Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 327 insertions, 0 deletions

diff --git a/dom/serviceworkers/ServiceWorkerQuotaUtils.cpp b/dom/serviceworkers/ServiceWorkerQuotaUtils.cpp
new file mode 100644
index 0000000000..65e051eb40
--- /dev/null
+++ b/dom/serviceworkers/ServiceWorkerQuotaUtils.cpp
@@ -0,0 +1,327 @@
+/* -*- 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 "MainThreadUtils.h"
+#include "ServiceWorkerQuotaUtils.h"
+
+#include "mozilla/ScopeExit.h"
+#include "mozilla/Services.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/dom/quota/QuotaManagerService.h"
+#include "nsIClearDataService.h"
+#include "nsID.h"
+#include "nsIPrincipal.h"
+#include "nsIQuotaCallbacks.h"
+#include "nsIQuotaRequests.h"
+#include "nsIQuotaResults.h"
+#include "nsISupports.h"
+#include "nsIVariant.h"
+#include "nsServiceManagerUtils.h"
+
+using mozilla::dom::quota::QuotaManagerService;
+
+namespace mozilla::dom {
+
+/*
+ * QuotaUsageChecker implements the quota usage checking algorithm.
+ *
+ * 1. Getting the given origin/group usage through QuotaManagerService.
+ *    QuotaUsageCheck::Start() implements this step.
+ * 2. Checking if the group usage headroom is satisfied.
+ *    It could be following three situations.
+ *    a. Group headroom is satisfied without any usage mitigation.
+ *    b. Group headroom is satisfied after origin usage mitigation.
+ *       This invokes nsIClearDataService::DeleteDataFromPrincipal().
+ *    c. Group headroom is satisfied after group usage mitigation.
+ *       This invokes nsIClearDataService::DeleteDataFromBaseDomain().
+ *    QuotaUsageChecker::CheckQuotaHeadroom() implements this step.
+ *
+ * If the algorithm is done or error out, the QuotaUsageCheck::mCallback will
+ * be called with a bool result for external handling.
+ */
+class QuotaUsageChecker final : public nsIQuotaCallback,
+                                public nsIQuotaUsageCallback,
+                                public nsIClearDataCallback {
+ public:
+  NS_DECL_ISUPPORTS
+  // For QuotaManagerService::Estimate()
+  NS_DECL_NSIQUOTACALLBACK
+
+  // For QuotaManagerService::GetUsageForPrincipal()
+  NS_DECL_NSIQUOTAUSAGECALLBACK
+
+  // For nsIClearDataService::DeleteDataFromPrincipal() and
+  // nsIClearDataService::DeleteDataFromBaseDomain()
+  NS_DECL_NSICLEARDATACALLBACK
+
+  QuotaUsageChecker(nsIPrincipal* aPrincipal,
+                    ServiceWorkerQuotaMitigationCallback&& aCallback);
+
+  void Start();
+
+  void RunCallback(bool aResult);
+
+ private:
+  ~QuotaUsageChecker() = default;
+
+  // This is a general help method to get nsIQuotaResult/nsIQuotaUsageResult
+  // from nsIQuotaRequest/nsIQuotaUsageRequest
+  template <typename T, typename U>
+  nsresult GetResult(T* aRequest, U&);
+
+  void CheckQuotaHeadroom();
+
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+
+  // The external callback. Calling RunCallback(bool) instead of calling it
+  // directly, RunCallback(bool) handles the internal status.
+  ServiceWorkerQuotaMitigationCallback mCallback;
+  bool mGettingOriginUsageDone;
+  bool mGettingGroupUsageDone;
+  bool mIsChecking;
+  uint64_t mOriginUsage;
+  uint64_t mGroupUsage;
+  uint64_t mGroupLimit;
+};
+
+NS_IMPL_ISUPPORTS(QuotaUsageChecker, nsIQuotaCallback, nsIQuotaUsageCallback,
+                  nsIClearDataCallback)
+
+QuotaUsageChecker::QuotaUsageChecker(
+    nsIPrincipal* aPrincipal, ServiceWorkerQuotaMitigationCallback&& aCallback)
+    : mPrincipal(aPrincipal),
+      mCallback(std::move(aCallback)),
+      mGettingOriginUsageDone(false),
+      mGettingGroupUsageDone(false),
+      mIsChecking(false),
+      mOriginUsage(0),
+      mGroupUsage(0),
+      mGroupLimit(0) {}
+
+void QuotaUsageChecker::Start() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (mIsChecking) {
+    return;
+  }
+  mIsChecking = true;
+
+  RefPtr<QuotaUsageChecker> self = this;
+  auto scopeExit = MakeScopeExit([self]() { self->RunCallback(false); });
+
+  RefPtr<QuotaManagerService> qms = QuotaManagerService::GetOrCreate();
+  MOZ_ASSERT(qms);
+
+  // Asynchronious getting quota usage for principal
+  nsCOMPtr<nsIQuotaUsageRequest> usageRequest;
+  if (NS_WARN_IF(NS_FAILED(qms->GetUsageForPrincipal(
+          mPrincipal, this, false, getter_AddRefs(usageRequest))))) {
+    return;
+  }
+
+  // Asynchronious getting group usage and limit
+  nsCOMPtr<nsIQuotaRequest> request;
+  if (NS_WARN_IF(
+          NS_FAILED(qms->Estimate(mPrincipal, getter_AddRefs(request))))) {
+    return;
+  }
+  request->SetCallback(this);
+
+  scopeExit.release();
+}
+
+void QuotaUsageChecker::RunCallback(bool aResult) {
+  MOZ_ASSERT(mIsChecking && mCallback);
+  if (!mIsChecking) {
+    return;
+  }
+  mIsChecking = false;
+  mGettingOriginUsageDone = false;
+  mGettingGroupUsageDone = false;
+
+  mCallback(aResult);
+  mCallback = nullptr;
+}
+
+template <typename T, typename U>
+nsresult QuotaUsageChecker::GetResult(T* aRequest, U& aResult) {
+  nsCOMPtr<nsIVariant> result;
+  nsresult rv = aRequest->GetResult(getter_AddRefs(result));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  nsID* iid;
+  nsCOMPtr<nsISupports> supports;
+  rv = result->GetAsInterface(&iid, getter_AddRefs(supports));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  free(iid);
+
+  aResult = do_QueryInterface(supports);
+  return NS_OK;
+}
+
+void QuotaUsageChecker::CheckQuotaHeadroom() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  const uint64_t groupHeadroom =
+      static_cast<uint64_t>(
+          StaticPrefs::
+              dom_serviceWorkers_mitigations_group_usage_headroom_kb()) *
+      1024;
+  const uint64_t groupAvailable = mGroupLimit - mGroupUsage;
+
+  // Group usage head room is satisfied, does not need the usage mitigation.
+  if (groupAvailable > groupHeadroom) {
+    RunCallback(true);
+    return;
+  }
+
+  RefPtr<QuotaUsageChecker> self = this;
+  auto scopeExit = MakeScopeExit([self]() { self->RunCallback(false); });
+
+  nsCOMPtr<nsIClearDataService> csd =
+      do_GetService("@mozilla.org/clear-data-service;1");
+  MOZ_ASSERT(csd);
+
+  // Group usage headroom is not satisfied even removing the origin usage,
+  // clear all group usage.
+  if ((groupAvailable + mOriginUsage) < groupHeadroom) {
+    nsAutoCString host;
+    nsresult rv = mPrincipal->GetHost(host);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return;
+    }
+
+    rv = csd->DeleteDataFromBaseDomain(
+        host, false, nsIClearDataService::CLEAR_DOM_QUOTA, this);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return;
+    }
+
+    // clear the origin usage since it makes group usage headroom be satisifed.
+  } else {
+    nsresult rv = csd->DeleteDataFromPrincipal(
+        mPrincipal, false, nsIClearDataService::CLEAR_DOM_QUOTA, this);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return;
+    }
+  }
+
+  scopeExit.release();
+}
+
+// nsIQuotaUsageCallback implementation
+
+NS_IMETHODIMP QuotaUsageChecker::OnUsageResult(
+    nsIQuotaUsageRequest* aUsageRequest) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aUsageRequest);
+
+  RefPtr<QuotaUsageChecker> self = this;
+  auto scopeExit = MakeScopeExit([self]() { self->RunCallback(false); });
+
+  nsresult resultCode;
+  nsresult rv = aUsageRequest->GetResultCode(&resultCode);
+  if (NS_WARN_IF(NS_FAILED(rv) || NS_FAILED(resultCode))) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIQuotaOriginUsageResult> usageResult;
+  rv = GetResult(aUsageRequest, usageResult);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  MOZ_ASSERT(usageResult);
+
+  rv = usageResult->GetUsage(&mOriginUsage);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  MOZ_ASSERT(!mGettingOriginUsageDone);
+  mGettingOriginUsageDone = true;
+
+  scopeExit.release();
+
+  // Call CheckQuotaHeadroom() when both
+  // QuotaManagerService::GetUsageForPrincipal() and
+  // QuotaManagerService::Estimate() are done.
+  if (mGettingOriginUsageDone && mGettingGroupUsageDone) {
+    CheckQuotaHeadroom();
+  }
+  return NS_OK;
+}
+
+// nsIQuotaCallback implementation
+
+NS_IMETHODIMP QuotaUsageChecker::OnComplete(nsIQuotaRequest* aRequest) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aRequest);
+
+  RefPtr<QuotaUsageChecker> self = this;
+  auto scopeExit = MakeScopeExit([self]() { self->RunCallback(false); });
+
+  nsresult resultCode;
+  nsresult rv = aRequest->GetResultCode(&resultCode);
+  if (NS_WARN_IF(NS_FAILED(rv) || NS_FAILED(resultCode))) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIQuotaEstimateResult> estimateResult;
+  rv = GetResult(aRequest, estimateResult);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  MOZ_ASSERT(estimateResult);
+
+  rv = estimateResult->GetUsage(&mGroupUsage);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  rv = estimateResult->GetLimit(&mGroupLimit);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  MOZ_ASSERT(!mGettingGroupUsageDone);
+  mGettingGroupUsageDone = true;
+
+  scopeExit.release();
+
+  // Call CheckQuotaHeadroom() when both
+  // QuotaManagerService::GetUsageForPrincipal() and
+  // QuotaManagerService::Estimate() are done.
+  if (mGettingOriginUsageDone && mGettingGroupUsageDone) {
+    CheckQuotaHeadroom();
+  }
+  return NS_OK;
+}
+
+// nsIClearDataCallback implementation
+
+NS_IMETHODIMP QuotaUsageChecker::OnDataDeleted(uint32_t aFailedFlags) {
+  RunCallback(true);
+  return NS_OK;
+}
+
+// Helper methods in ServiceWorkerQuotaUtils.h
+
+void ClearQuotaUsageIfNeeded(nsIPrincipal* aPrincipal,
+                             ServiceWorkerQuotaMitigationCallback&& aCallback) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aPrincipal);
+
+  RefPtr<QuotaUsageChecker> checker =
+      MakeRefPtr<QuotaUsageChecker>(aPrincipal, std::move(aCallback));
+  checker->Start();
+}
+
+}  // namespace mozilla::dom