QMTP Detection

# SPDX-FileCopyrightText: 2005 Michel Arboi
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.11134");
  script_version("2023-08-01T13:29:10+0000");
  script_tag(name:"last_modification", value:"2023-08-01 13:29:10 +0000 (Tue, 01 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"qod_type", value:"remote_analysis");
  script_name("QMTP Detection");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2005 Michel Arboi");
  script_family("Service detection");
  script_dependencies("find_service.nasl", "find_service2.nasl");
  script_require_ports("Services/QMTP", 209, 628);

  script_tag(name:"summary", value:"Checks for the presence of QMTP/QMQP server.");

  exit(0);
}

include("host_details.inc");
include("port_service_func.inc");
include("misc_func.inc");

ports = service_get_ports(proto:"QMTP", default_port_list:make_list(209, 628));

vt_strings = get_vt_strings();
string_lo = vt_strings["lowercase"];
string_def = vt_strings["default"];

function netstr(str)
{
  local_var l;
  l = strlen(str);
  return strcat(l, ":", str, ",");
}

foreach port (ports) {
  if (!service_is_unknown(port: port))
    continue;

  soc = open_sock_tcp(port);
  if (!soc)
    continue;

  msg = strcat(netstr(str: "
Message-ID: <1234567890.666." + string_lo + "@example.org>
From: " + string_lo + "@example.org
To: [email protected]

" + string_def + " is probing this server."),
  netstr(str: string_lo + "@example.org"),
  netstr(str: netstr(str: "[email protected]")));

  # QMQP encodes the whole message once more
  if (port == 628) {
    msg = netstr(str: msg);
    srv = "QMQP";
  }
  else
    srv = "QMTP";

  send(socket: soc, data: msg);
  r = recv(socket: soc, length: 1024);
  close(soc);

  if (ereg(pattern: "^[1-9][0-9]*:[KZD]", string: r)) {
    log_message(port:port);
    service_register(port: port, proto: srv);
  }
}

exit(0);