Chromad: Add authentication flow

chrome/browser/chromeos/login/helper.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/helper.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_view.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/grit/generated_resources.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/network/managed_network_configuration_handler.h"
 #include "chromeos/network/network_connection_handler.h"
 #include "chromeos/network/network_handler.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_state_handler.h"
 #include "chromeos/network/network_util.h"
 #include "components/guest_view/browser/guest_view_manager.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace chromeos {
@@ skipping 43 matching lines @@
   content::WebContents* guest_contents = nullptr;
   manager->ForEachGuest(embedder, base::Bind(&FindGuestByPartitionName,
                                              partition_name, &guest_contents));
 
   return guest_contents ? content::BrowserContext::GetStoragePartition(
                               guest_contents->GetBrowserContext(),
                               guest_contents->GetSiteInstance())
                         : nullptr;
 }
 
+base::ScopedFD GetDataReadPipe(const std::string& data) {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
+  int pipe_fds[2];
+  if (!base::CreateLocalNonBlockingPipe(pipe_fds)) {
+    LOG(ERROR) << "Failed to create pipe";
+    return base::ScopedFD();
+  }
+  base::ScopedFD pipe_read_end(pipe_fds[0]);
+  base::ScopedFD pipe_write_end(pipe_fds[1]);
+
+  if (!base::WriteFileDescriptor(pipe_write_end.get(), data.c_str(),
+                                 data.size())) {
+    LOG(ERROR) << "Failed to write to pipe";
+    return base::ScopedFD();
+  }
+  return pipe_read_end;
+}

[xiyuan, 2016/11/28 23:43:05]

nit: insert an empty line between this line and the next line.

[Roman Sorokin (ftl), 2016/12/02 12:35:12]

Done.

 }  // namespace
 
 gfx::Rect CalculateScreenBounds(const gfx::Size& size) {
   gfx::Rect bounds = display::Screen::GetScreen()->GetPrimaryDisplay().bounds();
   if (!size.IsEmpty()) {
     int horizontal_diff = bounds.width() - size.width();
     int vertical_diff = bounds.height() - size.height();
     bounds.Inset(horizontal_diff / 2, vertical_diff / 2);
   }
   return bounds;
@@ skipping 144 matching lines @@
 
     if (!signin_partition)
       return nullptr;
 
     return signin_partition->GetURLRequestContext();
   }
 
   return ProfileHelper::GetSigninProfile()->GetRequestContext();
 }
 
+// Returns file descriptor of a pipe, open for reading. Pipe keeps the passed
+// data

[xiyuan, 2016/11/28 23:43:05]

nit: Move the comment to header. And end it with a ".".

[Roman Sorokin (ftl), 2016/12/02 12:35:12]

Done.

+void GetPipeReadEnd(const std::string& data,
+                    const OnPipeReadyCallback& callback) {
+  base::PostTaskAndReplyWithResult(
+      content::BrowserThread::GetBlockingPool(), FROM_HERE,
+      base::Bind(&GetDataReadPipe, data), callback);
+}
+
 }  // namespace login
-
 }  // namespace chromeos