r5sdk/r5dev/vpc/keyvalues.cpp

#include "core/stdafx.h"
#include "vpc/keyvalues.h"
#include "rtech/stryder.h"
#include "engine/sys_dll2.h"

///////////////////////////////////////////////////////////////////////////////
std::vector<std::string> g_szAllPlaylists = { "none" };
CKeyValuesSystem* g_pKeyValuesSystem = reinterpret_cast<CKeyValuesSystem*>(p_KeyValues_Init.FindPatternSelf("48 8D ?? ?? ?? ?? 01", ADDRESS::Direction::DOWN, 100).ResolveRelativeAddressSelf(0x3, 0x7).GetPtr());

#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
KeyValues** g_pPlaylistKeyValues = reinterpret_cast<KeyValues**>(p_Stryder_StitchRequest.FindPatternSelf("48 8B 2D", ADDRESS::Direction::DOWN, 100).ResolveRelativeAddressSelf(0x3, 0x7).GetPtr()); // Get the KeyValue for the playlist file.
#elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
KeyValues** g_pPlaylistKeyValues = reinterpret_cast<KeyValues**>(p_Stryder_StitchRequest.FindPatternSelf("48 8B 0D", ADDRESS::Direction::DOWN, 100).ResolveRelativeAddressSelf(0x3, 0x7).GetPtr()); // Get the KeyValue for the playlist file.
#endif

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CKeyValueSystem_InitPlaylist()
{
	while (true)
	{
		if ((*g_pPlaylistKeyValues))
		{
			KeyValues* playlists = (*g_pPlaylistKeyValues)->FindKey("Playlists", false); // Find playlists key.
			if (playlists)
			{
				g_szAllPlaylists.clear();
				for (KeyValues* dat = playlists->m_pSub; dat != nullptr; dat = dat->m_pPeer) // Parse through all sub keys.
				{
					g_szAllPlaylists.push_back(dat->GetName()); // Get all playlist names.
				}

				break; // Break if playlist got filled.
			}
			std::this_thread::sleep_for(std::chrono::milliseconds(50));
		}
		std::this_thread::sleep_for(std::chrono::milliseconds(50));
	}
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
bool HKeyValues_LoadPlaylist(const char* playlist)
{
	memset(g_pMapVPKCache, 0, 0x40); // Clear VPK cache to prevent crash while loading playlist.

	CHAR sPlaylistPath[] = "\x77\x27\x35\x2b\x2c\x6c\x2b\x2c\x2b";
	PCHAR curr = sPlaylistPath;
	while (*curr)
	{
		*curr ^= 'B';
		++curr;
	}

	if (FileExists(sPlaylistPath))
	{
		std::uint8_t verifyPlaylistIntegrity[] = // Very hacky way for alternative inline assembly for x64..
		{
			0x48, 0x8B, 0x45, 0x58,       // mov rcx, playlist
			0xC7, 0x00, 0x00, 0x00, 0x00, // test playlist, playlist
			0x00
		};
		void* verifyPlaylistIntegrityFn = nullptr;
		VirtualAlloc(verifyPlaylistIntegrity, 10, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
		memcpy(&verifyPlaylistIntegrityFn, (const void*)verifyPlaylistIntegrity, 9);
		reinterpret_cast<void(*)()>(verifyPlaylistIntegrityFn)();
	}

	return KeyValues_LoadPlaylist(playlist); // Parse playlist.
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
const char* KeyValues::GetName()
{
	return g_pKeyValuesSystem->GetStringForSymbol(MAKE_3_BYTES_FROM_1_AND_2(m_iKeyNameCaseSensitive, m_iKeyNameCaseSensitive2));
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CKeyValueSystem_Init()
{
	std::thread t1(CKeyValueSystem_InitPlaylist); // Start thread to grab playlists.
	t1.detach(); // Detach thread from current one.
}

///////////////////////////////////////////////////////////////////////////////
void CKeyValueSystem_Attach()
{
	DetourAttach((LPVOID*)&KeyValues_LoadPlaylist, &HKeyValues_LoadPlaylist);
}

void CKeyValueSystem_Detach()
{
	DetourDetach((LPVOID*)&KeyValues_LoadPlaylist, &HKeyValues_LoadPlaylist);
}