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contego / home / tvault / .virtenv / lib / python2.7 / site-packages / paramiko / ssh_gss.pyc
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This module provides GSS-API / SSPI  authentication as defined in :rfc:`4462`.

.. note:: Credential delegation is not supported in server mode.

.. seealso:: :doc:`/api/kex_gss`

.. versionadded:: 1.15
iÿÿÿÿN(tObjectIdentifier(tencodertdecoder(tMSG_USERAUTH_REQUEST(tSSHExceptiontMITtSSPIcCsQtdkrt||ƒStdkrAtjdkrAt||ƒStdƒ‚dS(s©
    Provide SSH2 GSS-API / SSPI authentication.

    :param str auth_method: The name of the SSH authentication mechanism
                            (gssapi-with-mic or gss-keyex)
    :param bool gss_deleg_creds: Delegate client credentials or not.
                                 We delegate credentials by default.
    :return: Either an `._SSH_GSSAPI` (Unix) object or an
             `_SSH_SSPI` (Windows) object

    :raises: ``ImportError`` -- If no GSS-API / SSPI module could be imported.

    :see: `RFC 4462 <http://www.ietf.org/rfc/rfc4462.txt>`_
    :note: Check for the available API and return either an `._SSH_GSSAPI`
           (MIT GSSAPI) object or an `._SSH_SSPI` (MS SSPI) object. If you
           get python-gssapi working on Windows, python-gssapi
           will be used and a `._SSH_GSSAPI` object will be returned.
           If there is no supported API available,
           ``None`` will be returned.
    RRtnts)Unable to import a GSS-API / SSPI module!N(t_APIt_SSH_GSSAPItostnamet	_SSH_SSPItImportError(tauth_methodtgss_deleg_creds((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytGSSAuthAs


t_SSH_GSSAuthcBsPeZdZd„Zd„Zd„Zdd„Zd„Zd„Zd„Z	RS(	s[
    Contains the shared variables and methods of `._SSH_GSSAPI` and
    `._SSH_SSPI`.
    cCsp||_||_d|_d|_d|_d|_d|_d|_t	|_
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        :param str auth_method: The name of the SSH authentication mechanism
                                (gssapi-with-mic or gss-keyex)
        :param bool gss_deleg_creds: Delegate client credentials or not
        sssh-connections1.2.840.113554.1.2.2N(t_auth_methodt_gss_deleg_credstNonet	_gss_hostt	_usernamet_session_idt_servicet
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_gss_srv_ctxtt_gss_srv_ctxt_statustcc_file(tselfRR((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyt__init__cs											cCs|jdƒr||_ndS(sì
        This is just a setter to use a non default service.
        I added this method, because RFC 4462 doesn't specify "ssh-connection"
        as the only service value.

        :param str service: The desired SSH service
        sssh-N(tfindR(R tservice((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytset_service~scCs
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        Setter for C{username}. If GSS-API Key Exchange is performed, the
        username is not set by C{ssh_init_sec_context}.

        :param str username: The name of the user who attempts to login
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        This method returns a single OID, because we only support the
        Kerberos V5 mechanism.

        :param str mode: Client for client mode and server for server mode
        :return: A byte sequence containing the number of supported
                 OIDs, the length of the OID and the actual OID encoded with
                 DER
        :note: In server mode we just return the OID length and the DER encoded
               OID.
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        Check if the given OID is the Kerberos V5 OID (server mode).

        :param str desired_mech: The desired GSS-API mechanism of the client
        :return: ``True`` if the given OID is supported, otherwise C{False}
        (Rtdecodet__str__RRtTrue(R tdesired_mechtmecht__((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytssh_check_mech¥scCstjd|ƒS(sÇ
        Create a 32 bit unsigned integer (The byte sequence of an integer).

        :param int integer: The integer value to convert
        :return: The byte sequence of an 32 bit integer
        s!I(tstructtpack(R tinteger((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR)³scCs´|jt|ƒƒ}||7}|tjdtƒ7}||jt|ƒƒ7}||jƒ7}||jt|ƒƒ7}||jƒ7}||jt|ƒƒ7}||jƒ7}|S(sÎ
        Create the SSH2 MIC filed for gssapi-with-mic.

        :param str session_id: The SSH session ID
        :param str username: The name of the user who attempts to login
        :param str service: The requested SSH service
        :param str auth_method: The requested SSH authentication mechanism
        :return: The MIC as defined in RFC 4462. The contents of the
                 MIC field are:
                 string    session_identifier,
                 byte      SSH_MSG_USERAUTH_REQUEST,
                 string    user-name,
                 string    service (ssh-connection),
                 string    authentication-method
                           (gssapi-with-mic or gssapi-keyex)
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session_idR%R#Rtmic((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyt_ssh_build_mic¼s
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__module__t__doc__R!R$R&R0R7R)R>(((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR^s							R	cBseeZdZd„Zdddd„Zed„Zdd„Zdd„Z	e
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    Implementation of the GSS-API MIT Kerberos Authentication for SSH2.

    :see: `.GSSAuth`
    cCs_tj|||ƒ|jr@tjtjtjtjf|_ntjtjtjf|_dS(sÝ
        :param str auth_method: The name of the SSH authentication mechanism
                                (gssapi-with-mic or gss-keyex)
        :param bool gss_deleg_creds: Delegate client credentials or not
        N(	RR!RtgssapitC_PROT_READY_FLAGtC_INTEG_FLAGt
C_MUTUAL_FLAGtC_DELEG_FLAGt
_gss_flags(R RR((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR!ßs	cCsq||_||_tjd|jtjƒ}tjƒ}|j|_|dkrjtj	j
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        Initialize a GSS-API context.

        :param str username: The name of the user who attempts to login
        :param str target: The hostname of the target to connect to
        :param str desired_mech: The negotiated GSS-API mechanism
                                 ("pseudo negotiated" mechanism, because we
                                 support just the krb5 mechanism :-))
        :param str recv_token: The GSS-API token received from the Server
        :raises:
            `.SSHException` -- Is raised if the desired mechanism of the client
            is not supported
        :return: A ``String`` if the GSS-API has returned a token or
            ``None`` if no token was returned
        shost@sUnsupported mechanism OID.t	peer_namet	mech_typet	req_flagss{0} Target: {1}iN(RRRBtNametC_NT_HOSTBASED_SERVICEtContextRGtflagsRtOIDtmech_from_stringRRR1R2RtInitContextRtsteptGSSExceptiontformattsystexc_infotestablishedR(R ttargetR4R%t
recv_tokent	targ_nametctxt	krb5_mechR5R6ttokentmessage((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytssh_init_sec_contextñs4		cCsa||_|sH|j|j|j|j|jƒ}|jj|ƒ}n|jj|jƒ}|S(sÞ
        Create the MIC token for a SSH2 message.

        :param str session_id: The SSH session ID
        :param bool gss_kex: Generate the MIC for GSS-API Key Exchange or not
        :return: gssapi-with-mic:
                 Returns the MIC token from GSS-API for the message we created
                 with ``_ssh_build_mic``.
                 gssapi-keyex:
                 Returns the MIC token from GSS-API with the SSH session ID as
                 message.
        (RR>RRRRtget_micR(R R<tgss_kext	mic_fieldt	mic_token((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytssh_get_mic s
	cCsX||_||_|jdkr3tjƒ|_n|jj|ƒ}|jj|_|S(s³
        Accept a GSS-API context (server mode).

        :param str hostname: The servers hostname
        :param str username: The name of the user who attempts to login
        :param str recv_token: The GSS-API Token received from the server,
                               if it's not the initial call.
        :return: A ``String`` if the GSS-API has returned a token or ``None``
                if no token was returned
        N(	RRRRRBt
AcceptContextRRRWR(R thostnameRYR%R]((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytssh_accept_sec_context9s		cCsu||_||_|jdk	r[|j|j|j|j|jƒ}|jj||ƒn|jj|j|ƒdS(st
        Verify the MIC token for a SSH2 message.

        :param str mic_token: The MIC token received from the client
        :param str session_id: The SSH session ID
        :param str username: The name of the user who attempts to login
        :return: None if the MIC check was successful
        :raises: ``gssapi.GSSException`` -- if the MIC check failed
        N(	RRRR>RRRt
verify_micR(R RcR<R%Rb((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyt
ssh_check_micMs
		cCs|jjdk	rtStS(s‘
        Checks if credentials are delegated (server mode).

        :return: ``True`` if credentials are delegated, otherwise ``False``
        N(Rtdelegated_credRR3R(R ((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytcredentials_delegatedfscCs
t‚dS(s~
        Save the Client token in a file. This is used by the SSH server
        to store the client credentials if credentials are delegated
        (server mode).

        :param str client_token: The GSS-API token received form the client
        :raises:
            ``NotImplementedError`` -- Credential delegation is currently not
            supported in server mode
        N(tNotImplementedError(R tclient_token((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pytsave_client_credsqsN(
R?R@RAR!RR_RRdRgRitpropertyRkRn(((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR	Ùs	.RcBsbeZdZd„Zdddd„Zed„Zd„Zdd„Z	e
d„ƒZd„ZRS(	sf
    Implementation of the Microsoft SSPI Kerberos Authentication for SSH2.

    :see: `.GSSAuth`
    cCsPtj|||ƒ|jr9tjtjBtjB|_ntjtjB|_dS(sÝ
        :param str auth_method: The name of the SSH authentication mechanism
                                (gssapi-with-mic or gss-keyex)
        :param bool gss_deleg_creds: Delegate client credentials or not
        N(RR!RtsspicontISC_REQ_INTEGRITYtISC_REQ_MUTUAL_AUTHtISC_REQ_DELEGATERG(R RR((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR!…s	
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Cs||_||_d}d|j}|d	k	rmtj|ƒ\}}|jƒ|jkrmtdƒ‚qmnyY|d	kr tj	dd|j
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}	Wn,tdjtjƒd|jƒƒ‚nX|dkrt|_d	}	n|	S(
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        Initialize a SSPI context.

        :param str username: The name of the user who attempts to login
        :param str target: The FQDN of the target to connect to
        :param str desired_mech: The negotiated SSPI mechanism
                                 ("pseudo negotiated" mechanism, because we
                                 support just the krb5 mechanism :-))
        :param recv_token: The SSPI token received from the Server
        :raises:
            `.SSHException` -- Is raised if the desired mechanism of the client
            is not supported
        :return: A ``String`` if the SSPI has returned a token or ``None`` if
                 no token was returned
        ishost/sUnsupported mechanism OID.tKerberostscflagst	targetspns{0}, Target: {1}iN(RRRRR1R2RRtsspit
ClientAuthRGRt	authorizetBuffert	ExceptionRTRURVR3R(
R RXR4R%RYterrorRZR5R6R]((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyR_™s.		
		cCsa||_|sH|j|j|j|j|jƒ}|jj|ƒ}n|jj|jƒ}|S(sÚ
        Create the MIC token for a SSH2 message.

        :param str session_id: The SSH session ID
        :param bool gss_kex: Generate the MIC for Key Exchange with SSPI or not
        :return: gssapi-with-mic:
                 Returns the MIC token from SSPI for the message we created
                 with ``_ssh_build_mic``.
                 gssapi-keyex:
                 Returns the MIC token from SSPI with the SSH session ID as
                 message.
        (RR>RRRRtsignR(R R<RaRbRc((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRdÉs
	cCs~||_||_d|j}tjdd|ƒ|_|jj|ƒ\}}|dj}|dkrzt|_d}n|S(s§
        Accept a SSPI context (server mode).

        :param str hostname: The servers FQDN
        :param str username: The name of the user who attempts to login
        :param str recv_token: The SSPI Token received from the server,
                               if it's not the initial call.
        :return: A ``String`` if the SSPI has returned a token or ``None`` if
                 no token was returned
        shost/RttspniN(
RRRwt
ServerAuthRRyRzR3RR(R RfR%RYRZR|R]((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRgâs		

		cCsr||_||_|dk	rX|j|j|j|j|jƒ}|jj||ƒn|jj|j|ƒdS(sk
        Verify the MIC token for a SSH2 message.

        :param str mic_token: The MIC token received from the client
        :param str session_id: The SSH session ID
        :param str username: The name of the user who attempts to login
        :return: None if the MIC check was successful
        :raises: ``sspi.error`` -- if the MIC check failed
        N(	RRRR>RRRtverifyR(R RcR<R%Rb((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRiøs
		cCs |jtj@o|jp|jS(s‘
        Checks if credentials are delegated (server mode).

        :return: ``True`` if credentials are delegated, otherwise ``False``
        (RGRpRsR(R ((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRkscCs
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        Save the Client token in a file. This is used by the SSH server
        to store the client credentails if credentials are delegated
        (server mode).

        :param str client_token: The SSPI token received form the client
        :raises:
            ``NotImplementedError`` -- Credential delegation is currently not
            supported in server mode
        N(Rl(R Rm((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRn sN(
R?R@RAR!RR_RRdRgRiRoRkRn(((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyRs	/	(RAR8R
RUR3tGSS_AUTH_AVAILABLEtpyasn1.type.univRtpyasn1.codec.derRRtparamiko.commonRtparamiko.ssh_exceptionRRRBR
tOSErrorRpRwRRRtobjectRR	R(((sE/home/tvault/.virtenv/lib/python2.7/site-packages/paramiko/ssh_gss.pyt<module>s.

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