mirror of https://github.com/cmur2/dyndnsd.git
63 lines
1.7 KiB
Ruby
63 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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require 'ipaddr'
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module Dyndnsd
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class Helper
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# @param hostname [String]
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# @param domain [String]
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# @return [Boolean]
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def self.fqdn_valid?(hostname, domain)
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return false if hostname.length < domain.length + 2
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return false if !hostname.end_with?(domain)
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name = hostname.chomp(domain)
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return false if !name.match(/^[a-zA-Z0-9_-]+\.$/)
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true
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end
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# @param ip [String]
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# @return [Boolean]
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def self.ip_valid?(ip)
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IPAddr.new(ip)
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true
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rescue ArgumentError
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false
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end
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# @param username [String]
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# @param password [String]
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# @param users [Hash]
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# @return [Boolean]
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def self.user_allowed?(username, password, users)
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(users.key? username) && (users[username]['password'] == password)
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end
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# @param hostname [String]
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# @param myips [Array]
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# @param hosts [Hash]
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# @return [Boolean]
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def self.changed?(hostname, myips, hosts)
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# myips order is always deterministic
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((!hosts.include? hostname) || (hosts[hostname] != myips)) && !myips.empty?
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end
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# @param operation [String]
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# @param block [Proc]
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# @return [void]
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def self.span(operation, &block)
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tracer = OpenTelemetry.tracer_provider.tracer(Dyndnsd.name, Dyndnsd::VERSION)
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tracer.in_span(
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operation,
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attributes: {'component' => 'dyndnsd'},
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kind: :server
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) do |span|
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Dyndnsd.logger.debug "Creating span ID #{span.context.hex_span_id} for trace ID #{span.context.hex_trace_id}"
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block.call(span)
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rescue StandardError => e
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span.record_exception(e)
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raise e
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end
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end
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end
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end
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