From 9c9b57691498f080bdca4b70859f75f3f9e8b422 Mon Sep 17 00:00:00 2001
From: ScureX <47725553+ScureX@users.noreply.github.com>
Date: Sat, 13 Aug 2022 02:28:15 +0200
Subject: Fixed `unban` not overwriting `banlist.txt` (#228)

* fixed unban

* changed timestamp for gecko

* fixed unbanning with inline comment

uids with inline comments werent able to unban due to whitespaces
---
 NorthstarDedicatedTest/bansystem.cpp | 72 +++++++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 2 deletions(-)

diff --git a/NorthstarDedicatedTest/bansystem.cpp b/NorthstarDedicatedTest/bansystem.cpp
index 8cb56b3f..88c7d042 100644
--- a/NorthstarDedicatedTest/bansystem.cpp
+++ b/NorthstarDedicatedTest/bansystem.cpp
@@ -5,6 +5,7 @@
 #include "miscserverscript.h"
 #include <filesystem>
 #include "configurables.h"
+#include <ctime>
 
 const char* BANLIST_PATH_SUFFIX = "/banlist.txt";
 const char BANLIST_COMMENT_CHAR = '#';
@@ -78,9 +79,76 @@ void ServerBanSystem::UnbanUID(uint64_t uid)
 		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;
+
 	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)
-- 
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