Class: GDKBox::SSHKey

Inherits:
Object
  • Object
show all
Defined in:
lib/gdkbox/ssh_key.rb

Overview

Manages a dedicated ed25519 keypair used to authenticate into boxes.

gdkbox keeps its own key under the gdkbox home rather than touching the user's personal keys. The public half is installed into each box; the private half is referenced from the generated SSH config.

Instance Method Summary collapse

Constructor Details

#initialize(config:, shell: Shell.new) ⇒ SSHKey

Returns a new instance of SSHKey.



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# File 'lib/gdkbox/ssh_key.rb', line 10

def initialize(config:, shell: Shell.new)
  @config = config
  @shell = shell
end

Instance Method Details

#ensure! ⇒ Object

Generate the keypair if it does not yet exist, returning the public key.



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# File 'lib/gdkbox/ssh_key.rb', line 16

def ensure!
  return public_key if File.exist?(@config.public_key_path)

  @config.ensure_dirs!
  unless @shell.which("ssh-keygen")
    raise Error, "ssh-keygen not found on PATH; cannot generate an SSH key"
  end

  @shell.run!(
    "ssh-keygen", "-t", "ed25519",
    "-N", "", "-C", "gdkbox",
    "-f", @config.private_key_path
  )
  public_key
end

#public_key ⇒ Object 



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# File 'lib/gdkbox/ssh_key.rb', line 32

def public_key
  File.read(@config.public_key_path).strip
end