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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include <map>
#include <string>
#include "common/common.h"
#include "common/common_types.h"
#include "core/mem_map.h"
#include "core/hle/syscall.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace Service
namespace Service {
typedef s32 NativeUID; ///< Native handle for a service
static const int kMaxPortSize = 0x08; ///< Maximum size of a port name (8 characters)
static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
/**
* Returns a pointer to the command buffer in kernel memory
* @param offset Optional offset into command buffer
* @return Pointer to command buffer
*/
inline static u32* GetCommandBuffer(const int offset=0) {
return (u32*)Memory::GetPointer(Memory::KERNEL_MEMORY_VADDR + kCommandHeaderOffset + offset);
}
class Manager;
/// Interface to a CTROS service
class Interface : NonCopyable {
friend class Manager;
public:
Interface() {
}
virtual ~Interface() {
}
typedef void (*Function)(Interface*);
struct FunctionInfo {
u32 id;
Function func;
std::string name;
};
/**
* Gets the UID for the serice
* @return UID of service in native format
*/
NativeUID GetUID() const {
return (NativeUID)m_uid;
}
/**
* Gets the string name used by CTROS for a service
* @return Port name of service
*/
virtual std::string GetPortName() const {
return "[UNKNOWN SERVICE PORT]";
}
/// Allocates a new handle for the service
Syscall::Handle NewHandle() {
Syscall::Handle handle = (m_handles.size() << 16) | m_uid;
m_handles.push_back(handle);
return handle;
}
/// Frees a handle from the service
void DeleteHandle(Syscall::Handle handle) {
for(auto iter = m_handles.begin(); iter != m_handles.end(); ++iter) {
if(*iter == handle) {
m_handles.erase(iter);
break;
}
}
}
/**
* Called when svcSendSyncRequest is called, loads command buffer and executes comand
* @return Return result of svcSendSyncRequest passed back to user app
*/
Syscall::Result Sync() {
u32* cmd_buff = GetCommandBuffer();
auto itr = m_functions.find(cmd_buff[0]);
if (itr == m_functions.end()) {
ERROR_LOG(OSHLE, "Unknown/unimplemented function: port = %s, command = 0x%08X!",
GetPortName().c_str(), cmd_buff[0]);
return -1;
}
if (itr->second.func == NULL) {
ERROR_LOG(OSHLE, "Unimplemented function: port = %s, name = %s!",
GetPortName().c_str(), itr->second.name.c_str());
return -1;
}
itr->second.func(this);
return 0; // TODO: Implement return from actual function
}
protected:
/**
* Registers the functions in the service
*/
void Register(const FunctionInfo* functions, int len) {
for (int i = 0; i < len; i++) {
m_functions[functions[i].id] = functions[i];
}
}
private:
u32 m_uid;
std::vector<Syscall::Handle> m_handles;
std::map<u32, FunctionInfo> m_functions;
};
/// Simple class to manage accessing services from ports and UID handles
class Manager {
public:
Manager();
~Manager();
/// Add a service to the manager (does not create it though)
void AddService(Interface* service);
/// Removes a service from the manager (does not delete it though)
void DeleteService(std::string port_name);
/// Get a Service Interface from its UID
Interface* FetchFromUID(u32 uid);
/// Get a Service Interface from its port
Interface* FetchFromPortName(std::string port_name);
private:
/// Convert an index into m_services vector into a UID
static u32 GetUIDFromIndex(const int index) {
return index | 0x10000000;
}
/// Convert a UID into an index into m_services
static int GetIndexFromUID(const u32 uid) {
return uid & 0x0FFFFFFF;
}
std::vector<Interface*> m_services;
std::map<std::string, u32> m_port_map;
};
/// Initialize ServiceManager
void Init();
/// Shutdown ServiceManager
void Shutdown();
extern Manager* g_manager; ///< Service manager
} // namespace
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