#!/usr/bin/env python

"""

Copyright (c) 2006-2021 sqlmap developers (https://sqlmap.org/)

See the file 'LICENSE' for copying permission

"""

import re

from lib.core.enums import PRIORITY

__priority__ = PRIORITY.HIGHEST

def dependencies():

pass

def tamper(payload, **kwargs):

"""

Replaces all occurrences of operator equal ('=') with 'RLIKE' counterpart

Tested against:

* MySQL 4, 5.0 and 5.5

Notes:

* Useful to bypass weak and bespoke web application firewalls that

filter the equal character ('=')

>>> tamper('SELECT * FROM users WHERE id=1')

'SELECT * FROM users WHERE id RLIKE 1'

"""

retVal = payload

if payload:

retVal = re.sub(r"\s*=\s*", " RLIKE ", retVal)

return retVal