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26 lines
1016 B
Python
26 lines
1016 B
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2022 sqlmap developers (https://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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from lib.core.convert import getOrds
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from plugins.generic.syntax import Syntax as GenericSyntax
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class Syntax(GenericSyntax):
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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") == "SELECT (CHR(97)||CHR(98)||CHR(99)||CHR(100)||CHR(101)||CHR(102)||CHR(103)||CHR(104)) FROM foobar"
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True
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"""
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def escaper(value):
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return "(%s)" % "||".join("CHR(%d)" % _ for _ in getOrds(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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