';
} else {
return $href;
}
}
function contentType()
{
return 'text/plain';
}
function p($text)
{
return wordwrap($text) . "\n\n";
}
function pre($text)
{
$out = '';
$lines = array_map('trim', explode("\n", $text));
foreach ($lines as $line) {
$out .= ' ' . $line . "\n";
}
}
function ol($items)
{
$out = '';
$c = 1;
foreach ($items as $item) {
$item = wordwrap($item, 72);
$lines = array_map('trim', explode("\n", $item));
$out .= $c . '. ' . $lines[0] . "\n";
unset($lines[0]);
foreach ($lines as $line) {
$out .= ' ' . $line . "\n";
}
$out .= "\n";
$c += 1;
}
return $out;
}
function h2($text)
{
return $text . "\n" . str_repeat('-', strlen($text)) . "\n\n";
}
function h1($text)
{
return $text . "\n" . str_repeat('=', strlen($text)) . "\n\n";
}
function end()
{
return '';
}
}
class HTML {
function start($title)
{
return '' . $title . '' . "\n";
}
function contentType()
{
return 'text/html';
}
function p($text)
{
return '' . wordwrap($text) . "
\n";
}
function pre($text)
{
return '' . $text . "
\n";
}
function ol($items)
{
$out = '';
foreach ($items as $item) {
$out .= '- ' . wordwrap($item) . "
\n";
}
$out .= "
\n";
return $out;
}
function h($text, $n)
{
return "$text\n";
}
function h2($text)
{
return $this->h($text, 2);
}
function h1($text)
{
return $this->h($text, 1);
}
function link($href, $text=null)
{
return '' . ($text ? $text : $href) . '';
}
function end()
{
return "\n\n";
}
}
$r = new HTML();
function detect_math($r, &$out)
{
global $_Auth_OpenID_math_extensions;
$out .= $r->h2('Math support');
$ext = Auth_OpenID_detectMathLibrary($_Auth_OpenID_math_extensions);
if (!isset($ext['extension']) || !isset($ext['class'])) {
$out .= $r->p(
'Your PHP installation does not include big integer math ' .
'support. This support is required if you wish to run a ' .
'secure OpenID server without using SSL.');
$out .= $r->p('To use this library, you have a few options:');
$gmp_lnk = $r->link('http://www.php.net/manual/en/ref.gmp.php', 'GMP');
$bc_lnk = $r->link('http://www.php.net/manual/en/ref.bc.php', 'bcmath');
$out .= $r->ol(array(
'Install the ' . $gmp_lnk . ' PHP extension',
'Install the ' . $bc_lnk . ' PHP extension',
'If your site is low-security, define ' .
'Auth_OpenID_NO_MATH_SUPPORT. The library will function, but ' .
'the security of your OpenID server will depend on the ' .
'security of the network links involved. If you are only ' .
'using consumer support, you should still be able to operate ' .
'securely when the users are communicating with a ' .
'well-implemented server.'));
return false;
} else {
switch ($ext['extension']) {
case 'bcmath':
$out .= $r->p('Your PHP installation has bcmath support. This is ' .
'adequate for small-scale use, but can be CPU-intensive. ' .
'You may want to look into installing the GMP extension.');
$lnk = $r->link('http://www.php.net/manual/en/ref.gmp.php');
$out .= $r->p('See ' . $lnk .' for more information about the GMP ' .
'extension.');
break;
case 'gmp':
$out .= $r->p('Your PHP installation has gmp support. Good.');
break;
default:
$class = $ext['class'];
$lib = new $class();
$one = $lib->init(1);
$two = $lib->add($one, $one);
$t = $lib->toString($two);
$out .= $r->p('Uh-oh. I do not know about the ' . $ext['extension'] .
' extension!');
if ($t != '2') {
$out .= $r->p('It looks like it is broken. 1 + 1 = ' .
var_export($t, false));
return false;
} else {
$out .= $r->p('But it seems to be able to add one and one.');
}
}
}
}
header('Content-Type: ' . $r->contentType() . '; charset=us-ascii');
$status = array();
$title = 'PHP OpenID Library Check';
$out = $r->start($title) .
$r->h1($title) .
$r->p('This script checks your PHP installation to determine if you ' .
'are set up to use the JanRain PHP OpenID library.');
if (!@include('Auth/OpenID/BigMath.php')) {
$path = ini_get('include_path');
$out .= $r->p(
'Cannot find the OpenID library. It must be in your PHP include ' .
'path. Your PHP include path is currently:');
$out .= $r->pre($path);
} else {
$status['math'] = detect_math($r, $out);
}
$out .= $r->end();
print $out;
?>