a
    kÄ#dÊ  ã                   @   sš   d Z ddlmZ ddlmZmZ ddlmZ ddlm	Z	 ddl
mZmZmZmZmZmZ G dd„ de	ƒZG d	d
„ d
e	ƒZG dd„ de	ƒZej ee¡ dS )a˜  
CACE Per-Packet Information (PPI) header.

A method for adding metadata to link-layer packets.

For example, one can tag an 802.11 packet with GPS coordinates of where it
was captured, and include it in the PCAP file.

New PPI types should:

 * Make their packet a subclass of ``PPI_Element``
 * Call ``bind_layers(PPI_Hdr, ExamplePPI, pfh_type=0xffff)``

See ``layers/contrib/ppi_cace.py`` for an example.
é    )Úconf)ÚDLT_PPIÚ	PPI_TYPES)Úwarning)ÚPacket)Ú	ByteFieldÚFieldLenFieldÚ
LEIntFieldÚPacketListFieldÚLEShortEnumFieldÚLenFieldc                   @   s2   e Zd ZdZeddeƒedddd�gZdd	„ ZdS )
ÚPPI_Hdrz
PPI HeaderZpfh_typer   Z
pfh_lengthNú<H)Úfmtc                 C   s
   |   d¡S )NzPPI %pfh_type%)Zsprintf)Úself© r   úG/var/www/html/gsl.tools/lib/python3.9/site-packages/scapy/layers/ppi.pyÚ	mysummary3   s    zPPI_Hdr.mysummary)	Ú__name__Ú
__module__Ú__qualname__Únamer   r   r   Úfields_descr   r   r   r   r   r   ,   s
   
þr   c                   @   s(   e Zd ZdZdZdd„ Zedd„ ƒZdS )ÚPPI_ElementzSuperclass for all PPI types.zPPI Elementc                 C   s   d|fS )Nó    r   )r   Úsr   r   r   Úextract_padding;   s    zPPI_Element.extract_paddingc                 C   s   | j stdƒ dS | j jS )NzMissing under-layerr   )Z
underlayerr   Úlen)Zpktr   r   r   Úlength_from>   s    zPPI_Element.length_fromN)r   r   r   Ú__doc__r   r   Ústaticmethodr   r   r   r   r   r   7   s
   r   c                
   @   sb   e Zd ZdZeddƒeddƒeddddd	d
„ d�eddƒedg edd
„ d�gZ	dd„ Z
dd„ ZdS )ÚPPIz#Per-Packet Information header (PPI)Úversionr   Úflagsr   NÚheadersr   c                 C   s   |d S ©Né   r   )ÚpÚxr   r   r   Ú<lambda>M   r   zPPI.<lambda>)Z	length_ofr   ÚadjustÚdltc                 C   s
   | j d S r%   )r   )r'   r   r   r   r)   P   r   )r   c                 C   s>   t  | |¡ |  d¡d u r:t|t ƒr:|  dtj |j¡¡ d S ©Nr+   )	r   Úadd_payloadÚgetfieldvalÚ
isinstanceZsetfieldvalr   Úl2typesÚgetÚ	__class__©r   Úpayloadr   r   r   r-   S   s    zPPI.add_payloadc                 C   s   t j |  d¡t | |¡¡S r,   )r   r0   r1   r.   r   Úguess_payload_classr3   r   r   r   r5   Z   s    ÿzPPI.guess_payload_class)r   r   r   r   r   r   r	   r
   r   r   r-   r5   r   r   r   r   r!   G   s   
ÿÿú
r!   N)r   Zscapy.configr   Z
scapy.datar   r   Zscapy.errorr   Zscapy.packetr   Zscapy.fieldsr   r   r	   r
   r   r   r   r   r!   r0   Úregisterr   r   r   r   Ú<module>   s    