1 files changed, 107 insertions, 0 deletions
diff --git a/NorthstarDLL/bansystem.cpp b/NorthstarDLL/bansystem.cpp
new file mode 100644
index 00000000..08115998
--- /dev/null
+++ b/NorthstarDLL/bansystem.cpp
@@ -0,0 +1,107 @@
+#pragma once
+#include "pch.h"
+#include "bansystem.h"
+#include "serverauthentication.h"
+#include "concommand.h"
+#include "miscserverscript.h"
+#include "configurables.h"
+
+#include <filesystem>
+
+const char* BANLIST_PATH_SUFFIX = "/banlist.txt";
+
+ServerBanSystem* g_ServerBanSystem;
+
+void ServerBanSystem::OpenBanlist()
+{
+	std::ifstream enabledModsStream(GetNorthstarPrefix() + "/banlist.txt");
+	std::stringstream enabledModsStringStream;
+
+	if (!enabledModsStream.fail())
+	{
+		std::string line;
+		while (std::getline(enabledModsStream, line))
+			m_vBannedUids.push_back(strtoll(line.c_str(), nullptr, 10));
+
+		enabledModsStream.close();
+	}
+
+	// open write stream for banlist
+	m_sBanlistStream.open(GetNorthstarPrefix() + "/banlist.txt", std::ofstream::out | std::ofstream::binary | std::ofstream::app);
+}
+
+void ServerBanSystem::ClearBanlist()
+{
+	m_vBannedUids.clear();
+
+	// reopen the file, don't provide std::ofstream::app so it clears on open
+	m_sBanlistStream.close();
+	m_sBanlistStream.open(GetNorthstarPrefix() + "/banlist.txt", std::ofstream::out | std::ofstream::binary);
+}
+
+void ServerBanSystem::BanUID(uint64_t uid)
+{
+	m_vBannedUids.push_back(uid);
+	m_sBanlistStream << std::to_string(uid) << std::endl;
+	spdlog::info("{} was banned", uid);
+}
+
+void ServerBanSystem::UnbanUID(uint64_t uid)
+{
+	auto findResult = std::find(m_vBannedUids.begin(), m_vBannedUids.end(), uid);
+	if (findResult == m_vBannedUids.end())
+		return;
+
+	m_vBannedUids.erase(findResult);
+	spdlog::info("{} was unbanned", uid);
+	// todo: this needs to erase from the banlist file
+	// atm unsure how to do this aside from just clearing and fully rewriting the file
+}
+
+bool ServerBanSystem::IsUIDAllowed(uint64_t uid)
+{
+	return std::find(m_vBannedUids.begin(), m_vBannedUids.end(), uid) == m_vBannedUids.end();
+}
+
+void ConCommand_ban(const CCommand& args)
+{
+	if (args.ArgC() < 2)
+		return;
+
+	// assuming maxplayers 32
+	for (int i = 0; i < 32; i++)
+	{
+		void* player = GetPlayerByIndex(i);
+
+		if (!strcmp((char*)player + 0x16, args.Arg(1)) || !strcmp((char*)player + 0xF500, args.Arg(1)))
+		{
+			g_ServerBanSystem->BanUID(strtoll((char*)player + 0xF500, nullptr, 10));
+			CBaseClient__Disconnect(player, 1, "Banned from server");
+			break;
+		}
+	}
+}
+
+void ConCommand_unban(const CCommand& args)
+{
+	if (args.ArgC() < 2)
+		return;
+
+	// assumedly the player being unbanned here wasn't already connected, so don't need to iterate over players or anything
+	g_ServerBanSystem->UnbanUID(strtoll(args.Arg(1), nullptr, 10));
+}
+
+void ConCommand_clearbanlist(const CCommand& args)
+{
+	g_ServerBanSystem->ClearBanlist();
+}
+
+ON_DLL_LOAD_RELIESON("engine.dll", BanSystem, ConCommand, [](HMODULE baseAddress)
+{
+	g_ServerBanSystem = new ServerBanSystem;
+	g_ServerBanSystem->OpenBanlist();
+
+	RegisterConCommand("ban", ConCommand_ban, "bans a given player by uid or name", FCVAR_GAMEDLL);
+	RegisterConCommand("unban", ConCommand_unban, "unbans a given player by uid", FCVAR_NONE);
+	RegisterConCommand("clearbanlist", ConCommand_clearbanlist, "clears all uids on the banlist", FCVAR_NONE);
+})
+\ No newline at end of file