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28 lines
1.0 KiB
Python
28 lines
1.0 KiB
Python
#!/usr/bin/env python2
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"""
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Copyright (c) 2006-2019 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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from plugins.generic.syntax import Syntax as GenericSyntax
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class Syntax(GenericSyntax):
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def __init__(self):
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GenericSyntax.__init__(self)
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@staticmethod
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def escape(expression, quote=True):
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"""
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Note: PostgreSQL has a general problem with concenation operator (||) precedence (hence the parentheses enclosing)
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e.g. SELECT 1 WHERE 'a'!='a'||'b' will trigger error ("argument of WHERE must be type boolean, not type text")
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>>> Syntax.escape("SELECT 'abcdefgh' FROM foobar")
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'SELECT (CHR(97)||CHR(98)||CHR(99)||CHR(100)||CHR(101)||CHR(102)||CHR(103)||CHR(104)) FROM foobar'
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"""
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def escaper(value):
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return "(%s)" % "||".join("CHR(%d)" % ord(_) for _ in value) # Postgres CHR() function already accepts Unicode code point of character(s)
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return Syntax._escape(expression, quote, escaper)
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