зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
4.0 KiB
C++
117 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "SettingsChangeObserver.h"
|
|
#include "ContentBlockingUserInteraction.h"
|
|
|
|
#include "mozilla/Services.h"
|
|
#include "mozilla/Preferences.h"
|
|
#include "nsIObserverService.h"
|
|
#include "nsIPermission.h"
|
|
#include "nsTArray.h"
|
|
|
|
using namespace mozilla;
|
|
|
|
namespace {
|
|
|
|
UniquePtr<nsTArray<SettingsChangeObserver::AntiTrackingSettingsChangedCallback>>
|
|
gSettingsChangedCallbacks;
|
|
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(SettingsChangeObserver, nsIObserver)
|
|
|
|
NS_IMETHODIMP SettingsChangeObserver::Observe(nsISupports* aSubject,
|
|
const char* aTopic,
|
|
const char16_t* aData) {
|
|
if (!strcmp(aTopic, "xpcom-shutdown")) {
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
obs->RemoveObserver(this, "perm-added");
|
|
obs->RemoveObserver(this, "perm-changed");
|
|
obs->RemoveObserver(this, "perm-cleared");
|
|
obs->RemoveObserver(this, "perm-deleted");
|
|
obs->RemoveObserver(this, "xpcom-shutdown");
|
|
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged,
|
|
"browser.contentblocking.");
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "network.cookie.");
|
|
Preferences::UnregisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "privacy.");
|
|
|
|
gSettingsChangedCallbacks = nullptr;
|
|
}
|
|
} else {
|
|
nsCOMPtr<nsIPermission> perm = do_QueryInterface(aSubject);
|
|
if (perm) {
|
|
nsAutoCString type;
|
|
nsresult rv = perm->GetType(type);
|
|
if (NS_WARN_IF(NS_FAILED(rv)) || type.Equals(USER_INTERACTION_PERM)) {
|
|
// Ignore failures or notifications that have been sent because of
|
|
// user interactions.
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
RunAntiTrackingSettingsChangedCallbacks();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void SettingsChangeObserver::PrivacyPrefChanged(const char* aPref,
|
|
void* aClosure) {
|
|
RunAntiTrackingSettingsChangedCallbacks();
|
|
}
|
|
|
|
// static
|
|
void SettingsChangeObserver::RunAntiTrackingSettingsChangedCallbacks() {
|
|
if (gSettingsChangedCallbacks) {
|
|
for (auto& callback : *gSettingsChangedCallbacks) {
|
|
callback();
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
void SettingsChangeObserver::OnAntiTrackingSettingsChanged(
|
|
const SettingsChangeObserver::AntiTrackingSettingsChangedCallback&
|
|
aCallback) {
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
// It is possible that while we have some data in our cache, something
|
|
// changes in our environment that causes the anti-tracking checks below to
|
|
// change their response. Therefore, we need to clear our cache when we
|
|
// detect a related change.
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "browser.contentblocking.");
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "network.cookie.");
|
|
Preferences::RegisterPrefixCallback(
|
|
SettingsChangeObserver::PrivacyPrefChanged, "privacy.");
|
|
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
RefPtr<SettingsChangeObserver> observer = new SettingsChangeObserver();
|
|
obs->AddObserver(observer, "perm-added", false);
|
|
obs->AddObserver(observer, "perm-changed", false);
|
|
obs->AddObserver(observer, "perm-cleared", false);
|
|
obs->AddObserver(observer, "perm-deleted", false);
|
|
obs->AddObserver(observer, "xpcom-shutdown", false);
|
|
}
|
|
|
|
gSettingsChangedCallbacks =
|
|
MakeUnique<nsTArray<AntiTrackingSettingsChangedCallback>>();
|
|
|
|
initialized = true;
|
|
}
|
|
|
|
gSettingsChangedCallbacks->AppendElement(aCallback);
|
|
}
|