Amateur radio APRS daemon which listens for messages and responds
Project description
APRSD is a Ham radio APRS message command gateway built on python.
APRSD listens on amateur radio aprs-is network for messages and respond to them. It has a plugin architecture for extensibility. Users of APRSD can write their own plugins that can respond to APRS-IS messages.
You must have an amateur radio callsign to use this software. APRSD gets messages for the configured HAM callsign, and sends those messages to a list of plugins for processing. There are a set of core plugins that provide responding to messages to check email, get location, ping, time of day, get weather, and fortune telling as well as version information of aprsd itself.
APRSD Overview Diagram
Typical use case
Ham radio operator using an APRS enabled HAM radio sends a message to check the weather. an APRS message is sent, and then picked up by APRSD. The APRS packet is decoded, and the message is sent through the list of plugins for processing. For example, the WeatherPlugin picks up the message, fetches the weather for the area around the user who sent the request, and then responds with the weather conditions in that area.
APRSD Capabilities
server - The main aprsd server processor. Send/Rx APRS messages to HAM callsign
send-message - use aprsd to send a command/message to aprsd server. Used for development testing
sample-config - generate a sample aprsd.yml config file for use/editing
bash completion generation. Uses python click bash completion to generate completion code for your .bashrc/.zshrc
List of core server plugins
Plugins function by specifying a regex that is searched for in the APRS message. If it matches, the plugin runs. IF the regex doesn’t match, the plugin is skipped.
EmailPlugin - Check email and reply with contents. Have to configure IMAP and SMTP settings in aprs.yml
FortunePlugin - Replies with old unix fortune random fortune!
LocationPlugin - Checks location of ham operator
PingPlugin - Sends pong with timestamp
QueryPlugin - Allows querying the list of delayed messages that were not ACK’d by radio
TimePlugin - Current time of day
WeatherPlugin - Get weather conditions for current location of HAM callsign
VersionPlugin - Reports the version information for aprsd
Current messages this will respond to:
APRS messages: l(ocation) [callsign] = descriptive current location of your radio 8 Miles E Auburn CA 1673' 39.92150,-120.93950 0.1h ago w(eather) = weather forecast for your radio's current position 58F(58F/46F) Partly Cloudy. Tonight, Heavy Rain. t(ime) = respond with the current time f(ortune) = respond with a short fortune -email_addr email text = send an email, say "mapme" to send a current position/map -2 = resend the last 2 emails from your imap inbox to this radio p(ing) = respond with Pong!/time v(ersion) = Respond with current APRSD Version string anything else = respond with usage
Meanwhile this code will monitor a single imap mailbox and forward email to your BASECALLSIGN over the air. Only radios using the BASECALLSIGN are allowed to send email, so consider this security risk before using this (or Amatuer radio in general). Email is single user at this time.
There are additional parameters in the code (sorry), so be sure to set your email server, and associated logins, passwords. search for “yourdomain”, “password”. Search for “shortcuts” to setup email aliases as well.
Installation:
pip install aprsd
Example usage:
aprsd -h
Help
└─[$] > aprsd -h Usage: aprsd [OPTIONS] COMMAND [ARGS]... Shell completion for click-completion-command Available shell types: bash Bourne again shell fish Friendly interactive shell powershell Windows PowerShell zsh Z shell Default type: auto Options: --version Show the version and exit. -h, --help Show this message and exit. Commands: install Install the click-completion-command completion sample-config This dumps the config to stdout. send-message Send a message to a callsign via APRS_IS. server Start the aprsd server process. show Show the click-completion-command completion code
Commands
Configuration
This command outputs a sample config yml formatted block that you can edit and use to pass in to aprsd with -c. By default aprsd looks in ~/.config/aprsd/aprsd.yml
aprsd sample-config
Output
└─[$] > aprsd sample-config aprs: host: rotate.aprs.net logfile: /tmp/arsd.log login: someusername password: somepassword port: 14580 aprsd: enabled_plugins: - aprsd.plugin.EmailPlugin - aprsd.plugin.FortunePlugin - aprsd.plugin.LocationPlugin - aprsd.plugin.PingPlugin - aprsd.plugin.TimePlugin - aprsd.plugin.WeatherPlugin - aprsd.plugin.VersionPlugin plugin_dir: ~/.config/aprsd/plugins ham: callsign: KFART imap: host: imap.gmail.com login: imapuser password: something here too port: 993 use_ssl: true shortcuts: aa: 5551239999@vtext.com cl: craiglamparter@somedomain.org wb: 555309@vtext.com smtp: host: imap.gmail.com login: something password: some lame password port: 465 use_ssl: false
server
This is the main server command that will listen to APRS-IS servers and look for incomming commands to the callsign configured in the config file
└─[$] > aprsd server --help Usage: aprsd server [OPTIONS] Start the aprsd server process. Options: --loglevel [CRITICAL|ERROR|WARNING|INFO|DEBUG] The log level to use for aprsd.log [default: DEBUG] --quiet Don't log to stdout --disable-validation Disable email shortcut validation. Bad email addresses can result in broken email responses!! -c, --config TEXT The aprsd config file to use for options. [default: ~/.config/aprsd/aprsd.yml] -h, --help Show this message and exit. (.venv3) ┌─[waboring@dl360-1] - [~/devel/aprsd] - [Sun Dec 20, 12:32] - └─[$] <git:(master*)> aprsd server Load config [12/20/2020 12:33:03 PM] [MainThread ] [INFO ] APRSD Started version: 1.0.2 [12/20/2020 12:33:03 PM] [MainThread ] [INFO ] Checking IMAP configuration [12/20/2020 12:33:04 PM] [MainThread ] [INFO ] Checking SMTP configuration
send-message
This command is typically used for development to send another aprsd instance test messages
└─[$] > aprsd send-message -h Usage: aprsd send-message [OPTIONS] TOCALLSIGN [COMMAND]... Send a message to a callsign via APRS_IS. Options: --loglevel [CRITICAL|ERROR|WARNING|INFO|DEBUG] The log level to use for aprsd.log [default: DEBUG] --quiet Don't log to stdout -c, --config TEXT The aprsd config file to use for options. [default: ~/.config/aprsd/aprsd.yml] --aprs-login TEXT What callsign to send the message from. [env var: APRS_LOGIN] --aprs-password TEXT the APRS-IS password for APRS_LOGIN [env var: APRS_PASSWORD] -h, --help Show this message and exit.
Example output:
SEND EMAIL (radio to smtp server)
Received message______________ Raw : KM6XXX>APY400,WIDE1-1,qAO,KM6XXX-1::KM6XXX-9 :-user@host.com test new shortcuts global, radio to pc{29 From : KM6XXX Message : -user@host.com test new shortcuts global, radio to pc Msg number : 29 Sending Email_________________ To : user@host.com Subject : KM6XXX Body : test new shortcuts global, radio to pc Sending ack __________________ Tx(3) Raw : KM6XXX-9>APRS::KM6XXX :ack29 To : KM6XXX Ack number : 29
RECEIVE EMAIL (imap server to radio)
Sending message_______________ 6(Tx3) Raw : KM6XXX-9>APRS::KM6XXX :-somebody@gmail.com email from internet to radio{6 To : KM6XXX Message : -somebody@gmail.com email from internet to radio Received message______________ Raw : KM6XXX>APY400,WIDE1-1,qAO,KM6XXX-1::KM6XXX-9 :ack6 From : KM6XXX Message : ack6 Msg number : 0
LOCATION
Received Message _______________ Raw : KM6XXX-6>APRS,TCPIP*,qAC,T2CAEAST::KM6XXX-14:location{2 From : KM6XXX-6 Message : location Msg number : 2 Received Message _______________ Complete Sending Message _______________ Raw : KM6XXX-14>APRS::KM6XXX-6 :KM6XXX-6: 8 Miles E Auburn CA 0' 0,-120.93584 1873.7h ago{2 To : KM6XXX-6 Message : KM6XXX-6: 8 Miles E Auburn CA 0' 0,-120.93584 1873.7h ago Msg number : 2 Sending Message _______________ Complete Sending ack _______________ Raw : KM6XXX-14>APRS::KM6XXX-6 :ack2 To : KM6XXX-6 Ack : 2 Sending ack _______________ Complete
AND… ping, fortune, time…..
Development
git clone git@github.com:craigerl/aprsd.git
cd aprsd
make
Workflow
While working aprsd, The workflow is as follows
checkout a new branch to work on
git checkout -b mybranch
Edit code
run tox -epep8
run tox -efmt
run tox -p
git commit ( This will run the pre-commit hooks which does checks too )
Once you are done with all of your commits, then push up the branch to github
git push -u origin mybranch
Create a pull request from your branch so github tests can run and we can do a code review.
Release
To do release to pypi:
Tag release with
git tag -v1.XX -m “New release”
push release tag up
git push origin master –tags
Do a test build and verify build is valid
make build
Once twine is happy, upload release to pypi
make upload
Docker Container
Building
There are 2 versions of the container Dockerfile that can be used. The main Dockerfile, which is for building the official release container based off of the pip install version of aprsd and the Dockerfile-dev, which is used for building a container based off of a git branch of the repo.
Official Build
docker build -t hemna6969/aprsd:latest .
Development Build
docker build -t hemna6969/aprsd:latest -f Dockerfile-dev .
Running the container
There is a docker-compose.yml file that can be used to run your container. There are 2 volumes defined that can be used to store your configuration and the plugins directory: /config and /plugins
If you want to install plugins at container start time, then use the environment var in docker-compose.yml specified as APRS_PLUGINS Provide a csv list of pypi installable plugins. Then make sure the plugin python file is in your /plugins volume and the plugin will be installed at container startup. The plugin may have dependencies that are required. The plugin file should be copied to /plugins for loading by aprsd
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