSecure, const bool isMixedContent, Document* document) |
333 | { |
334 | StringBuilder message; |
335 | message.append("[blocked] Access to geolocation was blocked over" ); |
336 | |
337 | if (!isSecure) |
338 | message.append(" insecure connection to " ); |
339 | else if (isMixedContent) |
340 | message.append(" secure connection with mixed content to " ); |
341 | else |
342 | return; |
343 | |
344 | message.append(target); |
345 | message.append(".\n" ); |
346 | document->addConsoleMessage(MessageSource::Security, MessageLevel::Error, message.toString()); |
347 | } |
348 | |
349 | // FIXME: remove this function when rdar://problem/32137821 is fixed. |
350 | static bool isRequestFromIBooks() |
351 | { |
352 | #if PLATFORM(MAC) |
353 | return MacApplication::isIBooks(); |
354 | #elif PLATFORM(IOS_FAMILY) |
355 | return IOSApplication::isIBooks(); |
356 | #endif |
357 | return false; |
358 | } |
359 | |
360 | bool Geolocation::shouldBlockGeolocationRequests() |
361 | { |
362 | bool isSecure = SecurityOrigin::isSecure(document()->url()); |
363 | bool hasMixedContent = !document()->foundMixedContent().isEmpty(); |
364 | bool isLocalOrigin = securityOrigin()->isLocal(); |
365 | if (securityOrigin()->canRequestGeolocation()) { |
366 | if (isLocalOrigin || (isSecure && !hasMixedContent) || isRequestFromIBooks()) |
367 | return false; |
368 | } |
369 | |
370 | logError(securityOrigin()->toString(), isSecure, hasMixedContent, document()); |
371 | return true; |
372 | } |
373 | |
374 | void Geolocation::startRequest(GeoNotifier* notifier) |
375 | { |
376 | if (shouldBlockGeolocationRequests()) { |
377 | notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, originCannotRequestGeolocationErrorMessage)); |
378 | return; |
379 | } |
380 | document()->setGeolocationAccessed(); |
381 | |
382 | // Check whether permissions have already been denied. Note that if this is the case, |
383 | // the permission state can not change again in the lifetime of this page. |
384 | if (isDenied()) |
385 | notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage)); |
386 | else if (haveSuitableCachedPosition(notifier->options())) |
387 | notifier->setUseCachedPosition(); |
388 | else if (notifier->hasZeroTimeout()) |
389 | notifier->startTimerIfNeeded(); |
390 | else if (!isAllowed()) { |
391 | // if we don't yet have permission, request for permission before calling startUpdating() |
392 | m_pendingForPermissionNotifiers.add(notifier); |
393 | requestPermission(); |
394 | } else if (startUpdating(notifier)) |
395 | notifier->startTimerIfNeeded(); |
396 | else |
397 | notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage)); |
398 | } |
399 | |
400 | void Geolocation::fatalErrorOccurred(GeoNotifier* notifier) |
401 | { |
402 | // This request has failed fatally. Remove it from our lists. |
403 | m_oneShots.remove(notifier); |
404 | m_watchers.remove(notifier); |
405 | |
406 | if (!hasListeners()) |
407 | stopUpdating(); |
408 | } |
409 | |
410 | void Geolocation::requestUsesCachedPosition(GeoNotifier* notifier) |
411 | { |
412 | // This is called asynchronously, so the permissions could have been denied |
413 | // since we last checked in startRequest. |
414 | if (isDenied()) { |
415 | notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage)); |
416 | return; |
417 | } |
418 | |
419 | m_requestsAwaitingCachedPosition.add(notifier); |
420 | |
421 | // If permissions are allowed, make the callback |
422 | if (isAllowed()) { |
423 | makeCachedPositionCallbacks(); |
424 | return; |
425 | } |
426 | |
427 | // Request permissions, which may be synchronous or asynchronous. |
428 | requestPermission(); |
429 | } |
430 | |
431 | void Geolocation::makeCachedPositionCallbacks() |
432 | { |
433 | // All modifications to m_requestsAwaitingCachedPosition are done |
434 | // asynchronously, so we don't need to worry about it being modified from |
435 | // the callbacks. |
436 | for (auto& notifier : m_requestsAwaitingCachedPosition) { |
437 | // FIXME: This seems wrong, since makeCachedPositionCallbacks() is called in a branch where |
438 | // lastPosition() is known to be null in Geolocation::setIsAllowed(). |
439 | notifier->runSuccessCallback(lastPosition()); |
440 | |
441 | // If this is a one-shot request, stop it. Otherwise, if the watch still |
442 | // exists, start the service to get updates. |
443 | if (!m_oneShots.remove(notifier.get()) && m_watchers.contains(notifier.get())) { |
444 | if (notifier->hasZeroTimeout() || startUpdating(notifier.get())) |
445 | notifier->startTimerIfNeeded(); |
446 | else |
447 | notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage)); |
448 | } |
449 | } |
450 | |
451 | m_requestsAwaitingCachedPosition.clear(); |
452 | |
453 | if (!hasListeners()) |
454 | stopUpdating(); |
455 | } |
456 | |
457 | void Geolocation::requestTimedOut(GeoNotifier* notifier) |
458 | { |
459 | // If this is a one-shot request, stop it. |
460 | m_oneShots.remove(notifier); |
461 | |
462 | if (!hasListeners()) |
463 | stopUpdating(); |
464 | } |
465 | |
466 | bool Geolocation::haveSuitableCachedPosition(const PositionOptions& options) |
467 | { |
468 | Geoposition* cachedPosition = lastPosition(); |
469 | if (!cachedPosition) |
470 | return false; |
471 | if (!options.maximumAge) |
472 | return false; |
473 | DOMTimeStamp currentTimeMillis = convertSecondsToDOMTimeStamp(WallTime::now().secondsSinceEpoch()); |
474 | return cachedPosition->timestamp() > currentTimeMillis - options.maximumAge; |
475 | } |
476 | |
477 | void Geolocation::clearWatch(int watchID) |
478 | { |
479 | if (watchID <= 0) |
480 | return; |
481 | |
482 | if (GeoNotifier* notifier = m_watchers.find(watchID)) |
483 | m_pendingForPermissionNotifiers.remove(notifier); |
484 | m_watchers.remove(watchID); |
485 | |
486 | if (!hasListeners()) |
487 | stopUpdating(); |
488 | } |
489 | |
490 | void Geolocation::setIsAllowed(bool allowed) |
491 | { |
492 | // Protect the Geolocation object from garbage collection during a callback. |
493 | Ref<Geolocation> protectedThis(*this); |
494 | |
495 | // This may be due to either a new position from the service, or a cached |
496 | // position. |
497 | m_allowGeolocation = allowed ? Yes : No; |
498 | |
499 | if (m_isSuspended) |
500 | return; |
501 | |
502 | // Permission request was made during the startRequest process |
503 | if (!m_pendingForPermissionNotifiers.isEmpty()) { |
504 | handlePendingPermissionNotifiers(); |
505 | m_pendingForPermissionNotifiers.clear(); |
506 | return; |
507 | } |
508 | |
509 | if (!isAllowed()) { |
510 | auto error = PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage); |
511 | error->setIsFatal(true); |
512 | handleError(error); |
513 | m_requestsAwaitingCachedPosition.clear(); |
514 | m_hasChangedPosition = false; |
515 | m_errorWaitingForResume = nullptr; |
516 | return; |
517 | } |
518 | |
519 | // If the service has a last position, use it to call back for all requests. |
520 | // If any of the requests are waiting for permission for a cached position, |
521 | // the position from the service will be at least as fresh. |
522 | if (RefPtr<Geoposition> position = lastPosition()) |
523 | makeSuccessCallbacks(*position); |
524 | else |
525 | makeCachedPositionCallbacks(); |
526 | } |
527 | |
528 | void Geolocation::sendError(GeoNotifierVector& notifiers, PositionError& error) |
529 | { |
530 | for (auto& notifier : notifiers) |
531 | notifier->runErrorCallback(error); |
532 | } |
533 | |
534 | void Geolocation::sendPosition(GeoNotifierVector& notifiers, Geoposition& position) |
535 | { |
536 | for (auto& notifier : notifiers) |
537 | notifier->runSuccessCallback(&position); |
538 | } |
539 | |
540 | void Geolocation::stopTimer(GeoNotifierVector& notifiers) |
541 | { |
542 | for (auto& notifier : notifiers) |
543 | notifier->stopTimer(); |
544 | } |
545 | |
546 | void Geolocation::stopTimersForOneShots() |
547 | { |
548 | auto copy = copyToVector(m_oneShots); |
549 | stopTimer(copy); |
550 | } |
551 | |
552 | void Geolocation::stopTimersForWatchers() |
553 | { |
554 | GeoNotifierVector copy; |
555 | m_watchers.getNotifiersVector(copy); |
556 | |
557 | stopTimer(copy); |
558 | } |
559 | |
560 | void Geolocation::stopTimers() |
561 | { |
562 | stopTimersForOneShots(); |
563 | stopTimersForWatchers(); |
564 | } |
565 | |
566 | void Geolocation::cancelRequests(GeoNotifierVector& notifiers) |
567 | { |
568 | for (auto& notifier : notifiers) |
569 | notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, framelessDocumentErrorMessage)); |
570 | } |
571 | |
572 | void Geolocation::cancelAllRequests() |
573 | { |
574 | auto copy = copyToVector(m_oneShots); |
575 | cancelRequests(copy); |
576 | m_watchers.getNotifiersVector(copy); |
577 | cancelRequests(copy); |
578 | } |
579 | |
580 | void Geolocation::(GeoNotifierVector& notifiers, GeoNotifierVector* cached) |
581 | { |
582 | GeoNotifierVector nonCached; |
583 | for (auto& notifier : notifiers) { |
584 | if (notifier->useCachedPosition()) { |
585 | if (cached) |
586 | cached->append(notifier.get()); |
587 | } else |
588 | nonCached.append(notifier.get()); |
589 | } |
590 | notifiers.swap(nonCached); |
591 | } |
592 | |
593 | void Geolocation::copyToSet(const GeoNotifierVector& src, GeoNotifierSet& dest) |
594 | { |
595 | for (auto& notifier : src) |
596 | dest.add(notifier.get()); |
597 | } |
598 | |
599 | void Geolocation::handleError(PositionError& error) |
600 | { |
601 | auto oneShotsCopy = copyToVector(m_oneShots); |
602 | |
603 | GeoNotifierVector watchersCopy; |
604 | m_watchers.getNotifiersVector(watchersCopy); |
605 | |
606 | // Clear the lists before we make the callbacks, to avoid clearing notifiers |
607 | // added by calls to Geolocation methods from the callbacks, and to prevent |
608 | // further callbacks to these notifiers. |
609 | GeoNotifierVector oneShotsWithCachedPosition; |
610 | m_oneShots.clear(); |
611 | if (error.isFatal()) |
612 | m_watchers.clear(); |
613 | else { |
614 | // Don't send non-fatal errors to notifiers due to receive a cached position. |
615 | extractNotifiersWithCachedPosition(oneShotsCopy, &oneShotsWithCachedPosition); |
616 | extractNotifiersWithCachedPosition(watchersCopy, 0); |
617 | } |
618 | |
619 | sendError(oneShotsCopy, error); |
620 | sendError(watchersCopy, error); |
621 | |
622 | // hasListeners() doesn't distinguish between notifiers due to receive a |
623 | // cached position and those requiring a fresh position. Perform the check |
624 | // before restoring the notifiers below. |
625 | if (!hasListeners()) |
626 | stopUpdating(); |
627 | |
628 | // Maintain a reference to the cached notifiers until their timer fires. |
629 | copyToSet(oneShotsWithCachedPosition, m_oneShots); |
630 | } |
631 | |
632 | void Geolocation::requestPermission() |
633 | { |
634 | if (m_allowGeolocation > Unknown) |
635 | return; |
636 | |
637 | Page* page = this->page(); |
638 | if (!page) |
639 | return; |
640 | |
641 | m_allowGeolocation = InProgress; |
642 | |
643 | // Ask the embedder: it maintains the geolocation challenge policy itself. |
644 | GeolocationController::from(page)->requestPermission(*this); |
645 | } |
646 | |
647 | void Geolocation::makeSuccessCallbacks(Geoposition& position) |
648 | { |
649 | ASSERT(lastPosition()); |
650 | ASSERT(isAllowed()); |
651 | |
652 | auto oneShotsCopy = copyToVector(m_oneShots); |
653 | |
654 | GeoNotifierVector watchersCopy; |
655 | m_watchers.getNotifiersVector(watchersCopy); |
656 | |
657 | // Clear the lists before we make the callbacks, to avoid clearing notifiers |
658 | // added by calls to Geolocation methods from the callbacks, and to prevent |
659 | // further callbacks to these notifiers. |
660 | m_oneShots.clear(); |
661 | |
662 | sendPosition(oneShotsCopy, position); |
663 | sendPosition(watchersCopy, position); |
664 | |
665 | if (!hasListeners()) |
666 | stopUpdating(); |
667 | } |
668 | |
669 | void Geolocation::positionChanged() |
670 | { |
671 | ASSERT(isAllowed()); |
672 | |
673 | // Stop all currently running timers. |
674 | stopTimers(); |
675 | |
676 | if (m_isSuspended) { |
677 | m_hasChangedPosition = true; |
678 | return; |
679 | } |
680 | |
681 | RefPtr<Geoposition> position = lastPosition(); |
682 | ASSERT(position); |
683 | |
684 | makeSuccessCallbacks(*position); |
685 | } |
686 | |
687 | void Geolocation::setError(GeolocationError& error) |
688 | { |
689 | if (m_isSuspended) { |
690 | m_errorWaitingForResume = createPositionError(error); |
691 | return; |
692 | } |
693 | |
694 | auto positionError = createPositionError(error); |
695 | handleError(positionError); |
696 | } |
697 | |
698 | bool Geolocation::startUpdating(GeoNotifier* notifier) |
699 | { |
700 | Page* page = this->page(); |
701 | if (!page) |
702 | return false; |
703 | |
704 | GeolocationController::from(page)->addObserver(*this, notifier->options().enableHighAccuracy); |
705 | return true; |
706 | } |
707 | |
708 | void Geolocation::stopUpdating() |
709 | { |
710 | Page* page = this->page(); |
711 | if (!page) |
712 | return; |
713 | |
714 | GeolocationController::from(page)->removeObserver(*this); |
715 | } |
716 | |
717 | void Geolocation::handlePendingPermissionNotifiers() |
718 | { |
719 | // While we iterate through the list, we need not worry about list being modified as the permission |
720 | // is already set to Yes/No and no new listeners will be added to the pending list |
721 | for (auto& notifier : m_pendingForPermissionNotifiers) { |
722 | if (isAllowed()) { |
723 | // start all pending notification requests as permission granted. |
724 | // The notifier is always ref'ed by m_oneShots or m_watchers. |
725 | if (startUpdating(notifier.get())) |
726 | notifier->startTimerIfNeeded(); |
727 | else |
728 | notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage)); |
729 | } else |
730 | notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage)); |
731 | } |
732 | } |
733 | |
734 | } // namespace WebCore |
735 | |
736 | #endif // ENABLE(GEOLOCATION) |
737 | |