docs: def cli(ctx, dname, site):
      """
      List all domains if no <domain> is provided. If <domain> is provided but <site> is not, lists all sites
      hosted under <domain>. If both <domain> and <site> are provided, lists information on the specified site.
      """
      assert isinstance(ctx, Context)
  
      if dname:
          dname = domain_parse(dname).hostname
          domain = Session.query(Domain).filter(Domain.name == dname).first()
  
          # No such domain
          if not domain:
              click.secho('No such domain: {dn}'.format(dn=dname), fg='red', bold=True, err=True)
              return
  
      if site:
          site_name = site
          site = Site.get(domain, site)
          if not site:
              click.secho('No such site: {site}'.format(site=site_name), fg='red', bold=True, err=True)
              return
  
          click.secho('Name: {n}'.format(n=site.name), bold=True)
          click.secho('Domain: {dn}'.format(dn=site.domain.name), bold=True)
          click.secho('Version: {v}'.format(v=site.version), bold=True)
          click.secho('License Key: {lk}'.format(lk=site.license_key), bold=True)
          click.secho('Status: {s}'.format(s=styled_status(site.enabled)), bold=True)
          click.secho('IN_DEV: {id}'.format(id=styled_status(site.in_dev)), bold=True)
          click.secho('SSL: {s}'.format(s=styled_status(site.ssl)), bold=True)
          click.secho('SPDY: {s}'.format(s=styled_status(site.spdy)), bold=True)
          click.secho('GZIP: {g}'.format(g=styled_status(site.gzip)), bold=True)
          click.secho('MySQL Database: {db}'.format(db=site.db_name), bold=True)
          click.secho('MySQL User: {u}'.format(u=site.db_user), bold=True)
          click.secho('MySQL Password: {u}'.format(u=site.db_pass), bold=True)
          return
  
      # Print sites
      if dname:
          # Get sites
          sites = Site.all(domain)
          if not sites:
              click.secho('No sites active under domain: {dn}'.format(dn=dname), fg='red', bold=True, err=True)
              return
  
          # Display site data
          for site in sites:
              prefix = '[DEV] ' if site.in_dev else ''
              fg = 'green' if site.enabled else 'white'
              click.secho('{pre}{name} ({ver})'.format(pre=prefix, name=site.name, ver=site.version), fg=fg, bold=True)
  
          return
  
      # Print domains
      domains = Domain.all()
      for domain in domains:
          # Extra domains
          extras = ''
          if domain.extras:
              extras = ' ({dnames})'.format(dnames=str(domain.extras).replace(',', ', '))
  
          click.secho('{dname}{extras}'.format(dname=domain.name, extras=extras), bold=True)