Implement open_resource in non-SFI mode.

components/nacl/renderer/manifest_service_channel.cc

 // Copyright 2014 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 "components/nacl/renderer/manifest_service_channel.h"
 
+#include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "content/public/renderer/render_thread.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
 namespace nacl {
 
 ManifestServiceChannel::ManifestServiceChannel(
+    bool pnacl_mode,
     const IPC::ChannelHandle& handle,
     const base::Callback<void(int32_t)>& connected_callback,
     scoped_ptr<Delegate> delegate,
     base::WaitableEvent* waitable_event)
-    : connected_callback_(connected_callback),
+    : pnacl_mode_(pnacl_mode),
+      connected_callback_(connected_callback),
       delegate_(delegate.Pass()),
       channel_(new IPC::SyncChannel(
           handle, IPC::Channel::MODE_CLIENT, this,
           content::RenderThread::Get()->GetIOMessageLoopProxy(),
-          true, waitable_event)) {
+          true, waitable_event)),
+      weak_ptr_factory_(this) {
 }
 
 ManifestServiceChannel::~ManifestServiceChannel() {
   if (!connected_callback_.is_null())
     base::ResetAndReturn(&connected_callback_).Run(PP_ERROR_FAILED);
 }
 
+void ManifestServiceChannel::Send(IPC::Message* message) {
+  channel_->Send(message);
+}
+
 bool ManifestServiceChannel::OnMessageReceived(const IPC::Message& message) {
-  // TODO(hidehiko): Implement OpenResource.
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ManifestServiceChannel, message)
       IPC_MESSAGE_HANDLER(PpapiHostMsg_StartupInitializationComplete,
                           OnStartupInitializationComplete)
+      IPC_MESSAGE_HANDLER_DELAY_REPLY(PpapiHostMsg_OpenResource,
+                                      OnOpenResource)
       IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void ManifestServiceChannel::OnChannelConnected(int32 peer_pid) {
   if (!connected_callback_.is_null())
     base::ResetAndReturn(&connected_callback_).Run(PP_OK);
 }
 
 void ManifestServiceChannel::OnChannelError() {
   if (!connected_callback_.is_null())
     base::ResetAndReturn(&connected_callback_).Run(PP_ERROR_FAILED);
 }
 
 void ManifestServiceChannel::OnStartupInitializationComplete() {
   delegate_->StartupInitializationComplete();
 }
 
+void ManifestServiceChannel::OnOpenResource(
+    const std::string& key, IPC::Message* reply) {
+  if (pnacl_mode_) {
+    // OpenResource() is disabled on PNaCl.
+    PpapiHostMsg_OpenResource::WriteReplyParams(
+        reply, ppapi::proxy::SerializedHandle());
+    Send(reply);
+    return;
+  }
+
+#if defined(OS_WIN)
+  // Currently this is used only for non-SFI mode, which is not supported on
+  // windows.
+  NOTREACHED();
+  // Returns an error for Release build.
+  PpapiHostMsg_OpenResource::WriteReplyParams(

[Mark Seaborn, 2014/05/01 06:32:35]

Could you reduce the duplication by doing:

#if !defined(OS_WIN)
  if (!pnacl_mode_) {
    delegate_->OpenResource(...);
    return;
  }
#endif
  PpapiHostMsg_OpenResource::WriteReplyParams(...);
  Send(reply);

[hidehiko, 2014/05/01 13:05:40]

Done.

+      reply, ppapi::proxy::SerializedHandle());
+  Send(reply);
+#else
+  delegate_->OpenResource(key,
+                          base::Bind(&ManifestServiceChannel::DidOpenResource,
+                                     weak_ptr_factory_.GetWeakPtr(), reply));
+#endif
+}
+
+#if !defined(OS_WIN)
+void ManifestServiceChannel::DidOpenResource(
+    IPC::Message* reply, const base::PlatformFile& platform_file) {
+  // Here, PlatformFileForTransit is alias of base::FileDescriptor.
+  PpapiHostMsg_OpenResource::WriteReplyParams(
+      reply,
+      ppapi::proxy::SerializedHandle(
+          ppapi::proxy::SerializedHandle::FILE,
+          base::FileDescriptor(platform_file, true)));
+  Send(reply);
+}
+#endif
+
 }  // namespace nacl