"""Low-level http related exceptions."""
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from textwrap import indent
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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__(
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self,
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*,
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code: Optional[int] = None,
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message: str = "",
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headers: Optional[_CIMultiDict] = None,
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) -> 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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msg = indent(self.message, " ")
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return f"{self.code}, message:\n{msg}"
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def __repr__(self) -> str:
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return f"<{self.__class__.__name__}: {self.code}, message={self.message!r}>"
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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, *, 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 to satisfy content length header."""
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class DecompressSizeError(PayloadEncodingError):
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"""Decompressed size exceeds the configured limit."""
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class LineTooLong(BadHttpMessage):
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def __init__(
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self, line: str, limit: str = "Unknown", actual_size: str = "Unknown"
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) -> None:
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super().__init__(
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f"Got more than {limit} bytes ({actual_size}) when reading {line}."
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)
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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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hdr_s = hdr.decode(errors="backslashreplace") if isinstance(hdr, bytes) else hdr
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super().__init__(f"Invalid HTTP header: {hdr!r}")
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self.hdr = hdr_s
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self.args = (hdr,)
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class BadStatusLine(BadHttpMessage):
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def __init__(self, line: str = "", error: Optional[str] = None) -> None:
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if not isinstance(line, str):
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line = repr(line)
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super().__init__(error or f"Bad status line {line!r}")
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self.args = (line,)
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self.line = line
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class BadHttpMethod(BadStatusLine):
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"""Invalid HTTP method in status line."""
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def __init__(self, line: str = "", error: Optional[str] = None) -> None:
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super().__init__(line, error or f"Bad HTTP method in status line {line!r}")
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class InvalidURLError(BadHttpMessage):
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pass
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