Epicyon, meaning "more than a dog". Largest of the Borophaginae which lived in North America 20-5 million years ago.
Epicyon is a fediverse server suitable for self-hosting a small number of accounts on low power systems.
Key features:
- Open standards: HTML, CSS, ActivityPub S2S and C2S, RSS, CalDAV.
- Supports common web browsers and shell browsers.
- Will not drain your mobile or laptop battery.
- Customisable themes. It doesn't have to look bland.
- Emoji reactions.
- Geospatial hashtags.
- Does not require much RAM, either on server or client.
- Suitable for installation on single board computers.
- No timeline algorithms.
- No javascript.
- No database. Data stored as ordinary files.
- No fashionable web frameworks. "Boring by design".
- No blockchain garbage.
- Written in Python, with few dependencies.
- AGPL license, which big tech hates.
Epicyon is for people who are tired of big anything and just want to DIY their online social experience without much fuss or expense. Think water cooler discussions rather than shouting into the void, in which you're mainly just reading and responding to the posts of people that you're following.
User Manual - Keyboard navigation - Project Goals - Commandline interface - Customizations - Software Architecture - Code of Conduct - Principles of Unity - C2S Desktop Client - Coding Style
Matrix room: #epicyon:conduit.libreserver.org
Includes emojis designed by OpenMoji โ the open-source emoji and icon project. License: CC BY-SA 4.0. Blob Cat Emoji and Meowmoji were made by Nitro Blob Hub, licensed under Apache 2.0. Digital Pets emoji were made by Tomcat94 and licensed under CC0.
You will need python version 3.7 or later.
On Arch/Parabola:
sudo pacman -S tor python-pip python-pysocks python-cryptography \
imagemagick python-requests \
perl-image-exiftool python-dateutil \
certbot flake8 bandit
sudo pip3 install pyqrcode pypng
One package needs to be built manually from the Arch User Repository (AUR), since it is not included in the usual repositories.
su - epicyon
cd /tmp
git clone https://aur.archlinux.org/python-django-timezone-field.git
cd python-django-timezone-field.git
makepkg -sir
exit
Or on Debian:
sudo apt install -y \
tor python3-socks imagemagick \
python3-setuptools \
python3-cryptography \
python3-dateutil \
python3-idna python3-requests \
python3-django-timezone-field \
libimage-exiftool-perl python3-flake8 \
python3-pyqrcode python3-png python3-bandit \
certbot nginx wget
In the most common case you'll be using systemd to set up a daemon to run the server.
The following instructions install Epicyon to the /opt directory. It's not essential that it be installed there, and it could be in any other preferred directory.
Clone the repo, or if you downloaded the tarball then extract it into the /opt directory.
cd /opt
git clone --depth 1 https://gitlab.com/bashrc2/epicyon
Add a dedicated user so that we don't have to run as root.
adduser --system --home=/opt/epicyon --group epicyon
Link news mirrors:
mkdir /var/www/YOUR_DOMAIN
mkdir -p /opt/epicyon/accounts/newsmirror
ln -s /opt/epicyon/accounts/newsmirror /var/www/YOUR_DOMAIN/newsmirror
Edit /etc/systemd/system/epicyon.service and add the following:
[Unit]
Description=epicyon
After=syslog.target
After=network.target
[Service]
Type=simple
User=epicyon
Group=epicyon
WorkingDirectory=/opt/epicyon
ExecStart=/usr/bin/python3 /opt/epicyon/epicyon.py --port 443 --proxy 7156 --domain YOUR_DOMAIN --registration open --log_login_failures
Environment=USER=epicyon
Environment=PYTHONUNBUFFERED=true
Environment=PYTHONIOENCODING=utf-8
Restart=always
StandardError=syslog
CPUQuota=80%
ProtectHome=true
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
ProtectKernelLogs=true
ProtectHostname=true
ProtectClock=true
ProtectProc=invisible
ProcSubset=pid
PrivateTmp=true
PrivateUsers=true
PrivateDevices=true
PrivateIPC=true
MemoryDenyWriteExecute=true
NoNewPrivileges=true
LockPersonality=true
RestrictRealtime=true
RestrictSUIDSGID=true
RestrictNamespaces=true
SystemCallArchitectures=native
[Install]
WantedBy=multi-user.target
Here the server was installed to /opt/epicyon, but you can change that to wherever you installed it.
Then run the daemon:
systemctl enable epicyon
chown -R epicyon:epicyon /opt/epicyon
systemctl start epicyon
Check the status of the daemon with:
systemctl status epicyon
If it's not running then you can also look at the log:
journalctl -u epicyon
You'll also need to set up a web server configuration. For Nginx edit /etc/nginx/sites-available/YOUR_DOMAIN as follows:
server {
listen 80;
listen [::]:80;
server_name YOUR_DOMAIN;
access_log /dev/null;
error_log /dev/null;
client_max_body_size 31m;
client_body_buffer_size 128k;
index index.html;
rewrite ^ https://$server_name$request_uri? permanent;
}
server {
listen 443 ssl http2;
server_name YOUR_DOMAIN;
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_min_length 1024;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css application/json application/ld+json application/javascript text/xml application/xml application/rdf+xml application/xml+rss text/javascript;
ssl_stapling off;
ssl_stapling_verify off;
ssl on;
ssl_certificate /etc/letsencrypt/live/YOUR_DOMAIN/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/YOUR_DOMAIN/privkey.pem;
#ssl_dhparam /etc/ssl/certs/YOUR_DOMAIN.dhparam;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers HIGH:!MEDIUM:!LOW:!aNULL:!NULL:!SHA;
ssl_prefer_server_ciphers on;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off;
add_header Content-Security-Policy "default-src https:; script-src https: 'unsafe-inline'; style-src https: 'unsafe-inline'";
add_header X-Frame-Options DENY;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header X-Download-Options noopen;
add_header X-Permitted-Cross-Domain-Policies none;
add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload" always;
access_log /dev/null;
error_log /dev/null;
index index.html;
location /newsmirror {
root /var/www/YOUR_DOMAIN;
try_files $uri =404;
}
keepalive_timeout 70;
sendfile on;
location / {
proxy_http_version 1.1;
client_max_body_size 31M;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forward-Proto http;
proxy_set_header X-Nginx-Proxy true;
proxy_temp_file_write_size 64k;
proxy_connect_timeout 10080s;
proxy_send_timeout 10080;
proxy_read_timeout 10080;
proxy_buffer_size 64k;
proxy_buffers 16 32k;
proxy_busy_buffers_size 64k;
proxy_redirect off;
proxy_request_buffering off;
proxy_buffering off;
proxy_pass http://localhost:7156;
tcp_nodelay on;
}
}
Changing your domain name as appropriate. Activate the configuration with:
ln -s /etc/nginx/sites-available/YOUR_DOMAIN /etc/nginx/sites-enabled/
Generate a LetsEncrypt certificate.
systemctl stop nginx
certbot certonly -n --server https://acme-v02.api.letsencrypt.org/directory --standalone -d YOUR_DOMAIN --renew-by-default --agree-tos --email YOUR_EMAIL
systemctl start nginx
And restart the web server:
systemctl restart nginx
If you need to use fail2ban then failed login attempts can be found in accounts/loginfailures.log.
If you are using the Caddy web server then see caddy.example.conf
Static analysis can be run with:
./static_analysis
To run a security audit:
./security_audit
Note that not all of the issues identified will necessarily be relevant to this project. Consider its output as a list of things which potentially can be investigated but usually will turn out not to be relevant.
If you don't have access to the clearnet, or prefer not to use it, then it's possible to run an Epicyon instance easily from your laptop. There are scripts within the deploy
directory which can be used to install an instance on a Debian or Arch/Parabola operating system. With some modification of package names they could be also used with other distros.
Please be aware that such installations will not federate with ordinary fediverse instances on the clearnet, unless those instances have been specially modified to do so. But onion instances will federate with other onion instances and i2p instances with other i2p instances.
If you want to use a particular font then copy it into the fonts directory, rename it as custom.ttf/woff/woff2/otf and then restart the Epicyon daemon.
systemctl restart epicyon
If you want to use your own favicon then copy your favicon.ico
file to the base directory where you installed Epicyon.
When changing themes you may need to ensure that your nginx cache is cleared (/var/www/cache/*) and that your local browser cache is cleared for the site (Shift + Reload). Otherwise images and icons from the previous theme may remain.
If you want to add a new theme then first add the name of your theme to the translations files.
Within the theme
directory create a directory with the name of your theme and add icons and banners. As a quick way to begin you could copy the contents of theme/default
, then edit the graphics. Keep the size of images as small as possible to avoid creating a laggy user interface.
On a running instance you can experiment with colors or fonts by editing epicyon.css
and then reloading the web page. Once you are happy with the results then you can update the changed variable values within your theme/yourtheme/theme.json
file.
Epicyon normally uses one set of CSS files whose variables are then altered per theme. If you want to use entirely bespoke CSS then copy epicyon-*.css
into your theme directory and edit it to your requirements. This will be used rather than the default CSS files. Be warned that if you're maintaining the CSS files yourself then you may need to keep up with whatever changes are happening upstream, otherwise your user interface will break.
To run the unit tests:
python3 epicyon.py --tests
To run the network tests. These simulate instances exchanging messages.
python3 epicyon.py --testsnetwork