option.py

#!/usr/bin/env python

"""
Copyright (c) 2006-2016 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""

import cookielib
import glob
import inspect
import logging
import httplib
import os
import random
import re
import socket
import string
import sys
import tempfile
import threading
import time
import urllib2
import urlparse

import lib.controller.checks
import lib.core.common
import lib.core.threads
import lib.core.convert
import lib.request.connect
import lib.utils.search

from lib.controller.checks import checkConnection
from lib.core.common import Backend
from lib.core.common import boldifyMessage
from lib.core.common import checkFile
from lib.core.common import dataToStdout
from lib.core.common import getPublicTypeMembers
from lib.core.common import getSafeExString
from lib.core.common import extractRegexResult
from lib.core.common import filterStringValue
from lib.core.common import findPageForms
from lib.core.common import getConsoleWidth
from lib.core.common import getFileItems
from lib.core.common import getFileType
from lib.core.common import getUnicode
from lib.core.common import isListLike
from lib.core.common import normalizePath
from lib.core.common import ntToPosixSlashes
from lib.core.common import openFile
from lib.core.common import parseTargetDirect
from lib.core.common import parseTargetUrl
from lib.core.common import paths
from lib.core.common import randomStr
from lib.core.common import readCachedFileContent
from lib.core.common import readInput
from lib.core.common import resetCookieJar
from lib.core.common import runningAsAdmin
from lib.core.common import safeExpandUser
from lib.core.common import setOptimize
from lib.core.common import setPaths
from lib.core.common import singleTimeWarnMessage
from lib.core.common import UnicodeRawConfigParser
from lib.core.common import urldecode
from lib.core.convert import base64unpickle
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.data import mergedOptions
from lib.core.data import queries
from lib.core.datatype import AttribDict
from lib.core.datatype import InjectionDict
from lib.core.defaults import defaults
from lib.core.dicts import DBMS_DICT
from lib.core.dicts import DUMP_REPLACEMENTS
from lib.core.enums import ADJUST_TIME_DELAY
from lib.core.enums import AUTH_TYPE
from lib.core.enums import CUSTOM_LOGGING
from lib.core.enums import DUMP_FORMAT
from lib.core.enums import HTTP_HEADER
from lib.core.enums import HTTPMETHOD
from lib.core.enums import MOBILES
from lib.core.enums import OPTION_TYPE
from lib.core.enums import PAYLOAD
from lib.core.enums import PRIORITY
from lib.core.enums import PROXY_TYPE
from lib.core.enums import REFLECTIVE_COUNTER
from lib.core.enums import WIZARD
from lib.core.exception import SqlmapConnectionException
from lib.core.exception import SqlmapFilePathException
from lib.core.exception import SqlmapGenericException
from lib.core.exception import SqlmapInstallationException
from lib.core.exception import SqlmapMissingDependence
from lib.core.exception import SqlmapMissingMandatoryOptionException
from lib.core.exception import SqlmapMissingPrivileges
from lib.core.exception import SqlmapNoneDataException
from lib.core.exception import SqlmapSilentQuitException
from lib.core.exception import SqlmapSyntaxException
from lib.core.exception import SqlmapSystemException
from lib.core.exception import SqlmapUnsupportedDBMSException
from lib.core.exception import SqlmapUserQuitException
from lib.core.log import FORMATTER
from lib.core.optiondict import optDict
from lib.core.settings import BURP_REQUEST_REGEX
from lib.core.settings import BURP_XML_HISTORY_REGEX
from lib.core.settings import CODECS_LIST_PAGE
from lib.core.settings import CRAWL_EXCLUDE_EXTENSIONS
from lib.core.settings import CUSTOM_INJECTION_MARK_CHAR
from lib.core.settings import DBMS_ALIASES
from lib.core.settings import DEFAULT_PAGE_ENCODING
from lib.core.settings import DEFAULT_TOR_HTTP_PORTS
from lib.core.settings import DEFAULT_TOR_SOCKS_PORT
from lib.core.settings import DUMMY_URL
from lib.core.settings import IGNORE_SAVE_OPTIONS
from lib.core.settings import INJECT_HERE_MARK
from lib.core.settings import IS_WIN
from lib.core.settings import KB_CHARS_BOUNDARY_CHAR
from lib.core.settings import KB_CHARS_LOW_FREQUENCY_ALPHABET
from lib.core.settings import LOCALHOST
from lib.core.settings import MAX_CONNECT_RETRIES
from lib.core.settings import MAX_NUMBER_OF_THREADS
from lib.core.settings import NULL
from lib.core.settings import PARAMETER_SPLITTING_REGEX
from lib.core.settings import PROBLEMATIC_CUSTOM_INJECTION_PATTERNS
from lib.core.settings import SITE
from lib.core.settings import SOCKET_PRE_CONNECT_QUEUE_SIZE
from lib.core.settings import SQLMAP_ENVIRONMENT_PREFIX
from lib.core.settings import SUPPORTED_DBMS
from lib.core.settings import SUPPORTED_OS
from lib.core.settings import TIME_DELAY_CANDIDATES
from lib.core.settings import UNION_CHAR_REGEX
from lib.core.settings import UNKNOWN_DBMS_VERSION
from lib.core.settings import URI_INJECTABLE_REGEX
from lib.core.settings import VERSION_STRING
from lib.core.settings import WEBSCARAB_SPLITTER
from lib.core.threads import getCurrentThreadData
from lib.core.update import update
from lib.parse.configfile import configFileParser
from lib.parse.payloads import loadBoundaries
from lib.parse.payloads import loadPayloads
from lib.parse.sitemap import parseSitemap
from lib.request.basic import checkCharEncoding
from lib.request.connect import Connect as Request
from lib.request.dns import DNSServer
from lib.request.basicauthhandler import SmartHTTPBasicAuthHandler
from lib.request.httpshandler import HTTPSHandler
from lib.request.pkihandler import HTTPSPKIAuthHandler
from lib.request.rangehandler import HTTPRangeHandler
from lib.request.redirecthandler import SmartRedirectHandler
from lib.request.templates import getPageTemplate
from lib.utils.crawler import crawl
from lib.utils.deps import checkDependencies
from lib.utils.search import search
from lib.utils.purge import purge
from thirdparty.keepalive import keepalive
from thirdparty.oset.pyoset import oset
from thirdparty.socks import socks
from xml.etree.ElementTree import ElementTree

authHandler = urllib2.BaseHandler()
httpsHandler = HTTPSHandler()
keepAliveHandler = keepalive.HTTPHandler()
proxyHandler = urllib2.ProxyHandler()
redirectHandler = SmartRedirectHandler()
rangeHandler = HTTPRangeHandler()

def _feedTargetsDict(reqFile, addedTargetUrls):
    """
    Parses web scarab and burp logs and adds results to the target URL list
    """

    def _parseWebScarabLog(content):
        """
        Parses web scarab logs (POST method not supported)
        """

        reqResList = content.split(WEBSCARAB_SPLITTER)

        for request in reqResList:
            url = extractRegexResult(r"URL: (?P<result>.+?)\n", request, re.I)
            method = extractRegexResult(r"METHOD: (?P<result>.+?)\n", request, re.I)
            cookie = extractRegexResult(r"COOKIE: (?P<result>.+?)\n", request, re.I)

            if not method or not url:
                logger.debug("not a valid WebScarab log data")
                continue

            if method.upper() == HTTPMETHOD.POST:
                warnMsg = "POST requests from WebScarab logs aren't supported "
                warnMsg += "as their body content is stored in separate files. "
                warnMsg += "Nevertheless you can use -r to load them individually."
                logger.warning(warnMsg)
                continue

            if not(conf.scope and not re.search(conf.scope, url, re.I)):
                if not kb.targets or url not in addedTargetUrls:
                    kb.targets.add((url, method, None, cookie, None))
                    addedTargetUrls.add(url)

    def _parseBurpLog(content):
        """
        Parses burp logs
        """

        if not re.search(BURP_REQUEST_REGEX, content, re.I | re.S):
            if re.search(BURP_XML_HISTORY_REGEX, content, re.I | re.S):
                reqResList = []
                for match in re.finditer(BURP_XML_HISTORY_REGEX, content, re.I | re.S):
                    port, request = match.groups()
                    request = request.decode("base64")
                    _ = re.search(r"%s:.+" % re.escape(HTTP_HEADER.HOST), request)
                    if _:
                        host = _.group(0).strip()
                        if not re.search(r":\d+\Z", host):
                            request = request.replace(host, "%s:%d" % (host, int(port)))
                    reqResList.append(request)
            else:
                reqResList = [content]
        else:
            reqResList = re.finditer(BURP_REQUEST_REGEX, content, re.I | re.S)

        for match in reqResList:
            request = match if isinstance(match, basestring) else match.group(0)
            request = re.sub(r"\A[^\w]+", "", request)

            schemePort = re.search(r"(http[\w]*)\:\/\/.*?\:([\d]+).+?={10,}", request, re.I | re.S)

            if schemePort:
                scheme = schemePort.group(1)
                port = schemePort.group(2)
            else:
                scheme, port = None, None

            if not re.search(r"^[\n]*(%s).*?\sHTTP\/" % "|".join(getPublicTypeMembers(HTTPMETHOD, True)), request, re.I | re.M):
                continue

            if re.search(r"^[\n]*%s.*?\.(%s)\sHTTP\/" % (HTTPMETHOD.GET, "|".join(CRAWL_EXCLUDE_EXTENSIONS)), request, re.I | re.M):
                continue

            getPostReq = False
            url = None
            host = None
            method = None
            data = None
            cookie = None
            params = False
            newline = None
            lines = request.split('\n')
            headers = []

            for index in xrange(len(lines)):
                line = lines[index]

                if not line.strip() and index == len(lines) - 1:
                    break

                newline = "\r\n" if line.endswith('\r') else '\n'
                line = line.strip('\r')
                match = re.search(r"\A(%s) (.+) HTTP/[\d.]+\Z" % "|".join(getPublicTypeMembers(HTTPMETHOD, True)), line) if not method else None

                if len(line.strip()) == 0 and method and method != HTTPMETHOD.GET and data is None:
                    data = ""
                    params = True

                elif match:
                    method = match.group(1)
                    url = match.group(2)

                    if any(_ in line for _ in ('?', '=', CUSTOM_INJECTION_MARK_CHAR)):
                        params = True

                    getPostReq = True

                # POST parameters
                elif data is not None and params:
                    data += "%s%s" % (line, newline)

                # GET parameters
                elif "?" in line and "=" in line and ": " not in line:
                    params = True

                # Headers
                elif re.search(r"\A\S+:", line):
                    key, value = line.split(":", 1)
                    value = value.strip().replace("\r", "").replace("\n", "")

                    # Cookie and Host headers
                    if key.upper() == HTTP_HEADER.COOKIE.upper():
                        cookie = value
                    elif key.upper() == HTTP_HEADER.HOST.upper():
                        if '://' in value:
                            scheme, value = value.split('://')[:2]
                        splitValue = value.split(":")
                        host = splitValue[0]

                        if len(splitValue) > 1:
                            port = filterStringValue(splitValue[1], "[0-9]")

                    # Avoid to add a static content length header to
                    # headers and consider the following lines as
                    # POSTed data
                    if key.upper() == HTTP_HEADER.CONTENT_LENGTH.upper():
                        params = True

                    # Avoid proxy and connection type related headers
                    elif key not in (HTTP_HEADER.PROXY_CONNECTION, HTTP_HEADER.CONNECTION):
                        headers.append((getUnicode(key), getUnicode(value)))

                    if CUSTOM_INJECTION_MARK_CHAR in re.sub(PROBLEMATIC_CUSTOM_INJECTION_PATTERNS, "", value or ""):
                        params = True

            data = data.rstrip("\r\n") if data else data

            if getPostReq and (params or cookie):
                if not port and isinstance(scheme, basestring) and scheme.lower() == "https":
                    port = "443"
                elif not scheme and port == "443":
                    scheme = "https"

                if conf.forceSSL:
                    scheme = "https"
                    port = port or "443"

                if not host:
                    errMsg = "invalid format of a request file"
                    raise SqlmapSyntaxException, errMsg

                if not url.startswith("http"):
                    url = "%s://%s:%s%s" % (scheme or "http", host, port or "80", url)
                    scheme = None
                    port = None

                if not(conf.scope and not re.search(conf.scope, url, re.I)):
                    if not kb.targets or url not in addedTargetUrls:
                        kb.targets.add((url, conf.method or method, data, cookie, tuple(headers)))
                        addedTargetUrls.add(url)

    checkFile(reqFile)
    try:
        with openFile(reqFile, "rb") as f:
            content = f.read()
    except (IOError, OSError, MemoryError), ex:
        errMsg = "something went wrong while trying "
        errMsg += "to read the content of file '%s' ('%s')" % (reqFile, getSafeExString(ex))
        raise SqlmapSystemException(errMsg)

    if conf.scope:
        logger.info("using regular expression '%s' for filtering targets" % conf.scope)

    _parseBurpLog(content)
    _parseWebScarabLog(content)

    if not addedTargetUrls:
        errMsg = "unable to find usable request(s) "
        errMsg += "in provided file ('%s')" % reqFile
        raise SqlmapGenericException(errMsg)

def _loadQueries():
    """
    Loads queries from 'xml/queries.xml' file.
    """

    def iterate(node, retVal=None):
        class DictObject(object):
            def __init__(self):
                self.__dict__ = {}

            def __contains__(self, name):
                return name in self.__dict__

        if retVal is None:
            retVal = DictObject()

        for child in node.findall("*"):
            instance = DictObject()
            retVal.__dict__[child.tag] = instance
            if child.attrib:
                instance.__dict__.update(child.attrib)
            else:
                iterate(child, instance)

        return retVal

    tree = ElementTree()
    try:
        tree.parse(paths.QUERIES_XML)
    except Exception, ex:
        errMsg = "something seems to be wrong with "
        errMsg += "the file '%s' ('%s'). Please make " % (paths.QUERIES_XML, getSafeExString(ex))
        errMsg += "sure that you haven't made any changes to it"
        raise SqlmapInstallationException, errMsg

    for node in tree.findall("*"):
        queries[node.attrib['value']] = iterate(node)

def _setMultipleTargets():
    """
    Define a configuration parameter if we are running in multiple target
    mode.
    """

    initialTargetsCount = len(kb.targets)
    addedTargetUrls = set()

    if not conf.logFile:
        return

    debugMsg = "parsing targets list from '%s'" % conf.logFile
    logger.debug(debugMsg)

    if not os.path.exists(conf.logFile):
        errMsg = "the specified list of targets does not exist"
        raise SqlmapFilePathException(errMsg)

    if os.path.isfile(conf.logFile):
        _feedTargetsDict(conf.logFile, addedTargetUrls)

    elif os.path.isdir(conf.logFile):
        files = os.listdir(conf.logFile)
        files.sort()

        for reqFile in files:
            if not re.search("([\d]+)\-request", reqFile):
                continue

            _feedTargetsDict(os.path.join(conf.logFile, reqFile), addedTargetUrls)

    else:
        errMsg = "the specified list of targets is not a file "
        errMsg += "nor a directory"
        raise SqlmapFilePathException(errMsg)

    updatedTargetsCount = len(kb.targets)

    if updatedTargetsCount > initialTargetsCount:
        infoMsg = "sqlmap parsed %d " % (updatedTargetsCount - initialTargetsCount)
        infoMsg += "(parameter unique) requests from the "
        infoMsg += "targets list ready to be tested"
        logger.info(infoMsg)

def _adjustLoggingFormatter():
    """
    Solves problem of line deletition caused by overlapping logging messages
    and retrieved data info in inference mode
    """

    if hasattr(FORMATTER, '_format'):
        return

    def format(record):
        message = FORMATTER._format(record)
        message = boldifyMessage(message)
        if kb.get("prependFlag"):
            message = "\n%s" % message
            kb.prependFlag = False
        return message

    FORMATTER._format = FORMATTER.format
    FORMATTER.format = format

def _setRequestFromFile():
    """
    This function checks if the way to make a HTTP request is through supplied
    textual file, parses it and saves the information into the knowledge base.
    """

    if not conf.requestFile:
        return

    addedTargetUrls = set()

    conf.requestFile = safeExpandUser(conf.requestFile)

    infoMsg = "parsing HTTP request from '%s'" % conf.requestFile
    logger.info(infoMsg)

    if not os.path.isfile(conf.requestFile):
        errMsg = "the specified HTTP request file "
        errMsg += "does not exist"
        raise SqlmapFilePathException(errMsg)

    _feedTargetsDict(conf.requestFile, addedTargetUrls)

def _setCrawler():
    if not conf.crawlDepth:
        return

    if not any((conf.bulkFile, conf.sitemapUrl)):
        crawl(conf.url)
    else:
        if conf.bulkFile:
            targets = getFileItems(conf.bulkFile)
        else:
            targets = parseSitemap(conf.sitemapUrl)
        for i in xrange(len(targets)):
            try:
                target = targets[i]
                crawl(target)

                if conf.verbose in (1, 2):
                    status = "%d/%d links visited (%d%%)" % (i + 1, len(targets), round(100.0 * (i + 1) / len(targets)))
                    dataToStdout("\r[%s] [INFO] %s" % (time.strftime("%X"), status), True)
            except Exception, ex:
                errMsg = "problem occurred while crawling at '%s' ('%s')" % (target, getSafeExString(ex))
                logger.error(errMsg)

def _doSearch():
    """
    This function performs search dorking, parses results
    and saves the testable hosts into the knowledge base.
    """

    if not conf.googleDork:
        return

    kb.data.onlyGETs = None

    def retrieve():
        links = search(conf.googleDork)

        if not links:
            errMsg = "unable to find results for your "
            errMsg += "search dork expression"
            raise SqlmapGenericException(errMsg)

        for link in links:
            link = urldecode(link)
            if re.search(r"(.*?)\?(.+)", link):
                kb.targets.add((link, conf.method, conf.data, conf.cookie, None))
            elif re.search(URI_INJECTABLE_REGEX, link, re.I):
                if kb.data.onlyGETs is None and conf.data is None and not conf.googleDork:
                    message = "do you want to scan only results containing GET parameters? [Y/n] "
                    test = readInput(message, default="Y")
                    kb.data.onlyGETs = test.lower() != 'n'
                if not kb.data.onlyGETs or conf.googleDork:
                    kb.targets.add((link, conf.method, conf.data, conf.cookie, None))

        return links

    while True:
        links = retrieve()

        if kb.targets:
            infoMsg = "sqlmap got %d results for your " % len(links)
            infoMsg += "search dork expression, "

            if len(links) == len(kb.targets):
                infoMsg += "all "
            else:
                infoMsg += "%d " % len(kb.targets)

            infoMsg += "of them are testable targets"
            logger.info(infoMsg)
            break

        else:
            message = "sqlmap got %d results " % len(links)
            message += "for your search dork expression, but none of them "
            message += "have GET parameters to test for SQL injection. "
            message += "Do you want to skip to the next result page? [Y/n]"
            test = readInput(message, default="Y")

            if test[0] in ("n", "N"):
                raise SqlmapSilentQuitException
            else:
                conf.googlePage += 1

def _setBulkMultipleTargets():
    if not conf.bulkFile:
        return

    conf.bulkFile = safeExpandUser(conf.bulkFile)

    infoMsg = "parsing multiple targets list from '%s'" % conf.bulkFile
    logger.info(infoMsg)

    if not os.path.isfile(conf.bulkFile):
        errMsg = "the specified bulk file "
        errMsg += "does not exist"
        raise SqlmapFilePathException(errMsg)

    found = False
    for line in getFileItems(conf.bulkFile):
        if re.match(r"[^ ]+\?(.+)", line, re.I) or CUSTOM_INJECTION_MARK_CHAR in line:
            found = True
            kb.targets.add((line.strip(), conf.method, conf.data, conf.cookie, None))

    if not found and not conf.forms and not conf.crawlDepth:
        warnMsg = "no usable links found (with GET parameters)"
        logger.warn(warnMsg)

def _setSitemapTargets():
    if not conf.sitemapUrl:
        return

    infoMsg = "parsing sitemap '%s'" % conf.sitemapUrl
    logger.info(infoMsg)

    found = False
    for item in parseSitemap(conf.sitemapUrl):
        if re.match(r"[^ ]+\?(.+)", item, re.I):
            found = True
            kb.targets.add((item.strip(), None, None, None, None))

    if not found and not conf.forms and not conf.crawlDepth:
        warnMsg = "no usable links found (with GET parameters)"
        logger.warn(warnMsg)

def _findPageForms():
    if not conf.forms or conf.crawlDepth:
        return

    if conf.url and not checkConnection():
        return

    infoMsg = "searching for forms"
    logger.info(infoMsg)

    if not any((conf.bulkFile, conf.googleDork, conf.sitemapUrl)):
        page, _ = Request.queryPage(content=True)
        findPageForms(page, conf.url, True, True)
    else:
        if conf.bulkFile:
            targets = getFileItems(conf.bulkFile)
        elif conf.sitemapUrl:
            targets = parseSitemap(conf.sitemapUrl)
        elif conf.googleDork:
            targets = [_[0] for _ in kb.targets]
            kb.targets.clear()
        for i in xrange(len(targets)):
            try:
                target = targets[i]
                page, _, _ = Request.getPage(url=target.strip(), crawling=True, raise404=False)
                findPageForms(page, target, False, True)

                if conf.verbose in (1, 2):
                    status = '%d/%d links visited (%d%%)' % (i + 1, len(targets), round(100.0 * (i + 1) / len(targets)))
                    dataToStdout("\r[%s] [INFO] %s" % (time.strftime("%X"), status), True)
            except KeyboardInterrupt:
                break
            except Exception, ex:
                errMsg = "problem occurred while searching for forms at '%s' ('%s')" % (target, getSafeExString(ex))
                logger.error(errMsg)

def _setDBMSAuthentication():
    """
    Check and set the DBMS authentication credentials to run statements as
    another user, not the session user
    """

    if not conf.dbmsCred:
        return

    debugMsg = "setting the DBMS authentication credentials"
    logger.debug(debugMsg)

    match = re.search("^(.+?):(.*?)$", conf.dbmsCred)

    if not match:
        errMsg = "DBMS authentication credentials value must be in format "
        errMsg += "username:password"
        raise SqlmapSyntaxException(errMsg)

    conf.dbmsUsername = match.group(1)
    conf.dbmsPassword = match.group(2)

def _setMetasploit():
    if not conf.osPwn and not conf.osSmb and not conf.osBof:
        return

    debugMsg = "setting the takeover out-of-band functionality"
    logger.debug(debugMsg)

    msfEnvPathExists = False

    if IS_WIN:
        try:
            import win32file
        except ImportError:
            errMsg = "sqlmap requires third-party module 'pywin32' "
            errMsg += "in order to use Metasploit functionalities on "
            errMsg += "Windows. You can download it from "
            errMsg += "'http://sourceforge.net/projects/pywin32/files/pywin32/'"
            raise SqlmapMissingDependence(errMsg)

        if not conf.msfPath:
            def _(key, value):
                retVal = None

                try:
                    from  _winreg import ConnectRegistry, OpenKey, QueryValueEx, HKEY_LOCAL_MACHINE
                    _ = ConnectRegistry(None, HKEY_LOCAL_MACHINE)
                    _ = OpenKey(_, key)
                    retVal = QueryValueEx(_, value)[0]
                except:
                    logger.debug("unable to identify Metasploit installation path via registry key")

                return retVal

            conf.msfPath = _(r"SOFTWARE\Rapid7\Metasploit", "Location")
            if conf.msfPath:
                conf.msfPath = os.path.join(conf.msfPath, "msf3")

    if conf.osSmb:
        isAdmin = runningAsAdmin()

        if not isAdmin:
            errMsg = "you need to run sqlmap as an administrator "
            errMsg += "if you want to perform a SMB relay attack because "
            errMsg += "it will need to listen on a user-specified SMB "
            errMsg += "TCP port for incoming connection attempts"
            raise SqlmapMissingPrivileges(errMsg)

    if conf.msfPath:
        for path in (conf.msfPath, os.path.join(conf.msfPath, "bin")):
            if any(os.path.exists(normalizePath(os.path.join(path, _))) for _ in ("msfcli", "msfconsole")):
                msfEnvPathExists = True
                if all(os.path.exists(normalizePath(os.path.join(path, _))) for _ in ("msfvenom",)):
                    kb.oldMsf = False
                elif all(os.path.exists(normalizePath(os.path.join(path, _))) for _ in ("msfencode", "msfpayload")):
                    kb.oldMsf = True
                else:
                    msfEnvPathExists = False

                conf.msfPath = path
                break

        if msfEnvPathExists:
            debugMsg = "provided Metasploit Framework path "
            debugMsg += "'%s' is valid" % conf.msfPath
            logger.debug(debugMsg)
        else:
            warnMsg = "the provided Metasploit Framework path "
            warnMsg += "'%s' is not valid. The cause could " % conf.msfPath
            warnMsg += "be that the path does not exists or that one "
            warnMsg += "or more of the needed Metasploit executables "
            warnMsg += "within msfcli, msfconsole, msfencode and "
            warnMsg += "msfpayload do not exist"
            logger.warn(warnMsg)
    else:
        warnMsg = "you did not provide the local path where Metasploit "
        warnMsg += "Framework is installed"
        logger.warn(warnMsg)

    if not msfEnvPathExists:
        warnMsg = "sqlmap is going to look for Metasploit Framework "
        warnMsg += "installation inside the environment path(s)"
        logger.warn(warnMsg)

        envPaths = os.environ.get("PATH", "").split(";" if IS_WIN else ":")

        for envPath in envPaths:
            envPath = envPath.replace(";", "")

            if any(os.path.exists(normalizePath(os.path.join(envPath, _))) for _ in ("msfcli", "msfconsole")):
                msfEnvPathExists = True
                if all(os.path.exists(normalizePath(os.path.join(envPath, _))) for _ in ("msfvenom",)):
                    kb.oldMsf = False
                elif all(os.path.exists(normalizePath(os.path.join(envPath, _))) for _ in ("msfencode", "msfpayload")):
                    kb.oldMsf = True
                else:
                    msfEnvPathExists = False

                if msfEnvPathExists:
                    infoMsg = "Metasploit Framework has been found "
                    infoMsg += "installed in the '%s' path" % envPath
                    logger.info(infoMsg)

                    conf.msfPath = envPath

                    break

    if not msfEnvPathExists:
        errMsg = "unable to locate Metasploit Framework installation. "
        errMsg += "You can get it at 'http://www.metasploit.com/download/'"
        raise SqlmapFilePathException(errMsg)

def _setWriteFile():
    if not conf.wFile:
        return

    debugMsg = "setting the write file functionality"
    logger.debug(debugMsg)

    if not os.path.exists(conf.wFile):
        errMsg = "the provided local file '%s' does not exist" % conf.wFile
        raise SqlmapFilePathException(errMsg)

    if not conf.dFile:
        errMsg = "you did not provide the back-end DBMS absolute path "
        errMsg += "where you want to write the local file '%s'" % conf.wFile
        raise SqlmapMissingMandatoryOptionException(errMsg)

    conf.wFileType = getFileType(conf.wFile)

def _setOS():
    """
    Force the back-end DBMS operating system option.
    """

    if not conf.os:
        return

    if conf.os.lower() not in SUPPORTED_OS:
        errMsg = "you provided an unsupported back-end DBMS operating "
        errMsg += "system. The supported DBMS operating systems for OS "
        errMsg += "and file system access are %s. " % ', '.join([o.capitalize() for o in SUPPORTED_OS])
        errMsg += "If you do not know the back-end DBMS underlying OS, "
        errMsg += "do not provide it and sqlmap will fingerprint it for "
        errMsg += "you."
        raise SqlmapUnsupportedDBMSException(errMsg)

    debugMsg = "forcing back-end DBMS operating system to user defined "
    debugMsg += "value '%s'" % conf.os
    logger.debug(debugMsg)

    Backend.setOs(conf.os)

def _setTechnique():
    validTechniques = sorted(getPublicTypeMembers(PAYLOAD.TECHNIQUE), key=lambda x: x[1])
    validLetters = [_[0][0].upper() for _ in validTechniques]

    if conf.tech and isinstance(conf.tech, basestring):
        _ = []

        for letter in conf.tech.upper():
            if letter not in validLetters:
                errMsg = "value for --technique must be a string composed "
                errMsg += "by the letters %s. Refer to the " % ", ".join(validLetters)
                errMsg += "user's manual for details"
                raise SqlmapSyntaxException(errMsg)

            for validTech, validInt in validTechniques:
                if letter == validTech[0]:
                    _.append(validInt)
                    break

        conf.tech = _

def _setDBMS():
    """
    Force the back-end DBMS option.
    """

    if not conf.dbms:
        return

    debugMsg = "forcing back-end DBMS to user defined value"
    logger.debug(debugMsg)

    conf.dbms = conf.dbms.lower()
    regex = re.search("%s ([\d\.]+)" % ("(%s)" % "|".join([alias for alias in SUPPORTED_DBMS])), conf.dbms, re.I)

    if regex:
        conf.dbms = regex.group(1)
        Backend.setVersion(regex.group(2))

    if conf.dbms not in SUPPORTED_DBMS:
        errMsg = "you provided an unsupported back-end database management "
        errMsg += "system. Supported DBMSes are as follows: %s. " % ', '.join(sorted(_ for _ in DBMS_DICT))
        errMsg += "If you do not know the back-end DBMS, do not provide "
        errMsg += "it and sqlmap will fingerprint it for you."
        raise SqlmapUnsupportedDBMSException(errMsg)

    for dbms, aliases in DBMS_ALIASES:
        if conf.dbms in aliases:
            conf.dbms = dbms

            break

def _setTamperingFunctions():
    """
    Loads tampering functions from given script(s)
    """

    if conf.tamper:
        last_priority = PRIORITY.HIGHEST
        check_priority = True
        resolve_priorities = False
        priorities = []

        for tfile in re.split(PARAMETER_SPLITTING_REGEX, conf.tamper):
            found = False

            tfile = tfile.strip()

            if not tfile:
                continue

            elif os.path.exists(os.path.join(paths.SQLMAP_TAMPER_PATH, tfile if tfile.endswith('.py') else "%s.py" % tfile)):
                tfile = os.path.join(paths.SQLMAP_TAMPER_PATH, tfile if tfile.endswith('.py') else "%s.py" % tfile)

            elif not os.path.exists(tfile):
                errMsg = "tamper script '%s' does not exist" % tfile
                raise SqlmapFilePathException(errMsg)

            elif not tfile.endswith('.py'):
                errMsg = "tamper script '%s' should have an extension '.py'" % tfile
                raise SqlmapSyntaxException(errMsg)

            dirname, filename = os.path.split(tfile)
            dirname = os.path.abspath(dirname)

            infoMsg = "loading tamper script '%s'" % filename[:-3]
            logger.info(infoMsg)

            if not os.path.exists(os.path.join(dirname, '__init__.py')):
                errMsg = "make sure that there is an empty file '__init__.py' "
                errMsg += "inside of tamper scripts directory '%s'" % dirname
                raise SqlmapGenericException(errMsg)

            if dirname not in sys.path:
                sys.path.insert(0, dirname)

            try:
                module = __import__(filename[:-3].encode(sys.getfilesystemencoding()))
            except (ImportError, SyntaxError), msg:
                raise SqlmapSyntaxException("cannot import tamper script '%s' (%s)" % (filename[:-3], msg))

            priority = PRIORITY.NORMAL if not hasattr(module, '__priority__') else module.__priority__

            for name, function in inspect.getmembers(module, inspect.isfunction):
                if name == "tamper" and inspect.getargspec(function).args and inspect.getargspec(function).keywords == "kwargs":
                    found = True
                    kb.tamperFunctions.append(function)
                    function.func_name = module.__name__

                    if check_priority and priority > last_priority:
                        message = "it seems that you might have mixed "
                        message += "the order of tamper scripts. "
                        message += "Do you want to auto resolve this? [Y/n/q] "
                        test = readInput(message, default="Y")

                        if not test or test[0] in ("y", "Y"):
                            resolve_priorities = True
                        elif test[0] in ("n", "N"):
                            resolve_priorities = False
                        elif test[0] in ("q", "Q"):
                            raise SqlmapUserQuitException

                        check_priority = False

                    priorities.append((priority, function))
                    last_priority = priority

                    break
                elif name == "dependencies":
                    function()

            if not found:
                errMsg = "missing function 'tamper(payload, **kwargs)' "
                errMsg += "in tamper script '%s'" % tfile
                raise SqlmapGenericException(errMsg)

        if kb.tamperFunctions and len(kb.tamperFunctions) > 3:
            warnMsg = "using too many tamper scripts is usually not "
            warnMsg += "a good idea"
            logger.warning(warnMsg)

        if resolve_priorities and priorities:
            priorities.sort(reverse=True)
            kb.tamperFunctions = []

            for _, function in priorities:
                kb.tamperFunctions.append(function)

def _setWafFunctions():
    """
    Loads WAF/IDS/IPS detecting functions from script(s)
    """

    if conf.identifyWaf:
        for found in glob.glob(os.path.join(paths.SQLMAP_WAF_PATH, "*.py")):
            dirname, filename = os.path.split(found)
            dirname = os.path.abspath(dirname)

            if filename == "__init__.py":
                continue

            debugMsg = "loading WAF script '%s'" % filename[:-3]
            logger.debug(debugMsg)

            if dirname not in sys.path:
                sys.path.insert(0, dirname)

            try:
                if filename[:-3] in sys.modules:
                    del sys.modules[filename[:-3]]
                module = __import__(filename[:-3])
            except ImportError, msg:
                raise SqlmapSyntaxException("cannot import WAF script '%s' (%s)" % (filename[:-3], msg))

            _ = dict(inspect.getmembers(module))
            if "detect" not in _:
                errMsg = "missing function 'detect(get_page)' "
                errMsg += "in WAF script '%s'" % found
                raise SqlmapGenericException(errMsg)
            else:
                kb.wafFunctions.append((_["detect"], _.get("__product__", filename[:-3])))

def _setThreads():
    if not isinstance(conf.threads, int) or conf.threads <= 0:
        conf.threads = 1

def _setDNSCache():
    """
    Makes a cached version of socket._getaddrinfo to avoid subsequent DNS requests.
    """

    def _getaddrinfo(*args, **kwargs):
        if args in kb.cache:
            return kb.cache[args]

        else:
            kb.cache[args] = socket._getaddrinfo(*args, **kwargs)
            return kb.cache[args]

    if not hasattr(socket, "_getaddrinfo"):
        socket._getaddrinfo = socket.getaddrinfo
        socket.getaddrinfo = _getaddrinfo

def _setSocketPreConnect():
    """
    Makes a pre-connect version of socket.connect
    """

    if conf.disablePrecon:
        return

    def _():
        while kb.threadContinue and not conf.disablePrecon:
            try:
                for key in socket._ready:
                    if len(socket._ready[key]) < SOCKET_PRE_CONNECT_QUEUE_SIZE:
                        family, type, proto, address = key
                        s = socket.socket(family, type, proto)
                        s._connect(address)
                        with kb.locks.socket:
                            socket._ready[key].append(s._sock)
            except KeyboardInterrupt:
                break
            except:
                pass
            finally:
                time.sleep(0.01)

    def connect(self, address):
        found = False

        key = (self.family, self.type, self.proto, address)
        with kb.locks.socket:
            if key not in socket._ready:
                socket._ready[key] = []
            if len(socket._ready[key]) > 0:
                self._sock = socket._ready[key].pop(0)
                found = True

        if not found:
            self._connect(address)

    if not hasattr(socket.socket, "_connect"):
        socket._ready = {}
        socket.socket._connect = socket.socket.connect
        socket.socket.connect = connect

        thread = threading.Thread(target=_)
        thread.start()

def _setHTTPHandlers():
    """
    Check and set the HTTP/SOCKS proxy for all HTTP requests.
    """
    global proxyHandler

    for _ in ("http", "https"):
        if hasattr(proxyHandler, "%s_open" % _):
            delattr(proxyHandler, "%s_open" % _)

    if conf.proxyList is not None:
        if not conf.proxyList:
            errMsg = "list of usable proxies is exhausted"
            raise SqlmapNoneDataException(errMsg)

        conf.proxy = conf.proxyList[0]
        conf.proxyList = conf.proxyList[1:]

        infoMsg = "loading proxy '%s' from a supplied proxy list file" % conf.proxy
        logger.info(infoMsg)

    elif not conf.proxy:
        if conf.hostname in ("localhost", "127.0.0.1") or conf.ignoreProxy:
            proxyHandler.proxies = {}

    if conf.proxy:
        debugMsg = "setting the HTTP/SOCKS proxy for all HTTP requests"
        logger.debug(debugMsg)

        try:
            _ = urlparse.urlsplit(conf.proxy)
        except Exception, ex:
            errMsg = "invalid proxy address '%s' ('%s')" % (conf.proxy, getSafeExString(ex))
            raise SqlmapSyntaxException, errMsg

        hostnamePort = _.netloc.split(":")

        scheme = _.scheme.upper()
        hostname = hostnamePort[0]
        port = None
        username = None
        password = None

        if len(hostnamePort) == 2:
            try:
                port = int(hostnamePort[1])
            except:
                pass  # drops into the next check block

        if not all((scheme, hasattr(PROXY_TYPE, scheme), hostname, port)):
            errMsg = "proxy value must be in format '(%s)://address:port'" % "|".join(_[0].lower() for _ in getPublicTypeMembers(PROXY_TYPE))
            raise SqlmapSyntaxException(errMsg)

        if conf.proxyCred:
            _ = re.search("^(.*?):(.*?)$", conf.proxyCred)
            if not _:
                errMsg = "proxy authentication credentials "
                errMsg += "value must be in format username:password"
                raise SqlmapSyntaxException(errMsg)
            else:
                username = _.group(1)
                password = _.group(2)

        if scheme in (PROXY_TYPE.SOCKS4, PROXY_TYPE.SOCKS5):
            proxyHandler.proxies = {}

            socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5 if scheme == PROXY_TYPE.SOCKS5 else socks.PROXY_TYPE_SOCKS4, hostname, port, username=username, password=password)
            socks.wrapmodule(urllib2)
        else:
            socks.unwrapmodule(urllib2)

            if conf.proxyCred:
                # Reference: http://stackoverflow.com/questions/34079/how-to-specify-an-authenticated-proxy-for-a-python-http-connection
                proxyString = "%s@" % conf.proxyCred
            else:
                proxyString = ""

            proxyString += "%s:%d" % (hostname, port)
            proxyHandler.proxies = {"http": proxyString, "https": proxyString}

        proxyHandler.__init__(proxyHandler.proxies)

    debugMsg = "creating HTTP requests opener object"
    logger.debug(debugMsg)

    handlers = filter(None, [proxyHandler if proxyHandler.proxies else None, authHandler, redirectHandler, rangeHandler, httpsHandler])

    if not conf.dropSetCookie:
        if not conf.loadCookies:
            conf.cj = cookielib.CookieJar()
        else:
            conf.cj = cookielib.MozillaCookieJar()
            resetCookieJar(conf.cj)

        handlers.append(urllib2.HTTPCookieProcessor(conf.cj))

    # Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html
    if conf.keepAlive:
        warnMsg = "persistent HTTP(s) connections, Keep-Alive, has "
        warnMsg += "been disabled because of its incompatibility "

        if conf.proxy:
            warnMsg += "with HTTP(s) proxy"
            logger.warn(warnMsg)
        elif conf.authType:
            warnMsg += "with authentication methods"
            logger.warn(warnMsg)
        else:
            handlers.append(keepAliveHandler)

    opener = urllib2.build_opener(*handlers)
    urllib2.install_opener(opener)

def _setSafeVisit():
    """
    Check and set the safe visit options.
    """
    if not any ((conf.safeUrl, conf.safeReqFile)):
        return

    if conf.safeReqFile:
        checkFile(conf.safeReqFile)

        raw = readCachedFileContent(conf.safeReqFile)
        match = re.search(r"\A([A-Z]+) ([^ ]+) HTTP/[0-9.]+\Z", raw[:raw.find('\n')])

        if match:
            kb.safeReq.method = match.group(1)
            kb.safeReq.url = match.group(2)
            kb.safeReq.headers = {}

            for line in raw[raw.find('\n') + 1:].split('\n'):
                line = line.strip()
                if line and ':' in line:
                    key, value = line.split(':', 1)
                    value = value.strip()
                    kb.safeReq.headers[key] = value
                    if key == HTTP_HEADER.HOST:
                        if not value.startswith("http"):
                            scheme = "http"
                            if value.endswith(":443"):
                                scheme = "https"
                            value = "%s://%s" % (scheme, value)
                        kb.safeReq.url = urlparse.urljoin(value, kb.safeReq.url)
                else:
                    break

            post = None

            if '\r\n\r\n' in raw:
                post = raw[raw.find('\r\n\r\n') + 4:]
            elif '\n\n' in raw:
                post = raw[raw.find('\n\n') + 2:]

            if post and post.strip():
                kb.safeReq.post = post
            else:
                kb.safeReq.post = None
        else:
            errMsg = "invalid format of a safe request file"
            raise SqlmapSyntaxException, errMsg
    else:
        if not re.search("^http[s]*://", conf.safeUrl):
            if ":443/" in conf.safeUrl:
                conf.safeUrl = "https://" + conf.safeUrl
            else:
                conf.safeUrl = "http://" + conf.safeUrl

    if conf.safeFreq <= 0:
        errMsg = "please provide a valid value (>0) for safe frequency (--safe-freq) while using safe visit features"
        raise SqlmapSyntaxException(errMsg)

def _setPrefixSuffix():
    if conf.prefix is not None and conf.suffix is not None:
        # Create a custom boundary object for user's supplied prefix
        # and suffix
        boundary = AttribDict()

        boundary.level = 1
        boundary.clause = [0]
        boundary.where = [1, 2, 3]
        boundary.prefix = conf.prefix
        boundary.suffix = conf.suffix

        if " like" in boundary.suffix.lower():
            if "'" in boundary.suffix.lower():
                boundary.ptype = 3
            elif '"' in boundary.suffix.lower():
                boundary.ptype = 5
        elif "'" in boundary.suffix:
            boundary.ptype = 2
        elif '"' in boundary.suffix:
            boundary.ptype = 4
        else:
            boundary.ptype = 1

        # user who provides --prefix/--suffix does not want other boundaries
        # to be tested for
        conf.boundaries = [boundary]

def _setAuthCred():
    """
    Adds authentication credentials (if any) for current target to the password manager
    (used by connection handler)
    """

    if kb.passwordMgr and all(_ is not None for _ in (conf.scheme, conf.hostname, conf.port, conf.authUsername, conf.authPassword)):
        kb.passwordMgr.add_password(None, "%s://%s:%d" % (conf.scheme, conf.hostname, conf.port), conf.authUsername, conf.authPassword)

def _setHTTPAuthentication():
    """
    Check and set the HTTP(s) authentication method (Basic, Digest, NTLM or PKI),
    username and password for first three methods, or PEM private key file for
    PKI authentication
    """

    global authHandler

    if not conf.authType and not conf.authCred and not conf.authFile:
        return

    if conf.authFile and not conf.authType:
        conf.authType = AUTH_TYPE.PKI

    elif conf.authType and not conf.authCred and not conf.authFile:
        errMsg = "you specified the HTTP authentication type, but "
        errMsg += "did not provide the credentials"
        raise SqlmapSyntaxException(errMsg)

    elif not conf.authType and conf.authCred:
        errMsg = "you specified the HTTP authentication credentials, "
        errMsg += "but did not provide the type"
        raise SqlmapSyntaxException(errMsg)

    elif (conf.authType or "").lower() not in (AUTH_TYPE.BASIC, AUTH_TYPE.DIGEST, AUTH_TYPE.NTLM, AUTH_TYPE.PKI):
        errMsg = "HTTP authentication type value must be "
        errMsg += "Basic, Digest, NTLM or PKI"
        raise SqlmapSyntaxException(errMsg)

    if not conf.authFile:
        debugMsg = "setting the HTTP authentication type and credentials"
        logger.debug(debugMsg)

        aTypeLower = conf.authType.lower()

        if aTypeLower in (AUTH_TYPE.BASIC, AUTH_TYPE.DIGEST):
            regExp = "^(.*?):(.*?)$"
            errMsg = "HTTP %s authentication credentials " % aTypeLower
            errMsg += "value must be in format 'username:password'"
        elif aTypeLower == AUTH_TYPE.NTLM:
            regExp = "^(.*\\\\.*):(.*?)$"
            errMsg = "HTTP NTLM authentication credentials value must "
            errMsg += "be in format 'DOMAIN\username:password'"
        elif aTypeLower == AUTH_TYPE.PKI:
            errMsg = "HTTP PKI authentication require "
            errMsg += "usage of option `--auth-pki`"
            raise SqlmapSyntaxException(errMsg)

        aCredRegExp = re.search(regExp, conf.authCred)

        if not aCredRegExp:
            raise SqlmapSyntaxException(errMsg)

        conf.authUsername = aCredRegExp.group(1)
        conf.authPassword = aCredRegExp.group(2)

        kb.passwordMgr = urllib2.HTTPPasswordMgrWithDefaultRealm()

        _setAuthCred()

        if aTypeLower == AUTH_TYPE.BASIC:
            authHandler = SmartHTTPBasicAuthHandler(kb.passwordMgr)

        elif aTypeLower == AUTH_TYPE.DIGEST:
            authHandler = urllib2.HTTPDigestAuthHandler(kb.passwordMgr)

        elif aTypeLower == AUTH_TYPE.NTLM:
            try:
                from ntlm import HTTPNtlmAuthHandler
            except ImportError:
                errMsg = "sqlmap requires Python NTLM third-party library "
                errMsg += "in order to authenticate via NTLM, "
                errMsg += "http://code.google.com/p/python-ntlm/"
                raise SqlmapMissingDependence(errMsg)

            authHandler = HTTPNtlmAuthHandler.HTTPNtlmAuthHandler(kb.passwordMgr)
    else:
        debugMsg = "setting the HTTP(s) authentication PEM private key"
        logger.debug(debugMsg)

        _ = safeExpandUser(conf.authFile)
        checkFile(_)
        authHandler = HTTPSPKIAuthHandler(_)

def _setHTTPExtraHeaders():
    if conf.headers:
        debugMsg = "setting extra HTTP headers"
        logger.debug(debugMsg)

        conf.headers = conf.headers.split("\n") if "\n" in conf.headers else conf.headers.split("\\n")

        for headerValue in conf.headers:
            if not headerValue.strip():
                continue

            if headerValue.count(':') >= 1:
                header, value = (_.lstrip() for _ in headerValue.split(":", 1))

                if header and value:
                    conf.httpHeaders.append((header, value))
            else:
                errMsg = "invalid header value: %s. Valid header format is 'name:value'" % repr(headerValue).lstrip('u')
                raise SqlmapSyntaxException(errMsg)

    elif not conf.requestFile and len(conf.httpHeaders or []) < 2:
        conf.httpHeaders.append((HTTP_HEADER.ACCEPT_LANGUAGE, "en-us,en;q=0.5"))
        if not conf.charset:
            conf.httpHeaders.append((HTTP_HEADER.ACCEPT_CHARSET, "ISO-8859-15,utf-8;q=0.7,*;q=0.7"))
        else:
            conf.httpHeaders.append((HTTP_HEADER.ACCEPT_CHARSET, "%s;q=0.7,*;q=0.1" % conf.charset))

        # Invalidating any caching mechanism in between
        # Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
        conf.httpHeaders.append((HTTP_HEADER.CACHE_CONTROL, "no-cache,no-store"))
        conf.httpHeaders.append((HTTP_HEADER.PRAGMA, "no-cache"))

def _defaultHTTPUserAgent():
    """
    @return: default sqlmap HTTP User-Agent header
    @rtype: C{str}
    """

    return "%s (%s)" % (VERSION_STRING, SITE)

    # Firefox 3 running on Ubuntu 9.04 updated at April 2009
    #return "Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.0.9) Gecko/2009042113 Ubuntu/9.04 (jaunty) Firefox/3.0.9"

    # Internet Explorer 7.0 running on Windows 2003 Service Pack 2 english
    # updated at March 2009
    #return "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"

def _setHTTPUserAgent():
    """
    Set the HTTP User-Agent header.
    Depending on the user options it can be:

        * The default sqlmap string
        * A default value read as user option
        * A random value read from a list of User-Agent headers from a
          file choosed as user option
    """

    if conf.mobile:
        message = "which smartphone do you want sqlmap to imitate "
        message += "through HTTP User-Agent header?\n"
        items = sorted(getPublicTypeMembers(MOBILES, True))

        for count in xrange(len(items)):
            item = items[count]
            message += "[%d] %s%s\n" % (count + 1, item[0], " (default)" if item == MOBILES.IPHONE else "")

        test = readInput(message.rstrip('\n'), default=items.index(MOBILES.IPHONE) + 1)

        try:
            item = items[int(test) - 1]
        except:
            item = MOBILES.IPHONE

        conf.httpHeaders.append((HTTP_HEADER.USER_AGENT, item[1]))

    elif conf.agent:
        debugMsg = "setting the HTTP User-Agent header"
        logger.debug(debugMsg)

        conf.httpHeaders.append((HTTP_HEADER.USER_AGENT, conf.agent))

    elif not conf.randomAgent:
        _ = True

        for header, _ in conf.httpHeaders:
            if header == HTTP_HEADER.USER_AGENT:
                _ = False
                break

        if _:
            conf.httpHeaders.append((HTTP_HEADER.USER_AGENT, _defaultHTTPUserAgent()))

    else:
        if not kb.userAgents:
            debugMsg = "loading random HTTP User-Agent header(s) from "
            debugMsg += "file '%s'" % paths.USER_AGENTS
            logger.debug(debugMsg)

            try:
                kb.userAgents = getFileItems(paths.USER_AGENTS)
            except IOError:
                warnMsg = "unable to read HTTP User-Agent header "
                warnMsg += "file '%s'" % paths.USER_AGENTS
                logger.warn(warnMsg)

                conf.httpHeaders.append((HTTP_HEADER.USER_AGENT, _defaultHTTPUserAgent()))
                return

        userAgent = random.sample(kb.userAgents or [_defaultHTTPUserAgent()], 1)[0]

        infoMsg = "fetched random HTTP User-Agent header from "
        infoMsg += "file '%s': '%s'" % (paths.USER_AGENTS, userAgent)
        logger.info(infoMsg)

        conf.httpHeaders.append((HTTP_HEADER.USER_AGENT, userAgent))

def _setHTTPReferer():
    """
    Set the HTTP Referer
    """

    if conf.referer:
        debugMsg = "setting the HTTP Referer header"
        logger.debug(debugMsg)

        conf.httpHeaders.append((HTTP_HEADER.REFERER, conf.referer))

def _setHTTPHost():
    """
    Set the HTTP Host
    """

    if conf.host:
        debugMsg = "setting the HTTP Host header"
        logger.debug(debugMsg)

        conf.httpHeaders.append((HTTP_HEADER.HOST, conf.host))

def _setHTTPCookies():
    """
    Set the HTTP Cookie header
    """

    if conf.cookie:
        debugMsg = "setting the HTTP Cookie header"
        logger.debug(debugMsg)

        conf.httpHeaders.append((HTTP_HEADER.COOKIE, conf.cookie))

def _setHTTPTimeout():
    """
    Set the HTTP timeout
    """

    if conf.timeout:
        debugMsg = "setting the HTTP timeout"
        logger.debug(debugMsg)

        conf.timeout = float(conf.timeout)

        if conf.timeout < 3.0:
            warnMsg = "the minimum HTTP timeout is 3 seconds, sqlmap "
            warnMsg += "will going to reset it"
            logger.warn(warnMsg)

            conf.timeout = 3.0
    else:
        conf.timeout = 30.0

    socket.setdefaulttimeout(conf.timeout)

def _checkDependencies():
    """
    Checks for missing dependencies.
    """

    if conf.dependencies:
        checkDependencies()

def _createTemporaryDirectory():
    """
    Creates temporary directory for this run.
    """

    try:
        if not os.path.isdir(tempfile.gettempdir()):
            os.makedirs(tempfile.gettempdir())
    except IOError, ex:
        errMsg = "there has been a problem while accessing "
        errMsg += "system's temporary directory location(s) ('%s'). Please " % getSafeExString(ex)
        errMsg += "make sure that there is enough disk space left. If problem persists, "
        errMsg += "try to set environment variable 'TEMP' to a location "
        errMsg += "writeable by the current user"
        raise SqlmapSystemException, errMsg

    if "sqlmap" not in (tempfile.tempdir or ""):
        tempfile.tempdir = tempfile.mkdtemp(prefix="sqlmap", suffix=str(os.getpid()))

    kb.tempDir = tempfile.tempdir

    if not os.path.isdir(tempfile.tempdir):
        os.makedirs(tempfile.tempdir)

def _cleanupOptions():
    """
    Cleanup configuration attributes.
    """

    debugMsg = "cleaning up configuration parameters"
    logger.debug(debugMsg)

    width = getConsoleWidth()

    if conf.eta:
        conf.progressWidth = width - 26
    else:
        conf.progressWidth = width - 46

    for key, value in conf.items():
        if value and any(key.endswith(_) for _ in ("Path", "File", "Dir")):
            conf[key] = safeExpandUser(value)

    if conf.testParameter:
        conf.testParameter = urldecode(conf.testParameter)
        conf.testParameter = conf.testParameter.replace(" ", "")
        conf.testParameter = re.split(PARAMETER_SPLITTING_REGEX, conf.testParameter)
    else:
        conf.testParameter = []

    if conf.user:
        conf.user = conf.user.replace(" ", "")

    if conf.rParam:
        conf.rParam = conf.rParam.replace(" ", "")
        conf.rParam = re.split(PARAMETER_SPLITTING_REGEX, conf.rParam)
    else:
        conf.rParam = []

    if conf.paramDel and '\\' in conf.paramDel:
        conf.paramDel = conf.paramDel.decode("string_escape")

    if conf.skip:
        conf.skip = conf.skip.replace(" ", "")
        conf.skip = re.split(PARAMETER_SPLITTING_REGEX, conf.skip)
    else:
        conf.skip = []

    if conf.cookie:
        conf.cookie = re.sub(r"[\r\n]", "", conf.cookie)

    if conf.delay:
        conf.delay = float(conf.delay)

    if conf.rFile:
        conf.rFile = ntToPosixSlashes(normalizePath(conf.rFile))

    if conf.wFile:
        conf.wFile = ntToPosixSlashes(normalizePath(conf.wFile))

    if conf.dFile:
        conf.dFile = ntToPosixSlashes(normalizePath(conf.dFile))

    if conf.sitemapUrl and not conf.sitemapUrl.lower().startswith("http"):
        conf.sitemapUrl = "http%s://%s" % ('s' if conf.forceSSL else '', conf.sitemapUrl)

    if conf.msfPath:
        conf.msfPath = ntToPosixSlashes(normalizePath(conf.msfPath))

    if conf.tmpPath:
        conf.tmpPath = ntToPosixSlashes(normalizePath(conf.tmpPath))

    if any((conf.googleDork, conf.logFile, conf.bulkFile, conf.sitemapUrl, conf.forms, conf.crawlDepth)):
        conf.multipleTargets = True

    if conf.optimize:
        setOptimize()

    if conf.data:
        conf.data = re.sub(INJECT_HERE_MARK.replace(" ", r"[^A-Za-z]*"), CUSTOM_INJECTION_MARK_CHAR, conf.data, re.I)

    if conf.url:
        conf.url = re.sub(INJECT_HERE_MARK.replace(" ", r"[^A-Za-z]*"), CUSTOM_INJECTION_MARK_CHAR, conf.url, re.I)

    if conf.os:
        conf.os = conf.os.capitalize()

    if conf.dbms:
        conf.dbms = conf.dbms.capitalize()

    if conf.testFilter:
        conf.testFilter = conf.testFilter.strip('*+')
        conf.testFilter = re.sub(r"([^.])([*+])", "\g<1>.\g<2>", conf.testFilter)

        try:
            re.compile(conf.testFilter)
        except re.error:
            conf.testFilter = re.escape(conf.testFilter)

    if conf.testSkip:
        conf.testSkip = conf.testSkip.strip('*+')
        conf.testSkip = re.sub(r"([^.])([*+])", "\g<1>.\g<2>", conf.testSkip)

        try:
            re.compile(conf.testSkip)
        except re.error:
            conf.testSkip = re.escape(conf.testSkip)

    if "timeSec" not in kb.explicitSettings:
        if conf.tor:
            conf.timeSec = 2 * conf.timeSec
            kb.adjustTimeDelay = ADJUST_TIME_DELAY.DISABLE

            warnMsg = "increasing default value for "
            warnMsg += "option '--time-sec' to %d because " % conf.timeSec
            warnMsg += "switch '--tor' was provided"
            logger.warn(warnMsg)
    else:
        kb.adjustTimeDelay = ADJUST_TIME_DELAY.DISABLE

    if conf.retries:
        conf.retries = min(conf.retries, MAX_CONNECT_RETRIES)

    if conf.code:
        conf.code = int(conf.code)

    if conf.csvDel:
        conf.csvDel = conf.csvDel.decode("string_escape")  # e.g. '\\t' -> '\t'

    if conf.torPort and isinstance(conf.torPort, basestring) and conf.torPort.isdigit():
        conf.torPort = int(conf.torPort)

    if conf.torType:
        conf.torType = conf.torType.upper()

    if conf.outputDir:
        paths.SQLMAP_OUTPUT_PATH = os.path.realpath(os.path.expanduser(conf.outputDir))
        setPaths()

    if conf.string:
        try:
            conf.string = conf.string.decode("unicode_escape")
        except:
            charset = string.whitespace.replace(" ", "")
            for _ in charset:
                conf.string = conf.string.replace(_.encode("string_escape"), _)

    if conf.getAll:
        map(lambda x: conf.__setitem__(x, True), WIZARD.ALL)

    if conf.noCast:
        for _ in DUMP_REPLACEMENTS.keys():
            del DUMP_REPLACEMENTS[_]

    if conf.dumpFormat:
        conf.dumpFormat = conf.dumpFormat.upper()

    if conf.torType:
        conf.torType = conf.torType.upper()

    if conf.col:
        conf.col = re.sub(r"\s*,\s*", ",", conf.col)

    if conf.excludeCol:
        conf.excludeCol = re.sub(r"\s*,\s*", ",", conf.excludeCol)

    if conf.binaryFields:
        conf.binaryFields = re.sub(r"\s*,\s*", ",", conf.binaryFields)

    threadData = getCurrentThreadData()
    threadData.reset()

def _dirtyPatches():
    """
    Place for "dirty" Python related patches
    """

    httplib._MAXLINE = 1 * 1024 * 1024  # to accept overly long result lines (e.g. SQLi results in HTTP header responses)

def _purgeOutput():
    """
    Safely removes (purges) output directory.
    """

    if conf.purgeOutput:
        purge(paths.SQLMAP_OUTPUT_PATH)

def _setConfAttributes():
    """
    This function set some needed attributes into the configuration
    singleton.
    """

    debugMsg = "initializing the configuration"
    logger.debug(debugMsg)

    conf.authUsername = None
    conf.authPassword = None
    conf.boundaries = []
    conf.cj = None
    conf.dbmsConnector = None
    conf.dbmsHandler = None
    conf.dnsServer = None
    conf.dumpPath = None
    conf.hashDB = None
    conf.hashDBFile = None
    conf.httpHeaders = []
    conf.hostname = None
    conf.ipv6 = False
    conf.multipleTargets = False
    conf.outputPath = None
    conf.paramDict = {}
    conf.parameters = {}
    conf.path = None
    conf.port = None
    conf.proxyList = None
    conf.resultsFilename = None
    conf.resultsFP = None
    conf.scheme = None
    conf.tests = []
    conf.trafficFP = None
    conf.wFileType = None

def _setKnowledgeBaseAttributes(flushAll=True):
    """
    This function set some needed attributes into the knowledge base
    singleton.
    """

    debugMsg = "initializing the knowledge base"
    logger.debug(debugMsg)

    kb.absFilePaths = set()
    kb.adjustTimeDelay = None
    kb.alerted = False
    kb.alwaysRefresh = None
    kb.arch = None
    kb.authHeader = None
    kb.bannerFp = AttribDict()
    kb.binaryField = False

    kb.brute = AttribDict({"tables": [], "columns": []})
    kb.bruteMode = False

    kb.cache = AttribDict()
    kb.cache.content = {}
    kb.cache.regex = {}
    kb.cache.stdev = {}

    kb.chars = AttribDict()
    kb.chars.delimiter = randomStr(length=6, lowercase=True)
    kb.chars.start = "%s%s%s" % (KB_CHARS_BOUNDARY_CHAR, randomStr(length=3, alphabet=KB_CHARS_LOW_FREQUENCY_ALPHABET), KB_CHARS_BOUNDARY_CHAR)
    kb.chars.stop = "%s%s%s" % (KB_CHARS_BOUNDARY_CHAR, randomStr(length=3, alphabet=KB_CHARS_LOW_FREQUENCY_ALPHABET), KB_CHARS_BOUNDARY_CHAR)
    kb.chars.at, kb.chars.space, kb.chars.dollar, kb.chars.hash_ = ("%s%s%s" % (KB_CHARS_BOUNDARY_CHAR, _, KB_CHARS_BOUNDARY_CHAR) for _ in randomStr(length=4, lowercase=True))

    kb.columnExistsChoice = None
    kb.commonOutputs = None
    kb.counters = {}
    kb.data = AttribDict()
    kb.dataOutputFlag = False

    # Active back-end DBMS fingerprint
    kb.dbms = None
    kb.dbmsVersion = [UNKNOWN_DBMS_VERSION]

    kb.delayCandidates = TIME_DELAY_CANDIDATES * [0]
    kb.dep = None
    kb.dnsMode = False
    kb.dnsTest = None
    kb.docRoot = None
    kb.dumpTable = None
    kb.dumpKeyboardInterrupt = False
    kb.dynamicMarkings = []
    kb.dynamicParameter = False
    kb.endDetection = False
    kb.explicitSettings = set()
    kb.extendTests = None
    kb.errorChunkLength = None
    kb.errorIsNone = True
    kb.falsePositives = []
    kb.fileReadMode = False
    kb.followSitemapRecursion = None
    kb.forcedDbms = None
    kb.forcePartialUnion = False
    kb.forceWhere = None
    kb.futileUnion = None
    kb.headersFp = {}
    kb.heuristicDbms = None
    kb.heuristicMode = False
    kb.heuristicTest = None
    kb.hintValue = None
    kb.htmlFp = []
    kb.httpErrorCodes = {}
    kb.inferenceMode = False
    kb.ignoreCasted = None
    kb.ignoreNotFound = False
    kb.ignoreTimeout = False
    kb.injection = InjectionDict()
    kb.injections = []
    kb.laggingChecked = False
    kb.lastParserStatus = None

    kb.locks = AttribDict()
    for _ in ("cache", "count", "index", "io", "limit", "log", "socket", "redirect", "request", "value"):
        kb.locks[_] = threading.Lock()

    kb.matchRatio = None
    kb.maxConnectionsFlag = False
    kb.mergeCookies = None
    kb.multiThreadMode = False
    kb.negativeLogic = False
    kb.nullConnection = None
    kb.oldMsf = None
    kb.orderByColumns = None
    kb.originalCode = None
    kb.originalPage = None
    kb.originalPageTime = None
    kb.originalTimeDelay = None
    kb.originalUrls = dict()

    # Back-end DBMS underlying operating system fingerprint via banner (-b)
    # parsing
    kb.os = None
    kb.osVersion = None
    kb.osSP = None

    kb.pageCompress = True
    kb.pageTemplate = None
    kb.pageTemplates = dict()
    kb.pageEncoding = DEFAULT_PAGE_ENCODING
    kb.pageStable = None
    kb.partRun = None
    kb.permissionFlag = False
    kb.postHint = None
    kb.postSpaceToPlus = False
    kb.postUrlEncode = True
    kb.prependFlag = False
    kb.processResponseCounter = 0
    kb.previousMethod = None
    kb.processUserMarks = None
    kb.proxyAuthHeader = None
    kb.queryCounter = 0
    kb.redirectChoice = None
    kb.reflectiveMechanism = True
    kb.reflectiveCounters = {REFLECTIVE_COUNTER.MISS: 0, REFLECTIVE_COUNTER.HIT: 0}
    kb.requestCounter = 0
    kb.resendPostOnRedirect = None
    kb.responseTimes = {}
    kb.responseTimeMode = None
    kb.responseTimePayload = None
    kb.resumeValues = True
    kb.safeCharEncode = False
    kb.safeReq = AttribDict()
    kb.singleLogFlags = set()
    kb.reduceTests = None
    kb.tlsSNI = {}
    kb.stickyDBMS = False
    kb.stickyLevel = None
    kb.storeCrawlingChoice = None
    kb.storeHashesChoice = None
    kb.suppressResumeInfo = False
    kb.technique = None
    kb.tempDir = None
    kb.testMode = False
    kb.testOnlyCustom = False
    kb.testQueryCount = 0
    kb.testType = None
    kb.threadContinue = True
    kb.threadException = False
    kb.tableExistsChoice = None
    kb.timeValidCharsRun = 0
    kb.uChar = NULL
    kb.unionDuplicates = False
    kb.xpCmdshellAvailable = False

    if flushAll:
        kb.headerPaths = {}
        kb.keywords = set(getFileItems(paths.SQL_KEYWORDS))
        kb.passwordMgr = None
        kb.skipVulnHost = None
        kb.tamperFunctions = []
        kb.targets = oset()
        kb.testedParams = set()
        kb.userAgents = None
        kb.vainRun = True
        kb.vulnHosts = set()
        kb.wafFunctions = []
        kb.wordlists = None

def _useWizardInterface():
    """
    Presents simple wizard interface for beginner users
    """

    if not conf.wizard:
        return

    logger.info("starting wizard interface")

    while not conf.url:
        message = "Please enter full target URL (-u): "
        conf.url = readInput(message, default=None)

    message = "%s data (--data) [Enter for None]: " % ((conf.method if conf.method != HTTPMETHOD.GET else conf.method) or HTTPMETHOD.POST)
    conf.data = readInput(message, default=None)

    if not (filter(lambda _: '=' in unicode(_), (conf.url, conf.data)) or '*' in conf.url):
        warnMsg = "no GET and/or %s parameter(s) found for testing " % ((conf.method if conf.method != HTTPMETHOD.GET else conf.method) or HTTPMETHOD.POST)
        warnMsg += "(e.g. GET parameter 'id' in 'http://www.site.com/vuln.php?id=1'). "
        if not conf.crawlDepth and not conf.forms:
            warnMsg += "Will search for forms"
            conf.forms = True
        logger.warn(warnMsg)

    choice = None

    while choice is None or choice not in ("", "1", "2", "3"):
        message = "Injection difficulty (--level/--risk). Please choose:\n"
        message += "[1] Normal (default)\n[2] Medium\n[3] Hard"
        choice = readInput(message, default='1')

        if choice == '2':
            conf.risk = 2
            conf.level = 3
        elif choice == '3':
            conf.risk = 3
            conf.level = 5
        else:
            conf.risk = 1
            conf.level = 1

    if not conf.getAll:
        choice = None

        while choice is None or choice not in ("", "1", "2", "3"):
            message = "Enumeration (--banner/--current-user/etc). Please choose:\n"
            message += "[1] Basic (default)\n[2] Intermediate\n[3] All"
            choice = readInput(message, default='1')

            if choice == '2':
                map(lambda x: conf.__setitem__(x, True), WIZARD.INTERMEDIATE)
            elif choice == '3':
                map(lambda x: conf.__setitem__(x, True), WIZARD.ALL)
            else:
                map(lambda x: conf.__setitem__(x, True), WIZARD.BASIC)

    logger.debug("muting sqlmap.. it will do the magic for you")
    conf.verbose = 0

    conf.batch = True
    conf.threads = 4

    dataToStdout("\nsqlmap is running, please wait..\n\n")

def _saveConfig():
    """
    Saves the command line options to a sqlmap configuration INI file
    Format.
    """

    if not conf.saveConfig:
        return

    debugMsg = "saving command line options to a sqlmap configuration INI file"
    logger.debug(debugMsg)

    config = UnicodeRawConfigParser()
    userOpts = {}

    for family in optDict.keys():
        userOpts[family] = []

    for option, value in conf.items():
        for family, optionData in optDict.items():
            if option in optionData:
                userOpts[family].append((option, value, optionData[option]))

    for family, optionData in userOpts.items():
        config.add_section(family)

        optionData.sort()

        for option, value, datatype in optionData:
            if datatype and isListLike(datatype):
                datatype = datatype[0]

            if option in IGNORE_SAVE_OPTIONS:
                continue

            if value is None:
                if datatype == OPTION_TYPE.BOOLEAN:
                    value = "False"
                elif datatype in (OPTION_TYPE.INTEGER, OPTION_TYPE.FLOAT):
                    if option in defaults:
                        value = str(defaults[option])
                    else:
                        value = "0"
                elif datatype == OPTION_TYPE.STRING:
                    value = ""

            if isinstance(value, basestring):
                value = value.replace("\n", "\n ")

            config.set(family, option, value)

    confFP = openFile(conf.saveConfig, "wb")

    try:
        config.write(confFP)
    except IOError, ex:
        errMsg = "something went wrong while trying "
        errMsg += "to write to the configuration file '%s' ('%s')" % (conf.saveConfig, getSafeExString(ex))
        raise SqlmapSystemException(errMsg)

    infoMsg = "saved command line options to the configuration file '%s'" % conf.saveConfig
    logger.info(infoMsg)

def setVerbosity():
    """
    This function set the verbosity of sqlmap output messages.
    """

    if conf.verbose is None:
        conf.verbose = 1

    conf.verbose = int(conf.verbose)

    if conf.verbose == 0:
        logger.setLevel(logging.ERROR)
    elif conf.verbose == 1:
        logger.setLevel(logging.INFO)
    elif conf.verbose > 2 and conf.eta:
        conf.verbose = 2
        logger.setLevel(logging.DEBUG)
    elif conf.verbose == 2:
        logger.setLevel(logging.DEBUG)
    elif conf.verbose == 3:
        logger.setLevel(CUSTOM_LOGGING.PAYLOAD)
    elif conf.verbose == 4:
        logger.setLevel(CUSTOM_LOGGING.TRAFFIC_OUT)
    elif conf.verbose >= 5:
        logger.setLevel(CUSTOM_LOGGING.TRAFFIC_IN)

def _normalizeOptions(inputOptions):
    """
    Sets proper option types
    """

    types_ = {}
    for group in optDict.keys():
        types_.update(optDict[group])

    for key in inputOptions:
        if key in types_:
            value = inputOptions[key]
            if value is None:
                continue

            type_ = types_[key]
            if type_ and isinstance(type_, tuple):
                type_ = type_[0]

            if type_ == OPTION_TYPE.BOOLEAN:
                try:
                    value = bool(value)
                except (TypeError, ValueError):
                    value = False
            elif type_ == OPTION_TYPE.INTEGER:
                try:
                    value = int(value)
                except (TypeError, ValueError):
                    value = 0
            elif type_ == OPTION_TYPE.FLOAT:
                try:
                    value = float(value)
                except (TypeError, ValueError):
                    value = 0.0

            inputOptions[key] = value

def _mergeOptions(inputOptions, overrideOptions):
    """
    Merge command line options with configuration file and default options.

    @param inputOptions: optparse object with command line options.
    @type inputOptions: C{instance}
    """

    if inputOptions.pickledOptions:
        try:
            inputOptions = base64unpickle(inputOptions.pickledOptions)
            _normalizeOptions(inputOptions)
        except Exception, ex:
            errMsg = "provided invalid value '%s' for option '--pickled-options'" % inputOptions.pickledOptions
            errMsg += " ('%s')" % ex if ex.message else ""
            raise SqlmapSyntaxException(errMsg)

    if inputOptions.configFile:
        configFileParser(inputOptions.configFile)

    if hasattr(inputOptions, "items"):
        inputOptionsItems = inputOptions.items()
    else:
        inputOptionsItems = inputOptions.__dict__.items()

    for key, value in inputOptionsItems:
        if key not in conf or value not in (None, False) or overrideOptions:
            conf[key] = value

    for key, value in conf.items():
        if value is not None:
            kb.explicitSettings.add(key)

    for key, value in defaults.items():
        if hasattr(conf, key) and conf[key] is None:
            conf[key] = value

    lut = {}
    for group in optDict.keys():
        lut.update((_.upper(), _) for _ in optDict[group])

    envOptions = {}
    for key, value in os.environ.items():
        if key.upper().startswith(SQLMAP_ENVIRONMENT_PREFIX):
            _ = key[len(SQLMAP_ENVIRONMENT_PREFIX):].upper()
            if _ in lut:
                envOptions[lut[_]] = value

    if envOptions:
        _normalizeOptions(envOptions)
        for key, value in envOptions.items():
            conf[key] = value

    mergedOptions.update(conf)

def _setTrafficOutputFP():
    if conf.trafficFile:
        infoMsg = "setting file for logging HTTP traffic"
        logger.info(infoMsg)

        conf.trafficFP = openFile(conf.trafficFile, "w+")

def _setDNSServer():
    if not conf.dnsName:
        return

    infoMsg = "setting up DNS server instance"
    logger.info(infoMsg)

    isAdmin = runningAsAdmin()

    if isAdmin:
        try:
            conf.dnsServer = DNSServer()
            conf.dnsServer.run()
        except socket.error, msg:
            errMsg = "there was an error while setting up "
            errMsg += "DNS server instance ('%s')" % msg
            raise SqlmapGenericException(errMsg)
    else:
        errMsg = "you need to run sqlmap as an administrator "
        errMsg += "if you want to perform a DNS data exfiltration attack "
        errMsg += "as it will need to listen on privileged UDP port 53 "
        errMsg += "for incoming address resolution attempts"
        raise SqlmapMissingPrivileges(errMsg)

def _setProxyList():
    if not conf.proxyFile:
        return

    conf.proxyList = []
    for match in re.finditer(r"(?i)((http[^:]*|socks[^:]*)://)?([\w.]+):(\d+)", readCachedFileContent(conf.proxyFile)):
        _, type_, address, port = match.groups()
        conf.proxyList.append("%s://%s:%s" % (type_ or "http", address, port))

def _setTorProxySettings():
    if not conf.tor:
        return

    if conf.torType == PROXY_TYPE.HTTP:
        _setTorHttpProxySettings()
    else:
        _setTorSocksProxySettings()

def _setTorHttpProxySettings():
    infoMsg = "setting Tor HTTP proxy settings"
    logger.info(infoMsg)

    found = None

    for port in (DEFAULT_TOR_HTTP_PORTS if not conf.torPort else (conf.torPort,)):
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.connect((LOCALHOST, port))
            found = port
            break
        except socket.error:
            pass

    s.close()

    if found:
        conf.proxy = "http://%s:%d" % (LOCALHOST, found)
    else:
        errMsg = "can't establish connection with the Tor proxy. "
        errMsg += "Please make sure that you have Vidalia, Privoxy or "
        errMsg += "Polipo bundle installed for you to be able to "
        errMsg += "successfully use switch '--tor' "

        raise SqlmapConnectionException(errMsg)

    if not conf.checkTor:
        warnMsg = "use switch '--check-tor' at "
        warnMsg += "your own convenience when accessing "
        warnMsg += "Tor anonymizing network because of "
        warnMsg += "known issues with default settings of various 'bundles' "
        warnMsg += "(e.g. Vidalia)"
        logger.warn(warnMsg)

def _setTorSocksProxySettings():
    infoMsg = "setting Tor SOCKS proxy settings"
    logger.info(infoMsg)

    # Has to be SOCKS5 to prevent DNS leaks (http://en.wikipedia.org/wiki/Tor_%28anonymity_network%29)
    socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5 if conf.torType == PROXY_TYPE.SOCKS5 else socks.PROXY_TYPE_SOCKS4, LOCALHOST, conf.torPort or DEFAULT_TOR_SOCKS_PORT)
    socks.wrapmodule(urllib2)

def _checkWebSocket():
    if conf.url and (conf.url.startswith("ws:/") or conf.url.startswith("wss:/")):
        try:
            from websocket import ABNF
        except ImportError:
            errMsg = "sqlmap requires third-party module 'websocket-client' "
            errMsg += "in order to use WebSocket funcionality"
            raise SqlmapMissingDependence(errMsg)

def _checkTor():
    if not conf.checkTor:
        return

    infoMsg = "checking Tor connection"
    logger.info(infoMsg)

    try:
        page, _, _ = Request.getPage(url="https://check.torproject.org/", raise404=False)
    except SqlmapConnectionException:
        page = None

    if not page or 'Congratulations' not in page:
        errMsg = "it seems that Tor is not properly set. Please try using options '--tor-type' and/or '--tor-port'"
        raise SqlmapConnectionException(errMsg)
    else:
        infoMsg = "Tor is properly being used"
        logger.info(infoMsg)

def _basicOptionValidation():
    if conf.limitStart is not None and not (isinstance(conf.limitStart, int) and conf.limitStart > 0):
        errMsg = "value for option '--start' (limitStart) must be an integer value greater than zero (>0)"
        raise SqlmapSyntaxException(errMsg)

    if conf.limitStop is not None and not (isinstance(conf.limitStop, int) and conf.limitStop > 0):
        errMsg = "value for option '--stop' (limitStop) must be an integer value greater than zero (>0)"
        raise SqlmapSyntaxException(errMsg)

    if conf.level is not None and not (isinstance(conf.level, int) and conf.level >= 1 and conf.level <= 5):
        errMsg = "value for option '--level' must be an integer value from range [1, 5]"
        raise SqlmapSyntaxException(errMsg)

    if conf.risk is not None and not (isinstance(conf.risk, int) and conf.risk >= 1 and conf.risk <= 3):
        errMsg = "value for option '--risk' must be an integer value from range [1, 3]"
        raise SqlmapSyntaxException(errMsg)

    if isinstance(conf.limitStart, int) and conf.limitStart > 0 and \
       isinstance(conf.limitStop, int) and conf.limitStop < conf.limitStart:
        errMsg = "value for option '--start' (limitStart) must be smaller or equal than value for --stop (limitStop) option"
        raise SqlmapSyntaxException(errMsg)

    if isinstance(conf.firstChar, int) and conf.firstChar > 0 and \
       isinstance(conf.lastChar, int) and conf.lastChar < conf.firstChar:
        errMsg = "value for option '--first' (firstChar) must be smaller than or equal to value for --last (lastChar) option"
        raise SqlmapSyntaxException(errMsg)

    if conf.textOnly and conf.nullConnection:
        errMsg = "switch '--text-only' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.direct and conf.url:
        errMsg = "option '-d' is incompatible with option '-u' ('--url')"
        raise SqlmapSyntaxException(errMsg)

    if conf.identifyWaf and conf.skipWaf:
        errMsg = "switch '--identify-waf' is incompatible with switch '--skip-waf'"
        raise SqlmapSyntaxException(errMsg)

    if conf.titles and conf.nullConnection:
        errMsg = "switch '--titles' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.dumpTable and conf.search:
        errMsg = "switch '--dump' is incompatible with switch '--search'"
        raise SqlmapSyntaxException(errMsg)

    if conf.data and conf.nullConnection:
        errMsg = "option '--data' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.string and conf.nullConnection:
        errMsg = "option '--string' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.notString and conf.nullConnection:
        errMsg = "option '--not-string' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.noCast and conf.hexConvert:
        errMsg = "switch '--no-cast' is incompatible with switch '--hex'"
        raise SqlmapSyntaxException(errMsg)

    if conf.dumpAll and conf.search:
        errMsg = "switch '--dump-all' is incompatible with switch '--search'"
        raise SqlmapSyntaxException(errMsg)

    if conf.string and conf.notString:
        errMsg = "option '--string' is incompatible with switch '--not-string'"
        raise SqlmapSyntaxException(errMsg)

    if conf.regexp and conf.nullConnection:
        errMsg = "option '--regexp' is incompatible with switch '--null-connection'"
        raise SqlmapSyntaxException(errMsg)

    if conf.regexp:
        try:
            re.compile(conf.regexp)
        except re.error, ex:
            errMsg = "invalid regular expression '%s' ('%s')" % (conf.regexp, getSafeExString(ex))
            raise SqlmapSyntaxException(errMsg)

    if conf.crawlExclude:
        try:
            re.compile(conf.crawlExclude)
        except re.error, ex:
            errMsg = "invalid regular expression '%s' ('%s')" % (conf.crawlExclude, getSafeExString(ex))
            raise SqlmapSyntaxException(errMsg)

    if conf.dumpTable and conf.dumpAll:
        errMsg = "switch '--dump' is incompatible with switch '--dump-all'"
        raise SqlmapSyntaxException(errMsg)

    if conf.predictOutput and (conf.threads > 1 or conf.optimize):
        errMsg = "switch '--predict-output' is incompatible with option '--threads' and switch '-o'"
        raise SqlmapSyntaxException(errMsg)

    if conf.threads > MAX_NUMBER_OF_THREADS and not conf.get("skipThreadCheck"):
        errMsg = "maximum number of used threads is %d avoiding potential connection issues" % MAX_NUMBER_OF_THREADS
        raise SqlmapSyntaxException(errMsg)

    if conf.forms and not any((conf.url, conf.googleDork, conf.bulkFile, conf.sitemapUrl)):
        errMsg = "switch '--forms' requires usage of option '-u' ('--url'), '-g', '-m' or '-x'"
        raise SqlmapSyntaxException(errMsg)

    if conf.crawlExclude and not conf.crawlDepth:
        errMsg = "option '--crawl-exclude' requires usage of switch '--crawl'"
        raise SqlmapSyntaxException(errMsg)

    if conf.safePost and not conf.safeUrl:
        errMsg = "option '--safe-post' requires usage of option '--safe-url'"
        raise SqlmapSyntaxException(errMsg)

    if conf.safeFreq and not any((conf.safeUrl, conf.safeReqFile)):
        errMsg = "option '--safe-freq' requires usage of option '--safe-url' or '--safe-req'"
        raise SqlmapSyntaxException(errMsg)

    if conf.safeReqFile and any((conf.safeUrl, conf.safePost)):
        errMsg = "option '--safe-req' is incompatible with option '--safe-url' and option '--safe-post'"
        raise SqlmapSyntaxException(errMsg)

    if conf.csrfUrl and not conf.csrfToken:
        errMsg = "option '--csrf-url' requires usage of option '--csrf-token'"
        raise SqlmapSyntaxException(errMsg)

    if conf.csrfToken and conf.threads > 1:
        errMsg = "option '--csrf-url' is incompatible with option '--threads'"
        raise SqlmapSyntaxException(errMsg)

    if conf.requestFile and conf.url and conf.url != DUMMY_URL:
        errMsg = "option '-r' is incompatible with option '-u' ('--url')"
        raise SqlmapSyntaxException(errMsg)

    if conf.direct and conf.proxy:
        errMsg = "option '-d' is incompatible with option '--proxy'"
        raise SqlmapSyntaxException(errMsg)

    if conf.direct and conf.tor:
        errMsg = "option '-d' is incompatible with switch '--tor'"
        raise SqlmapSyntaxException(errMsg)

    if not conf.tech:
        errMsg = "option '--technique' can't be empty"
        raise SqlmapSyntaxException(errMsg)

    if conf.tor and conf.ignoreProxy:
        errMsg = "switch '--tor' is incompatible with switch '--ignore-proxy'"
        raise SqlmapSyntaxException(errMsg)

    if conf.tor and conf.proxy:
        errMsg = "switch '--tor' is incompatible with option '--proxy'"
        raise SqlmapSyntaxException(errMsg)

    if conf.proxy and conf.proxyFile:
        errMsg = "switch '--proxy' is incompatible with option '--proxy-file'"
        raise SqlmapSyntaxException(errMsg)

    if conf.checkTor and not any((conf.tor, conf.proxy)):
        errMsg = "switch '--check-tor' requires usage of switch '--tor' (or option '--proxy' with HTTP proxy address using Tor)"
        raise SqlmapSyntaxException(errMsg)

    if conf.torPort is not None and not (isinstance(conf.torPort, int) and conf.torPort >= 0 and conf.torPort <= 65535):
        errMsg = "value for option '--tor-port' must be in range 0-65535"
        raise SqlmapSyntaxException(errMsg)

    if conf.torType not in getPublicTypeMembers(PROXY_TYPE, True):
        errMsg = "option '--tor-type' accepts one of following values: %s" % ", ".join(getPublicTypeMembers(PROXY_TYPE, True))
        raise SqlmapSyntaxException(errMsg)

    if conf.dumpFormat not in getPublicTypeMembers(DUMP_FORMAT, True):
        errMsg = "option '--dump-format' accepts one of following values: %s" % ", ".join(getPublicTypeMembers(DUMP_FORMAT, True))
        raise SqlmapSyntaxException(errMsg)

    if conf.skip and conf.testParameter:
        errMsg = "option '--skip' is incompatible with option '-p'"
        raise SqlmapSyntaxException(errMsg)

    if conf.mobile and conf.agent:
        errMsg = "switch '--mobile' is incompatible with option '--user-agent'"
        raise SqlmapSyntaxException(errMsg)

    if conf.proxy and conf.ignoreProxy:
        errMsg = "option '--proxy' is incompatible with switch '--ignore-proxy'"
        raise SqlmapSyntaxException(errMsg)

    if conf.timeSec < 1:
        errMsg = "value for option '--time-sec' must be a positive integer"
        raise SqlmapSyntaxException(errMsg)

    if conf.uChar and not re.match(UNION_CHAR_REGEX, conf.uChar):
        errMsg = "value for option '--union-char' must be an alpha-numeric value (e.g. 1)"
        raise SqlmapSyntaxException(errMsg)

    if isinstance(conf.uCols, basestring):
        if not conf.uCols.isdigit() and ("-" not in conf.uCols or len(conf.uCols.split("-")) != 2):
            errMsg = "value for option '--union-cols' must be a range with hyphon "
            errMsg += "(e.g. 1-10) or integer value (e.g. 5)"
            raise SqlmapSyntaxException(errMsg)

    if conf.dbmsCred and ':' not in conf.dbmsCred:
        errMsg = "value for option '--dbms-cred' must be in "
        errMsg += "format <username>:<password> (e.g. \"root:pass\")"
        raise SqlmapSyntaxException(errMsg)

    if conf.charset:
        _ = checkCharEncoding(conf.charset, False)
        if _ is None:
            errMsg = "unknown charset '%s'. Please visit " % conf.charset
            errMsg += "'%s' to get the full list of " % CODECS_LIST_PAGE
            errMsg += "supported charsets"
            raise SqlmapSyntaxException(errMsg)
        else:
            conf.charset = _

    if conf.loadCookies:
        if not os.path.exists(conf.loadCookies):
            errMsg = "cookies file '%s' does not exist" % conf.loadCookies
            raise SqlmapFilePathException(errMsg)

def _resolveCrossReferences():
    lib.core.threads.readInput = readInput
    lib.core.common.getPageTemplate = getPageTemplate
    lib.core.convert.singleTimeWarnMessage = singleTimeWarnMessage
    lib.request.connect.setHTTPHandlers = _setHTTPHandlers
    lib.utils.search.setHTTPHandlers = _setHTTPHandlers
    lib.controller.checks.setVerbosity = setVerbosity

def initOptions(inputOptions=AttribDict(), overrideOptions=False):
    _setConfAttributes()
    _setKnowledgeBaseAttributes()
    _mergeOptions(inputOptions, overrideOptions)

def init():
    """
    Set attributes into both configuration and knowledge base singletons
    based upon command line and configuration file options.
    """

    _useWizardInterface()
    setVerbosity()
    _saveConfig()
    _setRequestFromFile()
    _cleanupOptions()
    _dirtyPatches()
    _purgeOutput()
    _checkDependencies()
    _createTemporaryDirectory()
    _basicOptionValidation()
    _setProxyList()
    _setTorProxySettings()
    _setDNSServer()
    _adjustLoggingFormatter()
    _setMultipleTargets()
    _setTamperingFunctions()
    _setWafFunctions()
    _setTrafficOutputFP()
    _resolveCrossReferences()
    _checkWebSocket()

    parseTargetUrl()
    parseTargetDirect()

    if any((conf.url, conf.logFile, conf.bulkFile, conf.sitemapUrl, conf.requestFile, conf.googleDork, conf.liveTest)):
        _setHTTPTimeout()
        _setHTTPExtraHeaders()
        _setHTTPCookies()
        _setHTTPReferer()
        _setHTTPHost()
        _setHTTPUserAgent()
        _setHTTPAuthentication()
        _setHTTPHandlers()
        _setDNSCache()
        _setSocketPreConnect()
        _setSafeVisit()
        _doSearch()
        _setBulkMultipleTargets()
        _setSitemapTargets()
        _checkTor()
        _setCrawler()
        _findPageForms()
        _setDBMS()
        _setTechnique()

    _setThreads()
    _setOS()
    _setWriteFile()
    _setMetasploit()
    _setDBMSAuthentication()
    loadBoundaries()
    loadPayloads()
    _setPrefixSuffix()
    update()
    _loadQueries()