Microsoft Windows: Event Log behavior when log file reaches its max size (Setup)

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_setup_retention.nasl 10989 2018-08-15 14:57:51Z emoss $
#
# Check value for Setup: Control Event Log behavior when the log file reaches
# its maximum size
#
# Authors:
# Emanuel Moss <[email protected]>
#
# Copyright:
# Copyright (c) 2018 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.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.109443");
  script_version("$Revision: 10989 $");
  script_tag(name:"last_modification", value:"$Date: 2018-08-15 16:57:51 +0200 (Wed, 15 Aug 2018) $");
  script_tag(name:"creation_date", value:"2018-06-26 15:32:50 +0200 (Tue, 26 Jun 2018)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");
  script_name('Microsoft Windows: Event Log behavior when log file reaches its max size (Setup)');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("smb_reg_service_pack.nasl");
  script_add_preference(name:"Value", type:"radio", value:"0;1");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy
'Setup: Control Event Log behavior when the log file reaches its maximum size'
on Windows hosts (at least Windows 7).

The setting controls Event Log behavior when the log file reaches its maximum
size.
Note: Old events may or may not be retained according to the 'Backup log
automatically when full' policy setting.");
  exit(0);
}

include("smb_nt.inc");
include("policy_functions.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  policy_logging(text:'Host is no Microsoft Windows System or it is not possible
to query the registry.');
  exit(0);
}

if(get_kb_item("SMB/WindowsVersion") < "6.1"){
  policy_logging(text:'Host is not at least a Microsoft Windows 7 system.
Older versions of Microsoft Windows are not supported any more.
Please update the system.');
  exit(0);
}

title = 'Control Event Log behavior when the log file reaches its maximum size';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/Windows Components/
Event Log Service/Setup/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows\\EventLog\\Setup';
item = 'Retention';
value = registry_get_sz(key:key, item:item, type:type);
default = script_get_preference('Value');

if(!value){
  value = '0';
}

if(int(value) == int(default)){
  compliant = 'yes';
}else{
  compliant = 'no';
}

policy_logging(text:'"' + title + '" is set to: ' + value);
policy_add_oid();
policy_set_dval(dval:default);
policy_fixtext(fixtext:fixtext);
policy_control_name(title:title);
policy_set_kb(val:value);
policy_set_compliance(compliant:compliant);

exit(0);