Auto Local Admin (#11254)

code/modules/client/client procs.dm

@@ -1,3 +1,8 @@
+var/list/localhost_addresses = list(
+	"127.0.0.1" = TRUE,
+	"::1" = TRUE
+)
+
 	////////////
 	//SECURITY//
 	////////////
@@ -392,6 +397,13 @@
 /client/proc/InitClient()
 	to_chat(src, "<span class='alert'>If the title screen is black, resources are still downloading. Please be patient until the title screen appears.</span>")
 
+	var/local_connection = (config.auto_local_admin && !config.use_forumuser_api && (isnull(address) || localhost_addresses[address]))
+	// Automatic admin rights for people connecting locally.
+	// Concept stolen from /tg/ with deepest gratitude.
+	// And ported from Nebula with love.
+	if(local_connection && !admin_datums[ckey])
+		new /datum/admins("Local Host", R_ALL, ckey)
+
 	//Admin Authorisation
 	holder = admin_datums[ckey]
 	if(holder)