actual tgui code

2020-08-17 21:07:09 +08:00
parent 610e25beb7
commit 55bd3ecc26
9 changed files with 507 additions and 50 deletions
@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) 2020 Aleksej Komarov
+ * SPDX-License-Identifier: MIT
+ */
+
+/**
+ * Maximum number of connection records allowed to analyze.
+ * Should match the value set in the browser.
+ */
+#define TGUI_TELEMETRY_MAX_CONNECTIONS 5
+
+/**
+ * Maximum time allocated for sending a telemetry packet.
+ */
+#define TGUI_TELEMETRY_RESPONSE_WINDOW 30 SECONDS
+
+/// Time of telemetry request
+/datum/tgui_panel/var/telemetry_requested_at
+/// Time of telemetry analysis completion
+/datum/tgui_panel/var/telemetry_analyzed_at
+/// List of previous client connections
+/datum/tgui_panel/var/list/telemetry_connections
+
+/**
+ * private
+ *
+ * Requests some telemetry from the client.
+ */
+/datum/tgui_panel/proc/request_telemetry()
+	telemetry_requested_at = world.time
+	telemetry_analyzed_at = null
+	window.send_message("telemetry/request", list(
+		"limits" = list(
+			"connections" = TGUI_TELEMETRY_MAX_CONNECTIONS,
+		),
+	))
+
+/**
+ * private
+ *
+ * Analyzes a telemetry packet.
+ *
+ * Is currently only useful for detecting ban evasion attempts.
+ */
+/datum/tgui_panel/proc/analyze_telemetry(payload)
+	if(world.time > telemetry_requested_at + TGUI_TELEMETRY_RESPONSE_WINDOW)
+		message_admins("[key_name(client)] sent telemetry outside of the allocated time window.")
+		return
+	if(telemetry_analyzed_at)
+		message_admins("[key_name(client)] sent telemetry more than once.")
+		return
+	telemetry_analyzed_at = world.time
+	if(!payload)
+		return
+	telemetry_connections = payload["connections"]
+	var/len = length(telemetry_connections)
+	if(len == 0)
+		return
+	if(len > TGUI_TELEMETRY_MAX_CONNECTIONS)
+		message_admins("[key_name(client)] was kicked for sending a huge telemetry payload")
+		qdel(client)
+		return
+	var/list/found
+	for(var/i in 1 to len)
+		if(QDELETED(client))
+			// He got cleaned up before we were done
+			return
+		var/list/row = telemetry_connections[i]
+		// Check for a malformed history object
+		if (!row || row.len < 3 || (!row["ckey"] || !row["address"] || !row["computer_id"]))
+			return
+		if (world.IsBanned(row["ckey"], row["address"], row["computer_id"], real_bans_only = TRUE))
+			found = row
+			break
+		CHECK_TICK
+	// This fucker has a history of playing on a banned account.
+	if(found)
+		var/msg = "[key_name(client)] has a banned account in connection history! (Matched: [found["ckey"]], [found["address"]], [found["computer_id"]])"
+		message_admins(msg)
+		log_admin_private(msg)