MW2 177

// ==========================================================
// MW2 mp
//
// Component: IW4SP
// Sub-component: clientdll
// Purpose: Patches for multiplayer version 177
//
// Initial author: momo5502
// Started: 2014-02-15
// ==========================================================

#include "StdInc.h"

void PatchMW2_Steam();
void* ReallocateAssetPool(int type, unsigned int newSize);

DWORD SteamUserStuff177 = 0x47BDA0;
DWORD returnSuccess177 = 0x451169;
DWORD otherStuff177 = 0x42B210;

void __declspec(naked) steamInitPatch177()
{
    __asm
    {
        call SteamUserStuff177
        test al, al
        jz returnSafe
        jmp returnSuccess

returnSuccess:
        call otherStuff177
        test al, al
        jz returnSafe
        jmp returnSuccess177

returnSafe:
        mov al, 1
        retn
    }
}

cmd_function_t Cmd_OpenMenu;
void Cmd_OpenMenu_f()
{
    if (Cmd_Argc() != 2)
    {
        Com_Printf(0, "USAGE: openmenu <menu name>\n");
        return;
    }
    char* menu = Cmd_Argv(1);
    __asm
    {
        push menu
        push 62E2858h
        mov eax, 4CCE60h
        call eax
    }
}

void PatchMW2_FFHash()
{
    // basic checks (hash jumps, both normal and playlist)
    *(WORD*)0x5B97A3 = 0x9090;
    *(WORD*)0x5BA493 = 0x9090;

    *(WORD*)0x5B991C = 0x9090;
    *(WORD*)0x5BA60C = 0x9090;

    *(WORD*)0x5B97B4 = 0x9090;
    *(WORD*)0x5BA4A4 = 0x9090;

    // some other, unknown, check
    *(BYTE*)0x5B9912 = 0xB8;
    *(DWORD*)0x5B9913 = 1;

    *(BYTE*)0x5BA602 = 0xB8;
    *(DWORD*)0x5BA603 = 1;

    if (IsDebuggerPresent())
    {
        // dirty disk breakpoint
        *(BYTE*)0x4CF7F0 = 0xCC;
    }
}

void PatchMW2_177()
{
    version = 177;

    // Need to clean these up
    Cmd_AddCommand = (Cmd_AddCommand_t)0x470090;
    Com_Printf = (Com_Printf_t)0x402500;
    R_RegisterFont = (R_RegisterFont_t)0x505670;
    R_AddCmdDrawText = (R_AddCmdDrawText_t)0x509D80;
    Dvar_RegisterBool = (Dvar_RegisterBool_t)0x4CE1A0;
    Field_Clear = (Field_Clear_t)0x437EB0;
    Com_Milliseconds = (Com_Milliseconds_t)0x42A660;
    CL_IsCgameInitialized = (CL_IsCgameInitialized_t)0x43EB20;
    Dvar_FindVar = (Dvar_FindVar_t)0x4D5390;
    DB_LoadXAssets = (DB_LoadXAssets_t)0x4E5930;
    FS_WriteFile = (FS_WriteFile_t)0x426450;
    FS_ReadFile = (FS_ReadFile_t)0x4F4B90;
    FS_FreeFile = (FS_FreeFile_t)0x4416B0;

    imageVersionCheckHookLoc = 0x53A456;
    drawDevStuffHookLoc = 0x5ACB99;
    zoneLoadHookLoc = 0x4D7378;
    loadGameOverlayHookLoc = 0x60BE51;
    initializeRenderer = 0x4A6A70;
    SteamFriendsLoc = 0x6D75EC;

    language = (char*)0x649E748;
    dvarName = (dvar_t**)0xB2C680;

    cmd_id = (DWORD*)0x1AAC5D0;
    cmd_argc = (DWORD*)0x1AAC614;
    cmd_argv = (DWORD**)0x1AAC634;

    PatchMW2_Steam();

    // Extdll stuff
    PatchMW2_FifthInfinity();
    PatchMW2_T6Clips();
    PatchMW2_CryptoFiles();

    Cmd_AddCommand("openmenu", Cmd_OpenMenu_f, &Cmd_OpenMenu, 0);

    // Ignore DVAR error
    nop(0x5EC371, 5);
    nop(0x5EC44E, 5);
    nop(0x5EC4FA, 5);
    nop(0x5EC5A7, 5);

    // protocol version (workaround for hacks)
    *(int*)0x4FB501 = PROTOCOL; // was 8E

    // protocol command
    *(int*)0x4D36A9 = PROTOCOL; // was 8E
    *(int*)0x4D36AE = PROTOCOL; // was 8E
    *(int*)0x4D36B3 = PROTOCOL; // was 8E

    // Master server
    strcpy((char*)0x6D9CBC, MASTER_SERVER);

    // Entirely remove steam support... we don't want you to get banned :D
    *(WORD*)0x45114E = 0x01B0;
    nop(0x451145, 5);
    call(0x451160, steamInitPatch177, PATCH_JUMP);

    // external console
    nop(0x60BB58, 11);

    // SteamNetworking stuff
    *(BYTE*)0x4E6650 = 0xC3;

    // Stats stuff
    *(BYTE*)0x44AAF0 = 0xC3;
    *(BYTE*)0x467CC0 = 0xC3;

    // IDK what this does, could be important though...
    nop(0x593A1A, 3);
    nop(0x593A52, 2);
    //nop(0x593A6B, 2);

    // This looks dangerous to patch
    nop(0x594260, 5);

    // No improper quit popup
    *(BYTE*)0x4113BB = 0xEB;

    // Ignore popup_getting_data (need to pix the playlist stuff instead of patching this)
    *(BYTE*)0x473829 = 0xEB;

    // Let's assume we're online and we call ourself 'STEAM'
    *(BYTE*)0x4FC2D8 = 0xEB;
    *(BYTE*)0x4FC2F4 = 0xEB;
    *(BYTE*)0x649D6F0 = 1;

    // m2demo stuff
    *(DWORD*)0x6431D1 = (DWORD)"data";

    // Disable 'x' commands (except UPNP, that should be added lateron)
    //nop(0x4059E5, 5);

    // alt-tab support
    *(BYTE*)0x45ACE0 = 0xB0;
    *(BYTE*)0x45ACE1 = 0x01;
    *(BYTE*)0x45ACE2 = 0xC3;

    // xblive_rankedmatch
    *(DWORD*)0x420A34 = DVAR_FLAG_NONE;

    // cg_fov
    *(BYTE*)0x4F8E35 = DVAR_FLAG_SAVED;
    *(float*)0x6E5788 = 90.0f;

    // remove fs_game check for moddable rawfiles - allows non-fs_game to modify rawfiles
    *(WORD*)0x61AB76 = 0x9090;

    // remove limit on IWD file loading
    //memset((void*)0x643B94, 0x90, 6);
    *(BYTE*)0x642BF3 = 0xEB;

    // Force debug logging
    nop(0x4AA89F, 2);
    nop(0x4AA8A1, 6);

    // Configstring stuff
    *(BYTE*)0x5AC2C3 = 0xEB; // CL_ParseGamestate

    // Test
    ReallocateAssetPool(ASSET_TYPE_WEAPON, 2400);

    // Hide console
    FreeConsole();
}