def range(self):
try:
value = self.env['HTTP_RANGE']
if '=' in value:
unit, sep, req_range = value.partition('=')
else:
msg = "The value must be prefixed with a" + \
" range unit, e.g. 'bytes='"
raise HTTPInvalidHeader('Range', msg)
except KeyError:
return None
if ',' in req_range:
msg = 'The value must be a continuous range.'
raise HTTPInvalidHeader('Range', msg)
try:
first, sep, last = req_range.partition('-')
if not sep:
raise ValueError()
if first:
return (int(first), int(last or -1))
elif last:
return (-int(last), -1)
else:
msg = 'The range offsets are missing.'
raise HTTPInvalidHeader(msg, 'Range')
except ValueError:
msg = ('Range must be formatted according to RFC 7233.')
raise HTTPInvalidHeader('Range', msg)
def content_length(self):
# CONTENT_LENGTH try/catch cheaper and faster
try:
length = int(self.env['CONTENT_LENGTH'])
if length < 0:
raise HTTPInvalidHeader('Content-Length',
'Negative Length not allowed.')
return length
except KeyError:
return 0
except ValueError:
raise HTTPInvalidHeader('Content-Length', 'Not an integer')
def get_header_as_datetime(self, header, required=False, obs_date=False):
"""Return an HTTP header with HTTP-Date values as a datetime.
Args:
name (str): Header name, case-insensitive (e.g., 'Date')
Keyword Args:
required (bool): raise HTTPBadRequest (default False)
obs_date (bool): Support obs-date formats according to
RFC 7231 (e.g. Sunday, 06-Nov-94 08:49:37 GMT)
(default False).
Returns:
datetime: The value of the specified header if it exists,
or None if the header is not found and is not required.
Raises:
HTTPBadRequest: The header was not found in the request, but
it was required.
HttpInvalidHeader: The header contained a malformed/invalid value.
"""
try:
http_date = self.get_header(header, required=required)
if http_date is not None:
return to_gmt(http_date, src=TimezoneGMT())
except TypeError:
return None
except ValueError:
msg = "It must be formatted according to RFC 7231, Section 7.1.1.1"
raise HTTPInvalidHeader(header, msg)
def range_unit(self):
try:
value = self.env['HTTP_RANGE']
if '=' in value:
unit, sep, req_range = value.partition('=')
return unit
else:
msg = "The value must be prefixed with a" + \
" range unit, e.g. 'bytes='"
raise HTTPInvalidHeader('Range', msg)
except KeyError:
return None