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/* -*- 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,
#include "ContentBlockingTelemetryService.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/PermissionManager.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/Telemetry.h"
#include "AntiTrackingLog.h"
#include "prtime.h"
#include "nsIObserverService.h"
#include "nsIPermission.h"
#include "nsTArray.h"
using namespace mozilla;
NS_IMPL_ISUPPORTS(ContentBlockingTelemetryService, nsIObserver)
static StaticRefPtr<ContentBlockingTelemetryService>
sContentBlockingTelemetryService;
/* static */
already_AddRefed<ContentBlockingTelemetryService>
ContentBlockingTelemetryService::GetSingleton() {
if (!sContentBlockingTelemetryService) {
sContentBlockingTelemetryService = new ContentBlockingTelemetryService();
ClearOnShutdown(&sContentBlockingTelemetryService);
}
RefPtr<ContentBlockingTelemetryService> service =
sContentBlockingTelemetryService;
return service.forget();
}
NS_IMETHODIMP
ContentBlockingTelemetryService::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData) {
if (strcmp(aTopic, "idle-daily") == 0) {
ReportStoragePermissionExpire();
return NS_OK;
}
return NS_OK;
}
void ContentBlockingTelemetryService::ReportStoragePermissionExpire() {
MOZ_ASSERT(XRE_IsParentProcess());
LOG(("Start to report storage permission expire."));
PermissionManager* permManager = PermissionManager::GetInstance();
if (NS_WARN_IF(!permManager)) {
LOG(("Permission manager is null, bailing out early"));
return;
}
nsTArray<RefPtr<nsIPermission>> permissions;
nsresult rv =
permManager->GetAllWithTypePrefix("3rdPartyStorage"_ns, permissions);
if (NS_WARN_IF(NS_FAILED(rv))) {
LOG(("Fail to get all storage access permissions."));
return;
}
nsTArray<RefPtr<nsIPermission>> framePermissions;
rv = permManager->GetAllWithTypePrefix("3rdPartyFrameStorage"_ns,
framePermissions);
if (NS_WARN_IF(NS_FAILED(rv))) {
LOG(("Fail to get all frame storage access permissions."));
return;
}
if (!permissions.AppendElements(framePermissions, fallible)) {
LOG(("Fail to combine all storage access permissions."));
return;
}
nsTArray<uint32_t> records;
for (const auto& permission : permissions) {
if (!permission) {
LOG(("Couldn't get the permission for unknown reasons"));
continue;
}
uint32_t expireType;
rv = permission->GetExpireType(&expireType);
if (NS_WARN_IF(NS_FAILED(rv))) {
LOG(("Couldn't get the expire type."));
continue;
}
// We only care about permissions that have a EXPIRE_TIME as the expire
// type.
if (expireType != nsIPermissionManager::EXPIRE_TIME) {
continue;
}
// Collect how much longer the storage permission will be valid for, in
// days.
int64_t expirationTime = 0;
rv = permission->GetExpireTime(&expirationTime);
if (NS_WARN_IF(NS_FAILED(rv))) {
LOG(("Couldn't get the expire time."));
continue;
}
expirationTime -= (PR_Now() / PR_USEC_PER_MSEC);
// Skip expired permissions.
if (expirationTime <= 0) {
continue;
}
int64_t expireDays = expirationTime / 1000 / 60 / 60 / 24;
records.AppendElement(expireDays);
}
if (!records.IsEmpty()) {
Telemetry::Accumulate(Telemetry::STORAGE_ACCESS_REMAINING_DAYS, records);
}
}