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connman-trigger

connman-trigger is a small utility that listens for ConnMan network service state changes over D-Bus and executes user-defined scripts in response to connectivity events.

Features

  • Maps ConnMan states to script actions:
    • ready, online → up (run "up" scripts)
    • idle, offline → down (run "down" scripts)
  • Retrieves current network SSID and connection type (e.g., wifi)
  • Executes executable scripts in specified directories, in lexicographical order
  • Exports the following environment variables to each script:
    • NETWORK_STATE: current state (ready, online, idle, or offline)
    • NETWORK_SSID: SSID or unknown
    • CONNECTION_TYPE: connection type or unknown

Installation

  • Requires Go 1.20 or later
  • Clone the repository and build: 
    git clone https://github.com/filippog/connman-trigger.git
cd connman-trigger
make

Usage

./connman-trigger -p <up-scripts-dir> -p <down-scripts-dir>
  • -p <path>: directory containing executable scripts to run on state changes. (repeated)
  • Scripts run with the environment variables listed above.

Colophon

This project is licensed under the Apache License 2.0. See the LICENSE file for details. It has been written with help from codex.