Class: Dyndnsd::Helper

Inherits:
Object
  • Object
show all
Defined in:
lib/dyndnsd/helper.rb

Class Method Summary collapse

Class Method Details

.changed?(hostname, myips, hosts) ⇒ Boolean

Parameters:

  • hostname (String)
  • myips (Array)
  • hosts (Hash)

Returns:

  • (Boolean) 


39
40
41
42
 
# File 'lib/dyndnsd/helper.rb', line 39

def self.changed?(hostname, myips, hosts)
  # myips order is always deterministic
  ((!hosts.include? hostname) || (hosts[hostname] != myips)) && !myips.empty?
end

.fqdn_valid?(hostname, domain) ⇒ Boolean

Parameters:

  • hostname (String)
  • domain (String)

Returns:

  • (Boolean) 


10
11
12
13
14
15
16
 
# File 'lib/dyndnsd/helper.rb', line 10

def self.fqdn_valid?(hostname, domain)
  return false if hostname.length < domain.length + 2
  return false if !hostname.end_with?(domain)
  name = hostname.chomp(domain)
  return false if !name.match(/^[a-zA-Z0-9_-]+\.$/)
  true
end

.ip_valid?(ip) ⇒ Boolean

Parameters:

  • ip (String)

Returns:

  • (Boolean) 


20
21
22
23
24
25
 
# File 'lib/dyndnsd/helper.rb', line 20

def self.ip_valid?(ip)
  IPAddr.new(ip)
  true
rescue ArgumentError
  false
end

.span(operation, &block) ⇒ void

This method returns an undefined value.

Parameters:

  • operation (String)
  • block (Proc) 


47
48
49
50
51
52
53
54
55
56
57
58
59
60
 
# File 'lib/dyndnsd/helper.rb', line 47

def self.span(operation, &block)
  tracer = OpenTelemetry.tracer_provider.tracer(Dyndnsd.name, Dyndnsd::VERSION)
  tracer.in_span(
    operation,
    attributes: {'component' => 'dyndnsd'},
    kind: :server
  ) do |span|
    Dyndnsd.logger.debug "Creating span ID #{span.context.hex_span_id} for trace ID #{span.context.hex_trace_id}"
    block.call(span)
  rescue StandardError => e
    span.record_exception(e)
    raise e
  end
end

.user_allowed?(username, password, users) ⇒ Boolean

Parameters:

  • username (String)
  • password (String)
  • users (Hash)

Returns:

  • (Boolean) 


31
32
33
 
# File 'lib/dyndnsd/helper.rb', line 31

def self.user_allowed?(username, password, users)
  (users.key? username) && (users[username]['password'] == password)
end