Class: SSHKit::Backend::Netssh::KnownHostsKeys

Inherits:
Object
  • Object
show all
Includes:
Mutex_m
Defined in:
lib/sshkit/backends/netssh/known_hosts.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ KnownHostsKeys


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# File 'lib/sshkit/backends/netssh/known_hosts.rb', line 10

def initialize(path)
  super()
  @path = File.expand_path(path)
  @hosts_keys = nil
end

Instance Method Details

#keys_for(hostlist) ⇒ Object


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# File 'lib/sshkit/backends/netssh/known_hosts.rb', line 16

def keys_for(hostlist)
  keys, hashes = hosts_keys, hosts_hashes
  parse_file unless keys && hashes
  keys, hashes = hosts_keys, hosts_hashes

  host_names = hostlist.split(',')

  keys_found = host_names.map { |h| keys[h] || [] }.compact.inject(:&)
  return keys_found unless keys_found.empty?

  host_names.each do |host|
    hashes.each do |(hmac, salt), hash_keys|
      if OpenSSL::HMAC.digest(sha1, salt, host) == hmac
        return hash_keys
      end
    end
  end

  []
end