#!/bin/sh #| exec mzscheme -u "$0" "$@" |# (module pcap-pop3-demo mzscheme (require "../SPeaCAP.ss") (call-with-open-offline (build-path (current-directory) "pop3.pcap") (lambda (pcap) (set-filter! pcap (compile-filter pcap "tcp dst port 110")) (dispatch pcap +inf.0 (lambda (head data breakloop) (let ((payload (subbytes data 56))) (if (regexp-match "^USER|^PASS" payload) (printf "~a" (bytes->string/utf-8 payload #\?)))))))) )