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__init__.cpython-310.pyc
625
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2024-09-07 23:28
_asyncbackend.cpython-310.pyc
2.66
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_asyncio_backend.cpython-310.pyc
5.03
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_curio_backend.cpython-310.pyc
3.72
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_immutable_attr.cpython-310.pyc
2.1
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_immutable_ctx.cpython-310.pyc
2.1
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_trio_backend.cpython-310.pyc
4
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asyncbackend.cpython-310.pyc
2.58
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asyncquery.cpython-310.pyc
11.21
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asyncresolver.cpython-310.pyc
5.76
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dnssec.cpython-310.pyc
14.21
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e164.cpython-310.pyc
3.08
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edns.cpython-310.pyc
9.56
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entropy.cpython-310.pyc
3.11
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enum.cpython-310.pyc
2.33
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exception.cpython-310.pyc
4.56
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flags.cpython-310.pyc
1.97
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grange.cpython-310.pyc
1.02
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immutable.cpython-310.pyc
2.27
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inet.cpython-310.pyc
3.51
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ipv4.cpython-310.pyc
1.29
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ipv6.cpython-310.pyc
3.22
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2024-09-07 23:28
message.cpython-310.pyc
40.47
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name.cpython-310.pyc
27.34
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namedict.cpython-310.pyc
2.92
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node.cpython-310.pyc
5.72
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opcode.cpython-310.pyc
2.31
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query.cpython-310.pyc
29.35
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rcode.cpython-310.pyc
2.97
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rdata.cpython-310.pyc
19.92
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2024-09-07 23:28
rdataclass.cpython-310.pyc
2.59
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rdataset.cpython-310.pyc
13.65
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rdatatype.cpython-310.pyc
5.84
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renderer.cpython-310.pyc
7.44
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resolver.cpython-310.pyc
40.67
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reversename.cpython-310.pyc
2.86
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rrset.cpython-310.pyc
6.64
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serial.cpython-310.pyc
2.76
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set.cpython-310.pyc
7.49
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tokenizer.cpython-310.pyc
15.77
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transaction.cpython-310.pyc
14.24
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tsig.cpython-310.pyc
9.86
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tsigkeyring.cpython-310.pyc
1.6
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2024-09-07 23:29
ttl.cpython-310.pyc
1.53
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update.cpython-310.pyc
8.01
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version.cpython-310.pyc
542
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versioned.cpython-310.pyc
14.06
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2024-09-07 23:29
wire.cpython-310.pyc
2.91
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2024-09-07 23:29
xfr.cpython-310.pyc
6.18
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2024-09-07 23:29
zone.cpython-310.pyc
31.1
KB
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2024-09-07 23:29
zonefile.cpython-310.pyc
6.86
KB
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2024-09-07 23:29
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Returns a list of ``dns.name.Name``. r �r �r r r r r m s zNXDOMAIN.qnamesc C r- )z�A map from queried names to their NXDOMAIN responses. Returns a dict mapping a ``dns.name.Name`` to a ``dns.message.Message``. r r. r/ r r r r t � zNXDOMAIN.responsesc C s | j d | S )zTThe response for query *qname*. Returns a ``dns.message.Message``. r r. )r r" r r r r# | s zNXDOMAIN.response�N)�__name__� __module__� __qualname__�__doc__� supp_kwargs�fmtr r �propertyr r, r r r# � __classcell__r r r r r 1 s � r c @ � e Zd ZdZdS )�YXDOMAINz8The DNS query name is too long after DNAME substitution.N�r2 r3 r4 r5 r r r r r; � � r; c s* e Zd ZdZdZdhZ� fdd�Z� ZS )�NoAnswerz<The DNS response does not contain an answer to the question.zDThe DNS response does not contain an answer to the question: {query}r# c s t � j|d jd�S )Nr# )�query)r � _fmt_kwargs�question)r r r r r r@ � � zNoAnswer._fmt_kwargs)r2 r3 r4 r5 r7 r6 r@ r9 r r r r r> � s r> c s< e Zd ZdZdZdedd� ZddhZ� fdd �Z� ZS ) � NoNameserversz�All nameservers failed to answer the query. errors: list of servers and respective errors The type of errors is [(server IP address, any object convertible to string)]. Non-empty errors list will add explanatory message () z+All nameservers failed to answer the query.z%s {query}: {errors}N����request�errorsc s\ g }|d D ]}|� d�|d |d rdnd|d |d �� qt� j|d jd �|�d �S ) NrF z Server {} {} port {} answered {}r r �TCP�UDP� � rE z; )r? rF )r& r r r@ rA r )r r �srv_msgs�errr r r r@ � s ��zNoNameservers._fmt_kwargs) r2 r3 r4 r5 r r7 r6 r@ r9 r r r r rC � s rC c @ r: )� NotAbsolutezEAn absolute domain name is required but a relative name was provided.Nr< r r r r rM � r= rM c @ r: )� NoRootSOAzBThere is no SOA RR at the DNS root name. This should never happen!Nr< r r r r rN � r= rN c @ r: )� NoMetaqueriesz DNS metaqueries are not allowed.Nr< r r r r rO � r= rO c @ r: )�NoResolverConfigurationzEResolver configuration could not be read or specified no nameservers.Nr< r r r r rP � r= rP c @ sF e Zd ZdZ ddd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dS )�Answera& DNS stub resolver answer. Instances of this class bundle up the result of a successful DNS resolution. For convenience, the answer object implements much of the sequence protocol, forwarding to its ``rrset`` attribute. E.g. ``for a in answer`` is equivalent to ``for a in answer.rrset``. ``answer[i]`` is equivalent to ``answer.rrset[i]``, and ``answer[i:j]`` is equivalent to ``answer.rrset[i:j]``. Note that CNAMEs or DNAMEs in the response may mean that answer RRset's name might not be the query name. Nc C sX || _ || _|| _|| _|| _|| _|�� | _| jj| _| jj | _ t � � | jj | _ d S r1 )r" �rdtype�rdclassr# � nameserver�port�resolve_chaining�chaining_resultr �answer�rrset�time� minimum_ttl� expiration)r r" rR rS r# rT rU r r r �__init__� s zAnswer.__init__c C sX |dkr| j jS |dkr| j jS |dkr| j jS |dkr | j jS |dkr(| j jS t|��)N�name�ttl�coversrS rR )rY r^ r_ r` rS rR r )r �attrr r r � __getattr__� s zAnswer.__getattr__c C s | j rt| j �p dS �Nr )rY r r/ r r r �__len__� rB zAnswer.__len__c C s | j rt| j �p tt� �S r1 )rY �iterr r/ r r r �__iter__� s zAnswer.__iter__c C s | j d u rt�| j | S r1 �rY � IndexError�r �ir r r � __getitem__� s zAnswer.__getitem__c C s | j d u rt�| j |= d S r1 rg ri r r r � __delitem__� s zAnswer.__delitem__)NN) r2 r3 r4 r5 r] rb rd rf rk rl r r r r rQ � s � rQ c @ s* e Zd ZdZd dd�Zdd� Zdd� Zd S ) �CacheStatisticszCache Statistics r c C s || _ || _d S r1 ��hits�misses)r ro rp r r r r] � � zCacheStatistics.__init__c C s d| _ d| _d S rc rn r/ r r r �reset rq zCacheStatistics.resetc C s t | j| j�S r1 )rm ro rp r/ r r r �clone s zCacheStatistics.cloneN)r r )r2 r3 r4 r5 r] rr rs r r r r rm � s rm c @ s4 e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd S ) � CacheBasec C s t �� | _t� | _d S r1 )� _threading�Lock�lockrm � statisticsr/ r r r r] s zCacheBase.__init__c C s6 | j � | j�� W d � dS 1 sw Y dS )z Reset all statistics to zero.N)rw rx rr r/ r r r �reset_statistics s "�zCacheBase.reset_statisticsc C �2 | j � | jjW d � S 1 sw Y dS )z How many hits has the cache had?N)rw rx ro r/ r r r ro � $�zCacheBase.hitsc C rz )z"How many misses has the cache had?N)rw rx rp r/ r r r rp r{ zCacheBase.missesc C s4 | j � | j�� W d � S 1 sw Y dS )z�Return a consistent snapshot of all the statistics. If running with multiple threads, it's better to take a snapshot than to call statistics methods such as hits() and misses() individually. N)rw rx rs r/ r r r �get_statistics_snapshot s $�z!CacheBase.get_statistics_snapshotN)r2 r3 r4 r] ry ro rp r| r r r r rt s rt c sD e Zd ZdZd� fdd� Zdd� Zdd� Zd d � Zdd d �Z� Z S )�Cachez$Simple thread-safe DNS answer cache.� �r@c s* t � �� i | _|| _t�� | j | _dS )zf*cleaning_interval*, a ``float`` is the number of seconds between periodic cleanings. N)r r] �data�cleaning_intervalrZ � next_cleaning)r r� r r r r] - s zCache.__init__c C sl t � � }| j|kr4g }| j�� D ]\}}|j|kr |�|� q|D ]}| j|= q!t � � }|| j | _dS dS )z&Clean the cache if it's time to do so.N)rZ r� r �itemsr\ r& r� )r �now�keys_to_delete�k�vr r r � _maybe_clean7 s � �zCache._maybe_cleanc C s� | j �8 | �� | j�|�}|du s|jt�� kr*| j jd7 _ W d � dS | j jd7 _|W d � S 1 s>w Y dS �a! Get the answer associated with *key*. Returns None if no answer is cached for the key. *key*, a ``(dns.name.Name, int, int)`` tuple whose values are the query name, rdtype, and rdclass respectively. Returns a ``dns.resolver.Answer`` or ``None``. Nr ) rw r� r r% r\ rZ rx rp ro )r �keyr� r r r r% E s �$�z Cache.getc C s> | j � | �� || j|< W d � dS 1 sw Y dS �z�Associate key and value in the cache. *key*, a ``(dns.name.Name, int, int)`` tuple whose values are the query name, rdtype, and rdclass respectively. *value*, a ``dns.resolver.Answer``, the answer. N)rw r� r �r r� �valuer r r �putY s "�z Cache.putNc C sn | j �* |dur|| jv r| j|= ni | _t�� | j | _W d � dS W d � dS 1 s0w Y dS �a Flush the cache. If *key* is not ``None``, only that item is flushed. Otherwise the entire cache is flushed. *key*, a ``(dns.name.Name, int, int)`` tuple whose values are the query name, rdtype, and rdclass respectively. N)rw r rZ r� r� )r r� r r r �flushf s ���" z Cache.flush)r~ r1 ) r2 r3 r4 r5 r] r� r% r� r� r9 r r r r r} * s r} c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � LRUCacheNodezLRUCache node.c C s" || _ || _d| _| | _| | _d S rc )r� r� ro �prev�nextr� r r r r] | s zLRUCacheNode.__init__c C s || _ |j| _| |j_ | |_d S r1 �r� r� )r �noder r r � link_after� s zLRUCacheNode.link_afterc C s | j | j_ | j| j _d S r1 r� r/ r r r �unlink� s zLRUCacheNode.unlinkN)r2 r3 r4 r5 r] r� r� r r r r r� y s r� c sL e Zd ZdZd� fdd� Zdd� Zdd� Zd d � Zd d � Zddd�Z � Z S )�LRUCachea` Thread-safe, bounded, least-recently-used DNS answer cache. This cache is better than the simple cache (above) if you're running a web crawler or other process that does a lot of resolutions. The LRUCache has a maximum number of nodes, and when it is full, the least-recently used node is removed to make space for a new one. 順 c s> t � �� i | _| �|� tdd�| _| j| j_| j| j_dS )zl*max_size*, an ``int``, is the maximum number of nodes to cache; it must be greater than 0. N)r r] r � set_max_sizer� �sentinelr� r� �r �max_sizer r r r] � s zLRUCache.__init__c C s |dk rd}|| _ d S )Nr )r� r� r r r r� � s zLRUCache.set_max_sizec C s� | j �] | j�|�}|du r | j jd7 _ W d � dS |�� |jjt�� krA| j|j = | j jd7 _ W d � dS |� | j � | j j d7 _ | j d7 _ |jW d � S 1 scw Y dS r� ) rw r r% rx rp r� r� r\ rZ r� r� r� ro �r r� r� r r r r% � s" � � $�z LRUCache.getc C sf | j �& | j�|�}|du s|jjt�� kr W d � dS |jW d � S 1 s,w Y dS )zBReturn the number of cache hits associated with the specified key.Nr )rw r r% r� r\ rZ ro r� r r r �get_hits_for_key� s �$�zLRUCache.get_hits_for_keyc C s� | j �I | j�|�}|dur|�� | j|j= t| j�| jkr4| jj}|�� | j|j= t| j�| jks t ||�}|� | j� || j|< W d � dS 1 sOw Y dS r� ) rw r r% r� r� r r� r� r� r� r� )r r� r� r� r r r r� � s � "�z LRUCache.putNc C s� | j �C |dur | j�|�}|dur|�� | j|j= n"| jj}|| jkr3|j}|�� |}|| jks%i | _W d � dS W d � dS 1 sIw Y dS r� )rw r r% r� r� r� r� )r r� r� r� r r r r� � s" � ���" zLRUCache.flush)r� r1 ) r2 r3 r4 r5 r] r� r% r� r� r� r9 r r r r r� � s r� c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) � _Resolutiona Helper class for dns.resolver.Resolver.resolve(). All of the "business logic" of resolution is encapsulated in this class, allowing us to have multiple resolve() implementations using different I/O schemes without copying all of the complicated logic. This class is a "friend" to dns.resolver.Resolver and manipulates resolver data structures directly. c C s� t |t�r tj�|d �}tjj�|�}tj�|�rt �tj j �|�}tj � |�r*t �|| _ |�||�| _| jd d � | _|| _|| _|| _|| _i | _tjj| _g | _g | _g | _d | _d| _ d| _ d| _ d | _ d| _ d S )Nr F)!r r �dnsr^ � from_text� rdatatype� RdataType�make� is_metatyperO � rdataclass� RdataClass� is_metaclass�resolver�_get_qnames_to_try� qnames_to_tryr rR rS �tcp�raise_on_no_answer�nxdomain_responses�emptyr" � nameservers�current_nameserversrF rT rU � tcp_attempt�retry_with_tcprE �backoff)r r� r" rR rS r� r� �searchr r r r] s4 z_Resolution.__init__c C s� t | j�dkr�| j�d�| _| jjrX| jj�| j| j| jf�}|dur5|j du r1| j r1t |j d��d|fS | jj�| jt jj| jf�}|durX|j �� t jjkrX|j | j| j< q t j�| j| j| j�}| jjdurw|j| jj| jj| jjd� |�| jj| jj| jj � | jj dur�| jj |_ | jj dd� | _ | jj r�t �!| j � | j dd� | _"g | _#d| _$d| _%d| _&|| _'d| _(|dfS t| j)| jd��)z�Get the next request to send, and check the cache. Returns a (request, answer) tuple. At most one of request or answer will not be None. r N�r# )� algorithmFg�������?r )*r r �popr" r� �cacher% rR rS rY r� r> r# r� r� �ANY�rcoder r� �message� make_query�keyname�use_tsig�keyring� keyalgorithm�use_edns�edns� ednsflags�payload�flagsr� �rotate�random�shuffler� rF rT r� r� rE r� r� )r rX rE r r r � next_request' sX � �� �� �z_Resolution.next_requestc C s� | j r| jd us J �d| _d| _ | j| jddfS d}| js@t| j�dkr,t| j| j d��| jd d � | _| j }t | j d d�| _ | j� d�| _| j j�| j| j j�| _| j| _| j| j| j|fS )NTFr )rE rF rI )r� rT r� rU r� r r� rC rE rF r� �minr� r� �nameserver_portsr% r� )r r� r r r �next_nameserverg s$ �z_Resolution.next_nameserverc C sH |rM|d u sJ �| j �| j| j| j||f� t|tjj�s,t|t �s,t|t �s,t|t �r5| j � | j� dS t|tjj�rK| jrH| j � | j� dS d| _dS |d usSJ �|�� }|tjjkr�zt| j| j| j|| j| j�}W n ty~ | j � | j� Y dS w | jjr�| jj�| j| j| jf|� |jd u r�| j r�t |j d��|dfS |tjj kr�zt| jtj j!tj"j#|�}W n ty� | j � | j� Y dS w || j$| j< | jjr�| jj�| jtj j!| jf|� dS |tjj%kr�t%� }| j �| j| j| j||f� |�|tjj&k�s | jj'�s| j � | j� | j �| j| j| jtj�(|�|f� dS )NT)NFr� )NT))rF r& rT r� rU r r� � exception� FormError�EOFError�OSError�NotImplementedErrorr� �remover� � Truncatedr� r� �NOERRORrQ r" rR rS r! r� r� r� rY r� r> r# r r� r� r� �INr� r; �SERVFAIL�retry_servfail�to_text)r r# �exr� rX �yexr r r � query_result} s� ������ � ��� � � �� � �z_Resolution.query_resultN)r2 r3 r4 r5 r] r� r� r� r r r r r� � s @ r� c @ s� e Zd ZdZd'dd�Zdd� Zdd � Zd d � Zd d � Zdd� Z dd� Z dd� Z dd� Z dd� Z d(dd�Zdd � Zdejjfd d �Zd d ejjfd d!�Zd"d#� Zed$d%� �Zejd&d%� �ZdS ))� BaseResolverr �/etc/resolv.confTc C s< | � � |rtjdkr| �� dS |r | �|� dS dS dS )a� *filename*, a ``str`` or file object, specifying a file in standard /etc/resolv.conf format. This parameter is meaningful only when *configure* is true and the platform is POSIX. *configure*, a ``bool``. If True (the default), the resolver instance is configured in the normal fashion for the operating system the resolver is running on. (I.e. by reading a /etc/resolv.conf file on POSIX systems and from the registry on Windows systems.) r N)rr �sys�platform� read_registry�read_resolv_conf)r �filename� configurer r r r] � s �zBaseResolver.__init__c C s� t j�t j�t�� �dd� �| _t| j�dkr t jj| _g | _ i | _ d| _ g | _ d| _ d| _d| _d| _d| _t jj| _d| _d| _d| _d| _d| _d| _d| _d| _ dS ) z1Reset all resolver configuration to the defaults.r Nr �5 Fg @g @rD ) r� r^ �Namer� �socket� gethostname�domainr �rootr� r� rU r� �use_search_by_default�timeout�lifetimer� r� �tsig�default_algorithmr� r� r� r� r� r� r� r� �ndotsr/ r r r rr � s, � zBaseResolver.resetc C s� t �� ��}t|t�r z |�t|��}W n ty t�w |D ]�}t|�dks3|d dks3|d dkr4q |� � }t|�dk r?q |d dkrN| j � |d � q |d dkrat j �|d �| _g | _q |d dkr~g | _|dd � D ] }| j� t j �|�� qpq |d d kr�|dd � D ]K}|d kr�d | _q�|d kr�| �� q�d|v r�z t|� d�d �| _W q� ttfy� Y q�w d|v r�z t|� d�d �| _W q� ttfy� Y q�w q�q W d � n1 s�w Y t| j �dkr�t�d S )a� Process *f* as a file in the /etc/resolv.conf format. If f is a ``str``, it is used as the name of the file to open; otherwise it is treated as the file itself. Interprets the following items: - nameserver - name server IP address - domain - local domain name - search - search list for host-name lookup - options - supported options are rotate, timeout, edns0, and ndots r �#�;rI rT r r� r� N�optionsr� T�edns0r� �:r� )� contextlib� ExitStackr r � enter_context�openr� rP r �splitr� r& r� r^ r� r� r� r� r� �intr� � ValueErrorrh r� )r �f�stack�l�tokens�suffix�optr r r r� � s` �$ � ����� �.�z BaseResolver.read_resolv_confc C s4 |� d�dkr d}|S |� d�dkrd}|S d}|S )N� r �,)�find)r �entry� split_charr r r �_determine_split_char< s ��z"BaseResolver._determine_split_charc C s@ t |�}| �|�}|�|�}|D ] }|| jvr | j�|� qd S r1 )r r r� r� r& )r r� r �ns_list�nsr r r �_config_win32_nameserversK s ��z&BaseResolver._config_win32_nameserversc C s t j�t|��| _d S r1 )r� r^ r� r r� )r r� r r r �_config_win32_domainT s z!BaseResolver._config_win32_domainc C sH t |�}| �|�}|�|�}|D ]}|| jvr!| j�tj�|�� qd S r1 )r r r� r� r& r� r^ r� )r r� r � search_list�sr r r �_config_win32_searchX s ��z!BaseResolver._config_win32_searchc C s* z t �|d�\}}W n ty d }Y nw |r | �|� |s!|r<zt �|d�\}}|r1| �|� W nA ty; Y n9w z t �|d�\}}W n tyQ d }Y nw |rt| �|� zt �|d�\}}|ri| �|� W n tys Y nw z t �|d�\}}W n ty� d }Y nw |r�| �|� d S d S )N� NameServer�Domain�DhcpNameServer� DhcpDomain� SearchList)�winreg� QueryValueEx� WindowsErrorr r r )r r� �always_try_domain�servers�_�domr� r r r �_config_win32_fromkeya sN � � � � � � ��z"BaseResolver._config_win32_fromkeyc C s� t �dt j�}zlt �|d�}z | �|d� W |�� n|�� w t �|d�}zAd} z-t �||�}|d7 }t �||�}| �|||�sDW q)z | �|d� W |�� n|�� w W n ty` Y nw q*W |�� n|�� w W |�� dS |�� w )z9Extract resolver configuration from the Windows registry.Nz2SYSTEM\CurrentControlSet\Services\Tcpip\ParametersTz=SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfacesr r F) r �ConnectRegistry�HKEY_LOCAL_MACHINE�OpenKeyr �Close�EnumKey�_win32_is_nic_enabled�EnvironmentError)r �lm� tcp_params� interfacesrj �guidr� r r r r� � s< �� �� zBaseResolver.read_registryc C s� zJt �|d| �}z<t �|d�\}}|t jkrt�t �|d| �}z t �|d�\}}|t jkr1t�|d@ W |�� W |�� W S |�� w |�� w tyT Y dS w )Nz]SYSTEM\CurrentControlSet\Control\Network\{4D36E972-E325-11CE-BFC1-08002BE10318}\%s\Connection� PnpInstanceIDz SYSTEM\CurrentControlSet\Enum\%s� ConfigFlagsr F)r r r �REG_SZr� � REG_DWORDr r! ) r r$ r' r �connection_key�pnp_id�ttype� device_keyr� r r r r" � s< ��� �� � �z"BaseResolver._win32_is_nic_enabledNc C sb |d u r| j n|}t�� }|| }|dk r |dk r t|d��|}||kr)t|d��t|| | j�S )Nr rD �r� )r� rZ �Timeoutr� r� )r �startr� r� �durationr r r �_compute_timeout� s z BaseResolver._compute_timeoutc C s� |d u r| j }g }|�� r|�|� |S |�tjj�}|rkt| j�dkr,| jd d � }n| j tjjkr=| j d ur=| j g}ng }| j d u rGd}n| j }|D ] }|�|| � qLt|�|krd|� d|� |S |�|� |S |�|� |S )Nr r ) r� � is_absoluter& � concatenater� r^ r� r r� r� r� �insert)r r" r� r� � abs_qnamer r� r r r r r� � s2 � � �z BaseResolver._get_qnames_to_tryc C s || _ || _|| _dS )z�Add a TSIG signature to each query. The parameters are passed to ``dns.message.Message.use_tsig()``; see its documentation for details. N)r� r� r� )r r� r� r� r r r r� s zBaseResolver.use_tsigr c C s8 |du s|du r d}n|du rd}|| _ || _|| _dS )a+ Configure EDNS behavior. *edns*, an ``int``, is the EDNS level to use. Specifying ``None``, ``False``, or ``-1`` means "do not use EDNS", and in this case the other parameters are ignored. Specifying ``True`` is equivalent to specifying 0, i.e. "use EDNS0". *ednsflags*, an ``int``, the EDNS flag values. *payload*, an ``int``, is the EDNS sender's payload field, which is the maximum size of UDP datagram the sender can handle. I.e. how big a response to this message can be. NFrD Tr )r� r� r� )r r� r� r� r r r r� s zBaseResolver.use_ednsc C s || _ dS )zkOverrides the default flags with your own. *flags*, an ``int``, the message flags to use. N)r� )r r� r r r � set_flags3 r0 zBaseResolver.set_flagsc C s | j S r1 )� _nameserversr/ r r r r� ; s zBaseResolver.nameserversc C s& t |t�r || _dS td�t|����)z� *nameservers*, a ``list`` of nameservers. Raises ``ValueError`` if *nameservers* is anything other than a ``list``. z%nameservers must be a list (not a {})N)r r r: r� r �type)r r� r r r r� ? s �)r� Tr1 )r2 r3 r4 r5 r] rr r� r r r r r r� r" r4 r� r� r� r� r� r� �DEFAULT_EDNS_PAYLOADr� r9 r8 r� �setterr r r r r� � s2 B $% -' � � r� c @ sb e Zd ZdZejjejjddddddfdd�Z ejjejjdddddfdd �Z d d � Z d d � Z dS )�Resolverr FNTr c C s2 t | |||||| �} t�� } | �� \} } | dur| S d}|s�| �� \}}}}|r.t�|� | �| |�}z9tj�|�rX|rJtj j | |||||d�}n"tj j | |||||dd�}nt |�j }|dkrct�tj j| ||d�}W n ty� } z| �d|�\}}W Y d}~q d}~ww | �|d�\} }| dur�| S |r q)a� Query nameservers to find the answer to the question. The *qname*, *rdtype*, and *rdclass* parameters may be objects of the appropriate type, or strings that can be converted into objects of the appropriate type. *qname*, a ``dns.name.Name`` or ``str``, the query name. *rdtype*, an ``int`` or ``str``, the query type. *rdclass*, an ``int`` or ``str``, the query class. *tcp*, a ``bool``. If ``True``, use TCP to make the query. *source*, a ``str`` or ``None``. If not ``None``, bind to this IP address when making queries. *raise_on_no_answer*, a ``bool``. If ``True``, raise ``dns.resolver.NoAnswer`` if there's no answer to the question. *source_port*, an ``int``, the port from which to send the message. *lifetime*, a ``float``, how many seconds a query should run before timing out. *search*, a ``bool`` or ``None``, determines whether the search list configured in the system's resolver configuration are used for relative names, and whether the resolver's domain may be added to relative names. The default is ``None``, which causes the value of the resolver's ``use_search_by_default`` attribute to be used. Raises ``dns.exception.Timeout`` if no answers could be found in the specified lifetime. Raises ``dns.resolver.NXDOMAIN`` if the query name does not exist. Raises ``dns.resolver.YXDOMAIN`` if the query name is too long after DNAME substitution. Raises ``dns.resolver.NoAnswer`` if *raise_on_no_answer* is ``True`` and the query name exists but has no RRset of the desired type and class. Raises ``dns.resolver.NoNameservers`` if no non-broken nameservers are available to answer the question. Returns a ``dns.resolver.Answer`` instance. TNF)r� rU �source� source_port)r� rU r? r@ �raise_on_truncation�httpsr0 )r� rZ r� r� �sleepr4 r� �inet� is_addressr? r� �udpr �schemer� rB r! r� )r r" rR rS r� r? r� r@ r� r� � resolutionr2 rE rX �donerT rU r� r� r# �protocolr� r r r r �resolveQ s` 6� �� �� ����zResolver.resolvec C s* t jdtdd� | �||||||||d� S )a# Query nameservers to find the answer to the question. This method calls resolve() with ``search=True``, and is provided for backwards compatbility with prior versions of dnspython. See the documentation for the resolve() method for further details. z2please use dns.resolver.Resolver.resolve() insteadrI �� stacklevelT��warnings�warn�DeprecationWarningrK ) r r" rR rS r� r? r� r@ r� r r r r? � s ��zResolver.queryc O s. | j tj�|�g|�R tjjtjjd�|��S )a� Use a resolver to run a reverse query for PTR records. This utilizes the resolve() method to perform a PTR lookup on the specified IP address. *ipaddr*, a ``str``, the IPv4 or IPv6 address you want to get the PTR record for. All other arguments that can be passed to the resolve() function except for rdtype and rdclass are also supported by this function. )rR rS )rK r� � reversename� from_addressr� �PTRr� r� )r �ipaddr�argsr r r r �resolve_address� s ���zResolver.resolve_addressc C sL z | j |dd�}|j}W |S tjjy% } z |j}W Y d}~|S d}~ww )a� Determine the canonical name of *name*. The canonical name is the name the resolver uses for queries after all CNAME and DNAME renamings have been applied. *name*, a ``dns.name.Name`` or ``str``, the query name. This method can raise any exception that ``resolve()`` can raise, other than ``dns.resolver.NoAnswer`` and ``dns.resolver.NXDOMAIN``. Returns a ``dns.name.Name``. F�r� N)rK r r� r� r )r r^ rX r �er r r r � s ���zResolver.canonical_name) r2 r3 r4 r5 r� r� �Ar� r� rK r? rW r r r r r r> N s � i � r> c C s t du rt� t S )z7Get the default resolver, initializing it if necessary.N)�default_resolver�reset_default_resolverr r r r �get_default_resolver� s r] c C s t � adS )z�Re-initialize default resolver. Note that the resolver configuration (i.e. /etc/resolv.conf on UNIX systems) will be re-read immediately. N)r> r[ r r r r r\ s r\ FTc C s t � �| ||||||||� S )z�Query nameservers to find the answer to the question. This is a convenience function that uses the default resolver object to make the query. See ``dns.resolver.Resolver.resolve`` for more information on the parameters. )r] rK ) r" rR rS r� r? r� r@ r� r� r r r rK s �rK c C s( t jdtdd� t| |||||||d� S )a Query nameservers to find the answer to the question. This method calls resolve() with ``search=True``, and is provided for backwards compatbility with prior versions of dnspython. See the documentation for the resolve() method for further details. z)please use dns.resolver.resolve() insteadrI rL TrN )r" rR rS r� r? r� r@ r� r r r r? s � �r? c O s t � j| g|�R i |��S )z�Use a resolver to run a reverse query for PTR records. See ``dns.resolver.Resolver.resolve_address`` for more information on the parameters. )r] rW )rU rV r r r r rW . s rW c C s t � �| �S )z�Determine the canonical name of *name*. See ``dns.resolver.Resolver.canonical_name`` for more information on the parameters and possible exceptions. )r] r �r^ r r r r 8 s r c C s� t | t�rtj�| tjj�} |du rt� }| �� s t| �� z|� | tj j ||�}|j j| kr2| W S W n tj jtj jfyB Y nw z| �� } W n tjjyT t�w q )ab Find the name of the zone which contains the specified name. *name*, an absolute ``dns.name.Name`` or ``str``, the query name. *rdclass*, an ``int``, the query class. *tcp*, a ``bool``. If ``True``, use TCP to make the query. *resolver*, a ``dns.resolver.Resolver`` or ``None``, the resolver to use. If ``None``, the default resolver is used. Raises ``dns.resolver.NoRootSOA`` if there is no SOA RR at the DNS root. (This is only likely to happen if you're using non-default root servers in your network and they are misconfigured.) Returns a ``dns.name.Name``. N)r r r� r^ r� r� r] r5 rM rK r� �SOArY r� r r> �parent�NoParentrN )r^ rS r� r� rX r r r � zone_for_nameB s* �� ��rb c C sF |t j@ dkrt| |||||�S |t jt jB @ dkr!t �t jd��| d u r0|d u r0t �t jd��g }g }d }| d u rCt| |||||�S ztj � | � t| |||||�W S t y\ Y nw z^|t j ksh|t j kr�tj| tjjdd�} | j} | j�d�}| jd ur�| jD ]} |�| j� q�|t jks�|t j kr�tj| tjjdd�} | j} | j�d�}| jd ur�| jD ]} |�| j� q�W n tjjy� t �t jd�� t y� t �t j d��w d } z |d u r�d} nt |�} W n$ t �y |t j @ dk�r zt � |�} W n t �y Y nw Y nw | d u �rt �t jd��g } |dk�r't j t j!g}n|g}|t j"@ dk�r5|}nd}|t j k�sC|t j k�rf|D ] }|D ]}t#| D ]}| �t j ||||| ddff� �qO�qI�qE|t jk�sr|t j k�r�|D ] }|D ]}t#| D ]}| �t j||||| ff� �q~�qx�qtt$| �dk�r�t �t jd��| S ) Nr z*Non-recoverable failure in name resolution�Name or service not knownFrX Tz$Temporary failure in name resolution� )%r� �AI_NUMERICHOST�_original_getaddrinfo� AI_ADDRCONFIG� AI_V4MAPPED�gaierror�EAI_FAIL� EAI_NONAMEr� rD �af_for_addressr! �AF_INET6� AF_UNSPEC� _resolverrK r� �AAAAr" r r� rY r& �address�AF_INETrZ r� r � EAI_AGAINr� �AI_NUMERICSERV� getservbyname� SOCK_DGRAM� SOCK_STREAM� AI_CANONNAME�_protocols_for_socktyper )�host�service�family�socktype�protor� �v6addrs�v4addrsr �v6�rdata�v4rU �tuples� socktypesr$ �addrr r r � _getaddrinfo{ s� � � � � � � � � ������ ��� ���r� c C s` | d }| d }t | �dkr| d }tj}nd }tj}t|||tjtjd�}t |�dkr1t�d��|d d d }|tj@ rAd}nd}t j � |�} |tj @ dkr�zt �| d�} | jd j�d �} W n7 t jjt jjfy� |tj@ rzt�tjd ��|} |d ur�| d t|� 7 } Y nw |} |d ur�| d t|� 7 } |tj@ r�t|�} | | fS t�||�} | | fS ) Nr r � rJ z'sockaddr resolved to multiple addressesrF r� rT Trc �%)r r� rm rr r� rw �SOL_TCP�error�NI_DGRAMr� rR rS �NI_NUMERICHOSTro rK rY �targetr� r� r r> � NI_NAMEREQDri rk r �NI_NUMERICSERV� getservbyport) �sockaddrr� rz rU �scoper| r� r� �pnamer" rX �hostnamer{ r r r � _getnameinfo� sN � ��� �r� c C s: | d u rt �� } z t| �\} }}W | S ty Y | S w r1 )r� r� �_gethostbyaddrr! )r^ r r r r �_getfqdn s ��r� c C s t | �d d S )NrI r )�_gethostbyname_exr^ r r r �_gethostbyname s r� c C sT g }g }t | dtjtjtjtj�}|d d }|D ] }|�|d d � q|||fS )Nr rJ r� )r� r� rr rw r� rx r& )r^ �aliases� addressesr� � canonical�itemr r r r� ! s � r� c C s� zt j�| � | dddf}tj}W n' ty8 zt j�| � W n ty. t�tjd��w | df}tj }Y nw t |tj �\}}g }g }t |d|tj tjtj�}|d d }t j�|| �} |D ]} | d d } t j�|| �} | | krx|�| � q`|||fS )N�P r rc rJ r� )r� �ipv6� inet_atonr� rm r! �ipv4ri rk rr r� r� r� rw r� rx rD � inet_ptonr& ) �ipr� r| r^ r r� r� r� r� �bin_ipr� r� �bin_addrr r r r� - s< �� �� � r� c C s: | du rt � } | att_tt_tt_t t_ t t_ t t_dS )a� Override the system resolver routines in the socket module with versions which use dnspython's resolver. This can be useful in testing situations where you want to control the resolution behavior of python code without having to change the system's resolver settings (e.g. /etc/resolv.conf). The resolver to use may be specified; if it's not, the default resolver will be used. resolver, a ``dns.resolver.Resolver`` or ``None``, the resolver to use. 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