api.cloud.tenda.com.cn debuging a router

Ehmad

Tenda Listener - PHP Script

This PHP script is designed to receive, display, and log HTTP requests sent to the server. It is particularly useful for debugging and inspecting the data sent by devices connecting to a Tenda router. Specifically, it can capture data sent to api.cloud.tenda.com.cn by redirecting it to a local server.

Features

  • Displays received HTTP headers.
  • Captures and prints GET and POST request data.
  • Shows the raw body of the request (e.g., JSON, XML, or other formats).
  • Allows monitoring of data sent to api.cloud.tenda.com.cn when a new device connects to the router.

Installation

1. Deploy the PHP Script

  1. Place the index.php file in the desired directory on your web server:

    sudo mkdir -p /var/www/html/tenda-listener
sudo nano /var/www/html/tenda-listener/index.php

    Add the PHP script content as described in this repository.

  2. Set proper ownership and permissions for the web directory:

    sudo chown -R www-data:www-data /var/www/html/tenda-listener
sudo chmod -R 755 /var/www/html/tenda-listener

  3. Configure Nginx to serve the PHP script. Create a new site configuration file:

    sudo nano /etc/nginx/sites-available/tenda-listener

    Add the following configuration:

    server {
    listen 80;
    server_name 192.168.0.x;

    root /var/www/html/tenda-listener;
    index index.php;

    location / {
        try_files $uri /index.php;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php7.4-fpm.sock; # Adjust PHP version if necessary
    }
}

  4. Enable the site:

    sudo ln -s /etc/nginx/sites-available/tenda-listener /etc/nginx/sites-enabled/

  5. Test the configuration and reload Nginx:

    sudo nginx -t
sudo systemctl reload nginx

2. Configure DNS Request Forwarding

To capture the data sent to api.cloud.tenda.com.cn, set up DNS request forwarding to redirect requests to your local server:

  1. Modify the DNS Configuration on the Router:

    • Set up a DNS server (like Pi-hole or any DNS resolver) to resolve api.cloud.tenda.com.cn to your local server’s IP (192.168.0.x).
    • For example, if using Pi-hole:
      • Navigate to Internet Settings.
      • Add a dns to 192.168.0.x (your dns server).
        DNS Setting tenda router

  2. Verify DNS Resolution: Run the following command from a device on the same network:

    nslookup api.cloud.tenda.com.cn

    It should return 192.168.0.x.

  3. Once configured, all traffic intended for api.cloud.tenda.com.cn will now be forwarded to your PHP listener.

Usage

When a new device connects to the Tenda router, it sends data to api.cloud.tenda.com.cn. This data will be redirected to your PHP listener at http://192.168.0.x, where it can be inspected.

Viewing Data

  • Open http://192.168.0.x in a browser to view incoming requests.
  • The page displays:
    1. HTTP Headers: Headers sent with the request.
    2. GET/POST Data: Any data sent as query parameters or form data.
    3. Raw Body: The unprocessed body of the request, such as JSON or XML payloads.

Sample Data Captured

Below is an example of data captured when a new device connects to the router:

HTTP Headers:

Array
(
    [Host] => api.cloud.tenda.com.cn
    [User-Agent] => TendaRouter/1.0
    [Content-Type] => application/json
    [Accept] => */*
)

Raw Input Data:

{
    "device_id": "123456789",
    "device_name": "Smartphone",
    "mac_address": "AA:BB:CC:DD:EE:FF",
    "connection_time": "2024-10-31T10:00:00Z"
}

This data shows the device ID, name, MAC address, and the connection timestamp.

Notes

  • This script is for debugging purposes only and should not be exposed publicly without additional security measures.
  • Ensure the PHP version on your server supports the getallheaders function.
  • Use HTTPS for added security if exposing this listener outside your local network.