56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
"""
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filters.py - misc stuff for handling LDAP filter strings (see RFC2254)
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See http://www.python-ldap.org/ for details.
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\$Id: filter.py,v 1.10 2015/06/06 09:21:37 stroeder Exp $
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Compability:
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- Tested with Python 2.0+
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"""
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from ldap import __version__
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def escape_filter_chars(assertion_value,escape_mode=0):
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"""
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Replace all special characters found in assertion_value
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by quoted notation.
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escape_mode
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If 0 only special chars mentioned in RFC 4515 are escaped.
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If 1 all NON-ASCII chars are escaped.
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If 2 all chars are escaped.
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"""
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if escape_mode:
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r = []
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if escape_mode==1:
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for c in assertion_value:
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if c < '0' or c > 'z' or c in "\\*()":
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c = "\\%02x" % ord(c)
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r.append(c)
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elif escape_mode==2:
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for c in assertion_value:
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r.append("\\%02x" % ord(c))
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else:
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raise ValueError('escape_mode must be 0, 1 or 2.')
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s = ''.join(r)
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else:
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s = assertion_value.replace('\\', r'\5c')
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s = s.replace(r'*', r'\2a')
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s = s.replace(r'(', r'\28')
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s = s.replace(r')', r'\29')
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s = s.replace('\x00', r'\00')
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return s
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def filter_format(filter_template,assertion_values):
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"""
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filter_template
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String containing %s as placeholder for assertion values.
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assertion_values
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List or tuple of assertion values. Length must match
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count of %s in filter_template.
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"""
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return filter_template % (tuple(map(escape_filter_chars,assertion_values)))
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