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Brester, Yaroslav Halchenkoz+Copyright (c) 2004-2016 Fail2ban Developers�GPL� N� )�Utils� )� getLoggerc C s t | t�r| S t| �S )z8A little helper to guarantee ip being an IPAddr instance�� isinstance�IPAddr)�ip� r �7/usr/lib/python3/dist-packages/fail2ban/server/ipdns.py�asip' s r � c C s� z7| pt �� } dd� t �| ddt jdt j�D �}|r6| d }d}|D ]}|�|�r.| W S |s2|}q"|W S W n t jyA Y nw t �| �S )z�Get fully-qualified hostname of given host, thereby resolve of an external IPs and name will be preferred before the local domain (or a loopback), see gh-2438 c s s � | ] }|d r|d V qdS )� Nr )�.0�air r r � <genexpr>3 s � � �zgetfqdn.<locals>.<genexpr>Nr �.)�socket� gethostname� getaddrinfo� SOCK_DGRAM� AI_CANONNAME� startswith�error�getfqdn)�name�names�pref�firstr r r r r - s* �� �� � r c @ s~ e Zd Zejddd�Zejddd�Zedd� �Zedd� �Z edd � �Z edd d ��Z ed d� �Z edd� �Z edd� �ZdS )�DNSUtilsi� �, ��maxCount�maxTimec C s� t j�| �}|dur |S t� }d}tjtjftjtj ffD ]G\}}z/t� | d|dtj �D ]"}t |�dk s:t |d �s;q,tt |d d �|�}|jrN|�|� q,W q tyd } z|}W Y d}~q d}~ww |sp|rpt�d| |� t j�| |� |S )z_ Convert a DNS into an IP address using the Python socket module. Thanks to Kevin Drapel. Nr � z4Unable to find a corresponding IP address for %s: %s)r �CACHE_nameToIp�get�setr �AF_INETr �FAM_IPv4�AF_INET6�FAM_IPv6r � IPPROTO_TCP�len�str�isValid�add� Exception�logSys�warning)�dns�ips�saveerr�fam�ipfam�resultr �er r r �dnsToIpS s, ����zDNSUtils.dnsToIpc C sx t j�| d�}|dkr |S z t�| �d }W n tjy2 } zt�d| |� d }W Y d }~nd }~ww t j�| |� |S )Nr r z'Unable to find a name for the IP %s: %s) r �CACHE_ipToNamer' r � gethostbyaddrr r3 �debugr( )r �vr; r r r �ipToNameq s ��zDNSUtils.ipToNamec C sn t � }t�| �}|durt|�}|jr|�|� |dv r5|s5t�| �}|�|� |r5|dkr5t� d| |� |S )z/ Return the IP of DNS found in a given text. N)�yes�warnrC z'Determined IP using DNS Lookup: %s = %s) r( r �searchIPr0 r1 r r< �updater3 r4 )�text�useDns�ipList�plainIPr r r r �textToIp� s �zDNSUtils.textToIpTc C s� dd| f}t j�|�}|du r>d}| rttjfntjtfD ] }z|� }W n ty= } z t�d|� W Y d}~q d}~ww t j� ||� |S )z;Get short hostname or fully-qualified hostname of host self�self�hostnameNr z#Retrieving own hostnames failed: %s) r r= r' r r r r2 r3 r4 r( )�fqdn�keyr rL r; r r r � getHostname� s ���zDNSUtils.getHostnamec C sN d} t j�| �}|du r tdt �d�t �d�g�tdg� }t j�| |� |S )zGet own host names of self)rK r5 N� localhostFTr )r r= r' r( rO )rN r r r r � getSelfNames� s ��zDNSUtils.getSelfNamesc C s� d} t j�| �}|du r;t� }t �� D ]'}z |tt �|d��O }W q ty: } z t�d||� W Y d}~qd}~ww t j�| |� |S )z Get own IP addresses of self)rK r6 NrB z#Retrieving own IPs of %s failed: %s) r r& r' r( rQ rJ r2 r3 r4 )rN r6 rL r; r r r � getSelfIPs� s ��zDNSUtils.getSelfIPsc C s t dd� t�� D ��S )Nc s s � | ]}d |j v V qdS )�:N)�ntoa)r r r r r r � s � z)DNSUtils.IPv6IsAllowed.<locals>.<genexpr>)�anyr rR r r r r � IPv6IsAllowed� s zDNSUtils.IPv6IsAllowedN)T)�__name__� __module__� __qualname__r �Cacher& r= � staticmethodr< rA rJ rO rQ rR rV r r r r r M s" r c s� e Zd ZdZdZdZe�deef �ZdZ dZ e j ddd �Z d Zd Zeej Zeej Zef� fd d � Zedd� �Zefdd�Zdd� Zdd� Zdd� Ze dd� �Z e dd� �Z ejd ejd iZ e d d � �Z e d d!� �Z!e d"d#� �Z"e d$d%� �Z#e d&d'� �Z$d(d)� Z%d*d+� Z&d,d-� Z'd.d/� Z(d0d1� Z)d2d3� Z*e d4d5� �Z+e d6d7� �Z,dLd8d9�Z-d:d;� Z.e d<d=� �Z/e d>d?� �Z0d@dA� Z1dBdC� Z2dDdE� Z3e3� Z4e dFdG� �Z5edHdI� �Z6edJdK� �Z7� Z8S )Mr z7Encapsulate functionality for IPv4 and IPv6 addresses z(?:\d{1,3}\.){3}\d{1,3}z;(?:[0-9a-fA-F]{1,4}::?|::){1,7}(?:[0-9a-fA-F]{1,4}|(?<=:):)z%^(?:(?P<IPv4>%s)|\[?(?P<IPv6>%s)\]?)$N)�_family�_addr�_plen� _maskplen�_rawi' r! r" ������c s� |t jkrtt | ��| �}|�||� |S ||f}t j�|�}|d ur%|S |t jkrFt �|�\}}||f}|t jkrFt j�|�}|d urF|S tt | ��| �}|�||� |j t jkrat j� ||� |S �N) r �CIDR_RAW�super�__new__� _IPAddr__init� CACHE_OBJr' � CIDR_UNSPEC�_IPAddr__wrap_ipstrr\ r( )�cls�ipstr�cidrr �args�� __class__r r rf � s( zIPAddr.__new__c C s� t | �dkr| d dkr| d dkr| dd� } d| vr!| tjfS | �dd�}t |�dkr4td| f ��d |d v s@d |d v rIt�|d �|d< t|d �|d< |S ) Nr r �[rb �]r �/z.invalid ipstr %r, too many plen representationr rS )r. r ri �split� ValueError� masktoplen�int)rl �sr r r � __wrap_ipstr s $ zIPAddr.__wrap_ipstrc C s� t j| _d| _d| _d| _|| _|tjkr�|dur%|tjk r%tj| g}nt j t j g}|D ]}z t � ||�}|| _W n t j yE Y q-w | jt j krtt �d|�\| _d| _|durp|dkrrd|? }| j|M _|| _dS dS dS | jt j kr�t �d|�\}}|d> |B | _d| _|dur�|dkr�d |? }| j|M _|| _dS | �tj�r�|d@ | _t j | _d| _dS dS dS tj| _dS ) zP initialize IP object by converting IP address string to binary to integer r N�!L� � �� �!QQ�@ � � ��������� )r � AF_UNSPECr\ r] r^ r_ r` r rd r) r+ � inet_ptonr �struct�unpack�isInNet� IP6_4COMPAT)rK rl rm �family�binary�mask�hi�lor r r �__init sP � � � z IPAddr.__initc C � t | j�S rc )�reprrT �rK r r r �__repr__P � zIPAddr.__repr__c C s t | jt�r | jS t| j�S rc )r rT r/ r� r r r �__str__S s zIPAddr.__str__c C s t | jffS )z�IPAddr pickle-handler, that simply wraps IPAddr to the str Returns a string as instance to be pickled, because fail2ban-client can't unserialize IPAddr objects )r/ rT r� r r r � __reduce__V s zIPAddr.__reduce__c C � | j S rc )r] r� r r r �addr^ � z IPAddr.addrc C r� rc )r\ r� r r r r� b r� z IPAddr.family�inet4�inet6c C s t j�| j�S rc )r �FAM2STRr' r\ r� r r r � familyStrg s zIPAddr.familyStrc C r� rc )r^ r� r r r �plenk r� z IPAddr.plenc C r� )zlThe raw address Should only be set to a non-empty string if prior address conversion wasn't possible )r` r� r r r �rawo s z IPAddr.rawc C s | j tjkS )z6Either the object corresponds to a valid IP address )r\ r r� r� r r r r0 x � zIPAddr.isValidc C s | j tjdtjdi�| jd�kS )zIReturns whether the object is a single IP address (not DNS and subnet) r{ r i���)r^ r r) r+ r' r\ r� r r r �isSingle~ s zIPAddr.isSinglec C s~ | j tjkrt|t�s| j|kS t|t�s |d u rdS t|�}| j |j kr'dS | j tjkr3| j|jkS | j|jko>| j|jkS �NF) r\ r rd r r` r r� r] r^ �rK �otherr r r �__eq__� s �z IPAddr.__eq__c C s | |k S rc r r� r r r �__ne__� r� z IPAddr.__ne__c C sV | j tjkrt|t�s| j|k S t|t�s |d u rdS t|�}| j |j k p*| j|jk S r� )r\ r rd r r` r] r� r r r �__lt__� s z IPAddr.__lt__c C s t |t�s t|�}d| |f S �Nz%s%sr r� r r r �__add__� � zIPAddr.__add__c C s t |t�s t|�}d|| f S r� r r� r r r �__radd__� r� zIPAddr.__radd__c C r� rc )�hashrT r� r r r �__hash__� s zIPAddr.__hash__c C s0 | j tjkr d| j S | j tjkrd| j S dS )z<Hex representation of the IP address (for debug purposes) z%08xz%032xr )r\ r r) r] r+ r� r r r �hexdump� s zIPAddr.hexdumpc C s� d}| j rt�d| j�}| jr| jdk rd| j }n%| jr<| jd? }| jd@ }t�d||�}| jr;| jdk r;d| j }n| jS t�| j |�| S ) zi represent IP object as text like the deprecated C pendant inet.ntoa but address family independent r rz r{ z/%dr~ l ���� r} r ) �isIPv4r� �packr] r^ �isIPv6r` r � inet_ntopr\ )rK r1 r� r� r� r r r rT � s � �z IPAddr.ntoac C sT | j r| j�d�}|du rd}n| jr | j}|du r d}ndS dd�t|��|f S )a return the DNS PTR string of the provided IP address object If "suffix" is provided it will be appended as the second and top level reverse domain. If omitted it is implicitly set to the second and top level reverse domain of the according IP address family r Nz in-addr.arpa.z ip6.arpa.r z%s.%s)r� rT rt r� r� �join�reversed)rK �suffix� exploded_ipr r r �getPTR� s ��z IPAddr.getPTRc C s t �| j�S )z?Return the host name (DNS) of the provided IP address object )r rA rT r� r r r �getHost� s zIPAddr.getHostc C � | j tjkS )z4Either the IP object is of address family AF_INET )r� r r) r� r r r r� � r� z IPAddr.isIPv4c C r� )z5Either the IP object is of address family AF_INET6 )r� r r+ r� r r r r� � r� z IPAddr.isIPv6c C sl |j s|jdkr| t�|j�v S | j|jkrdS | jr"d|j? }n | jr,d|j? }ndS | j|@ |jkS )z9Return either the IP object is in the provided network r Fr| r� ) r0 r� r r< r� r� r� r� r� )rK �netr� r r r r� � s zIPAddr.isInNetc C s t |t�o || kp |�| �S )z;Return whether the object (as network) contains given IP )r r r� )rK r r r r �contains s zIPAddr.containsc C sl dd> d } d}| d|dddi}d}t dd�D ] }|d|> O }|dk r+d| |||A < d| ||| A < q|S )Nr r r| r{ r � � )�range)�m6�m4�mmap�m�ir r r � __getMaskMap s zIPAddr.__getMaskMapc C sF d}| j d ur | j S tj�| j�}|d u r tdt| �f ��|| _ |S )Nr z'invalid mask %r, no plen representation)r_ r �MAP_ADDR2MASKPLENr' r] ru r/ )rK �mplenr r r �maskplen s zIPAddr.maskplenc C s t | �jS )zIConvert mask string to prefix length To be used only for IPv4 masks )r r� )r� r r r rv ' s zIPAddr.masktoplenc C s4 t j�| �}|s dS |�d�}|dkr|S |�d�S )zBSearch if text is an IP address, and return it if so, else None N�IPv4r �IPv6)r � IP_4_6_CRE�match�group)rF r� rl r r r rD / s zIPAddr.searchIPrc )9rW rX rY �__doc__�IP_4_RE�IP_6_RE�re�compiler� r� � __slots__r rZ rh rd ri r r) r* r+ r, rf r[ rj rg r� r� r� �propertyr� r� r� r� r� r� r0 r� r� r� r� r� r� r� r� rT r� r� r� r� r� r� �_IPAddr__getMaskMapr� r� rv rD � __classcell__r r ro r r � s| � 7 r z ::ffff:0:0�` )r )� __author__� __copyright__� __license__r r� r� �utilsr �helpersr rW r3 r r r �objectr r� r r r r �<module> s" g
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