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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())
get_server_certificate (addr, ssl_version, ca_certs, timeout) -- Retrieve the
certificate from the server at the specified
address and return it as a PEM-encoded string
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
N)
namedtuple)EnumIntEnumIntFlag) _simple_enum)OPENSSL_VERSION_NUMBEROPENSSL_VERSION_INFOOPENSSL_VERSION) _SSLContext MemoryBIO
SSLSession)SSLErrorSSLZeroReturnErrorSSLWantReadErrorSSLWantWriteErrorSSLSyscallError SSLEOFErrorSSLCertVerificationError)txt2objnid2obj) RAND_statusRAND_add
RAND_bytesRAND_pseudo_bytes)RAND_egd)
HAS_SNIHAS_ECDHHAS_NPNHAS_ALPN HAS_SSLv2 HAS_SSLv3 HAS_TLSv1 HAS_TLSv1_1 HAS_TLSv1_2 HAS_TLSv1_3)_DEFAULT_CIPHERS_OPENSSL_API_VERSION
_SSLMethodc 8 | d o| dk S )N PROTOCOL_PROTOCOL_SSLv23
startswithnames 0/opt/alt/python-internal/lib64/python3.11/ssl.pyr1 } s --K$:K2K )sourceOptionsc , | d S )NOP_r, r. s r0 r1 r1 s '' r2 AlertDescriptionc , | d S )NALERT_DESCRIPTION_r, r. s r0 r1 r1 s !566 r2 SSLErrorNumberc , | d S )N
SSL_ERROR_r, r. s r0 r1 r1 s .. r2 VerifyFlagsc , | d S )NVERIFY_r, r. s r0 r1 r1 s ++ r2
VerifyModec , | d S )NCERT_r, r. s r0 r1 r1 s )) r2 c i | ]\ }}|| S rD ).0r/ values r0
rG s QQQ;45$QQQr2 PROTOCOL_SSLv2c p e Zd Zej Zej Zej Z ej
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TLSVersionN)__name__
__module__ __qualname___sslPROTO_MINIMUM_SUPPORTEDMINIMUM_SUPPORTED PROTO_SSLv3SSLv3 PROTO_TLSv1TLSv1
PROTO_TLSv1_1TLSv1_1
PROTO_TLSv1_2TLSv1_2
PROTO_TLSv1_3TLSv1_3PROTO_MAXIMUM_SUPPORTEDMAXIMUM_SUPPORTEDrD r2 r0 rJ rJ sJ 4 E E G G G 4r2 rJ c * e Zd ZdZdZdZdZdZdZdZ dS ) _TLSContentTypez@Content types (record layer)
See RFC 8446, section B.1
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rK rL rM __doc__CHANGE_CIPHER_SPECALERT HANDSHAKEAPPLICATION_DATAHEADERINNER_CONTENT_TYPErD r2 r0 r^ r^ s= EI
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_TLSAlertTypezQAlert types for TLSContentType.ALERT messages
See RFC 8466, section B.2
r
r_ r` ra ( ) * + , - . / 0 1 2 3 < F G P V Z d m n o p q r s t x N)&rK rL rM re CLOSE_NOTIFYUNEXPECTED_MESSAGEBAD_RECORD_MACDECRYPTION_FAILEDRECORD_OVERFLOWDECOMPRESSION_FAILUREHANDSHAKE_FAILURENO_CERTIFICATEBAD_CERTIFICATEUNSUPPORTED_CERTIFICATECERTIFICATE_REVOKEDCERTIFICATE_EXPIREDCERTIFICATE_UNKNOWNILLEGAL_PARAMETER
UNKNOWN_CA
ACCESS_DENIED DECODE_ERROR
DECRYPT_ERROREXPORT_RESTRICTIONPROTOCOL_VERSIONINSUFFICIENT_SECURITYINTERNAL_ERRORINAPPROPRIATE_FALLBACK
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HELLO_REQUEST CLIENT_HELLO SERVER_HELLOHELLO_VERIFY_REQUESTNEWSESSION_TICKETEND_OF_EARLY_DATAHELLO_RETRY_REQUESTENCRYPTED_EXTENSIONS CERTIFICATESERVER_KEY_EXCHANGECERTIFICATE_REQUEST SERVER_DONECERTIFICATE_VERIFYCLIENT_KEY_EXCHANGEFINISHEDCERTIFICATE_URLCERTIFICATE_STATUSSUPPLEMENTAL_DATA
KEY_UPDATE
NEXT_PROTO MESSAGE_HASHrf rD r2 r0 r r s MLL K K HOJJL r2 r win32)enum_certificates enum_crls)socket SOCK_STREAMcreate_connection)
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- Hostnames are compared lower-case.
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wildcard or wildcards in labels other then the left-most label are not
supported and a CertificateError is raised.
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F*r z1too many wildcards in certificate DNS name: {!r}..z9wildcard can only be present in the leftmost label: {!r}.z>sole wildcard without additional labels are not support: {!r}.z
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)r) r* _nid2obj)r, nidr. s r0 fromnidz_ASN1Object.fromnid s) uwws3Xc]]3333r2 c V t j | gt |d R S )z=Create _ASN1Object from short name, long name or OID
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z1.3.6.1.5.5.7.3.1z1.3.6.1.5.5.7.3.2N)rK rL rM re SERVER_AUTH CLIENT_AUTHrD r2 r0 r: r: s" %K%KKKr2 r: c e Zd ZdZdZdZdZd!dZd Z d"dZ d#d Z
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r2 c h | j |||| | || S )N)rQ rT rV rU )sslobject_classrX rN )rF incomingoutgoingrQ rT rV s r0 wrap_biozSSLContext.wrap_bio sA #++ hK 1 1/ B BT ,
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j*%%-55dEBBBBBr2 r c J | j t j z }|t j k S rm _host_flagsrN r )rF ncss r0 hostname_checks_common_namez&SSLContext.hostname_checks_common_names s "T%FFC$;; ;r2 c x |r | xj t j z c_ d S | xj t j z c_ d S rm r )rF rF s r0 r z&SSLContext.hostname_checks_common_namex sH
F T%F$FF D$EE r2 c dS )NTrD rF s r0 r z&SSLContext.hostname_checks_common_name s 4r2 c @ t j }||j S dS )a9 TLS message callback
The message callback provides a debugging hook to analyze TLS
connections. The callback is called for any TLS protocol message
(header, handshake, alert, and more), but not for application data.
Due to technical limitations, the callback can't be used to filter
traffic or to abort a connection. Any exception raised in the
callback is delayed until the handshake, read, or write operation
has been performed.
def msg_cb(conn, direction, version, content_type, msg_type, data):
pass
conn
:class:`SSLSocket` or :class:`SSLObject` instance
direction
``read`` or ``write``
version
:class:`TLSVersion` enum member or int for unknown version. For a
frame header, it's the header version.
content_type
:class:`_TLSContentType` enum member or int for unsupported
content type.
msg_type
Either a :class:`_TLSContentType` enum number for a header
message, a :class:`_TLSAlertType` enum member for an alert
message, a :class:`_TLSMessageType` enum member for other
messages, or int for unsupported message types.
data
Raw, decrypted message content as bytes
N)r)
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||| n%|j t k r| | t! |d r9t" j d }|rt( j j s||_ |S )zCreate a SSLContext object with default settings.
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compatibility and security.
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| _ | S )a/ Create a SSLContext object for Python stdlib modules
All Python stdlib modules shall use this function to create SSLContext
objects in order to keep common settings in one place. The configuration
is less restrict than create_default_context()'s to increase backward
compatibility.
NTcertfile must be specifiedr r )rJ r& ru r: r; r r< r r r> r r load_cert_chainr r r r r r r r r r r ) rC r r r r r r# r$ r} rU r s r0 _create_unverified_contextr s| g{ + + !
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d dZd Zd dZd Zd Zd Zd Zd Zd Zd Zd Zd dZd Zd ZdS )! SSLObjecta This class implements an interface on top of a low-level SSL object as
implemented by OpenSSL. This object captures the state of an SSL connection
but does not provide any network IO itself. IO needs to be performed
through separate "BIO" objects which are OpenSSL's IO abstraction layer.
This class does not have a public constructor. Instances are returned by
``SSLContext.wrap_bio``. This class is typically used by framework authors
that want to implement asynchronous IO for SSL through memory buffers.
When compared to ``SSLSocket``, this object lacks the following features:
* Any form of network IO, including methods such as ``recv`` and ``send``.
* The ``do_handshake_on_connect`` and ``suppress_ragged_eofs`` machinery.
c : t | j j d )NzU does not have a public constructor. Instances are returned by SSLContext.wrap_bio().ru r. rK rF rD rE s r0 __init__zSSLObject.__init__\ s. ~&
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r2 c | j j S )z(The SSLContext that is currently in use.r rU r s r0 rU zSSLObject.contextn |##r2 c || j _ d S rm r rF ctxs r0 rU zSSLObject.contexts s " r2 c | j j S )z!The SSLSession for client socket.r rV r s r0 rV zSSLObject.sessionw r r2 c || j _ d S rm r rF rV s r0 rV zSSLObject.session| s & r2 c | j j S )z.Was the client session reused during handshaker session_reusedr s r0 r zSSLObject.session_reused s |**r2 c | j j S )z%Whether this is a server-side socket.)r rQ r s r0 rQ zSSLObject.server_side s |''r2 c | j j S )z^The currently set server hostname (for SNI), or ``None`` if no
server hostname is set.)r rT r s r0 rT zSSLObject.server_hostname s |++r2 c v | | j || }n| j | }|S )zRead up to 'len' bytes from the SSL object and return them.
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bytes read.
)r read)rF r buffervs r0 r zSSLObject.read s= !!#v..AA !!#&&Ar2 c 6 | j | S )zWrite 'data' to the SSL object and return the number of bytes
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)r writerF r s r0 r zSSLObject.write s |!!$'''r2 c 6 | j | S )zReturns a formatted version of the data in the certificate provided
by the other end of the SSL channel.
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provided, but not validated.
)r getpeercertrF binary_forms r0 r zSSLObject.getpeercert s |'' 444r2 c > t j dt d dS )zReturn the currently selected NPN protocol as a string, or ``None``
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of the peers.r` r ra N)r r r
r s r0 selected_npn_protocolz SSLObject.selected_npn_protocol s0
5
r2 c 4 | j S )zReturn the currently selected ALPN protocol as a string, or ``None``
if a next protocol was not negotiated or if ALPN is not supported by one
of the peers.)r selected_alpn_protocolr s r0 r z SSLObject.selected_alpn_protocol s |22444r2 c 4 | j S )z_Return the currently selected cipher as a 3-tuple ``(name,
ssl_version, secret_bits)``.)r cipherr s r0 r zSSLObject.cipher s |""$$$r2 c 4 | j S )zReturn a list of ciphers shared by the client during the handshake or
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)r shared_ciphersr s r0 r zSSLObject.shared_ciphers s |**,,,r2 c 4 | j S )zReturn the current compression algorithm in use, or ``None`` if
compression was not negotiated or not supported by one of the peers.)r compressionr s r0 r zSSLObject.compression s |'')))r2 c 4 | j S )z8Return the number of bytes that can be read immediately.)r pendingr s r0 r zSSLObject.pending s |##%%%r2 c 8 | j dS )z Start the SSL/TLS handshake.N)r do_handshaker s r0 r zSSLObject.do_handshake s !!#####r2 c 4 | j S )z!Start the SSL shutdown handshake.)r shutdownr s r0 unwrapzSSLObject.unwrap s |$$&&&r2 r c 6 | j | S )zGet channel binding data for current connection. Raise ValueError
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