172 lines
5 KiB
Markdown
172 lines
5 KiB
Markdown
# About sms-handler
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[sms-handler](https://code.philo.ydns.eu/philorg/sms-handler) is a simple companion service of the
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*SMS to URL Forwarder* app available on [F-Droid](https://f-droid.org/en/packages/tech.bogomolov.incomingsmsgateway/),
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to send notification mails on reception of SMSes.
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Main audience: people who run a server on the public internet, configured with an email server
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or configured as a relay.
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## Installation
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```sh
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PIP_EXTRA_INDEX_URL=https://pypi.org/simple/ pip install --index-url https://code.philo.ydns.eu/api/packages/philorg/pypi/simple/ sms-handler
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```
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Debian and other systems prefer using `pipx` instead of `pip`:
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```sh
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sudo apt install -y pipx
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PIP_EXTRA_INDEX_URL=https://pypi.org/simple/ pipx install --index-url https://code.philo.ydns.eu/api/packages/philorg/pypi/simple/ sms-handler
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```
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*sms-handler* can be run with any unprivileged user.
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However due to standard security schemes, opening a port in the range 1-1024
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is allowed to privileged users only (such as *root*).
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Use `sudo` to install as root if *sms-handler* is to be configured
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with a reserved port.
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### Upgrade
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```sh
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pip upgrade sms-handler
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```
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or:
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```sh
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pipx upgrade sms-handler
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```
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## Configuration
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Configuration is done by environment variables, prefixed by `SMS_HANDLER_`:
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* `SMS_HANDLER_MAIL_SENDER`: origin email address (default: *username*@localhost)
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* `SMS_HANDLER_MAIL_TO`: destination email address (default: *username*@localhost)
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* `SMS_HANDLER_MAIL_SERVER`: address of the mail server (default: localhost)
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* `SMS_HANDLER_MAIL_SERVER_PORT`: port of the mail server (default: 25)
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* `SMS_HANDLER_MAIL_SERVER_START_TLS`: initiate mail server connection with TLS (default: no)
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* `SMS_HANDLER_MAIL_TEMPLATE`: used to format the body of the mails
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* `SMS_HANDLER_MAIL_ENABLE`: no or false to disable mails (default: yes)
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The default settings work with a mail server runs on the localhost,
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and mails are sent to the user that owns the process.
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The `SMS_HANDLER_MAIL_TEMPLATE` variable is used with Python `str.format()`.
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The field names are the same as the default JSON setting in the *SMS to URL Forwarder* app.
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The default setting formats emails as below:
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```text
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{text}
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---
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From: {from} {fromName}
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Sent: {sentStamp:%c}
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Received: {receivedStamp:%c}
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Sim: {sim}
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```
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### SMS handler app configuration
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Set the *Webhook URL* with as `https://your.server.name:8025/sms-handle`.
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*Note*: the URI path `/sms-handle` is not configurable.
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## Run
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### In foreground
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```sh
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sms-handler
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```
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Set port and listen address:
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```sh
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sms-handler --port 80125 --host 192.168.100.55
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```
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### As a daemon (Systemd)
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Create a service as below, adapt the email addresses (`snoopy@peanuts.com` in this example).
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Settings for the web server (listen address and port) are given in the ExecStart statement.
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Other parameters are given as environment variables (see above).
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```systemd
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[Unit]
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Description=SMS handler
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[Service]
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ExecStart=/home/snoopy/.local/bin/sms-handler
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Environment=SMS_HANDLER_MAIL_SENDER=snoopy@peanuts.com
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Environment=SMS_HANDLER_MAIL_TO=snoopy@peanuts.com
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Restart=on-failure
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[Install]
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WantedBy=default.target
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```
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### Run in a container
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*Sms-handler* is also packaged as a container for running with *docker*,
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*podman*, or *Kunernetes*.
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See `CONTAINER.md` for the details.
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## Run behind a reverse proxy
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*sms-handler* can run behind a reverse proxy (Nginx, Apache, Lighttpd, HAProxy, Caddy, Traefik, etc),
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eg. for HTTPs support. The URI (configured in the *SMS to URL Forwarder* app) can be prefixed
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to dispatch different applications on the same server.
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[Caddy](https://caddyserver.com/) is suggested as it is straightforward to set up, with this Caddyfile extract:
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```text
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my.example.com {
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handle /sms-handler/* {
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uri strip_prefix /sms-handler
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reverse_proxy 127.0.0.1:8025
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}
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}
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```
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Replace the public host name `my.example.com` and
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the destination IP:port `127.0.0.1:8025` for your setup.
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## Development and test
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*sms-handler* is packaged with [uv](https://docs.astral.sh/uv/).
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Download source code, create a Python virtual environment, install dependencies and run the tests:
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```sh
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git clone https://code.philo.ydns.eu/philorg/sms-handler.git
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cd sms-handler
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uv venv
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uv sync
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. .venv/bin/activate # for bash. For fish: . .venv/bin/activate.fish
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pytest -s tests/basic.py
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```
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The *sms-handler* source includes a CI test workflow for [Forgejo](https://forgejo.org/).
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## Compatibility
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*sms-handler* is also compatible with
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[this fork of *SMS to URL Forwarder*](>https://github.com/scottmconway/android_income_sms_gateway_webhook)
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which includes also the sender's name.
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## Alternatives
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For a more flexible way to use a tool like *SMS to URL Forwarder*,
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a pub/sub service like [ntfy](https://ntfy.sh/) should be considered.
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It makes it easy to integrate with other components
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for notification on various devices and automation.
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## License, etc
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*sms-handler* is BSD licensed. Suggestions and contributions are welcome.
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<a href="https://liberapay.com/Philo/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a>
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