Pc@sYdZddlZddlZddlZddlZddlZddlZddlZddlZddl m Z ddl m Z ddl mZddlTddlmZmZddlmZdd lmZdd lmZdd lmZdd lmZmZdd lmZddl m!Z!ddl"m#Z#ddl$m%Z%ddl&m'Z'm(Z(m)Z)ddl*m+Z+ddl,m-Z-m.Z.m/Z/m0Z0ddl1m2Z2m3Z3yddl4m5Z5Wn!e6k rddl7m5Z5nXgZ8dZ9ddl:Z:e:j;e9de<fdYZ=de<fdYZ>dej?fdYZ@dS(s. L{Transport} handles the core SSH2 protocol. iN(tutil(t AuthHandler(tChannel(t*(tZlibCompressortZlibDecompressor(tDSSKey(tKexGex(t KexGroup1(tMessage(t PacketizertNeedRekeyException(t ModulusPack(tRSAKey(tServerInterface(t SFTPClient(t SSHExceptiontBadAuthenticationTypetChannelException(tRandom(tBlowfishtAEStDES3tARC4(tSHAtMD5(tCountercCsxtD]}|jqWdS(N(t_active_threadst stop_thread(tthr((s-..\python\site-packages\paramiko\transport.pyt_join_lingering_threads;s tSecurityOptionscBseZdZddddddgZdZdZd Zd Zd Zd Z d Z dZ dZ dZ dZdZdZeee ddZeee ddZeeeddZee eddZee eddZRS(s8 Simple object containing the security preferences of an ssh transport. These are tuples of acceptable ciphers, digests, key types, and key exchange algorithms, listed in order of preference. Changing the contents and/or order of these fields affects the underlying L{Transport} (but only if you change them before starting the session). If you try to add an algorithm that paramiko doesn't recognize, C{ValueError} will be raised. If you try to assign something besides a tuple to one of the fields, C{TypeError} will be raised. tcipherstdigestst key_typestkext compressiont _transportcCs ||_dS(N(R%(tselft transport((s-..\python\site-packages\paramiko\transport.pyt__init__PscCsdt|jS(se Returns a string representation of this object, for debugging. @rtype: str s!(treprR%(R&((s-..\python\site-packages\paramiko\transport.pyt__repr__SscCs |jjS(N(R%t_preferred_ciphers(R&((s-..\python\site-packages\paramiko\transport.pyt _get_ciphers[scCs |jjS(N(R%t_preferred_macs(R&((s-..\python\site-packages\paramiko\transport.pyt _get_digests^scCs |jjS(N(R%t_preferred_keys(R&((s-..\python\site-packages\paramiko\transport.pyt_get_key_typesascCs |jjS(N(R%t_preferred_kex(R&((s-..\python\site-packages\paramiko\transport.pyt_get_kexdscCs |jjS(N(R%t_preferred_compression(R&((s-..\python\site-packages\paramiko\transport.pyt_get_compressiongscst|tkr!t|}nt|tk rBtdnt|j|jtfd|}t|dkrt dnt |j||dS(Nsexpected tuple or listcs |kS(N((tn(tpossible(s-..\python\site-packages\paramiko\transport.pytpsisunknown cipher( ttypetlistttuplet TypeErrortgetattrR%tkeystfiltertlent ValueErrortsetattr(R&tnametorigtxt forbidden((R6s-..\python\site-packages\paramiko\transport.pyt_setjscCs|jdd|dS(NR+t _cipher_info(RF(R&RD((s-..\python\site-packages\paramiko\transport.pyt _set_ciphersuscCs|jdd|dS(NR-t _mac_info(RF(R&RD((s-..\python\site-packages\paramiko\transport.pyt _set_digestsxscCs|jdd|dS(NR/t _key_info(RF(R&RD((s-..\python\site-packages\paramiko\transport.pyt_set_key_types{scCs|jdd|dS(NR1t _kex_info(RF(R&RD((s-..\python\site-packages\paramiko\transport.pyt_set_kex~scCs|jdd|dS(NR3t_compression_info(RF(R&RD((s-..\python\site-packages\paramiko\transport.pyt_set_compressionssSymmetric encryption cipherss Digest (one-way hash) algorithmssPublic-key algorithmssKey exchange algorithmssCompression algorithmsN(t__name__t __module__t__doc__t __slots__R(R*R,R.R0R2R4RFRHRJRLRNRPtpropertytNoneR R!R"R#R$(((s-..\python\site-packages\paramiko\transport.pyRBs0                    t ChannelMapcBs>eZdZdZdZdZdZdZRS(cCs"tj|_tj|_dS(N(tweakreftWeakValueDictionaryt_mapt threadingtLockt_lock(R&((s-..\python\site-packages\paramiko\transport.pyR(scCs3|jjz||j|Z=d?Z>dne6d@Z?dndAZ@d9dBZAdCZBdDZCdEZDdFZEe6dGZFdHZGdIZHdJZIdKZJdLZKdMZLdNZMdOZNdPZOdQZPdRZQdSZRdTZSdUZTdVZUdWZVdXZWdYZXdZZYd[ZZd\Z[d]Z\d^Z]d_Z^d`Z_daZ`dbZadcZbddZcdeZddfZedgZfdhZgie^eh6e`ei6eaej6ebek6ecel6edem6eeen6eWeo6Zpieqjres6eqjteu6eqjvew6eqjxey6eqjze{6eqj|e}6eqj~e6eqje6ZRS(ps8 An SSH Transport attaches to a stream (usually a socket), negotiates an encrypted session, authenticates, and then creates stream tunnels, called L{Channel}s, across the session. Multiple channels can be multiplexed across a single session (and often are, in the case of port forwardings). s2.0sparamiko_1.7.7.1s aes128-ctrs aes256-ctrs aes128-cbcs blowfish-cbcs aes256-cbcs3des-cbct arcfour128t arcfour256s hmac-sha1shmac-md5s hmac-sha1-96s hmac-md5-96sssh-rsasssh-dsssdiffie-hellman-group1-sha1s"diffie-hellman-group-exchange-sha1tnonetclasstmodeis block-sizeskey-sizei iiitsizei szlib@openssh.comtzlibcCst|ttfri|jdd}t|dkrL|ddf}qi|dt|df}nt|tkrN|\}}d}xtj ||tj tj D]\}}}} } |tj kr|} | } tj| tj }y|j ||fWn"tj k r,} t| }q1XPqqWtd||fntjj||jtt|_||_y|jjdWntk rnXt||_d|jd |j|_d |_d |_|_d|_!|_"d|_#|_$d|_%|_&d|_'d|_(d|_)d|_*d|_+d|_,t-|_.t-|_/t-|_0t-|_1t|_2tj3|_4t5|_6i|_7i|_8d|_9d |_:d |_;d|_<d|_=d|_>tj?|_@tj3|_Ad |_Bd|_CtDjE|jC|_F|jjG|jFd|_Hd|_Id|_Jd|_Kt-|_Ld|_Mi|_Ng|_OtjP|j4|_Qi|_RdS(s Create a new SSH session over an existing socket, or socket-like object. This only creates the Transport object; it doesn't begin the SSH session yet. Use L{connect} or L{start_client} to begin a client session, or L{start_server} to begin a server session. If the object is not actually a socket, it must have the following methods: - C{send(str)}: Writes from 1 to C{len(str)} bytes, and returns an int representing the number of bytes written. Returns 0 or raises C{EOFError} if the stream has been closed. - C{recv(int)}: Reads from 1 to C{int} bytes and returns them as a string. Returns 0 or raises C{EOFError} if the stream has been closed. - C{close()}: Closes the socket. - C{settimeout(n)}: Sets a (float) timeout on I/O operations. For ease of use, you may also pass in an address (as a tuple) or a host string as the C{sock} argument. (A host string is a hostname with an optional port (separated by C{":"}) which will be converted into a tuple of C{(hostname, port)}.) A socket will be connected to this address and used for communication. Exceptions from the C{socket} call may be thrown in this case. @param sock: a socket or socket-like object to create the session over. @type sock: socket t:iiisNo suitable address familysUnable to connect to %s: %sg?sSSH-t-tiig>@sparamiko.transportiN(St isinstancetstrtunicodetsplitR?tintR8R:tsockett getaddrinfot AF_UNSPECt SOCK_STREAMtconnectterrorRR[tThreadR(t setDaemontTruetrngtsockt settimeouttAttributeErrorR t packetizert _PROTO_IDt _CLIENT_IDt local_versiontremote_versiont local_ciphert remote_cipherRVtlocal_kex_inittremote_kex_initt local_mact remote_mactlocal_compressiontremote_compressiont session_idt host_key_typethost_keyt kex_enginetHtKtFalsetactivetinitial_kex_donetin_kext authenticatedt_expected_packetR\tlockRWt _channelstchannel_eventst channels_seent_channel_countert window_sizetmax_packet_sizet _x11_handlert _tcp_handlertsaved_exceptiontEventt clear_to_sendtclear_to_send_locktclear_to_send_timeouttlog_nameRt get_loggertloggertset_logt auth_handlertglobal_responsetcompletion_eventtbanner_timeoutt server_modet server_objecttserver_key_dicttserver_acceptst Conditiontserver_accept_cvtsubsystem_table(R&Rthlthostnametporttreasontfamilytsocktypetprotot canonnametsockaddrtaftaddrte((s-..\python\site-packages\paramiko\transport.pyR(s 4                                   cCsdttt|d@}|js6|d7}n|jdkrq|d|j|j|jddf7}n|jr|dt|j7}n |j r|d 7}n |d 7}|d 7}|S( se Returns a string representation of this object, for debugging. @rtype: str s( thextlongtidRRRGtis_authenticatedR?RR(R&tout((s-..\python\site-packages\paramiko\transport.pyR*os          cCs|jj|jdS(s Terminate this Transport without closing the session. On posix systems, if a Transport is open during process forking, both parent and child will share the underlying socket, but only one process can use the connection (without corrupting the session). Use this method to clean up a Transport object without disrupting the other process. @since: 1.5.3 N(Rtclose(R&((s-..\python\site-packages\paramiko\transport.pytatforks cCs t|S(sw Return a L{SecurityOptions} object which can be used to tweak the encryption algorithms this transport will permit, and the order of preference for them. @return: an object that can be used to change the preferred algorithms for encryption, digest (hash), public key, and key exchange. @rtype: L{SecurityOptions} (R(R&((s-..\python\site-packages\paramiko\transport.pytget_security_optionss cCst|_|dk r,||_|jdStj|_}|jtjx`tr|j d|js|j }|dk r|nt dn|j rVPqVqVWdS(s Negotiate a new SSH2 session as a client. This is the first step after creating a new L{Transport}. A separate thread is created for protocol negotiation. If an event is passed in, this method returns immediately. When negotiation is done (successful or not), the given C{Event} will be triggered. On failure, L{is_active} will return C{False}. (Since 1.4) If C{event} is C{None}, this method will not return until negotation is done. On success, the method returns normally. Otherwise an SSHException is raised. After a successful negotiation, you will usually want to authenticate, calling L{auth_password } or L{auth_publickey }. @note: L{connect} is a simpler method for connecting as a client. @note: After calling this method (or L{start_server} or L{connect}), you should no longer directly read from or write to the original socket object. @param event: an event to trigger when negotiation is complete (optional) @type event: threading.Event @raise SSHException: if negotiation fails (and no C{event} was passed in) Ng?sNegotiation failed.( RRRVRtstartR[RRRtwaitt get_exceptionRtisSet(R&teventR((s-..\python\site-packages\paramiko\transport.pyt start_clients"             cCs|dkrt}nt|_||_t|_|dk rV||_|jdStj |_}|jx`tr|j d|js|j }|dk r|nt dn|j rvPqvqvWdS(s[ Negotiate a new SSH2 session as a server. This is the first step after creating a new L{Transport} and setting up your server host key(s). A separate thread is created for protocol negotiation. If an event is passed in, this method returns immediately. When negotiation is done (successful or not), the given C{Event} will be triggered. On failure, L{is_active} will return C{False}. (Since 1.4) If C{event} is C{None}, this method will not return until negotation is done. On success, the method returns normally. Otherwise an SSHException is raised. After a successful negotiation, the client will need to authenticate. Override the methods L{get_allowed_auths }, L{check_auth_none }, L{check_auth_password }, and L{check_auth_publickey } in the given C{server} object to control the authentication process. After a successful authentication, the client should request to open a channel. Override L{check_channel_request } in the given C{server} object to allow channels to be opened. @note: After calling this method (or L{start_client} or L{connect}), you should no longer directly read from or write to the original socket object. @param event: an event to trigger when negotiation is complete. @type event: threading.Event @param server: an object used to perform authentication and create L{Channel}s. @type server: L{server.ServerInterface} @raise SSHException: if negotiation fails (and no C{event} was passed in) Ng?sNegotiation failed.(RVRRRRRRRR[RRRRR(R&RtserverR((s-..\python\site-packages\paramiko\transport.pyt start_servers((                cCs||j|j} or L{DSSKey }. @type key: L{PKey } N(Rtget_name(R&tkey((s-..\python\site-packages\paramiko\transport.pytadd_server_keys cCs*y|j|jSWntk r%nXdS(s Return the active host key, in server mode. After negotiating with the client, this method will return the negotiated host key. If only one type of host key was set with L{add_server_key}, that's the only key that will ever be returned. But in cases where you have set more than one type of host key (for example, an RSA key and a DSS key), the key type will be negotiated by the client, and this method will return the key of the type agreed on. If the host key has not been negotiated yet, C{None} is returned. In client mode, the behavior is undefined. @return: host key of the type negotiated by the client, or C{None}. @rtype: L{PKey } N(RRRdRV(R&((s-..\python\site-packages\paramiko\transport.pytget_server_key!s  cCsttt_ddg}|dk r:|jd|nx:|D]2}ytjj|tSWqAtk rrqAXqAWdt_t S(s I{(optional)} Load a file of prime moduli for use in doing group-exchange key negotiation in server mode. It's a rather obscure option and can be safely ignored. In server mode, the remote client may request "group-exchange" key negotiation, which asks the server to send a random prime number that fits certain criteria. These primes are pretty difficult to compute, so they can't be generated on demand. But many systems contain a file of suitable primes (usually named something like C{/etc/ssh/moduli}). If you call C{load_server_moduli} and it returns C{True}, then this file of primes has been loaded and we will support "group-exchange" in server mode. Otherwise server mode will just claim that it doesn't support that method of key negotiation. @param filename: optional path to the moduli file, if you happen to know that it's not in a standard location. @type filename: str @return: True if a moduli file was successfully loaded; False otherwise. @rtype: bool @note: This has no effect when used in client mode. s/etc/ssh/modulis/usr/local/etc/moduliiN( R RRht _modulus_packRVtinsertt read_fileRtIOErrorR(tfilenamet file_listtfn((s-..\python\site-packages\paramiko\transport.pytload_server_moduli5s     cCsU|js dSt|_|jj|jx!|jjD]}|jq=WdS(sP Close this session, and any open channels that are tied to it. N(RRRRtjoinRRft_unlink(R&Ra((s-..\python\site-packages\paramiko\transport.pyR_s    cCs*|j s|j r#tdn|jS(s Return the host key of the server (in client mode). @note: Previously this call returned a tuple of (key type, key string). You can get the same effect by calling L{PKey.get_name } for the key type, and C{str(key)} for the key string. @raise SSHException: if no session is currently active. @return: public key of the remote server @rtype: L{PKey } sNo existing session(RRRR(R&((s-..\python\site-packages\paramiko\transport.pytget_remote_server_keykscCs|jS(s Return true if this session is active (open). @return: True if the session is still active (open); False if the session is closed @rtype: bool (R(R&((s-..\python\site-packages\paramiko\transport.pyt is_active}scCs |jdS(s. Request a new channel to the server, of type C{"session"}. This is just an alias for C{open_channel('session')}. @return: a new L{Channel} @rtype: L{Channel} @raise SSHException: if the request is rejected or the session ends prematurely tsession(t open_channel(R&((s-..\python\site-packages\paramiko\transport.pyt open_sessions cCs|jdd|S(s Request a new channel to the client, of type C{"x11"}. This is just an alias for C{open_channel('x11', src_addr=src_addr)}. @param src_addr: the source address of the x11 server (port is the x11 port, ie. 6010) @type src_addr: (str, int) @return: a new L{Channel} @rtype: L{Channel} @raise SSHException: if the request is rejected or the session ends prematurely tx11tsrc_addr(R(R&R((s-..\python\site-packages\paramiko\transport.pytopen_x11_channelscCs7|\}}|\}}|jd||f||fS(s Request a new channel back to the client, of type C{"forwarded-tcpip"}. This is used after a client has requested port forwarding, for sending incoming connections back to the client. @param src_addr: originator's address @param src_port: originator's port @param dest_addr: local (server) connected address @param dest_port: local (server) connected port sforwarded-tcpip(R(R&t.1t.2Rtsrc_portt dest_addrt dest_port((s-..\python\site-packages\paramiko\transport.pytopen_forwarded_tcpip_channels c CsU|jstdn|jjz\|j}t}|jtt|j ||j ||j |j |j |j |dks|dkr|j |d|j |d|j |d|j |dn1|dkr|j |d|j |dnt |}|jj||tj|j|<}t|j|<|j||j|j |j Wd|jjX|j|x`tr|jd|js|j}|dkrtd }n|n|jrPqqW|jj|}|dk r$|S|j}|dkrKtd }n|dS( s  Request a new channel to the server. L{Channel}s are socket-like objects used for the actual transfer of data across the session. You may only request a channel after negotiating encryption (using L{connect} or L{start_client}) and authenticating. @param kind: the kind of channel requested (usually C{"session"}, C{"forwarded-tcpip"}, C{"direct-tcpip"}, or C{"x11"}) @type kind: str @param dest_addr: the destination address of this port forwarding, if C{kind} is C{"forwarded-tcpip"} or C{"direct-tcpip"} (ignored for other channel types) @type dest_addr: (str, int) @param src_addr: the source address of this port forwarding, if C{kind} is C{"forwarded-tcpip"}, C{"direct-tcpip"}, or C{"x11"} @type src_addr: (str, int) @return: a new L{Channel} on success @rtype: L{Channel} @raise SSHException: if the request is rejected or the session ends prematurely sSSH session not activesforwarded-tcpips direct-tcpipiiRNg?sUnable to open channel.(RRRR^t _next_channelR tadd_bytetchrtMSG_CHANNEL_OPENt add_stringtadd_intRRRRRbR[RRRRt_set_transportt _set_windowR_t_send_user_messageRRRVRRc( R&tkindRRR`tmRaRR((s-..\python\site-packages\paramiko\transport.pyRsV                     csjstdnt|}t|}jd||fdt}|dkritdn|dkr|j}n|dkrfd}|}n|_|S(s Ask the server to forward TCP connections from a listening port on the server, across this SSH session. If a handler is given, that handler is called from a different thread whenever a forwarded connection arrives. The handler parameters are:: handler(channel, (origin_addr, origin_port), (server_addr, server_port)) where C{server_addr} and C{server_port} are the address and port that the server was listening on. If no handler is set, the default behavior is to send new incoming forwarded connections into the accept queue, to be picked up via L{accept}. @param address: the address to bind when forwarding @type address: str @param port: the port to forward, or 0 to ask the server to allocate any port @type port: int @param handler: optional handler for incoming forwarded connections @type handler: function(Channel, (str, int), (str, int)) @return: the port # allocated by the server @rtype: int @raise SSHException: if the server refused the TCP forward request sSSH session not actives tcpip-forwardRsTCP forwarding request deniedics)|\}}|\}}j|dS(N(t_queue_incoming_channel(tchannelRRRRRR(R&(s-..\python\site-packages\paramiko\transport.pytdefault_handlersN( RRRtRwtglobal_requestRRVtget_intR(R&taddressRthandlertresponseR((R&s-..\python\site-packages\paramiko\transport.pytrequest_port_forwards        cCs6|js dSd|_|jd||fdtdS(sY Ask the server to cancel a previous port-forwarding request. No more connections to the given address & port will be forwarded across this ssh connection. @param address: the address to stop forwarding @type address: str @param port: the port to stop forwarding @type port: int Nscancel-tcpip-forwardR(RRVRRR(R&RR((s-..\python\site-packages\paramiko\transport.pytcancel_port_forward"s  cCs tj|S(s\ Create an SFTP client channel from an open transport. On success, an SFTP session will be opened with the remote host, and a new SFTPClient object will be returned. @return: a new L{SFTPClient} object, referring to an sftp session (channel) across this transport @rtype: L{SFTPClient} (Rtfrom_transport(R&((s-..\python\site-packages\paramiko\transport.pytopen_sftp_client2s cCsot}|jtt|dkrHttjddd}n|jtj||j |dS(s Send a junk packet across the encrypted link. This is sometimes used to add "noise" to a connection to confuse would-be attackers. It can also be used as a keep-alive for long lived connections traversing firewalls. @param bytes: the number of random bytes to send in the payload of the ignored packet -- defaults to a random number from 10 to 41. @type bytes: int ii i N( R RRt MSG_IGNORERVtordRtreadt add_bytesR(R&tbytesR((s-..\python\site-packages\paramiko\transport.pyt send_ignore>s   cCstj|_|jxftr|jjd|jsk|j}|dk r\|nt dn|jj rPqqWdS(s8 Force this session to switch to new keys. Normally this is done automatically after the session hits a certain number of packets or bytes sent or received, but this method gives you the option of forcing new keys whenever you want. Negotiating new keys causes a pause in traffic both ways as the two sides swap keys and do computations. This method returns when the session has switched to new keys. @raise SSHException: if the key renegotiation failed (which causes the session to end) g?sNegotiation failed.N( R[RRt_send_kex_initRRRRRVRR(R&R((s-..\python\site-packages\paramiko\transport.pytrenegotiate_keysPs       cCs&|jj|tj|ddS(s Turn on/off keepalive packets (default is off). If this is set, after C{interval} seconds without sending any data over the connection, a "keepalive" packet will be sent (and ignored by the remote host). This can be useful to keep connections alive over a NAT, for example. @param interval: seconds to wait before sending a keepalive packet (or 0 to disable keepalives). @type interval: int cSs|jddtS(Nskeepalive@lag.netR(RR(RD((s-..\python\site-packages\paramiko\transport.pyR7usN(Rt set_keepaliveRXtproxy(R&tinterval((s-..\python\site-packages\paramiko\transport.pyRis cCs|rtj|_nt}|jtt|j||j||dk rj|j |n|j t d||j ||sdSx:tr|jjd|jsdS|jjrPqqW|jS(s Make a global request to the remote host. These are normally extensions to the SSH2 protocol. @param kind: name of the request. @type kind: str @param data: an optional tuple containing additional data to attach to the request. @type data: tuple @param wait: C{True} if this method should not return until a response is received; C{False} otherwise. @type wait: bool @return: a L{Message} containing possible additional data if the request was successful (or an empty L{Message} if C{wait} was C{False}); C{None} if the request was denied. @rtype: L{Message} sSending global request "%s"g?N(R[RRR RRtMSG_GLOBAL_REQUESTRt add_booleanRVtaddt_logtDEBUGRRRRRR(R&RtdataRR((s-..\python\site-packages\paramiko\transport.pyRws&       cCs|jjznt|jdkr:|jjd}n@|jj|t|jdkrt|jjd}nd}Wd|jjX|S(s Return the next channel opened by the client over this transport, in server mode. If no channel is opened before the given timeout, C{None} is returned. @param timeout: seconds to wait for a channel, or C{None} to wait forever @type timeout: int @return: a new Channel opened by the client @rtype: L{Channel} iN( RR^R?RtpopRRRVR_(R&ttimeoutRa((s-..\python\site-packages\paramiko\transport.pytaccepts  RrcCsu|dk r!|jg|_n|j|dk r|j}|j|jksst|t|kr|jtd|jtd|jtt|f|jtd|jtt|ft dn|jtd|jn|dk s|dk rq|dk rN|jtd|j ||qq|jtd|j ||ndS(s Negotiate an SSH2 session, and optionally verify the server's host key and authenticate using a password or private key. This is a shortcut for L{start_client}, L{get_remote_server_key}, and L{Transport.auth_password} or L{Transport.auth_publickey}. Use those methods if you want more control. You can use this method immediately after creating a Transport to negotiate encryption with a server. If it fails, an exception will be thrown. On success, the method will return cleanly, and an encrypted session exists. You may immediately call L{open_channel} or L{open_session} to get a L{Channel} object, which is used for data transfer. @note: If you fail to supply a password or private key, this method may succeed, but a subsequent L{open_channel} or L{open_session} call may fail because you haven't authenticated yet. @param hostkey: the host key expected from the server, or C{None} if you don't want to do host key verification. @type hostkey: L{PKey} @param username: the username to authenticate as. @type username: str @param password: a password to use for authentication, if you want to use password authentication; otherwise C{None}. @type password: str @param pkey: a private key to use for authentication, if you want to use private key authentication; otherwise C{None}. @type pkey: L{PKey} @raise SSHException: if the SSH2 negotiation fails, the host key supplied by the server is incorrect, or authentication fails. sBad host key from serversExpected: %s: %ssGot : %s: %ssHost key verified (%s)sAttempting password auth...sAttempting public-key auth...N( RVRR/RRRtRRR)Rt auth_passwordtauth_publickey(R&thostkeytusernametpasswordtpkeyR((s-..\python\site-packages\paramiko\transport.pyR|s$"    0,, cCs<|jjz|j}d|_|SWd|jjXdS(s} Return any exception that happened during the last server request. This can be used to fetch more specific error information after using calls like L{start_client}. The exception (if any) is cleared after this call. @return: an exception, or C{None} if there is no stored exception. @rtype: Exception @since: 1.1 N(RR^RRVR_(R&R((s-..\python\site-packages\paramiko\transport.pyRs   cOs<z'|jj|||f|j|tj}n|}t||_|jj|||dk rygSy|jj |SWnnt k r}| sd|j krny#fd}|j ||SWqtk r}|qXnXdS(s Authenticate to the server using a password. The username and password are sent over an encrypted link. If an C{event} is passed in, this method will return immediately, and the event will be triggered once authentication succeeds or fails. On success, L{is_authenticated} will return C{True}. On failure, you may use L{get_exception} to get more detailed error information. Since 1.1, if no event is passed, this method will block until the authentication succeeds or fails. On failure, an exception is raised. Otherwise, the method simply returns. Since 1.5, if no event is passed and C{fallback} is C{True} (the default), if the server doesn't support plain password authentication but does support so-called "keyboard-interactive" mode, an attempt will be made to authenticate using this interactive mode. If it fails, the normal exception will be thrown as if the attempt had never been made. This is useful for some recent Gentoo and Debian distributions, which turn off plain password authentication in a misguided belief that interactive authentication is "more secure". (It's not.) If the server requires multi-step authentication (which is very rare), this method will return a list of auth types permissible for the next step. Otherwise, in the normal case, an empty list is returned. @param username: the username to authenticate as @type username: str @param password: the password to authenticate with @type password: str or unicode @param event: an event to trigger when the authentication attempt is complete (whether it was successful or not) @type event: threading.Event @param fallback: C{True} if an attempt at an automated "interactive" password auth should be made if the server doesn't support normal password auth @type fallback: bool @return: list of auth types permissible for the next stage of authentication (normally empty) @rtype: list @raise BadAuthenticationType: if password authentication isn't allowed by the server for this user (and no event was passed in) @raise AuthenticationException: if the authentication failed (and no event was passed in) @raise SSHException: if there was a network error sNo existing sessionskeyboard-interactivecs>t|dkr!tdnt|dkr7gSgS(NisFallback authentication failed.i(R?R(ttitlet instructionstfields(R#(s-..\python\site-packages\paramiko\transport.pyRs N( RRRRVR[RRRRR*Rt allowed_typestauth_interactive( R&R"R#RtfallbackR+RDRtignored((R#s-..\python\site-packages\paramiko\transport.pyRPs(0   cCs|j s|j r#tdn|dkr>tj}n|}t||_|jj||||dk rygS|jj |S(s Authenticate to the server using a private key. The key is used to sign data from the server, so it must include the private part. If an C{event} is passed in, this method will return immediately, and the event will be triggered once authentication succeeds or fails. On success, L{is_authenticated} will return C{True}. On failure, you may use L{get_exception} to get more detailed error information. Since 1.1, if no event is passed, this method will block until the authentication succeeds or fails. On failure, an exception is raised. Otherwise, the method simply returns. If the server requires multi-step authentication (which is very rare), this method will return a list of auth types permissible for the next step. Otherwise, in the normal case, an empty list is returned. @param username: the username to authenticate as @type username: string @param key: the private key to authenticate with @type key: L{PKey } @param event: an event to trigger when the authentication attempt is complete (whether it was successful or not) @type event: threading.Event @return: list of auth types permissible for the next stage of authentication (normally empty) @rtype: list @raise BadAuthenticationType: if public-key authentication isn't allowed by the server for this user (and no event was passed in) @raise AuthenticationException: if the authentication failed (and no event was passed in) @raise SSHException: if there was a network error sNo existing sessionN( RRRRVR[RRRR R*(R&R"RRR+((s-..\python\site-packages\paramiko\transport.pyR s#  cCsg|j s|j r#tdntj}t||_|jj|||||jj|S(s( Authenticate to the server interactively. A handler is used to answer arbitrary questions from the server. On many servers, this is just a dumb wrapper around PAM. This method will block until the authentication succeeds or fails, peroidically calling the handler asynchronously to get answers to authentication questions. The handler may be called more than once if the server continues to ask questions. The handler is expected to be a callable that will handle calls of the form: C{handler(title, instructions, prompt_list)}. The C{title} is meant to be a dialog-window title, and the C{instructions} are user instructions (both are strings). C{prompt_list} will be a list of prompts, each prompt being a tuple of C{(str, bool)}. The string is the prompt and the boolean indicates whether the user text should be echoed. A sample call would thus be: C{handler('title', 'instructions', [('Password:', False)])}. The handler should return a list or tuple of answers to the server's questions. If the server requires multi-step authentication (which is very rare), this method will return a list of auth types permissible for the next step. Otherwise, in the normal case, an empty list is returned. @param username: the username to authenticate as @type username: string @param handler: a handler for responding to server questions @type handler: callable @param submethods: a string list of desired submethods (optional) @type submethods: str @return: list of auth types permissible for the next stage of authentication (normally empty). @rtype: list @raise BadAuthenticationType: if public-key authentication isn't allowed by the server for this user @raise AuthenticationException: if the authentication failed @raise SSHException: if there was a network error @since: 1.5 sNo existing session( RRRR[RRRR0R*(R&R"Rt submethodsR+((s-..\python\site-packages\paramiko\transport.pyR0s . cCs2||_tj||_|jj|jdS(sp Set the channel for this transport's logging. The default is C{"paramiko.transport"} but it can be set to anything you want. (See the C{logging} module for more info.) SSH Channels will log to a sub-channel of the one specified. @param name: new channel name for logging @type name: str @since: 1.1 N(RRRRRR(R&RB((s-..\python\site-packages\paramiko\transport.pytset_log_channel s cCs|jS(s Return the channel name used for this transport's logging. @return: channel name. @rtype: str @since: 1.2 (R(R&((s-..\python\site-packages\paramiko\transport.pytget_log_channels cCs|jj|dS(sj Turn on/off logging a hex dump of protocol traffic at DEBUG level in the logs. Normally you would want this off (which is the default), but if you are debugging something, it may be useful. @param hexdump: C{True} to log protocol traffix (in hex) to the log; C{False} otherwise. @type hexdump: bool N(Rt set_hexdump(R&thexdump((s-..\python\site-packages\paramiko\transport.pyR6%s cCs |jjS(s Return C{True} if the transport is currently logging hex dumps of protocol traffic. @return: C{True} if hex dumps are being logged @rtype: bool @since: 1.4 (Rt get_hexdump(R&((s-..\python\site-packages\paramiko\transport.pyR81s cCs|rd|_n d|_dS(s Turn on/off compression. This will only have an affect before starting the transport (ie before calling L{connect}, etc). By default, compression is off since it negatively affects interactive sessions. @param compress: C{True} to ask the remote client/server to compress traffic; C{False} to refuse compression @type compress: bool @since: 1.5.2 szlib@openssh.comRoRkN(szlib@openssh.comszlibRk(Rk(R3(R&tcompress((s-..\python\site-packages\paramiko\transport.pytuse_compression=s  cCs,t|jdd}|dkr%dS|S(sy Return the address of the remote side of this Transport, if possible. This is effectively a wrapper around C{'getpeername'} on the underlying socket. If the socket-like object has no C{'getpeername'} method, then C{("unknown", 0)} is returned. @return: the address if the remote host, if known @rtype: tuple(str, int) t getpeernametunknowniN(sunknowni(R<RRV(R&tgp((s-..\python\site-packages\paramiko\transport.pyR;Ns  cCst|_|jjdS(N(RRRR(R&((s-..\python\site-packages\paramiko\transport.pyR]s cGsVtt|tr<x:|D]}|jj||qWn|jj|||dS(N(t issubclassR8R9Rtlog(R&tleveltmsgtargsR((s-..\python\site-packages\paramiko\transport.pyRes cCs|jS(s0used by KexGex to find primes for group exchange(R(R&((s-..\python\site-packages\paramiko\transport.pyt_get_modulus_packlscCs]|j}x9|jj|dk rD|jdd@|_|j}q W|jdd@|_|S(syou are holding the lockiiN(RRRcRV(R&R`((s-..\python\site-packages\paramiko\transport.pyRps   cCs|jj|dS(s?used by a Channel to remove itself from the active channel listN(RRe(R&R`((s-..\python\site-packages\paramiko\transport.pyt_unlink_channelyscCs|jj|dS(N(Rt send_message(R&R((s-..\python\site-packages\paramiko\transport.pyt _send_message}scCstj}xtr|jjd|jsB|jtddS|jj|jj rbPn|jj tj||j krt dqqWz|j |Wd|jj XdS(s{ send a message, but block if we're in key negotiation. this is used for user-initiated requests. g?s0Dropping user packet because connection is dead.Ns2Key-exchange timed out waiting for key negotiation(ttimeRRRRRRRR^RR_RRRF(R&RR((s-..\python\site-packages\paramiko\transport.pyRs     cCs1||_||_|jdkr-||_ndS(sBused by a kex object to set the K (root key) and H (exchange hash)N(RRRRV(R&tkth((s-..\python\site-packages\paramiko\transport.pyt_set_K_Hs  cGst||_dS(sGused by a kex object to register the next packet type it expects to seeN(R:R(R&tptypes((s-..\python\site-packages\paramiko\transport.pyt_expect_packetscCsu|j|jt|}|dkr7tdn|j|jt|shtd|jn||_dS(NsUnknown host key types#Signature verification (%s) failed.(RKRR RVRtverify_ssh_sigRR(R&RtsigR((s-..\python\site-packages\paramiko\transport.pyt _verify_keys  cCst}|j|j|j|j|j||j|jtjt |j }}x{t ||krt}|j|j|j|j|j|tjt |j }||7}||7}qhW|| S(s0id is 'A' - 'F' for the various keys used by ssh( R t add_mpintRRRRRRtnewRttdigestR?(R&RtnbytesRRtsofarRR((s-..\python\site-packages\paramiko\transport.pyt _compute_keys     cCs||jkr"td|n|d kr]|j|dj|}|jdd|S|jdrtjd|j|d d d tj|t}|j|dj||j|d ||S|j|dj||j|d |SdS(NsUnknown client cipher RiRjRlt is-ctrtnbitss block-sizeit initial_valueRm(RiRj( RGRRQtencrypttendswithRRt inflate_longR(R&RBRtivtciphertcounter((s-..\python\site-packages\paramiko\transport.pyt _get_ciphers 3,cs4|dkr'fd}|_n |_dS(Ncs|\}}j|dS(N(R(RRRR(R&(s-..\python\site-packages\paramiko\transport.pyRs (RVR(R&RR((R&s-..\python\site-packages\paramiko\transport.pyt_set_x11_handlers  cCsC|jjz!|jj||jjWd|jjXdS(N(RR^RtappendRtnotifyR_(R&R((s-..\python\site-packages\paramiko\transport.pyRs  c Csrtj||jrC|jtdttt|d@n*|jtdttt|d@y|jj |j d|j |j |j tx|jrE|jjr|j r|j ny|jj\}}Wntk r qnX|tkrqnR|tkrO|j|t|_|jjPn|tkrn|j|qnt|jdkr||jkrtd|j|fnt|_|dkr|dkr|jj ||qqn||j!kr|j!|||q||j"kr|j#}|j$j%|}|dk rd|j"|||qB||j'kr|jtd |qB|jt(d |t|_|jjq|j)dk r||j)j!kr|j)j!||j)|q|jt*d |t+}|j,t-t.|j/|j0|j1|qWWn3tk r}|jt(d t2||jt(t3j4||_5nt6k r}|jtd ||_5nt7j8k r1}t9|j:tkrd|j:d|j:df}n |j:}|jt(d|||_5nLt;k r|}|jt(dt2||jt(t3j4||_5nXtj<|x!|j$j=D]}|j>qW|jrat|_|jj|j?dkr|j?j@n|j)dk r |j)jAnx!|jBj=D]}|j@qWz|jCjD|jEjFWd|jCjGXn|jHjdS(Ns!starting thread (server mode): %sls!starting thread (client mode): %ss is Expecting packet from %r, got %dii's$Ignoring message for dead channel %ds&Channel request for unknown channel %dsOops, unhandled type %ds Exception: sEOF in transport threads%s (%d)isSocket exception: sUnknown exception: (IRRaRRRRRRRt write_allRt _check_bannerRRLt MSG_KEXINITRt need_rekeyRt read_messageR R tMSG_DISCONNECTt_parse_disconnectRRt MSG_DEBUGt _parse_debugR?RRR:Rt parse_nextt_handler_tablet_channel_handler_tableRRRcRVRtERRORRtWARNINGR RRtMSG_UNIMPLEMENTEDRtseqnoRFRtRt tb_stringsRtEOFErrorRxR}R8RBt ExceptiontremoveRfRRtsettabortRRR^RRbR_R( R&tptypeRR`RaRARtemsgR((s-..\python\site-packages\paramiko\transport.pytruns  -*                  !   !        cCsi|jjz|jjWd|jjX|jdkrK|jn|j||j j dS(N( RR^RtclearR_RRVRt_parse_kex_initRt start_kex(R&R((s-..\python\site-packages\paramiko\transport.pyt_negotiate_keysHs   c CsxtdD]}|dkr+|j}nd}y|jj|}Wn)tk rr}tdt|nX|d dkrPn|jtd|q W|d dkrtd|d n||_ d }t j |d }|dkr||d }|| }n|j d d}t |dkrAtdn|d }|d}|dkr|dkrtd|fn|jtd||fdS(Nidiis!Error reading SSH protocol bannerisSSH-sBanner: s!Indecipherable protocol version "t"RrRViRqisInvalid SSH banners1.99s2.0s(Incompatible version (%s instead of 2.0)s!Connected (version %s, client %s)(trangeRRtreadlineRuRRtRRRtstringtfindRvR?tINFO( R&tiRtbufRDtcommenttsegstversiontclient((s-..\python\site-packages\paramiko\transport.pyRdUs6       cCs|jjz|jjWd|jjXt|_|jr|jdkrd|j krt |j j }|jd||j _ nt|jjj|j}n |j}t}|jtt|jtjd|j|j |j||j|j|j|j|j|j|j|j|j|j|j|j|jd|jd|j t!|j"dt#||_$|j%|dS(s announce to the other side that we'd like to negotiate keys, and what kind of key negotiation we support. Ns"diffie-hellman-group-exchange-sha1iRri(&RR^RR|R_RRRRRVR1R9RR#RvR>RR=t __contains__R/R RRReRRR tadd_listR+R-R3RRRRRtRRF(R&tpkextavailable_server_keysR((s-..\python\site-packages\paramiko\transport.pyRys<           cCs|jd}|j}|j}|j}|j}|j}|j}|j} |j} |j} |j} |j} |j}|jtdt|dt|dt|dt|dt|dt|dt| d t| d t| d t| d t| |jrft|j j |}nt|j |j }t |d krt dn|j |d ||_|jrt|jjj |j}t|j |}nt|j |j}t |d kr(t dn|d |_|jr_|jdkr_t dn|jrt|jj |}t|jj |}n*t|j |j}t|j |j}t |d kst |d krt dn|d |_|d |_|jtd|j|jf|jrbt|jj |}t|jj |}n*t|j |j}t|j |j}t |d kst |d krt dn|d |_|d |_|jrt|jj | }t|jj | }n*t| j |j}t| j |j}t |d ks]t |d kr|t d|||jfn|d |_|d |_|jtd|d |j|j|j|j|j|j|jftt|j |_!dS(Nis kex algos:s server key:s client encrypt:s server encrypt:s client mac:s server mac:s client compress:s server compress:s client lang:s server lang:s kex follows?is3Incompatible ssh peer (no acceptable kex algorithm)s.Incompatible ssh peer (no acceptable host key)s;Incompatible ssh peer (can't match requested host key type)s/Incompatible ssh server (no acceptable ciphers)s#Ciphers agreed: local=%s, remote=%ss,Incompatible ssh server (no acceptable macs)s<Incompatible ssh server (no acceptable compression) %r %r %rsyusing kex %s; server key type %s; cipher: local %s, remote %s; mac: local %s, remote %s; compression: local %s, remote %s("t get_bytestget_listt get_booleanRRRRtRR>R1RR?RRMRRR=R/RRRVR+RRR-RRR3RRRRet get_so_farR(R&Rtcookiet kex_algo_listtserver_key_algo_listtclient_encrypt_algo_listtserver_encrypt_algo_listtclient_mac_algo_listtserver_mac_algo_listtclient_compress_algo_listtserver_compress_algo_listtclient_lang_listtserver_lang_listt kex_followstunusedt agreed_kexRt agreed_keystagreed_local_cipherstagreed_remote_cipherstagreed_remote_macstagreed_local_macstagreed_remote_compressiontagreed_local_compression((s-..\python\site-packages\paramiko\transport.pyR}s                          $    $   $   c Csx|j|jd}|jrR|jd|}|jd|j|jd}n2|jd|}|jd|j|jd}|j|j||}|j|jd}|j|jd}|jr|jd |j}n|jd |j}|jj ||||||j |j d }|dk rt|j d ksN|j rt|jtd |jj|ndS(sDswitch on newly negotiated encryption parameters for inbound traffics block-sizetAtCskey-sizetBtDRnRltEtFiszlib@openssh.coms$Switching on inbound compression ...N(RGRRRUR_RIRt digest_sizeRtset_inbound_cipherRORRVRRRtset_inbound_compressor( R&t block_sizetIV_intkey_intenginetmac_sizet mac_enginetmac_keyt compress_in((s-..\python\site-packages\paramiko\transport.pyt_activate_inbounds" #  $c Cst}|jtt|j||j|jd}|jr{|jd|}|jd|j|jd}n2|jd|}|jd|j|jd}|j |j||}|j |j d}|j |j d}|jr|jd |j }n|jd |j }|j j||||||j|jd } | dk r|jd ksw|jr|jtd |j j| n|j jst|_n|jtdS(sEswitch on newly negotiated encryption parameters for outbound traffics block-sizeRRskey-sizeRRRnRlRRiszlib@openssh.coms%Switching on outbound compression ...N(R RRt MSG_NEWKEYSRFRGRRRUR_RIRRRtset_outbound_cipherRORRVRRRtset_outbound_compressorRfRRRL( R&RRtIV_outtkey_outRRRRt compress_out((s-..\python\site-packages\paramiko\transport.pyt_activate_outbounds.   #  $ cCst|_|jdkrR|j|jd}|jtd|jj|n|jdkr|j|jd}|jtd|jj |ndS(Nszlib@openssh.comis%Switching on outbound compression ...is$Switching on inbound compression ...( RRRRORRRRRR(R&RR((s-..\python\site-packages\paramiko\transport.pyt _auth_trigger:s cCs|jtd|jd|_|_d|_d|_|jrf|j dkrft ||_ n|j s{t |_ n|j dkr|j jn|jjst|_n|jjz|jjWd|jjXdS(NsSwitch to new keys ...(RRRRVRRRRRRRRRRRwRRfRRRR^RR_(R&R((s-..\python\site-packages\paramiko\transport.pyt_parse_newkeysFs$       cCs6|j}|j}|jtd||fdS(NsDisconnect (code %d): %s(Rt get_stringRR(R&Rtcodetdesc((s-..\python\site-packages\paramiko\transport.pyRi`s  c Cs|j}|jtd||j}|jsR|jtd|t}n|dkr|j}|j}|jj||}|tkr|f}qnU|dkr|j}|j}|jj ||t }n|jj ||}d}t |t kr"|}t }n|r}t}|rZ|jtt|j|n|jtt|j|ndS(NsReceived global request "%s"s*Rejecting "%s" global request from server.s tcpip-forwardscancel-tcpip-forward((RRRRRRRRtcheck_port_forward_requesttcancel_port_forward_requestRtcheck_global_requestR8R:R RRtMSG_REQUEST_SUCCESSRtMSG_REQUEST_FAILURERF( R&RRt want_replytokRRtextraRA((s-..\python\site-packages\paramiko\transport.pyt_parse_global_requestes:              cCs<|jtd||_|jdk r8|jjndS(NsGlobal request successful.(RRRRRVRw(R&R((s-..\python\site-packages\paramiko\transport.pyt_parse_request_successs cCs<|jtdd|_|jdk r8|jjndS(NsGlobal request denied.(RRRVRRRw(R&R((s-..\python\site-packages\paramiko\transport.pyt_parse_request_failures cCs|j}|j}|j}|j}|jj|}|dkrb|jtddS|jjzX|j||||jt d|||j kr|j |j |j |=nWd|jj XdS(Ns%Success for unrequested channel! 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