mirror of https://github.com/cmur2/dyndnsd.git
69 lines
1.7 KiB
Ruby
69 lines
1.7 KiB
Ruby
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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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scope = OpenTracing.start_active_span(operation)
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span = scope.span
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span.set_tag('component', 'dyndnsd')
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span.set_tag('span.kind', 'server')
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begin
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block.call(span)
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rescue StandardError => e
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span.set_tag('error', true)
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span.log_kv(
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event: 'error',
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'error.kind': e.class.to_s,
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'error.object': e,
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message: e.message,
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stack: e.backtrace.join("\n")
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)
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raise
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ensure
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scope.close
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end
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end
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end
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end
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