1

1.rb

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+#!/usr/bin/env ruby
+
+require 'net/http'
+require 'resolv'
+
+def validate_cidr?(cidr)
+  # Check for IPv4 CIDR format
+  return false unless cidr =~ /^([0-9]{1,3}\.){3}[0-9]{1,3}\/[0-9]{1,2}$/
+
+  # Parse network address and prefix length
+  network_address, prefix_length = cidr.split('/')
+
+  # Validate network address
+  begin
+    Resolv::DNS.new.getaddress(network_address)
+  rescue Resolv::ResolvError
+    return false
+  end
+
+  # Validate prefix length
+  return false if prefix_length.to_i > 32
+
+  true
+end
+
+def process_url(url)
+  begin
+    uri = URI(url)
+    response = Net::HTTP.get(uri)
+  rescue URI::InvalidURIError, Net::HTTPError => e
+    puts "Error fetching URL: #{e.message}"
+    return
+  end
+
+  cidrs = response.split("\n")
+  cidrs.each do |cidr|
+    if validate_cidr?(cidr)
+      puts "Valid CIDR: #{cidr}"
+    else
+      puts "Invalid CIDR: #{cidr}"
+    end
+  end
+end
+
+# Get the URL from the user
+puts "Enter the URL containing the IPv4 CIDR list:"
+url = gets.chomp
+
+# Process the URL
+process_url(url)

2.rb

@@ -0,0 +1,39 @@
+#!/usr/bin/env ruby
+
+require 'net/http'
+require 'netaddr'
+
+def validate_cidr?(cidr)
+  begin
+    IPAddr.new(cidr)
+    return true
+  rescue IPAddr::InvalidAddressError
+    return false
+  end
+end
+
+def process_url(url)
+  begin
+    uri = URI(url)
+    response = Net::HTTP.get(uri)
+  rescue URI::InvalidURIError, Net::HTTPError => e
+    puts "Error fetching URL: #{e.message}"
+    return
+  end
+
+  cidrs = response.split("\n")
+  cidrs.each do |cidr|
+    if validate_cidr?(cidr)
+      puts "Valid CIDR: #{cidr}"
+    else
+      puts "Invalid CIDR: #{cidr}"
+    end
+  end
+end
+
+# Get the URL from the user
+puts "Enter the URL containing the IPv4 CIDR list:"
+url = gets.chomp
+
+# Process the URL
+process_url(url)