code: def env():
      
  
      ssh = cij.env_to_dict(PREFIX, REQUIRED)
      if "KEY" in ssh:
          ssh["KEY"] = cij.util.expand_path(ssh["KEY"])
  
      if cij.ENV.get("SSH_PORT") is None:
          cij.ENV["SSH_PORT"] = "22"
          cij.warn("cij.ssh.env: SSH_PORT was not set, assigned: %r" % (
              cij.ENV.get("SSH_PORT")
          ))
  
      if cij.ENV.get("SSH_CMD_TIME") is None:
          cij.ENV["SSH_CMD_TIME"] = "1"
          cij.warn("cij.ssh.env: SSH_CMD_TIME was not set, assigned: %r" % (
              cij.ENV.get("SSH_CMD_TIME")
          ))
  
      return 0
docs: Verify SSH variables and construct exported variables