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| # Copyright (C) 2001-2006 Python Software Foundation | |
| # Author: Barry Warsaw | |
| # Contact: [email protected] | |
| """email package exception classes.""" | |
| class MessageError(Exception): | |
| """Base class for errors in the email package.""" | |
| class MessageParseError(MessageError): | |
| """Base class for message parsing errors.""" | |
| class HeaderParseError(MessageParseError): | |
| """Error while parsing headers.""" | |
| class BoundaryError(MessageParseError): | |
| """Couldn't find terminating boundary.""" | |
| class MultipartConversionError(MessageError, TypeError): | |
| """Conversion to a multipart is prohibited.""" | |
| class CharsetError(MessageError): | |
| """An illegal charset was given.""" | |
| # These are parsing defects which the parser was able to work around. | |
| class MessageDefect(ValueError): | |
| """Base class for a message defect.""" | |
| def __init__(self, line=None): | |
| if line is not None: | |
| super().__init__(line) | |
| self.line = line | |
| class NoBoundaryInMultipartDefect(MessageDefect): | |
| """A message claimed to be a multipart but had no boundary parameter.""" | |
| class StartBoundaryNotFoundDefect(MessageDefect): | |
| """The claimed start boundary was never found.""" | |
| class CloseBoundaryNotFoundDefect(MessageDefect): | |
| """A start boundary was found, but not the corresponding close boundary.""" | |
| class FirstHeaderLineIsContinuationDefect(MessageDefect): | |
| """A message had a continuation line as its first header line.""" | |
| class MisplacedEnvelopeHeaderDefect(MessageDefect): | |
| """A 'Unix-from' header was found in the middle of a header block.""" | |
| class MissingHeaderBodySeparatorDefect(MessageDefect): | |
| """Found line with no leading whitespace and no colon before blank line.""" | |
| # XXX: backward compatibility, just in case (it was never emitted). | |
| MalformedHeaderDefect = MissingHeaderBodySeparatorDefect | |
| class MultipartInvariantViolationDefect(MessageDefect): | |
| """A message claimed to be a multipart but no subparts were found.""" | |
| class InvalidMultipartContentTransferEncodingDefect(MessageDefect): | |
| """An invalid content transfer encoding was set on the multipart itself.""" | |
| class UndecodableBytesDefect(MessageDefect): | |
| """Header contained bytes that could not be decoded""" | |
| class InvalidBase64PaddingDefect(MessageDefect): | |
| """base64 encoded sequence had an incorrect length""" | |
| class InvalidBase64CharactersDefect(MessageDefect): | |
| """base64 encoded sequence had characters not in base64 alphabet""" | |
| class InvalidBase64LengthDefect(MessageDefect): | |
| """base64 encoded sequence had invalid length (1 mod 4)""" | |
| # These errors are specific to header parsing. | |
| class HeaderDefect(MessageDefect): | |
| """Base class for a header defect.""" | |
| def __init__(self, *args, **kw): | |
| super().__init__(*args, **kw) | |
| class InvalidHeaderDefect(HeaderDefect): | |
| """Header is not valid, message gives details.""" | |
| class HeaderMissingRequiredValue(HeaderDefect): | |
| """A header that must have a value had none""" | |
| class NonPrintableDefect(HeaderDefect): | |
| """ASCII characters outside the ascii-printable range found""" | |
| def __init__(self, non_printables): | |
| super().__init__(non_printables) | |
| self.non_printables = non_printables | |
| def __str__(self): | |
| return ("the following ASCII non-printables found in header: " | |
| "{}".format(self.non_printables)) | |
| class ObsoleteHeaderDefect(HeaderDefect): | |
| """Header uses syntax declared obsolete by RFC 5322""" | |
| class NonASCIILocalPartDefect(HeaderDefect): | |
| """local_part contains non-ASCII characters""" | |
| # This defect only occurs during unicode parsing, not when | |
| # parsing messages decoded from binary. | |
| class InvalidDateDefect(HeaderDefect): | |
| """Header has unparsable or invalid date""" | |