network-manager-connection-action
Listen connections/deconnections using network-manager's dbus interface and execute specified commands without needing root access
Use case
One possible use case is adding auto ssh canonicalization for company domains when connected to company vpn, this usage can be found in example
directory.
Example run
Output when configured to run with canonicalization on a vpn connection and connecting/disconnecting from NetworkManager:
<user>$ ./target/debug/network-manager-connection-action -c example/config.toml
[2021-05-02T13:51:45Z INFO network_manager_connection_action] Watching for NetworkManager events
[2021-05-02T13:53:41Z INFO network_manager_connection_action] Entreprise VPN Up
CanonicalDomains public.entreprise.com internal.entreprise.com anotherdomains.fromvpn
[2021-05-02T13:56:21Z INFO network_manager_connection_action] Entreprise VPN Down
CanonicalDomains public.entreprise.com
Build and Install
cargo build --release
cp target/release/network-manager-connection-action /usr/bin/network-manager-connection-action
Config
Create a config file, example $HOME/.config/network_manager_connection_actionrc
Config contains network manager uuid that correspond to an existing connection.
You can find connections's UUID using nmcli c
For each connection's config you can choose a command and a context, see examples
Systemd autostart
Put the unit file here
$HOME/.config/systemd/user/network-manager-connection-action.service
Run and enable
systemctl --user daemon-reload
systemctl --user start network-manager-connection-action.service
systemctl --user enable network-manager-connection-action.service
journalctl --user -fu network-manager-connection-action.service
Future
Use systemd varlink interface
At start the program could query already connected connections and apply configuration
The code and functionality could be improved in many ways, don't hesitate to open merge requests :)