<?php
define('page_template',
'<html>
<head>
<meta http-equiv="cache-control" content="no-cache"/>
<meta http-equiv="pragma" content="no-cache"/>
<title>%s</title>
%s
</head>
<body>
%s
<div id="content">
<h1>%s</h1>
%s
</div>
</body>
</html>');
define('logged_in_pat', 'You are logged in as %s (URL: %s)');
/**
* HTTP response line contstants
*/
define('http_bad_request', 'HTTP/1.1 400 Bad Request');
define('http_found', 'HTTP/1.1 302 Found');
define('http_ok', 'HTTP/1.1 200 OK');
define('http_internal_error', 'HTTP/1.1 500 Internal Error');
/**
* HTTP header constants
*/
define('header_connection_close', 'Connection: close');
define('header_content_text', 'Content-Type: text/plain; charset=us-ascii');
define('redirect_message',
'Please wait; you are being redirected to <%s>');
/**
* Return a string containing an anchor tag containing the given URL
*
* The URL does not need to be quoted, but if text is passed in, then
* it does.
*/
function link_render($url, $text=null) {
$esc_url = htmlspecialchars($url, ENT_QUOTES);
$text = ($text === null) ? $esc_url : $text;
return sprintf('<a href="%s">%s</a>', $esc_url, $text);
}
/**
* Return an HTTP redirect response
*/
function redirect_render($redir_url)
{
$headers = array(http_found,
header_content_text,
header_connection_close,
'Location: ' . $redir_url,
);
$body = sprintf(redirect_message, $redir_url);
return array($headers, $body);
}
function navigation_render($msg, $items)
{
$what = link_render(buildURL(), 'PHP OpenID Server');
if ($msg) {
$what .= ' — ' . $msg;
}
if ($items) {
$s = '<p>' . $what . '</p><ul class="bottom">';
foreach ($items as $action => $text) {
$url = buildURL($action);
$s .= sprintf('<li>%s</li>', link_render($url, $text));
}
$s .= '</ul>';
} else {
$s = '<p class="bottom">' . $what . '</p>';
}
return sprintf('<div class="navigation">%s</div>', $s);
}
/**
* Render an HTML page
*/
function page_render($body, $user, $title, $h1=null, $login=false)
{
$h1 = $h1 ? $h1 : $title;
if ($user) {
$msg = sprintf(logged_in_pat, link_render(idURL($user), $user),
link_render(idURL($user)));
$nav = array('logout' => 'Log Out');
$navigation = navigation_render($msg, $nav);
} else {
if (!$login) {
$msg = link_render(buildURL('login'), 'Log In');
$navigation = navigation_render($msg, array());
} else {
$navigation = '';
}
}
$style = getStyle();
$text = sprintf(page_template, $title, $style, $navigation, $h1, $body);
// No special headers here
$headers = array();
return array($headers, $text);
}
?>
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