phpldapadmin/lib/common.php

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<?php
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// $Header: /cvsroot/phpldapadmin/phpldapadmin/lib/common.php,v 1.80 2007/12/15 07:50:32 wurley Exp $
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/**
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* Contains code to be executed at the top of each phpLDAPadmin page.
* include this file at the top of every PHP file.
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*
* This file will "pre-initialise" a PLA environment so that any PHP file will have a consistent
* environment with other PLA PHP files.
*
* This code WILL NOT check that all required functions are usable/readable, etc. This process has
* been moved to index.php (which really is only called once when a browser hits PLA for the first time).
*
* The list of ADDITIONAL function files is now defined in functions.php.
*
* @package phpLDAPadmin
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*/
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# Catch any scripts that are called directly.
foreach (array('cmd.php','index.php','view_jpeg_photo.php','entry_chooser.php','password_checker.php', 'download_binary_attr.php') as $script) {
$scriptOK = false;
if (preg_match('/'.$script.'$/',$_SERVER['SCRIPT_NAME'])) {
$scriptOK = true;
break;
}
}
if (! $scriptOK) {
if ($_REQUEST['server_id'])
header(sprintf('Location: index.php?server_id=%s',$_REQUEST['server_id']));
else
header('Location: index.php');
die();
}
/**
* Timer stopwatch, used to instrument PLA
*/
if (! function_exists('stopwatch')) {
function stopwatch() {
static $mt_previous = 0;
list($usec,$sec) = explode(' ',microtime());
$mt_current = (float)$usec + (float)$sec;
if (! $mt_previous) {
$mt_previous = $mt_current;
return 0;
} else {
$mt_diff = ($mt_current - $mt_previous);
$mt_previous = $mt_current;
return sprintf('%.5f',$mt_diff);
}
}
# For compatability - if common has been sourced, then return to the calling script.
} else {
return;
}
if (function_exists('date_default_timezone_set'))
date_default_timezone_set('UTC');
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$timer = stopwatch();
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if (! defined('LIBDIR'))
define('LIBDIR','../lib/');
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# For PHP5 backward/forward compatibility
if (! defined('E_STRICT'))
define('E_STRICT',2048);
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# General functions needed to proceed.
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ob_start();
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require_once realpath(LIBDIR.'functions.php');
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if (ob_get_level()) ob_end_clean();
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/* Turn on all notices and warnings. This helps us write cleaner code (we hope at least)
* Our custom error handler receives all error notices that pass the error_reporting()
* level set above.
*/
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set_error_handler('pla_error_handler');
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# Disable error reporting until all our required functions are loaded.
error_reporting(0);
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/*
* functions.php should have defined our pla_function_files array, listing all our
* required functions (order IS important).
* index.php should have checked they exist and are usable - we'll assume that the user
* has been via index.php, and fixed any problems already.
*/
ob_start();
foreach ($pla_function_files as $file_name) {
require_once realpath ($file_name);
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}
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# Now read in config_default.php
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require_once realpath(LIBDIR.'config_default.php');
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if (ob_get_level()) ob_end_clean();
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# We are now ready for error reporting.
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error_reporting(E_ALL);
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pla_session_start();
# Check we have the correct version of the SESSION cache
if (isset($_SESSION['cache'])) {
if (!is_array($_SESSION[pla_session_id_init])) $_SESSION[pla_session_id_init] = array();
if (!isset($_SESSION[pla_session_id_init]['version']) || !isset($_SESSION[pla_session_id_init]['config'])
|| $_SESSION[pla_session_id_init]['version'] !== pla_version()
|| $_SESSION[pla_session_id_init]['config'] != filemtime(CONFDIR.'config.php')) {
$_SESSION[pla_session_id_init]['version'] = pla_version();
$_SESSION[pla_session_id_init]['config'] = filemtime(CONFDIR.'config.php');
unset($_SESSION['cache']);
unset($_SESSION['plaConfig']);
# Our configuration information has changed, so we'll redirect to index.php to get it reloaded again.
system_message(array(
'title'=>_('Configuration cache stale.'),
'body'=>_('Your configuration has been automatically refreshed.'),
'type'=>'info'));
$config_file = CONFDIR.'config.php';
check_config($config_file);
} else {
# Sanity check, specially when upgrading from a previous release.
foreach (array_keys($_SESSION['cache']) as $id)
if (isset($_SESSION['cache'][$id]['tree']['null']) && ! is_object($_SESSION['cache'][$id]['tree']['null']))
unset($_SESSION['cache'][$id]);
}
}
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# If we came via index.php, then set our $config.
if (! isset($_SESSION['plaConfig']) && isset($config))
$_SESSION['plaConfig'] = $config;
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# If we get here, and plaConfig is not set, then redirect the user to the index.
if (! isset($_SESSION['plaConfig'])) {
header('Location: index.php');
die();
} else {
# Check our custom variables.
# @todo: Change this so that we dont process a cached session.
$_SESSION['plaConfig']->CheckCustom();
}
# If we are here, $_SESSION is set - so enabled DEBUGing if it has been configured.
if (($_SESSION['plaConfig']->GetValue('debug','syslog') || $_SESSION['plaConfig']->GetValue('debug','file'))
&& $_SESSION['plaConfig']->GetValue('debug','level'))
define('DEBUG_ENABLED',1);
else
define('DEBUG_ENABLED',0);
# Since DEBUG_ENABLED is set later, as $config may not be set, we'll
if (DEBUG_ENABLED)
debug_log('PLA (%s) initialised and starting with (%s).',1,pla_version(),$_REQUEST);
# Set our PHP timelimit.
if ($_SESSION['plaConfig']->GetValue('session','timelimit'))
set_time_limit($_SESSION['plaConfig']->GetValue('session','timelimit'));
# If debug mode is set, increase the time_limit, since we probably need it.
if (DEBUG_ENABLED && $_SESSION['plaConfig']->GetValue('session','timelimit'))
set_time_limit($_SESSION['plaConfig']->GetValue('session','timelimit') * 5);
# @todo: Change this so that we dont process a cached session.
$_SESSION['plaConfig']->friendly_attrs = process_friendly_attr_table();
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/*
* Language configuration. Auto or specified?
* Shall we attempt to auto-determine the language?
*/
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$language = $_SESSION['plaConfig']->GetValue('appearance','language');
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if ($language == 'auto') {
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# Make sure their browser correctly reports language. If not, skip this.
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if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
# Get the languages which are spetcified in the HTTP header
$HTTP_LANGS = preg_split ('/[;,]+/',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
foreach ($HTTP_LANGS as $key => $value) {
if (substr($value,0,2) == 'q=') {
unset($HTTP_LANGS[$key]);
continue;
}
$value = preg_split('/[-]+/',$value);
if (sizeof($value) == 2)
$HTTP_LANGS[$key] = strtolower($value[0]).'_'.strtoupper($value[1]);
else
$HTTP_LANGS[$key] = auto_lang(strtolower($value[0]));
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}
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$HTTP_LANGS = array_unique($HTTP_LANGS);
foreach ($HTTP_LANGS as $HTTP_LANG) {
# Try to grab one after the other the language file
$language_file = LANGDIR.$HTTP_LANG;
if ((substr($HTTP_LANG,0,2) == 'en') ||
(file_exists($language_file) && is_readable($language_file))) {
# Set language
putenv('LANG='.$HTTP_LANG); # e.g. LANG=de_DE
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$HTTP_LANG .= '.UTF-8';
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setlocale(LC_ALL,$HTTP_LANG); # set LC_ALL to de_DE
bindtextdomain('messages',LANGDIR);
bind_textdomain_codeset('messages','UTF-8');
textdomain('messages');
header('Content-type: text/html; charset=UTF-8',true);
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break;
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}
}
}
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} else {
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# Grab the language file configured in config.php
if ($language != null) {
if (strcmp($language,'english') == 0)
$language = 'en_GB';
$language_file = LANGDIR.$language;
# Set language
putenv('LANG='.$language); # e.g. LANG=de_DE
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$language .= '.UTF-8';
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setlocale(LC_ALL,$language); # set LC_ALL to de_DE
bindtextdomain('messages',LANGDIR);
bind_textdomain_codeset('messages','UTF-8');
textdomain('messages');
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header('Content-type: text/html; charset=UTF-8',true);
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}
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}
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/*
* Strip slashes from GET, POST, and COOKIE variables if this
* PHP install is configured to automatically addslashes()
*/
if (get_magic_quotes_gpc() && (! isset($slashes_stripped) || ! $slashes_stripped)) {
array_stripslashes($_REQUEST);
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array_stripslashes($_GET);
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array_stripslashes($_POST);
array_stripslashes($_COOKIE);
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$slashes_stripped = true;
}
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if (isset($_REQUEST['server_id'])) {
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$ldapserver = $_SESSION['plaConfig']->ldapservers->Instance($_REQUEST['server_id']);
} else {
$ldapserver = $_SESSION['plaConfig']->ldapservers->Instance(null);
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}
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# Test to see if we should log out the user due to the timeout.
if ($ldapserver->haveAuthInfo() && $ldapserver->auth_type != 'config') {
/* If time out value has been reached:
- log out user
- put $server_id in array of recently timed out servers */
if (session_timed_out($ldapserver)) {
$timeout_url = 'cmd.php?cmd=timeout&server_id='.$ldapserver->server_id;
echo '<script type="text/javascript" language="javascript">location.href=\''.$timeout_url.'\'</script>';
die();
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}
}
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/*
* Update $_SESSION['activity']
* for timeout and automatic logout feature
*/
if ($ldapserver->haveAuthInfo())
set_lastactivity($ldapserver);
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/**
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* At this point we have read all our additional function PHP files and our configuration.
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*/
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run_hook('post_session_init',array());
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?>