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# Copyright New York University and the TUF contributors
# SPDX-License-Identifier: MIT OR Apache-2.0
"""
Define TUF exceptions used inside the new modern implementation.
The names chosen for TUF Exception classes should end in 'Error' except where
there is a good reason not to, and provide that reason in those cases.
"""
#### Repository errors ####
from securesystemslib.exceptions import StorageError # noqa: F401
class RepositoryError(Exception):
"""An error with a repository's state, such as a missing file.
It covers all exceptions that come from the repository side when
looking from the perspective of users of metadata API or ngclient.
"""
class UnsignedMetadataError(RepositoryError):
"""An error about metadata object with insufficient threshold of
signatures.
"""
class BadVersionNumberError(RepositoryError):
"""An error for metadata that contains an invalid version number."""
class EqualVersionNumberError(BadVersionNumberError):
"""An error for metadata containing a previously verified version number."""
class ExpiredMetadataError(RepositoryError):
"""Indicate that a TUF Metadata file has expired."""
class LengthOrHashMismatchError(RepositoryError):
"""An error while checking the length and hash values of an object."""
#### Download Errors ####
class DownloadError(Exception):
"""An error occurred while attempting to download a file."""
class DownloadLengthMismatchError(DownloadError):
"""Indicate that a mismatch of lengths was seen while downloading a file."""
class SlowRetrievalError(DownloadError):
"""Indicate that downloading a file took an unreasonably long time."""
class DownloadHTTPError(DownloadError):
"""
Returned by FetcherInterface implementations for HTTP errors.
Args:
message: The HTTP error message
status_code: The HTTP status code
"""
def __init__(self, message: str, status_code: int):
super().__init__(message)
self.status_code = status_code
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