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<dictcomp>+ s r, � c C st t | t�r| }nT| r | �� } z t| �}W n: tyb zt�| �}W n tjy\ Y Y dS 0 Y n0 |dkrpdS |S )z� Check and Get port id from port string or port id using socket.getservbyname
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|f� |t|�kr� �q�q�t|�dk �r�dS t|�dk�r�dS |d S )aI Get port range for port range string or single port id
@param ports an integer or port string or port range string
@return Array containing start and end port id for a valid range or -1 if port can not be found and -2 if port is too big for integer input or -1 for invalid ranges or None if the range is ambiguous.
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r �:c C sX | dkr dS t | �}t|t�r*|dk r*dS t|�dkr>d| S d|d ||d f S dS )a Create port and port range string
@param port port or port range int or [int, int]
@param delimiter of the output string for port ranges, default ':'
@return Port or port range string, empty string if port isn't specified, None if port or port range is not valid
� r" Nr: z%sz%s%s%s)r r1 r2 r? )r7 Z delimiter�_ranger( r( r+ r � s r c C s t | �}t |�}t|�dkr�t|�dkr@t|d �t|d �kS t|�dkr�t|d �t|d �kr�t|d �t|d �kr�dS n|t|�dkr�t|�dkr�t|d �t|d �kr�t|d �t|d �kr�t|d �t|d �kr�t|d �t|d �kr�dS dS )Nr: r" r9 TF)r r? r )r7 r@ Z_portrF r( r( r+ �portInPortRange� s. �� ����rG c C sP t | �}t|�dkr$|d |d f}tt |�}ttdd� |�dd� d�}g }|D ]�}|d |d kr�|d |d kr�|�|� qP|d |d kr�|d |d k r�|d |d kr�|�|� |d |d f}qP|d |d krP|d |d krP|d |d krP|�|� |d |d f}qPttdd� |��}|d |d k�rF|d f}|g|fS )z� Coalesce a port range with existing list of port ranges
@param new_range tuple/list/string
@param ranges list of tuple/list/string
@return tuple of (list of ranges added after coalescing, list of removed original ranges)
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rX c C s� t | �} t| �dkr$| d | d f} tt |�}ttdd� |�dd� d�}g }g }|D �]@}| d |d kr�| d |d kr�|�|� qT| d |d kr�| d |d k r�| d |d kr�|�|� |�| d d |d f� qT| d |d k�r8| d |d k�r8| d |d k�r8|�|� |�|d | d d f� qT| d |d krT| d |d k rT|�|� |�|d | d d f� |�| d d |d f� qTttdd� |��}ttdd� |��}||fS ) z� break a port range from existing list of port ranges
@param remove_range tuple/list/string
@param ranges list of tuple/list/string
@return tuple of (list of ranges added after breaking up, list of removed original ranges)
r: r" c S s t | �dkr | d | d fS | S rH rI rJ r( r( r+ rL � rM z breakPortRange.<locals>.<lambda>c S s | d S rN r( rJ r( r( r+ rL � rM rO c S s | d | d kr| d fS | S rQ r( rJ r( r( r+ rL � rM c S s | d | d kr| d fS | S rQ r( rJ r( r( r+ rL � rM rR )Z remove_rangerU rV rW Z added_rangesr@ r( r( r+ �breakPortRange� s6
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rY c C s0 zt �t| �|�}W n t jy* Y dS 0 |S )z� Check and Get service name from port and proto string combination using socket.getservbyport
@param port string or id
@param protocol string
@return Service name if port and protocol are valid, else None
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r c C s. zt �t j| � W n t jy( Y dS 0 dS )zh Check IPv4 address.
@param ip address string
@return True if address is valid, else False
FT)r5 � inet_ptonZAF_INETr6 ��ipr( r( r+ r s
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| � d�S )z� Normalize the IPv6 address
This is mostly about converting URL-like IPv6 address to normal ones.
e.g. [1234::4321] --> 1234:4321
z[])r3 r] r( r( r+ � normalizeIP6 s r_ c C s2 zt �t jt| �� W n t jy, Y dS 0 dS )zh Check IPv6 address.
@param ip address string
@return True if address is valid, else False
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r c C s� | � d�}|dkr<| d |� }| |d d � }|r6|sDdS n| }d }t|�sPdS |r�d|v rdt|�S z t|�}W n ty� Y dS 0 |dk s�|dkr�dS dS ) N�/r. r: F�.r" � T)�findr r2 r4 �r^ �index�addr�maskr* r( r( r+ r * s(
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r c C s` z t | �}W n: tyF zt�| � W n tjy@ Y Y dS 0 Y n0 |dk sX|dkr\dS dS )NFr" � T)r2 r4 r5 Zgetprotobynamer6 )Zprotocolr* r( r( r+ r [ s r c C s: | r6| � � r t| �dk r6dS n| dkr*dS | dkr6dS dS )Ni F�NoneTZpmtu)r= r2 )Ztcp_mss_clamp_valuer( r( r+ r j s r c C s0 | rt | �dkrdS dD ]}|| v r dS qdS )z� Check interface string
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c C s< zt | d�}W n ty" Y dS 0 |dkr8|dkr8dS dS )Nr" Fr/ T�r2 r4 ��valrK r( r( r+ r � s r c C s< zt | d�}W n ty" Y dS 0 |dkr8|dkr8dS dS )Nr" Fl �� Trs rt r( r( r+ r � s r c C s� t j�t�sdS z6ttd��} | �� }W d � n1 s:0 Y W n tyZ Y dS 0 t j�d| �spdS z:td| d��} | �� }W d � n1 s�0 Y W n ty� Y dS 0 d|v r�dS dS )zv Check if firewalld is active
@return True if there is a firewalld pid file and the pid is used by firewalld
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C sv z8t | d��}|�|� W d � n1 s,0 Y W n8 typ } z t�d| |f � W Y d }~dS d }~0 0 dS )N�wz Failed to write to file "%s": %sFT)rz �writer| r# r6 )r� �liner� r� r( r( r+ r � s ,r c C s( | dkrt dd�S | dkr$t dd�S dS )N�ipv4z /proc/sys/net/ipv4/ip_forwardz1
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S d S ) Nr0 r. r9 r" r: z'%s': port > 65535z'%s': port is invalidz'%s': port is ambiguousz'%s': range start >= endFT)r r? r# Zdebug2)r7 rF r( r( r+ r � s
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iptables limits length of chain to (currently) 28 chars.
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which leaves 28 - 11 = 17 chars for <policy>.
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Netfilter limits length of chain to (currently) 28 chars.
The longest chain we create is POST_<zone>_allow,
which leaves 28 - 11 = 17 chars for <zone>.
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