philomena/lib/search/ip_parser.ex

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2019-11-02 19:34:25 +01:00
defmodule Search.IpParser do
import NimbleParsec
ipv4_octet =
choice([
ascii_char('2') |> ascii_char('5') |> ascii_char([?0..?5]),
ascii_char('2') |> ascii_char([?0..?4]) |> ascii_char([?0..?9]),
ascii_char('1') |> ascii_char([?0..?9]) |> ascii_char([?0..?9]),
ascii_char([?1..?9]) |> ascii_char([?0..?9]),
ascii_char([?0..?9])
])
|> reduce({List, :to_string, []})
ipv4_address =
times(ipv4_octet |> string("."), 3)
|> concat(ipv4_octet)
ipv4_prefix =
ascii_char('/')
|> choice([
ascii_char('3') |> ascii_char([?0..?2]),
ascii_char([?1..?2]) |> ascii_char([?0..?9]),
ascii_char([?0..?9])
])
|> reduce({List, :to_string, []})
ipv6_hexadectet = ascii_string('0123456789abcdefABCDEF', min: 1, max: 4)
ipv6_ls32 =
choice([
ipv6_hexadectet |> string(":") |> concat(ipv6_hexadectet),
ipv4_address
])
ipv6_fragment = ipv6_hexadectet |> string(":")
ipv6_address =
choice([
times(ipv6_fragment, 6) |> concat(ipv6_ls32),
string("::") |> times(ipv6_fragment, 5) |> concat(ipv6_ls32),
ipv6_hexadectet |> string("::") |> times(ipv6_fragment, 4) |> concat(ipv6_ls32),
string("::") |> times(ipv6_fragment, 4) |> concat(ipv6_ls32),
times(ipv6_fragment, 1)
|> concat(ipv6_hexadectet)
|> string("::")
|> times(ipv6_fragment, 3)
|> concat(ipv6_ls32),
ipv6_hexadectet |> string("::") |> times(ipv6_fragment, 3) |> concat(ipv6_ls32),
string("::") |> times(ipv6_fragment, 3) |> concat(ipv6_ls32),
times(ipv6_fragment, 2)
|> concat(ipv6_hexadectet)
|> string("::")
|> times(ipv6_fragment, 2)
|> concat(ipv6_ls32),
times(ipv6_fragment, 1)
|> concat(ipv6_hexadectet)
|> string("::")
|> times(ipv6_fragment, 2)
|> concat(ipv6_ls32),
ipv6_hexadectet |> string("::") |> times(ipv6_fragment, 2) |> concat(ipv6_ls32),
string("::") |> times(ipv6_fragment, 2) |> concat(ipv6_ls32),
times(ipv6_fragment, 3)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_fragment)
|> concat(ipv6_ls32),
times(ipv6_fragment, 2)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_fragment)
|> concat(ipv6_ls32),
times(ipv6_fragment, 1)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_fragment)
|> concat(ipv6_ls32),
ipv6_hexadectet |> string("::") |> concat(ipv6_fragment) |> concat(ipv6_ls32),
string("::") |> concat(ipv6_fragment) |> concat(ipv6_ls32),
times(ipv6_fragment, 4) |> concat(ipv6_hexadectet) |> string("::") |> concat(ipv6_ls32),
times(ipv6_fragment, 3) |> concat(ipv6_hexadectet) |> string("::") |> concat(ipv6_ls32),
times(ipv6_fragment, 2) |> concat(ipv6_hexadectet) |> string("::") |> concat(ipv6_ls32),
times(ipv6_fragment, 1) |> concat(ipv6_hexadectet) |> string("::") |> concat(ipv6_ls32),
ipv6_hexadectet |> string("::") |> concat(ipv6_ls32),
string("::") |> concat(ipv6_ls32),
times(ipv6_fragment, 5)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_hexadectet),
times(ipv6_fragment, 4)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_hexadectet),
times(ipv6_fragment, 3)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_hexadectet),
times(ipv6_fragment, 2)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_hexadectet),
times(ipv6_fragment, 1)
|> concat(ipv6_hexadectet)
|> string("::")
|> concat(ipv6_hexadectet),
ipv6_hexadectet |> string("::") |> concat(ipv6_hexadectet),
string("::") |> concat(ipv6_hexadectet),
times(ipv6_fragment, 6) |> concat(ipv6_hexadectet) |> string("::"),
times(ipv6_fragment, 5) |> concat(ipv6_hexadectet) |> string("::"),
times(ipv6_fragment, 4) |> concat(ipv6_hexadectet) |> string("::"),
times(ipv6_fragment, 3) |> concat(ipv6_hexadectet) |> string("::"),
times(ipv6_fragment, 2) |> concat(ipv6_hexadectet) |> string("::"),
times(ipv6_fragment, 1) |> concat(ipv6_hexadectet) |> string("::"),
ipv6_hexadectet |> string("::"),
string("::")
])
ipv6_prefix =
ascii_char('/')
|> choice([
ascii_char('1') |> ascii_char('2') |> ascii_char([?0..?8]),
ascii_char('1') |> ascii_char([?0..?1]) |> ascii_char([?0..?9]),
ascii_char([?1..?9]) |> ascii_char([?0..?9]),
ascii_char([?0..?9])
])
|> reduce({List, :to_string, []})
ip =
choice([
ipv4_address |> optional(ipv4_prefix),
ipv6_address |> optional(ipv6_prefix)
])
|> reduce({Enum, :join, []})
|> label("a valid IPv4 or IPv6 address and optional CIDR prefix")
|> unwrap_and_tag(:ip)
|> eos()
defparsec :parse, ip
end