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r/ c C sF t t| �d dd�D ]$}| | dkr| d|d � S q| dd� S )z�Determine the index of greatest byte that isn't all zeros, and
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d �dd�Zd]ee jj eeeef ed�dd�Zd^ee ee jj ee jj eed�dd�Zd_ee ee jj ee jj eed�dd�Zd`ee jj dd �d d �Zdaee jj ed �d d �Z d!d"� Z d#d$� Z d%d&� Z d'd(� Z d)d*� Z!d+d,� Z"d-d.� Z#d/d0� Z$d1d2� Z%d3d4� Z&e'dbe j(j)e j
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j e j-j.ee jj d d8�d9d:��Z/ed d;�d<d=�Z0e'd>d?� �Z1e'd@dA� �Z2e'ddeeee
eedB�dCdD��Z3e'dEdF� �Z4e'dGdH� �Z5e'dIdJ� �Z6e'dKdL� �Z7e'dMdN� �Z8e'dedOdP��Z9e'dQdR� �Z:e'dSdT� �Z;e'dUdV� �Z<e'dWdX� �Z=e'dYdZ� �Z>e'd[d\� �Z?dS )f�Rdataz#Base class for all DNS rdata types.)�rdclass�rdtype� rdcommentc C s" | � |�| _| �|�| _d| _dS )z�Initialize an rdata.
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_as_rdatatyper5 r6 )�selfr4 r5 r r r �__init__� s zRdata.__init__c C s t j�dd� | jjD ��S )Nc s s | ]}t |d g �V qdS )� __slots__N)�getattr)r �clsr r r � <genexpr>� s z'Rdata._get_all_slots.<locals>.<genexpr>)� itertools�chain�
from_iterable� __class__�__mro__�r9 r r r �_get_all_slots� s �zRdata._get_all_slotsc C s$ i }| � � D ]}t| |�||< q |S �N)rE r< )r9 �state�slotr r r � __getstate__� s zRdata.__getstate__c C s< |� � D ]\}}t�| ||� qt| d�s8t�| dd � d S )Nr6 )�items�object� __setattr__�hasattr)r9 rG rH �valr r r � __setstate__� s
zRdata.__setstate__)�returnc C s t jjS )a� Return the type a Rdata covers.
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).
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)�dns� rdatatype�NONErD r r r �covers� s z Rdata.coversc C s | � � d> | jB S )z�Return a 32-bit type value, the least significant 16 bits of
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� )rT r5 rD r r r �extended_rdatatype� s zRdata.extended_rdatatypeNT��origin�
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to_generic� s �zRdata.to_genericc C s | j |dd�S )z�Convert rdata to a format suitable for digesting in hashes. This
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to_digestable� s zRdata.to_digestablec C sf | � � }|tjjkrd}ndtj�|� d }dtj�| j� d tj�| j� | d t| � d S )Nr$ �(�)z<DNS � z rdata: �>) rT rQ rR rS r] �
rdataclassr4 r5 r( )r9 rT Zctextr r r �__repr__ s( �� ������zRdata.__repr__c C s | � � S rF )r] rD r r r �__str__ s z
Rdata.__str__c C s� z| � � }d}W n, tjjy< tr4| � tjj�}d}Y n0 z|� � }d}W n, tjjyz trr|� tjj�}d}Y n0 tr�||kr�|r�dS dS n |s�|r�t�||kr�dS ||kr�dS dS dS )a Compare an rdata with another rdata of the same rdtype and
rdclass.
For rdata with only absolute names:
Return < 0 if self < other in the DNSSEC ordering, 0 if self
== other, and > 0 if self > other.
For rdata with at least one relative names:
The rdata sorts before any rdata with only absolute names.
When compared with another relative rdata, all names are
made absolute as if they were relative to the root, as the
proper origin is not available. While this creates a stable
ordering, it is NOT guaranteed to be the DNSSEC ordering.
In the future, all ordering comparisons for rdata with
relative names will be disallowed.
FTr1 r0 r N)rl rQ �name�NeedAbsoluteNameOrOrigin�_allow_relative_comparisons�rootr )r9 �other�our� our_relative�their�their_relativer r r �_cmp s4
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z Rdata.__ne__c C s4 t |t�r"| j|jks"| j|jkr&tS | �|�dk S �Nr �r' r3 r4 r5 �NotImplementedr} r r r r �__lt__b s �
�
�z Rdata.__lt__c C s4 t |t�r"| j|jks"| j|jkr&tS | �|�dkS r� r� r r r r �__le__k s �
�
�z Rdata.__le__c C s4 t |t�r"| j|jks"| j|jkr&tS | �|�dkS r� r� r r r r �__ge__t s �
�
�z Rdata.__ge__c C s4 t |t�r"| j|jks"| j|jkr&tS | �|�dkS r� r� r r r r �__gt__} s �
�
�z Rdata.__gt__c C s t | �tjj��S rF )�hashrl rQ rt rw rD r r r �__hash__� s zRdata.__hash__)r4 r5 �tokrX rY �
relativize_torP c C s t �d S rF rZ )r= r4 r5 r� rX rY r� r r r � from_text� s
zRdata.from_text�r4 r5 �parserrX rP c C s t �d S rF rZ �r= r4 r5 r� rX r r r �from_wire_parser� s zRdata.from_wire_parser)�kwargsrP c s� t ��j�j}� D ]F}|dkr q||vr<td��jj|���|dv rtd��jj|���q� �fdd�|D �}�j|� }� �d�j �}|dur�t
� |d|� |S )a�
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invoked on. It is possible to pass different parameters to
override the corresponding properties of the base Rdata.
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*rdtype* and *rdclass* fields cannot.
Returns an instance of the same Rdata subclass as *self*.
r6 z!'{}' object has no attribute '{}'�r4 r5 z$Cannot overwrite '{}' attribute '{}'c 3 s | ]}� � |t�|��V qd S rF )�getr< )r �key�r� r9 r r r> � r z Rdata.replace.<locals>.<genexpr>N) �inspectZ signaturer: �
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RdataClass�make�r= �valuer r r r7 � s zRdata._as_rdataclassc C s t jj�|�S rF )rQ rR � RdataTyper� r� r r r r8 � s zRdata._as_rdatatype)r� r) �
max_length�empty_okrP c C s| |rt |t�r|�� }n,t |t�r,t|�}nt |t�r<|}ntd��|d ur`t|�|kr`td��|sxt|�dkrxtd��|S )Nz not bytesztoo longr zempty bytes not allowed)r' r( r) r* �bytes�
ValueErrorr )r= r� r) r� r� Zbvaluer r r � _as_bytes� s
zRdata._as_bytesc C s0 t |t�rtj�|�S t |tjj�s,td��|S )Nz
not a name)r' r( rQ rt r� �Namer� r� r r r �_as_name� s
zRdata._as_namec C s. t |t�std��|dk s"|dkr*td��|S )N�not an integerr � z not a uint8�r' �intr� r� r r r � _as_uint8� s
zRdata._as_uint8c C s. t |t�std��|dk s"|dkr*td��|S )Nr� r i�� z not a uint16r� r� r r r �
_as_uint16 s
zRdata._as_uint16c C s. t |t�std��|dk s"|dkr*td��|S )Nr� r l �� z not a uint32r� r� r r r �
_as_uint32 s
zRdata._as_uint32c C s. t |t�std��|dk s"|dkr*td��|S )Nr� r l ��� z not a uint48r� r� r r r �
_as_uint48 s
zRdata._as_uint48c C sF t |t�std��|d ur*||k r*td��|d urB||krBtd��|S )Nr� zvalue too smallzvalue too larger� )r= r� ZlowZhighr r r �_as_int s
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Rdata._as_intc C s8 t |t�rtj�|�S t |t�r,tj�|�S td��d S )Nznot an IPv4 address)r' r( rQ Zipv4r` r� � inet_ntoar� r� r r r �_as_ipv4_address# s
zRdata._as_ipv4_addressc C s8 t |t�rtj�|�S t |t�r,tj�|�S td��d S )Nznot an IPv6 address)r' r( rQ Zipv6r` r� r� r� r� r r r �_as_ipv6_address, s
zRdata._as_ipv6_addressc C s t |t�r|S td��d S )Nz
not a boolean)r' �boolr� r� r r r �_as_bool5 s
zRdata._as_boolc C s> t |t�r | �|dtjj�S t |t�r2tj�|�S td��d S )Nr z not a TTL) r' r� r� rQ ZttlZMAX_TTLr( r� r� r� r r r �_as_ttl< s
z
Rdata._as_ttlc s: z � |�fW S t y4 t� fdd�|D �� Y S 0 d S )Nc 3 s | ]}� |�V qd S rF r )r �v��as_valuer r r> N r z"Rdata._as_tuple.<locals>.<genexpr>)� Exception�tuple)r= r� r� r r� r � _as_tupleE s zRdata._as_tuplec C s t |�}t�|� |S rF )�list�randomZshuffle)r= �iterablerJ r r r �_processing_orderR s
zRdata._processing_order)NT)NNF)NNNF)N)N)NTN)N)FNT)NN)@r
r r r
r; r: rE rI rO rQ rR r� rT r� rV r rt r� r� r r( r r] Z CompressTyper� rb rg rk rl rr rs r} r~ r� r� r� r� r� r� � classmethodrq r� � tokenizer� Tokenizerr� �wire�Parserr� r� r7 r8 r� r� r� r� r� r� r� r� r� r� r� r� r� r r r r r3 � s� �
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d�Zeddd��Z� ZS )ri z�Generic Rdata Class
This class is used for rdata types for which we have no better
implementation. It implements the DNS "unknown RRs" scheme.
r c s t � �||� || _d S rF )�superr: r )r9 r4 r5 r �rB r r r: c s zGenericRdata.__init__NTrW c K s dt | j� t| jfi |�� S )Nz\# %d )r r r! r\ r r r r] g s zGenericRdata.to_textc C sj |� � }|�� r|jdkr&tj�d��|�� }|�d��� } t �
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�S )N�\#z$generic rdata does not start with \#Tz'generic rdata hex data has wrong length) r� �
is_identifierr� rQ � exception� SyntaxErrorZget_intZ!concatenate_remaining_identifiersr) r Z unhexlifyr ) r= r4 r5 r� rX rY r� �token�length�hexr r r r r� o s
zGenericRdata.from_textFc C s |� | j� d S rF )�writer ra r r r rb } s zGenericRdata._to_wirec C s | |||� � �S rF )Z
get_remainingr� r r r r� � s z GenericRdata.from_wire_parser)NT)NTN)NNF)N)r
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__classcell__r r r� r ri Y s" �
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||g��}t ||�}|t | |f< W nd t y� z>td� t
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}|t | |f< |S )N�-�_�.�ANY)r� r� rQ rR r� rq r] r� r r �_module_prefixr< � ImportErrorri )r4 r5 r= Z rdclass_text� rdtype_text�modr r r �get_rdata_class� s2 �
r� )r4 r5 r� rX rY r� �
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��� d}|tkr�|�� } |�| � | �� r�| jdkr�t�| |||||�}
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d��|du r�|�| |||||�}|�� } | jdu�rt�|d| j� |W d � S 1 �s(0 Y dS )a3 Build an rdata object from text format.
This function attempts to dynamically load a class which
implements the specified rdata class and type. If there is no
class-and-type-specific implementation, the GenericRdata class
is used.
Once a class is chosen, its from_text() class method is called
with the parameters to this function.
If *tok* is a ``str``, then a tokenizer is created and the string
is used as its input.
*rdclass*, a ``dns.rdataclass.RdataClass`` or ``str``, the rdataclass.
*rdtype*, a ``dns.rdatatype.RdataType`` or ``str``, the rdatatype.
*tok*, a ``dns.tokenizer.Tokenizer`` or a ``str``.
*origin*, a ``dns.name.Name`` (or ``None``), the
origin to use for relative names.
*relativize*, a ``bool``. If true, name will be relativized.
*relativize_to*, a ``dns.name.Name`` (or ``None``), the origin to use
when relativizing names. If not set, the *origin* value will be used.
*idna_codec*, a ``dns.name.IDNACodec``, specifies the IDNA
encoder/decoder to use if a tokenizer needs to be created. If
``None``, the default IDNA 2003 encoder/decoder is used. If a
tokenizer is not created, then the codec associated with the tokenizer
is the one that is used.
Returns an instance of the chosen Rdata subclass.
)r� Nr� r z9compressed data in generic syntax form of known rdatatyper6 ) r' r( rQ r� r� rq r� r� rR r� r� r� �ExceptionWrapperr� ri r� Zungetr� r� r� � from_wirer r rg Zget_eol_as_tokenZcommentrK rL ) r4 r5 r� rX rY r� r� r= rh r� ZgrdataZrwirer r r r� � s< -
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� � r� r� c C sj t jj�| �} t jj�|�}t| |�}t j�t jj �� |�
| |||�W d � S 1 s\0 Y dS )a Build an rdata object from wire format
This function attempts to dynamically load a class which
implements the specified rdata class and type. If there is no
class-and-type-specific implementation, the GenericRdata class
is used.
Once a class is chosen, its from_wire() class method is called
with the parameters to this function.
*rdclass*, a ``dns.rdataclass.RdataClass`` or ``str``, the rdataclass.
*rdtype*, a ``dns.rdatatype.RdataType`` or ``str``, the rdatatype.
*parser*, a ``dns.wire.Parser``, the parser, which should be
restricted to the rdata length.
*origin*, a ``dns.name.Name`` (or ``None``). If not ``None``,
then names will be relativized to this origin.
Returns an instance of the chosen Rdata subclass.
N) rQ rq r� r� rR r� r� r� r� Z FormErrorr� )r4 r5 r� rX r= r r r r� s
r� )r4 r5 r� �current�rdlenrX rP c C sJ t j�||�}|�|�� t| |||�W d � S 1 s<0 Y dS )a1 Build an rdata object from wire format
This function attempts to dynamically load a class which
implements the specified rdata class and type. If there is no
class-and-type-specific implementation, the GenericRdata class
is used.
Once a class is chosen, its from_wire() class method is called
with the parameters to this function.
*rdclass*, an ``int``, the rdataclass.
*rdtype*, an ``int``, the rdatatype.
*wire*, a ``bytes``, the wire-format message.
*current*, an ``int``, the offset in wire of the beginning of
the rdata.
*rdlen*, an ``int``, the length of the wire-format rdata
*origin*, a ``dns.name.Name`` (or ``None``). If not ``None``,
then names will be relativized to this origin.
Returns an instance of the chosen Rdata subclass.
N)rQ r� r� Z restrict_tor� )r4 r5 r� r� r� rX r� r r r r� % s " r� c @ s e Zd ZdZddhZdZdS )�RdatatypeExistsz DNS rdatatype already exists.r4 r5 zKThe rdata type with class {rdclass:d} and rdtype {rdtype:d} already exists.N)r
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Z supp_kwargsZfmtr r r r r� L s �r� F)�implementationr5 r� � is_singletonr4 rP c C sf t jj�|�}t||�}|tks,t j�|�r8t||d��t| |� dd��t
||f< t j� |||� dS )a� Dynamically register a module to handle an rdatatype.
*implementation*, a module implementing the type in the usual dnspython
way.
*rdtype*, an ``int``, the rdatatype to register.
*rdtype_text*, a ``str``, the textual form of the rdatatype.
*is_singleton*, a ``bool``, indicating if the type is a singleton (i.e.
RRsets of the type can have only one member.)
*rdclass*, the rdataclass of the type, or ``dns.rdataclass.ANY`` if
it applies to all classes.
r� r� r� N) rQ rR r� r� r� ri Z is_metatyper� r< r� r� �
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_chunksizerv r� Z DNSExceptionr r r! r# r+ r/ r2 Z immutableZconstifyZ _constifyr3 ri r� rq r� rR r� �__annotations__r� r� r( r� r� rt r� r� Z IDNACodecr� r� r� r� r� r� r� r� �INr� r r r r �<module> s�
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