51 lines
1011 B
Ruby
51 lines
1011 B
Ruby
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#!/usr/bin/env ruby
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require 'net/http'
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require 'resolv'
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def validate_cidr?(cidr)
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# Check for IPv4 CIDR format
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return false unless cidr =~ /^([0-9]{1,3}\.){3}[0-9]{1,3}\/[0-9]{1,2}$/
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# Parse network address and prefix length
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network_address, prefix_length = cidr.split('/')
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# Validate network address
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begin
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Resolv::DNS.new.getaddress(network_address)
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rescue Resolv::ResolvError
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return false
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end
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# Validate prefix length
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return false if prefix_length.to_i > 32
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true
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end
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def process_url(url)
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begin
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uri = URI(url)
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response = Net::HTTP.get(uri)
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rescue URI::InvalidURIError, Net::HTTPError => e
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puts "Error fetching URL: #{e.message}"
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return
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end
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cidrs = response.split("\n")
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cidrs.each do |cidr|
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if validate_cidr?(cidr)
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puts "Valid CIDR: #{cidr}"
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else
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puts "Invalid CIDR: #{cidr}"
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end
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end
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end
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# Get the URL from the user
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puts "Enter the URL containing the IPv4 CIDR list:"
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url = gets.chomp
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# Process the URL
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process_url(url)
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