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rw d SXn X| d k r� d S| S( s� Check and Get port id from port string or port id using socket.getservbyname
@param port port string or port id
@return Port id if valid, -1 if port can not be found and -2 if port is too big
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c C s> t | t � s | j � r> t | � } | d k r: | f S| S| j d � } t | � d k r� | d j � r� | d j � r� t | d � } t | d � } | d k r� | d k r� | | k r� | | f S| | k r� | | f S| f Sq� n g } xt t | � d d � D]� } t d j | | � � } d j | | � } t | � d k r�t | � } | d k r| d k r| | k r�| j | | f � q�| | k r�| j | | f � q�| j | f � qq| d k r| j | f � | t | � k rPqqqWt | � d k r d St | � d k r6d S| d S( sI 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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t :c C sr | d k r d St | � } t | t � r; | d k r; d St | � d k rU d | Sd | d | | d f Sd S( s 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
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r3 d SX| S( s� 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. t SXt S( sl Check IPv4 address.
@param ip address string
@return True if address is valid, else False
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This is mostly about converting URL-like IPv6 address to normal ones.
e.g. [1234::4321] --> 1234:4321
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r4 t SXt S( sl Check IPv6 address.
@param ip address string
@return True if address is valid, else False
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c C sN | s t | � d k r t Sx* d d d d g D] } | | k r0 t Sq0 Wt S( s� Check interface string
@param interface string
@return True if interface is valid (maximum 16 chars and does not contain ' ', '/', '!', ':', '*'), else False
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r� t SXd | k r� t St S( sv 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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rV } t j d | | f � t SXt S( Nt ws Failed to write to file "%s": %s( Rb t writeRd R# R- RD RC ( Rr t lineRs Rt ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR R s c C s6 | d k r t d d � S| d k r2 t d d � St S( Nt ipv4s /proc/sys/net/ipv4/ip_forwards 1
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r9 t j d � d SXd S( Ns+ /proc/sys/net/netfilter/nf_conntrack_helperi s3 Failed to get and parse nf_conntrack_helper setting( R( R Rd R# t warning( ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR e s
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rQ d SX| S( s Get parent for pid s ps -o ppid -h -p %d 2>/dev/nulli N( R_ t popenR( Rq R) t closeRd R7 ( Rf Rs ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR � s
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Netfilter limits length of chain to (currently) 28 chars.
The longest chain we create is FWDI_<zone>_allow,
which leaves 28 - 11 = 17 chars for <zone>.
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ascii_letterst digitsRC ( t usert c( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR � s -
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d d k r} t St | d � d k r� t St S( NR? i i i t rooti����t _ui t _ri t _ti ( i i ( R2 R3 RD RC ( t contextR: ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR � s $c C sD d t t � k r) d j d � | D� � Sd j d � | D� � Sd S( Nt quoteRV c s s | ] } t j | � Vq d S( N( t shlexR� ( t .0t a( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pys <genexpr>� s c s s | ] } t j | � Vq d S( N( t pipesR� ( R� R� ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pys <genexpr>� s ( Rk R� R5 ( t args( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR � s c C sN t r= t | t � r= t | � } t j | � } t t | � St j | � Sd S( N( R R' t unicodeR! R� R2 R� R ( t _stringR: ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR � s
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