a
    !f-                     @   s   d dl Z d dlZd dlZd dlmZmZmZmZ d dlm	Z	m
Z
mZmZmZmZmZmZ d dlmZmZ d dlmZ d dlmZmZ dZdZdZed	Zed
ZedZG dd deZG dd deZ dS )    N)ChunkedReaderLengthReader	EOFReaderBody)InvalidHeaderInvalidHeaderName
NoMoreDataInvalidRequestLineInvalidRequestMethodInvalidHTTPVersionLimitRequestLineLimitRequestHeaders)InvalidProxyLineForbiddenProxyRequest)InvalidSchemeHeaders)bytes_to_strsplit_request_urii  i   z%[\x00-\x1F\x7F()<>@,;:\[\]={} \t\\\"]z[A-Z0-9$-_.]{3,20}zHTTP/(\d+)\.(\d+)c                   @   s4   e Zd Zdd Zdd Zdd Zdd Zd	d
 ZdS )Messagec                 C   s   || _ || _|| _d | _g | _g | _d | _|jr4dnd| _|j	| _	| j	dksV| j	t
kr\t
| _	|j| _| jdk rtt| _| jp|t}| j	|d  d | _| | j}| j| |   d S )Nhttpshttpr         )cfgunreader	peer_addrversionheadersZtrailersbodyZis_sslschemelimit_request_fieldsMAX_HEADERSlimit_request_field_sizeDEFAULT_MAX_HEADERFIELD_SIZEmax_buffer_headersparseunreadset_body_reader)selfr   r   r   Zmax_header_field_sizeZunused r(   V/var/www/html/python-backend/venv/lib/python3.9/site-packages/gunicorn/http/message.py__init__   s2    


zMessage.__init__c                 C   s
   t  d S N)NotImplementedError)r'   r   r(   r(   r)   r$   :   s    zMessage.parsec                 C   s  | j }g }dd |dD }d}i }d|jv sLt| jtrL| jd |jv rR|j}|rt|| jkrnt	d|
d}t|}|ddk rt| |dd	\}	}
| j jr|	d
 }	n|	 }	t|	rt|	|	 |
 g }	}
|rN|d drN|
d}|t|7 }|| j  kr6dkrBn nt	d|
| qd|
 }
|| j  krvdkrn nt	d|	|v r|
||	 k}|rdnd}|r|| jkrt n
d}|| _||	|
f qR|S )Nc                 S   s   g | ]}t |d  qS )z
r   ).0liner(   r(   r)   
<listcomp>B       z)Message.parse_headers.<locals>.<listcomp>   
F*r   zlimit request headers fields:   z 	) 	z!limit request headers fields size r   r   T)r   splitZforwarded_allow_ips
isinstancer   tuplesecure_scheme_headerslenr   r   popfindr   stripZstrip_header_spacesrstripupper	HEADER_REsearchr   lstrip
startswithr!   appendjoinr   r   )r'   datar   r   linesZscheme_headerr<   currheader_lengthnamevaluesecurer   r(   r(   r)   parse_headers=   sX    





zMessage.parse_headersc                 C   s   d}d }| j D ]B\}}|dkr8|d ur2td| d|}q|dkr| dkrd}q|rjtt| | j| _nl|d urzt|}W n ty   td| dY n0 |dk rtd| dtt	| j|| _ntt
| j| _d S )NFzCONTENT-LENGTH)reqzTRANSFER-ENCODINGchunkedTr   )r   r   lowerr   r   r   r   int
ValueErrorr   r   )r'   rR   content_lengthrM   rN   r(   r(   r)   r&   |   s*    zMessage.set_body_readerc                 C   sN   | j D ]<\}}|dkr|  }|dkr0 dS |dkr> dS  qDq| jdkS )NZ
CONNECTIONcloseTz
keep-aliveF)r5   r   )r   rS   r@   r   )r'   hvr(   r(   r)   should_close   s    zMessage.should_closeN)__name__
__module____qualname__r*   r$   rP   r&   rZ   r(   r(   r(   r)   r      s
   ?r   c                       sf   e Zd Zd fdd	ZdddZdd Zdd
dZdd Zdd Zdd Z	dd Z
 fddZ  ZS )Requestr5   c                    s`   d | _ d | _d | _d | _d | _|j| _| jdk s:| jtkr@t| _|| _d | _t	 
||| d S Nr   )methoduripathqueryfragmentlimit_request_lineMAX_REQUEST_LINE
req_numberproxy_protocol_infosuperr*   )r'   r   r   r   rg   	__class__r(   r)   r*      s    
zRequest.__init__Fc                 C   s0   |  }|s"|rt t| || d S r+   )readStopIterationr   getvaluewrite)r'   r   bufstoprI   r(   r(   r)   get_data   s    zRequest.get_datac           	      C   s>  t  }| j||dd | ||| j\}}| t|r`t  }|| | ||| j\}}| | t  }|| |	 }|
d}|d d dk}|
d}|d d dk}|dk r|s| || |	 }t|| jkrtdqqq|r| j|dd   dS | |d | | _||d	 d  }d }|S )
NT)rq   s   

r   r2   r   zmax buffer headersr1   r   )ioBytesIOrr   	read_linere   proxy_protocolr   ro   parse_request_linern   r?   r=   r#   r   r   r%   rP   r   )	r'   r   rp   r/   ZrbufrI   idxdoneretr(   r(   r)   r$      s8    





zRequest.parser   c                 C   s   |  }|d}|dkr>||  kr.dkrn qt||qt|d |  krZdkrln ntt||| || |  }q|d | ||d d  fS )Nr2   r   r   )rn   r?   r   r=   rr   )r'   r   rp   limitrI   rx   r(   r(   r)   ru      s    

 

zRequest.read_linec                 C   s>   | j jsdS | jdkrdS |ds(dS |   | | dS )z        Detect, check and parse proxy protocol.

        :raises: ForbiddenProxyRequest, InvalidProxyLine.
        :return: True for proxy protocol line else False
        Fr5   ZPROXYT)r   rv   rg   rF   proxy_protocol_access_checkparse_proxy_protocol)r'   r/   r(   r(   r)   rv      s    


zRequest.proxy_protocolc                 C   s<   d| j jvr8t| jtr8| jd | j jvr8t| jd d S )Nr3   r   )r   Zproxy_allow_ipsr:   r   r;   r   r'   r(   r(   r)   r|     s    
z#Request.proxy_protocol_access_checkc                 C   sl  |  }t|dkrt||d }|d }|d }|dvrHtd| |dkrz ttj| ttj| W q tjy   t|Y q0 nF|dkrz ttj| ttj| W n tjy   t|Y n0 zt|d	 }t|d
 }W n  t	y   td| Y n0 d|  kr,dkrJn nd|  krHdksVn td| |||||d| _
d S )N   r5   r      )TCP4TCP6zprotocol '%s' not supportedr   r   r      zinvalid port %sr   i  )rv   client_addrZclient_portZ
proxy_addrZ
proxy_port)r9   r=   r   socket	inet_ptonAF_INETerrorAF_INET6rT   rU   rh   )r'   r/   bitsprotoZs_addrZd_addrZs_portZd_portr(   r(   r)   r}     sB    6zRequest.parse_proxy_protocolc                 C   s   dd | d dD }t|dkr.tt|t|d sHt|d |d  | _|d | _	zt
| j	}W n ty   tt|Y n0 |jpd| _|jpd| _|jpd| _t|d }|d u rt|d t|dt|df| _d S )Nc                 S   s   g | ]}t |qS r(   r-   )r.   bitr(   r(   r)   r0   G  r1   z.Request.parse_request_line.<locals>.<listcomp>r   r   r   r5   r8   )r9   r=   r	   r   METH_REmatchr
   rB   r`   ra   r   rU   rb   rc   rd   
VERSION_REr   rT   groupr   )r'   Z
line_bytesr   partsr   r(   r(   r)   rw   F  s$    
zRequest.parse_request_linec                    s.   t    t| jjtr*tt| jd| _d S r_   )	ri   r&   r:   r   readerr   r   r   r   r~   rj   r(   r)   r&   a  s    
zRequest.set_body_reader)r5   )F)r   )r[   r\   r]   r*   rr   r$   ru   rv   r|   r}   rw   r&   __classcell__r(   r(   rj   r)   r^      s   
-
-r^   )!rs   rer   Zgunicorn.http.bodyr   r   r   r   Zgunicorn.http.errorsr   r   r   r	   r
   r   r   r   r   r   r   Zgunicorn.utilr   r   rf   r    r"   compilerC   r   r   objectr   r^   r(   r(   r(   r)   <module>   s    (


 