Termux Sms Gateway

SMS and notification gateway using Android smartphone

Goal:

Send and receive SMS or notification to a smartphone destination from any desktop using a web interface or other client.

Method used

SMS emission

- SMS or notifications are created on one machine (1 or more) on the net.
- Messages are then published to a public or private MQTT server
- Smsquitto MQTT client installed on the smartphone gateway (1 or more)
    - receive and send these messages to recipients.

SMS reception

- SMS received on the smartphone gateway are published to a MQTT server.
- A MQTT client installed on a machine (1 or more) that have subscribed to a valid topic receive these messages

Non-exhaustive use

- Email message usage
- Receive and process alert messages (IOT or other)
- etc ...

Conditions for receiving or sending

• Take a public or private MQTT server to relay messages
• Subscribe MQTT customers to the same topics

You can install your own mosquitto server

https://mosquitto.org/download/

More information on MQTT: https://fr.wikipedia.org/wiki/MQTT

• Security of data transmitted

We may need to encrypt the content for security reasons.

Use encryption with public key / private key on clients

Smartphone installation

https://github.com/termux/termux-app

Termux installation

• Termux application obtained by F-Droid:

  • https://www.f-droid.org/fr/

• Or by google store:

  • https://play.google.com/

IMPORTANT: You must choose either one or the other repository.

• Install
  • Termux
  • Termux: API
  • Termux: Widget

<<<<<<< Upstream, based on origin/main <<<<<<< Upstream, based on origin/main

MQTT client installing:

=======

=======

721d3c3 REAME install

Installing the mqtt client:

5d3172f README install

The following python packages will be installed:

• termux-sms-gateway
• paho-mqtt
• supervisor <<<<<<< Upstream, based on origin/main =======
  • supervisor is a process control system
  • because Android do not support hard links, it will be necessary to patch http.py from library

5d3172f README install

• rsa >> https://stuvel.eu/python-rsa-doc/

Installation procedure

After installing termux on the smartphone, launch Termux

• Copy and paste the following command in the termux terminal

    export PACKAGE="TermuxSmsGateway"&&
    export VERSION="1.0"&&
    mkdir -p $HOME/.termux/tasks&&
    apt install python git termux-api -y&&
    rm -rf TermuxSmsGateway&&
    git clone https://github.com/deunix-educ/TermuxSmsGateway.git&&
    cp -f $PACKAGE/smsquitto-install/smsquitto-st* $HOME/.termux/tasks/&&
    cp -f $PACKAGE/smsquitto/smsquitto-conf.yaml $HOME/.termux/&&
    cp -f $PACKAGE/smsquitto-install/supervisor/supervisord $HOME/.termux/boot/&&
    cp -f $PACKAGE/smsquitto-install/supervisor/supervisord.conf $PREFIX/etc/&&
    cp -f $PACKAGE/smsquitto-install/supervisor/smsquitto.conf $PREFIX/etc/supervisor.d/&&
    pip install $PACKAGE/dist/smsquitto-$VERSION.tar.gz&&
    cd $PREFIX/lib/python3.9/site-packages/supervisor&&
    patch < $PACKAGE/smsquitto-install/supervisor/patch/http.py.patch
  

• Enter to start installation

Installation parameters

<<<<<<< Upstream, based on origin/main

• Installation parameters are in ~/.termux/smsquitto-conf.yaml =======
• smsquitto server parameters are in ~/.termux/smsquitto-conf.yaml

5d3172f README install - host: ip or domain of the MQTT server - port: 1883 or 8883 - keepalive: 60 - username: login - password: password - useSSL: False or True - ca_cert: path/to/file/ca.cert - apikey: string

    - ** IMPORTANT **: This key is used to synchronize the topics with the subscriptions
        - ex: SQTT010203040506079

• Copy and paste the following command in the terminal nano $HOME/.termux/smsquitto-conf.yaml

• Install services (start, stop, status)

  • Install the Tremux widget:Widget on the phone's desktop by keeping your finger on the screen
  • Choose shortcut
  • Change the icon and the name if you want
  • Start, Stop, or Status service by clicking the icon

Uses

• A MQTT client is required to the phone.

  • The smsquittod.py module gives an example of a client written in python.

    • Library is the Eclipse foundation paho-mqtt
    • Simply implemente ClientMQTTBase class

  • The sms-client.html file is another example but in websocket mode.

    • Directly modify the sms-client.html file
    • Launch it directly in a browser
      • by drag and drop
      • by an address of this type
        • file: ///path/to/file/sms-client.html

• Demonstration

  • sms-client.html is fully functional
  • You just have to update the apikey in this file and in the configuration file on the smartphone
  • Set up some mobile numbers to do the tests

Domotiz

• https://www.domoticz.com/wiki/Getting_started

• Send notification from custom HTTP/Action

  • Notification

    • script://notify.sh #FIELD1 #FIELD2 #FIELD3 #FIELD4 #TO #MESSAGE --tls or nothing
    • command
      • /usr/bin/python3 /home/pi/domoticz/scripts/notify.py --method=notify --host=$1 --port=$2 --user=$3 --password=$4 --apikey=$5 --text="$6" $7

  • SMS

    • script://notify.sh #FIELD1 #FIELD2 #FIELD3 #FIELD4 #TO #MESSAGE "00330645953706,0033791246318" --tls or nothing
      • command
        • /usr/bin/python3 /home/pi/domoticz/scripts/smsquitto.py --method=sms --host=$1 --port=$2 --user=$3 --password=$4 --apikey=$5 --text="$6" --phone="$7" $8

  • SSL certification

    • argument --tls, in $7 or $8.
    • the certification key is in domoticz/scripts/smsquitto.py.

  • You must install python3 paho-mqtt library: pip3 install paho-mqtt

API methods

Message sent and received format:

• (topic, payload)
  • topic: is a string that starts with apikey see above
    • apikey/pub/sms
    • apikey/emit/inbox
  • payload: is a Json string
    • {mobile: [mobile1, mobile2, etc ...], subject: "the subject", msg: "the message"}
    • {time: time, payload: payload}
• topics
  • apikey/pub/sms send SMS
  • apikey/pub/notify send notification
  • apikey/pub/location request for Geographic positioning
  • apikey/pub/inbox or all or sent or draft or outbox Read SMS message
  • apikey/pub/kill-service stop the service