sqlmap/plugins/dbms/mysql/syntax.py
2011-04-15 12:33:18 +00:00

74 lines
2.1 KiB
Python

#!/usr/bin/env python
"""
$Id$
Copyright (c) 2006-2011 sqlmap developers (http://sqlmap.sourceforge.net/)
See the file 'doc/COPYING' for copying permission
"""
from lib.core.exception import sqlmapSyntaxException
from plugins.generic.syntax import Syntax as GenericSyntax
class Syntax(GenericSyntax):
def __init__(self):
GenericSyntax.__init__(self)
@staticmethod
def unescape(expression, quote=True):
if quote:
while True:
index = expression.find("'")
if index == -1:
break
firstIndex = index + 1
index = expression[firstIndex:].find("'")
if index == -1:
raise sqlmapSyntaxException, "Unenclosed ' in '%s'" % expression
lastIndex = firstIndex + index
old = "'%s'" % expression[firstIndex:lastIndex]
unescaped = ""
for i in range(firstIndex, lastIndex):
unescaped += "%d" % (ord(expression[i]))
if i < lastIndex - 1:
unescaped += ","
expression = expression.replace(old, "CHAR(%s)" % unescaped)
else:
unescaped = "CHAR("
unescaped += ",".join("%d" % ord(c) for c in expression)
unescaped += ")"
expression = unescaped
return expression
@staticmethod
def escape(expression):
while True:
index = expression.find("CHAR(")
if index == -1:
break
firstIndex = index
index = expression[firstIndex:].find(")")
if index == -1:
raise sqlmapSyntaxException, "Unenclosed ) in '%s'" % expression
lastIndex = firstIndex + index + 1
old = expression[firstIndex:lastIndex]
oldUpper = old.upper()
oldUpper = oldUpper.lstrip("CHAR(").rstrip(")")
oldUpper = oldUpper.split(",")
escaped = "'%s'" % "".join([chr(int(char)) for char in oldUpper])
expression = expression.replace(old, escaped)
return expression