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Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/inc/lib/diagnoser.lib.php

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<?php
/* For licensing terms, see /license.txt */
/**
*
* * Class that is responsible for generating diagnostic information about the system
*
*
* @package chamilo.diagnoser
* @author Ivan Tcholakov, 2008, initiall proposal and sample code.
* @author spou595, 2009, implementation for Chamilo 2.x
* @author Julio Montoya <gugli100@gmail.com>, 2010, port to chamilo 1.8.7, Some fixes
*
*/
/**
* Diagnoser class
* @package chamilo.diagnoser
*/
class Diagnoser
{
/**
* The status's
*/
const STATUS_OK = 1;
const STATUS_WARNING = 2;
const STATUS_ERROR = 3;
const STATUS_INFORMATION = 4;
function __construct() {
}
function show_html() {
$sections = array('chamilo', 'php', 'mysql', 'webserver');
if (!in_array($_GET['section'], $sections)) {
$current_section = 'chamilo';
} else {
$current_section = $_GET['section'];
}
$html = '<br /><div class="tabbed-pane"><ul class="tabbed-pane-tabs">';
foreach ($sections as $section) {
$html .= '<li><a';
if ($current_section == $section) {
$html .= ' class="current"';
}
//$params = $this->manager->get_parameters();
$params['section'] = $section;
$html .=' href="system_status.php?section='.$section.'">'.get_lang($section).'</a></li>';
//$html[] = ' href="' . $this->manager->get_url($params, true) . '">' . htmlentities(Translation :: get(ucfirst($section) . 'Title')) . '</a></li>';
}
$html .= '</ul><div class="tabbed-pane-content">';
$data = call_user_func(array($this, 'get_' . $current_section . '_data'));
echo $html;
$table = new SortableTableFromArray($data, 1, 100);
$table->set_header(0,'', false);
$table->set_header(1,get_lang('Section'), false);
$table->set_header(2,get_lang('Setting'), false);
$table->set_header(3,get_lang('Current'), false);
$table->set_header(4,get_lang('Expected'), false);
$table->set_header(5,get_lang('Comment'), false);
$table->display();
echo '</div></div>';
}
/**
* Functions to get the data for the chamilo diagnostics
* @return array of data
*/
function get_chamilo_data() {
$array = array();
$writable_folders = array('archive', 'courses', 'home', 'main/upload/users/', 'main/default_course_document/images/');
foreach ($writable_folders as $index => $folder) {
//echo api_get_path(SYS_PATH) . $folder;
$writable = is_writable(api_get_path(SYS_PATH) . $folder);
$status = $writable ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[FILES]', get_lang('IsWritable') . ': ' . $folder, 'http://be2.php.net/manual/en/function.is-writable.php', $writable, 1, 'yes_no', get_lang('DirectoryMustBeWritable'));
}
$exists = file_exists(api_get_path(SYS_CODE_PATH).'install');
$status = $exists ? self :: STATUS_WARNING : self :: STATUS_OK;
$array[] = $this->build_setting($status, '[FILES]', get_lang('DirectoryExists') . ': /install', 'http://be2.php.net/file_exists', $exists, 0, 'yes_no', get_lang('DirectoryShouldBeRemoved'));
return $array;
}
/**
* Functions to get the data for the php diagnostics
* @return array of data
*/
function get_php_data() {
$array = array();
// General Functions
$version = phpversion();
$status = $version > '5.0' ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[PHP]', 'phpversion()', 'http://www.php.net/manual/en/function.phpversion.php', phpversion(), '>= 5.0', null, get_lang('PHPVersionInfo'));
$setting = ini_get('output_buffering');
$req_setting = 1;
$status = $setting >= $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'output_buffering', 'http://www.php.net/manual/en/outcontrol.configuration.php#ini.output-buffering', $setting, $req_setting, 'on_off', get_lang('OutputBufferingInfo'));
$setting = ini_get('file_uploads');
$req_setting = 1;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'file_uploads', 'http://www.php.net/manual/en/ini.core.php#ini.file-uploads', $setting, $req_setting, 'on_off', get_lang('FileUploadsInfo'));
$setting = ini_get('magic_quotes_runtime');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'magic_quotes_runtime', 'http://www.php.net/manual/en/ini.core.php#ini.magic-quotes-runtime', $setting, $req_setting, 'on_off', get_lang('MagicQuotesRuntimeInfo'));
$setting = ini_get('safe_mode');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'safe_mode', 'http://www.php.net/manual/en/ini.core.php#ini.safe-mode', $setting, $req_setting, 'on_off', get_lang('SafeModeInfo'));
$setting = ini_get('register_globals');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'register_globals', 'http://www.php.net/manual/en/ini.core.php#ini.register-globals', $setting, $req_setting, 'on_off', get_lang('RegisterGlobalsInfo'));
$setting = ini_get('short_open_tag');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'short_open_tag', 'http://www.php.net/manual/en/ini.core.php#ini.short-open-tag', $setting, $req_setting, 'on_off', get_lang('ShortOpenTagInfo'));
$setting = ini_get('magic_quotes_gpc');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'magic_quotes_gpc', 'http://www.php.net/manual/en/ini.core.php#ini.magic_quotes_gpc', $setting, $req_setting, 'on_off', get_lang('MagicQuotesGpcInfo'));
$setting = ini_get('display_errors');
$req_setting = 0;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'display_errors', 'http://www.php.net/manual/en/ini.core.php#ini.display_errors', $setting, $req_setting, 'on_off', get_lang('DisplayErrorsInfo'));
$setting = ini_get('upload_max_filesize');
$req_setting = '10M - 100M - ...';
if ($setting < 10)
$status = self :: STATUS_ERROR;
if ($setting >= 10 && $setting < 100)
$status = self :: STATUS_WARNING;
if ($setting >= 100)
$status = self :: STATUS_OK;
$array[] = $this->build_setting($status, '[INI]', 'upload_max_filesize', 'http://www.php.net/manual/en/ini.core.php#ini.upload_max_filesize', $setting, $req_setting, null, get_lang('UploadMaxFilesizeInfo'));
$setting = ini_get('default_charset');
if ($setting == '')
$setting = null;
$req_setting = null;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'default_charset', 'http://www.php.net/manual/en/ini.core.php#ini.default-charset', $setting, $req_setting, null, get_lang('DefaultCharsetInfo'));
$setting = ini_get('max_execution_time');
$req_setting = '300 (' . get_lang('minimum') . ')';
$status = $setting >= 300 ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'max_execution_time', 'http://www.php.net/manual/en/ini.core.php#ini.max-execution-time', $setting, $req_setting, null, get_lang('MaxExecutionTimeInfo'));
$setting = ini_get('max_input_time');
$req_setting = '300 (' . get_lang('minimum') . ')';
$status = $setting >= 300 ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'max_input_time', 'http://www.php.net/manual/en/ini.core.php#ini.max-input-time', $setting, $req_setting, null, get_lang('MaxInputTimeInfo'));
$setting = ini_get('memory_limit');
$req_setting = '10M - 100M - ...';
if ($setting < 10)
$status = self :: STATUS_ERROR;
if ($setting >= 10 && $setting < 100)
$status = self :: STATUS_WARNING;
if ($setting >= 100)
$status = self :: STATUS_OK;
$array[] = $this->build_setting($status, '[INI]', 'memory_limit', 'http://www.php.net/manual/en/ini.core.php#ini.memory-limit', $setting, $req_setting, null, get_lang('MemoryLimitInfo'));
$setting = ini_get('post_max_size');
$req_setting = '10M - 100M - ...';
if ($setting < 10)
$status = self :: STATUS_ERROR;
if ($setting >= 10 && $setting < 100)
$status = self :: STATUS_WARNING;
if ($setting >= 100)
$status = self :: STATUS_OK;
$array[] = $this->build_setting($status, '[INI]', 'post_max_size', 'http://www.php.net/manual/en/ini.core.php#ini.post-max-size', $setting, $req_setting, null, get_lang('PostMaxSizeInfo'));
$setting = ini_get('variables_order');
$req_setting = 'GPCS';
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[INI]', 'variables_order', 'http://www.php.net/manual/en/ini.core.php#ini.variables-order', $setting, $req_setting, null, get_lang('VariablesOrderInfo'));
$setting = ini_get('session.gc_maxlifetime');
$req_setting = '4320';
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[SESSION]', 'session.gc_maxlifetime', 'http://www.php.net/manual/en/ini.core.php#session.gc-maxlifetime', $setting, $req_setting, null, get_lang('SessionGCMaxLifetimeInfo'));
if (api_check_browscap()){$setting = true;}else{$setting=false;}
$req_setting = true;
$status = $setting == $req_setting ? self :: STATUS_OK : self :: STATUS_WARNING;
$array[] = $this->build_setting($status, '[INI]', 'browscap', 'http://www.php.net/manual/en/misc.configuration.php#ini.browscap', $setting, $req_setting, 'on_off', get_lang('BrowscapInfo'));
//Extensions
$extensions = array('gd' => array('link'=>'http://www.php.net/gd', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'mysql' => array('link'=>'http://www.php.net/mysql', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'pcre' => array('link'=>'http://www.php.net/pcre', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'session' => array('link'=>'http://www.php.net/session', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'standard' => array('link'=>'http://www.php.net/spl', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'zlib' => array('link'=>'http://www.php.net/zlib', 'expected' => 1, 'comment' => get_lang('ExtensionMustBeLoaded')),
'xsl' => array('link'=>'http://be2.php.net/xsl', 'expected' => 2, 'comment' => get_lang('ExtensionCouldBeLoaded')),
'curl' => array('link'=>'http://www.php.net/curl', 'expected' => 2, 'comment' => get_lang('ExtensionCouldBeLoaded')),
);
foreach ($extensions as $extension => $data) {
$url = $data['link'];
$expected_value = $data['expected'];
$comment = $data['comment'];
$loaded = extension_loaded($extension);
$status = $loaded ? self :: STATUS_OK : self :: STATUS_ERROR;
$array[] = $this->build_setting($status, '[EXTENSION]', get_lang('LoadedExtension') . ': ' . $extension, $url, $loaded, $expected_value, 'yes_no_optional', $comment);
}
return $array;
}
/**
* Functions to get the data for the mysql diagnostics
* @return array of data
*/
function get_mysql_data() {
$array = array();
// A note: Maybe it would be better if all "MySQL"-like variable names and words on the page to be replaced with "Database"-like ones.
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[MySQL]', 'mysql_get_host_info()', 'http://www.php.net/manual/en/function.mysql-get-host-info.php', Database::get_host_info(), null, null, get_lang('MysqlHostInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[MySQL]', 'mysql_get_server_info()', 'http://www.php.net/manual/en/function.mysql-get-server-info.php', Database::get_server_info(), null, null, get_lang('MysqlServerInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[MySQL]', 'mysql_get_proto_info()', 'http://www.php.net/manual/en/function.mysql-get-proto-info.php', Database::get_proto_info(), null, null, get_lang('MysqlProtoInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[MySQL]', 'mysql_get_client_info()', 'http://www.php.net/manual/en/function.mysql-get-client-info.php', Database::get_client_info(), null, null, get_lang('MysqlClientInfo'));
return $array;
}
/**
* Functions to get the data for the webserver diagnostics
* @return array of data
*/
function get_webserver_data() {
$array = array();
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["SERVER_NAME"]', 'http://be.php.net/reserved.variables.server', $_SERVER["SERVER_NAME"], null, null, get_lang('ServerNameInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["SERVER_ADDR"]', 'http://be.php.net/reserved.variables.server', $_SERVER["SERVER_ADDR"], null, null, get_lang('ServerAddessInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["SERVER_PORT"]', 'http://be.php.net/reserved.variables.server', $_SERVER["SERVER_PORT"], null, null, get_lang('ServerPortInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["SERVER_SOFTWARE"]', 'http://be.php.net/reserved.variables.server', $_SERVER["SERVER_SOFTWARE"], null, null, get_lang('ServerSoftwareInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["REMOTE_ADDR"]', 'http://be.php.net/reserved.variables.server', $_SERVER["REMOTE_ADDR"], null, null, get_lang('ServerRemoteInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["HTTP_USER_AGENT"]', 'http://be.php.net/reserved.variables.server', $_SERVER["HTTP_USER_AGENT"], null, null, get_lang('ServerUserAgentInfo'));
/*$path = $this->manager->get_url(array('section' => Request :: get('section')));
$request = $_SERVER["REQUEST_URI"];
$status = $request != $path ? self :: STATUS_ERROR : self :: STATUS_OK;
$array[] = $this->build_setting($status, '[SERVER]', '$_SERVER["REQUEST_URI"]', 'http://be.php.net/reserved.variables.server', $request, $path, null, get_lang('RequestURIInfo'));
*/
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', '$_SERVER["SERVER_PROTOCOL"]', 'http://be.php.net/reserved.variables.server', $_SERVER["SERVER_PROTOCOL"], null, null, get_lang('ServerProtocolInfo'));
$array[] = $this->build_setting(self :: STATUS_INFORMATION, '[SERVER]', 'php_uname()', 'http://be2.php.net/php_uname', php_uname(), null, null, get_lang('UnameInfo'));
return $array;
}
/**
* Additional functions needed for fast integration
*/
function build_setting($status, $section, $title, $url, $current_value, $expected_value, $formatter, $comment, $img_path = null) {
switch ($status) {
case self :: STATUS_OK :
$img = 'bullet_green.gif';
break;
case self :: STATUS_WARNING :
$img = 'bullet_orange.gif';
break;
case self :: STATUS_ERROR :
$img = 'bullet_red.gif';
break;
case self :: STATUS_INFORMATION :
$img = 'bullet_blue.gif';
break;
}
if (! $img_path) {
$img_path = api_get_path(WEB_IMG_PATH);
}
$image = '<img src="' . $img_path . $img . '" alt="' . $status . '" />';
$url = $this->get_link($title, $url);
$formatted_current_value = $current_value;
$formatted_expected_value = $expected_value;
if ($formatter) {
if (method_exists($this, 'format_' . $formatter)) {
$formatted_current_value = call_user_func(array($this, 'format_' . $formatter), $current_value);
$formatted_expected_value = call_user_func(array($this, 'format_' . $formatter), $expected_value);
}
}
return array($image, $section, $url, $formatted_current_value, $formatted_expected_value, $comment);
}
/**
* Create a link with a url and a title
* @param $title
* @param $url
* @return string the url
*/
function get_link($title, $url) {
return '<a href="' . $url . '" target="about:bank">' . $title . '</a>';
}
function format_yes_no_optional($value) {
$return = '';
switch($value) {
case 0:
$return = get_lang('No');
break;
case 1:
$return = get_lang('Yes');
break;
case 2:
$return = get_lang('Optional');
break;
}
return $return;
}
function format_yes_no($value) {
return $value ? get_lang('Yes') : get_lang('No');
}
function format_on_off($value) {
$value = intval($value);
if ($value > 1) {
// Greater than 1 values are shown "as-is", they may be interpreted as "On" later.
return $value;
}
// These are the values 'On' and 'Off' used in the php-ini file. Translation (get_lang()) is not needed here.
return $value ? 'On' : 'Off';
}
}