dns :: rdata :: Rdata :: Class Rdata

Class Rdata

object --+
         |
        Rdata

Known Subclasses:

Base class for all DNS rdata types.

Instance Methods

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__eq__(self, other)

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__ge__(self, other)

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__gt__(self, other)

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__hash__(self)
hash(x)

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__init__(self, rdclass, rdtype)
Initialize an rdata.

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__le__(self, other)

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__lt__(self, other)

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__ne__(self, other)

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__repr__(self)
repr(x)

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__str__(self)
str(x)

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_cmp(self, other)
Compare an rdata with another rdata of the same rdtype and rdclass.

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choose_relativity(self, origin=None, relativize=True)
Convert any domain names in the rdata to the specified relativization.

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int

covers(self)
DNS SIG/RRSIG rdatas apply to a specific type; this type is returned by the covers() function.

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int

extended_rdatatype(self)
Return a 32-bit type value, the least significant 16 bits of which are the ordinary DNS type, and the upper 16 bits of which are the "covered" type, if any.

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to_digestable(self, origin=None)
Convert rdata to a format suitable for digesting in hashes.

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string

to_text(self, origin=None, relativize=True, **kw)
Convert an rdata to text format.

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string

to_wire(self, file, compress=None, origin=None)
Convert an rdata to wire format.

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validate(self)
Check that the current contents of the rdata's fields are valid.

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Inherited from object: __delattr__, __format__, __getattribute__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Class Methods

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dns.rdata.Rdata instance

from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True)
Build an rdata object from text format.

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dns.rdata.Rdata instance

from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None)
Build an rdata object from wire format

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Properties

[hide private]

rdclass

rdtype

Inherited from object: __class__

Method Details

[hide private]

hash(self)
(Hashing function)

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hash(x)

Overrides: object.__hash__: (inherited documentation)

init(self, rdclass, rdtype)
(Constructor)

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Initialize an rdata.

Parameters:

rdclass (int) - The rdata class
rdtype (int) - The rdata type

Overrides: object.__init__

repr(self)
(Representation operator)

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repr(x)

Overrides: object.__repr__: (inherited documentation)

str(self)
(Informal representation operator)

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str(x)

Overrides: object.__str__: (inherited documentation)

_cmp(self, other)

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Compare an rdata with another rdata of the same rdtype and rdclass. Return < 0 if self < other in the DNSSEC ordering, 0 if self == other, and > 0 if self > other.

covers(self)

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DNS SIG/RRSIG rdatas apply to a specific type; this type is returned by the covers() function. If the rdata type is not SIG or RRSIG, dns.rdatatype.NONE is returned. This is useful when creating rdatasets, allowing the rdataset to contain only RRSIGs of a particular type, e.g. RRSIG(NS).

Returns: int

from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True)
Class Method

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Build an rdata object from text format.

Parameters:

rdclass (int) - The rdata class
rdtype (int) - The rdata type
tok (dns.tokenizer.Tokenizer) - The tokenizer
origin (dns.name.Name) - The origin to use for relative names
relativize (bool) - should names be relativized?

Returns: dns.rdata.Rdata instance

from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None)
Class Method

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Build an rdata object from wire format

Parameters:

rdclass (int) - The rdata class
rdtype (int) - The rdata type
wire (string) - The wire-format message
current (int) - The offset in wire of the beginning of the rdata.
rdlen (int) - The length of the wire-format rdata
origin (dns.name.Name) - The origin to use for relative names

Returns: dns.rdata.Rdata instance

to_digestable(self, origin=None)

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Convert rdata to a format suitable for digesting in hashes. This is also the DNSSEC canonical form.

validate(self)

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Check that the current contents of the rdata's fields are valid. If you change an rdata by assigning to its fields, it is a good idea to call validate() when you are done making changes.

Class Rdata

__hash__(self) (Hashing function)

__init__(self, rdclass, rdtype) (Constructor)

__repr__(self) (Representation operator)

__str__(self) (Informal representation operator)

_cmp(self, other)

covers(self)

from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True) Class Method

from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None) Class Method

to_digestable(self, origin=None)

validate(self)

hash(self)
(Hashing function)

init(self, rdclass, rdtype)
(Constructor)

repr(self)
(Representation operator)

str(self)
(Informal representation operator)

from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True)
Class Method

from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None)
Class Method