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# ngus v1.0
# Copyright (C) 2021 Simeon Simeonov
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import cgi
import http.server
import pathlib
__author__ = 'Simeon Simeonov'
__version__ = '1.0'
__license__ = 'GPL3'
DEFAULT_UPLOAD_PAGE = bytes('''<!DOCTYPE html>
<html>
<head>
<title>File Upload</title>
<meta name="viewport" content="width=device-width, user-scalable=no" />
<style type="text/css">
@media (prefers-color-scheme: dark) {
body {
background-color: #000;
color: #fff;
}
}
</style>
</head>
<body>
<h1>File Upload</h1>
<form method="POST" enctype="multipart/form-data">
<input name="ufile" type="file" />
<br/>
<br/>
<input type="submit" />
</form>
</body>
</html>''', 'utf-8')
class NgusBaseHTTPRequestHandler(http.server.BaseHTTPRequestHandler):
"""
A custom http.server.SimpleHTTPRequestHandler that handles POST uploads
"""
def do_GET(self):
"""GET requests will load the upload page"""
self._send_upload_page()
def do_POST(self):
"""POST requests will be handled according to the settings"""
if self.server.basic_auth is not None:
if (
'Authorization' not in self.headers
or len(self.headers['Authorization'].split()) != 2
or self.headers['Authorization'].split()[0].lower() != 'basic'
or self.headers[
'Authorization'
].split()[1] != self.server.basic_auth
):
self.send_response(http.HTTPStatus.UNAUTHORIZED)
self.send_header('WWW-Authenticate',
'Basic realm="ngus", charset="UTF-8"')
self.end_headers()
return None
form = cgi.FieldStorage(fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD': 'POST'})
if not (upload_dir := self.server.upload_dir).is_dir():
raise ValueError('upload_dir is not a directory')
i_name = self.server.input_name
if i_name in form and form[i_name].file and form[i_name].filename:
with open(
upload_dir / pathlib.Path(form[i_name].filename).name,
'wb'
) as f:
f.write(form[i_name].file.read())
self._send_upload_page()
return None
def _send_upload_page(self):
"""Renders an upload page (form)"""
self.send_response(http.HTTPStatus.OK)
self.send_header('Content-Type', 'text/html; charset=utf-8')
self.send_header('Content-Length', len(self.server.upload_page))
self.end_headers()
self.wfile.write(self.server.upload_page)
class NgusHTTPServer(http.server.HTTPServer):
"""A custom http.server.HTTPServer"""
def __init__(self, *arg, **kwargs):
"""
"""
self._basic_auth = kwargs.pop('basic_auth', None)
self._input_name = kwargs.pop('input_name', 'ufile')
self._upload_dir = kwargs.pop('upload_dir', pathlib.Path.cwd())
self._upload_page = kwargs.pop('upload_page', DEFAULT_UPLOAD_PAGE)
super().__init__(*arg, **kwargs)
@property
def basic_auth(self):
"""basic_auth-property"""
return self._basic_auth
@property
def input_name(self):
"""input_name-property"""
return self._input_name
@property
def upload_dir(self):
"""upload_dir-property"""
return self._upload_dir
@property
def upload_page(self):
"""upload_page-property"""
return self._upload_page
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