/etc/web2ldap/templates/searchform_users.html is in web2ldap 1.1.43~dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39  | <fieldset>
  <legend>Search for user accounts</legend>
  Match
  <select title="Search mode" name="search_mode" size="1">
    <option value="(&%s)">all</option>
    <option value="(|%s)">any</option>
  </select>
  of the following.<br>
  <table summary="Search parameters for user accounts">
    <tr>
      <td>
        <input type=hidden name="search_option" value="(%s=%s)">
        <input type=hidden name="search_attr" value="uid">
        UID is<br>
        <input name="search_string" maxlength="60" size="30" value=""><br>
      </td>
      <td>
        <input type=hidden name="search_option" value="(%s=%s*)">
        <input type=hidden name="search_attr" value="mail">
        E-mail address begins with<br>
        <input name="search_string" maxlength="60" size="30" value=""><br>
      </td>
    </tr>
    <tr>
      <td>
        <input type=hidden name="search_option" value="(%s=%s)">
        <input type=hidden name="search_attr" value="uidNumber">
        Numerical UID is<br>
        <input name="search_string" maxlength="60" size="30" value=""><br>
      </td>
      <td>
        <input type=hidden name="search_option" value="(%s=%s)">
        <input type=hidden name="search_attr" value="cn">
        Numerical GID is<br>
        <input name="search_string" maxlength="60" size="30" value=""><br>
      </td>
    </tr>
  </table>
</fieldset>
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