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minor fix

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This commit is contained in:
Miroslav Stampar 2012-03-01 10:17:39 +00:00
parent 1ec56f93ec
commit f4e410db16
1 changed files with 8 additions and 2 deletions
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10
lib/techniques/blind/inference.py
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@ -179,7 +179,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
return not result
def getChar(idx, charTbl=asciiTbl, continuousOrder=True, expand=charsetType is None, shiftTable=None):
def getChar(idx, charTbl=None, continuousOrder=True, expand=charsetType is None, shiftTable=None):
"""
continuousOrder means that distance between each two neighbour's
numerical values is exactly 1
@ -190,6 +190,9 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
if result:
return result
if charTbl is None:
charTbl = list(asciiTbl)
originalTbl = list(charTbl)
if continuousOrder and shiftTable is None:
@ -199,7 +202,10 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
if CHAR_INFERENCE_MARK in payload and ord('\n') in charTbl:
charTbl.remove(ord('\n'))
if len(charTbl) == 1:
if not charTbl:
return None
elif len(charTbl) == 1:
forgedPayload = safeStringFormat(payload.replace(INFERENCE_GREATER_CHAR, INFERENCE_EQUALS_CHAR), (expressionUnescaped, idx, charTbl[0]))
result = Request.queryPage(forgedPayload, timeBasedCompare=timeBasedCompare, raise404=False)
incrementCounter(kb.technique)