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__init__.cpython-310.pyc
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_asyncbackend.cpython-310.pyc
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_asyncio_backend.cpython-310.p...
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_curio_backend.cpython-310.pyc
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_immutable_attr.cpython-310.py...
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_immutable_ctx.cpython-310.pyc
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_trio_backend.cpython-310.pyc
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asyncbackend.cpython-310.pyc
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asyncquery.cpython-310.pyc
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asyncresolver.cpython-310.pyc
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dnssec.cpython-310.pyc
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e164.cpython-310.pyc
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edns.cpython-310.pyc
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entropy.cpython-310.pyc
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enum.cpython-310.pyc
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exception.cpython-310.pyc
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flags.cpython-310.pyc
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grange.cpython-310.pyc
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immutable.cpython-310.pyc
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inet.cpython-310.pyc
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ipv4.cpython-310.pyc
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ipv6.cpython-310.pyc
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message.cpython-310.pyc
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name.cpython-310.pyc
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namedict.cpython-310.pyc
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node.cpython-310.pyc
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opcode.cpython-310.pyc
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query.cpython-310.pyc
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rcode.cpython-310.pyc
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rdata.cpython-310.pyc
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rdataclass.cpython-310.pyc
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rdataset.cpython-310.pyc
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rdatatype.cpython-310.pyc
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renderer.cpython-310.pyc
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resolver.cpython-310.pyc
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reversename.cpython-310.pyc
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rrset.cpython-310.pyc
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serial.cpython-310.pyc
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set.cpython-310.pyc
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tokenizer.cpython-310.pyc
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transaction.cpython-310.pyc
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tsig.cpython-310.pyc
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tsigkeyring.cpython-310.pyc
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ttl.cpython-310.pyc
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update.cpython-310.pyc
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version.cpython-310.pyc
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versioned.cpython-310.pyc
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wire.cpython-310.pyc
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xfr.cpython-310.pyc
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zone.cpython-310.pyc
31.1
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zonefile.cpython-310.pyc
6.86
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Code Editor : tsig.cpython-310.pyc
o �_�+ � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZddl ZG dd� dej j �Z G dd� dej j �Z G dd� dej j �ZG d d � d ej j �ZG d d � d ej j �ZG d d� de�ZG dd� de�ZG dd� de�ZG dd� de�Zej�d�Zej�d�Zej�d�Zej�d�Zej�d�Zej�d�Z ej�d�Z ej�d �Z ej�d �Z ej�d �Z eZ!G d d � d �Z"G d!d"� d"�Z#G d#d$� d$�Z$ d2d%d&�Z%d'd(� Z&d3d*d+�Z' )d4d,d-�Z(d.d/� Z)G d0d1� d1�Z*dS )5zDNS TSIG support.� Nc @ � e Zd ZdZdS )�BadTimez8The current time is not within the TSIG's validity time.N��__name__� __module__� __qualname__�__doc__� r r �*/usr/lib/python3/dist-packages/dns/tsig.pyr � r c @ r )� BadSignaturez#The TSIG signature fails to verify.Nr r r r r r # r r c @ r )�BadKeyz2The TSIG record owner name does not match the key.Nr r r r r r ( r r c @ r )� BadAlgorithmz*The TSIG algorithm does not match the key.Nr r r r r r - r r c @ r )� PeerErrorz;Base class for all TSIG errors generated by the remote peerNr r r r r r 2 r r c @ r )� PeerBadKeyz$The peer didn't know the key we usedNr r r r r r 7 r r c @ r )�PeerBadSignaturez*The peer didn't like the signature we sentNr r r r r r < r r c @ r )� PeerBadTimez%The peer didn't like the time we sentNr r r r r r A r r c @ r )�PeerBadTruncationz=The peer didn't like amount of truncation in the TSIG we sentNr r r r r r F r r zHMAC-MD5.SIG-ALG.REG.INTz hmac-sha1z hmac-sha224z hmac-sha256zhmac-sha256-128z hmac-sha384zhmac-sha384-192z hmac-sha512zhmac-sha512-256�gss-tsigc @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �GSSTSigaG GSS-TSIG TSIG implementation. This uses the GSS-API context established in the TKEY message handshake to sign messages using GSS-API message integrity codes, per the RFC. In order to avoid a direct GSSAPI dependency, the keyring holds a ref to the GSSAPI object required, rather than the key itself. c C s || _ d| _d| _d S )N� r )�gssapi_context�data�name)�selfr r r r �__init__d s zGSSTSig.__init__c C s | j |7 _ d S �N)r �r r r r r �updatei s zGSSTSig.updatec C s | j �| j�S r )r � get_signaturer �r r r r �signl s z GSSTSig.signc C s& z | j �| j|�W S ty t�w r )r �verify_signaturer � Exceptionr )r �expectedr r r �verifyp s �zGSSTSig.verifyN)r r r r r r r! r% r r r r r [ s r c @ s( e Zd Zdd� Zdd� Zedd� �ZdS )�GSSTSigAdapterc C s || _ d S r )�keyring)r r' r r r r z s zGSSTSigAdapter.__init__c C sB || j v r | j | }t|t�r |jtkr |r t�|||� |S d S r )r' � isinstance�Key� algorithm�GSS_TSIGr& �parse_tkey_and_step)r �message�keyname�keyr r r �__call__} s zGSSTSigAdapter.__call__c C sV z |� |j|tjjtjj�}|r |d j}|j}|� |�W S W d S t y* Y d S w )Nr ) � find_rrset�answer�dns� rdataclass�ANY� rdatatype�TKEYr/ �secret�step�KeyError)�clsr/ r- r. �rrset�tokenr r r r r, � s � � �z"GSSTSigAdapter.parse_tkey_and_stepN)r r r r r0 � classmethodr, r r r r r& y s r& c @ sv e Zd ZdZeejeeje ej e ej dfe ej eej dfeejeejdfeeji Zdd� Zdd� Zd d � Zd d � Zd S )�HMACTSigzo HMAC TSIG implementation. This uses the HMAC python module to handle the sign/verify operations. � � � c C s� z| j | }W n ty td|� d�d ��w t|t�r.tj||d d�| _|d | _n tj||d�| _d | _| jj | _ | jrN| j d| j� �7 _ d S d S )NzTSIG algorithm � zis not supportedr )� digestmod� �-) �_hashesr: �NotImplementedErrorr( �tuple�hmac�new� hmac_context�sizer )r r/ r* �hashinfor r r r � s �� �zHMACTSig.__init__c C s | j �|�S r )rL r r r r r r � s zHMACTSig.updatec C s& | j �� }| jr|d | jd � }|S )N� )rL �digestrM )r rP r r r r! � s z HMACTSig.signc C s | � � }t�||�s t�d S r )r! rJ �compare_digestr )r r$ �macr r r r% � s �zHMACTSig.verifyN)r r r r � HMAC_SHA1�hashlib�sha1� HMAC_SHA224�sha224� HMAC_SHA256�sha256�HMAC_SHA256_128� HMAC_SHA384�sha384�HMAC_SHA384_192� HMAC_SHA512�sha512�HMAC_SHA512_256�HMAC_MD5�md5rG r r r! r% r r r r r? � s � r? c C s0 |o| }|r t |�}|r |�t�dt|��� |�|� |�t�d|j�� |�| dd� � |rN|�|j�� � |�t�dtj j �� |�t�dd�� |du rU|j }|d? d@ }|d@ } t�d || |j �} t|j �} | dkrutd ��|r�|�|j�� | � |�t�d |j| �|j � |S |�| � |S ) z�Return a context containing the TSIG rdata for the input parameters @rtype: dns.tsig.HMACTSig or dns.tsig.GSSTSig object @raises ValueError: I{other_data} is too long @raises NotImplementedError: I{algorithm} is not supported �!H� Nz!Ir � i�� l �� z!HIHz TSIG Other Data is > 65535 bytesz!HH)� get_contextr �struct�pack�len� original_idr � to_digestabler3 r4 r5 � time_signed�fudge�other� ValueErrorr* �error) �wirer/ �rdata�time� request_mac�ctx�multi�first� upper_time� lower_time� time_encoded� other_lenr r r �_digest� s4 �r| c C s4 |rt | �}|�t�dt|��� |�|� |S dS )z�If this is the first message in a multi-message sequence, start a new context. @rtype: dns.tsig.HMACTSig or dns.tsig.GSSTSig object rc N)rf r rg rh ri )r/ rR rv ru r r r �_maybe_start_digest� s r} Fc C s: t | ||||||�}|�� }|j||d�}|t|||�fS )a~ Return a (tsig_rdata, mac, ctx) tuple containing the HMAC TSIG rdata for the input parameters, the HMAC MAC calculated by applying the TSIG signature algorithm, and the TSIG digest context. @rtype: (string, dns.tsig.HMACTSig or dns.tsig.GSSTSig object) @raises ValueError: I{other_data} is too long @raises NotImplementedError: I{algorithm} is not supported )rl rR )r| r! �replacer} ) rq r/ rr rs rt ru rv rR �tsigr r r r! s r! c C s t �d| dd� �\} | dkrtjj�| d8 } | dd� t �d| � | d|� } |jdkrY|jtjjkr7t �|jtjj kr@t �|jtjj krIt �|jtjjkrRt�td|j ��t|j| �|jkret�|j|krlt�|j|jkrtt�t| ||d|||�}|�|j� t ||j|�S )aF Validate the specified TSIG rdata against the other input parameters. @raises FormError: The TSIG is badly formed. @raises BadTime: There is too much time skew between the client and the server. @raises BadSignature: The TSIG signature did not validate @rtype: dns.tsig.HMACTSig or dns.tsig.GSSTSig objectrc � � r rE zunknown TSIG error code %dN) rg �unpackr3 � exception� FormErrorrh rp �rcode�BADSIGr �BADKEYr �BADTIMEr �BADTRUNCr r �absrl rm r r r r* r r| r% rR r} ) rq r/ �ownerrr �nowrt � tsig_startru rv �adcount�new_wirer r r �validate s0 $ r� c C s" | j tkr t| j�S t| j| j �S )z�Returns an HMAC context for the specified key. @rtype: HMAC context @raises NotImplementedError: I{algorithm} is not supported )r* r+ r r8 r? )r/ r r r rf 5 s rf c @ s( e Zd Zefdd�Zdd� Zdd� ZdS )r) c C sZ t |t�r tj�|�}|| _t |t�rt�|�� �}|| _t |t�r(tj�|�}|| _ d S r ) r( �strr3 r � from_text�base64� decodebytes�encoder8 r* )r r r8 r* r r r r C s z Key.__init__c C s. t |t�o| j|jko| j|jko| j|jkS r )r( r) r r8 r* )r rn r r r �__eq__N s � � �z Key.__eq__c C s4 d| j � d�d| j� d� dt�| j��� � d� S )Nz<DNS key name='z', z algorithm='zsecret='z'>)r r* r� � b64encoder8 �decoder r r r �__repr__T s ��z Key.__repr__N)r r r �default_algorithmr r� r� r r r r r) B s r) )NNNN)NNNF)NF)+r r� rT rJ rg � dns.exceptionr3 �dns.rdataclass�dns.name� dns.rcoder� � DNSExceptionr r r r r r r r r r r� ra rS rV rX rZ r[ r] r^ r` r+ r� r r& r? r| r} r! r� rf r) r r r r �<module> sT 5 �$ �%
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