diff options
Diffstat (limited to 'bin')
| -rwxr-xr-x | bin/process | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/bin/process b/bin/process index e95dbb9..4effb17 100755 --- a/bin/process +++ b/bin/process @@ -3,13 +3,55 @@ require 'erb' require 'optparse' +def v6rev(input) + # Parse the input to separate address and netmask + address, netmask = input.split('/') + netmask = netmask.to_i + + # Calculate how many bits we actually have (128 - missing bits) + remaining_bits = 128 - netmask + remaining_groups = remaining_bits / 16 + + # Expand the partial address within the context of just the remaining bits + expanded_suffix = expand_ipv6_suffix(address, remaining_groups) + + # Convert to hex string and get nibbles + hex_string = expanded_suffix.gsub(':', '') + + # Split into individual nibbles and reverse for PTR format + nibbles = hex_string.chars.reverse + + # Join with dots + nibbles.join('.') +end + +def expand_ipv6_suffix(address, total_groups) + # Handle :: expansion within the context of just our suffix + if address.include?('::') + parts = address.split('::') + left_parts = parts[0].empty? ? [] : parts[0].split(':') + right_parts = parts[1].empty? ? [] : parts[1].split(':') + + # Calculate how many zero groups we need + missing_groups = total_groups - left_parts.length - right_parts.length + zero_groups = ['0000'] * missing_groups + + all_parts = left_parts + zero_groups + right_parts + else + all_parts = address.split(':') + end + + # Pad each part to 4 digits + all_parts.map { |part| part.rjust(4, '0') }.join(':') +end + # Hash to store our -D variables template_vars = {} # Parse command line options OptionParser.new do |opts| opts.banner = "Usage: #{$0} [options] <input> <output>" - + opts.on('-DVAR=VALUE', 'Define template variable') do |definition| var, value = definition.split('=', 2) if var && value @@ -19,7 +61,7 @@ OptionParser.new do |opts| exit 1 end end - + opts.on('-h', '--help', 'Show this help') do puts opts exit |