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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <string>
#include <unordered_map>
#include <boost/container/flat_map.hpp>
#include "common/common_types.h"
#include "core/hle/ipc.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/result.h"
#include "core/memory.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace Service
namespace Service {
static const int kMaxPortSize = 8; ///< Maximum size of a port name (8 characters)
static const u32 DefaultMaxSessions = 10; ///< Arbitrary default number of maximum connections to an HLE service
/**
* Interface implemented by HLE Session handlers.
* This can be provided to a ServerSession in order to hook into several relevant events (such as a new connection or a SyncRequest)
* so they can be implemented in the emulator.
*/
class SessionRequestHandler {
public:
/**
* Dispatches and handles a sync request from the emulated application.
* @param server_session The ServerSession that was triggered for this sync request,
* it should be used to differentiate which client (As in ClientSession) we're answering to.
* @returns ResultCode the result code of the translate operation.
*/
ResultCode HandleSyncRequest(Kernel::SharedPtr<Kernel::ServerSession> server_session);
/**
* Signals that a client has just connected to this HLE handler and keeps the
* associated ServerSession alive for the duration of the connection.
* @param server_session Owning pointer to the ServerSession associated with the connection.
*/
void ClientConnected(Kernel::SharedPtr<Kernel::ServerSession> server_session);
/**
* Signals that a client has just disconnected from this HLE handler and releases the
* associated ServerSession.
* @param server_session ServerSession associated with the connection.
*/
void ClientDisconnected(Kernel::SharedPtr<Kernel::ServerSession> server_session);
protected:
/**
* Handles a sync request from the emulated application and writes the response to the command buffer.
* TODO(Subv): Use a wrapper structure to hold all the information relevant to
* this request (ServerSession, Originator thread, Translated command buffer, etc).
*/
virtual void HandleSyncRequestImpl(Kernel::SharedPtr<Kernel::ServerSession> server_session) = 0;
private:
/**
* Performs command buffer translation for this request.
* The command buffer from the ServerSession thread's TLS is copied into a
* buffer and all descriptors in the buffer are processed.
* TODO(Subv): Implement this function, currently we do not support multiple processes running at once,
* but once that is implemented we'll need to properly translate all descriptors in the command buffer.
*/
ResultCode TranslateRequest(Kernel::SharedPtr<Kernel::ServerSession> server_session);
/// List of sessions that are connected to this handler.
/// A ServerSession whose server endpoint is an HLE implementation is kept alive by this list for the duration of the connection.
std::vector<Kernel::SharedPtr<Kernel::ServerSession>> connected_sessions;
};
/**
* Framework for implementing HLE service handlers which dispatch incoming SyncRequests based on a table mapping header ids to handler functions.
*/
class Interface : public SessionRequestHandler {
public:
/**
* Creates an HLE interface with the specified max sessions.
* @param max_sessions Maximum number of sessions that can be
* connected to this service at the same time.
*/
Interface(u32 max_sessions = DefaultMaxSessions);
virtual ~Interface();
std::string GetName() const {
return GetPortName();
}
virtual void SetVersion(u32 raw_version) {
version.raw = raw_version;
}
/**
* Gets the maximum allowed number of sessions that can be connected to this service at the same time.
* @returns The maximum number of connections allowed.
*/
u32 GetMaxSessions() const { return max_sessions; }
typedef void (*Function)(Interface*);
struct FunctionInfo {
u32 id;
Function func;
const char* name;
};
/**
* Gets the string name used by CTROS for a service
* @return Port name of service
*/
virtual std::string GetPortName() const {
return "[UNKNOWN SERVICE PORT]";
}
protected:
void HandleSyncRequestImpl(Kernel::SharedPtr<Kernel::ServerSession> server_session) override;
/**
* Registers the functions in the service
*/
template <size_t N>
inline void Register(const FunctionInfo (&functions)[N]) {
Register(functions, N);
}
void Register(const FunctionInfo* functions, size_t n);
union {
u32 raw;
BitField<0, 8, u32> major;
BitField<8, 8, u32> minor;
BitField<16, 8, u32> build;
BitField<24, 8, u32> revision;
} version = {};
private:
u32 max_sessions; ///< Maximum number of concurrent sessions that this service can handle.
boost::container::flat_map<u32, FunctionInfo> m_functions;
};
/// Initialize ServiceManager
void Init();
/// Shutdown ServiceManager
void Shutdown();
/// Map of named ports managed by the kernel, which can be retrieved using the ConnectToPort SVC.
extern std::unordered_map<std::string, Kernel::SharedPtr<Kernel::ClientPort>> g_kernel_named_ports;
/// Map of services registered with the "srv:" service, retrieved using GetServiceHandle.
extern std::unordered_map<std::string, Kernel::SharedPtr<Kernel::ClientPort>> g_srv_services;
/// Adds a service to the services table
void AddService(Interface* interface_);
} // namespace
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