silly

README.md

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+# ruby-rewrite-proxy
+
+This project sets up a simple HTTP proxy using Ruby and Nginx. It's designed to forward requests to a specified host, with the option to replace certain strings in the response.
+
+## Installation
+
+To install the necessary dependencies and set up the proxy, run the following command:
+
+```bash
+bash installer.sh
+```
+
+This will:
+
+    Install Ruby and the 'webrick' gem.
+    Install Nginx and enable it to start on boot.
+    Create a directory in the current user's home directory called 'ruby-proxy'.
+    Clone this repository into the 'ruby-proxy' directory.
+    Prompt you to enter values for 'server_name' and 'proxy_set_header'.
+    Create an Nginx configuration file using the provided template and your input.
+    Enable the new Nginx site.
+    Reload Nginx to apply the changes.
+
+After running the script, don't forget to adjust config.yml to your likings.
+
+## Configuration
+The proxy.rb script reads its configuration from config.yml. This file specifies the host to proxy requests to, the port to listen on, and a set of string replacements to apply to the response.
+
+## Logging
+The proxy.rb script logs its output to ruby-proxy.log in the same directory.
+
+## Usage
+To start the proxy, run the following command:
+
+```bash
+ruby proxy.rb
+```
+
+This will start the proxy, listening on the port specified in config.yml.

config.yml

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+replacements:
+  example.com: example.mydomain.com
+  ">example<": "example @ mydomain<"
+  https:: http:
+host: example.com
+port: 8000
+

installer.sh

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+#!/bin/bash
+
+set -e
+
+# Install Ruby and the Ruby dependency 'webrick'
+if ! command -v ruby &> /dev/null; then
+    echo "Installing Ruby..."
+    sudo apt-get update
+    sudo apt-get install -y ruby-full
+fi
+
+if ! gem list webrick -i > /dev/null; then
+    echo "Installing webrick..."
+    gem install webrick
+fi
+
+# Install Nginx and enable the service
+if ! command -v nginx &> /dev/null; then
+    echo "Installing Nginx..."
+    sudo apt-get install -y nginx
+fi
+
+echo "Enabling Nginx service..."
+sudo systemctl enable nginx
+sudo systemctl start nginx
+
+# Make a directory in the current user's home folder called 'ruby-proxy'
+if [ ! -d ~/ruby-proxy ]; then
+    echo "Creating directory 'ruby-proxy'..."
+    mkdir ~/ruby-proxy
+fi
+
+# Clone the contents of the specified git repository into that folder
+if [ ! -d ~/ruby-proxy/ruby-rewrite-proxy ]; then
+    echo "Cloning repository..."
+    git clone https://adastra7.net/git/crt/ruby-rewrite-proxy.git ~/ruby-proxy
+fi
+
+# Ask the user to set server_name and proxy_set_header
+read -p "Enter server_name (the URL from which you will access the Website): " server_name
+read -p "Enter proxy_set_header (the host header for the website you wanna modify/proxy): " proxy_set_header
+
+# Create the Nginx config file
+if [ ! -f /etc/nginx/sites-available/ruby-proxy ]; then
+    echo "Creating Nginx configuration file..."
+    cat << EOF > /etc/nginx/sites-available/ruby-proxy
+resolver 8.8.8.8;
+
+server {
+    listen 80;
+    server_name $server_name;
+    
+    location / {
+        proxy_pass http://localhost:8000/;
+        proxy_set_header Host $proxy_set_header;
+        proxy_set_header X-Real-IP \$remote_addr;
+        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_ssl_server_name on;
+        proxy_ssl_verify off;
+    }
+
+    location /favicon.ico {
+        return 204;
+        access_log off;
+        log_not_found off;
+    }
+
+    location /robots.txt {
+        return 200 "User-agent: *\nDisallow: /";
+        access_log off;
+        log_not_found off;
+    }
+}
+EOF
+fi
+
+# Enable the site
+if [ ! -f /etc/nginx/sites-enabled/ruby-proxy ]; then
+    echo "Enabling the site..."
+    sudo ln -s /etc/nginx/sites-available/ruby-proxy /etc/nginx/sites-enabled/
+fi
+
+# Reload Nginx to apply the changes
+echo "Reloading Nginx..."
+sudo systemctl reload nginx
+
+echo "The script has completed. Please edit the config.yml in ~/ruby-proxy/config.yml to your liking now before running proxy.rb to start the proxy"
+

proxy.rb

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+#!/usr/bin/env ruby
+
+require "webrick"
+require "net/http"
+require "uri"
+require "yaml"
+
+# Load configuration from file
+config = YAML.load_file(File.join(__dir__, 'config.yml'))
+
+$replacements = config['replacements']
+
+class MyProxy < WEBrick::HTTPServlet::AbstractServlet
+  HOST = config['host'] # set host to proxy duh
+
+  def do_GET(request, response)
+    uri = request.unparsed_uri
+    proxy_request(request, response, Net::HTTP::Get.new(uri, {"User-Agent" => "amongus happy meal guys this is crazy i ordered an amogus happy meal at 3am hugy wugy came and sucked my dick this is so scary"}))
+  end
+
+  def do_POST(request, response)
+    uri = request.unparsed_uri
+    proxy_request(request, response, Net::HTTP::Post.new(uri, {"User-Agent" => "amongus happy meal guys this is crazy i ordered an amogus happy meal at 3am hugy wugy came and sucked my dick this is so scary"}), request.body)
+  end
+
+  def proxy_request(request, response, http_request, body = nil)
+    http = Net::HTTP.new(HOST, 443)
+    http.use_ssl = true
+    http_request.body = body if body
+
+    resp = http.request(http_request)
+    body = resp.body
+
+    response.content_type = resp["content-type"]
+    $replacements.each { |k,v|
+      body = body.gsub(k,v)
+    }
+    response.body = body
+  end
+end
+
+# Redirect stdout and stderr to a log file
+$stdout.reopen(File.join(__dir__, 'ruby-proxy.log'), 'a')
+$stderr.reopen($stdout)
+
+server = WEBrick::HTTPServer.new(:Port => config['port'] || 8000) # define port on which the proxy runs ... so this would be localhost:8000
+server.mount "/", MyProxy
+
+trap("INT"){ server.shutdown }
+server.start
+