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#include "bansystem.h"
#include "serverauthentication.h"
#include "core/convar/concommand.h"
#include "server/r2server.h"
#include "engine/r2engine.h"
#include "client/r2client.h"
#include "config/profile.h"
#include <filesystem>
const char* BANLIST_PATH_SUFFIX = "/banlist.txt";
const char BANLIST_COMMENT_CHAR = '#';
ServerBanSystem* g_pBanSystem;
void ServerBanSystem::OpenBanlist()
{
std::ifstream banlistStream(GetNorthstarPrefix() + "/banlist.txt");
if (!banlistStream.fail())
{
std::string line;
while (std::getline(banlistStream, line))
{
// ignore line if first char is # or line is empty
if (line == "" || line.front() == BANLIST_COMMENT_CHAR)
continue;
// remove tabs which shouldnt be there but maybe someone did the funny
line.erase(std::remove(line.begin(), line.end(), '\t'), line.end());
// remove spaces to allow for spaces before uids
line.erase(std::remove(line.begin(), line.end(), ' '), line.end());
// check if line is empty to allow for newlines in the file
if (line == "")
continue;
// for inline comments like: 123123123 #banned for unfunny
std::string uid = line.substr(0, line.find(BANLIST_COMMENT_CHAR));
m_vBannedUids.push_back(strtoull(uid.c_str(), nullptr, 10));
}
banlistStream.close();
}
// open write stream for banlist // dont do this to allow for all time access
// m_sBanlistStream.open(GetNorthstarPrefix() + "/banlist.txt", std::ofstream::out | std::ofstream::binary | std::ofstream::app);
}
void ServerBanSystem::ReloadBanlist()
{
std::ifstream fsBanlist(GetNorthstarPrefix() + "/banlist.txt");
if (!fsBanlist.fail())
{
std::string line;
// since we wanna use this as the reload func we need to clear the list
m_vBannedUids.clear();
while (std::getline(fsBanlist, line))
m_vBannedUids.push_back(strtoull(line.c_str(), nullptr, 10));
fsBanlist.close();
}
}
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);
m_sBanlistStream.close();
}
void ServerBanSystem::BanUID(uint64_t uid)
{
// checking if last char is \n to make sure uids arent getting fucked
std::ifstream fsBanlist(GetNorthstarPrefix() + "/banlist.txt");
std::string content((std::istreambuf_iterator<char>(fsBanlist)), (std::istreambuf_iterator<char>()));
fsBanlist.close();
m_sBanlistStream.open(GetNorthstarPrefix() + "/banlist.txt", std::ofstream::out | std::ofstream::binary | std::ofstream::app);
if (content.back() != '\n')
m_sBanlistStream << std::endl;
m_vBannedUids.push_back(uid);
m_sBanlistStream << std::to_string(uid) << std::endl;
m_sBanlistStream.close();
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);
std::vector<std::string> banlistText;
std::ifstream fs_readBanlist(GetNorthstarPrefix() + "/banlist.txt");
if (!fs_readBanlist.fail())
{
std::string line;
while (std::getline(fs_readBanlist, line))
{
// support for comments and newlines added in https://github.com/R2Northstar/NorthstarLauncher/pull/227
std::string modLine = line; // copy the line into a free var that we can fuck with, line will be the original
// remove tabs which shouldnt be there but maybe someone did the funny
modLine.erase(std::remove(modLine.begin(), modLine.end(), '\t'), modLine.end());
// remove spaces to allow for spaces before uids
modLine.erase(std::remove(modLine.begin(), modLine.end(), ' '), modLine.end());
// ignore line if first char is # or empty line, just add it
if (line.front() == BANLIST_COMMENT_CHAR || modLine == "")
{
banlistText.push_back(line);
continue;
}
// for inline comments like: 123123123 #banned for unfunny
std::string lineUid = line.substr(0, line.find(BANLIST_COMMENT_CHAR));
// have to erase spaces or else inline comments will fuck up the uid finding
lineUid.erase(std::remove(lineUid.begin(), lineUid.end(), '\t'), lineUid.end());
lineUid.erase(std::remove(lineUid.begin(), lineUid.end(), ' '), lineUid.end());
// if the uid in the line is the uid we wanna unban
if (std::to_string(uid) == lineUid)
{
// comment the uid out
line.insert(0, "# ");
// add a comment with unban date
// not necessary but i feel like this makes it better
std::time_t t = std::time(0);
std::tm* now = std::localtime(&t);
std::ostringstream unbanComment;
//{y}/{m}/{d} {h}:{m}
unbanComment << " # unban date: ";
unbanComment << now->tm_year + 1900 << "-"; // this lib is so fucking awful
unbanComment << std::setw(2) << std::setfill('0') << now->tm_mon + 1 << "-";
unbanComment << std::setw(2) << std::setfill('0') << now->tm_mday << " ";
unbanComment << std::setw(2) << std::setfill('0') << now->tm_hour << ":";
unbanComment << std::setw(2) << std::setfill('0') << now->tm_min;
line.append(unbanComment.str());
}
banlistText.push_back(line);
}
fs_readBanlist.close();
}
// open write stream for banlist // without append so we clear the file
if (m_sBanlistStream.is_open())
m_sBanlistStream.close();
m_sBanlistStream.open(GetNorthstarPrefix() + "/banlist.txt", std::ofstream::out | std::ofstream::binary);
for (std::string updatedLine : banlistText)
m_sBanlistStream << updatedLine << std::endl;
m_sBanlistStream.close();
spdlog::info("{} was unbanned", uid);
}
bool ServerBanSystem::IsUIDAllowed(uint64_t uid)
{
uint64_t localPlayerUserID = strtoull(R2::g_pLocalPlayerUserID, nullptr, 10);
if (localPlayerUserID == uid)
return true;
ReloadBanlist(); // Reload to have up to date list on join
return std::find(m_vBannedUids.begin(), m_vBannedUids.end(), uid) == m_vBannedUids.end();
}
void ConCommand_ban(const CCommand& args)
{
if (args.ArgC() < 2)
return;
for (int i = 0; i < R2::g_pGlobals->m_nMaxClients; i++)
{
R2::CBaseClient* player = &R2::g_pClientArray[i];
if (!strcmp(player->m_Name, args.Arg(1)) || !strcmp(player->m_UID, args.Arg(1)))
{
g_pBanSystem->BanUID(strtoull(player->m_UID, nullptr, 10));
R2::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_pBanSystem->UnbanUID(strtoull(args.Arg(1), nullptr, 10));
}
void ConCommand_clearbanlist(const CCommand& args)
{
g_pBanSystem->ClearBanlist();
}
ON_DLL_LOAD_RELIESON("engine.dll", BanSystem, ConCommand, (CModule module))
{
g_pBanSystem = new ServerBanSystem;
g_pBanSystem->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_GAMEDLL);
RegisterConCommand("clearbanlist", ConCommand_clearbanlist, "clears all uids on the banlist", FCVAR_GAMEDLL);
}
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