certmaster/CommonErrors.py

   1 # This program is free software; you can redistribute it and/or modify
   2 # it under the terms of the GNU General Public License as published by
   3 # the Free Software Foundation; either version 2 of the License, or
   4 # (at your option) any later version.
   5 #
   6 # This program is distributed in the hope that it will be useful,
   7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 # GNU Library General Public License for more details.
  10 #
  11 # You should have received a copy of the GNU General Public License
  12 # along with this program; if not, write to the Free Software
  13 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  14 #
  15 # Copyright 2005 Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
  16
  17 from exceptions import Exception
  18
  19 def canIgnoreSSLError(e):
  20     """
  21     Identify common network errors that mean we cannot connect to the server
  22     """
  23
  24     # This is a bit complicated by the fact that different versions of
  25     # M2Crypto & OpenSSL seem to return different error codes for the
  26     # same type of error
  27     s = "%s" % e
  28     if e[0] == 104:     # Connection refused
  29         return True
  30     elif e[0] == 111:   # Connection reset by peer
  31         return True
  32     elif e[0] == 61:    # Connection refused
  33         return True
  34     elif e[0] == 54:    # Connection reset by peer
  35         return True
  36     elif s == "no certificate returned":
  37         return True
  38     elif s == "wrong version number":
  39         return True
  40     elif s == "unexpected eof":
  41         return True
  42
  43     return False
  44
  45
  46 def canIgnoreSocketError(e):
  47     """
  48     Identify common network errors that mean we cannot connect to the server
  49     """
  50
  51     try:
  52         if e[0] == 111:     # Connection refused
  53             return True
  54         elif e[0] == 104:   # Connection reset by peer
  55             return True
  56         elif e[0] == 61:    # Connection refused
  57             return True
  58     except IndexError:
  59         return True
  60
  61     return False
  62
  63 # FIXME: is anything using this?  remove underscores
  64 class CertMaster_Client_Exception(Exception):
  65     def __init__(self, value=None):
  66         Exception.__init__(self)
  67         self.value = value
  68     def __str__(self):
  69         return "%s" %(self.value,)