U <{fR@sZddlmZddlZddlZddlZddlZddlZddlm Z m Z m Z m Z m Z mZmZmZddlmZmZddlmZmZmZmZmZmZmZddlmZmZddlm Z m!Z!m"Z"m#Z#m$Z$dd l%m&Z&m'Z'dd l(m)Z)m*Z*m+Z+m,Z,m-Z-dd lm.Z.m/Z/m0Z0m1Z1m2Z2m3Z3m4Z4dd l5m6Z6dd l7Tddl7m8Z9dge9Z8Gddde,Z:Gddde:Z;dS)) annotationsN)AnyCallable GeneratorListOptionalSequenceTuplecast)HeadersMultipleValuesError)InvalidHandshake InvalidHeaderInvalidHeaderValue InvalidOrigin InvalidStatusInvalidUpgradeNegotiationError) ExtensionServerExtensionFactory)build_extensionparse_connectionparse_extensionparse_subprotocol parse_upgrade)RequestResponse) CONNECTINGOPENSERVERProtocolState)ConnectionOptionExtensionHeader LoggerLikeOrigin StatusLike SubprotocolUpgradeProtocol) accept_key)*)__all__ServerProtocolc seZdZdZddddedddddddd d d dfd d ZdddddZdddddZdddddZdddddZ ddddd Z d!dd"d#d$Z d%d&dd'd(d)Z dd*d+d,d-Z d.d/fd0d1 ZZS)2r-a Sans-I/O implementation of a WebSocket server connection. Args: origins: acceptable values of the ``Origin`` header; include :obj:`None` in the list if the lack of an origin is acceptable. This is useful for defending against Cross-Site WebSocket Hijacking attacks. extensions: list of supported extensions, in order in which they should be tried. subprotocols: list of supported subprotocols, in order of decreasing preference. select_subprotocol: Callback for selecting a subprotocol among those supported by the client and the server. It has the same signature as the :meth:`select_subprotocol` method, including a :class:`ServerProtocol` instance as first argument. state: initial state of the WebSocket connection. max_size: maximum size of incoming messages in bytes; :obj:`None` disables the limit. logger: logger for this connection; defaults to ``logging.getLogger("websockets.client")``; see the :doc:`logging guide <../../topics/logging>` for details. Ni)origins extensions subprotocolsselect_subprotocolstatemax_sizeloggerz$Optional[Sequence[Optional[Origin]]]z*Optional[Sequence[ServerExtensionFactory]]zOptional[Sequence[Subprotocol]]zROptional[Callable[[ServerProtocol, Sequence[Subprotocol]], Optional[Subprotocol]]]r"z Optional[int]zOptional[LoggerLike]csHtjt|||d||_||_||_|dk rDt|d|||jdS)N)Zsider2r3r4r1) super__init__r r.available_extensionsavailable_subprotocolssetattr__get__ __class__)selfr.r/r0r1r2r3r4r;P/var/www/html/Darija-Ai-API/env/lib/python3.8/site-packages/websockets/server.pyr6Ms zServerProtocol.__init__rr)requestreturnc Csz||\}}}Wntk rx}zB||_||_|jrJ|jjddd|tjj d|dWYSd}~XYn"t k r}zP||_||_|jr|jjddd|tjj d|d}d |j d <|WYSd}~XYnt k rF}zD||_||_|jr|jjd dd|tjjd|dWYSd}~XYnTtk r}z4||_||_|jjd dd|tjjd WYSd}~XYnXt}tjjdd|d<d |d <d |d<||d<|dk r||d<|dk r||d<|jdtdd|S)a  Create a handshake response to accept the connection. If the connection cannot be established, the handshake response actually rejects the handshake. You must send the handshake response with :meth:`send_response`. You may modify it before sending it, for example to add HTTP headers. Args: request: WebSocket handshake request event received from the client. Returns: WebSocket handshake response event to send to the client. z! invalid originT)exc_infoz'Failed to open a WebSocket connection: z. Nz! invalid upgradez^. You cannot access a WebSocket server directly with a browser. You need a WebSocket client. websocketUpgradez! invalid handshakezopening handshake failedzLFailed to open a WebSocket connection. See server log for more information. usegmtDate ConnectionzSec-WebSocket-AcceptSec-WebSocket-ExtensionsSec-WebSocket-Protocolzconnection openezSwitching Protocols)process_requestr _exception handshake_excdebugr4rejecthttp HTTPStatus FORBIDDENrUPGRADE_REQUIREDheadersr BAD_REQUEST ExceptionerrorINTERNAL_SERVER_ERRORr emailutils formatdateinfor)r<r@ accept_headerextensions_headerprotocol_headerexcresponserUr>r>r?acceptosn       zServerProtocol.acceptz(Tuple[str, Optional[str], Optional[str]]c Cs|j}tdd|dDg}tdd|DsJtd|rDd|ndtdd|d Dg}t|d kr|d d kstd |rd|ndz |d }WnXtk r}zt d |W5d}~XYn.t k r}zt d d|W5d}~XYnXzt j | dd}Wn2tjk rF}ztd ||W5d}~XYnXt|dkr`td |z |d}Wn\tk r}zt d|W5d}~XYn0t k r}zt dd|W5d}~XYnX|dkrtd|t|} |||_||\} |_||} |_| | | fS)a7 Check a handshake request and negotiate extensions and subprotocol. This function doesn't verify that the request is an HTTP/1.1 or higher GET request and doesn't check the ``Host`` header. These controls are usually performed earlier in the HTTP request handling code. They're the responsibility of the caller. Args: request: WebSocket handshake request received from the client. Returns: Tuple[str, Optional[str], Optional[str]]: ``Sec-WebSocket-Accept``, ``Sec-WebSocket-Extensions``, and ``Sec-WebSocket-Protocol`` headers for the handshake response. Raises: InvalidHandshake: if the handshake request is invalid; then the server must return 400 Bad Request error. cSsg|] }t|qSr>)r.0valuer>r>r? sz2ServerProtocol.process_request..rHcss|]}|dkVqdS)upgradeN)lowerrdr>r>r? sz1ServerProtocol.process_request.., NcSsg|] }t|qSr>)rrdr>r>r?rgsrDr rrCzSec-WebSocket-Keyz,more than one Sec-WebSocket-Key header foundT)validatezSec-WebSocket-Versionz0more than one Sec-WebSocket-Version header foundZ13)rUsumget_allanyrjoinlenriKeyErrorrr base64 b64decodeencodebinasciiErrorrr*process_originoriginprocess_extensionsr/process_subprotocol subprotocol) r<r@rU connectionrhkeyraZraw_keyversionr^r_r`r>r>r?rLsl      zServerProtocol.process_requestr zOptional[Origin])rUrAc Cshzttt|d}Wn.tk rF}ztdd|W5d}~XYnX|jdk rd||jkrdt||S)aY Handle the Origin HTTP request header. Args: headers: WebSocket handshake request headers. Returns: Optional[Origin]: origin, if it is acceptable. Raises: InvalidHandshake: if the Origin header is invalid. InvalidOrigin: if the origin isn't acceptable. r&z!more than one Origin header foundN)r rr&getr rr.r)r<rUrzrar>r>r?ry!s  zServerProtocol.process_originz%Tuple[Optional[str], List[Extension]]c Csd}g}g}|d}|r|jrtdd|Dg}|D]j\}}|jD]Z} | j|krVqFz| ||\} } Wntk rYqFYnX||| f|| q8qFq8|rt|}||fS)a Handle the Sec-WebSocket-Extensions HTTP request header. Accept or reject each extension proposed in the client request. Negotiate parameters for accepted extensions. Per :rfc:`6455`, negotiation rules are defined by the specification of each extension. To provide this level of flexibility, for each extension proposed by the client, we check for a match with each extension available in the server configuration. If no match is found, the extension is ignored. If several variants of the same extension are proposed by the client, it may be accepted several times, which won't make sense in general. Extensions must implement their own requirements. For this purpose, the list of previously accepted extensions is provided. This process doesn't allow the server to reorder extensions. It can only select a subset of the extensions proposed by the client. Other requirements, for example related to mandatory extensions or the order of extensions, may be implemented by overriding this method. Args: headers: WebSocket handshake request headers. Returns: Tuple[Optional[str], List[Extension]]: ``Sec-WebSocket-Extensions`` HTTP response header and list of accepted extensions. Raises: InvalidHandshake: if the Sec-WebSocket-Extensions header is invalid. NrIcSsg|] }t|qSr>)rre header_valuer>r>r?rgksz5ServerProtocol.process_extensions..)ror7rnnameZprocess_request_paramsrappendr) r<rUZresponse_header_valueZextension_headersZaccepted_extensions header_valuesZparsed_header_valuesrZrequest_paramsZ ext_factoryZresponse_params extensionr>r>r?r{;s4'         z!ServerProtocol.process_extensionszOptional[Subprotocol]cCs$tdd|dDg}||S)a Handle the Sec-WebSocket-Protocol HTTP request header. Args: headers: WebSocket handshake request headers. Returns: Optional[Subprotocol]: Subprotocol, if one was selected; this is also the value of the ``Sec-WebSocket-Protocol`` response header. Raises: InvalidHandshake: if the Sec-WebSocket-Subprotocol header is invalid. cSsg|] }t|qSr>)rrr>r>r?rgsz6ServerProtocol.process_subprotocol..rJ)rnror1)r<rUr0r>r>r?r|sz"ServerProtocol.process_subprotocolzSequence[Subprotocol])r0rAcCsR|js dS|stdt|}|jD]}||kr$|Sq$tdd|jdS)a Pick a subprotocol among those offered by the client. If several subprotocols are supported by both the client and the server, pick the first one in the list declared the server. If the server doesn't support any subprotocols, continue without a subprotocol, regardless of what the client offers. If the server supports at least one subprotocol and the client doesn't offer any, abort the handshake with an HTTP 400 error. You provide a ``select_subprotocol`` argument to :class:`ServerProtocol` to override this logic. For example, you could accept the connection even if client doesn't offer a subprotocol, rather than reject it. Here's how to negotiate the ``chat`` subprotocol if the client supports it and continue without a subprotocol otherwise:: def select_subprotocol(protocol, subprotocols): if "chat" in subprotocols: return "chat" Args: subprotocols: list of subprotocols offered by the client. Returns: Optional[Subprotocol]: Selected subprotocol, if a common subprotocol was found. :obj:`None` to continue without a subprotocol. Raises: NegotiationError: custom implementations may raise this exception to abort the handshake with an HTTP 400 error. Nzmissing subprotocolz%invalid subprotocol; expected one of rk)r8rsetrq)r<r0Zproposed_subprotocolsr}r>r>r?r1s*   z!ServerProtocol.select_subprotocolr'str)statustextrAcCszt|}|}tdtjjddfddtt|fdg}t |j |j ||}|j dkrbt ||_ |jd|j |j |S) a. Create a handshake response to reject the connection. A short plain text response is the best fallback when failing to establish a WebSocket connection. You must send the handshake response with :meth:`send_response`. You can modify it before sending it, for example to alter HTTP headers. Args: status: HTTP status code. text: HTTP response body; will be encoded to UTF-8. Returns: Response: WebSocket handshake response event to send to the client. rGTrE)rHclosezContent-Length)z Content-Typeztext/plain; charset=utf-8Nzconnection rejected (%d %s))rQrRrvr rZr[r\rrrrrfphraserNrr4r])r<rrbodyrUrbr>r>r?rPs   zServerProtocol.rejectNone)rbrAcCs|jrf|j|j}}|jd|||jD]\}}|jd||q.|jdk rf|jdt|j|j | |jdkr|j t kst t|_ n|||_t|jdS)z Send a handshake response to the client. Args: response: WebSocket handshake response event to send. z> HTTP/1.1 %d %sz> %s: %sNz> [body] (%d bytes)rK)rO status_codeZ reason_phraser4rU raw_itemsrrrZwritesr serializer2rAssertionErrorrsend_eofdiscardparsernext)r<rbcoderrrfr>r>r? send_response s   zServerProtocol.send_responsezGenerator[(None, None, None)])rAc #s|jtkrzt|jjEdH}WnJtk rl}z,||_|| |_ t |j dVW5d}~XYnX|j r|j d|j|jD]\}}|j d||q|j|tEdHdS)Nz< GET %s HTTP/1.1z< %s: %s)r2rrparsereaderZ read_linerWrNrrrrrOr4pathrUreventsrr5)r<r@rarrfr=r>r?r's"    zServerProtocol.parse)__name__ __module__ __qualname____doc__rr6rcrLryr{r|r1rPrr __classcell__r>r>r=r?r-3s$""YYQ=+cs&eZdZddddfdd ZZS)ServerConnectionrr)argskwargsrAcstdttj||dS)Nz.ServerConnection was renamed to ServerProtocol)warningswarnDeprecationWarningr5r6)r<rrr=r>r?r6?s zServerConnection.__init__)rrrr6rr>r>r=r?r>sr)< __future__rrtrw email.utilsrZrQrtypingrrrrrrr r Zdatastructuresr r exceptionsrrrrrrrr/rrrUrrrrrZhttp11rrprotocolrrr r!r"r#r$r%r&r'r(r)r[r*Z legacy.serverr,Z legacy__all__r-rr>r>r>r?s. ($ $