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filename can be latin-1, not just ascii

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only normalize basic name when utf-8 header is needed
ref #2223
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David Lord 2017-04-12 09:18:07 -07:00
parent e13eaeeaf2
commit 09b49104f3
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1 changed files with 4 additions and 7 deletions
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11
flask/helpers.py
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@ -484,7 +484,7 @@ def send_file(filename_or_fp, mimetype=None, as_attachment=False,
.. _RFC 2231: https://tools.ietf.org/html/rfc2231#section-4
:param filename_or_fp: the filename of the file to send in `latin-1`.
:param filename_or_fp: the filename of the file to send.
This is relative to the :attr:`~Flask.root_path`
if a relative path is specified.
Alternatively a file object might be provided in
@ -541,15 +541,12 @@ def send_file(filename_or_fp, mimetype=None, as_attachment=False,
raise TypeError('filename unavailable, required for '
'sending as attachment')
normalized = unicodedata.normalize(
'NFKD', text_type(attachment_filename)
)
try:
normalized.encode('ascii')
attachment_filename = attachment_filename.encode('latin-1')
except UnicodeEncodeError:
filenames = {
'filename': normalized.encode('ascii', 'ignore'),
'filename': unicodedata.normalize(
'NFKD', attachment_filename).encode('latin-1', 'ignore'),
'filename*': "UTF-8''%s" % url_quote(attachment_filename),
}
else: