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IPv4: private and reserved #784

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Dec 29, 2016
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IPv4: private and reserved #784

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33 changes: 26 additions & 7 deletions lib/faker/internet.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -110,28 +110,47 @@ def private_ip_v4_address
end

def public_ip_v4_address
is_private = private_net_checker
is_reserved = reserved_net_checker
addr = nil
begin
addr = ip_v4_address
end while is_private[addr]
end while is_reserved[addr]
addr
end

def private_nets_regex
[
/^10\./,
/^127\./,
/^169\.254\./,
/^172\.(16|17|18|19|2\d|30|31)\./,
/^192\.168\./
/^10\./, # 10.0.0.0 – 10.255.255.255
/^100\.(6[4-9]|[7-9]\d|1[0-1]\d|12[0-7])\./, # 100.64.0.0 – 100.127.255.255
/^127\./, # 127.0.0.0 – 127.255.255.255
/^169\.254\./, # 169.254.0.0 – 169.254.255.255
/^172\.(1[6-9]|2\d|3[0-1])\./, # 172.16.0.0 – 172.31.255.255
/^192\.0\.0\./, # 192.0.0.0 – 192.0.0.255
/^192\.168\./, # 192.168.0.0 – 192.168.255.255
/^198\.(1[8-9])\./ # 198.18.0.0 – 198.19.255.255
]
end

def private_net_checker
lambda { |addr| private_nets_regex.any? { |net| net =~ addr } }
end

def reserved_nets_regex
[
/^0\./, # 0.0.0.0 – 0.255.255.255
/^192\.0\.2\./, # 192.0.2.0 – 192.0.2.255
/^192\.88\.99\./, # 192.88.99.0 – 192.88.99.255
/^198\.51\.100\./, # 198.51.100.0 – 198.51.100.255
/^203\.0\.113\./, # 203.0.113.0 – 203.0.113.255
/^(22[4-9]|23\d)\./, # 224.0.0.0 – 239.255.255.255
/^(24\d|25[0-5])\./ # 240.0.0.0 – 255.255.255.254 and 255.255.255.255
]
end

def reserved_net_checker
lambda { |addr| (private_nets_regex + reserved_nets_regex).any? { |net| net =~ addr } }
end

def ip_v4_cidr
"#{ip_v4_address}/#{1 + rand(31)}"
end
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52 changes: 34 additions & 18 deletions test/test_faker_internet.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -121,34 +121,50 @@ def test_ip_v4_address
end

def test_private_ip_v4_address
ten_dot = /^10\./
one_two_seven = /^127\./
one_six_nine = /^169\.254/
one_nine_two = /^192\.168\./
one_seven_two = /^172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31)\./
regexps = [
/^10\./, # 10.0.0.0 – 10.255.255.255
/^100\.(6[4-9]|[7-9]\d|1[0-1]\d|12[0-7])\./, # 100.64.0.0 – 100.127.255.255
/^127\./, # 127.0.0.0 – 127.255.255.255
/^169\.254\./, # 169.254.0.0 – 169.254.255.255
/^172\.(1[6-9]|2\d|3[0-1])\./, # 172.16.0.0 – 172.31.255.255
/^192\.0\.0\./, # 192.0.0.0 – 192.0.0.255
/^192\.168\./, # 192.168.0.0 – 192.168.255.255
/^198\.(1[8-9])\./ # 198.18.0.0 – 198.19.255.255
]
expected = Regexp.new regexps.collect{|reg| "(#{reg})"}.join('|')

1000.times do
address = @tester.private_ip_v4_address
assert_match Regexp.new(
"(#{ten_dot})|(#{one_two_seven})|(#{one_six_nine})|(#{one_nine_two})|(#{one_seven_two})"
), address
assert_match expected, address
end
end

def test_public_ip_v4_address
ten_dot = /^10\./
one_two_seven = /^127\./
one_six_nine = /^169\.254/
one_nine_two = /^192\.168\./
one_seven_two = /^172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31)\./
private = [
/^10\./, # 10.0.0.0 – 10.255.255.255
/^100\.(6[4-9]|[7-9]\d|1[0-1]\d|12[0-7])\./, # 100.64.0.0 – 100.127.255.255
/^127\./, # 127.0.0.0 – 127.255.255.255
/^169\.254\./, # 169.254.0.0 – 169.254.255.255
/^172\.(1[6-9]|2\d|3[0-1])\./, # 172.16.0.0 – 172.31.255.255
/^192\.0\.0\./, # 192.0.0.0 – 192.0.0.255
/^192\.168\./, # 192.168.0.0 – 192.168.255.255
/^198\.(1[8-9])\./ # 198.18.0.0 – 198.19.255.255
]

reserved = [
/^0\./, # 0.0.0.0 – 0.255.255.255
/^192\.0\.2\./, # 192.0.2.0 – 192.0.2.255
/^192\.88\.99\./, # 192.88.99.0 – 192.88.99.255
/^198\.51\.100\./, # 198.51.100.0 – 198.51.100.255
/^203\.0\.113\./, # 203.0.113.0 – 203.0.113.255
/^(22[4-9]|23\d)\./, # 224.0.0.0 – 239.255.255.255
/^(24\d|25[0-5])\./ # 240.0.0.0 – 255.255.255.254 and 255.255.255.255
]

1000.times do
address = @tester.public_ip_v4_address
assert_not_match ten_dot, address
assert_not_match one_two_seven, address
assert_not_match one_six_nine, address
assert_not_match one_nine_two, address
assert_not_match one_seven_two, address
private.each { |reg| assert_not_match reg, address }
reserved.each { |reg| assert_not_match reg, address }
end
end

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