Nmap NSE net: ftp-anon

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_nmap_ftp_anon_net.nasl 5505 2017-03-07 10:00:18Z teissa $
#
# Autogenerated NSE wrapper
#
# Authors:
# NSE-Script: Eddie Bell, Rob Nicholls, Ange Gutek, David Fifield
# NASL-Wrapper: autogenerated
#
# Copyright:
# NSE-Script: The Nmap Security Scanner (http://nmap.org)
# Copyright (C) 2011 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

tag_summary = "Checks if an FTP server allows anonymous logins.

If anonymous is allowed, gets a directory listing of the root directory and highlights writeable
files.


SYNTAX:

ftp-anon.maxlist:  The maximum number of files to return in the
directory listing. By default it is 20, or unlimited if verbosity is
enabled. Use a negative number to disable the limit, or
'0' to disable the listing entirely.";

if(description)
{
    script_id(104031);
    script_version("$Revision: 5505 $");
    script_tag(name:"last_modification", value:"$Date: 2017-03-07 11:00:18 +0100 (Tue, 07 Mar 2017) $");
    script_tag(name:"creation_date", value:"2011-06-01 16:32:46 +0200 (Wed, 01 Jun 2011)");
    script_tag(name:"cvss_base", value:"5.0");
    script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
    script_name("Nmap NSE net: ftp-anon");


    script_category(ACT_INIT);
    script_tag(name:"qod_type", value:"remote_analysis");
    script_copyright("NSE-Script: The Nmap Security Scanner; NASL-Wrapper: Greenbone Networks GmbH");
    script_family("Nmap NSE net");
    script_dependencies("nmap_nse_net.nasl");
    script_mandatory_keys("Tools/Launch/nmap_nse_net");

    script_add_preference(name:"ftp-anon.maxlist", value:"", type:"entry");

    script_tag(name : "summary" , value : tag_summary);
    exit(0);
}


include("nmap.inc");


phase = 0;
if (defined_func("scan_phase")) {
    phase = scan_phase();
}

if (phase == 1) {
    # Get the preferences
    argv = make_array();

    pref = script_get_preference("ftp-anon.maxlist");
    if (!isnull(pref) && pref != "") {
        argv["ftp-anon.maxlist"] = string('"', pref, '"');
    }
    nmap_nse_register(script:"ftp-anon", args:argv);
} else if (phase == 2) {
    res = nmap_nse_get_results(script:"ftp-anon");
    foreach portspec (keys(res)) {
        output_banner = 'Result found by Nmap Security Scanner (ftp-anon.nse) http://nmap.org:\n\n';
        if (portspec == "0") {
            security_message(data:output_banner + res[portspec], port:0);
        } else {
            v = split(portspec, sep:"/", keep:0);
            proto = v[0];
            port = v[1];
            security_message(data:output_banner + res[portspec], port:port, protocol:proto);
        }
    }
}