3
NZa'                 @   s   d dl Z d dlZd dlZd dlZd dlZd dlZd dlZddlT ddlm	Z	 ddl
mZmZmZmZ dZdZdZdZd	Zd
ZdZdd Zdd Zdd Zdd Zdd Zdd ZdddZdd Zd ddZdS )!    N   )*)utils)BytesIOto_bytes_utf8to_bytes_latinto_string_latin      !         c             C   s   | | || | |  fS )N )offsetdatalr   r   /usr/share/hplip/base/mdns.py	read_utf81   s    r   c             C   s   | | || | |  fS )Nr   )r   r   r   r   r   r   	read_data4   s    r   c             C   s.   t j|}| | t j|t|| | |  fS )N)structZcalcsizeZunpackr   )r   r   fmtr   r   r   r   read_data_unpack7   s    
r   c       	      C   s   d}| }d
}|}xt |||d  }|d7 }|dkr8P |d@ }|dkrjt|||\}}dj||dg}q|dkr|dk r|d }|d@ d> t |||d  B }||krtjd|  P |}qtjd	|  P qW |dkr|} n|} | |fS )N r   r      .?      z$Bad domain name (circular) at 0x%04xzBad domain name at 0x%04x)ordr   joinlogerror)	r   r   resultoffnextfirstr   tutf8r   r   r   	read_name;   s6     r(   c             C   sB   x<|j dD ].}|jd}| jtjdt| | j| qW d S )Nr   zutf-8z!B)splitencodewriter   packlen)packetnamepZutf8_stringr   r   r   
write_nameg   s    
r1   c          	   C   s  d}d}d}g }t  }t  }x|jd |j  t| ||t  }|dkrX|dkrXP d}t| | tkrpd}|jtjdd|||dd |rt|d |jtjdd |jtjdt	t
 d}	x
| ||t  D ]}
|jd |j  | o|	rd	}	t|d |jtjdd n|jtjd
d |jtjdt	t
 |jtjdd |j }|jtjd
d t||
 |jtjd
d |j | d }|j| |jtjd
| |jd |j|j  qW |j|j  |d7 }|r d}d	}q W |S )Nr   r   Ti   z!HHHHHHz_pdl-datastream._tcp.localz!Bz!HHFz!Hi  z!Ii        )r   seektruncater-   MAX_ANSWERS_PER_PACKETr+   r   r,   r1   	QTYPE_PTR	QCLASS_INtellreadappendgetvalue)answersindexnum_questionsZfirst_packetZpacketsr.   Zanswer_recordnum_answersflagsZfirst_recorddZrdlength_posZrdlengthr   r   r   create_outgoing_packetsn   s\    






rC      c              C   s`  d }y\t j t jt jt j}t j t jt j}|jd	 |j d }|j  |jd tj	d| } W n, t j
k
r   tj
d |r|j  d S X y(|jt jt jd |jt jt jd W n tt j
fk
r   Y nX yJ|jt jt j|  |jt jt jt j|t jd  |jt jt jd W n> tk
rZ } z tj
d|  |rL|j  d S d }~X nX |S )
N1.2.3.48   r   BzNetwork errorr   z0.0.0.0z-Unable to setup multicast socket for mDNS: %s)rE   rF   )socketZAF_INETZ
SOCK_DGRAMZIPPROTO_UDPZconnectZgetsocknamecloseZsetblockingr   r,   r!   r    Z
setsockoptZ
SOL_SOCKETZSO_REUSEADDRZSO_REUSEPORTAttributeErrorZSOL_IPZIP_MULTICAST_TTLZIP_MULTICAST_IFZ	inet_atonZIP_MULTICAST_LOOP	Exception)ttlsxZintfer   r   r   createSocketsWithsetOption   s:    


"rP   c             C   s<  t   ddddddddd}tjdt|   tj| dd d}t|| d	\}\}}}}}}	tjd
||||||	f  xLt|D ]@}
t   t|| \}}t|| d\}\}}tjd|||f  qW d}xht|| |	 D ]R}t   t|| \}}t|| d\}}|d tkrPt	|| d\}}dj
dd |D }tjd|  ||d< q|d tkrt|| \}}tjd|  ||d< |j|jdd q|d tkrt	|| |d \}}i d }}xz|t|k r<t|||d  }|d7 }||||  }y|jd\}}|||< W n tk
r.   Y nX ||7 }qW tjdt|  yd|d  |d< W n( tk
r   tjdt|  Y nX d|kr0|d |d< q|d tkrt|| d\}\}}}t|| \}}|jd d|d!< q|d tkrt	|| d\}}tjd"t|  qtjd#|d   P qW ||fS )$Nr   r   r   0)Znum_devicesZ	num_portsZ
product_idZmacZstatus_codeZdevice2Zdevice3notezIncoming: (%d)r
   )widthz!HHHHHHz3Response: ID=%d FLAGS=0x%x Q=%d A=%d AUTH=%d ADD=%dz!HHzQ: %s TYPE=%d CLASS=%dz!HHiHrD   r   c             S   s   g | ]}t t|qS r   )strr   ).0rN   r   r   r   
<listcomp>   s    z&updateReceivedData.<locals>.<listcomp>zA: %sipzPTR: %sZmdnsz._pdl-datastream._tcp.local.   =zTXT: %sz'MFG:Hewlett-Packard;MDL:%s;CLS:PRINTER;ZtyZdevice1zNO ty Key in txt: %srR   z!HHHz.local.ZhnzAAAA: %szUnknown DNS record type (%d).)update_spinnerr    debugr-   log_datar   ranger(   QTYPE_Ar   r   r7   r;   replace	QTYPE_TXTr   r)   
ValueErrorreprKeyError	QTYPE_SRV
QTYPE_AAAAr!   )r   r=   yr   idrA   r?   r@   Znum_authoritiesZnum_additionalsZquestionr/   typclsr   recordinfor"   rW   Ztxtr#   r   keyvalueZpriorityZweightZportZserverr   r   r   updateReceivedData   sv    


rn   
   c             C   s`  d\}}i }g }t | }|s i S tj }|}|| }	d}
xtj }||	krNP ||kryHxBt|D ]6}tjdt|  tj|dd |j|d||f qbW W n2 tj	k
r } ztj	d|  W Y d d }~X nX ||
7 }|
d	9 }
t
  tj|gg |gd
\}}}|s
q<|jd\}}t|}|r<t||\}}|||d < q<W tjdt|  |j  |S )N224.0.0.251  r   zOutgoing: (%d)r
   )rS   r   z'Unable to send broadcast DNS packet: %sr2   g      ?i @  rW   zFound %d devices)rp   rq   )rP   timerC   r    r[   r-   r\   ZsendtorH   r!   rZ   selectZrecvfromr   rn   rI   )rL   ZtimeoutZ
mcast_addrZ
mcast_portZfound_devicesr=   rM   Znowr$   ZlastZdelayr0   rO   rwr   Zaddrrf   r   r   r   detectNetworkDevices/  sH     rv   )rD   )rD   ro   )sysrr   rH   rs   r   Zrandomregr   r   Zsixextr   r   r   r   r6   r^   r`   rd   re   r7   r8   r   r   r   r(   r1   rC   rP   rn   rv   r   r   r   r   <module>   s2   ,M
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