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47 lines
1.7 KiB
47 lines
1.7 KiB
12 years ago
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# skips length validations
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class Hostname2Validator < PAK::ValidatesHostname::HostnameValidator
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def validate_each(record, attribute, value)
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value ||= ''
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# split each hostname into labels and do various checks
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if value.is_a?(String)
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labels = value.split '.'
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labels.each_with_index do |label, index|
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# CHECK 2: hostname label cannot begin or end with hyphen
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add_error(record, attribute, :label_begins_or_ends_with_hyphen) if label =~ /^[-]/i or label =~ /[-]$/
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# Take care of wildcard first label
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next if options[:allow_wildcard_hostname] and label == '*' and index == 0
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# CHECK 3: hostname can only contain characters:
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# a-z, 0-9, hyphen, optional underscore, optional asterisk
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valid_chars = 'a-z0-9\-'
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valid_chars << '_' if options[:allow_underscore] == true
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add_error(record, attribute, :label_contains_invalid_characters, :valid_chars => valid_chars) unless label =~ /^[#{valid_chars}]+$/i
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end
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# CHECK 4: the unqualified hostname portion cannot consist of
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# numeric values only
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if options[:allow_numeric_hostname] == false
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is_numeric_only = (
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(
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Integer(labels[0]) rescue false
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) ? true : false
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)
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add_error(record, attribute, :hostname_label_is_numeric) if is_numeric_only
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end
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# CHECK 5: in order to be fully qualified, the full hostname's
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# TLD must be valid
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if options[:require_valid_tld] == true
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has_tld = options[:valid_tlds].select {
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|tld| tld =~ /^#{Regexp.escape(labels.last || '')}$/i
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}.empty? ? false : true
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add_error(record, attribute, :hostname_is_not_fqdn) unless has_tld
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end
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end
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end
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end
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