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detect.php
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detect.php
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<?php
$path_extra = dirname(dirname(__FILE__));
$path = ini_get('include_path');
$path = $path_extra . PATH_SEPARATOR . $path;
ini_set('include_path', $path);
define('IS_WINDOWS', strtoupper(substr(PHP_OS, 0, 3)) === 'WIN');
class PlainText {
function start($title)
{
return '';
}
function tt($text)
{
return $text;
}
function link($href, $text=null)
{
if ($text) {
return $text . ' <' . $href . '>';
} else {
return $href;
}
}
function b($text)
{
return '*' . $text . '*';
}
function contentType()
{
return 'text/plain';
}
function p($text)
{
return wordwrap($text) . "\n\n";
}
function pre($text)
{
$out = '';
$lines = array_map('trim', explode("\n", $text));
foreach ($lines as $line) {
$out .= ' ' . $line . "\n";
}
$out .= "\n";
return $out;
}
function ol($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 $this->h($text, 2);
}
function h1($text)
{
return $this->h($text, 1);
}
function h($text, $n)
{
$chars = '#=+-.';
$c = $chars[$n - 1];
return "\n" . $text . "\n" . str_repeat($c, strlen($text)) . "\n\n";
}
function end()
{
return '';
}
}
class HTML {
function start($title)
{
return '<html><head><title>' . $title . '</title>' .
$this->stylesheet().
'</head><body>' . "\n";
}
function stylesheet()
{
return "<style type='text/css'>\n".
"p {\n".
" width: 50em;\n".
"}\n".
'</style>';
}
function tt($text)
{
return '<code>' . $text . '</code>';
}
function contentType()
{
return 'text/html';
}
function b($text)
{
return '<strong>' . $text . '</strong>';
}
function p($text)
{
return '<p>' . wordwrap($text) . "</p>\n";
}
function pre($text)
{
return '<pre>' . $text . "</pre>\n";
}
function ol($items)
{
$out = '<ol>';
foreach ($items as $item) {
$out .= '<li>' . wordwrap($item) . "</li>\n";
}
$out .= "</ol>\n";
return $out;
}
function h($text, $n)
{
return "<h$n>$text</h$n>\n";
}
function h2($text)
{
return $this->h($text, 2);
}
function h1($text)
{
return $this->h($text, 1);
}
function link($href, $text=null)
{
return '<a href="' . $href . '">' . ($text ? $text : $href) . '</a>';
}
function end()
{
return "</body>\n</html>\n";
}
}
if (isset($_SERVER['REQUEST_METHOD'])) {
$r = new HTML();
} else {
$r = new PlainText();
}
function detect_math($r, &$out)
{
$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 ' . $bc_lnk . ' PHP extension',
'If your site is low-security, call ' .
'Auth_OpenID_setNoMathSupport(), defined in Auth/OpenID/BigMath.php. ',
'The library will function, but ' .
'the security of your OpenID server will depend on the ' .
'security of the network links involved. If you are only ' .
'using consumer support, you should still be able to operate ' .
'securely when the users are communicating with a ' .
'well-implemented server.'));
return false;
} else {
switch ($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 .= $r->p('But it seems to be able to add one and one.');
}
}
return true; // Math library is OK
}
}
function detect_random($r, &$out)
{
$out .= $r->h2('Cryptographic-quality randomness source');
if (Auth_OpenID_RAND_SOURCE === null) {
$out .= $r->p('Using (insecure) pseudorandom number source, because ' .
'Auth_OpenID_RAND_SOURCE has been defined as null.');
return false;
}
$msg = 'The library will try to access ' . Auth_OpenID_RAND_SOURCE
. ' as a source of random data. ';
$numbytes = 6;
$f = @fopen(Auth_OpenID_RAND_SOURCE, 'r');
if ($f !== false) {
$data = fread($f, $numbytes);
$stat = fstat($f);
$size = $stat['size'];
fclose($f);
} else {
$data = null;
$size = true;
}
if ($f !== false) {
$dataok = (Auth_OpenID::bytes($data) == $numbytes);
$ok = $dataok && !$size;
$msg .= 'It seems to exist ';
if ($dataok) {
$msg .= 'and be readable. Here is some hex data: ' .
bin2hex($data) . '.';
} else {
$msg .= 'but reading data failed.';
}
if ($size) {
$msg .= ' This is a ' . $size . ' byte file. Unless you know ' .
'what you are doing, it is likely that you are making a ' .
'mistake by using a regular file as a randomness source.';
}
} else {
$msg .= Auth_OpenID_RAND_SOURCE .
' could not be opened. This could be because of restrictions on' .
' your PHP environment or that randomness source may not exist' .
' on this platform.';
if (IS_WINDOWS) {
$msg .= ' You seem to be running Windows. This library does not' .
' have access to a good source of randomness on Windows.';
}
$ok = false;
}
$out .= $r->p($msg);
if (!$ok) {
$out .= $r->p(
'To set a source of randomness, define Auth_OpenID_RAND_SOURCE ' .
'to the path to the randomness source. If your platform does ' .
'not provide a secure randomness source, the library can' .
'operate in pseudorandom mode, but it is then vulnerable to ' .
'theoretical attacks. If you wish to operate in pseudorandom ' .
'mode, define Auth_OpenID_RAND_SOURCE to null.');
$out .= $r->p('You are running on:');
$out .= $r->pre(php_uname());
$out .= $r->p('There does not seem to be an available source ' .
'of randomness. On a Unix-like platform ' .
'(including MacOS X), try /dev/random and ' .
'/dev/urandom.');
}
return $ok;
}
function detect_stores($r, &$out)
{
$out .= $r->h2('Data storage');
$found = array();
foreach (array('sqlite', 'mysql', 'pgsql') as $dbext) {
if (extension_loaded($dbext)) {
$found[] = $dbext;
}
}
if (count($found) == 0) {
$text = 'No SQL database support was found in this PHP ' .
'installation. See the PHP manual if you need to ' .
'use an SQL database.';
} else {
$text = 'Support was found for ';
if (count($found) == 1) {
$text .= $found[0] . '.';
} else {
$last = array_pop($found);
$text .= implode(', ', $found) . ' and ' . $last . '.';
}
$text = $r->b($text);
}
$text .= ' The library supports the MySQL, PostgreSQL, and SQLite ' .
'database engines, as well as filesystem-based storage. In ' .
'addition, PEAR DB is required to use databases.';
$out .= $r->p($text);
if (function_exists('posix_getpwuid') &&
function_exists('posix_geteuid')) {
$processUser = posix_getpwuid(posix_geteuid());
$web_user = $r->b($r->tt($processUser['name']));
} else {
$web_user = 'the PHP process';
}
if (in_array('sqlite', $found)) {
$out .= $r->p('If you are using SQLite, your database must be ' .
'writable by ' . $web_user . ' and not available over' .
' the web.');
}
$basedir_str = ini_get('open_basedir');
if (gettype($basedir_str) == 'string') {
$url = 'http://www.php.net/manual/en/features.safe-mode.php' .
'#ini.open-basedir';
$lnk = $r->link($url, 'open_basedir');
$out .= $r->p('If you are using a filesystem-based store or SQLite, ' .
'be aware that ' . $lnk . ' is in effect. This means ' .
'that your data will have to be stored in one of the ' .
'following locations:');
$out .= $r->pre(var_export($basedir_str, true));
} else {
$out .= $r->p('The ' . $r->b($r->tt('open_basedir')) . ' configuration restriction ' .
'is not in effect.');
}
$out .= $r->p('If you are using the filesystem store, your ' .
'data directory must be readable and writable by ' .
$web_user . ' and not availabe over the Web.');
return true;
}
function detect_xml($r, &$out)
{
global $__Auth_Yadis_xml_extensions;
$out .= $r->h2('XML Support');
// Try to get an XML extension.
$ext = Auth_Yadis_getXMLParser();
if ($ext !== null) {
$out .= $r->p('XML parsing support is present using the '.
$r->b(get_class($ext)).' interface.');
return true;
} else {
$out .= $r->p('XML parsing support is absent; please install one '.
'of the following PHP extensions:');
foreach ($__Auth_Yadis_xml_extensions as $name => $cls) {
$out .= "<li>" . $r->b($name) . "</li>";
}
return false;
}
}
function detect_query_corruption($r, &$out)
{
$out .= $r->h2('Query Corruption');
if ($_SERVER["QUERY_STRING"]!="test_query=a%26b")
{
$out.=$r->p("Your web server seems to corrupt queries. Received ".$_SERVER["QUERY_STRING"].", expected a=%26b. Check for mod_encoding.");
return false;
}
else
{
$out.=$r->p("Your web server does not corrupt queries. Good.");
return true;
}
}
function detect_fetcher($r, &$out)
{
$out .= $r->h2('HTTP Fetching');
$result = @include 'Auth/Yadis/Yadis.php';
if (!$result) {
$out .= $r->p('Yadis code unavailable; could not test fetcher support.');
return false;
}
if (Auth_Yadis_Yadis::curlPresent()) {
$out .= $r->p('This PHP installation has support for libcurl. Good.');
} else {
$out .= $r->p('This PHP installation does not have support for ' .
'libcurl. CURL is not required but is recommended. '.
'The OpenID library will use an fsockopen()-based fetcher.');
$lnk = $r->link('http://us3.php.net/manual/en/ref.curl.php');
$out .= $r->p('See ' . $lnk . ' about enabling the libcurl support ' .
'for PHP.');
}
$ok = true;
$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$fetch_url = 'http://gist.github.com/raw/465630/c57eff55ebc0c54973903af5f72bac72762cf4f4/helloworld';
$expected_url = $fetch_url;// . '.txt';
$result = $fetcher->get($fetch_url);
if (isset($result)) {
$parts = array('An HTTP request was completed.');
// list ($code, $url, $data) = $result;
if ($result->status != '200' && $result->status != '206') {
$ok = false;
$parts[] = $r->b(
sprintf(
'Got %s instead of the expected HTTP status ' .
'code (200 or 206).', $result->status));
}
$url = $result->final_url;
if (!$url == $expected_url) {
$ok = false;
if ($url == $fetch_url) {
$msg = 'The redirected URL was not returned.';
} else {
$msg = 'An unexpected URL was returned: <a href="' . $url . '">'. $url . '</a>. tried to fetch <a href="' . $fetch_url . '">' . $fetch_url . '</a>';
}
$parts[] = $r->b($msg);
}
$data = $result->body;
if ($data != 'Hello World!') {
$ok = false;
$parts[] = $r->b('Unexpected data was returned.');
}
$out .= $r->p(implode(' ', $parts));
} else {
$ok = false;
$out .= $r->p('Fetching URL ' . $lnk . ' failed!');
}
if ($fetcher->supportsSSL()) {
$out .= $r->p('Your PHP installation appears to support SSL, so it ' .
'will be able to process HTTPS identity URLs and server URLs.');
} else {
$out .= $r->p('Your PHP installation does not support SSL, so it ' .
'will NOT be able to process HTTPS identity URLs and server URLs.');
}
return $ok;
}
header('Content-Type: ' . $r->contentType() . '; charset=us-ascii');
if (empty($_GET["test_query"]))
{
header("Location: ".$_SERVER['PHP_SELF']."?test_query=a%26b");
}
$title = 'OpenID Library Support Report';
$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.');
$body = '';
$_include = include 'Auth/OpenID.php';
if (!$_include) {
$path = ini_get('include_path');
$body .= $r->p(
'Cannot find the OpenID library. It must be in your PHP include ' .
'path. Your PHP include path is currently:');
$body .= $r->pre($path);
} else {
$status = array();
$status[] = detect_math($r, $body);
$status[] = detect_random($r, $body);
$status[] = detect_stores($r, $body);
$status[] = detect_fetcher($r, $body);
$status[] = detect_xml($r, $body);
if (isset($_SERVER['REQUEST_METHOD'])) {
$status[] = detect_query_corruption($r, $body);
}
$result = true;
foreach ($status as $v) {
if (!$v) {
$result = false;
break;
}
}
if ($result) {
$out .= $r->h2('Setup Complete!');
$out .= $r->p('Your system should be ready to run the OpenID library.');
} else {
$out .= $r->h2('Setup Incomplete');
$out .= $r->p('Your system needs a few changes before it will be ready to run the OpenID library.');
}
}
$out .= $body . $r->end();
print $out;
?>