Source Code for Module paramiko.ssh_exception

  1  # Copyright (C) 2003-2007  Robey Pointer <robeypointer@gmail.com> 
  2  # 
  3  # This file is part of paramiko. 
  4  # 
  5  # Paramiko is free software; you can redistribute it and/or modify it under the 
  6  # terms of the GNU Lesser General Public License as published by the Free 
  7  # Software Foundation; either version 2.1 of the License, or (at your option) 
  8  # any later version. 
  9  # 
 10  # Paramiko is distrubuted in the hope that it will be useful, but WITHOUT ANY 
 11  # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 
 12  # A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more 
 13  # details. 
 14  # 
 15  # You should have received a copy of the GNU Lesser General Public License 
 16  # along with Paramiko; if not, write to the Free Software Foundation, Inc., 
 17  # 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA. 
 18   
 19  """ 
 20  Exceptions defined by paramiko. 
 21  """ 
 22   
 23   
 24 -class SSHException (Exception): 
 25      """ 
 26      Exception raised by failures in SSH2 protocol negotiation or logic errors. 
 27      """ 
 28      pass 
 29   
 30   
 31 -class AuthenticationException (SSHException): 
 32      """ 
 33      Exception raised when authentication failed for some reason.  It may be 
 34      possible to retry with different credentials.  (Other classes specify more 
 35      specific reasons.) 
 36       
 37      @since: 1.6 
 38      """ 
 39      pass 
 40       
 41   
 42 -class PasswordRequiredException (AuthenticationException): 
 43      """ 
 44      Exception raised when a password is needed to unlock a private key file. 
 45      """ 
 46      pass 
 47   
 48   
 49 -class BadAuthenticationType (AuthenticationException): 
 50      """ 
 51      Exception raised when an authentication type (like password) is used, but 
 52      the server isn't allowing that type.  (It may only allow public-key, for 
 53      example.) 
 54       
 55      @ivar allowed_types: list of allowed authentication types provided by the 
 56          server (possible values are: C{"none"}, C{"password"}, and 
 57          C{"publickey"}). 
 58      @type allowed_types: list 
 59       
 60      @since: 1.1 
 61      """ 
 62      allowed_types = [] 
 63       
 64 -    def __init__(self, explanation, types): 
 65          AuthenticationException.__init__(self, explanation) 
 66          self.allowed_types = types 
 67        
 68 -    def __str__(self): 
 69          return SSHException.__str__(self) + ' (allowed_types=%r)' % self.allowed_types 
 70   
 71   
 72 -class PartialAuthentication (AuthenticationException): 
 73      """ 
 74      An internal exception thrown in the case of partial authentication. 
 75      """ 
 76      allowed_types = [] 
 77       
 78 -    def __init__(self, types): 
 79          AuthenticationException.__init__(self, 'partial authentication') 
 80          self.allowed_types = types 
 81   
 82   
 83 -class ChannelException (SSHException): 
 84      """ 
 85      Exception raised when an attempt to open a new L{Channel} fails. 
 86       
 87      @ivar code: the error code returned by the server 
 88      @type code: int 
 89       
 90      @since: 1.6 
 91      """ 
 92 -    def __init__(self, code, text): 
 93          SSHException.__init__(self, text) 
 94          self.code = code 
 95   
 96   
 97 -class BadHostKeyException (SSHException): 
 98      """ 
 99      The host key given by the SSH server did not match what we were expecting. 
100       
101      @ivar hostname: the hostname of the SSH server 
102      @type hostname: str 
103      @ivar key: the host key presented by the server 
104      @type key: L{PKey} 
105      @ivar expected_key: the host key expected 
106      @type expected_key: L{PKey} 
107       
108      @since: 1.6 
109      """ 
110 -    def __init__(self, hostname, got_key, expected_key): 
111          SSHException.__init__(self, 'Host key for server %s does not match!' % hostname) 
112          self.hostname = hostname 
113          self.key = got_key 
114          self.expected_key = expected_key 
115