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109 lines
2.6 KiB
Python
109 lines
2.6 KiB
Python
5 years ago
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"""Low-level http related exceptions."""
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from typing import Optional, Union
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from .typedefs import _CIMultiDict
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__all__ = ('HttpProcessingError',)
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class HttpProcessingError(Exception):
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"""HTTP error.
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Shortcut for raising HTTP errors with custom code, message and headers.
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code: HTTP Error code.
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message: (optional) Error message.
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headers: (optional) Headers to be sent in response, a list of pairs
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"""
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code = 0
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message = ''
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headers = None
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def __init__(self, *,
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code: Optional[int]=None,
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message: str='',
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headers: Optional[_CIMultiDict]=None) -> None:
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if code is not None:
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self.code = code
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self.headers = headers
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self.message = message
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def __str__(self) -> str:
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return "%s, message=%r" % (self.code, self.message)
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def __repr__(self) -> str:
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return "<%s: %s>" % (self.__class__.__name__, self)
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class BadHttpMessage(HttpProcessingError):
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code = 400
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message = 'Bad Request'
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def __init__(self, message: str, *,
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headers: Optional[_CIMultiDict]=None) -> None:
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super().__init__(message=message, headers=headers)
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self.args = (message,)
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class HttpBadRequest(BadHttpMessage):
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code = 400
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message = 'Bad Request'
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class PayloadEncodingError(BadHttpMessage):
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"""Base class for payload errors"""
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class ContentEncodingError(PayloadEncodingError):
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"""Content encoding error."""
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class TransferEncodingError(PayloadEncodingError):
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"""transfer encoding error."""
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class ContentLengthError(PayloadEncodingError):
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"""Not enough data for satisfy content length header."""
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class LineTooLong(BadHttpMessage):
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def __init__(self, line: str,
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limit: str='Unknown',
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actual_size: str='Unknown') -> None:
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super().__init__(
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"Got more than %s bytes (%s) when reading %s." % (
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limit, actual_size, line))
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self.args = (line, limit, actual_size)
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class InvalidHeader(BadHttpMessage):
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def __init__(self, hdr: Union[bytes, str]) -> None:
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if isinstance(hdr, bytes):
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hdr = hdr.decode('utf-8', 'surrogateescape')
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super().__init__('Invalid HTTP Header: {}'.format(hdr))
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self.hdr = hdr
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self.args = (hdr,)
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class BadStatusLine(BadHttpMessage):
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def __init__(self, line: str='') -> None:
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if not isinstance(line, str):
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line = repr(line)
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self.args = (line,)
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self.line = line
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__str__ = Exception.__str__
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__repr__ = Exception.__repr__
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class InvalidURLError(BadHttpMessage):
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pass
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