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Rely on built-in ruby private IP detection (#30848)

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Matt Jankowski 2024-06-27 03:16:59 -04:00 committed by GitHub
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3 changed files with 33 additions and 4 deletions
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2
Gemfile
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@ -100,8 +100,6 @@ gem 'json-ld'
gem 'json-ld-preloaded', '~> 3.2'
gem 'rdf-normalize', '~> 0.5'
gem 'private_address_check', '~> 0.5'
gem 'opentelemetry-api', '~> 1.2.5'
group :opentelemetry do

2
Gemfile.lock
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@ -595,7 +595,6 @@ GEM
actionmailer (>= 3)
net-smtp
premailer (~> 1.7, >= 1.7.9)
private_address_check (0.5.0)
propshaft (0.9.0)
actionpack (>= 7.0.0)
activesupport (>= 7.0.0)
@ -994,7 +993,6 @@ DEPENDENCIES
pg (~> 1.5)
pghero
premailer-rails
private_address_check (~> 0.5)
propshaft
public_suffix (~> 6.0)
puma (~> 6.3)

33
app/lib/private_address_check.rb Normal file
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@ -0,0 +1,33 @@
# frozen_string_literal: true
module PrivateAddressCheck
module_function
CIDR_LIST = [
IPAddr.new('0.0.0.0/8'), # Current network (only valid as source address)
IPAddr.new('100.64.0.0/10'), # Shared Address Space
IPAddr.new('172.16.0.0/12'), # Private network
IPAddr.new('192.0.0.0/24'), # IETF Protocol Assignments
IPAddr.new('192.0.2.0/24'), # TEST-NET-1, documentation and examples
IPAddr.new('192.88.99.0/24'), # IPv6 to IPv4 relay (includes 2002::/16)
IPAddr.new('198.18.0.0/15'), # Network benchmark tests
IPAddr.new('198.51.100.0/24'), # TEST-NET-2, documentation and examples
IPAddr.new('203.0.113.0/24'), # TEST-NET-3, documentation and examples
IPAddr.new('224.0.0.0/4'), # IP multicast (former Class D network)
IPAddr.new('240.0.0.0/4'), # Reserved (former Class E network)
IPAddr.new('255.255.255.255'), # Broadcast
IPAddr.new('64:ff9b::/96'), # IPv4/IPv6 translation (RFC 6052)
IPAddr.new('100::/64'), # Discard prefix (RFC 6666)
IPAddr.new('2001::/32'), # Teredo tunneling
IPAddr.new('2001:10::/28'), # Deprecated (previously ORCHID)
IPAddr.new('2001:20::/28'), # ORCHIDv2
IPAddr.new('2001:db8::/32'), # Addresses used in documentation and example source code
IPAddr.new('2002::/16'), # 6to4
IPAddr.new('fc00::/7'), # Unique local address
IPAddr.new('ff00::/8'), # Multicast
].freeze
def private_address?(address)
address.private? || address.loopback? || address.link_local? || CIDR_LIST.any? { |cidr| cidr.include?(address) }
end
end