fix #791

irc/handlers.go

@@ -804,6 +804,25 @@ func debugHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
 	case "STOPCPUPROFILE":
 		pprof.StopCPUProfile()
 		rb.Notice(fmt.Sprintf("CPU profiling stopped"))
+
+	case "CRASHSERVER":
+		if !client.HasRoleCapabs("oper:rehash") {
+			rb.Notice(client.t("You must have rehash permissions in order to execute DEBUG CRASHSERVER"))
+			return false
+		}
+		code := unregisterConfirmationCode(server.name, server.ctime)
+		if len(msg.Params) == 1 || msg.Params[1] != code {
+			rb.Notice(fmt.Sprintf(client.t("To crash the server, issue the following command: /DEBUG CRASHSERVER %s"), code))
+			return false
+		}
+		go func() {
+			// intentional nil dereference on a new goroutine, bypassing recover-from-errors
+			var i, j *int
+			*i = *j
+		}()
+
+	default:
+		rb.Notice(client.t("Unrecognized DEBUG subcommand"))
 	}
 	return false
 }