Add m-esr52 at 52.6.0

1 files changed, 243 insertions, 0 deletions

diff --git a/dom/cache/QuotaClient.cpp b/dom/cache/QuotaClient.cpp
new file mode 100644
index 000000000..5641c953c
--- /dev/null
+++ b/dom/cache/QuotaClient.cpp
@@ -0,0 +1,243 @@
+/* -*- 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 "mozilla/dom/cache/QuotaClient.h"
+
+#include "mozilla/dom/cache/Manager.h"
+#include "mozilla/dom/quota/QuotaManager.h"
+#include "mozilla/dom/quota/UsageInfo.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "nsIFile.h"
+#include "nsISimpleEnumerator.h"
+#include "nsThreadUtils.h"
+
+namespace {
+
+using mozilla::Atomic;
+using mozilla::dom::ContentParentId;
+using mozilla::dom::cache::Manager;
+using mozilla::dom::quota::Client;
+using mozilla::dom::quota::PersistenceType;
+using mozilla::dom::quota::QuotaManager;
+using mozilla::dom::quota::UsageInfo;
+using mozilla::ipc::AssertIsOnBackgroundThread;
+
+static nsresult
+GetBodyUsage(nsIFile* aDir, const Atomic<bool>& aCanceled,
+             UsageInfo* aUsageInfo)
+{
+  nsCOMPtr<nsISimpleEnumerator> entries;
+  nsresult rv = aDir->GetDirectoryEntries(getter_AddRefs(entries));
+  if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+  bool hasMore;
+  while (NS_SUCCEEDED(rv = entries->HasMoreElements(&hasMore)) && hasMore &&
+         !aCanceled) {
+    nsCOMPtr<nsISupports> entry;
+    rv = entries->GetNext(getter_AddRefs(entry));
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+    nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
+
+    bool isDir;
+    rv = file->IsDirectory(&isDir);
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+    if (isDir) {
+      rv = GetBodyUsage(file, aCanceled, aUsageInfo);
+      if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+      continue;
+    }
+
+    int64_t fileSize;
+    rv = file->GetFileSize(&fileSize);
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+    MOZ_DIAGNOSTIC_ASSERT(fileSize >= 0);
+
+    aUsageInfo->AppendToFileUsage(fileSize);
+  }
+
+  return NS_OK;
+}
+
+class CacheQuotaClient final : public Client
+{
+public:
+  virtual Type
+  GetType() override
+  {
+    return DOMCACHE;
+  }
+
+  virtual nsresult
+  InitOrigin(PersistenceType aPersistenceType, const nsACString& aGroup,
+             const nsACString& aOrigin, const AtomicBool& aCanceled,
+             UsageInfo* aUsageInfo) override
+  {
+    // The QuotaManager passes a nullptr UsageInfo if there is no quota being
+    // enforced against the origin.
+    if (!aUsageInfo) {
+      return NS_OK;
+    }
+
+    return GetUsageForOrigin(aPersistenceType, aGroup, aOrigin, aCanceled,
+                             aUsageInfo);
+  }
+
+  virtual nsresult
+  GetUsageForOrigin(PersistenceType aPersistenceType, const nsACString& aGroup,
+                    const nsACString& aOrigin, const AtomicBool& aCanceled,
+                    UsageInfo* aUsageInfo) override
+  {
+    MOZ_DIAGNOSTIC_ASSERT(aUsageInfo);
+
+    QuotaManager* qm = QuotaManager::Get();
+    MOZ_DIAGNOSTIC_ASSERT(qm);
+
+    nsCOMPtr<nsIFile> dir;
+    nsresult rv = qm->GetDirectoryForOrigin(aPersistenceType, aOrigin,
+                                            getter_AddRefs(dir));
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+    rv = dir->Append(NS_LITERAL_STRING(DOMCACHE_DIRECTORY_NAME));
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+    nsCOMPtr<nsISimpleEnumerator> entries;
+    rv = dir->GetDirectoryEntries(getter_AddRefs(entries));
+    if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+    bool hasMore;
+    while (NS_SUCCEEDED(rv = entries->HasMoreElements(&hasMore)) && hasMore &&
+           !aCanceled) {
+      nsCOMPtr<nsISupports> entry;
+      rv = entries->GetNext(getter_AddRefs(entry));
+      if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+      nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
+
+      nsAutoString leafName;
+      rv = file->GetLeafName(leafName);
+      if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+      bool isDir;
+      rv = file->IsDirectory(&isDir);
+      if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+      if (isDir) {
+        if (leafName.EqualsLiteral("morgue")) {
+          rv = GetBodyUsage(file, aCanceled, aUsageInfo);
+          if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+        } else {
+          NS_WARNING("Unknown Cache directory found!");
+        }
+
+        continue;
+      }
+
+      // Ignore transient sqlite files and marker files
+      if (leafName.EqualsLiteral("caches.sqlite-journal") ||
+          leafName.EqualsLiteral("caches.sqlite-shm") ||
+          leafName.Find(NS_LITERAL_CSTRING("caches.sqlite-mj"), false, 0, 0) == 0 ||
+          leafName.EqualsLiteral("context_open.marker")) {
+        continue;
+      }
+
+      if (leafName.EqualsLiteral("caches.sqlite") ||
+          leafName.EqualsLiteral("caches.sqlite-wal")) {
+        int64_t fileSize;
+        rv = file->GetFileSize(&fileSize);
+        if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+        MOZ_DIAGNOSTIC_ASSERT(fileSize >= 0);
+
+        aUsageInfo->AppendToDatabaseUsage(fileSize);
+        continue;
+      }
+
+      NS_WARNING("Unknown Cache file found!");
+    }
+
+    return NS_OK;
+  }
+
+  virtual void
+  OnOriginClearCompleted(PersistenceType aPersistenceType,
+                         const nsACString& aOrigin) override
+  {
+    // Nothing to do here.
+  }
+
+  virtual void
+  ReleaseIOThreadObjects() override
+  {
+    // Nothing to do here as the Context handles cleaning everything up
+    // automatically.
+  }
+
+  virtual void
+  AbortOperations(const nsACString& aOrigin) override
+  {
+    AssertIsOnBackgroundThread();
+
+    Manager::Abort(aOrigin);
+  }
+
+  virtual void
+  AbortOperationsForProcess(ContentParentId aContentParentId) override
+  {
+    // The Cache and Context can be shared by multiple client processes.  They
+    // are not exclusively owned by a single process.
+    //
+    // As far as I can tell this is used by QuotaManager to abort operations
+    // when a particular process goes away.  We definitely don't want this
+    // since we are shared.  Also, the Cache actor code already properly
+    // handles asynchronous actor destruction when the child process dies.
+    //
+    // Therefore, do nothing here.
+  }
+
+  virtual void
+  StartIdleMaintenance() override
+  { }
+
+  virtual void
+  StopIdleMaintenance() override
+  { }
+
+  virtual void
+  ShutdownWorkThreads() override
+  {
+    AssertIsOnBackgroundThread();
+
+    // spins the event loop and synchronously shuts down all Managers
+    Manager::ShutdownAll();
+  }
+
+private:
+  ~CacheQuotaClient()
+  {
+    AssertIsOnBackgroundThread();
+  }
+
+  NS_INLINE_DECL_REFCOUNTING(CacheQuotaClient, override)
+};
+
+} // namespace
+
+namespace mozilla {
+namespace dom {
+namespace cache {
+
+already_AddRefed<quota::Client> CreateQuotaClient()
+{
+  AssertIsOnBackgroundThread();
+
+  RefPtr<CacheQuotaClient> ref = new CacheQuotaClient();
+  return ref.forget();
+}
+
+} // namespace cache
+} // namespace dom
+} // namespace mozilla