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This commit is contained in:
Miroslav Stampar 2010-06-02 15:18:33 +00:00
parent c470255c18
commit bf071d33d2
1 changed files with 4 additions and 2 deletions
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6
lib/techniques/blind/inference.py
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@ -197,14 +197,16 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
if type(charTbl) != xrange: if type(charTbl) != xrange:
charTbl = charTbl[:position] charTbl = charTbl[:position]
else: # xrange - extended set (e.g. Unicode) else:
charTbl = xrange(charTbl[0], charTbl[position]) charTbl = xrange(charTbl[0], charTbl[position])
if len(charTbl) == 1: if len(charTbl) == 1:
if continuousOrder: if continuousOrder:
if maxValue == 1: if maxValue == 1:
return None return None
elif minValue == maxChar: # if we hit the maxChar then extend the working set with xrange (virtual charset used because of memory/space optimization) and continue tests with new set elif minValue == maxChar: # going beyond the original charset
# if the original charTbl was [0,..,127] new one will be [128,..,128*256-1] or from 128 to 32767
# and instead of making a HUGE list with all elements we use here xrange, which is a virtual list
charTbl = xrange(maxChar + 1, (maxChar + 1) << 8) charTbl = xrange(maxChar + 1, (maxChar + 1) << 8)
maxChar = maxValue = charTbl[-1] maxChar = maxValue = charTbl[-1]
minChar = minValue = charTbl[0] minChar = minValue = charTbl[0]