view roundup/cgi/exceptions.py @ 6509:1fc765ef6379

Fix 204 responses, hangs and crashes with REST. Remove Content-Type and make sure no content is returned by OPTIONS request in REST interface. In write_html set the Content-Length when response is not encoded/compressed (fixes hang due to missing content-length with unencoded data). In REST interface do not raise UsageError for invalid api version. Return json error with proper message. Fixes crash.
author John Rouillard <rouilj@ieee.org>
date Sat, 16 Oct 2021 13:34:04 -0400
parents c177e7128dc9
children 91ab3e0ffcd0
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"""Exceptions for use in Roundup's web interface.
"""

__docformat__ = 'restructuredtext'

from roundup.exceptions import LoginError, Unauthorised  # noqa: F401

from roundup.anypy.html import html_escape

from roundup.exceptions import RoundupException

class RoundupCGIException(RoundupException):
    pass

class HTTPException(RoundupCGIException):
    pass


class Redirect(HTTPException):
    pass


class NotFound(HTTPException):
    pass


class NotModified(HTTPException):
    pass


class PreconditionFailed(HTTPException):
    pass


class DetectorError(RoundupException):
    """Raised when a detector throws an exception.
Contains details of the exception."""
    def __init__(self, subject, html, txt):
        self.subject = subject
        self.html = html
        self.txt = txt
        BaseException.__init__(self, subject + ' ' + txt)


class FormError(ValueError):
    """An 'expected' exception occurred during form parsing.

    That is, something we know can go wrong, and don't want to alarm the user
    with.

    We trap this at the user interface level and feed back a nice error to the
    user.

    """
    pass


class SendFile(RoundupException):
    """Send a file from the database."""


class SendStaticFile(RoundupException):
    """Send a static file from the instance html directory."""


class SeriousError(RoundupException):
    """Raised when we can't reasonably display an error message on a
    templated page.

    The exception value will be displayed in the error page, HTML
    escaped.
    """
    def __str__(self):
        return """
<html><head><title>Roundup issue tracker: An error has occurred</title>
 <link rel="stylesheet" type="text/css" href="@@file/style.css">
</head>
<body class="body" marginwidth="0" marginheight="0">
 <p class="error-message">%s</p>
</body></html>
""" % html_escape(self.args[0])

# vim: set filetype=python sts=4 sw=4 et si :

Roundup Issue Tracker: http://roundup-tracker.org/