mirror of https://github.com/zulip/zulip.git
76 lines
3.5 KiB
Python
76 lines
3.5 KiB
Python
from django.http import HttpRequest, HttpResponse, HttpResponseForbidden, \
|
|
HttpResponseNotFound
|
|
from django.shortcuts import redirect
|
|
from django.utils.translation import ugettext as _
|
|
|
|
from zerver.lib.response import json_success, json_error
|
|
from zerver.lib.upload import upload_message_image_from_request, get_local_file_path, \
|
|
get_signed_upload_url, check_upload_within_quota
|
|
from zerver.models import UserProfile, validate_attachment_request
|
|
from django.conf import settings
|
|
from sendfile import sendfile
|
|
from mimetypes import guess_type
|
|
|
|
def serve_s3(request: HttpRequest, url_path: str) -> HttpResponse:
|
|
uri = get_signed_upload_url(url_path)
|
|
return redirect(uri)
|
|
|
|
def serve_local(request: HttpRequest, path_id: str) -> HttpResponse:
|
|
local_path = get_local_file_path(path_id)
|
|
if local_path is None:
|
|
return HttpResponseNotFound('<p>File not found</p>')
|
|
|
|
# Here we determine whether a browser should treat the file like
|
|
# an attachment (and thus clicking a link to it should download)
|
|
# or like a link (and thus clicking a link to it should display it
|
|
# in a browser tab). This is controlled by the
|
|
# Content-Disposition header; `django-sendfile` sends the
|
|
# attachment-style version of that header if and only if the
|
|
# attachment argument is passed to it. For attachments,
|
|
# django-sendfile sets the response['Content-disposition'] like
|
|
# this: `attachment; filename="b'zulip.txt'"; filename*=UTF-8''zulip.txt`.
|
|
#
|
|
# The "filename" field (used to name the file when downloaded) is
|
|
# unreliable because it doesn't have a well-defined encoding; the
|
|
# newer filename* field takes precedence, since it uses a
|
|
# consistent format (urlquoted). For more details on filename*
|
|
# and filename, see the below docs:
|
|
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition
|
|
attachment = True
|
|
file_type = guess_type(local_path)[0]
|
|
if file_type is not None and (file_type.startswith("image/") or
|
|
file_type == "application/pdf"):
|
|
attachment = False
|
|
|
|
return sendfile(request, local_path, attachment=attachment)
|
|
|
|
def serve_file_backend(request: HttpRequest, user_profile: UserProfile,
|
|
realm_id_str: str, filename: str) -> HttpResponse:
|
|
path_id = "%s/%s" % (realm_id_str, filename)
|
|
is_authorized = validate_attachment_request(user_profile, path_id)
|
|
|
|
if is_authorized is None:
|
|
return HttpResponseNotFound(_("<p>File not found.</p>"))
|
|
if not is_authorized:
|
|
return HttpResponseForbidden(_("<p>You are not authorized to view this file.</p>"))
|
|
if settings.LOCAL_UPLOADS_DIR is not None:
|
|
return serve_local(request, path_id)
|
|
|
|
return serve_s3(request, path_id)
|
|
|
|
def upload_file_backend(request: HttpRequest, user_profile: UserProfile) -> HttpResponse:
|
|
if len(request.FILES) == 0:
|
|
return json_error(_("You must specify a file to upload"))
|
|
if len(request.FILES) != 1:
|
|
return json_error(_("You may only upload one file at a time"))
|
|
|
|
user_file = list(request.FILES.values())[0]
|
|
file_size = user_file._get_size()
|
|
if settings.MAX_FILE_UPLOAD_SIZE * 1024 * 1024 < file_size:
|
|
return json_error(_("Uploaded file is larger than the allowed limit of %s MB") % (
|
|
settings.MAX_FILE_UPLOAD_SIZE))
|
|
check_upload_within_quota(user_profile.realm, file_size)
|
|
|
|
uri = upload_message_image_from_request(request, user_file, user_profile)
|
|
return json_success({'uri': uri})
|