Luma3DS-3GX/k11_extension/source/svc/GetHandleInfo.c

/*
*   This file is part of Luma3DS
*   Copyright (C) 2016-2019 Aurora Wright, TuxSH
*
*   This program is free software: you can redistribute it and/or modify
*   it under the terms of the GNU General Public License as published by
*   the Free Software Foundation, either version 3 of the License, or
*   (at your option) any later version.
*
*   This program is distributed in the hope that it will be useful,
*   but WITHOUT ANY WARRANTY; without even the implied warranty of
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*   GNU General Public License for more details.
*
*   You should have received a copy of the GNU General Public License
*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
*       * Requiring preservation of specified reasonable legal notices or
*         author attributions in that material or in the Appropriate Legal
*         Notices displayed by works containing it.
*       * Prohibiting misrepresentation of the origin of that material,
*         or requiring that modified versions of such material be marked in
*         reasonable ways as different from the original version.
*/
#include <string.h>

#include "svc/GetThreadInfo.h"

Result GetHandleInfoHook(s64 *out, Handle handle, u32 type)
{
    Result res = 0;

    if(type >= 0x10000)
    {
        KProcessHwInfo      *hwInfo;
        KProcessHandleTable *handleTable = handleTableOfProcess(currentCoreContext->objectContext.currentProcess);
        KAutoObject         *obj;

        if(handle == CUR_PROCESS_HANDLE)
        {
            obj = (KAutoObject *)(currentCoreContext->objectContext.currentProcess);
            KAutoObject__AddReference(obj);
        }
        else
            obj = KProcessHandleTable__ToKAutoObject(handleTable, handle);

        if(obj == NULL)
            return 0xD8E007F7;

        switch (type)
        {
            case 0x10000: ///< Get ctx id (should probably move it to GetProcessInfo)
            {
                if(strcmp(classNameOfAutoObject(obj), "KDebug") == 0)
                    hwInfo = hwInfoOfProcess(((KDebug *)obj)->owner);
                else if(strcmp(classNameOfAutoObject(obj), "KProcess") == 0)
                    hwInfo = hwInfoOfProcess((KProcess *)obj);
                else
                    hwInfo = NULL;

                *out = hwInfo != NULL ? KPROCESSHWINFO_GET_RVALUE(hwInfo, contextId) : -1;
                break;
            }
            case 0x10001: ///< Get referenced object flags (token)
            {
                KClassToken token;

                obj->vtable->GetClassToken(&token, obj);
                *out = token.flags;
                break;
            }
            case 0x10002: ///< Get object owner
            {
                Handle          hOut;
                KClassToken     token;
                KProcess *      owner = NULL;

                obj->vtable->GetClassToken(&token, obj);
                switch(token.flags)
                {
                    case TOKEN_KEVENT:
                        owner = ((KEvent *)obj)->owner;
                        break;
                    case TOKEN_KSEMAPHORE:
                        owner = ((KSemaphore *)obj)->owner;
                        break;
                    case TOKEN_KTIMER:
                        owner = ((KTimer *)obj)->owner;
                        break;
                    case TOKEN_KMUTEX:
                        owner = ((KMutex *)obj)->owner;
                        break;
                    case TOKEN_KDEBUG:
                        owner = ((KDebug *)obj)->owner;
                        break;
                    case TOKEN_KTHREAD:
                        owner = ((KThread *)obj)->ownerProcess;
                        break;
                    case TOKEN_KADDRESSARBITER:
                        owner = ((KAddressArbiter *)obj)->owner;
                        break;
                    case TOKEN_KSHAREDMEMORY:
                        owner = ((KSharedMemory *)obj)->owner;
                        break;
                    default:
                        break;
                }

                if (owner == NULL)
                    res =  0xD8E007F7;

                res = createHandleForThisProcess(&hOut, (KAutoObject *)owner);
                *out = hOut;

                break;
            }

            default:
                res = 0xF8C007F4;
                break;
        }

        obj->vtable->DecrementReferenceCount(obj);
        return res;
    }
    
    return GetHandleInfo(out, handle, type);
}