Split out add_file_headers

This commit is contained in:
Erik Johnston 2018-01-05 15:09:43 +00:00
parent ce3a726fc0
commit 47ca5eb882
1 changed files with 42 additions and 28 deletions

View File

@ -70,38 +70,11 @@ def respond_with_file(request, media_type, file_path,
logger.debug("Responding with %r", file_path)
if os.path.isfile(file_path):
request.setHeader(b"Content-Type", media_type.encode("UTF-8"))
if upload_name:
if is_ascii(upload_name):
request.setHeader(
b"Content-Disposition",
b"inline; filename=%s" % (
urllib.quote(upload_name.encode("utf-8")),
),
)
else:
request.setHeader(
b"Content-Disposition",
b"inline; filename*=utf-8''%s" % (
urllib.quote(upload_name.encode("utf-8")),
),
)
# cache for at least a day.
# XXX: we might want to turn this off for data we don't want to
# recommend caching as it's sensitive or private - or at least
# select private. don't bother setting Expires as all our
# clients are smart enough to be happy with Cache-Control
request.setHeader(
b"Cache-Control", b"public,max-age=86400,s-maxage=86400"
)
if file_size is None:
stat = os.stat(file_path)
file_size = stat.st_size
request.setHeader(
b"Content-Length", b"%d" % (file_size,)
)
add_file_headers(request, media_type, file_size, upload_name)
with open(file_path, "rb") as f:
yield logcontext.make_deferred_yieldable(
@ -111,3 +84,44 @@ def respond_with_file(request, media_type, file_path,
finish_request(request)
else:
respond_404(request)
def add_file_headers(request, media_type, file_size, upload_name):
"""Adds the correct response headers in preparation for responding with the
media.
Args:
request (twisted.web.http.Request)
media_type (str): The media/content type.
file_size (int): Size in bytes of the media, if known.
upload_name (str): The name of the requested file, if any.
"""
request.setHeader(b"Content-Type", media_type.encode("UTF-8"))
if upload_name:
if is_ascii(upload_name):
request.setHeader(
b"Content-Disposition",
b"inline; filename=%s" % (
urllib.quote(upload_name.encode("utf-8")),
),
)
else:
request.setHeader(
b"Content-Disposition",
b"inline; filename*=utf-8''%s" % (
urllib.quote(upload_name.encode("utf-8")),
),
)
# cache for at least a day.
# XXX: we might want to turn this off for data we don't want to
# recommend caching as it's sensitive or private - or at least
# select private. don't bother setting Expires as all our
# clients are smart enough to be happy with Cache-Control
request.setHeader(
b"Cache-Control", b"public,max-age=86400,s-maxage=86400"
)
request.setHeader(
b"Content-Length", b"%d" % (file_size,)
)