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// 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.
#ifndef CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "base/platform_file.h"
#include "content/public/renderer/renderer_ppapi_host.h"
#include "ppapi/host/host_message_context.h"
#include "ppapi/host/resource_host.h"
#include "ppapi/shared_impl/file_io_state_manager.h"
#include "ppapi/thunk/ppb_file_ref_api.h"
#include "url/gurl.h"
#include "webkit/common/quota/quota_types.h"
using ppapi::host::ReplyMessageContext;
namespace content {
class QuotaFileIO;
class PepperFileIOHost : public ppapi::host::ResourceHost,
public base::SupportsWeakPtr<PepperFileIOHost> {
public:
typedef base::Callback<void (base::PlatformFileError)>
NotifyCloseFileCallback;
PepperFileIOHost(RendererPpapiHost* host,
PP_Instance instance,
PP_Resource resource);
virtual ~PepperFileIOHost();
// ppapi::host::ResourceHost override.
virtual int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) OVERRIDE;
private:
int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
PP_Resource file_ref_resource,
int32_t open_flags);
int32_t OnHostMsgQuery(ppapi::host::HostMessageContext* context);
int32_t OnHostMsgTouch(ppapi::host::HostMessageContext* context,
PP_Time last_access_time,
PP_Time last_modified_time);
int32_t OnHostMsgRead(ppapi::host::HostMessageContext* context,
int64_t offset,
int32_t bytes_to_read);
int32_t OnHostMsgWrite(ppapi::host::HostMessageContext* context,
int64_t offset,
const std::string& buffer);
int32_t OnHostMsgSetLength(ppapi::host::HostMessageContext* context,
int64_t length);
int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context);
// Private API.
int32_t OnHostMsgRequestOSFileHandle(
ppapi::host::HostMessageContext* context);
// Trusted API.
int32_t OnHostMsgGetOSFileDescriptor(
ppapi::host::HostMessageContext* context);
int32_t OnHostMsgWillWrite(ppapi::host::HostMessageContext* context,
int64_t offset,
int32_t bytes_to_write);
int32_t OnHostMsgWillSetLength(ppapi::host::HostMessageContext* context,
int64_t length);
// Callback handlers. These mostly convert the PlatformFileError to the
// PP_Error code and send back the reply. Note that the argument
// ReplyMessageContext is copied so that we have a closure containing all
// necessary information to reply.
void ExecutePlatformGeneralCallback(ReplyMessageContext reply_context,
base::PlatformFileError error_code);
void ExecutePlatformOpenFileCallback(ReplyMessageContext reply_context,
base::PlatformFileError error_code,
base::PassPlatformFile file);
void ExecutePlatformOpenFileSystemURLCallback(
ReplyMessageContext reply_context,
base::PlatformFileError error_code,
base::PassPlatformFile file,
quota::QuotaLimitType quota_policy,
const NotifyCloseFileCallback& callback);
void ExecutePlatformQueryCallback(ReplyMessageContext reply_context,
base::PlatformFileError error_code,
const base::PlatformFileInfo& file_info);
void ExecutePlatformReadCallback(ReplyMessageContext reply_context,
base::PlatformFileError error_code,
const char* data, int bytes_read);
void ExecutePlatformWriteCallback(ReplyMessageContext reply_context,
base::PlatformFileError error_code,
int bytes_written);
base::PlatformFile file_;
// The file system type specified in the Open() call. This will be
// PP_FILESYSTEMTYPE_INVALID before open was called. This value does not
// indicate that the open command actually succeeded.
PP_FileSystemType file_system_type_;
// Valid only for PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY}.
GURL file_system_url_;
// Used to check if we can pass file handle to plugins.
quota::QuotaLimitType quota_policy_;
// Callback function for notifying when the file handle is closed.
NotifyCloseFileCallback notify_close_file_callback_;
// Pointer to a QuotaFileIO instance, which is valid only while a file
// of type PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY} is opened.
scoped_ptr<QuotaFileIO> quota_file_io_;
bool is_running_in_process_;
int32_t open_flags_;
base::WeakPtrFactory<PepperFileIOHost> weak_factory_;
ppapi::FileIOStateManager state_manager_;
DISALLOW_COPY_AND_ASSIGN(PepperFileIOHost);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_
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