function print_user_list()
{
    global $is_admin, $is_assistant, $is_nonuser_admin, $login, $NONUSER_AT_TOP, $NONUSER_ENABLED, $single_user;
    if ($single_user == 'N' && $is_admin) {
        $userlist = user_get_users();
        if ($NONUSER_ENABLED == 'Y') {
            $nonusers = get_nonuser_cals();
            $userlist = !empty($NONUSER_AT_TOP) && $NONUSER_AT_TOP == 'Y' ? array_merge($nonusers, $userlist) : array_merge($userlist, $nonusers);
        }
        $num_users = $size = 0;
        $users = '';
        for ($i = 0, $cnt = count($userlist); $i < $cnt; $i++) {
            $l = $userlist[$i]['cal_login'];
            $size++;
            $users .= '
              <option value="' . $l . '"' . ($l == $login && !$is_assistant && !$is_nonuser_admin ? ' selected="selected"' : '') . '>' . $userlist[$i]['cal_fullname'] . '</option>';
        }
        if ($size > 50) {
            $size = 15;
        } elseif ($size > 5) {
            $size = 5;
        }
        echo '
        <tr>
          <td class="aligntop"><label for="caluser">' . translate('Calendar') . ':</label></td>
          <td>
            <select name="calUser" id="caluser" size="' . $size . '">' . $users . '
            </select>
          </td>
        </tr>';
    }
}

function print_user_list()
{
    global $single_user, $is_admin, $nonuser_enabled, $login, $is_nonuser_admin, $is_assistant;
    if ($single_user == "N" && $is_admin) {
        $userlist = get_my_users();
        if ($nonuser_enabled == "Y") {
            $nonusers = get_nonuser_cals();
            $userlist = !empty($nonuser_at_top) && $nonuser_at_top == "Y" ? array_merge($nonusers, $userlist) : array_merge($userlist, $nonusers);
        }
        $num_users = 0;
        $size = 0;
        $users = "";
        for ($i = 0; $i < count($userlist); $i++) {
            $l = $userlist[$i]['cal_login'];
            $size++;
            $users .= "<option value=\"" . $l . "\"";
            if (!empty($id) && $id > 0) {
                if (!empty($participants[$l])) {
                    $users .= " selected=\"selected\"";
                }
            } else {
                if ($l == $login && !$is_assistant && !$is_nonuser_admin) {
                    $users .= " selected=\"selected\"";
                }
            }
            $users .= ">" . $userlist[$i]['cal_fullname'] . "</option>\n";
        }
        if ($size > 50) {
            $size = 15;
        } else {
            if ($size > 5) {
                $size = 5;
            }
        }
        print "<tr><td style=\"vertical-align:top;\">\n";
        print "<label for=\"caluser\">" . translate("Calendar") . "</label></td><td>\n";
        print "<select name=\"calUser\" id=\"caluser\" size=\"{$size}\">{$users}\n";
        print "</select>\n";
        print "</td></tr>\n";
    }
}

 }
 $can_add = $readonly == "N" || $is_admin == "Y";
 if ($public_access == "Y" && $login == "__public__") {
     if ($public_access_can_add != "Y") {
         $can_add = false;
     }
     if ($public_access_others != "Y") {
         $user = "";
     }
     // security precaution
 }
 if ($groups_enabled == "Y" && $user_sees_only_his_groups == "Y" && !$is_admin) {
     $valid_user = false;
     $userlist = get_my_users();
     if ($nonuser_enabled == "Y") {
         $nonusers = get_nonuser_cals();
         $userlist = array_merge($nonusers, $userlist);
     }
     for ($i = 0; $i < count($userlist); $i++) {
         if ($user == $userlist[$i]['cal_login']) {
             $valid_user = true;
         }
     }
     if ($valid_user == false) {
         $user = "";
         // security precaution
     }
 }
 if (!empty($user)) {
     $u_url = "user={$user}&amp;";
     user_load_variables($user, "user_");

    $error = translate("Database error") . ": " . dbi_error();
}
if ($all_users) {
    $viewusers = array();
    $users = get_my_users();
    for ($i = 0; $i < count($users); $i++) {
        $viewusers[] = $users[$i]['cal_login'];
    }
} else {
    // Make sure this user is allowed to see all users in this view
    // If this is a global view, it may include users that this user
    // is not allowed to see.
    if (!empty($user_sees_only_his_groups) && $user_sees_only_his_groups == 'Y') {
        $myusers = get_my_users();
        if (!empty($nonuser_enabled) && $nonuser_enabled == "Y") {
            $myusers = array_merge($myusers, get_nonuser_cals());
        }
        $userlookup = array();
        for ($i = 0; $i < count($myusers); $i++) {
            $userlookup[$myusers[$i]['cal_login']] = 1;
        }
        $newlist = array();
        for ($i = 0; $i < count($viewusers); $i++) {
            if (!empty($userlookup[$viewusers[$i]])) {
                $newlist[] = $viewusers[$i];
            }
        }
        $viewusers = $newlist;
    }
}
if (count($viewusers) == 0) {

         $login_url .= '?return_path=' . $login_return_path;
         $logout_url .= $login_url . '&action=logout';
     }
     // Should we use another application's login/logout pages?
     if (substr($GLOBALS['user_inc'], 0, 9) == 'user-app-') {
         global $app_login_page, $app_logout_page;
         $logout_url = $app_logout_page;
         $login_url = 'login-app.php' . ($login_return_path != '' && $app_login_page['return'] != '' ? '?return_path=' . $login_return_path : '');
     }
     if ($readonly != 'Y') {
         $tret .= '<br /><span class="prefix">' . $currentUserStr . ':</span>&nbsp;' . (strlen($login) && $login != '__public__' ? $fullname . '&nbsp;(<a title="' . $logoutStr . '" href="' . $logout_url . '">' . $logoutStr : $publicStr . '&nbsp;(<a title="' . $loginStr . '" href="' . $login_url . '">' . $loginStr) . "</a>)\n";
     }
 }
 // Manage Calendar links.
 if (!empty($NONUSER_ENABLED) && $NONUSER_ENABLED == 'Y') {
     $admincals = get_nonuser_cals($login);
 }
 // Make sure they have access to either month/week/day view. If they do not,
 // then we cannot create a URL that shows just the boss' events. So, we
 // would not include any of the "manage calendar of" links.
 $have_boss_url = true;
 if (!access_can_access_function(ACCESS_MONTH) && !access_can_access_function(ACCESS_WEEK) && !access_can_access_function(ACCESS_DAY)) {
     $have_boss_url = false;
 }
 if ($have_boss_url && ($has_boss || !empty($admincals[0]) || $is_admin && $PUBLIC_ACCESS)) {
     $grouplist = user_get_boss_list($login);
     if (!empty($admincals[0])) {
         $grouplist = array_merge($admincals, $grouplist);
     }
     if ($is_admin && $PUBLIC_ACCESS == 'Y') {
         $public = array('cal_login' => '__public__', 'cal_fullname' => $publicStr);

</table>
</form>

<?php 
}
if (!empty($PUBLIC_ACCESS) && $PUBLIC_ACCESS == 'Y') {
    ?>
 <br /><br />
 <a class="nav" href="index.php">
   <?php 
    etranslate('Access public calendar');
    ?>
</a><br />
<?php 
}
$nulist = get_nonuser_cals();
for ($i = 0, $cnt = count($nulist); $i < $cnt; $i++) {
    if ($nulist[$i]['cal_is_public'] == 'Y') {
        ?>
<a class="nav" href="nulogin.php?login=<?php 
        echo $nulist[$i]['cal_login'] . '">' . translate('Access') . ' ' . $nulist[$i]['cal_fullname'] . ' ' . translate('calendar');
        ?>
</a><br /><?php 
    }
}
if ($DEMO_MODE == 'Y') {
    // This is used on the sourceforge demo page
    echo 'Demo login: user = "demo", password = "demo"<br />';
}
?>
<br /><br />

function display_unapproved_events($user)
{
    global $public_access, $is_admin, $nonuser_enabled, $login;
    // Don't do this for public access login, admin user must approve public
    // events
    if ($user == "__public__") {
        return;
    }
    $sql = "SELECT COUNT(webcal_entry_user.cal_id) " . "FROM webcal_entry_user, webcal_entry " . "WHERE webcal_entry_user.cal_id = webcal_entry.cal_id " . "AND webcal_entry_user.cal_status = 'W' " . "AND ( webcal_entry.cal_ext_for_id IS NULL " . "OR webcal_entry.cal_ext_for_id = 0 ) " . "AND ( webcal_entry_user.cal_login = '{$user}'";
    if ($public_access == "Y" && $is_admin) {
        $sql .= " OR webcal_entry_user.cal_login = '__public__'";
    }
    if ($nonuser_enabled == 'Y') {
        $admincals = get_nonuser_cals($login);
        for ($i = 0; $i < count($admincals); $i++) {
            $sql .= " OR webcal_entry_user.cal_login = '" . $admincals[$i]['cal_login'] . "'";
        }
    }
    $sql .= " )";
    //print "SQL: $sql<br />\n";
    $res = dbi_query($sql);
    if ($res) {
        if ($row = dbi_fetch_row($res)) {
            if ($row[0] > 0) {
                $str = translate("You have XXX unapproved events");
            }
            $str = str_replace("XXX", $row[0], $str);
            echo "<a class=\"nav\" href=\"list_unapproved.php";
            if ($user != $login) {
                echo "?user={$user}\"";
            }
            echo "\">" . $str . "</a><br />\n";
        }
        dbi_free_result($res);
    }
}

function get_my_nonusers($user = '', $add_public = false, $reason = 'invite')
{
    global $GROUPS_ENABLED, $is_admin, $is_nonuser, $is_nonuser_admin, $login, $my_nonuser_array, $my_user_array, $PUBLIC_ACCESS, $PUBLIC_ACCESS_FULLNAME, $USER_SEES_ONLY_HIS_GROUPS, $USER_SORT_ORDER;
    $this_user = empty($user) ? $login : $user;
    // Return the global variable (cached).
    if (!empty($my_nonuser_array[$this_user . $add_public]) && is_array($my_nonuser_array)) {
        return $my_nonuser_array[$this_user . $add_public];
    }
    $u = get_nonuser_cals();
    if ($GROUPS_ENABLED == 'Y' && $USER_SEES_ONLY_HIS_GROUPS == 'Y' && !$is_admin) {
        // Get current user's groups.
        $rows = dbi_get_cached_rows('SELECT cal_group_id FROM webcal_group_user
      WHERE cal_login = ?', array($this_user));
        $groups = $ret = $u_byname = array();
        if ($rows) {
            for ($i = 0, $cnt = count($rows); $i < $cnt; $i++) {
                $row = $rows[$i];
                $groups[] = $row[0];
            }
        }
        $groupcnt = count($groups);
        // Nonuser (public) can only see themself (unless access control is on).
        if ($is_nonuser && !access_is_enabled()) {
            return array($this_user);
        }
        for ($i = 0, $cnt = count($u); $i < $cnt; $i++) {
            $u_byname[$u[$i]['cal_login']] = $u[$i];
        }
        if ($groupcnt == 0) {
            // Eek. User is in no groups... Return only themselves.
            if (isset($u_byname[$this_user])) {
                $ret[] = $u_byname[$this_user];
            }
            $my_nonuser_array[$this_user . $add_public] = $ret;
            return $ret;
        }
        // Get other members of current users' groups.
        $sql = 'SELECT DISTINCT( wnc.cal_login ), cal_lastname, cal_firstname,
      cal_is_public FROM webcal_group_user wgu, webcal_nonuser_cals wnc WHERE ' . ($add_public ? 'wnc.cal_is_public = \'Y\'  OR ' : '') . ' cal_admin = ? OR ( wgu.cal_login = wnc.cal_login AND cal_group_id ';
        if ($groupcnt == 1) {
            $sql .= '= ? )';
        } else {
            // Build count ( $groups ) placeholders separated with commas.
            $placeholders = '';
            for ($p_i = 0; $p_i < $groupcnt; $p_i++) {
                $placeholders .= $p_i == 0 ? '?' : ', ?';
            }
            $sql .= "IN ( {$placeholders} ) )";
        }
        // Add $this_user to beginning of query params.
        array_unshift($groups, $this_user);
        $rows = dbi_get_cached_rows($sql . ' ORDER BY ' . (empty($USER_SORT_ORDER) ? '' : "{$USER_SORT_ORDER}"), $groups);
        if ($rows) {
            for ($i = 0, $cnt = count($rows); $i < $cnt; $i++) {
                $row = $rows[$i];
                if (isset($u_byname[$row[0]])) {
                    $ret[] = $u_byname[$row[0]];
                }
            }
        }
    } else {
        // Groups not enabled... return all nonusers.
        $ret = $u;
    }
    // We add Public Access if $add_public= true.
    // Admin already sees all users.
    if (!$is_admin && $add_public && $PUBLIC_ACCESS == 'Y') {
        $pa = user_get_users(true);
        array_unshift($ret, $pa[0]);
    }
    // If user access control enabled,
    // remove any nonusers that this user does not have required access.
    if (access_is_enabled()) {
        $newlist = array();
        for ($i = 0, $cnt = count($ret); $i < $cnt; $i++) {
            $can_list = access_user_calendar($reason, $ret[$i]['cal_login'], $this_user);
            if ($can_list == 'Y' || $can_list > 0) {
                $newlist[] = $ret[$i];
            }
        }
        $ret = $newlist;
    }
    $my_nonuser_array[$this_user . $add_public] = $ret;
    return $ret;
}

if (!$is_admin) {
    echo "<h2>" . translate("Error") . "</h2>\n" . translate("You are not authorized") . ".\n";
    echo "</body>\n</html>";
    exit;
}
if (!$NONUSER_PREFIX) {
    echo "<h2>" . translate("Error") . "</h2>\n" . translate("NONUSER_PREFIX not set") . ".\n";
    echo "</body>\n</html>";
    exit;
}
$add = getValue("add");
?>
	<a name="tabnonusers"></a>
	<div id="tabscontent_nonusers">
<?php 
if (empty($error)) {
    echo "<a title=\"" . translate("Add New NonUser Calendar") . "\" href=\"edit_nonusers.php?add=1\" target=\"nonusersiframe\" onclick=\"javascript:show('nonusersiframe');\">" . translate("Add New NonUser Calendar") . "</a><br />\n";
    // Displaying NonUser Calendars
    $userlist = get_nonuser_cals();
    if (!empty($userlist)) {
        echo "<ul>";
        for ($i = 0; $i < count($userlist); $i++) {
            echo "<li><a title=\"" . $userlist[$i]['cal_fullname'] . "\" href=\"edit_nonusers.php?nid=" . $userlist[$i]["cal_login"] . "\" target=\"nonusersiframe\" onclick=\"javascript:show('nonusersiframe');\">" . $userlist[$i]['cal_fullname'] . "</a></li>\n";
        }
        echo "</ul>";
    }
}
echo "<iframe name=\"nonusersiframe\" id=\"nonusersiframe\" style=\"width:90%;border-width:0px; height:250px;\"></iframe>";
?>
</div>

      <img src="images/help.gif" alt="{$helpStr}" class="help"
onclick="window.open( 'help_layers.php','cal_help','dependent,menubar,scrollbars,height=400,width=400,innerHeight=420,outerWidth=420' );" />
    </h2>
    <form action="edit_layer_handler.php" method="post"
      onsubmit="return valid_form( this );" name="prefform">{$hiddenStr}
      <table cellspacing="2" cellpadding="3">
EOT;
if ($single_user == 'N') {
    $otherlist = $userlist = get_my_users('', 'view');
    if ($NONUSER_ENABLED == 'Y') {
        // Restrict NUC list if groups are enabled.
        $nonusers = get_my_nonusers($login, true, 'view');
        $userlist = $NONUSER_AT_TOP == 'Y' ? array_merge($nonusers, $userlist) : array_merge($userlist, $nonusers);
    }
    if ($REMOTES_ENABLED == 'Y') {
        $remotes = get_nonuser_cals($login, true);
        $userlist = $NONUSER_AT_TOP == 'Y' ? array_merge($remotes, $userlist) : array_merge($userlist, $remotes);
    }
    $num_users = $osize = $size = 0;
    $others = $users = '';
    for ($i = 0, $cnt = count($userlist); $i < $cnt; $i++) {
        if ($userlist[$i]['cal_login'] != $layer_user) {
            $size++;
            $users .= '
              <option value="' . $userlist[$i]['cal_login'] . '"' . (!empty($layers[$id]['cal_layeruser']) && $layers[$id]['cal_layeruser'] == $userlist[$i]['cal_login'] ? ' selected="selected"' : '') . '>' . $userlist[$i]['cal_fullname'] . '</option>';
        }
    }
    for ($i = 0, $cnt = count($otherlist); $i < $cnt; $i++) {
        if ($otherlist[$i]['cal_login'] != $layer_user) {
            $osize++;
            $others .= '

$newRemoteStr = translate('Add New Remote Calendar');
$targetStr = 'target="remotesiframe" onclick="showFrame( \'remotesiframe\' );">';
if (!$NONUSER_PREFIX) {
    echo print_error_header() . translate('NONUSER_PREFIX not set') . '
  </body>
</html>';
    exit;
}
$add = getValue('add');
echo '
    <a name="tabnonusers"></a>
    <div id="tabscontent_remotes">';
if (empty($error)) {
    echo '
      <a title="' . $newRemoteStr . '" href="edit_remotes.php?add=1"' . $targetStr . $newRemoteStr . '</a><br />';
    // Displaying Remote Calendars
    $userlist = get_nonuser_cals($login, true);
    if (!empty($userlist)) {
        echo '
      <ul>';
        for ($i = 0, $cnt = count($userlist); $i < $cnt; $i++) {
            echo '
        <li><a title="' . $userlist[$i]['cal_fullname'] . '" href="edit_remotes.php?nid=' . $userlist[$i]['cal_login'] . '"' . $targetStr . $userlist[$i]['cal_fullname'] . '</a></li>';
        }
        echo '
      </ul>';
    }
}
echo '
      <iframe name="remotesiframe" id="remotesiframe" style="width: 90%; ' . 'border: 0; height: 250px;"></iframe>
    </div>';

function get_users_to_approve()
{
    global $is_admin, $login, $NONUSER_ENABLED, $PUBLIC_ACCESS, $user;
    $app_user_hash = $app_users = $my_non_users = array();
    $non_users = get_nonuser_cals();
    foreach ($non_users as $nonuser) {
        if (user_is_nonuser_admin($login, $nonuser['cal_login'])) {
            $my_non_users[]['cal_login'] = $nonuser['cal_login'];
            // echo $nonuser['cal_login'] . "<br />";
        }
    }
    // First, we list ourself.
    $app_users[] = $login;
    $app_user_hash[$login] = 1;
    if (access_is_enabled()) {
        $all = !empty($NONUSER_ENABLED) && $NONUSER_ENABLED == 'Y' ? array_merge(get_my_users(), $my_non_users) : get_my_users();
        for ($j = 0, $cnt = count($all); $j < $cnt; $j++) {
            $x = $all[$j]['cal_login'];
            if (access_user_calendar('approve', $x)) {
                if (empty($app_user_hash[$x])) {
                    $app_users[] = $x;
                    $app_user_hash[$x] = 1;
                }
            }
        }
    } else {
        if ($is_admin && $PUBLIC_ACCESS == 'Y' && (empty($user) || $user != '__public__')) {
            $app_users[] = '__public__';
            $app_users_hash['__public__'] = 1;
        }
        $all = $my_non_users;
        for ($j = 0, $cnt = count($all); $j < $cnt; $j++) {
            $x = $all[$j]['cal_login'];
            if (empty($app_user_hash[$x])) {
                $app_users[] = $x;
                $app_user_hash[$x] = 1;
            }
        }
    }
    return $app_users;
}