1 files changed, 146 insertions, 0 deletions
diff --git a/toolkit/xre/ProfileReset.cpp b/toolkit/xre/ProfileReset.cpp
new file mode 100644
index 0000000000..8ed01e6535
--- /dev/null
+++ b/toolkit/xre/ProfileReset.cpp
@@ -0,0 +1,146 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsIAppStartup.h"
+#include "nsIFile.h"
+#include "nsIStringBundle.h"
+#include "nsIToolkitProfile.h"
+#include "nsIWindowWatcher.h"
+
+#include "ProfileReset.h"
+
+#include "nsDirectoryServiceDefs.h"
+#include "nsDirectoryServiceUtils.h"
+#include "nsPIDOMWindow.h"
+#include "nsString.h"
+#include "mozilla/Components.h"
+#include "mozilla/XREAppData.h"
+
+#include "mozilla/SpinEventLoopUntil.h"
+#include "mozilla/Unused.h"
+
+using namespace mozilla;
+
+extern const XREAppData* gAppData;
+
+static const char kProfileProperties[] =
+    "chrome://mozapps/locale/profile/profileSelection.properties";
+
+/**
+ * Spin up a thread to backup the old profile's main directory and delete the
+ * profile's local directory. Once complete have the profile service remove the
+ * old profile and if necessary make the new profile the default.
+ */
+nsresult ProfileResetCleanup(nsToolkitProfileService* aService,
+                             nsIToolkitProfile* aOldProfile) {
+  nsresult rv;
+  nsCOMPtr<nsIFile> profileDir;
+  rv = aOldProfile->GetRootDir(getter_AddRefs(profileDir));
+  if (NS_FAILED(rv)) return rv;
+
+  nsCOMPtr<nsIFile> profileLocalDir;
+  rv = aOldProfile->GetLocalDir(getter_AddRefs(profileLocalDir));
+  if (NS_FAILED(rv)) return rv;
+
+  // Get the friendly name for the backup directory.
+  nsCOMPtr<nsIStringBundleService> sbs =
+      mozilla::components::StringBundle::Service();
+  if (!sbs) return NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIStringBundle> sb;
+  Unused << sbs->CreateBundle(kProfileProperties, getter_AddRefs(sb));
+  if (!sb) return NS_ERROR_FAILURE;
+
+  NS_ConvertUTF8toUTF16 appName(gAppData->name);
+  AutoTArray<nsString, 2> params = {appName, appName};
+
+  nsAutoString resetBackupDirectoryName;
+
+  static const char* kResetBackupDirectory = "resetBackupDirectory";
+  rv = sb->FormatStringFromName(kResetBackupDirectory, params,
+                                resetBackupDirectoryName);
+  if (NS_FAILED(rv)) return rv;
+
+  // Get info to copy the old root profile dir to the desktop as a backup.
+  nsCOMPtr<nsIFile> backupDest, containerDest, profileDest;
+  rv = NS_GetSpecialDirectory(NS_OS_DESKTOP_DIR, getter_AddRefs(backupDest));
+  if (NS_FAILED(rv)) {
+    // Fall back to the home directory if the desktop is not available.
+    rv = NS_GetSpecialDirectory(NS_OS_HOME_DIR, getter_AddRefs(backupDest));
+    if (NS_FAILED(rv)) return rv;
+  }
+
+  // Try to create a directory for all the backups
+  backupDest->Clone(getter_AddRefs(containerDest));
+  containerDest->Append(resetBackupDirectoryName);
+  rv = containerDest->Create(nsIFile::DIRECTORY_TYPE, 0700);
+  // It's OK if it already exists, if and only if it is a directory
+  if (rv == NS_ERROR_FILE_ALREADY_EXISTS) {
+    bool containerIsDir;
+    rv = containerDest->IsDirectory(&containerIsDir);
+    if (NS_FAILED(rv) || !containerIsDir) {
+      return rv;
+    }
+  } else if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  // Get the name of the profile
+  nsAutoString leafName;
+  rv = profileDir->GetLeafName(leafName);
+  if (NS_FAILED(rv)) return rv;
+
+  // Try to create a unique directory for the profile:
+  containerDest->Clone(getter_AddRefs(profileDest));
+  profileDest->Append(leafName);
+  rv = profileDest->CreateUnique(nsIFile::DIRECTORY_TYPE, 0700);
+  if (NS_FAILED(rv)) return rv;
+
+  // Get the unique profile name
+  rv = profileDest->GetLeafName(leafName);
+  if (NS_FAILED(rv)) return rv;
+
+  // Delete the empty directory that CreateUnique just created.
+  rv = profileDest->Remove(false);
+  if (NS_FAILED(rv)) return rv;
+
+  // Show a progress window while the cleanup happens since the disk I/O can
+  // take time.
+  nsCOMPtr<nsIWindowWatcher> windowWatcher(
+      do_GetService(NS_WINDOWWATCHER_CONTRACTID));
+  if (!windowWatcher) return NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIAppStartup> appStartup(components::AppStartup::Service());
+  if (!appStartup) return NS_ERROR_FAILURE;
+
+  nsCOMPtr<mozIDOMWindowProxy> progressWindow;
+  rv = windowWatcher->OpenWindow(nullptr, nsDependentCString(kResetProgressURL),
+                                 "_blank"_ns, "centerscreen,chrome,titlebar"_ns,
+                                 nullptr, getter_AddRefs(progressWindow));
+  if (NS_FAILED(rv)) return rv;
+
+  // Create a new thread to do the bulk of profile cleanup to stay responsive.
+  nsCOMPtr<nsIThread> cleanupThread;
+  rv = NS_NewNamedThread("ResetCleanup", getter_AddRefs(cleanupThread));
+  if (NS_SUCCEEDED(rv)) {
+    nsCOMPtr<nsIRunnable> runnable = new ProfileResetCleanupAsyncTask(
+        profileDir, profileLocalDir, containerDest, leafName);
+    cleanupThread->Dispatch(runnable, nsIThread::DISPATCH_NORMAL);
+    // The result callback will shut down the worker thread.
+
+    // Wait for the cleanup thread to complete.
+    SpinEventLoopUntil("xre:ProfileResetCreateBackup"_ns,
+                       [&]() { return gProfileResetCleanupCompleted; });
+  } else {
+    gProfileResetCleanupCompleted = true;
+    NS_WARNING("Cleanup thread creation failed");
+    return rv;
+  }
+  // Close the progress window now that the cleanup thread is done.
+  auto* piWindow = nsPIDOMWindowOuter::From(progressWindow);
+  piWindow->Close();
+
+  return aService->ApplyResetProfile(aOldProfile);
+}