Text0Nly - Simple PGP-enabled messenger

Installation:

1. Database setup:

   a. Start MySQL and set root password:
      mysql_secure_installation
      # Follow prompts to set root password and secure installation

   b. Create database and user:
      mysql -u root -p
      # Enter your root password when prompted
      
      CREATE DATABASE messenger;
      USE messenger;
      
      # For new installation:
      source main/create.sql
      
      # For updating existing installation:
      source main/migrate.sql
      
      # Create user with password
      CREATE USER 'messenger'@'localhost' IDENTIFIED BY 'your_secure_password';
      GRANT ALL PRIVILEGES ON messenger.* TO 'messenger'@'localhost';
      FLUSH PRIVILEGES;
      exit;

   c. Test connection:
      mysql -u messenger -p
      # Enter your messenger user password
      # If you can connect, the user is set up correctly

2. Configuration:
   Copy main/config.php.example to main/config.php
   Edit main/config.php and set your database credentials:
   - host: usually 'localhost'
   - name: 'messenger'
   - user: 'messenger'
   - pass: your_secure_password from step 1b

3. Apache setup:

CentOS:
   # Enable EPEL repository
   dnf install epel-release
   dnf update
   
   # Install required packages
   dnf install httpd php php-mysqlnd php-pecl-redis redis mariadb-server
   cp configs/apache.conf.centos /etc/httpd/conf.d/text0nly.conf
   cp configs/php.ini /etc/php.ini
   chown -R apache:apache /var/www/html/main
   chmod -R 755 /var/www/html/main
   systemctl start redis
   systemctl enable redis
   systemctl start mariadb
   systemctl enable mariadb
   systemctl start httpd
   systemctl enable httpd
   echo "extension=redis.so" > /etc/php.d/redis.ini
   systemctl restart httpd

Alpine:
   apk add apache2 php php-mysql php-redis redis mariadb
   cp configs/apache.conf.debian /etc/apache2/sites-available/text0nly.conf
   cp configs/php.ini /etc/php/php.ini
   chown -R www-data:www-data /var/www/html/main
   chmod -R 755 /var/www/html/main
   ln -s /etc/apache2/sites-available/text0nly.conf /etc/apache2/sites-enabled/
   rc-update add redis default
   rc-update add mariadb default
   rc-update add apache2 default
   rc-service redis start
   rc-service mariadb start
   rc-service apache2 start

Debian:
   apt install apache2 php php-mysql php-redis redis mariadb-server
   cp configs/apache.conf.debian /etc/apache2/sites-available/text0nly.conf
   cp configs/php.ini /etc/php/php.ini
   chown -R www-data:www-data /var/www/html/main
   chmod -R 755 /var/www/html/main
   a2ensite text0nly.conf
   systemctl start redis
   systemctl enable redis
   systemctl start mariadb
   systemctl enable mariadb
   systemctl start apache2
   systemctl enable apache2

Files:
   main/ - Web files
   configs/ - Server configs
   configs/apache.conf.centos - Apache config for CentOS
   configs/apache.conf.debian - Apache config for Debian/Alpine
   configs/php.ini - PHP configuration
   main/config.php - Database configuration (create from config.php.example)
   main/create.sql - Initial database structure
   main/migrate.sql - Database migrations
   main/RateLimiter.php - DoS protection
   main/index.php - Main page
   main/register.php - Registration
   main/api.php - Message API

API usage:

GET /api.php - Get messages
   Parameters:
   - limit: number of messages (1-100, default: 50)
   
   Example:
   curl http://localhost/api.php?limit=10
   
   Response:
   {
       "messages": [
           {
               "username": "user",
               "message": "text",
               "created_at": "2024-03-21 12:34:56",
               "signature": "[Signed]",
               "is_encrypted": true
           }
       ]
   }

POST /api.php - Send message
   Headers:
   - Content-Type: application/json
   
   Body:
   {
       "username": "name",
       "message": "text",
       "signature": "pgp_signature",
       "encrypted": true
   }
   
   Example:
   curl -X POST http://localhost/api.php -H "Content-Type: application/json" -d '{
       "username": "name",
       "message": "text",
       "signature": "pgp_signature",
       "encrypted": true
   }'
   
   Note: Messages can only be sent by unregistered usernames