[WIP] Provided file system from NACL.

content/browser/renderer_host/pepper/pepper_filesystem_provider_host.cc

+// Copyright 2015 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 "content/browser/renderer_host/pepper/pepper_filesystem_provider_host.h"
+#include "content/browser/renderer_host/pepper/pepper_filesystem_provider_backend_chromeos.h"
+#include "content/public/browser/browser_ppapi_host.h"
+#include "ppapi/host/dispatch_host_message.h"
+#include "ppapi/host/ppapi_host.h"
+#include "ppapi/proxy/ppapi_messages.h"
+
+
+namespace content {
+
+PepperFilesystemProviderBackend::~PepperFilesystemProviderBackend(){}
+
+PepperFilesystemProviderHost::PepperFilesystemProviderHost(
+    BrowserPpapiHost* host, PP_Instance instance, PP_Resource resource)
+    : ResourceHost(
+         host ? host->GetPpapiHost() : nullptr,
+         instance,
+         resource )
+#if defined(OS_CHROMEOS)
+    , backend_( new PepperFilesystemProviderBackendChromeOS(
+                  host,
+                  instance,
+                  resource) )
+#endif
+{
+
+}
+
+PepperFilesystemProviderHost::~PepperFilesystemProviderHost() {
+
+}
+// This is a dispatcher for all requests
+// received from the plugin
+int32_t PepperFilesystemProviderHost::OnResourceMessageReceived(
+    const IPC::Message& msg, ppapi::host::HostMessageContext* context) {
+  if ( !host()->permissions().HasPermission( ppapi::PERMISSION_DEV ) )
+    return PP_ERROR_FAILED;
+
+  PPAPI_BEGIN_MESSAGE_MAP( PepperFilesystemProviderHost, msg )
+      PPAPI_DISPATCH_HOST_RESOURCE_CALL(
+          PpapiHostMsg_FilesystemProvider_Mount,
+          OnHostMsgMount )
+      PPAPI_DISPATCH_HOST_RESOURCE_CALL(
+          PpapiHostMsg_FilesystemProvider_Unmount,
+          OnHostMsgUnmount )
+      PPAPI_DISPATCH_HOST_RESOURCE_CALL(
+          PpapiHostMsg_FilesystemProvider_OperationResponse,
+          OnHostMsgPluginResponse)
+      PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(
+          PpapiHostMsg_FilesystemProvider_WriteAck,
+          OnHostMsgPluginWriteAck)
+  PPAPI_END_MESSAGE_MAP()
+
+  return PP_ERROR_FAILED;
+}
+
+int32_t PepperFilesystemProviderHost::OnHostMsgMount(
+    ppapi::host::HostMessageContext* context, const base::ListValue& request) {
+  if(!backend_.get())
+    return PP_ERROR_NOTSUPPORTED;
+  return backend_->SendMountRequest(context, request);
+}
+
+int32_t PepperFilesystemProviderHost::OnHostMsgUnmount(
+    ppapi::host::HostMessageContext* context, std::string filesystem_id) {
+  if(!backend_.get())
+    return PP_ERROR_NOTSUPPORTED;
+  return backend_->SendUnmountRequest(context,filesystem_id);
+}
+
+int32_t PepperFilesystemProviderHost::OnHostMsgPluginResponse(
+    ppapi::host::HostMessageContext* context, const base::ListValue& response) {
+  if(!backend_.get())
+    return PP_ERROR_NOTSUPPORTED;
+  return backend_->OnPluginResponse(context,response);
+}
+
+int32_t PepperFilesystemProviderHost::OnHostMsgPluginWriteAck(
+    ppapi::host::HostMessageContext* context) {
+  if(!backend_.get())
+    return PP_ERROR_NOTSUPPORTED;
+  return backend_->OnPluginWriteAck(context);
+}
+
+} // namespace content
+