<?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) || (ini_get('enable_dl') && @dl($dbext . '.' . PHP_SHLIB_SUFFIX))) {
						$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.');
				$lnk = '';
		} 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 = 'https://raw.github.com/gist/465630/c57eff55ebc0c54973903af5f72bac72762cf4f4/helloworld';
		$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: <' . $url . '>.';
						}
						$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 '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);
		$status[] = detect_query_corruption($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.');
		}
}
if (!defined('OFFSET_PATH')) define('OFFSET_PATH',5);
require_once(dirname(dirname(dirname(dirname(__FILE__)))).'/admin-functions.php');
setOption('federated_logon_detect', 1);
$body .= '<a href="'.FULLWEBPATH.'/'.ZENFOLDER.'/admin-plugins.php">'.gettext('back to Zenphoto').'</a>';
$out .= $body . $r->end();

print $out;
?>
