From 4bf5a533b1b2e5b638b73bb68b1aa3be27ca40ba Mon Sep 17 00:00:00 2001
From: mckaygerhard <mckaygerhard@gmail.com>
Date: Tue, 20 Jun 2023 11:43:13 -0400
Subject: [PATCH] featured geoip, check if already provided

---
 README.md |  65 +++++++++++++++++++++++++++
 geoip.lua | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 init.lua  |   2 +-
 3 files changed, 194 insertions(+), 1 deletion(-)
 create mode 100644 geoip.lua

diff --git a/README.md b/README.md
index abf1c77..c5c41b7 100644
--- a/README.md
+++ b/README.md
@@ -16,3 +16,68 @@ etc etc etc
 
 CC-BY-SA-NC 4.0
 
+
+it provides geoip mod for minetest
+
+Lets you resolve geoip requests on a player
+
+powered by [IP Location Finder by KeyCDN](https://tools.keycdn.com/geo)
+
+### minetest.conf
+```
+# enable curl/http on that mod
+secure.http_mods = geoip,governing
+```
+
+### Commands
+```
+/geoip <playername>
+```
+
+### privs
+
+* `geoip` can make a geoip query
+
+# Api
+
+```lua
+-- lookup command
+governing.lookup("213.152.186.35", function(result)
+	-- see "Geoip result data"
+end)
+
+-- overrideable callback on player join
+governing.joinplayer_callback = function(playername, result)
+	-- see "Geoip result data"
+end
+```
+
+## Geoip result data
+```json
+{
+  "status": "success",
+  "description": "Data successfully received.",
+  "data": {
+    "geo": {
+      "host": "213.152.186.35",
+      "ip": "213.152.186.35",
+      "rdns": "213.152.186.35",
+      "asn": 49453,
+      "isp": "Global Layer B.V.",
+      "country_name": "Netherlands",
+      "country_code": "NL",
+      "region_name": null,
+      "region_code": null,
+      "city": null,
+      "postal_code": null,
+      "continent_name": "Europe",
+      "continent_code": "EU",
+      "latitude": 52.3824,
+      "longitude": 4.8995,
+      "metro_code": null,
+      "timezone": "Europe/Amsterdam",
+      "datetime": "2021-05-20 08:45:56"
+    }
+  }
+}
+```
diff --git a/geoip.lua b/geoip.lua
new file mode 100644
index 0000000..0bc5e24
--- /dev/null
+++ b/geoip.lua
@@ -0,0 +1,128 @@
+if not governing.geoip then
+
+	minetest.register_privilege("geoip", {
+		description = "can do geoip lookups on players for governing",
+		give_to_singleplayer = false
+	})
+end
+
+function governing.lookup(ip, callback)
+
+	local http = minetest.request_http_api()
+
+	if not http then
+		minetest.log("error", "[governing/geoip] mod not in the trusted http mods!")
+		return
+	end
+
+	http.fetch({
+		url = "https://tools.keycdn.com/geo.json?host=" .. ip,
+		extra_headers = {
+			"User-Agent: keycdn-tools:https://minetest.org"
+		},
+		timeout = 1,
+	}, function(res)
+		if res.code == 200 and callback then
+			local data = minetest.parse_json(res.data)
+			callback(data)
+		else
+			minetest.log("warning", "[governing/geoip] http request returned status: " .. res.code)
+		end
+	end)
+end
+
+local function format_result(result)
+	if result and result.status == "success" and result.data and result.data.geo then
+		local txt = "Geoip result: "
+		if result.data.geo.country_name then
+			txt = txt .. " Country: " .. result.data.geo.country_name
+		end
+		if result.data.geo.city then
+			txt = txt .. " City: " .. result.data.geo.city
+		end
+		if result.data.geo.timezone then
+			txt = txt .. " Timezone: " .. result.data.geo.timezone
+		end
+		if result.data.geo.asn then
+			txt = txt .. " ASN: " .. result.data.geo.asn
+		end
+		if result.data.geo.isp then
+			txt = txt .. " ISP: " .. result.data.geo.isp
+		end
+		if result.data.geo.ip then
+			txt = txt .. " IP: " .. result.data.geo.ip
+		end
+		return txt
+	else
+		return false
+	end
+end
+
+-- function(name, result)
+governing.joinplayer_callback = function() end
+
+-- query ip on join, record in logs and execute callback
+minetest.register_on_joinplayer(function(player)
+	if not minetest.get_player_ip then
+		return
+	end
+
+	local name = player:get_player_name()
+	local ip = minetest.get_player_ip(name)
+	if not ip then
+		return
+	end
+
+	governing.lookup(ip, function(data)
+		-- log to debug.txt
+		local txt = format_result(data)
+		if txt then
+			minetest.log("action", "[goberning/geoip] result for player " .. name .. ": " .. txt)
+		else
+			minetest.log("error", "[goberning/geoip] result for player " .. name .. ": seems fails for ip "..ip)
+		end
+
+		-- execute callback
+		governing.joinplayer_callback(name, data)
+	end)
+end)
+
+-- manual query
+minetest.register_chatcommand("geoip", {
+	params = "<playername>",
+	privs = {geoip=true},
+	description = "Does a geoip lookup on the given player for governing",
+	func = function(name, param)
+
+		if not param then
+			return true, "usage: /geoip <playername>"
+		end
+
+		minetest.log("action", "[geoip] Player " .. name .. " queries the player: " .. param)
+
+		if not minetest.get_player_ip then
+			return true, "minetest.get_player_ip no available!"
+		end
+
+		local ip = minetest.get_player_ip(param)
+
+		if not ip then
+			return true, "no ip available!"
+		end
+
+		governing.lookup(ip, function(result)
+			local txt = format_result(result)
+
+			if not txt then
+				minetest.chat_send_player(name, "Geoip error: "..name..":"..ip": " .. (result.description or "unknown error"))
+				return
+			end
+
+			minetest.log("action", "[geoip] result for player " .. param .. ": " .. txt)
+
+			minetest.chat_send_player(name, txt)
+		end)
+
+
+	end
+})
diff --git a/init.lua b/init.lua
index 04d284a..4398440 100644
--- a/init.lua
+++ b/init.lua
@@ -68,7 +68,7 @@ function governing.is_creative(name)
 	end
 end
 
---dofile(governing.modpath.."/geoip.lua")
+dofile(governing.modpath.."/geoip.lua")
 dofile(governing.modpath.."/commands.lua")
 
 print("[MOD] governing mod loaded" )