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// Copyright (c) 2016 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 PPAPI_PROXY_VPN_PROVIDER_RESOURCE_H_
#define PPAPI_PROXY_VPN_PROVIDER_RESOURCE_H_
#include <memory>
#include <queue>
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/shared_impl/vpn_provider_util.h"
#include "ppapi/thunk/ppb_vpn_provider_api.h"
namespace ppapi {
namespace proxy {
class PPAPI_PROXY_EXPORT VpnProviderResource
: public PluginResource,
public NON_EXPORTED_BASE(thunk::PPB_VpnProvider_API) {
public:
VpnProviderResource(Connection connection, PP_Instance instance);
virtual ~VpnProviderResource();
// PluginResource implementation.
virtual thunk::PPB_VpnProvider_API* AsPPB_VpnProvider_API() override;
// PPB_VpnProvider_API implementation.
virtual int32_t Bind(const PP_Var& configuration_id,
const PP_Var& configuration_name,
const scoped_refptr<TrackedCallback>& callback) override;
virtual int32_t SendPacket(
const PP_Var& packet,
const scoped_refptr<TrackedCallback>& callback) override;
virtual int32_t ReceivePacket(
PP_Var* packet,
const scoped_refptr<TrackedCallback>& callback) override;
private:
// PluginResource overrides.
virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
const IPC::Message& msg) override;
// PPB_VpnProvider IPC Replies
void OnPluginMsgBindReply(const ResourceMessageReplyParams& params,
uint32_t queue_size,
uint32_t max_packet_size,
int32_t result);
void OnPluginMsgSendPacketReply(const ResourceMessageReplyParams& params,
uint32_t id);
// Browser callbacks
void OnPluginMsgOnUnbindReceived(const ResourceMessageReplyParams& params);
void OnPluginMsgOnPacketReceived(const ResourceMessageReplyParams& params,
uint32_t packet_size,
uint32_t id);
// Picks up a received packet and moves it to user buffer. This method is used
// in both ReceivePacket() for fast returning path, and in
// OnPluginMsgOnPacketReceived() for delayed callback invocations.
void WritePacket();
// Sends a packet to the browser. This method is used in both SendPacket() for
// fast path, and in OnPluginMsgSendPacketReply for processing previously
// queued packets.
int32_t DoSendPacket(const PP_Var& packet, uint32_t id);
scoped_refptr<TrackedCallback> bind_callback_;
scoped_refptr<TrackedCallback> send_packet_callback_;
scoped_refptr<TrackedCallback> receive_packet_callback_;
// Keeps a pointer to the provided callback variable. Received packet will be
// copied to this variable on ready.
PP_Var* receive_packet_callback_var_;
std::unique_ptr<ppapi::VpnProviderSharedBuffer> send_packet_buffer_;
std::unique_ptr<ppapi::VpnProviderSharedBuffer> recv_packet_buffer_;
std::queue<PP_Var> send_packets_;
std::queue<scoped_refptr<Var>> received_packets_;
// Connection bound state
bool bound_;
DISALLOW_COPY_AND_ASSIGN(VpnProviderResource);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_VPN_PROVIDER_RESOURCE_H_
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