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#!/usr/bin/env python
"""
Copyright (c) 2006-2025 sqlmap developers (https://sqlmap.org)
See the file 'LICENSE' for copying permission
"""
import re
from lib.core.common import randomRange
from lib.core.compat import xrange
from lib.core.data import kb
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.LOW
def tamper(payload, **kwargs):
"""
Inserts random inline comments within SQL keywords (e.g. SELECT -> S/**/E/**/LECT)
>>> import random
>>> random.seed(0)
>>> tamper('INSERT')
'I/**/NS/**/ERT'
"""
retVal = payload
if payload:
for match in re.finditer(r"\b[A-Za-z_]+\b", payload):
word = match.group()
if len(word) < 2:
continue
if word.upper() in kb.keywords:
_ = word[0]
for i in xrange(1, len(word) - 1):
_ += "%s%s" % ("/**/" if randomRange(0, 1) else "", word[i])
_ += word[-1]
if "/**/" not in _:
index = randomRange(1, len(word) - 1)
_ = word[:index] + "/**/" + word[index:]
retVal = retVal.replace(word, _)
return retVal
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