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67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
# ContentDB
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# Copyright (C) 2018-21 rubenwardy
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import imghdr
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import os
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from flask_babel import lazy_gettext
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from app import app
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from app.logic.LogicError import LogicError
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from app.utils import random_string
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def get_extension(filename):
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return filename.rsplit(".", 1)[1].lower() if "." in filename else None
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ALLOWED_IMAGES = {"jpeg", "png"}
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def is_allowed_image(data):
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return imghdr.what(None, data) in ALLOWED_IMAGES
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def upload_file(file, file_type, file_type_desc):
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if not file or file is None or file.filename == "":
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raise LogicError(400, "Expected file")
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assert os.path.isdir(app.config["UPLOAD_DIR"]), "UPLOAD_DIR must exist"
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is_image = False
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if file_type == "image":
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allowed_extensions = ["jpg", "jpeg", "png"]
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is_image = True
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elif file_type == "zip":
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allowed_extensions = ["zip"]
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else:
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raise Exception("Invalid fileType")
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ext = get_extension(file.filename)
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if ext is None or ext not in allowed_extensions:
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raise LogicError(400, lazy_gettext("Please upload %(file_desc)s", file_desc=file_type_desc))
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if is_image and not is_allowed_image(file.stream.read()):
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raise LogicError(400, lazy_gettext("Uploaded image isn't actually an image"))
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file.stream.seek(0)
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filename = random_string(10) + "." + ext
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filepath = os.path.join(app.config["UPLOAD_DIR"], filename)
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file.save(filepath)
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return "/uploads/" + filename, filepath
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