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rw d SXn X| d k r d S| S( sÎ 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 rđ | d j rđ | d j rđ t | d } t | d } | d k rđ | d k rđ | | k rÍ | | f S| | k ră | | f S| f Sqđ n g } xt t | d d D]÷ } t d j | | } d j | | } t | d k rŃt | } | d k r| d k r| | k r| j | | f qÎ| | k rť| j | | f qÎ| 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
t i i s %ss %s%s%sN( R R' R( R7 R3 ( R. t delimitert _range( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR { s c C s t | } t | } t | d k r> | t | d k St | d k r | t | d k r | t | d k r t St S( Ni i i ( R R R3 t Truet False( R. R4 t _portRB ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyt portInPortRange s ,c C s8 y t j t | | } Wn t j k
r3 d SX| S( sŢ 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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getservbyportR( R- R7 ( R. t protot name( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR s
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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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rH t SXn X| d k se | d k ri t St S( Ni i˙ ( R( R* R+ t getprotobynameR- RD RC ( t protocolR= ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR ő s
c C sN | s t | d k r t Sx* d d d d g D] } | | k r0 t Sq0 Wt S( sŹ 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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rR t SXt j j d | sm t Sy, t d | d } | j } Wd QXWn t k
r t SXd | k rž 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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Niţ˙˙˙i˙˙˙˙i i i s '%s': port > 65535s '%s': port is invalids '%s': port is ambiguouss '%s': range start >= end( R R7 R3 R# t debug2RD RC ( R. RB ( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR p s $& &c C s4 | d k r t | S| d k r, t | St Sd S( NRx Ry ( R R RD ( Rz t source( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR 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 Ł s
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Netfilter limits length of chain to (currently) 28 chars.
The longest chain we create is FWDI__allow,
which leaves 28 - 11 = 17 chars for .
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ascii_letterst digitsRC ( t usert c( ( s6 /usr/lib/python2.7/site-packages/firewall/functions.pyR ˇ s -
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