Python Message.add_int方法代码示例

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def send(self, s):
        """
        Send data to the channel.  Returns the number of bytes sent, or 0 if
        the channel stream is closed.  Applications are responsible for
        checking that all data has been sent: if only some of the data was
        transmitted, the application needs to attempt delivery of the remaining
        data.

        @param s: data to send
        @type s: str
        @return: number of bytes actually sent
        @rtype: int

        @raise socket.timeout: if no data could be sent before the timeout set
            by L{settimeout}.
        """
        size = len(s)
        self.lock.acquire()
        try:
            size = self._wait_for_send_window(size)
            if size == 0:
                # eof or similar
                return 0
            m = Message()
            m.add_byte(chr(MSG_CHANNEL_DATA))
            m.add_int(self.remote_chanid)
            m.add_string(s[:size])
        finally:
            self.lock.release()
        # Note: We release self.lock before calling _send_user_message.
        # Otherwise, we can deadlock during re-keying.
        self.transport._send_user_message(m)
        return size

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def exec_command(self, command):
        """
        Execute a command on the server.  If the server allows it, the channel
        will then be directly connected to the stdin, stdout, and stderr of
        the command being executed.
        
        When the command finishes executing, the channel will be closed and
        can't be reused.  You must open a new channel if you wish to execute
        another command.

        @param command: a shell command to execute.
        @type command: str

        @raise SSHException: if the request was rejected or the channel was
            closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
            raise SSHException('Channel is not open')
        m = Message()
        m.add_byte(chr(MSG_CHANNEL_REQUEST))
        m.add_int(self.remote_chanid)
        m.add_string('exec')
        m.add_boolean(True)
        m.add_string(command)
        self._event_pending()
        self.transport._send_user_message(m)
        self._wait_for_event()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def invoke_subsystem(self, subsystem):
        """
        Request a subsystem on the server (for example, C{sftp}).  If the
        server allows it, the channel will then be directly connected to the
        requested subsystem.
        
        When the subsystem finishes, the channel will be closed and can't be
        reused.

        @param subsystem: name of the subsystem being requested.
        @type subsystem: str

        @raise SSHException: if the request was rejected or the channel was
            closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
            raise SSHException('Channel is not open')
        m = Message()
        m.add_byte(chr(MSG_CHANNEL_REQUEST))
        m.add_int(self.remote_chanid)
        m.add_string('subsystem')
        m.add_boolean(True)
        m.add_string(subsystem)
        self._event_pending()
        self.transport._send_user_message(m)
        self._wait_for_event()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def recv_stderr(self, nbytes):
        """
        Receive data from the channel's stderr stream.  Only channels using
        L{exec_command} or L{invoke_shell} without a pty will ever have data
        on the stderr stream.  The return value is a string representing the
        data received.  The maximum amount of data to be received at once is
        specified by C{nbytes}.  If a string of length zero is returned, the
        channel stream has closed.

        @param nbytes: maximum number of bytes to read.
        @type nbytes: int
        @return: data.
        @rtype: str
        
        @raise socket.timeout: if no data is ready before the timeout set by
            L{settimeout}.
        
        @since: 1.1
        """
        try:
            out = self.in_stderr_buffer.read(nbytes, self.timeout)
        except PipeTimeout as e:
            raise socket.timeout()
            
        ack = self._check_add_window(len(out))
        # no need to hold the channel lock when sending this
        if ack > 0:
            m = Message()
            m.add_byte(chr(MSG_CHANNEL_WINDOW_ADJUST))
            m.add_int(self.remote_chanid)
            m.add_int(ack)
            self.transport._send_user_message(m)

        return out

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def invoke_shell(self):
     """
     Request an interactive shell session on this channel.  If the server
     allows it, the channel will then be directly connected to the stdin,
     stdout, and stderr of the shell.
     
     Normally you would call L{get_pty} before this, in which case the
     shell will operate through the pty, and the channel will be connected
     to the stdin and stdout of the pty.
     
     When the shell exits, the channel will be closed and can't be reused.
     You must open a new channel if you wish to open another shell.
     
     @raise SSHException: if the request was rejected or the channel was
         closed
     """
     if self.closed or self.eof_received or self.eof_sent or not self.active:
         raise SSHException('Channel is not open')
     m = Message()
     m.add_byte(chr(MSG_CHANNEL_REQUEST))
     m.add_int(self.remote_chanid)
     m.add_string('shell')
     m.add_boolean(1)
     self._event_pending()
     self.transport._send_user_message(m)
     self._wait_for_event()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _disconnect_service_not_available(self):
     m = Message()
     m.add_byte(chr(MSG_DISCONNECT))
     m.add_int(DISCONNECT_SERVICE_NOT_AVAILABLE)
     m.add_string('Service not available')
     m.add_string('en')
     self.transport._send_message(m)
     self.transport.close()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _disconnect_no_more_auth(self):
     m = Message()
     m.add_byte(chr(MSG_DISCONNECT))
     m.add_int(DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE)
     m.add_string('No more auth methods available')
     m.add_string('en')
     self.transport._send_message(m)
     self.transport.close()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _negotiate_keys_wrapper(self, m):
     if self.local_kex_init is None: # Remote side sent KEXINIT
         # Simulate in-transit MSG_CHANNEL_WINDOW_ADJUST by sending it
         # before responding to the incoming MSG_KEXINIT.
         m2 = Message()
         m2.add_byte(chr(MSG_CHANNEL_WINDOW_ADJUST))
         m2.add_int(chan.remote_chanid)
         m2.add_int(1)    # bytes to add
         self._send_message(m2)
     return _negotiate_keys(self, m)

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _send_eof(self):
     # you are holding the lock.
     if self.eof_sent:
         return None
     m = Message()
     m.add_byte(chr(MSG_CHANNEL_EOF))
     m.add_int(self.remote_chanid)
     self.eof_sent = True
     self._log(DEBUG, 'EOF sent (%s)', self._name)
     return m

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def sign_ssh_data(self, rng, data):
     msg = Message()
     msg.add_byte(chr(SSH2_AGENTC_SIGN_REQUEST))
     msg.add_string(self.blob)
     msg.add_string(data)
     msg.add_int(0)
     ptype, result = self.agent._send_message(msg)
     if ptype != SSH2_AGENT_SIGN_RESPONSE:
         raise SSHException('key cannot be used for signing')
     return result.get_string()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _close_internal(self):
     # you are holding the lock.
     if not self.active or self.closed:
         return None, None
     m1 = self._send_eof()
     m2 = Message()
     m2.add_byte(chr(MSG_CHANNEL_CLOSE))
     m2.add_int(self.remote_chanid)
     self._set_closed()
     # can't unlink from the Transport yet -- the remote side may still
     # try to send meta-data (exit-status, etc)
     return m1, m2

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _interactive_query(self, q):
     # make interactive query instead of response
     m = Message()
     m.add_byte(chr(MSG_USERAUTH_INFO_REQUEST))
     m.add_string(q.name)
     m.add_string(q.instructions)
     m.add_string('')
     m.add_int(len(q.prompts))
     for p in q.prompts:
         m.add_string(p[0])
         m.add_boolean(p[1])
     self.transport._send_message(m)

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def resize_pty(self, width=80, height=24):
        """
        Resize the pseudo-terminal.  This can be used to change the width and
        height of the terminal emulation created in a previous L{get_pty} call.

        @param width: new width (in characters) of the terminal screen
        @type width: int
        @param height: new height (in characters) of the terminal screen
        @type height: int

        @raise SSHException: if the request was rejected or the channel was
            closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
            raise SSHException('Channel is not open')
        m = Message()
        m.add_byte(chr(MSG_CHANNEL_REQUEST))
        m.add_int(self.remote_chanid)
        m.add_string('window-change')
        m.add_boolean(True)
        m.add_int(width)
        m.add_int(height)
        m.add_int(0).add_int(0)
        self._event_pending()
        self.transport._send_user_message(m)
        self._wait_for_event()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
    def get_pty(self, term='vt100', width=80, height=24):
        """
        Request a pseudo-terminal from the server.  This is usually used right
        after creating a client channel, to ask the server to provide some
        basic terminal semantics for a shell invoked with L{invoke_shell}.
        It isn't necessary (or desirable) to call this method if you're going
        to exectue a single command with L{exec_command}.

        @param term: the terminal type to emulate (for example, C{'vt100'})
        @type term: str
        @param width: width (in characters) of the terminal screen
        @type width: int
        @param height: height (in characters) of the terminal screen
        @type height: int
        
        @raise SSHException: if the request was rejected or the channel was
            closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
            raise SSHException('Channel is not open')
        m = Message()
        m.add_byte(chr(MSG_CHANNEL_REQUEST))
        m.add_int(self.remote_chanid)
        m.add_string('pty-req')
        m.add_boolean(True)
        m.add_string(term)
        m.add_int(width)
        m.add_int(height)
        # pixel height, width (usually useless)
        m.add_int(0).add_int(0)
        m.add_string('')
        self._event_pending()
        self.transport._send_user_message(m)
        self._wait_for_event()

# 需要导入模块: from ssh.message import Message [as 别名]
# 或者: from ssh.message.Message import add_int [as 别名]
 def _send_server_version(self):
     # winscp will freak out if the server sends version info before the
     # client finishes sending INIT.
     t, data = self._read_packet()
     if t != CMD_INIT:
         raise SFTPError('Incompatible sftp protocol')
     version = struct.unpack('>I', data[:4])[0]
     # advertise that we support "check-file"
     extension_pairs = [ 'check-file', 'md5,sha1' ]
     msg = Message()
     msg.add_int(_VERSION)
     msg.add(*extension_pairs)
     self._send_packet(CMD_VERSION, str(msg))
     return version