Nmap NSE net: http-open-proxy

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_nmap_http_open_proxy_net.nasl 5499 2017-03-06 13:06:09Z teissa $
#
# Autogenerated NSE wrapper
#
# Authors:
# NSE-Script: Arturo 'Buanzo' Busleiman
# 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 HTTP proxy is open.

The script attempts to connect to www.google.com through the proxy and checks for a valid HTTP
response code. Valid HTTP response codes are 200, 301, and 302. If the target is an open proxy, this
script causes the target to retrieve a web page from www.google.com.


SYNTAX:

proxy.url:  Url that will be requested to the proxy


proxy.pattern:  Pattern that will be searched inside the request results";

if(description)
{
    script_id(104154);
    script_version("$Revision: 5499 $");
    script_tag(name:"last_modification", value:"$Date: 2017-03-06 14:06:09 +0100 (Mon, 06 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:"0.0");
    script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");
    script_name("Nmap NSE net: http-open-proxy");


    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:"proxy.url", value:"", type:"entry");
    script_add_preference(name:"proxy.pattern", value:"", type:"entry");

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


include("nmap.inc");

# The corresponding NSE script does't belong to the 'safe' category
if (safe_checks()) exit(0);

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

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

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