o
    hB                  
   @   s  U d Z ddlZddlZddlZddlZddlmZmZmZm	Z	 ddl
ZddlZddlZddlZG dd dejjZG dd dZG dd	 d	eZG d
d deZG dd dejjZG dd deZG dd deZG dd deZG dd deZejeejeejeejeejeiZeeef e d< dedefddZ!de	ee"f dddefddZ#de	ee"f de$d e%d!e%def
d"d#Z&d$ededdfd%d&Z'ejZej(Z(ej)Z)ej*Z*ejZej+Z+ejZej,Z,ej-Z-ej.Z.ejZejZdS )'zEDNS Options    N)AnyDictOptionalUnionc                   @   sH   e Zd ZdZdZdZdZdZdZdZ	dZ
d	Zd
ZdZdZedd ZdS )
OptionType               	   
                  c                 C      dS Ni   clsr   r   ;/var/www/html/venv/lib/python3.10/site-packages/dns/edns.py_maximum:      zOptionType._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 Zd ZdZdeeef fddZd dee	 dee
 fdd	Zdefd
dZededddd f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d ZdS )!Optionz%Base class for all EDNS option types.otypec                 C   s   t || _dS )z_Initialize an option.

        *otype*, a ``dns.edns.OptionType``, is the option type.
        N)r   maker,   )selfr,   r   r   r   __init__B   s   zOption.__init__Nfilereturnc                 C      t )zUConvert an option to wire format.

        Returns a ``bytes`` or ``None``.

        NotImplementedErrorr.   r0   r   r   r   to_wireI   s   zOption.to_wirec                 C   r2   Nr3   r.   r   r   r   to_textQ   s   zOption.to_textparserdns.wire.Parserc                 C   r2   )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``.
        r3   r   r,   r:   r   r   r   from_wire_parserT   s   zOption.from_wire_parserc                 C   s,   |   }|  }||krdS ||krdS dS )zCompare an EDNS option with another option of the same type.

        Returns < 0 if < *other*, 0 if == *other*, and > 0 if > *other*.
        r      )r6   )r.   otherwireZowirer   r   r   _cmpa   s   zOption._cmpc                 C   s,   t |tsdS | j|jkrdS | |dkS )NFr   
isinstancer+   r,   rB   r.   r@   r   r   r   __eq__n   
   
zOption.__eq__c                 C   s,   t |tsdS | j|jkrdS | |dkS )NTr   rC   rE   r   r   r   __ne__u   rG   zOption.__ne__c                 C   s(   t |tr| j|jkrtS | |dk S Nr   rD   r+   r,   NotImplementedrB   rE   r   r   r   __lt__|      zOption.__lt__c                 C   s(   t |tr| j|jkrtS | |dkS rI   rJ   rE   r   r   r   __le__   rM   zOption.__le__c                 C   s(   t |tr| j|jkrtS | |dkS rI   rJ   rE   r   r   r   __ge__   rM   zOption.__ge__c                 C   s(   t |tr| j|jkrtS | |dkS rI   rJ   rE   r   r   r   __gt__   rM   zOption.__gt__c                 C   s   |   S r7   )r9   r8   r   r   r   __str__   s   zOption.__str__r7   )r   r   r   __doc__r   r   strr/   r   r   bytesr6   r9   r*   r=   rB   rF   rH   rL   rN   rO   rP   rQ   r   r   r   r   r+   ?   s    r+   c                       s   e Zd ZdZdeeef deeef f fddZdde	e
 de	e fd	d
ZdefddZedeeef dddefddZ  ZS )GenericOptionzwGeneric Option Class

    This class is used for EDNS option types for which we have no better
    implementation.
    r,   datac                    s"   t  | tjj|d| _d S )NT)superr/   dnsrdataRdataZ	_as_bytesrV   )r.   r,   rV   	__class__r   r   r/      s   zGenericOption.__init__Nr0   r1   c                 C      |r
| | j d S | jS r7   )writerV   r5   r   r   r   r6         zGenericOption.to_wirec                 C   s
   d| j  S )Nz
Generic %d)r,   r8   r   r   r   r9      s   
zGenericOption.to_textr:   r;   c                 C   s   | ||  S r7   get_remainingr<   r   r   r   r=      s   zGenericOption.from_wire_parserr7   )r   r   r   rR   r   r   rS   rT   r/   r   r   r6   r9   r*   r+   r=   __classcell__r   r   r[   r   rU      s    &
rU   c                       s   e Zd ZdZddedee def fddZd	efd
dZe	ded	e
fddZddee d	ee fddZedeeef ddd	e
fddZ  ZS )	ECSOptionz!EDNS Client Subnet (ECS, RFC7871)Nr   addresssrclenscopelenc           	         s`  t  tj tj|}|tjkr5d| _	|du rd}tj
j|}tj
j|dd}tj
j|dd}n,|tjkr]d| _	|du rCd}tj
j|}tj
j|dd}tj
j|dd}ntd	|dusgJ || _|| _|| _tj||}tt|d
 }|d| | _|d }|dkrtdt| jdd dd| > @ }| jdd | | _dS dS )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.
           N8   r      r>          zBad address family       @r   Br?      )rW   r/   r   r"   rX   ZinetZaf_for_addresssocketAF_INET6familyrY   rZ   Z_as_ipv6_address_as_intAF_INETZ_as_ipv4_address
ValueErrorrd   re   rf   	inet_ptonintmathceiladdrdatastructpackord)	r.   rd   re   rf   afry   nbytesnbitslastr[   r   r   r/      s:   

&zECSOption.__init__r1   c                 C   s   d| j  d| j d| j S )NzECS /z scope/)rd   re   rf   r8   r   r   r   r9      s   zECSOption.to_texttextc           
      C   s$  d}|   }d}t|dkr|d }n!t|dkr,|d |kr'td|  d|d }ntd|  d|d}|dkrG| d\}}d	}n|dkrT| d\}}}ntd|  dzt|}W n tys   td
d| d w zt|}	W n ty   tdd| d w 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   rg   zcould not parse ECS from ""r   0zinvalid scope z": scope must be an integerzinvalid srclen z": srclen must be an integer)splitlenrt   countrv   rc   )
r   Zoptional_prefixtokensZecs_textZ	n_slashesrd   ZtsrclenZtscopescopere   r   r   r   	from_text   s<   


zECSOption.from_textr0   c                 C   s2   t d| j| j| j| j }|r|| d S |S )N!HBB)rz   r{   rq   re   rf   ry   r^   r.   r0   valuer   r   r   r6     s   
zECSOption.to_wirer,   r:   r;   c           
      C   s   | d\}}}tt|d }||}|dkr)d| }tj|d|  }	n|dkr<d| }tj|d|  }	nt	d| |	||S )	Nr   rl   r>          rg      zunsupported family)
Z
get_structrv   rw   rx   	get_bytesrX   Zipv4	inet_ntoaZipv6rt   )
r   r,   r:   rq   srcr   Zaddrlenprefixpadaddrr   r   r   r=   &  s   
zECSOption.from_wire_parserrI   r7   )r   r   r   rR   rS   r   rv   r/   r9   staticmethodr+   r   r   rT   r6   r*   r   r   r=   rb   r   r   r[   r   rc      s     /6

rc   c                   @   s|   e Zd ZdZdZdZdZdZdZdZ	dZ
d	Zd
ZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZedd ZdS )EDECoder   r>   rg   r   r   r   r	   r
   r   r   r   r   r   r      r   r      r                  rj   c                 C   r   r   r   r   r   r   r   r   T  r   zEDECode._maximumN)r   r   r   OTHERZUNSUPPORTED_DNSKEY_ALGORITHMZUNSUPPORTED_DS_DIGEST_TYPEZSTALE_ANSWERZFORGED_ANSWERZDNSSEC_INDETERMINATEZDNSSEC_BOGUSZSIGNATURE_EXPIREDZSIGNATURE_NOT_YET_VALIDZDNSKEY_MISSINGZRRSIGS_MISSINGZNO_ZONE_KEY_BIT_SETZNSEC_MISSINGZCACHED_ERRORZ	NOT_READYZBLOCKEDZCENSOREDZFILTEREDZ
PROHIBITEDZSTALE_NXDOMAIN_ANSWERZNOT_AUTHORITATIVEZNOT_SUPPORTEDZNO_REACHABLE_AUTHORITYZNETWORK_ERRORZINVALID_DATAr*   r   r   r   r   r   r   9  s8    r   c                       s   e Zd ZdZh dZddeeef dee f fddZ	defd	d
Z
ddee dee fddZedeeef dddefddZ  ZS )	EDEOptionz!Extended DNS Error (EDE, RFC8914)>   ZDNSKEYZDSZDNSSECZNSECZRRSIGsZNXDOMAINNcoder   c                    s>   t  tj t|| _|durt|tst	d|| _
dS )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.
        Nztext must be string or None)rW   r/   r   r(   r   r-   r   rD   rS   rt   r   )r.   r   r   r[   r   r   r/   ^  s
   
zEDEOption.__init__r1   c                    sn   d j  } j tv r(t j }d fdd|dD }|d| d7 } jd ur5|d j 7 }|S )	NzEDE  c                 3   s&    | ]}| j v r|n| V  qd S r7   )_preserve_casetitle).0wordr8   r   r   	<genexpr>q  s
    
z$EDEOption.to_text.<locals>.<genexpr>_z ()z: )r   r   r9   joinr   r   )r.   outputZdescr   r8   r   r9   m  s   

zEDEOption.to_textr0   c                 C   s>   t d| j}| jd ur|| jd7 }|r|| d S |S )Nz!Hutf8)rz   r{   r   r   encoder^   r   r   r   r   r6   z  s   

zEDEOption.to_wirer,   r:   r;   c                 C   sL   t | }| }|r|d dkr|d d }|d}nd }| ||S )Nr?   r   r   )r   r-   Z
get_uint16ra   decode)r   r,   r:   r   r   Zbtextr   r   r   r=     s   
zEDEOption.from_wire_parserr7   )r   r   r   rR   r   r   r   rS   r   r/   r9   r   rT   r6   r*   r   r+   r=   rb   r   r   r[   r   r   Y  s    $
r   c                       sn   e Zd Zdef fddZddedee fddZdefd	d
Z	e
deeef dejjdefddZ  ZS )
NSIDOptionnsidc                       t  tj || _d S r7   )rW   r/   r   r   r   )r.   r   r[   r   r   r/        
zNSIDOption.__init__Nr0   r1   c                 C   r]   r7   )r^   r   r5   r   r   r   r6     r_   zNSIDOption.to_wirec                 C   s:   t dd | jD r| j }nt| j }d| S )Nc                 s   s     | ]}|d ko|dkV  qdS )rk   ~   Nr   )r   cr   r   r   r     s    z%NSIDOption.to_text.<locals>.<genexpr>zNSID )allr   r   binasciihexlify)r.   r   r   r   r   r9     s   
zNSIDOption.to_textr,   r:   c                 C      | |  S r7   r`   r<   r   r   r   r=        zNSIDOption.from_wire_parserr7   r   r   r   rT   r/   r   r   r6   rS   r9   r*   r   r   rX   rA   Parserr+   r=   rb   r   r   r[   r   r     s    
r   c                       sr   e Zd Zdedef fddZddedee fdd	Zdefd
dZ	e
deeef dejjdefddZ  ZS )CookieOptionclientserverc                    sf   t  tjjj || _|| _t|dkrt	dt|dkr/t|dk s+t|dkr1t	dd S d S )Nr   zclient cookie must be 8 bytesr   rk   z5server cookie must be empty or between 8 and 32 bytes)
rW   r/   rX   Zednsr   r$   r   r   r   rt   r.   r   r   r[   r   r   r/     s   $zCookieOption.__init__Nr0   r1   c                 C   s:   |r| | j t| jdkr| | j d S | j| j S rI   )r^   r   r   r   r5   r   r   r   r6     s   zCookieOption.to_wirec                 C   sB   t | j }t| jdkrt | j }nd}d| | S )Nr    zCOOKIE )r   r   r   r   r   r   r   r   r   r   r9     s
   zCookieOption.to_textr,   r:   c                 C   s   | | d| S )Nr   )r   ra   r<   r   r   r   r=     s   zCookieOption.from_wire_parserr7   r   r   r   r[   r   r     s    		
r   c                       sr   e Zd Zdejjf fddZddedee	 fddZ
defd	d
Zedeeef dejjdefddZ  ZS )ReportChannelOptionagent_domainc                    r   r7   )rW   r/   r   r)   r   )r.   r   r[   r   r   r/     r   zReportChannelOption.__init__Nr0   r1   c                 C   s   | j |S r7   )r   r6   r5   r   r   r   r6     s   zReportChannelOption.to_wirec                 C   s   d| j   S )NzREPORTCHANNEL )r   r9   r8   r   r   r   r9     s   zReportChannelOption.to_textr,   r:   c                 C   r   r7   )get_namer<   r   r   r   r=     r   z$ReportChannelOption.from_wire_parserr7   )r   r   r   rX   nameNamer/   r   r   rT   r6   rS   r9   r*   r   r   rA   r   r+   r=   rb   r   r   r[   r   r     s    
r   _type_to_classr,   r1   c                 C   s   t | }|du rt}|S )zReturn the class for the specified option type.

    The GenericOption class is used if a more specific class is not
    known.
    N)r   getrU   )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   rA   currentolenc                 C   sF   t j||}|| t| |W  d   S 1 sw   Y  dS )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)rX   rA   r   Zrestrict_tor   )r,   rA   r   r   r:   r   r   r   option_from_wire  s   $r   implementationc                 C   s   | t |< dS )zRegister 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   )/rR   r   rw   ro   rz   typingr   r   r   r   Zdns.enumrX   Zdns.inetZ	dns.rdataZdns.wireenumIntEnumr   r+   rU   rc   r   r   r   r   r   r"   r(   r   r$   r)   r   __annotations__r   rS   r   rT   rv   r   r   r   r    r!   r#   r%   r&   r'   r   r   r   r   <module>   st   U 
 ="	




