1 | n/a | # Copyright (C) 2001-2006 Python Software Foundation |
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2 | n/a | # Author: Barry Warsaw |
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3 | n/a | # Contact: email-sig@python.org |
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4 | n/a | |
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5 | n/a | """email package exception classes.""" |
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6 | n/a | |
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7 | n/a | |
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8 | n/a | class MessageError(Exception): |
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9 | n/a | """Base class for errors in the email package.""" |
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10 | n/a | |
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11 | n/a | |
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12 | n/a | class MessageParseError(MessageError): |
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13 | n/a | """Base class for message parsing errors.""" |
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14 | n/a | |
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15 | n/a | |
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16 | n/a | class HeaderParseError(MessageParseError): |
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17 | n/a | """Error while parsing headers.""" |
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18 | n/a | |
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19 | n/a | |
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20 | n/a | class BoundaryError(MessageParseError): |
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21 | n/a | """Couldn't find terminating boundary.""" |
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22 | n/a | |
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23 | n/a | |
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24 | n/a | class MultipartConversionError(MessageError, TypeError): |
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25 | n/a | """Conversion to a multipart is prohibited.""" |
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26 | n/a | |
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27 | n/a | |
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28 | n/a | class CharsetError(MessageError): |
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29 | n/a | """An illegal charset was given.""" |
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30 | n/a | |
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31 | n/a | |
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32 | n/a | # These are parsing defects which the parser was able to work around. |
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33 | n/a | class MessageDefect(ValueError): |
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34 | n/a | """Base class for a message defect.""" |
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35 | n/a | |
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36 | n/a | def __init__(self, line=None): |
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37 | n/a | if line is not None: |
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38 | n/a | super().__init__(line) |
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39 | n/a | self.line = line |
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40 | n/a | |
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41 | n/a | class NoBoundaryInMultipartDefect(MessageDefect): |
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42 | n/a | """A message claimed to be a multipart but had no boundary parameter.""" |
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43 | n/a | |
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44 | n/a | class StartBoundaryNotFoundDefect(MessageDefect): |
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45 | n/a | """The claimed start boundary was never found.""" |
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46 | n/a | |
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47 | n/a | class CloseBoundaryNotFoundDefect(MessageDefect): |
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48 | n/a | """A start boundary was found, but not the corresponding close boundary.""" |
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49 | n/a | |
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50 | n/a | class FirstHeaderLineIsContinuationDefect(MessageDefect): |
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51 | n/a | """A message had a continuation line as its first header line.""" |
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52 | n/a | |
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53 | n/a | class MisplacedEnvelopeHeaderDefect(MessageDefect): |
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54 | n/a | """A 'Unix-from' header was found in the middle of a header block.""" |
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55 | n/a | |
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56 | n/a | class MissingHeaderBodySeparatorDefect(MessageDefect): |
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57 | n/a | """Found line with no leading whitespace and no colon before blank line.""" |
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58 | n/a | # XXX: backward compatibility, just in case (it was never emitted). |
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59 | n/a | MalformedHeaderDefect = MissingHeaderBodySeparatorDefect |
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60 | n/a | |
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61 | n/a | class MultipartInvariantViolationDefect(MessageDefect): |
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62 | n/a | """A message claimed to be a multipart but no subparts were found.""" |
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63 | n/a | |
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64 | n/a | class InvalidMultipartContentTransferEncodingDefect(MessageDefect): |
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65 | n/a | """An invalid content transfer encoding was set on the multipart itself.""" |
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66 | n/a | |
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67 | n/a | class UndecodableBytesDefect(MessageDefect): |
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68 | n/a | """Header contained bytes that could not be decoded""" |
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69 | n/a | |
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70 | n/a | class InvalidBase64PaddingDefect(MessageDefect): |
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71 | n/a | """base64 encoded sequence had an incorrect length""" |
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72 | n/a | |
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73 | n/a | class InvalidBase64CharactersDefect(MessageDefect): |
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74 | n/a | """base64 encoded sequence had characters not in base64 alphabet""" |
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75 | n/a | |
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76 | n/a | # These errors are specific to header parsing. |
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77 | n/a | |
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78 | n/a | class HeaderDefect(MessageDefect): |
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79 | n/a | """Base class for a header defect.""" |
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80 | n/a | |
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81 | n/a | def __init__(self, *args, **kw): |
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82 | n/a | super().__init__(*args, **kw) |
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83 | n/a | |
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84 | n/a | class InvalidHeaderDefect(HeaderDefect): |
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85 | n/a | """Header is not valid, message gives details.""" |
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86 | n/a | |
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87 | n/a | class HeaderMissingRequiredValue(HeaderDefect): |
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88 | n/a | """A header that must have a value had none""" |
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89 | n/a | |
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90 | n/a | class NonPrintableDefect(HeaderDefect): |
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91 | n/a | """ASCII characters outside the ascii-printable range found""" |
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92 | n/a | |
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93 | n/a | def __init__(self, non_printables): |
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94 | n/a | super().__init__(non_printables) |
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95 | n/a | self.non_printables = non_printables |
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96 | n/a | |
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97 | n/a | def __str__(self): |
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98 | n/a | return ("the following ASCII non-printables found in header: " |
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99 | n/a | "{}".format(self.non_printables)) |
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100 | n/a | |
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101 | n/a | class ObsoleteHeaderDefect(HeaderDefect): |
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102 | n/a | """Header uses syntax declared obsolete by RFC 5322""" |
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103 | n/a | |
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104 | n/a | class NonASCIILocalPartDefect(HeaderDefect): |
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105 | n/a | """local_part contains non-ASCII characters""" |
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106 | n/a | # This defect only occurs during unicode parsing, not when |
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107 | n/a | # parsing messages decoded from binary. |
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