mirror of
https://github.com/minetest/contentdb.git
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75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
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# 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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import random
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import string
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from flask import request, flash
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from app.models import *
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def getExtension(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 isAllowedImage(data):
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return imghdr.what(None, data) in ALLOWED_IMAGES
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def shouldReturnJson():
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return "application/json" in request.accept_mimetypes and \
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not "text/html" in request.accept_mimetypes
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def randomString(n):
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return ''.join(random.choice(string.ascii_lowercase + \
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string.ascii_uppercase + string.digits) for _ in range(n))
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def doFileUpload(file, fileType, fileTypeDesc):
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if not file or file is None or file.filename == "":
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flash("No selected file", "danger")
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return None, None
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assert os.path.isdir(app.config["UPLOAD_DIR"]), "UPLOAD_DIR must exist"
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allowedExtensions = []
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isImage = False
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if fileType == "image":
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allowedExtensions = ["jpg", "jpeg", "png"]
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isImage = True
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elif fileType == "zip":
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allowedExtensions = ["zip"]
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else:
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raise Exception("Invalid fileType")
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ext = getExtension(file.filename)
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if ext is None or not ext in allowedExtensions:
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flash("Please upload " + fileTypeDesc, "danger")
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return None, None
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if isImage and not isAllowedImage(file.stream.read()):
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flash("Uploaded image isn't actually an image", "danger")
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return None, None
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file.stream.seek(0)
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filename = randomString(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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