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L{ServerInterface} is an interface to override for server support.
iN( t *( t utilt InteractiveQueryc B s) e Z d Z d d d Z e d Z RS( sP
A query (set of prompts) for a user during interactive authentication.
t c G s| | | _ | | _ g | _ xZ | D]R } t | t k sL t | t k r\ | j | q" | j | d | d q" Wd S( s
Create a new interactive query to send to the client. The name and
instructions are optional, but are generally displayed to the end
user. A list of prompts may be included, or they may be added via
the L{add_prompt} method.
@param name: name of this query
@type name: str
@param instructions: user instructions (usually short) about this query
@type instructions: str
@param prompts: one or more authentication prompts
@type prompts: str
i i N( t namet instructionst promptst typet strt unicodet
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Add a prompt to this query. The prompt should be a (reasonably short)
string. Multiple prompts can be added to the same query.
@param prompt: the user prompt
@type prompt: str
@param echo: C{True} (default) if the user's response should be echoed;
C{False} if not (for a password or similar)
@type echo: bool
N( R t append( R t promptt echo( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyR
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This class defines an interface for controlling the behavior of paramiko
in server mode.
Methods on this class are called from paramiko's primary thread, so you
shouldn't do too much work in them. (Certainly nothing that blocks or
sleeps.)
c C s t S( s%
Determine if a channel request of a given type will be granted, and
return C{OPEN_SUCCEEDED} or an error code. This method is
called in server mode when the client requests a channel, after
authentication is complete.
If you allow channel requests (and an ssh server that didn't would be
useless), you should also override some of the channel request methods
below, which are used to determine which services will be allowed on
a given channel:
- L{check_channel_pty_request}
- L{check_channel_shell_request}
- L{check_channel_subsystem_request}
- L{check_channel_window_change_request}
- L{check_channel_x11_request}
The C{chanid} parameter is a small number that uniquely identifies the
channel within a L{Transport}. A L{Channel} object is not created
unless this method returns C{OPEN_SUCCEEDED} -- once a
L{Channel} object is created, you can call L{Channel.get_id} to
retrieve the channel ID.
The return value should either be C{OPEN_SUCCEEDED} (or
C{0}) to allow the channel request, or one of the following error
codes to reject it:
- C{OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED}
- C{OPEN_FAILED_CONNECT_FAILED}
- C{OPEN_FAILED_UNKNOWN_CHANNEL_TYPE}
- C{OPEN_FAILED_RESOURCE_SHORTAGE}
The default implementation always returns
C{OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED}.
@param kind: the kind of channel the client would like to open
(usually C{"session"}).
@type kind: str
@param chanid: ID of the channel
@type chanid: int
@return: a success or failure code (listed above)
@rtype: int
( t' OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED( R t kindt chanid( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_requestP s *c C s d S( s
Return a list of authentication methods supported by the server.
This list is sent to clients attempting to authenticate, to inform them
of authentication methods that might be successful.
The "list" is actually a string of comma-separated names of types of
authentication. Possible values are C{"password"}, C{"publickey"},
and C{"none"}.
The default implementation always returns C{"password"}.
@param username: the username requesting authentication.
@type username: str
@return: a comma-separated list of authentication types
@rtype: str
t password( ( R t username( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt get_allowed_auths| s c C s t S( s
Determine if a client may open channels with no (further)
authentication.
Return L{AUTH_FAILED} if the client must authenticate, or
L{AUTH_SUCCESSFUL} if it's okay for the client to not
authenticate.
The default implementation always returns L{AUTH_FAILED}.
@param username: the username of the client.
@type username: str
@return: L{AUTH_FAILED} if the authentication fails;
L{AUTH_SUCCESSFUL} if it succeeds.
@rtype: int
( t AUTH_FAILED( R R ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_auth_none s c C s t S( s\
Determine if a given username and password supplied by the client is
acceptable for use in authentication.
Return L{AUTH_FAILED} if the password is not accepted,
L{AUTH_SUCCESSFUL} if the password is accepted and completes
the authentication, or L{AUTH_PARTIALLY_SUCCESSFUL} if your
authentication is stateful, and this key is accepted for
authentication, but more authentication is required. (In this latter
case, L{get_allowed_auths} will be called to report to the client what
options it has for continuing the authentication.)
The default implementation always returns L{AUTH_FAILED}.
@param username: the username of the authenticating client.
@type username: str
@param password: the password given by the client.
@type password: str
@return: L{AUTH_FAILED} if the authentication fails;
L{AUTH_SUCCESSFUL} if it succeeds;
L{AUTH_PARTIALLY_SUCCESSFUL} if the password auth is
successful, but authentication must continue.
@rtype: int
( R ( R R R ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_auth_password s c C s t S( s
Determine if a given key supplied by the client is acceptable for use
in authentication. You should override this method in server mode to
check the username and key and decide if you would accept a signature
made using this key.
Return L{AUTH_FAILED} if the key is not accepted,
L{AUTH_SUCCESSFUL} if the key is accepted and completes the
authentication, or L{AUTH_PARTIALLY_SUCCESSFUL} if your
authentication is stateful, and this password is accepted for
authentication, but more authentication is required. (In this latter
case, L{get_allowed_auths} will be called to report to the client what
options it has for continuing the authentication.)
Note that you don't have to actually verify any key signtature here.
If you're willing to accept the key, paramiko will do the work of
verifying the client's signature.
The default implementation always returns L{AUTH_FAILED}.
@param username: the username of the authenticating client
@type username: str
@param key: the key object provided by the client
@type key: L{PKey <pkey.PKey>}
@return: L{AUTH_FAILED} if the client can't authenticate
with this key; L{AUTH_SUCCESSFUL} if it can;
L{AUTH_PARTIALLY_SUCCESSFUL} if it can authenticate with
this key but must continue with authentication
@rtype: int
( R ( R R t key( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_auth_publickey s c C s t S( s6
Begin an interactive authentication challenge, if supported. You
should override this method in server mode if you want to support the
C{"keyboard-interactive"} auth type, which requires you to send a
series of questions for the client to answer.
Return L{AUTH_FAILED} if this auth method isn't supported. Otherwise,
you should return an L{InteractiveQuery} object containing the prompts
and instructions for the user. The response will be sent via a call
to L{check_auth_interactive_response}.
The default implementation always returns L{AUTH_FAILED}.
@param username: the username of the authenticating client
@type username: str
@param submethods: a comma-separated list of methods preferred by the
client (usually empty)
@type submethods: str
@return: L{AUTH_FAILED} if this auth method isn't supported; otherwise
an object containing queries for the user
@rtype: int or L{InteractiveQuery}
( R ( R R t
submethods( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_auth_interactive s c C s t S( s
Continue or finish an interactive authentication challenge, if
supported. You should override this method in server mode if you want
to support the C{"keyboard-interactive"} auth type.
Return L{AUTH_FAILED} if the responses are not accepted,
L{AUTH_SUCCESSFUL} if the responses are accepted and complete
the authentication, or L{AUTH_PARTIALLY_SUCCESSFUL} if your
authentication is stateful, and this set of responses is accepted for
authentication, but more authentication is required. (In this latter
case, L{get_allowed_auths} will be called to report to the client what
options it has for continuing the authentication.)
If you wish to continue interactive authentication with more questions,
you may return an L{InteractiveQuery} object, which should cause the
client to respond with more answers, calling this method again. This
cycle can continue indefinitely.
The default implementation always returns L{AUTH_FAILED}.
@param responses: list of responses from the client
@type responses: list(str)
@return: L{AUTH_FAILED} if the authentication fails;
L{AUTH_SUCCESSFUL} if it succeeds;
L{AUTH_PARTIALLY_SUCCESSFUL} if the interactive auth is
successful, but authentication must continue; otherwise an object
containing queries for the user
@rtype: int or L{InteractiveQuery}
( R ( R t responses( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_auth_interactive_response s c C s t S( sh
Handle a request for port forwarding. The client is asking that
connections to the given address and port be forwarded back across
this ssh connection. An address of C{"0.0.0.0"} indicates a global
address (any address associated with this server) and a port of C{0}
indicates that no specific port is requested (usually the OS will pick
a port).
The default implementation always returns C{False}, rejecting the
port forwarding request. If the request is accepted, you should return
the port opened for listening.
@param address: the requested address
@type address: str
@param port: the requested port
@type port: int
@return: the port number that was opened for listening, or C{False} to
reject
@rtype: int
( t False( R t addresst port( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_port_forward_request s c C s d S( s_
The client would like to cancel a previous port-forwarding request.
If the given address and port is being forwarded across this ssh
connection, the port should be closed.
@param address: the forwarded address
@type address: str
@param port: the forwarded port
@type port: int
N( ( R R' R( ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt cancel_port_forward_request. s c C s t S( s
Handle a global request of the given C{kind}. This method is called
in server mode and client mode, whenever the remote host makes a global
request. If there are any arguments to the request, they will be in
C{msg}.
There aren't any useful global requests defined, aside from port
forwarding, so usually this type of request is an extension to the
protocol.
If the request was successful and you would like to return contextual
data to the remote host, return a tuple. Items in the tuple will be
sent back with the successful result. (Note that the items in the
tuple can only be strings, ints, longs, or bools.)
The default implementation always returns C{False}, indicating that it
does not support any global requests.
@note: Port forwarding requests are handled separately, in
L{check_port_forward_request}.
@param kind: the kind of global request being made.
@type kind: str
@param msg: any extra arguments to the request.
@type msg: L{Message}
@return: C{True} or a tuple of data if the request was granted;
C{False} otherwise.
@rtype: bool
( R& ( R R t msg( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_global_request; s c C s t S( s
Determine if a pseudo-terminal of the given dimensions (usually
requested for shell access) can be provided on the given channel.
The default implementation always returns C{False}.
@param channel: the L{Channel} the pty request arrived on.
@type channel: L{Channel}
@param term: type of terminal requested (for example, C{"vt100"}).
@type term: str
@param width: width of screen in characters.
@type width: int
@param height: height of screen in characters.
@type height: int
@param pixelwidth: width of screen in pixels, if known (may be C{0} if
unknown).
@type pixelwidth: int
@param pixelheight: height of screen in pixels, if known (may be C{0}
if unknown).
@type pixelheight: int
@return: C{True} if the psuedo-terminal has been allocated; C{False}
otherwise.
@rtype: bool
( R& ( R t channelt termt widtht heightt
pixelwidtht pixelheightt modes( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_pty_request_ s c C s t S( s0
Determine if a shell will be provided to the client on the given
channel. If this method returns C{True}, the channel should be
connected to the stdin/stdout of a shell (or something that acts like
a shell).
The default implementation always returns C{False}.
@param channel: the L{Channel} the request arrived on.
@type channel: L{Channel}
@return: C{True} if this channel is now hooked up to a shell; C{False}
if a shell can't or won't be provided.
@rtype: bool
( R& ( R R- ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_shell_request{ s c C s t S( s
Determine if a shell command will be executed for the client. If this
method returns C{True}, the channel should be connected to the stdin,
stdout, and stderr of the shell command.
The default implementation always returns C{False}.
@param channel: the L{Channel} the request arrived on.
@type channel: L{Channel}
@param command: the command to execute.
@type command: str
@return: C{True} if this channel is now hooked up to the stdin,
stdout, and stderr of the executing command; C{False} if the
command will not be executed.
@rtype: bool
@since: 1.1
( R& ( R R- t command( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_exec_request s c C sT | j j | \ } } } | d k r. t S| | | | | | } | j t S( s4
Determine if a requested subsystem will be provided to the client on
the given channel. If this method returns C{True}, all future I/O
through this channel will be assumed to be connected to the requested
subsystem. An example of a subsystem is C{sftp}.
The default implementation checks for a subsystem handler assigned via
L{Transport.set_subsystem_handler}.
If one has been set, the handler is invoked and this method returns
C{True}. Otherwise it returns C{False}.
@note: Because the default implementation uses the L{Transport} to
identify valid subsystems, you probably won't need to override this
method.
@param channel: the L{Channel} the pty request arrived on.
@type channel: L{Channel}
@param name: name of the requested subsystem.
@type name: str
@return: C{True} if this channel is now hooked up to the requested
subsystem; C{False} if that subsystem can't or won't be provided.
@rtype: bool
N( t
get_transportt _get_subsystem_handlert NoneR& t startR ( R R- R t
handler_classt largt kwargt handler( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_subsystem_request s
c C s t S( sE
Determine if the pseudo-terminal on the given channel can be resized.
This only makes sense if a pty was previously allocated on it.
The default implementation always returns C{False}.
@param channel: the L{Channel} the pty request arrived on.
@type channel: L{Channel}
@param width: width of screen in characters.
@type width: int
@param height: height of screen in characters.
@type height: int
@param pixelwidth: width of screen in pixels, if known (may be C{0} if
unknown).
@type pixelwidth: int
@param pixelheight: height of screen in pixels, if known (may be C{0}
if unknown).
@type pixelheight: int
@return: C{True} if the terminal was resized; C{False} if not.
@rtype: bool
( R& ( R R- R/ R0 R1 R2 ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt# check_channel_window_change_request s c C s t S( s
Determine if the client will be provided with an X11 session. If this
method returns C{True}, X11 applications should be routed through new
SSH channels, using L{Transport.open_x11_channel}.
The default implementation always returns C{False}.
@param channel: the L{Channel} the X11 request arrived on
@type channel: L{Channel}
@param single_connection: C{True} if only a single X11 channel should
be opened
@type single_connection: bool
@param auth_protocol: the protocol used for X11 authentication
@type auth_protocol: str
@param auth_cookie: the cookie used to authenticate to X11
@type auth_cookie: str
@param screen_number: the number of the X11 screen to connect to
@type screen_number: int
@return: C{True} if the X11 session was opened; C{False} if not
@rtype: bool
( R& ( R R- t single_connectiont
auth_protocolt auth_cookiet
screen_number( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt check_channel_x11_request s c C s t S( s|
Determine if a local port forwarding channel will be granted, and
return C{OPEN_SUCCEEDED} or an error code. This method is
called in server mode when the client requests a channel, after
authentication is complete.
The C{chanid} parameter is a small number that uniquely identifies the
channel within a L{Transport}. A L{Channel} object is not created
unless this method returns C{OPEN_SUCCEEDED} -- once a
L{Channel} object is created, you can call L{Channel.get_id} to
retrieve the channel ID.
The origin and destination parameters are (ip_address, port) tuples
that correspond to both ends of the TCP connection in the forwarding
tunnel.
The return value should either be C{OPEN_SUCCEEDED} (or
C{0}) to allow the channel request, or one of the following error
codes to reject it:
- C{OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED}
- C{OPEN_FAILED_CONNECT_FAILED}
- C{OPEN_FAILED_UNKNOWN_CHANNEL_TYPE}
- C{OPEN_FAILED_RESOURCE_SHORTAGE}
The default implementation always returns
C{OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED}.
@param chanid: ID of the channel
@type chanid: int
@param origin: 2-tuple containing the IP address and port of the
originator (client side)
@type origin: tuple
@param destination: 2-tuple containing the IP address and port of the
destination (server side)
@type destination: tuple
@return: a success or failure code (listed above)
@rtype: int
( R ( R R t origint destination( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyt" check_channel_direct_tcpip_request s '( R R R R R R R R! R# R% R) R* R, R4 R5 R7 R@ RA RF RI ( ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyR F s$ , !
$ t SubsystemHandlerc B s; e Z d Z d Z d Z d Z d Z d Z RS( s
Handler for a subsytem in server mode. If you create a subclass of this
class and pass it to
L{Transport.set_subsystem_handler},
an object of this
class will be created for each request for this subsystem. Each new object
will be executed within its own new thread by calling L{start_subsystem}.
When that method completes, the channel is closed.
For example, if you made a subclass C{MP3Handler} and registered it as the
handler for subsystem C{"mp3"}, then whenever a client has successfully
authenticated and requests subsytem C{"mp3"}, an object of class
C{MP3Handler} will be created, and L{start_subsystem} will be called on
it from a new thread.
c C sG t j j | d | j | | _ | j | _ | | _ | | _ d S( s
Create a new handler for a channel. This is used by L{ServerInterface}
to start up a new handler when a channel requests this subsystem. You
don't need to override this method, but if you do, be sure to pass the
C{channel} and C{name} parameters through to the original C{__init__}
method here.
@param channel: the channel associated with this subsystem request.
@type channel: L{Channel}
@param name: name of the requested subsystem.
@type name: str
@param server: the server object for the session that started this
subsystem
@type server: L{ServerInterface}
t targetN( t threadingt ThreadR
t _runt _SubsystemHandler__channelR8 t _SubsystemHandler__transportt _SubsystemHandler__namet _SubsystemHandler__server( R R- R t server( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyR
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Return the L{ServerInterface} object associated with this channel and
subsystem.
@rtype: L{ServerInterface}
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get_server@ s c C s y: | j j t d | j | j | j | j | j WnR t k
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n Xy | j Wn n Xd S( Ns! Starting handler for subsystem %ss+ Exception in subsystem handler for "%s": %s( RP t _logt DEBUGRQ t start_subsystemRO t Exceptiont ERRORR R t
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Process an ssh subsystem in server mode. This method is called on a
new object (and in a new thread) for each subsystem request. It is
assumed that all subsystem logic will take place here, and when the
subsystem is finished, this method will return. After this method
returns, the channel is closed.
The combination of C{transport} and C{channel} are unique; this handler
corresponds to exactly one L{Channel} on one L{Transport}.
@note: It is the responsibility of this method to exit if the
underlying L{Transport} is closed. This can be done by checking
L{Transport.is_active} or noticing an EOF
on the L{Channel}. If this method loops forever without checking
for this case, your python interpreter may refuse to exit because
this thread will still be running.
@param name: name of the requested subsystem.
@type name: str
@param transport: the server-mode L{Transport}.
@type transport: L{Transport}
@param channel: the channel associated with this subsystem request.
@type channel: L{Channel}
N( ( R R t transportR- ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyRW V s c C s | j j d S( s
Perform any cleanup at the end of a subsystem. The default
implementation just closes the channel.
@since: 1.1
N( RO t close( R ( ( s[ C:\Program Files (x86)\MySQL\MySQL Workbench 6.1 CE/python/site-packages\paramiko\server.pyR[ q s ( R R R R
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