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syntax.py
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27 lines (20 loc) · 1.01 KB
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#!/usr/bin/env python
"""
Copyright (c) 2006-2015 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""
from plugins.generic.syntax import Syntax as GenericSyntax
class Syntax(GenericSyntax):
def __init__(self):
GenericSyntax.__init__(self)
@staticmethod
def escape(expression, quote=True):
"""
Note: PostgreSQL has a general problem with concenation operator (||) precedence (hence the parentheses enclosing)
e.g. SELECT 1 WHERE 'a'!='a'||'b' will trigger error ("argument of WHERE must be type boolean, not type text")
>>> Syntax.escape("SELECT 'abcdefgh' FROM foobar")
'SELECT (CHR(97)||CHR(98)||CHR(99)||CHR(100)||CHR(101)||CHR(102)||CHR(103)||CHR(104)) FROM foobar'
"""
def escaper(value):
return "(%s)" % "||".join("CHR(%d)" % ord(_) for _ in value) # Postgres CHR() function already accepts Unicode code point of character(s)
return Syntax._escape(expression, quote, escaper)