122 lines
3.4 KiB
Python
122 lines
3.4 KiB
Python
#!/usr/bin/python
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"""
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Scyther : An automatic verifier for security protocols.
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Copyright (C) 2007 Cas Cremers
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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"""
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#
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# Scyther interface error classes
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#
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#---------------------------------------------------------------------------
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class Error(Exception):
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"""Base class for exceptions in this module."""
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pass
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class ScytherError(Error):
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"""Exception raised for errors generated by the backend
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Attributes:
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errorlist -- list of error lines are retrieved from the
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backend
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"""
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def __init__(self, errorlist,filenames=None,options=None):
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self.errorlist = errorlist
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self.filenames = filenames
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self.options = options
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def __str__(self):
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s = "Scyther backend reported errors"
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if len(self.filenames) == 0:
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s = s + " for unknown files."
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if len(self.filenames) == 1:
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s = s + " for file %s" % (self.filenames)
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if len(self.filenames) > 1:
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s = s + " for files %s" % (self.filenames)
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s = s + "\n"
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s = s + "Options: '%s'\n\n" % (self.options)
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S = s + "Error details:\n"
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s = s + "\n".join(self.errorlist)
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return s
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class InputError(Error):
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"""Exception raised for errors in the input.
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Attributes:
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expression -- input expression in which the error occurred
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message -- explanation of the error
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"""
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def __init__(self, expression, message):
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self.expression = expression
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self.message = message
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class BinaryError(Error):
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"""Raised when the Scyther executable is not found.
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Attributes:
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file -- file location at which we should have been able to find it.
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"""
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def __init__(self, file):
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self.file = file
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def __str__(self):
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return "Could not find Scyther executable at '%s'" % (self.file)
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class NoBinaryError(Error):
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"""Raised when the Scyther executable is not defined.
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Attributes:
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None.
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"""
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def __str__(self):
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return "Scyther class attribute 'program' was not defined."
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class UnknownPlatformError(Error):
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"""Raised when the platform is not supported yet.
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Attributes:
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platform -- string describing the platform.
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"""
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def __init__(self, platform):
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self.platform = platform
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def __str__(self):
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return "The %s platform is currently unsupported." % self.platform
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class StringListError(Error):
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"""Raised when the a string should be a list of strings or a string
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Attributes:
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obj -- object that did not fit
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"""
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def __init__(self, obj):
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self.obj = obj
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def __str__(self):
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return "Got '%s', which is type '%s' instead of a (list of) string." % (self.obj, type(self.obj))
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# vim: set ts=4 sw=4 et list lcs=tab\:>-:
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