#!/usr/bin/env python

"""
Copyright (c) 2006-2017 sqlmap developers (http://sqlmap.org/)
See the file 'LICENSE' for copying permission
"""

from lib.core.common import Backend
from lib.core.common import unArrayizeValue
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.data import queries
from lib.core.enums import DBMS
from lib.core.session import setOs
from lib.parse.banner import bannerParser
from lib.request import inject
from plugins.generic.custom import Custom
from plugins.generic.databases import Databases
from plugins.generic.entries import Entries
from plugins.generic.search import Search
from plugins.generic.users import Users

class Enumeration(Custom, Databases, Entries, Search, Users):
    """
    This class defines generic enumeration functionalities for plugins.
    """

    def __init__(self):
        kb.data.has_information_schema = False
        kb.data.banner = None
        kb.data.hostname = ""
        kb.data.processChar = None
        kb.data.characterSet = None

        Custom.__init__(self)
        Databases.__init__(self)
        Entries.__init__(self)
        Search.__init__(self)
        Users.__init__(self)

    def getBanner(self):
        if not conf.getBanner:
            return

        if kb.data.banner is None:
            infoMsg = "fetching banner"
            logger.info(infoMsg)

            if Backend.isDbms(DBMS.DB2):
                rootQuery = queries[DBMS.DB2].banner
                for query in (rootQuery.query, rootQuery.query2):
                    kb.data.banner = unArrayizeValue(inject.getValue(query, safeCharEncode=False))
                    if kb.data.banner:
                        break
            else:
                query = queries[Backend.getIdentifiedDbms()].banner.query
                kb.data.banner = unArrayizeValue(inject.getValue(query, safeCharEncode=False))

            bannerParser(kb.data.banner)

            if conf.os and conf.os == "windows":
                kb.bannerFp["type"] = set(["Windows"])

            elif conf.os and conf.os == "linux":
                kb.bannerFp["type"] = set(["Linux"])

            elif conf.os:
                kb.bannerFp["type"] = set(["%s%s" % (conf.os[0].upper(), conf.os[1:])])

            if conf.os:
                setOs()

        return kb.data.banner

    def getHostname(self):
        infoMsg = "fetching server hostname"
        logger.info(infoMsg)

        query = queries[Backend.getIdentifiedDbms()].hostname.query

        if not kb.data.hostname:
            kb.data.hostname = unArrayizeValue(inject.getValue(query, safeCharEncode=False))

        return kb.data.hostname
