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#!/usr/bin/env python3
#
# Copyright (c) 2018 by Cisco Systems, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
""" Update NVD feeds and store CVE blob locally
"""
import textwrap
import argparse
import logging
import logging.config
import cvert
def update_cvert():
"""Update CVE storage"""
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description=textwrap.dedent("""
Update NVD feeds and store CVE blob locally.
"""),
epilog=textwrap.dedent("""
examples:
# Download NVD feeds to "nvdfeed" directory.
# If there are meta files in the directory, they will be updated
# and only fresh archives will be downloaded
%% %(prog)s nvdfeed
# Inspect NVD feeds in "nvdfeed" directory
# and prepare a CVE dump python blob "cvedump".
# Use it later as input for cvert-* scripts (for speeding up)
%% %(prog)s --offline --store cvedump nvdfeed
# Download (update) NVD feeds and prepare the CVE dump
%% %(prog)s --store cvedump nvdfeed
"""))
parser.add_argument("-d", "--store", help="save CVE data structures in file",
metavar="FILENAME")
parser.add_argument("--offline", help="do not update from NVD site",
action="store_true")
parser.add_argument("--debug", help="print debug messages",
action="store_true")
parser.add_argument("feed_dir", help="feeds directory",
metavar="feed-dir")
args = parser.parse_args()
logging.config.dictConfig(cvert.logconfig(args.debug))
cve_struct = cvert.update_feeds(args.feed_dir, args.offline)
if not cve_struct and args.offline:
parser.error("No CVEs found in {0}. Try turn off offline mode.".format(args.feed_dir))
if args.store:
cvert.save_cve(args.store, cve_struct)
if __name__ == "__main__":
update_cvert()
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