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66 lines
2.4 KiB
66 lines
2.4 KiB
# Validates IP addresses |
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# |
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# @author Kim Nørgaard <jasen@jasen.dk> |
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class IpValidator < ActiveModel::EachValidator |
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IPV4_REGEX = /^ |
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(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3} |
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(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?) |
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$/x |
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IPV6_REGEX = /^ |
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( |
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(([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)) |
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|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)) |
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|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)) |
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|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4}) |
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|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4}) |
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|(([0-9A-Fa-f]{1,4}:){1,7}:) |
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)$/x |
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# @param [Hash] options Options for validation |
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# @option options [Symbol] :ip_type (:any) The IP address type (:any, :v4 or :v6) |
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# @see ActiveModel::EachValidator#new |
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def initialize(options) |
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options[:ip_type] ||= :any |
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super |
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end |
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def validate_each(record, attribute, value) |
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case options[:ip_type] |
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when :v4 |
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record.errors.add(attribute, options[:message] || :ipv4) unless ipv4?(value) |
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when :v6 |
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record.errors.add(attribute, options[:message] || :ipv6) unless ipv6?(value) |
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else |
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record.errors.add(attribute, options[:message] || :ip) unless ip?(value) |
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end |
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end |
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private |
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# Validates IPv4 address |
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# @param [String] address the ipv4 address |
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# @return [Boolean] the validation result |
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def ipv4?(address) |
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address =~ IPV4_REGEX |
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end |
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# Validates IPv6 address |
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# @param [String] address the ipv6 address |
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# @return [Boolean] the validation result |
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def ipv6?(address) |
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address =~ IPV6_REGEX |
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end |
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# Validates IP (v4 or v6) address |
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# @param [String] address the ip address |
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# @return [Boolean] the validation result |
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def ip?(address) |
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ipv4?(address) || ipv6?(address) |
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end |
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end
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