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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
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is less restrict than create_default_context()'s to increase backward
compatibility.
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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 | | _ | | _ | | _
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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.
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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
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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 �
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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
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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
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