85 lines
1.8 KiB
Ruby
85 lines
1.8 KiB
Ruby
|
module Gitlab
|
||
|
|
class SSHPublicKey
|
||
|
|
TYPES = %w[rsa dsa ecdsa ed25519].freeze
|
||
|
|
|
||
|
|
Technology = Struct.new(:name, :allowed_sizes)
|
||
|
|
|
||
|
|
Technologies = [
|
||
|
|
Technology.new('rsa', [1024, 2048, 3072, 4096]),
|
||
|
|
Technology.new('dsa', [1024, 2048, 3072]),
|
||
|
|
Technology.new('ecdsa', [256, 384, 521]),
|
||
|
|
Technology.new('ed25519', [256])
|
||
|
|
].freeze
|
||
|
|
|
||
|
|
def self.technology_names
|
||
|
|
Technologies.map(&:name)
|
||
|
|
end
|
||
|
|
|
||
|
|
def self.technology(name)
|
||
|
|
Technologies.find { |ssh_key_technology| ssh_key_technology.name == name }
|
||
|
|
end
|
||
|
|
private_class_method :technology
|
||
|
|
|
||
|
|
def self.allowed_sizes(name)
|
||
|
|
technology(name).allowed_sizes
|
||
|
|
end
|
||
|
|
|
||
|
|
def self.allowed_type?(type)
|
||
|
|
technology_names.include?(type.to_s)
|
||
|
|
end
|
||
|
|
|
||
|
|
attr_reader :key_text, :key
|
||
|
|
|
||
|
|
# Unqualified MD5 fingerprint for compatibility
|
||
|
|
delegate :fingerprint, to: :key, allow_nil: true
|
||
|
|
|
||
|
|
def initialize(key_text)
|
||
|
|
@key_text = key_text
|
||
|
|
|
||
|
|
@key =
|
||
|
|
begin
|
||
|
|
Net::SSH::KeyFactory.load_data_public_key(key_text)
|
||
|
|
rescue StandardError, NotImplementedError
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def valid?
|
||
|
|
key.present?
|
||
|
|
end
|
||
|
|
|
||
|
|
def type
|
||
|
|
return unless valid?
|
||
|
|
|
||
|
|
case key
|
||
|
|
when OpenSSL::PKey::EC
|
||
|
|
:ecdsa
|
||
|
|
when OpenSSL::PKey::RSA
|
||
|
|
:rsa
|
||
|
|
when OpenSSL::PKey::DSA
|
||
|
|
:dsa
|
||
|
|
when Net::SSH::Authentication::ED25519::PubKey
|
||
|
|
:ed25519
|
||
|
|
else
|
||
|
|
raise "Unsupported key type: #{key.class}"
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def bits
|
||
|
|
return unless valid?
|
||
|
|
|
||
|
|
case type
|
||
|
|
when :rsa
|
||
|
|
key.n.num_bits
|
||
|
|
when :dsa
|
||
|
|
key.p.num_bits
|
||
|
|
when :ecdsa
|
||
|
|
key.group.order.num_bits
|
||
|
|
when :ed25519
|
||
|
|
256
|
||
|
|
else
|
||
|
|
raise "Unsupported key type: #{type}"
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|