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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.4)
-
- '''DNS Result Codes.'''
- import dns.exception as dns
- NOERROR = 0
- FORMERR = 1
- SERVFAIL = 2
- NXDOMAIN = 3
- NOTIMP = 4
- REFUSED = 5
- YXDOMAIN = 6
- YXRRSET = 7
- NXRRSET = 8
- NOTAUTH = 9
- NOTZONE = 10
- BADVERS = 16
- _by_text = {
- 'NOERROR': NOERROR,
- 'FORMERR': FORMERR,
- 'SERVFAIL': SERVFAIL,
- 'NXDOMAIN': NXDOMAIN,
- 'NOTIMP': NOTIMP,
- 'REFUSED': REFUSED,
- 'YXDOMAIN': YXDOMAIN,
- 'YXRRSET': YXRRSET,
- 'NXRRSET': NXRRSET,
- 'NOTAUTH': NOTAUTH,
- 'NOTZONE': NOTZONE,
- 'BADVERS': BADVERS }
- _by_value = []([ (y, x) for x, y in _by_text.iteritems() ])
-
- class UnknownRcode(dns.exception.DNSException):
- '''Raised if an rcode is unknown.'''
- pass
-
-
- def from_text(text):
- '''Convert text into an rcode.
-
- @param text: the texual rcode
- @type text: string
- @raises UnknownRcode: the rcode is unknown
- @rtype: int
- '''
- if text.isdigit():
- v = int(text)
- if v >= 0 and v <= 4095:
- return v
-
-
- v = _by_text.get(text.upper())
- if v is None:
- raise UnknownRcode
-
- return v
-
-
- def from_flags(flags, ednsflags):
- '''Return the rcode value encoded by flags and ednsflags.
-
- @param flags: the DNS flags
- @type flags: int
- @param ednsflags: the EDNS flags
- @type ednsflags: int
- @raises ValueError: rcode is < 0 or > 4095
- @rtype: int
- '''
- value = flags & 15 | ednsflags >> 20 & 4080
- if value < 0 or value > 4095:
- raise ValueError, 'rcode must be >= 0 and <= 4095'
-
- return value
-
-
- def to_flags(value):
- '''Return a (flags, ednsflags) tuple which encodes the rcode.
-
- @param value: the rcode
- @type value: int
- @raises ValueError: rcode is < 0 or > 4095
- @rtype: (int, int) tuple
- '''
- if value < 0 or value > 4095:
- raise ValueError, 'rcode must be >= 0 and <= 4095'
-
- v = value & 15
- ev = long(value & 4080) << 20
- return (v, ev)
-
-
- def to_text(value):
- '''Convert rcode into text.
-
- @param value: the rcode
- @type value: int
- @rtype: string
- '''
- text = _by_value.get(value)
- if text is None:
- text = str(value)
-
- return text
-
-