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# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Our helpful little stand-in for the Internet
"""
# This file is part of Haketilo.
#
# Copyright (C) 2021 jahoti <jahoti@tilde.team>
# Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
#
# I, Wojtek Kosior, thereby promise not to sue for violation of this
# file's license. Although I request that you do not make use of this code
# in a proprietary program, I am not going to enforce this in court.
from hashlib import sha256
from pathlib import Path
from shutil import rmtree
from threading import Lock
import json
from .misc_constants import here
served_scripts = {}
served_scripts_lock = Lock()
def start_serving_script(script_text):
"""
Register given script so that it is served at
https://serve.scrip.ts/?sha256=<script's_sha256_sum>
Returns the URL at which script will be served.
This function lacks thread safety. Might moght consider fixing this if it
turns
"""
sha256sum = sha256(script_text.encode()).digest().hex()
served_scripts_lock.acquire()
served_scripts[sha256sum] = script_text
served_scripts_lock.release()
return f'https://serve.scrip.ts/?sha256={sha256sum}'
def serve_script(command, get_params, post_params):
"""
info() callback to pass to request-handling code in server.py. Facilitates
serving scripts that have been registered with start_serving_script().
"""
served_scripts_lock.acquire()
try:
script = served_scripts.get(get_params['sha256'][0])
finally:
served_scripts_lock.release()
if script is None:
return 404, {}, b''
return 200, {'Content-Type': 'application/javascript'}, script
def dump_scripts(directory='./injected_scripts'):
"""
Write all scripts that have been registered with start_serving_script()
under the provided directory. If the directory already exists, it is wiped
beforehand. If it doesn't exist, it is created.
"""
directory = Path(directory)
rmtree(directory, ignore_errors=True)
directory.mkdir(parents=True)
served_scripts_lock.acquire()
for sha256, script in served_scripts.items():
with open(directory / sha256, 'wt') as file:
file.write(script)
served_scripts_lock.release()
some_data = '{"some": "data"}'
# used by handler function of https://counterdoma.in
request_counter = 0
def serve_counter(command, get_params, post_params):
global request_counter
request_counter += 1
return (
200,
{'Cache-Control': 'private, max-age=0, no-store'},
json.dumps({'counter': request_counter})
)
catalog = {
'http://gotmyowndoma.in':
(302, {'location': 'http://gotmyowndoma.in/index.html'}, None),
'http://gotmyowndoma.in/':
(302, {'location': 'http://gotmyowndoma.in/index.html'}, None),
'http://gotmyowndoma.in/index.html':
(200, {}, here / 'data' / 'pages' / 'gotmyowndomain.html'),
'https://gotmyowndoma.in':
(302, {'location': 'https://gotmyowndoma.in/index.html'}, None),
'https://gotmyowndoma.in/':
(302, {'location': 'https://gotmyowndoma.in/index.html'}, None),
'https://gotmyowndoma.in/index.html':
(200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html'),
'https://gotmyowndoma.in/scripts_to_block_1.html':
(200, {}, here / 'data' / 'pages' / 'scripts_to_block_1.html'),
'https://anotherdoma.in/resource/blocked/by/CORS.json':
lambda command, get_params, post_params: (200, {}, some_data),
'https://counterdoma.in/': serve_counter,
'https://serve.scrip.ts/': serve_script,
'https://site.with.scripts.block.ed':
(302, {'location': 'https://site.with.scripts.block.ed/index.html'}, None),
'https://site.with.scripts.block.ed/':
(302, {'location': 'https://site.with.scripts.block.ed/index.html'}, None),
'https://site.with.scripts.block.ed/index.html':
(200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html'),
'https://site.with.scripts.allow.ed':
(302, {'location': 'https://site.with.scripts.allow.ed/index.html'}, None),
'https://site.with.scripts.allow.ed/':
(302, {'location': 'https://site.with.scripts.allow.ed/index.html'}, None),
'https://site.with.scripts.allow.ed/index.html':
(200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html'),
'https://site.with.paylo.ad':
(302, {'location': 'https://site.with.paylo.ad/index.html'}, None),
'https://site.with.paylo.ad/':
(302, {'location': 'https://site.with.paylo.ad/index.html'}, None),
'https://site.with.paylo.ad/index.html':
(200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html')
}
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