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First, an integer giving the maximum length of the passphrase it may return. If the returned passphrase is longer than this, it will be truncated. Second, a boolean value which will be true if the user should be prompted for the passphrase twice and the callback should verify that the two values supplied are equal. Third, the value given as the *userdata* parameter to :meth:`set_passwd_cb`. The *callback* must return a byte string. If an error occurs, *callback* should return a false value (e.g. an empty string). :param userdata: (optional) A Python object which will be given as argument to the callback :return: None callback must be callableN) callablerGrrr!rrSSL_CTX_set_default_passwd_cbrr)rr!rrrr set_passwd_cbs   zContext.set_passwd_cbcCslt|j}t|dk|dds0tt}tt}|t kr2|t kr4| t t dSdSdSdS)a Specify that the platform provided CA certificates are to be used for verification purposes. 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The default is :const:`FILETYPE_PEM`. :return: None rN)rrErrGrSSL_CTX_use_PrivateKey_filerr)rrrrrrruse_privatekey_files  zContext.use_privatekey_filepkey_PrivateKey | PKeycCsJt|ts t|}ntjdtddt|j|j }|s#| dSdSzs Load a private key from a PKey object :param pkey: The PKey object :return: None z`Passing pyOpenSSL PKey objects is deprecated. You should use a cryptography private key instead.r]r N) rErfrom_cryptography_keyrrrrSSL_CTX_use_PrivateKeyr_pkeyrrr rrrruse_privatekeys   zContext.use_privatekeycCst|js tdSdS)z Check if the private key (loaded with :meth:`use_privatekey`) matches the certificate (loaded with :meth:`use_certificate`) :return: :data:`None` (raises :exc:`Error` if something's wrong) N)rSSL_CTX_check_private_keyrrrrrrcheck_privatekeys  zContext.check_privatekeyrFcCs0ttd|}t|tjkt|j|dS)a% Load the trusted certificates that will be sent to the client. 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If omitted, OpenSSL's default verification is used. :return: None See SSL_CTX_set_verify(3SSL) for further details. r4Nr) rErrGrrrSSL_CTX_set_verifyrr=r^rr r!rr2r!rrr set_verifyWs   zContext.set_verifydepthcC$t|ts tdt|j|dS)z Set the maximum depth for the certificate chain verification that shall be allowed for this Context object. :param depth: An integer specifying the verify depth :return: None zdepth must be an integerN)rErrGrSSL_CTX_set_verify_depthr)rr@rrrset_verify_depth}s zContext.set_verify_depthcCr8)z Retrieve the Context object's verify mode, as set by :meth:`set_verify`. :return: The verify mode )rSSL_CTX_get_verify_moderrrrrget_verify_mode zContext.get_verify_modecCr8)z Retrieve the Context object's verify depth, as set by :meth:`set_verify_depth`. :return: The verify depth )rSSL_CTX_get_verify_depthrrrrrget_verify_depthrFzContext.get_verify_depthdhfilecCstt|}t|d}|tjkrtt|tj}t|tjtjtj}t|tj }t |j |}t |dkdS)z Load parameters for Ephemeral Diffie-Hellman :param dhfile: The file to load EDH parameters from (``bytes`` or ``str``). :return: None rr$N) rr BIO_new_filer=r^rrBIO_freePEM_read_bio_DHparamsDH_freeSSL_CTX_set_tmp_dhrr)rrIbiodhresrrr load_tmp_dhs  zContext.load_tmp_dhcurve!_EllipticCurve | ec.EllipticCurvecCst|trtjdtddt|j|dS|j }|dkr"d}n|dkr(d}t | }|tj kr7t t|}t|tjkt|tj}t|j|dS) a Select a curve to use for ECDHE key exchange. :param curve: A curve instance from cryptography (:class:`~cryptogragraphy.hazmat.primitives.asymmetric.ec.EllipticCurve`). 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X509Name support in pyOpenSSL is deprecated.certificate_authoritiesSequence[X509Name]cCst}t|tjkz4|D]/}t|ts tdt|j dt |j }t|tjkt ||}|s=t |tqWn tyLt|wt|j|dS)a_ Set the list of preferred client certificate signers for this server context. This list of certificate authorities will be sent to the client when the server requests a client certificate. :param certificate_authorities: a sequence of X509Names. :return: None .. versionadded:: 0.10 z)client CAs must be X509Name objects, not z objectsN)rsk_X509_NAME_new_nullrr=r^rErrGrr X509_NAME_dup_namesk_X509_NAME_pushX509_NAME_freerr-sk_X509_NAME_freer,r)rrk name_stackca_namer push_resultrrrset_client_ca_list s.     zContext.set_client_ca_listcertificate_authoritycCsFt|ts t|}ntjdtddt|j|j }t |dkdS)ai Add the CA certificate to the list of preferred signers for this context. The list of certificate authorities will be sent to the client when the server requests a client certificate. :param certificate_authority: certificate authority's X509 certificate. :return: None .. versionadded:: 0.10 r r]r r$N) rErr rrrrSSL_CTX_add_client_CArrr)rrwrrrr add_client_ca3s  zContext.add_client_catimeoutcCr3)aQ Set the timeout for newly created sessions for this Context object to *timeout*. The default value is 300 seconds. See the OpenSSL manual for more information (e.g. :manpage:`SSL_CTX_set_timeout(3)`). :param timeout: The timeout in (whole) seconds :return: The previous session timeout ztimeout must be an integer)rErrGrSSL_CTX_set_timeoutr)rrzrrr set_timeoutVs zContext.set_timeoutcCr8)z Retrieve session timeout, as set by :meth:`set_timeout`. The default is 300 seconds. :return: The session timeout )rSSL_CTX_get_timeoutrrrrr get_timeouterFzContext.get_timeout&Callable[[Connection, int, int], None]c6tfdd}td||_t|j|jdS) Set the information callback to *callback*. 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N)rSSL_CTX_get_cert_storerr=r^r __new___store)rstorepystorerrrget_cert_stores   zContext.get_cert_storeoptionscCr3z Add options. Options set before are not cleared! This method should be used with the :const:`OP_*` constants. :param options: The options to add. :return: The new option bitmask. zoptions must be an integer)rErrGrSSL_CTX_set_optionsrrrrrr set_options zContext.set_optionscCr3)z Add modes via bitmask. Modes set before are not cleared! This method should be used with the :const:`MODE_*` constants. :param mode: The mode to add. :return: The new mode bitmask. r4)rErrGrSSL_CTX_set_moderr6rrrrrzContext.set_mode mode_to_clearcCst|j|S)z Modes previously set cannot be overwritten without being cleared first. This method should be used to clear existing modes. )rSSL_CTX_clear_moder)rrrrr clear_modeszContext.clear_modeCallable[[Connection], None]cr)a Specify a callback function to be called when clients specify a server name. :param callback: The callback function. 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N) r@rr!rrSSL_CTX_set_alpn_select_cbrr=r^rr!rrrset_alpn_select_callback>s   z Context.set_alpn_select_callbackhelper5_OCSPClientCallbackHelper | _OCSPServerCallbackHelper Any | NonecCsh||_|j|_|durtj|_nt||_t|j |j}t |dkt |j |j}t |dkdS)z This internal helper does the common work for ``set_ocsp_server_callback`` and ``set_ocsp_client_callback``, which is almost all of it. Nr$) rr!rr=r^r new_handlerSSL_CTX_set_tlsext_status_cbrrSSL_CTX_set_tlsext_status_arg)rrrcrcrrr_set_ocsp_callbackSs    zContext._set_ocsp_callback_OCSPServerCallback[_T]cCt|}|||dS)a Set a callback to provide OCSP data to be stapled to the TLS handshake on the server side. :param callback: The callback function. It will be invoked with two arguments: the Connection, and the optional arbitrary data you have provided. The callback must return a bytestring that contains the OCSP data to staple to the handshake. 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N)rirrrrrset_ocsp_client_callbacksz Context.set_ocsp_client_callbackrtcC t||_t|j|jjdSr)rsrrSSL_CTX_set_cookie_generate_cbrr!rrrrset_cookie_generate_callback z$Context.set_cookie_generate_callbackrcCrr)rrrSSL_CTX_set_cookie_verify_cbrr!rrrrset_cookie_verify_callbackrz"Context.set_cookie_verify_callback)rrrr)rrrrr)rrrrrr)r!rrr")r!rrrrrr)rrrrrrn)rrrrrr)rrrr)rrrrrrr2rrr)rrrr)rrrrrrr r!rr)rrFrr)r/rFrr)r2rrrrrr2rr!r;rr)r@rrr)rIrrr)rTrUrr)rdrFrr)rgrFrr)rkrlrr)rwrrr)rzrrrr!rrr)r!rrrrr rcr rr)rrrrrr)rrrr)r!rrr)rrFrrrrrrrZ)rrrcrrr)r!rrcrrr)r!rrcrrrr}r)Qrrrrr{r TLS_methodrrir~rfrrgrkrlTLS_server_methodrjTLS_client_methodr% DTLS_methodr&DTLS_server_methodr$DTLS_client_methodrrrrrrrrrrrrrrrrrrrrr'r)r.r1r7r:r?rCrErHrSrcrfrjrvryr|r~r_requires_keylogrrrrrrrrrrrrrr_requires_ssl_cookierrrrrrrrns           1    $ !  *            %    '  % "            %   rrc@sLeZdZUeZded< ddd d ZdddZdddZdddZ dddZ dddZ dddZ ddd#d$Z dd%d&Zdd)d*Zdd-d.Zdd0d1Zdd2d3Zdd5d6Zdd7d8Zddd=d>ZeZddd?d@ZdddCdDZeZ  dddGdHZddKdLZddMdNZddOdPZddRdSZddTdUZddVdWZ ddXdYZ!dd[d\Z"dd]d^Z#dd`daZ$ddbdcZ%ddddeZ&ddfdgZ'ddhdiZ(ddjdkZ)ddmdnZ*e+j,ddrdsZ-e+j,dtduddxdsZ-dtdudd{dsZ-dd~dZ.dddZ/dddZ0dddZ1d ddZ2d ddZ3dddZ4dddZ5dddZ6 dd ddZ7d ddZ8e+j,d ddZ9e+j,dtdudddZ9dtdudddZ9e+j,d ddZ:e+j,dtdudddZ:dtdudddZ:e;dddZe+j,dtdudddZ>dtdudddZ>e+j,dddZ?e+j,dtdudddZ?dtdudddZ?dddZ@dddZAdddZBdddZCdddZDdddÄZEdddDŽZFdddɄZGddd˄ZHddd΄ZIdddЄZJddd҄ZKdddԄZLdddքZMdddڄZNd dd܄ZOd ddބZPeQdddZRdddZSdddZTdS(rqz&typing.MutableMapping[Any, Connection]r,Nrrrsocketsocket.socket | NonerrcCst|ts tdd|_t|j}t|tj |_ t |j tj ||_d|_ d|_|j|_|j|_|j|_|j|_||j|j <|durtd|_tt|_t|jtjktt|_t|jtjkt|j |j|jdSd|_d|_||_t|j t|j}t|dkdS)z Create a new Connection object, using the given OpenSSL.SSL.Context instance and socket. :param context: An SSL Context to use for this connection :param socket: The socket to use for transport layer "context must be a Context instanceTNr$)rErrrGrrSSL_newrr=rSSL_free_ssl SSL_set_modeSSL_MODE_AUTO_RETRYrrJrrrrr,_socketBIO_new BIO_s_mem _into_sslrr^ _from_ssl SSL_set_bio SSL_set_fdr)rrrr6rrrrrs8    zConnection.__init__r\rr cCs0|jdurtd|jjd|dt|j|S)zy Look up attributes on the wrapped socket object if they are not found on the Connection object. N'z' object has no attribute ')rAttributeError __class__rr|rr\rrr __getattr__s  zConnection.__getattr__r6r8rcCsr|jjdur |jj|jjdur|jj|jjdur$|jjt||}|tjkr2t|tj kr:t |tj krBt |tj krJt|tjkrtdkrZtd}ntj}tdksg|dkr||dkrw|dkrwt|t|tddtdS|tjkrtdkrt}t|}tjrt|tjkttddtdS|tjkrdStdS)Nwin32rrlzUnexpected EOF) rrrrrr SSL_get_errorSSL_ERROR_WANT_READrSSL_ERROR_WANT_WRITErSSL_ERROR_ZERO_RETURNrSSL_ERROR_WANT_X509_LOOKUPrSSL_ERROR_SYSCALLr r= getwinerrorerrnoERR_peek_errorr}rrr SSL_ERROR_SSLERR_GET_REASON-Cryptography_HAS_UNEXPECTED_EOF_WHILE_READINGr"SSL_R_UNEXPECTED_EOF_WHILE_READINGERR_clear_errorSSL_ERROR_NONE)rr6r8rr peeked_errorreasonrrr_raise_ssl_errorsJ                   zConnection._raise_ssl_errorcCr)zh Retrieve the :class:`Context` object associated with this :class:`Connection`. )rrrrr get_context6szConnection.get_contextcCs4t|ts tdt|j|j||_d|j_dS)z Switch this connection to a new session context. :param context: A :class:`Context` instance giving the new session context to use. rTN)rErrrGrSSL_set_SSL_CTXrrr)rrrrr set_context=s  zConnection.set_contextrcCr3r)rErrGrSSL_set_optionsrrrrrrKs zConnection.set_options bytes | NonecCs(t|jtj}|tjkrdSt|S)z Retrieve the servername extension value if provided in the client hello message, or None if there wasn't one. :return: A byte string giving the server name or :data:`None`. .. versionadded:: 0.13 N)rSSL_get_servernamerTLSEXT_NAMETYPE_host_namer=r^rrrrrget_servernameXs    zConnection.get_servernamer2r!r;cCr<)z Override the Context object's verification flags for this specific connection. See :py:meth:`Context.set_verify` for details. r4Nr) rErrGrrrSSL_set_verifyrr=r^rr r!r>rrrr?is   zConnection.set_verifycCr8)z Retrieve the Connection object's verify mode, as set by :meth:`set_verify`. :return: The verify mode )rSSL_get_verify_moderrrrrrErFzConnection.get_verify_moder2rcCrr ) rErr rrrrSSL_use_certificaterrrrrrrrs    zConnection.use_certificater r!cCsLt|ts t|}ntjdtddt|j|j }|s$|j dSdSr") rErr#rrrrSSL_use_PrivateKeyrr%rrr&rrrr's   zConnection.use_privatekeymtucCst|j|dS)aK For DTLS, set the maximum UDP payload size (*not* including IP/UDP overhead). Note that you might have to set :data:`OP_NO_QUERY_MTU` to prevent OpenSSL from spontaneously clearing this. :param mtu: An integer giving the maximum transmission unit. .. versionadded:: 21.1 N)r SSL_set_mtur)rrrrrset_ciphertext_mtus zConnection.set_ciphertext_mtucCsttds tdt|jS)a  For DTLS, get the maximum size of unencrypted data you can pass to :meth:`write` without exceeding the MTU (as passed to :meth:`set_ciphertext_mtu`). :return: The effective MTU as an integer. .. versionadded:: 21.1 DTLS_get_data_mtuz requires OpenSSL 1.1.1 or better)hasattrrrr"rrrrrget_cleartext_mtus  zConnection.get_cleartext_mturFcCs4t|ts tdd|vrtdt|j|dS)z Set the value of the servername extension to send in the client hello. :param name: A byte string giving the name. .. versionadded:: 0.13 zname must be a byte stringzname must not contain NUL byteN)rErFrGrSSL_set_tlsext_host_namerrrrrset_tlsext_host_names zConnection.set_tlsext_host_namecCr8)z Get the number of bytes that can be safely read from the SSL buffer (**not** the underlying transport buffer). :return: The number of bytes available in the receive buffer. )r SSL_pendingrrrrrpendingrFzConnection.pendingrr/_BufferflagscCsrtd|}t|%}t|dkrtdt|j|t|}||j||WdS1s2wYdS)a Send data on the connection. NOTE: If you get one of the WantRead, WantWrite or WantX509Lookup exceptions on this, you have to call the method again with the SAME buffer. :param buf: The string, buffer or memoryview to send :param flags: (optional) Included for compatibility with the socket API, the value is ignored :return: The number of bytes written r/z,Cannot send more than 2**31-1 bytes at once.N) r+r= from_bufferrIrxr SSL_writerr)rr/r+rcr8rrrsends  $zConnection.sendcCstd|}t|0}t|}d}|r1t|j||t|d}||j|||7}||8}|s|WdS1s=wYdS)a Send "all" data on the connection. This calls send() repeatedly until all data is sent. If an error occurs, it's impossible to tell how much data has been sent. :param buf: The string, buffer or memoryview to send :param flags: (optional) Included for compatibility with the socket API, the value is ignored :return: The number of bytes written r/rr,N) r+r=r-rIrr.rminr)rr/r+rc left_to_send total_sentr8rrrsendall s  $zConnection.sendallbufsizrcCs`td|}|dur|tj@rt|j||}nt|j||}||j|t ||ddS)a Receive data on the connection. :param bufsiz: The maximum number of bytes to read :param flags: (optional) The only supported flag is ``MSG_PEEK``, all other flags are ignored. :return: The string read from the Connection char[]N) _no_zero_allocatorrMSG_PEEKrSSL_peekrSSL_readrr=rD)rr4r+r/r8rrrrecv' s zConnection.recvrDnbytescCs|dur t|}nt|t|}td|}|dur'|tj@r't|j||}nt|j||}| |j|t t |||d|<|S)ae Receive data on the connection and copy it directly into the provided buffer, rather than creating a new string. :param buffer: The buffer to copy into. :param nbytes: (optional) The maximum number of bytes to read into the buffer. If not present, defaults to the size of the buffer. If larger than the size of the buffer, is reduced to the size of the buffer. :param flags: (optional) The only supported flag is ``MSG_PEEK``, all other flags are ignored. :return: The number of bytes read into the buffer. Nr5) rIr0r6rr7rr8rr9r memoryviewr=rD)rrDr;r+r/r8rrr recv_into: s  zConnection.recv_intorPtyping.NoReturncCsNt|r"t|r tt|rtt|rtdtdtdS)NBIO_should_io_specialzunknown bio failure) rBIO_should_retryBIO_should_readrBIO_should_writerr?rxr)rrPr8rrr_handle_bio_errorsd s     zConnection._handle_bio_errorscCsh|jdur tdt|tstdtd|}t|j||}|dkr*||j|t ||ddS)a If the Connection was created with a memory BIO, this method can be used to read bytes from the write end of that memory BIO. Many Connection methods will add bytes which must be read in this manner or the buffer will eventually fill up and the Connection will be able to take no further actions. :param bufsiz: The maximum number of bytes to read :return: The string read. NConnection sock was not Nonezbufsiz must be an integerr5r) rrGrErr6rBIO_readrCr=rD)rr4r/r8rrrbio_readv s   zConnection.bio_readcCsxtd|}|jdurtdt|}t|j|t|}|dkr)||j||WdS1s5wYdS)aj If the Connection was created with a memory BIO, this method can be used to add bytes to the read end of that memory BIO. The Connection can then read the bytes (for example, in response to a call to :meth:`recv`). :param buf: The string to put into the memory BIO. :return: The number of bytes written r/NrDr) r+rrGr=r-r BIO_writerIrC)rr/rcr8rrr bio_write s  $zConnection.bio_writerncCs$|stt|jdkdSdS)zv Renegotiate the session. :return: True if the renegotiation can be started, False otherwise r$TF)renegotiate_pendingrrSSL_renegotiaterrrrr renegotiate szConnection.renegotiatecCst|j}||j|dS)a Perform an SSL handshake (usually called after :meth:`renegotiate` or one of :meth:`set_accept_state` or :meth:`set_connect_state`). This can raise the same exceptions as :meth:`send` and :meth:`recv`. :return: None. N)rSSL_do_handshakerrrr8rrr do_handshake s zConnection.do_handshakecCst|jdkS)z Check if there's a renegotiation in progress, it will return False once a renegotiation is finished. :return: Whether there's a renegotiation in progress r$)rSSL_renegotiate_pendingrrrrrrI zConnection.renegotiate_pendingcCr8)zn Find out the total number of renegotiations. :return: The number of renegotiations. )rSSL_total_renegotiationsrrrrrtotal_renegotiations s zConnection.total_renegotiationsaddrcCst|j|j|S)a4 Call the :meth:`connect` method of the underlying socket and set up SSL on the socket, using the :class:`Context` object supplied to this :class:`Connection` object at creation. :param addr: A remote address :return: What the socket's connect method returns )rSSL_set_connect_staterrconnect)rrSrrrrU s zConnection.connectcCs|jj}|||S)a Call the :meth:`connect_ex` method of the underlying socket and set up SSL on the socket, using the Context object supplied to this Connection object at creation. 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See the OpenSSL manual for more details. :return: None Nr) r BIO_ADDR_new DTLSv1_listenr BIO_ADDR_freerrrrr)rbio_addrr8rrrr] s    zConnection.DTLSv1_listencCs<td}td}t|j||r|d|ddSdS)a} Determine when the DTLS SSL object next needs to perform internal processing due to the passage of time. When the returned number of seconds have passed, the :meth:`DTLSv1_handle_timeout` method needs to be called. :return: The time left in seconds before the next timeout or `None` if no timeout is currently active. ztime_t *zlong *ri@BN)r=rHrCryptography_DTLSv1_get_timeoutr)rptv_secptv_usecrrrDTLSv1_get_timeout s zConnection.DTLSv1_get_timeoutcCs2t|j}|dkr||j|Jdt|S)z Handles any timeout events which have become pending on a DTLS SSL object. :return: `True` if there was a pending timeout, `False` otherwise. rF unreachable)rDTLSv1_handle_timeoutrrrnrMrrrre s z Connection.DTLSv1_handle_timeoutcCs$|jdur tdt|jddS)z If the Connection was created with a memory BIO, this method can be used to indicate that *end of file* has been reached on the read end of that memory BIO. :return: None NrDr)rrGrBIO_set_mem_eof_returnrrrrr bio_shutdown- s zConnection.bio_shutdowncCs:t|j}|dkr||j|Jd|dkrdSdS)aQ Send the shutdown message to the Connection. :return: True if the shutdown completed successfully (i.e. both sides have sent closure alerts), False otherwise (in which case you call :meth:`recv` or :meth:`send` when the connection becomes readable/writeable). rFrdT)r SSL_shutdownrrrMrrrshutdown: s zConnection.shutdownrcCsHg}tD]}t|j|}|tjkr|S|t|dq|S)z Retrieve the list of ciphers used by the Connection object. :return: A list of native cipher strings. utf-8) rrSSL_get_cipher_listrr=r^r.rdecode)rciphersrr8rrrget_cipher_listL s  zConnection.get_cipher_listas_cryptographytyping.Literal[True]list[x509.Name]cCdSrrrrorrrget_client_ca_listZ zConnection.get_client_ca_listF)rotyping.Literal[False]list[X509Name]cCrrrrrsrrrrt` ru,typing.Literal[True] | typing.Literal[False] list[X509Name] | list[x509.Name]c Cst|j}|tjkr gS|rPg}tt|D]5}t||}td}t ||}t |dkt |d|dd}t |d| tj|q|Sg} tt|D]&}t||}t|} t | tjktt} t| tj| _| | qY| S)a Get CAs whose certificates are suggested for client authentication. :param bool as_cryptography: Controls whether a list of ``cryptography.x509.Name`` or ``OpenSSL.crypto.X509Name`` objects should be returned. :return: If this is a server connection, the list of certificate authorities that will be sent or has been sent to the client, as controlled by this :class:`Connection`'s :class:`Context`. If this is a client connection, the list will be empty until the connection with the server is established. .. versionadded:: 0.10 zunsigned char**rN)rSSL_get_client_CA_listrr=r^rangesk_X509_NAME_numsk_X509_NAME_valuerH i2d_X509_NAMErrD OPENSSL_freer.rName from_bytesrnobjectrrrrqro) rroca_namesnamesrr\ result_buffer encode_resultderr8rpynamerrrrtf s.          rrcOstd)z The makefile() method is not implemented, since there is no dup semantics for SSL connections :raise: NotImplementedError z1Cannot make file object of OpenSSL.SSL.Connectionrrrrrmakefile szConnection.makefilecCr)zr Retrieve application data as set by :meth:`set_app_data`. :return: The application data rrrrrr rzConnection.get_app_datarccCr)zg Set application data :param data: The application data :return: None Nrrrrrr s zConnection.set_app_datacCr8)z Get the shutdown state of the Connection. :return: The shutdown state, a bitvector of SENT_SHUTDOWN, RECEIVED_SHUTDOWN. )rSSL_get_shutdownrrrrr get_shutdown rFzConnection.get_shutdownstatecCrA)z Set the shutdown state of the Connection. :param state: bitvector of SENT_SHUTDOWN, RECEIVED_SHUTDOWN. :return: None zstate must be an integerN)rErrGrSSL_set_shutdownr)rrrrr set_shutdown s zConnection.set_shutdowncCstt|jS)z Retrieve a verbose string detailing the state of the Connection. :return: A string representing the state )r=rrSSL_state_string_longrrrrrget_state_string szConnection.get_state_stringcCft|j}|tjkr dSt|jtjd}t|dktd|}t|j||t||ddS)z Retrieve the random value used with the server hello message. :return: A string representing the state NrrC) rSSL_get_sessionrr=r^SSL_get_server_randomrr6rDrsessionlengthoutprrr server_random s    zConnection.server_randomcCr)z Retrieve the random value used with the client hello message. :return: A string representing the state NrrC) rrrr=r^SSL_get_client_randomrr6rDrrrr client_random s    zConnection.client_randomcCsbt|j}|tjkr dSt|tjd}t|dktd|}t|||t||ddS)zz Retrieve the value of the master key for this session. :return: A string representing the state NrrC) rrrr=r^SSL_SESSION_get_master_keyrr6rDrrrr master_key s    zConnection.master_keylabelolenc Csntd|}tj}d}d}|dur|}t|}d}t|j|||t||||}t|dkt||ddS)aH Obtain keying material for application use. :param: label - a disambiguating label string as described in RFC 5705 :param: olen - the length of the exported key material in bytes :param: context - a per-association context value :return: the exported key material bytes or None rCrNr$) r6r=r^rIrSSL_export_keying_materialrrrD) rrrrr context_buf context_len use_contextsuccessrrrexport_keying_material s(  z!Connection.export_keying_materialcOs|jj|i|S)z Call the :meth:`shutdown` method of the underlying socket. See :manpage:`shutdown(2)`. :return: What the socket's shutdown() method returns )rrirrrr sock_shutdown" szConnection.sock_shutdownx509.Certificate | NonecCrrrrrsrrrget_certificate+ ruzConnection.get_certificate X509 | NonecCrrrrrsrrrr1 ruX509 | x509.Certificate | NonecCs>t|j}|tjkrt|t|}|r|S|SdS)a  Retrieve the local certificate (if any) :param bool as_cryptography: Controls whether a ``cryptography.x509.Certificate`` or an ``OpenSSL.crypto.X509`` object should be returned. :return: The local certificate N) rSSL_get_certificaterr=r^r&rr'to_cryptographyrror2pycertrrrr7 s    cCrrrrrsrrrget_peer_certificateN ruzConnection.get_peer_certificatecCrrrrrsrrrrT rucCs4t|j}|tjkrt|}|r|S|SdS)a Retrieve the other side's certificate (if any) :param bool as_cryptography: Controls whether a ``cryptography.x509.Certificate`` or an ``OpenSSL.crypto.X509`` object should be returned. :return: The peer's certificate N)rSSL_get_peer_certificaterr=r^rr'rrrrrrZ s    cert_stack list[X509]cCs`g}tt|D]$}t||}t|tjkt|}t|dkt |}| |q |Szb Internal helper to convert a STACK_OF(X509) to a list of X509 instances. r$) r{r sk_X509_num sk_X509_valuerr=r^r&rr'r.rr8rr2rRrrrr_cert_stack_to_listp s     zConnection._cert_stack_to_listlist[x509.Certificate]cCsdg}tt|D]&}t||}t|tjkt|}t|dkt |}| | q |Sr) r{rrrrr=r^r&rr'r.rrrrr _cert_stack_to_cryptography_list s    z+Connection._cert_stack_to_cryptography_listlist[x509.Certificate] | NonecCrrrrrsrrrget_peer_cert_chain ruzConnection.get_peer_cert_chainlist[X509] | NonecCrrrrrsrrrr ru*list[X509] | list[x509.Certificate] | NonecC2t|j}|tjkr dS|r||S||S)as Retrieve the other side's certificate (if any) :param bool as_cryptography: Controls whether a list of ``cryptography.x509.Certificate`` or ``OpenSSL.crypto.X509`` object should be returned. :return: A list of X509 instances giving the peer's certificate chain, or None if it does not have one. N)rSSL_get_peer_cert_chainrr=r^rrrrorrrrr s    cCrrrrrsrrrget_verified_chain ruzConnection.get_verified_chaincCrrrrrsrrrr rucCr)a Retrieve the verified certificate chain of the peer including the peer's end entity certificate. It must be called after a session has been successfully established. If peer verification was not successful the chain may be incomplete, invalid, or None. :param bool as_cryptography: Controls whether a list of ``cryptography.x509.Certificate`` or ``OpenSSL.crypto.X509`` object should be returned. :return: A list of X509 instances giving the peer's verified certificate chain, or None if it does not have one. .. versionadded:: 20.0 N)rSSL_get0_verified_chainrr=r^rrrrrrr s    cCr8)z Checks if more data has to be read from the transport layer to complete an operation. :return: True iff more data has to be read )r SSL_want_readrrrrr want_read rFzConnection.want_readcCr8)z Checks if there is data to write to the transport layer to complete an operation. :return: True iff there is data to write )rSSL_want_writerrrrr want_write rFzConnection.want_writecCt|jdS)z Set the connection to work in server mode. The handshake will be handled automatically by read/write. :return: None N)rSSL_set_accept_staterrrrrrZ rPzConnection.set_accept_statecCr)z Set the connection to work in client mode. The handshake will be handled automatically by read/write. :return: None N)rrTrrrrrrW rPzConnection.set_connect_stateSession | NonecCs@t|j}|tjkr dStt}t|tj|_ |j |_ |S)z Returns the Session currently used. :return: An instance of :class:`OpenSSL.SSL.Session` or :obj:`None` if no session exists. .. versionadded:: 0.14 N) rSSL_get1_sessionrr=r^r|rrSSL_SESSION_freerr)rr pysessionrrr get_session s  zConnection.get_sessionrr|cCsFt|ts td|j|jurtdt|j|j}t |dkdS)a  Set the session to be used when the TLS/SSL connection is established. The session must have been obtained, via :meth:`get_session`, from a :class:`Connection` that was using the same :class:`Context` as this one. OpenSSL requires (but does not verify) that sessions only be re-used with a compatible ``SSL_CTX``, so this is enforced here. :param session: A Session instance representing the session to use. :returns: None .. versionadded:: 0.14 z"session must be a Session instancezQsession must have been created by a Connection using the same Context as this oner$N) rEr|rGrrxrSSL_set_sessionrrr)rrr8rrr set_session s  zConnection.set_sessionfunctionCallable[[Any, Any, int], int]cCsRtdd}||j|d}|dkrdStd|}||j||t||ddS)aN Helper to implement :meth:`get_finished` and :meth:`get_peer_finished`. :param function: Either :data:`SSL_get_finished`: or :data:`SSL_get_peer_finished`. :return: :data:`None` if the desired message has not yet been received, otherwise the contents of the message. r5rN)r=rHrr6rD)rremptyrr/rrr_get_finished_message. s  z Connection._get_finished_messagecC |tjS)z Obtain the latest TLS Finished message that we sent. :return: The contents of the message or :obj:`None` if the TLS handshake has not yet completed. .. versionadded:: 0.15 )rrSSL_get_finishedrrrr get_finishedQ  zConnection.get_finishedcCr)z Obtain the latest TLS Finished message that we received from the peer. :return: The contents of the message or :obj:`None` if the TLS handshake has not yet completed. .. versionadded:: 0.15 )rrSSL_get_peer_finishedrrrrget_peer_finished\ rzConnection.get_peer_finished str | NonecC4t|j}|tjkr dStt|}|dS)z Obtain the name of the currently used cipher. :returns: The name of the currently used cipher or :obj:`None` if no connection has been established. .. versionadded:: 0.15 Nrj)rSSL_get_current_cipherrr=r^rSSL_CIPHER_get_namerl)rcipherr\rrrget_cipher_nameg  zConnection.get_cipher_namecCs(t|j}|tjkr dSt|tjS)z Obtain the number of secret bits of the currently used cipher. :returns: The number of secret bits of the currently used cipher or :obj:`None` if no connection has been established. .. versionadded:: 0.15 N)rrrr=r^SSL_CIPHER_get_bits)rrrrrget_cipher_bitsw s zConnection.get_cipher_bitscCr)z Obtain the protocol version of the currently used cipher. :returns: The protocol name of the currently used cipher or :obj:`None` if no connection has been established. .. versionadded:: 0.15 Nrj)rrrr=r^rSSL_CIPHER_get_versionrl)rrrrrrget_cipher_version rzConnection.get_cipher_versioncCstt|j}|dS)a Retrieve the protocol version of the current connection. :returns: The TLS version of the current connection, for example the value for TLS 1.2 would be ``TLSv1.2``or ``Unknown`` for connections that were not successfully established. rj)r=rrSSL_get_versionrrlrrrrget_protocol_version_name s z$Connection.get_protocol_version_namecCst|j}|S)z Retrieve the SSL or TLS protocol version of the current connection. :returns: The TLS version of the current connection. 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