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#!/usr/bin/env python
"""
Copyright (c) 2006-2025 sqlmap developers (https://sqlmap.org)
See the file 'LICENSE' for copying permission
"""
from lib.core.compat import xrange
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.LOW
def dependencies():
pass
def tamper(payload, **kwargs):
"""
Replaces (MySQL) instances of space character (' ') with comments '/**_**/'
Tested against:
* MySQL 5.0 and 5.5
Notes:
* Useful to bypass weak and bespoke web application firewalls
>>> tamper('SELECT id FROM users')
'SELECT/**_**/id/**_**/FROM/**_**/users'
"""
retVal = payload
if payload:
retVal = ""
quote, doublequote, firstspace = False, False, False
for i in xrange(len(payload)):
if not firstspace:
if payload[i].isspace():
firstspace = True
retVal += "/**_**/"
continue
elif payload[i] == '\'':
quote = not quote
elif payload[i] == '"':
doublequote = not doublequote
elif payload[i] == " " and not doublequote and not quote:
retVal += "/**_**/"
continue
retVal += payload[i]
return retVal
|
