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a h�h�B � @ s� U d Z ddlZddlZddlZddlZddlmZmZmZm Z ddl Z ddl Z ddl Z ddlZ G dd� de jj�ZG dd� d�ZG dd � d e�ZG d d � d e�ZG d d � d e jj�ZG dd� de�ZG dd� de�ZG dd� de�ZG dd� de�Zejeejeej eej eej eiZ eeef e d< eed�dd�Z!e ee"f ded�d d �Z#e ee"f e$e%e%ed �d d �Z&eedd!�d"d#�Z'ej Z ej(Z(ej)Z)ej*Z*ejZej+Z+ej Z ej,Z,ej-Z-ej.Z.ejZej Z dS )$z EDNS Options� N)�Any�Dict�Optional�Unionc @ sH e Zd ZdZdZdZdZdZdZdZ dZ d Z d Z d Z d Zed d� �ZdS )� OptionType� � � � � � � � � � � � c C s dS �Ni�� � ��clsr r �x/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/dns/edns.py�_maximum: s zOptionType._maximumN)�__name__� __module__� __qualname__�NSID�DAU�DHU�N3U�ECS�EXPIRE�COOKIE� KEEPALIVE�PADDING�CHAIN�EDE� REPORTCHANNEL� classmethodr r r r r r s r c @ s� e Zd ZdZeeef d�dd�Zd ee ee d�dd�Z ed �d d �Z e ed d d �dd��Zdd� Zdd� Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � ZdS )!�Optionz%Base class for all EDNS option types.��otypec C s t �|�| _dS )z_Initialize an option. *otype*, a ``dns.edns.OptionType``, is the option type. N)r �maker+ )�selfr+ r r r �__init__B s zOption.__init__N��file�returnc C s t �dS )zUConvert an option to wire format. Returns a ``bytes`` or ``None``. N��NotImplementedError�r- r0 r r r �to_wireI s zOption.to_wire�r1 c C s t �d S �Nr2 �r- r r r �to_textQ s zOption.to_text�dns.wire.Parser�r+ �parserr1 c C s t �dS )a Build an EDNS option object from wire format. *otype*, a ``dns.edns.OptionType``, is the option type. *parser*, a ``dns.wire.Parser``, the parser, which should be restructed to the option length. Returns a ``dns.edns.Option``. Nr2 �r r+ r< r r r �from_wire_parserT s zOption.from_wire_parserc C s, | � � }|� � }||kr dS ||kr(dS dS )z�Compare an EDNS option with another option of the same type. Returns < 0 if < *other*, 0 if == *other*, and > 0 if > *other*. r � ���)r5 )r- �other�wireZowirer r r �_cmpa s z Option._cmpc C s, t |t�sdS | j|jkr dS | �|�dkS )NFr �� isinstancer) r+ rC �r- rA r r r �__eq__n s z Option.__eq__c C s, t |t�sdS | j|jkr dS | �|�dkS )NTr rD rF r r r �__ne__u s z Option.__ne__c C s( t |t�r| j|jkrtS | �|�dk S �Nr �rE r) r+ �NotImplementedrC rF r r r �__lt__| s z Option.__lt__c C s( t |t�r| j|jkrtS | �|�dkS rI rJ rF r r r �__le__� s z Option.__le__c C s( t |t�r| j|jkrtS | �|�dkS rI rJ rF r r r �__ge__� s z Option.__ge__c C s( t |t�r| j|jkrtS | �|�dkS rI rJ rF r r r �__gt__� s z Option.__gt__c C s | � � S r7 )r9 r8 r r r �__str__� s zOption.__str__)N)r r r �__doc__r r �strr. r r �bytesr5 r9 r( r> rC rG rH rL rM rN rO rP r r r r r) ? s r) c s~ e Zd ZdZeeef eeef d�� fdd� Zde e e e d�dd�Z ed �d d �Z e eeef d ed �dd��Z� ZS )� GenericOptionzwGeneric Option Class This class is used for EDNS option types for which we have no better implementation. )r+ �datac s" t � �|� tjj�|d�| _d S )NT)�superr. �dns�rdata�RdataZ _as_bytesrU )r- r+ rU �� __class__r r r. � s zGenericOption.__init__Nr/ c C s |r|� | j� d S | jS d S r7 )�writerU r4 r r r r5 � s zGenericOption.to_wirer6 c C s d| j S )Nz Generic %dr* r8 r r r r9 � s zGenericOption.to_textr: r; c C s | ||� � �S r7 �� get_remainingr= r r r r> � s z GenericOption.from_wire_parser)N)r r r rQ r r rR rS r. r r r5 r9 r( r) r> � __classcell__r r rZ r rT � s $ �rT c s� e Zd ZdZdeee ed�� fdd� Zed�dd �Ze ee d �d d ��Z dee ee d �dd�Zeeeef de d�dd��Z� ZS )� ECSOptionz!EDNS Client Subnet (ECS, RFC7871)Nr ��address�srclen�scopelenc s^ t � �tj� tj�|�}|tjkrjd| _ |du r6d}tj j � |�}tj j � |dd�}tj j � |dd�}nX|tjkr�d| _ |du r�d}tj j �|�}tj j � |dd�}tj j � |dd�}ntd ��|dus�J �|| _|| _|| _tj�||�}tt�|d ��}|d|� | _|d }|dk�rZt�d t| jd d� �dd | > @ �}| jdd � | | _dS )a� *address*, a ``str``, is the client address information. *srclen*, an ``int``, the source prefix length, which is the leftmost number of bits of the address to be used for the lookup. The default is 24 for IPv4 and 56 for IPv6. *scopelen*, an ``int``, the scope prefix length. This value must be 0 in queries, and should be set in responses. � N�8 r � r? � � zBad address family� @r �Br@ � ) rV r. r r rW ZinetZaf_for_address�socket�AF_INET6�familyrX rY Z_as_ipv6_address�_as_int�AF_INETZ_as_ipv4_address� ValueErrorrb rc rd � inet_pton�int�math�ceil�addrdata�struct�pack�ord) r- rb rc rd �afrw �nbytes�nbits�lastrZ r r r. � s8 &zECSOption.__init__r6 c C s d| j � d| j� d| j� �S )NzECS �/z scope/ra r8 r r r r9 � s zECSOption.to_text)�textr1 c C s. d}| � � }d}t|�dkr&|d }nBt|�dkrX|d |krNtd| � d���|d }ntd| � d���|�d�}|dkr�|� d�\}}d }n*|dkr�|� d�\}}}ntd| � d���z t|�}W n& ty� td d|� d � ��Y n0 z t|�} W n( t�y td d|� d � ��Y n0 t|| |�S )a� Convert a string into a `dns.edns.ECSOption` *text*, a `str`, the text form of the option. Returns a `dns.edns.ECSOption`. Examples: >>> import dns.edns >>> >>> # basic example >>> dns.edns.ECSOption.from_text('1.2.3.4/24') >>> >>> # also understands scope >>> dns.edns.ECSOption.from_text('1.2.3.4/24/32') >>> >>> # IPv6 >>> dns.edns.ECSOption.from_text('2001:4b98::1/64/64') >>> >>> # it understands results from `dns.edns.ECSOption.to_text()` >>> dns.edns.ECSOption.from_text('ECS 1.2.3.4/24/32') r Nr? r re zcould not parse ECS from "�"r �0zinvalid scope z": scope must be an integerzinvalid srclen z ": srclen must be an integer)�split�lenrr �countrt r` ) r� Zoptional_prefix�tokensZecs_textZ n_slashesrb ZtsrclenZtscope�scoperc r r r � from_text� s8 � zECSOption.from_textr/ c C s6 t �d| j| j| j�| j }|r.|�|� d S |S d S )N�!HBB)rx ry ro rc rd rw r\ �r- r0 �valuer r r r5 s � zECSOption.to_wirer: r; c C s� |� d�\}}}tt�|d ��}|�|�}|dkrRd| }tj�|d| �} n.|dkrxd| }tj�|d| �} nt d��| | ||�S ) Nr� rj r? � � re � zunsupported family) Z get_structrt ru rv � get_bytesrW Zipv4� inet_ntoaZipv6rr ) r r+ r< ro �srcr� Zaddrlen�prefix�pad�addrr r r r> & s zECSOption.from_wire_parser)Nr )N)r r r rQ rR r rt r. r9 � staticmethodr) r� r rS r5 r( r r r> r_ r r rZ r r` � s /6 �r` c @ s| e Zd ZdZdZdZdZdZdZdZ dZ d Z d Z d Z d Zd ZdZdZdZdZdZdZdZdZdZdZdZdZe dd� �Z d S ) �EDECoder r? re r r� r r r r r r r r r � r r� � r � � � � � rh c C s dS r r r r r r r T s zEDECode._maximumN) r r r �OTHERZ UNSUPPORTED_DNSKEY_ALGORITHMZUNSUPPORTED_DS_DIGEST_TYPEZ STALE_ANSWERZ FORGED_ANSWERZDNSSEC_INDETERMINATEZ DNSSEC_BOGUSZSIGNATURE_EXPIREDZSIGNATURE_NOT_YET_VALIDZDNSKEY_MISSINGZRRSIGS_MISSINGZNO_ZONE_KEY_BIT_SETZ NSEC_MISSINGZ CACHED_ERRORZ NOT_READYZBLOCKEDZCENSOREDZFILTEREDZ PROHIBITEDZSTALE_NXDOMAIN_ANSWERZNOT_AUTHORITATIVEZ NOT_SUPPORTEDZNO_REACHABLE_AUTHORITYZ NETWORK_ERRORZ INVALID_DATAr( r r r r r r� 9 s6 r� c s� e Zd ZdZh d�Zdeeef ee d�� fdd� Z ed�dd �Z dee ee d �d d �Z eeeef d ed�dd��Z� ZS )� EDEOptionz!Extended DNS Error (EDE, RFC8914)> ZDNSSECZDSZNXDOMAINZRRSIGsZNSECZDNSKEYN)�coder� c s> t � �tj� t�|�| _|dur4t|t�s4t d��|| _ dS )z�*code*, a ``dns.edns.EDECode`` or ``str``, the info code of the extended error. *text*, a ``str`` or ``None``, specifying additional information about the error. Nztext must be string or None) rV r. r r& r� r, r� rE rR rr r� )r- r� r� rZ r r r. ^ s zEDEOption.__init__r6 c sn d� j � �}� j tv rPt�� j �}d�� fdd�|�d�D ��}|d|� d�7 }� jd urj|d� j� �7 }|S ) NzEDE � c 3 s$ | ] }|� j v r|n|�� V qd S r7 )�_preserve_case�title)�.0�wordr8 r r � <genexpr>q s �z$EDEOption.to_text.<locals>.<genexpr>�_z (�)z: )r� r� r9 �joinr� r� )r- �output�descr r8 r r9 m s � zEDEOption.to_textr/ c C sB t �d| j�}| jd ur(|| j�d�7 }|r:|�|� d S |S d S )Nz!H�utf8)rx ry r� r� �encoder\ r� r r r r5 z s zEDEOption.to_wirer: r; c C sL t �|�� �}|�� }|r>|d dkr2|d d� }|�d�}nd }| ||�S )Nr@ r r� )r� r, Z get_uint16r^ �decode)r r+ r< r� r� Zbtextr r r r> � s zEDEOption.from_wire_parser)N)N)r r r rQ r� r r� rR r r. r9 r rS r5 r( r r) r> r_ r r rZ r r� Y s " �r� c sh e Zd Zed�� fdd� Zdeee d�dd�Zed�d d �Z e e e ef e jjed �d d ��Z� ZS )� NSIDOption)�nsidc s t � �tj� || _d S r7 )rV r. r r r� )r- r� rZ r r r. � s zNSIDOption.__init__Nr/ c C s |r|� | j� d S | jS d S r7 )r\ r� r4 r r r r5 � s zNSIDOption.to_wirer6 c C s: t dd� | jD ��r | j�� }nt�| j��� }d|� �S )Nc s s | ]}|d ko|dkV qdS )ri �~ Nr )r� �cr r r r� � � z%NSIDOption.to_text.<locals>.<genexpr>zNSID )�allr� r� �binascii�hexlify)r- r� r r r r9 � s zNSIDOption.to_textr; c C s | |� � �S r7 r] r= r r r r> � s zNSIDOption.from_wire_parser)N�r r r rS r. r r r5 rR r9 r( r r rW rB �Parserr) r> r_ r r rZ r r� � s �r� c sj e Zd Zeed�� fdd� Zdeee d�dd�Zed�d d �Z e e e ef e jjed �d d ��Z� ZS )� CookieOption)�client�serverc sb t � �tjjj� || _|| _t|�dkr2t d��t|�dkr^t|�dk sVt|�dkr^t d��d S )Nr z client cookie must be 8 bytesr ri z5server cookie must be empty or between 8 and 32 bytes) rV r. rW Zednsr r" r� r� r� rr �r- r� r� rZ r r r. � s $zCookieOption.__init__Nr/ c C s> |r.|� | j� t| j�dkr*|� | j� d S | j| j S d S rI )r\ r� r� r� r4 r r r r5 � s zCookieOption.to_wirer6 c C sB t �| j��� }t| j�dkr0t �| j��� }nd}d|� |� �S )Nr � zCOOKIE )r� r� r� r� r� r� r� r r r r9 � s zCookieOption.to_textr; c C s | |� d�|�� �S )Nr )r� r^ r= r r r r> � s z CookieOption.from_wire_parser)Nr� r r rZ r r� � s �r� c sl e Zd Zejjd�� fdd� Zdeee d�dd�Z e d�d d �Z e eee f ejjed �d d ��Z� ZS )�ReportChannelOption)� agent_domainc s t � �tj� || _d S r7 )rV r. r r' r� )r- r� rZ r r r. � s z ReportChannelOption.__init__Nr/ c C s | j �|�S r7 )r� r5 r4 r r r r5 � s zReportChannelOption.to_wirer6 c C s d| j �� S )NzREPORTCHANNEL )r� r9 r8 r r r r9 � s zReportChannelOption.to_textr; c C s | |� � �S r7 )�get_namer= r r r r> � s z$ReportChannelOption.from_wire_parser)N)r r r rW �name�Namer. r r rS r5 rR r9 r( r r rB r� r) r> r_ r r rZ r r� � s �r� �_type_to_class)r+ r1 c C s t �| �}|du rt}|S )z�Return the class for the specified option type. The GenericOption class is used if a more specific class is not known. N)r� �getrT )r+ r r r r �get_option_class� s r� r: r; c C s t �| �} t| �}|�| |�S )a Build an EDNS option object from wire format. *otype*, an ``int``, is the option type. *parser*, a ``dns.wire.Parser``, the parser, which should be restricted to the option length. Returns an instance of a subclass of ``dns.edns.Option``. )r r, r� r> )r+ r< r r r r �option_from_wire_parser� s r� )r+ rB �current�olenr1 c C sF t j�||�}|�|�� t| |�W d � S 1 s80 Y dS )ar Build an EDNS option object from wire format. *otype*, an ``int``, is the option type. *wire*, a ``bytes``, is the wire-format message. *current*, an ``int``, is the offset in *wire* of the beginning of the rdata. *olen*, an ``int``, is the length of the wire-format option data Returns an instance of a subclass of ``dns.edns.Option``. N)rW rB r� Z restrict_tor� )r+ rB r� r� r< r r r �option_from_wire s r� )�implementationr+ r1 c C s | t |< dS )z�Register the implementation of an option type. *implementation*, a ``class``, is a subclass of ``dns.edns.Option``. *otype*, an ``int``, is the option type. N)r� )r� r+ r r r � register_type" s r� )/rQ r� ru rm rx �typingr r r r Zdns.enumrW Zdns.inetZ dns.rdataZdns.wire�enum�IntEnumr r) rT r` r� r� r� r� r� r r& r r" r' r� �__annotations__r� rR r� rS rt r� r� r r r r! r# r$ r% r r r r �<module> sZ U ="� � �
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