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