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// Copyright 2013 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.
//
// CRX filesystem is a filesystem that allows an extension to read its own
// package directory tree. See ppapi/examples/crxfs for example.
//
// IMPLEMENTATION
//
// The implementation involves both browser and renderer. In order to provide
// readonly access to CRX filesystem (i.e. extension directory), we create an
// "isolated filesystem" pointing to current extension directory in browser.
// Then browser grants read permission to renderer, and tells plugin the
// filesystem id, or fsid.
//
// Once the plugin receives the fsid, it creates a PPB_FileSystem and forwards
// the fsid to PepperFileSystemHost in order to construct root url.
#ifndef PPAPI_PROXY_ISOLATED_FILE_SYSTEM_PRIVATE_RESOURCE_H_
#define PPAPI_PROXY_ISOLATED_FILE_SYSTEM_PRIVATE_RESOURCE_H_
#include <string>
#include "base/memory/ref_counted.h"
#include "ppapi/proxy/connection.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/thunk/ppb_isolated_file_system_private_api.h"
namespace ppapi {
class TrackedCallback;
namespace proxy {
class ResourceMessageReplyParams;
class PPAPI_PROXY_EXPORT IsolatedFileSystemPrivateResource
: public PluginResource,
public thunk::PPB_IsolatedFileSystem_Private_API {
public:
IsolatedFileSystemPrivateResource(
Connection connection, PP_Instance instance);
virtual ~IsolatedFileSystemPrivateResource();
// Resource overrides.
virtual thunk::PPB_IsolatedFileSystem_Private_API*
AsPPB_IsolatedFileSystem_Private_API() OVERRIDE;
// PPB_IsolatedFileSystem_Private_API implementation.
virtual int32_t Open(PP_Instance instance,
PP_IsolatedFileSystemType_Private type,
PP_Resource* file_system_resource,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
private:
void OnBrowserOpenComplete(PP_IsolatedFileSystemType_Private type,
PP_Resource* file_system_resource,
scoped_refptr<TrackedCallback> callback,
const ResourceMessageReplyParams& params,
const std::string& fsid);
DISALLOW_COPY_AND_ASSIGN(IsolatedFileSystemPrivateResource);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_ISOLATED_FILE_SYSTEM_PRIVATE_RESOURCE_H_
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