I want to automate the task of updating the SSID and password of the guest wireless LAN

Updating the guest wifi settings is a hassle, so I'm going to automate this task.

What you can do

--When you run the script, Slack will be issued a QR code with wireless LAN configuration information. --Reading the QR code issued to slack with an iPhone or Android device suggests a wireless LAN connection.

In terms of images, let's do this. 写真 2020-01-01 17 49 24.png

Outline of the mechanism

Generate SSID and password
Make the generated information a QR code image
Make an image of SSID and password information
Throw the above content into Slack

environment

CentOS Linux release 7.7.1908 (Core)
Python 3.6.8

Implementation

See the code I wrote on Github

Try using

Slack settings (OK if you can get Token)

Select app in slack and add bot
Give the bot a name
Get a Token for the bot (this token will be set later)

Set in python code

`rice_cooker.py(8th to 13th lines)`


# Please Write Your Wi-Fi Setting & Slack Token & Font Path
CONPANY_NAME        = 'GUEST'
ENCRYPTION_METHOD   = 'WPA'
SLACK_TOKEN         = ''
SLACK_CHANNEL       = 'freewifi-dev'
FONT_PATH           = '/usr/share/fonts/dejavu/DejaVuSans.ttf'

Enter the following items.

Setting items --CONPANY_NAME ='Enter the first string of SSID' --ENCRYPTION_METHOD ='Enter the wireless LAN encryption method' --SLACK_TOKEN ='Drop the QR code Enter the token to drop into Slack' --SLACK_CHANNEL ='Specify the Slack channel to drop the QR code on' --FONT_PATH ='Specify the position of the font on CentOS'

Drop and confirm QR code on Slack

Run with python3 rice_cooker.py
Check the QR code, SSID and password on slack

Wi-Fi connection from iOS

Start up your iPhone and read the QR code
You will be prompted to connect to the network, so tap Connect
Make sure you are connected to a wireless LAN

You have been successfully connected!

About network setting automation

Originally, after this process, there was code to connect to the AP with SSH and add and remove wireless LAN settings (SSID, Password). I thought I would implement it with Ansible or Netmiko, but the wireless LAN terminal I was using was an Aruba product, and I couldn't use them, so I supported it with Python's expect. If motivation remains, I will write about network setting automation with expect.

Addictive points

--Pillow's Image.width may not be processed correctly, so I replaced the processing with Image.size [0] and made the tea muddy.

reference

--Reference for password creation -Generate password for text with python --Issuance of QR code -Generate and save QR code image with Python, Pillow, qrcode --Image generation and combination -Add margins to the top, bottom, left and right of the image with Python, Pillow and resize -Paste another image to an image with Python, Pillow -Edit images and insert text in Python -How to use Python's image processing library Pillow (PIL) --Notification function to slack -How to upload images to Slack with Python - Docs » Reference » Image Module - slack - api chat.postMessage - slack - api files.upload

Generate an SSID and password, make it a QR code and throw it into Slack.