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Zdd� ZeeB fdd�Zd!dd �Zd"d d �Zd d� Z dd� Z ddddddddde f dd�Z ddddddddde f dd�Z d#dd�Zdd� Zdd� Zdd � Zd d � Zd d � ZdS )$�L2tpc O s( t j| g|�R i |�� | �tt� d S )N)r �__init__�bind�L2TP_GENL_NAMEr, )�self�args�kwargsri ri rj rm � s z L2tp.__init__c C s | j || j|d�S )N)�msg_type� msg_flags)Z nlm_requestZprid)rp �msgrt ri ri rj � _do_request� s zL2tp._do_requestNr �udpc C s t � }||d< t|d< |d �d|g� |tkrT|d �d|g� |d �d|g� |dkrp|d �dtg� n|d kr�|d �dtg� |r�|d �d |g� �n@d }|r�|�d �d kr�d}|dkr�|d �d|g� n|d �d|g� d }|�r:|�d �d k�r d}|dk�r(|d �d|g� n|d �d|g� |�rX|�rX||k�rXtd��|d k�r�|tk�r�| �r�|d �d| g� | �r�|d �d| g� | �r�|d �ddg� | �r�|d �ddg� | �r�|d �ddg� |du�r |d �d|g� | �|�S ) a4 Send L2TP tunnel create or modify commands :param cmd: Netlink command to use :param tunnel_id: local tunnel id :param peer_tunnel_id: remote tunnel id :param protocol: L2TP version :param remote: IP address of the remote peer :param local: IP address of the local interface :param fd: file descriptor of socket to use :param encap: encapsulation type of the tunnel (udp, ip) :param udp_sport: UDP source port to be used for the tunnel :param udp_dport: UDP destination port to be used for the tunnel :param udp_csum: control if IPv4 UDP checksums should be calculated and checked :param udp6_csum_rx: control if IPv6 UDP rx checksums should be calculated :param udp6_csum_tx: control if IPv6 UDP tx checksums should be calculated :param debug: enable or disable debugging using kernel printk for the tunnel :return: Netlink response �cmd�version�attrsr9 r; r7 �ipr1 rw rJ r �:���r rT rK rV rM z.Local and remote peer address version mismatchrN rO r> TrW rY NrC ) r, �L2TP_GENL_VERSION�append�L2TP_CMD_TUNNEL_CREATE�L2TP_ENCAPTYPE_IP�L2TP_ENCAPTYPE_UDP�find� ValueErrorrv )rp rx � tunnel_id�peer_tunnel_id�protocol�remote�local�fd�encap� udp_sport� udp_dport�udp_csum� udp6_csum_rx� udp6_csum_tx�debugru Zlocal_ip_versionZremote_ip_versionri ri rj � _send_tunnel� s\ ' � zL2tp._send_tunnelFc C s^ |s t d��|st d��|dkr8|s,t d��| s8t d��| jt||||||||| | | | | d�S )a� Create a new L2TP tunnel :param tunnel_id: local tunnel id :param peer_tunnel_id: remote tunnel id :param protocol: L2TP version :param remote: IP address of the remote peer :param local: IP address of the local interface :param fd: file descriptor of socket to use :param encap: encapsulation type of the tunnel (udp, ip) :param udp_sport: UDP source port to be used for the tunnel :param udp_dport: UDP destination port to be used for the tunnel :param udp_csum: control if IPv4 UDP checksums should be calculated and checked :param udp6_csum_rx: control if IPv6 UDP rx checksums should be calculated :param udp6_csum_tx: control if IPv6 UDP tx checksums should be calculated :param debug: enable or disable debugging using kernel printk for the tunnel :return: Netlink response zremote endpoint missingzlocal endpoint missingrw z8udp_sport is required when UDP encapsulation is selectedz8udp_dport is required when UDP encapsulation is selected)rx r� r� r� r� r� r� r� r� r� r� r� r� r� )r� r� r� )rp r� r� r� r� r� r� r� r� r� r� r� r� r� ri ri rj � create_tunnel� s: &���zL2tp.create_tunnelc C s | j t||d�S )z� Modify an existing L2TP tunnel :param tunnel_id: local tunnel id :param debug: enable or disable debugging using kernel printk for the tunnel :return: netlink response )r� r� )r� �L2TP_CMD_TUNNEL_MODIFY)rp r� r� ri ri rj � modify_tunnelF s �zL2tp.modify_tunnelc C s2 t � }t|d< t|d< |d �d|g� | �|�S )z� Delete a tunnel :param tunnel_id: tunnel id of the tunnel to be deleted :return: netlink response rx ry rz r9 )r, �L2TP_CMD_TUNNEL_DELETEr~ r rv �rp r� ru ri ri rj � delete_tunnelR s zL2tp.delete_tunnelc C s� t � }||d< t|d< |d �d|g� |d �d|g� |tkrb|rZ|d �d|g� ntd��|rx|d �d|g� |tkr�|d kr�t}nt}|d �d |g� |r�t|�d d vr�td ��|d �d|g� |�rt|�d d vr�td��|d �d|g� | du�r |d �d| g� | dk�rN|d �ddg� |d �ddg� n:| dk�rl|d �ddg� n | dk�r�|d �ddg� | �r�|d �d| g� | du�r�|d �d| g� |tk�r�|d �d| g� | �|�S ) a` Send session create or modify commands :param cmd: Netlink command to use :param tunnel_id: local tunnel id :param session_id: local session id :param peer_session_id: remote session id :param ifname: interface name :param l2spec_type: layer2 specific header type of the session :param cookie: local cookie value to be assigned to the session :param peer_cookie: remote cookie value to be assigned to the session :param debug: enable or disable debugging using kernel printk for the session :param seq: controls sequence numbering to prevent or detect out of order packets :param lns_mode: LNS mode :param recv_timeout: Reorder timeout :param pwtype: pseudowire type :return: netlink response rx ry rz r9 r< r= z0peer_session_id required when creating a sessionr8 r. r5 r )r r z(cookie must be either 8 or 16 hex digitsr@ z-peer_cookie must be either 8 or 16 hex digitsrB NrC ZbothrD TrE �recv�sendrF rH r/ ) r, r~ r �L2TP_CMD_SESSION_CREATEr� �L2TP_L2SPECTYPE_NONE�L2TP_L2SPECTYPE_DEFAULT�lenrv )rp rx r� � session_id�peer_session_id�ifname� l2spec_type�cookie� peer_cookier� �seq�lns_mode� recv_timeout�pwtyperu Zl2spec_type_valueri ri rj � _send_session_ s\ #��� zL2tp._send_sessionc C s( | j t||||||||| | | | d� dS )a, Add a new session to a tunnel :param tunnel_id: local tunnel id :param session_id: local session id :param peer_session_id: remote session id :param ifname: interface name :param l2spec_type: layer2 specific header type of the session :param cookie: local cookie value to be assigned to the session :param peer_cookie: remote cookie value to be assigned to the session :param debug: enable or disable debugging using kernel printk for the session :param seq: controls sequence numbering to prevent or detect out of order packets :param lns_mode: LNS mode :param recv_timeout: Reorder timeout :param pwtype: pseudowire type :return: netlink response ) rx r� r� r� r� r� r� r� r� r� r� r� r� N)r� r� ) rp r� r� r� r� r� r� r� r� r� r� r� r� ri ri rj �create_session� s !�zL2tp.create_sessionc C s | j t||||||d� dS )a� Modify an existing session :param tunnel_id: local tunnel id :param session_id: local session id :param debug: enable or disable debugging for the session :param seq: controls sequence numbering to prevent or detect out of order packets :param lns_mode: LNS mode :param recv_timeout: Reorder timeout :return: netlink response )rx r� r� r� r� r� r� N)r� �L2TP_CMD_SESSION_MODIFY)rp r� r� r� r� r� r� ri ri rj �modify_session� s �zL2tp.modify_sessionc C sD t � }t|d< t|d< |d �d|g� |d �d|g� | �|�S )z� Delete a session :param tunnel_id: tunnel id in which the session to be deleted is located :param session_id: session id of the session to be deleted :return:z rx ry rz r9 r< )r, �L2TP_CMD_SESSION_DELETEr~ r rv �rp r� r� ru ri ri rj �delete_session s zL2tp.delete_sessionc C s: t � }t|d< t|d< |d �d|g� | j|td�d S )z| Get one tunnel :param tunnel_id: tunnel id of the tunnel to show :return: netlink response rx ry rz r9 �rt r )r, �L2TP_CMD_TUNNEL_GETr~ r rv r r� ri ri rj � get_tunnel s zL2tp.get_tunnelc C s( t � }t|d< t|d< | j|ttB d�S )zD Dump all tunnels :return: netlink response rx ry r� )r, r� r~ rv r r r� ri ri rj � dump_tunnels( s zL2tp.dump_tunnelsc C sL t � }t|d< t|d< |d �d|g� |d �d|g� | j|td�d S )z� Get one session :param tunnel_id: tunnel id of the session :param session_id: session id of the session :return: netlink response rx ry rz r9 r< r� r )r, �L2TP_CMD_SESSION_GETr~ r rv r r� ri ri rj � get_session2 s zL2tp.get_sessionc C s( t � }t|d< t|d< | j|ttB d�S )zE Dump all sessions :return: netlink response rx ry r� )r, r� r~ rv r r )rp ru ri ri rj � dump_sessionsA s zL2tp.dump_sessions) Nr NNNrw NNNNNN) r NNNrw NNNNNF)NNNN)re rf rg rm r r rv r� r� r� r� �L2TP_PWTYPE_ETHr� r� r� r� r� r� r� r� ri ri ri rj rl � sz � g � H � b� 5 � rl N)NZpyroute2.netlinkr r r r r r Zpyroute2.netlink.genericr ro r~ Z L2TP_CMD_NOOPr� r� r� r� r� r� r� r� r- r/ r1 r2 r3 r5 r6 r7 r8 r9 r; r< r= r> r? r@ rB rC rD rE rF rG rH rJ rK rM rN rO rP rQ rR rT rV rW rY rZ r[ r\ r] r^ r_ r` ra rb rc rd ZL2TP_PWTYPE_NONEZL2TP_PWTYPE_ETH_VLANr� ZL2TP_PWTYPE_PPPZL2TP_PWTYPE_PPP_ACZL2TP_PWTYPE_IPr� r� r� r� r, rl ri ri ri rj �<module> s� :
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