mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-28 12:33:49 +03:00
137 lines
5.0 KiB
Python
137 lines
5.0 KiB
Python
|
######################## BEGIN LICENSE BLOCK ########################
|
||
|
|
# The Original Code is Mozilla Universal charset detector code.
|
||
|
|
#
|
||
|
|
# The Initial Developer of the Original Code is
|
||
|
|
# Netscape Communications Corporation.
|
||
|
|
# Portions created by the Initial Developer are Copyright (C) 2001
|
||
|
|
# the Initial Developer. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# Contributor(s):
|
||
|
|
# Mark Pilgrim - port to Python
|
||
|
|
# Shy Shalom - original C code
|
||
|
|
#
|
||
|
|
# This library is free software; you can redistribute it and/or
|
||
|
|
# modify it under the terms of the GNU Lesser General Public
|
||
|
|
# License as published by the Free Software Foundation; either
|
||
|
|
# version 2.1 of the License, or (at your option) any later version.
|
||
|
|
#
|
||
|
|
# This library is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
# Lesser General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU Lesser General Public
|
||
|
|
# License along with this library; if not, write to the Free Software
|
||
|
|
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
||
|
|
# 02110-1301 USA
|
||
|
|
######################### END LICENSE BLOCK #########################
|
||
|
|
|
||
|
|
from charsetprober import CharSetProber
|
||
|
|
import constants
|
||
|
|
import operator
|
||
|
|
|
||
|
|
FREQ_CAT_NUM = 4
|
||
|
|
|
||
|
|
UDF = 0 # undefined
|
||
|
|
OTH = 1 # other
|
||
|
|
ASC = 2 # ascii capital letter
|
||
|
|
ASS = 3 # ascii small letter
|
||
|
|
ACV = 4 # accent capital vowel
|
||
|
|
ACO = 5 # accent capital other
|
||
|
|
ASV = 6 # accent small vowel
|
||
|
|
ASO = 7 # accent small other
|
||
|
|
CLASS_NUM = 8 # total classes
|
||
|
|
|
||
|
|
Latin1_CharToClass = ( \
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 00 - 07
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 08 - 0F
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 10 - 17
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 18 - 1F
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 20 - 27
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 28 - 2F
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 30 - 37
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 38 - 3F
|
||
|
|
OTH, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 40 - 47
|
||
|
|
ASC, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 48 - 4F
|
||
|
|
ASC, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 50 - 57
|
||
|
|
ASC, ASC, ASC, OTH, OTH, OTH, OTH, OTH, # 58 - 5F
|
||
|
|
OTH, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 60 - 67
|
||
|
|
ASS, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 68 - 6F
|
||
|
|
ASS, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 70 - 77
|
||
|
|
ASS, ASS, ASS, OTH, OTH, OTH, OTH, OTH, # 78 - 7F
|
||
|
|
OTH, UDF, OTH, ASO, OTH, OTH, OTH, OTH, # 80 - 87
|
||
|
|
OTH, OTH, ACO, OTH, ACO, UDF, ACO, UDF, # 88 - 8F
|
||
|
|
UDF, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 90 - 97
|
||
|
|
OTH, OTH, ASO, OTH, ASO, UDF, ASO, ACO, # 98 - 9F
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # A0 - A7
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # A8 - AF
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # B0 - B7
|
||
|
|
OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # B8 - BF
|
||
|
|
ACV, ACV, ACV, ACV, ACV, ACV, ACO, ACO, # C0 - C7
|
||
|
|
ACV, ACV, ACV, ACV, ACV, ACV, ACV, ACV, # C8 - CF
|
||
|
|
ACO, ACO, ACV, ACV, ACV, ACV, ACV, OTH, # D0 - D7
|
||
|
|
ACV, ACV, ACV, ACV, ACV, ACO, ACO, ACO, # D8 - DF
|
||
|
|
ASV, ASV, ASV, ASV, ASV, ASV, ASO, ASO, # E0 - E7
|
||
|
|
ASV, ASV, ASV, ASV, ASV, ASV, ASV, ASV, # E8 - EF
|
||
|
|
ASO, ASO, ASV, ASV, ASV, ASV, ASV, OTH, # F0 - F7
|
||
|
|
ASV, ASV, ASV, ASV, ASV, ASO, ASO, ASO, # F8 - FF
|
||
|
|
)
|
||
|
|
|
||
|
|
# 0 : illegal
|
||
|
|
# 1 : very unlikely
|
||
|
|
# 2 : normal
|
||
|
|
# 3 : very likely
|
||
|
|
Latin1ClassModel = ( \
|
||
|
|
# UDF OTH ASC ASS ACV ACO ASV ASO
|
||
|
|
0, 0, 0, 0, 0, 0, 0, 0, # UDF
|
||
|
|
0, 3, 3, 3, 3, 3, 3, 3, # OTH
|
||
|
|
0, 3, 3, 3, 3, 3, 3, 3, # ASC
|
||
|
|
0, 3, 3, 3, 1, 1, 3, 3, # ASS
|
||
|
|
0, 3, 3, 3, 1, 2, 1, 2, # ACV
|
||
|
|
0, 3, 3, 3, 3, 3, 3, 3, # ACO
|
||
|
|
0, 3, 1, 3, 1, 1, 1, 3, # ASV
|
||
|
|
0, 3, 1, 3, 1, 1, 3, 3, # ASO
|
||
|
|
)
|
||
|
|
|
||
|
|
class Latin1Prober(CharSetProber):
|
||
|
|
def __init__(self):
|
||
|
|
CharSetProber.__init__(self)
|
||
|
|
self.reset()
|
||
|
|
|
||
|
|
def reset(self):
|
||
|
|
self._mLastCharClass = OTH
|
||
|
|
self._mFreqCounter = [0] * FREQ_CAT_NUM
|
||
|
|
CharSetProber.reset(self)
|
||
|
|
|
||
|
|
def get_charset_name(self):
|
||
|
|
return "windows-1252"
|
||
|
|
|
||
|
|
def feed(self, aBuf):
|
||
|
|
aBuf = self.filter_with_english_letters(aBuf)
|
||
|
|
for c in aBuf:
|
||
|
|
charClass = Latin1_CharToClass[ord(c)]
|
||
|
|
freq = Latin1ClassModel[(self._mLastCharClass * CLASS_NUM) + charClass]
|
||
|
|
if freq == 0:
|
||
|
|
self._mState = constants.eNotMe
|
||
|
|
break
|
||
|
|
self._mFreqCounter[freq] += 1
|
||
|
|
self._mLastCharClass = charClass
|
||
|
|
|
||
|
|
return self.get_state()
|
||
|
|
|
||
|
|
def get_confidence(self):
|
||
|
|
if self.get_state() == constants.eNotMe:
|
||
|
|
return 0.01
|
||
|
|
|
||
|
|
total = reduce(operator.add, self._mFreqCounter)
|
||
|
|
if total < 0.01:
|
||
|
|
confidence = 0.0
|
||
|
|
else:
|
||
|
|
confidence = (self._mFreqCounter[3] / total) - (self._mFreqCounter[1] * 20.0 / total)
|
||
|
|
if confidence < 0.0:
|
||
|
|
confidence = 0.0
|
||
|
|
# lower the confidence of latin1 so that other more accurate detector
|
||
|
|
# can take priority.
|
||
|
|
confidence = confidence * 0.5
|
||
|
|
return confidence
|