iw4x-client/src/Components/Modules/Playlist.cpp

#include "..\..\STDInclude.hpp"

namespace Components
{
	std::string Playlist::CurrentPlaylistBuffer;

	void Playlist::LoadPlaylist()
	{
		// Check if playlist already loaded
		if (Utils::Hook::Get<bool>(0x1AD3680)) return;

		std::string playlistFilename = Dvar::Var("playlistFilename").Get<char*>();
		FileSystem::File playlist(playlistFilename);

		if (playlist.Exists())
		{
			Logger::Print("Parsing playlist '%s'...\n", playlist.GetName().data());
			Game::Live_ParsePlaylists(playlist.GetBuffer().data());
			Utils::Hook::Set<bool>(0x1AD3680, true); // Playlist loaded
		}
		else
		{
			Logger::Print("Unable to load playlist '%s'!\n", playlist.GetName().data());
		}
	}

	DWORD Playlist::StorePlaylistStub(const char** buffer)
	{
		Playlist::CurrentPlaylistBuffer = *buffer;

		return Utils::Hook::Call<DWORD(const char**)>(0x4C0350)(buffer);
	}

	void Playlist::PlaylistRequest(Network::Address address, std::string data)
	{
		Logger::Print("Received playlist request, sending currently stored buffer.\n");
		Network::Send(address, std::string("playlistresponse\n") + Playlist::CurrentPlaylistBuffer);
	}

	void Playlist::PlaylistReponse(Network::Address address, std::string data)
	{
		if (Party::PlaylistAwaiting())
		{
			if (address == Party::Target())
			{
				Logger::Print("Received playlist response, loading and continuing connection.\n");
				Game::Live_ParsePlaylists(data.data());
				Party::PlaylistContinue();
			}
			else
			{
				Logger::Print("Received playlist from someone else than our target host, ignoring it.\n");
			}
		}
		else
		{
			Logger::Print("Received stray playlist response, ignoring it.\n");
		}
	}

	Playlist::Playlist()
	{
		// Apply new playlist
		char* playlist = "mp_playlists_dlc2";
		Utils::Hook::Set<char*>(0x494803, playlist);
		Utils::Hook::Set<char*>(0x4C6EC1, playlist);
		Utils::Hook::Set<char*>(0x4CF7F9, playlist);
		Utils::Hook::Set<char*>(0x4D6E63, playlist);
		Utils::Hook::Set<char*>(0x4D7358, playlist);
		Utils::Hook::Set<char*>(0x4D73C8, playlist);
		Utils::Hook::Set<char*>(0x4F4EA1, playlist);
		Utils::Hook::Set<char*>(0x4D47FB, "mp_playlists_dlc2.ff");
		Utils::Hook::Set<char*>(0x60B06E, "playlists.patch2");

		// disable playlist download function
		Utils::Hook::Set<BYTE>(0x4D4790, 0xC3);

		// Load playlist, but don't delete it
		Utils::Hook::Nop(0x4D6EBB, 5);
		Utils::Hook::Nop(0x4D6E67, 5);
		Utils::Hook::Nop(0x4D6E71, 2);

		// playlist dvar 'validity check'
		Utils::Hook::Set<BYTE>(0x4B1170, 0xC3);

		// disable playlist checking
		Utils::Hook::Set<BYTE>(0x5B69E9, 0xEB);// too new
		Utils::Hook::Set<BYTE>(0x5B696E, 0xEB); // too old

		//Got playlists is true
		//Utils::Hook::Set<bool>(0x1AD3680, true);

		// Store playlist buffer on load
		Utils::Hook(0x42961C, Playlist::StorePlaylistStub, HOOK_CALL).Install()->Quick();

		if (Dedicated::IsDedicated())
		{
			// Custom playlist loading
			Utils::Hook(0x420B5A, Playlist::LoadPlaylist, HOOK_JUMP).Install()->Quick();

			// disable playlist.ff loading function
			Utils::Hook::Set<BYTE>(0x4D6E60, 0xC3);
		}

		Network::Handle("getplaylist", PlaylistRequest);
		Network::Handle("playlistresponse", PlaylistReponse);
	}

	Playlist::~Playlist()
	{
		Playlist::CurrentPlaylistBuffer.clear();
	}
}