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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_TLS_CLIENT
PROTOCOL_TLS_SERVER
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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|||� n|jt kr`|� | � |S )z�Create a SSLContext object with default settings.
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|� | S )a/ Create a SSLContext object for Python stdlib modules
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that want to implement asynchronous IO for SSL through memory buffers.
When compared to ``SSLSocket``, this object lacks the following features:
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| j �� S )z_Return the currently selected cipher as a 3-tuple ``(name,
ssl_version, secret_bits)``.)r� �cipher)r� r* r* r+ r� � s zSSLObject.cipherc C s
| j �� S )z�Return a list of ciphers shared by the client during the handshake or
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| j �� S )z8Return the number of bytes that can be read immediately.)r� �pending)r� r* r* r+ r� s zSSLObject.pendingc C s | j �� dS )z Start the SSL/TLS handshake.N)r� � do_handshake)r� r* r* r+ r� s zSSLObject.do_handshakec C s
| j �� S )z!Start the SSL shutdown handshake.)r� �shutdown)r� r* r* r+ �unwrap s zSSLObject.unwrap�
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zSSLSocket.writec C s | � � | �� | j�|�S )N)r� r� r� r� )r� r� r* r* r+ r� � s zSSLSocket.getpeercertc C s* | � � | jd kstjs d S | j�� S d S )N)r� r� r9 r r� )r� r* r* r+ r� � s z SSLSocket.selected_npn_protocolc C s* | � � | jd kstjs d S | j�� S d S )N)r� r� r9 r r� )r� r* r* r+ r� � s z SSLSocket.selected_alpn_protocolc C s$ | � � | jd krd S | j�� S d S )N)r� r� r� )r� r* r* r+ r� � s
zSSLSocket.cipherc C s$ | � � | jd krd S | j�� S d S )N)r� r� r� )r� r* r* r+ r� � s
zSSLSocket.shared_ciphersc C s$ | � � | jd krd S | j�� S d S )N)r� r� r� )r� r* r* r+ r� � s
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s� | � � | jd k r�|dkr(td| j ��d}t|��L}|�d��6}t|�}x&||k rp| �||d � �}||7 }qLW W d Q R X W d Q R X nt� � ||�S d S )Nr z6non-zero flags not allowed in calls to sendall() on %s�B)
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zSSLSocket.sendfilec sD | � � | jd k r2|dkr(td| j ��| �|�S t� �||�S d S )Nr z3non-zero flags not allowed in calls to recv() on %s)r� r� rR ru r� rp �recv)r� �buflenr )ru r* r+ r s
zSSLSocket.recvc sj | � � |r |d kr t|�}n |d kr*d}| jd k rV|dkrJtd| j ��| �||�S t� �|||�S d S )Ni r z8non-zero flags not allowed in calls to recv_into() on %s)r� r[ r� rR ru r� rp � recv_into)r� r� �nbytesr )ru r* r+ r
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zSSLSocket.recv_intoc s4 | � � | jd k r"td| j ��nt� �||�S d S )Nz'recvfrom not allowed on instances of %s)r� r� rR ru rp �recvfrom)r� r r )ru r* r+ r 3 s
zSSLSocket.recvfromc s6 | � � | jd k r"td| j ��nt� �|||�S d S )Nz,recvfrom_into not allowed on instances of %s)r� r� rR ru rp �
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zSSLSocket.recvfrom_intoc O s t d| j ��d S )Nz&recvmsg not allowed on instances of %s)r� ru )r� r� r� r* r* r+ �recvmsgC s zSSLSocket.recvmsgc O s t d| j ��d S )Nz+recvmsg_into not allowed on instances of %s)r� ru )r� r� r� r* r* r+ � recvmsg_intoG s zSSLSocket.recvmsg_intoc C s$ | � � | jd k r | j�� S dS d S )Nr )r� r� r� )r� r* r* r+ r� K s
zSSLSocket.pendingc s | � � d | _t� �|� d S )N)r� r� rp r� )r� Zhow)ru r* r+ r� S s zSSLSocket.shutdownc C s. | j r| j �� }d | _ |S tdt| � ��d S )NzNo SSL wrapper around )r� r� rR r� )r� �sr* r* r+ r� X s
zSSLSocket.unwrapc C s$ | j r| j �� S tdt| � ��d S )NzNo SSL wrapper around )r� r� rR r� )r� r* r* r+ r� a s
z&SSLSocket.verify_client_post_handshakec s d | _ t� �� d S )N)r� rp � _real_close)r� )ru r* r+ r h s zSSLSocket._real_closec C sF | � � | �� }z$|dkr(|r(| �d � | j�� W d | �|� X d S )Ng )r� r� r� r� r� )r� �blockr� r* r* r+ r� l s
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r� d | _� Y nX d S )Nz!can't connect in server-side modez/attempt to connect already-connected SSLSocket!F)r� r� T)r� rR r� r� r� r� r� r� rp �
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an SSL channel.FN)r )r� rT r* r* r+ r � s zSSLSocket.connectc C s | � |d�S )zQConnects to remote ADDR, and then wraps the connection in
an SSL channel.T)r )r� rT r* r* r+ r � s zSSLSocket.connect_exc s. t � �� \}}| jj|| j| jdd�}||fS )z�Accepts a new connection from a remote client, and returns
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