/lib/core/common.py

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#!/usr/bin/env python

"""
Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""

import codecs
import contextlib
import cookielib
import copy
import ctypes
import httplib
import inspect
import logging
import ntpath
import os
import posixpath
import random
import re
import socket
import string
import struct
import sys
import time
import urllib
import urlparse
import unicodedata

from ConfigParser import DEFAULTSECT
from ConfigParser import RawConfigParser
from StringIO import StringIO
from difflib import SequenceMatcher
from math import sqrt
from optparse import OptionValueError
from subprocess import PIPE
from subprocess import Popen as execute
from xml.dom import minidom
from xml.sax import parse

from extra.safe2bin.safe2bin import safecharencode
from lib.core.bigarray import BigArray
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.data import paths
from lib.core.convert import base64pickle
from lib.core.convert import base64unpickle
from lib.core.convert import hexdecode
from lib.core.convert import htmlunescape
from lib.core.convert import stdoutencode
from lib.core.convert import unicodeencode
from lib.core.convert import utf8encode
from lib.core.decorators import cachedmethod
from lib.core.dicts import DBMS_DICT
from lib.core.dicts import DEPRECATED_HINTS
from lib.core.dicts import SQL_STATEMENTS
from lib.core.enums import ADJUST_TIME_DELAY
from lib.core.enums import CHARSET_TYPE
from lib.core.enums import DBMS
from lib.core.enums import EXPECTED
from lib.core.enums import HEURISTIC_TEST
from lib.core.enums import HTTPHEADER
from lib.core.enums import HTTPMETHOD
from lib.core.enums import OS
from lib.core.enums import PLACE
from lib.core.enums import PAYLOAD
from lib.core.enums import REFLECTIVE_COUNTER
from lib.core.enums import SORT_ORDER
from lib.core.exception import SqlmapDataException
from lib.core.exception import SqlmapFilePathException
from lib.core.exception import SqlmapGenericException
from lib.core.exception import SqlmapNoneDataException
from lib.core.exception import SqlmapMissingDependence
from lib.core.exception import SqlmapSilentQuitException
from lib.core.exception import SqlmapSyntaxException
from lib.core.exception import SqlmapUserQuitException
from lib.core.log import LOGGER_HANDLER
from lib.core.optiondict import optDict
from lib.core.settings import BOLD_PATTERNS
from lib.core.settings import CUSTOM_INJECTION_MARK_CHAR
from lib.core.settings import DBMS_DIRECTORY_DICT
from lib.core.settings import DEFAULT_COOKIE_DELIMITER
from lib.core.settings import DEFAULT_GET_POST_DELIMITER
from lib.core.settings import DEFAULT_MSSQL_SCHEMA
from lib.core.settings import DEPRECATED_OPTIONS
from lib.core.settings import DESCRIPTION
from lib.core.settings import DUMMY_SQL_INJECTION_CHARS
from lib.core.settings import DUMMY_USER_INJECTION
from lib.core.settings import DYNAMICITY_MARK_LENGTH
from lib.core.settings import ERROR_PARSING_REGEXES
from lib.core.settings import FORM_SEARCH_REGEX
from lib.core.settings import GENERIC_DOC_ROOT_DIRECTORY_NAMES
from lib.core.settings import HASHDB_MILESTONE_VALUE
from lib.core.settings import HOST_ALIASES
from lib.core.settings import INFERENCE_UNKNOWN_CHAR
from lib.core.settings import ISSUES_PAGE
from lib.core.settings import IS_WIN
from lib.core.settings import LARGE_OUTPUT_THRESHOLD
from lib.core.settings import MIN_TIME_RESPONSES
from lib.core.settings import ML
from lib.core.settings import NULL
from lib.core.settings import PARAMETER_AMP_MARKER
from lib.core.settings import PARAMETER_SEMICOLON_MARKER
from lib.core.settings import PARTIAL_VALUE_MARKER
from lib.core.settings import PAYLOAD_DELIMITER
from lib.core.settings import PLATFORM
from lib.core.settings import PRINTABLE_CHAR_REGEX
from lib.core.settings import PYVERSION
from lib.core.settings import REFERER_ALIASES
from lib.core.settings import REFLECTED_BORDER_REGEX
from lib.core.settings import REFLECTED_MAX_REGEX_PARTS
from lib.core.settings import REFLECTED_REPLACEMENT_REGEX
from lib.core.settings import REFLECTED_VALUE_MARKER
from lib.core.settings import REFLECTIVE_MISS_THRESHOLD
from lib.core.settings import REVISION
from lib.core.settings import SENSITIVE_DATA_REGEX
from lib.core.settings import SITE
from lib.core.settings import SUPPORTED_DBMS
from lib.core.settings import TEXT_TAG_REGEX
from lib.core.settings import TIME_STDEV_COEFF
from lib.core.settings import UNICODE_ENCODING
from lib.core.settings import UNKNOWN_DBMS_VERSION
from lib.core.settings import URI_QUESTION_MARKER
from lib.core.settings import URLENCODE_CHAR_LIMIT
from lib.core.settings import URLENCODE_FAILSAFE_CHARS
from lib.core.settings import USER_AGENT_ALIASES
from lib.core.settings import VERSION
from lib.core.settings import VERSION_STRING
from lib.core.threads import getCurrentThreadData
from thirdparty.clientform.clientform import ParseResponse
from thirdparty.clientform.clientform import ParseError
from thirdparty.magic import magic
from thirdparty.odict.odict import OrderedDict
from thirdparty.termcolor.termcolor import colored

class UnicodeRawConfigParser(RawConfigParser):
    """
    RawConfigParser with unicode writing support
    """

    def write(self, fp):
        """
        Write an .ini-format representation of the configuration state.
        """

        if self._defaults:
            fp.write("[%s]\n" % DEFAULTSECT)

            for (key, value) in self._defaults.items():
                fp.write("%s = %s\n" % (key, getUnicode(value, UNICODE_ENCODING).replace('\n', '\n\t')))

            fp.write("\n")

        for section in self._sections:
            fp.write("[%s]\n" % section)

            for (key, value) in self._sections[section].items():
                if key != "__name__":
                    if value is None:
                        fp.write("%s\n" % (key))
                    else:
                        fp.write("%s = %s\n" % (key, getUnicode(value, UNICODE_ENCODING).replace('\n', '\n\t')))

            fp.write("\n")

class Format(object):
    @staticmethod
    def humanize(values, chain=" or "):
        return chain.join(values)

    # Get methods
    @staticmethod
    def getDbms(versions=None):
        """
        Format the back-end DBMS fingerprint value and return its
        values formatted as a human readable string.

        @return: detected back-end DBMS based upon fingerprint techniques.
        @rtype: C{str}
        """

        if versions is None and Backend.getVersionList():
            versions = Backend.getVersionList()

        return Backend.getDbms() if versions is None else "%s %s" % (Backend.getDbms(), " and ".join(v for v in versions))

    @staticmethod
    def getErrorParsedDBMSes():
        """
        Parses the knowledge base htmlFp list and return its values
        formatted as a human readable string.

        @return: list of possible back-end DBMS based upon error messages
        parsing.
        @rtype: C{str}
        """

        htmlParsed = None

        if len(kb.htmlFp) == 0 or kb.heuristicTest != HEURISTIC_TEST.POSITIVE:
            pass
        elif len(kb.htmlFp) == 1:
            htmlParsed = kb.htmlFp[0]
        elif len(kb.htmlFp) > 1:
            htmlParsed = " or ".join(kb.htmlFp)

        return htmlParsed

    @staticmethod
    def getOs(target, info):
        """
        Formats the back-end operating system fingerprint value
        and return its values formatted as a human readable string.

        Example of info (kb.headersFp) dictionary:

        {
          'distrib': set(['Ubuntu']),
          'type': set(['Linux']),
          'technology': set(['PHP 5.2.6', 'Apache 2.2.9']),
          'release': set(['8.10'])
        }

        Example of info (kb.bannerFp) dictionary:

        {
          'sp': set(['Service Pack 4']),
          'dbmsVersion': '8.00.194',
          'dbmsServicePack': '0',
          'distrib': set(['2000']),
          'dbmsRelease': '2000',
          'type': set(['Windows'])
        }

        @return: detected back-end operating system based upon fingerprint
        techniques.
        @rtype: C{str}
        """

        infoStr = ""

        if info and "type" in info:
            infoStr += "%s operating system: %s" % (target, Format.humanize(info["type"]))

            if "distrib" in info:
                infoStr += " %s" % Format.humanize(info["distrib"])

            if "release" in info:
                infoStr += " %s" % Format.humanize(info["release"])

            if "sp" in info:
                infoStr += " %s" % Format.humanize(info["sp"])

            if "codename" in info:
                infoStr += " (%s)" % Format.humanize(info["codename"])

        if "technology" in info:
            infoStr += "\nweb application technology: %s" % Format.humanize(info["technology"], ", ")

        return infoStr.lstrip()

class Backend:
    # Set methods
    @staticmethod
    def setDbms(dbms):
        dbms = aliasToDbmsEnum(dbms)

        if dbms is None:
            return None

        # Little precaution, in theory this condition should always be false
        elif kb.dbms is not None and kb.dbms != dbms:
            msg = "sqlmap previously fingerprinted back-end DBMS "
            msg += "%s. However now it has been fingerprinted " % kb.dbms
            msg += "to be %s. " % dbms
            msg += "Please, specify which DBMS is "
            msg += "correct [%s (default)/%s] " % (kb.dbms, dbms)

            while True:
                _ = readInput(msg, default=kb.dbms)

                if aliasToDbmsEnum(_) == kb.dbms:
                    break
                elif aliasToDbmsEnum(_) == dbms:
                    kb.dbms = aliasToDbmsEnum(_)
                    break
                else:
                    warnMsg = "invalid value"
                    logger.warn(warnMsg)

        elif kb.dbms is None:
            kb.dbms = aliasToDbmsEnum(dbms)

        return kb.dbms

    @staticmethod
    def setVersion(version):
        if isinstance(version, basestring):
            kb.dbmsVersion = [version]

        return kb.dbmsVersion

    @staticmethod
    def setVersionList(versionsList):
        if isinstance(versionsList, list):
            kb.dbmsVersion = versionsList
        elif isinstance(versionsList, basestring):
            Backend.setVersion(versionsList)
        else:
            logger.error("invalid format of versionsList")

    @staticmethod
    def forceDbms(dbms, sticky=False):
        if not kb.stickyDBMS:
            kb.forcedDbms = aliasToDbmsEnum(dbms)
            kb.stickyDBMS = sticky

    @staticmethod
    def flushForcedDbms(force=False):
        if not kb.stickyDBMS or force:
            kb.forcedDbms = None
            kb.stickyDBMS = False

    @staticmethod
    def setOs(os):
        if os is None:
            return None

        # Little precaution, in theory this condition should always be false
        elif kb.os is not None and isinstance(os, basestring) and kb.os.lower() != os.lower():
            msg = "sqlmap previously fingerprinted back-end DBMS "
            msg += "operating system %s. However now it has " % kb.os
            msg += "been fingerprinted to be %s. " % os
            msg += "Please, specify which OS is "
            msg += "correct [%s (default)/%s] " % (kb.os, os)

            while True:
                _ = readInput(msg, default=kb.os)

                if _ == kb.os:
                    break
                elif _ == os:
                    kb.os = _.capitalize()
                    break
                else:
                    warnMsg = "invalid value"
                    logger.warn(warnMsg)

        elif kb.os is None and isinstance(os, basestring):
            kb.os = os.capitalize()

        return kb.os

    @staticmethod
    def setOsVersion(version):
        if version is None:
            return None

        elif kb.osVersion is None and isinstance(version, basestring):
            kb.osVersion = version

    @staticmethod
    def setOsServicePack(sp):
        if sp is None:
            return None

        elif kb.osSP is None and isinstance(sp, int):
            kb.osSP = sp

    @staticmethod
    def setArch():
        msg = "what is the back-end database management system architecture?"
        msg += "\n[1] 32-bit (default)"
        msg += "\n[2] 64-bit"

        while True:
            _ = readInput(msg, default='1')

            if isinstance(_, basestring) and _.isdigit() and int(_) in (1, 2):
                kb.arch = 32 if int(_) == 1 else 64
                break
            else:
                warnMsg = "invalid value. Valid values are 1 and 2"
                logger.warn(warnMsg)

        return kb.arch

    # Get methods
    @staticmethod
    def getForcedDbms():
        return aliasToDbmsEnum(kb.get("forcedDbms"))

    @staticmethod
    def getDbms():
        return aliasToDbmsEnum(kb.get("dbms"))

    @staticmethod
    def getErrorParsedDBMSes():
        """
        Returns array with parsed DBMS names till now

        This functions is called to:

        1. Sort the tests, getSortedInjectionTests() - detection phase.
        2. Ask user whether or not skip specific DBMS tests in detection phase,
           lib/controller/checks.py - detection phase.
        3. Sort the fingerprint of the DBMS, lib/controller/handler.py -
           fingerprint phase.
        """

        return kb.htmlFp if kb.get("heuristicTest") == HEURISTIC_TEST.POSITIVE else []

    @staticmethod
    def getIdentifiedDbms():
        dbms = None

        if not kb:
            pass
        elif Backend.getForcedDbms() is not None:
            dbms = Backend.getForcedDbms()
        elif Backend.getDbms() is not None:
            dbms = kb.dbms
        elif conf.get("dbms"):
            dbms = conf.dbms
        elif Backend.getErrorParsedDBMSes():
            dbms = unArrayizeValue(Backend.getErrorParsedDBMSes())
        elif kb.get("injection") and kb.injection.dbms:
            dbms = unArrayizeValue(kb.injection.dbms)

        return aliasToDbmsEnum(dbms)

    @staticmethod
    def getVersion():
        if len(kb.dbmsVersion) > 0:
            return kb.dbmsVersion[0]
        else:
            return None

    @staticmethod
    def getVersionList():
        if len(kb.dbmsVersion) > 0:
            return kb.dbmsVersion
        else:
            return None

    @staticmethod
    def getOs():
        return kb.os

    @staticmethod
    def getOsVersion():
        return kb.osVersion

    @staticmethod
    def getOsServicePack():
        return kb.osSP

    @staticmethod
    def getArch():
        if kb.arch is None:
            Backend.setArch()
        return kb.arch

    # Comparison methods
    @staticmethod
    def isDbms(dbms):
        if Backend.getDbms() is not None:
            return Backend.getDbms() == aliasToDbmsEnum(dbms)
        else:
            return Backend.getIdentifiedDbms() == aliasToDbmsEnum(dbms)

    @staticmethod
    def isDbmsWithin(aliases):
        return Backend.getDbms() is not None and Backend.getDbms().lower() in aliases

    @staticmethod
    def isVersion(version):
        return Backend.getVersion() is not None and Backend.getVersion() == version

    @staticmethod
    def isVersionWithin(versionList):
        if Backend.getVersionList() is None:
            return False

        for _ in Backend.getVersionList():
            if _ != UNKNOWN_DBMS_VERSION and _ in versionList:
                return True

        return False

    @staticmethod
    def isVersionGreaterOrEqualThan(version):
        return Backend.getVersion() is not None and str(Backend.getVersion()) >= str(version)

    @staticmethod
    def isOs(os):
        return Backend.getOs() is not None and Backend.getOs().lower() == os.lower()

def paramToDict(place, parameters=None):
    """
    Split the parameters into names and values, check if these parameters
    are within the testable parameters and return in a dictionary.
    """

    testableParameters = OrderedDict()

    if place in conf.parameters and not parameters:
        parameters = conf.parameters[place]

    parameters = parameters.replace(", ", ",")
    parameters = re.sub(r"&(\w{1,4});", r"%s\g<1>%s" % (PARAMETER_AMP_MARKER, PARAMETER_SEMICOLON_MARKER), parameters)
    splitParams = parameters.split(conf.pDel or (DEFAULT_COOKIE_DELIMITER if place == PLACE.COOKIE else DEFAULT_GET_POST_DELIMITER))

    for element in splitParams:
        element = re.sub(r"%s(.+?)%s" % (PARAMETER_AMP_MARKER, PARAMETER_SEMICOLON_MARKER), r"&\g<1>;", element)
        elem = element.split("=")

        if len(elem) >= 2:
            parameter = elem[0].replace(" ", "")

            condition = not conf.testParameter
            condition |= parameter in conf.testParameter

            if condition:
                testableParameters[parameter] = "=".join(elem[1:])
                if not conf.multipleTargets:
                    _ = urldecode(testableParameters[parameter], convall=True)
                    if _.strip(DUMMY_SQL_INJECTION_CHARS) != _\
                        or re.search(r'\A9{3,}', _) or re.search(DUMMY_USER_INJECTION, _):
                        warnMsg = "it appears that you have provided tainted parameter values "
                        warnMsg += "('%s') with most probably leftover " % element
                        warnMsg += "chars/statements from manual SQL injection test(s). "
                        warnMsg += "Please, always use only valid parameter values "
                        warnMsg += "so sqlmap could be able to properly run "
                        logger.warn(warnMsg)

                        message = "Are you sure you want to continue? [y/N] "
                        test = readInput(message, default="N")
                        if test[0] not in ("y", "Y"):
                            raise SqlmapSilentQuitException

    if conf.testParameter and not testableParameters:
        paramStr = ", ".join(test for test in conf.testParameter)

        if len(conf.testParameter) > 1:
            warnMsg = "provided parameters '%s' " % paramStr
            warnMsg += "are not inside the %s" % place
            logger.warn(warnMsg)
        else:
            parameter = conf.testParameter[0]

            if not intersect(USER_AGENT_ALIASES + REFERER_ALIASES + HOST_ALIASES, parameter, True):
                warnMsg = "provided parameter '%s' " % paramStr
                warnMsg += "is not inside the %s" % place
                logger.warn(warnMsg)

    elif len(conf.testParameter) != len(testableParameters.keys()):
        for parameter in conf.testParameter:
            if parameter not in testableParameters:
                warnMsg =  "provided parameter '%s' " % parameter
                warnMsg += "is not inside the %s" % place
                logger.warn(warnMsg)

    return testableParameters

def getDocRoot():
    docRoot = None
    pagePath = directoryPath(conf.path)

    defaultDocRoot = ("C:/xampp/htdocs/", "C:/Inetpub/wwwroot/") if Backend.isOs(OS.WINDOWS) else ("/var/www/",)

    if kb.absFilePaths:
        for absFilePath in kb.absFilePaths:
            if docRoot:
                break

            if directoryPath(absFilePath) == '/':
                continue

            absFilePath = normalizePath(absFilePath)
            windowsDriveLetter = None

            if isWindowsDriveLetterPath(absFilePath):
                windowsDriveLetter, absFilePath = absFilePath[:2], absFilePath[2:]
                absFilePath = ntToPosixSlashes(posixToNtSlashes(absFilePath))

            if any("/%s/" % _ in absFilePath for _ in GENERIC_DOC_ROOT_DIRECTORY_NAMES):
                for _ in GENERIC_DOC_ROOT_DIRECTORY_NAMES:
                    _ = "/%s/" % _
                    if _ in absFilePath:
                        docRoot = "%s%s" % (absFilePath.split(_)[0], _)
                        break

            elif pagePath in absFilePath:
                docRoot = absFilePath.split(pagePath)[0]
                if windowsDriveLetter:
                    docRoot = "%s/%s" % (windowsDriveLetter, ntToPosixSlashes(docRoot))

    docRoot = normalizePath(docRoot)

    if docRoot:
        infoMsg = "retrieved the web server document root: '%s'" % docRoot
        logger.info(infoMsg)
    else:
        warnMsg = "unable to retrieve the web server document root"
        logger.warn(warnMsg)

        message = "please provide the web server document root "
        message += "[%s]: " % ",".join(root for root in defaultDocRoot)
        inputDocRoot = readInput(message, default=defaultDocRoot)

        if inputDocRoot:
            if isinstance(inputDocRoot, basestring):
                docRoot = inputDocRoot.split(',')
            else:
                docRoot = inputDocRoot
        else:
            docRoot = defaultDocRoot

    return docRoot

def getDirs():
    directories = set("/")

    if kb.absFilePaths:
        infoMsg = "retrieved web server full paths: "
        infoMsg += "'%s'" % ", ".join(ntToPosixSlashes(path) for path in kb.absFilePaths)
        logger.info(infoMsg)

        for absFilePath in kb.absFilePaths:
            if absFilePath:
                directory = directoryPath(absFilePath)
                directory = ntToPosixSlashes(directory)
                directories.add(directory)
    else:
        warnMsg = "unable to retrieve any web server path"
        logger.warn(warnMsg)

    webDir = extractRegexResult(r"//[^/]+?/(?P<result>.*)/.", conf.url)
    if webDir:
        directories.add(webDir)

    message = "please provide any additional web server full path to try "
    message += "to upload the agent [Enter for None]: "
    inputDirs = readInput(message)

    if inputDirs:
        inputDirs = inputDirs.replace(", ", ",")
        inputDirs = inputDirs.split(",")

        for inputDir in inputDirs:
            if inputDir:
                directories.add(inputDir)

    return list(directories)

def filePathToString(filePath):
    strRepl = filePath.replace("/", "_").replace("\\", "_")
    strRepl = strRepl.replace(" ", "_").replace(":", "_")

    return strRepl

def singleTimeDebugMessage(message):
    singleTimeLogMessage(message, logging.DEBUG)

def singleTimeWarnMessage(message):
    singleTimeLogMessage(message, logging.WARN)

def singleTimeLogMessage(message, level=logging.INFO, flag=None):
    if flag is None:
        flag = hash(message)

    if flag not in kb.singleLogFlags:
        kb.singleLogFlags.add(flag)
        logger.log(level, message)

def boldifyMessage(message):
    retVal = message

    if any(_ in message for _ in BOLD_PATTERNS):
        retVal = setColor(message, True)

    return retVal

def setColor(message, bold=False):
    retVal = message
    level = extractRegexResult(r"\[(?P<result>[A-Z ]+)\]", message) or kb.get("stickyLevel")

    if message and getattr(LOGGER_HANDLER, "is_tty", False):  # colorizing handler
        if bold:
            retVal = colored(message, color=None, on_color=None, attrs=("bold",))
        elif level:
            _ = LOGGER_HANDLER.level_map.get(logging.getLevelName(level))
            if _:
                background, foreground, bold = _
                retVal = colored(message, color=foreground, on_color="on_%s" % background if background else None, attrs=("bold",) if bold else None)

            kb.stickyLevel = level if message and message[-1] != "\n" else None

    return retVal

def dataToStdout(data, forceOutput=False, bold=False):
    """
    Writes text to the stdout (console) stream
    """

    message = ""

    if not kb.get("threadException"):
        if forceOutput or not getCurrentThreadData().disableStdOut:
            if kb.get("multiThreadMode"):
                logging._acquireLock()

            message = stdoutencode(data)
            sys.stdout.write(setColor(message, bold))

            try:
                sys.stdout.flush()
            except IOError:
                pass

            if kb.get("multiThreadMode"):
                logging._releaseLock()

            kb.prependFlag = len(data) == 1 and data not in ('\n', '\r') or len(data) > 2 and data[0] == '\r' and data[-1] != '\n'

def dataToTrafficFile(data):
    if not conf.trafficFile:
        return

    conf.trafficFP.write(data)
    conf.trafficFP.flush()

def dataToDumpFile(dumpFile, data):
    dumpFile.write(data)
    dumpFile.flush()

def dataToOutFile(filename, data):
    if not data:
        return "No data retrieved"

    retVal = "%s%s%s" % (conf.filePath, os.sep, filePathToString(filename))

    with codecs.open(retVal, "wb") as f:
        f.write(data)

    return retVal

def strToHex(value):
    """
    Converts string value to it's hexadecimal representation
    """

    return (value if not isinstance(value, unicode) else value.encode(UNICODE_ENCODING)).encode("hex").upper()

def readInput(message, default=None, checkBatch=True):
    """
    Reads input from terminal
    """

    retVal = None
    kb.stickyLevel = None

    if "\n" in message:
        message += "%s> " % ("\n" if message.count("\n") > 1 else "")
    elif message[-1] == ']':
        message += " "

    if conf.answers:
        for item in conf.answers.split(','):
            question = item.split('=')[0].strip()
            answer = item.split('=')[1] if len(item.split('=')) > 1 else None
            if answer and question.lower() in message.lower():
                retVal = getUnicode(answer, UNICODE_ENCODING)

                infoMsg = "%s%s" % (getUnicode(message), retVal)
                logger.info(infoMsg)

                debugMsg = "used the given answer"
                logger.debug(debugMsg)

                break

    if retVal is None:
        if checkBatch and conf.batch:
            if isListLike(default):
                options = ",".join(getUnicode(opt, UNICODE_ENCODING) for opt in default)
            elif default:
                options = getUnicode(default, UNICODE_ENCODING)
            else:
                options = unicode()

            infoMsg = "%s%s" % (getUnicode(message), options)
            logger.info(infoMsg)

            debugMsg = "used the default behaviour, running in batch mode"
            logger.debug(debugMsg)

            retVal = default
        else:
            logging._acquireLock()
            dataToStdout("\r%s" % message, forceOutput=True, bold=True)
            kb.prependFlag = False
            try:
                retVal = raw_input() or default
                retVal = getUnicode(retVal, system=True) if retVal else retVal
            except:
                time.sleep(0.05)  # Reference: http://www.gossamer-threads.com/lists/python/python/781893
                kb.prependFlag = True
                raise SqlmapUserQuitException
            finally:
                logging._releaseLock()

    return retVal

def randomRange(start=0, stop=1000):
    """
    Returns random integer value in given range
    """

    return int(random.randint(start, stop))

def randomInt(length=4):
    """
    Returns random integer value with provided number of digits
    """

    return int("".join(random.choice(string.digits if i!=0 else string.digits.replace('0', '')) for i in xrange(0, length)))

def randomStr(length=4, lowercase=False, alphabet=None):
    """
    Returns random string value with provided number of characters
    """

    if alphabet:
        retVal = "".join(random.choice(alphabet) for _ in xrange(0, length))
    elif lowercase:
        retVal = "".join(random.choice(string.lowercase) for _ in xrange(0, length))
    else:
        retVal = "".join(random.choice(string.letters) for _ in xrange(0, length))

    return retVal

def sanitizeStr(value):
    """
    Sanitizes string value in respect to newline and line-feed characters
    """

    return getUnicode(value).replace("\n", " ").replace("\r", "")

def checkFile(filename):
    """
    Checks for file existence
    """

    if not os.path.isfile(filename):
        raise SqlmapFilePathException, "unable to read file '%s'" % filename

def banner():
    """
    This function prints sqlmap banner with its version
    """

    _ = """\n    %s - %s\n    %s\n\n""" % (VERSION_STRING, DESCRIPTION, SITE)
    dataToStdout(_, forceOutput=True)

def parsePasswordHash(password):
    blank = " " * 8

    if not password or password == " ":
        password = NULL

    if Backend.isDbms(DBMS.MSSQL) and password != NULL and isHexEncodedString(password):
        hexPassword = password
        password = "%s\n" % hexPassword
        password += "%sheader: %s\n" % (blank, hexPassword[:6])
        password += "%ssalt: %s\n" % (blank, hexPassword[6:14])
        password += "%smixedcase: %s\n" % (blank, hexPassword[14:54])

        if not Backend.isVersionWithin(("2005", "2008")):
            password += "%suppercase: %s" % (blank, hexPassword[54:])

    return password

def cleanQuery(query):
    retVal = query

    for sqlStatements in SQL_STATEMENTS.values():
        for sqlStatement in sqlStatements:
            sqlStatementEsc = sqlStatement.replace("(", "\\(")
            queryMatch = re.search("(%s)" % sqlStatementEsc, query, re.I)

            if queryMatch and "sys_exec" not in query:
                retVal = retVal.replace(queryMatch.group(1), sqlStatement.upper())

    return retVal

def setPaths():
    """
    Sets absolute paths for project directories and files
    """

    # sqlmap paths
    paths.SQLMAP_EXTRAS_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "extra")
    paths.SQLMAP_PROCS_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "procs")
    paths.SQLMAP_SHELL_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "shell")
    paths.SQLMAP_TAMPER_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "tamper")
    paths.SQLMAP_TXT_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "txt")
    paths.SQLMAP_UDF_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "udf")
    paths.SQLMAP_XML_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "xml")
    paths.SQLMAP_XML_BANNER_PATH = os.path.join(paths.SQLMAP_XML_PATH, "banner")
    paths.SQLMAP_OUTPUT_PATH = os.path.join(paths.SQLMAP_ROOT_PATH, "output")
    paths.SQLMAP_DUMP_PATH = os.path.join(paths.SQLMAP_OUTPUT_PATH, "%s", "dump")
    paths.SQLMAP_FILES_PATH = os.path.join(paths.SQLMAP_OUTPUT_PATH, "%s", "files")
    paths.SQLMAP_SEXEC_PATH = os.path.join(paths.SQLMAP_EXTRAS_PATH, "shellcodeexec")

    # sqlmap files
    paths.SQLMAP_HISTORY = os.path.join(paths.SQLMAP_ROOT_PATH, ".sqlmap_history")
    paths.SQLMAP_CONFIG = os.path.join(paths.SQLMAP_ROOT_PATH, "sqlmap-%s.conf" % randomStr())
    paths.COMMON_COLUMNS = os.path.join(paths.SQLMAP_TXT_PATH, "common-columns.txt")
    paths.COMMON_TABLES = os.path.join(paths.SQLMAP_TXT_PATH, "common-tables.txt")
    paths.COMMON_OUTPUTS = os.path.join(paths.SQLMAP_TXT_PATH, 'common-outputs.txt')
    paths.SQL_KEYWORDS = os.path.join(paths.SQLMAP_TXT_PATH, "keywords.txt")
    paths.SMALL_DICT = os.path.join(paths.SQLMAP_TXT_PATH, "smalldict.txt")
    paths.USER_AGENTS = os.path.join(paths.SQLMAP_TXT_PATH, "user-agents.txt")
    paths.WORDLIST = os.path.join(paths.SQLMAP_TXT_PATH, "wordlist.zip")
    paths.PHPIDS_RULES_XML = os.path.join(paths.SQLMAP_XML_PATH, "phpids_rules.xml")
    paths.ERRORS_XML = os.path.join(paths.SQLMAP_XML_PATH, "errors.xml")
    paths.PAYLOADS_XML = os.path.join(paths.SQLMAP_XML_PATH, "payloads.xml")
    paths.INJECTIONS_XML = os.path.join(paths.SQLMAP_XML_PATH, "injections.xml")
    paths.LIVE_TESTS_XML = os.path.join(paths.SQLMAP_XML_PATH, "livetests.xml")
    paths.QUERIES_XML = os.path.join(paths.SQLMAP_XML_PATH, "queries.xml")
    paths.GENERIC_XML = os.path.join(paths.SQLMAP_XML_BANNER_PATH, "generic.xml")
    paths.MSSQL_XML = os.path.join(paths.SQLMAP_XML_BANNER_PATH, "mssql.xml")
    paths.MYSQL_XML = os.path.join(paths.SQLMAP_XML_BANNER_PATH, "mysql.xml")
    paths.ORACLE_XML = os.path.join(paths.SQLMAP_XML_BANNER_PATH, "oracle.xml")
    paths.PGSQL_XML = os.path.join(paths.SQLMAP_XML_BANNER_PATH, "postgresql.xml")

def weAreFrozen():
    """
    Returns whether we are frozen via py2exe.
    This will affect how we find out where we are located.
    Reference: http://www.py2exe.org/index.cgi/WhereAmI
    """

    return hasattr(sys, "frozen")

def parseTargetDirect():
    """
    Parse target dbms and set some attributes into the configuration singleton.
    """

    if not conf.direct:
        return

    details = None
    remote = False

    for dbms in SUPPORTED_DBMS:
        details = re.search("^(?P<dbms>%s)://(?P<credentials>(?P<user>.+?)\:(?P<pass>.*)\@)?(?P<remote>(?P<hostname>.+?)\:(?P<port>[\d]+)\/)?(?P<db>[\w\d\ \:\.\_\-\/\\\\]+?)$" % dbms, conf.direct, re.I)

        if details:
            conf.dbms = details.group('dbms')

            if details.group('credentials'):
                conf.dbmsUser = details.group('user')
                conf.dbmsPass = details.group('pass')
            else:
                conf.dbmsUser = unicode()
                conf.dbmsPass = unicode()

            if not conf.dbmsPass:
                conf.dbmsPass = None

            if details.group('remote'):
                remote = True
                conf.hostname = details.group('hostname')
                conf.port = int(details.group('port'))
            else:
                conf.hostname = "localhost"
                conf.port = 0

            conf.dbmsDb = details.group('db')

            conf.parameters[None] = "direct connection"

            break

    if not details:
        errMsg = "invalid target details, valid syntax is for instance "
        errMsg += "'mysql://USER:PASSWORD@DBMS_IP:DBMS_PORT/DATABASE_NAME' "
        errMsg += "or 'access://DATABASE_FILEPATH'"
        raise SqlmapSyntaxException, errMsg

    for dbmsName, data in DBMS_DICT.items():
        if conf.dbms in data[0]:
            try:
                if dbmsName in (DBMS.ACCESS, DBMS.SQLITE, DBMS.FIREBIRD):
                    if remote:
                        warnMsg = "direct connection over the network for "
                        warnMsg += "%s DBMS is not supported" % dbmsName
                        logger.warn(warnMsg)

                        conf.hostname = "localhost"
                        conf.port = 0
                elif not remote:
                        errMsg = "missing remote connection details"
                        raise SqlmapSyntaxException, errMsg

                if dbmsName in (DBMS.MSSQL, DBMS.SYBASE):
                    import _mssql
                    import pymssql

                    if not hasattr(pymssql, "__version__") or pymssql.__version__ < "1.0.2":
                        errMsg = "'%s' third-party library must be " % data[1]
                        errMsg += "version >= 1.0.2 to work properly. "
                        errMsg += "Download from '%s'" % data[2]
                        raise SqlmapMissingDependence, errMsg

                elif dbmsName == DBMS.MYSQL:
                    import pymysql
                elif dbmsName == DBMS.PGSQL:
                    import psycopg2
                elif dbmsName == DBMS.ORACLE:
                    import cx_Oracle
                elif dbmsName == DBMS.SQLITE:
                    import sqlite3
                elif dbmsName == DBMS.ACCESS:
                    import pyodbc
                elif dbmsName == DBMS.FIREBIRD:
                    import kinterbasdb
            except ImportError:
                errMsg = "sqlmap requires '%s' third-party library " % data[1]
                errMsg += "in order to directly connect to the database "
                errMsg += "%s. Download from '%s'" % (dbmsName, data[2])
                raise SqlmapMissingDependence, errMsg

def parseTargetUrl():
    """
    Parse target url and set some attributes into the configuration singleton.
    """

    if not conf.url:
        return

    originalUrl = conf.url

    if re.search("\[.+\]", conf.url) and not socket.has_ipv6:
        errMsg = "IPv6 addressing is not supported "
        errMsg += "on this platform"
        raise SqlmapGenericException, errMsg

    if not re.search("^http[s]*://", conf.url, re.I):
        if ":443/" in conf.url:
            conf.url = "https://" + conf.url
        else:
            conf.url = "http://" + conf.url

    if CUSTOM_INJECTION_MARK_CHAR in conf.url:
        conf.url = conf.url.replace('?', URI_QUESTION_MARKER)

    urlSplit = urlparse.urlsplit(conf.url)
    hostnamePort = urlSplit[1].split(":") if not re.search("\[.+\]", urlSplit[1]) else filter(None, (re.search("\[.+\]", urlSplit[1]).group(0), re.search("\](:(?P<port>\d+))?", urlSplit[1]).group("port")))

    conf.scheme = urlSplit[0].strip().lower() if not conf.forceSSL else "https"
    conf.path = urlSplit[2].strip()
    conf.hostname = hostnamePort[0].strip()

    conf.ipv6 = conf.hostname != conf.hostname.strip("[]")
    conf.hostname = conf.hostname.strip("[]")

    try:
        _ = conf.hostname.encode("idna")
    except UnicodeError:
        _ = None

    if any((_ is None, re.search(r'\s', conf.hostname), '..' in conf.hostname, conf.hostname.startswith('.'))):
        errMsg = "invalid target url"
        raise SqlmapSyntaxException, errMsg

    if len(hostnamePort) == 2:
        try:
            conf.port = int(hostnamePort[1])
        except:
            errMsg = "invalid target url"
            raise SqlmapSyntaxException, errMsg
    elif conf.scheme == "https":
        conf.port = 443
    else:
        conf.port = 80

    if urlSplit[3]:
        conf.parameters[PLACE.GET] = urldecode(urlSplit[3]) if urlSplit[3] and urlencode(DEFAULT_GET_POST_DELIMITER, None) not in urlSplit[3] else urlSplit[3]

    conf.url = getUnicode("%s://%s:%d%s" % (conf.scheme, ("[%s]" % conf.hostname) if conf.ipv6 else conf.hostname, conf.port, conf.path))
    conf.url = conf.url.replace(URI_QUESTION_MARKER, '?')

    if not conf.referer and intersect(REFERER_ALIASES, conf.testParameter, True):
        debugMsg = "setting the HTTP Referer header to the target url"
        logger.debug(debugMsg)
        conf.httpHeaders = filter(lambda (key, value): key != HTTPHEADER.REFERER, conf.httpHeaders)
        conf.httpHeaders.append((HTTPHEADER.REFERER, conf.url))

    if not conf.host and intersect(HOST_ALIASES, conf.testParameter, True):
        debugMsg = "setting the HTTP Host header to the target url"
        logger.debug(debugMsg)
        conf.httpHeaders = filter(lambda (key, value): key != HTTPHEADER.HOST, conf.httpHeaders)
        conf.httpHeaders.append((HTTPHEADER.HOST, getHostHeader(conf.url)))

    if originalUrl != conf.url:
        kb.originalUrls[conf.url] = originalUrl

def expandAsteriskForColumns(expression):
    """
    If the user provided an asterisk rather than the column(s)
    name, sqlmap will retrieve the columns itself and reprocess
    the SQL query string (expression)
    """

    asterisk = re.search("^SELECT\s+\*\s+FROM\s+([\w\.\_]+)\s*", expression, re.I)

    if asterisk:
        infoMsg = "you did not provide the fields in your query. "
        infoMsg += "sqlmap will retrieve the column names itself"
        logger.info(infoMsg)

        dbTbl = asterisk.group(1)

        if dbTbl and ".." in dbTbl:
            dbTbl = dbTbl.replace('..', '.dbo.')

        if dbTbl and "." in dbTbl:
            conf.db, conf.tbl = dbTbl.split(".", 1)
        else:
            conf.tbl = dbTbl

        columnsDict = conf.dbmsHandler.getColumns(onlyColNames=True)

        if columnsDict and conf.db in columnsDict and conf.tbl in columnsDict[conf.db]:
            columns = columnsDict[conf.db][conf.tbl].keys()
            columns.sort()
            columnsStr = ", ".join(column for column in columns)
            expression = expression.replace("*", columnsStr, 1)

            infoMsg = "the query with column names is: "
            infoMsg += "%s" % expression
            logger.info(infoMsg)

    return expression

def getLimitRange(count, dump=False, plusOne=False):
    """
    Returns range of values used in limit/offset constructs
    """

    retVal = None
    count = int(count)
    limitStart, limitStop = 1, count

    if dump:
        if isinstance(conf.limitStop, int) and conf.limitStop > 0 and conf.limitStop < limitStop:
            limitStop = conf.limitStop

        if isinstance(conf.limitStart, int) and conf.limitStart > 0 and conf.limitStart <= limitStop:
            limitStart = conf.limitStart

    retVal = xrange(limitStart, limitStop + 1) if plusOne else xrange(limitStart - 1, limitStop)

    return retVal

def parseUnionPage(page):
    """
    Returns resulting items from UNION query inside provided page content
    """

    if page is None:
        return None

    if page.startswith(kb.chars.start) and page.endswith(kb.chars.stop):
        if len(page) > LARGE_OUTPUT_THRESHOLD:
            warnMsg = "large output detected. This might take a while"
            logger.warn(warnMsg)

        data = BigArray()
        keys = set()

        for match in re.finditer("%s(.*?)%s" % (kb.chars.start, kb.chars.stop), page, re.DOTALL | re.IGNORECASE):
            entry = match.group(1)

            if kb.chars.start in entry:
                entry = entry.split(kb.chars.start)[-1]

            if kb.unionDuplicates:
                key = entry.lower()
                if key not in keys:
                    keys.add(key)
                else:
                    continue

            entry = entry.split(kb.chars.delimiter)

            if conf.hexConvert:
                entry = applyFunctionRecursively(entry, decodeHexValue)

            if kb.safeCharEncode:
                entry = applyFunctionRecursively(entry, safecharencode)

            data.append(entry[0] if len(entry) == 1 else entry)
    else:
        data = page

    if len(data) == 1 and isinstance(data[0], basestring):
        data = data[0]

    return data

def parseFilePaths(page):
    """
    Detects (possible) absolute system paths inside the provided page content
    """

    if page:
        for regex in (r" in <b>(?P<result>.*?)</b> on line", r"(?:>|\s)(?P<result>[A-Za-z]:[\\/][\w.\\/]*)", r"(?:>|\s)(?P<result>/\w[/\w.]+)"):
            for match in re.finditer(regex, page):
                absFilePath = match.group("result").strip()
                page = page.replace(absFilePath, "")

                if isWindowsDriveLetterPath(absFilePath):
                    absFilePath = posixToNtSlashes(absFilePath)

                if absFilePath not in kb.absFilePaths:
                    kb.absFilePaths.add(absFilePath)

def getLocalIP():
    retVal = None

    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((conf.hostname, conf.port))
        retVal, _ = s.getsockname()
        s.close()
    except:
        debugMsg = "there was an error in opening socket "
        debugMsg += "connection toward '%s'" % conf.hostname
        logger.debug(debugMsg)

    return retVal

def getRemoteIP():
    return socket.gethostbyname(conf.hostname)

def getFileType(filePath):
    try:
        _ = magic.from_file(filePath)
    except:
        return "unknown"

    return "text" if "ASCII" in _ or "text" in _ else "binary"

def getCharset(charsetType=None):
    asciiTbl = []

    if charsetType is None:
        asciiTbl.extend(xrange(0, 128))

    # 0 or 1
    elif charsetType == CHARSET_TYPE.BINARY:
        asciiTbl.extend([0, 1])
        asciiTbl.extend(xrange(47, 50))

    # Digits
    elif charsetType == CHARSET_TYPE.DIGITS:
        asciiTbl.extend([0, 1])
        asciiTbl.extend(xrange(47, 58))

    # Hexadecimal
    elif charsetType == CHARSET_TYPE.HEXADECIMAL:
        asciiTbl.extend([0, 1])
        asciiTbl.extend(xrange(47, 58))
        asciiTbl.extend(xrange(64, 71))
        asciiTbl.extend([87, 88])  # X
        asciiTbl.extend(xrange(96, 103))
        asciiTbl.extend([119, 120])  # x

    # Characters
    elif charsetType == CHARSET_TYPE.ALPHA:
        asciiTbl.extend([0, 1])
        asciiTbl.extend(xrange(64, 91))
        asciiTbl.extend(xrange(96, 123))

    # Characters and digits
    elif charsetType == CHARSET_TYPE.ALPHANUM:
        asciiTbl.extend([0, 1])
        asciiTbl.extend(xrange(47, 58))
        asciiTbl.extend(xrange(64, 91))
        asciiTbl.extend(xrange(96, 123))

    return asciiTbl

def searchEnvPath(filename):
    retVal = None
    path = os.environ.get("PATH", "")
    paths = path.split(";") if IS_WIN else path.split(":")

    for _ in paths:
        _ = _.replace(";", "")
        retVal = os.path.exists(os.path.normpath(os.path.join(_, filename)))

        if retVal:
            break

    return retVal

def directoryPath(filepath):
    """
    Returns directory path for a given filepath
    """

    retVal = filepath

    if filepath:
        retVal = ntpath.dirname(filepath) if isWindowsDriveLetterPath(filepath) else posixpath.dirname(filepath)

    return retVal

def normalizePath(filepath):
    """
    Returns normalized string representation of a given filepath
    """

    retVal = filepath

    if filepath:
        retVal = ntpath.normpath(filepath) if isWindowsDriveLetterPath(filepath) else posixpath.normpath(filepath)

    return retVal

def safeStringFormat(format_, params):
    """
    Avoids problems with inappropriate string format strings
    """

    retVal = format_.replace("%d", "%s")

    if isinstance(params, basestring):
        retVal = retVal.replace("%s", params)
    else:
        count, index = 0, 0
        while index != -1:
            index = retVal.find("%s")
            if index != -1:
                if count < len(params):
                    retVal = retVal[:index] + getUnicode(params[count]) + retVal[index + 2:]
                else:
                    raise SqlmapNoneDataException, "wrong number of parameters during string formatting"
                count += 1

    return retVal

def getFilteredPageContent(page, onlyText=True):
    """
    Returns filtered page content without script, style and/or comments
    or all HTML tags
    """

    retVal = page

    # only if the page's charset has been successfully identified
    if isinstance(page, unicode):
        retVal = re.sub(r"(?si)<script.+?</script>|<!--.+?-->|<style.+?</style>%s" % (r"|<[^>]+>|\t|\n|\r" if onlyText else ""), " ", page)
        while retVal.find("  ") != -1:
            retVal = retVal.replace("  ", " ")
        retVal = htmlunescape(retVal)

    return retVal

def getPageWordSet(page):
    """
    Returns word set used in page content
    """

    retVal = set()

    # only if the page's charset has been successfully identified
    if isinstance(page, unicode):
        _ = getFilteredPageContent(page)
        retVal = set(re.findall(r"\w+", _))

    return retVal

def showStaticWords(firstPage, secondPage):
    infoMsg = "finding static words in longest matching part of dynamic page content"
    logger.info(infoMsg)

    firstPage = getFilteredPageContent(firstPage)
    secondPage = getFilteredPageContent(secondPage)

    infoMsg = "static words: "

    if firstPage and secondPage:
        match = SequenceMatcher(None, firstPage, secondPage).find_longest_match(0, len(firstPage), 0, len(secondPage))
        commonText = firstPage[match[0]:match[0] + match[2]]
        commonWords = getPageWordSet(commonText)
    else:
        commonWords = None

    if commonWords:
        commonWords = list(commonWords)
        commonWords.sort(lambda a, b: cmp(a.lower(), b.lower()))

        for word in commonWords:
            if len(word) > 2:
                infoMsg += "'%s', " % word

        infoMsg = infoMsg.rstrip(", ")
    else:
        infoMsg += "None"

    logger.info(infoMsg)

def isWindowsPath(filepath):
    """
    Returns True if given filepath is in Windows format
    """

    return re.search("\A[\w]\:\\\\", filepath) is not None

def isWindowsDriveLetterPath(filepath):
    """
    Returns True if given filepath starts with a Windows drive letter
    """

    return re.search("\A[\w]\:", filepath) is not None

def posixToNtSlashes(filepath):
    """
    Replaces all occurances of Posix slashes (/) in provided
    filepath with NT ones (/)

    >>> posixToNtSlashes('C:/Windows')
    'C:\\\\Windows'
    """

    return filepath.replace('/', '\\')

def ntToPosixSlashes(filepath):
    """
    Replaces all occurances of NT slashes (\) in provided
    filepath with Posix ones (/)

    >>> ntToPosixSlashes('C:\\Windows')
    'C:/Windows'
    """

    return filepath.replace('\\', '/')

def isBase64EncodedString(subject):
    """
    Checks if the provided string is Base64 encoded

    >>> isBase64EncodedString('dGVzdA==')
    True
    >>> isBase64EncodedString('123456')
    False
    """

    return re.match(r"\A(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?\Z", subject) is not None

def isHexEncodedString(subject):
    """
    Checks if the provided string is hex encoded

    >>> isHexEncodedString('DEADBEEF')
    True
    >>> isHexEncodedString('test')
    False
    """

    return re.match(r"\A[0-9a-fA-Fx]+\Z", subject) is not None

def getConsoleWidth(default=80):
    """
    Returns console width
    """

    width = None

    if os.getenv("COLUMNS", "").isdigit():
        width = int(os.getenv("COLUMNS"))
    else:
        output=execute('stty size', shell=True, stdout=PIPE, stderr=PIPE).stdout.read()
        items = output.split()

        if len(items) == 2 and items[1].isdigit():
            width = int(items[1])

    if width is None:
        try:
            import curses

            stdscr = curses.initscr()
            _, width = stdscr.getmaxyx()
            curses.endwin()
        except:
            pass

    return width or default

def clearConsoleLine(forceOutput=False):
    """
    Clears current console line
    """

    if getattr(LOGGER_HANDLER, "is_tty", False):
        dataToStdout("\r%s\r" % (" " * (getConsoleWidth() - 1)), forceOutput)

    kb.prependFlag = False
    kb.stickyLevel = None

def parseXmlFile(xmlFile, handler):
    """
    Parses XML file by a give…