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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 os
import re
from lib.core.common import singleTimeWarnMessage
from lib.core.enums import DBMS
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.HIGH
def dependencies():
singleTimeWarnMessage("tamper script '%s' is only meant to be run against %s" % (os.path.basename(__file__).split(".")[0], DBMS.MYSQL))
def tamper(payload, **kwargs):
"""
Replaces (MySQL) instances like 'LIMIT M, N' with 'LIMIT N OFFSET M' counterpart
Requirement:
* MySQL
Tested against:
* MySQL 5.0 and 5.5
>>> tamper('LIMIT 2, 3')
'LIMIT 3 OFFSET 2'
"""
retVal = payload
match = re.search(r"(?i)LIMIT\s*(\d+),\s*(\d+)", payload or "")
if match:
retVal = retVal.replace(match.group(0), "LIMIT %s OFFSET %s" % (match.group(2), match.group(1)))
return retVal
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