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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2014-2020 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
"""Parsing functions for various HTTP headers."""
import os.path
from PyQt5.QtNetwork import QNetworkRequest
from qutebrowser.utils import log
from qutebrowser.browser.webkit import rfc6266
def parse_content_disposition(reply):
"""Parse a content_disposition header.
Args:
reply: The QNetworkReply to get a filename for.
Return:
A (is_inline, filename) tuple.
"""
is_inline = True
filename = None
content_disposition_header = 'Content-Disposition'.encode('iso-8859-1')
# First check if the Content-Disposition header has a filename
# attribute.
if reply.hasRawHeader(content_disposition_header):
# We use the unsafe variant of the filename as we sanitize it via
# os.path.basename later.
try:
value = bytes(reply.rawHeader(content_disposition_header))
log.rfc6266.debug("Parsing Content-Disposition: {!r}".format(
value))
content_disposition = rfc6266.parse_headers(value)
filename = content_disposition.filename()
except (UnicodeDecodeError, rfc6266.Error):
log.rfc6266.exception("Error while parsing filename")
else:
is_inline = content_disposition.is_inline()
# Then try to get filename from url
if not filename:
filename = reply.url().path().rstrip('/')
# If that fails as well, use a fallback
if not filename:
filename = 'qutebrowser-download'
return is_inline, os.path.basename(filename)
def parse_content_type(reply):
"""Parse a Content-Type header.
The parsing done here is very cheap, as we really only want to get the
Mimetype. Parameters aren't parsed specially.
Args:
reply: The QNetworkReply to handle.
Return:
A [mimetype, rest] list, or [None, None] if unset.
Rest can be None.
"""
content_type = reply.header(QNetworkRequest.ContentTypeHeader)
if content_type is None:
return [None, None]
if ';' in content_type:
ret = content_type.split(';', maxsplit=1)
else:
ret = [content_type, None]
ret[0] = ret[0].strip()
return ret
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