feat: discover other rpi's and setup them

raspberrypi_central/change_hostname.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+CURRENT_HOSTNAME=$1
+NEW_HOSTNAME=$2
+
+sudo hostnamectl set-hostname $NEW_HOSTNAME
+sudo sed -i "s/127.0.1.1.*$CURRENT_HOSTNAME/127.0.1.1\t$NEW_HOSTNAME/g" /etc/hosts
+sudo reboot

raspberrypi_central/core/config/mosquitto/.gitignore

@@ -0,0 +1 @@
+passwd

raspberrypi_central/core/config/mosquitto/mosquitto.conf

@@ -0,0 +1,23 @@
+listener 8883
+
+password_file /mosquitto/config/passwd
+allow_anonymous true
+
+# Types of messages to log. Use multiple log_type lines for logging
+# multiple types of messages.
+# Possible types are: debug, error, warning, notice, information, 
+# none, subscribe, unsubscribe, websockets, all.
+# Note that debug type messages are for decoding the incoming/outgoing
+# network packets. They are not logged in "topics".
+log_type all
+
+
+# cafile /mosquitto/config/certs/ca.crt
+# keyfile /mosquitto/config/certs/mx-pc.key
+# certfile /mosquitto/config/certs/mx-pc.crt
+
+# require_certificate true
+# tls_version tlsv1.2
+
+persistence true
+persistence_location /mosquitto/data/

raspberrypi_central/install.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-sudo apt install -y git vim libffi-dev libssl-dev python python-pip python3-pip pipenv
+sudo apt install -y ipcalc nmap git vim libffi-dev libssl-dev python python-pip python3-pip pipenv
 
 # Docker
 sudo apt-get remove python-configparser

raspberrypi_central/scripts/rpi/get_rpi_model.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+cat /proc/device-tree/model | awk -F 'Rev' '{print $1}'

raspberrypi_central/scripts/rpi/network.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+SELF_LAN_IP=$(hostname -I | awk '{print $1}')
+
+echo "My IP in the LAN is: $SELF_LAN_IP"
+
+exclude_my_self="--exclude $SELF_LAN_IP"
+
+gateway_ip=$(ip route show 0.0.0.0/0 | cut -d\  -f3)
+
+# ip/mask, ex: 192.168.1.0/24
+network_ip_cidr=$(ipcalc $gateway_ip | grep 'Network' | awk '{print $2}')
+
+for raspberry_pi_ip in `sudo nmap -sn $network_ip_cidr | awk 'f==2{print s; f=s=""}/^(Nmap scan|MAC Address)/{sub(/^.*(for|:..) /,"");f++;s=(s?s OFS :"")$0}END{if(f==2)print s}' | grep 'Raspberry' | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'`
+do
+    echo "I've found another RPI on the network: $raspberry_pi_ip."
+
+    # check if we've already setup ssh for this rpi's
+    nb_line=$(cat ~/.ssh/config| grep -o $raspberry_pi_ip | wc -l)
+
+    # gt 0
+    if [ "$nb_line" -gt 10 ]; then
+        echo "The system already knows this device."
+    else
+        # connect with SSH
+        # Change the hostname with the device id. raspberrypi_deviceid
+        DEVICE_ID=$(cat /proc/sys/kernel/random/uuid | cut -d "-" -f 1)
+
+        # Default HOSTNAME given by RPI by default.
+        CURRENT_HOSTNAME="raspberrypi"
+        NEW_HOSTNAME="rpi-$DEVICE_ID"
+
+        # model=$(ssh pi@mx_rpi 'bash -s' < ./get_rpi_model.sh)
+
+        echo "$DEVICE_ID/$raspberry_pi_ip" >> ../../webapp/app/data/new_devices
+
+        # echo "This device id is: $DEVICE_ID"
+        # echo "I'm configuring SSH with keys."
+
+        # KEYNAME="id_$DEVICE_ID"
+
+        # ssh-keygen -t ed25519 -f ~/.ssh/$KEYNAME
+        # eval "$(ssh-agent -s)" >> /dev/null
+        # ssh-add ~/.ssh/$KEYNAME
+
+        # ssh-copy-id -i ~/.ssh/$KEYNAME pi@$raspberry_pi_ip
+
+        # conf="Host $DEVICE_ID \n\t HostName $raspberry_pi_ip \n\t User pi \n\t IdentityFile ~/.ssh/$KEYNAME \n\t IdentitiesOnly yes"
+        # echo -e $conf >> ~/.ssh/config
+
+        # echo "Use ssh pi@$DEVICE_ID to connect."
+
+        # echo "Changing the hostname from $CURRENT_HOSTNAME to $NEW_HOSTNAME"    
+
+        # ssh pi@$DEVICE_ID 'bash -s' < change_hostname.sh $CURRENT_HOSTNAME $NEW_HOSTNAME
+    fi
+done
+
+# I've found another RPI on the network: rpi-ec6d33df.

raspberrypi_central/webapp/app/devices/admin.py

@@ -6,6 +6,7 @@ class DeviceAdmin(admin.ModelAdmin):
     readonly_fields = ('id',)
 
 admin.site.register(models.DeviceType)
-admin.site.register(models.Device, DeviceAdmin)
+admin.site.register(models.Device)
+admin.site.register(models.Location)
 # admin.site.register(SensorInformation)
 # admin.site.register(Sensor)

raspberrypi_central/webapp/app/house/README.md

@@ -0,0 +1,30 @@
+# House
+
+## Telegram bot
+The system can communicate to the resident through Telegram API.
+To setup this communication, you have to:
+- Register your telegram bot api token.
+- Register the chat_id's that will receive messages.
+
+### Create your Telegram Bot
+Please check the [telegram bot documentation](https://core.telegram.org/bots), so every information is up to date.
+
+Basically, you have to:
+
+1) Start a conversation with "BotFather"
+2) Create a new bot, by sending to him this message: `/newbot` 
+3) Tada! Get your token *("HTTP Api")* and save it in the admin.
+
+### Get chat id's
+Of course you do not want that everyone can have access to your bot to manage your house and get information about it!
+
+
+To restrict access, the telegram bot will only send messages and accept messages from `chad_id` that are saved to the database.
+
+To get this information, it can be a little bit tricky, so follow this:
+
+1) With your telegram account, join a conversation with your bot previously created.
+2) Go to `https://api.telegram.org/bot<yourtoken>/getUpdates`. You will have the information in `chat.id`, copy it and go to the admin to save it.
+3) If you cannot see your chat id, remove your bot from the chat and add it back. Resend the previous request and you will see the chat id.
+
+Voilà!

raspberrypi_central/webapp/app/register_devices.py

@@ -0,0 +1,27 @@
+import os
+import django
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'hello_django.settings')
+django.setup()
+
+from devices.models import Device, DeviceType
+
+FILE = './data/new_devices'
+
+if os.path.isfile(FILE):
+    with open(FILE) as new_devices:
+        for new_device in new_devices: 
+            data = new_device.split('/')
+
+            device_id = data[0]
+            device_ip = data[1]
+            device_type = data[2]
+
+            obj, created = DeviceType.objects.get_or_create(
+                type=device_type,
+                defaults={'type': device_type},
+            )
+
+            Device(device_id=device_id, device_type=obj)
+
+        os.remove(FILE)

raspberrypi_central/webapp/setup.md

@@ -0,0 +1,8 @@
+# Setup
+Please follow these instructions before doing anything! Otherwise you will get errors / crashes.
+
+## House
+You have to setup your house configuration. For instance, you have to define the timezone.
+
+## Alarm
+You have to setup the alarm status. To do so, just create an entry with the value.