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35
.github/workflows/autoblack.yml vendored
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name: Check / auto apply Black
on:
push:
branches:
- master
jobs:
black:
name: Check / auto apply black
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Check files using the black formatter
uses: psf/black@stable
id: black
with:
options: "."
continue-on-error: true
- shell: pwsh
id: check_files_changed
run: |
# Diff HEAD with the previous commit
$diff = git diff
$HasDiff = $diff.Length -gt 0
Write-Host "::set-output name=files_changed::$HasDiff"
- name: Create Pull Request
if: steps.check_files_changed.outputs.files_changed == 'true'
uses: peter-evans/create-pull-request@v6
with:
token: ${{ secrets.GITHUB_TOKEN }}
title: "Format Python code with Black"
commit-message: ":art: Format Python code with Black"
body: |
This pull request uses the [psf/black](https://github.com/psf/black) formatter.
base: ${{ github.head_ref }} # Creates pull request onto pull request or commit branch
branch: actions/black

10
.gitignore vendored
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venv
__pycache__
*.swp
# Master Key
master.key
# Thin server files
log/*
tmp/*

9
Gemfile Normal file
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source 'https://rubygems.org'
gem 'sinatra'
gem 'thin'
gem 'json'
gem 'data_mapper'
gem 'dm-postgres-adapter'
gem 'pg'
gem 'bcrypt'

85
Gemfile.lock Normal file
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GEM
remote: https://rubygems.org/
specs:
addressable (2.3.4)
bcrypt-ruby (3.0.1)
daemons (1.1.9)
data_mapper (1.2.0)
dm-aggregates (~> 1.2.0)
dm-constraints (~> 1.2.0)
dm-core (~> 1.2.0)
dm-migrations (~> 1.2.0)
dm-serializer (~> 1.2.0)
dm-timestamps (~> 1.2.0)
dm-transactions (~> 1.2.0)
dm-types (~> 1.2.0)
dm-validations (~> 1.2.0)
data_objects (0.10.13)
addressable (~> 2.1)
dm-aggregates (1.2.0)
dm-core (~> 1.2.0)
dm-constraints (1.2.0)
dm-core (~> 1.2.0)
dm-core (1.2.1)
addressable (~> 2.3)
dm-do-adapter (1.2.0)
data_objects (~> 0.10.6)
dm-core (~> 1.2.0)
dm-migrations (1.2.0)
dm-core (~> 1.2.0)
dm-postgres-adapter (1.2.0)
dm-do-adapter (~> 1.2.0)
do_postgres (~> 0.10.6)
dm-serializer (1.2.2)
dm-core (~> 1.2.0)
fastercsv (~> 1.5)
json (~> 1.6)
json_pure (~> 1.6)
multi_json (~> 1.0)
dm-timestamps (1.2.0)
dm-core (~> 1.2.0)
dm-transactions (1.2.0)
dm-core (~> 1.2.0)
dm-types (1.2.2)
bcrypt-ruby (~> 3.0)
dm-core (~> 1.2.0)
fastercsv (~> 1.5)
json (~> 1.6)
multi_json (~> 1.0)
stringex (~> 1.4)
uuidtools (~> 2.1)
dm-validations (1.2.0)
dm-core (~> 1.2.0)
do_postgres (0.10.13)
data_objects (= 0.10.13)
eventmachine (1.0.3)
fastercsv (1.5.5)
json (1.8.0)
json_pure (1.8.0)
multi_json (1.7.7)
pg (0.15.1)
rack (1.5.2)
rack-protection (1.5.0)
rack
sinatra (1.4.3)
rack (~> 1.4)
rack-protection (~> 1.4)
tilt (~> 1.3, >= 1.3.4)
stringex (1.5.1)
thin (1.5.1)
daemons (>= 1.0.9)
eventmachine (>= 0.12.6)
rack (>= 1.0.0)
tilt (1.4.1)
uuidtools (2.1.4)
PLATFORMS
ruby
DEPENDENCIES
data_mapper
dm-postgres-adapter
json
pg
sinatra
thin

661
LICENSE Normal file
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
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The GNU Affero General Public License is designed specifically to
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the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote Network Interaction; Use with the GNU General Public License.
Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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 <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<http://www.gnu.org/licenses/>.

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Procfile Normal file
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web: bundle exec ruby dynette.rb -p $PORT

200
README.md
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@ -1,111 +1,129 @@
YunoHost DynDNS Server
======================
**Note: Tested on Debian wheezy (should work on Ubuntu)**
### Setup
```bash
python3 -m venv venv
source venv/bin/activate
pip3 install -r requirements.txt
```
### Dev
```bash
FLASK_APP=app.py flask run
git clone https://github.com/YunoHost/dynette
```
### Production
- You should also install bind9
- Include `/etc/bind/named.conf.local` in `/etc/bind/named.conf`
- Install the following services
##### `dynette.service`
Web subscribe server deployment
-------------------------------
```
# Systemd config
[Unit]
Description=Dynette gunicorn daemon
After=network.target
[Service]
PIDFile=/run/gunicorn/dynette-pid
User=dynette
Group=dynette
WorkingDirectory=/var/www/dynette
ExecStart=/var/www/dynette/venv/bin/gunicorn -c /var/www/dynette/gunicorn.py wsgi:app
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID
PrivateTmp=true
[Install]
WantedBy=multi-user.target
apt-get install postgresql ruby thin libpq-dev bundler apache2
```
##### `dynette-regen-named-conf.service`
In dynette repository:
```
[Unit]
Description=Dynette named.conf regen
After=network.target
StartLimitIntervalSec=10
StartLimitBurst=5
[Service]
Type=oneshot
WorkingDirectory=/var/www/dynette
ExecStart=/var/www/dynette/venv/bin/python3 /var/www/dynette/regen_named_conf.py
User=root
Group=root
[Install]
WantedBy=multi-user.target
bundle install
```
##### `dynette-regen-named-conf.path`
Thin configuration:
```
[Path]
Unit=dynette-regen-named-conf.service
PathChanged=/var/dynette/db/
[Install]
WantedBy=multi-user.target
thin config -C /etc/thin1.9.1/dynette.yml -c /path/to/dynette/ --servers 3 -p 5000 -e production
```
##### NGINX conf snippet
Apache configuration:
```
location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_redirect off;
proxy_pass http://unix:/var/www/dynette/sock;
proxy_read_timeout 210s;
}
vim /etc/apache2/sites-available/dynette
```
### If we ever decide to add another base domain
We should initialize `/var/lib/bind/BASE_DOMAIN.db` (replace `BASE_DOMAIN` with e.g. nohost.me) with:
```text
$ORIGIN .
$TTL 10 ; 10 seconds
BASE_DOMAIN IN SOA ns0.yunohost.org. hostmaster.yunohost.org. (
1006380 ; serial
10800 ; refresh (3 hours)
3600 ; retry (1 hour)
604800 ; expire (1 week)
10 ; minimum (10 seconds)
)
$TTL 3600 ; 1 hour
NS ns0.yunohost.org.
NS ns1.yunohost.org.
$ORIGIN BASE_DOMAIN.
Paste & change server name in below configuration:
```
<VirtualHost *:80>
ServerName dyndns.yunohost.org
RewriteEngine On
<Proxy balancer://thinservers>
BalancerMember http://127.0.0.1:5000
BalancerMember http://127.0.0.1:5001
BalancerMember http://127.0.0.1:5002
</Proxy>
# Redirect all non-static requests to thin
RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
RewriteRule ^/(.*)$ balancer://thinservers%{REQUEST_URI} [P,QSA,L]
ProxyPass / balancer://thinservers/
ProxyPassReverse / balancer://thinservers/
ProxyPreserveHost on
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
# Custom log file locations
ErrorLog /var/log/apache2/dynette-error.log
CustomLog /var/log/apache2/dynette-access.log combined
</VirtualHost>
```
PostgreSQL configuration:
```
# adduser dynette
# passwd dynette
# su - postgres
$ psql template1
template1=# CREATE USER dynette WITH PASSWORD 'myPassword';
template1=# CREATE DATABASE dynette;
template1=# GRANT ALL PRIVILEGES ON DATABASE dynette to dynette;
template1=# \q
```
Edit dynette.rb, change PostgreSQL password and domains handled, line 11-12:
```
DataMapper.setup(:default, ENV['DATABASE_URL'] || "postgres://dynette:myPassword@localhost/dynette")
DOMAINS = ["nohost.me", "noho.st"]
```
Enable apache2 sites & modules:
```
a2enmod proxy
a2enmod rewrite
a2ensite dynette
service thin start
service apache2 restart
```
DNS configuration
-----------------
```
apt-get install bind9 python
```
Edit dynette.cron.py and change settings:
```
subs_urls = ['https://dyndns.yunohost.org']
ns0 = 'ns0.yunohost.org'
ns1 = 'ns1.yunohost.org'
```
Create and edit master.key file is Dynette directory
```
echo "MyMasterKey" > master.key
```
Create dynette log file
```
touch /var/log/dynette.log
```
Enable cronjob for dynette (crontab -e)
```
* * * * * /path/to/dynette/dynette.cron.py >> /var/log/dynette.log 2>&1
```
Troobleshooting
---------------
If you run into troubles running the DNS server, try to check permissions on
`/var/lib/bind` and check if bind listens on 0.0.0.0 in
`/etc/bind/bind.conf.options`.

0
__init__.py
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224
app.py
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import hmac
import base64
import os
import re
import yaml
import bcrypt
from flask import Flask, jsonify, request
from flask_limiter import Limiter
from flask_limiter.util import get_remote_address
from werkzeug.middleware.proxy_fix import ProxyFix
DOMAIN_REGEX = re.compile(
r"^([a-z0-9]{1}([a-z0-9\-]*[a-z0-9])*)(\.[a-z0-9]{1}([a-z0-9\-]*[a-z0-9])*)*(\.[a-z]{1}([a-z0-9\-]*[a-z0-9])*)$"
)
def trusted_ip():
# This is for example the CI, or developers testing new developments
return request.environ.get("HTTP_X_FORWARDED_HOST") in app.config.get("LIMIT_EXEMPTED_IPS", [])
app = Flask(__name__)
app.config.from_file("config.yml", load=yaml.safe_load)
# cf. https://flask-limiter.readthedocs.io/en/stable/recipes.html#deploying-an-application-behind-a-proxy
app.wsgi_app = ProxyFix(app.wsgi_app, x_for=1)
limiter = Limiter(
get_remote_address,
app=app,
default_limits=["50 per hour"],
#storage_uri="memory://", # <- For development
storage_uri="redis://localhost:6379",
storage_options={"socket_connect_timeout": 30},
strategy="fixed-window", # or "moving-window"
application_limits_exempt_when=trusted_ip,
default_limits_exempt_when=trusted_ip,
)
assert os.path.isdir(
app.config["DB_FOLDER"]
), "You should create the DB folder declared in the config"
def _validate_domain(domain):
if not DOMAIN_REGEX.match(domain):
return {"error": f"This is not a valid domain: {domain}"}, 400
if (
len(domain.split(".")) != 3
or domain.split(".", 1)[-1] not in app.config["DOMAINS"]
):
return {"error": "This subdomain is not handled by this dynette server."}, 400
def _is_available(domain):
return not os.path.exists(f"{app.config['DB_FOLDER']}/{domain}.key")
@app.route("/")
@limiter.exempt
def home():
return "Wanna play the dynette?"
@app.route("/domains")
@limiter.exempt
def domains():
return jsonify(app.config["DOMAINS"]), 200
@app.route("/test/<domain>")
@limiter.limit("50 per hour", exempt_when=trusted_ip)
def availability(domain):
error = _validate_domain(domain)
if error:
return error
if _is_available(domain):
return f'"Domain {domain} is available"', 200
else:
return {"error": f"Subdomain already taken: {domain}"}, 409
@app.route("/key/<key>", methods=["POST"])
@limiter.limit("5 per hour", exempt_when=trusted_ip)
def register(key):
try:
key = base64.b64decode(key).decode()
except Exception as e:
return {"error": "Key format is invalid"}, 400
else:
if len(key) != 89:
return {"error": "Key format is invalid"}, 400
try:
data = dict(request.form) # get_json(force=True)
subdomain = data.get("subdomain")
assert isinstance(subdomain, str)
except Exception as e:
return {"error": f"Invalid request: {str(request.form)}"}, 400
error = _validate_domain(subdomain)
if error:
return error
if not _is_available(subdomain):
return {"error": f"Subdomain already taken: {subdomain}"}, 409
recovery_password = data.get("recovery_password")
if recovery_password and isinstance(recovery_password, str):
if len(recovery_password) < 8:
return {"error": "Recovery password too short"}, 409
if len(recovery_password) > 1024:
return {"error": "Recovery password too long"}, 409
recovery_password = bcrypt.hashpw(
password=recovery_password.encode(), salt=bcrypt.gensalt(14)
)
recovery_password = base64.b64encode(recovery_password).decode()
with open(f"{app.config['DB_FOLDER']}/{subdomain}.key", "w") as f:
f.write(key)
if recovery_password:
with open(f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password", "w") as f:
f.write(recovery_password)
return '"OK"', 201
@app.route("/domains/<subdomain>", methods=["DELETE"])
@limiter.limit("5 per hour", exempt_when=trusted_ip)
def delete_using_recovery_password_or_key(subdomain):
try:
assert isinstance(subdomain, str)
data = dict(request.form) # get_json(force=True)
recovery_password = data.get("recovery_password")
key = data.get("key")
assert (recovery_password and isinstance(recovery_password, str)) or (
key and isinstance(key, str)
)
if key:
key = base64.b64decode(key).decode()
except Exception:
return {"error": "Invalid request"}, 400
error = _validate_domain(subdomain)
if error:
return error
if _is_available(subdomain):
return {"error": "Subdomain already deleted"}, 409
if key:
with open(f"{app.config['DB_FOLDER']}/{subdomain}.key") as f:
if not hmac.compare_digest(key, f.read()):
return '"Access denied"', 403
elif recovery_password:
if not os.path.exists(
f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password"
):
return '"Access denied"', 403
with open(f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password") as f:
hashed = base64.b64decode(f.read())
if not bcrypt.checkpw(recovery_password.encode(), hashed):
return '"Access denied"', 403
# Shouldnt happen, this is checked before
else:
return '"Access denied"', 403
if os.path.exists(f"{app.config['DB_FOLDER']}/{subdomain}.key"):
os.remove(f"{app.config['DB_FOLDER']}/{subdomain}.key")
if os.path.exists(f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password"):
os.remove(f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password")
return '"OK"', 200
@app.route("/domains/<subdomain>/recovery_password", methods=["PUT"])
@limiter.limit("5 per hour", exempt_when=trusted_ip)
def set_recovery_password_using_key(subdomain):
try:
assert isinstance(subdomain, str)
data = dict(request.form) # get_json(force=True)
recovery_password = data.get("recovery_password")
key = data.get("key")
assert (recovery_password and isinstance(recovery_password, str)) and (
key and isinstance(key, str)
)
if key:
key = base64.b64decode(key).decode()
except Exception:
return {"error": "Invalid request"}, 400
error = _validate_domain(subdomain)
if error:
return error
if _is_available(subdomain):
return {"error": "Subdomain not registered"}, 404
with open(f"{app.config['DB_FOLDER']}/{subdomain}.key") as f:
if not hmac.compare_digest(key, f.read()):
return '"Access denied"', 403
if len(recovery_password) < 8:
return {"error": "Recovery password too short"}, 409
if len(recovery_password) > 1024:
return {"error": "Recovery password too long"}, 409
recovery_password = bcrypt.hashpw(
password=recovery_password.encode(), salt=bcrypt.gensalt(14)
)
recovery_password = base64.b64encode(recovery_password).decode()
with open(f"{app.config['DB_FOLDER']}/{subdomain}.recovery_password", "w") as f:
f.write(recovery_password)
return '"OK"', 200

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require './dynette.rb'
run Sinatra::Application

3
config.yml.example
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@ -1,3 +0,0 @@
DOMAINS: [nohost.me, noho.st, ynh.fr]
DB_FOLDER: /var/dynette/db/
LIMIT_EXEMPTED_IPS: []

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delete.html Normal file
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<!doctype html>
<html lang="fr">
<head>
<meta charset="utf-8">
<script>
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* SHA-256 (FIPS 180-4) implementation in JavaScript (c) Chris Veness 2002-2016 */
/* MIT Licence */
/* www.movable-type.co.uk/scripts/sha256.html */
/* */
/* - see http://csrc.nist.gov/groups/ST/toolkit/secure_hashing.html */
/* http://csrc.nist.gov/groups/ST/toolkit/examples.html */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
'use strict';
/**
* SHA-256 hash function reference implementation.
*
* This is a direct implementation of FIPS 180-4, without any optimisations. It is intended to aid
* understanding of the algorithm rather than for production use, though it could be used where
* performance is not critical.
*
* @namespace
*/
var Sha256 = {};
/**
* Generates SHA-256 hash of string.
*
* @param {string} msg - (Unicode) string to be hashed.
* @param {Object} [options]
* @param {string} [options.msgFormat=string] - Message format: 'string' for JavaScript string
* (gets converted to UTF-8 for hashing); 'hex-bytes' for string of hex bytes ('616263' ≡ 'abc') .
* @param {string} [options.outFormat=hex] - Output format: 'hex' for string of contiguous
* hex bytes; 'hex-w' for grouping hex bytes into groups of (4 byte / 8 character) words.
* @returns {string} Hash of msg as hex character string.
*/
Sha256.hash = function(msg, options) {
var defaults = { msgFormat: 'string', outFormat: 'hex' };
var opt = Object.assign(defaults, options);
// note use throughout this routine of 'n >>> 0' to coerce Number 'n' to unsigned 32-bit integer
switch (opt.msgFormat) {
default: // default is to convert string to UTF-8, as SHA only deals with byte-streams
case 'string': msg = Sha256.utf8Encode(msg); break;
case 'hex-bytes':msg = Sha256.hexBytesToString(msg); break; // mostly for running tests
}
// constants [§4.2.2]
var K = [
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 ];
// initial hash value [§5.3.3]
var H = [
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
// PREPROCESSING [§6.2.1]
msg += String.fromCharCode(0x80); // add trailing '1' bit (+ 0's padding) to string [§5.1.1]
// convert string msg into 512-bit blocks (array of 16 32-bit integers) [§5.2.1]
var l = msg.length/4 + 2; // length (in 32-bit integers) of msg + ‘1’ + appended length
var N = Math.ceil(l/16); // number of 16-integer (512-bit) blocks required to hold 'l' ints
var M = new Array(N); // message M is N×16 array of 32-bit integers
for (var i=0; i<N; i++) {
M[i] = new Array(16);
for (var j=0; j<16; j++) { // encode 4 chars per integer (64 per block), big-endian encoding
M[i][j] = (msg.charCodeAt(i*64+j*4)<<24) | (msg.charCodeAt(i*64+j*4+1)<<16) |
(msg.charCodeAt(i*64+j*4+2)<<8) | (msg.charCodeAt(i*64+j*4+3));
} // note running off the end of msg is ok 'cos bitwise ops on NaN return 0
}
// add length (in bits) into final pair of 32-bit integers (big-endian) [§5.1.1]
// note: most significant word would be (len-1)*8 >>> 32, but since JS converts
// bitwise-op args to 32 bits, we need to simulate this by arithmetic operators
var lenHi = ((msg.length-1)*8) / Math.pow(2, 32);
var lenLo = ((msg.length-1)*8) >>> 0;
M[N-1][14] = Math.floor(lenHi);
M[N-1][15] = lenLo;
// HASH COMPUTATION [§6.2.2]
for (var i=0; i<N; i++) {
var W = new Array(64);
// 1 - prepare message schedule 'W'
for (var t=0; t<16; t++) W[t] = M[i][t];
for (var t=16; t<64; t++) {
W[t] = (Sha256.σ1(W[t-2]) + W[t-7] + Sha256.σ0(W[t-15]) + W[t-16]) >>> 0;
}
// 2 - initialise working variables a, b, c, d, e, f, g, h with previous hash value
var a = H[0], b = H[1], c = H[2], d = H[3], e = H[4], f = H[5], g = H[6], h = H[7];
// 3 - main loop (note 'addition modulo 2^32')
for (var t=0; t<64; t++) {
var T1 = h + Sha256.Σ1(e) + Sha256.Ch(e, f, g) + K[t] + W[t];
var T2 = Sha256.Σ0(a) + Sha256.Maj(a, b, c);
h = g;
g = f;
f = e;
e = (d + T1) >>> 0;
d = c;
c = b;
b = a;
a = (T1 + T2) >>> 0;
}
// 4 - compute the new intermediate hash value (note '>>> 0' for 'addition modulo 2^32')
H[0] = (H[0]+a) >>> 0;
H[1] = (H[1]+b) >>> 0;
H[2] = (H[2]+c) >>> 0;
H[3] = (H[3]+d) >>> 0;
H[4] = (H[4]+e) >>> 0;
H[5] = (H[5]+f) >>> 0;
H[6] = (H[6]+g) >>> 0;
H[7] = (H[7]+h) >>> 0;
}
// convert H0..H7 to hex strings (with leading zeros)
for (var h=0; h<H.length; h++) H[h] = ('00000000'+H[h].toString(16)).slice(-8);
// concatenate H0..H7, with separator if required
var separator = opt.outFormat=='hex-w' ? ' ' : '';
return H.join(separator);
};
/**
* Rotates right (circular right shift) value x by n positions [§3.2.4].
* @private
*/
Sha256.ROTR = function(n, x) {
return (x >>> n) | (x << (32-n));
};
/**
* Logical functions [§4.1.2].
* @private
*/
Sha256.Σ0 = function(x) { return Sha256.ROTR(2, x) ^ Sha256.ROTR(13, x) ^ Sha256.ROTR(22, x); };
Sha256.Σ1 = function(x) { return Sha256.ROTR(6, x) ^ Sha256.ROTR(11, x) ^ Sha256.ROTR(25, x); };
Sha256.σ0 = function(x) { return Sha256.ROTR(7, x) ^ Sha256.ROTR(18, x) ^ (x>>>3); };
Sha256.σ1 = function(x) { return Sha256.ROTR(17, x) ^ Sha256.ROTR(19, x) ^ (x>>>10); };
Sha256.Ch = function(x, y, z) { return (x & y) ^ (~x & z); }; // 'choice'
Sha256.Maj = function(x, y, z) { return (x & y) ^ (x & z) ^ (y & z); }; // 'majority'
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/**
* Encodes multi-byte string to utf8 - monsur.hossa.in/2012/07/20/utf-8-in-javascript.html
*/
Sha256.utf8Encode = function(str) {
return unescape(encodeURIComponent(str));
};
/**
* Converts a string of a sequence of hex numbers to a string of characters (eg '616263' => 'abc').
*/
Sha256.hexBytesToString = function(hexStr) {
hexStr = hexStr.replace(' ', ''); // allow space-separated groups
var str = '';
for (var i=0; i<hexStr.length; i+=2) {
str += String.fromCharCode(parseInt(hexStr.slice(i, i+2), 16));
}
return str;
};
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
if (typeof module != 'undefined' && module.exports) module.exports = Sha256; // CommonJs export
/* END SHA256 CODE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
function sendDeleteRequest()
{
// Compute 'true' password
var domain = document.getElementById("domain").value;
var user_password = document.getElementById("password").value;
var true_password = Sha256.hash(domain+":"+user_password).substring(0,32);
// Prepare request
var url = "./domains/"+domain
var params = "recovery_password="+true_password;
var xhttp = new XMLHttpRequest();
// Prepare handler
xhttp.onreadystatechange = function()
{
if (xhttp.readyState == 4)
{
if (xhttp.status == 200)
{
document.getElementById("debug").innerHTML = xhttp.responseText;
}
else
{
document.getElementById("debug").innerHTML = "Error ? " + xhttp.responseText;
}
}
else
{
document.getElementById("debug").innerHTML = "Sending request...";
}
};
// Actually send the request
xhttp.open("DELETE", url, true);
xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send(params);
}
</script>
</head>
<body>
<form>
Domain to delete:<br>
<input type="text" id="domain"><br>
Password:<br>
<input type="password" id="password"><br>
<input type="button" value="Submit" onclick="sendDeleteRequest();">
</form>
<span id="debug"></span>
</body>
</html>

120
dynette.cron.py Executable file
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#!/usr/bin/python
### Configuration ###
conf_file = '/etc/bind/named.conf.local' # Include this filename in '/etc/bind/named.conf'
zone_dir = '/var/lib/bind/' # Do not forget the trailing '/'
subs_urls = ['https://dyndns.yunohost.org'] # 127.0.0.1 if you install subscribe server locally
ns0 = 'ns0.yunohost.org' # Name servers
ns1 = 'ns1.yunohost.org'
rname = 'hostmaster@yunohost.org' # Responsible person (https://tools.ietf.org/html/rfc1035#section-3.3.13)
allowed_operations = {
'.' : ['A', 'AAAA', 'TXT', 'MX'],
'pubsub.' : ['A', 'AAAA'],
'muc.' : ['A', 'AAAA'],
'vjud.' : ['A', 'AAAA'],
'_xmpp-client._tcp.' : ['SRV'],
'_xmpp-server._tcp.' : ['SRV']
}
### Script ###
import os
import sys
import json
from urllib import urlopen
# Get master key
master_key_path = os.path.join(os.path.dirname(__file__), 'master.key')
master_key = open(master_key_path).read().rstrip()
# Bind configuration
lines = ['// Generated by Dynette CRON']
# Loop through Dynette servers
for url in subs_urls:
lines.extend([
'key dynette. {',
' algorithm hmac-md5;',
' secret "'+ master_key +'";',
'};',
])
# Get available DynDNS domains
domains = json.loads(str(urlopen(url +'/domains').read()))
for domain in domains:
# Create zone database if not present
if not os.path.exists(zone_dir + domain +'.db'):
db_lines = [
'$ORIGIN .',
'$TTL 10 ; 10 seconds',
domain+'. IN SOA '+ ns0 +'. '+ rname +'. (',
' 18 ; serial',
' 10800 ; refresh (3 hours)',
' 3600 ; retry (1 hour)',
' 604800 ; expire (1 week)',
' 10 ; minimum (10 seconds)',
' )',
'$TTL 3600 ; 1 hour',
' NS '+ ns0 +'.',
' NS '+ ns1 +'.',
'',
'$ORIGIN '+ domain +'.',
]
with open(zone_dir + domain +'.db', 'w') as zone:
for line in db_lines:
zone.write(line + '\n')
lines.extend([
'zone "'+ domain +'" {',
' type master;',
' file "'+ zone_dir + domain +'.db"; ',
' update-policy {',
' grant dynette. wildcard *.'+ domain +'. ANY;',
])
# Get registered sub-domains
result = json.loads(str(urlopen(url +'/all/'+ domain).read()))
for entry in result:
for subd, type in allowed_operations.items():
if subd == '.': subd = ''
lines.append(' grant '+ entry['subdomain'] +'. name '+ subd + entry['subdomain'] +'. ' + ' '.join(type) +';')
lines.extend([
' };',
'};'
'',
])
for entry in result:
lines.extend([
'key '+ entry['subdomain'] +'. {',
' algorithm hmac-md5;',
' secret "'+ entry['public_key'] +'";',
'};',
])
# Backup old Bind configuration file.
os.system('cp '+ conf_file +' '+ conf_file +'.back')
# Write Bind configuration file.
with open(conf_file, 'w') as zone:
for line in lines:
zone.write(line + '\n')
# Restore ownership
os.system('chown -R bind:bind '+ zone_dir +' '+ conf_file)
# Reload Bind
if os.system('/usr/sbin/rndc reload') == 0:
exit(0)
else:
os.system('cp '+ conf_file +' '+ conf_file +'.bad')
os.system('cp '+ conf_file +'.back '+ conf_file)
os.system('/usr/sbin/rndc reload')
print("An error occured ! Please check daemon.log and your conf.bad")
exit(1)

301
dynette.rb Executable file
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#!/usr/bin/ruby
require 'rubygems'
require 'sinatra'
require 'data_mapper'
require 'json'
require 'base64'
require 'bcrypt'
######################
###  Configuration ###
######################
DataMapper.setup(:default, ENV['DATABASE_URL'] || "postgres://dynette:myPassword@localhost/dynette")
DOMAINS = ["nohost.me", "noho.st"]
ALLOWED_IP = ["127.0.0.1"]
###############
### Classes ###
###############
# Dynette Entry class
class Entry
include DataMapper::Resource
include BCrypt
property :id, Serial
property :public_key, String
property :subdomain, String
property :current_ip, String
property :created_at, DateTime
property :recovery_password, Text
has n, :ips
end
# IP class
class Ip
include DataMapper::Resource
property :id, Serial
property :ip_addr, String
belongs_to :entry
end
# IP Log class
class Iplog
include DataMapper::Resource
property :ip_addr, String, :key => true
property :visited_at, DateTime
end
# IP ban class
class Ipban
include DataMapper::Resource
property :ip_addr, String, :key => true
end
################
### Handlers ###
################
# 404 Error handler
not_found do
content_type :json
halt 404, { :error => "Not found" }.to_json
end
##############
### Routes ###
##############
# Common tasks and settings for every route
before do
# Always return json
content_type :json
# Allow CORS
headers['Access-Control-Allow-Origin'] = '*'
# Ban IP on flood
if Ipban.first(:ip_addr => request.ip)
halt 410, { :error => "Your ip is banned from the service" }.to_json
end
unless %w[domains test all ban unban].include? request.path_info.split('/')[1]
if iplog = Iplog.last(:ip_addr => request.ip)
if iplog.visited_at.to_time > Time.now - 30
halt 410, { :error => "Please wait 30sec" }.to_json
else
iplog.update(:visited_at => Time.now)
end
else
Iplog.create(:ip_addr => request.ip, :visited_at => Time.now)
end
end
end
# Check params
['/test/:subdomain', '/key/:public_key', '/ips/:public_key', '/ban/:ip', '/unban/:ip' ].each do |path|
before path do
if params.has_key?("public_key")
public_key = Base64.decode64(params[:public_key].encode('ascii-8bit'))
unless public_key.length == 24
halt 400, { :error => "Key is invalid: #{public_key.to_s.encode('UTF-8', {:invalid => :replace, :undef => :replace, :replace => '?'})}" }.to_json
end
end
if params.has_key?("subdomain")
unless params[:subdomain].match /^([a-z0-9]{1}([a-z0-9\-]*[a-z0-9])*)(\.[a-z0-9]{1}([a-z0-9\-]*[a-z0-9])*)*(\.[a-z]{1}([a-z0-9\-]*[a-z0-9])*)$/
halt 400, { :error => "Subdomain is invalid: #{params[:subdomain]}" }.to_json
end
unless DOMAINS.include? params[:subdomain].gsub(params[:subdomain].split('.')[0]+'.', '')
halt 400, { :error => "Subdomain #{params[:subdomain]} is not part of available domains: #{DOMAINS.join(', ')}" }.to_json
end
end
if params.has_key?("ip")
unless params[:ip].match /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
halt 400, { :error => "IP is invalid: #{params[:ip]}" }.to_json
end
end
end
end
# Main page, return some basic text
get '/' do
content_type 'text/html'
"Wanna play the dynette ?"
end
# Delete interface for user with recovery password
get '/delete' do
f = File.open("delete.html", "r")
content_type 'text/html'
f.read
end
# Get availables DynDNS domains
get '/domains' do
DOMAINS.to_json
end
# Check for sub-domain vailability
get '/test/:subdomain' do
if entry = Entry.first(:subdomain => params[:subdomain])
halt 409, { :error => "Subdomain already taken: #{entry.subdomain}" }.to_json
else
halt 200, "Domain #{params[:subdomain]} is available".to_json
end
end
# Register a sub-domain
post '/key/:public_key' do
params[:public_key] = Base64.decode64(params[:public_key].encode('ascii-8bit'))
# Check params
halt 400, { :error => "Please indicate a subdomain" }.to_json unless params.has_key?("subdomain")
# If already exists
if entry = Entry.first(:subdomain => params[:subdomain])
halt 409, { :error => "Subdomain already taken: #{entry.subdomain}" }.to_json
end
if entry = Entry.first(:public_key => params[:public_key])
halt 409, { :error => "Key already exists for domain #{entry.subdomain}" }.to_json
end
# If user provided a recovery password, hash and salt it before storing it
if params.has_key?("recovery_password")
recovery_password = BCrypt::Password.create(params[:recovery_password])
else
recovery_password = ""
end
# Process
entry = Entry.new(:public_key => params[:public_key], :subdomain => params[:subdomain], :current_ip => request.ip, :created_at => Time.now, :recovery_password => recovery_password)
entry.ips << Ip.create(:ip_addr => request.ip)
if entry.save
halt 201, { :public_key => entry.public_key, :subdomain => entry.subdomain, :current_ip => entry.current_ip }.to_json
else
halt 412, { :error => "A problem occured during DNS registration" }.to_json
end
end
# Update a sub-domain
put '/key/:public_key' do
params[:public_key] = Base64.decode64(params[:public_key].encode('ascii-8bit'))
entry = Entry.first(:public_key => params[:public_key])
unless request.ip == entry.current_ip
entry.ips << Ip.create(:ip_addr => request.ip)
end
entry.current_ip = request.ip
if entry.save
halt 201, { :public_key => entry.public_key, :subdomain => entry.subdomain, :current_ip => entry.current_ip }.to_json
else
halt 412, { :error => "A problem occured during DNS update" }.to_json
end
end
# Delete a sub-domain from key
delete '/key/:public_key' do
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
params[:public_key] = Base64.decode64(params[:public_key].encode('ascii-8bit'))
if entry = Entry.first(:public_key => params[:public_key])
Ip.first(:entry_id => entry.id).destroy
if entry.destroy
halt 200, "OK".to_json
else
halt 412, { :error => "A problem occured during DNS deletion" }.to_json
end
end
end
# Delete a sub-domain
delete '/domains/:subdomain' do
unless (ALLOWED_IP.include? request.ip) || (params.has_key?("recovery_password"))
halt 403, { :error => "Access denied"}.to_json
end
if entry = Entry.first(:subdomain => params[:subdomain])
# For non-admin
unless (ALLOWED_IP.include? request.ip)
# If no recovery password was provided when registering domain,
# or if wrong password is provided, deny access
if (entry.recovery_password == "") || (BCrypt::Password.new(entry.recovery_password) != params[:recovery_password])
halt 403, { :error => "Access denied" }.to_json
end
end
Ip.first(:entry_id => entry.id).destroy
if entry.destroy
halt 200, "OK".to_json
else
halt 412, { :error => "A problem occured during DNS deletion" }.to_json
end
end
halt 404
end
# Get all registered sub-domains
get '/all' do
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
Entry.all.to_json
end
# Get all registered sub-domains for a specific DynDNS domain
get '/all/:domain' do
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
result = []
Entry.all.each do |entry|
result.push(entry) if params[:domain] == entry.subdomain.gsub(entry.subdomain.split('.')[0]+'.', '')
end
halt 200, result.to_json
end
# ?
get '/ips/:public_key' do
params[:public_key] = Base64.decode64(params[:public_key].encode('ascii-8bit'))
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
ips = []
Entry.first(:public_key => params[:public_key]).ips.all.each do |ip|
ips.push(ip.ip_addr)
end
ips.to_json
end
# Ban an IP address for 30 seconds
get '/ban/:ip' do
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
Ipban.create(:ip_addr => params[:ip])
Ipban.all.to_json
end
# Unban an IP address
get '/unban/:ip' do
unless ALLOWED_IP.include? request.ip
halt 403, { :error => "Access denied"}.to_json
end
Ipban.first(:ip_addr => params[:ip]).destroy
Ipban.all.to_json
end
#DataMapper.auto_migrate! # Destroy db content
DataMapper.auto_upgrade!

11
gunicorn.py
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@ -1,11 +0,0 @@
command = "/var/www/dynette/venv/bin/gunicorn"
pythonpath = "/var/www/dynette"
workers = 4
user = "dynette"
bind = ['0.0.0.0:9876']
pid = "/run/gunicorn/dynette-pid"
errorlog = "/var/log/dynette/error.log"
accesslog = "/var/log/dynette/access.log"
access_log_format = '%({X-Real-IP}i)s %({X-Forwarded-For}i)s %(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s"'
loglevel = "warning"
capture_output = True

24
regen_named_conf.py
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@ -1,24 +0,0 @@
import os
import yaml
import glob
import jinja2
config = yaml.safe_load(open("config.yml").read())
domains = [{"name": domain, "subdomains": []} for domain in config["DOMAINS"]]
for infos in domains:
domain = infos["name"]
for f in glob.glob(config["DB_FOLDER"] + f"*.{domain}.key"):
key = open(f).read()
subdomain = f.split("/")[-1].rsplit(".", 1)[0]
infos["subdomains"].append({"name": subdomain, "key": key})
templateLoader = jinja2.FileSystemLoader(searchpath="./templates/")
templateEnv = jinja2.Environment(loader=templateLoader)
template = templateEnv.get_template("named.conf.j2")
named_conf = template.render(domains=domains)
open('/etc/bind/named.conf.local', 'w').write(named_conf)
os.system('chown -R bind:bind /etc/bind/named.conf.local /var/lib/bind/')
os.system('/usr/sbin/rndc reload')

23
requirements.txt
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@ -1,23 +0,0 @@
async-timeout==4.0.2
bcrypt==4.0.1
click==8.1.3
commonmark==0.9.1
Deprecated==1.2.13
Flask==2.2.2
Flask-Limiter==3.5.0
gunicorn==20.1.0
importlib-metadata==6.0.0
itsdangerous==2.1.2
Jinja2==3.1.2
limits==3.1.6
MarkupSafe==2.1.2
ordered-set==4.1.0
packaging==23.0
Pygments==2.14.0
PyYAML==6.0
redis==4.5.4
rich==12.6.0
typing-extensions==4.4.0
Werkzeug==2.2.3
wrapt==1.14.1
zipp==3.11.0

27
templates/named.conf.j2
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@ -1,27 +0,0 @@
{% for domain in domains %}
zone "{{ domain.name }}" {
type master;
file "/var/lib/bind/{{ domain.name }}.db";
update-policy {
{% for subdomain in domain.subdomains %}
grant {{ subdomain.name }}. name {{ subdomain.name }}. A AAAA TXT MX CAA;
grant {{ subdomain.name }}. name *.{{ subdomain.name }}. A AAAA;
grant {{ subdomain.name }}. name mail._domainkey.{{ subdomain.name }}. TXT;
grant {{ subdomain.name }}. name _dmarc.{{ subdomain.name }}. TXT;
grant {{ subdomain.name }}. name _xmpp-client._tcp.{{ subdomain.name }}. SRV;
grant {{ subdomain.name }}. name _xmpp-server._tcp.{{ subdomain.name }}. SRV;
grant {{ subdomain.name }}. name xmpp-upload.{{ subdomain.name }}. A AAAA CNAME;
grant {{ subdomain.name }}. name muc.{{ subdomain.name }}. A AAAA CNAME;
grant {{ subdomain.name }}. name vjud.{{ subdomain.name }}. A AAAA CNAME;
grant {{ subdomain.name }}. name pubsub.{{ subdomain.name }}. A AAAA CNAME;
{% endfor %}
};
};
{% for subdomain in domain.subdomains %}
key {{ subdomain.name }}. {
algorithm hmac-sha512;
secret "{{ subdomain.key }}";
};
{% endfor %}
{% endfor %}

4
wsgi.py
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from app import app
if __name__ == "__main__":
app.run()