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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
#include "build/build_config.h"
#include "chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h"
#include "content/public/browser/browser_ppapi_host.h"
#include "ppapi/host/message_filter_host.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/host/resource_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_permissions.h"
using ppapi::host::MessageFilterHost;
using ppapi::host::ResourceHost;
using ppapi::host::ResourceMessageFilter;
ChromeBrowserPepperHostFactory::ChromeBrowserPepperHostFactory(
content::BrowserPpapiHost* host)
: host_(host) {}
ChromeBrowserPepperHostFactory::~ChromeBrowserPepperHostFactory() = default;
std::unique_ptr<ResourceHost>
ChromeBrowserPepperHostFactory::CreateResourceHost(
ppapi::host::PpapiHost* host,
PP_Resource resource,
PP_Instance instance,
const IPC::Message& message) {
DCHECK(host == host_->GetPpapiHost());
// Make sure the plugin is giving us a valid instance for this resource.
if (!host_->IsValidInstance(instance))
return nullptr;
// Permissions for the following interfaces will be checked at the
// time of the corresponding instance's methods calls (because
// permission check can be performed only on the UI
// thread). Currently these interfaces are available only for
// whitelisted apps which may not have access to the other private
// interfaces.
if (message.type() != PpapiHostMsg_IsolatedFileSystem_Create::ID)
return nullptr;
PepperIsolatedFileSystemMessageFilter* isolated_fs_filter =
PepperIsolatedFileSystemMessageFilter::Create(instance, host_);
if (!isolated_fs_filter)
return nullptr;
return std::make_unique<MessageFilterHost>(host, instance, resource,
isolated_fs_filter);
}
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