#!/usr/bin/env python

"""
$Id$

This file is part of the sqlmap project, http://sqlmap.sourceforge.net.

Copyright (c) 2007-2009 Bernardo Damele A. G. <bernardo.damele@gmail.com>
Copyright (c) 2006 Daniele Bellucci <daniele.bellucci@gmail.com>

sqlmap is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation version 2 of the License.

sqlmap 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 sqlmap; if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
"""



import re

from xml.sax import parse

from lib.core.common import checkFile
from lib.core.data import kb
from lib.core.data import paths
from lib.parse.handler import FingerprintHandler


def headersParser(headers):
    """
    This function calls a class that parses the input HTTP headers to
    fingerprint the back-end database management system operating system
    and the web application technology
    """

    # It is enough to parse the headers on first four HTTP responses
    if kb.headersCount > 3:
        return

    kb.headersCount += 1

    topHeaders = {
                   "cookie":                          "%s/cookie.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "microsoftsharepointteamservices": "%s/sharepoint.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "server":                          "%s/server.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "servlet-engine":                  "%s/servlet.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "set-cookie":                      "%s/cookie.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "x-aspnet-version":                "%s/x-aspnet-version.xml" % paths.SQLMAP_XML_BANNER_PATH,
                   "x-powered-by":                    "%s/x-powered-by.xml" % paths.SQLMAP_XML_BANNER_PATH,
                 }

    for header in headers:
        if header in topHeaders.keys():
            value   = headers[header]
            xmlfile = topHeaders[header]

            checkFile(xmlfile)

            handler = FingerprintHandler(value, kb.headersFp)

            parse(xmlfile, handler)
            parse(paths.GENERIC_XML, handler)