OwlCyberSecurity - MANAGER
Edit File: ssl.cpython-34.pyc
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Gd% d& � d& e@ � ZA d' d( d) � ZB d* d+ � ZC e d, d- � ZD d. d/ � ZE Gd0 d1 � d1 e d1 d2 � � ZF Gd3 d4 � d4 eF e � ZG Gd5 d6 � d6 e � ZH eG jI d7 d d8 d d9 d d: d; �ZJ eK d< d d= d> d? eG jI d@ d dA d d7 d d8 d d9 d dB dC �ZL eJ ZM eL ZN GdD dE � dE e2 � ZO d d d> e eK d dF dF d dG dH � ZP dI dJ � ZQ dK ZR dL ZS dM dN � ZT dO dP � ZU eK d dQ dR � ZV dS dT � ZW d S)Ua� This module provides some more Pythonic support for SSL. Object types: SSLSocket -- subtype of socket.socket which does SSL over the socket Exceptions: SSLError -- exception raised for I/O errors Functions: cert_time_to_seconds -- convert time string used for certificate notBefore and notAfter functions to integer seconds past the Epoch (the time values returned from time.time()) fetch_server_certificate (HOST, PORT) -- fetch the certificate provided by the server running on HOST at port PORT. No validation of the certificate is performed. Integer constants: SSL_ERROR_ZERO_RETURN SSL_ERROR_WANT_READ SSL_ERROR_WANT_WRITE SSL_ERROR_WANT_X509_LOOKUP SSL_ERROR_SYSCALL SSL_ERROR_SSL SSL_ERROR_WANT_CONNECT SSL_ERROR_EOF SSL_ERROR_INVALID_ERROR_CODE The following group define certificate requirements that one side is allowing/requiring from the other side: CERT_NONE - no certificates from the other side are required (or will be looked at if provided) CERT_OPTIONAL - certificates are not required, but if provided will be validated, and if validation fails, the connection will also fail CERT_REQUIRED - certificates are required, and will be validated, and if validation fails, the connection will also fail The following constants identify various SSL protocol variants: PROTOCOL_SSLv2 PROTOCOL_SSLv3 PROTOCOL_SSLv23 PROTOCOL_TLS PROTOCOL_TLSv1 PROTOCOL_TLSv1_1 PROTOCOL_TLSv1_2 The following constants identify various SSL alert message descriptions as per http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-6 ALERT_DESCRIPTION_CLOSE_NOTIFY ALERT_DESCRIPTION_UNEXPECTED_MESSAGE ALERT_DESCRIPTION_BAD_RECORD_MAC ALERT_DESCRIPTION_RECORD_OVERFLOW ALERT_DESCRIPTION_DECOMPRESSION_FAILURE ALERT_DESCRIPTION_HANDSHAKE_FAILURE ALERT_DESCRIPTION_BAD_CERTIFICATE ALERT_DESCRIPTION_UNSUPPORTED_CERTIFICATE ALERT_DESCRIPTION_CERTIFICATE_REVOKED ALERT_DESCRIPTION_CERTIFICATE_EXPIRED ALERT_DESCRIPTION_CERTIFICATE_UNKNOWN ALERT_DESCRIPTION_ILLEGAL_PARAMETER ALERT_DESCRIPTION_UNKNOWN_CA ALERT_DESCRIPTION_ACCESS_DENIED ALERT_DESCRIPTION_DECODE_ERROR ALERT_DESCRIPTION_DECRYPT_ERROR ALERT_DESCRIPTION_PROTOCOL_VERSION ALERT_DESCRIPTION_INSUFFICIENT_SECURITY ALERT_DESCRIPTION_INTERNAL_ERROR ALERT_DESCRIPTION_USER_CANCELLED ALERT_DESCRIPTION_NO_RENEGOTIATION ALERT_DESCRIPTION_UNSUPPORTED_EXTENSION ALERT_DESCRIPTION_CERTIFICATE_UNOBTAINABLE ALERT_DESCRIPTION_UNRECOGNIZED_NAME ALERT_DESCRIPTION_BAD_CERTIFICATE_STATUS_RESPONSE ALERT_DESCRIPTION_BAD_CERTIFICATE_HASH_VALUE ALERT_DESCRIPTION_UNKNOWN_PSK_IDENTITY � N)� namedtuple)�Enum)�OPENSSL_VERSION_NUMBER�OPENSSL_VERSION_INFO�OPENSSL_VERSION)� _SSLContext)�SSLError�SSLZeroReturnError�SSLWantReadError�SSLWantWriteError�SSLSyscallError� SSLEOFError)� CERT_NONE� CERT_OPTIONAL� CERT_REQUIRED)�txt2obj�nid2obj)� RAND_status�RAND_add� RAND_bytes�RAND_pseudo_bytes)�RAND_egdc C sC x< t t � D]. } | j | � r t t | � t � | <q q Wd S)N)�dir�_ssl� startswith�getattr�globals)�prefix�n� r �(/opt/alt/python34/lib64/python3.4/ssl.py�_import_symbolss s r! ZOP_ZALERT_DESCRIPTION_Z SSL_ERROR_� PROTOCOL_ZVERIFY_)�HAS_SNI�HAS_ECDH�HAS_NPN)�_OPENSSL_API_VERSION� PROTOCOL_TLSZPROTOCOL_SSLv23c C s. i | ]$ \ } } | j d � r | | � q S)r" )r )�.0�name�valuer r r � <dictcomp>� s r+ )�PROTOCOL_SSLv2ZSSLv2)�PROTOCOL_TLSv1_1�PROTOCOL_TLSv1_2zTLSv1.1zTLSv1.2�win32)�enum_certificates� enum_crls)�socket�AF_INET� SOCK_STREAM�create_connection)� SOL_SOCKET�SO_TYPEz tls-uniquez�ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:DH+CHACHA20:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:DH+HIGH:RSA+AESGCM:RSA+AES:RSA+HIGH:!aNULL:!eNULL:!MD5:!3DESz�ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:DH+CHACHA20:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:DH+HIGH:RSA+AESGCM:RSA+AES:RSA+HIGH:!aNULL:!eNULL:!MD5:!DSS:!RC4:!3DESc @ s e Z d Z d S)�CertificateErrorN)�__name__� __module__� __qualname__r r r r r8 � s r8 � c C sD g } | s d S| j d � ^ } } | j d � } | | k rY t d t | � � � n | su | j � | j � k S| d k r� | j d � nY | j d � s� | j d � r� | j t j | � � n" | j t j | � j d d � � x$ | D] } | j t j | � � q� Wt j d d j | � d t j � } | j | � S) zhMatching according to RFC 6125, section 6.4.3 http://tools.ietf.org/html/rfc6125#section-6.4.3 F�.�*z,too many wildcards in certificate DNS name: z[^.]+zxn--z\*z[^.]*z\Az\.z\Z)�split�countr8 �repr�lower�appendr �re�escape�replace�compile�join� IGNORECASE�match) Zdn�hostnameZ max_wildcardsZpatsZleftmostZ remainderZ wildcardsZfragZpatr r r �_dnsname_match� s& " &rL c C s[ | s t d � � n g } | j d f � } xC | D]; \ } } | d k r4 t | | � r_ d S| j | � q4 q4 W| s� xc | j d f � D]L } xC | D]; \ } } | d k r� t | | � r� d S| j | � q� q� Wq� Wn t | � d k r t d | d j t t | � � f � � n; t | � d k rKt d | | d f � � n t d � � d S) a) Verify that *cert* (in decoded format as returned by SSLSocket.getpeercert()) matches the *hostname*. RFC 2818 and RFC 6125 rules are followed, but IP addresses are not accepted for *hostname*. CertificateError is raised on failure. On success, the function returns nothing. ztempty or no certificate, match_hostname needs a SSL socket or SSL context with either CERT_OPTIONAL or CERT_REQUIREDZsubjectAltNameZDNSNZsubjectZ commonNamer< z&hostname %r doesn't match either of %sz, z hostname %r doesn't match %rr z=no appropriate commonName or subjectAltName fields were found) � ValueError�getrL rC �lenr8 rH �maprA )�certrK ZdnsnamesZsan�keyr* �subr r r �match_hostname s. %rT �DefaultVerifyPathszQcafile capath openssl_cafile_env openssl_cafile openssl_capath_env openssl_capathc C s� t j � } t j j | d | d � } t j j | d | d � } t t j j | � ra | n d t j j | � r| | n d | � S)z/Return paths to default cafile and capath. r r< � � N) r �get_default_verify_paths�os�environrN rU �path�isfile�isdir)�parts�cafile�capathr r r rX 0 s rX c s^ e Z d Z d Z f Z � f d d � Z e � f d d � � Z e � f d d � � Z � S)� _ASN1Objectz#ASN.1 object identifier lookup c s t � j | t | d d �� S)Nr) F)�super�__new__�_txt2obj)�cls�oid)� __class__r r rc C s z_ASN1Object.__new__c s t � j | t | � � S)z3Create _ASN1Object from OpenSSL numeric ID )rb rc �_nid2obj)re Znid)rg r r �fromnidF s z_ASN1Object.fromnidc s t � j | t | d d �� S)z=Create _ASN1Object from short name, long name or OID r) T)rb rc rd )re r) )rg r r �fromnameL s z_ASN1Object.fromname) r9 r: r; �__doc__� __slots__rc � classmethodri rj r r )rg r ra > s ra znid shortname longname oidc @ s" e Z d Z d Z d Z d Z d S)�PurposezDSSLContext purpose flags with X509v3 Extended Key Usage objects z1.3.6.1.5.5.7.3.1z1.3.6.1.5.5.7.3.2N)r9 r: r; rk � SERVER_AUTH� CLIENT_AUTHr r r r rn S s rn c @ s� e Z d Z d Z d Z d Z e d d � Z e d d � Z d d d d d d � Z d d � Z d d � Z e j d d � Z d S)� SSLContextz|An SSLContext holds various SSL-related configuration options and data, such as certificates and possibly a private key.�protocol� __weakref__�CA�ROOTc O s2 t j | | � } | t k r. | j t � n | S)N)r rc �_SSLv2_IF_EXISTS� set_ciphers�_DEFAULT_CIPHERS)re rr �args�kwargs�selfr r r rc a s zSSLContext.__new__c C s | | _ d S)N)rr )r{ rr r r r �__init__g s zSSLContext.__init__FTNc C s+ t d | d | d | d | d | d | � S)N�sock� server_side�do_handshake_on_connect�suppress_ragged_eofs�server_hostname�_context)� SSLSocket)r{ r} r~ r r� r� r r r � wrap_socketj s zSSLContext.wrap_socketc C s� t � } xp | D]h } t | d � } t | � d k sI t | � d k rX t d � � n | j t | � � | j | � q W| j | � d S)N�asciir � z(NPN protocols must be 1 to 255 in length)� bytearray�bytesrO r rC �extendZ_set_npn_protocols)r{ � npn_protocolsZprotosrr �br r r �set_npn_protocolst s $z SSLContext.set_npn_protocolsc C sw t � } xW t | � D]I \ } } } | d k r | d k sL | j | k r_ | j | � q_ q q W| j d | � | S)NZx509_asnT�cadata)r� r0 rf r� �load_verify_locations)r{ � storename�purposeZcertsrQ �encodingZtrustr r r �_load_windows_store_certs s z$SSLContext._load_windows_store_certsc C sb t | t � s t | � � n t j d k rT x$ | j D] } | j | | � q7 Wn | j � d S)Nr/ )� isinstancera � TypeError�sys�platform�_windows_cert_storesr� Zset_default_verify_paths)r{ r� r� r r r �load_default_certs� s z SSLContext.load_default_certs)zprotocolz __weakref__)rt ru )r9 r: r; rk rl r� r' rc r| r� r� r� rn ro r� r r r r rq Z s rq r_ r` r� c C sB t | t � s t | � � n t t � } | j t O_ | j t O_ | j t t d d � O_ | t j k r� t | _ d | _ np | t j k r� | j t t d d � O_ | j t t d d � O_ | j t t d d � O_ | j t � n | s | s | r | j | | | � n | j t k r>| j | � n | S)z�Create a SSLContext object with default settings. NOTE: The protocol and settings may change anytime without prior deprecation. The values represent a fair balance between maximum compatibility and security. ZOP_NO_COMPRESSIONr TZOP_CIPHER_SERVER_PREFERENCEZOP_SINGLE_DH_USEZOP_SINGLE_ECDH_USE)r� ra r� rq r' �options� OP_NO_SSLv2� OP_NO_SSLv3r r rn ro r � verify_mode�check_hostnamerp rw �_RESTRICTED_SERVER_CIPHERSr� r r� )r� r_ r` r� �contextr r r �create_default_context� s& r� � cert_reqsr� Fr� �certfile�keyfilec C s� t | t � s t | � � n t | � } | j t O_ | j t O_ | d k r` | | _ n | | _ | r� | r� t d � � n | s� | r� | j | | � n | s� | s� | r� | j | | | � n | j t k r� | j | � n | S)a/ Create a SSLContext object for Python stdlib modules All Python stdlib modules shall use this function to create SSLContext objects in order to keep common settings in one place. The configuration is less restrict than create_default_context()'s to increase backward compatibility. Nzcertfile must be specified)r� ra r� rq r� r� r� r� r� rM �load_cert_chainr� r r� ) rr r� r� r� r� r� r_ r` r� r� r r r �_create_unverified_context� s" r� c @ s e Z d Z d Z d d d d e e d d e e d d d d d d d d d � Z e d d � � Z e j d d � � Z d d � Z d d d � Z d d � Z d d d d � Z d d � Z d d d � Z d d � Z d d � Z d d � Z d d d � Z d d d � Z d! d" � Z d d# d$ � Z d% d d& d' � Z d d d( d) � Z d% d d* d+ � Z d d d, d- � Z d. d/ � Z d0 d1 � Z d2 d3 � Z d4 d5 � Z d6 d7 � Z! d8 d9 � Z" d d: d; � Z# d< d= � Z$ d> d? � Z% d@ dA � Z& dB dC � Z' dD dE dF � Z( d S)Gr� z�This class implements a subtype of socket.socket that wraps the underlying OS socket in an SSL context when necessary, and provides read and write methods over that channel.NFTr c C sD | r | | _ n| r. | r. t d � � n | rJ | rJ t d � � n | r` | r` | } n t | � | _ | | j _ | r� | j j | � n | r� | j j | | � n | r� | j j | � n | r� | j j | � n | | _ | | _ | | _ | | _ | | _ | | _ | j t t � t k r?t d � � n | rZ| rZt d � � n | j j r|| r|t d � � n | | _ | | _ | | _ | | _ | d k r t j | d | j d | j d | j d | j � �| j | j � � | j � nA | d k r"t j | d | �n t j | d | d | d | �y | j! � WnC t" k r�} z# | j# t# j$ k r|� n d } WYd d } ~ Xn Xd } d | _% d | _& | | _' | r@yY | j j( | | | � | _& | r| j � } | d k rt d � � n | j) � n Wq@t" t f k r<| j* � � Yq@Xn d S)Nz5certfile must be specified for server-side operationszcertfile must be specifiedz!only stream sockets are supportedz4server_hostname can only be specified in client modez'check_hostname requires server_hostname�family�type�proto�filenoFTg zHdo_handshake_on_connect should not be specified for non-blocking sockets)+r� rM rq r� r� r� r� rw r� r� r� � ssl_version�ca_certs�ciphersZ getsockoptr6 r7 r4 �NotImplementedErrorr� r~ r� r r� r2 r| r� r� r� r� � settimeout� gettimeout�detach� getpeername�OSError�errnoZENOTCONNZ_closed�_sslobj� _connected� _wrap_socket� do_handshake�close)r{ r} r� r� r~ r� r� r� r r� r� r� r� r� r� r� r� r� �eZ connected�timeoutr r r r| � s� zSSLSocket.__init__c C s | j S)N)r� )r{ r r r r� R s zSSLSocket.contextc C s | | _ | | j _ d S)N)r� r� r� )r{ Zctxr r r r� V s c C s t d | j j � � d S)NzCan't dup() %s instances)�NotImplementedrg r9 )r{ r r r �dup[ s z SSLSocket.dupc C s d S)Nr )r{ �msgr r r � _checkClosed_ s zSSLSocket._checkClosedc C s | j s | j � n d S)N)r� r� )r{ r r r �_check_connectedc s zSSLSocket._check_connectedc C s� | j � | j s" t d � � n yD | d k rI | j j | | � } n | j j | p[ d � } | SWn[ t k r� } z; | j d t k r� | j r� | d k r� d Sd Sn � WYd d } ~ Xn Xd S)zORead up to LEN bytes and return them. Return zero-length string on EOF.z'Read on closed or unwrapped SSL socket.Ni r � )r� r� rM �readr ry Z SSL_ERROR_EOFr� )r{ rO �buffer�v�xr r r r� k s zSSLSocket.readc C s2 | j � | j s" t d � � n | j j | � S)zhWrite DATA to the underlying SSL channel. Returns number of bytes of DATA actually transmitted.z(Write on closed or unwrapped SSL socket.)r� r� rM �write)r{ �datar r r r� � s zSSLSocket.writec C s$ | j � | j � | j j | � S)z�Returns a formatted version of the data in the certificate provided by the other end of the SSL channel. Return None if no certificate was provided, {} if a certificate was provided, but not validated.)r� r� r� Zpeer_certificate)r{ Z binary_formr r r � getpeercert� s zSSLSocket.getpeercertc C s3 | j � | j s t j r" d S| j j � Sd S)N)r� r� r r% �selected_npn_protocol)r{ r r r r� � s z SSLSocket.selected_npn_protocolc C s( | j � | j s d S| j j � Sd S)N)r� r� �cipher)r{ r r r r� � s zSSLSocket.cipherc C s( | j � | j s d S| j j � Sd S)N)r� r� � compression)r{ r r r r� � s zSSLSocket.compressionc C s� | j � | j r� | d k r5 t d | j � � n y | j j | � } WnV t k r� } z6 | j d t k rw d S| j d t k r� d S� WYd d } ~ Xq� X| Sn t j | | | � Sd S)Nr z3non-zero flags not allowed in calls to send() on %s) r� r� rM rg r� r ry ZSSL_ERROR_WANT_READZSSL_ERROR_WANT_WRITEr2 �send)r{ r� �flagsr� r� r r r r� � s zSSLSocket.sendc C sb | j � | j r) t d | j � � n5 | d k rH t j | | | � St j | | | | � Sd S)Nz%sendto not allowed on instances of %s)r� r� rM rg r2 �sendto)r{ r� Z flags_or_addr�addrr r r r� � s zSSLSocket.sendtoc O s t d | j � � d S)Nz&sendmsg not allowed on instances of %s)r� rg )r{ ry rz r r r �sendmsg� s zSSLSocket.sendmsgc C s� | j � | j r� | d k r5 t d | j � � n t | � } d } x3 | | k r| | j | | d � � } | | 7} qJ W| St j | | | � Sd S)Nr z6non-zero flags not allowed in calls to sendall() on %s)r� r� rM rg rO r� r2 �sendall)r{ r� r� Zamountr@ r� r r r r� � s zSSLSocket.sendalli c C sY | j � | j rB | d k r5 t d | j � � n | j | � St j | | | � Sd S)Nr z3non-zero flags not allowed in calls to recv() on %s)r� r� rM rg r� r2 �recv)r{ �buflenr� r r r r� � s zSSLSocket.recvc C s� | j � | r+ | d k r+ t | � } n | d k r@ d } n | j r{ | d k rk t d | j � � n | j | | � St j | | | | � Sd S)Ni r z8non-zero flags not allowed in calls to recv_into() on %s)r� rO r� rM rg r� r2 � recv_into)r{ r� �nbytesr� r r r r� � s zSSLSocket.recv_intoc C s@ | j � | j r) t d | j � � n t j | | | � Sd S)Nz'recvfrom not allowed on instances of %s)r� r� rM rg r2 �recvfrom)r{ r� r� r r r r� � s zSSLSocket.recvfromc C sC | j � | j r) t d | j � � n t j | | | | � Sd S)Nz,recvfrom_into not allowed on instances of %s)r� r� rM rg r2 � recvfrom_into)r{ r� r� r� r r r r� s zSSLSocket.recvfrom_intoc O s t d | j � � d S)Nz&recvmsg not allowed on instances of %s)r� rg )r{ ry rz r r r �recvmsg s zSSLSocket.recvmsgc O s t d | j � � d S)Nz+recvmsg_into not allowed on instances of %s)r� rg )r{ ry rz r r r � recvmsg_into s zSSLSocket.recvmsg_intoc C s( | j � | j r | j j � Sd Sd S)Nr )r� r� �pending)r{ r r r r� s zSSLSocket.pendingc C s' | j � d | _ t j | | � d S)N)r� r� r2 �shutdown)r{ Zhowr r r r� s zSSLSocket.shutdownc C s? | j r% | j j � } d | _ | St d t | � � � d S)NzNo SSL wrapper around )r� r� rM �str)r{ �sr r r �unwrap s zSSLSocket.unwrapc C s d | _ t j | � d S)N)r� r2 � _real_close)r{ r r r r� $ s zSSLSocket._real_closec C s� | j � | j � } z3 | d k r; | r; | j d � n | j j � Wd | j | � X| j j r� | j s~ t d � � n t | j � | j � n d S)z Perform a TLS/SSL handshake.g Nz-check_hostname needs server_hostname argument) r� r� r� r� r� r� r� r� rM rT r� )r{ �blockr� r r r r� ( s zSSLSocket.do_handshakec C s� | j r t d � � n | j r0 t d � � n | j j | d | j � | _ ya | rl t j | | � } n d } t j | | � | s� d | _ | j r� | j � q� n | SWn$ t t f k r� d | _ � Yn Xd S)Nz!can't connect in server-side modez/attempt to connect already-connected SSLSocket!FT) r~ rM r� r� r� r� r� r2 � connect_ex�connectr r� r� )r{ r� r� �rcr r r � _real_connect9 s$ zSSLSocket._real_connectc C s | j | d � d S)zQConnects to remote ADDR, and then wraps the connection in an SSL channel.FN)r� )r{ r� r r r r� P s zSSLSocket.connectc C s | j | d � S)zQConnects to remote ADDR, and then wraps the connection in an SSL channel.T)r� )r{ r� r r r r� U s zSSLSocket.connect_exc C sI t j | � \ } } | j j | d | j d | j d d �} | | f S)z�Accepts a new connection from a remote client, and returns a tuple containing that new connection wrapped with a server-side SSL channel, and the address of the remote client.r r� r~ T)r2 �acceptr� r� r r� )r{ Znewsockr� r r r r� Z s zSSLSocket.acceptz tls-uniquec C s_ | t k r t d � � n | d k r? t d j | � � � n | j d k rR d S| j j � S)z�Get channel binding data for current connection. Raise ValueError if the requested `cb_type` is not supported. Return bytes of the data or None if the data is not available (e.g. before the handshake). z Unsupported channel binding typez tls-uniquez({0} channel binding type not implementedN)�CHANNEL_BINDING_TYPESrM r� �formatr� Z tls_unique_cb)r{ Zcb_typer r r �get_channel_bindingf s z SSLSocket.get_channel_binding))r9 r: r; rk r r' r3 r4 r| �propertyr� �setterr� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r r r r� � sP S r� Tc C sC t d | d | d | d | d | d | d | d | d | d | � S) Nr} r� r� r~ r� r� r� r r� r� )r� ) r} r� r� r~ r� r� r� r r� r� r r r r� v s r� c C s% d d l } | j | j | d � � S)z�Takes a date-time string in standard ASN1_print form ("MON DAY 24HOUR:MINUTE:SEC YEAR TIMEZONE") and return a Python time value in seconds past the epoch.r Nz%b %d %H:%M:%S %Y GMT)�timeZmktimeZstrptime)Z cert_timer� r r r �cert_time_to_seconds� s r� z-----BEGIN CERTIFICATE-----z-----END CERTIFICATE-----c C s? t t j | � d d � } t d t j | d � d t d S)z[Takes a certificate in binary DER format and returns the PEM version of it as a string.�ASCII�strict� �@ )r� �base64Zstandard_b64encode� PEM_HEADER�textwrapZfill� PEM_FOOTER)Zder_cert_bytes�fr r r �DER_cert_to_PEM_cert� s r� c C s� | j t � s" t d t � � n | j � j t � sJ t d t � � n | j � t t � t t � � } t j | j d d � � S)zhTakes a certificate in ASCII PEM format and returns the DER-encoded version of it as a byte sequencez(Invalid PEM encoding; must start with %sz&Invalid PEM encoding; must end with %sr� r� ) r r� rM �strip�endswithr� rO r� Z decodebytes�encode)Zpem_cert_string�dr r r �PEM_cert_to_DER_cert� s #r� c C s� | \ } } | d k r! t } n t } t | d | d | �} t | � �. } | j | � � } | j d � } Wd QXWd QXt | � S)z�Retrieve the certificate from the server at the specified address, and return it as a PEM-encoded string. If 'ca_certs' is specified, validate the server cert against it. If 'ssl_version' is specified, use it in the connection attempt.Nr� r_ T)r r �_create_stdlib_contextr5 r� r� r� ) r� r� r� �hostZportr� r� r} ZsslsockZdercertr r r �get_server_certificate� s r� c C s t j | d � S)Nz <unknown>)�_PROTOCOL_NAMESrN )Z protocol_coder r r �get_protocol_name� s r� )Xrk r� rD r� rY � collectionsr Zenumr Z_Enumr r r r r r r r r r r r r r r rd r rh r r r r r � ImportErrorr! r# r$ r% r& r r �itemsr� r, rv r- r. r� r0 r1 r2 r3 r4 r5 r6 r7 r� r� r� Z socket_errorZHAS_TLS_UNIQUEr� rx r� rM r8 rL rT rU rX ra rn rq ro r� r' r� Z _create_default_https_contextr� r� r� r� r� r� r� r� r� r� r r r r �<module>Y s� . " " 1 + 8/ '� �